| // Copyright 2013 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef CONTENT_PUBLIC_RENDERER_MEDIA_STREAM_AUDIO_SINK_H_ |
| #define CONTENT_PUBLIC_RENDERER_MEDIA_STREAM_AUDIO_SINK_H_ |
| |
| #include <vector> |
| |
| #include "base/basictypes.h" |
| #include "content/common/content_export.h" |
| #include "content/public/renderer/media_stream_sink.h" |
| |
| namespace blink { |
| class WebMediaStreamTrack; |
| } |
| |
| namespace media { |
| class AudioParameters; |
| } |
| |
| namespace content { |
| |
| class CONTENT_EXPORT MediaStreamAudioSink : public MediaStreamSink { |
| public: |
| // Adds a MediaStreamAudioSink to the audio track to receive audio data from |
| // the track. |
| // Called on the main render thread. |
| static void AddToAudioTrack(MediaStreamAudioSink* sink, |
| const blink::WebMediaStreamTrack& track); |
| |
| // Removes a MediaStreamAudioSink from the audio track to stop receiving |
| // audio data from the track. |
| // Called on the main render thread. |
| static void RemoveFromAudioTrack(MediaStreamAudioSink* sink, |
| const blink::WebMediaStreamTrack& track); |
| |
| // Callback on delivering the interleaved audio data. |
| // |audio_data| is the pointer to the audio data. |
| // |sample_rate| is the sample frequency of |audio_data|. |
| // |number_of_channels| is the number of audio channels of |audio_data|. |
| // |number_of_frames| is the number of audio frames in the |audio_data|. |
| // Called on real-time audio thread. |
| virtual void OnData(const int16* audio_data, |
| int sample_rate, |
| int number_of_channels, |
| int number_of_frames) = 0; |
| |
| // Callback called when the format of the audio stream has changed. |
| // This is called on the same thread as OnData(). |
| virtual void OnSetFormat(const media::AudioParameters& params) = 0; |
| |
| protected: |
| ~MediaStreamAudioSink() override {} |
| }; |
| |
| } // namespace content |
| |
| #endif // CONTENT_PUBLIC_RENDERER_MEDIA_STREAM_AUDIO_SINK_H_ |