mirror of https://github.com/odrling/Aegisub
146 lines
4.1 KiB
C++
146 lines
4.1 KiB
C++
// Copyright (c) 2006-2007, Rodrigo Braz Monteiro
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are met:
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//
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// * Redistributions of source code must retain the above copyright notice,
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// this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above copyright notice,
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// this list of conditions and the following disclaimer in the documentation
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// and/or other materials provided with the distribution.
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// * Neither the name of the Aegisub Group nor the names of its contributors
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// may be used to endorse or promote products derived from this software
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// without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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// POSSIBILITY OF SUCH DAMAGE.
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//
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// -----------------------------------------------------------------------------
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//
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// AEGISUB
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//
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// Website: http://aegisub.cellosoft.com
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// Contact: mailto:zeratul@cellosoft.com
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//
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///////////
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// Headers
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#ifdef WITH_FFMPEG
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#ifdef WIN32
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#define EMULATE_INTTYPES
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#endif
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#include <vector>
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extern "C" {
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#ifdef WITH_ANCIENT_FFMPEG
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#include <ffmpeg/avcodec.h>
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#include <ffmpeg/avformat.h>
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#include <ffmpeg/swscale.h>
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#else
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#include <libavcodec/avcodec.h>
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#include <libavformat/avformat.h>
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#include <libswscale/swscale.h>
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#endif /* WITH_ANCIENT_FFMPEG */
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}
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#include "include/aegisub/video_provider.h"
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#include "include/aegisub/aegisub.h"
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#include "mkv_wrap.h"
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#include "lavc_file.h"
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#include "lavc_keyframes.h"
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///////////////////////
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// LibAVCodec provider
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class LAVCVideoProvider : public VideoProvider {
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friend class LAVCAudioProvider;
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private:
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MatroskaWrapper mkv;
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LAVCFile *lavcfile;
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AVCodecContext *codecContext;
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AVStream *stream;
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AVCodec *codec;
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AVFrame *frame;
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int vidStream;
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AVFrame *frameRGB;
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uint8_t *bufferRGB;
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SwsContext *sws_context;
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wxArrayInt KeyFramesList;
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bool keyFramesLoaded;
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// bool isVfr; // currently unused
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int display_w;
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int display_h;
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wxArrayInt bytePos;
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bool allowUnsafeSeeking;
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bool isMkv;
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int64_t lastDecodeTime;
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int frameNumber;
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int lastFrameNumber;
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int length;
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AegiVideoFrame curFrame;
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bool validFrame;
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LAVCFrameInfoVector framesData;
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uint8_t *buffer1;
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uint8_t *buffer2;
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int buffer1Size;
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int buffer2Size;
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int FindClosestKeyframe(int frameN);
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int FrameFromDTS(int64_t ADTS);
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int ClosestFrameFromDTS(int64_t ADTS);
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bool GetNextFrame(int64_t *DTS);
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void LoadVideo(Aegisub::String filename, double fps);
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void Close();
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protected:
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public:
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LAVCVideoProvider(Aegisub::String filename, double fps);
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~LAVCVideoProvider();
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const AegiVideoFrame GetFrame(int n,int formatType);
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int GetPosition();
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int GetFrameCount();
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int GetWidth();
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int GetHeight();
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double GetFPS();
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bool AreKeyFramesLoaded() { return keyFramesLoaded; };
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wxArrayInt GetKeyFrames() { return KeyFramesList; };
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bool IsVFR() { return false; }; // FIXME: bork?
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FrameRate GetTrueFrameRate() { return FrameRate(); }; // nothing useful here
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Aegisub::String GetDecoderName() { return L"FFMpeg/libavcodec"; }
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bool IsNativelyByFrames() { return true; }
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int GetDesiredCacheSize() { return 8; }
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};
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///////////
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// Factory
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class LAVCVideoProviderFactory : public VideoProviderFactory {
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public:
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VideoProvider *CreateProvider(Aegisub::String video,double fps=0.0) { return new LAVCVideoProvider(video,fps); }
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};
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#endif
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