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2134
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1 /*
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2 * This file is part of FFmpeg.
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3 *
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4 * FFmpeg is free software; you can redistribute it and/or
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5 * modify it under the terms of the GNU Lesser General Public
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6 * License as published by the Free Software Foundation; either
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7 * version 2.1 of the License, or (at your option) any later version.
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8 *
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9 * FFmpeg is distributed in the hope that it will be useful,
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10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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12 * Lesser General Public License for more details.
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13 *
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14 * You should have received a copy of the GNU Lesser General Public
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15 * License along with FFmpeg; if not, write to the Free Software
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16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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17 */
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18
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19 #ifndef AVUTIL_INTREADWRITE_H
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20 #define AVUTIL_INTREADWRITE_H
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21
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22 #include <stdint.h>
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23 #include "libavutil/avconfig.h"
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24 #include "attributes.h"
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25 #include "bswap.h"
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26
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27 typedef union {
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28 uint64_t u64;
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29 uint32_t u32[2];
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30 uint16_t u16[4];
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31 uint8_t u8 [8];
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32 double f64;
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33 float f32[2];
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34 } av_alias av_alias64;
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35
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36 typedef union {
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37 uint32_t u32;
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38 uint16_t u16[2];
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39 uint8_t u8 [4];
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40 float f32;
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41 } av_alias av_alias32;
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42
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43 typedef union {
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44 uint16_t u16;
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45 uint8_t u8 [2];
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46 } av_alias av_alias16;
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47
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48 /*
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49 * Arch-specific headers can provide any combination of
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50 * AV_[RW][BLN](16|24|32|48|64) and AV_(COPY|SWAP|ZERO)(64|128) macros.
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51 * Preprocessor symbols must be defined, even if these are implemented
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52 * as inline functions.
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53 */
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54
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55 #ifdef HAVE_AV_CONFIG_H
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56
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57 #include "config.h"
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58
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59 #if ARCH_ARM
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60 # include "arm/intreadwrite.h"
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61 #elif ARCH_AVR32
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62 # include "avr32/intreadwrite.h"
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63 #elif ARCH_MIPS
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64 # include "mips/intreadwrite.h"
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65 #elif ARCH_PPC
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66 # include "ppc/intreadwrite.h"
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67 #elif ARCH_TOMI
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68 # include "tomi/intreadwrite.h"
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69 #elif ARCH_X86
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70 # include "x86/intreadwrite.h"
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71 #endif
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72
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73 #endif /* HAVE_AV_CONFIG_H */
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74
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75 /*
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76 * Map AV_RNXX <-> AV_R[BL]XX for all variants provided by per-arch headers.
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77 */
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78
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79 #if AV_HAVE_BIGENDIAN
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80
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81 # if defined(AV_RN16) && !defined(AV_RB16)
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82 # define AV_RB16(p) AV_RN16(p)
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83 # elif !defined(AV_RN16) && defined(AV_RB16)
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84 # define AV_RN16(p) AV_RB16(p)
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85 # endif
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86
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87 # if defined(AV_WN16) && !defined(AV_WB16)
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88 # define AV_WB16(p, v) AV_WN16(p, v)
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89 # elif !defined(AV_WN16) && defined(AV_WB16)
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90 # define AV_WN16(p, v) AV_WB16(p, v)
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91 # endif
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92
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93 # if defined(AV_RN24) && !defined(AV_RB24)
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94 # define AV_RB24(p) AV_RN24(p)
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95 # elif !defined(AV_RN24) && defined(AV_RB24)
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96 # define AV_RN24(p) AV_RB24(p)
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97 # endif
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98
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99 # if defined(AV_WN24) && !defined(AV_WB24)
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100 # define AV_WB24(p, v) AV_WN24(p, v)
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101 # elif !defined(AV_WN24) && defined(AV_WB24)
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102 # define AV_WN24(p, v) AV_WB24(p, v)
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103 # endif
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104
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105 # if defined(AV_RN32) && !defined(AV_RB32)
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106 # define AV_RB32(p) AV_RN32(p)
