/* 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/. */ #if !defined(GStreamerReader_h_) #define GStreamerReader_h_ #include #include #include #include // This include trips -Wreserved-user-defined-literal on clang. Ignoring it // trips -Wpragmas on GCC (unknown warning), but ignoring that trips // -Wunknown-pragmas on clang (unknown pragma). #pragma GCC diagnostic push #pragma GCC diagnostic ignored "-Wunknown-pragmas" #pragma GCC diagnostic ignored "-Wpragmas" #pragma GCC diagnostic ignored "-Wreserved-user-defined-literal" #include #pragma GCC diagnostic pop #include "MediaDecoderReader.h" #include "MP3FrameParser.h" #include "ImageContainer.h" #include "nsRect.h" namespace mozilla { namespace dom { class TimeRanges; } class AbstractMediaDecoder; class GStreamerReader : public MediaDecoderReader { typedef gfx::IntRect IntRect; public: explicit GStreamerReader(AbstractMediaDecoder* aDecoder); virtual ~GStreamerReader(); virtual nsresult Init(MediaDecoderReader* aCloneDonor); virtual nsresult ResetDecode(); virtual bool DecodeAudioData(); virtual bool DecodeVideoFrame(bool &aKeyframeSkip, int64_t aTimeThreshold); virtual nsresult ReadMetadata(MediaInfo* aInfo, MetadataTags** aTags); virtual void Seek(int64_t aTime, int64_t aStartTime, int64_t aEndTime, int64_t aCurrentTime); virtual nsresult GetBuffered(dom::TimeRanges* aBuffered); virtual void NotifyDataArrived(const char *aBuffer, uint32_t aLength, int64_t aOffset) MOZ_OVERRIDE; virtual bool HasAudio() { return mInfo.HasAudio(); } virtual bool HasVideo() { return mInfo.HasVideo(); } layers::ImageContainer* GetImageContainer() { return mDecoder->GetImageContainer(); } virtual bool IsMediaSeekable() MOZ_OVERRIDE; private: void ReadAndPushData(guint aLength); nsRefPtr GetImageFromBuffer(GstBuffer* aBuffer); void CopyIntoImageBuffer(GstBuffer *aBuffer, GstBuffer** aOutBuffer, nsRefPtr &image); GstCaps* BuildAudioSinkCaps(); void InstallPadCallbacks(); #if GST_VERSION_MAJOR >= 1 void ImageDataFromVideoFrame(GstVideoFrame *aFrame, layers::PlanarYCbCrImage::Data *aData); #endif /* Called once the pipeline is setup to check that the stream only contains * supported formats */ nsresult CheckSupportedFormats(); /* Gst callbacks */ static GstBusSyncReply ErrorCb(GstBus *aBus, GstMessage *aMessage, gpointer aUserData); GstBusSyncReply Error(GstBus *aBus, GstMessage *aMessage); /* Called on the source-setup signal emitted by playbin. Used to * configure appsrc . */ static void PlayBinSourceSetupCb(GstElement* aPlayBin, GParamSpec* pspec, gpointer aUserData); void PlayBinSourceSetup(GstAppSrc* aSource); /* Called from appsrc when we need to read more data from the resource */ static void NeedDataCb(GstAppSrc* aSrc, guint aLength, gpointer aUserData); void NeedData(GstAppSrc* aSrc, guint aLength); /* Called when appsrc has enough data and we can stop reading */ static void EnoughDataCb(GstAppSrc* aSrc, gpointer aUserData); void EnoughData(GstAppSrc* aSrc); /* Called when a seek is issued on the pipeline */ static gboolean SeekDataCb(GstAppSrc* aSrc, guint64 aOffset, gpointer aUserData); gboolean SeekData(GstAppSrc* aSrc, guint64 aOffset); /* Called when events reach the sinks. See inline comments */ #if GST_VERSION_MAJOR == 1 static GstPadProbeReturn EventProbeCb(GstPad *aPad, GstPadProbeInfo *aInfo, gpointer aUserData); GstPadProbeReturn EventProbe(GstPad *aPad, GstEvent *aEvent); #else static gboolean EventProbeCb(GstPad* aPad, GstEvent* aEvent, gpointer aUserData); gboolean EventProbe(GstPad* aPad, GstEvent* aEvent); #endif /* Called when the video part of the pipeline allocates buffers. Used to * provide PlanarYCbCrImage backed GstBuffers to the pipeline so that a memory * copy can be avoided when handling YUV buffers from the pipeline to the gfx * side. */ #if GST_VERSION_MAJOR == 1 static GstPadProbeReturn QueryProbeCb(GstPad *aPad, GstPadProbeInfo *aInfo, gpointer aUserData); GstPadProbeReturn