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<section id="webassembly-migration-guide">
<span id="migration"></span><h1 id="webassembly-migration-guide"><span id="migration"></span>WebAssembly Migration Guide</h1>
<h2 id="p-nacl-deprecation-announcements">(P)NaCl Deprecation Announcements</h2>
<p>Given the momentum of cross-browser WebAssembly support, we plan to focus our
native code efforts on WebAssembly going forward and plan to remove support for
PNaCl in Q4 2019 (except for Chrome Apps). We believe that the vibrant
ecosystem around <a class="reference external" href="http://webassembly.org">WebAssembly</a>
makes it a better fit for new and existing high-performance
web apps and that usage of PNaCl is sufficiently low to warrant deprecation.</p>
<p>As of Chrome 76, PNaCl on the open web has been moved behind an
<a class="reference external" href="https://github.com/GoogleChrome/OriginTrials/blob/gh-pages/developer-guide.md">Origin Trial</a>,
which is a mechanism for web developers to register and get access to a feature that isn’t on by default.
This is usually a new proposed feature but in this case it’s a feature being deprecated.
A developer can register on the <a class="reference external" href="https://developers.chrome.com/origintrials/#/view_trial/3553340105995321345">Origin Trial Console</a>
and receive a token, which can be embedded into a page and will enable the feature without the user needing to use a flag.
(For more details see the linked guide). The trial is scheduled to last through Chrome 78, approximately until December 2019.
This change is not intended to affect NaCl or PNaCl in Chrome Apps or extensions, and the “enable-nacl”
flag in chrome://flags can also be used to enable PNaCl locally for testing
(this flag also retains its current function of enabling non-PNaCl “native” NaCl on any page).</p>
<p>We also recently announced the deprecation Q1 2018 of
<a class="reference external" href="https://blog.chromium.org/2016/08/from-chrome-apps-to-web.html">Chrome Apps</a>
outside of ChromeOS.</p>
<h2 id="toolchain-migration">Toolchain Migration</h2>
<p>For the majority of (P)NaCl uses cases we recommend transitioning
from the NaCl SDK to <a class="reference external" href="http://webassembly.org/getting-started/developers-guide/">Emscripten</a>.
Migration is likely to be reasonably straightforward
if your application is portable to Linux, uses
<a class="reference external" href="https://www.libsdl.org/">SDL</a>, or POSIX APIs.
While direct support for NaCl / Pepper APIs in not available,
we’ve attempted to list Web API equivalents.
For more challenging porting cases, please reach out on
<a class="reference external" href="mailto:native-client-discuss%40googlegroups.com">native-client-discuss<span>@</span>googlegroups<span>.</span>com</a></p>
<h2 id="api-migration">API Migration</h2>
<p>We’ve outlined here the status of Web Platform substitutes for each
of the APIs exposed to (P)NaCl.
Additionally, the table lists the library or option in Emscripten
that offers the closest substitute.</p>
<p>We expect to add shared memory threads support to WebAssembly in 2017,
as threads are crucial to matching (P)NaCl’s most interesting use
cases. Migration items which assume forthcoming threads support
are marked below. If your application’s flow control relies heavily on blocking
APIs, you may also find threads support is required for convenient porting.</p>
<p>While we’ve tried to be accurate in this table,
there are no doubt errors or omissions.
If you encounter one, please reach out to us on
<a class="reference external" href="mailto:native-client-discuss%40googlegroups.com">native-client-discuss<span>@</span>googlegroups<span>.</span>com</a></p>
<h2 id="ppapi">PPAPI</h2>
<table>
</table>
<h3>PPB_Audio</h3>
<table>
<tr bgcolor="#77ccff" style="color:white; font-weight: bold;">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">PPAPI Method </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;">Assumes Threads </td>
<td style="font-size: 11px; padding: 5px;">Emscripten </td>
<td style="font-size: 11px; padding: 5px;">Web API </td>
<td style="font-size: 11px; padding: 5px;">Limitations </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Create </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;">x </td>
<td style="font-size: 11px; padding: 5px;">SDL (partial) </td>
<td bgcolor="#ffeecc" style="font-size: 11px; padding: 5px;">GAP (partial) - AudioWorkletNode ROUGHLY equivalent</td>
<td style="font-size: 11px; padding: 5px;">The AudioWorkletSpec is done, but AudioDeviceClient may be a better fit for this API. The AudioDeviceClient is still being specified by the community. The worklet may not be the rough equivalent for this API. </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetCurrentConfig </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">SDL </td>
<td style="font-size: 11px; padding: 5px;">AudioContext.* (gets back settings passed in) </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">StartPlayback </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">SDL </td>
<td style="font-size: 11px; padding: 5px;">AudioBufferSourceNode.start </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">StopPlayback </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">SDL </td>
<td style="font-size: 11px; padding: 5px;">AudioBufferSourceNode.stop </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
</table>
<h3>PPB_AudioBuffer</h3>
<table>
<tr bgcolor="#77ccff" style="color:white; font-weight: bold;">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">PPAPI Method </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;">Assumes Threads </td>
<td style="font-size: 11px; padding: 5px;">Emscripten </td>
<td style="font-size: 11px; padding: 5px;">Web API </td>
<td style="font-size: 11px; padding: 5px;">Limitations </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetTimestamp </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">SDL </td>
<td style="font-size: 11px; padding: 5px;">AudioBufferSourceNode.start (parameter) </td>
<td style="font-size: 11px; padding: 5px;">Passed in each time instead of attached to the buffer. </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">SetTimestamp </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">SDL </td>
<td style="font-size: 11px; padding: 5px;">AudioBufferSourceNode.start (parameter) </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetSampleRate </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">SDL </td>
<td style="font-size: 11px; padding: 5px;">AudioBuffer.sampleRate </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetSampleSize </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP - WebAudio only uses 32-bit float, PPAPI does 16-bit int.</td>
<td style="font-size: 11px; padding: 5px;">PPAPI theoretically supports multiple sampling sizes. In practice, it only supports 16-bit samples. Unfortunately, developers have requested 16-bit sample sizes to save on memory use. The next version of the Web Audio spec will implement support for 16-bit samples. An optimization for AudioBuffer could be implemented similar to Firefox by using 16-bit buffer for audio that comes from decodeAudioData </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetNumberOfChannels </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">SDL </td>
<td style="font-size: 11px; padding: 5px;">AudioBuffer.numberOfChannels </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetDataBuffer </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">SDL </td>
<td style="font-size: 11px; padding: 5px;">AudioBuffer.getChannelData </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetBufferSize </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">SDL </td>
<td style="font-size: 11px; padding: 5px;">AudioBuffer.length </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
</table>
<h3>PPB_AudioConfig</h3>
<table>
<tr bgcolor="#77ccff" style="color:white; font-weight: bold;">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">PPAPI Method </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;">Assumes Threads </td>
<td style="font-size: 11px; padding: 5px;">Emscripten </td>
<td style="font-size: 11px; padding: 5px;">Web API </td>
<td style="font-size: 11px; padding: 5px;">Limitations </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">CreateStereo16Bit </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP - Only 32-bit float samples supported</td>
<td style="font-size: 11px; padding: 5px;">The next version of the Web Audio spec will implement support for 16-bit samples. </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetSampleRate </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">SDL </td>
<td style="font-size: 11px; padding: 5px;">AudioContext.sampleRate </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetSampleFrameCount </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">SDL </td>
<td style="font-size: 11px; padding: 5px;">AudioBuffer.length </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">RecommendSampleRate </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">SDL </td>
<td style="font-size: 11px; padding: 5px;">AudioContext.sampleRate (from default construct) </td>
<td style="font-size: 11px; padding: 5px;">An AudioContext will have the preferred sampling rate that matchs the actual sample rate of the hardware audio device by default. </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">RecommendSampleFrameCount </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP - Would be handled with the planned AudioDeviceClient</td>
<td style="font-size: 11px; padding: 5px;">There is an open issue to allow a user-specified size, but that is still being defined. This is probably best handled with AudioDeviceClient which can tell you what the appropriate size would be for the given hardware. </td>
</tr>
</table>
<h3>PPB_Console</h3>
<table>
<tr bgcolor="#77ccff" style="color:white; font-weight: bold;">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">PPAPI Method </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;">Assumes Threads </td>
<td style="font-size: 11px; padding: 5px;">Emscripten </td>
<td style="font-size: 11px; padding: 5px;">Web API </td>
<td style="font-size: 11px; padding: 5px;">Limitations </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Log </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">utime </td>
<td style="font-size: 11px; padding: 5px;">console.log/warn/error/... </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">LogWithSource </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td style="font-size: 11px; padding: 5px;">The Console API is regarded as a sufficiently complete replacement, unless there are specific use cases raised by developers for the functionality provided by LogWithSource. DevTools Source Maps can be used to debug transpiled JavaScript in their original source language. </td>
</tr>
</table>
<h3>PPB_Core</h3>
<table>
<tr bgcolor="#77ccff" style="color:white; font-weight: bold;">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">PPAPI Method </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;">Assumes Threads </td>
<td style="font-size: 11px; padding: 5px;">Emscripten </td>
<td style="font-size: 11px; padding: 5px;">Web API </td>
<td style="font-size: 11px; padding: 5px;">Limitations </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">getTime </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">utime </td>
<td style="font-size: 11px; padding: 5px;">new Date().getTime() </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">getTimeTicks </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">utime </td>
<td style="font-size: 11px; padding: 5px;">new Date().getTime() </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">IsMainThread </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td style="font-size: 11px; padding: 5px;">window.document !== undefined </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">CallOnMainThread </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td style="font-size: 11px; padding: 5px;">Worker.postMessage + Atomics.wait </td>
<td style="font-size: 11px; padding: 5px;">Equivalent synchronization can be built. </td>
</tr>
</table>
<h3>PPB_FileIO</h3>
<table>
<tr bgcolor="#77ccff" style="color:white; font-weight: bold;">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">PPAPI Method </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;">Assumes Threads </td>
<td style="font-size: 11px; padding: 5px;">Emscripten </td>
<td style="font-size: 11px; padding: 5px;">Web API </td>
<td style="font-size: 11px; padding: 5px;">Limitations </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Create </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">FS (partial) </td>
<td style="font-size: 11px; padding: 5px;">window.chooseFileSystemEntries() </td>
<td style="font-size: 11px; padding: 5px;">Create and open are used differently, but the pieces are of equal power. </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Open </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">FS (partial) </td>
<td style="font-size: 11px; padding: 5px;">window.chooseFileSystemEntries() </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Query </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">FS (partial) </td>
<td style="font-size: 11px; padding: 5px;">Blob.size, FileSystemHandle.getFile(), FileSystemHandle.getDirectory(), File.lastModified </td>
<td bgcolor="#ffeecc" style="font-size: 11px; padding: 5px;">GAP (partial) - Blob.type can also be used to check the MIME type. The file system type, creation time, and last access time can not be determined with the Native File System API.</td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Touch </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">FS (partial) </td>
<td style="font-size: 11px; padding: 5px;">FileSystemDirectoryHandle.getFile("name", {create: true}) </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Read </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">FS (partial) </td>
<td style="font-size: 11px; padding: 5px;">Blob.slice().arrayBuffer() </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Write </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">FS (partial) </td>
<td style="font-size: 11px; padding: 5px;">FileSystemWriter.write() </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">SetLength </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">FS (partial) </td>
<td style="font-size: 11px; padding: 5px;">FileSystemWriter.truncate() </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Flush </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffeecc" style="font-size: 11px; padding: 5px;">GAP (partial)</td>
<td bgcolor="#ffeecc" style="font-size: 11px; padding: 5px;">GAP (partial) - Files are flushed when FileSystemWrite.close() is called</td>
<td style="font-size: 11px; padding: 5px;">This is intended by design because the Native File System API files are exposed to the OS, therefore a Safe Browsing check needs to be performed before data is shown to the OS. </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Close </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">FS (partial) </td>
<td style="font-size: 11px; padding: 5px;">FileSystemWriter.close() </td>
<td style="font-size: 11px; padding: 5px;">Does not cancel pending operations, but flushes any data written so far to disk. </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">ReadToArray </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td style="font-size: 11px; padding: 5px;">Blob.slice().arrayBuffer() or Blob.arrayBuffer() </td>
<td style="font-size: 11px; padding: 5px;">Allows multiple subrange reads in parallel. </td>
</tr>
</table>
<h3>PPB_FileRef</h3>
<table>
<tr bgcolor="#77ccff" style="color:white; font-weight: bold;">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">PPAPI Method </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;">Assumes Threads </td>
<td style="font-size: 11px; padding: 5px;">Emscripten </td>
<td style="font-size: 11px; padding: 5px;">Web API </td>
<td style="font-size: 11px; padding: 5px;">Limitations </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Create </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">FS (partial) </td>
<td style="font-size: 11px; padding: 5px;">FileSystemDirectoryHandle.getFile("name", {create: true}) </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetFileSystemType </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">FS (partial) </td>
<td style="font-size: 11px; padding: 5px;">FileSystem.type </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetName </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">FS (partial) </td>
<td style="font-size: 11px; padding: 5px;">File.name </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetPath </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">FS (partial) </td>
<td bgcolor="#ffeecc" style="font-size: 11px; padding: 5px;">GAP (partial) - With the Native File System API, the relative path of a file can be determined from reference to a directory that contains the file using FileSystemHandle.resolve(FileSystemHandle)</td>
<td style="font-size: 11px; padding: 5px;">The absolute path of a file cannot be determined, and the user has to grant permission to access the directory containing the file. </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetParent </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">FS (partial) </td>
<td bgcolor="#ffeecc" style="font-size: 11px; padding: 5px;">GAP (partial) - With the Native File System API, the relative path of a file can be determined from reference to a directory that contains the file using FileSystemHandle.resolve(FileSystemHandle)</td>
<td style="font-size: 11px; padding: 5px;">The user has to grant permission to access the directory containing the file. </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">MakeDirectory </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">FS (partial) </td>
<td style="font-size: 11px; padding: 5px;">FileSystemHandle.getDirectory(..., {createIfNotExists: true}) </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Touch </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">FS (partial) </td>
<td style="font-size: 11px; padding: 5px;">FileSystemDirectoryHandle.getFile("name", {create: true}) </td>
<td style="font-size: 11px; padding: 5px;">Modify time can be bumped by writing. </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Delete </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">FS (partial) </td>
<td style="font-size: 11px; padding: 5px;">FileSystemDirectoryHandle.removeEntry() </td>
<td style="font-size: 11px; padding: 5px;">Unlike the PPAPI, directories do not have to be empty. </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Rename </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">FS (partial) </td>
<td bgcolor="#ffeecc" style="font-size: 11px; padding: 5px;">GAP (partial) - With the Native File System API, the file can be written with the new name using a combination of FileSystemFileHandle.getFile() for the new name and FileSystemFileHandle.createWriter().write() with the contents of the old file. Then FileSystemDirectoryHandle.removeEntry() to delete the old file.</td>
<td style="font-size: 11px; padding: 5px;">There is not a direct API that will do this in one step in the Native File System API. </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Query </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffeecc" style="font-size: 11px; padding: 5px;">GAP (partial)</td>
<td style="font-size: 11px; padding: 5px;">Blob.size, FileSystemHandle.getFile(), FileSystemHandle.getDirectory(), File.lastModified </td>
<td bgcolor="#ffeecc" style="font-size: 11px; padding: 5px;">GAP (partial) - Blob.type can also be used to check the MIME type. The file system type, creation time, and last access time can not be determined with the Native File System API.</td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">ReadDirectoryEntries </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">FS (partial) </td>
<td style="font-size: 11px; padding: 5px;">FileSystemDirectoryHandle.getEntries() </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
</table>
<h3>PPB_FileSystem</h3>
<table>
<tr bgcolor="#77ccff" style="color:white; font-weight: bold;">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">PPAPI Method </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;">Assumes Threads </td>
<td style="font-size: 11px; padding: 5px;">Emscripten </td>
<td style="font-size: 11px; padding: 5px;">Web API </td>
<td style="font-size: 11px; padding: 5px;">Limitations </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Create </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">FS (partial) </td>
<td style="font-size: 11px; padding: 5px;">window.requestFileSystem </td>
<td style="font-size: 11px; padding: 5px;">JS API does both in one step </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Open </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td style="font-size: 11px; padding: 5px;">window.requestFileSystem </td>
<td style="font-size: 11px; padding: 5px;">JS API does both in one step </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetType </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td style="font-size: 11px; padding: 5px;">FileSystem.type </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
</table>
<h3>PPB_Fullscreen</h3>
<table>
<tr bgcolor="#77ccff" style="color:white; font-weight: bold;">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">PPAPI Method </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;">Assumes Threads </td>
<td style="font-size: 11px; padding: 5px;">Emscripten </td>
<td style="font-size: 11px; padding: 5px;">Web API </td>
<td style="font-size: 11px; padding: 5px;">Limitations </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">IsFullScreen </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">html5.h </td>
