标签：文档 smo nap mat sharp highlight info compress 就是
这个SDK里面有一个三路编码h264的流，另外一个是JPEG抓拍的。
虽然文档里面建议通道0进行抓拍，SDK用的通道1. 将其入到三路码流之后。通道3。
开始一直错误，VpssChn = 3;没有设定，设定如下：
//抓拍的通道 获取图像‘小
s32Ret = SAMPLE_COMM_SYS_GetPicSize(gs_enNorm, enSize[0], &stSize);
if (HI_SUCCESS != s32Ret)
{
SAMPLE_PRT("SAMPLE_COMM_SYS_GetPicSize failed!\n");
goto END_VENC_1080P_CLASSIC_4;
}
VpssChn = 3;
stVpssChnMode.enChnMode = VPSS_CHN_MODE_USER;
stVpssChnMode.bDouble = HI_FALSE;
stVpssChnMode.enPixelFormat = PIXEL_FORMAT_YUV_SEMIPLANAR_420;
stVpssChnMode.u32Width = stSize.u32Width;
stVpssChnMode.u32Height = stSize.u32Height;
stVpssChnMode.enCompressMode = COMPRESS_MODE_NONE;
memset(&stVpssChnAttr, 0, sizeof(stVpssChnAttr));
stVpssChnAttr.s32SrcFrameRate = -1;
stVpssChnAttr.s32DstFrameRate = -1;
s32Ret = SAMPLE_COMM_VPSS_EnableChn(VpssGrp, VpssChn, &stVpssChnAttr, &stVpssChnMode, HI_NULL);
if (HI_SUCCESS != s32Ret)
{
SAMPLE_PRT("Enable vpss chn failed!\n");
goto END_VENC_1080P_CLASSIC_4;
}
之后就是绑定和获取图片
//hg 添加拍照功能 2018-12-24
VpssGrp = 0;
VpssChn = 3;
VencChn = 3;
s32Ret = SAMPLE_COMM_VENC_SnapStart(VpssChn,&stSize,HI_FALSE);
if(HI_SUCCESS !=s32Ret)
{
SAMPLE_PRT("Start snap failed!\n");
goto END_VENC_JPEG_6;
}
s32Ret = SAMPLE_COMM_VENC_BindVpss(VencChn, VpssGrp, VpssChn);
if (HI_SUCCESS != s32Ret)
{
SAMPLE_PRT("Start Venc failed!\n");
goto END_VENC_JPEG_6;
}
三个图可以直观的观察vpss:
标签：文档 smo nap mat sharp highlight info compress 就是
原文地址：https://www.cnblogs.com/hgstudy/p/10171374.html
