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 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
27typedef 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
36typedef union {
37    uint32_t u32;
38    uint16_t u16[2];
39    uint8_t  u8 [4];
40    float    f32;
41} av_alias av_alias32;
42
43typedef 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|48|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_RN48) && !defined(AV_RB48)
118#       define AV_RB48(p) AV_RN48(p)
119#   elif !defined(AV_RN48) &&  defined(AV_RB48)
120#       define AV_RN48(p) AV_RB48(p)
121#   endif
122
123#   if    defined(AV_WN48) && !defined(AV_WB48)
124#       define AV_WB48(p, v) AV_WN48(p, v)
125#   elif !defined(AV_WN48) &&  defined(AV_WB48)
126#       define AV_WN48(p, v) AV_WB48(p, v)
127#   endif
128
129#   if    defined(AV_RN64) && !defined(AV_RB64)
130#       define AV_RB64(p) AV_RN64(p)
131#   elif !defined(AV_RN64) &&  defined(AV_RB64)
132#       define AV_RN64(p) AV_RB64(p)
133#   endif
134
135#   if    defined(AV_WN64) && !defined(AV_WB64)
136#       define AV_WB64(p, v) AV_WN64(p, v)
137#   elif !defined(AV_WN64) &&  defined(AV_WB64)
138#       define AV_WN64(p, v) AV_WB64(p, v)
139#   endif
140
141#else /* AV_HAVE_BIGENDIAN */
142
143#   if    defined(AV_RN16) && !defined(AV_RL16)
144#       define AV_RL16(p) AV_RN16(p)
145#   elif !defined(AV_RN16) &&  defined(AV_RL16)
146#       define AV_RN16(p) AV_RL16(p)
147#   endif
148
149#   if    defined(AV_WN16) && !defined(AV_WL16)
150#       define AV_WL16(p, v) AV_WN16(p, v)
151#   elif !defined(AV_WN16) &&  defined(AV_WL16)
152#       define AV_WN16(p, v) AV_WL16(p, v)
153#   endif
154
155#   if    defined(AV_RN24) && !defined(AV_RL24)
156#       define AV_RL24(p) AV_RN24(p)
157#   elif !defined(AV_RN24) &&  defined(AV_RL24)
158#       define AV_RN24(p) AV_RL24(p)
159#   endif
160
161#   if    defined(AV_WN24) && !defined(AV_WL24)
162#       define AV_WL24(p, v) AV_WN24(p, v)
163#   elif !defined(AV_WN24) &&  defined(AV_WL24)
164#       define AV_WN24(p, v) AV_WL24(p, v)
165#   endif
166
167#   if    defined(AV_RN32) && !defined(AV_RL32)
168#       define AV_RL32(p) AV_RN32(p)
169#   elif !defined(AV_RN32) &&  defined(AV_RL32)
170#       define AV_RN32(p) AV_RL32(p)
171#   endif
172
173#   if    defined(AV_WN32) && !defined(AV_WL32)
174#       define AV_WL32(p, v) AV_WN32(p, v)
175#   elif !defined(AV_WN32) &&  defined(AV_WL32)
176#       define AV_WN32(p, v) AV_WL32(p, v)
177#   endif
178
179#   if    defined(AV_RN48) && !defined(AV_RL48)
180#       define AV_RL48(p) AV_RN48(p)
181#   elif !defined(AV_RN48) &&  defined(AV_RL48)
182#       define AV_RN48(p) AV_RL48(p)
183#   endif
184
185#   if    defined(AV_WN48) && !defined(AV_WL48)
186#       define AV_WL48(p, v) AV_WN48(p, v)
187#   elif !defined(AV_WN48) &&  defined(AV_WL48)
188#       define AV_WN48(p, v) AV_WL48(p, v)
189#   endif
190
191#   if    defined(AV_RN64) && !defined(AV_RL64)
192#       define AV_RL64(p) AV_RN64(p)
193#   elif !defined(AV_RN64) &&  defined(AV_RL64)
194#       define AV_RN64(p) AV_RL64(p)
195#   endif
196
197#   if    defined(AV_WN64) && !defined(AV_WL64)
198#       define AV_WL64(p, v) AV_WN64(p, v)
199#   elif !defined(AV_WN64) &&  defined(AV_WL64)
200#       define AV_WN64(p, v) AV_WL64(p, v)
201#   endif
202
203#endif /* !AV_HAVE_BIGENDIAN */
204
205/*
206 * Define AV_[RW]N helper macros to simplify definitions not provided
207 * by per-arch headers.
