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opt.c
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1 /*
2  * AVOptions
3  * Copyright (c) 2005 Michael Niedermayer <michaelni@gmx.at>
4  *
5  * This file is part of FFmpeg.
6  *
7  * FFmpeg is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU Lesser General Public
9  * License as published by the Free Software Foundation; either
10  * version 2.1 of the License, or (at your option) any later version.
11  *
12  * FFmpeg is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15  * Lesser General Public License for more details.
16  *
17  * You should have received a copy of the GNU Lesser General Public
18  * License along with FFmpeg; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20  */
21 
22 /**
23  * @file
24  * AVOptions
25  * @author Michael Niedermayer <michaelni@gmx.at>
26  */
27 
28 #include "avutil.h"
29 #include "avassert.h"
30 #include "avstring.h"
31 #include "channel_layout.h"
32 #include "common.h"
33 #include "dict.h"
34 #include "eval.h"
35 #include "log.h"
36 #include "parseutils.h"
37 #include "pixdesc.h"
38 #include "mathematics.h"
39 #include "opt.h"
40 #include "samplefmt.h"
41 #include "bprint.h"
42 
43 #include <float.h>
44 
45 const AVOption *av_opt_next(const void *obj, const AVOption *last)
46 {
47  const AVClass *class;
48  if (!obj)
49  return NULL;
50  class = *(const AVClass**)obj;
51  if (!last && class && class->option && class->option[0].name)
52  return class->option;
53  if (last && last[1].name)
54  return ++last;
55  return NULL;
56 }
57 
58 static int read_number(const AVOption *o, const void *dst, double *num, int *den, int64_t *intnum)
59 {
60  switch (o->type) {
61  case AV_OPT_TYPE_FLAGS:
62  *intnum = *(unsigned int*)dst;
63  return 0;
65  *intnum = *(enum AVPixelFormat *)dst;
66  return 0;
68  *intnum = *(enum AVSampleFormat *)dst;
69  return 0;
70  case AV_OPT_TYPE_BOOL:
71  case AV_OPT_TYPE_INT:
72  *intnum = *(int *)dst;
73  return 0;
76  case AV_OPT_TYPE_INT64:
77  case AV_OPT_TYPE_UINT64:
78  *intnum = *(int64_t *)dst;
79  return 0;
80  case AV_OPT_TYPE_FLOAT:
81  *num = *(float *)dst;
82  return 0;
83  case AV_OPT_TYPE_DOUBLE:
84  *num = *(double *)dst;
85  return 0;
87  *intnum = ((AVRational *)dst)->num;
88  *den = ((AVRational *)dst)->den;
89  return 0;
90  case AV_OPT_TYPE_CONST:
91  *num = o->default_val.dbl;
92  return 0;
93  }
94  return AVERROR(EINVAL);
95 }
96 
97 static int write_number(void *obj, const AVOption *o, void *dst, double num, int den, int64_t intnum)
98 {
99  if (o->type != AV_OPT_TYPE_FLAGS &&
100  (!den || o->max * den < num * intnum || o->min * den > num * intnum)) {
101  num = den ? num * intnum / den : (num && intnum ? INFINITY : NAN);
102  av_log(obj, AV_LOG_ERROR, "Value %f for parameter '%s' out of range [%g - %g]\n",
103  num, o->name, o->min, o->max);
104  return AVERROR(ERANGE);
105  }
106  if (o->type == AV_OPT_TYPE_FLAGS) {
107  double d = num*intnum/den;
108  if (d < -1.5 || d > 0xFFFFFFFF+0.5 || (llrint(d*256) & 255)) {
109  av_log(obj, AV_LOG_ERROR,
110  "Value %f for parameter '%s' is not a valid set of 32bit integer flags\n",
111  num*intnum/den, o->name);
112  return AVERROR(ERANGE);
113  }
114  }
115 
116  switch (o->type) {
118  *(enum AVPixelFormat *)dst = llrint(num / den) * intnum;
119  break;
121  *(enum AVSampleFormat *)dst = llrint(num / den) * intnum;
122  break;
123  case AV_OPT_TYPE_BOOL:
124  case AV_OPT_TYPE_FLAGS:
125  case AV_OPT_TYPE_INT:
126  *(int *)dst = llrint(num / den) * intnum;
127  break;
130  case AV_OPT_TYPE_INT64:{
131  double d = num / den;
132  if (intnum == 1 && d == (double)INT64_MAX) {
133  *(int64_t *)dst = INT64_MAX;
134  } else
135  *(int64_t *)dst = llrint(d) * intnum;
136  break;}
137  case AV_OPT_TYPE_UINT64:{
138  double d = num / den;
139  // We must special case uint64_t here as llrint() does not support values
140  // outside the int64_t range and there is no portable function which does
141  // "INT64_MAX + 1ULL" is used as it is representable exactly as IEEE double
142  // while INT64_MAX is not
143  if (intnum == 1 && d == (double)UINT64_MAX) {
144  *(uint64_t *)dst = UINT64_MAX;
145  } else if (d > INT64_MAX + 1ULL) {
146  *(uint64_t *)dst = (llrint(d - (INT64_MAX + 1ULL)) + (INT64_MAX + 1ULL))*intnum;
147  } else {
148  *(uint64_t *)dst = llrint(d) * intnum;
149  }
150  break;}
151  case AV_OPT_TYPE_FLOAT:
152  *(float *)dst = num * intnum / den;
153  break;
154  case AV_OPT_TYPE_DOUBLE:
155  *(double *)dst = num * intnum / den;
156  break;
159  if ((int) num == num)
160  *(AVRational *)dst = (AVRational) { num *intnum, den };
161  else
162  *(AVRational *)dst = av_d2q(num * intnum / den, 1 << 24);
163  break;
164  default:
165  return AVERROR(EINVAL);
166  }
167  return 0;
168 }
169 
170 static int hexchar2int(char c) {
171  if (c >= '0' && c <= '9')
172  return c - '0';
173  if (c >= 'a' && c <= 'f')
174  return c - 'a' + 10;
175  if (c >= 'A' && c <= 'F')
176  return c - 'A' + 10;
177  return -1;
178 }
179 
180 static int set_string_binary(void *obj, const AVOption *o, const char *val, uint8_t **dst)
181 {
182  int *lendst = (int *)(dst + 1);
183  uint8_t *bin, *ptr;
184  int len;
185 
186  av_freep(dst);
187  *lendst = 0;
188 
189  if (!val || !(len = strlen(val)))
190  return 0;
191 
192  if (len & 1)
193  return AVERROR(EINVAL);
194  len /= 2;
195 
196  ptr = bin = av_malloc(len);
197  if (!ptr)
198  return AVERROR(ENOMEM);
199  while (*val) {
200  int a = hexchar2int(*val++);
201  int b = hexchar2int(*val++);
202  if (a < 0 || b < 0) {
203  av_free(bin);
204  return AVERROR(EINVAL);
205  }
206  *ptr++ = (a << 4) | b;
207  }
208  *dst = bin;
209  *lendst = len;
210 
211  return 0;
212 }
213 
214 static int set_string(void *obj, const AVOption *o, const char *val, uint8_t **dst)
215 {
216  av_freep(dst);
217  *dst = av_strdup(val);
218  return *dst ? 0 : AVERROR(ENOMEM);
219 }
220 
221 #define DEFAULT_NUMVAL(opt) ((opt->type == AV_OPT_TYPE_INT64 || \
222  opt->type == AV_OPT_TYPE_UINT64 || \
223  opt->type == AV_OPT_TYPE_CONST || \
224  opt->type == AV_OPT_TYPE_FLAGS || \
225  opt->type == AV_OPT_TYPE_INT) \
226  ? opt->default_val.i64 \
227  : opt->default_val.dbl)
228 
229 static int set_string_number(void *obj, void *target_obj, const AVOption *o, const char *val, void *dst)
230 {
231  int ret = 0;
232  int num, den;
233  char c;
234 
235  if (sscanf(val, "%d%*1[:/]%d%c", &num, &den, &c) == 2) {
236  if ((ret = write_number(obj, o, dst, 1, den, num)) >= 0)
237  return ret;
238  ret = 0;
239  }
240 
241  for (;;) {
242  int i = 0;
243  char buf[256];
244  int cmd = 0;
245  double d;
246  int64_t intnum = 1;
247 
248  if (o->type == AV_OPT_TYPE_FLAGS) {
249  if (*val == '+' || *val == '-')
250  cmd = *(val++);
251  for (; i < sizeof(buf) - 1 && val[i] && val[i] != '+' && val[i] != '-'; i++)
252  buf[i] = val[i];
253  buf[i] = 0;
254  }
255 
256  {
257  const AVOption *o_named = av_opt_find(target_obj, i ? buf : val, o->unit, 0, 0);
258  int res;
259  int ci = 0;
260  double const_values[64];
261  const char * const_names[64];
262  if (o_named && o_named->type == AV_OPT_TYPE_CONST)
263  d = DEFAULT_NUMVAL(o_named);
264  else {
265  if (o->unit) {
266  for (o_named = NULL; o_named = av_opt_next(target_obj, o_named); ) {
267  if (o_named->type == AV_OPT_TYPE_CONST &&
268  o_named->unit &&
269  !strcmp(o_named->unit, o->unit)) {
270  if (ci + 6 >= FF_ARRAY_ELEMS(const_values)) {
271  av_log(obj, AV_LOG_ERROR, "const_values array too small for %s\n", o->unit);
272  return AVERROR_PATCHWELCOME;
273  }
274  const_names [ci ] = o_named->name;
275  const_values[ci++] = DEFAULT_NUMVAL(o_named);
276  }
277  }
278  }
279  const_names [ci ] = "default";
280  const_values[ci++] = DEFAULT_NUMVAL(o);
281  const_names [ci ] = "max";
282  const_values[ci++] = o->max;
283  const_names [ci ] = "min";
284  const_values[ci++] = o->min;
285  const_names [ci ] = "none";
286  const_values[ci++] = 0;
287  const_names [ci ] = "all";
288  const_values[ci++] = ~0;
289  const_names [ci] = NULL;
290  const_values[ci] = 0;
291 
292  res = av_expr_parse_and_eval(&d, i ? buf : val, const_names,
293  const_values, NULL, NULL, NULL, NULL, NULL, 0, obj);
294  if (res < 0) {
295  av_log(obj, AV_LOG_ERROR, "Unable to parse option value \"%s\"\n", val);
296  return res;
297  }
298  }
299  }
300  if (o->type == AV_OPT_TYPE_FLAGS) {
301  read_number(o, dst, NULL, NULL, &intnum);
302  if (cmd == '+')
303  d = intnum | (int64_t)d;
304  else if (cmd == '-')
305  d = intnum &~(int64_t)d;
306  }
307 
308  if ((ret = write_number(obj, o, dst, d, 1, 1)) < 0)
309  return ret;
310  val += i;
311  if (!i || !*val)
312  return 0;
313  }
314 }
315 
316 static int set_string_image_size(void *obj, const AVOption *o, const char *val, int *dst)
317 {
318  int ret;
319 
320  if (!val || !strcmp(val, "none")) {
321  dst[0] =
322  dst[1] = 0;
323  return 0;
324  }
325  ret = av_parse_video_size(dst, dst + 1, val);
326  if (ret < 0)
327  av_log(obj, AV_LOG_ERROR, "Unable to parse option value \"%s\" as image size\n", val);
328  return ret;
329 }
330 
331 static int set_string_video_rate(void *obj, const AVOption *o, const char *val, AVRational *dst)
332 {
333  int ret;
334  if (!val) {
335  ret = AVERROR(EINVAL);
336  } else {
337  ret = av_parse_video_rate(dst, val);
338  }
339  if (ret < 0)
340  av_log(obj, AV_LOG_ERROR, "Unable to parse option value \"%s\" as video rate\n", val);
341  return ret;
342 }
343 
344 static int set_string_color(void *obj, const AVOption *o, const char *val, uint8_t *dst)
345 {
346  int ret;
347 
348  if (!val) {
349  return 0;
350  } else {
351  ret = av_parse_color(dst, val, -1, obj);
352  if (ret < 0)
353  av_log(obj, AV_LOG_ERROR, "Unable to parse option value \"%s\" as color\n", val);
354  return ret;
355  }
356  return 0;
357 }
358 
359 static const char *get_bool_name(int val)
360 {
361  if (val < 0)
362  return "auto";
363  return val ? "true" : "false";
364 }
365 
366 static int set_string_bool(void *obj, const AVOption *o, const char *val, int *dst)
367 {
368  int n;
369 
370  if (!val)
371  return 0;
372 
373  if (!strcmp(val, "auto")) {
374  n = -1;
375  } else if (av_match_name(val, "true,y,yes,enable,enabled,on")) {
376  n = 1;
377  } else if (av_match_name(val, "false,n,no,disable,disabled,off")) {
378  n = 0;
379  } else {
380  char *end = NULL;
381  n = strtol(val, &end, 10);
382  if (val + strlen(val) != end)
383  goto fail;
384  }
385 