<td style="font-size: 11px; padding: 5px;">Document.fullscreenEnabled </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">SetFullscreen </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">html5.h </td>
<td style="font-size: 11px; padding: 5px;">Document.requestFullscreen </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetScreenSize </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">html5.h </td>
<td style="font-size: 11px; padding: 5px;">Document.exitFullscreen </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
</table>
<h3>PPB_Gamepad</h3>
<table>
<tr bgcolor="#77ccff" style="color:white; font-weight: bold;">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">PPAPI Method </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;">Assumes Threads </td>
<td style="font-size: 11px; padding: 5px;">Emscripten </td>
<td style="font-size: 11px; padding: 5px;">Web API </td>
<td style="font-size: 11px; padding: 5px;">Limitations </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Sample </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">SDL </td>
<td style="font-size: 11px; padding: 5px;">Gamepad.* </td>
<td style="font-size: 11px; padding: 5px;">The Gamepad object exposes a timestamp relative to navigationStart. It is updated when data is received from the hardware https://www.w3.org/TR/gamepad/#gamepad-interface </td>
</tr>
</table>
<h3>PPB_Graphics2D</h3>
<table>
<tr bgcolor="#77ccff" style="color:white; font-weight: bold;">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">PPAPI Method </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;">Assumes Threads </td>
<td style="font-size: 11px; padding: 5px;">Emscripten </td>
<td style="font-size: 11px; padding: 5px;">Web API </td>
<td style="font-size: 11px; padding: 5px;">Limitations </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Create </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">SDL </td>
<td style="font-size: 11px; padding: 5px;">Canvas.getContext('2d') </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Describe </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">SDL </td>
<td style="font-size: 11px; padding: 5px;">Canvas.clientWidth + Canvas.clientHeight </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">PaintImageData </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">SDL </td>
<td style="font-size: 11px; padding: 5px;">CanvasRenderingContext2D.putImageData </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Scroll </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td style="font-size: 11px; padding: 5px;">CanvasRenderingContext2D.scrollIntoView, CanvasRenderingContext2D.drawImage </td>
<td bgcolor="#ffeecc" style="font-size: 11px; padding: 5px;">GAP (partial) - Can be implemented by drawing the canvas onto itself, with an offset, using drawImage, and then filling in the rest.</td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">ReplaceContents </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">SDL </td>
<td style="font-size: 11px; padding: 5px;">CanvasRenderingContext2D.drawImage </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Flush </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td style="font-size: 11px; padding: 5px;">No direct equivalent </td>
<td bgcolor="#ffeecc" style="font-size: 11px; padding: 5px;">GAP (partial) -
There is always an implicit flush at the end of draw code; this is unlikely
to change. However, the combination of
<a href="https://html.spec.whatwg.org/multipage/canvas.html#the-offscreencanvas-interface">
OffscreenCanvas
</a> and
<a href="https://html.spec.whatwg.org/multipage/canvas.html#the-imagebitmap-rendering-context">
ImageBitmapRenderingContext
</a>provide similar functionality.</td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">SetScale </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">SDL </td>
<td style="font-size: 11px; padding: 5px;">CanvasRenderingContext2D.scale </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetScale </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">SDL </td>
<td style="font-size: 11px; padding: 5px;">CanvasRenderingContext2D.currentTransform </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">SetLayerTransform </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">SDL </td>
<td style="font-size: 11px; padding: 5px;">CanvasRenderingContext2D.setTransform
CanvasRenderingContext2D.scale
CanvasRenderingContext2D.translate </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
</table>
<h3>PPB_Graphics3D</h3>
<table>
<tr bgcolor="#77ccff" style="color:white; font-weight: bold;">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">PPAPI Method </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;">Assumes Threads </td>
<td style="font-size: 11px; padding: 5px;">Emscripten </td>
<td style="font-size: 11px; padding: 5px;">Web API </td>
<td style="font-size: 11px; padding: 5px;">Limitations </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetAttribMaxValue </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">OpenGL ES 3.0 </td>
<td style="font-size: 11px; padding: 5px;">WebGL 2.0 </td>
<td bgcolor="#ffeecc" style="font-size: 11px; padding: 5px;">GAP (partial) - WebGL 2.0 and Emscripten's exposure of OpenGL ES 3.0 support user-defined multisampled framebuffers, in which all of the parameters configurable via PPAPI can be set.</td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Create </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">SDL </td>
<td style="font-size: 11px; padding: 5px;">Canvas.getContext </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetAttribs </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">SDL </td>
<td style="font-size: 11px; padding: 5px;">WebGLRenderingContext.getContextAttributes </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">SetAttribs </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">SDL </td>
<td style="font-size: 11px; padding: 5px;">Canvas.getContext(.., OPTIONS) </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetError </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">SDL </td>
<td style="font-size: 11px; padding: 5px;">WebGLRenderingContext.getError </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">ResizeBuffers </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">SDL </td>
<td style="font-size: 11px; padding: 5px;">Canvas.width = w; Canvas.height = h; </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">SwapBuffers </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td style="font-size: 11px; padding: 5px;">No direct equivalent </td>
<td bgcolor="#ffeecc" style="font-size: 11px; padding: 5px;">GAP (partial) -
There is always an implicit flush at the end of draw code; this is unlikely
to change. However, the combination of
<a href="https://html.spec.whatwg.org/multipage/canvas.html#the-offscreencanvas-interface">
OffscreenCanvas
</a> and
<a href="https://html.spec.whatwg.org/multipage/canvas.html#the-imagebitmap-rendering-context">
ImageBitmapRenderingContext
</a> provide similar functionality.</td>
</tr>
</table>
<h3>PPB_ImageData</h3>
<table>
<tr bgcolor="#77ccff" style="color:white; font-weight: bold;">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">PPAPI Method </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;">Assumes Threads </td>
<td style="font-size: 11px; padding: 5px;">Emscripten </td>
<td style="font-size: 11px; padding: 5px;">Web API </td>
<td style="font-size: 11px; padding: 5px;">Limitations </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetNativeImageDataFormat </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">SDL </td>
<td style="font-size: 11px; padding: 5px;">ImageData mandates RGBA order </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">IsImageDataFormatSupported </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">SDL </td>
<td style="font-size: 11px; padding: 5px;">ImageData mandates RGBA order </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Create </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">SDL </td>
<td style="font-size: 11px; padding: 5px;">CanvasRenderingContext2d.createImageData </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Describe </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">SDL </td>
<td style="font-size: 11px; padding: 5px;">ImageData never has a stride </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Map </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">SDL </td>
<td style="font-size: 11px; padding: 5px;">ImageData.data </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Unmap </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">SDL </td>
<td style="font-size: 11px; padding: 5px;">ImageData.data </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
</table>
<h3>PPB_InputEvent</h3>
<table>
<tr bgcolor="#77ccff" style="color:white; font-weight: bold;">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">PPAPI Method </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;">Assumes Threads </td>
<td style="font-size: 11px; padding: 5px;">Emscripten </td>
<td style="font-size: 11px; padding: 5px;">Web API </td>
<td style="font-size: 11px; padding: 5px;">Limitations </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">RequestInputEvents </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">SDL </td>
<td style="font-size: 11px; padding: 5px;">No direct equivalent </td>
<td style="font-size: 11px; padding: 5px;">The lack of this feature is probably less relevant as JS / Wasm runs on the main thread and can more cheaply filter events without incurring a cross process round-trip. </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">RequestFilteringInputEvents </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">SDL </td>
<td style="font-size: 11px; padding: 5px;">mouse* key* wheel* touch* composition* Events </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;"> </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">SDL </td>
<td style="font-size: 11px; padding: 5px;">Element.addEventListener </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">ClearInputEventRequest </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">SDL </td>
<td style="font-size: 11px; padding: 5px;">Element.removeEventListener </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetType </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">SDL </td>
<td style="font-size: 11px; padding: 5px;">Event class descendants </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetTimeStamp </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">SDL </td>
<td style="font-size: 11px; padding: 5px;">Event.timeStamp </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetModifiers </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">SDL </td>
<td style="font-size: 11px; padding: 5px;">*Event.altKey/shiftKey/metaKey/ctrlKey </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
</table>
<h3>PPB_MouseInputEvent</h3>
<table>
<tr bgcolor="#77ccff" style="color:white; font-weight: bold;">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">PPAPI Method </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;">Assumes Threads </td>
<td style="font-size: 11px; padding: 5px;">Emscripten </td>
<td style="font-size: 11px; padding: 5px;">Web API </td>
<td style="font-size: 11px; padding: 5px;">Limitations </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Create </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">SDL </td>
<td style="font-size: 11px; padding: 5px;">MouseEvent </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetButton </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">SDL </td>
<td style="font-size: 11px; padding: 5px;">MouseEvent.button </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetPosition </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">SDL </td>
<td style="font-size: 11px; padding: 5px;">MouseEvent.client*/page*/offset* </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetClickCount </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">SDL </td>
<td style="font-size: 11px; padding: 5px;">dblclick' vs 'mousedown' Events </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetMovement </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">SDL </td>
<td style="font-size: 11px; padding: 5px;">MouseEvent.movement* </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
</table>
<h3>PPB_WheelInputEvent</h3>
<table>
<tr bgcolor="#77ccff" style="color:white; font-weight: bold;">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">PPAPI Method </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;">Assumes Threads </td>
<td style="font-size: 11px; padding: 5px;">Emscripten </td>
<td style="font-size: 11px; padding: 5px;">Web API </td>
<td style="font-size: 11px; padding: 5px;">Limitations </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Create </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">SDL </td>
<td style="font-size: 11px; padding: 5px;">WheelEvent </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetDelta </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">SDL </td>
<td style="font-size: 11px; padding: 5px;">WheelEvent.delta* </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetTicks </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP - deltaMode kind of contains this info, but incompletely.</td>
<td style="font-size: 11px; padding: 5px;">There is discussion on implementing a WheelEvent.deltaMode API: https://github.com/w3c/uievents/issues/181#issuecomment-537811017 </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetScrollByPage </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP - deltaMode kind of contains this info, but incompletely.</td>
<td style="font-size: 11px; padding: 5px;">There is discussion on implementing a WheelEvent.deltaMode API: https://github.com/w3c/uievents/issues/181#issuecomment-537811017 </td>
</tr>
</table>
<h3>PPB_KeyboardInputEvent</h3>
<table>
<tr bgcolor="#77ccff" style="color:white; font-weight: bold;">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">PPAPI Method </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;">Assumes Threads </td>
<td style="font-size: 11px; padding: 5px;">Emscripten </td>
<td style="font-size: 11px; padding: 5px;">Web API </td>
<td style="font-size: 11px; padding: 5px;">Limitations </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Create </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">SDL </td>
<td style="font-size: 11px; padding: 5px;">KeyboardEvent </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetKeyCode </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">SDL </td>
<td style="font-size: 11px; padding: 5px;">KeyboardEvent.keyCode </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetCharacterText </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">SDL </td>
<td style="font-size: 11px; padding: 5px;">KeyboardEvent.key </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetCode </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">SDL </td>
<td style="font-size: 11px; padding: 5px;">KeyboardEvent.code </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
</table>
<h3>PPB_TouchInputEvent</h3>
<table>
<tr bgcolor="#77ccff" style="color:white; font-weight: bold;">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">PPAPI Method </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;">Assumes Threads </td>
<td style="font-size: 11px; padding: 5px;">Emscripten </td>
<td style="font-size: 11px; padding: 5px;">Web API </td>
<td style="font-size: 11px; padding: 5px;">Limitations </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Create </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">SDL </td>
<td style="font-size: 11px; padding: 5px;">TouchEvent </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">AddTouchPoint </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">SDL </td>
<td style="font-size: 11px; padding: 5px;">TouchEvent.touches.push </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetTouchCount </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">SDL </td>
<td style="font-size: 11px; padding: 5px;">TouchEvent.touches.length </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetTouchByIndex </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">SDL </td>
<td style="font-size: 11px; padding: 5px;">TouchEvent.touches[i] </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetTouchById </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">SDL </td>
<td style="font-size: 11px; padding: 5px;">Touch.indentifer (to figure this out yourself) </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
</table>
<h3>PPB_IMEInputEvent</h3>
<table>
<tr bgcolor="#77ccff" style="color:white; font-weight: bold;">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">PPAPI Method </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;">Assumes Threads </td>
<td style="font-size: 11px; padding: 5px;">Emscripten </td>
<td style="font-size: 11px; padding: 5px;">Web API </td>
<td style="font-size: 11px; padding: 5px;">Limitations </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Create </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td style="font-size: 11px; padding: 5px;">CompositionEvent </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetText </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td style="font-size: 11px; padding: 5px;">CompositionEvent.data </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetSegmentNumber </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP - No direct equivalent</td>
<td style="font-size: 11px; padding: 5px;">This data can potentially be retrieved from CompositionEvent.data. </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetSegmentOffset </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP - No direct equivalent</td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetTargetSegment </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP - No direct equivalent</td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetSelection </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP - No direct equivalent</td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
</table>
<h3>PPB_Instance</h3>
<table>
<tr bgcolor="#77ccff" style="color:white; font-weight: bold;">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">PPAPI Method </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;">Assumes Threads </td>
<td style="font-size: 11px; padding: 5px;">Emscripten </td>
<td style="font-size: 11px; padding: 5px;">Web API </td>
<td style="font-size: 11px; padding: 5px;">Limitations </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">BindGraphics </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">SDL </td>
<td style="font-size: 11px; padding: 5px;">Canvas.getContext (moot as binding is automatic). </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">IsFullFrame </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP - No equivalent to mime type handlers.</td>
<td style="font-size: 11px; padding: 5px;">NaCl apps can be registered to handle a particular mime type and own the whole document. </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">DidCreate </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">N/A </td>
<td style="font-size: 11px; padding: 5px;"><Element>[key] </td>
<td style="font-size: 11px; padding: 5px;">General DOM access lets you fish out tag attributes </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">DidDestroy </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">N/A </td>
<td style="font-size: 11px; padding: 5px;">N/A </td>
<td style="font-size: 11px; padding: 5px;">Not triggered for NaCl </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">DidChangeView </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">N/A </td>
<td style="font-size: 11px; padding: 5px;">Element 'resize' Event </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">DidChangeFocus </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">N/A </td>
<td style="font-size: 11px; padding: 5px;">Element 'focus', 'focusin', 'focusout' Events </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">HandleDocumentLoad </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">N/A </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP - No way to register as a mime type handler</td>
<td style="font-size: 11px; padding: 5px;">NaCl modules via apps + a manifest entry can be set up to handle particular mime types. </td>
</tr>
</table>
<h3>PPB_MediaStreamAudioTrack</h3>
<table>
<tr bgcolor="#77ccff" style="color:white; font-weight: bold;">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">PPAPI Method </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;">Assumes Threads </td>
<td style="font-size: 11px; padding: 5px;">Emscripten </td>
<td style="font-size: 11px; padding: 5px;">Web API </td>
<td style="font-size: 11px; padding: 5px;">Limitations </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Configure </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td style="font-size: 11px; padding: 5px;">getUserMedia() </td>
<td style="font-size: 11px; padding: 5px;">The constraints from getUserMedia() can provide the configuration values to use in MediaStreamTrack. </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetAttrib </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td style="font-size: 11px; padding: 5px;">MediaStreamTrack.getSettings() </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetId </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td style="font-size: 11px; padding: 5px;">MediaStreamTrack.id </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">HasEnded </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td style="font-size: 11px; padding: 5px;">MediaStreamTrack.readyState </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetBuffer </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP - No equivalent</td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">RecycleBuffer </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP - No equivalent</td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Close </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td style="font-size: 11px; padding: 5px;">MediaStreamTrack.stop() </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
