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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
* You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef AUDIOOUTPUTOBSERVER_H_
#define AUDIOOUTPUTOBSERVER_H_
#include "mozilla/StaticPtr.h"
#include "nsAutoPtr.h"
#include "AudioMixer.h"
namespace webrtc {
class SingleRwFifo;
}
namespace mozilla {
typedef struct FarEndAudioChunk_ {
uint16_t mSamples;
bool mOverrun;
int16_t mData[1]; // variable-length
} FarEndAudioChunk;
// XXX Really a singleton currently
class AudioOutputObserver : public MixerCallbackReceiver
{
public:
AudioOutputObserver();
NS_INLINE_DECL_THREADSAFE_REFCOUNTING(AudioOutputObserver);
void MixerCallback(AudioDataValue* aMixedBuffer,
AudioSampleFormat aFormat,
uint32_t aChannels,
uint32_t aFrames,
uint32_t aSampleRate) override;
void Clear();
void InsertFarEnd(const AudioDataValue *aBuffer, uint32_t aFrames, bool aOverran,
int aFreq, int aChannels, AudioSampleFormat aFormat);
uint32_t PlayoutFrequency() { return mPlayoutFreq; }
uint32_t PlayoutChannels() { return mPlayoutChannels; }
FarEndAudioChunk *Pop();
uint32_t Size();
private:
virtual ~AudioOutputObserver();
uint32_t mPlayoutFreq;
uint32_t mPlayoutChannels;
nsAutoPtr<webrtc::SingleRwFifo> mPlayoutFifo;
uint32_t mChunkSize;
// chunking to 10ms support
FarEndAudioChunk *mSaved; // can't be nsAutoPtr since we need to use free(), not delete
uint32_t mSamplesSaved;
};
extern StaticRefPtr<AudioOutputObserver> gFarendObserver;
}
#endif
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