ffmpeg_files/intreadwrite.h

   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 #ifndef MP_AVUTIL_INTREADWRITE_H
  20 #define MP_AVUTIL_INTREADWRITE_H
  21
  22 #include <stdint.h>
  23 #include "config.h"
  24 #include "bswap.h"
  25
  26 #ifndef AV_RB16
  27 #define AV_RB16(x)  ((((const uint8_t*)(x))[0] << 8) | \
  28                       ((const uint8_t*)(x))[1])
  29 #endif
  30 #ifndef AV_WB16
  31 #define AV_WB16(p, d) do { \
  32                     ((uint8_t*)(p))[1] = (d); \
  33                     ((uint8_t*)(p))[0] = (d)>>8; } while(0)
  34 #endif
  35
  36 #ifndef AV_RL16
  37 #define AV_RL16(x)  ((((const uint8_t*)(x))[1] << 8) | \
  38                       ((const uint8_t*)(x))[0])
  39 #endif
  40 #ifndef AV_WL16
  41 #define AV_WL16(p, d) do { \
  42                     ((uint8_t*)(p))[0] = (d); \
  43                     ((uint8_t*)(p))[1] = (d)>>8; } while(0)
  44 #endif
  45
  46 #ifndef AV_RB32
  47 #define AV_RB32(x)  ((((const uint8_t*)(x))[0] << 24) | \
  48                      (((const uint8_t*)(x))[1] << 16) | \
  49                      (((const uint8_t*)(x))[2] <<  8) | \
  50                       ((const uint8_t*)(x))[3])
  51 #endif
  52 #ifndef AV_WB32
  53 #define AV_WB32(p, d) do { \
  54                     ((uint8_t*)(p))[3] = (d); \
  55                     ((uint8_t*)(p))[2] = (d)>>8; \
  56                     ((uint8_t*)(p))[1] = (d)>>16; \
  57                     ((uint8_t*)(p))[0] = (d)>>24; } while(0)
  58 #endif
  59
  60 #ifndef AV_RL32
  61 #define AV_RL32(x) ((((const uint8_t*)(x))[3] << 24) | \
  62                     (((const uint8_t*)(x))[2] << 16) | \
  63                     (((const uint8_t*)(x))[1] <<  8) | \
  64                      ((const uint8_t*)(x))[0])
  65 #endif
  66 #ifndef AV_WL32
  67 #define AV_WL32(p, d) do { \
  68                     ((uint8_t*)(p))[0] = (d); \
  69                     ((uint8_t*)(p))[1] = (d)>>8; \
  70                     ((uint8_t*)(p))[2] = (d)>>16; \
  71                     ((uint8_t*)(p))[3] = (d)>>24; } while(0)
  72 #endif
  73
  74 #ifndef AV_RB64
  75 #define AV_RB64(x)  (((uint64_t)((const uint8_t*)(x))[0] << 56) | \
  76                      ((uint64_t)((const uint8_t*)(x))[1] << 48) | \
  77                      ((uint64_t)((const uint8_t*)(x))[2] << 40) | \
  78                      ((uint64_t)((const uint8_t*)(x))[3] << 32) | \
  79                      ((uint64_t)((const uint8_t*)(x))[4] << 24) | \
  80                      ((uint64_t)((const uint8_t*)(x))[5] << 16) | \
  81                      ((uint64_t)((const uint8_t*)(x))[6] <<  8) | \
  82                       (uint64_t)((const uint8_t*)(x))[7])
  83 #endif
  84 #ifndef AV_WB64
  85 #define AV_WB64(p, d) do { \
  86                     ((uint8_t*)(p))[7] = (d);     \
  87                     ((uint8_t*)(p))[6] = (d)>>8;  \
  88                     ((uint8_t*)(p))[5] = (d)>>16; \
  89                     ((uint8_t*)(p))[4] = (d)>>24; \
  90                     ((uint8_t*)(p))[3] = (d)>>32; \
  91                     ((uint8_t*)(p))[2] = (d)>>40; \
  92                     ((uint8_t*)(p))[1] = (d)>>48; \
  93                     ((uint8_t*)(p))[0] = (d)>>56; } while(0)
  94 #endif
  95
  96 #ifndef AV_RL64
  97 #define AV_RL64(x)  (((uint64_t)((const uint8_t*)(x))[7] << 56) | \
  98                      ((uint64_t)((const uint8_t*)(x))[6] << 48) | \
  99                      ((uint64_t)((const uint8_t*)(x))[5] << 40) | \
 100                      ((uint64_t)((const uint8_t*)(x))[4] << 32) | \
 101                      ((uint64_t)((const uint8_t*)(x))[3] << 24) | \
 102                      ((uint64_t)((const uint8_t*)(x))[2] << 16) | \
 103                      ((uint64_t)((const uint8_t*)(x))[1] <<  8) | \
