Hi3519 设置crop动态调节输出分辨率

Posted 2022-11-11 红尘六欲

正常出图后，客户要求调整视角，所以需要在开始编码后设置crop，测试过好多办法都不行，单独只设置venc的crop不行，设置vpss，再设置venc也不行，设置isp，vpss在设置venc也不行，最后找到一个同样要设置crop的说是要先设置vi，最后测试成功。主要代码如下

void mycamera_setCrop(int width,int height,int x,int y)

	HI_S32 s32Ret;

	VI_CROP_INFO_S pstCropInfo;
	s32Ret = HI_MPI_VI_GetChnCrop(myViPipe,myViChn,&pstCropInfo);
	printf("HI_MPI_VI_GetChnCrop s32Ret=:0x%lx\\n",s32Ret);
	pstCropInfo.bEnable = 1;
	pstCropInfo.enCropCoordinate = 1;
	pstCropInfo.stCropRect.s32X = x;
	pstCropInfo.stCropRect.s32Y = y;
	pstCropInfo.stCropRect.u32Width = width;
	pstCropInfo.stCropRect.u32Height = height;
	s32Ret = HI_MPI_VI_SetChnCrop(myViPipe,myViChn,&pstCropInfo);
	printf("HI_MPI_VI_SetChnCrop s32Ret=:0x%lx\\n",s32Ret);


	VENC_CHN_ATTR_S stChnAttr;
	s32Ret = HI_MPI_VENC_GetChnAttr(myVencChn[0],&stChnAttr);
	if (HI_SUCCESS != s32Ret)
    
        SAMPLE_PRT("HI_MPI_VENC_GetChnAttr failed s32Ret:0x%lx!\\n",s32Ret);
        return;
    
	printf("HI_MPI_VENC_GetChnAttr u32PicWidth:%ld u32PicHeight:%ld\\n",stChnAttr.stVencAttr.u32PicWidth,stChnAttr.stVencAttr.u32PicHeight);
	stChnAttr.stVencAttr.u32PicWidth = width;
	stChnAttr.stVencAttr.u32PicHeight = height;

	s32Ret =HI_MPI_VENC_StopRecvFrame(myVencChn[0]);
	printf("HI_MPI_VENC_StopRecvFrame s32Ret=:0x%lx\\n",s32Ret);

	s32Ret = HI_MPI_VENC_SetChnAttr(myVencChn[0],&stChnAttr);
	if (HI_SUCCESS != s32Ret)
    
        SAMPLE_PRT("HI_MPI_VENC_SetChnAttr failed s32Ret:0x%lx!\\n",s32Ret);
        return;
     else
		printf("HI_MPI_VENC_SetChnAttr success\\n");

	VENC_RECV_PIC_PARAM_S RecvParam;
    RecvParam.s32RecvPicNum = -1;
	s32Ret = HI_MPI_VENC_StartRecvFrame(myVencChn[0],&RecvParam);
   	printf("HI_MPI_VENC_StartRecvFrame s32Ret=:0x%lx\\n",s32Ret);
	if (HI_SUCCESS != s32Ret)
    
        SAMPLE_PRT("HI_MPI_VENC_StartRecvFrame failed s32Ret:0x%lx!\\n",s32Ret);
        return;
     else
		printf("HI_MPI_VENC_StartRecvFrame success\\n");

开始出图后，通过调用这个函数要设置偏移与宽高都正常。如果后面调节HI_MPI_VENC_SetChnAttr设置venc的宽高，那最终venc会将图像缩放到原始大小.

参考

链接: https://www.ebaina.com/resources/240000026785
链接: http://bbs.ebaina.com/thread-18088-1-7.html