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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  (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  return 0;
316 }
317 
318 static int set_string_image_size(void *obj, const AVOption *o, const char *val, int *dst)
319 {
320  int ret;
321 
322  if (!val || !strcmp(val, "none")) {
323  dst[0] =
324  dst[1] = 0;
325  return 0;
326  }
327  ret = av_parse_video_size(dst, dst + 1, val);
328  if (ret < 0)
329  av_log(obj, AV_LOG_ERROR, "Unable to parse option value \"%s\" as image size\n", val);
330  return ret;
331 }
332 
333 static int set_string_video_rate(void *obj, const AVOption *o, const char *val, AVRational *dst)
334 {
335  int ret;
336  if (!val) {
337  ret = AVERROR(EINVAL);
338  } else {
339  ret = av_parse_video_rate(dst, val);
340  }
341  if (ret < 0)
342  av_log(obj, AV_LOG_ERROR, "Unable to parse option value \"%s\" as video rate\n", val);
343  return ret;
344 }
345 
346 static int set_string_color(void *obj, const AVOption *o, const char *val, uint8_t *dst)
347 {
348  int ret;
349 
350  if (!val) {
351  return 0;
352  } else {
353  ret = av_parse_color(dst, val, -1, obj);
354  if (ret < 0)
355  av_log(obj, AV_LOG_ERROR, "Unable to parse option value \"%s\" as color\n", val);
356  return ret;
357  }
358  return 0;
359 }
360 
361 static const char *get_bool_name(int val)
362 {
363  if (val < 0)
364  return "auto";
365  return val ? "true" : "false";
366 }
367 
368 static int set_string_bool(void *obj, const AVOption *o, const char *val, int *dst)
369 {
370  int n;
371 
372  if (!val)
373  return 0;
374 
375  if (!strcmp(val, "auto")) {
376  n = -1;
377  } else if (av_match_name(val, "true,y,yes,enable,enabled,on")) {
378  n = 1;
379  } else if (av_match_name(val, "false,n,no,disable,disabled,off")) {
380  n = 0;
381  } else {
382  char *end = NULL;
383  n = strtol(val, &end, 10);
384  if (val + strlen(val) != end)
385  goto fail;
386  }
387 
388  if (n < o->min || n > o->max)
389  goto fail;
390 
391  *dst = n;
392  return 0;
393 
394 fail:
395  av_log(obj, AV_LOG_ERROR, "Unable to parse option value \"%s\" as boolean\n", val);
396  return AVERROR(EINVAL);
397 }
398 
399 static int set_string_fmt(void *obj, const AVOption *o, const char *val, uint8_t *dst,
400  int fmt_nb, int ((*get_fmt)(const char *)), const char *desc)
401 {
402  int fmt, min, max;
403 
404  if (!val || !strcmp(val, "none")) {
405  fmt = -1;
406  } else {
407  fmt = get_fmt(val);
408  if (fmt == -1) {
409  char *tail;
410  fmt = strtol(val, &tail, 0);
411  if (*tail || (unsigned)fmt >= fmt_nb) {
412  av_log(obj, AV_LOG_ERROR,
413  "Unable to parse option value \"%s\" as %s\n", val, desc);
414  return AVERROR(EINVAL);
415  }
416  }
417  }
418 
419  min = FFMAX(o->min, -1);
420  max = FFMIN(o->max, fmt_nb-1);
421 
422  // hack for compatibility with old ffmpeg
423  if(min == 0 && max == 0) {
424  min = -1;
425  max = fmt_nb-1;
426  }
427 
428  if (fmt < min || fmt > max) {
429  av_log(obj, AV_LOG_ERROR,
430  "Value %d for parameter '%s' out of %s format range [%d - %d]\n",
431  fmt, o->name, desc, min, max);
432  return AVERROR(ERANGE);
433  }
434 
435  *(int *)dst = fmt;
436  return 0;
437 }
438 
439 static int set_string_pixel_fmt(void *obj, const AVOption *o, const char *val, uint8_t *dst)
440 {
441  return set_string_fmt(obj, o, val, dst,
442  AV_PIX_FMT_NB, av_get_pix_fmt, "pixel format");
443 }
444 
445 static int set_string_sample_fmt(void *obj, const AVOption *o, const char *val, uint8_t *dst)
446 {
447  return set_string_fmt(obj, o, val, dst,
448  AV_SAMPLE_FMT_NB, av_get_sample_fmt, "sample format");
449 }
450 
451 int av_opt_set(void *obj, const char *name, const char *val, int search_flags)
452 {
453  int ret = 0;
454  void *dst, *target_obj;
455  const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
456  if (!o || !target_obj)
458  if (!val && (o->type != AV_OPT_TYPE_STRING &&
463  return AVERROR(EINVAL);
464 
465  if (o->flags & AV_OPT_FLAG_READONLY)
466  return AVERROR(EINVAL);
467 
468  dst = ((uint8_t *)target_obj) + o->offset;
469  switch (o->type) {
470  case AV_OPT_TYPE_BOOL:
471  return set_string_bool(obj, o, val, dst);
472  case AV_OPT_TYPE_STRING:
473  return set_string(obj, o, val, dst);
474  case AV_OPT_TYPE_BINARY:
475  return set_string_binary(obj, o, val, dst);
476  case AV_OPT_TYPE_FLAGS:
477  case AV_OPT_TYPE_INT:
478  case AV_OPT_TYPE_INT64:
479  case AV_OPT_TYPE_UINT64:
480  case AV_OPT_TYPE_FLOAT:
481  case AV_OPT_TYPE_DOUBLE:
483  return set_string_number(obj, target_obj, o, val, dst);
485  return set_string_image_size(obj, o, val, dst);
