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FFmpeg/libavutil/intreadwrite.h

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  1. /*

  2.  * This file is part of Libav.

  3.  *

  4.  * Libav 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.  * Libav 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 Libav; if not, write to the Free Software

  16.  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

  17.  */

  18. 

  19. #ifndef AVUTIL_INTREADWRITE_H

  20. #define AVUTIL_INTREADWRITE_H

  21. 

  22. #include <stdint.h>

  23. #include "libavutil/avconfig.h"

  24. #include "attributes.h"

  25. #include "bswap.h"

  26. 

  27. typedef union {

  28.     uint64_t u64;

  29.     uint32_t u32[2];

  30.     uint16_t u16[4];

  31.     uint8_t  u8 [8];

  32.     double   f64;

  33.     float    f32[2];

  34. } av_alias av_alias64;

  35. 

  36. typedef union {

  37.     uint32_t u32;

  38.     uint16_t u16[2];

  39.     uint8_t  u8 [4];

  40.     float    f32;

  41. } av_alias av_alias32;

  42. 

  43. typedef union {

  44.     uint16_t u16;

  45.     uint8_t  u8 [2];

  46. } av_alias av_alias16;

  47. 

  48. /*

  49.  * Arch-specific headers can provide any combination of

  50.  * AV_[RW][BLN](16|24|32|64) and AV_(COPY|SWAP|ZERO)(64|128) macros.

  51.  * Preprocessor symbols must be defined, even if these are implemented

  52.  * as inline functions.

  53.  */

  54. 

  55. #ifdef HAVE_AV_CONFIG_H

  56. 

  57. #include "config.h"

  58. 

  59. #if   ARCH_ARM

  60. #   include "arm/intreadwrite.h"

  61. #elif ARCH_AVR32

  62. #   include "avr32/intreadwrite.h"

  63. #elif ARCH_MIPS

  64. #   include "mips/intreadwrite.h"

  65. #elif ARCH_PPC

  66. #   include "ppc/intreadwrite.h"

  67. #elif ARCH_TOMI

  68. #   include "tomi/intreadwrite.h"

  69. #elif ARCH_X86

  70. #   include "x86/intreadwrite.h"

  71. #endif

  72. 

  73. #endif /* HAVE_AV_CONFIG_H */

  74. 

  75. /*

  76.  * Map AV_RNXX <-> AV_R[BL]XX for all variants provided by per-arch headers.

  77.  */

  78. 

  79. #if AV_HAVE_BIGENDIAN

  80. 

  81. #   if    defined(AV_RN16) && !defined(AV_RB16)

  82. #       define AV_RB16(p) AV_RN16(p)

  83. #   elif !defined(AV_RN16) &&  defined(AV_RB16)

  84. #       define AV_RN16(p) AV_RB16(p)

  85. #   endif

  86. 

  87. #   if    defined(AV_WN16) && !defined(AV_WB16)

  88. #       define AV_WB16(p, v) AV_WN16(p, v)

  89. #   elif !defined(AV_WN16) &&  defined(AV_WB16)

  90. #       define AV_WN16(p, v) AV_WB16(p, v)

  91. #   endif

  92. 

  93. #   if    defined(AV_RN24) && !defined(AV_RB24)

  94. #       define AV_RB24(p) AV_RN24(p)

  95. #   elif !defined(AV_RN24) &&  defined(AV_RB24)

  96. #       define AV_RN24(p) AV_RB24(p)

  97. #   endif

  98. 

  99. #   if    defined(AV_WN24) && !defined(AV_WB24)

  100. #       define AV_WB24(p, v) AV_WN24(p, v)

  101. #   elif !defined(AV_WN24) &&  defined(AV_WB24)

  102. #       define AV_WN24(p, v) AV_WB24(p, v)

  103. #   endif

  104. 

  105. #   if    defined(AV_RN32) && !defined(AV_RB32)

  106. #       define AV_RB32(p) AV_RN32(p)

  107. #   elif !defined(AV_RN32) &&  defined(AV_RB32)

  108. #       define AV_RN32(p) AV_RB32(p)

  109. #   endif

  110. 

  111. #   if    defined(AV_WN32) && !defined(AV_WB32)

  112. #       define AV_WB32(p, v) AV_WN32(p, v)

  113. #   elif !defined(AV_WN32) &&  defined(AV_WB32)

  114. #       define AV_WN32(p, v) AV_WB32(p, v)

  115. #   endif

  116. 

