#ifndef CFFMPEG_DECODE_H
#define CFFMPEG_DECODE_H

#include <QDebug>
#include <QImage>
#include <QPaintEvent>
#include <QPainter>
#include <QThread>
#include <QWidget>

extern "C" {
#include "libavcodec/avcodec.h"

#include <libavutil/channel_layout.h>
#include <libavutil/common.h>
#include <libavutil/frame.h>
#include <libavutil/imgutils.h>
#include <libavutil/mem.h>
#include <libavutil/opt.h>
#include <libavutil/parseutils.h>
#include <libavutil/samplefmt.h>

#include <libswscale/swscale.h>

#include <libavformat/avformat.h>
}

// class Cffmpeg_decode: public QThread
class Cffmpeg_decode : public QObject {
  Q_OBJECT
public:
  // explicit Cffmpeg_decode();
  Cffmpeg_decode(QObject *parent = nullptr);
  ~Cffmpeg_decode();

public:
  void setUrl(QString url);
  bool open_input_file();
  bool IsstopPlay = false;
  void stop();
public slots:
  void run();

signals:
  void sendQImage(QImage);
  void sendConnectFail(int);

private:
  AVFormatContext *inputFormatCtx = NULL;  //
  AVFormatContext *outputFormatCtx = NULL; //

  AVCodecContext *decoderCtx = NULL; //
  AVCodecContext *encoderCtx = NULL;//

  const AVCodec *decoder = NULL; // 解码器
  const AVCodec *encoder = NULL; //

  AVPacket *inputPacket = NULL;  //
  AVPacket *outputPacket = NULL; //

  AVFrame *yuvFrame = NULL;
  AVFrame *rgbFrame = NULL;

  struct SwsContext *swsCtx = NULL;

  AVCodecParameters *videoCodecPara = nullptr;
  AVCodecParameters *videoCodecPara2 = nullptr;


  AVStream *outStream;

  unsigned char *out_buffer = nullptr;

  int videoStreamIndex = -1;
  int videoStreamIndexOut = -1;
  int numBytes = -1;

  QString _url;
};

#endif // CFFMPEG_DECODE_H