386  if (n < o->min || n > o->max)
387  goto fail;
388 
389  *dst = n;
390  return 0;
391 
392 fail:
393  av_log(obj, AV_LOG_ERROR, "Unable to parse option value \"%s\" as boolean\n", val);
394  return AVERROR(EINVAL);
395 }
396 
397 static int set_string_fmt(void *obj, const AVOption *o, const char *val, uint8_t *dst,
398  int fmt_nb, int ((*get_fmt)(const char *)), const char *desc)
399 {
400  int fmt, min, max;
401 
402  if (!val || !strcmp(val, "none")) {
403  fmt = -1;
404  } else {
405  fmt = get_fmt(val);
406  if (fmt == -1) {
407  char *tail;
408  fmt = strtol(val, &tail, 0);
409  if (*tail || (unsigned)fmt >= fmt_nb) {
410  av_log(obj, AV_LOG_ERROR,
411  "Unable to parse option value \"%s\" as %s\n", val, desc);
412  return AVERROR(EINVAL);
413  }
414  }
415  }
416 
417  min = FFMAX(o->min, -1);
418  max = FFMIN(o->max, fmt_nb-1);
419 
420  // hack for compatibility with old ffmpeg
421  if(min == 0 && max == 0) {
422  min = -1;
423  max = fmt_nb-1;
424  }
425 
426  if (fmt < min || fmt > max) {
427  av_log(obj, AV_LOG_ERROR,
428  "Value %d for parameter '%s' out of %s format range [%d - %d]\n",
429  fmt, o->name, desc, min, max);
430  return AVERROR(ERANGE);
431  }
432 
433  *(int *)dst = fmt;
434  return 0;
435 }
436 
437 static int set_string_pixel_fmt(void *obj, const AVOption *o, const char *val, uint8_t *dst)
438 {
439  return set_string_fmt(obj, o, val, dst,
440  AV_PIX_FMT_NB, av_get_pix_fmt, "pixel format");
441 }
442 
443 static int set_string_sample_fmt(void *obj, const AVOption *o, const char *val, uint8_t *dst)
444 {
445  return set_string_fmt(obj, o, val, dst,
446  AV_SAMPLE_FMT_NB, av_get_sample_fmt, "sample format");
447 }
448 
449 int av_opt_set(void *obj, const char *name, const char *val, int search_flags)
450 {
451  int ret = 0;
452  void *dst, *target_obj;
453  const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
454  if (!o || !target_obj)
456  if (!val && (o->type != AV_OPT_TYPE_STRING &&
461  return AVERROR(EINVAL);
462 
463  if (o->flags & AV_OPT_FLAG_READONLY)
464  return AVERROR(EINVAL);
465 
466  if (o->flags & AV_OPT_FLAG_DEPRECATED)
467  av_log(obj, AV_LOG_WARNING, "The \"%s\" option is deprecated: %s\n", name, o->help);
468 
469  dst = ((uint8_t *)target_obj) + o->offset;
470  switch (o->type) {
471  case AV_OPT_TYPE_BOOL:
472  return set_string_bool(obj, o, val, dst);
473  case AV_OPT_TYPE_STRING:
474  return set_string(obj, o, val, dst);
475  case AV_OPT_TYPE_BINARY:
476  return set_string_binary(obj, o, val, dst);
477  case AV_OPT_TYPE_FLAGS:
478  case AV_OPT_TYPE_INT:
479  case AV_OPT_TYPE_INT64:
480  case AV_OPT_TYPE_UINT64:
481  case AV_OPT_TYPE_FLOAT:
482  case AV_OPT_TYPE_DOUBLE:
484  return set_string_number(obj, target_obj, o, val, dst);
486  return set_string_image_size(obj, o, val, dst);
487  case AV_OPT_TYPE_VIDEO_RATE: {
488  AVRational tmp;
489  ret = set_string_video_rate(obj, o, val, &tmp);
490  if (ret < 0)
491  return ret;
492  return write_number(obj, o, dst, 1, tmp.den, tmp.num);
493  }
495  return set_string_pixel_fmt(obj, o, val, dst);
497  return set_string_sample_fmt(obj, o, val, dst);
499  if (!val) {
500  *(int64_t *)dst = 0;
501  return 0;
502  } else {
503  if ((ret = av_parse_time(dst, val, 1)) < 0)
504  av_log(obj, AV_LOG_ERROR, "Unable to parse option value \"%s\" as duration\n", val);
505  return ret;
506  }
507  break;
508  case AV_OPT_TYPE_COLOR:
509  return set_string_color(obj, o, val, dst);
511  if (!val || !strcmp(val, "none")) {
512  *(int64_t *)dst = 0;
513  } else {
514  int64_t cl = av_get_channel_layout(val);
515  if (!cl) {
516  av_log(obj, AV_LOG_ERROR, "Unable to parse option value \"%s\" as channel layout\n", val);
517  ret = AVERROR(EINVAL);
518  }
519  *(int64_t *)dst = cl;
520  return ret;
521  }
522  break;
523  }
524 
525  av_log(obj, AV_LOG_ERROR, "Invalid option type.\n");
526  return AVERROR(EINVAL);
527 }
528 
529 #define OPT_EVAL_NUMBER(name, opttype, vartype) \
530 int av_opt_eval_ ## name(void *obj, const AVOption *o, \
531  const char *val, vartype *name ## _out) \
532 { \
533  if (!o || o->type != opttype || o->flags & AV_OPT_FLAG_READONLY) \
534  return AVERROR(EINVAL); \
535  return set_string_number(obj, obj, o, val, name ## _out); \
536 }
537 
540 OPT_EVAL_NUMBER(int64, AV_OPT_TYPE_INT64, int64_t)
541 OPT_EVAL_NUMBER(float, AV_OPT_TYPE_FLOAT, float)
542 OPT_EVAL_NUMBER(double, AV_OPT_TYPE_DOUBLE, double)
544 
545 static int set_number(void *obj, const char *name, double num, int den, int64_t intnum,
546  int search_flags)
547 {
548  void *dst, *target_obj;
549  const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
550 
551  if (!o || !target_obj)
553 
554  if (o->flags & AV_OPT_FLAG_READONLY)
555  return AVERROR(EINVAL);
556 
557  dst = ((uint8_t *)target_obj) + o->offset;
558  return write_number(obj, o, dst, num, den, intnum);
559 }
560 
561 int av_opt_set_int(void *obj, const char *name, int64_t val, int search_flags)
562 {
563  return set_number(obj, name, 1, 1, val, search_flags);
564 }
565 
566 int av_opt_set_double(void *obj, const char *name, double val, int search_flags)
567 {
568  return set_number(obj, name, val, 1, 1, search_flags);
569 }
570 
571 int av_opt_set_q(void *obj, const char *name, AVRational val, int search_flags)
572 {
573  return set_number(obj, name, val.num, val.den, 1, search_flags);
574 }
575 
576 int av_opt_set_bin(void *obj, const char *name, const uint8_t *val, int len, int search_flags)
577 {
578  void *target_obj;
579  const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
580  uint8_t *ptr;
581  uint8_t **dst;
582  int *lendst;
583 
584  if (!o || !target_obj)
586 
588  return AVERROR(EINVAL);
589 
590  ptr = len ? av_malloc(len) : NULL;
591  if (len && !ptr)
592  return AVERROR(ENOMEM);
593 
594  dst = (uint8_t **)(((uint8_t *)target_obj) + o->offset);
595  lendst = (int *)(dst + 1);
596 
597  av_free(*dst);
598  *dst = ptr;
599  *lendst = len;
600  if (len)
601  memcpy(ptr, val, len);
602 
603  return 0;
604 }
605 
606 int av_opt_set_image_size(void *obj, const char *name, int w, int h, int search_flags)
607 {
608  void *target_obj;
609  const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
610 
611  if (!o || !target_obj)
613  if (o->type != AV_OPT_TYPE_IMAGE_SIZE) {
614  av_log(obj, AV_LOG_ERROR,
615  "The value set by option '%s' is not an image size.\n", o->name);
616  return AVERROR(EINVAL);
617  }
618  if (w<0 || h<0) {
619  av_log(obj, AV_LOG_ERROR,
620  "Invalid negative size value %dx%d for size '%s'\n", w, h, o->name);
621  return AVERROR(EINVAL);
622  }
623  *(int *)(((uint8_t *)target_obj) + o->offset) = w;
624  *(int *)(((uint8_t *)target_obj+sizeof(int)) + o->offset) = h;
625  return 0;
626 }
627 
628 int av_opt_set_video_rate(void *obj, const char *name, AVRational val, int search_flags)
629 {
630  void *target_obj;
631  const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
632 
633  if (!o || !target_obj)
635  if (o->type != AV_OPT_TYPE_VIDEO_RATE) {
636  av_log(obj, AV_LOG_ERROR,
637  "The value set by option '%s' is not a video rate.\n", o->name);
638  return AVERROR(EINVAL);
639  }
640  if (val.num <= 0 || val.den <= 0)
641  return AVERROR(EINVAL);
642  return set_number(obj, name, val.num, val.den, 1, search_flags);
643 }
644 
645 static int set_format(void *obj, const char *name, int fmt, int search_flags,
646  enum AVOptionType type, const char *desc, int nb_fmts)
647 {
648  void *target_obj;
649  const AVOption *o = av_opt_find2(obj, name, NULL, 0,
650  search_flags, &target_obj);
651  int min, max;
652 
653  if (!o || !target_obj)
655  if (o->type != type) {
656  av_log(obj, AV_LOG_ERROR,
657  "The value set by option '%s' is not a %s format", name, desc);
658  return AVERROR(EINVAL);
659  }
660 
661  min = FFMAX(o->min, -1);
662  max = FFMIN(o->max, nb_fmts-1);
663 
664  if (fmt < min || fmt > max) {
665  av_log(obj, AV_LOG_ERROR,
666  "Value %d for parameter '%s' out of %s format range [%d - %d]\n",
667  fmt, name, desc, min, max);
668  return AVERROR(ERANGE);
669  }
670  *(int *)(((uint8_t *)target_obj) + o->offset) = fmt;
671  return 0;
672 }
673 
674 int av_opt_set_pixel_fmt(void *obj, const char *name, enum AVPixelFormat fmt, int search_flags)
675 {
676  return set_format(obj, name, fmt, search_flags, AV_OPT_TYPE_PIXEL_FMT, "pixel", AV_PIX_FMT_NB);
677 }
678 
679 int av_opt_set_sample_fmt(void *obj, const char *name, enum AVSampleFormat fmt, int search_flags)
680 {
681  return set_format(obj, name, fmt, search_flags, AV_OPT_TYPE_SAMPLE_FMT, "sample", AV_SAMPLE_FMT_NB);
682 }
683 
684 int av_opt_set_channel_layout(void *obj, const char *name, int64_t cl, int search_flags)
685 {
686  void *target_obj;
687  const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
688 
689  if (!o || !target_obj)
691  if (o->type != AV_OPT_TYPE_CHANNEL_LAYOUT) {
692  av_log(obj, AV_LOG_ERROR,
693  "The value set by option '%s' is not a channel layout.\n", o->name);
694  return AVERROR(EINVAL);
695  }
696  *(int64_t *)(((uint8_t *)target_obj) + o->offset) = cl;
697  return 0;
698 }
699 
700 int av_opt_set_dict_val(void *obj, const char *name, const AVDictionary *val,
701  int search_flags)
702 {
703  void *target_obj;
704  AVDictionary **dst;
705  const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
706 
707  if (!o || !target_obj)
709  if (o->flags & AV_OPT_FLAG_READONLY)
710  return AVERROR(EINVAL);
711 
712  dst = (AVDictionary **)(((uint8_t *)target_obj) + o->offset);
713  av_dict_free(dst);
714  av_dict_copy(dst, val, 0);
715 
716  return 0;
717 }
718 
719 static void format_duration(char *buf, size_t size, int64_t d)
720 {
721  char *e;
722 
723  av_assert0(size >= 25);
724  if (d < 0 && d != INT64_MIN) {
725  *(buf++) = '-';
726  size--;
727  d = -d;
728  }
729  if (d == INT64_MAX)
730  snprintf(buf, size, "INT64_MAX");
731  else if (d == INT64_MIN)
732  snprintf(buf, size, "INT64_MIN");
733  else if (d > (int64_t)3600*1000000)
734  snprintf(buf, size, "%"PRId64":%02d:%02d.%06d", d / 3600000000,
735  (int)((d / 60000000) % 60),
736  (int)((d / 1000000) % 60),
737  (int)(d % 1000000));
738  else if (d > 60*1000000)
739  snprintf(buf, size, "%d:%02d.%06d",
740  (int)(d / 60000000),
741  (int)((d / 1000000) % 60),
742  (int)(d % 1000000));
743  else
744  snprintf(buf, size, "%d.%06d",
745  (int)(d / 1000000),
746  (int)(d % 1000000));
747  e = buf + strlen(buf);
748  while (e > buf && e[-1] == '0')
749  *(--e) = 0;
750  if (e > buf && e[-1] == '.')
