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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  dst = ((uint8_t *)target_obj) + o->offset;
467  switch (o->type) {
468  case AV_OPT_TYPE_BOOL:
469  return set_string_bool(obj, o, val, dst);
470  case AV_OPT_TYPE_STRING:
471  return set_string(obj, o, val, dst);
472  case AV_OPT_TYPE_BINARY:
473  return set_string_binary(obj, o, val, dst);
474  case AV_OPT_TYPE_FLAGS:
475  case AV_OPT_TYPE_INT:
476  case AV_OPT_TYPE_INT64:
477  case AV_OPT_TYPE_UINT64:
478  case AV_OPT_TYPE_FLOAT:
479  case AV_OPT_TYPE_DOUBLE:
481  return set_string_number(obj, target_obj, o, val, dst);
483  return set_string_image_size(obj, o, val, dst);
484  case AV_OPT_TYPE_VIDEO_RATE: {
485  AVRational tmp;
486  ret = set_string_video_rate(obj, o, val, &tmp);
487  if (ret < 0)
488  return ret;
489  return write_number(obj, o, dst, 1, tmp.den, tmp.num);
490  }
492  return set_string_pixel_fmt(obj, o, val, dst);
494  return set_string_sample_fmt(obj, o, val, dst);
496  if (!val) {
497  *(int64_t *)dst = 0;
498  return 0;
499  } else {
500  if ((ret = av_parse_time(dst, val, 1)) < 0)
501  av_log(obj, AV_LOG_ERROR, "Unable to parse option value \"%s\" as duration\n", val);
502  return ret;
503  }
504  break;
505  case AV_OPT_TYPE_COLOR:
506  return set_string_color(obj, o, val, dst);
508  if (!val || !strcmp(val, "none")) {
509  *(int64_t *)dst = 0;
510  } else {
511  int64_t cl = av_get_channel_layout(val);
512  if (!cl) {
513  av_log(obj, AV_LOG_ERROR, "Unable to parse option value \"%s\" as channel layout\n", val);
514  ret = AVERROR(EINVAL);
515  }
516  *(int64_t *)dst = cl;
517  return ret;
518  }
519  break;
520  }
521 
522  av_log(obj, AV_LOG_ERROR, "Invalid option type.\n");
523  return AVERROR(EINVAL);
524 }
525 
526 #define OPT_EVAL_NUMBER(name, opttype, vartype) \
527 int av_opt_eval_ ## name(void *obj, const AVOption *o, \
528  const char *val, vartype *name ## _out) \
529 { \
530  if (!o || o->type != opttype || o->flags & AV_OPT_FLAG_READONLY) \
531  return AVERROR(EINVAL); \
532  return set_string_number(obj, obj, o, val, name ## _out); \
533 }
534 
537 OPT_EVAL_NUMBER(int64, AV_OPT_TYPE_INT64, int64_t)
538 OPT_EVAL_NUMBER(float, AV_OPT_TYPE_FLOAT, float)
539 OPT_EVAL_NUMBER(double, AV_OPT_TYPE_DOUBLE, double)
541 
542 static int set_number(void *obj, const char *name, double num, int den, int64_t intnum,
543  int search_flags)
544 {
545  void *dst, *target_obj;
546  const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
547 
548  if (!o || !target_obj)
550 
551  if (o->flags & AV_OPT_FLAG_READONLY)
552  return AVERROR(EINVAL);
553 
554  dst = ((uint8_t *)target_obj) + o->offset;
555  return write_number(obj, o, dst, num, den, intnum);
556 }
557 
558 int av_opt_set_int(void *obj, const char *name, int64_t val, int search_flags)
559 {
560  return set_number(obj, name, 1, 1, val, search_flags);
561 }
562 
563 int av_opt_set_double(void *obj, const char *name, double val, int search_flags)
564 {
565  return set_number(obj, name, val, 1, 1, search_flags);
566 }
567 
568 int av_opt_set_q(void *obj, const char *name, AVRational val, int search_flags)
569 {
570  return set_number(obj, name, val.num, val.den, 1, search_flags);
571 }
572 
573 int av_opt_set_bin(void *obj, const char *name, const uint8_t *val, int len, int search_flags)
574 {
575  void *target_obj;
576  const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
577  uint8_t *ptr;
578  uint8_t **dst;
579  int *lendst;
580 
581  if (!o || !target_obj)
583 
585  return AVERROR(EINVAL);
586 
587  ptr = len ? av_malloc(len) : NULL;
588  if (len && !ptr)
589  return AVERROR(ENOMEM);
590 
591  dst = (uint8_t **)(((uint8_t *)target_obj) + o->offset);
592  lendst = (int *)(dst + 1);
593 
594  av_free(*dst);
595  *dst = ptr;
596  *lendst = len;
597  if (len)
598  memcpy(ptr, val, len);
599 
600  return 0;
601 }
602 
603 int av_opt_set_image_size(void *obj, const char *name, int w, int h, int search_flags)
604 {
605  void *target_obj;
606  const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
607 
608  if (!o || !target_obj)
610  if (o->type != AV_OPT_TYPE_IMAGE_SIZE) {
611  av_log(obj, AV_LOG_ERROR,
612  "The value set by option '%s' is not an image size.\n", o->name);
613  return AVERROR(EINVAL);
614  }
615  if (w<0 || h<0) {
616  av_log(obj, AV_LOG_ERROR,
617  "Invalid negative size value %dx%d for size '%s'\n", w, h, o->name);
618  return AVERROR(EINVAL);
619  }
620  *(int *)(((uint8_t *)target_obj) + o->offset) = w;
621  *(int *)(((uint8_t *)target_obj+sizeof(int)) + o->offset) = h;
622  return 0;
623 }
624 
625 int av_opt_set_video_rate(void *obj, const char *name, AVRational val, int search_flags)
626 {
627  void *target_obj;
628  const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
629 
630  if (!o || !target_obj)
632  if (o->type != AV_OPT_TYPE_VIDEO_RATE) {
633  av_log(obj, AV_LOG_ERROR,
634  "The value set by option '%s' is not a video rate.\n", o->name);
635  return AVERROR(EINVAL);
636  }
637  if (val.num <= 0 || val.den <= 0)
638  return AVERROR(EINVAL);
639  return set_number(obj, name, val.num, val.den, 1, search_flags);
640 }
641 
642 static int set_format(void *obj, const char *name, int fmt, int search_flags,
643  enum AVOptionType type, const char *desc, int nb_fmts)
644 {
645  void *target_obj;
646  const AVOption *o = av_opt_find2(obj, name, NULL, 0,
647  search_flags, &target_obj);
648  int min, max;
649 
650  if (!o || !target_obj)
652  if (o->type != type) {
653  av_log(obj, AV_LOG_ERROR,
654  "The value set by option '%s' is not a %s format", name, desc);
655  return AVERROR(EINVAL);
656  }
657 
658  min = FFMAX(o->min, -1);
659  max = FFMIN(o->max, nb_fmts-1);
660 
661  if (fmt < min || fmt > max) {
662  av_log(obj, AV_LOG_ERROR,
663  "Value %d for parameter '%s' out of %s format range [%d - %d]\n",
664  fmt, name, desc, min, max);
665  return AVERROR(ERANGE);
666  }
667  *(int *)(((uint8_t *)target_obj) + o->offset) = fmt;
668  return 0;
669 }
670 
671 int av_opt_set_pixel_fmt(void *obj, const char *name, enum AVPixelFormat fmt, int search_flags)
672 {
673  return set_format(obj, name, fmt, search_flags, AV_OPT_TYPE_PIXEL_FMT, "pixel", AV_PIX_FMT_NB);
674 }
675 
676 int av_opt_set_sample_fmt(void *obj, const char *name, enum AVSampleFormat fmt, int search_flags)
677 {
678  return set_format(obj, name, fmt, search_flags, AV_OPT_TYPE_SAMPLE_FMT, "sample", AV_SAMPLE_FMT_NB);
679 }
680 
681 int av_opt_set_channel_layout(void *obj, const char *name, int64_t cl, int search_flags)
682 {
683  void *target_obj;
684  const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
685 
686  if (!o || !target_obj)
688  if (o->type != AV_OPT_TYPE_CHANNEL_LAYOUT) {
689  av_log(obj, AV_LOG_ERROR,
690  "The value set by option '%s' is not a channel layout.\n", o->name);
691  return AVERROR(EINVAL);
692  }
693  *(int64_t *)(((uint8_t *)target_obj) + o->offset) = cl;
694  return 0;
695 }
696 
697 int av_opt_set_dict_val(void *obj, const char *name, const AVDictionary *val,
698  int search_flags)
699 {
700  void *target_obj;
701  AVDictionary **dst;
702  const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
703 
704  if (!o || !target_obj)
706  if (o->flags & AV_OPT_FLAG_READONLY)
707  return AVERROR(EINVAL);
708 
709  dst = (AVDictionary **)(((uint8_t *)target_obj) + o->offset);
710  av_dict_free(dst);
711  av_dict_copy(dst, val, 0);
712 
713  return 0;
714 }
715 
716 static void format_duration(char *buf, size_t size, int64_t d)
717 {
718  char *e;
719 
720  av_assert0(size >= 25);
721  if (d < 0 && d != INT64_MIN) {
722  *(buf++) = '-';
723  size--;
724  d = -d;
725  }
726  if (d == INT64_MAX)
727  snprintf(buf, size, "INT64_MAX");
728  else if (d == INT64_MIN)
729  snprintf(buf, size, "INT64_MIN");
730  else if (d > (int64_t)3600*1000000)
731  snprintf(buf, size, "%"PRId64":%02d:%02d.%06d", d / 3600000000,
732  (int)((d / 60000000) % 60),
733  (int)((d / 1000000) % 60),
734  (int)(d % 1000000));
735  else if (d > 60*1000000)
736  snprintf(buf, size, "%d:%02d.%06d",
737  (int)(d / 60000000),
738  (int)((d / 1000000) % 60),
739  (int)(d % 1000000));
740  else
741  snprintf(buf, size, "%d.%06d",
742  (int)(d / 1000000),
743  (int)(d % 1000000));
744  e = buf + strlen(buf);
745  while (e > buf && e[-1] == '0')
746  *(--e) = 0;
747  if (e > buf && e[-1] == '.')