</table>
<h3>PPB_MediaStreamVideoTrack</h3>
<table>
<tr bgcolor="#77ccff" style="color:white; font-weight: bold;">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">PPAPI Method </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;">Assumes Threads </td>
<td style="font-size: 11px; padding: 5px;">Emscripten </td>
<td style="font-size: 11px; padding: 5px;">Web API </td>
<td style="font-size: 11px; padding: 5px;">Limitations </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Create </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td style="font-size: 11px; padding: 5px;">Canvas Capture </td>
<td style="font-size: 11px; padding: 5px;">Canvas Capture provides the ability to introduce video frames programatically. </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Configure </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td style="font-size: 11px; padding: 5px;">applyConstraints(), getUserMedia() </td>
<td bgcolor="#ffeecc" style="font-size: 11px; padding: 5px;">GAP (partial) - The extent of configurations available in the Web API may differ from the PPAPI.</td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetAttrib </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td style="font-size: 11px; padding: 5px;">MediaStreamSettings.width </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;"> </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td style="font-size: 11px; padding: 5px;">MediaStreamSettings.height </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;"> </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP - no equivalent to PP_MEDIASTREAMVIDEOTRACK_ATTRIB_BUFFERED_FRAMES</td>
<td style="font-size: 11px; padding: 5px;">MediaStream cannot be preloaded, so it will never buffer: https://www.w3.org/TR/mediacapture-streams/#mediastreams-in-media-elements </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;"> </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP - no equivalent to PP_MEDIASTREAMVIDEOTRACK_ATTRIB_FORMAT</td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetId </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td style="font-size: 11px; padding: 5px;">MediaStreamTrack.id </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">HasEnded </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td style="font-size: 11px; padding: 5px;">MediaStreamTrack.readyState </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetFrame </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP - No equivalent</td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">RecycleFrame </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP - No equivalent</td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Close </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td style="font-size: 11px; padding: 5px;">MediaStreamTrack.stop() </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetEmptyFrame </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP - No equivalent</td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">PutFrame </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP - No equivalent</td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
</table>
<h3>PPB_MessageLoop</h3>
<table>
<tr bgcolor="#77ccff" style="color:white; font-weight: bold;">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">PPAPI Method </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;">Assumes Threads </td>
<td style="font-size: 11px; padding: 5px;">Emscripten </td>
<td style="font-size: 11px; padding: 5px;">Web API </td>
<td style="font-size: 11px; padding: 5px;">Limitations </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Create </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">N/A </td>
<td style="font-size: 11px; padding: 5px;">Mostly moot, workers get an implicit event loop. </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetForMainThread </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">N/A </td>
<td style="font-size: 11px; padding: 5px;">Mostly moot, workers get an implicit event loop. </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetCurrent </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">N/A </td>
<td style="font-size: 11px; padding: 5px;">Mostly moot, workers get an implicit event loop. </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">AttachToCurrentThread </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">N/A </td>
<td style="font-size: 11px; padding: 5px;">Mostly moot, workers get an implicit event loop. </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Run </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">N/A </td>
<td style="font-size: 11px; padding: 5px;">Mostly moot, workers get an implicit event loop. </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">PostWork </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">N/A </td>
<td style="font-size: 11px; padding: 5px;">Mostly moot, workers get an implicit event loop. </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">PostQuit </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">N/A </td>
<td style="font-size: 11px; padding: 5px;">Mostly moot, workers get an implicit event loop. </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
</table>
<h3>PPB_Messaging</h3>
<table>
<tr bgcolor="#77ccff" style="color:white; font-weight: bold;">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">PPAPI Method </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;">Assumes Threads </td>
<td style="font-size: 11px; padding: 5px;">Emscripten </td>
<td style="font-size: 11px; padding: 5px;">Web API </td>
<td style="font-size: 11px; padding: 5px;">Limitations </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">PostMessage </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">N/A </td>
<td style="font-size: 11px; padding: 5px;">Window.postMessage </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">RegisterMessageHandler </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">N/A </td>
<td style="font-size: 11px; padding: 5px;">Window.addEventListener </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">UnregisterMessageHandler </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">N/A </td>
<td style="font-size: 11px; padding: 5px;">Window.removeEventListener </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
</table>
<h3>PPB_MouseCursor</h3>
<table>
<tr bgcolor="#77ccff" style="color:white; font-weight: bold;">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">PPAPI Method </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;">Assumes Threads </td>
<td style="font-size: 11px; padding: 5px;">Emscripten </td>
<td style="font-size: 11px; padding: 5px;">Web API </td>
<td style="font-size: 11px; padding: 5px;">Limitations </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">SetCursor </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">SDL </td>
<td style="font-size: 11px; padding: 5px;">Element.style.cursor </td>
<td style="font-size: 11px; padding: 5px;">Same set of stock cursors are supported.
Custom cursors can be done with url(..).
Dynamic custom cursors can be done with data URIs.
CSS3 supports specifying the hotspot. </td>
</tr>
</table>
<h3>PPB_MouseLock</h3>
<table>
<tr bgcolor="#77ccff" style="color:white; font-weight: bold;">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">PPAPI Method </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;">Assumes Threads </td>
<td style="font-size: 11px; padding: 5px;">Emscripten </td>
<td style="font-size: 11px; padding: 5px;">Web API </td>
<td style="font-size: 11px; padding: 5px;">Limitations </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">LockMouse </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">SDL </td>
<td style="font-size: 11px; padding: 5px;">Element.requestPointerLock </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">UnlockMouse </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">SDL </td>
<td style="font-size: 11px; padding: 5px;">Element.exitPointerLock </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
</table>
<h3>PPB_OpenGLES2</h3>
<table>
<tr bgcolor="#77ccff" style="color:white; font-weight: bold;">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">PPAPI Method </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;">Assumes Threads </td>
<td style="font-size: 11px; padding: 5px;">Emscripten </td>
<td style="font-size: 11px; padding: 5px;">Web API </td>
<td style="font-size: 11px; padding: 5px;">Limitations </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Several Methods </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">OpenGLES </td>
<td style="font-size: 11px; padding: 5px;">Close to WebGL 1.0 in functionality. </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;"> </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;">x </td>
<td style="font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">OffscreenCanvas </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
</table>
<h3>PPB_TextInputController</h3>
<table>
<tr bgcolor="#77ccff" style="color:white; font-weight: bold;">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">PPAPI Method </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;">Assumes Threads </td>
<td style="font-size: 11px; padding: 5px;">Emscripten </td>
<td style="font-size: 11px; padding: 5px;">Web API </td>
<td style="font-size: 11px; padding: 5px;">Limitations </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">SetTextInputType </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP - Potentially filled by Input Method Editor API</td>
<td style="font-size: 11px; padding: 5px;">Some developers would like to either be able to hint in this fashion, or preferrably the ability to intercept and display IME events / output inline inside a canvas. </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">UpdateCaretPosition </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP - Potentially filled by Input Method Editor API</td>
<td style="font-size: 11px; padding: 5px;">https://www.w3.org/TR/ime-api/ </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">CancelCompositionText </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP - Potentially filled by Input Method Editor API</td>
<td style="font-size: 11px; padding: 5px;">https://www.w3.org/TR/ime-api/ </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">UpdateSurroundingText </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP - Potentially filled by Input Method Editor API</td>
<td style="font-size: 11px; padding: 5px;">https://www.w3.org/TR/ime-api/ </td>
</tr>
</table>
<h3>PPB_URLLoader</h3>
<table>
<tr bgcolor="#77ccff" style="color:white; font-weight: bold;">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">PPAPI Method </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;">Assumes Threads </td>
<td style="font-size: 11px; padding: 5px;">Emscripten </td>
<td style="font-size: 11px; padding: 5px;">Web API </td>
<td style="font-size: 11px; padding: 5px;">Limitations </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Create </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">embind </td>
<td style="font-size: 11px; padding: 5px;">new XMLHttpRequest(); </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Open </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">embind </td>
<td style="font-size: 11px; padding: 5px;">XMLHttpRequest.open </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">FollowRedirect </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">embind </td>
<td style="font-size: 11px; padding: 5px;">Request.redirect </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;"> </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP - No XMLHTTPRequest equivalent</td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetUploadProgress </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">embind </td>
<td style="font-size: 11px; padding: 5px;">XMLHttpRequest 'progress' Event </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;"> </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td style="font-size: 11px; padding: 5px;">FetchObserver </td>
<td style="font-size: 11px; padding: 5px;">Not specced or implemented yet; https://github.com/whatwg/fetch/issues/607 </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetDownloadProgress </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">embind </td>
<td style="font-size: 11px; padding: 5px;">XMLHttpRequest 'progress' Event </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;"> </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td style="font-size: 11px; padding: 5px;">FetchObserver </td>
<td style="font-size: 11px; padding: 5px;">Not specced or implemented yet; https://github.com/whatwg/fetch/issues/607 </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetResponseInfo </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">embind </td>
<td style="font-size: 11px; padding: 5px;">XMLHttpRequest.getAllResponseHeaders </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;"> </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">embind </td>
<td style="font-size: 11px; padding: 5px;">Fetch Response.* </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">ReadResponseBody </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">embind </td>
<td style="font-size: 11px; padding: 5px;">XMLHttpRequest.response </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;"> </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">embind </td>
<td style="font-size: 11px; padding: 5px;">Body.* (Response is a Body) </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">FinishStreamingToFile </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">embind </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP - No direct equivalent</td>
<td style="font-size: 11px; padding: 5px;">XMLHttpRequest and Fetch both assume streaming to memory, rather than directly to a storage. </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Close </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">embind </td>
<td style="font-size: 11px; padding: 5px;">XMLHttpRequest.abort </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;"> </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td style="font-size: 11px; padding: 5px;">Fetch API: AbortSignal and AbortController </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
</table>
<h3>PPB_URLRequestInfo</h3>
<table>
<tr bgcolor="#77ccff" style="color:white; font-weight: bold;">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">PPAPI Method </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;">Assumes Threads </td>
<td style="font-size: 11px; padding: 5px;">Emscripten </td>
<td style="font-size: 11px; padding: 5px;">Web API </td>
<td style="font-size: 11px; padding: 5px;">Limitations </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Create </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">embind </td>
<td style="font-size: 11px; padding: 5px;">XMLHttpRequest </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;"> </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">embind </td>
<td style="font-size: 11px; padding: 5px;">Fetch Request </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">SetProperty </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP - No direct equivalent for XMLHttpRequest</td>
<td style="font-size: 11px; padding: 5px;">XMLHttpRequest doesn't provide direct ways to per-request limit following redirects, stream to a file, set referrer or credentials policy. </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;"> </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">embind </td>
<td style="font-size: 11px; padding: 5px;">Request.* </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">AppendDataToBody </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">embind </td>
<td style="font-size: 11px; padding: 5px;">XMLHttpRequest.send </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP - Both must have the whole body, rather than a chunk.</td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;"> </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">embind </td>
<td style="font-size: 11px; padding: 5px;">fetch(.., options:body) </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">AppendFileToBody </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td style="font-size: 11px; padding: 5px;">fetch() upload streaming </td>
<td style="font-size: 11px; padding: 5px;">https://www.chromestatus.com/feature/5274139738767360 </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;"> </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">N/A </td>
<td style="font-size: 11px; padding: 5px;"><form> </td>
<td style="font-size: 11px; padding: 5px;">You can also read with FileReader and upload, but that's more like AppendDataToBody </td>
</tr>
</table>
<h3>PPB_URLResponseInfo</h3>
<table>
<tr bgcolor="#77ccff" style="color:white; font-weight: bold;">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">PPAPI Method </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;">Assumes Threads </td>
<td style="font-size: 11px; padding: 5px;">Emscripten </td>
<td style="font-size: 11px; padding: 5px;">Web API </td>
<td style="font-size: 11px; padding: 5px;">Limitations </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetProperty </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">embind </td>
<td style="font-size: 11px; padding: 5px;">XMLHttpRequest.getAllResponseHeaders + others </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;"> </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">embind </td>
<td style="font-size: 11px; padding: 5px;">Fetch Response.* </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetBodyAsFileRef </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">embind </td>
<td style="font-size: 11px; padding: 5px;">Fetch Response (Body) .blob() </td>
<td style="font-size: 11px; padding: 5px;">Assumes storage layer optimizes transfer. </td>
</tr>
</table>
<h3>PPB_Var</h3>
<table>
<tr bgcolor="#77ccff" style="color:white; font-weight: bold;">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">PPAPI Method </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;">Assumes Threads </td>
<td style="font-size: 11px; padding: 5px;">Emscripten </td>
<td style="font-size: 11px; padding: 5px;">Web API </td>
<td style="font-size: 11px; padding: 5px;">Limitations </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">VarFromUtf8 </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">embind </td>
<td style="font-size: 11px; padding: 5px;">TextDecoder.decode </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">VarToUtf8 </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">embind </td>
<td style="font-size: 11px; padding: 5px;">TextEncoder.encode </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">VarFromResource </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">N/A </td>
<td style="font-size: 11px; padding: 5px;">N/A </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">VarToResource </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">N/A </td>
<td style="font-size: 11px; padding: 5px;">N/A </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
</table>
<h3>PPB_VarArray</h3>
<table>
<tr bgcolor="#77ccff" style="color:white; font-weight: bold;">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">PPAPI Method </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;">Assumes Threads </td>
<td style="font-size: 11px; padding: 5px;">Emscripten </td>
<td style="font-size: 11px; padding: 5px;">Web API </td>
<td style="font-size: 11px; padding: 5px;">Limitations </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Get </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">embind </td>
<td style="font-size: 11px; padding: 5px;">Array[i] </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Set </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">embind </td>
<td style="font-size: 11px; padding: 5px;">Array[i] = x </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetLength </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">embind </td>
<td style="font-size: 11px; padding: 5px;">Array.length </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">SetLength </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">embind </td>
<td style="font-size: 11px; padding: 5px;">Array.length = n </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
</table>
<h3>PPB_VarArrayBuffer</h3>
<table>
<tr bgcolor="#77ccff" style="color:white; font-weight: bold;">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">PPAPI Method </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;">Assumes Threads </td>
<td style="font-size: 11px; padding: 5px;">Emscripten </td>
<td style="font-size: 11px; padding: 5px;">Web API </td>
<td style="font-size: 11px; padding: 5px;">Limitations </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Create </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">embind </td>
<td style="font-size: 11px; padding: 5px;">new ArrayBuffer(n) </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">ByteLength </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">embind </td>
<td style="font-size: 11px; padding: 5px;">ArrayBuffer.byteLength </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Map </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP - No direct equivalent</td>
<td style="font-size: 11px; padding: 5px;">Asm.js / Wasm modules are unable to map regions of an ArrayBuffer other than their single linear memory heap.
