| /* |
| * Copyright (c) 2016, Alliance for Open Media. All rights reserved |
| * |
| * This source code is subject to the terms of the BSD 2 Clause License and |
| * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License |
| * was not distributed with this source code in the LICENSE file, you can |
| * obtain it at www.aomedia.org/license/software. If the Alliance for Open |
| * Media Patent License 1.0 was not distributed with this source code in the |
| * PATENTS file, you can obtain it at www.aomedia.org/license/patent. |
| */ |
| |
| #include <stdlib.h> |
| #include <stdio.h> |
| #include <memory.h> |
| #include <math.h> |
| #include <assert.h> |
| |
| #include "third_party/fastfeat/fast.h" |
| |
| #include "aom_dsp/flow_estimation/corner_detect.h" |
| |
| // Fast_9 wrapper |
| #define FAST_BARRIER 18 |
| int av1_fast_corner_detect(unsigned char *buf, int width, int height, |
| int stride, int *points, int max_points) { |
| int num_points; |
| xy *const frm_corners_xy = aom_fast9_detect_nonmax(buf, width, height, stride, |
| FAST_BARRIER, &num_points); |
| num_points = (num_points <= max_points ? num_points : max_points); |
| if (num_points > 0 && frm_corners_xy) { |
| memcpy(points, frm_corners_xy, sizeof(*frm_corners_xy) * num_points); |
| free(frm_corners_xy); |
| return num_points; |
| } |
| free(frm_corners_xy); |
| return 0; |
| } |