748  *(--e) = 0;
749 }
750 
751 int av_opt_get(void *obj, const char *name, int search_flags, uint8_t **out_val)
752 {
753  void *dst, *target_obj;
754  const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
755  uint8_t *bin, buf[128];
756  int len, i, ret;
757  int64_t i64;
758 
759  if (!o || !target_obj || (o->offset<=0 && o->type != AV_OPT_TYPE_CONST))
761 
762  dst = (uint8_t *)target_obj + o->offset;
763 
764  buf[0] = 0;
765  switch (o->type) {
766  case AV_OPT_TYPE_BOOL:
767  ret = snprintf(buf, sizeof(buf), "%s", (char *)av_x_if_null(get_bool_name(*(int *)dst), "invalid"));
768  break;
769  case AV_OPT_TYPE_FLAGS:
770  ret = snprintf(buf, sizeof(buf), "0x%08X", *(int *)dst);
771  break;
772  case AV_OPT_TYPE_INT:
773  ret = snprintf(buf, sizeof(buf), "%d", *(int *)dst);
774  break;
775  case AV_OPT_TYPE_INT64:
776  ret = snprintf(buf, sizeof(buf), "%"PRId64, *(int64_t *)dst);
777  break;
778  case AV_OPT_TYPE_UINT64:
779  ret = snprintf(buf, sizeof(buf), "%"PRIu64, *(uint64_t *)dst);
780  break;
781  case AV_OPT_TYPE_FLOAT:
782  ret = snprintf(buf, sizeof(buf), "%f", *(float *)dst);
783  break;
784  case AV_OPT_TYPE_DOUBLE:
785  ret = snprintf(buf, sizeof(buf), "%f", *(double *)dst);
786  break;
789  ret = snprintf(buf, sizeof(buf), "%d/%d", ((AVRational *)dst)->num, ((AVRational *)dst)->den);
790  break;
791  case AV_OPT_TYPE_CONST:
792  ret = snprintf(buf, sizeof(buf), "%f", o->default_val.dbl);
793  break;
794  case AV_OPT_TYPE_STRING:
795  if (*(uint8_t **)dst) {
796  *out_val = av_strdup(*(uint8_t **)dst);
797  } else if (search_flags & AV_OPT_ALLOW_NULL) {
798  *out_val = NULL;
799  return 0;
800  } else {
801  *out_val = av_strdup("");
802  }
803  return *out_val ? 0 : AVERROR(ENOMEM);
804  case AV_OPT_TYPE_BINARY:
805  if (!*(uint8_t **)dst && (search_flags & AV_OPT_ALLOW_NULL)) {
806  *out_val = NULL;
807  return 0;
808  }
809  len = *(int *)(((uint8_t *)dst) + sizeof(uint8_t *));
810  if ((uint64_t)len * 2 + 1 > INT_MAX)
811  return AVERROR(EINVAL);
812  if (!(*out_val = av_malloc(len * 2 + 1)))
813  return AVERROR(ENOMEM);
814  if (!len) {
815  *out_val[0] = '\0';
816  return 0;
817  }
818  bin = *(uint8_t **)dst;
819  for (i = 0; i < len; i++)
820  snprintf(*out_val + i * 2, 3, "%02X", bin[i]);
821  return 0;
823  ret = snprintf(buf, sizeof(buf), "%dx%d", ((int *)dst)[0], ((int *)dst)[1]);
824  break;
826  ret = snprintf(buf, sizeof(buf), "%s", (char *)av_x_if_null(av_get_pix_fmt_name(*(enum AVPixelFormat *)dst), "none"));
827  break;
829  ret = snprintf(buf, sizeof(buf), "%s", (char *)av_x_if_null(av_get_sample_fmt_name(*(enum AVSampleFormat *)dst), "none"));
830  break;
832  i64 = *(int64_t *)dst;
833  format_duration(buf, sizeof(buf), i64);
834  ret = strlen(buf); // no overflow possible, checked by an assert
835  break;
836  case AV_OPT_TYPE_COLOR:
837  ret = snprintf(buf, sizeof(buf), "0x%02x%02x%02x%02x",
838  (int)((uint8_t *)dst)[0], (int)((uint8_t *)dst)[1],
839  (int)((uint8_t *)dst)[2], (int)((uint8_t *)dst)[3]);
840  break;
842  i64 = *(int64_t *)dst;
843  ret = snprintf(buf, sizeof(buf), "0x%"PRIx64, i64);
844  break;
845  default:
846  return AVERROR(EINVAL);
847  }
848 
849  if (ret >= sizeof(buf))
850  return AVERROR(EINVAL);
851  *out_val = av_strdup(buf);
852  return *out_val ? 0 : AVERROR(ENOMEM);
853 }
854 
855 static int get_number(void *obj, const char *name, const AVOption **o_out, double *num, int *den, int64_t *intnum,
856  int search_flags)
857 {
858  void *dst, *target_obj;
859  const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
860  if (!o || !target_obj)
861  goto error;
862 
863  dst = ((uint8_t *)target_obj) + o->offset;
864 
865  if (o_out) *o_out= o;
866 
867  return read_number(o, dst, num, den, intnum);
868 
869 error:
870  *den =
871  *intnum = 0;
872  return -1;
873 }
874 
875 int av_opt_get_int(void *obj, const char *name, int search_flags, int64_t *out_val)
876 {
877  int64_t intnum = 1;
878  double num = 1;
879  int ret, den = 1;
880 
881  if ((ret = get_number(obj, name, NULL, &num, &den, &intnum, search_flags)) < 0)
882  return ret;
883  *out_val = num * intnum / den;
884  return 0;
885 }
886 
887 int av_opt_get_double(void *obj, const char *name, int search_flags, double *out_val)
888 {
889  int64_t intnum = 1;
890  double num = 1;
891  int ret, den = 1;
892 
893  if ((ret = get_number(obj, name, NULL, &num, &den, &intnum, search_flags)) < 0)
894  return ret;
895  *out_val = num * intnum / den;
896  return 0;
897 }
898 
899 int av_opt_get_q(void *obj, const char *name, int search_flags, AVRational *out_val)
900 {
901  int64_t intnum = 1;
902  double num = 1;
903  int ret, den = 1;
904 
905  if ((ret = get_number(obj, name, NULL, &num, &den, &intnum, search_flags)) < 0)
906  return ret;
907 
908  if (num == 1.0 && (int)intnum == intnum)
909  *out_val = (AVRational){intnum, den};
910  else
911  *out_val = av_d2q(num*intnum/den, 1<<24);
912  return 0;
913 }
914 
915 int av_opt_get_image_size(void *obj, const char *name, int search_flags, int *w_out, int *h_out)
916 {
917  void *dst, *target_obj;
918  const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
919  if (!o || !target_obj)
921  if (o->type != AV_OPT_TYPE_IMAGE_SIZE) {
922  av_log(obj, AV_LOG_ERROR,
923  "The value for option '%s' is not an image size.\n", name);
924  return AVERROR(EINVAL);
925  }
926 
927  dst = ((uint8_t*)target_obj) + o->offset;
928  if (w_out) *w_out = *(int *)dst;
929  if (h_out) *h_out = *((int *)dst+1);
930  return 0;
931 }
932 