QueryProbe(GstPad *aPad, GstPadProbeInfo *aInfo, gpointer aUserData); #else static GstFlowReturn AllocateVideoBufferCb(GstPad* aPad, guint64 aOffset, guint aSize, GstCaps* aCaps, GstBuffer** aBuf); GstFlowReturn AllocateVideoBufferFull(GstPad* aPad, guint64 aOffset, guint aSize, GstCaps* aCaps, GstBuffer** aBuf, nsRefPtr& aImage); GstFlowReturn AllocateVideoBuffer(GstPad* aPad, guint64 aOffset, guint aSize, GstCaps* aCaps, GstBuffer** aBuf); #endif /* Called when the pipeline is prerolled, that is when at start or after a * seek, the first audio and video buffers are queued in the sinks. */ static GstFlowReturn NewPrerollCb(GstAppSink* aSink, gpointer aUserData); void VideoPreroll(); void AudioPreroll(); /* Called when buffers reach the sinks */ static GstFlowReturn NewBufferCb(GstAppSink* aSink, gpointer aUserData); void NewVideoBuffer(); void NewAudioBuffer(); /* Called at end of stream, when decoding has finished */ static void EosCb(GstAppSink* aSink, gpointer aUserData); /* Notifies that a sink will no longer receive any more data. If nullptr * is passed to this, we'll assume all streams have reached EOS (for example * an error has occurred). */ void Eos(GstAppSink* aSink = nullptr); /* Called when an element is added inside playbin. We use it to find the * decodebin instance. */ static void PlayElementAddedCb(GstBin *aBin, GstElement *aElement, gpointer *aUserData); /* Called during decoding, to decide whether a (sub)stream should be decoded or * ignored */ static bool ShouldAutoplugFactory(GstElementFactory* aFactory, GstCaps* aCaps); /* Called by decodebin during autoplugging. We use it to apply our * container/codec whitelist. */ static GValueArray* AutoplugSortCb(GstElement* aElement, GstPad* aPad, GstCaps* aCaps, GValueArray* aFactories); // Try to find MP3 headers in this stream using our MP3 frame parser. nsresult ParseMP3Headers(); // Get the length of the stream, excluding any metadata we have ignored at the // start of the stream: ID3 headers, for example. int64_t GetDataLength(); // Use our own MP3 parser here, largely for consistency with other platforms. MP3FrameParser mMP3FrameParser; // The byte position in the stream where the actual media (ignoring, for // example, ID3 tags) starts. uint64_t mDataOffset; // We want to be able to decide in |ReadMetadata| whether or not we use the // duration from the MP3 frame parser, as this backend supports more than just // MP3. But |NotifyDataArrived| can update the duration and is often called // _before_ |ReadMetadata|. This flag stops the former from using the parser // duration until we are sure we want to. bool mUseParserDuration; int64_t mLastParserDuration; #if GST_VERSION_MAJOR >= 1 GstAllocator *mAllocator; GstBufferPool *mBufferPool; GstVideoInfo mVideoInfo; #endif GstElement* mPlayBin; GstBus* mBus; GstAppSrc* mSource; /* video sink bin */ GstElement* mVideoSink; /* the actual video app sink */ GstAppSink* mVideoAppSink; /* audio sink bin */ GstElement* mAudioSink; /* the actual audio app sink */ GstAppSink* mAudioAppSink; GstVideoFormat mFormat; IntRect mPicture; int mVideoSinkBufferCount; int mAudioSinkBufferCount; GstAppSrcCallbacks mSrcCallbacks; GstAppSinkCallbacks mSinkCallbacks; /* monitor used to synchronize access to shared state between gstreamer * threads and other gecko threads */ ReentrantMonitor mGstThreadsMonitor; /* video and audio segments we use to convert absolute timestamps to [0, * stream_duration]. They're set when the pipeline is started or after a seek. * Concurrent access guarded with mGstThreadsMonitor. */ GstSegment mVideoSegment; GstSegment mAudioSegment; /* bool used to signal when gst has detected the end of stream and * DecodeAudioData and DecodeVideoFrame should not expect any more data */ bool mReachedAudioEos; bool mReachedVideoEos; #if GST_VERSION_MAJOR >= 1 bool mConfigureAlignment; #endif int fpsNum; int fpsDen; }; } // namespace mozilla #endif