208 */
209
210#if defined(__GNUC__) && !defined(__TI_COMPILER_VERSION__)
211
212union unaligned_64 { uint64_t l; } __attribute__((packed)) av_alias;
213union unaligned_32 { uint32_t l; } __attribute__((packed)) av_alias;
214union unaligned_16 { uint16_t l; } __attribute__((packed)) av_alias;
215
216#   define AV_RN(s, p) (((const union unaligned_##s *) (p))->l)
217#   define AV_WN(s, p, v) ((((union unaligned_##s *) (p))->l) = (v))
218
219#elif defined(__DECC)
220
221#   define AV_RN(s, p) (*((const __unaligned uint##s##_t*)(p)))
222#   define AV_WN(s, p, v) (*((__unaligned uint##s##_t*)(p)) = (v))
223
224#elif AV_HAVE_FAST_UNALIGNED
225
226#   define AV_RN(s, p) (((const av_alias##s*)(p))->u##s)
227#   define AV_WN(s, p, v) (((av_alias##s*)(p))->u##s = (v))
228
229#else
230
231#ifndef AV_RB16
232#   define AV_RB16(x)                           \
233    ((((const uint8_t*)(x))[0] << 8) |          \
234      ((const uint8_t*)(x))[1])
235#endif
236#ifndef AV_WB16
237#   define AV_WB16(p, darg) do {                \
238        unsigned d = (darg);                    \
239        ((uint8_t*)(p))[1] = (d);               \
240        ((uint8_t*)(p))[0] = (d)>>8;            \
241    } while(0)
242#endif
243
244#ifndef AV_RL16
245#   define AV_RL16(x)                           \
246    ((((const uint8_t*)(x))[1] << 8) |          \
247      ((const uint8_t*)(x))[0])
248#endif
249#ifndef AV_WL16
250#   define AV_WL16(p, darg) do {                \
251        unsigned d = (darg);                    \
252        ((uint8_t*)(p))[0] = (d);               \
253        ((uint8_t*)(p))[1] = (d)>>8;            \
254    } while(0)
255#endif
256
257#ifndef AV_RB32
258#   define AV_RB32(x)                                \
259    (((uint32_t)((const uint8_t*)(x))[0] << 24) |    \
260               (((const uint8_t*)(x))[1] << 16) |    \
261               (((const uint8_t*)(x))[2] <<  8) |    \
262                ((const uint8_t*)(x))[3])
263#endif
264#ifndef AV_WB32
265#   define AV_WB32(p, darg) do {                \
266        unsigned d = (darg);                    \
267        ((uint8_t*)(p))[3] = (d);               \
268        ((uint8_t*)(p))[2] = (d)>>8;            \
269        ((uint8_t*)(p))[1] = (d)>>16;           \
270        ((uint8_t*)(p))[0] = (d)>>24;           \
271    } while(0)
272#endif
273
274#ifndef AV_RL32
275#   define AV_RL32(x)                                \
276    (((uint32_t)((const uint8_t*)(x))[3] << 24) |    \
277               (((const uint8_t*)(x))[2] << 16) |    \
278               (((const uint8_t*)(x))[1] <<  8) |    \
279                ((const uint8_t*)(x))[0])
280#endif
281#ifndef AV_WL32
282#   define AV_WL32(p, darg) do {                \
283        unsigned d = (darg);                    \
284        ((uint8_t*)(p))[0] = (d);               \
285        ((uint8_t*)(p))[1] = (d)>>8;            \
286        ((uint8_t*)(p))[2] = (d)>>16;           \
287        ((uint8_t*)(p))[3] = (d)>>24;           \
288    } while(0)
289#endif
290
291#ifndef AV_RB64
292#   define AV_RB64(x)                                   \
293    (((uint64_t)((const uint8_t*)(x))[0] << 56) |       \
294     ((uint64_t)((const uint8_t*)(x))[1] << 48) |       \
295     ((uint64_t)((const uint8_t*)(x))[2] << 40) |       \
296     ((uint64_t)((const uint8_t*)(x))[3] << 32) |       \
297     ((uint64_t)((const uint8_t*)(x))[4] << 24) |       \
298     ((uint64_t)((const uint8_t*)(x))[5] << 16) |       \
