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comparison: content/media/encoder/VorbisTrackEncoder.h
content/media/encoder/VorbisTrackEncoder.h
- branch
- TOR_BUG_9701
- changeset 13
- 44a2da4a2ab2
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| -1:000000000000 | 0:e710f68da66f |
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| 1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-*/ | |
| 2 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 3 * License, v. 2.0. If a copy of the MPL was not distributed with this file, | |
| 4 * You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 5 | |
| 6 #ifndef VorbisTrackEncoder_h_ | |
| 7 #define VorbisTrackEncoder_h_ | |
| 8 | |
| 9 #include "TrackEncoder.h" | |
| 10 #include "nsCOMPtr.h" | |
| 11 #include <vorbis/codec.h> | |
| 12 | |
| 13 namespace mozilla { | |
| 14 | |
| 15 class VorbisTrackEncoder : public AudioTrackEncoder | |
| 16 { | |
| 17 public: | |
| 18 VorbisTrackEncoder(); | |
| 19 virtual ~VorbisTrackEncoder(); | |
| 20 | |
| 21 already_AddRefed<TrackMetadataBase> GetMetadata() MOZ_FINAL MOZ_OVERRIDE; | |
| 22 | |
| 23 nsresult GetEncodedTrack(EncodedFrameContainer& aData) MOZ_FINAL MOZ_OVERRIDE; | |
| 24 | |
| 25 protected: | |
| 26 /** | |
| 27 * http://xiph.org/vorbis/doc/libvorbis/vorbis_analysis_buffer.html | |
| 28 * We use 1024 samples for the write buffer; libvorbis will construct packets | |
| 29 * with the appropriate duration for the encoding mode internally. | |
| 30 */ | |
| 31 int GetPacketDuration() MOZ_FINAL MOZ_OVERRIDE { | |
| 32 return 1024; | |
| 33 } | |
| 34 | |
| 35 nsresult Init(int aChannels, int aSamplingRate) MOZ_FINAL MOZ_OVERRIDE; | |
| 36 | |
| 37 private: | |
| 38 // Write Xiph-style lacing to aOutput. | |
| 39 void WriteLacing(nsTArray<uint8_t> *aOutput, int32_t aLacing); | |
| 40 | |
| 41 // Get the encoded data from vorbis encoder and append into aData. | |
| 42 void GetEncodedFrames(EncodedFrameContainer& aData); | |
| 43 | |
| 44 // vorbis codec members | |
| 45 // Struct that stores all the static vorbis bitstream settings. | |
| 46 vorbis_info mVorbisInfo; | |
| 47 // Central working state for the PCM->packet encoder. | |
| 48 vorbis_dsp_state mVorbisDsp; | |
| 49 // Local working space for PCM->packet encode. | |
| 50 vorbis_block mVorbisBlock; | |
| 51 }; | |
| 52 | |
| 53 } | |
| 54 #endif |
