Aegisub/aegisub/lavc_keyframes.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

64 lines
2.4 KiB
C++

// Copyright (c) 2007, 2points
// 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.
//
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// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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// 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
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//
// -----------------------------------------------------------------------------
//
// AEGISUB
//
// Website: http://aegisub.cellosoft.com
// Contact: mailto:zeratul@cellosoft.com
//
#pragma once
#include <wx/wxprec.h>
#include "lavc_file.h"
#include <vector>
struct FrameInfo {
int64_t DTS;
bool isKeyFrame;
FrameInfo(int64_t ADTS, bool isAKeyFrame) : DTS(ADTS), isKeyFrame(isAKeyFrame) {};
};
typedef std::vector<FrameInfo> FrameInfoVector;
class LAVCKeyFrames {
private:
LAVCFile* file; // Video file
AVStream* stream; // Used stream
int streamN; // Stream index
int numFrames; // number of frames in the video
protected:
FrameInfoVector framesData;
public:
LAVCKeyFrames(const Aegisub::String filename);
~LAVCKeyFrames();
wxArrayInt GetKeyFrames();
int GetNumFrames();
FrameInfoVector GetFrameData();
};