基于嵌入式Linux的视频采集系统17-----源程序----decoder.h

本文来自：
http://blog.chinaunix.net/uid-23093301-id-86406.html

#ifndef __DECODER_H_INCLUDE

#define __DECODER_H_INCLUDE

#ifdef __cplusplus

extern "C" {

#endif  /* __cplusplus */

#include "avcodec.h"

#include "libavutil/mathematics.h"

#include "libavformat/avformat.h"

#include "libswscale/swscale.h"

#include "libavcodec/avcodec.h"

#ifdef __cplusplus

}

#endif  /* __cplusplus */

#include <iostream>

#include <string>

#include <vector>

#include<pthread.h>

using namespace std;

#define DEF_FRAME_SIZE 10844*5 

typedef struct TFrameNode

{

AVPacket pkt;

void*  buff[DEF_FRAME_SIZE];

int  size;

}TFrameNode;

class CDecoder

{

public:

CDecoder();

~CDecoder();

void push_frame(void* img,int size);

AVPacket* pop_frame();

void try_show(AVFrame* picture,int width=320,int height=240);

char*  readall_file(const string& file,int & size);

private:

AVFrame * do_alloc_picture(int pix_fmt, int width, int height);

private:

char  filename [256];

vector<TFrameNode>  m_frame_que;

int   cur_process_pos;

int   cur_append_pos;

int   num_has_append;

TFrameNodem_convert_buff;

private:

//////////////////////// for thread safe 

pthread_cond_t m_pthread_cond;

pthread_mutex_t m_mutex;

};

#endif