/* Copyright 2014 The Chromium Authors
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
/**
* Defines the <code>PPB_AudioBuffer</code> interface.
*/
[generate_thunk]
label Chrome {
[channel=dev] M34 = 0.1,
M35 = 0.1
};
/**
* PP_AudioBuffer_SampleRate is an enumeration of the different audio sample
* rates.
*/
enum PP_AudioBuffer_SampleRate {
PP_AUDIOBUFFER_SAMPLERATE_UNKNOWN = 0,
PP_AUDIOBUFFER_SAMPLERATE_8000 = 8000,
PP_AUDIOBUFFER_SAMPLERATE_16000 = 16000,
PP_AUDIOBUFFER_SAMPLERATE_22050 = 22050,
PP_AUDIOBUFFER_SAMPLERATE_32000 = 32000,
PP_AUDIOBUFFER_SAMPLERATE_44100 = 44100,
PP_AUDIOBUFFER_SAMPLERATE_48000 = 48000,
PP_AUDIOBUFFER_SAMPLERATE_96000 = 96000,
PP_AUDIOBUFFER_SAMPLERATE_192000 = 192000
};
/**
* PP_AudioBuffer_SampleSize is an enumeration of the different audio sample
* sizes.
*/
enum PP_AudioBuffer_SampleSize {
PP_AUDIOBUFFER_SAMPLESIZE_UNKNOWN = 0,
PP_AUDIOBUFFER_SAMPLESIZE_16_BITS = 2
};
[version=0.1]
interface PPB_AudioBuffer {
/**
* Determines if a resource is an AudioBuffer resource.
*
* @param[in] resource The <code>PP_Resource</code> to test.
*
* @return A <code>PP_Bool</code> with <code>PP_TRUE</code> if the given
* resource is an AudioBuffer resource or <code>PP_FALSE</code> otherwise.
*/
PP_Bool IsAudioBuffer([in] PP_Resource resource);
/**
* Gets the timestamp of the audio buffer.
*
* @param[in] buffer A <code>PP_Resource</code> corresponding to an audio
* buffer resource.
*
* @return A <code>PP_TimeDelta</code> containing the timestamp of the audio
* buffer. Given in seconds since the start of the containing audio stream.
*/
[on_failure=0.0]
PP_TimeDelta GetTimestamp([in] PP_Resource buffer);
/**
* Sets the timestamp of the audio buffer.
*
* @param[in] buffer A <code>PP_Resource</code> corresponding to an audio
* buffer resource.
* @param[in] timestamp A <code>PP_TimeDelta</code> containing the timestamp
* of the audio buffer. Given in seconds since the start of the containing
* audio stream.
*/
void SetTimestamp([in] PP_Resource buffer, [in] PP_TimeDelta timestamp);
/**
* Gets the sample rate of the audio buffer.
*
* @param[in] buffer A <code>PP_Resource</code> corresponding to an audio
* buffer resource.
*
* @return The sample rate of the audio buffer.
*/
[on_failure=PP_AUDIOBUFFER_SAMPLERATE_UNKNOWN]
PP_AudioBuffer_SampleRate GetSampleRate([in] PP_Resource buffer);
/**
* Gets the sample size of the audio buffer.
*
* @param[in] buffer A <code>PP_Resource</code> corresponding to an audio
* buffer resource.
*
* @return The sample size of the audio buffer.
*/
[on_failure=PP_AUDIOBUFFER_SAMPLESIZE_UNKNOWN]
PP_AudioBuffer_SampleSize GetSampleSize([in] PP_Resource buffer);
/**
* Gets the number of channels in the audio buffer.
*
* @param[in] buffer A <code>PP_Resource</code> corresponding to an audio
* buffer resource.
*
* @return The number of channels in the audio buffer.
*/
uint32_t GetNumberOfChannels([in] PP_Resource buffer);
/**
* Gets the number of samples in the audio buffer.
*
* @param[in] buffer A <code>PP_Resource</code> corresponding to an audio
* buffer resource.
*
* @return The number of samples in the audio buffer.
* For example, at a sampling rate of 44,100 Hz in stereo audio, a buffer
* containing 4410 * 2 samples would have a duration of 100 milliseconds.
*/
uint32_t GetNumberOfSamples([in] PP_Resource buffer);
/**
* Gets the data buffer containing the audio samples.
*
* @param[in] buffer A <code>PP_Resource</code> corresponding to an audio
* buffer resource.
*
* @return A pointer to the beginning of the data buffer.
*/
mem_t GetDataBuffer([in] PP_Resource buffer);
/**
* Gets the size of the data buffer in bytes.
*
* @param[in] buffer A <code>PP_Resource</code> corresponding to an audio
* buffer resource.
*
* @return The size of the data buffer in bytes.
*/
uint32_t GetDataBufferSize([in] PP_Resource buffer);
};
Codebase Browser
chromium