// META: global=window,dedicatedworker
// META: script=/webcodecs/utils.js
const invalidConfigs = [
{
comment: 'Missing codec',
config: {
sampleRate: 48000,
numberOfChannels: 2,
},
},
{
comment: 'Empty codec',
config: {
codec: '',
sampleRate: 48000,
numberOfChannels: 2,
},
},
{
comment: 'Missing sampleRate',
config: {
codec: 'opus',
sampleRate: 48000,
},
},
{
comment: 'Missing numberOfChannels',
config: {
codec: 'opus',
sampleRate: 48000,
},
},
{
comment: 'Zero sampleRate',
config: {
codec: 'opus',
sampleRate: 0,
numberOfChannels: 2,
},
},
{
comment: 'Zero channels',
config: {
codec: 'opus',
sampleRate: 8000,
numberOfChannels: 0,
},
},
{
comment: 'Bit rate too big',
config: {
codec: 'opus',
sampleRate: 8000,
numberOfChannels: 2,
bitrate: 6e9,
},
},
{
comment: 'Bit rate present but equal to zero',
config: {
codec: 'opus',
sampleRate: 8000,
numberOfChannels: 2,
bitrate: 0,
},
},
{
comment: 'Opus complexity too big',
config: {
codec: 'opus',
sampleRate: 8000,
numberOfChannels: 2,
opus: {
complexity: 11,
},
},
},
{
comment: 'Opus packetlossperc too big',
config: {
codec: 'opus',
sampleRate: 8000,
numberOfChannels: 2,
opus: {
packetlossperc: 101,
},
},
},
{
comment: 'Opus frame duration too small',
config: {
codec: 'opus',
sampleRate: 8000,
numberOfChannels: 2,
opus: {
frameDuration: 0,
},
},
},
{
comment: 'Opus frame duration too big',
config: {
codec: 'opus',
sampleRate: 8000,
numberOfChannels: 2,
opus: {
frameDuration: 120 * 1000 + 1,
},
},
},
{
comment: 'Invalid Opus frameDuration',
config: {
codec: 'opus',
sampleRate: 8000,
numberOfChannels: 2,
opus: {
frameDuration: 2501,
},
},
},
{
comment: 'Bitrate is too low for Opus',
config: {
codec: 'opus',
sampleRate: 48000,
numberOfChannels: 2,
bitrate: 1,
},
},
];
invalidConfigs.forEach(entry => {
promise_test(
t => {
return promise_rejects_js(
t, TypeError, AudioEncoder.isConfigSupported(entry.config));
},
'Test that AudioEncoder.isConfigSupported() rejects invalid config: ' +
entry.comment);
});
invalidConfigs.forEach(entry => {
async_test(
t => {
let codec = new AudioEncoder(getDefaultCodecInit(t));
assert_throws_js(TypeError, () => {
codec.configure(entry.config);
});
t.done();
},
'Test that AudioEncoder.configure() rejects invalid config: ' +
entry.comment);
});
const validButUnsupportedConfigs = [
{
comment: 'Unrecognized codec',
config: {
codec: 'bogus',
sampleRate: 48000,
numberOfChannels: 2,
},
},
{
comment: 'Sample rate is too small',
config: {
codec: 'opus',
sampleRate: 1,
numberOfChannels: 2,
},
},
{
comment: 'Sample rate is too large',
config: {
codec: 'opus',
sampleRate: 10000000,
numberOfChannels: 2,
},
},
{
comment: 'Way too many channels',
config: {
codec: 'opus',
sampleRate: 8000,
numberOfChannels: 1024,
bitrate: 128000,
},
},
{
comment: 'Possible future opus codec string',
config: {
codec: 'opus.123',
sampleRate: 48000,
numberOfChannels: 2,
}
},
{
comment: 'Possible future aac codec string',
config: {
codec: 'mp4a.FF.9',
sampleRate: 48000,
numberOfChannels: 2,
}
},
];
validButUnsupportedConfigs.forEach(entry => {
promise_test(
async t => {
let support = await AudioEncoder.isConfigSupported(entry.config);
assert_false(support.supported);
let config = support.config;
assert_equals(config.codec, entry.config.codec);
assert_equals(config.sampleRate, entry.config.sampleRate);