486  case AV_OPT_TYPE_VIDEO_RATE: {
487  AVRational tmp;
488  ret = set_string_video_rate(obj, o, val, &tmp);
489  if (ret < 0)
490  return ret;
491  return write_number(obj, o, dst, 1, tmp.den, tmp.num);
492  }
494  return set_string_pixel_fmt(obj, o, val, dst);
496  return set_string_sample_fmt(obj, o, val, dst);
498  if (!val) {
499  *(int64_t *)dst = 0;
500  return 0;
501  } else {
502  if ((ret = av_parse_time(dst, val, 1)) < 0)
503  av_log(obj, AV_LOG_ERROR, "Unable to parse option value \"%s\" as duration\n", val);
504  return ret;
505  }
506  break;
507  case AV_OPT_TYPE_COLOR:
508  return set_string_color(obj, o, val, dst);
510  if (!val || !strcmp(val, "none")) {
511  *(int64_t *)dst = 0;
512  } else {
513  int64_t cl = av_get_channel_layout(val);
514  if (!cl) {
515  av_log(obj, AV_LOG_ERROR, "Unable to parse option value \"%s\" as channel layout\n", val);
516  ret = AVERROR(EINVAL);
517  }
518  *(int64_t *)dst = cl;
519  return ret;
520  }
521  break;
522  }
523 
524  av_log(obj, AV_LOG_ERROR, "Invalid option type.\n");
525  return AVERROR(EINVAL);
526 }
527 
528 #define OPT_EVAL_NUMBER(name, opttype, vartype) \
529 int av_opt_eval_ ## name(void *obj, const AVOption *o, \
530  const char *val, vartype *name ## _out) \
531 { \
532  if (!o || o->type != opttype || o->flags & AV_OPT_FLAG_READONLY) \
533  return AVERROR(EINVAL); \
534  return set_string_number(obj, obj, o, val, name ## _out); \
535 }
536 
539 OPT_EVAL_NUMBER(int64, AV_OPT_TYPE_INT64, int64_t)
540 OPT_EVAL_NUMBER(float, AV_OPT_TYPE_FLOAT, float)
541 OPT_EVAL_NUMBER(double, AV_OPT_TYPE_DOUBLE, double)
543 
544 static int set_number(void *obj, const char *name, double num, int den, int64_t intnum,
545  int search_flags)
546 {
547  void *dst, *target_obj;
548  const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
549 
550  if (!o || !target_obj)
552 
553  if (o->flags & AV_OPT_FLAG_READONLY)
554  return AVERROR(EINVAL);
555 
556  dst = ((uint8_t *)target_obj) + o->offset;
557  return write_number(obj, o, dst, num, den, intnum);
558 }
559 
560 int av_opt_set_int(void *obj, const char *name, int64_t val, int search_flags)
561 {
562  return set_number(obj, name, 1, 1, val, search_flags);
563 }
564 
565 int av_opt_set_double(void *obj, const char *name, double val, int search_flags)
566 {
567  return set_number(obj, name, val, 1, 1, search_flags);
568 }
569 
570 int av_opt_set_q(void *obj, const char *name, AVRational val, int search_flags)
571 {
572  return set_number(obj, name, val.num, val.den, 1, search_flags);
573 }
574 
575 int av_opt_set_bin(void *obj, const char *name, const uint8_t *val, int len, int search_flags)
576 {
577  void *target_obj;
578  const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
579  uint8_t *ptr;
580  uint8_t **dst;
581  int *lendst;
582 
583  if (!o || !target_obj)
585 
587  return AVERROR(EINVAL);
588 
589  ptr = len ? av_malloc(len) : NULL;
590  if (len && !ptr)
591  return AVERROR(ENOMEM);
592 
593  dst = (uint8_t **)(((uint8_t *)target_obj) + o->offset);
594  lendst = (int *)(dst + 1);
595 
596  av_free(*dst);
597  *dst = ptr;
598  *lendst = len;
599  if (len)
600  memcpy(ptr, val, len);
601 
602  return 0;
603 }
604 
605 int av_opt_set_image_size(void *obj, const char *name, int w, int h, int search_flags)
606 {
607  void *target_obj;
608  const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
609 
610  if (!o || !target_obj)
612  if (o->type != AV_OPT_TYPE_IMAGE_SIZE) {
613  av_log(obj, AV_LOG_ERROR,
614  "The value set by option '%s' is not an image size.\n", o->name);
615  return AVERROR(EINVAL);
616  }
617  if (w<0 || h<0) {
618  av_log(obj, AV_LOG_ERROR,
619  "Invalid negative size value %dx%d for size '%s'\n", w, h, o->name);
620  return AVERROR(EINVAL);
621  }
622  *(int *)(((uint8_t *)target_obj) + o->offset) = w;
623  *(int *)(((uint8_t *)target_obj+sizeof(int)) + o->offset) = h;
624  return 0;
625 }
626 
627 int av_opt_set_video_rate(void *obj, const char *name, AVRational val, int search_flags)
628 {
629  void *target_obj;
630  const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
631 
632  if (!o || !target_obj)
634  if (o->type != AV_OPT_TYPE_VIDEO_RATE) {
635  av_log(obj, AV_LOG_ERROR,
636  "The value set by option '%s' is not a video rate.\n", o->name);
637  return AVERROR(EINVAL);
638  }
639  if (val.num <= 0 || val.den <= 0)
640  return AVERROR(EINVAL);
641  return set_number(obj, name, val.num, val.den, 1, search_flags);
642 }
643 
644 static int set_format(void *obj, const char *name, int fmt, int search_flags,
645  enum AVOptionType type, const char *desc, int nb_fmts)
646 {
