extern "C"
{
#include "libavcodec/avcodec.h"
#include "libavformat/avformat.h"
#include "libswscale/swscale.h"
#include "libavutil/imgutils.h"
}	

#pragma comment(lib, "avcodec.lib")
#pragma comment(lib, "avformat.lib")
#pragma comment(lib, "avutil.lib")
#pragma comment(lib, "swscale.lib")

typedef void (*CallbackFun)(unsigned char* data,int width,int height);

class Decoder_Software
{
public:
	Decoder_Software()
	{
		mSrcWth = 0;
		mSrcHth = 0;
		mDstWth = 0;
		mDstHth = 0;
		mPixFmt = 0;
		dst_bgr_pic_size = 0;
		dst_yuv_pic_size = 0;
		codec = NULL;
		codecctx= NULL;
		mSrcFrame = NULL;
		mDstFrame = NULL;
		scxt = NULL;
//		AVPacket pkt;
		s = NULL;
		opix_fmt = AV_PIX_FMT_YUV420P;

		mOutBuf = NULL;
	}
	~Decoder_Software(){}

	bool decoder_sw_init(int srcWth,int srcHth,int dstWth,int dstHth,int oPixFmt);
	void decoder_sw_decoding(unsigned char* in_buf,int in_len);
	void decoder_sw_release();
	void set_decoding_callback(CallbackFun fun){decodingCallback = fun;}

protected:
	void ffmpeg_ref_release();
	void pic_ref_mem_release();
private:
	int mSrcWth;
	int mSrcHth;
	int mDstWth;
	int mDstHth;
	int mPixFmt;
	int dst_bgr_pic_size;
	int dst_yuv_pic_size;
	AVCodec *codec;
	AVCodecContext *codecctx;
	AVFrame *mSrcFrame;
	AVFrame *mDstFrame;
	SwsContext *scxt;
	AVPacket pkt;
	AVCodecParserContext *s;
	uint8_t *mOutBuf;
	AVPixelFormat opix_fmt;

	CallbackFun decodingCallback;
};