Aegisub/aegisub/video_provider_lavc.h

145 lines
4.1 KiB
C++

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