Future multiple memories or memory mapping might improve this. </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Unmap </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP - No direct equivalent</td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
</table>
<h3>PPB_VarDictionary</h3>
<table>
<tr bgcolor="#77ccff" style="color:white; font-weight: bold;">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">PPAPI Method </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;">Assumes Threads </td>
<td style="font-size: 11px; padding: 5px;">Emscripten </td>
<td style="font-size: 11px; padding: 5px;">Web API </td>
<td style="font-size: 11px; padding: 5px;">Limitations </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Create </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">embind </td>
<td style="font-size: 11px; padding: 5px;">{} </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Get </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">embind </td>
<td style="font-size: 11px; padding: 5px;"><Object>[i] </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Set </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">embind </td>
<td style="font-size: 11px; padding: 5px;"><Object>[i] = x </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Delete </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">embind </td>
<td style="font-size: 11px; padding: 5px;">delete <Object>[i] </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">HasKey </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">embind </td>
<td style="font-size: 11px; padding: 5px;">x in <Object> </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetKeys </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">embind </td>
<td style="font-size: 11px; padding: 5px;">for (k in <Object>) {} </td>
<td style="font-size: 11px; padding: 5px;">No literal equivalent, but it can be built. </td>
</tr>
</table>
<h3>PPB_VideoDecoder</h3>
<table>
<tr bgcolor="#77ccff" style="color:white; font-weight: bold;">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">PPAPI Method </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;">Assumes Threads </td>
<td style="font-size: 11px; padding: 5px;">Emscripten </td>
<td style="font-size: 11px; padding: 5px;">Web API </td>
<td style="font-size: 11px; padding: 5px;">Limitations </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Create </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP - Would be handled with the proposed WebCodecs API using VideoDecoder()</td>
<td style="font-size: 11px; padding: 5px;">https://github.com/WICG/web-codecs/blob/master/explainer.md#example-of-decode-for-low-latency-live-streaming-or-cloud-gaming </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Initialize </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP - Would be handled with the proposed WebCodecs API using VideoDecoder() initialization parameters (VideoDecoderInitParameters)</td>
<td style="font-size: 11px; padding: 5px;">https://github.com/WICG/web-codecs/blob/master/explainer.md#example-of-decode-for-low-latency-live-streaming-or-cloud-gaming </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Decode </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP - Would be handled with the proposed WebCodecs API using ReadableStream.pipeThrough(VideoDecoder)</td>
<td style="font-size: 11px; padding: 5px;">https://github.com/WICG/web-codecs/blob/master/explainer.md#example-of-decode-for-low-latency-live-streaming-or-cloud-gaming </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetPicture </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP - Would be handled with the proposed WebCodecs API using ReadableStream.pipeThrough(VideoDecoder).pipeTo(VideoTrackWriter().writable)</td>
<td style="font-size: 11px; padding: 5px;">https://github.com/WICG/web-codecs/blob/master/explainer.md#example-of-decode-for-low-latency-live-streaming-or-cloud-gaming </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">RecyclePicture </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP - Would be handled with the proposed WebCodecs API. The current design will automatically recycle the pictures and keep the decoding process going.</td>
<td style="font-size: 11px; padding: 5px;">https://github.com/WICG/web-codecs/blob/master/explainer.md#example-of-decode-for-low-latency-live-streaming-or-cloud-gaming </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Flush </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP - Would be handled with the proposed WebCodecs API. The API will be called Flush(), however there is still discussion on how it will be sequenced in relation to decode calls.</td>
<td style="font-size: 11px; padding: 5px;">https://github.com/WICG/web-codecs/blob/master/explainer.md#example-of-decode-for-low-latency-live-streaming-or-cloud-gaming </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Reset </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP - Would be handled with the proposed WebCodecs API by destroying the VideoDecoder instance and creating a new one. This won't be as efficient as a dedicated reset method, but the semantics for a Reset() API is still being discussed.</td>
<td style="font-size: 11px; padding: 5px;">https://github.com/WICG/web-codecs/blob/master/explainer.md#example-of-decode-for-low-latency-live-streaming-or-cloud-gaming </td>
</tr>
</table>
<h3>PPB_VideoEncoder</h3>
<table>
<tr bgcolor="#77ccff" style="color:white; font-weight: bold;">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">PPAPI Method </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;">Assumes Threads </td>
<td style="font-size: 11px; padding: 5px;">Emscripten </td>
<td style="font-size: 11px; padding: 5px;">Web API </td>
<td style="font-size: 11px; padding: 5px;">Limitations </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Create </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP - Would be handled with the proposed WebCodecs API using VideoEncoder()</td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetSupportedProfiles </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td bgcolor="#ffeecc" style="font-size: 11px; padding: 5px;">GAP (partial) - navigator.mediaCapabilities.encodingInfo()</td>
<td style="font-size: 11px; padding: 5px;">The supported profiles have to be checked one by one. </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Initialize </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP - Would be handled with the proposed WebCodecs API using VideoEncoder() initialization parameters</td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetFramesRequired </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP - No equivalent</td>
<td style="font-size: 11px; padding: 5px;">It is unlikely that the frame pool used internally by the Web Codecs API is exposed. </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetFrameCodedSize </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP - No equivalent</td>
<td style="font-size: 11px; padding: 5px;">It is unlikely that the frame pool used internally by the Web Codecs API is exposed. </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetVideoFrame </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP - Would be handled with the proposed WebCodecs API by using ReadableStream.pipeThrough(VideoEncoder). This would directly encode the data in the Readable stream instead of grabbing a single frame to fill with data before encoding.</td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Encode </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP - Would be handled with the proposed WebCodecs API using ReadableStream.pipeThrough(VideoEncoder)</td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetBitstreamBuffer </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP - Would be handled with the proposed WebCodecs API. The current design will automatically go through the encoded bitstream buffer that is piped through.</td>
<td style="font-size: 11px; padding: 5px;">The WebCodecs API currently assumes that bitstream buffer can be copied rather than pooled, so it will not need to be recycled. </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">RecycleBitstreamBuffer </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP - Would be handled with the proposed WebCodecs API. The current design will automatically recycle the buffer to keep the encoding process going.</td>
<td style="font-size: 11px; padding: 5px;">This is unlikely to change in the future as performance implications are smaller. </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">RequestEncodingParametersChange </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP - Would be handled by the proposed Web Codecs API. Certain parameters will have the capability of being changed on the fly, while others will require the encoder to be torn down.</td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Close </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP - Would be handled with the proposed WebCodecs API by using VideoEncoder.Close()</td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
</table>
<h3>PPB_VideoFrame</h3>
<table>
<tr bgcolor="#77ccff" style="color:white; font-weight: bold;">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">PPAPI Method </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;">Assumes Threads </td>
<td style="font-size: 11px; padding: 5px;">Emscripten </td>
<td style="font-size: 11px; padding: 5px;">Web API </td>
<td style="font-size: 11px; padding: 5px;">Limitations </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetTimestamp </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP - Would be handled with the proposed WebCodecs API.</td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">SetTimestamp </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP - Would be handled with the proposed WebCodecs API.</td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetFormat </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP - Would be handled with the proposed WebCodecs API.</td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetSize </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP - Would be handled with the proposed WebCodecs API.</td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetDataBuffer </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP - Would be handled with the proposed WebCodecs API.</td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetDataBufferSize </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP - Would be handled with the proposed WebCodecs API.</td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
</table>
<h3>PPB_View</h3>
<table>
<tr bgcolor="#77ccff" style="color:white; font-weight: bold;">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">PPAPI Method </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;">Assumes Threads </td>
<td style="font-size: 11px; padding: 5px;">Emscripten </td>
<td style="font-size: 11px; padding: 5px;">Web API </td>
<td style="font-size: 11px; padding: 5px;">Limitations </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetRect </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">embind </td>
<td style="font-size: 11px; padding: 5px;">Element.getBoundingClientRect </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">IsFullscreen </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">embind </td>
<td style="font-size: 11px; padding: 5px;">Document.fullScreenEnabled </td>
<td style="font-size: 11px; padding: 5px;">Pertains to document instead of just single element. </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">IsVisible </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">embind </td>
<td style="font-size: 11px; padding: 5px;">IntersectionObserver </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">IsPageVisible </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">embind </td>
<td style="font-size: 11px; padding: 5px;">document.visibilityState </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetClipRect </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">embind </td>
<td style="font-size: 11px; padding: 5px;">IntersectionObserver </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetDeviceScale </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">embind </td>
<td style="font-size: 11px; padding: 5px;">window.devicePixelRatio </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetCSSScale </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">embind </td>
<td style="font-size: 11px; padding: 5px;"><Element>.getBoundingClientRect().width / <Element>.offsetWidth </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetScrollOffset </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">embind </td>
<td style="font-size: 11px; padding: 5px;"><Element>.scrollTop / <Element>.scrollLeft </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
</table>
<h3>PPB_WebSocket</h3>
<table>
<tr bgcolor="#77ccff" style="color:white; font-weight: bold;">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">PPAPI Method </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;">Assumes Threads </td>
<td style="font-size: 11px; padding: 5px;">Emscripten </td>
<td style="font-size: 11px; padding: 5px;">Web API </td>
<td style="font-size: 11px; padding: 5px;">Limitations </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Create </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td style="font-size: 11px; padding: 5px;">WebSocket.WebSocket </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Connect </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td style="font-size: 11px; padding: 5px;">WebSocket.WebSocket(url, ...)
WebSocket 'open' Event </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Close </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td style="font-size: 11px; padding: 5px;">WebSocket.close </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">ReceiveMessage </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td style="font-size: 11px; padding: 5px;">WebSocket 'message' Event
WebSocket 'error' Event
WebSocket 'close' Event </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">SendMessage </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td style="font-size: 11px; padding: 5px;">WebSocket.send </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetBufferedAmount </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td style="font-size: 11px; padding: 5px;">WebSocket.bufferedAmount </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetCloseCode </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td style="font-size: 11px; padding: 5px;">CloseEvent.code </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetCloseReason </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td style="font-size: 11px; padding: 5px;">CloseEvent.reason </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetCloseWasClean </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td style="font-size: 11px; padding: 5px;">CloseEvent.wasClean </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetExtensions </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td style="font-size: 11px; padding: 5px;">WebSocket.extensions </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetProtocol </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td style="font-size: 11px; padding: 5px;">WebSocket.protocol </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetReadyState </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td style="font-size: 11px; padding: 5px;">WebSocket.readyState </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetURL </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td style="font-size: 11px; padding: 5px;">WebSocket.url </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
</table>
<h3>PPP_Graphics3D</h3>
<table>
<tr bgcolor="#77ccff" style="color:white; font-weight: bold;">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">PPAPI Method </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;">Assumes Threads </td>
<td style="font-size: 11px; padding: 5px;">Emscripten </td>
<td style="font-size: 11px; padding: 5px;">Web API </td>
<td style="font-size: 11px; padding: 5px;">Limitations </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Graphics3DContextLost </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">SDL </td>
<td style="font-size: 11px; padding: 5px;">Canvas 'webglcontextlost' Event </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
</table>
<h3>PPP_InputEvent</h3>
<table>
<tr bgcolor="#77ccff" style="color:white; font-weight: bold;">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">PPAPI Method </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;">Assumes Threads </td>
<td style="font-size: 11px; padding: 5px;">Emscripten </td>
<td style="font-size: 11px; padding: 5px;">Web API </td>
<td style="font-size: 11px; padding: 5px;">Limitations </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">HandleInputEvent </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">SDL </td>
<td style="font-size: 11px; padding: 5px;">Element.addEventListener </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
</table>
<h3>PPP_Instance</h3>
<table>
<tr bgcolor="#77ccff" style="color:white; font-weight: bold;">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">PPAPI Method </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;">Assumes Threads </td>
<td style="font-size: 11px; padding: 5px;">Emscripten </td>
<td style="font-size: 11px; padding: 5px;">Web API </td>
<td style="font-size: 11px; padding: 5px;">Limitations </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">DidCreate </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">N/A </td>
<td style="font-size: 11px; padding: 5px;"><Element>[key] </td>
<td style="font-size: 11px; padding: 5px;">General DOM access lets you fish out tag attributes </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">DidDestroy </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">N/A </td>
<td style="font-size: 11px; padding: 5px;">N/A </td>
<td style="font-size: 11px; padding: 5px;">Not triggered for NaCl </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">DidChangeView </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">N/A </td>
<td style="font-size: 11px; padding: 5px;">Element 'resize' Event </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">DidChangeFocus </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">N/A </td>
<td style="font-size: 11px; padding: 5px;">Element 'focus', 'focusin', 'focusout' Events </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">HandleDocumentLoad </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">N/A </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP - No way to register as a mime type handler</td>
<td style="font-size: 11px; padding: 5px;">NaCl Modules via apps + a manifest entry can be set up to handle particular mime types. </td>
</tr>
</table>
<h3>PPP_MessageHandler</h3>
<table>
<tr bgcolor="#77ccff" style="color:white; font-weight: bold;">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">PPAPI Method </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;">Assumes Threads </td>
<td style="font-size: 11px; padding: 5px;">Emscripten </td>
<td style="font-size: 11px; padding: 5px;">Web API </td>
<td style="font-size: 11px; padding: 5px;">Limitations </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">HandleMessage </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">embind </td>
<td style="font-size: 11px; padding: 5px;">MessagePort 'message' Event
Window 'message' Event </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">HandleBlockingMessage </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">N/A </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP - No direct equivalent</td>
<td style="font-size: 11px; padding: 5px;">Similar synchronization can be done off main thread with Atomics.wait. This was added to support emulation of synchronous plugin APIs. </td>
</tr>
</table>
<h3>PPP_Messaging</h3>
<table>
<tr bgcolor="#77ccff" style="color:white; font-weight: bold;">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">PPAPI Method </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;">Assumes Threads </td>
<td style="font-size: 11px; padding: 5px;">Emscripten </td>
<td style="font-size: 11px; padding: 5px;">Web API </td>
<td style="font-size: 11px; padding: 5px;">Limitations </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">HandleMessage </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">embind </td>
<td style="font-size: 11px; padding: 5px;">MessagePort 'message' Event
Window 'message' Event </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
</table>
<h3>PPP_MouseLock</h3>
<table>
<tr bgcolor="#77ccff" style="color:white; font-weight: bold;">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">PPAPI Method </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;">Assumes Threads </td>
<td style="font-size: 11px; padding: 5px;">Emscripten </td>
<td style="font-size: 11px; padding: 5px;">Web API </td>
<td style="font-size: 11px; padding: 5px;">Limitations </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">MouseLockLost </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">SDL </td>
<td style="font-size: 11px; padding: 5px;">Element 'pointerlockchange', 'pointerlockerror' Events </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
</table>
<h2 id="irt">IRT</h2>
<table>
</table>
<h3>PPB_Audio</h3>
<table>
<tr bgcolor="#77ccff" style="color:white; font-weight: bold;">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">PPAPI Method </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;">Assumes Threads </td>
<td style="font-size: 11px; padding: 5px;">Emscripten </td>
<td style="font-size: 11px; padding: 5px;">Web API </td>
<td style="font-size: 11px; padding: 5px;">Limitations </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Create </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;">x </td>
<td style="font-size: 11px; padding: 5px;">SDL (partial) </td>
<td bgcolor="#ffeecc" style="font-size: 11px; padding: 5px;">GAP (partial) - AudioWorkletNode ROUGHLY equivalent</td>
<td style="font-size: 11px; padding: 5px;">The AudioWorkletSpec is done, but AudioDeviceClient may be a better fit for this API. The AudioDeviceClient is still being specified by the community. The worklet may not be the rough equivalent for this API. </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetCurrentConfig </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">SDL </td>
<td style="font-size: 11px; padding: 5px;">AudioContext.* (gets back settings passed in) </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">StartPlayback </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">SDL </td>
<td style="font-size: 11px; padding: 5px;">AudioBufferSourceNode.start </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">StopPlayback </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">SDL </td>