933 int av_opt_get_video_rate(void *obj, const char *name, int search_flags, AVRational *out_val)
934 {
935  int64_t intnum = 1;
936  double num = 1;
937  int ret, den = 1;
938 
939  if ((ret = get_number(obj, name, NULL, &num, &den, &intnum, search_flags)) < 0)
940  return ret;
941 
942  if (num == 1.0 && (int)intnum == intnum)
943  *out_val = (AVRational) { intnum, den };
944  else
945  *out_val = av_d2q(num * intnum / den, 1 << 24);
946  return 0;
947 }
948 
949 static int get_format(void *obj, const char *name, int search_flags, int *out_fmt,
950  enum AVOptionType type, const char *desc)
951 {
952  void *dst, *target_obj;
953  const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
954  if (!o || !target_obj)
956  if (o->type != type) {
957  av_log(obj, AV_LOG_ERROR,
958  "The value for option '%s' is not a %s format.\n", desc, name);
959  return AVERROR(EINVAL);
960  }
961 
962  dst = ((uint8_t*)target_obj) + o->offset;
963  *out_fmt = *(int *)dst;
964  return 0;
965 }
966 
967 int av_opt_get_pixel_fmt(void *obj, const char *name, int search_flags, enum AVPixelFormat *out_fmt)
968 {
969  return get_format(obj, name, search_flags, out_fmt, AV_OPT_TYPE_PIXEL_FMT, "pixel");
970 }
971 
972 int av_opt_get_sample_fmt(void *obj, const char *name, int search_flags, enum AVSampleFormat *out_fmt)
973 {
974  return get_format(obj, name, search_flags, out_fmt, AV_OPT_TYPE_SAMPLE_FMT, "sample");
975 }
976 
977 int av_opt_get_channel_layout(void *obj, const char *name, int search_flags, int64_t *cl)
978 {
979  void *dst, *target_obj;
980  const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
981  if (!o || !target_obj)
983  if (o->type != AV_OPT_TYPE_CHANNEL_LAYOUT) {
984  av_log(obj, AV_LOG_ERROR,
985  "The value for option '%s' is not a channel layout.\n", name);
986  return AVERROR(EINVAL);
987  }
988 
989  dst = ((uint8_t*)target_obj) + o->offset;
990  *cl = *(int64_t *)dst;
991  return 0;
992 }
993 
994 int av_opt_get_dict_val(void *obj, const char *name, int search_flags, AVDictionary **out_val)
995 {
996  void *target_obj;
997  AVDictionary *src;
998  const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
999 
1000  if (!o || !target_obj)
1001  return AVERROR_OPTION_NOT_FOUND;
1002  if (o->type != AV_OPT_TYPE_DICT)
1003  return AVERROR(EINVAL);
1004 
1005  src = *(AVDictionary **)(((uint8_t *)target_obj) + o->offset);
1006  av_dict_copy(out_val, src, 0);
1007 
1008  return 0;
1009 }
1010 
1011 int av_opt_flag_is_set(void *obj, const char *field_name, const char *flag_name)
1012 {
1013  const AVOption *field = av_opt_find(obj, field_name, NULL, 0, 0);
1014  const AVOption *flag = av_opt_find(obj, flag_name,
1015  field ? field->unit : NULL, 0, 0);
1016  int64_t res;
1017 
1018  if (!field || !flag || flag->type != AV_OPT_TYPE_CONST ||
1019  av_opt_get_int(obj, field_name, 0, &res) < 0)
1020  return 0;
1021  return res & flag->default_val.i64;
1022 }
1023 
1024 static void log_value(void *av_log_obj, int level, double d)
1025 {
1026  if (d == INT_MAX) {
1027  av_log(av_log_obj, level, "INT_MAX");
1028  } else if (d == INT_MIN) {
1029  av_log(av_log_obj, level, "INT_MIN");
1030  } else if (d == UINT32_MAX) {
1031  av_log(av_log_obj, level, "UINT32_MAX");
1032  } else if (d == (double)INT64_MAX) {
1033  av_log(av_log_obj, level, "I64_MAX");
1034  } else if (d == INT64_MIN) {
1035  av_log(av_log_obj, level, "I64_MIN");
1036  } else if (d == FLT_MAX) {
1037  av_log(av_log_obj, level, "FLT_MAX");
1038  } else if (d == FLT_MIN) {
1039  av_log(av_log_obj, level, "FLT_MIN");
1040  } else if (d == -FLT_MAX) {
1041  av_log(av_log_obj, level, "-FLT_MAX");
1042  } else if (d == -FLT_MIN) {
1043  av_log(av_log_obj, level, "-FLT_MIN");
1044  } else if (d == DBL_MAX) {
1045  av_log(av_log_obj, level, "DBL_MAX");
1046  } else if (d == DBL_MIN) {
1047  av_log(av_log_obj, level, "DBL_MIN");
1048  } else if (d == -DBL_MAX) {
1049  av_log(av_log_obj, level, "-DBL_MAX");
1050  } else if (d == -DBL_MIN) {
1051  av_log(av_log_obj, level, "-DBL_MIN");
1052  } else {
1053  av_log(av_log_obj, level, "%g", d);
1054  }
1055 }
1056 
1057 static const char *get_opt_const_name(void *obj, const char *unit, int64_t value)
1058 {
1059  const AVOption *opt = NULL;
1060 
1061  if (!unit)
1062  return NULL;
1063  while ((opt = av_opt_next(obj, opt)))
1064  if (opt->type == AV_OPT_TYPE_CONST && !strcmp(opt->unit, unit) &&
1065  opt->default_val.i64 == value)
1066  return opt->name;
1067  return NULL;
1068 }
1069 
1070 static char *get_opt_flags_string(void *obj, const char *unit, int64_t value)
1071 {
1072  const AVOption *opt = NULL;
1073  char flags[512];
1074 
1075  flags[0] = 0;
1076  if (!unit)
1077  return NULL;
1078  while ((opt = av_opt_next(obj, opt))) {
1079  if (opt->type == AV_OPT_TYPE_CONST && !strcmp(opt->unit, unit) &&
1080  opt->default_val.i64 & value) {
1081  if (flags[0])
1082  av_strlcatf(flags, sizeof(flags), "+");
1083  av_strlcatf(flags, sizeof(flags), "%s", opt->name);
1084  }
1085  }
1086  if (flags[0])
1087  return av_strdup(flags);
1088  return NULL;
1089 }
1090 
1091 static void opt_list(void *obj, void *av_log_obj, const char *unit,
1092  int req_flags, int rej_flags)
1093 {
1094  const AVOption *opt = NULL;
1095  AVOptionRanges *r;
1096  int i;
1097 
1098  while ((opt = av_opt_next(obj, opt))) {
1099  if (!(opt->flags & req_flags) || (opt->flags & rej_flags))
1100  continue;
1101 
1102  /* Don't print CONST's on level one.
1103  * Don't print anything but CONST's on level two.
1104  * Only print items from the requested unit.