  117. #   if    defined(AV_RN64) && !defined(AV_RB64)

  118. #       define AV_RB64(p) AV_RN64(p)

  119. #   elif !defined(AV_RN64) &&  defined(AV_RB64)

  120. #       define AV_RN64(p) AV_RB64(p)

  121. #   endif

  122. 

  123. #   if    defined(AV_WN64) && !defined(AV_WB64)

  124. #       define AV_WB64(p, v) AV_WN64(p, v)

  125. #   elif !defined(AV_WN64) &&  defined(AV_WB64)

  126. #       define AV_WN64(p, v) AV_WB64(p, v)

  127. #   endif

  128. 

  129. #else /* AV_HAVE_BIGENDIAN */

  130. 

  131. #   if    defined(AV_RN16) && !defined(AV_RL16)

  132. #       define AV_RL16(p) AV_RN16(p)

  133. #   elif !defined(AV_RN16) &&  defined(AV_RL16)

  134. #       define AV_RN16(p) AV_RL16(p)

  135. #   endif

  136. 

  137. #   if    defined(AV_WN16) && !defined(AV_WL16)

  138. #       define AV_WL16(p, v) AV_WN16(p, v)

  139. #   elif !defined(AV_WN16) &&  defined(AV_WL16)

  140. #       define AV_WN16(p, v) AV_WL16(p, v)

  141. #   endif

  142. 

  143. #   if    defined(AV_RN24) && !defined(AV_RL24)

  144. #       define AV_RL24(p) AV_RN24(p)

  145. #   elif !defined(AV_RN24) &&  defined(AV_RL24)

  146. #       define AV_RN24(p) AV_RL24(p)

  147. #   endif

  148. 

  149. #   if    defined(AV_WN24) && !defined(AV_WL24)

  150. #       define AV_WL24(p, v) AV_WN24(p, v)

  151. #   elif !defined(AV_WN24) &&  defined(AV_WL24)

  152. #       define AV_WN24(p, v) AV_WL24(p, v)

  153. #   endif

  154. 

  155. #   if    defined(AV_RN32) && !defined(AV_RL32)

  156. #       define AV_RL32(p) AV_RN32(p)

  157. #   elif !defined(AV_RN32) &&  defined(AV_RL32)

  158. #       define AV_RN32(p) AV_RL32(p)

  159. #   endif

  160. 

  161. #   if    defined(AV_WN32) && !defined(AV_WL32)

  162. #       define AV_WL32(p, v) AV_WN32(p, v)

  163. #   elif !defined(AV_WN32) &&  defined(AV_WL32)

  164. #       define AV_WN32(p, v) AV_WL32(p, v)

  165. #   endif

  166. 

  167. #   if    defined(AV_RN64) && !defined(AV_RL64)

  168. #       define AV_RL64(p) AV_RN64(p)

  169. #   elif !defined(AV_RN64) &&  defined(AV_RL64)

  170. #       define AV_RN64(p) AV_RL64(p)

  171. #   endif

  172. 

  173. #   if    defined(AV_WN64) && !defined(AV_WL64)

  174. #       define AV_WL64(p, v) AV_WN64(p, v)

  175. #   elif !defined(AV_WN64) &&  defined(AV_WL64)

  176. #       define AV_WN64(p, v) AV_WL64(p, v)

  177. #   endif

  178. 

  179. #endif /* !AV_HAVE_BIGENDIAN */

  180. 

  181. /*

  182.  * Define AV_[RW]N helper macros to simplify definitions not provided

  183.  * by per-arch headers.

  184.  */

  185. 

  186. #if defined(__GNUC__) && !defined(__TI_COMPILER_VERSION__)

  187. 

  188. union unaligned_64 { uint64_t l; } __attribute__((packed)) av_alias;

  189. union unaligned_32 { uint32_t l; } __attribute__((packed)) av_alias;

  190. union unaligned_16 { uint16_t l; } __attribute__((packed)) av_alias;

  191. 

  192. #   define AV_RN(s, p) (((const union unaligned_##s *) (p))->l)

  193. #   define AV_WN(s, p, v) ((((union unaligned_##s *) (p))->l) = (v))

  194. 