647  void *target_obj;
648  const AVOption *o = av_opt_find2(obj, name, NULL, 0,
649  search_flags, &target_obj);
650  int min, max;
651 
652  if (!o || !target_obj)
654  if (o->type != type) {
655  av_log(obj, AV_LOG_ERROR,
656  "The value set by option '%s' is not a %s format", name, desc);
657  return AVERROR(EINVAL);
658  }
659 
660  min = FFMAX(o->min, -1);
661  max = FFMIN(o->max, nb_fmts-1);
662 
663  if (fmt < min || fmt > max) {
664  av_log(obj, AV_LOG_ERROR,
665  "Value %d for parameter '%s' out of %s format range [%d - %d]\n",
666  fmt, name, desc, min, max);
667  return AVERROR(ERANGE);
668  }
669  *(int *)(((uint8_t *)target_obj) + o->offset) = fmt;
670  return 0;
671 }
672 
673 int av_opt_set_pixel_fmt(void *obj, const char *name, enum AVPixelFormat fmt, int search_flags)
674 {
675  return set_format(obj, name, fmt, search_flags, AV_OPT_TYPE_PIXEL_FMT, "pixel", AV_PIX_FMT_NB);
676 }
677 
678 int av_opt_set_sample_fmt(void *obj, const char *name, enum AVSampleFormat fmt, int search_flags)
679 {
680  return set_format(obj, name, fmt, search_flags, AV_OPT_TYPE_SAMPLE_FMT, "sample", AV_SAMPLE_FMT_NB);
681 }
682 
683 int av_opt_set_channel_layout(void *obj, const char *name, int64_t cl, int search_flags)
684 {
685  void *target_obj;
686  const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
687 
688  if (!o || !target_obj)
690  if (o->type != AV_OPT_TYPE_CHANNEL_LAYOUT) {
691  av_log(obj, AV_LOG_ERROR,
692  "The value set by option '%s' is not a channel layout.\n", o->name);
693  return AVERROR(EINVAL);
694  }
695  *(int64_t *)(((uint8_t *)target_obj) + o->offset) = cl;
696  return 0;
697 }
698 
699 int av_opt_set_dict_val(void *obj, const char *name, const AVDictionary *val,
700  int search_flags)
701 {
702  void *target_obj;
703  AVDictionary **dst;
704  const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
705 
706  if (!o || !target_obj)
708  if (o->flags & AV_OPT_FLAG_READONLY)
709  return AVERROR(EINVAL);
710 
711  dst = (AVDictionary **)(((uint8_t *)target_obj) + o->offset);
712  av_dict_free(dst);
713  av_dict_copy(dst, val, 0);
714 
715  return 0;
716 }
717 
718 static void format_duration(char *buf, size_t size, int64_t d)
719 {
720  char *e;
721 
722  av_assert0(size >= 25);
723  if (d < 0 && d != INT64_MIN) {
724  *(buf++) = '-';
725  size--;
726  d = -d;
727  }
728  if (d == INT64_MAX)
729  snprintf(buf, size, "INT64_MAX");
730  else if (d == INT64_MIN)
731  snprintf(buf, size, "INT64_MIN");
732  else if (d > (int64_t)3600*1000000)
733  snprintf(buf, size, "%"PRId64":%02d:%02d.%06d", d / 3600000000,
734  (int)((d / 60000000) % 60),
735  (int)((d / 1000000) % 60),
736  (int)(d % 1000000));
737  else if (d > 60*1000000)
738  snprintf(buf, size, "%d:%02d.%06d",
739  (int)(d / 60000000),
740  (int)((d / 1000000) % 60),
741  (int)(d % 1000000));
742  else
743  snprintf(buf, size, "%d.%06d",
744  (int)(d / 1000000),
745  (int)(d % 1000000));
746  e = buf + strlen(buf);
747  while (e > buf && e[-1] == '0')
748  *(--e) = 0;
749  if (e > buf && e[-1] == '.')
750  *(--e) = 0;
751 }
752 
753 int av_opt_get(void *obj, const char *name, int search_flags, uint8_t **out_val)
754 {
755  void *dst, *target_obj;
756  const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
757  uint8_t *bin, buf[128];
758  int len, i, ret;
759  int64_t i64;
760 
761  if (!o || !target_obj || (o->offset<=0 && o->type != AV_OPT_TYPE_CONST))
763 
764  dst = (uint8_t *)target_obj + o->offset;
765 
766  buf[0] = 0;
767  switch (o->type) {
768  case AV_OPT_TYPE_BOOL:
769  ret = snprintf(buf, sizeof(buf), "%s", (char *)av_x_if_null(get_bool_name(*(int *)dst), "invalid"));
770  break;
771  case AV_OPT_TYPE_FLAGS:
772  ret = snprintf(buf, sizeof(buf), "0x%08X", *(int *)dst);
773  break;
774  case AV_OPT_TYPE_INT:
775  ret = snprintf(buf, sizeof(buf), "%d", *(int *)dst);
776  break;
777  case AV_OPT_TYPE_INT64:
778  ret = snprintf(buf, sizeof(buf), "%"PRId64, *(int64_t *)dst);
779  break;
780  case AV_OPT_TYPE_UINT64:
781  ret = snprintf(buf, sizeof(buf), "%"PRIu64, *(uint64_t *)dst);
782  break;
783  case AV_OPT_TYPE_FLOAT:
784  ret = snprintf(buf, sizeof(buf), "%f", *(float *)dst);
785  break;
786  case AV_OPT_TYPE_DOUBLE:
787  ret = snprintf(buf, sizeof(buf), "%f", *(double *)dst);
788  break;
791  ret = snprintf(buf, sizeof(buf), "%d/%d", ((AVRational *)dst)->num, ((AVRational *)dst)->den);
792  break;
793  case AV_OPT_TYPE_CONST:
794  ret = snprintf(buf, sizeof(buf), "%f", o->default_val.dbl);
795  break;
796  case AV_OPT_TYPE_STRING:
797  if (*(uint8_t **)dst) {
798  *out_val = av_strdup(*(uint8_t **)dst);
