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6dc755a5f1
In Gecko (and everywhere else, but sometimes not in the WebRTC code), a "frame" or "sample-frames" is the set of all sample that will play at the same time on all channels, whereas a "sample" is a single value on a specific channel.
56 lines
1.4 KiB
C++
56 lines
1.4 KiB
C++
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this file,
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* You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef AUDIOOUTPUTOBSERVER_H_
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#define AUDIOOUTPUTOBSERVER_H_
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#include "mozilla/StaticPtr.h"
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namespace webrtc {
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class SingleRwFifo;
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}
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namespace mozilla {
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typedef struct FarEndAudioChunk_ {
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uint16_t mSamples;
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bool mOverrun;
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int16_t mData[1]; // variable-length
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} FarEndAudioChunk;
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// XXX Really a singleton currently
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class AudioOutputObserver // : public MSGOutputObserver
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{
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public:
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AudioOutputObserver();
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virtual ~AudioOutputObserver();
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void Clear();
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void InsertFarEnd(const AudioDataValue *aBuffer, uint32_t aFrames, bool aOverran,
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int aFreq, int aChannels, AudioSampleFormat aFormat);
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uint32_t PlayoutFrequency() { return mPlayoutFreq; }
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uint32_t PlayoutChannels() { return mPlayoutChannels; }
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FarEndAudioChunk *Pop();
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uint32_t Size();
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private:
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uint32_t mPlayoutFreq;
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uint32_t mPlayoutChannels;
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nsAutoPtr<webrtc::SingleRwFifo> mPlayoutFifo;
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uint32_t mChunkSize;
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// chunking to 10ms support
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FarEndAudioChunk *mSaved; // can't be nsAutoPtr since we need to use moz_free()
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uint32_t mSamplesSaved;
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};
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// XXX until there's a registration API in MSG
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extern StaticAutoPtr<AudioOutputObserver> gFarendObserver;
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}
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#endif
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