 104                       (uint64_t)((const uint8_t*)(x))[0])
 105 #endif
 106 #ifndef AV_WL64
 107 #define AV_WL64(p, d) do { \
 108                     ((uint8_t*)(p))[0] = (d);     \
 109                     ((uint8_t*)(p))[1] = (d)>>8;  \
 110                     ((uint8_t*)(p))[2] = (d)>>16; \
 111                     ((uint8_t*)(p))[3] = (d)>>24; \
 112                     ((uint8_t*)(p))[4] = (d)>>32; \
 113                     ((uint8_t*)(p))[5] = (d)>>40; \
 114                     ((uint8_t*)(p))[6] = (d)>>48; \
 115                     ((uint8_t*)(p))[7] = (d)>>56; } while(0)
 116 #endif
 117
 118 #ifdef WORDS_BIGENDIAN
 119 #   define AV_RN(s, p)    AV_RB##s(p)
 120 #   define AV_WN(s, p, v) AV_WB##s(p, v)
 121 #else
 122 #   define AV_RN(s, p)    AV_RL##s(p)
 123 #   define AV_WN(s, p, v) AV_WL##s(p, v)
 124 #endif
 125
 126 #ifndef AV_RN16
 127 #   define AV_RN16(p) AV_RN(16, p)
 128 #endif
 129
 130 #ifndef AV_RN32
 131 #   define AV_RN32(p) AV_RN(32, p)
 132 #endif
 133
 134 #ifndef AV_RN64
 135 #   define AV_RN64(p) AV_RN(64, p)
 136 #endif
 137
 138 #ifndef AV_WN16
 139 #   define AV_WN16(p, v) AV_WN(16, p, v)
 140 #endif
 141
 142 #ifndef AV_WN32
 143 #   define AV_WN32(p, v) AV_WN(32, p, v)
 144 #endif
 145
 146 #ifndef AV_WN64
 147 #   define AV_WN64(p, v) AV_WN(64, p, v)
 148 #endif
 149
 150 #ifdef WORDS_BIGENDIAN
 151 #   define AV_RB(s, p)    AV_RN(s, p)
 152 #   define AV_WB(s, p, v) AV_WN(s, p, v)
 153 #   define AV_RL(s, p)    bswap_##s(AV_RN(s, p))
 154 #   define AV_WL(s, p, v) AV_WN(s, p, bswap_##s(v))
 155 #else
 156 #   define AV_RB(s, p)    bswap_##s(AV_RN(s, p))
 157 #   define AV_WB(s, p, v) AV_WN(s, p, bswap_##s(v))
 158 #   define AV_RL(s, p)    AV_RN(s, p)
 159 #   define AV_WL(s, p, v) AV_WN(s, p, v)
 160 #endif
 161
 162 #define AV_RB8(x)     (((const uint8_t*)(x))[0])
 163 #define AV_WB8(p, d)  do { ((uint8_t*)(p))[0] = (d); } while(0)
 164
 165 #define AV_RL8(x)     AV_RB8(x)
 166 #define AV_WL8(p, d)  AV_WB8(p, d)
 167
 168 #ifndef AV_RB16
 169 #   define AV_RB16(p)    AV_RB(16, p)
 170 #endif
 171 #ifndef AV_WB16
 172 #   define AV_WB16(p, v) AV_WB(16, p, v)
 173 #endif
 174
 175 #ifndef AV_RL16
 176 #   define AV_RL16(p)    AV_RL(16, p)
 177 #endif
 178 #ifndef AV_WL16
 179 #   define AV_WL16(p, v) AV_WL(16, p, v)
 180 #endif
 181
 182 #ifndef AV_RB32
 183 #   define AV_RB32(p)    AV_RB(32, p)
 184 #endif
 185 #ifndef AV_WB32
 186 #   define AV_WB32(p, v) AV_WB(32, p, v)
 187 #endif
 188
 189 #ifndef AV_RL32
 190 #   define AV_RL32(p)    AV_RL(32, p)
 191 #endif
 192 #ifndef AV_WL32
 193 #   define AV_WL32(p, v) AV_WL(32, p, v)
 194 #endif
 195
 196 #ifndef AV_RB64
 197 #   define AV_RB64(p)    AV_RB(64, p)
 198 #endif
 199 #ifndef AV_WB64
 200 #   define AV_WB64(p, v) AV_WB(64, p, v)
 201 #endif
 202
 203 #ifndef AV_RL64
 204 #   define AV_RL64(p)    AV_RL(64, p)
 205 #endif
 206 #ifndef AV_WL64
 207 #   define AV_WL64(p, v) AV_WL(64, p, v)
 208 #endif
 209
 210 #define AV_RB24(x)  ((((const uint8_t*)(x))[0] << 16) | \
 211                      (((const uint8_t*)(x))[1] <<  8) | \
 212                       ((const uint8_t*)(x))[2])
 213 #define AV_WB24(p, d) do { \
 214                     ((uint8_t*)(p))[2] = (d); \
 215                     ((uint8_t*)(p))[1] = (d)>>8; \
 216                     ((uint8_t*)(p))[0] = (d)>>16; } while(0)
 217
 218 #define AV_RL24(x)  ((((const uint8_t*)(x))[2] << 16) | \
 219                      (((const uint8_t*)(x))[1] <<  8) | \
 220                       ((const uint8_t*)(x))[0])
 221 #define AV_WL24(p, d) do { \
 222                     ((uint8_t*)(p))[0] = (d); \
 223                     ((uint8_t*)(p))[1] = (d)>>8; \
 224                     ((uint8_t*)(p))[2] = (d)>>16; } while(0)
 225
 226 #endif /* AVUTIL_INTREADWRITE_H */