799  } else if (search_flags & AV_OPT_ALLOW_NULL) {
800  *out_val = NULL;
801  return 0;
802  } else {
803  *out_val = av_strdup("");
804  }
805  return *out_val ? 0 : AVERROR(ENOMEM);
806  case AV_OPT_TYPE_BINARY:
807  if (!*(uint8_t **)dst && (search_flags & AV_OPT_ALLOW_NULL)) {
808  *out_val = NULL;
809  return 0;
810  }
811  len = *(int *)(((uint8_t *)dst) + sizeof(uint8_t *));
812  if ((uint64_t)len * 2 + 1 > INT_MAX)
813  return AVERROR(EINVAL);
814  if (!(*out_val = av_malloc(len * 2 + 1)))
815  return AVERROR(ENOMEM);
816  if (!len) {
817  *out_val[0] = '\0';
818  return 0;
819  }
820  bin = *(uint8_t **)dst;
821  for (i = 0; i < len; i++)
822  snprintf(*out_val + i * 2, 3, "%02X", bin[i]);
823  return 0;
825  ret = snprintf(buf, sizeof(buf), "%dx%d", ((int *)dst)[0], ((int *)dst)[1]);
826  break;
828  ret = snprintf(buf, sizeof(buf), "%s", (char *)av_x_if_null(av_get_pix_fmt_name(*(enum AVPixelFormat *)dst), "none"));
829  break;
831  ret = snprintf(buf, sizeof(buf), "%s", (char *)av_x_if_null(av_get_sample_fmt_name(*(enum AVSampleFormat *)dst), "none"));
832  break;
834  i64 = *(int64_t *)dst;
835  format_duration(buf, sizeof(buf), i64);
836  ret = strlen(buf); // no overflow possible, checked by an assert
837  break;
838  case AV_OPT_TYPE_COLOR:
839  ret = snprintf(buf, sizeof(buf), "0x%02x%02x%02x%02x",
840  (int)((uint8_t *)dst)[0], (int)((uint8_t *)dst)[1],
841  (int)((uint8_t *)dst)[2], (int)((uint8_t *)dst)[3]);
842  break;
844  i64 = *(int64_t *)dst;
845  ret = snprintf(buf, sizeof(buf), "0x%"PRIx64, i64);
846  break;
847  default:
848  return AVERROR(EINVAL);
849  }
850 
851  if (ret >= sizeof(buf))
852  return AVERROR(EINVAL);
853  *out_val = av_strdup(buf);
854  return *out_val ? 0 : AVERROR(ENOMEM);
855 }
856 
857 static int get_number(void *obj, const char *name, const AVOption **o_out, double *num, int *den, int64_t *intnum,
858  int search_flags)
859 {
860  void *dst, *target_obj;
861  const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
862  if (!o || !target_obj)
863  goto error;
864 
865  dst = ((uint8_t *)target_obj) + o->offset;
866 
867  if (o_out) *o_out= o;
868 
869  return read_number(o, dst, num, den, intnum);
870 
871 error:
872  *den =
873  *intnum = 0;
874  return -1;
875 }
876 
877 int av_opt_get_int(void *obj, const char *name, int search_flags, int64_t *out_val)
878 {
879  int64_t intnum = 1;
880  double num = 1;
881  int ret, den = 1;
882 
883  if ((ret = get_number(obj, name, NULL, &num, &den, &intnum, search_flags)) < 0)
884  return ret;
885  *out_val = num * intnum / den;
886  return 0;
887 }
888 
889 int av_opt_get_double(void *obj, const char *name, int search_flags, double *out_val)
890 {
891  int64_t intnum = 1;
892  double num = 1;
893  int ret, den = 1;
894 
895  if ((ret = get_number(obj, name, NULL, &num, &den, &intnum, search_flags)) < 0)
896  return ret;
897  *out_val = num * intnum / den;
898  return 0;
899 }
900 
901 int av_opt_get_q(void *obj, const char *name, int search_flags, AVRational *out_val)
902 {
903  int64_t intnum = 1;
904  double num = 1;
905  int ret, den = 1;
906 
907  if ((ret = get_number(obj, name, NULL, &num, &den, &intnum, search_flags)) < 0)
908  return ret;
909 
910  if (num == 1.0 && (int)intnum == intnum)
911  *out_val = (AVRational){intnum, den};
912  else
913  *out_val = av_d2q(num*intnum/den, 1<<24);
914  return 0;
915 }
916 
917 int av_opt_get_image_size(void *obj, const char *name, int search_flags, int *w_out, int *h_out)
918 {
919  void *dst, *target_obj;
920  const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
921  if (!o || !target_obj)
923  if (o->type != AV_OPT_TYPE_IMAGE_SIZE) {
924  av_log(obj, AV_LOG_ERROR,
925  "The value for option '%s' is not an image size.\n", name);
926  return AVERROR(EINVAL);
927  }
928 
929  dst = ((uint8_t*)target_obj) + o->offset;
930  if (w_out) *w_out = *(int *)dst;
931  if (h_out) *h_out = *((int *)dst+1);
932  return 0;
933 }
934 
935 int av_opt_get_video_rate(void *obj, const char *name, int search_flags, AVRational *out_val)
936 {
937  int64_t intnum = 1;
938  double num = 1;
939  int ret, den = 1;
940 
941  if ((ret = get_number(obj, name, NULL, &num, &den, &intnum, search_flags)) < 0)
942  return ret;
943 
944  if (num == 1.0 && (int)intnum == intnum)
945  *out_val = (AVRational) { intnum, den };
946  else
947  *out_val = av_d2q(num * intnum / den, 1 << 24);
948  return 0;
949 }
950 
951 static int get_format(void *obj, const char *name, int search_flags, int *out_fmt,
952  enum AVOptionType type, const char *desc)
953 {
954  void *dst, *target_obj;
955  const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
