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 #ifndef AOM_AV1_COMMON_COMMON_H_
13 #define AOM_AV1_COMMON_COMMON_H_
14
15 /* Interface header for common constant data structures and lookup tables */
16
17 #include <assert.h>
18
19 #include "aom_dsp/aom_dsp_common.h"
20 #include "aom_mem/aom_mem.h"
21 #include "aom/aom_integer.h"
22 #include "aom_ports/bitops.h"
23 #include "config/aom_config.h"
24
25 #ifdef __cplusplus
26 extern "C" {
27 #endif
28
29 // Only need this for fixed-size arrays, for structs just assign.
30 #define av1_copy(dest, src) \
31 do { \
32 assert(sizeof(dest) == sizeof(src)); \
33 memcpy(dest, src, sizeof(src)); \
34 } while (0)
35
36 // Use this for variably-sized arrays.
37 #define av1_copy_array(dest, src, n) \
38 do { \
39 assert(sizeof(*(dest)) == sizeof(*(src))); \
40 memcpy(dest, src, n * sizeof(*(src))); \
41 } while (0)
42
43 #define av1_zero(dest) memset(&(dest), 0, sizeof(dest))
44 #define av1_zero_array(dest, n) memset(dest, 0, n * sizeof(*(dest)))
45
get_unsigned_bits(unsigned int num_values)46 static inline int get_unsigned_bits(unsigned int num_values) {
47 return num_values > 0 ? get_msb(num_values) + 1 : 0;
48 }
49
50 #define CHECK_MEM_ERROR(cm, lval, expr) \
51 AOM_CHECK_MEM_ERROR((cm)->error, lval, expr)
52
53 #define AOM_FRAME_MARKER 0x2
54
55 #define AV1_MIN_TILE_SIZE_BYTES 1
56
57 #ifdef __cplusplus
58 } // extern "C"
59 #endif
60
61 #endif // AOM_AV1_COMMON_COMMON_H_
62