  195. #elif defined(__DECC)

  196. 

  197. #   define AV_RN(s, p) (*((const __unaligned uint##s##_t*)(p)))

  198. #   define AV_WN(s, p, v) (*((__unaligned uint##s##_t*)(p)) = (v))

  199. 

  200. #elif defined(_MSC_VER) && (defined(_M_ARM) || defined(_M_X64)) && AV_HAVE_FAST_UNALIGNED

  201. 

  202. #   define AV_RN(s, p) (*((const __unaligned uint##s##_t*)(p)))

  203. #   define AV_WN(s, p, v) (*((__unaligned uint##s##_t*)(p)) = (v))

  204. 

  205. #elif AV_HAVE_FAST_UNALIGNED

  206. 

  207. #   define AV_RN(s, p) (((const av_alias##s*)(p))->u##s)

  208. #   define AV_WN(s, p, v) (((av_alias##s*)(p))->u##s = (v))

  209. 

  210. #else

  211. 

  212. #ifndef AV_RB16

  213. #   define AV_RB16(x)                           \

  214.     ((((const uint8_t*)(x))[0] << 8) |          \

  215.       ((const uint8_t*)(x))[1])

  216. #endif

  217. #ifndef AV_WB16

  218. #   define AV_WB16(p, val) do {                 \

  219.         uint16_t d = val;                       \

  220.         ((uint8_t*)(p))[1] = (d);               \

  221.         ((uint8_t*)(p))[0] = (d)>>8;            \

  222.     } while(0)

  223. #endif

  224. 

  225. #ifndef AV_RL16

  226. #   define AV_RL16(x)                           \

  227.     ((((const uint8_t*)(x))[1] << 8) |          \

  228.       ((const uint8_t*)(x))[0])

  229. #endif

  230. #ifndef AV_WL16

  231. #   define AV_WL16(p, val) do {                 \

  232.         uint16_t d = val;                       \

  233.         ((uint8_t*)(p))[0] = (d);               \

  234.         ((uint8_t*)(p))[1] = (d)>>8;            \

  235.     } while(0)

  236. #endif

  237. 

  238. #ifndef AV_RB32

  239. #   define AV_RB32(x)                                \

  240.     (((uint32_t)((const uint8_t*)(x))[0] << 24) |    \

  241.                (((const uint8_t*)(x))[1] << 16) |    \

  242.                (((const uint8_t*)(x))[2] <<  8) |    \

  243.                 ((const uint8_t*)(x))[3])

  244. #endif

  245. #ifndef AV_WB32

  246. #   define AV_WB32(p, val) do {                 \

  247.         uint32_t d = val;                       \

  248.         ((uint8_t*)(p))[3] = (d);               \

  249.         ((uint8_t*)(p))[2] = (d)>>8;            \

  250.         ((uint8_t*)(p))[1] = (d)>>16;           \

  251.         ((uint8_t*)(p))[0] = (d)>>24;           \

  252.     } while(0)

  253. #endif

  254. 

  255. #ifndef AV_RL32

  256. #   define AV_RL32(x)                                \

  257.     (((uint32_t)((const uint8_t*)(x))[3] << 24) |    \

  258.                (((const uint8_t*)(x))[2] << 16) |    \

  259.                (((const uint8_t*)(x))[1] <<  8) |    \

  260.                 ((const uint8_t*)(x))[0])

  261. #endif

  262. #ifndef AV_WL32

  263. #   define AV_WL32(p, val) do {                 \

  264.         uint32_t d = val;                       \

  265.         ((uint8_t*)(p))[0] = (d);               \

  266.         ((uint8_t*)(p))[1] = (d)>>8;            \

  267.         ((uint8_t*)(p))[2] = (d)>>16;           \

  268.         ((uint8_t*)(p))[3] = (d)>>24;           \

  269.     } while(0)

  270. #endif

  271. 