956  if (!o || !target_obj)
958  if (o->type != type) {
959  av_log(obj, AV_LOG_ERROR,
960  "The value for option '%s' is not a %s format.\n", desc, name);
961  return AVERROR(EINVAL);
962  }
963 
964  dst = ((uint8_t*)target_obj) + o->offset;
965  *out_fmt = *(int *)dst;
966  return 0;
967 }
968 
969 int av_opt_get_pixel_fmt(void *obj, const char *name, int search_flags, enum AVPixelFormat *out_fmt)
970 {
971  return get_format(obj, name, search_flags, out_fmt, AV_OPT_TYPE_PIXEL_FMT, "pixel");
972 }
973 
974 int av_opt_get_sample_fmt(void *obj, const char *name, int search_flags, enum AVSampleFormat *out_fmt)
975 {
976  return get_format(obj, name, search_flags, out_fmt, AV_OPT_TYPE_SAMPLE_FMT, "sample");
977 }
978 
979 int av_opt_get_channel_layout(void *obj, const char *name, int search_flags, int64_t *cl)
980 {
981  void *dst, *target_obj;
982  const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
983  if (!o || !target_obj)
985  if (o->type != AV_OPT_TYPE_CHANNEL_LAYOUT) {
986  av_log(obj, AV_LOG_ERROR,
987  "The value for option '%s' is not a channel layout.\n", name);
988  return AVERROR(EINVAL);
989  }
990 
991  dst = ((uint8_t*)target_obj) + o->offset;
992  *cl = *(int64_t *)dst;
993  return 0;
994 }
995 
996 int av_opt_get_dict_val(void *obj, const char *name, int search_flags, AVDictionary **out_val)
997 {
998  void *target_obj;
999  AVDictionary *src;
1000  const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
1001 
1002  if (!o || !target_obj)
1003  return AVERROR_OPTION_NOT_FOUND;
1004  if (o->type != AV_OPT_TYPE_DICT)
1005  return AVERROR(EINVAL);
1006 
1007  src = *(AVDictionary **)(((uint8_t *)target_obj) + o->offset);
1008  av_dict_copy(out_val, src, 0);
1009 
1010  return 0;
1011 }
1012 
1013 int av_opt_flag_is_set(void *obj, const char *field_name, const char *flag_name)
1014 {
1015  const AVOption *field = av_opt_find(obj, field_name, NULL, 0, 0);
1016  const AVOption *flag = av_opt_find(obj, flag_name,
1017  field ? field->unit : NULL, 0, 0);
1018  int64_t res;
1019 
1020  if (!field || !flag || flag->type != AV_OPT_TYPE_CONST ||
1021  av_opt_get_int(obj, field_name, 0, &res) < 0)
1022  return 0;
1023  return res & flag->default_val.i64;
1024 }
1025 
1026 static void log_value(void *av_log_obj, int level, double d)
1027 {
1028  if (d == INT_MAX) {
1029  av_log(av_log_obj, level, "INT_MAX");
1030  } else if (d == INT_MIN) {
1031  av_log(av_log_obj, level, "INT_MIN");
1032  } else if (d == UINT32_MAX) {
1033  av_log(av_log_obj, level, "UINT32_MAX");
1034  } else if (d == (double)INT64_MAX) {
1035  av_log(av_log_obj, level, "I64_MAX");
1036  } else if (d == INT64_MIN) {
1037  av_log(av_log_obj, level, "I64_MIN");
1038  } else if (d == FLT_MAX) {
1039  av_log(av_log_obj, level, "FLT_MAX");
1040  } else if (d == FLT_MIN) {
1041  av_log(av_log_obj, level, "FLT_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 == DBL_MAX) {
1047  av_log(av_log_obj, level, "DBL_MAX");
1048  } else if (d == DBL_MIN) {
1049  av_log(av_log_obj, level, "DBL_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 {
1055  av_log(av_log_obj, level, "%g", d);
1056  }
1057 }
1058 
1059 static const char *get_opt_const_name(void *obj, const char *unit, int64_t value)
1060 {
1061  const AVOption *opt = NULL;
1062 
1063  if (!unit)
1064  return NULL;
1065  while ((opt = av_opt_next(obj, opt)))
1066  if (opt->type == AV_OPT_TYPE_CONST && !strcmp(opt->unit, unit) &&
1067  opt->default_val.i64 == value)
1068  return opt->name;
1069  return NULL;
1070 }
1071 
1072 static char *get_opt_flags_string(void *obj, const char *unit, int64_t value)
1073 {
1074  const AVOption *opt = NULL;
1075  char flags[512];
1076 
1077  flags[0] = 0;
1078  if (!unit)
1079  return NULL;
1080  while ((opt = av_opt_next(obj, opt))) {
1081  if (opt->type == AV_OPT_TYPE_CONST && !strcmp(opt->unit, unit) &&
1082  opt->default_val.i64 & value) {
1083  if (flags[0])
1084  av_strlcatf(flags, sizeof(flags), "+");
1085  av_strlcatf(flags, sizeof(flags), "%s", opt->name);
1086  }
1087  }
1088  if (flags[0])
1089  return av_strdup(flags);
1090  return NULL;
1091 }
1092 
1093 static void opt_list(void *obj, void *av_log_obj, const char *unit,
1094  int req_flags, int rej_flags)
1095 {
1096  const AVOption *opt = NULL;
1097  AVOptionRanges *r;
1098  int i;
1099 
1100  while ((opt = av_opt_next(obj, opt))) {
1101  if (!(opt->flags & req_flags) || (opt->flags & rej_flags))
1102  continue;
1103 
1104  /* Don't print CONST's on level one.
1105  * Don't print anything but CONST's on level two.
1106  * Only print items from the requested unit.