1105  */
1106  if (!unit && opt->type == AV_OPT_TYPE_CONST)
1107  continue;
1108  else if (unit && opt->type != AV_OPT_TYPE_CONST)
1109  continue;
1110  else if (unit && opt->type == AV_OPT_TYPE_CONST && strcmp(unit, opt->unit))
1111  continue;
1112  else if (unit && opt->type == AV_OPT_TYPE_CONST)
1113  av_log(av_log_obj, AV_LOG_INFO, " %-15s ", opt->name);
1114  else
1115  av_log(av_log_obj, AV_LOG_INFO, " %s%-17s ",
1116  (opt->flags & AV_OPT_FLAG_FILTERING_PARAM) ? "" : "-",
1117  opt->name);
1118 
1119  switch (opt->type) {
1120  case AV_OPT_TYPE_FLAGS:
1121  av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<flags>");
1122  break;
1123  case AV_OPT_TYPE_INT:
1124  av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<int>");
1125  break;
1126  case AV_OPT_TYPE_INT64:
1127  av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<int64>");
1128  break;
1129  case AV_OPT_TYPE_UINT64:
1130  av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<uint64>");
1131  break;
1132  case AV_OPT_TYPE_DOUBLE:
1133  av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<double>");
1134  break;
1135  case AV_OPT_TYPE_FLOAT:
1136  av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<float>");
1137  break;
1138  case AV_OPT_TYPE_STRING:
1139  av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<string>");
1140  break;
1141  case AV_OPT_TYPE_RATIONAL:
1142  av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<rational>");
1143  break;
1144  case AV_OPT_TYPE_BINARY:
1145  av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<binary>");
1146  break;
1148  av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<image_size>");
1149  break;
1151  av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<video_rate>");
1152  break;
1153  case AV_OPT_TYPE_PIXEL_FMT:
1154  av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<pix_fmt>");
1155  break;
1157  av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<sample_fmt>");
1158  break;
1159  case AV_OPT_TYPE_DURATION:
1160  av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<duration>");
1161  break;
1162  case AV_OPT_TYPE_COLOR:
1163  av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<color>");
1164  break;
1166  av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<channel_layout>");
1167  break;
1168  case AV_OPT_TYPE_BOOL:
1169  av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<boolean>");
1170  break;
1171  case AV_OPT_TYPE_CONST:
1172  default:
1173  av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "");
1174  break;
1175  }
1176  av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_ENCODING_PARAM) ? 'E' : '.');
1177  av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_DECODING_PARAM) ? 'D' : '.');
1178  av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_FILTERING_PARAM)? 'F' : '.');
1179  av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_VIDEO_PARAM ) ? 'V' : '.');
1180  av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_AUDIO_PARAM ) ? 'A' : '.');
1181  av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_SUBTITLE_PARAM) ? 'S' : '.');
1182  av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_EXPORT) ? 'X' : '.');
1183  av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_READONLY) ? 'R' : '.');
1184 
1185  if (opt->help)
1186  av_log(av_log_obj, AV_LOG_INFO, " %s", opt->help);
1187 
1188  if (av_opt_query_ranges(&r, obj, opt->name, AV_OPT_SEARCH_FAKE_OBJ) >= 0) {
1189  switch (opt->type) {
1190  case AV_OPT_TYPE_INT:
1191  case AV_OPT_TYPE_INT64:
1192  case AV_OPT_TYPE_UINT64:
1193  case AV_OPT_TYPE_DOUBLE:
1194  case AV_OPT_TYPE_FLOAT:
1195  case AV_OPT_TYPE_RATIONAL:
1196  for (i = 0; i < r->nb_ranges; i++) {
1197  av_log(av_log_obj, AV_LOG_INFO, " (from ");
1198  log_value(av_log_obj, AV_LOG_INFO, r->range[i]->value_min);
1199  av_log(av_log_obj, AV_LOG_INFO, " to ");
1200  log_value(av_log_obj, AV_LOG_INFO, r->range[i]->value_max);
1201  av_log(av_log_obj, AV_LOG_INFO, ")");
1202  }
1203  break;
1204  }
1205  av_opt_freep_ranges(&r);
1206  }
1207 
1208  if (opt->type != AV_OPT_TYPE_CONST &&
1209  opt->type != AV_OPT_TYPE_BINARY &&
1210  !((opt->type == AV_OPT_TYPE_COLOR ||
1211  opt->type == AV_OPT_TYPE_IMAGE_SIZE ||
1212  opt->type == AV_OPT_TYPE_STRING ||
1213  opt->type == AV_OPT_TYPE_VIDEO_RATE) &&
1214  !opt->default_val.str)) {
1215  av_log(av_log_obj, AV_LOG_INFO, " (default ");
1216  switch (opt->type) {
1217  case AV_OPT_TYPE_BOOL:
1218  av_log(av_log_obj, AV_LOG_INFO, "%s", (char *)av_x_if_null(get_bool_name(opt->default_val.i64), "invalid"));
1219  break;
1220  case AV_OPT_TYPE_FLAGS: {
1221  char *def_flags = get_opt_flags_string(obj, opt->unit, opt->default_val.i64);
1222  if (def_flags) {
1223  av_log(av_log_obj, AV_LOG_INFO, "%s", def_flags);
1224  av_freep(&def_flags);
1225  } else {
1226  av_log(av_log_obj, AV_LOG_INFO, "%"PRIX64, opt->default_val.i64);
1227  }
1228  break;
1229  }
1230  case AV_OPT_TYPE_DURATION: {
1231  char buf[25];
1232  format_duration(buf, sizeof(buf), opt->default_val.i64);
1233  av_log(av_log_obj, AV_LOG_INFO, "%s", buf);
1234  break;
1235  }
1236  case AV_OPT_TYPE_INT:
1237  case AV_OPT_TYPE_UINT64:
1238  case AV_OPT_TYPE_INT64: {
1239  const char *def_const = get_opt_const_name(obj, opt->unit, opt->default_val.i64);
1240  if (def_const)
1241  av_log(av_log_obj, AV_LOG_INFO, "%s", def_const);
1242  else
1243  log_value(av_log_obj, AV_LOG_INFO, opt->default_val.i64);
1244  break;
1245  }
1246  case AV_OPT_TYPE_DOUBLE:
1247  case AV_OPT_TYPE_FLOAT:
1248  log_value(av_log_obj, AV_LOG_INFO, opt->default_val.dbl);
1249  break;
1250  case AV_OPT_TYPE_RATIONAL: {
1251  AVRational q = av_d2q(opt->default_val.dbl, INT_MAX);
1252  av_log(av_log_obj, AV_LOG_INFO, "%d/%d", q.num, q.den); }
1253  break;
1254  case AV_OPT_TYPE_PIXEL_FMT:
1255  av_log(av_log_obj, AV_LOG_INFO, "%s", (char *)av_x_if_null(av_get_pix_fmt_name(opt->default_val.i64), "none"));
1256  break;
1258  av_log(av_log_obj, AV_LOG_INFO, "%s", (char *)av_x_if_null(av_get_sample_fmt_name(opt->default_val.i64), "none"));
1259  break;
1260  case AV_OPT_TYPE_COLOR:
1262  case AV_OPT_TYPE_STRING:
1264  av_log(av_log_obj, AV_LOG_INFO, "\"%s\"", opt->default_val.str);
1265  break;
1267  av_log(av_log_obj, AV_LOG_INFO, "0x%"PRIx64, opt->default_val.i64);
1268  break;
1269  }
1270  av_log(av_log_obj, AV_LOG_INFO, ")");
1271  }
1272 
1273  av_log(av_log_obj, AV_LOG_INFO, "\n");
1274  if (opt->unit && opt->type != AV_OPT_TYPE_CONST)
1275  opt_list(obj, av_log_obj, opt->unit, req_flags, rej_flags);
1276  }
1277 }
1278 
1279 int av_opt_show2(void *obj, void *av_log_obj, int req_flags, int rej_flags)
1280 {
1281  if (!obj)
1282  return -1;
1283 
1284  av_log(av_log_obj, AV_LOG_INFO, "%s AVOptions:\n", (*(AVClass **)obj)->class_name);
1285 
1286  opt_list(obj, av_log_obj, NULL, req_flags, rej_flags);
1287 
1288  return 0;
1289 }
1290 
1292 {
1293  av_opt_set_defaults2(s, 0, 0);
1294 }
1295 
1296 void av_opt_set_defaults2(void *s, int mask, int flags)
1297 {
1298  const AVOption *opt = NULL;
1299  while ((opt = av_opt_next(s, opt))) {
1300  void *dst = ((uint8_t*)s) + opt->offset;
1301 
1302  if ((opt->flags & mask) != flags)
1303  continue;
1304 
1305  if (opt->flags & AV_OPT_FLAG_READONLY)
1306  continue;
1307 
1308  switch (opt->type) {
1309  case AV_OPT_TYPE_CONST:
1310  /* Nothing to be done here */
1311  break;
1312  case AV_OPT_TYPE_BOOL:
1313  case AV_OPT_TYPE_FLAGS:
1314  case AV_OPT_TYPE_INT:
1315  case AV_OPT_TYPE_INT64:
1316  case AV_OPT_TYPE_UINT64:
1317  case AV_OPT_TYPE_DURATION:
1319  case AV_OPT_TYPE_PIXEL_FMT:
1321  write_number(s, opt, dst, 1, 1, opt->default_val.i64);
1322  break;
1323  case AV_OPT_TYPE_DOUBLE:
1324  case AV_OPT_TYPE_FLOAT: {
1325  double val;
1326  val = opt->default_val.dbl;
1327  write_number(s, opt, dst, val, 1, 1);
1328  }
1329  break;
1330  case AV_OPT_TYPE_RATIONAL: {
1331  AVRational val;
1332  val = av_d2q(opt->default_val.dbl, INT_MAX);
1333  write_number(s, opt, dst, 1, val.den, val.num);
1334  }
1335  break;
1336  case AV_OPT_TYPE_COLOR:
1337  set_string_color(s, opt, opt->default_val.str, dst);
1338  break;
1339  case AV_OPT_TYPE_STRING:
1340  set_string(s, opt, opt->default_val.str, dst);
1341  break;
1343  set_string_image_size(s, opt, opt->default_val.str, dst);
1344  break;
1346  set_string_video_rate(s, opt, opt->default_val.str, dst);
1347  break;
1348  case AV_OPT_TYPE_BINARY:
1349  set_string_binary(s, opt, opt->default_val.str, dst);
1350  break;
1351  case AV_OPT_TYPE_DICT:
1352  /* Cannot set defaults for these types */
1353  break;
1354  default:
1355  av_log(s, AV_LOG_DEBUG, "AVOption type %d of option %s not implemented yet\n",
1356  opt->type, opt->name);
1357  }
1358  }
1359 }
1360 
1361 /**
1362  * Store the value in the field in ctx that is named like key.
