diff options
Diffstat (limited to 'src/Classes/UVideo.pas')
| -rw-r--r-- | src/Classes/UVideo.pas | 828 |
1 files changed, 0 insertions, 828 deletions
diff --git a/src/Classes/UVideo.pas b/src/Classes/UVideo.pas deleted file mode 100644 index 0ab1d350..00000000 --- a/src/Classes/UVideo.pas +++ /dev/null @@ -1,828 +0,0 @@ -{############################################################################## - # FFmpeg support for UltraStar deluxe # - # # - # Created by b1indy # - # based on 'An ffmpeg and SDL Tutorial' (http://www.dranger.com/ffmpeg/) # - # with modifications by Jay Binks <jaybinks@gmail.com> # - # # - # http://www.mail-archive.com/fpc-pascal@lists.freepascal.org/msg09949.html # - # http://www.nabble.com/file/p11795857/mpegpas01.zip # - # # - ##############################################################################} - -unit UVideo; - -// uncomment if you want to see the debug stuff -{.$define DebugDisplay} -{.$define DebugFrames} -{.$define VideoBenchmark} -{.$define Info} - -interface - -{$IFDEF FPC} - {$MODE Delphi} -{$ENDIF} - -{$I switches.inc} - -// use BGR-format for accelerated colorspace conversion with swscale -{$IFDEF UseSWScale} - {$DEFINE PIXEL_FMT_BGR} -{$ENDIF} - -implementation - -uses - SDL, - textgl, - avcodec, - avformat, - avutil, - avio, - rational, - {$IFDEF UseSWScale} - swscale, - {$ENDIF} - UMediaCore_FFmpeg, - math, - gl, - glext, - SysUtils, - UCommon, - UConfig, - ULog, - UMusic, - UGraphicClasses, - UGraphic; - -const -{$IFDEF PIXEL_FMT_BGR} - PIXEL_FMT_OPENGL = GL_BGR; - PIXEL_FMT_FFMPEG = PIX_FMT_BGR24; -{$ELSE} - PIXEL_FMT_OPENGL = GL_RGB; - PIXEL_FMT_FFMPEG = PIX_FMT_RGB24; -{$ENDIF} - -type - TVideoPlayback_FFmpeg = class( TInterfacedObject, IVideoPlayback ) - private - fVideoOpened, - fVideoPaused: Boolean; - - VideoStream: PAVStream; - VideoStreamIndex : Integer; - VideoFormatContext: PAVFormatContext; - VideoCodecContext: PAVCodecContext; - VideoCodec: PAVCodec; - - AVFrame: PAVFrame; - AVFrameRGB: PAVFrame; - FrameBuffer: PByte; - - {$IFDEF UseSWScale} - SoftwareScaleContext: PSwsContext; - {$ENDIF} - - fVideoTex: GLuint; - TexWidth, TexHeight: Cardinal; - - VideoAspect: Real; - VideoTimeBase, VideoTime: Extended; - fLoopTime: Extended; - - EOF: boolean; - Loop: boolean; - - Initialized: boolean; - - procedure Reset(); - function DecodeFrame(var AVPacket: TAVPacket; out pts: double): boolean; - procedure SynchronizeVideo(Frame: PAVFrame; var pts: double); - public - function GetName: String; - - function Init(): boolean; - function Finalize: boolean; - - function Open(const aFileName : string): boolean; // true if succeed - procedure Close; - - procedure Play; - procedure Pause; - procedure Stop; - - procedure SetPosition(Time: real); - function GetPosition: real; - - procedure GetFrame(Time: Extended); - procedure DrawGL(Screen: integer); - end; - -var - FFmpegCore: TMediaCore_FFmpeg; - - -// These are called whenever we allocate a frame buffer. -// We use this to store the global_pts in a frame at the time it is allocated. -function PtsGetBuffer(CodecCtx: PAVCodecContext; Frame: PAVFrame): integer; cdecl; -var - pts: Pint64; - VideoPktPts: Pint64; -begin - Result := avcodec_default_get_buffer(CodecCtx, Frame); - VideoPktPts := CodecCtx^.opaque; - if (VideoPktPts <> nil) then - begin - // Note: we must copy the pts instead of passing a pointer, because the packet - // (and with it the pts) might change before a frame is returned by av_decode_video. - pts := av_malloc(sizeof(int64)); - pts^ := VideoPktPts^; - Frame^.opaque := pts; - end; -end; - -procedure PtsReleaseBuffer(CodecCtx: PAVCodecContext; Frame: PAVFrame); cdecl; -begin - if (Frame <> nil) then - av_freep(@Frame^.opaque); - avcodec_default_release_buffer(CodecCtx, Frame); -end; - - -{*------------------------------------------------------------------------------ - * TVideoPlayback_ffmpeg - *------------------------------------------------------------------------------} - -function TVideoPlayback_FFmpeg.GetName: String; -begin - result := 'FFmpeg_Video'; -end; - -function TVideoPlayback_FFmpeg.Init(): boolean; -begin - Result := true; - - if (Initialized) then - Exit; - Initialized := true; - - FFmpegCore := TMediaCore_FFmpeg.GetInstance(); - - Reset(); - av_register_all(); - glGenTextures(1, PGLuint(@fVideoTex)); -end; - -function TVideoPlayback_FFmpeg.Finalize(): boolean; -begin - Close(); - glDeleteTextures(1, PGLuint(@fVideoTex)); - Result := true; -end; - -procedure TVideoPlayback_FFmpeg.Reset(); -begin - // close previously opened video - Close(); - - fVideoOpened := False; - fVideoPaused := False; - VideoTimeBase := 0; - VideoTime := 0; - VideoStream := nil; - VideoStreamIndex := -1; - - EOF := false; - - // TODO: do we really want this by default? - Loop := true; - fLoopTime := 0; -end; - -function TVideoPlayback_FFmpeg.Open(const aFileName : string): boolean; // true if succeed -var - errnum: Integer; - AudioStreamIndex: integer; -begin - Result := false; - - Reset(); - - errnum := av_open_input_file(VideoFormatContext, PChar(aFileName), nil, 0, nil); - if (errnum <> 0) then - begin - Log.LogError('Failed to open file "'+aFileName+'" ('+FFmpegCore.GetErrorString(errnum)+')'); - Exit; - end; - - // update video info - if (av_find_stream_info(VideoFormatContext) < 0) then - begin - Log.LogError('No stream info found', 'TVideoPlayback_ffmpeg.Open'); - Close(); - Exit; - end; - Log.LogInfo('VideoStreamIndex : ' + inttostr(VideoStreamIndex), 'TVideoPlayback_ffmpeg.Open'); - - // find video stream - FFmpegCore.FindStreamIDs(VideoFormatContext, VideoStreamIndex, AudioStreamIndex); - if (VideoStreamIndex < 0) then - begin - Log.LogError('No video stream found', 'TVideoPlayback_ffmpeg.Open'); - Close(); - Exit; - end; - - VideoStream := VideoFormatContext^.streams[VideoStreamIndex]; - VideoCodecContext := VideoStream^.codec; - - VideoCodec := avcodec_find_decoder(VideoCodecContext^.codec_id); - if (VideoCodec = nil) then - begin - Log.LogError('No matching codec found', 'TVideoPlayback_ffmpeg.Open'); - Close(); - Exit; - end; - - // set debug options - VideoCodecContext^.debug_mv := 0; - VideoCodecContext^.debug := 0; - - // detect bug-workarounds automatically - VideoCodecContext^.workaround_bugs := FF_BUG_AUTODETECT; - // error resilience strategy (careful/compliant/agressive/very_aggressive) - //VideoCodecContext^.error_resilience := FF_ER_CAREFUL; //FF_ER_COMPLIANT; - // allow non spec compliant speedup tricks. - //VideoCodecContext^.flags2 := VideoCodecContext^.flags2 or CODEC_FLAG2_FAST; - - // Note: avcodec_open() and avcodec_close() are not thread-safe and will - // fail if called concurrently by different threads. - FFmpegCore.LockAVCodec(); - try - errnum := avcodec_open(VideoCodecContext, VideoCodec); - finally - FFmpegCore.UnlockAVCodec(); - end; - if (errnum < 0) then - begin - Log.LogError('No matching codec found', 'TVideoPlayback_ffmpeg.Open'); - Close(); - Exit; - end; - - // register custom callbacks for pts-determination - VideoCodecContext^.get_buffer := PtsGetBuffer; - VideoCodecContext^.release_buffer := PtsReleaseBuffer; - - {$ifdef DebugDisplay} - DebugWriteln('Found a matching Codec: '+ VideoCodecContext^.Codec.Name + sLineBreak + - sLineBreak + - ' Width = '+inttostr(VideoCodecContext^.width) + - ', Height='+inttostr(VideoCodecContext^.height) + sLineBreak + - ' Aspect : '+inttostr(VideoCodecContext^.sample_aspect_ratio.num) + '/' + - inttostr(VideoCodecContext^.sample_aspect_ratio.den) + sLineBreak + - ' Framerate : '+inttostr(VideoCodecContext^.time_base.num) + '/' + - inttostr(VideoCodecContext^.time_base.den)); - {$endif} - - // allocate space for decoded frame and rgb frame - AVFrame := avcodec_alloc_frame(); - AVFrameRGB := avcodec_alloc_frame(); - FrameBuffer := av_malloc(avpicture_get_size(PIXEL_FMT_FFMPEG, - VideoCodecContext^.width, VideoCodecContext^.height)); - - if ((AVFrame = nil) or (AVFrameRGB = nil) or (FrameBuffer = nil)) then - begin - Log.LogError('Failed to allocate buffers', 'TVideoPlayback_ffmpeg.Open'); - Close(); - Exit; - end; - - // TODO: pad data for OpenGL to GL_UNPACK_ALIGNMENT - // (otherwise video will be distorted if width/height is not a multiple of the alignment) - errnum := avpicture_fill(PAVPicture(AVFrameRGB), FrameBuffer, PIXEL_FMT_FFMPEG, - VideoCodecContext^.width, VideoCodecContext^.height); - if (errnum < 0) then - begin - Log.LogError('avpicture_fill failed: ' + FFmpegCore.GetErrorString(errnum), 'TVideoPlayback_ffmpeg.Open'); - Close(); - Exit; - end; - - // calculate some information for video display - VideoAspect := av_q2d(VideoCodecContext^.sample_aspect_ratio); - if (VideoAspect = 0) then - VideoAspect := VideoCodecContext^.width / - VideoCodecContext^.height - else - VideoAspect := VideoAspect * VideoCodecContext^.width / - VideoCodecContext^.height; - - VideoTimeBase := 1/av_q2d(VideoStream^.r_frame_rate); - - // hack to get reasonable timebase (for divx and others) - if (VideoTimeBase < 0.02) then // 0.02 <-> 50 fps - begin - VideoTimeBase := av_q2d(VideoStream^.r_frame_rate); - while (VideoTimeBase > 50) do - VideoTimeBase := VideoTimeBase/10; - VideoTimeBase := 1/VideoTimeBase; - end; - - Log.LogInfo('VideoTimeBase: ' + floattostr(VideoTimeBase), 'TVideoPlayback_ffmpeg.Open'); - Log.LogInfo('Framerate: '+inttostr(floor(1/VideoTimeBase))+'fps', 'TVideoPlayback_ffmpeg.Open'); - - {$IFDEF UseSWScale} - // if available get a SWScale-context -> faster than the deprecated img_convert(). - // SWScale has accelerated support for PIX_FMT_RGB32/PIX_FMT_BGR24/PIX_FMT_BGR565/PIX_FMT_BGR555. - // Note: PIX_FMT_RGB32 is a BGR- and not an RGB-format (maybe a bug)!!! - // The BGR565-formats (GL_UNSIGNED_SHORT_5_6_5) is way too slow because of its - // bad OpenGL support. The BGR formats have MMX(2) implementations but no speed-up - // could