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107 # elif !defined(AV_RN32) && defined(AV_RB32)
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108 # define AV_RN32(p) AV_RB32(p)
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109 # endif
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110
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111 # if defined(AV_WN32) && !defined(AV_WB32)
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112 # define AV_WB32(p, v) AV_WN32(p, v)
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113 # elif !defined(AV_WN32) && defined(AV_WB32)
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114 # define AV_WN32(p, v) AV_WB32(p, v)
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115 # endif
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116
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117 # if defined(AV_RN48) && !defined(AV_RB48)
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118 # define AV_RB48(p) AV_RN48(p)
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119 # elif !defined(AV_RN48) && defined(AV_RB48)
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120 # define AV_RN48(p) AV_RB48(p)
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121 # endif
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122
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123 # if defined(AV_WN48) && !defined(AV_WB48)
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124 # define AV_WB48(p, v) AV_WN48(p, v)
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125 # elif !defined(AV_WN48) && defined(AV_WB48)
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126 # define AV_WN48(p, v) AV_WB48(p, v)
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127 # endif
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128
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129 # if defined(AV_RN64) && !defined(AV_RB64)
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130 # define AV_RB64(p) AV_RN64(p)
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131 # elif !defined(AV_RN64) && defined(AV_RB64)
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132 # define AV_RN64(p) AV_RB64(p)
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133 # endif
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134
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135 # if defined(AV_WN64) && !defined(AV_WB64)
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136 # define AV_WB64(p, v) AV_WN64(p, v)
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137 # elif !defined(AV_WN64) && defined(AV_WB64)
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138 # define AV_WN64(p, v) AV_WB64(p, v)
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139 # endif
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140
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141 #else /* AV_HAVE_BIGENDIAN */
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142
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143 # if defined(AV_RN16) && !defined(AV_RL16)
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144 # define AV_RL16(p) AV_RN16(p)
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145 # elif !defined(AV_RN16) && defined(AV_RL16)
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146 # define AV_RN16(p) AV_RL16(p)
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147 # endif
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148
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149 # if defined(AV_WN16) && !defined(AV_WL16)
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150 # define AV_WL16(p, v) AV_WN16(p, v)
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151 # elif !defined(AV_WN16) && defined(AV_WL16)
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152 # define AV_WN16(p, v) AV_WL16(p, v)
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153 # endif
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154
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155 # if defined(AV_RN24) && !defined(AV_RL24)
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156 # define AV_RL24(p) AV_RN24(p)
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157 # elif !defined(AV_RN24) && defined(AV_RL24)
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158 # define AV_RN24(p) AV_RL24(p)
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159 # endif
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160
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161 # if defined(AV_WN24) && !defined(AV_WL24)
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162 # define AV_WL24(p, v) AV_WN24(p, v)
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163 # elif !defined(AV_WN24) && defined(AV_WL24)
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164 # define AV_WN24(p, v) AV_WL24(p, v)
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165 # endif
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166
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167 # if defined(AV_RN32) && !defined(AV_RL32)
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168 # define AV_RL32(p) AV_RN32(p)
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169 # elif !defined(AV_RN32) && defined(AV_RL32)
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170 # define AV_RN32(p) AV_RL32(p)
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171 # endif
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172
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173 # if defined(AV_WN32) && !defined(AV_WL32)
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174 # define AV_WL32(p, v) AV_WN32(p, v)
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175 # elif !defined(AV_WN32) && defined(AV_WL32)
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176 # define AV_WN32(p, v) AV_WL32(p, v)
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177 # endif
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178
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179 # if defined(AV_RN48) && !defined(AV_RL48)
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180 # define AV_RL48(p) AV_RN48(p)
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181 # elif !defined(AV_RN48) && defined(AV_RL48)
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182 # define AV_RN48(p) AV_RL48(p)
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183 # endif
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184
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185 # if defined(AV_WN48) && !defined(AV_WL48)
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186 # define AV_WL48(p, v) AV_WN48(p, v)
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187 # elif !defined(AV_WN48) && defined(AV_WL48)
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188 # define AV_WN48(p, v) AV_WL48(p, v)
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189 # endif
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190
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191 # if defined(AV_RN64) && !defined(AV_RL64)
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192 # define AV_RL64(p) AV_RN64(p)
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193 # elif !defined(AV_RN64) && defined(AV_RL64)
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194 # define AV_RN64(p) AV_RL64(p)
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195 # endif
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196
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197 # if defined(AV_WN64) && !defined(AV_WL64)
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198 # define AV_WL64(p, v) AV_WN64(p, v)
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199 # elif !defined(AV_WN64) && defined(AV_WL64)
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200 # define AV_WN64(p, v) AV_WL64(p, v)
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201 # endif
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202
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203 #endif /* !AV_HAVE_BIGENDIAN */
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204
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205 /*
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206 * Define AV_[RW]N helper macros to simplify definitions not provided
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207 * by per-arch headers.
