学步园

参考：http://www.rosoo.net/a/201006/9659.html

 

Decode()
{
FILE * inpf;

int nWrite;
int i,p;
int nalLen;
unsigned char* Buf;
int got_picture, consumed_bytes;
unsigned char *DisplayBuf;
DisplayBuf=(unsigned char *)malloc(60000);

char outfile[] = "test.pgm";

//1.打开输入文件
inpf = fopen("test.264", "rb");

//outf = fopen("out.yuv", "wb");

if(!inpf)
{
goto Decodereturn;
}

nalLen = 0;
Buf = (unsigned char*)calloc ( 1000000, sizeof(char)); //准备解码文件缓冲

//2.注册解码器，并且找到H264解码器
avcodec_init();
avcodec_register_all();
codec = avcodec_find_decoder(CODEC_ID_H264);

if (!codec) {
return 0;
}
//allocate codec context
//分配解码器内存
c = avcodec_alloc_context();

if(!c){
return 0;
}
//open codec
//3.打开解码器