751  *(--e) = 0;
752 }
753 
754 int av_opt_get(void *obj, const char *name, int search_flags, uint8_t **out_val)
755 {
756  void *dst, *target_obj;
757  const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
758  uint8_t *bin, buf[128];
759  int len, i, ret;
760  int64_t i64;
761 
762  if (!o || !target_obj || (o->offset<=0 && o->type != AV_OPT_TYPE_CONST))
764 
765  if (o->flags & AV_OPT_FLAG_DEPRECATED)
766  av_log(obj, AV_LOG_WARNING, "The \"%s\" option is deprecated: %s\n", name, o->help);
767 
768  dst = (uint8_t *)target_obj + o->offset;
769 
770  buf[0] = 0;
771  switch (o->type) {
772  case AV_OPT_TYPE_BOOL:
773  ret = snprintf(buf, sizeof(buf), "%s", (char *)av_x_if_null(get_bool_name(*(int *)dst), "invalid"));
774  break;
775  case AV_OPT_TYPE_FLAGS:
776  ret = snprintf(buf, sizeof(buf), "0x%08X", *(int *)dst);
777  break;
778  case AV_OPT_TYPE_INT:
779  ret = snprintf(buf, sizeof(buf), "%d", *(int *)dst);
780  break;
781  case AV_OPT_TYPE_INT64:
782  ret = snprintf(buf, sizeof(buf), "%"PRId64, *(int64_t *)dst);
783  break;
784  case AV_OPT_TYPE_UINT64:
785  ret = snprintf(buf, sizeof(buf), "%"PRIu64, *(uint64_t *)dst);
786  break;
787  case AV_OPT_TYPE_FLOAT:
788  ret = snprintf(buf, sizeof(buf), "%f", *(float *)dst);
789  break;
790  case AV_OPT_TYPE_DOUBLE:
791  ret = snprintf(buf, sizeof(buf), "%f", *(double *)dst);
792  break;
795  ret = snprintf(buf, sizeof(buf), "%d/%d", ((AVRational *)dst)->num, ((AVRational *)dst)->den);
796  break;
797  case AV_OPT_TYPE_CONST:
798  ret = snprintf(buf, sizeof(buf), "%f", o->default_val.dbl);
799  break;
800  case AV_OPT_TYPE_STRING:
801  if (*(uint8_t **)dst) {
802  *out_val = av_strdup(*(uint8_t **)dst);
803  } else if (search_flags & AV_OPT_ALLOW_NULL) {
804  *out_val = NULL;
805  return 0;
806  } else {
807  *out_val = av_strdup("");
808  }
809  return *out_val ? 0 : AVERROR(ENOMEM);
810  case AV_OPT_TYPE_BINARY:
811  if (!*(uint8_t **)dst && (search_flags & AV_OPT_ALLOW_NULL)) {
812  *out_val = NULL;
813  return 0;
814  }
815  len = *(int *)(((uint8_t *)dst) + sizeof(uint8_t *));
816  if ((uint64_t)len * 2 + 1 > INT_MAX)
817  return AVERROR(EINVAL);
818  if (!(*out_val = av_malloc(len * 2 + 1)))
819  return AVERROR(ENOMEM);
820  if (!len) {
821  *out_val[0] = '\0';
822  return 0;
823  }
824  bin = *(uint8_t **)dst;
825  for (i = 0; i < len; i++)
826  snprintf(*out_val + i * 2, 3, "%02X", bin[i]);
827  return 0;
829  ret = snprintf(buf, sizeof(buf), "%dx%d", ((int *)dst)[0], ((int *)dst)[1]);
830  break;
832  ret = snprintf(buf, sizeof(buf), "%s", (char *)av_x_if_null(av_get_pix_fmt_name(*(enum AVPixelFormat *)dst), "none"));
833  break;
835  ret = snprintf(buf, sizeof(buf), "%s", (char *)av_x_if_null(av_get_sample_fmt_name(*(enum AVSampleFormat *)dst), "none"));
836  break;
838  i64 = *(int64_t *)dst;
839  format_duration(buf, sizeof(buf), i64);
840  ret = strlen(buf); // no overflow possible, checked by an assert
841  break;
842  case AV_OPT_TYPE_COLOR:
843  ret = snprintf(buf, sizeof(buf), "0x%02x%02x%02x%02x",
844  (int)((uint8_t *)dst)[0], (int)((uint8_t *)dst)[1],
845  (int)((uint8_t *)dst)[2], (int)((uint8_t *)dst)[3]);
846  break;
848  i64 = *(int64_t *)dst;
849  ret = snprintf(buf, sizeof(buf), "0x%"PRIx64, i64);
850  break;
851  default:
852  return AVERROR(EINVAL);
853  }
854 
855  if (ret >= sizeof(buf))
856  return AVERROR(EINVAL);
857  *out_val = av_strdup(buf);
858  return *out_val ? 0 : AVERROR(ENOMEM);
859 }
860 
861 static int get_number(void *obj, const char *name, const AVOption **o_out, double *num, int *den, int64_t *intnum,
862  int search_flags)
863 {
864  void *dst, *target_obj;
865  const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
866  if (!o || !target_obj)
867  goto error;
868 
869  dst = ((uint8_t *)target_obj) + o->offset;
870 
871  if (o_out) *o_out= o;
872 
873  return read_number(o, dst, num, den, intnum);
874 
875 error:
876  *den =
877  *intnum = 0;
878  return -1;
879 }
880 
881 int av_opt_get_int(void *obj, const char *name, int search_flags, int64_t *out_val)
882 {
883  int64_t intnum = 1;
884  double num = 1;
885  int ret, den = 1;
886 
887  if ((ret = get_number(obj, name, NULL, &num, &den, &intnum, search_flags)) < 0)
888  return ret;
889  *out_val = num * intnum / den;
890  return 0;
891 }
892 
893 int av_opt_get_double(void *obj, const char *name, int search_flags, double *out_val)
894 {
895  int64_t intnum = 1;
896  double num = 1;
897  int ret, den = 1;
898 
899  if ((ret = get_number(obj, name, NULL, &num, &den, &intnum, search_flags)) < 0)
900  return ret;
901  *out_val = num * intnum / den;
902  return 0;
903 }
904 
905 int av_opt_get_q(void *obj, const char *name, int search_flags, AVRational *out_val)
906 {
907  int64_t intnum = 1;
908  double num = 1;
909  int ret, den = 1;
910 
911  if ((ret = get_number(obj, name, NULL, &num, &den, &intnum, search_flags)) < 0)
912  return ret;
913 
914  if (num == 1.0 && (int)intnum == intnum)
915  *out_val = (AVRational){intnum, den};
916  else
917  *out_val = av_d2q(num*intnum/den, 1<<24);
918  return 0;
919 }
920 
921 int av_opt_get_image_size(void *obj, const char *name, int search_flags, int *w_out, int *h_out)
922 {
923  void *dst, *target_obj;
924  const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
925  if (!o || !target_obj)
927  if (o->type != AV_OPT_TYPE_IMAGE_SIZE) {
928  av_log(obj, AV_LOG_ERROR,
929  "The value for option '%s' is not an image size.\n", name);
930  return AVERROR(EINVAL);
931  }
932 
933  dst = ((uint8_t*)target_obj) + o->offset;
934  if (w_out) *w_out = *(int *)dst;
935  if (h_out) *h_out = *((int *)dst+1);
936  return 0;
937 }
938 
939 int av_opt_get_video_rate(void *obj, const char *name, int search_flags, AVRational *out_val)
940 {
941  int64_t intnum = 1;
942  double num = 1;
943  int ret, den = 1;
944 
945  if ((ret = get_number(obj, name, NULL, &num, &den, &intnum, search_flags)) < 0)
946  return ret;
947 
948  if (num == 1.0 && (int)intnum == intnum)
949  *out_val = (AVRational) { intnum, den };
950  else
951  *out_val = av_d2q(num * intnum / den, 1 << 24);
952  return 0;
953 }
954 
955 static int get_format(void *obj, const char *name, int search_flags, int *out_fmt,
956  enum AVOptionType type, const char *desc)
957 {
958  void *dst, *target_obj;
959  const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
960  if (!o || !target_obj)
962  if (o->type != type) {
963  av_log(obj, AV_LOG_ERROR,
964  "The value for option '%s' is not a %s format.\n", desc, name);
965  return AVERROR(EINVAL);
966  }
967 
968  dst = ((uint8_t*)target_obj) + o->offset;
969  *out_fmt = *(int *)dst;
970  return 0;
971 }
972 
973 int av_opt_get_pixel_fmt(void *obj, const char *name, int search_flags, enum AVPixelFormat *out_fmt)
974 {
975  return get_format(obj, name, search_flags, out_fmt, AV_OPT_TYPE_PIXEL_FMT, "pixel");
976 }
977 
978 int av_opt_get_sample_fmt(void *obj, const char *name, int search_flags, enum AVSampleFormat *out_fmt)
979 {
980  return get_format(obj, name, search_flags, out_fmt, AV_OPT_TYPE_SAMPLE_FMT, "sample");
981 }
982 
983 int av_opt_get_channel_layout(void *obj, const char *name, int search_flags, int64_t *cl)
984 {
985  void *dst, *target_obj;
986  const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
987  if (!o || !target_obj)
989  if (o->type != AV_OPT_TYPE_CHANNEL_LAYOUT) {
990  av_log(obj, AV_LOG_ERROR,
991  "The value for option '%s' is not a channel layout.\n", name);
992  return AVERROR(EINVAL);
993  }
994 
995  dst = ((uint8_t*)target_obj) + o->offset;
996  *cl = *(int64_t *)dst;
997  return 0;
998 }
999 
1000 int av_opt_get_dict_val(void *obj, const char *name, int search_flags, AVDictionary **out_val)
1001 {
1002  void *target_obj;
1003  AVDictionary *src;
1004  const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
1005 
1006  if (!o || !target_obj)
1007  return AVERROR_OPTION_NOT_FOUND;
1008  if (o->type != AV_OPT_TYPE_DICT)
1009  return AVERROR(EINVAL);
1010 
1011  src = *(AVDictionary **)(((uint8_t *)target_obj) + o->offset);
1012  av_dict_copy(out_val, src, 0);
1013 
1014  return 0;
1015 }
1016 
1017 int av_opt_flag_is_set(void *obj, const char *field_name, const char *flag_name)
1018 {
1019  const AVOption *field = av_opt_find(obj, field_name, NULL, 0, 0);
1020  const AVOption *flag = av_opt_find(obj, flag_name,
1021  field ? field->unit : NULL, 0, 0);
1022  int64_t res;
1023 
1024  if (!field || !flag || flag->type != AV_OPT_TYPE_CONST ||
1025  av_opt_get_int(obj, field_name, 0, &res) < 0)
1026  return 0;
1027  return res & flag->default_val.i64;
1028 }
1029 
1030 static void log_value(void *av_log_obj, int level, double d)
1031 {
1032  if (d == INT_MAX) {
1033  av_log(av_log_obj, level, "INT_MAX");
1034  } else if (d == INT_MIN) {
1035  av_log(av_log_obj, level, "INT_MIN");
1036  } else if (d == UINT32_MAX) {
1037  av_log(av_log_obj, level, "UINT32_MAX");
1038  } else if (d == (double)INT64_MAX) {
1039  av_log(av_log_obj, level, "I64_MAX");
1040  } else if (d == INT64_MIN) {
1041  av_log(av_log_obj, level, "I64_MIN");
1042  } else if (d == FLT_MAX) {
1043  av_log(av_log_obj, level, "FLT_MAX");
1044  } else if (d == FLT_MIN) {
1045  av_log(av_log_obj, level, "FLT_MIN");
1046  } else if (d == -FLT_MAX) {
1047  av_log(av_log_obj, level, "-FLT_MAX");
1048  } else if (d == -FLT_MIN) {
1049  av_log(av_log_obj, level, "-FLT_MIN");
1050  } else if (d == DBL_MAX) {
1051  av_log(av_log_obj, level, "DBL_MAX");
1052  } else if (d == DBL_MIN) {
1053  av_log(av_log_obj, level, "DBL_MIN");
1054  } else if (d == -DBL_MAX) {
1055  av_log(av_log_obj, level, "-DBL_MAX");
1056  } else if (d == -DBL_MIN) {
1057  av_log(av_log_obj, level, "-DBL_MIN");
1058  } else {
1059  av_log(av_log_obj, level, "%g", d);
1060  }
1061 }
1062 
1063 static const char *get_opt_const_name(void *obj, const char *unit, int64_t value)
1064 {
1065  const AVOption *opt = NULL;
1066 
1067  if (!unit)
1068  return NULL;
1069  while ((opt = av_opt_next(obj, opt)))
1070  if (opt->type == AV_OPT_TYPE_CONST && !strcmp(opt->unit, unit) &&
1071  opt->default_val.i64 == value)
1072  return opt->name;
1073  return NULL;
1074 }
1075 
1076 static char *get_opt_flags_string(void *obj, const char *unit, int64_t value)
1077 {
1078  const AVOption *opt = NULL;
1079  char flags[512];
1080 
1081  flags[0] = 0;
1082  if (!unit)
1083  return NULL;
1084  while ((opt = av_opt_next(obj, opt))) {
1085  if (opt->type == AV_OPT_TYPE_CONST && !strcmp(opt->unit, unit) &&
1086  opt->default_val.i64 & value) {
1087  if (flags[0])
1088  av_strlcatf(flags, sizeof(flags), "+");
1089  av_strlcatf(flags, sizeof(flags), "%s", opt->name);
1090  }
1091  }
1092  if (flags[0])
1093  return av_strdup(flags);
1094  return NULL;
1095 }
1096 
1097 static void opt_list(void *obj, void *av_log_obj, const char *unit,
1098  int req_flags, int rej_flags)
1099 {
1100  const AVOption *opt = NULL;
1101  AVOptionRanges *r;
1102  int i;
1103 
1104  while ((opt = av_opt_next(obj, opt))) {
1105  if (!(opt->flags & req_flags) || (opt->flags & rej_flags))
1106  continue;
1107 
1108  /* Don't print CONST's on level one.