  272. #ifndef AV_RB64

  273. #   define AV_RB64(x)                                   \

  274.     (((uint64_t)((const uint8_t*)(x))[0] << 56) |       \

  275.      ((uint64_t)((const uint8_t*)(x))[1] << 48) |       \

  276.      ((uint64_t)((const uint8_t*)(x))[2] << 40) |       \

  277.      ((uint64_t)((const uint8_t*)(x))[3] << 32) |       \

  278.      ((uint64_t)((const uint8_t*)(x))[4] << 24) |       \

  279.      ((uint64_t)((const uint8_t*)(x))[5] << 16) |       \

  280.      ((uint64_t)((const uint8_t*)(x))[6] <<  8) |       \

  281.       (uint64_t)((const uint8_t*)(x))[7])

  282. #endif

  283. #ifndef AV_WB64

  284. #   define AV_WB64(p, val) do {                 \

  285.         uint64_t d = val;                       \

  286.         ((uint8_t*)(p))[7] = (d);               \

  287.         ((uint8_t*)(p))[6] = (d)>>8;            \

  288.         ((uint8_t*)(p))[5] = (d)>>16;           \

  289.         ((uint8_t*)(p))[4] = (d)>>24;           \

  290.         ((uint8_t*)(p))[3] = (d)>>32;           \

  291.         ((uint8_t*)(p))[2] = (d)>>40;           \

  292.         ((uint8_t*)(p))[1] = (d)>>48;           \

  293.         ((uint8_t*)(p))[0] = (d)>>56;           \

  294.     } while(0)

  295. #endif

  296. 

  297. #ifndef AV_RL64

  298. #   define AV_RL64(x)                                   \

  299.     (((uint64_t)((const uint8_t*)(x))[7] << 56) |       \

  300.      ((uint64_t)((const uint8_t*)(x))[6] << 48) |       \

  301.      ((uint64_t)((const uint8_t*)(x))[5] << 40) |       \

  302.      ((uint64_t)((const uint8_t*)(x))[4] << 32) |       \

  303.      ((uint64_t)((const uint8_t*)(x))[3] << 24) |       \

  304.      ((uint64_t)((const uint8_t*)(x))[2] << 16) |       \

  305.      ((uint64_t)((const uint8_t*)(x))[1] <<  8) |       \

  306.       (uint64_t)((const uint8_t*)(x))[0])

  307. #endif

  308. #ifndef AV_WL64

  309. #   define AV_WL64(p, val) do {                 \

  310.         uint64_t d = val;                       \

  311.         ((uint8_t*)(p))[0] = (d);               \

  312.         ((uint8_t*)(p))[1] = (d)>>8;            \

  313.         ((uint8_t*)(p))[2] = (d)>>16;           \

  314.         ((uint8_t*)(p))[3] = (d)>>24;           \

  315.         ((uint8_t*)(p))[4] = (d)>>32;           \

  316.         ((uint8_t*)(p))[5] = (d)>>40;           \

  317.         ((uint8_t*)(p))[6] = (d)>>48;           \

  318.         ((uint8_t*)(p))[7] = (d)>>56;           \

  319.     } while(0)

  320. #endif

  321. 

  322. #if AV_HAVE_BIGENDIAN

  323. #   define AV_RN(s, p)    AV_RB##s(p)

  324. #   define AV_WN(s, p, v) AV_WB##s(p, v)

  325. #else

  326. #   define AV_RN(s, p)    AV_RL##s(p)

  327. #   define AV_WN(s, p, v) AV_WL##s(p, v)

  328. #endif

  329. 

  330. #endif /* HAVE_FAST_UNALIGNED */

  331. 

  332. #ifndef AV_RN16

  333. #   define AV_RN16(p) AV_RN(16, p)

  334. #endif

  335. 

  336. #ifndef AV_RN32

  337. #   define AV_RN32(p) AV_RN(32, p)

  338. #endif

  339. 

  340. #ifndef AV_RN64

  341. #   define AV_RN64(p) AV_RN(64, p)

  342. #endif

  343. 

  344. #ifndef AV_WN16

  345. #   define AV_WN16(p, v) AV_WN(16, p, v)

  346. #endif

  347. 

  348. #ifndef AV_WN32

  349. #   define AV_WN32(p, v) AV_WN(32, p, v)

  350. #endif

  351. 

  352. #ifndef AV_WN64

  353. #   define AV_WN64(p, v) AV_WN(64, p, v)

  354. #endif

  355. 