1363  * ctx must be an AVClass context, storing is done using AVOptions.
1364  *
1365  * @param buf the string to parse, buf will be updated to point at the
1366  * separator just after the parsed key/value pair
1367  * @param key_val_sep a 0-terminated list of characters used to
1368  * separate key from value
1369  * @param pairs_sep a 0-terminated list of characters used to separate
1370  * two pairs from each other
1371  * @return 0 if the key/value pair has been successfully parsed and
1372  * set, or a negative value corresponding to an AVERROR code in case
1373  * of error:
1374  * AVERROR(EINVAL) if the key/value pair cannot be parsed,
1375  * the error code issued by av_opt_set() if the key/value pair
1376  * cannot be set
1377  */
1378 static int parse_key_value_pair(void *ctx, const char **buf,
1379  const char *key_val_sep, const char *pairs_sep)
1380 {
1381  char *key = av_get_token(buf, key_val_sep);
1382  char *val;
1383  int ret;
1384 
1385  if (!key)
1386  return AVERROR(ENOMEM);
1387 
1388  if (*key && strspn(*buf, key_val_sep)) {
1389  (*buf)++;
1390  val = av_get_token(buf, pairs_sep);
1391  if (!val) {
1392  av_freep(&key);
1393  return AVERROR(ENOMEM);
1394  }
1395  } else {
1396  av_log(ctx, AV_LOG_ERROR, "Missing key or no key/value separator found after key '%s'\n", key);
1397  av_free(key);
1398  return AVERROR(EINVAL);
1399  }
1400 
1401  av_log(ctx, AV_LOG_DEBUG, "Setting entry with key '%s' to value '%s'\n", key, val);
1402 
1403  ret = av_opt_set(ctx, key, val, AV_OPT_SEARCH_CHILDREN);
1404  if (ret == AVERROR_OPTION_NOT_FOUND)
1405  av_log(ctx, AV_LOG_ERROR, "Key '%s' not found.\n", key);
1406 
1407  av_free(key);
1408  av_free(val);
1409  return ret;
1410 }
1411 
1412 int av_set_options_string(void *ctx, const char *opts,
1413  const char *key_val_sep, const char *pairs_sep)
1414 {
1415  int ret, count = 0;
1416 
1417  if (!opts)
1418  return 0;
1419 
1420  while (*opts) {
1421  if ((ret = parse_key_value_pair(ctx, &opts, key_val_sep, pairs_sep)) < 0)
1422  return ret;
1423  count++;
1424 
1425  if (*opts)
1426  opts++;
1427  }
1428 
1429  return count;
1430 }
1431 
1432 #define WHITESPACES " \n\t\r"
1433 
1434 static int is_key_char(char c)
1435 {
1436  return (unsigned)((c | 32) - 'a') < 26 ||
1437  (unsigned)(c - '0') < 10 ||
1438  c == '-' || c == '_' || c == '/' || c == '.';
1439 }
1440 
1441 /**
1442  * Read a key from a string.
1443  *
1444  * The key consists of is_key_char characters and must be terminated by a
1445  * character from the delim string; spaces are ignored.
1446  *
1447  * @return 0 for success (even with ellipsis), <0 for failure
1448  */
1449 static int get_key(const char **ropts, const char *delim, char **rkey)
1450 {
1451  const char *opts = *ropts;
1452  const char *key_start, *key_end;
1453 
1454  key_start = opts += strspn(opts, WHITESPACES);
1455  while (is_key_char(*opts))
1456  opts++;
1457  key_end = opts;
1458  opts += strspn(opts, WHITESPACES);
1459  if (!*opts || !strchr(delim, *opts))
1460  return AVERROR(EINVAL);
1461  opts++;
1462  if (!(*rkey = av_malloc(key_end - key_start + 1)))
1463  return AVERROR(ENOMEM);
1464  memcpy(*rkey, key_start, key_end - key_start);
1465  (*rkey)[key_end - key_start] = 0;
1466  *ropts = opts;
1467  return 0;
1468 }
1469 
1470 int av_opt_get_key_value(const char **ropts,
1471  const char *key_val_sep, const char *pairs_sep,
1472  unsigned flags,
1473  char **rkey, char **rval)
1474 {
1475  int ret;
1476  char *key = NULL, *val;
1477  const char *opts = *ropts;
1478 
1479  if ((ret = get_key(&opts, key_val_sep, &key)) < 0 &&
1480  !(flags & AV_OPT_FLAG_IMPLICIT_KEY))
1481  return AVERROR(EINVAL);
1482  if (!(val = av_get_token(&opts, pairs_sep))) {
1483  av_free(key);
1484  return AVERROR(ENOMEM);
1485  }
1486  *ropts = opts;
1487  *rkey = key;
1488  *rval = val;
1489  return 0;
1490 }
1491 
1492 int av_opt_set_from_string(void *ctx, const char *opts,
1493  const char *const *shorthand,
1494  const char *key_val_sep, const char *pairs_sep)
1495 {
1496  int ret, count = 0;
1497  const char *dummy_shorthand = NULL;
1498  char *av_uninit(parsed_key), *av_uninit(value);
1499  const char *key;
1500 
1501  if (!opts)
1502  return 0;
1503  if (!shorthand)
1504  shorthand = &dummy_shorthand;
1505 
1506  while (*opts) {
1507  ret = av_opt_get_key_value(&opts, key_val_sep, pairs_sep,
1508  *shorthand ? AV_OPT_FLAG_IMPLICIT_KEY : 0,
1509  &parsed_key, &value);
1510  if (ret < 0) {
1511  if (ret == AVERROR(EINVAL))
1512  av_log(ctx, AV_LOG_ERROR, "No option name near '%s'\n", opts);
1513  else
1514  av_log(ctx, AV_LOG_ERROR, "Unable to parse '%s': %s\n", opts,
1515  av_err2str(ret));
1516  return ret;
1517  }
1518  if (*opts)
1519  opts++;
1520  if (parsed_key) {
1521  key = parsed_key;
1522  while (*shorthand) /* discard all remaining shorthand */
1523  shorthand++;
1524  } else {
1525  key = *(shorthand++);
1526  }
1527 
1528  av_log(ctx, AV_LOG_DEBUG, "Setting '%s' to value '%s'\n", key, value);
1529  if ((ret = av_opt_set(ctx, key, value, 0)) < 0) {
1530  if (ret == AVERROR_OPTION_NOT_FOUND)
1531  av_log(ctx, AV_LOG_ERROR, "Option '%s' not found\n", key);
1532  av_free(value);
1533  av_free(parsed_key);
1534  return ret;
1535  }
1536 
1537  av_free(value);
1538  av_free(parsed_key);
1539  count++;
1540  }
1541  return count;
1542 }
1543 
1544 void av_opt_free(void *obj)
1545 {
1546  const AVOption *o = NULL;
1547  while ((o = av_opt_next(obj, o))) {
1548  switch (o->type) {
1549  case AV_OPT_TYPE_STRING:
1550  case AV_OPT_TYPE_BINARY:
1551  av_freep((uint8_t *)obj + o->offset);
1552  break;
1553 
1554  case AV_OPT_TYPE_DICT:
1555  av_dict_free((AVDictionary **)(((uint8_t *)obj) + o->offset));
1556  break;
1557 
1558  default:
1559  break;
1560  }
1561  }
1562 }
1563 
1564 int av_opt_set_dict2(void *obj, AVDictionary **options, int search_flags)
1565 {
1566  AVDictionaryEntry *t = NULL;
1567  AVDictionary *tmp = NULL;
1568  int ret = 0;
1569 
1570  if (!options)
1571  return 0;
1572 
1573  while ((t = av_dict_get(*options, "", t, AV_DICT_IGNORE_SUFFIX))) {
1574  ret = av_opt_set(obj, t->key, t->value, search_flags);
1575  if (ret == AVERROR_OPTION_NOT_FOUND)
1576  ret = av_dict_set(&tmp, t->key, t->value, 0);
1577  if (ret < 0) {
1578  av_log(obj, AV_LOG_ERROR, "Error setting option %s to value %s.\n", t->key, t->value);
1579  av_dict_free(&tmp);
1580  return ret;
1581  }
1582  ret = 0;
1583  }
1584  av_dict_free(options);
1585  *options = tmp;
1586  return ret;
1587 }
1588 
1590 {
1591  return av_opt_set_dict2(obj, options, 0);
1592 }
1593 
1594 const AVOption *av_opt_find(void *obj, const char *name, const char *unit,
1595  int opt_flags, int search_flags)
1596 {
1597  return av_opt_find2(obj, name, unit, opt_flags, search_flags, NULL);
1598 }
1599 
1600 const AVOption *av_opt_find2(void *obj, const char *name, const char *unit,
