decode_h264(const uint8_t* in_buf, int in_buf_size, uint8_t** out_buf, int* out_buf_size,UserRenderInfo &userInfo)
{
while(in_buf_size > 0)
{
int len = 0;
len = av_parser_parse2(userInfo.pDecoderParserContext,userInfo.pCodecCtx, &m_avpkt.data, &m_avpkt.size, in_buf, in_buf_size, 0, 0, 0);

in_buf	+= len;
in_buf_size -= len;

if(m_avpkt.size > 0)
{
	int res;
	res = avcodec_decode_video2(userInfo.pCodecCtx, 	userInfo.pFrame,&got_picture,&m_avpkt);

	av_free_packet(&m_avpkt);
	if (got_picture)
	{
	sws_scale(userInfo.decoderConvertCtx, userInfo.pFrame->data, userInfo.pFrame-	>linesize , 0, userInfo.pFrame->height, userInfo.pOutFrame->data, 	userInfo.pOutFrame->linesize);

	*out_buf_size = userInfo.pOutFrame->linesize[0];
	*out_buf = userInfo.pOutFrame->data[0];
	}
}
break;
}
}