1107  */
1108  if (!unit && opt->type == AV_OPT_TYPE_CONST)
1109  continue;
1110  else if (unit && opt->type != AV_OPT_TYPE_CONST)
1111  continue;
1112  else if (unit && opt->type == AV_OPT_TYPE_CONST && strcmp(unit, opt->unit))
1113  continue;
1114  else if (unit && opt->type == AV_OPT_TYPE_CONST)
1115  av_log(av_log_obj, AV_LOG_INFO, " %-15s ", opt->name);
1116  else
1117  av_log(av_log_obj, AV_LOG_INFO, " %s%-17s ",
1118  (opt->flags & AV_OPT_FLAG_FILTERING_PARAM) ? "" : "-",
1119  opt->name);
1120 
1121  switch (opt->type) {
1122  case AV_OPT_TYPE_FLAGS:
1123  av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<flags>");
1124  break;
1125  case AV_OPT_TYPE_INT:
1126  av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<int>");
1127  break;
1128  case AV_OPT_TYPE_INT64:
1129  av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<int64>");
1130  break;
1131  case AV_OPT_TYPE_UINT64:
1132  av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<uint64>");
1133  break;
1134  case AV_OPT_TYPE_DOUBLE:
1135  av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<double>");
1136  break;
1137  case AV_OPT_TYPE_FLOAT:
1138  av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<float>");
1139  break;
1140  case AV_OPT_TYPE_STRING:
1141  av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<string>");
1142  break;
1143  case AV_OPT_TYPE_RATIONAL:
1144  av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<rational>");
1145  break;
1146  case AV_OPT_TYPE_BINARY:
1147  av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<binary>");
1148  break;
1150  av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<image_size>");
1151  break;
1153  av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<video_rate>");
1154  break;
1155  case AV_OPT_TYPE_PIXEL_FMT:
1156  av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<pix_fmt>");
1157  break;
1159  av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<sample_fmt>");
1160  break;
1161  case AV_OPT_TYPE_DURATION:
1162  av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<duration>");
1163  break;
1164  case AV_OPT_TYPE_COLOR:
1165  av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<color>");
1166  break;
1168  av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<channel_layout>");
1169  break;
1170  case AV_OPT_TYPE_BOOL:
1171  av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<boolean>");
1172  break;
1173  case AV_OPT_TYPE_CONST:
1174  default:
1175  av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "");
1176  break;
1177  }
1178  av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_ENCODING_PARAM) ? 'E' : '.');
1179  av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_DECODING_PARAM) ? 'D' : '.');
1180  av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_FILTERING_PARAM)? 'F' : '.');
1181  av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_VIDEO_PARAM ) ? 'V' : '.');
1182  av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_AUDIO_PARAM ) ? 'A' : '.');
1183  av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_SUBTITLE_PARAM) ? 'S' : '.');
1184  av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_EXPORT) ? 'X' : '.');
1185  av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_READONLY) ? 'R' : '.');
1186 
1187  if (opt->help)
1188  av_log(av_log_obj, AV_LOG_INFO, " %s", opt->help);
1189 
1190  if (av_opt_query_ranges(&r, obj, opt->name, AV_OPT_SEARCH_FAKE_OBJ) >= 0) {
1191  switch (opt->type) {
1192  case AV_OPT_TYPE_INT:
1193  case AV_OPT_TYPE_INT64:
1194  case AV_OPT_TYPE_UINT64:
1195  case AV_OPT_TYPE_DOUBLE:
1196  case AV_OPT_TYPE_FLOAT:
1197  case AV_OPT_TYPE_RATIONAL:
1198  for (i = 0; i < r->nb_ranges; i++) {
1199  av_log(av_log_obj, AV_LOG_INFO, " (from ");
1200  log_value(av_log_obj, AV_LOG_INFO, r->range[i]->value_min);
1201  av_log(av_log_obj, AV_LOG_INFO, " to ");
1202  log_value(av_log_obj, AV_LOG_INFO, r->range[i]->value_max);
1203  av_log(av_log_obj, AV_LOG_INFO, ")");
1204  }
1205  break;
1206  }
1207  av_opt_freep_ranges(&r);
1208  }
1209 
1210  if (opt->type != AV_OPT_TYPE_CONST &&
1211  opt->type != AV_OPT_TYPE_BINARY &&
1212  !((opt->type == AV_OPT_TYPE_COLOR ||
1213  opt->type == AV_OPT_TYPE_IMAGE_SIZE ||
1214  opt->type == AV_OPT_TYPE_STRING ||
1215  opt->type == AV_OPT_TYPE_VIDEO_RATE) &&
1216  !opt->default_val.str)) {
1217  av_log(av_log_obj, AV_LOG_INFO, " (default ");
1218  switch (opt->type) {
1219  case AV_OPT_TYPE_BOOL:
1220  av_log(av_log_obj, AV_LOG_INFO, "%s", (char *)av_x_if_null(get_bool_name(opt->default_val.i64), "invalid"));
1221  break;
1222  case AV_OPT_TYPE_FLAGS: {
1223  char *def_flags = get_opt_flags_string(obj, opt->unit, opt->default_val.i64);
1224  if (def_flags) {
1225  av_log(av_log_obj, AV_LOG_INFO, "%s", def_flags);
1226  av_freep(&def_flags);
1227  } else {
1228  av_log(av_log_obj, AV_LOG_INFO, "%"PRIX64, opt->default_val.i64);
1229  }
1230  break;
1231  }
1232  case AV_OPT_TYPE_DURATION: {
1233  char buf[25];
1234  format_duration(buf, sizeof(buf), opt->default_val.i64);
1235  av_log(av_log_obj, AV_LOG_INFO, "%s", buf);
1236  break;
1237  }
1238  case AV_OPT_TYPE_INT:
1239  case AV_OPT_TYPE_UINT64:
1240  case AV_OPT_TYPE_INT64: {
1241  const char *def_const = get_opt_const_name(obj, opt->unit, opt->default_val.i64);
1242  if (def_const)
1243  av_log(av_log_obj, AV_LOG_INFO, "%s", def_const);
1244  else
1245  log_value(av_log_obj, AV_LOG_INFO, opt->default_val.i64);
1246  break;
1247  }
1248  case AV_OPT_TYPE_DOUBLE:
1249  case AV_OPT_TYPE_FLOAT:
1250  log_value(av_log_obj, AV_LOG_INFO, opt->default_val.dbl);
1251  break;
