/*
i have a problem related to av_open_input_stream usage.
it returns -1 and when i trace it in detail, read_header in asf.c returns -1
when comparing headers (GUID information).
it seems like my ByteIOContext is empty..
i don't know why..
*/
int read_data(void *opaque, uint8_t *buf, int buf_size){
printf("it is here. buf_size. %d",buf_size);
FILE * fp = (FILE *) opaque;
if (!fp)
{
return -1;
}
int cnt = fread(buf, sizeof(uint8_t), buf_size, fp);
return cnt;
}
void doit(){
FILE * fp = fopen("79.wma", "r");
avcodec_init();
avcodec_register_all();
av_register_all();
uint8_t pDataBuffer[2048];
long lSize = 2048;
read_data(fp, pDataBuffer, lSize);
AVProbeData pd;
pd.buf = pDataBuffer;
pd.buf_size = lSize;
pd.filename = "";
AVInputFormat* pAVInputFormat = av_probe_input_format(&pd, 1);
if(!pAVInputFormat)
{
printf("something 0");
return;
}
pAVInputFormat->flags |= AVFMT_NOFILE;
ByteIOContext ByteIOCtx;
if(init_put_byte(&ByteIOCtx, pDataBuffer, lSize, 0, fp, read_data,
NULL, NULL) < 0)
{
printf("something 1");
return ;
}
AVFormatContext* pFormatCtx;
if(av_open_input_stream(&pFormatCtx, &ByteIOCtx, "", pAVInputFormat,
NULL) < 0)
{
printf("something 2");
return ;
}
if(av_find_stream_info(pFormatCtx) < 0)
{
printf("something 3");
return ;
}
printf("something 4");
}
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