299     ((uint64_t)((const uint8_t*)(x))[6] <<  8) |       \
300      (uint64_t)((const uint8_t*)(x))[7])
301#endif
302#ifndef AV_WB64
303#   define AV_WB64(p, darg) do {                \
304        uint64_t d = (darg);                    \
305        ((uint8_t*)(p))[7] = (d);               \
306        ((uint8_t*)(p))[6] = (d)>>8;            \
307        ((uint8_t*)(p))[5] = (d)>>16;           \
308        ((uint8_t*)(p))[4] = (d)>>24;           \
309        ((uint8_t*)(p))[3] = (d)>>32;           \
310        ((uint8_t*)(p))[2] = (d)>>40;           \
311        ((uint8_t*)(p))[1] = (d)>>48;           \
312        ((uint8_t*)(p))[0] = (d)>>56;           \
313    } while(0)
314#endif
315
316#ifndef AV_RL64
317#   define AV_RL64(x)                                   \
318    (((uint64_t)((const uint8_t*)(x))[7] << 56) |       \
319     ((uint64_t)((const uint8_t*)(x))[6] << 48) |       \
320     ((uint64_t)((const uint8_t*)(x))[5] << 40) |       \
321     ((uint64_t)((const uint8_t*)(x))[4] << 32) |       \
322     ((uint64_t)((const uint8_t*)(x))[3] << 24) |       \
323     ((uint64_t)((const uint8_t*)(x))[2] << 16) |       \
324     ((uint64_t)((const uint8_t*)(x))[1] <<  8) |       \
325      (uint64_t)((const uint8_t*)(x))[0])
326#endif
327#ifndef AV_WL64
328#   define AV_WL64(p, darg) do {                \
329        uint64_t d = (darg);                    \
330        ((uint8_t*)(p))[0] = (d);               \
331        ((uint8_t*)(p))[1] = (d)>>8;            \
332        ((uint8_t*)(p))[2] = (d)>>16;           \
333        ((uint8_t*)(p))[3] = (d)>>24;           \
334        ((uint8_t*)(p))[4] = (d)>>32;           \
335        ((uint8_t*)(p))[5] = (d)>>40;           \
336        ((uint8_t*)(p))[6] = (d)>>48;           \
337        ((uint8_t*)(p))[7] = (d)>>56;           \
338    } while(0)
339#endif
340
341#if AV_HAVE_BIGENDIAN
342#   define AV_RN(s, p)    AV_RB##s(p)
343#   define AV_WN(s, p, v) AV_WB##s(p, v)
344#else
345#   define AV_RN(s, p)    AV_RL##s(p)
346#   define AV_WN(s, p, v) AV_WL##s(p, v)
347#endif
348
349#endif /* HAVE_FAST_UNALIGNED */
350
351#ifndef AV_RN16
352#   define AV_RN16(p) AV_RN(16, p)
353#endif
354
355#ifndef AV_RN32
356#   define AV_RN32(p) AV_RN(32, p)
357#endif
358
359#ifndef AV_RN64
360#   define AV_RN64(p) AV_RN(64, p)
361#endif
362
363#ifndef AV_WN16
364#   define AV_WN16(p, v) AV_WN(16, p, v)
365#endif
366
367#ifndef AV_WN32
368#   define AV_WN32(p, v) AV_WN(32, p, v)
369#endif
370
371#ifndef AV_WN64
372#   define AV_WN64(p, v) AV_WN(64, p, v)
373#endif
374
375#if AV_HAVE_BIGENDIAN
376#   define AV_RB(s, p)    AV_RN##s(p)
377#   define AV_WB(s, p, v) AV_WN##s(p, v)
378#   define AV_RL(s, p)    av_bswap##s(AV_RN##s(p))
379#   define AV_WL(s, p, v) AV_WN##s(p, av_bswap##s(v))
380#else
381#   define AV_RB(s, p)    av_bswap##s(AV_RN##s(p))
382#   define AV_WB(s, p, v) AV_WN##s(p, av_bswap##s(v))
383#   define AV_RL(s, p)    AV_RN##s(p)
384#   define AV_WL(s, p, v) AV_WN##s(p, v)
385#endif
386
387#define AV_RB8(x)     (((const uint8_t*)(x))[0])
388#define AV_WB8(p, d)  do { ((uint8_t*)(p))[0] = (d); } while(0)
389
390#define AV_RL8(x)     AV_RB8(x)
391#define AV_WL8(p, d)  AV_WB8(p, d)
392
393#ifndef AV_RB16
394#   define AV_RB16(p)    AV_RB(16, p)
395#endif
396#ifndef AV_WB16
397#   define AV_WB16(p, v) AV_WB(16, p, v)
398#endif
399
400#ifndef AV_RL16
401#   define AV_RL16(p)    AV_RL(16, p)
402#endif
403#ifndef AV_WL16
404#   define AV_WL16(p, v) AV_WL(16, p, v)
405#endif
406
407#ifndef AV_RB32
