content/media/fmp4/MP4Reader.h@97036ab72558 (annotated)
content/media/fmp4/MP4Reader.h
Tue, 06 Jan 2015 21:39:09 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Tue, 06 Jan 2015 21:39:09 +0100
- branch
- TOR_BUG_9701
- changeset 8
- 97036ab72558
- permissions
- -rw-r--r--
Conditionally force memory storage according to privacy.thirdparty.isolate;
This solves Tor bug #9701, complying with disk avoidance documented in
https://www.torproject.org/projects/torbrowser/design/#disk-avoidance.
| michael@0 | 1 | /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ |
| michael@0 | 2 | /* vim:set ts=2 sw=2 sts=2 et cindent: */ |
| michael@0 | 3 | /* This Source Code Form is subject to the terms of the Mozilla Public |
| michael@0 | 4 | * License, v. 2.0. If a copy of the MPL was not distributed with this |
| michael@0 | 5 | * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
| michael@0 | 6 | |
| michael@0 | 7 | #if !defined(MP4Reader_h_) |
| michael@0 | 8 | #define MP4Reader_h_ |
| michael@0 | 9 | |
| michael@0 | 10 | #include "MediaDecoderReader.h" |
| michael@0 | 11 | #include "nsAutoPtr.h" |
| michael@0 | 12 | #include "PlatformDecoderModule.h" |
| michael@0 | 13 | #include "mp4_demuxer/mp4_demuxer.h" |
| michael@0 | 14 | #include "mp4_demuxer/box_definitions.h" |
| michael@0 | 15 | #include "MediaTaskQueue.h" |
| michael@0 | 16 | |
| michael@0 | 17 | #include <deque> |
| michael@0 | 18 | #include "mozilla/Monitor.h" |
| michael@0 | 19 | |
| michael@0 | 20 | namespace mozilla { |
| michael@0 | 21 | |
| michael@0 | 22 | namespace dom { |
| michael@0 | 23 | class TimeRanges; |
| michael@0 | 24 | } |
| michael@0 | 25 | |
| michael@0 | 26 | typedef std::deque<mp4_demuxer::MP4Sample*> MP4SampleQueue; |
| michael@0 | 27 | |
| michael@0 | 28 | class MP4Stream; |
| michael@0 | 29 | |
| michael@0 | 30 | class MP4Reader : public MediaDecoderReader |
| michael@0 | 31 | { |
| michael@0 | 32 | public: |
| michael@0 | 33 | MP4Reader(AbstractMediaDecoder* aDecoder); |
| michael@0 | 34 | |
| michael@0 | 35 | virtual ~MP4Reader(); |
| michael@0 | 36 | |
| michael@0 | 37 | virtual nsresult Init(MediaDecoderReader* aCloneDonor) MOZ_OVERRIDE; |
| michael@0 | 38 | |
| michael@0 | 39 | virtual bool DecodeAudioData() MOZ_OVERRIDE; |
| michael@0 | 40 | virtual bool DecodeVideoFrame(bool &aKeyframeSkip, |
| michael@0 | 41 | int64_t aTimeThreshold) MOZ_OVERRIDE; |
| michael@0 | 42 | |
| michael@0 | 43 | virtual bool HasAudio() MOZ_OVERRIDE; |
| michael@0 | 44 | virtual bool HasVideo() MOZ_OVERRIDE; |
| michael@0 | 45 | |
| michael@0 | 46 | virtual nsresult ReadMetadata(MediaInfo* aInfo, |
| michael@0 | 47 | MetadataTags** aTags) MOZ_OVERRIDE; |
| michael@0 | 48 | |
| michael@0 | 49 | virtual nsresult Seek(int64_t aTime, |
| michael@0 | 50 | int64_t aStartTime, |
| michael@0 | 51 | int64_t aEndTime, |
| michael@0 | 52 | int64_t aCurrentTime) MOZ_OVERRIDE; |
| michael@0 | 53 | private: |
| michael@0 | 54 | |
| michael@0 | 55 | // Destroys all decoder resources. |
| michael@0 | 56 | void Shutdown(); |
| michael@0 | 57 | |
| michael@0 | 58 | // Initializes mLayersBackendType if possible. |
| michael@0 | 59 | void InitLayersBackendType(); |
| michael@0 | 60 | |
| michael@0 | 61 | // Blocks until the demuxer produces an sample of specified type. |
| michael@0 | 62 | // Returns nullptr on error on EOS. Caller must delete sample. |
| michael@0 | 63 | mp4_demuxer::MP4Sample* PopSample(mp4_demuxer::TrackType aTrack); |
| michael@0 | 64 | |
| michael@0 | 65 | bool SkipVideoDemuxToNextKeyFrame(int64_t aTimeThreshold, uint32_t& parsed); |
| michael@0 | 66 | |
| michael@0 | 67 | void Output(mp4_demuxer::TrackType aType, MediaData* aSample); |
| michael@0 | 68 | void InputExhausted(mp4_demuxer::TrackType aTrack); |
| michael@0 | 69 | void Error(mp4_demuxer::TrackType aTrack); |
| michael@0 | 70 | bool Decode(mp4_demuxer::TrackType aTrack); |
| michael@0 | 71 | void Flush(mp4_demuxer::TrackType aTrack); |
