forked from bartvdbraak/blender
219 lines
5.6 KiB
C++
219 lines
5.6 KiB
C++
/*
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-----------------------------------------------------------------------------
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This source file is part of VideoTexture library
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Copyright (c) 2007 The Zdeno Ash Miklas
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This program is free software; you can redistribute it and/or modify it under
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the terms of the GNU Lesser General Public License as published by the Free Software
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Foundation; either version 2 of the License, or (at your option) any later
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version.
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This program is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License along with
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this program; if not, write to the Free Software Foundation, Inc., 59 Temple
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Place - Suite 330, Boston, MA 02111-1307, USA, or go to
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http://www.gnu.org/copyleft/lesser.txt.
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-----------------------------------------------------------------------------
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*/
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/** \file VideoFFmpeg.h
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* \ingroup bgevideotex
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*/
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#ifndef VIDEOFFMPEG_H
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#define VIDEOFFMPEG_H
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#ifdef WITH_FFMPEG
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extern "C" {
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#undef __cplusplus
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#include <pthread.h>
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#include "ffmpeg_compat.h"
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#include "DNA_listBase.h"
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#include "BLI_threads.h"
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#include "BLI_blenlib.h"
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#define __cplusplus
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}
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#if LIBAVFORMAT_VERSION_INT < (49 << 16)
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#define FFMPEG_OLD_FRAME_RATE 1
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#else
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#define FFMPEG_CODEC_IS_POINTER 1
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#endif
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#if LIBAVFORMAT_VERSION_INT >= (52 << 16)
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#define FFMPEG_PB_IS_POINTER 1
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#endif
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#ifdef FFMPEG_CODEC_IS_POINTER
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static inline AVCodecContext* get_codec_from_stream(AVStream* stream)
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{
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return stream->codec;
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}
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#else
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static inline AVCodecContext* get_codec_from_stream(AVStream* stream)
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{
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return &stream->codec;
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}
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#endif
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#include "VideoBase.h"
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#define CACHE_FRAME_SIZE 10
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#define CACHE_PACKET_SIZE 30
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// type VideoFFmpeg declaration
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class VideoFFmpeg : public VideoBase
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{
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public:
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/// constructor
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VideoFFmpeg (HRESULT * hRslt);
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/// destructor
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virtual ~VideoFFmpeg ();
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/// set initial parameters
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void initParams (short width, short height, float rate, bool image=false);
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/// open video/image file
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virtual void openFile (char * file);
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/// open video capture device
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virtual void openCam (char * driver, short camIdx);
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/// release video source
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virtual bool release (void);
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/// play video
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virtual bool play (void);
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/// pause video
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virtual bool pause (void);
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/// stop video
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virtual bool stop (void);
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/// set play range
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virtual void setRange (double start, double stop);
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/// set frame rate
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virtual void setFrameRate (float rate);
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// some specific getters and setters
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int getPreseek(void) { return m_preseek; }
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void setPreseek(int preseek) { if (preseek >= 0) m_preseek = preseek; }
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bool getDeinterlace(void) { return m_deinterlace; }
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void setDeinterlace(bool deinterlace) { m_deinterlace = deinterlace; }
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char *getImageName(void) { return (m_isImage) ? m_imageName.Ptr() : NULL; }
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protected:
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// format and codec information
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AVCodec *m_codec;
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AVFormatContext *m_formatCtx;
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AVCodecContext *m_codecCtx;
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// raw frame extracted from video file
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AVFrame *m_frame;
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// deinterlaced frame if codec requires it
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AVFrame *m_frameDeinterlaced;
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// decoded RGB24 frame if codec requires it
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AVFrame *m_frameRGB;
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// conversion from raw to RGB is done with sws_scale
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struct SwsContext *m_imgConvertCtx;
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// should the codec be deinterlaced?
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bool m_deinterlace;
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// number of frame of preseek
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int m_preseek;
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// order number of stream holding the video in format context
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int m_videoStream;
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// the actual frame rate
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double m_baseFrameRate;
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/// last displayed frame
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long m_lastFrame;
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/// end of file reached
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bool m_eof;
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/// flag to indicate that time is coming from application
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bool m_externTime;
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/// current file pointer position in file expressed in frame number
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long m_curPosition;
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/// time of video play start
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double m_startTime;
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/// width of capture in pixel
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short m_captWidth;
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/// height of capture in pixel
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short m_captHeight;
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/// frame rate of capture in frames per seconds
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float m_captRate;
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/// is file an image?
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bool m_isImage;
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/// is image loading done in a separate thread?
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bool m_isThreaded;
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/// is streaming or camera?
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bool m_isStreaming;
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/// keep last image name
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STR_String m_imageName;
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/// image calculation
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virtual void calcImage (unsigned int texId, double ts);
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/// set actual position
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void setPositions (void);
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/// get actual framerate
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double actFrameRate (void) { return m_frameRate * m_baseFrameRate; }
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/// common function to video file and capture
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int openStream(const char *filename, AVInputFormat *inputFormat, AVFormatParameters *formatParams);
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/// check if a frame is available and load it in pFrame, return true if a frame could be retrieved
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AVFrame* grabFrame(long frame);
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/// in case of caching, put the frame back in free queue
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void releaseFrame(AVFrame* frame);
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/// start thread to load the video file/capture/stream
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bool startCache();
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void stopCache();
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private:
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typedef struct {
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Link link;
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long framePosition;
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AVFrame *frame;
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} CacheFrame;
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typedef struct {
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Link link;
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AVPacket packet;
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} CachePacket;
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bool m_stopThread;
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bool m_cacheStarted;
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ListBase m_thread;
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ListBase m_frameCacheBase; // list of frames that are ready
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ListBase m_frameCacheFree; // list of frames that are unused
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ListBase m_packetCacheBase; // list of packets that are ready for decoding
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ListBase m_packetCacheFree; // list of packets that are unused
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pthread_mutex_t m_cacheMutex;
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AVFrame *allocFrameRGB();
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static void *cacheThread(void *);
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};
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inline VideoFFmpeg * getFFmpeg (PyImage * self)
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{
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return static_cast<VideoFFmpeg*>(self->m_image);
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}
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#endif //WITH_FFMPEG
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#endif
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