1252  case AV_OPT_TYPE_RATIONAL: {
1253  AVRational q = av_d2q(opt->default_val.dbl, INT_MAX);
1254  av_log(av_log_obj, AV_LOG_INFO, "%d/%d", q.num, q.den); }
1255  break;
1256  case AV_OPT_TYPE_PIXEL_FMT:
1257  av_log(av_log_obj, AV_LOG_INFO, "%s", (char *)av_x_if_null(av_get_pix_fmt_name(opt->default_val.i64), "none"));
1258  break;
1260  av_log(av_log_obj, AV_LOG_INFO, "%s", (char *)av_x_if_null(av_get_sample_fmt_name(opt->default_val.i64), "none"));
1261  break;
1262  case AV_OPT_TYPE_COLOR:
1264  case AV_OPT_TYPE_STRING:
1266  av_log(av_log_obj, AV_LOG_INFO, "\"%s\"", opt->default_val.str);
1267  break;
1269  av_log(av_log_obj, AV_LOG_INFO, "0x%"PRIx64, opt->default_val.i64);
1270  break;
1271  }
1272  av_log(av_log_obj, AV_LOG_INFO, ")");
1273  }
1274 
1275  av_log(av_log_obj, AV_LOG_INFO, "\n");
1276  if (opt->unit && opt->type != AV_OPT_TYPE_CONST)
1277  opt_list(obj, av_log_obj, opt->unit, req_flags, rej_flags);
1278  }
1279 }
1280 
1281 int av_opt_show2(void *obj, void *av_log_obj, int req_flags, int rej_flags)
1282 {
1283  if (!obj)
1284  return -1;
1285 
1286  av_log(av_log_obj, AV_LOG_INFO, "%s AVOptions:\n", (*(AVClass **)obj)->class_name);
1287 
1288  opt_list(obj, av_log_obj, NULL, req_flags, rej_flags);
1289 
1290  return 0;
1291 }
1292 
1294 {
1295  av_opt_set_defaults2(s, 0, 0);
1296 }
1297 
1298 void av_opt_set_defaults2(void *s, int mask, int flags)
1299 {
1300  const AVOption *opt = NULL;
1301  while ((opt = av_opt_next(s, opt))) {
1302  void *dst = ((uint8_t*)s) + opt->offset;
1303 
1304  if ((opt->flags & mask) != flags)
1305  continue;
1306 
1307  if (opt->flags & AV_OPT_FLAG_READONLY)
1308  continue;
1309 
1310  switch (opt->type) {
1311  case AV_OPT_TYPE_CONST:
1312  /* Nothing to be done here */
1313  break;
1314  case AV_OPT_TYPE_BOOL:
1315  case AV_OPT_TYPE_FLAGS:
1316  case AV_OPT_TYPE_INT:
1317  case AV_OPT_TYPE_INT64:
1318  case AV_OPT_TYPE_UINT64:
1319  case AV_OPT_TYPE_DURATION:
1321  case AV_OPT_TYPE_PIXEL_FMT:
1323  write_number(s, opt, dst, 1, 1, opt->default_val.i64);
1324  break;
1325  case AV_OPT_TYPE_DOUBLE:
1326  case AV_OPT_TYPE_FLOAT: {
1327  double val;
1328  val = opt->default_val.dbl;
1329  write_number(s, opt, dst, val, 1, 1);
1330  }
1331  break;
1332  case AV_OPT_TYPE_RATIONAL: {
1333  AVRational val;
1334  val = av_d2q(opt->default_val.dbl, INT_MAX);
1335  write_number(s, opt, dst, 1, val.den, val.num);
1336  }
1337  break;
1338  case AV_OPT_TYPE_COLOR:
1339  set_string_color(s, opt, opt->default_val.str, dst);
1340  break;
1341  case AV_OPT_TYPE_STRING:
1342  set_string(s, opt, opt->default_val.str, dst);
1343  break;
1345  set_string_image_size(s, opt, opt->default_val.str, dst);
1346  break;
1348  set_string_video_rate(s, opt, opt->default_val.str, dst);
1349  break;
1350  case AV_OPT_TYPE_BINARY:
1351  set_string_binary(s, opt, opt->default_val.str, dst);
1352  break;
1353  case AV_OPT_TYPE_DICT:
1354  /* Cannot set defaults for these types */
1355  break;
1356  default:
1357  av_log(s, AV_LOG_DEBUG, "AVOption type %d of option %s not implemented yet\n",
1358  opt->type, opt->name);
1359  }
1360  }
1361 }
1362 
1363 /**
1364  * Store the value in the field in ctx that is named like key.
1365  * ctx must be an AVClass context, storing is done using AVOptions.
1366  *
1367  * @param buf the string to parse, buf will be updated to point at the
1368  * separator just after the parsed key/value pair
1369  * @param key_val_sep a 0-terminated list of characters used to
1370  * separate key from value
1371  * @param pairs_sep a 0-terminated list of characters used to separate
1372  * two pairs from each other
1373  * @return 0 if the key/value pair has been successfully parsed and
1374  * set, or a negative value corresponding to an AVERROR code in case
1375  * of error:
1376  * AVERROR(EINVAL) if the key/value pair cannot be parsed,
1377  * the error code issued by av_opt_set() if the key/value pair
1378  * cannot be set
1379  */
1380 static int parse_key_value_pair(void *ctx, const char **buf,
1381  const char *key_val_sep, const char *pairs_sep)
1382 {
1383  char *key = av_get_token(buf, key_val_sep);
1384  char *val;
1385  int ret;
1386 
1387  if (!key)
1388  return AVERROR(ENOMEM);
1389 
1390  if (*key && strspn(*buf, key_val_sep)) {
1391  (*buf)++;
1392  val = av_get_token(buf, pairs_sep);
1393  if (!val) {
1394  av_freep(&key);
1395  return AVERROR(ENOMEM);
1396  }
1397  } else {
1398  av_log(ctx, AV_LOG_ERROR, "Missing key or no key/value separator found after key '%s'\n", key);
1399  av_free(key);
1400  return AVERROR(EINVAL);
1401  }
1402 
1403  av_log(ctx, AV_LOG_DEBUG, "Setting entry with key '%s' to value '%s'\n", key, val);
1404 
1405  ret = av_opt_set(ctx, key, val, AV_OPT_SEARCH_CHILDREN);
1406  if (ret == AVERROR_OPTION_NOT_FOUND)
1407  av_log(ctx, AV_LOG_ERROR, "Key '%s' not found.\n", key);
1408 
1409  av_free(key);
1410  av_free(val);
1411  return ret;
1412 }
1413 
1414 int av_set_options_string(void *ctx, const char *opts,
1415  const char *key_val_sep, const char *pairs_sep)
1416 {
1417  int ret, count = 0;
1418 
1419  if (!opts)
1420  return 0;
1421 
1422  while (*opts) {
1423  if ((ret = parse_key_value_pair(ctx, &opts, key_val_sep, pairs_sep)) < 0)
1424  return ret;
1425  count++;
1426 
1427  if (*opts)
1428  opts++;
1429  }
1430 
1431  return count;
1432 }
1433 
1434 #define WHITESPACES " \n\t\r"
1435 
1436 static int is_key_char(char c)
1437 {
1438  return (unsigned)((c | 32) - 'a') < 26 ||
1439  (unsigned)(c - '0') < 10 ||
1440  c == '-' || c == '_' || c == '/' || c == '.';
1441 }
1442 
1443 /**
1444  * Read a key from a string.