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208 */
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209
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210 #if defined(__GNUC__) && !defined(__TI_COMPILER_VERSION__)
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211
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212 union unaligned_64 { uint64_t l; } __attribute__((packed)) av_alias;
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213 union unaligned_32 { uint32_t l; } __attribute__((packed)) av_alias;
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214 union unaligned_16 { uint16_t l; } __attribute__((packed)) av_alias;
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215
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216 # define AV_RN(s, p) (((const union unaligned_##s *) (p))->l)
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217 # define AV_WN(s, p, v) ((((union unaligned_##s *) (p))->l) = (v))
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218
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219 #elif defined(__DECC)
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220
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221 # define AV_RN(s, p) (*((const __unaligned uint##s##_t*)(p)))
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222 # define AV_WN(s, p, v) (*((__unaligned uint##s##_t*)(p)) = (v))
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223
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224 #elif AV_HAVE_FAST_UNALIGNED
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225
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226 # define AV_RN(s, p) (((const av_alias##s*)(p))->u##s)
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227 # define AV_WN(s, p, v) (((av_alias##s*)(p))->u##s = (v))
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228
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229 #else
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230
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231 #ifndef AV_RB16
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232 # define AV_RB16(x) \
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233 ((((const uint8_t*)(x))[0] << 8) | \
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234 ((const uint8_t*)(x))[1])
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235 #endif
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236 #ifndef AV_WB16
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237 # define AV_WB16(p, darg) do { \
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238 unsigned d = (darg); \
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239 ((uint8_t*)(p))[1] = (d); \
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240 ((uint8_t*)(p))[0] = (d)>>8; \
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241 } while(0)
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242 #endif
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243
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244 #ifndef AV_RL16
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245 # define AV_RL16(x) \
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246 ((((const uint8_t*)(x))[1] << 8) | \
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247 ((const uint8_t*)(x))[0])
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248 #endif
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249 #ifndef AV_WL16
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250 # define AV_WL16(p, darg) do { \
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251 unsigned d = (darg); \
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252 ((uint8_t*)(p))[0] = (d); \
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253 ((uint8_t*)(p))[1] = (d)>>8; \
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254 } while(0)
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255 #endif
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256
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257 #ifndef AV_RB32
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258 # define AV_RB32(x) \
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259 (((uint32_t)((const uint8_t*)(x))[0] << 24) | \
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260 (((const uint8_t*)(x))[1] << 16) | \
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261 (((const uint8_t*)(x))[2] << 8) | \
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262 ((const uint8_t*)(x))[3])
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263 #endif
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264 #ifndef AV_WB32
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265 # define AV_WB32(p, darg) do { \
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266 unsigned d = (darg); \
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267 ((uint8_t*)(p))[3] = (d); \
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268 ((uint8_t*)(p))[2] = (d)>>8; \
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269 ((uint8_t*)(p))[1] = (d)>>16; \
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270 ((uint8_t*)(p))[0] = (d)>>24; \
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271 } while(0)
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272 #endif
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273
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274 #ifndef AV_RL32
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275 # define AV_RL32(x) \
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276 (((uint32_t)((const uint8_t*)(x))[3] << 24) | \
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277 (((const uint8_t*)(x))[2] << 16) | \
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278 (((const uint8_t*)(x))[1] << 8) | \
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279 ((const uint8_t*)(x))[0])
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280 #endif
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281 #ifndef AV_WL32
