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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 <cinttypes>
#include <string>
#include <vector>
#include <mutex>
#include <unordered_map>
#include <functional>
#include "ffmpegthumbnailertypes.h"
struct AVFilterGraph;
struct AVFilterContext;
struct AVFormatContext;
struct AVCodecContext;
struct AVCodec;
struct AVStream;
struct AVFrame;
struct AVPacket;
struct AVRational;
namespace ffmpegthumbnailer
{
struct VideoFrame;
class MovieDecoder
{
public:
MovieDecoder(AVFormatContext* pavContext = nullptr);
~MovieDecoder();
std::string getCodec();
void seek(int timeInSeconds);
void decodeVideoFrame();
void getScaledVideoFrame(const std::string& scaledSize, bool maintainAspectRatio, VideoFrame& videoFrame);
int getWidth();
int getHeight();
int getDuration();
void initialize(const std::string& filename, bool preferEmbeddedMetadata);
void destroy();
bool embeddedMetaDataIsAvailable();
private:
int32_t findPreferedVideoStream(bool preferEmbeddedMetadata);
void initializeVideo(bool preferEmbeddedMetadata);
void initializeFilterGraph(const AVRational& timeBase, const std::string& size, bool maintainAspectRatio);
bool decodeVideoPacket();
bool getVideoPacket();
int32_t getStreamRotation();
std::string createScaleString(const std::string& size, bool maintainAspectRatio);
void checkRc(int ret, const std::string& message);
private:
int m_VideoStream;
AVFormatContext* m_pFormatContext;
AVCodecContext* m_pVideoCodecContext;
const AVCodec* m_pVideoCodec;
AVFilterGraph* m_pFilterGraph;
AVFilterContext* m_pFilterSource;
AVFilterContext* m_pFilterSink;
AVStream* m_pVideoStream;
AVFrame* m_pFrame;
AVPacket* m_pPacket;
bool m_FormatContextWasGiven;
bool m_AllowSeek;
bool m_UseEmbeddedData;
};
}
#endif
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