2016-08-10 03:40:53 +03:00
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/*
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2016-11-29 02:26:06 +03:00
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* Copyright (c) 2016, Alliance for Open Media. All rights reserved
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2016-08-10 03:40:53 +03:00
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*
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2016-11-29 02:26:06 +03:00
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* This source code is subject to the terms of the BSD 2 Clause License and
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* the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
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* was not distributed with this source code in the LICENSE file, you can
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* obtain it at www.aomedia.org/license/software. If the Alliance for Open
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* Media Patent License 1.0 was not distributed with this source code in the
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* PATENTS file, you can obtain it at www.aomedia.org/license/patent.
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2016-08-10 03:40:53 +03:00
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*/
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#include <stdlib.h>
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#include <stdio.h>
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#include <memory.h>
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#include <math.h>
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#include <assert.h>
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#include "third_party/fastfeat/fast.h"
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2016-09-06 21:25:04 +03:00
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#include "av1/encoder/corner_detect.h"
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2016-08-10 03:40:53 +03:00
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// Fast_9 wrapper
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#define FAST_BARRIER 40
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2016-09-06 21:25:04 +03:00
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int fast_corner_detect(unsigned char *buf, int width, int height, int stride,
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int *points, int max_points) {
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2016-08-10 03:40:53 +03:00
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int num_points;
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2016-09-06 21:25:04 +03:00
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xy *const frm_corners_xy = fast9_detect_nonmax(buf, width, height, stride,
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FAST_BARRIER, &num_points);
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2016-08-10 03:40:53 +03:00
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num_points = (num_points <= max_points ? num_points : max_points);
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if (num_points > 0 && frm_corners_xy) {
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2016-09-06 21:25:04 +03:00
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memcpy(points, frm_corners_xy, sizeof(*frm_corners_xy) * num_points);
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2016-08-10 03:40:53 +03:00
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free(frm_corners_xy);
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return num_points;
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}
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2016-09-06 21:25:04 +03:00
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free(frm_corners_xy);
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return 0;
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2016-08-10 03:40:53 +03:00
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}
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