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282 # define AV_WL32(p, darg) do { \
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283 unsigned d = (darg); \
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284 ((uint8_t*)(p))[0] = (d); \
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285 ((uint8_t*)(p))[1] = (d)>>8; \
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286 ((uint8_t*)(p))[2] = (d)>>16; \
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287 ((uint8_t*)(p))[3] = (d)>>24; \
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288 } while(0)
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289 #endif
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290
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291 #ifndef AV_RB64
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292 # define AV_RB64(x) \
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293 (((uint64_t)((const uint8_t*)(x))[0] << 56) | \
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294 ((uint64_t)((const uint8_t*)(x))[1] << 48) | \
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295 ((uint64_t)((const uint8_t*)(x))[2] << 40) | \
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296 ((uint64_t)((const uint8_t*)(x))[3] << 32) | \
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297 ((uint64_t)((const uint8_t*)(x))[4] << 24) | \
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298 ((uint64_t)((const uint8_t*)(x))[5] << 16) | \
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299 ((uint64_t)((const uint8_t*)(x))[6] << 8) | \
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300 (uint64_t)((const uint8_t*)(x))[7])
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301 #endif
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302 #ifndef AV_WB64
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303 # define AV_WB64(p, darg) do { \
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304 uint64_t d = (darg); \
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305 ((uint8_t*)(p))[7] = (d); \
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306 ((uint8_t*)(p))[6] = (d)>>8; \
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307 ((uint8_t*)(p))[5] = (d)>>16; \
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308 ((uint8_t*)(p))[4] = (d)>>24; \
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309 ((uint8_t*)(p))[3] = (d)>>32; \
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310 ((uint8_t*)(p))[2] = (d)>>40; \
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311 ((uint8_t*)(p))[1] = (d)>>48; \
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312 ((uint8_t*)(p))[0] = (d)>>56; \
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313 } while(0)
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314 #endif
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315
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316 #ifndef AV_RL64
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317 # define AV_RL64(x) \
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318 (((uint64_t)((const uint8_t*)(x))[7] << 56) | \
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319 ((uint64_t)((const uint8_t*)(x))[6] << 48) | \
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320 ((uint64_t)((const uint8_t*)(x))[5] << 40) | \
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321 ((uint64_t)((const uint8_t*)(x))[4] << 32) | \
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322 ((uint64_t)((const uint8_t*)(x))[3] << 24) | \
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323 ((uint64_t)((const uint8_t*)(x))[2] << 16) | \
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324 ((uint64_t)((const uint8_t*)(x))[1] << 8) | \
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325 (uint64_t)((const uint8_t*)(x))[0])
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326 #endif
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327 #ifndef AV_WL64
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328 # define AV_WL64(p, darg) do { \
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329 uint64_t d = (darg); \
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330 ((uint8_t*)(p))[0] = (d); \
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331 ((uint8_t*)(p))[1] = (d)>>8; \
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332 ((uint8_t*)(p))[2] = (d)>>16; \
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333 ((uint8_t*)(p))[3] = (d)>>24; \
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334 ((uint8_t*)(p))[4] = (d)>>32; \
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335 ((uint8_t*)(p))[5] = (d)>>40; \
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336 ((uint8_t*)(p))[6] = (d)>>48; \
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337 ((uint8_t*)(p))[7] = (d)>>56; \
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338 } while(0)
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339 #endif
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340
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341 #if AV_HAVE_BIGENDIAN
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342 # define AV_RN(s, p) AV_RB##s(p)
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343 # define AV_WN(s, p, v) AV_WB##s(p, v)
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344 #else
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345 # define AV_RN(s, p) AV_RL##s(p)
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346 # define AV_WN(s, p, v) AV_WL##s(p, v)
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347 #endif
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348
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349 #endif /* HAVE_FAST_UNALIGNED */
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350
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351 #ifndef AV_RN16
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352 # define AV_RN16(p) AV_RN(16, p)
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353 #endif
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354
