Line data    Source code

       1             : /*
       2             :  * Copyright (c) 2016, Alliance for Open Media. All rights reserved
       3             :  *
       4             :  * This source code is subject to the terms of the BSD 2 Clause License and
       5             :  * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
       6             :  * was not distributed with this source code in the LICENSE file, you can
       7             :  * obtain it at www.aomedia.org/license/software. If the Alliance for Open
       8             :  * Media Patent License 1.0 was not distributed with this source code in the
       9             :  * PATENTS file, you can obtain it at www.aomedia.org/license/patent.
      10             :  */
      11             : 
      12             : #include <stdlib.h>
      13             : #include <stdio.h>
      14             : #include <memory.h>
      15             : #include <math.h>
      16             : #include <assert.h>
      17             : 
      18             : #include "third_party/fastfeat/fast.h"
      19             : 
      20             : #include "av1/encoder/corner_detect.h"
      21             : 
      22             : // Fast_9 wrapper
      23             : #define FAST_BARRIER 18
      24           0 : int fast_corner_detect(unsigned char *buf, int width, int height, int stride,
      25             :                        int *points, int max_points) {
      26             :   int num_points;
      27           0 :   xy *const frm_corners_xy = fast9_detect_nonmax(buf, width, height, stride,
      28             :                                                  FAST_BARRIER, &num_points);
      29           0 :   num_points = (num_points <= max_points ? num_points : max_points);
      30           0 :   if (num_points > 0 && frm_corners_xy) {
      31           0 :     memcpy(points, frm_corners_xy, sizeof(*frm_corners_xy) * num_points);
      32           0 :     free(frm_corners_xy);
      33           0 :     return num_points;
      34             :   }
      35           0 :   free(frm_corners_xy);
      36           0 :   return 0;
      37             : }