| michael@0 | 72 | |
| michael@0 | 73 | nsAutoPtr<mp4_demuxer::MP4Demuxer> mDemuxer; |
| michael@0 | 74 | nsAutoPtr<MP4Stream> mMP4Stream; |
| michael@0 | 75 | nsAutoPtr<PlatformDecoderModule> mPlatform; |
| michael@0 | 76 | |
| michael@0 | 77 | class DecoderCallback : public MediaDataDecoderCallback { |
| michael@0 | 78 | public: |
| michael@0 | 79 | DecoderCallback(MP4Reader* aReader, |
| michael@0 | 80 | mp4_demuxer::TrackType aType) |
| michael@0 | 81 | : mReader(aReader) |
| michael@0 | 82 | , mType(aType) |
| michael@0 | 83 | { |
| michael@0 | 84 | } |
| michael@0 | 85 | virtual void Output(MediaData* aSample) MOZ_OVERRIDE { |
| michael@0 | 86 | mReader->Output(mType, aSample); |
| michael@0 | 87 | } |
| michael@0 | 88 | virtual void InputExhausted() MOZ_OVERRIDE { |
| michael@0 | 89 | mReader->InputExhausted(mType); |
| michael@0 | 90 | } |
| michael@0 | 91 | virtual void Error() MOZ_OVERRIDE { |
| michael@0 | 92 | mReader->Error(mType); |
| michael@0 | 93 | } |
| michael@0 | 94 | private: |
| michael@0 | 95 | MP4Reader* mReader; |
| michael@0 | 96 | mp4_demuxer::TrackType mType; |
| michael@0 | 97 | }; |
| michael@0 | 98 | |
| michael@0 | 99 | struct DecoderData { |
| michael@0 | 100 | DecoderData(const char* aMonitorName, |
| michael@0 | 101 | uint32_t aDecodeAhead) |
| michael@0 | 102 | : mMonitor(aMonitorName) |
| michael@0 | 103 | , mNumSamplesInput(0) |
| michael@0 | 104 | , mNumSamplesOutput(0) |
| michael@0 | 105 | , mDecodeAhead(aDecodeAhead) |
| michael@0 | 106 | , mActive(false) |
| michael@0 | 107 | , mInputExhausted(false) |
| michael@0 | 108 | , mError(false) |
| michael@0 | 109 | , mIsFlushing(false) |
| michael@0 | 110 | { |
| michael@0 | 111 | } |
| michael@0 | 112 | |
| michael@0 | 113 | // The platform decoder. |
| michael@0 | 114 | RefPtr<MediaDataDecoder> mDecoder; |
| michael@0 | 115 | // Queue of input extracted by the demuxer, but not yet sent to the |
| michael@0 | 116 | // platform decoder. |
| michael@0 | 117 | MP4SampleQueue mDemuxedSamples; |
| michael@0 | 118 | // TaskQueue on which decoder can choose to decode. |
| michael@0 | 119 | // Only non-null up until the decoder is created. |
| michael@0 | 120 | RefPtr<MediaTaskQueue> mTaskQueue; |
| michael@0 | 121 | // Callback that receives output and error notifications from the decoder. |
| michael@0 | 122 | nsAutoPtr<DecoderCallback> mCallback; |
| michael@0 | 123 | // Monitor that protects all non-threadsafe state; the primitives |
| michael@0 | 124 | // that follow. |
| michael@0 | 125 | Monitor mMonitor; |
| michael@0 | 126 | uint64_t mNumSamplesInput; |
| michael@0 | 127 | uint64_t mNumSamplesOutput; |
| michael@0 | 128 | uint32_t mDecodeAhead; |
| michael@0 | 129 | // Whether this stream exists in the media. |
| michael@0 | 130 | bool mActive; |
| michael@0 | 131 | bool mInputExhausted; |
| michael@0 | 132 | bool mError; |
| michael@0 | 133 | bool mIsFlushing; |
| michael@0 | 134 | }; |
| michael@0 | 135 | DecoderData mAudio; |
| michael@0 | 136 | DecoderData mVideo; |
| michael@0 | 137 | |
| michael@0 | 138 | // The last number of decoded output frames that we've reported to |
| michael@0 | 139 | // MediaDecoder::NotifyDecoded(). We diff the number of output video |
| michael@0 | 140 | // frames every time that DecodeVideoData() is called, and report the |
| michael@0 | 141 | // delta there. |
| michael@0 | 142 | uint64_t mLastReportedNumDecodedFrames; |
| michael@0 | 143 | |
| michael@0 | 144 | DecoderData& GetDecoderData(mp4_demuxer::TrackType aTrack); |
| michael@0 | 145 | MP4SampleQueue& SampleQueue(mp4_demuxer::TrackType aTrack); |
| michael@0 | 146 | MediaDataDecoder* Decoder(mp4_demuxer::TrackType aTrack); |
| michael@0 | 147 | |
| michael@0 | 148 | layers::LayersBackend mLayersBackendType; |
| michael@0 | 149 | |
| michael@0 | 150 | }; |
| michael@0 | 151 | |
| michael@0 | 152 | } // namespace mozilla |
| michael@0 | 153 | |
| michael@0 | 154 | #endif |