408#   define AV_RB32(p)    AV_RB(32, p)
409#endif
410#ifndef AV_WB32
411#   define AV_WB32(p, v) AV_WB(32, p, v)
412#endif
413
414#ifndef AV_RL32
415#   define AV_RL32(p)    AV_RL(32, p)
416#endif
417#ifndef AV_WL32
418#   define AV_WL32(p, v) AV_WL(32, p, v)
419#endif
420
421#ifndef AV_RB64
422#   define AV_RB64(p)    AV_RB(64, p)
423#endif
424#ifndef AV_WB64
425#   define AV_WB64(p, v) AV_WB(64, p, v)
426#endif
427
428#ifndef AV_RL64
429#   define AV_RL64(p)    AV_RL(64, p)
430#endif
431#ifndef AV_WL64
432#   define AV_WL64(p, v) AV_WL(64, p, v)
433#endif
434
435#ifndef AV_RB24
436#   define AV_RB24(x)                           \
437    ((((const uint8_t*)(x))[0] << 16) |         \
438     (((const uint8_t*)(x))[1] <<  8) |         \
439      ((const uint8_t*)(x))[2])
440#endif
441#ifndef AV_WB24
442#   define AV_WB24(p, d) do {                   \
443        ((uint8_t*)(p))[2] = (d);               \
444        ((uint8_t*)(p))[1] = (d)>>8;            \
445        ((uint8_t*)(p))[0] = (d)>>16;           \
446    } while(0)
447#endif
448
449#ifndef AV_RL24
450#   define AV_RL24(x)                           \
451    ((((const uint8_t*)(x))[2] << 16) |         \
452     (((const uint8_t*)(x))[1] <<  8) |         \
453      ((const uint8_t*)(x))[0])
454#endif
455#ifndef AV_WL24
456#   define AV_WL24(p, d) do {                   \
457        ((uint8_t*)(p))[0] = (d);               \
458        ((uint8_t*)(p))[1] = (d)>>8;            \
459        ((uint8_t*)(p))[2] = (d)>>16;           \
460    } while(0)
461#endif
462
463#ifndef AV_RB48
464#   define AV_RB48(x)                                     \
465    (((uint64_t)((const uint8_t*)(x))[0] << 40) |         \
466     ((uint64_t)((const uint8_t*)(x))[1] << 32) |         \
467     ((uint64_t)((const uint8_t*)(x))[2] << 24) |         \
468     ((uint64_t)((const uint8_t*)(x))[3] << 16) |         \
469     ((uint64_t)((const uint8_t*)(x))[4] <<  8) |         \
470      (uint64_t)((const uint8_t*)(x))[5])
471#endif
472#ifndef AV_WB48
473#   define AV_WB48(p, darg) do {                \
474        uint64_t d = (darg);                    \
475        ((uint8_t*)(p))[5] = (d);               \
476        ((uint8_t*)(p))[4] = (d)>>8;            \
477        ((uint8_t*)(p))[3] = (d)>>16;           \
478        ((uint8_t*)(p))[2] = (d)>>24;           \
479        ((uint8_t*)(p))[1] = (d)>>32;           \
480        ((uint8_t*)(p))[0] = (d)>>40;           \
481    } while(0)
482#endif
483
484#ifndef AV_RL48
485#   define AV_RL48(x)                                     \
486    (((uint64_t)((const uint8_t*)(x))[5] << 40) |         \
487     ((uint64_t)((const uint8_t*)(x))[4] << 32) |         \
488     ((uint64_t)((const uint8_t*)(x))[3] << 24) |         \
489     ((uint64_t)((const uint8_t*)(x))[2] << 16) |         \
490     ((uint64_t)((const uint8_t*)(x))[1] <<  8) |         \
491      (uint64_t)((const uint8_t*)(x))[0])
492#endif
493#ifndef AV_WL48
494#   define AV_WL48(p, darg) do {                \
495        uint64_t d = (darg);                    \
496        ((uint8_t*)(p))[0] = (d);               \
497        ((uint8_t*)(p))[1] = (d)>>8;            \
498        ((uint8_t*)(p))[2] = (d)>>16;           \
499        ((uint8_t*)(p))[3] = (d)>>24;           \
500        ((uint8_t*)(p))[4] = (d)>>32;           \
501        ((uint8_t*)(p))[5] = (d)>>40;           \
502    } while(0)
503#endif
504
505/*
506 * The AV_[RW]NA macros access naturally aligned data
507 * in a type-safe way.