1109  * Don't print anything but CONST's on level two.
1110  * Only print items from the requested unit.
1111  */
1112  if (!unit && opt->type == AV_OPT_TYPE_CONST)
1113  continue;
1114  else if (unit && opt->type != AV_OPT_TYPE_CONST)
1115  continue;
1116  else if (unit && opt->type == AV_OPT_TYPE_CONST && strcmp(unit, opt->unit))
1117  continue;
1118  else if (unit && opt->type == AV_OPT_TYPE_CONST)
1119  av_log(av_log_obj, AV_LOG_INFO, " %-15s ", opt->name);
1120  else
1121  av_log(av_log_obj, AV_LOG_INFO, " %s%-17s ",
1122  (opt->flags & AV_OPT_FLAG_FILTERING_PARAM) ? "" : "-",
1123  opt->name);
1124 
1125  switch (opt->type) {
1126  case AV_OPT_TYPE_FLAGS:
1127  av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<flags>");
1128  break;
1129  case AV_OPT_TYPE_INT:
1130  av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<int>");
1131  break;
1132  case AV_OPT_TYPE_INT64:
1133  av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<int64>");
1134  break;
1135  case AV_OPT_TYPE_UINT64:
1136  av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<uint64>");
1137  break;
1138  case AV_OPT_TYPE_DOUBLE:
1139  av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<double>");
1140  break;
1141  case AV_OPT_TYPE_FLOAT:
1142  av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<float>");
1143  break;
1144  case AV_OPT_TYPE_STRING:
1145  av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<string>");
1146  break;
1147  case AV_OPT_TYPE_RATIONAL:
1148  av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<rational>");
1149  break;
1150  case AV_OPT_TYPE_BINARY:
1151  av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<binary>");
1152  break;
1154  av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<image_size>");
1155  break;
1157  av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<video_rate>");
1158  break;
1159  case AV_OPT_TYPE_PIXEL_FMT:
1160  av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<pix_fmt>");
1161  break;
1163  av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<sample_fmt>");
1164  break;
1165  case AV_OPT_TYPE_DURATION:
1166  av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<duration>");
1167  break;
1168  case AV_OPT_TYPE_COLOR:
1169  av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<color>");
1170  break;
1172  av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<channel_layout>");
1173  break;
1174  case AV_OPT_TYPE_BOOL:
1175  av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<boolean>");
1176  break;
1177  case AV_OPT_TYPE_CONST:
1178  default:
1179  av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "");
1180  break;
1181  }
1182  av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_ENCODING_PARAM) ? 'E' : '.');
1183  av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_DECODING_PARAM) ? 'D' : '.');
1184  av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_FILTERING_PARAM)? 'F' : '.');
1185  av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_VIDEO_PARAM ) ? 'V' : '.');
1186  av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_AUDIO_PARAM ) ? 'A' : '.');
1187  av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_SUBTITLE_PARAM) ? 'S' : '.');
1188  av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_EXPORT) ? 'X' : '.');
1189  av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_READONLY) ? 'R' : '.');
1190  av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_BSF_PARAM) ? 'B' : '.');
1191 
1192  if (opt->help)
1193  av_log(av_log_obj, AV_LOG_INFO, " %s", opt->help);
1194 
1195  if (av_opt_query_ranges(&r, obj, opt->name, AV_OPT_SEARCH_FAKE_OBJ) >= 0) {
1196  switch (opt->type) {
1197  case AV_OPT_TYPE_INT:
1198  case AV_OPT_TYPE_INT64:
1199  case AV_OPT_TYPE_UINT64:
1200  case AV_OPT_TYPE_DOUBLE:
1201  case AV_OPT_TYPE_FLOAT:
1202  case AV_OPT_TYPE_RATIONAL:
1203  for (i = 0; i < r->nb_ranges; i++) {
1204  av_log(av_log_obj, AV_LOG_INFO, " (from ");
1205  log_value(av_log_obj, AV_LOG_INFO, r->range[i]->value_min);
1206  av_log(av_log_obj, AV_LOG_INFO, " to ");
1207  log_value(av_log_obj, AV_LOG_INFO, r->range[i]->value_max);
1208  av_log(av_log_obj, AV_LOG_INFO, ")");
1209  }
1210  break;
1211  }
1212  av_opt_freep_ranges(&r);
1213  }
1214 
1215  if (opt->type != AV_OPT_TYPE_CONST &&
1216  opt->type != AV_OPT_TYPE_BINARY &&
1217  !((opt->type == AV_OPT_TYPE_COLOR ||
1218  opt->type == AV_OPT_TYPE_IMAGE_SIZE ||
1219  opt->type == AV_OPT_TYPE_STRING ||
1220  opt->type == AV_OPT_TYPE_VIDEO_RATE) &&
1221  !opt->default_val.str)) {
1222  av_log(av_log_obj, AV_LOG_INFO, " (default ");
1223  switch (opt->type) {
1224  case AV_OPT_TYPE_BOOL:
1225  av_log(av_log_obj, AV_LOG_INFO, "%s", (char *)av_x_if_null(get_bool_name(opt->default_val.i64), "invalid"));
1226  break;
1227  case AV_OPT_TYPE_FLAGS: {
1228  char *def_flags = get_opt_flags_string(obj, opt->unit, opt->default_val.i64);
1229  if (def_flags) {
1230  av_log(av_log_obj, AV_LOG_INFO, "%s", def_flags);
1231  av_freep(&def_flags);
1232  } else {
1233  av_log(av_log_obj, AV_LOG_INFO, "%"PRIX64, opt->default_val.i64);
1234  }
1235  break;
1236  }
1237  case AV_OPT_TYPE_DURATION: {
1238  char buf[25];
1239  format_duration(buf, sizeof(buf), opt->default_val.i64);
1240  av_log(av_log_obj, AV_LOG_INFO, "%s", buf);
1241  break;
1242  }
1243  case AV_OPT_TYPE_INT:
1244  case AV_OPT_TYPE_UINT64:
1245  case AV_OPT_TYPE_INT64: {
1246  const char *def_const = get_opt_const_name(obj, opt->unit, opt->default_val.i64);
1247  if (def_const)
1248  av_log(av_log_obj, AV_LOG_INFO, "%s", def_const);
1249  else
1250  log_value(av_log_obj, AV_LOG_INFO, opt->default_val.i64);
1251  break;
1252  }
1253  case AV_OPT_TYPE_DOUBLE:
1254  case AV_OPT_TYPE_FLOAT:
1255  log_value(av_log_obj, AV_LOG_INFO, opt->default_val.dbl);
1256  break;
1257  case AV_OPT_TYPE_RATIONAL: {
1258  AVRational q = av_d2q(opt->default_val.dbl, INT_MAX);
1259  av_log(av_log_obj, AV_LOG_INFO, "%d/%d", q.num, q.den); }
1260  break;
1261  case AV_OPT_TYPE_PIXEL_FMT:
1262  av_log(av_log_obj, AV_LOG_INFO, "%s", (char *)av_x_if_null(av_get_pix_fmt_name(opt->default_val.i64), "none"));
1263  break;
1265  av_log(av_log_obj, AV_LOG_INFO, "%s", (char *)av_x_if_null(av_get_sample_fmt_name(opt->default_val.i64), "none"));
1266  break;
1267  case AV_OPT_TYPE_COLOR:
1269  case AV_OPT_TYPE_STRING:
1271  av_log(av_log_obj, AV_LOG_INFO, "\"%s\"", opt->default_val.str);
1272  break;
1274  av_log(av_log_obj, AV_LOG_INFO, "0x%"PRIx64, opt->default_val.i64);
1275  break;
1276  }
1277  av_log(av_log_obj, AV_LOG_INFO, ")");
1278  }
1279 
1280  av_log(av_log_obj, AV_LOG_INFO, "\n");
1281  if (opt->unit && opt->type != AV_OPT_TYPE_CONST)
1282  opt_list(obj, av_log_obj, opt->unit, req_flags, rej_flags);
1283  }
1284 }
1285 
1286 int av_opt_show2(void *obj, void *av_log_obj, int req_flags, int rej_flags)
1287 {
1288  if (!obj)
1289  return -1;
1290 
1291  av_log(av_log_obj, AV_LOG_INFO, "%s AVOptions:\n", (*(AVClass **)obj)->class_name);
1292 
1293  opt_list(obj, av_log_obj, NULL, req_flags, rej_flags);
1294 
1295  return 0;
1296 }
1297 
1299 {
1300  av_opt_set_defaults2(s, 0, 0);
1301 }
1302 
1303 void av_opt_set_defaults2(void *s, int mask, int flags)
1304 {
1305  const AVOption *opt = NULL;
1306  while ((opt = av_opt_next(s, opt))) {
1307  void *dst = ((uint8_t*)s) + opt->offset;
1308 
1309  if ((opt->flags & mask) != flags)
1310  continue;
1311 
1312  if (opt->flags & AV_OPT_FLAG_READONLY)
1313  continue;
1314 
1315  switch (opt->type) {
1316  case AV_OPT_TYPE_CONST:
1317  /* Nothing to be done here */
1318  break;
1319  case AV_OPT_TYPE_BOOL:
1320  case AV_OPT_TYPE_FLAGS:
1321  case AV_OPT_TYPE_INT:
1322  case AV_OPT_TYPE_INT64:
1323  case AV_OPT_TYPE_UINT64:
1324  case AV_OPT_TYPE_DURATION:
1326  case AV_OPT_TYPE_PIXEL_FMT:
1328  write_number(s, opt, dst, 1, 1, opt->default_val.i64);
1329  break;
1330  case AV_OPT_TYPE_DOUBLE:
1331  case AV_OPT_TYPE_FLOAT: {
1332  double val;
1333  val = opt->default_val.dbl;
1334  write_number(s, opt, dst, val, 1, 1);
1335  }
1336  break;
1337  case AV_OPT_TYPE_RATIONAL: {
1338  AVRational val;
1339  val = av_d2q(opt->default_val.dbl, INT_MAX);
1340  write_number(s, opt, dst, 1, val.den, val.num);
1341  }
1342  break;
1343  case AV_OPT_TYPE_COLOR:
1344  set_string_color(s, opt, opt->default_val.str, dst);
1345  break;
1346  case AV_OPT_TYPE_STRING:
1347  set_string(s, opt, opt->default_val.str, dst);
1348  break;
1350  set_string_image_size(s, opt, opt->default_val.str, dst);
1351  break;
1353  set_string_video_rate(s, opt, opt->default_val.str, dst);
1354  break;
1355  case AV_OPT_TYPE_BINARY:
1356  set_string_binary(s, opt, opt->default_val.str, dst);
1357  break;
1358  case AV_OPT_TYPE_DICT:
1359  /* Cannot set defaults for these types */
1360  break;
1361  default:
1362  av_log(s, AV_LOG_DEBUG, "AVOption type %d of option %s not implemented yet\n",
1363  opt->type, opt->name);
1364  }
1365  }
1366 }
1367 
1368 /**
1369  * Store the value in the field in ctx that is named like key.