  356. #if AV_HAVE_BIGENDIAN

  357. #   define AV_RB(s, p)    AV_RN##s(p)

  358. #   define AV_WB(s, p, v) AV_WN##s(p, v)

  359. #   define AV_RL(s, p)    av_bswap##s(AV_RN##s(p))

  360. #   define AV_WL(s, p, v) AV_WN##s(p, av_bswap##s(v))

  361. #else

  362. #   define AV_RB(s, p)    av_bswap##s(AV_RN##s(p))

  363. #   define AV_WB(s, p, v) AV_WN##s(p, av_bswap##s(v))

  364. #   define AV_RL(s, p)    AV_RN##s(p)

  365. #   define AV_WL(s, p, v) AV_WN##s(p, v)

  366. #endif

  367. 

  368. #define AV_RB8(x)     (((const uint8_t*)(x))[0])

  369. #define AV_WB8(p, d)  do { ((uint8_t*)(p))[0] = (d); } while(0)

  370. 

  371. #define AV_RL8(x)     AV_RB8(x)

  372. #define AV_WL8(p, d)  AV_WB8(p, d)

  373. 

  374. #ifndef AV_RB16

  375. #   define AV_RB16(p)    AV_RB(16, p)

  376. #endif

  377. #ifndef AV_WB16

  378. #   define AV_WB16(p, v) AV_WB(16, p, v)

  379. #endif

  380. 

  381. #ifndef AV_RL16

  382. #   define AV_RL16(p)    AV_RL(16, p)

  383. #endif

  384. #ifndef AV_WL16

  385. #   define AV_WL16(p, v) AV_WL(16, p, v)

  386. #endif

  387. 

  388. #ifndef AV_RB32

  389. #   define AV_RB32(p)    AV_RB(32, p)

  390. #endif

  391. #ifndef AV_WB32

  392. #   define AV_WB32(p, v) AV_WB(32, p, v)

  393. #endif

  394. 

  395. #ifndef AV_RL32

  396. #   define AV_RL32(p)    AV_RL(32, p)

  397. #endif

  398. #ifndef AV_WL32

  399. #   define AV_WL32(p, v) AV_WL(32, p, v)

  400. #endif

  401. 

  402. #ifndef AV_RB64

  403. #   define AV_RB64(p)    AV_RB(64, p)

  404. #endif

  405. #ifndef AV_WB64

  406. #   define AV_WB64(p, v) AV_WB(64, p, v)

  407. #endif

  408. 

  409. #ifndef AV_RL64

  410. #   define AV_RL64(p)    AV_RL(64, p)

  411. #endif

  412. #ifndef AV_WL64

  413. #   define AV_WL64(p, v) AV_WL(64, p, v)

  414. #endif

  415. 

  416. #ifndef AV_RB24

  417. #   define AV_RB24(x)                           \

  418.     ((((const uint8_t*)(x))[0] << 16) |         \

  419.      (((const uint8_t*)(x))[1] <<  8) |         \

  420.       ((const uint8_t*)(x))[2])

  421. #endif

  422. #ifndef AV_WB24

  423. #   define AV_WB24(p, d) do {                   \

  424.         ((uint8_t*)(p))[2] = (d);               \

  425.         ((uint8_t*)(p))[1] = (d)>>8;            \

  426.         ((uint8_t*)(p))[0] = (d)>>16;           \

  427.     } while(0)

  428. #endif

  429. 

  430. #ifndef AV_RL24

  431. #   define AV_RL24(x)                           \

  432.     ((((const uint8_t*)(x))[2] << 16) |         \

  433.      (((const uint8_t*)(x))[1] <<  8) |         \

  434.       ((const uint8_t*)(x))[0])

  435. #endif

  436. #ifndef AV_WL24

  437. #   define AV_WL24(p, d) do {                   \

  438.         ((uint8_t*)(p))[0] = (d);               \

  439.         ((uint8_t*)(p))[1] = (d)>>8;            \

  440.         ((uint8_t*)(p))[2] = (d)>>16;           \

  441.     } while(0)

  442. #endif

  443. 

  444. /*

  445.  * The AV_[RW]NA macros access naturally aligned data

  446.  * in a type-safe way.

  447.  */

  448. 

  449. #define AV_RNA(s, p)    (((const av_alias##s*)(p))->u##s)

  450. #define AV_WNA(s, p, v) (((av_alias##s*)(p))->u##s = (v))

  451. 

  452. #ifndef AV_RN16A

  453. #   define AV_RN16A(p) AV_RNA(16, p)

  454. #endif

  455. 

