Aegisub/aegisub/video_provider_avs.h
Karl Blomster 893ff2f78a Major rewrite of the video providing system. Hilights:
- It is now the responsibility of each video provider to provide a list of keyframe positions and (if it can) timecodes.
- The ffmpeg video provider now indexes files before opening them and does no longer rely on stream->duration to determine the number of frames. Fixes opening of MKV files, but it does not (currently) open timecodes automatically and reported keyframe positions seem way off. Status of frame-accuracy with MKV files unknown but it may very well work.
- Modified the way the ffmpeg video provider seeks (inspired by code from Myrsloik's ffmpegsource). Should no longer lose the first frame and should also no longer be frame-inaccurate, at least not with AVI.
- DirectShow video provider may or may not be completely broken, not tested.

Originally committed to SVN as r2252.
2008-07-15 00:08:05 +00:00

116 lines
3.8 KiB
C++

// Copyright (c) 2006, Fredrik Mellbin
// 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
#include <wx/wxprec.h>
#ifdef WITH_AVISYNTH
#include "avisynth_wrap.h"
#include "include/aegisub/video_provider.h"
#include "include/aegisub/subtitles_provider.h"
////////////
// Provider
class AvisynthVideoProvider: public VideoProvider, SubtitlesProvider, AviSynthWrapper {
private:
VideoInfo vi;
AegiVideoFrame iframe;
bool usedDirectShow;
Aegisub::String rendererCallString;
Aegisub::String decoderName;
int num_frames;
int last_fnum;
double fps;
wxArrayInt frameTime;
bool byFrame;
wxArrayInt KeyFrames;
bool keyFramesLoaded;
bool isVfr;
FrameRate trueFrameRate;
PClip RGB32Video;
PClip SubtitledVideo;
PClip OpenVideo(Aegisub::String _filename, bool mpeg2dec3_priority = true);
PClip ApplySubtitles(Aegisub::String _filename, PClip videosource);
void LoadVSFilter();
void LoadASA();
void LoadRenderer();
public:
AvisynthVideoProvider(Aegisub::String _filename, double fps=0.0);
~AvisynthVideoProvider();
SubtitlesProvider *GetAsSubtitlesProvider();
void LoadSubtitles(AssFile *subs);
bool LockedToVideo() { return true; }
const AegiVideoFrame GetFrame(int n,int formatMask);
void GetFloatFrame(float* Buffer, int n);
// properties
int GetPosition() { return last_fnum; };
int GetFrameCount() { return num_frames? num_frames: vi.num_frames; };
double GetFPS() { return (double)vi.fps_numerator/(double)vi.fps_denominator; };
int GetWidth() { return vi.width; };
int GetHeight() { return vi.height; };
bool AreKeyFramesLoaded() { return keyFramesLoaded; };
wxArrayInt GetKeyFrames() { return KeyFrames; };
bool IsVFR() { return isVfr; };
FrameRate GetTrueFrameRate() { return isVfr? trueFrameRate: FrameRate(); };
void OverrideFrameTimeList(wxArrayInt list);
bool IsNativelyByFrames() { return byFrame; }
Aegisub::String GetWarning();
Aegisub::String GetDecoderName() { return Aegisub::String(L"Avisynth/") + decoderName; }
};
///////////
// Factory
class AvisynthVideoProviderFactory : public VideoProviderFactory {
public:
VideoProvider *CreateProvider(Aegisub::String video,double fps=0.0) { return new AvisynthVideoProvider(video,fps); }
};
#endif