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355 #ifndef AV_RN32
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356 # define AV_RN32(p) AV_RN(32, p)
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357 #endif
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358
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359 #ifndef AV_RN64
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360 # define AV_RN64(p) AV_RN(64, p)
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361 #endif
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362
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363 #ifndef AV_WN16
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364 # define AV_WN16(p, v) AV_WN(16, p, v)
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365 #endif
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366
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367 #ifndef AV_WN32
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368 # define AV_WN32(p, v) AV_WN(32, p, v)
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369 #endif
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370
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371 #ifndef AV_WN64
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372 # define AV_WN64(p, v) AV_WN(64, p, v)
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373 #endif
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374
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375 #if AV_HAVE_BIGENDIAN
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376 # define AV_RB(s, p) AV_RN##s(p)
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377 # define AV_WB(s, p, v) AV_WN##s(p, v)
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378 # define AV_RL(s, p) av_bswap##s(AV_RN##s(p))
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379 # define AV_WL(s, p, v) AV_WN##s(p, av_bswap##s(v))
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380 #else
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381 # define AV_RB(s, p) av_bswap##s(AV_RN##s(p))
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382 # define AV_WB(s, p, v) AV_WN##s(p, av_bswap##s(v))
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383 # define AV_RL(s, p) AV_RN##s(p)
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384 # define AV_WL(s, p, v) AV_WN##s(p, v)
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385 #endif
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386
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387 #define AV_RB8(x) (((const uint8_t*)(x))[0])
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388 #define AV_WB8(p, d) do { ((uint8_t*)(p))[0] = (d); } while(0)
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389
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390 #define AV_RL8(x) AV_RB8(x)
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391 #define AV_WL8(p, d) AV_WB8(p, d)
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392
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393 #ifndef AV_RB16
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394 # define AV_RB16(p) AV_RB(16, p)
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395 #endif
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396 #ifndef AV_WB16
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397 # define AV_WB16(p, v) AV_WB(16, p, v)
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398 #endif
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399
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400 #ifndef AV_RL16
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401 # define AV_RL16(p) AV_RL(16, p)
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402 #endif
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403 #ifndef AV_WL16
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404 # define AV_WL16(p, v) AV_WL(16, p, v)
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405 #endif
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406
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407 #ifndef AV_RB32
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408 # define AV_RB32(p) AV_RB(32, p)
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409 #endif
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410 #ifndef AV_WB32
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411 # define AV_WB32(p, v) AV_WB(32, p, v)
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412 #endif
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413
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414 #ifndef AV_RL32
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415 # define AV_RL32(p) AV_RL(32, p)
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416 #endif
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417 #ifndef AV_WL32
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418 # define AV_WL32(p, v) AV_WL(32, p, v)
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419 #endif
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420
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421 #ifndef AV_RB64
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422 # define AV_RB64(p) AV_RB(64, p)
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423 #endif
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424 #ifndef AV_WB64
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425 # define AV_WB64(p, v) AV_WB(64, p, v)
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426 #endif
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427
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428 #ifndef AV_RL64
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429 # define AV_RL64(p) AV_RL(64, p)
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430 #endif
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431 #ifndef AV_WL64
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432 # define AV_WL64(p, v) AV_WL(64, p, v)
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433 #endif