1601  int opt_flags, int search_flags, void **target_obj)
1602 {
1603  const AVClass *c;
1604  const AVOption *o = NULL;
1605 
1606  if(!obj)
1607  return NULL;
1608 
1609  c= *(AVClass**)obj;
1610 
1611  if (!c)
1612  return NULL;
1613 
1614  if (search_flags & AV_OPT_SEARCH_CHILDREN) {
1615  if (search_flags & AV_OPT_SEARCH_FAKE_OBJ) {
1616  const AVClass *child = NULL;
1617  while (child = av_opt_child_class_next(c, child))
1618  if (o = av_opt_find2(&child, name, unit, opt_flags, search_flags, NULL))
1619  return o;
1620  } else {
1621  void *child = NULL;
1622  while (child = av_opt_child_next(obj, child))
1623  if (o = av_opt_find2(child, name, unit, opt_flags, search_flags, target_obj))
1624  return o;
1625  }
1626  }
1627 
1628  while (o = av_opt_next(obj, o)) {
1629  if (!strcmp(o->name, name) && (o->flags & opt_flags) == opt_flags &&
1630  ((!unit && o->type != AV_OPT_TYPE_CONST) ||
1631  (unit && o->type == AV_OPT_TYPE_CONST && o->unit && !strcmp(o->unit, unit)))) {
1632  if (target_obj) {
1633  if (!(search_flags & AV_OPT_SEARCH_FAKE_OBJ))
1634  *target_obj = obj;
1635  else
1636  *target_obj = NULL;
1637  }
1638  return o;
1639  }
1640  }
1641  return NULL;
1642 }
1643 
1644 void *av_opt_child_next(void *obj, void *prev)
1645 {
1646  const AVClass *c = *(AVClass **)obj;
1647  if (c->child_next)
1648  return c->child_next(obj, prev);
1649  return NULL;
1650 }
1651 
1652 const AVClass *av_opt_child_class_next(const AVClass *parent, const AVClass *prev)
1653 {
1654  if (parent->child_class_next)
1655  return parent->child_class_next(prev);
1656  return NULL;
1657 }
1658 
1659 void *av_opt_ptr(const AVClass *class, void *obj, const char *name)
1660 {
1661  const AVOption *opt= av_opt_find2(&class, name, NULL, 0, AV_OPT_SEARCH_FAKE_OBJ, NULL);
1662  if(!opt)
1663  return NULL;
1664  return (uint8_t*)obj + opt->offset;
1665 }
1666 
1667 static int opt_size(enum AVOptionType type)
1668 {
1669  switch(type) {
1670  case AV_OPT_TYPE_BOOL:
1671  case AV_OPT_TYPE_INT:
1672  case AV_OPT_TYPE_FLAGS:
1673  return sizeof(int);
1674  case AV_OPT_TYPE_DURATION:
1676  case AV_OPT_TYPE_INT64:
1677  case AV_OPT_TYPE_UINT64:
1678  return sizeof(int64_t);
1679  case AV_OPT_TYPE_DOUBLE:
1680  return sizeof(double);
1681  case AV_OPT_TYPE_FLOAT:
1682  return sizeof(float);
1683  case AV_OPT_TYPE_STRING:
1684  return sizeof(uint8_t*);
1686  case AV_OPT_TYPE_RATIONAL:
1687  return sizeof(AVRational);
1688  case AV_OPT_TYPE_BINARY:
1689  return sizeof(uint8_t*) + sizeof(int);
1691  return sizeof(int[2]);
1692  case AV_OPT_TYPE_PIXEL_FMT:
1693  return sizeof(enum AVPixelFormat);
1695  return sizeof(enum AVSampleFormat);
1696  case AV_OPT_TYPE_COLOR:
1697  return 4;
1698  }
1699  return AVERROR(EINVAL);
1700 }
1701 
1702 int av_opt_copy(void *dst, const void *src)
1703 {
1704  const AVOption *o = NULL;
1705  const AVClass *c;
1706  int ret = 0;
1707 
1708  if (!src)
1709  return AVERROR(EINVAL);
1710 
1711  c = *(AVClass **)src;
1712  if (!c || c != *(AVClass **)dst)
1713  return AVERROR(EINVAL);
1714 
1715  while ((o = av_opt_next(src, o))) {
1716  void *field_dst = (uint8_t *)dst + o->offset;
1717  void *field_src = (uint8_t *)src + o->offset;
1718  uint8_t **field_dst8 = (uint8_t **)field_dst;
1719  uint8_t **field_src8 = (uint8_t **)field_src;
1720 
1721  if (o->type == AV_OPT_TYPE_STRING) {
1722  if (*field_dst8 != *field_src8)
1723  av_freep(field_dst8);
1724  *field_dst8 = av_strdup(*field_src8);
1725  if (*field_src8 && !*field_dst8)
1726  ret = AVERROR(ENOMEM);
1727  } else if (o->type == AV_OPT_TYPE_BINARY) {
1728  int len = *(int *)(field_src8 + 1);
1729  if (*field_dst8 != *field_src8)
1730  av_freep(field_dst8);
1731  *field_dst8 = av_memdup(*field_src8, len);
1732  if (len && !*field_dst8) {
1733  ret = AVERROR(ENOMEM);
1734  len = 0;
1735  }
1736  *(int *)(field_dst8 + 1) = len;
1737  } else if (o->type == AV_OPT_TYPE_CONST) {
1738  // do nothing
1739  } else if (o->type == AV_OPT_TYPE_DICT) {
1740  AVDictionary **sdict = (AVDictionary **) field_src;
1741  AVDictionary **ddict = (AVDictionary **) field_dst;
1742  if (*sdict != *ddict)
1743  av_dict_free(ddict);
1744  *ddict = NULL;
1745  av_dict_copy(ddict, *sdict, 0);
1746  if (av_dict_count(*sdict) != av_dict_count(*ddict))
1747  ret = AVERROR(ENOMEM);
1748  } else {
1749  int size = opt_size(o->type);
1750  if (size < 0)
1751  ret = size;
1752  else
1753  memcpy(field_dst, field_src, size);
1754  }
1755  }
1756  return ret;
1757 }
1758 
1759 int av_opt_query_ranges(AVOptionRanges **ranges_arg, void *obj, const char *key, int flags)
1760 {
1761  int ret;
1762  const AVClass *c = *(AVClass**)obj;
1763  int (*callback)(AVOptionRanges **, void *obj, const char *key, int flags) = NULL;
1764 
1765  if (c->version > (52 << 16 | 11 << 8))
1766  callback = c->query_ranges;
1767 
1768  if (!callback)
1770 
1771  ret = callback(ranges_arg, obj, key, flags);
1772  if (ret >= 0) {
1773  if (!(flags & AV_OPT_MULTI_COMPONENT_RANGE))
1774  ret = 1;
1775  (*ranges_arg)->nb_components = ret;
1776  }
1777  return ret;
1778 }
1779 
1780 int av_opt_query_ranges_default(AVOptionRanges **ranges_arg, void *obj, const char *key, int flags)
1781 {
1782  AVOptionRanges *ranges = av_mallocz(sizeof(*ranges));
1783  AVOptionRange **range_array = av_mallocz(sizeof(void*));
1784  AVOptionRange *range = av_mallocz(sizeof(*range));
1785  const AVOption *field = av_opt_find(obj, key, NULL, 0, flags);
1786  int ret;
1787 
1788  *ranges_arg = NULL;
1789 
1790  if (!ranges || !range || !range_array || !field) {
1791  ret = AVERROR(ENOMEM);
1792  goto fail;
1793  }
1794 
1795  ranges->range = range_array;
1796  ranges->range[0] = range;
1797  ranges->nb_ranges = 1;
1798  ranges->nb_components = 1;
1799  range->is_range = 1;
1800  range->value_min = field->min;
1801  range->value_max = field->max;
1802 
1803  switch (field->type) {
1804  case AV_OPT_TYPE_BOOL:
1805  case AV_OPT_TYPE_INT:
1806  case AV_OPT_TYPE_INT64:
1807  case AV_OPT_TYPE_UINT64:
1808  case AV_OPT_TYPE_PIXEL_FMT:
1810  case AV_OPT_TYPE_FLOAT:
1811  case AV_OPT_TYPE_DOUBLE:
1812  case AV_OPT_TYPE_DURATION:
1813  case AV_OPT_TYPE_COLOR:
1815  break;
1816  case AV_OPT_TYPE_STRING:
1817  range->component_min = 0;
1818  range->component_max = 0x10FFFF; // max unicode value
1819  range->value_min = -1;
1820  range->value_max = INT_MAX;
1821  break;
1822  case AV_OPT_TYPE_RATIONAL:
1823  range->component_min = INT_MIN;
1824  range->component_max = INT_MAX;
1825  break;
1827  range->component_min = 0;
1828  range->component_max = INT_MAX/128/8;
1829  range->value_min = 0;
1830  range->value_max = INT_MAX/8;
1831  break;
1833  range->component_min = 1;
1834  range->component_max = INT_MAX;
1835  range->value_min = 1;
1836  range->value_max = INT_MAX;
1837  break;
1838  default:
1839  ret = AVERROR(ENOSYS);
1840  goto fail;
1841  }
1842 