<td style="font-size: 11px; padding: 5px;">AudioBufferSourceNode.stop </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
</table>
<h3>PPB_AudioBuffer</h3>
<table>
<tr bgcolor="#77ccff" style="color:white; font-weight: bold;">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">PPAPI Method </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;">Assumes Threads </td>
<td style="font-size: 11px; padding: 5px;">Emscripten </td>
<td style="font-size: 11px; padding: 5px;">Web API </td>
<td style="font-size: 11px; padding: 5px;">Limitations </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetTimestamp </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">SDL </td>
<td style="font-size: 11px; padding: 5px;">AudioBufferSourceNode.start (parameter) </td>
<td style="font-size: 11px; padding: 5px;">Passed in each time instead of attached to the buffer. </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">SetTimestamp </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">SDL </td>
<td style="font-size: 11px; padding: 5px;">AudioBufferSourceNode.start (parameter) </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetSampleRate </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">SDL </td>
<td style="font-size: 11px; padding: 5px;">AudioBuffer.sampleRate </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetSampleSize </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP - WebAudio only uses 32-bit float, PPAPI does 16-bit int.</td>
<td style="font-size: 11px; padding: 5px;">PPAPI theoretically supports multiple sampling sizes. In practice, it only supports 16-bit samples. Unfortunately, developers have requested 16-bit sample sizes to save on memory use. The next version of the Web Audio spec will implement support for 16-bit samples. An optimization for AudioBuffer could be implemented similar to Firefox by using 16-bit buffer for audio that comes from decodeAudioData </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetNumberOfChannels </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">SDL </td>
<td style="font-size: 11px; padding: 5px;">AudioBuffer.numberOfChannels </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetDataBuffer </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">SDL </td>
<td style="font-size: 11px; padding: 5px;">AudioBuffer.getChannelData </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetBufferSize </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">SDL </td>
<td style="font-size: 11px; padding: 5px;">AudioBuffer.length </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
</table>
<h3>PPB_AudioConfig</h3>
<table>
<tr bgcolor="#77ccff" style="color:white; font-weight: bold;">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">PPAPI Method </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;">Assumes Threads </td>
<td style="font-size: 11px; padding: 5px;">Emscripten </td>
<td style="font-size: 11px; padding: 5px;">Web API </td>
<td style="font-size: 11px; padding: 5px;">Limitations </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">CreateStereo16Bit </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP - Only 32-bit float samples supported</td>
<td style="font-size: 11px; padding: 5px;">The next version of the Web Audio spec will implement support for 16-bit samples. </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetSampleRate </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">SDL </td>
<td style="font-size: 11px; padding: 5px;">AudioContext.sampleRate </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetSampleFrameCount </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">SDL </td>
<td style="font-size: 11px; padding: 5px;">AudioBuffer.length </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">RecommendSampleRate </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">SDL </td>
<td style="font-size: 11px; padding: 5px;">AudioContext.sampleRate (from default construct) </td>
<td style="font-size: 11px; padding: 5px;">An AudioContext will have the preferred sampling rate that matchs the actual sample rate of the hardware audio device by default. </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">RecommendSampleFrameCount </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP - Would be handled with the planned AudioDeviceClient</td>
<td style="font-size: 11px; padding: 5px;">There is an open issue to allow a user-specified size, but that is still being defined. This is probably best handled with AudioDeviceClient which can tell you what the appropriate size would be for the given hardware. </td>
</tr>
</table>
<h3>PPB_Console</h3>
<table>
<tr bgcolor="#77ccff" style="color:white; font-weight: bold;">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">PPAPI Method </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;">Assumes Threads </td>
<td style="font-size: 11px; padding: 5px;">Emscripten </td>
<td style="font-size: 11px; padding: 5px;">Web API </td>
<td style="font-size: 11px; padding: 5px;">Limitations </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Log </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">utime </td>
<td style="font-size: 11px; padding: 5px;">console.log/warn/error/... </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">LogWithSource </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td style="font-size: 11px; padding: 5px;">The Console API is regarded as a sufficiently complete replacement, unless there are specific use cases raised by developers for the functionality provided by LogWithSource. DevTools Source Maps can be used to debug transpiled JavaScript in their original source language. </td>
</tr>
</table>
<h3>PPB_Core</h3>
<table>
<tr bgcolor="#77ccff" style="color:white; font-weight: bold;">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">PPAPI Method </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;">Assumes Threads </td>
<td style="font-size: 11px; padding: 5px;">Emscripten </td>
<td style="font-size: 11px; padding: 5px;">Web API </td>
<td style="font-size: 11px; padding: 5px;">Limitations </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">getTime </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">utime </td>
<td style="font-size: 11px; padding: 5px;">new Date().getTime() </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">getTimeTicks </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">utime </td>
<td style="font-size: 11px; padding: 5px;">new Date().getTime() </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">IsMainThread </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td style="font-size: 11px; padding: 5px;">window.document !== undefined </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">CallOnMainThread </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td style="font-size: 11px; padding: 5px;">Worker.postMessage + Atomics.wait </td>
<td style="font-size: 11px; padding: 5px;">Equivalent synchronization can be built. </td>
</tr>
</table>
<h3>PPB_FileIO</h3>
<table>
<tr bgcolor="#77ccff" style="color:white; font-weight: bold;">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">PPAPI Method </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;">Assumes Threads </td>
<td style="font-size: 11px; padding: 5px;">Emscripten </td>
<td style="font-size: 11px; padding: 5px;">Web API </td>
<td style="font-size: 11px; padding: 5px;">Limitations </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Create </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">FS (partial) </td>
<td style="font-size: 11px; padding: 5px;">window.chooseFileSystemEntries() </td>
<td style="font-size: 11px; padding: 5px;">Create and open are used differently, but the pieces are of equal power. </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Open </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">FS (partial) </td>
<td style="font-size: 11px; padding: 5px;">window.chooseFileSystemEntries() </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Query </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">FS (partial) </td>
<td style="font-size: 11px; padding: 5px;">Blob.size, FileSystemHandle.getFile(), FileSystemHandle.getDirectory(), File.lastModified </td>
<td bgcolor="#ffeecc" style="font-size: 11px; padding: 5px;">GAP (partial) - Blob.type can also be used to check the MIME type. The file system type, creation time, and last access time can not be determined with the Native File System API.</td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Touch </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">FS (partial) </td>
<td style="font-size: 11px; padding: 5px;">FileSystemDirectoryHandle.getFile("name", {create: true}) </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Read </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">FS (partial) </td>
<td style="font-size: 11px; padding: 5px;">Blob.slice().arrayBuffer() </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Write </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">FS (partial) </td>
<td style="font-size: 11px; padding: 5px;">FileSystemWriter.write() </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">SetLength </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">FS (partial) </td>
<td style="font-size: 11px; padding: 5px;">FileSystemWriter.truncate() </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Flush </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffeecc" style="font-size: 11px; padding: 5px;">GAP (partial)</td>
<td bgcolor="#ffeecc" style="font-size: 11px; padding: 5px;">GAP (partial) - Files are flushed when FileSystemWrite.close() is called</td>
<td style="font-size: 11px; padding: 5px;">This is intended by design because the Native File System API files are exposed to the OS, therefore a Safe Browsing check needs to be performed before data is shown to the OS. </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Close </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">FS (partial) </td>
<td style="font-size: 11px; padding: 5px;">FileSystemWriter.close() </td>
<td style="font-size: 11px; padding: 5px;">Does not cancel pending operations, but flushes any data written so far to disk. </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">ReadToArray </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td style="font-size: 11px; padding: 5px;">Blob.slice().arrayBuffer() or Blob.arrayBuffer() </td>
<td style="font-size: 11px; padding: 5px;">Allows multiple subrange reads in parallel. </td>
</tr>
</table>
<h3>PPB_FileRef</h3>
<table>
<tr bgcolor="#77ccff" style="color:white; font-weight: bold;">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">PPAPI Method </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;">Assumes Threads </td>
<td style="font-size: 11px; padding: 5px;">Emscripten </td>
<td style="font-size: 11px; padding: 5px;">Web API </td>
<td style="font-size: 11px; padding: 5px;">Limitations </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Create </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">FS (partial) </td>
<td style="font-size: 11px; padding: 5px;">FileSystemDirectoryHandle.getFile("name", {create: true}) </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetFileSystemType </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">FS (partial) </td>
<td style="font-size: 11px; padding: 5px;">FileSystem.type </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetName </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">FS (partial) </td>
<td style="font-size: 11px; padding: 5px;">File.name </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetPath </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">FS (partial) </td>
<td bgcolor="#ffeecc" style="font-size: 11px; padding: 5px;">GAP (partial) - With the Native File System API, the relative path of a file can be determined from reference to a directory that contains the file using FileSystemHandle.resolve(FileSystemHandle)</td>
<td style="font-size: 11px; padding: 5px;">The absolute path of a file cannot be determined, and the user has to grant permission to access the directory containing the file. </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetParent </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">FS (partial) </td>
<td bgcolor="#ffeecc" style="font-size: 11px; padding: 5px;">GAP (partial) - With the Native File System API, the relative path of a file can be determined from reference to a directory that contains the file using FileSystemHandle.resolve(FileSystemHandle)</td>
<td style="font-size: 11px; padding: 5px;">The user has to grant permission to access the directory containing the file. </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">MakeDirectory </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">FS (partial) </td>
<td style="font-size: 11px; padding: 5px;">FileSystemHandle.getDirectory(..., {createIfNotExists: true}) </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Touch </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">FS (partial) </td>
<td style="font-size: 11px; padding: 5px;">FileSystemDirectoryHandle.getFile("name", {create: true}) </td>
<td style="font-size: 11px; padding: 5px;">Modify time can be bumped by writing. </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Delete </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">FS (partial) </td>
<td style="font-size: 11px; padding: 5px;">FileSystemDirectoryHandle.removeEntry() </td>
<td style="font-size: 11px; padding: 5px;">Unlike the PPAPI, directories do not have to be empty. </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Rename </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">FS (partial) </td>
<td bgcolor="#ffeecc" style="font-size: 11px; padding: 5px;">GAP (partial) - With the Native File System API, the file can be written with the new name using a combination of FileSystemFileHandle.getFile() for the new name and FileSystemFileHandle.createWriter().write() with the contents of the old file. Then FileSystemDirectoryHandle.removeEntry() to delete the old file.</td>
<td style="font-size: 11px; padding: 5px;">There is not a direct API that will do this in one step in the Native File System API. </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Query </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffeecc" style="font-size: 11px; padding: 5px;">GAP (partial)</td>
<td style="font-size: 11px; padding: 5px;">Blob.size, FileSystemHandle.getFile(), FileSystemHandle.getDirectory(), File.lastModified </td>
<td bgcolor="#ffeecc" style="font-size: 11px; padding: 5px;">GAP (partial) - Blob.type can also be used to check the MIME type. The file system type, creation time, and last access time can not be determined with the Native File System API.</td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">ReadDirectoryEntries </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">FS (partial) </td>
<td style="font-size: 11px; padding: 5px;">FileSystemDirectoryHandle.getEntries() </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
</table>
<h3>PPB_FileSystem</h3>
<table>
<tr bgcolor="#77ccff" style="color:white; font-weight: bold;">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">PPAPI Method </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;">Assumes Threads </td>
<td style="font-size: 11px; padding: 5px;">Emscripten </td>
<td style="font-size: 11px; padding: 5px;">Web API </td>
<td style="font-size: 11px; padding: 5px;">Limitations </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Create </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">FS (partial) </td>
<td style="font-size: 11px; padding: 5px;">window.requestFileSystem </td>
<td style="font-size: 11px; padding: 5px;">JS API does both in one step </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Open </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td style="font-size: 11px; padding: 5px;">window.requestFileSystem </td>
<td style="font-size: 11px; padding: 5px;">JS API does both in one step </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetType </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td style="font-size: 11px; padding: 5px;">FileSystem.type </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
</table>
<h3>PPB_Fullscreen</h3>
<table>
<tr bgcolor="#77ccff" style="color:white; font-weight: bold;">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">PPAPI Method </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;">Assumes Threads </td>
<td style="font-size: 11px; padding: 5px;">Emscripten </td>
<td style="font-size: 11px; padding: 5px;">Web API </td>
<td style="font-size: 11px; padding: 5px;">Limitations </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">IsFullScreen </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">html5.h </td>
<td style="font-size: 11px; padding: 5px;">Document.fullscreenEnabled </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">SetFullscreen </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">html5.h </td>
<td style="font-size: 11px; padding: 5px;">Document.requestFullscreen </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetScreenSize </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">html5.h </td>
<td style="font-size: 11px; padding: 5px;">Document.exitFullscreen </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
</table>
<h3>PPB_Gamepad</h3>
<table>
<tr bgcolor="#77ccff" style="color:white; font-weight: bold;">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">PPAPI Method </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;">Assumes Threads </td>
<td style="font-size: 11px; padding: 5px;">Emscripten </td>
<td style="font-size: 11px; padding: 5px;">Web API </td>
<td style="font-size: 11px; padding: 5px;">Limitations </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Sample </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">SDL </td>
<td style="font-size: 11px; padding: 5px;">Gamepad.* </td>
<td style="font-size: 11px; padding: 5px;">The Gamepad object exposes a timestamp relative to navigationStart. It is updated when data is received from the hardware https://www.w3.org/TR/gamepad/#gamepad-interface </td>
</tr>
</table>
<h3>PPB_Graphics2D</h3>
<table>
<tr bgcolor="#77ccff" style="color:white; font-weight: bold;">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">PPAPI Method </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;">Assumes Threads </td>
<td style="font-size: 11px; padding: 5px;">Emscripten </td>
<td style="font-size: 11px; padding: 5px;">Web API </td>
<td style="font-size: 11px; padding: 5px;">Limitations </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Create </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">SDL </td>
<td style="font-size: 11px; padding: 5px;">Canvas.getContext('2d') </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Describe </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">SDL </td>
<td style="font-size: 11px; padding: 5px;">Canvas.clientWidth + Canvas.clientHeight </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">PaintImageData </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">SDL </td>
<td style="font-size: 11px; padding: 5px;">CanvasRenderingContext2D.putImageData </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Scroll </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td style="font-size: 11px; padding: 5px;">CanvasRenderingContext2D.scrollIntoView, CanvasRenderingContext2D.drawImage </td>
<td bgcolor="#ffeecc" style="font-size: 11px; padding: 5px;">GAP (partial) - Can be implemented by drawing the canvas onto itself, with an offset, using drawImage, and then filling in the rest.</td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">ReplaceContents </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">SDL </td>
<td style="font-size: 11px; padding: 5px;">CanvasRenderingContext2D.drawImage </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Flush </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td style="font-size: 11px; padding: 5px;">No direct equivalent </td>
<td bgcolor="#ffeecc" style="font-size: 11px; padding: 5px;">GAP (partial) -
There is always an implicit flush at the end of draw code; this is unlikely
to change. However, the combination of
<a href="https://html.spec.whatwg.org/multipage/canvas.html#the-offscreencanvas-interface">
OffscreenCanvas
</a> and
<a href="https://html.spec.whatwg.org/multipage/canvas.html#the-imagebitmap-rendering-context">
ImageBitmapRenderingContext
</a>provide similar functionality.</td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">SetScale </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">SDL </td>
<td style="font-size: 11px; padding: 5px;">CanvasRenderingContext2D.scale </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetScale </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">SDL </td>
<td style="font-size: 11px; padding: 5px;">CanvasRenderingContext2D.currentTransform </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">SetLayerTransform </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">SDL </td>
<td style="font-size: 11px; padding: 5px;">CanvasRenderingContext2D.setTransform
CanvasRenderingContext2D.scale
CanvasRenderingContext2D.translate </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
</table>
<h3>PPB_Graphics3D</h3>
<table>
<tr bgcolor="#77ccff" style="color:white; font-weight: bold;">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">PPAPI Method </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;">Assumes Threads </td>
<td style="font-size: 11px; padding: 5px;">Emscripten </td>
<td style="font-size: 11px; padding: 5px;">Web API </td>
<td style="font-size: 11px; padding: 5px;">Limitations </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetAttribMaxValue </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">OpenGL ES 3.0 </td>
<td style="font-size: 11px; padding: 5px;">WebGL 2.0 </td>
<td bgcolor="#ffeecc" style="font-size: 11px; padding: 5px;">GAP (partial) - WebGL 2.0 and Emscripten's exposure of OpenGL ES 3.0 support user-defined multisampled framebuffers, in which all of the parameters configurable via PPAPI can be set.</td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Create </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">SDL </td>
<td style="font-size: 11px; padding: 5px;">Canvas.getContext </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetAttribs </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">SDL </td>
<td style="font-size: 11px; padding: 5px;">WebGLRenderingContext.getContextAttributes </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">SetAttribs </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">SDL </td>
<td style="font-size: 11px; padding: 5px;">Canvas.getContext(.., OPTIONS) </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetError </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">SDL </td>
<td style="font-size: 11px; padding: 5px;">WebGLRenderingContext.getError </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">ResizeBuffers </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">SDL </td>