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434
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435 #ifndef AV_RB24
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436 # define AV_RB24(x) \
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437 ((((const uint8_t*)(x))[0] << 16) | \
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438 (((const uint8_t*)(x))[1] << 8) | \
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439 ((const uint8_t*)(x))[2])
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440 #endif
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441 #ifndef AV_WB24
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442 # define AV_WB24(p, d) do { \
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443 ((uint8_t*)(p))[2] = (d); \
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444 ((uint8_t*)(p))[1] = (d)>>8; \
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445 ((uint8_t*)(p))[0] = (d)>>16; \
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446 } while(0)
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447 #endif
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448
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449 #ifndef AV_RL24
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450 # define AV_RL24(x) \
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451 ((((const uint8_t*)(x))[2] << 16) | \
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452 (((const uint8_t*)(x))[1] << 8) | \
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453 ((const uint8_t*)(x))[0])
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454 #endif
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455 #ifndef AV_WL24
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456 # define AV_WL24(p, d) do { \
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457 ((uint8_t*)(p))[0] = (d); \
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458 ((uint8_t*)(p))[1] = (d)>>8; \
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459 ((uint8_t*)(p))[2] = (d)>>16; \
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460 } while(0)
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461 #endif
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462
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463 #ifndef AV_RB48
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464 # define AV_RB48(x) \
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465 (((uint64_t)((const uint8_t*)(x))[0] << 40) | \
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466 ((uint64_t)((const uint8_t*)(x))[1] << 32) | \
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467 ((uint64_t)((const uint8_t*)(x))[2] << 24) | \
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468 ((uint64_t)((const uint8_t*)(x))[3] << 16) | \
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469 ((uint64_t)((const uint8_t*)(x))[4] << 8) | \
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470 (uint64_t)((const uint8_t*)(x))[5])
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471 #endif
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472 #ifndef AV_WB48
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473 # define AV_WB48(p, darg) do { \
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474 uint64_t d = (darg); \
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475 ((uint8_t*)(p))[5] = (d); \
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476 ((uint8_t*)(p))[4] = (d)>>8; \
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477 ((uint8_t*)(p))[3] = (d)>>16; \
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478 ((uint8_t*)(p))[2] = (d)>>24; \
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479 ((uint8_t*)(p))[1] = (d)>>32; \
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480 ((uint8_t*)(p))[0] = (d)>>40; \
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481 } while(0)
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482 #endif
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483
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484 #ifndef AV_RL48
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485 # define AV_RL48(x) \
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486 (((uint64_t)((const uint8_t*)(x))[5] << 40) | \
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487 ((uint64_t)((const uint8_t*)(x))[4] << 32) | \
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488 ((uint64_t)((const uint8_t*)(x))[3] << 24) | \
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489 ((uint64_t)((const uint8_t*)(x))[2] << 16) | \
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490 ((uint64_t)((const uint8_t*)(x))[1] << 8) | \
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491 (uint64_t)((const uint8_t*)(x))[0])
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492 #endif
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493 #ifndef AV_WL48
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494 # define AV_WL48(p, darg) do { \
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495 uint64_t d = (darg); \
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496 ((uint8_t*)(p))[0] = (d); \
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497 ((uint8_t*)(p))[1] = (d)>>8; \
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498 ((uint8_t*)(p))[2] = (d)>>16; \
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499 ((uint8_t*)(p))[3] = (d)>>24; \
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500 ((uint8_t*)(p))[4] = (d)>>32; \
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501 ((uint8_t*)(p))[5] = (d)>>40; \
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502 } while(0)
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503 #endif
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504
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505 /*
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506 * The AV_[RW]NA macros access naturally aligned data
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507 * in a type-safe way.
