Address several comments

modules/gapi/include/opencv2/gapi/streaming/onevpl/accel_types.hpp

@@ -66,8 +66,7 @@ GAPI_EXPORTS Device create_dx11_device(Device::Ptr device_ptr,
 GAPI_EXPORTS Context create_dx11_context(Context::Ptr ctx_ptr);
 
 GAPI_EXPORTS Device create_vaapi_device(Device::Ptr device_ptr,
-                                       const std::string& device_name,
-                                       int file_description = -1);
+                                        const std::string& device_name);
 GAPI_EXPORTS Context create_vaapi_context(Context::Ptr ctx_ptr);
 } // namespace onevpl
 } // namespace wip

modules/gapi/samples/onevpl_infer_single_roi.cpp

@@ -557,7 +557,7 @@ int main(int argc, char *argv[]) {
         }
         gpu_accel_device = cv::util::make_optional(
                             cv::gapi::wip::onevpl::create_vaapi_device(reinterpret_cast<void*>(va_handle),
-                                                                       "GPU", device_fd));
+                                                                       "GPU"));
         gpu_accel_ctx = cv::util::make_optional(
                             cv::gapi::wip::onevpl::create_vaapi_context(nullptr));
 #endif // defined(HAVE_VA) || defined(HAVE_VA_INTEL)

modules/gapi/src/streaming/onevpl/cfg_param_device_selector.cpp

@@ -48,21 +48,21 @@ namespace gapi {
 namespace wip {
 namespace onevpl {
 #ifdef __linux__
-struct Aux {
-    ~Aux() {
+struct PlatformSpecificParams {
+    ~PlatformSpecificParams() {
         for (int fd : fds) {
             close(fd);
         }
     }
 
-    void remember_fd(int fd) {
+    void track_fd(int fd) {
         fds.insert(fd);
     }
 private:
     std::set<int> fds;
 };
 #else
-struct Aux {};
+struct PlatformSpecificParams {};
 #endif
 
 std::vector<CfgParam> update_param_with_accel_type(std::vector<CfgParam> &&param_array, AccelType type) {
@@ -238,11 +238,11 @@ CfgParamDeviceSelector::CfgParamDeviceSelector(const CfgParams& cfg_params) :
             // Unfortunately VAAPI doesn't provide API for extracting initial FD value from VADisplay, which
             // value is stored as VADisplay fields, by the way. But, because we here are only one creator
             // of VAAPI device then we will need make cleanup for all allocated resources by ourselfs
-            //and FD is definitely must be utilized. So, let's use complementary struct `Aux` which
+            //and FD is definitely must be utilized. So, let's use complementary struct `PlatformSpecificParams` which
             // represent some kind of 'platform specific data' and which will store opened FD for
             // future utilization
-            platform_specific_data.reset (new Aux);
-            platform_specific_data->remember_fd(device_fd);
+            platform_specific_data.reset (new PlatformSpecificParams);
+            platform_specific_data->track_fd(device_fd);
 
             suggested_device = IDeviceSelector::create<Device>(va_handle, "GPU", AccelType::VAAPI);
             suggested_context = IDeviceSelector::create<Context>(nullptr, AccelType::VAAPI);

modules/gapi/src/streaming/onevpl/cfg_param_device_selector.hpp

@@ -20,7 +20,7 @@ namespace gapi {
 namespace wip {
 namespace onevpl {
 
-class Aux;
+class PlatformSpecificParams;
 std::vector<CfgParam> update_param_with_accel_type(std::vector<CfgParam> &&param_array, AccelType type);
 
 struct GAPI_EXPORTS CfgParamDeviceSelector final: public IDeviceSelector {
@@ -40,7 +40,7 @@ struct GAPI_EXPORTS CfgParamDeviceSelector final: public IDeviceSelector {
 private:
     Device suggested_device;
     Context suggested_context;
-    std::unique_ptr<Aux> platform_specific_data;
+    std::unique_ptr<PlatformSpecificParams> platform_specific_data;
 };
 } // namespace onevpl
 } // namespace wip

modules/gapi/src/streaming/onevpl/device_selector_interface.cpp

@@ -120,8 +120,7 @@ Context create_dx11_context(Context::Ptr ctx_ptr) {
 }
 
 Device create_vaapi_device(Device::Ptr device_ptr,
-                           const std::string& device_name,
-                           int /*file_description*/) {
+                           const std::string& device_name) {
     return detail::DeviceContextCreator::create_entity<Device>(device_ptr,
                                                                device_name,
                                                                AccelType::VAAPI);