1 /*
2 * Copyright (c) 2010 The WebM project authors. All Rights Reserved.
3 *
4 * Use of this source code is governed by a BSD-style license
5 * that can be found in the LICENSE file in the root of the source
6 * tree. An additional intellectual property rights grant can be found
7 * in the file PATENTS. All contributing project authors may
8 * be found in the AUTHORS file in the root of the source tree.
9 */
10
11 #ifndef VPX_VP9_COMMON_VP9_COMMON_H_
12 #define VPX_VP9_COMMON_VP9_COMMON_H_
13
14 /* Interface header for common constant data structures and lookup tables */
15
16 #include <assert.h>
17
18 #include "./vpx_config.h"
19 #include "vpx_dsp/vpx_dsp_common.h"
20 #include "vpx_mem/vpx_mem.h"
21 #include "vpx/vpx_integer.h"
22 #include "vpx_ports/bitops.h"
23
24 #ifdef __cplusplus
25 extern "C" {
26 #endif
27
28 // Only need this for fixed-size arrays, for structs just assign.
29 #define vp9_copy(dest, src) \
30 { \
31 assert(sizeof(dest) == sizeof(src)); \
32 memcpy(dest, src, sizeof(src)); \
33 }
34
35 // Use this for variably-sized arrays.
36 #define vp9_copy_array(dest, src, n) \
37 { \
38 assert(sizeof(*(dest)) == sizeof(*(src))); \
39 memcpy(dest, src, (n) * sizeof(*(src))); \
40 }
41
42 #define vp9_zero(dest) memset(&(dest), 0, sizeof(dest))
43 #define vp9_zero_array(dest, n) memset(dest, 0, (n) * sizeof(*(dest)))
44
get_unsigned_bits(unsigned int num_values)45 static INLINE int get_unsigned_bits(unsigned int num_values) {
46 return num_values > 0 ? get_msb(num_values) + 1 : 0;
47 }
48
49 #if CONFIG_DEBUG
50 #define CHECK_MEM_ERROR(cm, lval, expr) \
51 do { \
52 (lval) = (expr); \
53 if (!(lval)) \
54 vpx_internal_error(&(cm)->error, VPX_CODEC_MEM_ERROR, \
55 "Failed to allocate " #lval " at %s:%d", __FILE__, \
56 __LINE__); \
57 } while (0)
58 #else
59 #define CHECK_MEM_ERROR(cm, lval, expr) \
60 do { \
61 (lval) = (expr); \
62 if (!(lval)) \
63 vpx_internal_error(&(cm)->error, VPX_CODEC_MEM_ERROR, \
64 "Failed to allocate " #lval); \
65 } while (0)
66 #endif
67
68 #define VP9_SYNC_CODE_0 0x49
69 #define VP9_SYNC_CODE_1 0x83
70 #define VP9_SYNC_CODE_2 0x42
71
72 #define VP9_FRAME_MARKER 0x2
73
74 #ifdef __cplusplus
75 } // extern "C"
76 #endif
77
78 #endif // VPX_VP9_COMMON_VP9_COMMON_H_
79