mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
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135 lines
4.4 KiB
C
135 lines
4.4 KiB
C
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this file,
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* You can obtain one at http://mozilla.org/MPL/2.0/. */
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#if !defined(nsGStreamerReader_h_)
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#define nsGStreamerReader_h_
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#include <gst/gst.h>
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#include <gst/app/gstappsrc.h>
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#include <gst/app/gstappsink.h>
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#include <gst/video/video.h>
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#include "nsBuiltinDecoderReader.h"
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using namespace mozilla;
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class nsMediaDecoder;
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class nsTimeRanges;
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class nsGStreamerReader : public nsBuiltinDecoderReader
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{
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public:
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nsGStreamerReader(nsBuiltinDecoder* aDecoder);
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virtual ~nsGStreamerReader();
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virtual nsresult Init(nsBuiltinDecoderReader* aCloneDonor);
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virtual nsresult ResetDecode();
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virtual bool DecodeAudioData();
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virtual bool DecodeVideoFrame(bool &aKeyframeSkip,
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PRInt64 aTimeThreshold);
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virtual nsresult ReadMetadata(nsVideoInfo* aInfo);
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virtual nsresult Seek(PRInt64 aTime,
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PRInt64 aStartTime,
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PRInt64 aEndTime,
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PRInt64 aCurrentTime);
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virtual nsresult GetBuffered(nsTimeRanges* aBuffered, PRInt64 aStartTime);
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virtual bool HasAudio() {
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return mInfo.mHasAudio;
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}
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virtual bool HasVideo() {
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return mInfo.mHasVideo;
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}
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private:
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void ReadAndPushData(guint aLength);
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bool WaitForDecodedData(int *counter);
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void NotifyBytesConsumed();
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PRInt64 QueryDuration();
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/* Gst callbacks */
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/* Called on the source-setup signal emitted by playbin. Used to
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* configure appsrc .
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*/
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static void PlayBinSourceSetupCb(GstElement *aPlayBin,
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GstElement *aSource,
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gpointer aUserData);
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void PlayBinSourceSetup(GstAppSrc *aSource);
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/* Called from appsrc when we need to read more data from the resource */
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static void NeedDataCb(GstAppSrc *aSrc, guint aLength, gpointer aUserData);
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void NeedData(GstAppSrc *aSrc, guint aLength);
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/* Called when appsrc has enough data and we can stop reading */
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static void EnoughDataCb(GstAppSrc *aSrc, gpointer aUserData);
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void EnoughData(GstAppSrc *aSrc);
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/* Called when a seek is issued on the pipeline */
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static gboolean SeekDataCb(GstAppSrc *aSrc,
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guint64 aOffset,
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gpointer aUserData);
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gboolean SeekData(GstAppSrc *aSrc, guint64 aOffset);
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/* Called when events reach the sinks. See inline comments */
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static gboolean EventProbeCb(GstPad *aPad, GstEvent *aEvent, gpointer aUserData);
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gboolean EventProbe(GstPad *aPad, GstEvent *aEvent);
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/* Called when the pipeline is prerolled, that is when at start or after a
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* seek, the first audio and video buffers are queued in the sinks.
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*/
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static GstFlowReturn NewPrerollCb(GstAppSink *aSink, gpointer aUserData);
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void VideoPreroll();
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void AudioPreroll();
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/* Called when buffers reach the sinks */
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static GstFlowReturn NewBufferCb(GstAppSink *aSink, gpointer aUserData);
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void NewVideoBuffer();
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void NewAudioBuffer();
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/* Called at end of stream, when decoding has finished */
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static void EosCb(GstAppSink *aSink, gpointer aUserData);
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void Eos(GstAppSink *aSink);
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GstElement *mPlayBin;
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GstBus *mBus;
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GstAppSrc *mSource;
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/* video sink bin */
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GstElement *mVideoSink;
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/* the actual video app sink */
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GstAppSink *mVideoAppSink;
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/* audio sink bin */
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GstElement *mAudioSink;
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/* the actual audio app sink */
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GstAppSink *mAudioAppSink;
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GstVideoFormat mFormat;
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nsIntRect mPicture;
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int mVideoSinkBufferCount;
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int mAudioSinkBufferCount;
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GstAppSrcCallbacks mSrcCallbacks;
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GstAppSinkCallbacks mSinkCallbacks;
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/* monitor used to synchronize access to shared state between gstreamer
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* threads and other gecko threads */
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mozilla::ReentrantMonitor mGstThreadsMonitor;
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/* video and audio segments we use to convert absolute timestamps to [0,
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* stream_duration]. They're set when the pipeline is started or after a seek.
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* Concurrent access guarded with mGstThreadsMonitor.
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*/
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GstSegment mVideoSegment;
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GstSegment mAudioSegment;
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/* bool used to signal when gst has detected the end of stream and
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* DecodeAudioData and DecodeVideoFrame should not expect any more data
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*/
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bool mReachedEos;
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/* offset we've reached reading from the source */
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gint64 mByteOffset;
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/* the last offset we reported with NotifyBytesConsumed */
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gint64 mLastReportedByteOffset;
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int fpsNum;
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int fpsDen;
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};
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#endif
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