/usr/include/thunderbird/OpusTrackEncoder.h is in thunderbird-dev 1:24.4.0+build1-0ubuntu1.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 | /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-*/
/* 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 OpusTrackEncoder_h_
#define OpusTrackEncoder_h_
#include "TrackEncoder.h"
#include "nsCOMPtr.h"
struct OpusEncoder;
namespace mozilla {
class OpusTrackEncoder : public AudioTrackEncoder
{
public:
OpusTrackEncoder();
virtual ~OpusTrackEncoder();
nsresult GetHeader(nsTArray<uint8_t>* aOutput) MOZ_OVERRIDE;
nsresult GetEncodedTrack(nsTArray<uint8_t>* aOutput, int &aOutputDuration) MOZ_OVERRIDE;
protected:
int GetPacketDuration() MOZ_OVERRIDE;
nsresult Init(int aChannels, int aSamplingRate) MOZ_OVERRIDE;
private:
enum {
ID_HEADER,
COMMENT_HEADER,
DATA
} mEncoderState;
/**
* The Opus encoder from libopus.
*/
OpusEncoder* mEncoder;
/**
* A local segment queue which stores the raw segments. Opus encoder only
* takes GetPacketDuration() samples from mSourceSegment in every encoding
* cycle, thus it needs to store the raw track data.
*/
nsAutoPtr<AudioSegment> mSourceSegment;
/**
* Total samples of delay added by codec, can be queried by the encoder. From
* the perspective of decoding, real data begins this many samples late, so
* the encoder needs to append this many null samples to the end of stream,
* in order to align the time of input and output.
*/
int mLookahead;
};
}
#endif
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