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
av1_fast_corner_detect(unsigned char * buf,int width,int height,int stride,int * points,int max_points)24 int av1_fast_corner_detect(unsigned char *buf, int width, int height,
25 int stride, int *points, int max_points) {
26 int num_points;
27 xy *const frm_corners_xy = aom_fast9_detect_nonmax(buf, width, height, stride,
28 FAST_BARRIER, &num_points);
29 num_points = (num_points <= max_points ? num_points : max_points);
30 if (num_points > 0 && frm_corners_xy) {
31 memcpy(points, frm_corners_xy, sizeof(*frm_corners_xy) * num_points);
32 free(frm_corners_xy);
33 return num_points;
34 }
35 free(frm_corners_xy);
36 return 0;
37 }
38