<td style="font-size: 11px; padding: 5px;">Canvas.width = w; Canvas.height = h; </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">SwapBuffers </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td style="font-size: 11px; padding: 5px;">No direct equivalent </td>
<td bgcolor="#ffeecc" style="font-size: 11px; padding: 5px;">GAP (partial) -
There is always an implicit flush at the end of draw code; this is unlikely
to change. However, the combination of
<a href="https://html.spec.whatwg.org/multipage/canvas.html#the-offscreencanvas-interface">
OffscreenCanvas
</a> and
<a href="https://html.spec.whatwg.org/multipage/canvas.html#the-imagebitmap-rendering-context">
ImageBitmapRenderingContext
</a> provide similar functionality.</td>
</tr>
</table>
<h3>PPB_ImageData</h3>
<table>
<tr bgcolor="#77ccff" style="color:white; font-weight: bold;">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">PPAPI Method </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;">Assumes Threads </td>
<td style="font-size: 11px; padding: 5px;">Emscripten </td>
<td style="font-size: 11px; padding: 5px;">Web API </td>
<td style="font-size: 11px; padding: 5px;">Limitations </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetNativeImageDataFormat </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">SDL </td>
<td style="font-size: 11px; padding: 5px;">ImageData mandates RGBA order </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">IsImageDataFormatSupported </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">SDL </td>
<td style="font-size: 11px; padding: 5px;">ImageData mandates RGBA order </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Create </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">SDL </td>
<td style="font-size: 11px; padding: 5px;">CanvasRenderingContext2d.createImageData </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Describe </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">SDL </td>
<td style="font-size: 11px; padding: 5px;">ImageData never has a stride </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Map </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">SDL </td>
<td style="font-size: 11px; padding: 5px;">ImageData.data </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Unmap </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">SDL </td>
<td style="font-size: 11px; padding: 5px;">ImageData.data </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
</table>
<h3>PPB_InputEvent</h3>
<table>
<tr bgcolor="#77ccff" style="color:white; font-weight: bold;">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">PPAPI Method </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;">Assumes Threads </td>
<td style="font-size: 11px; padding: 5px;">Emscripten </td>
<td style="font-size: 11px; padding: 5px;">Web API </td>
<td style="font-size: 11px; padding: 5px;">Limitations </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">RequestInputEvents </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">SDL </td>
<td style="font-size: 11px; padding: 5px;">No direct equivalent </td>
<td style="font-size: 11px; padding: 5px;">The lack of this feature is probably less relevant as JS / Wasm runs on the main thread and can more cheaply filter events without incurring a cross process round-trip. </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">RequestFilteringInputEvents </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">SDL </td>
<td style="font-size: 11px; padding: 5px;">mouse* key* wheel* touch* composition* Events </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;"> </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">SDL </td>
<td style="font-size: 11px; padding: 5px;">Element.addEventListener </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">ClearInputEventRequest </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">SDL </td>
<td style="font-size: 11px; padding: 5px;">Element.removeEventListener </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetType </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">SDL </td>
<td style="font-size: 11px; padding: 5px;">Event class descendants </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetTimeStamp </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">SDL </td>
<td style="font-size: 11px; padding: 5px;">Event.timeStamp </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetModifiers </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">SDL </td>
<td style="font-size: 11px; padding: 5px;">*Event.altKey/shiftKey/metaKey/ctrlKey </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
</table>
<h3>PPB_MouseInputEvent</h3>
<table>
<tr bgcolor="#77ccff" style="color:white; font-weight: bold;">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">PPAPI Method </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;">Assumes Threads </td>
<td style="font-size: 11px; padding: 5px;">Emscripten </td>
<td style="font-size: 11px; padding: 5px;">Web API </td>
<td style="font-size: 11px; padding: 5px;">Limitations </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Create </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">SDL </td>
<td style="font-size: 11px; padding: 5px;">MouseEvent </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetButton </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">SDL </td>
<td style="font-size: 11px; padding: 5px;">MouseEvent.button </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetPosition </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">SDL </td>
<td style="font-size: 11px; padding: 5px;">MouseEvent.client*/page*/offset* </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetClickCount </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">SDL </td>
<td style="font-size: 11px; padding: 5px;">dblclick' vs 'mousedown' Events </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetMovement </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">SDL </td>
<td style="font-size: 11px; padding: 5px;">MouseEvent.movement* </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
</table>
<h3>PPB_WheelInputEvent</h3>
<table>
<tr bgcolor="#77ccff" style="color:white; font-weight: bold;">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">PPAPI Method </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;">Assumes Threads </td>
<td style="font-size: 11px; padding: 5px;">Emscripten </td>
<td style="font-size: 11px; padding: 5px;">Web API </td>
<td style="font-size: 11px; padding: 5px;">Limitations </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Create </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">SDL </td>
<td style="font-size: 11px; padding: 5px;">WheelEvent </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetDelta </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">SDL </td>
<td style="font-size: 11px; padding: 5px;">WheelEvent.delta* </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetTicks </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP - deltaMode kind of contains this info, but incompletely.</td>
<td style="font-size: 11px; padding: 5px;">There is discussion on implementing a WheelEvent.deltaMode API: https://github.com/w3c/uievents/issues/181#issuecomment-537811017 </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetScrollByPage </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP - deltaMode kind of contains this info, but incompletely.</td>
<td style="font-size: 11px; padding: 5px;">There is discussion on implementing a WheelEvent.deltaMode API: https://github.com/w3c/uievents/issues/181#issuecomment-537811017 </td>
</tr>
</table>
<h3>PPB_KeyboardInputEvent</h3>
<table>
<tr bgcolor="#77ccff" style="color:white; font-weight: bold;">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">PPAPI Method </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;">Assumes Threads </td>
<td style="font-size: 11px; padding: 5px;">Emscripten </td>
<td style="font-size: 11px; padding: 5px;">Web API </td>
<td style="font-size: 11px; padding: 5px;">Limitations </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Create </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">SDL </td>
<td style="font-size: 11px; padding: 5px;">KeyboardEvent </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetKeyCode </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">SDL </td>
<td style="font-size: 11px; padding: 5px;">KeyboardEvent.keyCode </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetCharacterText </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">SDL </td>
<td style="font-size: 11px; padding: 5px;">KeyboardEvent.key </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetCode </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">SDL </td>
<td style="font-size: 11px; padding: 5px;">KeyboardEvent.code </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
</table>
<h3>PPB_TouchInputEvent</h3>
<table>
<tr bgcolor="#77ccff" style="color:white; font-weight: bold;">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">PPAPI Method </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;">Assumes Threads </td>
<td style="font-size: 11px; padding: 5px;">Emscripten </td>
<td style="font-size: 11px; padding: 5px;">Web API </td>
<td style="font-size: 11px; padding: 5px;">Limitations </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Create </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">SDL </td>
<td style="font-size: 11px; padding: 5px;">TouchEvent </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">AddTouchPoint </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">SDL </td>
<td style="font-size: 11px; padding: 5px;">TouchEvent.touches.push </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetTouchCount </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">SDL </td>
<td style="font-size: 11px; padding: 5px;">TouchEvent.touches.length </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetTouchByIndex </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">SDL </td>
<td style="font-size: 11px; padding: 5px;">TouchEvent.touches[i] </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetTouchById </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">SDL </td>
<td style="font-size: 11px; padding: 5px;">Touch.indentifer (to figure this out yourself) </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
</table>
<h3>PPB_IMEInputEvent</h3>
<table>
<tr bgcolor="#77ccff" style="color:white; font-weight: bold;">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">PPAPI Method </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;">Assumes Threads </td>
<td style="font-size: 11px; padding: 5px;">Emscripten </td>
<td style="font-size: 11px; padding: 5px;">Web API </td>
<td style="font-size: 11px; padding: 5px;">Limitations </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Create </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td style="font-size: 11px; padding: 5px;">CompositionEvent </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetText </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td style="font-size: 11px; padding: 5px;">CompositionEvent.data </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetSegmentNumber </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP - No direct equivalent</td>
<td style="font-size: 11px; padding: 5px;">This data can potentially be retrieved from CompositionEvent.data. </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetSegmentOffset </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP - No direct equivalent</td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetTargetSegment </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP - No direct equivalent</td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetSelection </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP - No direct equivalent</td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
</table>
<h3>PPB_Instance</h3>
<table>
<tr bgcolor="#77ccff" style="color:white; font-weight: bold;">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">PPAPI Method </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;">Assumes Threads </td>
<td style="font-size: 11px; padding: 5px;">Emscripten </td>
<td style="font-size: 11px; padding: 5px;">Web API </td>
<td style="font-size: 11px; padding: 5px;">Limitations </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">BindGraphics </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">SDL </td>
<td style="font-size: 11px; padding: 5px;">Canvas.getContext (moot as binding is automatic). </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">IsFullFrame </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP - No equivalent to mime type handlers.</td>
<td style="font-size: 11px; padding: 5px;">NaCl apps can be registered to handle a particular mime type and own the whole document. </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">DidCreate </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">N/A </td>
<td style="font-size: 11px; padding: 5px;"><Element>[key] </td>
<td style="font-size: 11px; padding: 5px;">General DOM access lets you fish out tag attributes </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">DidDestroy </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">N/A </td>
<td style="font-size: 11px; padding: 5px;">N/A </td>
<td style="font-size: 11px; padding: 5px;">Not triggered for NaCl </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">DidChangeView </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">N/A </td>
<td style="font-size: 11px; padding: 5px;">Element 'resize' Event </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">DidChangeFocus </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">N/A </td>
<td style="font-size: 11px; padding: 5px;">Element 'focus', 'focusin', 'focusout' Events </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">HandleDocumentLoad </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">N/A </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP - No way to register as a mime type handler</td>
<td style="font-size: 11px; padding: 5px;">NaCl modules via apps + a manifest entry can be set up to handle particular mime types. </td>
</tr>
</table>
<h3>PPB_MediaStreamAudioTrack</h3>
<table>
<tr bgcolor="#77ccff" style="color:white; font-weight: bold;">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">PPAPI Method </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;">Assumes Threads </td>
<td style="font-size: 11px; padding: 5px;">Emscripten </td>
<td style="font-size: 11px; padding: 5px;">Web API </td>
<td style="font-size: 11px; padding: 5px;">Limitations </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Configure </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td style="font-size: 11px; padding: 5px;">getUserMedia() </td>
<td style="font-size: 11px; padding: 5px;">The constraints from getUserMedia() can provide the configuration values to use in MediaStreamTrack. </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetAttrib </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td style="font-size: 11px; padding: 5px;">MediaStreamTrack.getSettings() </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetId </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td style="font-size: 11px; padding: 5px;">MediaStreamTrack.id </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">HasEnded </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td style="font-size: 11px; padding: 5px;">MediaStreamTrack.readyState </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetBuffer </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP - No equivalent</td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">RecycleBuffer </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP - No equivalent</td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Close </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td style="font-size: 11px; padding: 5px;">MediaStreamTrack.stop() </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
</table>
<h3>PPB_MediaStreamVideoTrack</h3>
<table>
<tr bgcolor="#77ccff" style="color:white; font-weight: bold;">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">PPAPI Method </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;">Assumes Threads </td>
<td style="font-size: 11px; padding: 5px;">Emscripten </td>
<td style="font-size: 11px; padding: 5px;">Web API </td>
<td style="font-size: 11px; padding: 5px;">Limitations </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Create </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td style="font-size: 11px; padding: 5px;">Canvas Capture </td>
<td style="font-size: 11px; padding: 5px;">Canvas Capture provides the ability to introduce video frames programatically. </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Configure </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td style="font-size: 11px; padding: 5px;">applyConstraints(), getUserMedia() </td>
<td bgcolor="#ffeecc" style="font-size: 11px; padding: 5px;">GAP (partial) - The extent of configurations available in the Web API may differ from the PPAPI.</td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetAttrib </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td style="font-size: 11px; padding: 5px;">MediaStreamSettings.width </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;"> </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td style="font-size: 11px; padding: 5px;">MediaStreamSettings.height </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;"> </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP - no equivalent to PP_MEDIASTREAMVIDEOTRACK_ATTRIB_BUFFERED_FRAMES</td>
<td style="font-size: 11px; padding: 5px;">MediaStream cannot be preloaded, so it will never buffer: https://www.w3.org/TR/mediacapture-streams/#mediastreams-in-media-elements </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;"> </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP - no equivalent to PP_MEDIASTREAMVIDEOTRACK_ATTRIB_FORMAT</td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetId </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td style="font-size: 11px; padding: 5px;">MediaStreamTrack.id </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">HasEnded </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td style="font-size: 11px; padding: 5px;">MediaStreamTrack.readyState </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetFrame </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP - No equivalent</td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">RecycleFrame </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP - No equivalent</td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Close </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td style="font-size: 11px; padding: 5px;">MediaStreamTrack.stop() </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetEmptyFrame </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP - No equivalent</td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">PutFrame </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP - No equivalent</td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
</table>
<h3>PPB_MessageLoop</h3>
<table>
<tr bgcolor="#77ccff" style="color:white; font-weight: bold;">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">PPAPI Method </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;">Assumes Threads </td>
<td style="font-size: 11px; padding: 5px;">Emscripten </td>
<td style="font-size: 11px; padding: 5px;">Web API </td>
<td style="font-size: 11px; padding: 5px;">Limitations </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Create </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">N/A </td>
<td style="font-size: 11px; padding: 5px;">Mostly moot, workers get an implicit event loop. </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetForMainThread </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">N/A </td>
<td style="font-size: 11px; padding: 5px;">Mostly moot, workers get an implicit event loop. </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetCurrent </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">N/A </td>
<td style="font-size: 11px; padding: 5px;">Mostly moot, workers get an implicit event loop. </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">AttachToCurrentThread </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">N/A </td>
<td style="font-size: 11px; padding: 5px;">Mostly moot, workers get an implicit event loop. </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Run </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">N/A </td>
<td style="font-size: 11px; padding: 5px;">Mostly moot, workers get an implicit event loop. </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">PostWork </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">N/A </td>
<td style="font-size: 11px; padding: 5px;">Mostly moot, workers get an implicit event loop. </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">PostQuit </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">N/A </td>
<td style="font-size: 11px; padding: 5px;">Mostly moot, workers get an implicit event loop. </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
</table>
<h3>PPB_Messaging</h3>
<table>
<tr bgcolor="#77ccff" style="color:white; font-weight: bold;">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">PPAPI Method </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;">Assumes Threads </td>
<td style="font-size: 11px; padding: 5px;">Emscripten </td>
<td style="font-size: 11px; padding: 5px;">Web API </td>
<td style="font-size: 11px; padding: 5px;">Limitations </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">PostMessage </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">N/A </td>
<td style="font-size: 11px; padding: 5px;">Window.postMessage </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">RegisterMessageHandler </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">N/A </td>
<td style="font-size: 11px; padding: 5px;">Window.addEventListener </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">UnregisterMessageHandler </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">N/A </td>
<td style="font-size: 11px; padding: 5px;">Window.removeEventListener </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
</table>
<h3>PPB_MouseCursor</h3>
<table>
<tr bgcolor="#77ccff" style="color:white; font-weight: bold;">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">PPAPI Method </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;">Assumes Threads </td>
<td style="font-size: 11px; padding: 5px;">Emscripten </td>
<td style="font-size: 11px; padding: 5px;">Web API </td>
<td style="font-size: 11px; padding: 5px;">Limitations </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">SetCursor </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">SDL </td>
<td style="font-size: 11px; padding: 5px;">Element.style.cursor </td>
<td style="font-size: 11px; padding: 5px;">Same set of stock cursors are supported.
Custom cursors can be done with url(..).
Dynamic custom cursors can be done with data URIs.