be observed in comparison to the RGB versions. - SoftwareScaleContext := sws_getContext( - VideoCodecContext^.width, VideoCodecContext^.height, - integer(VideoCodecContext^.pix_fmt), - VideoCodecContext^.width, VideoCodecContext^.height, - integer(PIXEL_FMT_FFMPEG), - SWS_FAST_BILINEAR, nil, nil, nil); - if (SoftwareScaleContext = nil) then - begin - Log.LogError('Failed to get swscale context', 'TVideoPlayback_ffmpeg.Open'); - Close(); - Exit; - end; - {$ENDIF} - - TexWidth := Round(Power(2, Ceil(Log2(VideoCodecContext^.width)))); - TexHeight := Round(Power(2, Ceil(Log2(VideoCodecContext^.height)))); - - // we retrieve a texture just once with glTexImage2D and update it with glTexSubImage2D later. - // Benefits: glTexSubImage2D is faster and supports non-power-of-two widths/height. - glBindTexture(GL_TEXTURE_2D, fVideoTex); - glTexEnvi(GL_TEXTURE_2D, GL_TEXTURE_ENV_MODE, GL_REPLACE); - glTexImage2D(GL_TEXTURE_2D, 0, 3, TexWidth, TexHeight, 0, - PIXEL_FMT_OPENGL, GL_UNSIGNED_BYTE, nil); - glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); - glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); - - - fVideoOpened := True; - - Result := true; -end; - -procedure TVideoPlayback_FFmpeg.Close; -begin - if (FrameBuffer <> nil) then - av_free(FrameBuffer); - if (AVFrameRGB <> nil) then - av_free(AVFrameRGB); - if (AVFrame <> nil) then - av_free(AVFrame); - - AVFrame := nil; - AVFrameRGB := nil; - FrameBuffer := nil; - - if (VideoCodecContext <> nil) then - begin - // avcodec_close() is not thread-safe - FFmpegCore.LockAVCodec(); - try - avcodec_close(VideoCodecContext); - finally - FFmpegCore.UnlockAVCodec(); - end; - end; - - if (VideoFormatContext <> nil) then - av_close_input_file(VideoFormatContext); - - VideoCodecContext := nil; - VideoFormatContext := nil; - - fVideoOpened := False; -end; - -procedure TVideoPlayback_FFmpeg.SynchronizeVideo(Frame: PAVFrame; var pts: double); -var - FrameDelay: double; -begin - if (pts <> 0) then - begin - // if we have pts, set video clock to it - VideoTime := pts; - end else - begin - // if we aren't given a pts, set it to the clock - pts := VideoTime; - end; - // update the video clock - FrameDelay := av_q2d(VideoCodecContext^.time_base); - // if we are repeating a frame, adjust clock accordingly - FrameDelay := FrameDelay + Frame^.repeat_pict * (FrameDelay * 0.5); - VideoTime := VideoTime + FrameDelay; -end; - -function TVideoPlayback_FFmpeg.DecodeFrame(var AVPacket: TAVPacket; out pts: double): boolean; -var - FrameFinished: Integer; - VideoPktPts: int64; - pbIOCtx: PByteIOContext; - errnum: integer; -begin - Result := false; - FrameFinished := 0; - - if EOF then - Exit; - - // read packets until we have a finished frame (or there are no more packets) - while (FrameFinished = 0) do - begin - errnum := av_read_frame(VideoFormatContext, AVPacket); - if (errnum < 0) then - begin - // failed to read a frame, check reason - - {$IF (LIBAVFORMAT_VERSION_MAJOR >= 52)} - pbIOCtx := VideoFormatContext^.pb; - {$ELSE} - pbIOCtx := @VideoFormatContext^.pb; - {$IFEND} - - // check for end-of-file (eof is not an error) - if (url_feof(pbIOCtx) <> 0) then - begin - EOF := true; - Exit; - end; - - // check for errors - if (url_ferror(pbIOCtx) <> 0) then - Exit; - - // url_feof() does