void V4L::init(const CameraProps & props) {
dev_name = "/dev/" + props.device;
if (openDevice()) {
getDeviceCapabilities();
getVideoProperty(0);
getBufferSize();
} else
LOG(LERROR) << "function: V4L\n";
}
/**
*
* @param avctx
* @return
*/
static bool probeCuda()
{
ADM_info( "Probing cuda\n");
if(!loadCuda())
{
ADM_warning("Cannot load cuda\n");
return false;
}
ADM_warning("Cuda loaded, probing..\n");
if(!cudaCall(init(0)))
return false;
int deviceCount=0;
if(!cudaCall(getDeviceCount(&deviceCount)))
return false;
if (!deviceCount)
{
ADM_warning( "No Cuda device available\n");
return false;
}
ADM_info( "found %d CUDA devices \n", deviceCount);
for (int i = 0; i < deviceCount; ++i)
{
CUdevice dev;
char chipName[128];
int major,minor,ver;
cudaAbortOnFail(getDevice(&dev,i));
cudaAbortOnFail(getDeviceName(chipName,sizeof(chipName),dev));
cudaAbortOnFail(getDeviceCapabilities(&major,&minor,dev));
ver = (major << 4) | minor;
ADM_info("Found chip, GPU %s, SM %d.d",chipName,major,minor);
if(ver>=0x30)
{
ADM_info(" this chip has nvenc");
if(!nvEncAvailable)
{
nvEncAvailable=true;
selectedDevice=dev;
}
}
}
return nvEncAvailable;
abortCudaProbe:
return false;
}
