// 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:
virtual ~MediaStreamAudioSink() {}
};
} // namespace content
#endif // CONTENT_PUBLIC_RENDERER_MEDIA_STREAM_AUDIO_SINK_H_