1370  * ctx must be an AVClass context, storing is done using AVOptions.
1371  *
1372  * @param buf the string to parse, buf will be updated to point at the
1373  * separator just after the parsed key/value pair
1374  * @param key_val_sep a 0-terminated list of characters used to
1375  * separate key from value
1376  * @param pairs_sep a 0-terminated list of characters used to separate
1377  * two pairs from each other
1378  * @return 0 if the key/value pair has been successfully parsed and
1379  * set, or a negative value corresponding to an AVERROR code in case
1380  * of error:
1381  * AVERROR(EINVAL) if the key/value pair cannot be parsed,
1382  * the error code issued by av_opt_set() if the key/value pair
1383  * cannot be set
1384  */
1385 static int parse_key_value_pair(void *ctx, const char **buf,
1386  const char *key_val_sep, const char *pairs_sep)
1387 {
1388  char *key = av_get_token(buf, key_val_sep);
1389  char *val;
1390  int ret;
1391 
1392  if (!key)
1393  return AVERROR(ENOMEM);
1394 
1395  if (*key && strspn(*buf, key_val_sep)) {
1396  (*buf)++;
1397  val = av_get_token(buf, pairs_sep);
1398  if (!val) {
1399  av_freep(&key);
1400  return AVERROR(ENOMEM);
1401  }
1402  } else {
1403  av_log(ctx, AV_LOG_ERROR, "Missing key or no key/value separator found after key '%s'\n", key);
1404  av_free(key);
1405  return AVERROR(EINVAL);
1406  }
1407 
1408  av_log(ctx, AV_LOG_DEBUG, "Setting entry with key '%s' to value '%s'\n", key, val);
1409 
1410  ret = av_opt_set(ctx, key, val, AV_OPT_SEARCH_CHILDREN);
1411  if (ret == AVERROR_OPTION_NOT_FOUND)
1412  av_log(ctx, AV_LOG_ERROR, "Key '%s' not found.\n", key);
1413 
1414  av_free(key);
1415  av_free(val);
1416  return ret;
1417 }
1418 
1419 int av_set_options_string(void *ctx, const char *opts,
1420  const char *key_val_sep, const char *pairs_sep)
1421 {
1422  int ret, count = 0;
1423 
1424  if (!opts)
1425  return 0;
1426 
1427  while (*opts) {
1428  if ((ret = parse_key_value_pair(ctx, &opts, key_val_sep, pairs_sep)) < 0)
1429  return ret;
1430  count++;
1431 
1432  if (*opts)
1433  opts++;
1434  }
1435 
1436  return count;
1437 }
1438 
1439 #define WHITESPACES " \n\t\r"
1440 
1441 static int is_key_char(char c)
1442 {
1443  return (unsigned)((c | 32) - 'a') < 26 ||
1444  (unsigned)(c - '0') < 10 ||
1445  c == '-' || c == '_' || c == '/' || c == '.';
1446 }
1447 
1448 /**
1449  * Read a key from a string.
1450  *
1451  * The key consists of is_key_char characters and must be terminated by a
1452  * character from the delim string; spaces are ignored.
1453  *
1454  * @return 0 for success (even with ellipsis), <0 for failure
1455  */
1456 static int get_key(const char **ropts, const char *delim, char **rkey)
1457 {
1458  const char *opts = *ropts;
1459  const char *key_start, *key_end;
1460 
1461  key_start = opts += strspn(opts, WHITESPACES);
1462  while (is_key_char(*opts))
1463  opts++;
1464  key_end = opts;
1465  opts += strspn(opts, WHITESPACES);
1466  if (!*opts || !strchr(delim, *opts))
1467  return AVERROR(EINVAL);
1468  opts++;
1469  if (!(*rkey = av_malloc(key_end - key_start + 1)))
1470  return AVERROR(ENOMEM);
1471  memcpy(*rkey, key_start, key_end - key_start);
1472  (*rkey)[key_end - key_start] = 0;
1473  *ropts = opts;
1474  return 0;
1475 }
1476 
1477 int av_opt_get_key_value(const char **ropts,
1478  const char *key_val_sep, const char *pairs_sep,
1479  unsigned flags,
1480  char **rkey, char **rval)
1481 {
1482  int ret;
1483  char *key = NULL, *val;
1484  const char *opts = *ropts;
1485 
1486  if ((ret = get_key(&opts, key_val_sep, &key)) < 0 &&
1487  !(flags & AV_OPT_FLAG_IMPLICIT_KEY))
1488  return AVERROR(EINVAL);
1489  if (!(val = av_get_token(&opts, pairs_sep))) {
1490  av_free(key);
1491  return AVERROR(ENOMEM);
1492  }
1493  *ropts = opts;
1494  *rkey = key;
1495  *rval = val;
1496  return 0;
1497 }
1498 
1499 int av_opt_set_from_string(void *ctx, const char *opts,
1500  const char *const *shorthand,
1501  const char *key_val_sep, const char *pairs_sep)
1502 {
1503  int ret, count = 0;
1504  const char *dummy_shorthand = NULL;
1505  char *av_uninit(parsed_key), *av_uninit(value);
1506  const char *key;
1507 
1508  if (!opts)
1509  return 0;
1510  if (!shorthand)
1511  shorthand = &dummy_shorthand;
1512 
1513  while (*opts) {
1514  ret = av_opt_get_key_value(&opts, key_val_sep, pairs_sep,
1515  *shorthand ? AV_OPT_FLAG_IMPLICIT_KEY : 0,
1516  &parsed_key, &value);
1517  if (ret < 0) {
1518  if (ret == AVERROR(EINVAL))
1519  av_log(ctx, AV_LOG_ERROR, "No option name near '%s'\n", opts);
1520  else
1521  av_log(ctx, AV_LOG_ERROR, "Unable to parse '%s': %s\n", opts,
1522  av_err2str(ret));
1523  return ret;
1524  }
1525  if (*opts)
1526  opts++;
1527  if (parsed_key) {
1528  key = parsed_key;
1529  while (*shorthand) /* discard all remaining shorthand */
1530  shorthand++;
1531  } else {
1532  key = *(shorthand++);
1533  }
1534 
1535  av_log(ctx, AV_LOG_DEBUG, "Setting '%s' to value '%s'\n", key, value);
1536  if ((ret = av_opt_set(ctx, key, value, 0)) < 0) {
1537  if (ret == AVERROR_OPTION_NOT_FOUND)
1538  av_log(ctx, AV_LOG_ERROR, "Option '%s' not found\n", key);
1539  av_free(value);
1540  av_free(parsed_key);
1541  return ret;
1542  }
1543 
1544  av_free(value);
1545  av_free(parsed_key);
1546  count++;
1547  }
1548  return count;
1549 }
1550 
1551 void av_opt_free(void *obj)
1552 {
1553  const AVOption *o = NULL;
1554  while ((o = av_opt_next(obj, o))) {
1555  switch (o->type) {
1556  case AV_OPT_TYPE_STRING:
1557  case AV_OPT_TYPE_BINARY:
1558  av_freep((uint8_t *)obj + o->offset);
1559  break;
1560 
1561  case AV_OPT_TYPE_DICT:
1562  av_dict_free((AVDictionary **)(((uint8_t *)obj) + o->offset));
1563  break;
1564 
1565  default:
1566  break;
1567  }
1568  }
1569 }
1570 
1571 int av_opt_set_dict2(void *obj, AVDictionary **options, int search_flags)
1572 {
1573  AVDictionaryEntry *t = NULL;
1574  AVDictionary *tmp = NULL;
1575  int ret = 0;
1576 
1577  if (!options)
1578  return 0;
1579 
1580  while ((t = av_dict_get(*options, "", t, AV_DICT_IGNORE_SUFFIX))) {
1581  ret = av_opt_set(obj, t->key, t->value, search_flags);
1582  if (ret == AVERROR_OPTION_NOT_FOUND)
1583  ret = av_dict_set(&tmp, t->key, t->value, 0);
1584  if (ret < 0) {
1585  av_log(obj, AV_LOG_ERROR, "Error setting option %s to value %s.\n", t->key, t->value);
1586  av_dict_free(&tmp);
1587  return ret;
1588  }
1589  ret = 0;
1590  }
1591  av_dict_free(options);
1592  *options = tmp;
1593  return ret;
1594 }
1595 
1597 {
1598  return av_opt_set_dict2(obj, options, 0);
1599 }
1600 
1601 const AVOption *av_opt_find(void *obj, const char *name, const char *unit,
1602  int opt_flags, int search_flags)
1603 {
1604  return av_opt_find2(obj, name, unit, opt_flags, search_flags, NULL);
1605 }
1606 
1607 const AVOption *av_opt_find2(void *obj, const char *name, const char *unit,
1608  int opt_flags, int search_flags, void **target_obj)
1609 {
1610  const AVClass *c;
1611  const AVOption *o = NULL;
1612 
1613  if(!obj)
1614  return NULL;
1615 
1616  c= *(AVClass**)obj;
1617 
1618  if (!c)
1619  return NULL;
1620 
1621  if (search_flags & AV_OPT_SEARCH_CHILDREN) {
1622  if (search_flags & AV_OPT_SEARCH_FAKE_OBJ) {
1623  const AVClass *child = NULL;
1624  while (child = av_opt_child_class_next(c, child))
1625  if (o = av_opt_find2(&child, name, unit, opt_flags, search_flags, NULL))
1626  return o;
1627  } else {
1628  void *child = NULL;
1629  while (child = av_opt_child_next(obj, child))
1630  if (o = av_opt_find2(child, name, unit, opt_flags, search_flags, target_obj))
1631  return o;
1632  }
1633  }
1634 
1635  while (o = av_opt_next(obj, o)) {
1636  if (!strcmp(o->name, name) && (o->flags & opt_flags) == opt_flags &&
1637  ((!unit && o->type != AV_OPT_TYPE_CONST) ||
1638  (unit && o->type == AV_OPT_TYPE_CONST && o->unit && !strcmp(o->unit, unit)))) {
1639  if (target_obj) {
1640  if (!(search_flags & AV_OPT_SEARCH_FAKE_OBJ))
1641  *target_obj = obj;
1642  else
1643  *target_obj = NULL;
1644  }
1645  return o;
1646  }
1647  }
1648  return NULL;
1649 }
1650 
1651 void *av_opt_child_next(void *obj, void *prev)
1652 {
1653  const AVClass *c = *(AVClass **)obj;
1654  if (c->child_next)
1655  return c->child_next(obj, prev);
1656  return NULL;
1657 }
1658 
1659 const AVClass *av_opt_child_class_next(const AVClass *parent, const AVClass *prev)
1660 {
1661  if (parent->child_class_next)
1662  return parent->child_class_next(prev);
1663  return NULL;
1664 }
1665 
1666 void *av_opt_ptr(const AVClass *class, void *obj, const char *name)
1667 {
1668  const AVOption *opt= av_opt_find2(&class, name, NULL, 0, AV_OPT_SEARCH_FAKE_OBJ, NULL);
1669  if(!opt)
1670  return NULL;
1671  return (uint8_t*)obj + opt->offset;
1672 }
1673 
1674 static int opt_size(enum AVOptionType type)
1675 {
1676  switch(type) {
1677  case AV_OPT_TYPE_BOOL:
1678  case AV_OPT_TYPE_INT:
1679  case AV_OPT_TYPE_FLAGS:
1680  return sizeof(int);
1681  case AV_OPT_TYPE_DURATION:
1683  case AV_OPT_TYPE_INT64:
1684  case AV_OPT_TYPE_UINT64:
1685  return sizeof(int64_t);
1686  case AV_OPT_TYPE_DOUBLE:
1687  return sizeof(double);
1688  case AV_OPT_TYPE_FLOAT:
1689  return sizeof(float);
1690  case AV_OPT_TYPE_STRING:
1691  return sizeof(uint8_t*);
1693  case AV_OPT_TYPE_RATIONAL:
1694  return sizeof(AVRational);
1695  case AV_OPT_TYPE_BINARY:
1696  return sizeof(uint8_t*) + sizeof(int);
1698  return sizeof(int[2]);
1699  case AV_OPT_TYPE_PIXEL_FMT:
1700  return sizeof(enum AVPixelFormat);
1702  return sizeof(enum AVSampleFormat);
1703  case AV_OPT_TYPE_COLOR:
1704  return 4;
1705  }
1706  return AVERROR(EINVAL);
1707 }
1708 
1709 int av_opt_copy(void *dst, const void *src)
1710 {
1711  const AVOption *o = NULL;
1712  const AVClass *c;
1713  int ret = 0;
