add more logs print for hw codec init.

Author: cloudwebrtc

webrtc-sys/src/nvidia/cuda_context.cpp

@@ -63,8 +63,10 @@ bool CudaContext::Initialize() {
   // Initialize CUDA context
 
   bool success = load_cuda_modules();
-  if (!success)
+  if (!success) {
+    std::cout << "Failed to load CUDA modules. maybe the NVIDIA driver is not installed?" << std::endl;
     return false;
+  }
 
   int numDevices = 0;
   CUdevice cu_device = 0;

webrtc-sys/src/nvidia/nvidia_encoder_factory.cpp

@@ -32,9 +32,11 @@ bool NvidiaVideoEncoderFactory::IsSupported() {
   // Check if the CUDA context can be initialized.
   auto cu_context = std::make_unique<livekit::CudaContext>();
   if (!cu_context->Initialize()) {
-    RTC_LOG(LS_ERROR) << "Failed to initialize CUDA context.";
+    std::cout << "Failed to initialize CUDA context." << std::endl;
     return false;
   }
+
+  std::cout << "Nvidia Codec is supported." << std::endl;
   return true;
 }
 

webrtc-sys/src/vaapi/vaapi_display_drm.cpp

@@ -110,7 +110,7 @@ namespace livekit {
 bool VaapiDisplayDrm::Open() {
   va_display_ = va_open_display_drm(&drm_fd_);
   if (!va_display_) {
-    fprintf(stderr, "Failed to open VA display\n");
+    std::cout << "Failed to open VA display. Maybe the AMD video driver or libva-dev/libdrm-dev is not installed?" << std::endl;
     return false;
   }
   return true;