CSS3 supports specifying the hotspot. </td>
</tr>
</table>
<h3>PPB_MouseLock</h3>
<table>
<tr bgcolor="#77ccff" style="color:white; font-weight: bold;">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">PPAPI Method </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;">Assumes Threads </td>
<td style="font-size: 11px; padding: 5px;">Emscripten </td>
<td style="font-size: 11px; padding: 5px;">Web API </td>
<td style="font-size: 11px; padding: 5px;">Limitations </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">LockMouse </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">SDL </td>
<td style="font-size: 11px; padding: 5px;">Element.requestPointerLock </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">UnlockMouse </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">SDL </td>
<td style="font-size: 11px; padding: 5px;">Element.exitPointerLock </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
</table>
<h3>PPB_OpenGLES2</h3>
<table>
<tr bgcolor="#77ccff" style="color:white; font-weight: bold;">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">PPAPI Method </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;">Assumes Threads </td>
<td style="font-size: 11px; padding: 5px;">Emscripten </td>
<td style="font-size: 11px; padding: 5px;">Web API </td>
<td style="font-size: 11px; padding: 5px;">Limitations </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Several Methods </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">OpenGLES </td>
<td style="font-size: 11px; padding: 5px;">Close to WebGL 1.0 in functionality. </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;"> </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;">x </td>
<td style="font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">OffscreenCanvas </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
</table>
<h3>PPB_TextInputController</h3>
<table>
<tr bgcolor="#77ccff" style="color:white; font-weight: bold;">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">PPAPI Method </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;">Assumes Threads </td>
<td style="font-size: 11px; padding: 5px;">Emscripten </td>
<td style="font-size: 11px; padding: 5px;">Web API </td>
<td style="font-size: 11px; padding: 5px;">Limitations </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">SetTextInputType </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP - Potentially filled by Input Method Editor API</td>
<td style="font-size: 11px; padding: 5px;">Some developers would like to either be able to hint in this fashion, or preferrably the ability to intercept and display IME events / output inline inside a canvas. </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">UpdateCaretPosition </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP - Potentially filled by Input Method Editor API</td>
<td style="font-size: 11px; padding: 5px;">https://www.w3.org/TR/ime-api/ </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">CancelCompositionText </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP - Potentially filled by Input Method Editor API</td>
<td style="font-size: 11px; padding: 5px;">https://www.w3.org/TR/ime-api/ </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">UpdateSurroundingText </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP - Potentially filled by Input Method Editor API</td>
<td style="font-size: 11px; padding: 5px;">https://www.w3.org/TR/ime-api/ </td>
</tr>
</table>
<h3>PPB_URLLoader</h3>
<table>
<tr bgcolor="#77ccff" style="color:white; font-weight: bold;">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">PPAPI Method </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;">Assumes Threads </td>
<td style="font-size: 11px; padding: 5px;">Emscripten </td>
<td style="font-size: 11px; padding: 5px;">Web API </td>
<td style="font-size: 11px; padding: 5px;">Limitations </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Create </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">embind </td>
<td style="font-size: 11px; padding: 5px;">new XMLHttpRequest(); </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Open </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">embind </td>
<td style="font-size: 11px; padding: 5px;">XMLHttpRequest.open </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">FollowRedirect </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">embind </td>
<td style="font-size: 11px; padding: 5px;">Request.redirect </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;"> </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP - No XMLHTTPRequest equivalent</td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetUploadProgress </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">embind </td>
<td style="font-size: 11px; padding: 5px;">XMLHttpRequest 'progress' Event </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;"> </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td style="font-size: 11px; padding: 5px;">FetchObserver </td>
<td style="font-size: 11px; padding: 5px;">Not specced or implemented yet; https://github.com/whatwg/fetch/issues/607 </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetDownloadProgress </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">embind </td>
<td style="font-size: 11px; padding: 5px;">XMLHttpRequest 'progress' Event </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;"> </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td style="font-size: 11px; padding: 5px;">FetchObserver </td>
<td style="font-size: 11px; padding: 5px;">Not specced or implemented yet; https://github.com/whatwg/fetch/issues/607 </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetResponseInfo </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">embind </td>
<td style="font-size: 11px; padding: 5px;">XMLHttpRequest.getAllResponseHeaders </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;"> </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">embind </td>
<td style="font-size: 11px; padding: 5px;">Fetch Response.* </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">ReadResponseBody </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">embind </td>
<td style="font-size: 11px; padding: 5px;">XMLHttpRequest.response </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;"> </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">embind </td>
<td style="font-size: 11px; padding: 5px;">Body.* (Response is a Body) </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">FinishStreamingToFile </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">embind </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP - No direct equivalent</td>
<td style="font-size: 11px; padding: 5px;">XMLHttpRequest and Fetch both assume streaming to memory, rather than directly to a storage. </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Close </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">embind </td>
<td style="font-size: 11px; padding: 5px;">XMLHttpRequest.abort </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;"> </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td style="font-size: 11px; padding: 5px;">Fetch API: AbortSignal and AbortController </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
</table>
<h3>PPB_URLRequestInfo</h3>
<table>
<tr bgcolor="#77ccff" style="color:white; font-weight: bold;">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">PPAPI Method </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;">Assumes Threads </td>
<td style="font-size: 11px; padding: 5px;">Emscripten </td>
<td style="font-size: 11px; padding: 5px;">Web API </td>
<td style="font-size: 11px; padding: 5px;">Limitations </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Create </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">embind </td>
<td style="font-size: 11px; padding: 5px;">XMLHttpRequest </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;"> </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">embind </td>
<td style="font-size: 11px; padding: 5px;">Fetch Request </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">SetProperty </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP - No direct equivalent for XMLHttpRequest</td>
<td style="font-size: 11px; padding: 5px;">XMLHttpRequest doesn't provide direct ways to per-request limit following redirects, stream to a file, set referrer or credentials policy. </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;"> </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">embind </td>
<td style="font-size: 11px; padding: 5px;">Request.* </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">AppendDataToBody </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">embind </td>
<td style="font-size: 11px; padding: 5px;">XMLHttpRequest.send </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP - Both must have the whole body, rather than a chunk.</td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;"> </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">embind </td>
<td style="font-size: 11px; padding: 5px;">fetch(.., options:body) </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">AppendFileToBody </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td style="font-size: 11px; padding: 5px;">fetch() upload streaming </td>
<td style="font-size: 11px; padding: 5px;">https://www.chromestatus.com/feature/5274139738767360 </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;"> </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">N/A </td>
<td style="font-size: 11px; padding: 5px;"><form> </td>
<td style="font-size: 11px; padding: 5px;">You can also read with FileReader and upload, but that's more like AppendDataToBody </td>
</tr>
</table>
<h3>PPB_URLResponseInfo</h3>
<table>
<tr bgcolor="#77ccff" style="color:white; font-weight: bold;">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">PPAPI Method </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;">Assumes Threads </td>
<td style="font-size: 11px; padding: 5px;">Emscripten </td>
<td style="font-size: 11px; padding: 5px;">Web API </td>
<td style="font-size: 11px; padding: 5px;">Limitations </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetProperty </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">embind </td>
<td style="font-size: 11px; padding: 5px;">XMLHttpRequest.getAllResponseHeaders + others </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;"> </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">embind </td>
<td style="font-size: 11px; padding: 5px;">Fetch Response.* </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetBodyAsFileRef </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">embind </td>
<td style="font-size: 11px; padding: 5px;">Fetch Response (Body) .blob() </td>
<td style="font-size: 11px; padding: 5px;">Assumes storage layer optimizes transfer. </td>
</tr>
</table>
<h3>PPB_Var</h3>
<table>
<tr bgcolor="#77ccff" style="color:white; font-weight: bold;">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">PPAPI Method </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;">Assumes Threads </td>
<td style="font-size: 11px; padding: 5px;">Emscripten </td>
<td style="font-size: 11px; padding: 5px;">Web API </td>
<td style="font-size: 11px; padding: 5px;">Limitations </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">VarFromUtf8 </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">embind </td>
<td style="font-size: 11px; padding: 5px;">TextDecoder.decode </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">VarToUtf8 </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">embind </td>
<td style="font-size: 11px; padding: 5px;">TextEncoder.encode </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">VarFromResource </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">N/A </td>
<td style="font-size: 11px; padding: 5px;">N/A </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">VarToResource </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">N/A </td>
<td style="font-size: 11px; padding: 5px;">N/A </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
</table>
<h3>PPB_VarArray</h3>
<table>
<tr bgcolor="#77ccff" style="color:white; font-weight: bold;">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">PPAPI Method </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;">Assumes Threads </td>
<td style="font-size: 11px; padding: 5px;">Emscripten </td>
<td style="font-size: 11px; padding: 5px;">Web API </td>
<td style="font-size: 11px; padding: 5px;">Limitations </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Get </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">embind </td>
<td style="font-size: 11px; padding: 5px;">Array[i] </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Set </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">embind </td>
<td style="font-size: 11px; padding: 5px;">Array[i] = x </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetLength </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">embind </td>
<td style="font-size: 11px; padding: 5px;">Array.length </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">SetLength </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">embind </td>
<td style="font-size: 11px; padding: 5px;">Array.length = n </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
</table>
<h3>PPB_VarArrayBuffer</h3>
<table>
<tr bgcolor="#77ccff" style="color:white; font-weight: bold;">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">PPAPI Method </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;">Assumes Threads </td>
<td style="font-size: 11px; padding: 5px;">Emscripten </td>
<td style="font-size: 11px; padding: 5px;">Web API </td>
<td style="font-size: 11px; padding: 5px;">Limitations </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Create </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">embind </td>
<td style="font-size: 11px; padding: 5px;">new ArrayBuffer(n) </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">ByteLength </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">embind </td>
<td style="font-size: 11px; padding: 5px;">ArrayBuffer.byteLength </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Map </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP - No direct equivalent</td>
<td style="font-size: 11px; padding: 5px;">Asm.js / Wasm modules are unable to map regions of an ArrayBuffer other than their single linear memory heap.
Future multiple memories or memory mapping might improve this. </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Unmap </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP - No direct equivalent</td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
</table>
<h3>PPB_VarDictionary</h3>
<table>
<tr bgcolor="#77ccff" style="color:white; font-weight: bold;">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">PPAPI Method </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;">Assumes Threads </td>
<td style="font-size: 11px; padding: 5px;">Emscripten </td>
<td style="font-size: 11px; padding: 5px;">Web API </td>
<td style="font-size: 11px; padding: 5px;">Limitations </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Create </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">embind </td>
<td style="font-size: 11px; padding: 5px;">{} </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Get </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">embind </td>
<td style="font-size: 11px; padding: 5px;"><Object>[i] </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Set </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">embind </td>
<td style="font-size: 11px; padding: 5px;"><Object>[i] = x </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Delete </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">embind </td>
<td style="font-size: 11px; padding: 5px;">delete <Object>[i] </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">HasKey </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">embind </td>
<td style="font-size: 11px; padding: 5px;">x in <Object> </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetKeys </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">embind </td>
<td style="font-size: 11px; padding: 5px;">for (k in <Object>) {} </td>
<td style="font-size: 11px; padding: 5px;">No literal equivalent, but it can be built. </td>
</tr>
</table>
<h3>PPB_VideoDecoder</h3>
<table>
<tr bgcolor="#77ccff" style="color:white; font-weight: bold;">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">PPAPI Method </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;">Assumes Threads </td>
<td style="font-size: 11px; padding: 5px;">Emscripten </td>
<td style="font-size: 11px; padding: 5px;">Web API </td>
<td style="font-size: 11px; padding: 5px;">Limitations </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Create </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP - Would be handled with the proposed WebCodecs API using VideoDecoder()</td>
<td style="font-size: 11px; padding: 5px;">https://github.com/WICG/web-codecs/blob/master/explainer.md#example-of-decode-for-low-latency-live-streaming-or-cloud-gaming </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Initialize </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP - Would be handled with the proposed WebCodecs API using VideoDecoder() initialization parameters (VideoDecoderInitParameters)</td>
<td style="font-size: 11px; padding: 5px;">https://github.com/WICG/web-codecs/blob/master/explainer.md#example-of-decode-for-low-latency-live-streaming-or-cloud-gaming </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Decode </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP - Would be handled with the proposed WebCodecs API using ReadableStream.pipeThrough(VideoDecoder)</td>
<td style="font-size: 11px; padding: 5px;">https://github.com/WICG/web-codecs/blob/master/explainer.md#example-of-decode-for-low-latency-live-streaming-or-cloud-gaming </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetPicture </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP - Would be handled with the proposed WebCodecs API using ReadableStream.pipeThrough(VideoDecoder).pipeTo(VideoTrackWriter().writable)</td>
<td style="font-size: 11px; padding: 5px;">https://github.com/WICG/web-codecs/blob/master/explainer.md#example-of-decode-for-low-latency-live-streaming-or-cloud-gaming </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">RecyclePicture </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP - Would be handled with the proposed WebCodecs API. The current design will automatically recycle the pictures and keep the decoding process going.</td>
<td style="font-size: 11px; padding: 5px;">https://github.com/WICG/web-codecs/blob/master/explainer.md#example-of-decode-for-low-latency-live-streaming-or-cloud-gaming </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Flush </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP - Would be handled with the proposed WebCodecs API. The API will be called Flush(), however there is still discussion on how it will be sequenced in relation to decode calls.</td>
<td style="font-size: 11px; padding: 5px;">https://github.com/WICG/web-codecs/blob/master/explainer.md#example-of-decode-for-low-latency-live-streaming-or-cloud-gaming </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Reset </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP - Would be handled with the proposed WebCodecs API by destroying the VideoDecoder instance and creating a new one. This won't be as efficient as a dedicated reset method, but the semantics for a Reset() API is still being discussed.</td>
<td style="font-size: 11px; padding: 5px;">https://github.com/WICG/web-codecs/blob/master/explainer.md#example-of-decode-for-low-latency-live-streaming-or-cloud-gaming </td>
</tr>
</table>
<h3>PPB_VideoEncoder</h3>
<table>
<tr bgcolor="#77ccff" style="color:white; font-weight: bold;">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">PPAPI Method </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;">Assumes Threads </td>
<td style="font-size: 11px; padding: 5px;">Emscripten </td>
<td style="font-size: 11px; padding: 5px;">Web API </td>
<td style="font-size: 11px; padding: 5px;">Limitations </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Create </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP - Would be handled with the proposed WebCodecs API using VideoEncoder()</td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetSupportedProfiles </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td bgcolor="#ffeecc" style="font-size: 11px; padding: 5px;">GAP (partial) - navigator.mediaCapabilities.encodingInfo()</td>
<td style="font-size: 11px; padding: 5px;">The supported profiles have to be checked one by one. </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Initialize </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP - Would be handled with the proposed WebCodecs API using VideoEncoder() initialization parameters</td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetFramesRequired </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP - No equivalent</td>
<td style="font-size: 11px; padding: 5px;">It is unlikely that the frame pool used internally by the Web Codecs API is exposed. </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetFrameCodedSize </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP - No equivalent</td>
<td style="font-size: 11px; padding: 5px;">It is unlikely that the frame pool used internally by the Web Codecs API is exposed. </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetVideoFrame </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP - Would be handled with the proposed WebCodecs API by using ReadableStream.pipeThrough(VideoEncoder). This would directly encode the data in the Readable stream instead of grabbing a single frame to fill with data before encoding.</td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Encode </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP - Would be handled with the proposed WebCodecs API using ReadableStream.pipeThrough(VideoEncoder)</td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetBitstreamBuffer </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP - Would be handled with the proposed WebCodecs API. The current design will automatically go through the encoded bitstream buffer that is piped through.</td>
<td style="font-size: 11px; padding: 5px;">The WebCodecs API currently assumes that bitstream buffer can be copied rather than pooled, so it will not need to be recycled. </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">RecycleBitstreamBuffer </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP - Would be handled with the proposed WebCodecs API. The current design will automatically recycle the buffer to keep the encoding process going.</td>
<td style="font-size: 11px; padding: 5px;">This is unlikely to change in the future as performance implications are smaller. </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">RequestEncodingParametersChange </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP - Would be handled by the proposed Web Codecs API. Certain parameters will have the capability of being changed on the fly, while others will require the encoder to be torn down.</td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Close </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP - Would be handled with the proposed WebCodecs API by using VideoEncoder.Close()</td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
</table>
<h3>PPB_VideoFrame</h3>
<table>
<tr bgcolor="#77ccff" style="color:white; font-weight: bold;">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">PPAPI Method </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;">Assumes Threads </td>
<td style="font-size: 11px; padding: 5px;">Emscripten </td>
<td style="font-size: 11px; padding: 5px;">Web API </td>
<td style="font-size: 11px; padding: 5px;">Limitations </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetTimestamp </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP - Would be handled with the proposed WebCodecs API.</td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">SetTimestamp </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP - Would be handled with the proposed WebCodecs API.</td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetFormat </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP - Would be handled with the proposed WebCodecs API.</td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetSize </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP - Would be handled with the proposed WebCodecs API.</td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetDataBuffer </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP - Would be handled with the proposed WebCodecs API.</td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetDataBufferSize </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP - Would be handled with the proposed WebCodecs API.</td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
</table>
<h3>PPB_View</h3>
<table>
<tr bgcolor="#77ccff" style="color:white; font-weight: bold;">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">PPAPI Method </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;">Assumes Threads </td>
<td style="font-size: 11px; padding: 5px;">Emscripten </td>
<td style="font-size: 11px; padding: 5px;">Web API </td>
<td style="font-size: 11px; padding: 5px;">Limitations </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetRect </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">embind </td>
<td style="font-size: 11px; padding: 5px;">Element.getBoundingClientRect </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">IsFullscreen </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">embind </td>
<td style="font-size: 11px; padding: 5px;">Document.fullScreenEnabled </td>
<td style="font-size: 11px; padding: 5px;">Pertains to document instead of just single element. </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">IsVisible </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">embind </td>
<td style="font-size: 11px; padding: 5px;">IntersectionObserver </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">IsPageVisible </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">embind </td>
<td style="font-size: 11px; padding: 5px;">document.visibilityState </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetClipRect </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">embind </td>
<td style="font-size: 11px; padding: 5px;">IntersectionObserver </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetDeviceScale </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">embind </td>
<td style="font-size: 11px; padding: 5px;">window.devicePixelRatio </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetCSSScale </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">embind </td>
<td style="font-size: 11px; padding: 5px;"><Element>.getBoundingClientRect().width / <Element>.offsetWidth </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetScrollOffset </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">embind </td>
<td style="font-size: 11px; padding: 5px;"><Element>.scrollTop / <Element>.scrollLeft </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
</table>
<h3>PPB_WebSocket</h3>
<table>
<tr bgcolor="#77ccff" style="color:white; font-weight: bold;">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">PPAPI Method </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;">Assumes Threads </td>
<td style="font-size: 11px; padding: 5px;">Emscripten </td>
<td style="font-size: 11px; padding: 5px;">Web API </td>
<td style="font-size: 11px; padding: 5px;">Limitations </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Create </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td style="font-size: 11px; padding: 5px;">WebSocket.WebSocket </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Connect </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td style="font-size: 11px; padding: 5px;">WebSocket.WebSocket(url, ...)
