2 * Copyright (c) 2010 The WebM project authors. All Rights Reserved.
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.
11 #ifndef VP9_COMMON_VP9_COMMON_H_
12 #define VP9_COMMON_VP9_COMMON_H_
14 /* Interface header for common constant data structures and lookup tables */
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"
28 // Only need this for fixed-size arrays, for structs just assign.
29 #define vp9_copy(dest, src) \
31 assert(sizeof(dest) == sizeof(src)); \
32 memcpy(dest, src, sizeof(src)); \
35 // Use this for variably-sized arrays.
36 #define vp9_copy_array(dest, src, n) \
38 assert(sizeof(*dest) == sizeof(*src)); \
39 memcpy(dest, src, n * sizeof(*src)); \
42 #define vp9_zero(dest) memset(&(dest), 0, sizeof(dest))
43 #define vp9_zero_array(dest, n) memset(dest, 0, n * sizeof(*dest))
45 static INLINE int get_unsigned_bits(unsigned int num_values) {
46 return num_values > 0 ? get_msb(num_values) + 1 : 0;
50 #define CHECK_MEM_ERROR(cm, lval, expr) \
54 vpx_internal_error(&cm->error, VPX_CODEC_MEM_ERROR, \
55 "Failed to allocate " #lval " at %s:%d", __FILE__, \
59 #define CHECK_MEM_ERROR(cm, lval, expr) \
63 vpx_internal_error(&cm->error, VPX_CODEC_MEM_ERROR, \
64 "Failed to allocate " #lval); \
68 #define VP9_SYNC_CODE_0 0x49
69 #define VP9_SYNC_CODE_1 0x83
70 #define VP9_SYNC_CODE_2 0x42
72 #define VP9_FRAME_MARKER 0x2
78 #endif // VP9_COMMON_VP9_COMMON_H_