508 */
509
510#define AV_RNA(s, p)    (((const av_alias##s*)(p))->u##s)
511#define AV_WNA(s, p, v) (((av_alias##s*)(p))->u##s = (v))
512
513#ifndef AV_RN16A
514#   define AV_RN16A(p) AV_RNA(16, p)
515#endif
516
517#ifndef AV_RN32A
518#   define AV_RN32A(p) AV_RNA(32, p)
519#endif
520
521#ifndef AV_RN64A
522#   define AV_RN64A(p) AV_RNA(64, p)
523#endif
524
525#ifndef AV_WN16A
526#   define AV_WN16A(p, v) AV_WNA(16, p, v)
527#endif
528
529#ifndef AV_WN32A
530#   define AV_WN32A(p, v) AV_WNA(32, p, v)
531#endif
532
533#ifndef AV_WN64A
534#   define AV_WN64A(p, v) AV_WNA(64, p, v)
535#endif
536
537/*
538 * The AV_COPYxxU macros are suitable for copying data to/from unaligned
539 * memory locations.
540 */
541
542#define AV_COPYU(n, d, s) AV_WN##n(d, AV_RN##n(s));
543
544#ifndef AV_COPY16U
545#   define AV_COPY16U(d, s) AV_COPYU(16, d, s)
546#endif
547
548#ifndef AV_COPY32U
549#   define AV_COPY32U(d, s) AV_COPYU(32, d, s)
550#endif
551
552#ifndef AV_COPY64U
553#   define AV_COPY64U(d, s) AV_COPYU(64, d, s)
554#endif
555
556#ifndef AV_COPY128U
557#   define AV_COPY128U(d, s)                                    \
558    do {                                                        \
559        AV_COPY64U(d, s);                                       \
560        AV_COPY64U((char *)(d) + 8, (const char *)(s) + 8);     \
561    } while(0)
562#endif
563
564/* Parameters for AV_COPY*, AV_SWAP*, AV_ZERO* must be
565 * naturally aligned. They may be implemented using MMX,
566 * so emms_c() must be called before using any float code
567 * afterwards.
568 */
569
570#define AV_COPY(n, d, s) \
571    (((av_alias##n*)(d))->u##n = ((const av_alias##n*)(s))->u##n)
572
573#ifndef AV_COPY16
574#   define AV_COPY16(d, s) AV_COPY(16, d, s)
575#endif
576
577#ifndef AV_COPY32
578#   define AV_COPY32(d, s) AV_COPY(32, d, s)
579#endif
580
581#ifndef AV_COPY64
582#   define AV_COPY64(d, s) AV_COPY(64, d, s)
583#endif
584
585#ifndef AV_COPY128
586#   define AV_COPY128(d, s)                    \
587    do {                                       \
588        AV_COPY64(d, s);                       \
589        AV_COPY64((char*)(d)+8, (char*)(s)+8); \
590    } while(0)
591#endif
592
593#define AV_SWAP(n, a, b) FFSWAP(av_alias##n, *(av_alias##n*)(a), *(av_alias##n*)(b))
594
595#ifndef AV_SWAP64
596#   define AV_SWAP64(a, b) AV_SWAP(64, a, b)
597#endif
598
599#define AV_ZERO(n, d) (((av_alias##n*)(d))->u##n = 0)
600
601#ifndef AV_ZERO16
602#   define AV_ZERO16(d) AV_ZERO(16, d)
603#endif
604
605#ifndef AV_ZERO32
606#   define AV_ZERO32(d) AV_ZERO(32, d)
607#endif
608
609#ifndef AV_ZERO64
610#   define AV_ZERO64(d) AV_ZERO(64, d)
611#endif
612
613#ifndef AV_ZERO128
614#   define AV_ZERO128(d)         \
615    do {                         \
616        AV_ZERO64(d);            \
617        AV_ZERO64((char*)(d)+8); \
618    } while(0)
619#endif
620
621#endif /* AVUTIL_INTREADWRITE_H */
622