//
// C++ Interface: k9avidecode
//
// Description: 
//
//
// Author: Jean-Michel PETIT <k9copy@free.fr>, (C) 2007
//
// Copyright: See COPYING file that comes with this distribution
//
//
#ifndef K9AVIDECODE_H
#define K9AVIDECODE_H

#include "k9common.h"
#include <tqobject.h>
#ifdef OLD_FFMPEG
#include <ffmpeg/avformat.h>
#endif
#ifdef NEW_FFMPEG
#include <libavformat/avformat.h>
#include <libavutil/avutil.h>
#endif

#ifdef HAVE_SWSCALE
#include <libswscale/swscale.h>
#endif

#include <tqimage.h>

/**
	@author Jean-Michel PETIT <k9copy@free.fr>
*/


//typedef dvd_file_t * (*DVDOpenFile_t) ( dvd_reader_t *, int, dvd_read_domain_t );
typedef void (*av_register_all_t) (void);
typedef int64_t (*av_gettime_t) (void);
#if LIBAVFORMAT_VERSION_INT >= AV_VERSION_INT(53, 2, 0)
typedef int (*avformat_open_input_t)(AVFormatContext **, const char *, AVInputFormat *, AVDictionary **);
#else
typedef int (*av_open_input_file_t)(AVFormatContext **, const char *,AVInputFormat *,int, AVFormatParameters *);
#endif
#if LIBAVFORMAT_VERSION_INT >= AV_VERSION_INT(53, 6, 0)
typedef int (*avformat_find_stream_info_t)(AVFormatContext *, AVDictionary **);
#else
typedef int (*av_find_stream_info_t)(AVFormatContext *);
#endif
#if LIBAVCODEC_VERSION_INT >= AV_VERSION_INT(54, 25, 0)
typedef AVCodec* (*avcodec_find_decoder_t)(enum AVCodecID);
#else
typedef AVCodec* (*avcodec_find_decoder_t)(enum CodecID);
#endif
#if LIBAVCODEC_VERSION_INT >= AV_VERSION_INT(53, 8, 0)
typedef int (*avcodec_open2_t)(AVCodecContext *, AVCodec *, AVDictionary **);
#else
typedef int (*avcodec_open_t)(AVCodecContext *, AVCodec *);
#endif
typedef AVFrame * (*avcodec_alloc_frame_t)(void);

typedef int (*avpicture_get_size_t)(int , int , int );
typedef void * (*av_malloc_t)(unsigned int );
typedef int (*avpicture_fill_t)(AVPicture *, uint8_t *,int , int , int);
typedef int (*av_read_frame_t)(AVFormatContext *, AVPacket *);

#if LIBAVCODEC_VERSION_INT >= AV_VERSION_INT(52, 23, 0)
typedef int (*avcodec_decode_video2_t)(AVCodecContext *, AVFrame *, int *, AVPacket *);
#else
typedef int (*avcodec_decode_video_t)(AVCodecContext *, AVFrame *,int *, uint8_t *, int );
#endif
typedef int (*img_convert_t)(AVPicture *, int , const AVPicture *, int ,int, int);
typedef void (*av_free_t)(void *);
typedef int (*avcodec_close_t)(AVCodecContext *);
#if LIBAVFORMAT_VERSION_INT >= AV_VERSION_INT(53, 17, 0)
typedef void (*avformat_close_input_t)(AVFormatContext **);
#else
typedef void (*av_close_input_file_t)(AVFormatContext *);
#endif
typedef int (*av_seek_frame_t)(AVFormatContext *,int,int64_t timestamp,int flags); 		typedef int64_t (*av_rescale_q_t)(int64_t , AVRational , AVRational )	;
typedef void (*avcodec_flush_buffers_t)(AVCodecContext *);
typedef void (*av_free_packet_t)(AVPacket *);

#ifdef HAVE_SWSCALE
typedef void (*sws_freeContext_t)(struct SwsContext *swsContext);
typedef struct SwsContext* (*sws_getContext_t)(int srcW, int srcH, int srcFormat, int dstW, int dstH, int dstFormat, int flags, SwsFilter *srcFilter, SwsFilter *dstFilter, double *param);
typedef int (*sws_scale_t)(struct SwsContext *context, uint8_t* src[], int srcStride[], int srcSliceY,int srcSliceH, uint8_t* dst[], int dstStride[]);
#endif


class k9AviDecode : public TQObject
{
Q_OBJECT
  
public:
    k9AviDecode(TQObject *parent = 0, const char *name = 0);

    ~k9AviDecode();
    bool open(const TQString & _fileName);
    void readFrame(double _seconds);
    void seek(double _seconds);
    void close();
    double getDuration() const;
    bool opened() const;

    TQString getFileName() const;

	TQString getError() const;
	
private:
    av_register_all_t av_register_all;
#   if LIBAVFORMAT_VERSION_INT >= AV_VERSION_INT(53, 2, 0)
    avformat_open_input_t avformat_open_input;
#   else
    av_open_input_file_t av_open_input_file;
#   endif
#   if LIBAVFORMAT_VERSION_INT >= AV_VERSION_INT(53, 6, 0)
    avformat_find_stream_info_t avformat_find_stream_info;
#   else
    av_find_stream_info_t av_find_stream_info;
#   endif
    avcodec_find_decoder_t avcodec_find_decoder;
#   if LIBAVCODEC_VERSION_INT >= AV_VERSION_INT(53, 8, 0)
    avcodec_open2_t avcodec_open2;
#   else
    avcodec_open_t avcodec_open;
#   endif
    avcodec_alloc_frame_t avcodec_alloc_frame;
    av_seek_frame_t av_seek_frame;
    avpicture_get_size_t avpicture_get_size;
    av_malloc_t av_malloc;
    avpicture_fill_t avpicture_fill;
    av_read_frame_t av_read_frame;
#   if LIBAVCODEC_VERSION_INT >= AV_VERSION_INT(52, 23, 0)
    avcodec_decode_video2_t avcodec_decode_video2;
#   else
    avcodec_decode_video_t avcodec_decode_video;
#   endif
    img_convert_t img_convert;
    av_free_t av_free;
    avcodec_close_t avcodec_close;
#   if LIBAVFORMAT_VERSION_INT >= AV_VERSION_INT(53, 17, 0)
    avformat_close_input_t avformat_close_input;
#   else
    av_close_input_file_t av_close_input_file;
#   endif
    av_rescale_q_t av_rescale_q;
    av_gettime_t av_gettime;
    avcodec_flush_buffers_t avcodec_flush_buffers;
    av_free_packet_t av_free_packet;
#   ifdef HAVE_SWSCALE
    sws_freeContext_t sws_freeContext;
    sws_getContext_t sws_getContext;
    sws_scale_t sws_scale;
#   endif


    AVFormatContext *m_FormatCtx;
    AVCodecContext *m_CodecCtx;
    AVCodec *m_Codec;
    AVFrame *m_Frame,*m_FrameRGB;
    uint8_t *m_buffer;
    int m_videoStream;
    bool m_opened;
    double m_duration;
    TQString m_fileName;
    TQString m_error;
    void SaveFrame(AVFrame *pFrame, int width, int height);
signals:
    void drawFrame(TQImage*);
};

#endif
