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1 | /* | ||
2 | * This file is part of FFmpeg. | ||
3 | * | ||
4 | * FFmpeg is free software; you can redistribute it and/or | ||
5 | * modify it under the terms of the GNU Lesser General Public | ||
6 | * License as published by the Free Software Foundation; either | ||
7 | * version 2.1 of the License, or (at your option) any later version. | ||
8 | * | ||
9 | * FFmpeg is distributed in the hope that it will be useful, | ||
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
12 | * Lesser General Public License for more details. | ||
13 | * | ||
14 | * You should have received a copy of the GNU Lesser General Public | ||
15 | * License along with FFmpeg; if not, write to the Free Software | ||
16 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | ||
17 | */ | ||
18 | |||
19 | #include <stddef.h> | ||
20 | #include <stdint.h> | ||
21 | |||
22 | #include "mem.h" | ||
23 | #include "tdrdi.h" | ||
24 | |||
25 | 4 | AV3DReferenceDisplaysInfo *av_tdrdi_alloc(unsigned int nb_displays, size_t *out_size) | |
26 | { | ||
27 | struct TestStruct { | ||
28 | AV3DReferenceDisplaysInfo p; | ||
29 | AV3DReferenceDisplay b; | ||
30 | }; | ||
31 | 4 | const size_t entries_offset = offsetof(struct TestStruct, b); | |
32 | 4 | size_t size = entries_offset; | |
33 | AV3DReferenceDisplaysInfo *tdrdi; | ||
34 | |||
35 |
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4 | if (nb_displays > (SIZE_MAX - size) / sizeof(AV3DReferenceDisplay)) |
36 | ✗ | return NULL; | |
37 | 4 | size += sizeof(AV3DReferenceDisplay) * nb_displays; | |
38 | |||
39 | 4 | tdrdi = av_mallocz(size); | |
40 |
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4 | if (!tdrdi) |
41 | ✗ | return NULL; | |
42 | |||
43 | 4 | tdrdi->num_ref_displays = nb_displays; | |
44 | 4 | tdrdi->entry_size = sizeof(AV3DReferenceDisplay); | |
45 | 4 | tdrdi->entries_offset = entries_offset; | |
46 | |||
47 |
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4 | if (out_size) |
48 | 4 | *out_size = size; | |
49 | |||
50 | 4 | return tdrdi; | |
51 | } | ||
52 |