1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/content/media/fmp4/MP4Reader.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,154 @@
1.4 +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
1.5 +/* vim:set ts=2 sw=2 sts=2 et cindent: */
1.6 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.7 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.8 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.9 +
1.10 +#if !defined(MP4Reader_h_)
1.11 +#define MP4Reader_h_
1.12 +
1.13 +#include "MediaDecoderReader.h"
1.14 +#include "nsAutoPtr.h"
1.15 +#include "PlatformDecoderModule.h"
1.16 +#include "mp4_demuxer/mp4_demuxer.h"
1.17 +#include "mp4_demuxer/box_definitions.h"
1.18 +#include "MediaTaskQueue.h"
1.19 +
1.20 +#include <deque>
1.21 +#include "mozilla/Monitor.h"
1.22 +
1.23 +namespace mozilla {
1.24 +
1.25 +namespace dom {
1.26 +class TimeRanges;
1.27 +}
1.28 +
1.29 +typedef std::deque<mp4_demuxer::MP4Sample*> MP4SampleQueue;
1.30 +
1.31 +class MP4Stream;
1.32 +
1.33 +class MP4Reader : public MediaDecoderReader
1.34 +{
1.35 +public:
1.36 + MP4Reader(AbstractMediaDecoder* aDecoder);
1.37 +
1.38 + virtual ~MP4Reader();
1.39 +
1.40 + virtual nsresult Init(MediaDecoderReader* aCloneDonor) MOZ_OVERRIDE;
1.41 +
1.42 + virtual bool DecodeAudioData() MOZ_OVERRIDE;
1.43 + virtual bool DecodeVideoFrame(bool &aKeyframeSkip,
1.44 + int64_t aTimeThreshold) MOZ_OVERRIDE;
1.45 +
1.46 + virtual bool HasAudio() MOZ_OVERRIDE;
1.47 + virtual bool HasVideo() MOZ_OVERRIDE;
1.48 +
1.49 + virtual nsresult ReadMetadata(MediaInfo* aInfo,
1.50 + MetadataTags** aTags) MOZ_OVERRIDE;
1.51 +
1.52 + virtual nsresult Seek(int64_t aTime,
1.53 + int64_t aStartTime,
1.54 + int64_t aEndTime,
1.55 + int64_t aCurrentTime) MOZ_OVERRIDE;
1.56 +private:
1.57 +
1.58 + // Destroys all decoder resources.
1.59 + void Shutdown();
1.60 +
1.61 + // Initializes mLayersBackendType if possible.
1.62 + void InitLayersBackendType();
1.63 +
1.64 + // Blocks until the demuxer produces an sample of specified type.
1.65 + // Returns nullptr on error on EOS. Caller must delete sample.
1.66 + mp4_demuxer::MP4Sample* PopSample(mp4_demuxer::TrackType aTrack);
1.67 +
1.68 + bool SkipVideoDemuxToNextKeyFrame(int64_t aTimeThreshold, uint32_t& parsed);
1.69 +
1.70 + void Output(mp4_demuxer::TrackType aType, MediaData* aSample);
1.71 + void InputExhausted(mp4_demuxer::TrackType aTrack);
1.72 + void Error(mp4_demuxer::TrackType aTrack);
1.73 + bool Decode(mp4_demuxer::TrackType aTrack);
1.74 + void Flush(mp4_demuxer::TrackType aTrack);
1.75 +
1.76 + nsAutoPtr<mp4_demuxer::MP4Demuxer> mDemuxer;
1.77 + nsAutoPtr<MP4Stream> mMP4Stream;
1.78 + nsAutoPtr<PlatformDecoderModule> mPlatform;
1.79 +
1.80 + class DecoderCallback : public MediaDataDecoderCallback {
1.81 + public:
1.82 + DecoderCallback(MP4Reader* aReader,
1.83 + mp4_demuxer::TrackType aType)
1.84 + : mReader(aReader)
1.85 + , mType(aType)
1.86 + {
1.87 + }
1.88 + virtual void Output(MediaData* aSample) MOZ_OVERRIDE {
1.89 + mReader->Output(mType, aSample);
1.90 + }
1.91 + virtual void InputExhausted() MOZ_OVERRIDE {
1.92 + mReader->InputExhausted(mType);
1.93 + }
1.94 + virtual void Error() MOZ_OVERRIDE {
1.95 + mReader->Error(mType);
1.96 + }
1.97 + private:
1.98 + MP4Reader* mReader;
1.99 + mp4_demuxer::TrackType mType;
1.100 + };
1.101 +
1.102 + struct DecoderData {
1.103 + DecoderData(const char* aMonitorName,
1.104 + uint32_t aDecodeAhead)
1.105 + : mMonitor(aMonitorName)
1.106 + , mNumSamplesInput(0)
1.107 + , mNumSamplesOutput(0)
1.108 + , mDecodeAhead(aDecodeAhead)
1.109 + , mActive(false)
1.110 + , mInputExhausted(false)
1.111 + , mError(false)
1.112 + , mIsFlushing(false)
1.113 + {
1.114 + }
1.115 +
1.116 + // The platform decoder.
1.117 + RefPtr<MediaDataDecoder> mDecoder;
1.118 + // Queue of input extracted by the demuxer, but not yet sent to the
1.119 + // platform decoder.
1.120 + MP4SampleQueue mDemuxedSamples;
1.121 + // TaskQueue on which decoder can choose to decode.
1.122 + // Only non-null up until the decoder is created.
1.123 + RefPtr<MediaTaskQueue> mTaskQueue;
1.124 + // Callback that receives output and error notifications from the decoder.
1.125 + nsAutoPtr<DecoderCallback> mCallback;
1.126 + // Monitor that protects all non-threadsafe state; the primitives
1.127 + // that follow.
1.128 + Monitor mMonitor;
1.129 + uint64_t mNumSamplesInput;
1.130 + uint64_t mNumSamplesOutput;
1.131 + uint32_t mDecodeAhead;
1.132 + // Whether this stream exists in the media.
1.133 + bool mActive;
1.134 + bool mInputExhausted;
1.135 + bool mError;
1.136 + bool mIsFlushing;
1.137 + };
1.138 + DecoderData mAudio;
1.139 + DecoderData mVideo;
1.140 +
1.141 + // The last number of decoded output frames that we've reported to
1.142 + // MediaDecoder::NotifyDecoded(). We diff the number of output video
1.143 + // frames every time that DecodeVideoData() is called, and report the
1.144 + // delta there.
1.145 + uint64_t mLastReportedNumDecodedFrames;
1.146 +
1.147 + DecoderData& GetDecoderData(mp4_demuxer::TrackType aTrack);
1.148 + MP4SampleQueue& SampleQueue(mp4_demuxer::TrackType aTrack);
1.149 + MediaDataDecoder* Decoder(mp4_demuxer::TrackType aTrack);
1.150 +
1.151 + layers::LayersBackend mLayersBackendType;
1.152 +
1.153 +};
1.154 +
1.155 +} // namespace mozilla
1.156 +
1.157 +#endif