not detect an EOF for some mov-files (e.g. deluxe.mov) - // so we have to do it this way. - if ((VideoFormatContext^.file_size <> 0) and - (pbIOCtx^.pos >= VideoFormatContext^.file_size)) then - begin - EOF := true; - Exit; - end; - - // no error -> wait for user input - SDL_Delay(100); - continue; - end; - - // if we got a packet from the video stream, then decode it - if (AVPacket.stream_index = VideoStreamIndex) then - begin - // save pts to be stored in pFrame in first call of PtsGetBuffer() - VideoPktPts := AVPacket.pts; - VideoCodecContext^.opaque := @VideoPktPts; - - // decode packet - avcodec_decode_video(VideoCodecContext, AVFrame, - frameFinished, AVPacket.data, AVPacket.size); - - // reset opaque data - VideoCodecContext^.opaque := nil; - - // update pts - if (AVPacket.dts <> AV_NOPTS_VALUE) then - begin - pts := AVPacket.dts; - end - else if ((AVFrame^.opaque <> nil) and - (Pint64(AVFrame^.opaque)^ <> AV_NOPTS_VALUE)) then - begin - pts := Pint64(AVFrame^.opaque)^; - end - else - begin - pts := 0; - end; - pts := pts * av_q2d(VideoStream^.time_base); - - // synchronize on each complete frame - if (frameFinished <> 0) then - SynchronizeVideo(AVFrame, pts); - end; - - // free the packet from av_read_frame - av_free_packet( @AVPacket ); - end; - - Result := true; -end; - -procedure TVideoPlayback_FFmpeg.GetFrame(Time: Extended); -var - AVPacket: TAVPacket; - errnum: Integer; - myTime: Extended; - TimeDifference: Extended; - DropFrameCount: Integer; - pts: double; - i: Integer; -const - FRAME_DROPCOUNT = 3; -begin - if not fVideoOpened then - Exit; - - if fVideoPaused then - Exit; - - // current time, relative to last loop (if any) - myTime := Time - fLoopTime; - // time since the last frame was returned - TimeDifference := myTime - VideoTime; - - {$IFDEF DebugDisplay} - DebugWriteln('Time: '+inttostr(floor(Time*1000)) + sLineBreak + - 'VideoTime: '+inttostr(floor(VideoTime*1000)) + sLineBreak + - 'TimeBase: '+inttostr(floor(VideoTimeBase*1000)) + sLineBreak + - 'TimeDiff: '+inttostr(floor(TimeDifference*1000))); - {$endif} - - // check if a new frame is needed - if (VideoTime <> 0) and (TimeDifference < VideoTimeBase) then - begin - {$ifdef DebugFrames} - // frame delay debug display - GoldenRec.Spawn(200,15,1,16,0,-1,ColoredStar,$00ff00); - {$endif} - - {$IFDEF DebugDisplay} - DebugWriteln('not getting new frame' + sLineBreak + - 'Time: '+inttostr(floor(Time*1000)) + sLineBreak + - 'VideoTime: '+inttostr(floor(VideoTime*1000)) + sLineBreak + - 'TimeBase: '+inttostr(floor(VideoTimeBase*1000)) + sLineBreak + - 'TimeDiff: '+inttostr(floor(TimeDifference*1000))); - {$endif} - - // we do not need a new frame now - Exit; - end; - - // update video-time to the next frame - VideoTime := VideoTime + VideoTimeBase; - TimeDifference := myTime - VideoTime; - - // check if we have to skip frames - if (TimeDifference >= FRAME_DROPCOUNT*VideoTimeBase) then - begin - {$IFDEF DebugFrames} - //frame drop debug display - GoldenRec.Spawn(200,55,1,16,0,-1,ColoredStar,$ff0000); - {$ENDIF} - {$IFDEF DebugDisplay} - DebugWriteln('skipping frames' + sLineBreak + - 'TimeBase: '+inttostr(floor(VideoTimeBase*1000)) + sLineBreak + - 'TimeDiff: '+inttostr(floor(TimeDifference*1000))); - {$endif} - - // update video-time - DropFrameCount := Trunc(TimeDifference / VideoTimeBase); - VideoTime := VideoTime + DropFrameCount*VideoTimeBase; - - // skip half of the frames, this is much smoother than to skip all at once - for i := 1 to DropFrameCount (*div 2*) do - DecodeFrame(AVPacket, pts); - end; - - {$IFDEF VideoBenchmark} - Log.BenchmarkStart(15); - {$ENDIF} - - if (not DecodeFrame(AVPacket, pts)) then - begin - if Loop then - begin - // Record the time we looped. This is used to keep the loops in time. otherwise they speed - SetPosition(0); - fLoopTime := Time; - end; - Exit; - end; - - // TODO: support for pan&scan - //if (AVFrame.pan_scan <> nil) then - //begin - // Writeln(Format('PanScan: %d/%d', [AVFrame.pan_scan.width, AVFrame.pan_scan.height])); - //end; - - // otherwise we convert the pixeldata from YUV to RGB - {$IFDEF UseSWScale} - errnum := sws_scale(SoftwareScaleContext, @(AVFrame.data), @(AVFrame.linesize), - 0, VideoCodecContext^.Height, - @(AVFrameRGB.data), @(AVFrameRGB.linesize)); - {$ELSE} - errnum := img_convert(PAVPicture(AVFrameRGB), PIXEL_FMT_FFMPEG, - PAVPicture(AVFrame), VideoCodecContext^.pix_fmt, - VideoCodecContext^.width, VideoCodecContext^.height); - {$ENDIF} - - if (errnum < 0) then - begin - Log.LogError('Image conversion failed', 'TVideoPlayback_ffmpeg.GetFrame'); - Exit; - end; - - {$IFDEF VideoBenchmark} - Log.BenchmarkEnd(15); - Log.BenchmarkStart(16); - {$ENDIF} - - // TODO: data is not padded, so we will need to tell OpenGL. - // Or should we add padding with avpicture_fill? (check which one is faster) - //glPixelStorei(GL_UNPACK_ALIGNMENT, 1); - - glBindTexture(GL_TEXTURE_2D, fVideoTex); - glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, - VideoCodecContext^.width, VideoCodecContext^.height, - PIXEL_FMT_OPENGL, GL_UNSIGNED_BYTE, AVFrameRGB^.data[0]); - - {$ifdef DebugFrames} - //frame decode debug display - GoldenRec.Spawn(200, 35, 1, 16, 0, -1, ColoredStar, $ffff00); - {$endif} - - {$IFDEF VideoBenchmark} - Log.BenchmarkEnd(16); - Log.LogBenchmark('FFmpeg', 15); - Log.LogBenchmark('Texture', 16); - {$ENDIF} -end; - -procedure TVideoPlayback_FFmpeg.DrawGL(Screen: integer); -var - TexVideoRightPos, TexVideoLowerPos: Single; - ScreenLeftPos, ScreenRightPos: Single; - ScreenUpperPos, ScreenLowerPos: Single; - ScaledVideoWidth, ScaledVideoHeight: Single; - ScreenMidPosX, ScreenMidPosY: Single; - ScreenAspect: Single; -begin - // have a nice black background to draw on (even if there were errors opening the vid) - if (Screen = 1) then - begin - glClearColor(0, 0, 0, 0); - glClear(GL_COLOR_BUFFER_BIT or GL_DEPTH_BUFFER_BIT); - end; - - // exit if there's nothing to draw - if (not fVideoOpened) then - Exit; - - {$IFDEF VideoBenchmark} - Log.BenchmarkStart(15); - {$ENDIF} - - // TODO: add a SetAspectCorrectionMode() function so we can switch - // aspect correction. The screens video backgrounds look very ugly with aspect - // correction because of the white bars at the top and bottom. - - ScreenAspect := ScreenW / ScreenH; - ScaledVideoWidth := RenderW; - ScaledVideoHeight := RenderH * ScreenAspect/VideoAspect; - - // Note: Scaling the width does not look good because the video might contain - // black borders at the top already - //ScaledVideoHeight := RenderH; - //ScaledVideoWidth := RenderW * VideoAspect/ScreenAspect; - - // center the video - ScreenMidPosX := RenderW/2; - ScreenMidPosY := RenderH/2; - ScreenLeftPos := ScreenMidPosX - ScaledVideoWidth/2; - ScreenRightPos := ScreenMidPosX + ScaledVideoWidth/2; - ScreenUpperPos := ScreenMidPosY - ScaledVideoHeight/2; - ScreenLowerPos := ScreenMidPosY + ScaledVideoHeight/2; - // the video-texture contains empty borders because its width and height must be - // a power of 2. So we have to determine the texture coords of the video. - TexVideoRightPos := VideoCodecContext^.width / TexWidth; - TexVideoLowerPos := VideoCodecContext^.height / TexHeight; - - // we could use blending for brightness control, but do we need this? - glDisable(GL_BLEND); - - // TODO: disable other stuff like lightning, etc. - - glEnable(GL_TEXTURE_2D); - glBindTexture(GL_TEXTURE_2D, fVideoTex); - glColor3f(1, 1, 1); - glBegin(GL_QUADS); - // upper-left coord - glTexCoord2f(0, 0); - glVertex2f(ScreenLeftPos, ScreenUpperPos); - // lower-left coord - glTexCoord2f(0, TexVideoLowerPos); - glVertex2f(ScreenLeftPos, ScreenLowerPos); - // lower-right coord - glTexCoord2f(TexVideoRightPos, TexVideoLowerPos); - glVertex2f(ScreenRightPos, ScreenLowerPos); - // upper-right coord - glTexCoord2f(TexVideoRightPos, 0); - glVertex2f(ScreenRightPos, ScreenUpperPos); - glEnd; - glDisable(GL_TEXTURE_2D); - - {$IFDEF VideoBenchmark} - Log.BenchmarkEnd(15); - Log.LogBenchmark('DrawGL', 15); - {$ENDIF} - - {$IFDEF Info} - if (fVideoSkipTime+VideoTime+VideoTimeBase < 0) then - begin - glColor4f(0.7, 1, 0.3, 1); - SetFontStyle (1); - SetFontItalic(False); - SetFontSize(9); - SetFontPos (300, 0); - glPrint('Delay due to negative VideoGap'); - glColor4f(1, 1, 1, 1); - end; - {$ENDIF} - - {$IFDEF DebugFrames} - glColor4f(0, 0, 0, 0.2); - glbegin(GL_QUADS); - glVertex2f(0, 0); - glVertex2f(0, 70); - glVertex2f(250, 70); - glVertex2f(250, 0); - glEnd; - - glColor4f(1, 1, 1, 1); - SetFontStyle (1); - SetFontItalic(False); - SetFontSize(9); - SetFontPos (5, 0); - glPrint('delaying frame'); - SetFontPos (5, 20); - glPrint('fetching frame'); - SetFontPos (5, 40); - glPrint('dropping frame'); - {$ENDIF} -end; - -procedure TVideoPlayback_FFmpeg.Play; -begin -end; - -procedure TVideoPlayback_FFmpeg.Pause; -begin - fVideoPaused := not fVideoPaused; -end; - -procedure TVideoPlayback_FFmpeg.Stop; -begin -end; - -procedure TVideoPlayback_FFmpeg.SetPosition(Time: real); -var - SeekFlags: integer; -begin - if not fVideoOpened then - Exit; - - if (Time < 0) then - Time := 0; - - // TODO: handle loop-times - //Time := Time mod VideoDuration; - - // backward seeking might fail without AVSEEK_FLAG_BACKWARD - SeekFlags := AVSEEK_FLAG_ANY; - if (Time < VideoTime) then - SeekFlags := SeekFlags or AVSEEK_FLAG_BACKWARD; - - VideoTime := Time; - EOF := false; - - if (av_seek_frame(VideoFormatContext, VideoStreamIndex, Floor(Time/VideoTimeBase), SeekFlags) < 0) then - begin - Log.LogError('av_seek_frame() failed', 'TVideoPlayback_ffmpeg.SetPosition'); - Exit; - end; - - avcodec_flush_buffers(VideoCodecContext); -end; - -function TVideoPlayback_FFmpeg.GetPosition: real; -begin - // TODO: return video-position in seconds - Result := VideoTime; -end; - -initialization - MediaManager.Add(TVideoPlayback_FFmpeg.Create); - -end. |