common.h (1878B)
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 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_