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// Copyright (C) 2010 Dirk Vanden Boer <dirk.vdb@gmail.com>
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#ifndef MOVIEDECODER_H
#define MOVIEDECODER_H
#include <inttypes.h>
#include <string>
#include <vector>
extern "C" {
#include <libavcodec/avcodec.h>
#include <libavformat/avformat.h>
}
namespace ffmpegthumbnailer
{
struct VideoFrame;
class MovieDecoder
{
public:
MovieDecoder(const std::string& filename, AVFormatContext* pavContext = NULL);
~MovieDecoder();
std::string getCodec();
void seek(int timeInSeconds);
void decodeVideoFrame();
void getScaledVideoFrame(int scaledSize, bool maintainAspectRatio, VideoFrame& videoFrame);
int getWidth();
int getHeight();
int getDuration();
void initialize(const std::string& filename);
void destroy();
private:
void initializeVideo();
bool decodeVideoPacket();
bool getVideoPacket();
void convertAndScaleFrame(PixelFormat format, int scaledSize, bool maintainAspectRatio, int& scaledWidth, int& scaledHeight);
void createAVFrame(AVFrame** pAvFrame, uint8_t** pFrameBuffer, int width, int height, PixelFormat format);
void calculateDimensions(int squareSize, bool maintainAspectRatio, int& destWidth, int& destHeight);
private:
int m_VideoStream;
AVFormatContext* m_pFormatContext;
AVCodecContext* m_pVideoCodecContext;
AVCodec* m_pVideoCodec;
AVStream* m_pVideoStream;
AVFrame* m_pFrame;
uint8_t* m_pFrameBuffer;
AVPacket* m_pPacket;
bool m_FormatContextWasGiven;
bool m_AllowSeek;
};
}
#endif
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