assert_equals(config.numberOfChannels, entry.config.numberOfChannels);
},
'Test that AudioEncoder.isConfigSupported() doesn\'t support config: ' +
entry.comment);
});
validButUnsupportedConfigs.forEach(entry => {
promise_test(
t => {
let isErrorCallbackCalled = false;
let codec = new AudioEncoder({
output: t.unreached_func('unexpected output'),
error: t.step_func_done(e => {
isErrorCallbackCalled = true;
assert_true(e instanceof DOMException);
assert_equals(e.name, 'NotSupportedError');
assert_equals(codec.state, 'closed', 'state');
})
});
codec.configure(entry.config);
return codec.flush()
.then(t.unreached_func('flush succeeded unexpectedly'))
.catch(t.step_func(e => {
assert_true(isErrorCallbackCalled, "isErrorCallbackCalled");
assert_true(e instanceof DOMException);
assert_equals(e.name, 'NotSupportedError');
assert_equals(codec.state, 'closed', 'state');
}));
},
'Test that AudioEncoder.configure() doesn\'t support config: ' +
entry.comment);
});
const validConfigs = [
{
codec: 'opus',
sampleRate: 8000,
numberOfChannels: 1,
},
{
codec: 'opus',
sampleRate: 48000,
numberOfChannels: 2,
},
{
codec: 'opus',
sampleRate: 48000,
numberOfChannels: 2,
bitrate: 128000,
bitrateMode: "constant",
bogus: 123
},
{
codec: 'opus',
sampleRate: 48000,
numberOfChannels: 2,
bitrate: 128000,
bitrateMode: "variable",
bogus: 123
},
{
codec: 'opus',
sampleRate: 48000,
numberOfChannels: 2,
opus: {
complexity: 5,
signal: 'music',
application: 'audio',
frameDuration: 20000,
packetlossperc: 10,
useinbandfec: true,
},
},
{
codec: 'opus',
sampleRate: 48000,
numberOfChannels: 2,
opus: {
format: 'opus',
signal: 'voice',
application: 'lowdelay',
complexity: 10,
frameDuration: 60000,
packetlossperc: 20, // Irrelevant without useinbandfec, but still valid.
usedtx: true,
bogus: 456,
},
},
{
codec: 'opus',
sampleRate: 48000,
numberOfChannels: 2,
opus: {}, // Use default values.
},
];
validConfigs.forEach(config => {
promise_test(async t => {
let support = await AudioEncoder.isConfigSupported(config);
assert_true(support.supported);
let new_config = support.config;
assert_equals(new_config.codec, config.codec);
assert_equals(new_config.sampleRate, config.sampleRate);
assert_equals(new_config.numberOfChannels, config.numberOfChannels);
if (config.bitrate)
assert_equals(new_config.bitrate, config.bitrate);
if (config.opus) {
let opus_config = config.opus;
let new_opus_config = new_config.opus;
assert_equals(new_opus_config.format, opus_config.format ?? 'opus');
assert_equals(
new_opus_config.frameDuration, opus_config.frameDuration ?? 20000);
assert_equals(
new_opus_config.packetlossperc, opus_config.packetlossperc ?? 0);
assert_equals(
new_opus_config.useinbandfec, opus_config.useinbandfec ?? false);
assert_equals(new_opus_config.usedtx, opus_config.usedtx ?? false);
assert_false(new_opus_config.hasOwnProperty('bogus'));
if (opus_config.complexity) {
assert_equals(new_opus_config.complexity, opus_config.complexity);
} else {
// Default complexity is 5 for mobile/ARM platforms, and 9 otherwise.
assert_true(
new_opus_config.complexity == 5 || new_opus_config.complexity == 9);
}
} else {
assert_false(new_config.hasOwnProperty('opus'));
}
assert_false(new_config.hasOwnProperty('bogus'));
}, 'AudioEncoder.isConfigSupported() supports: ' + JSON.stringify(config));
});
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