C++ (Cpp) vc1_find_frame_end Examples

Example #1

File: vc1_parser.cpp Project: mcodegeeks/OpenKODE-Framework

static int vc1_parse(AVCodecParserContext *s,
                           AVCodecContext *avctx,
                           const uint8_t **poutbuf, int *poutbuf_size,
                           const uint8_t *buf, int buf_size)
{
    VC1ParseContext *vpc = (VC1ParseContext *)s->priv_data;
    int next;

    if(s->flags & PARSER_FLAG_COMPLETE_FRAMES){
        next= buf_size;
    }else{
        next= vc1_find_frame_end(&vpc->pc, buf, buf_size);

        if (ff_combine_frame(&vpc->pc, next, &buf, &buf_size) < 0) {
            *poutbuf = NULL;
            *poutbuf_size = 0;
            return buf_size;
        }
    }

    vc1_extract_headers(s, avctx, buf, buf_size);

    *poutbuf = buf;
    *poutbuf_size = buf_size;
    return next;
}

Example #2

File: vc1_parser.c Project: MindShow/hisi-driverlibs

/* 新增函数：寻找完整的一幅图像(一场或是一帧) */
int VC1_Frame_Parse(AVCodecContext *pstAVCodecContext,const uint8_t **pucOutBuf, unsigned int *puiOutBufSize,const uint8_t *pucInBuf, unsigned int uiInBufSize, int *piLength)
{
	int iRet = IMEDIA_RET_SUCCESS;

	VC1Context *pstVC1Context;
	ParseContext *pstParseContext;
	int iBytesConsumed = 0;
	int iReturn = 0;

	if(NULL == pstAVCodecContext)
	{
		av_log(pstAVCodecContext, AV_LOG_ERROR, "the decoder handle is NULL\n");
		return IMEDIA_RET_PARAM_NULL;
	}

	if(0 == uiInBufSize)
	{
		av_log(pstAVCodecContext, AV_LOG_INFO, "the length of input bitstream is zero!\n");
	}	

	if(0 != uiInBufSize && NULL == pucInBuf)
	{
		av_log(pstAVCodecContext, AV_LOG_ERROR, "input bitstream buf is NULL\n");
		return IMEDIA_RET_PARAM_NULL;
	}

	if(NULL == pucOutBuf || NULL == puiOutBufSize)
	{
		av_log(pstAVCodecContext, AV_LOG_ERROR,"output bitstream buf or length pointer is NULL\n");
		return IMEDIA_RET_PARAM_NULL;
	}

	pstVC1Context  = (VC1Context*)pstAVCodecContext->priv_data;
	pstParseContext = &pstVC1Context->s.parse_context;


	iBytesConsumed = vc1_find_frame_end(pstParseContext, pucInBuf, uiInBufSize);

	iReturn = ff_combine_frame(pstParseContext, iBytesConsumed, &pucInBuf, &uiInBufSize);
	if (0 > iReturn)
	{
		/* start and end of the frame is not fount! */
		*pucOutBuf = NULL;
		*puiOutBufSize = 0;
		*piLength = uiInBufSize;
		return iRet;
	}

	/* 如果当前解析帧在前一个buffer的边界，则当前buffer的解析用掉的字节数为0 */
	if(0 > iBytesConsumed)
	{
		iBytesConsumed = 0;
	}

	*pucOutBuf     = pucInBuf;
	*puiOutBufSize = uiInBufSize;
	*piLength       = iBytesConsumed;

	return iRet;
}