/src/aom/third_party/fastfeat/fast.c
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1 | | // Copyright (c) 2006, 2008 Edward Rosten |
2 | | // All rights reserved. |
3 | | // |
4 | | // Redistribution and use in source and binary forms, with or without |
5 | | // modification, are permitted provided that the following conditions |
6 | | // are met: |
7 | | // |
8 | | // *Redistributions of source code must retain the above copyright |
9 | | // notice, this list of conditions and the following disclaimer. |
10 | | // |
11 | | // *Redistributions in binary form must reproduce the above copyright |
12 | | // notice, this list of conditions and the following disclaimer in the |
13 | | // documentation and/or other materials provided with the distribution. |
14 | | // |
15 | | // *Neither the name of the University of Cambridge nor the names of |
16 | | // its contributors may be used to endorse or promote products derived |
17 | | // from this software without specific prior written permission. |
18 | | // |
19 | | // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
20 | | // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
21 | | // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
22 | | // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER |
23 | | // OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
24 | | // EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
25 | | // PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
26 | | // PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF |
27 | | // LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING |
28 | | // NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
29 | | // SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
30 | | |
31 | | // clang-format off |
32 | | #include <stdlib.h> |
33 | | #include "fast.h" |
34 | | |
35 | | |
36 | | xy* aom_fast9_detect_nonmax(const byte* im, int xsize, int ysize, int stride, int b, |
37 | | int** ret_scores, int* ret_num_corners) |
38 | 0 | { |
39 | 0 | xy* corners; |
40 | 0 | int num_corners; |
41 | 0 | int* scores; |
42 | 0 | xy* nonmax; |
43 | |
|
44 | 0 | corners = aom_fast9_detect(im, xsize, ysize, stride, b, &num_corners); |
45 | 0 | if(!corners) |
46 | 0 | { |
47 | | // Memory allocation failure |
48 | 0 | *ret_num_corners = -1; |
49 | 0 | return NULL; |
50 | 0 | } |
51 | | // num_corners may be zero. |
52 | 0 | scores = aom_fast9_score(im, stride, corners, num_corners, b); |
53 | 0 | if(!scores && num_corners > 0) |
54 | 0 | { |
55 | | // Memory allocation failure |
56 | 0 | free(corners); |
57 | 0 | *ret_num_corners = -1; |
58 | 0 | return NULL; |
59 | 0 | } |
60 | 0 | nonmax = aom_nonmax_suppression(corners, scores, num_corners, ret_scores, ret_num_corners); |
61 | |
|
62 | 0 | free(corners); |
63 | 0 | free(scores); |
64 | |
|
65 | 0 | return nonmax; |
66 | 0 | } |
67 | | // clang-format on |