extend Feature2DAsync interface

modules/cudafeatures2d/include/opencv2/cudafeatures2d.hpp

@@ -233,26 +233,36 @@ private:
 // Feature2DAsync
 //
 
-/** @brief Abstract base class for 2D image feature detectors and descriptor extractors.
- */
 class CV_EXPORTS Feature2DAsync
 {
 public:
-    virtual ~Feature2DAsync() {}
+    virtual ~Feature2DAsync();
 
-    virtual void detectAsync(InputArray image, OutputArray keypoints,
+    virtual void detectAsync(InputArray image,
+                             OutputArray keypoints,
                              InputArray mask = noArray(),
-                             Stream& stream = Stream::Null()) = 0;
-
-    virtual void convert(InputArray gpu_keypoints, std::vector<KeyPoint>& keypoints) = 0;
+                             Stream& stream = Stream::Null());
+
+    virtual void computeAsync(InputArray image,
+                              OutputArray keypoints,
+                              OutputArray descriptors,
+                              Stream& stream = Stream::Null());
+
+    virtual void detectAndComputeAsync(InputArray image,
+                                       InputArray mask,
+                                       OutputArray keypoints,
+                                       OutputArray descriptors,
+                                       bool useProvidedKeypoints=false,
+                                       Stream& stream = Stream::Null());
+
+    virtual void convert(InputArray gpu_keypoints,
+                         std::vector<KeyPoint>& keypoints) = 0;
 };
 
 //
 // FastFeatureDetector
 //
 
-/** @brief Wrapping class for feature detection using the FAST method.
- */
 class CV_EXPORTS FastFeatureDetector : public cv::FastFeatureDetector, public Feature2DAsync
 {
 public:

modules/cudafeatures2d/src/feature2d_async.cpp

+/*M///////////////////////////////////////////////////////////////////////////////////////
+//
+//  IMPORTANT: READ BEFORE DOWNLOADING, COPYING, INSTALLING OR USING.
+//
+//  By downloading, copying, installing or using the software you agree to this license.
+//  If you do not agree to this license, do not download, install,
+//  copy or use the software.
+//
+//
+//                           License Agreement
+//                For Open Source Computer Vision Library
+//
+// Copyright (C) 2000-2008, Intel Corporation, all rights reserved.
+// Copyright (C) 2009, Willow Garage Inc., all rights reserved.
+// Third party copyrights are property of their respective owners.
+//
+// Redistribution and use in source and binary forms, with or without modification,
+// are permitted provided that the following conditions are met:
+//
+//   * Redistribution's of source code must retain the above copyright notice,
+//     this list of conditions and the following disclaimer.
+//
+//   * Redistribution's in binary form must reproduce the above copyright notice,
+//     this list of conditions and the following disclaimer in the documentation
+//     and/or other materials provided with the distribution.
+//
+//   * The name of the copyright holders may not be used to endorse or promote products
+//     derived from this software without specific prior written permission.
+//
+// This software is provided by the copyright holders and contributors "as is" and
+// any express or implied warranties, including, but not limited to, the implied
+// warranties of merchantability and fitness for a particular purpose are disclaimed.
+// In no event shall the Intel Corporation or contributors be liable for any direct,
+// indirect, incidental, special, exemplary, or consequential damages
+// (including, but not limited to, procurement of substitute goods or services;
+// loss of use, data, or profits; or business interruption) however caused
+// and on any theory of liability, whether in contract, strict liability,
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+//
+//M*/
+
+#include "precomp.hpp"
+
+cv::cuda::Feature2DAsync::~Feature2DAsync()
+{
+}
+
+void cv::cuda::Feature2DAsync::detectAsync(InputArray image,
+                                           OutputArray keypoints,
+                                           InputArray mask,
+                                           Stream& stream)
+{
+    if (image.empty())
+    {
+        keypoints.clear();
+        return;
+    }
+
+    detectAndComputeAsync(image, mask, keypoints, noArray(), false, stream);
+}
+
+void cv::cuda::Feature2DAsync::computeAsync(InputArray image,
+                                            OutputArray keypoints,
+                                            OutputArray descriptors,
+                                            Stream& stream)
+{
+    if (image.empty())
+    {
+        descriptors.release();
+        return;
+    }
+
+    detectAndComputeAsync(image, noArray(), keypoints, descriptors, true, stream);
+}
+
+void cv::cuda::Feature2DAsync::detectAndComputeAsync(InputArray /*image*/,
+                                                     InputArray /*mask*/,
+                                                     OutputArray /*keypoints*/,
+                                                     OutputArray /*descriptors*/,
+                                                     bool /*useProvidedKeypoints*/,
+                                                     Stream& /*stream*/)
+{
+    CV_Error(Error::StsNotImplemented, "");
+}