WebSocket 'open' Event </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Close </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td style="font-size: 11px; padding: 5px;">WebSocket.close </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">ReceiveMessage </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td style="font-size: 11px; padding: 5px;">WebSocket 'message' Event
WebSocket 'error' Event
WebSocket 'close' Event </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">SendMessage </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td style="font-size: 11px; padding: 5px;">WebSocket.send </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetBufferedAmount </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td style="font-size: 11px; padding: 5px;">WebSocket.bufferedAmount </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetCloseCode </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td style="font-size: 11px; padding: 5px;">CloseEvent.code </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetCloseReason </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td style="font-size: 11px; padding: 5px;">CloseEvent.reason </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetCloseWasClean </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td style="font-size: 11px; padding: 5px;">CloseEvent.wasClean </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetExtensions </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td style="font-size: 11px; padding: 5px;">WebSocket.extensions </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetProtocol </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td style="font-size: 11px; padding: 5px;">WebSocket.protocol </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetReadyState </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td style="font-size: 11px; padding: 5px;">WebSocket.readyState </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetURL </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td style="font-size: 11px; padding: 5px;">WebSocket.url </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
</table>
<h3>PPP_Graphics3D</h3>
<table>
<tr bgcolor="#77ccff" style="color:white; font-weight: bold;">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">PPAPI Method </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;">Assumes Threads </td>
<td style="font-size: 11px; padding: 5px;">Emscripten </td>
<td style="font-size: 11px; padding: 5px;">Web API </td>
<td style="font-size: 11px; padding: 5px;">Limitations </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Graphics3DContextLost </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">SDL </td>
<td style="font-size: 11px; padding: 5px;">Canvas 'webglcontextlost' Event </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
</table>
<h3>PPP_InputEvent</h3>
<table>
<tr bgcolor="#77ccff" style="color:white; font-weight: bold;">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">PPAPI Method </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;">Assumes Threads </td>
<td style="font-size: 11px; padding: 5px;">Emscripten </td>
<td style="font-size: 11px; padding: 5px;">Web API </td>
<td style="font-size: 11px; padding: 5px;">Limitations </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">HandleInputEvent </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">SDL </td>
<td style="font-size: 11px; padding: 5px;">Element.addEventListener </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
</table>
<h3>PPP_Instance</h3>
<table>
<tr bgcolor="#77ccff" style="color:white; font-weight: bold;">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">PPAPI Method </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;">Assumes Threads </td>
<td style="font-size: 11px; padding: 5px;">Emscripten </td>
<td style="font-size: 11px; padding: 5px;">Web API </td>
<td style="font-size: 11px; padding: 5px;">Limitations </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">DidCreate </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">N/A </td>
<td style="font-size: 11px; padding: 5px;"><Element>[key] </td>
<td style="font-size: 11px; padding: 5px;">General DOM access lets you fish out tag attributes </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">DidDestroy </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">N/A </td>
<td style="font-size: 11px; padding: 5px;">N/A </td>
<td style="font-size: 11px; padding: 5px;">Not triggered for NaCl </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">DidChangeView </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">N/A </td>
<td style="font-size: 11px; padding: 5px;">Element 'resize' Event </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">DidChangeFocus </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">N/A </td>
<td style="font-size: 11px; padding: 5px;">Element 'focus', 'focusin', 'focusout' Events </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">HandleDocumentLoad </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">N/A </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP - No way to register as a mime type handler</td>
<td style="font-size: 11px; padding: 5px;">NaCl Modules via apps + a manifest entry can be set up to handle particular mime types. </td>
</tr>
</table>
<h3>PPP_MessageHandler</h3>
<table>
<tr bgcolor="#77ccff" style="color:white; font-weight: bold;">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">PPAPI Method </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;">Assumes Threads </td>
<td style="font-size: 11px; padding: 5px;">Emscripten </td>
<td style="font-size: 11px; padding: 5px;">Web API </td>
<td style="font-size: 11px; padding: 5px;">Limitations </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">HandleMessage </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">embind </td>
<td style="font-size: 11px; padding: 5px;">MessagePort 'message' Event
Window 'message' Event </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">HandleBlockingMessage </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">N/A </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP - No direct equivalent</td>
<td style="font-size: 11px; padding: 5px;">Similar synchronization can be done off main thread with Atomics.wait. This was added to support emulation of synchronous plugin APIs. </td>
</tr>
</table>
<h3>PPP_Messaging</h3>
<table>
<tr bgcolor="#77ccff" style="color:white; font-weight: bold;">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">PPAPI Method </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;">Assumes Threads </td>
<td style="font-size: 11px; padding: 5px;">Emscripten </td>
<td style="font-size: 11px; padding: 5px;">Web API </td>
<td style="font-size: 11px; padding: 5px;">Limitations </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">HandleMessage </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">embind </td>
<td style="font-size: 11px; padding: 5px;">MessagePort 'message' Event
Window 'message' Event </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
</table>
<h3>PPP_MouseLock</h3>
<table>
<tr bgcolor="#77ccff" style="color:white; font-weight: bold;">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">PPAPI Method </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;">Assumes Threads </td>
<td style="font-size: 11px; padding: 5px;">Emscripten </td>
<td style="font-size: 11px; padding: 5px;">Web API </td>
<td style="font-size: 11px; padding: 5px;">Limitations </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">MouseLockLost </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;"> </td>
<td style="font-size: 11px; padding: 5px;">SDL </td>
<td style="font-size: 11px; padding: 5px;">Element 'pointerlockchange', 'pointerlockerror' Events </td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
</table>
<h2 id="ppapi-apps">PPAPI (Apps)</h2>
<table>
</table>
<h3>PPB_HostResolver</h3>
<table>
<tr bgcolor="#77ccff" style="color:white; font-weight: bold;">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">PPAPI Method </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;">Assumes Threads </td>
<td style="font-size: 11px; padding: 5px;">Emscripten </td>
<td style="font-size: 11px; padding: 5px;">Web API </td>
<td style="font-size: 11px; padding: 5px;">Limitations </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Create </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;">x </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td bgcolor="#ffeecc" style="font-size: 11px; padding: 5px;">GAP (partial) - No direct equivalent</td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Resolve </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;">x </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td bgcolor="#ffeecc" style="font-size: 11px; padding: 5px;">GAP (partial) - No direct equivalent</td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetCanonicalName </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;">x </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td bgcolor="#ffeecc" style="font-size: 11px; padding: 5px;">GAP (partial) - No direct equivalent</td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetNetAddressCount </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;">x </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td bgcolor="#ffeecc" style="font-size: 11px; padding: 5px;">GAP (partial) - No direct equivalent</td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetNetAddress </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;">x </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td bgcolor="#ffeecc" style="font-size: 11px; padding: 5px;">GAP (partial) - No direct equivalent</td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
</table>
<h3>PPB_NetAddress</h3>
<table>
<tr bgcolor="#77ccff" style="color:white; font-weight: bold;">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">PPAPI Method </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;">Assumes Threads </td>
<td style="font-size: 11px; padding: 5px;">Emscripten </td>
<td style="font-size: 11px; padding: 5px;">Web API </td>
<td style="font-size: 11px; padding: 5px;">Limitations </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">CreateFromIPv4Address </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;">x </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td bgcolor="#ffeecc" style="font-size: 11px; padding: 5px;">GAP (partial) - No direct equivalent</td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">CreateFromIPv6Address </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;">x </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td bgcolor="#ffeecc" style="font-size: 11px; padding: 5px;">GAP (partial) - No direct equivalent</td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetFamily </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;">x </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td bgcolor="#ffeecc" style="font-size: 11px; padding: 5px;">GAP (partial) - No direct equivalent</td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">DescribeAsString </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;">x </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td bgcolor="#ffeecc" style="font-size: 11px; padding: 5px;">GAP (partial) - No direct equivalent</td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">DescribeAsIPv4Address </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;">x </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td bgcolor="#ffeecc" style="font-size: 11px; padding: 5px;">GAP (partial) - No direct equivalent</td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">DescribeAsIPv6Address </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;">x </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td bgcolor="#ffeecc" style="font-size: 11px; padding: 5px;">GAP (partial) - No direct equivalent</td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
</table>
<h3>PPB_NetworkList</h3>
<table>
<tr bgcolor="#77ccff" style="color:white; font-weight: bold;">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">PPAPI Method </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;">Assumes Threads </td>
<td style="font-size: 11px; padding: 5px;">Emscripten </td>
<td style="font-size: 11px; padding: 5px;">Web API </td>
<td style="font-size: 11px; padding: 5px;">Limitations </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetCount </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;">x </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP - No direct equivalent</td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetName </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;">x </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP - No direct equivalent</td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetType </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;">x </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP - No direct equivalent</td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetState </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;">x </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP - No direct equivalent</td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetIpAddress </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;">x </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP - No direct equivalent</td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetDisplayName </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;">x </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP - No direct equivalent</td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetMTU </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;">x </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP - No direct equivalent</td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
</table>
<h3>PPB_NetworkMonitor</h3>
<table>
<tr bgcolor="#77ccff" style="color:white; font-weight: bold;">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">PPAPI Method </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;">Assumes Threads </td>
<td style="font-size: 11px; padding: 5px;">Emscripten </td>
<td style="font-size: 11px; padding: 5px;">Web API </td>
<td style="font-size: 11px; padding: 5px;">Limitations </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Create </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;">x </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP - No direct equivalent</td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">UpdateNetworkList </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;">x </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP - No direct equivalent</td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
</table>
<h3>PPB_NetworkProxy</h3>
<table>
<tr bgcolor="#77ccff" style="color:white; font-weight: bold;">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">PPAPI Method </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;">Assumes Threads </td>
<td style="font-size: 11px; padding: 5px;">Emscripten </td>
<td style="font-size: 11px; padding: 5px;">Web API </td>
<td style="font-size: 11px; padding: 5px;">Limitations </td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">GetProxyForURL </td>
<td style="width: 50px; text-align: center; font-size: 11px; padding: 5px;">x </td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP</td>
<td bgcolor="#ffcccc" style="font-size: 11px; padding: 5px;">GAP - No direct equivalent</td>
<td style="font-size: 11px; padding: 5px;"> </td>
</tr>
</table>
<h3>PPB_TCPSocket and PPB_UDPSocket</h3>
There is not a direct 1:1 mapping for migration. Instead, we have outlined some
user scenarios below and what the recommended migration path is.
<table>
<tr bgcolor="#77ccff" style="color:white; font-weight: bold;">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Use Case</td>
<td style="font-size: 11px; padding: 5px;">Recommendations</td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Screen sharing</td>
<td style="font-size: 11px; padding: 5px;">
<a href="https://developer.mozilla.org/en-US/docs/Web/API/MediaDevices/getDisplayMedia">
getDisplayMedia</a> and
<a href="https://webrtc.org/">WebRTC</a> (
<a href="https://webrtc.github.io/samples/src/content/getusermedia/getdisplaymedia/">
demo</a>)
</td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Loading from a
local server to minimize bandwidth usage</td>
<td style="font-size: 11px; padding: 5px;">XHR, Fetch, Streams, Service Worker, Cache APIs</td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Loading from a
local instance of a web app / Connecting to a local instance of a web app</td>
<td style="font-size: 11px; padding: 5px;"><a href="https://webrtc.org/">WebRTC</a></td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Chat</td>
<td style="font-size: 11px; padding: 5px;">
<a href="https://developer.mozilla.org/ja/docs/Web/API/WebSockets_API">WebSocket</a>*
</td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Realtime
audio/video communication</td>
<td style="font-size: 11px; padding: 5px;"><a href="https://webrtc.org/">WebRTC</a></td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Collaboration</td>
<td style="font-size: 11px; padding: 5px;">
<a href="https://developer.mozilla.org/ja/docs/Web/API/WebSockets_API">WebSocket</a>*
</td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Realtime
multiplayer games</td>
<td style="font-size: 11px; padding: 5px;">
<a href="https://github.com/WICG/web-transport/blob/master/README.md">WebTransport</a>**
unless P2P in which case <a href="https://webrtc.org/">WebRTC</a> (or
WebTransport over RTCIceTransport)
</td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Realtime
interactive streaming</td>
<td style="font-size: 11px; padding: 5px;">
<a href="https://github.com/WICG/web-transport/blob/master/README.md">WebTransport</a>**
</td>
</tr>
<tr bgcolor="#fcfcfc">
<td style="font-weight: bold; font-size: 11px; padding: 5px;">Communicating
with legacy server</td>
<td style="font-size: 11px; padding: 5px;">
Proxy server or middleware to do protocol conversion. Feedback to
<a href="http://bit.ly/network-api-gaps">bit.ly/network-api-gaps</a>
</td>
</tr>
</table>
<i>*: Or WebTransport in the future</i><br>
<i>**: See <a href="https://chromestatus.com/features#webtransport">chromestatus</a> for
availability</i>
</section>
{{/partials.standard_nacl_article}}
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