  456. #ifndef AV_RN32A

  457. #   define AV_RN32A(p) AV_RNA(32, p)

  458. #endif

  459. 

  460. #ifndef AV_RN64A

  461. #   define AV_RN64A(p) AV_RNA(64, p)

  462. #endif

  463. 

  464. #ifndef AV_WN16A

  465. #   define AV_WN16A(p, v) AV_WNA(16, p, v)

  466. #endif

  467. 

  468. #ifndef AV_WN32A

  469. #   define AV_WN32A(p, v) AV_WNA(32, p, v)

  470. #endif

  471. 

  472. #ifndef AV_WN64A

  473. #   define AV_WN64A(p, v) AV_WNA(64, p, v)

  474. #endif

  475. 

  476. /*

  477.  * The AV_COPYxxU macros are suitable for copying data to/from unaligned

  478.  * memory locations.

  479.  */

  480. 

  481. #define AV_COPYU(n, d, s) AV_WN##n(d, AV_RN##n(s));

  482. 

  483. #ifndef AV_COPY16U

  484. #   define AV_COPY16U(d, s) AV_COPYU(16, d, s)

  485. #endif

  486. 

  487. #ifndef AV_COPY32U

  488. #   define AV_COPY32U(d, s) AV_COPYU(32, d, s)

  489. #endif

  490. 

  491. #ifndef AV_COPY64U

  492. #   define AV_COPY64U(d, s) AV_COPYU(64, d, s)

  493. #endif

  494. 

  495. #ifndef AV_COPY128U

  496. #   define AV_COPY128U(d, s)                                    \

  497.     do {                                                        \

  498.         AV_COPY64U(d, s);                                       \

  499.         AV_COPY64U((char *)(d) + 8, (const char *)(s) + 8);     \

  500.     } while(0)

  501. #endif

  502. 

  503. /* Parameters for AV_COPY*, AV_SWAP*, AV_ZERO* must be

  504.  * naturally aligned. They may be implemented using MMX,

  505.  * so emms_c() must be called before using any float code

  506.  * afterwards.

  507.  */

  508. 

  509. #define AV_COPY(n, d, s) \

  510.     (((av_alias##n*)(d))->u##n = ((const av_alias##n*)(s))->u##n)

  511. 

  512. #ifndef AV_COPY16

  513. #   define AV_COPY16(d, s) AV_COPY(16, d, s)

  514. #endif

  515. 

  516. #ifndef AV_COPY32

  517. #   define AV_COPY32(d, s) AV_COPY(32, d, s)

  518. #endif

  519. 

  520. #ifndef AV_COPY64

  521. #   define AV_COPY64(d, s) AV_COPY(64, d, s)

  522. #endif

  523. 

  524. #ifndef AV_COPY128

  525. #   define AV_COPY128(d, s)                    \

  526.     do {                                       \

  527.         AV_COPY64(d, s);                       \

  528.         AV_COPY64((char*)(d)+8, (char*)(s)+8); \

  529.     } while(0)

  530. #endif

  531. 

  532. #define AV_SWAP(n, a, b) FFSWAP(av_alias##n, *(av_alias##n*)(a), *(av_alias##n*)(b))

  533. 

  534. #ifndef AV_SWAP64

  535. #   define AV_SWAP64(a, b) AV_SWAP(64, a, b)

  536. #endif

  537. 

  538. #define AV_ZERO(n, d) (((av_alias##n*)(d))->u##n = 0)

  539. 

  540. #ifndef AV_ZERO16

  541. #   define AV_ZERO16(d) AV_ZERO(16, d)

  542. #endif

  543. 

  544. #ifndef AV_ZERO32

  545. #   define AV_ZERO32(d) AV_ZERO(32, d)

  546. #endif

  547. 

  548. #ifndef AV_ZERO64

  549. #   define AV_ZERO64(d) AV_ZERO(64, d)

  550. #endif

  551. 

  552. #ifndef AV_ZERO128

  553. #   define AV_ZERO128(d)         \

  554.     do {                         \

  555.         AV_ZERO64(d);            \

  556.         AV_ZERO64((char*)(d)+8); \

  557.     } while(0)

  558. #endif

  559. 

  560. #endif /* AVUTIL_INTREADWRITE_H */