1714 
1715  if (!src)
1716  return AVERROR(EINVAL);
1717 
1718  c = *(AVClass **)src;
1719  if (!c || c != *(AVClass **)dst)
1720  return AVERROR(EINVAL);
1721 
1722  while ((o = av_opt_next(src, o))) {
1723  void *field_dst = (uint8_t *)dst + o->offset;
1724  void *field_src = (uint8_t *)src + o->offset;
1725  uint8_t **field_dst8 = (uint8_t **)field_dst;
1726  uint8_t **field_src8 = (uint8_t **)field_src;
1727 
1728  if (o->type == AV_OPT_TYPE_STRING) {
1729  if (*field_dst8 != *field_src8)
1730  av_freep(field_dst8);
1731  *field_dst8 = av_strdup(*field_src8);
1732  if (*field_src8 && !*field_dst8)
1733  ret = AVERROR(ENOMEM);
1734  } else if (o->type == AV_OPT_TYPE_BINARY) {
1735  int len = *(int *)(field_src8 + 1);
1736  if (*field_dst8 != *field_src8)
1737  av_freep(field_dst8);
1738  *field_dst8 = av_memdup(*field_src8, len);
1739  if (len && !*field_dst8) {
1740  ret = AVERROR(ENOMEM);
1741  len = 0;
1742  }
1743  *(int *)(field_dst8 + 1) = len;
1744  } else if (o->type == AV_OPT_TYPE_CONST) {
1745  // do nothing
1746  } else if (o->type == AV_OPT_TYPE_DICT) {
1747  AVDictionary **sdict = (AVDictionary **) field_src;
1748  AVDictionary **ddict = (AVDictionary **) field_dst;
1749  if (*sdict != *ddict)
1750  av_dict_free(ddict);
1751  *ddict = NULL;
1752  av_dict_copy(ddict, *sdict, 0);
1753  if (av_dict_count(*sdict) != av_dict_count(*ddict))
1754  ret = AVERROR(ENOMEM);
1755  } else {
1756  int size = opt_size(o->type);
1757  if (size < 0)
1758  ret = size;
1759  else
1760  memcpy(field_dst, field_src, size);
1761  }
1762  }
1763  return ret;
1764 }
1765 
1766 int av_opt_query_ranges(AVOptionRanges **ranges_arg, void *obj, const char *key, int flags)
1767 {
1768  int ret;
1769  const AVClass *c = *(AVClass**)obj;
1770  int (*callback)(AVOptionRanges **, void *obj, const char *key, int flags) = NULL;
1771 
1772  if (c->version > (52 << 16 | 11 << 8))
1773  callback = c->query_ranges;
1774 
1775  if (!callback)
1777 
1778  ret = callback(ranges_arg, obj, key, flags);
1779  if (ret >= 0) {
1780  if (!(flags & AV_OPT_MULTI_COMPONENT_RANGE))
1781  ret = 1;
1782  (*ranges_arg)->nb_components = ret;
1783  }
1784  return ret;
1785 }
1786 
1787 int av_opt_query_ranges_default(AVOptionRanges **ranges_arg, void *obj, const char *key, int flags)
1788 {
1789  AVOptionRanges *ranges = av_mallocz(sizeof(*ranges));
1790  AVOptionRange **range_array = av_mallocz(sizeof(void*));
1791  AVOptionRange *range = av_mallocz(sizeof(*range));
1792  const AVOption *field = av_opt_find(obj, key, NULL, 0, flags);
1793  int ret;
1794 
1795  *ranges_arg = NULL;
1796 
1797  if (!ranges || !range || !range_array || !field) {
1798  ret = AVERROR(ENOMEM);
1799  goto fail;
1800  }
1801 
1802  ranges->range = range_array;
1803  ranges->range[0] = range;
1804  ranges->nb_ranges = 1;
1805  ranges->nb_components = 1;
1806  range->is_range = 1;
1807  range->value_min = field->min;
1808  range->value_max = field->max;
1809 
1810  switch (field->type) {
1811  case AV_OPT_TYPE_BOOL:
1812  case AV_OPT_TYPE_INT:
1813  case AV_OPT_TYPE_INT64:
1814  case AV_OPT_TYPE_UINT64:
1815  case AV_OPT_TYPE_PIXEL_FMT:
1817  case AV_OPT_TYPE_FLOAT:
1818  case AV_OPT_TYPE_DOUBLE:
1819  case AV_OPT_TYPE_DURATION:
1820  case AV_OPT_TYPE_COLOR:
1822  break;
1823  case AV_OPT_TYPE_STRING:
1824  range->component_min = 0;
1825  range->component_max = 0x10FFFF; // max unicode value
1826  range->value_min = -1;
1827  range->value_max = INT_MAX;
1828  break;
1829  case AV_OPT_TYPE_RATIONAL:
1830  range->component_min = INT_MIN;
1831  range->component_max = INT_MAX;
1832  break;
1834  range->component_min = 0;
1835  range->component_max = INT_MAX/128/8;
1836  range->value_min = 0;
1837  range->value_max = INT_MAX/8;
1838  break;
1840  range->component_min = 1;
1841  range->component_max = INT_MAX;
1842  range->value_min = 1;
1843  range->value_max = INT_MAX;
1844  break;
1845  default:
1846  ret = AVERROR(ENOSYS);
1847  goto fail;
1848  }
1849 
1850  *ranges_arg = ranges;
1851  return 1;
1852 fail:
1853  av_free(ranges);
1854  av_free(range);
1855  av_free(range_array);
1856  return ret;
1857 }
1858 
1860 {
1861  int i;
1862  AVOptionRanges *ranges = *rangesp;
1863 
1864  if (!ranges)
1865  return;
1866 
1867  for (i = 0; i < ranges->nb_ranges * ranges->nb_components; i++) {
1868  AVOptionRange *range = ranges->range[i];
1869  if (range) {
1870  av_freep(&range->str);
1871  av_freep(&ranges->range[i]);
1872  }
1873  }
1874  av_freep(&ranges->range);
1875  av_freep(rangesp);
1876 }
1877 
1878 int av_opt_is_set_to_default(void *obj, const AVOption *o)
1879 {
1880  int64_t i64;
1881  double d, d2;
1882  float f;
1883  AVRational q;
1884  int ret, w, h;
1885  char *str;
1886  void *dst;
1887 
1888  if (!o || !obj)
1889  return AVERROR(EINVAL);
1890 
1891  dst = ((uint8_t*)obj) + o->offset;
1892 
1893  switch (o->type) {
1894  case AV_OPT_TYPE_CONST:
1895  return 1;
1896  case AV_OPT_TYPE_BOOL:
1897  case AV_OPT_TYPE_FLAGS:
1898  case AV_OPT_TYPE_PIXEL_FMT:
1900  case AV_OPT_TYPE_INT:
1902  case AV_OPT_TYPE_DURATION:
1903  case AV_OPT_TYPE_INT64:
1904  case AV_OPT_TYPE_UINT64:
1905  read_number(o, dst, NULL, NULL, &i64);
1906  return o->default_val.i64 == i64;
1907  case AV_OPT_TYPE_STRING:
1908  str = *(char **)dst;
1909  if (str == o->default_val.str) //2 NULLs
1910  return 1;
1911  if (!str || !o->default_val.str) //1 NULL
1912  return 0;
1913  return !strcmp(str, o->default_val.str);
1914  case AV_OPT_TYPE_DOUBLE:
1915  read_number(o, dst, &d, NULL, NULL);
1916  return o->default_val.dbl == d;
1917  case AV_OPT_TYPE_FLOAT:
1918  read_number(o, dst, &d, NULL, NULL);
1919  f = o->default_val.dbl;
1920  d2 = f;
1921  return d2 == d;
1922  case AV_OPT_TYPE_RATIONAL:
1923  q = av_d2q(o->default_val.dbl, INT_MAX);
1924  return !av_cmp_q(*(AVRational*)dst, q);
1925  case AV_OPT_TYPE_BINARY: {
1926  struct {
1927  uint8_t *data;
1928  int size;
1929  } tmp = {0};
1930  int opt_size = *(int *)((void **)dst + 1);
1931  void *opt_ptr = *(void **)dst;
1932  if (!opt_size && (!o->default_val.str || !strlen(o->default_val.str)))
1933  return 1;
1934  if (!opt_size || !o->default_val.str || !strlen(o->default_val.str ))
1935  return 0;
1936  if (opt_size != strlen(o->default_val.str) / 2)
1937  return 0;
1938  ret = set_string_binary(NULL, NULL, o->default_val.str, &tmp.data);
1939  if (!ret)
1940  ret = !memcmp(opt_ptr, tmp.data, tmp.size);
1941  av_free(tmp.data);
1942  return ret;
1943  }
1944  case AV_OPT_TYPE_DICT:
1945  /* Binary and dict have not default support yet. Any pointer is not default. */
1946  return !!(*(void **)dst);
1948  if (!o->default_val.str || !strcmp(o->default_val.str, "none"))
1949  w = h = 0;
1950  else if ((ret = av_parse_video_size(&w, &h, o->default_val.str)) < 0)
1951  return ret;
1952  return (w == *(int *)dst) && (h == *((int *)dst+1));
1954  q = (AVRational){0, 0};
1955  if (o->default_val.str) {
1956  if ((ret = av_parse_video_rate(&q, o->default_val.str)) < 0)
1957  return ret;
1958  }
1959  return !av_cmp_q(*(AVRational*)dst, q);
1960  case AV_OPT_TYPE_COLOR: {
1961  uint8_t color[4] = {0, 0, 0, 0};
1962  if (o->default_val.str) {
1963  if ((ret = av_parse_color(color, o->default_val.str, -1, NULL)) < 0)
1964  return ret;
1965  }
1966  return !memcmp(color, dst, sizeof(color));
1967  }
1968  default:
1969  av_log(obj, AV_LOG_WARNING, "Not supported option type: %d, option name: %s\n", o->type, o->name);
1970  break;
1971  }
1972  return AVERROR_PATCHWELCOME;
1973 }
1974 
1975 int av_opt_is_set_to_default_by_name(void *obj, const char *name, int search_flags)
1976 {
1977  const AVOption *o;
1978  void *target;
1979  if (!obj)
1980  return AVERROR(EINVAL);
1981  o = av_opt_find2(obj, name, NULL, 0, search_flags, &target);
1982  if (!o)
1983  return AVERROR_OPTION_NOT_FOUND;
1984  return av_opt_is_set_to_default(target, o);
1985 }
1986 
1987 int av_opt_serialize(void *obj, int opt_flags, int flags, char **buffer,
1988  const char key_val_sep, const char pairs_sep)
1989 {
1990  const AVOption *o = NULL;
1991  uint8_t *buf;
1992  AVBPrint bprint;
1993  int ret, cnt = 0;
1994  const char special_chars[] = {pairs_sep, key_val_sep, '\0'};
1995 
1996  if (pairs_sep == '\0' || key_val_sep == '\0' || pairs_sep == key_val_sep ||
1997  pairs_sep == '\\' || key_val_sep == '\\') {
1998  av_log(obj, AV_LOG_ERROR, "Invalid separator(s) found.");
1999  return AVERROR(EINVAL);
2000  }
2001 
2002  if (!obj || !buffer)
2003  return AVERROR(EINVAL);
2004 
2005  *buffer = NULL;
2007 
2008  while (o = av_opt_next(obj, o)) {
2009  if (o->type == AV_OPT_TYPE_CONST)
2010  continue;
2011  if ((flags & AV_OPT_SERIALIZE_OPT_FLAGS_EXACT) && o->flags != opt_flags)
2012  continue;
2013  else if (((o->flags & opt_flags) != opt_flags))
2014  continue;
2015  if (flags & AV_OPT_SERIALIZE_SKIP_DEFAULTS && av_opt_is_set_to_default(obj, o) > 0)
2016  continue;
2017  if ((ret = av_opt_get(obj, o->name, 0, &buf)) < 0) {
2018  av_bprint_finalize(&bprint, NULL);
2019  return ret;
2020  }
2021  if (buf) {
2022  if (cnt++)
2023  av_bprint_append_data(&bprint, &pairs_sep, 1);
2024  av_bprint_escape(&bprint, o->name, special_chars, AV_ESCAPE_MODE_BACKSLASH, 0);
2025  av_bprint_append_data(&bprint, &key_val_sep, 1);
2026  av_bprint_escape(&bprint, buf, special_chars, AV_ESCAPE_MODE_BACKSLASH, 0);
2027  av_freep(&buf);
2028  }
2029  }
2030  av_bprint_finalize(&bprint, buffer);
2031  return 0;
2032 }
int av_opt_get_dict_val(void *obj, const char *name, int search_flags, AVDictionary **out_val)
Definition: opt.c:1000
#define NULL
Definition: coverity.c:32
static const char * get_bool_name(int val)
Definition: opt.c:359
const char const char void * val
Definition: avisynth_c.h:771
A single allowed range of values, or a single allowed value.