1843  *ranges_arg = ranges;
1844  return 1;
1845 fail:
1846  av_free(ranges);
1847  av_free(range);
1848  av_free(range_array);
1849  return ret;
1850 }
1851 
1853 {
1854  int i;
1855  AVOptionRanges *ranges = *rangesp;
1856 
1857  if (!ranges)
1858  return;
1859 
1860  for (i = 0; i < ranges->nb_ranges * ranges->nb_components; i++) {
1861  AVOptionRange *range = ranges->range[i];
1862  if (range) {
1863  av_freep(&range->str);
1864  av_freep(&ranges->range[i]);
1865  }
1866  }
1867  av_freep(&ranges->range);
1868  av_freep(rangesp);
1869 }
1870 
1871 int av_opt_is_set_to_default(void *obj, const AVOption *o)
1872 {
1873  int64_t i64;
1874  double d, d2;
1875  float f;
1876  AVRational q;
1877  int ret, w, h;
1878  char *str;
1879  void *dst;
1880 
1881  if (!o || !obj)
1882  return AVERROR(EINVAL);
1883 
1884  dst = ((uint8_t*)obj) + o->offset;
1885 
1886  switch (o->type) {
1887  case AV_OPT_TYPE_CONST:
1888  return 1;
1889  case AV_OPT_TYPE_BOOL:
1890  case AV_OPT_TYPE_FLAGS:
1891  case AV_OPT_TYPE_PIXEL_FMT:
1893  case AV_OPT_TYPE_INT:
1895  case AV_OPT_TYPE_DURATION:
1896  case AV_OPT_TYPE_INT64:
1897  case AV_OPT_TYPE_UINT64:
1898  read_number(o, dst, NULL, NULL, &i64);
1899  return o->default_val.i64 == i64;
1900  case AV_OPT_TYPE_STRING:
1901  str = *(char **)dst;
1902  if (str == o->default_val.str) //2 NULLs
1903  return 1;
1904  if (!str || !o->default_val.str) //1 NULL
1905  return 0;
1906  return !strcmp(str, o->default_val.str);
1907  case AV_OPT_TYPE_DOUBLE:
1908  read_number(o, dst, &d, NULL, NULL);
1909  return o->default_val.dbl == d;
1910  case AV_OPT_TYPE_FLOAT:
1911  read_number(o, dst, &d, NULL, NULL);
1912  f = o->default_val.dbl;
1913  d2 = f;
1914  return d2 == d;
1915  case AV_OPT_TYPE_RATIONAL:
1916  q = av_d2q(o->default_val.dbl, INT_MAX);
1917  return !av_cmp_q(*(AVRational*)dst, q);
1918  case AV_OPT_TYPE_BINARY: {
1919  struct {
1920  uint8_t *data;
1921  int size;
1922  } tmp = {0};
1923  int opt_size = *(int *)((void **)dst + 1);
1924  void *opt_ptr = *(void **)dst;
1925  if (!opt_size && (!o->default_val.str || !strlen(o->default_val.str)))
1926  return 1;
1927  if (!opt_size || !o->default_val.str || !strlen(o->default_val.str ))
1928  return 0;
1929  if (opt_size != strlen(o->default_val.str) / 2)
1930  return 0;
1931  ret = set_string_binary(NULL, NULL, o->default_val.str, &tmp.data);
1932  if (!ret)
1933  ret = !memcmp(opt_ptr, tmp.data, tmp.size);
1934  av_free(tmp.data);
1935  return ret;
1936  }
1937  case AV_OPT_TYPE_DICT:
1938  /* Binary and dict have not default support yet. Any pointer is not default. */
1939  return !!(*(void **)dst);
1941  if (!o->default_val.str || !strcmp(o->default_val.str, "none"))
1942  w = h = 0;
1943  else if ((ret = av_parse_video_size(&w, &h, o->default_val.str)) < 0)
1944  return ret;
1945  return (w == *(int *)dst) && (h == *((int *)dst+1));
1947  q = (AVRational){0, 0};
1948  if (o->default_val.str) {
1949  if ((ret = av_parse_video_rate(&q, o->default_val.str)) < 0)
1950  return ret;
1951  }
1952  return !av_cmp_q(*(AVRational*)dst, q);
1953  case AV_OPT_TYPE_COLOR: {
1954  uint8_t color[4] = {0, 0, 0, 0};
1955  if (o->default_val.str) {
1956  if ((ret = av_parse_color(color, o->default_val.str, -1, NULL)) < 0)
1957  return ret;
1958  }
1959  return !memcmp(color, dst, sizeof(color));
1960  }
1961  default:
1962  av_log(obj, AV_LOG_WARNING, "Not supported option type: %d, option name: %s\n", o->type, o->name);
1963  break;
1964  }
1965  return AVERROR_PATCHWELCOME;
1966 }
1967 
1968 int av_opt_is_set_to_default_by_name(void *obj, const char *name, int search_flags)
1969 {
1970  const AVOption *o;
1971  void *target;
1972  if (!obj)
1973  return AVERROR(EINVAL);
1974  o = av_opt_find2(obj, name, NULL, 0, search_flags, &target);
1975  if (!o)
1976  return AVERROR_OPTION_NOT_FOUND;
1977  return av_opt_is_set_to_default(target, o);
1978 }
1979 
1980 int av_opt_serialize(void *obj, int opt_flags, int flags, char **buffer,
1981  const char key_val_sep, const char pairs_sep)
1982 {
1983  const AVOption *o = NULL;
1984  uint8_t *buf;
1985  AVBPrint bprint;
1986  int ret, cnt = 0;
1987  const char special_chars[] = {pairs_sep, key_val_sep, '\0'};
1988 
1989  if (pairs_sep == '\0' || key_val_sep == '\0' || pairs_sep == key_val_sep ||
1990  pairs_sep == '\\' || key_val_sep == '\\') {
1991  av_log(obj, AV_LOG_ERROR, "Invalid separator(s) found.");
1992  return AVERROR(EINVAL);
1993  }
1994 
1995  if (!obj || !buffer)
1996  return AVERROR(EINVAL);
1997 
1998  *buffer = NULL;
2000 
2001  while (o = av_opt_next(obj, o)) {
2002  if (o->type == AV_OPT_TYPE_CONST)
2003  continue;
2004  if ((flags & AV_OPT_SERIALIZE_OPT_FLAGS_EXACT) && o->flags != opt_flags)
2005  continue;
2006  else if (((o->flags & opt_flags) != opt_flags))
2007  continue;
2008  if (flags & AV_OPT_SERIALIZE_SKIP_DEFAULTS && av_opt_is_set_to_default(obj, o) > 0)
2009  continue;
2010  if ((ret = av_opt_get(obj, o->name, 0, &buf)) < 0) {
2011  av_bprint_finalize(&bprint, NULL);
2012  return ret;
2013  }
2014  if (buf) {
2015  if (cnt++)
2016  av_bprint_append_data(&bprint, &pairs_sep, 1);
2017  av_bprint_escape(&bprint, o->name, special_chars, AV_ESCAPE_MODE_BACKSLASH, 0);
2018  av_bprint_append_data(&bprint, &key_val_sep, 1);
2019  av_bprint_escape(&bprint, buf, special_chars, AV_ESCAPE_MODE_BACKSLASH, 0);
2020  av_freep(&buf);
2021  }
2022  }
2023  av_bprint_finalize(&bprint, buffer);
2024  return 0;
2025 }
int av_opt_get_dict_val(void *obj, const char *name, int search_flags, AVDictionary **out_val)
Definition: opt.c:994
#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:307
const char * s
Definition: avisynth_c.h:768
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:1070
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:568
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:287
#define AV_OPT_FLAG_SUBTITLE_PARAM
Definition: opt.h:283
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:1644
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:60
static int get_key(const char **ropts, const char *delim, char **rkey)
Read a key from a string.
Definition: opt.c:1449
double value_max
Definition: opt.h:314
const AVClass * av_opt_child_class_next(const AVClass *parent, const AVClass *prev)
Iterate over potential AVOptions-enabled children of parent.
Definition: opt.c:1652
void av_opt_set_defaults(void *s)
Set the values of all AVOption fields to their default values.
Definition: opt.c:1291
static int opt_size(enum AVOptionType type)
Definition: opt.c:1667
int num
Numerator.
Definition: rational.h:59
#define AV_OPT_FLAG_AUDIO_PARAM
Definition: opt.h:281
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 flag
Definition: cpu.c:34
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:1412
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:573
Use backslash escaping.