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508 */
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509
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510 #define AV_RNA(s, p) (((const av_alias##s*)(p))->u##s)
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511 #define AV_WNA(s, p, v) (((av_alias##s*)(p))->u##s = (v))
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512
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513 #ifndef AV_RN16A
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514 # define AV_RN16A(p) AV_RNA(16, p)
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515 #endif
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516
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517 #ifndef AV_RN32A
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518 # define AV_RN32A(p) AV_RNA(32, p)
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519 #endif
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520
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521 #ifndef AV_RN64A
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522 # define AV_RN64A(p) AV_RNA(64, p)
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523 #endif
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524
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525 #ifndef AV_WN16A
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526 # define AV_WN16A(p, v) AV_WNA(16, p, v)
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527 #endif
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528
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529 #ifndef AV_WN32A
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530 # define AV_WN32A(p, v) AV_WNA(32, p, v)
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531 #endif
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532
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533 #ifndef AV_WN64A
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534 # define AV_WN64A(p, v) AV_WNA(64, p, v)
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535 #endif
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536
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537 /*
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538 * The AV_COPYxxU macros are suitable for copying data to/from unaligned
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539 * memory locations.
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540 */
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541
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542 #define AV_COPYU(n, d, s) AV_WN##n(d, AV_RN##n(s));
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543
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544 #ifndef AV_COPY16U
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545 # define AV_COPY16U(d, s) AV_COPYU(16, d, s)
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546 #endif
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547
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548 #ifndef AV_COPY32U
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549 # define AV_COPY32U(d, s) AV_COPYU(32, d, s)
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550 #endif
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551
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552 #ifndef AV_COPY64U
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553 # define AV_COPY64U(d, s) AV_COPYU(64, d, s)
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554 #endif
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555
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556 #ifndef AV_COPY128U
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557 # define AV_COPY128U(d, s) \
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558 do { \
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559 AV_COPY64U(d, s); \
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560 AV_COPY64U((char *)(d) + 8, (const char *)(s) + 8); \
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561 } while(0)
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562 #endif
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563
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564 /* Parameters for AV_COPY*, AV_SWAP*, AV_ZERO* must be
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565 * naturally aligned. They may be implemented using MMX,
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566 * so emms_c() must be called before using any float code
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567 * afterwards.
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568 */
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569
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570 #define AV_COPY(n, d, s) \
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571 (((av_alias##n*)(d))->u##n = ((const av_alias##n*)(s))->u##n)
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572
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573 #ifndef AV_COPY16
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574 # define AV_COPY16(d, s) AV_COPY(16, d, s)
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575 #endif
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576
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577 #ifndef AV_COPY32
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578 # define AV_COPY32(d, s) AV_COPY(32, d, s)
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579 #endif
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580
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581 #ifndef AV_COPY64
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582 # define AV_COPY64(d, s) AV_COPY(64, d, s)
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583 #endif
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584
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585 #ifndef AV_COPY128
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586 # define AV_COPY128(d, s) \
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587 do { \
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588 AV_COPY64(d, s); \
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589 AV_COPY64((char*)(d)+8, (char*)(s)+8); \
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590 } while(0)
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591 #endif
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592
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593 #define AV_SWAP(n, a, b) FFSWAP(av_alias##n, *(av_alias##n*)(a), *(av_alias##n*)(b))
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594
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595 #ifndef AV_SWAP64
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596 # define AV_SWAP64(a, b) AV_SWAP(64, a, b)
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597 #endif
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598
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599 #define AV_ZERO(n, d) (((av_alias##n*)(d))->u##n = 0)
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600
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601 #ifndef AV_ZERO16
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602 # define AV_ZERO16(d) AV_ZERO(16, d)
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603 #endif
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604
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605 #ifndef AV_ZERO32
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606 # define AV_ZERO32(d) AV_ZERO(32, d)
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607 #endif
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608
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609 #ifndef AV_ZERO64
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610 # define AV_ZERO64(d) AV_ZERO(64, d)
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611 #endif
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612
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613 #ifndef AV_ZERO128
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614 # define AV_ZERO128(d) \
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615 do { \
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616 AV_ZERO64(d); \
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617 AV_ZERO64((char*)(d)+8); \
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618 } while(0)
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619 #endif
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620
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621 #endif /* AVUTIL_INTREADWRITE_H */
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