144       std::string device_name = devdir + filename;  in ScanDeviceDirectory()  local
147             V4LLookup::IsV4L2Device(device_name)) {  in ScanDeviceDirectory()
148           devices->push_back(Device(device_name, device_name));  in ScanDeviceDirectory()
156   std::string device_name;  in GetVideoDeviceNameK2_6()  local
162     if (device_meta_stream->ReadLine(&device_name) != rtc::SR_SUCCESS) {  in GetVideoDeviceNameK2_6()
168   return device_name;  in GetVideoDeviceNameK2_6()
209   std::string device_name;  in GetVideoDeviceName()  local
216     device_name = GetVideoDeviceNameK2_6(meta_file_path);  in GetVideoDeviceName()
218     if (device_name.empty()) {  in GetVideoDeviceName()
222       device_name = GetVideoDeviceNameK2_6(meta_file_path);  in GetVideoDeviceName()
227     device_name = GetVideoDeviceNameK2_4(meta_file_path);  in GetVideoDeviceName()
230   if (device_name.empty()) {  in GetVideoDeviceName()
231     device_name = "/dev/" + device_file_name;  in GetVideoDeviceName()
233       << "Device name not found, defaulting to device path " << device_name;  in GetVideoDeviceName()
236   LOG(LS_INFO) << "Name for " << device_file_name << " is " << device_name;  in GetVideoDeviceName()
238   return Trim(device_name);  in GetVideoDeviceName()