Definition: opt.h:306
Number of sample formats. DO NOT USE if linking dynamically.
Definition: samplefmt.h:74
static char * get_opt_flags_string(void *obj, const char *unit, int64_t value)
Definition: opt.c:1076
#define flag(name)
Definition: cbs_h2645.c:255
int av_parse_video_rate(AVRational *rate, const char *arg)
Parse str and store the detected values in *rate.
Definition: parseutils.c:179
AVOption.
Definition: opt.h:246
ptrdiff_t const GLvoid * data
Definition: opengl_enc.c:101
int av_opt_set_q(void *obj, const char *name, AVRational val, int search_flags)
Definition: opt.c:571
int av_parse_video_size(int *width_ptr, int *height_ptr, const char *str)
Parse str and put in width_ptr and height_ptr the detected values.
Definition: parseutils.c:148
#define AV_OPT_FLAG_EXPORT
The option is intended for exporting values to the caller.
Definition: opt.h:284
#define AV_OPT_FLAG_SUBTITLE_PARAM
Definition: opt.h:280
#define AV_OPT_FLAG_DEPRECATED
set if option is deprecated, users should refer to AVOption.help text for more information ...
Definition: opt.h:292
const char * fmt
Definition: avisynth_c.h:769
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:182
static int set_string_image_size(void *obj, const AVOption *o, const char *val, int *dst)
Definition: opt.c:316
void * av_opt_child_next(void *obj, void *prev)
Iterate over AVOptions-enabled children of obj.
Definition: opt.c:1651
int av_parse_time(int64_t *timeval, const char *timestr, int duration)
Parse timestr and return in *time a corresponding number of microseconds.
Definition: parseutils.c:587
const char * desc
Definition: nvenc.c:65
static int get_key(const char **ropts, const char *delim, char **rkey)
Read a key from a string.
Definition: opt.c:1456
double value_max
Definition: opt.h:313
const AVClass * av_opt_child_class_next(const AVClass *parent, const AVClass *prev)
Iterate over potential AVOptions-enabled children of parent.
Definition: opt.c:1659
void av_opt_set_defaults(void *s)
Set the values of all AVOption fields to their default values.
Definition: opt.c:1298
static int opt_size(enum AVOptionType type)
Definition: opt.c:1674
int num
Numerator.
Definition: rational.h:59
#define AV_OPT_FLAG_AUDIO_PARAM
Definition: opt.h:278
int av_dict_count(const AVDictionary *m)
Get number of entries in dictionary.
Definition: dict.c:35
const char * b
Definition: vf_curves.c:113
int av_set_options_string(void *ctx, const char *opts, const char *key_val_sep, const char *pairs_sep)
Parse the key/value pairs list in opts.
Definition: opt.c:1419
static int set_string_sample_fmt(void *obj, const AVOption *o, const char *val, uint8_t *dst)
Definition: opt.c:443
Convenience header that includes libavutil's core.
int av_dict_copy(AVDictionary **dst, const AVDictionary *src, int flags)
Copy entries from one AVDictionary struct into another.
Definition: dict.c:217
int av_opt_set_bin(void *obj, const char *name, const uint8_t *val, int len, int search_flags)
Definition: opt.c:576
Use backslash escaping.
Definition: avstring.h:315
const char * key
void * av_mallocz(size_t size)
Allocate a memory block with alignment suitable for all memory accesses (including vectors if availab...
Definition: mem.c:236
int av_opt_get_q(void *obj, const char *name, int search_flags, AVRational *out_val)
Definition: opt.c:905
int av_opt_serialize(void *obj, int opt_flags, int flags, char **buffer, const char key_val_sep, const char pairs_sep)
Serialize object's options.
Definition: opt.c:1987
static void opt_list(void *obj, void *av_log_obj, const char *unit, int req_flags, int rej_flags)
Definition: opt.c:1097
int av_opt_set_dict_val(void *obj, const char *name, const AVDictionary *val, int search_flags)
Definition: opt.c:700
#define src
Definition: vp8dsp.c:254
AVOptionType
Definition: opt.h:221
int av_opt_is_set_to_default_by_name(void *obj, const char *name, int search_flags)
Check if given option is set to its default value.
Definition: opt.c:1975
int av_bprint_finalize(AVBPrint *buf, char **ret_str)
Finalize a print buffer.
Definition: bprint.c:235
int av_opt_is_set_to_default(void *obj, const AVOption *o)
Check if given option is set to its default value.
Definition: opt.c:1878
int av_opt_get_video_rate(void *obj, const char *name, int search_flags, AVRational *out_val)
Definition: opt.c:939
int av_opt_set_from_string(void *ctx, const char *opts, const char *const *shorthand, const char *key_val_sep, const char *pairs_sep)
Parse the key-value pairs list in opts.
Definition: opt.c:1499
uint64_t av_get_channel_layout(const char *name)
Return a channel layout id that matches name, or 0 if no match is found.
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Definition: avassert.h:37
static int get_format(void *obj, const char *name, int search_flags, int *out_fmt, enum AVOptionType type, const char *desc)
Definition: opt.c:955
Public dictionary API.
const char * name
Definition: opt.h:247
#define WHITESPACES
Definition: opt.c:1439
uint8_t
AVOptionRange ** range
Array of option ranges.
Definition: opt.h:360
#define av_malloc(s)
class_name
Definition: libkvazaar.c:280
const char * help
short English help text
Definition: opt.h:253
AVOptions.
#define f(width, name)
Definition: cbs_vp9.c:255
AVS_FilterInfo AVS_Value child
Definition: avisynth_c.h:731
static int read_number(const AVOption *o, const void *dst, double *num, int *den, int64_t *intnum)
Definition: opt.c:58
static av_cold int end(AVCodecContext *avctx)
Definition: avrndec.c:90
static const char * get_opt_const_name(void *obj, const char *unit, int64_t value)
Definition: opt.c:1063
const char * str
Definition: opt.h:268
int av_opt_set_double(void *obj, const char *name, double val, int search_flags)
Definition: opt.c:566
void av_bprint_append_data(AVBPrint *buf, const char *data, unsigned size)
Append data to a print buffer.
Definition: bprint.c:158
AVDictionaryEntry * av_dict_get(const AVDictionary *m, const char *key, const AVDictionaryEntry *prev, int flags)
Get a dictionary entry with matching key.
Definition: dict.c:40
double component_max
Definition: opt.h:318
union AVOption::@274 default_val
the default value for scalar options
ptrdiff_t size
Definition: opengl_enc.c:101
#define flags(name, subs,...)
Definition: cbs_h2645.c:263
#define av_log(a,...)
static int get_number(void *obj, const char *name, const AVOption **o_out, double *num, int *den, int64_t *intnum, int search_flags)
Definition: opt.c:861
int av_opt_set_video_rate(void *obj, const char *name, AVRational val, int search_flags)
Definition: opt.c:628
#define AV_OPT_FLAG_ENCODING_PARAM
a generic parameter which can be set by the user for muxing or encoding
Definition: opt.h:276
int av_parse_color(uint8_t *rgba_color, const char *color_string, int slen, void *log_ctx)
Put the RGBA values that correspond to color_string in rgba_color.
Definition: parseutils.c:354
static const double const_values[]
Definition: eval.c:28
static void * av_x_if_null(const void *p, const void *x)
Return x default pointer in case p is NULL.
Definition: avutil.h:308
static int set_string_pixel_fmt(void *obj, const AVOption *o, const char *val, uint8_t *dst)
Definition: opt.c:437
static int hexchar2int(char c)
Definition: opt.c:170
int av_opt_get_pixel_fmt(void *obj, const char *name, int search_flags, enum AVPixelFormat *out_fmt)
Definition: opt.c:973
int av_expr_parse_and_eval(double *d, const char *s, const char *const *const_names, const double *const_values, const char *const *func1_names, double(*const *funcs1)(void *, double), const char *const *func2_names, double(*const *funcs2)(void *, double, double), void *opaque, int log_offset, void *log_ctx)
Parse and evaluate an expression.
Definition: eval.c:744
int av_opt_set_pixel_fmt(void *obj, const char *name, enum AVPixelFormat fmt, int search_flags)
Definition: opt.c:674
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:176
#define AV_BPRINT_SIZE_UNLIMITED
void * av_opt_ptr(const AVClass *class, void *obj, const char *name)
Gets a pointer to the requested field in a struct.
Definition: opt.c:1666
static const uint16_t mask[17]
Definition: lzw.c:38
#define AV_OPT_FLAG_FILTERING_PARAM
a generic parameter which can be set by the user for filtering
Definition: opt.h:291
double max
maximum valid value for the option
Definition: opt.h:273
#define AVERROR(e)
Definition: error.h:43
void av_bprint_init(AVBPrint *buf, unsigned size_init, unsigned size_max)
Definition: bprint.c:69
const char * r
Definition: vf_curves.c:111
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: log.h:197
void av_dict_free(AVDictionary **pm)
Free all the memory allocated for an AVDictionary struct and all keys and values. ...
Definition: dict.c:203
int av_opt_set_int(void *obj, const char *name, int64_t val, int search_flags)
Definition: opt.c:561
simple assert() macros that are a bit more flexible than ISO C assert().
const AVOption * av_opt_next(const void *obj, const AVOption *last)
Iterate over all AVOptions belonging to obj.
Definition: opt.c:45
Accept to parse a value without a key; the key will then be returned as NULL.
Definition: opt.h:529
int av_match_name(const char *name, const char *names)
Match instances of a name in a comma-separated list of names.
Definition: avstring.c:343
const char * av_get_sample_fmt_name(enum AVSampleFormat sample_fmt)
Return the name of sample_fmt, or NULL if sample_fmt is not recognized.
Definition: samplefmt.c:49
GLsizei count
Definition: opengl_enc.c:109
void * av_memdup(const void *p, size_t size)
Duplicate a buffer with av_malloc().