Definition: avstring.h:315
void * av_mallocz(size_t size)
Allocate a memory block with alignment suitable for all memory accesses (including vectors if availab...
Definition: mem.c:222
int av_opt_get_q(void *obj, const char *name, int search_flags, AVRational *out_val)
Definition: opt.c:899
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:1980
static void opt_list(void *obj, void *av_log_obj, const char *unit, int req_flags, int rej_flags)
Definition: opt.c:1091
int av_opt_set_dict_val(void *obj, const char *name, const AVDictionary *val, int search_flags)
Definition: opt.c:697
#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:1968
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:1871
int av_opt_get_video_rate(void *obj, const char *name, int search_flags, AVRational *out_val)
Definition: opt.c:933
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:1492
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:949
Public dictionary API.
const char * name
Definition: opt.h:247
Accept to parse a value without a key; the key will then be returned as NULL.
Definition: opt.h:530
#define WHITESPACES
Definition: opt.c:1432
uint8_t
AVOptionRange ** range
Array of option ranges.
Definition: opt.h:361
#define av_malloc(s)
class_name
Definition: libkvazaar.c:280
const char * help
short English help text
Definition: opt.h:253
AVOptions.
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:1057
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:563
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:319
static int flags
Definition: log.c:57
ptrdiff_t size
Definition: opengl_enc.c:101
const OptionDef options[]
Definition: ffserver.c:3952
#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:855
int av_opt_set_video_rate(void *obj, const char *name, AVRational val, int search_flags)
Definition: opt.c:625
#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:27
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:967
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:726
int av_opt_set_pixel_fmt(void *obj, const char *name, enum AVPixelFormat fmt, int search_flags)
Definition: opt.c:671
#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:1659
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:293
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:558
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
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:269
#define FFMAX(a, b)
Definition: common.h:94
#define fail()
Definition: checkasm.h:90
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:1594
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:972
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:308
#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:557
const char * class
Definition: pixdesc_query.c:24
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:301
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:1378
double component_min
Value's component range.
Definition: opt.h:319
int av_opt_set_channel_layout(void *obj, const char *name, int64_t cl, int search_flags)
Definition: opt.c:681
double min
minimum valid value for the option
Definition: opt.h:272
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:1296
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:1564
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:1780
#define INFINITY
Definition: math.h:27
#define AVERROR_PATCHWELCOME
Not yet implemented in FFmpeg, patches welcome.
Definition: error.h:62
int is_range
Range flag.
Definition: opt.h:324
int av_opt_get_int(void *obj, const char *name, int search_flags, int64_t *out_val)
Definition: opt.c:875
static void log_value(void *av_log_obj, int level, double d)
Definition: opt.c:1024
#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:642
void av_opt_freep_ranges(AVOptionRanges **rangesp)
Free an AVOptionRanges struct and set it to NULL.
Definition: opt.c:1852
char * av_strdup(const char *s)
Duplicate a string.
Definition: mem.c:237
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:1589
static int set_number(void *obj, const char *name, double num, int den, int64_t intnum, int search_flags)
Definition: opt.c:542
int av_opt_show2(void *obj, void *av_log_obj, int req_flags, int rej_flags)
Show the obj options.
Definition: opt.c:1279
#define AV_OPT_FLAG_VIDEO_PARAM
Definition: opt.h:282
static void format_duration(char *buf, size_t size, int64_t d)
Definition: opt.c:716
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:526
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:977
#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:572
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:1544
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:1759
double value_min
Value range.
Definition: opt.h:314
common internal and external API header
if(ret< 0)
Definition: vf_mcdeint.c:282
#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:887
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:1702
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:566
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:365
List of AVOptionRange structs.
Definition: opt.h:330
int av_opt_get(void *obj, const char *name, int search_flags, uint8_t **out_val)
Definition: opt.c:751
#define av_free(p)
#define AV_OPT_SERIALIZE_SKIP_DEFAULTS
Serialize options that are not set to default values only.
Definition: opt.h:840
#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
#define NAN
Definition: math.h:28
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:1470
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:292
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:1011
#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:317
#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:841
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:1600
static const char *const const_names[]
Definition: eval.c:33
enum AVPixelFormat av_get_pix_fmt(const char *name)
Return the pixel format corresponding to name.
Definition: pixdesc.c:2261
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:2249
int av_opt_set_sample_fmt(void *obj, const char *name, enum AVSampleFormat fmt, int search_flags)
Definition: opt.c:676
#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:579
float min
AVPixelFormat
Pixel format.
Definition: pixfmt.h:60
int av_opt_set_image_size(void *obj, const char *name, int w, int h, int search_flags)
Definition: opt.c:603
int av_opt_set(void *obj, const char *name, const char *val, int search_flags)
Definition: opt.c:449
union AVOption::@251 default_val
the default value for scalar options
static int is_key_char(char c)
Definition: opt.c:1434
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:369
int av_opt_get_image_size(void *obj, const char *name, int search_flags, int *w_out, int *h_out)
Definition: opt.c:915
static uint8_t tmp[11]
Definition: aes_ctr.c:26