Definition: mem.c:283
#define FFMAX(a, b)
Definition: common.h:94
#define fail()
Definition: checkasm.h:117
char * av_get_token(const char **buf, const char *term)
Unescape the given string until a non escaped terminating char, and return the token corresponding to...
Definition: avstring.c:149
const AVOption * av_opt_find(void *obj, const char *name, const char *unit, int opt_flags, int search_flags)
Look for an option in an object.
Definition: opt.c:1601
static int set_string(void *obj, const AVOption *o, const char *val, uint8_t **dst)
Definition: opt.c:214
AVDictionary * opts
Definition: movenc.c:50
int av_opt_get_sample_fmt(void *obj, const char *name, int search_flags, enum AVSampleFormat *out_fmt)
Definition: opt.c:978
static void callback(void *priv_data, int index, uint8_t *buf, int buf_size, int64_t time, enum dshowDeviceType devtype)
Definition: dshow.c:161
audio channel layout utility functions
const char * str
Definition: opt.h:307
#define NAN
Definition: mathematics.h:64
#define FFMIN(a, b)
Definition: common.h:96
#define AV_OPT_SEARCH_CHILDREN
Search in possible children of the given object first.
Definition: opt.h:556
uint8_t w
Definition: llviddspenc.c:38
const char * class
Definition: pixdesc_query.c:27
GLsizei GLboolean const GLfloat * value
Definition: opengl_enc.c:109
#define av_err2str(errnum)
Convenience macro, the return value should be used only directly in function arguments but never stan...
Definition: error.h:119
AVFormatContext * ctx
Definition: movenc.c:48
const char * unit
The logical unit to which the option belongs.
Definition: opt.h:300
static int parse_key_value_pair(void *ctx, const char **buf, const char *key_val_sep, const char *pairs_sep)
Store the value in the field in ctx that is named like key.
Definition: opt.c:1385
double component_min
Value's component range.
Definition: opt.h:318
int av_opt_set_channel_layout(void *obj, const char *name, int64_t cl, int search_flags)
Definition: opt.c:684
double min
minimum valid value for the option
Definition: opt.h:272
#define s(width, name)
Definition: cbs_vp9.c:257
static int set_string_number(void *obj, void *target_obj, const AVOption *o, const char *val, void *dst)
Definition: opt.c:229
void av_opt_set_defaults2(void *s, int mask, int flags)
Set the values of all AVOption fields to their default values.
Definition: opt.c:1303
#define AV_OPT_FLAG_BSF_PARAM
a generic parameter which can be set by the user for bit stream filtering
Definition: opt.h:290
static int set_string_binary(void *obj, const AVOption *o, const char *val, uint8_t **dst)
Definition: opt.c:180
int n
Definition: avisynth_c.h:684
int av_opt_set_dict2(void *obj, AVDictionary **options, int search_flags)
Set all the options from a given dictionary on an object.
Definition: opt.c:1571
static void error(const char *err)
const struct AVClass *(* child_class_next)(const struct AVClass *prev)
Return an AVClass corresponding to the next potential AVOptions-enabled child.
Definition: log.h:123
#define FF_ARRAY_ELEMS(a)
offset must point to a pointer immediately followed by an int for the length
Definition: opt.h:229
int flags
Definition: opt.h:275
int av_opt_query_ranges_default(AVOptionRanges **ranges_arg, void *obj, const char *key, int flags)
Get a default list of allowed ranges for the given option.
Definition: opt.c:1787
#define AVERROR_PATCHWELCOME
Not yet implemented in FFmpeg, patches welcome.
Definition: error.h:62
int is_range
Range flag.
Definition: opt.h:323
int av_opt_get_int(void *obj, const char *name, int search_flags, int64_t *out_val)
Definition: opt.c:881
static void log_value(void *av_log_obj, int level, double d)
Definition: opt.c:1030
#define AV_LOG_INFO
Standard information.
Definition: log.h:187
static int set_format(void *obj, const char *name, int fmt, int search_flags, enum AVOptionType type, const char *desc, int nb_fmts)
Definition: opt.c:645
void av_opt_freep_ranges(AVOptionRanges **rangesp)
Free an AVOptionRanges struct and set it to NULL.
Definition: opt.c:1859
char * av_strdup(const char *s)
Duplicate a string.
Definition: mem.c:251
int offset
The offset relative to the context structure where the option value is stored.
Definition: opt.h:259
AVSampleFormat
Audio sample formats.
Definition: samplefmt.h:58
int av_opt_set_dict(void *obj, AVDictionary **options)
Set all the options from a given dictionary on an object.
Definition: opt.c:1596
static int set_number(void *obj, const char *name, double num, int den, int64_t intnum, int search_flags)
Definition: opt.c:545
int av_opt_show2(void *obj, void *av_log_obj, int req_flags, int rej_flags)
Show the obj options.
Definition: opt.c:1286
#define AV_OPT_FLAG_VIDEO_PARAM
Definition: opt.h:279
static void format_duration(char *buf, size_t size, int64_t d)
Definition: opt.c:719
static int set_string_bool(void *obj, const AVOption *o, const char *val, int *dst)
Definition: opt.c:366
#define OPT_EVAL_NUMBER(name, opttype, vartype)
Definition: opt.c:529
void * buf
Definition: avisynth_c.h:690
GLint GLenum type
Definition: opengl_enc.c:105
int av_opt_get_channel_layout(void *obj, const char *name, int search_flags, int64_t *cl)
Definition: opt.c:983
#define llrint(x)
Definition: libm.h:394
int av_dict_set(AVDictionary **pm, const char *key, const char *value, int flags)
Set the given entry in *pm, overwriting an existing entry.
Definition: dict.c:70
Describe the class of an AVClass context structure.
Definition: log.h:67
Rational number (pair of numerator and denominator).
Definition: rational.h:58
#define AV_OPT_FLAG_DECODING_PARAM
a generic parameter which can be set by the user for demuxing or decoding
Definition: opt.h:277
#define AV_OPT_ALLOW_NULL
In av_opt_get, return NULL if the option has a pointer type and is set to NULL, rather than returning...
Definition: opt.h:571
double dbl
Definition: opt.h:267
enum AVSampleFormat av_get_sample_fmt(const char *name)
Return a sample format corresponding to name, or AV_SAMPLE_FMT_NONE on error.
Definition: samplefmt.c:56
offset must point to AVRational
Definition: opt.h:236
size_t av_strlcatf(char *dst, size_t size, const char *fmt,...)
Definition: avstring.c:101
#define snprintf
Definition: snprintf.h:34
offset must point to two consecutive integers
Definition: opt.h:233
misc parsing utilities
uint8_t level
Definition: svq3.c:207
AVRational av_d2q(double d, int max)
Convert a double precision floating point number to a rational.
Definition: rational.c:106
int version
LIBAVUTIL_VERSION with which this structure was created.
Definition: log.h:93
static int av_cmp_q(AVRational a, AVRational b)
Compare two rationals.
Definition: rational.h:89
int
static int set_string_video_rate(void *obj, const AVOption *o, const char *val, AVRational *dst)
Definition: opt.c:331
void av_bprint_escape(AVBPrint *dstbuf, const char *src, const char *special_chars, enum AVEscapeMode mode, int flags)
Escape the content in src and append it to dstbuf.
Definition: bprint.c:265
void av_opt_free(void *obj)
Free all allocated objects in obj.
Definition: opt.c:1551
const OptionDef options[]
Definition: ffmpeg_opt.c:3308
int av_opt_query_ranges(AVOptionRanges **ranges_arg, void *obj, const char *key, int flags)
Get a list of allowed ranges for the given option.
Definition: opt.c:1766
double value_min
Value range.
Definition: opt.h:313
common internal and external API header
if(ret< 0)
Definition: vf_mcdeint.c:279
#define DEFAULT_NUMVAL(opt)
Definition: opt.c:221
int(* query_ranges)(struct AVOptionRanges **, void *obj, const char *key, int flags)
Callback to return the supported/allowed ranges.
Definition: log.h:142
int av_opt_get_double(void *obj, const char *name, int search_flags, double *out_val)
Definition: opt.c:893
static double c[64]
static int set_string_fmt(void *obj, const AVOption *o, const char *val, uint8_t *dst, int fmt_nb, int((*get_fmt)(const char *)), const char *desc)
Definition: opt.c:397
int av_opt_copy(void *dst, const void *src)
Copy options from src object into dest object.
Definition: opt.c:1709
void *(* child_next)(void *obj, void *prev)
Return next AVOptions-enabled child or NULL.
Definition: log.h:113
#define AV_OPT_SEARCH_FAKE_OBJ
The obj passed to av_opt_find() is fake – only a double pointer to AVClass instead of a required poin...
Definition: opt.h:565
static int write_number(void *obj, const AVOption *o, void *dst, double num, int den, int64_t intnum)
Definition: opt.c:97
char * key
Definition: dict.h:86
int den
Denominator.
Definition: rational.h:60
int nb_ranges
Number of ranges per component.
Definition: opt.h:364
List of AVOptionRange structs.
Definition: opt.h:329
int av_opt_get(void *obj, const char *name, int search_flags, uint8_t **out_val)
Definition: opt.c:754
#define av_free(p)
#define AV_OPT_SERIALIZE_SKIP_DEFAULTS
Serialize options that are not set to default values only.
Definition: opt.h:839
#define AVERROR_OPTION_NOT_FOUND
Option not found.
Definition: error.h:61
char * value
Definition: dict.h:87
enum AVOptionType type
Definition: opt.h:260
int len
int av_opt_get_key_value(const char **ropts, const char *key_val_sep, const char *pairs_sep, unsigned flags, char **rkey, char **rval)
Extract a key-value pair from the beginning of a string.
Definition: opt.c:1477
int64_t i64
Definition: opt.h:266
#define AV_OPT_FLAG_READONLY
The option may not be set through the AVOptions API, only read.
Definition: opt.h:289
int av_opt_flag_is_set(void *obj, const char *field_name, const char *flag_name)
Check whether a particular flag is set in a flags field.
Definition: opt.c:1017
#define av_uninit(x)
Definition: attributes.h:148
number of pixel formats, DO NOT USE THIS if you want to link with shared libav* because the number of...
Definition: pixfmt.h:343
#define av_freep(p)
static int set_string_color(void *obj, const AVOption *o, const char *val, uint8_t *dst)
Definition: opt.c:344
#define AV_DICT_IGNORE_SUFFIX
Return first entry in a dictionary whose first part corresponds to the search key, ignoring the suffix of the found key string.
Definition: dict.h:70
#define AV_OPT_SERIALIZE_OPT_FLAGS_EXACT
Serialize options that exactly match opt_flags only.
Definition: opt.h:840
const AVOption * av_opt_find2(void *obj, const char *name, const char *unit, int opt_flags, int search_flags, void **target_obj)
Look for an option in an object.
Definition: opt.c:1607
static const char *const const_names[]
Definition: eval.c:34
enum AVPixelFormat av_get_pix_fmt(const char *name)
Return the pixel format corresponding to name.
Definition: pixdesc.c:2334
const char * av_get_pix_fmt_name(enum AVPixelFormat pix_fmt)
Return the short name for a pixel format, NULL in case pix_fmt is unknown.
Definition: pixdesc.c:2322
#define INFINITY
Definition: mathematics.h:67
int av_opt_set_sample_fmt(void *obj, const char *name, enum AVSampleFormat fmt, int search_flags)
Definition: opt.c:679
#define AV_OPT_MULTI_COMPONENT_RANGE
Allows av_opt_query_ranges and av_opt_query_ranges_default to return more than one component for cert...
Definition: opt.h:578
float min
AVPixelFormat
Pixel format.
Definition: pixfmt.h:64
int av_opt_set_image_size(void *obj, const char *name, int w, int h, int search_flags)
Definition: opt.c:606
int av_opt_set(void *obj, const char *name, const char *val, int search_flags)
Definition: opt.c:449
static int is_key_char(char c)
Definition: opt.c:1441
GLuint buffer
Definition: opengl_enc.c:102
simple arithmetic expression evaluator
const char * name
Definition: opengl_enc.c:103
int nb_components
Number of componentes.
Definition: opt.h:368
int av_opt_get_image_size(void *obj, const char *name, int search_flags, int *w_out, int *h_out)
Definition: opt.c:921
static uint8_t tmp[11]
Definition: aes_ctr.c:26