1445  *
1446  * The key consists of is_key_char characters and must be terminated by a
1447  * character from the delim string; spaces are ignored.
1448  *
1449  * @return 0 for success (even with ellipsis), <0 for failure
1450  */
1451 static int get_key(const char **ropts, const char *delim, char **rkey)
1452 {
1453  const char *opts = *ropts;
1454  const char *key_start, *key_end;
1455 
1456  key_start = opts += strspn(opts, WHITESPACES);
1457  while (is_key_char(*opts))
1458  opts++;
1459  key_end = opts;
1460  opts += strspn(opts, WHITESPACES);
1461  if (!*opts || !strchr(delim, *opts))
1462  return AVERROR(EINVAL);
1463  opts++;
1464  if (!(*rkey = av_malloc(key_end - key_start + 1)))
1465  return AVERROR(ENOMEM);
1466  memcpy(*rkey, key_start, key_end - key_start);
1467  (*rkey)[key_end - key_start] = 0;
1468  *ropts = opts;
1469  return 0;
1470 }
1471 
1472 int av_opt_get_key_value(const char **ropts,
1473  const char *key_val_sep, const char *pairs_sep,
1474  unsigned flags,
1475  char **rkey, char **rval)
1476 {
1477  int ret;
1478  char *key = NULL, *val;
1479  const char *opts = *ropts;
1480 
1481  if ((ret = get_key(&opts, key_val_sep, &key)) < 0 &&
1482  !(flags & AV_OPT_FLAG_IMPLICIT_KEY))
1483  return AVERROR(EINVAL);
1484  if (!(val = av_get_token(&opts, pairs_sep))) {
1485  av_free(key);
1486  return AVERROR(ENOMEM);
1487  }
1488  *ropts = opts;
1489  *rkey = key;
1490  *rval = val;
1491  return 0;
1492 }
1493 
1494 int av_opt_set_from_string(void *ctx, const char *opts,
1495  const char *const *shorthand,
1496  const char *key_val_sep, const char *pairs_sep)
1497 {
1498  int ret, count = 0;
1499  const char *dummy_shorthand = NULL;
1500  char *av_uninit(parsed_key), *av_uninit(value);
1501  const char *key;
1502 
1503  if (!opts)
1504  return 0;
1505  if (!shorthand)
1506  shorthand = &dummy_shorthand;
1507 
1508  while (*opts) {
1509  ret = av_opt_get_key_value(&opts, key_val_sep, pairs_sep,
1510  *shorthand ? AV_OPT_FLAG_IMPLICIT_KEY : 0,
1511  &parsed_key, &value);
1512  if (ret < 0) {
1513  if (ret == AVERROR(EINVAL))
1514  av_log(ctx, AV_LOG_ERROR, "No option name near '%s'\n", opts);
1515  else
1516  av_log(ctx, AV_LOG_ERROR, "Unable to parse '%s': %s\n", opts,
1517  av_err2str(ret));
1518  return ret;
1519  }
1520  if (*opts)
1521  opts++;
1522  if (parsed_key) {
1523  key = parsed_key;
1524  while (*shorthand) /* discard all remaining shorthand */
1525  shorthand++;
1526  } else {
1527  key = *(shorthand++);
1528  }
1529 
1530  av_log(ctx, AV_LOG_DEBUG, "Setting '%s' to value '%s'\n", key, value);
1531  if ((ret = av_opt_set(ctx, key, value, 0)) < 0) {
1532  if (ret == AVERROR_OPTION_NOT_FOUND)
1533  av_log(ctx, AV_LOG_ERROR, "Option '%s' not found\n", key);
1534  av_free(value);
1535  av_free(parsed_key);
1536  return ret;
1537  }
1538 
1539  av_free(value);
1540  av_free(parsed_key);
1541  count++;
1542  }
1543  return count;
1544 }
1545 
1546 void av_opt_free(void *obj)
1547 {
1548  const AVOption *o = NULL;
1549  while ((o = av_opt_next(obj, o))) {
1550  switch (o->type) {
1551  case AV_OPT_TYPE_STRING:
1552  case AV_OPT_TYPE_BINARY:
1553  av_freep((uint8_t *)obj + o->offset);
1554  break;
1555 
1556  case AV_OPT_TYPE_DICT:
1557  av_dict_free((AVDictionary **)(((uint8_t *)obj) + o->offset));
1558  break;
1559 
1560  default:
1561  break;
1562  }
1563  }
1564 }
1565 
1566 int av_opt_set_dict2(void *obj, AVDictionary **options, int search_flags)
1567 {
1568  AVDictionaryEntry *t = NULL;
1569  AVDictionary *tmp = NULL;
1570  int ret = 0;
1571 
1572  if (!options)
1573  return 0;
1574 
1575  while ((t = av_dict_get(*options, "", t, AV_DICT_IGNORE_SUFFIX))) {
1576  ret = av_opt_set(obj, t->key, t->value, search_flags);
1577  if (ret == AVERROR_OPTION_NOT_FOUND)
1578  ret = av_dict_set(&tmp, t->key, t->value, 0);
1579  if (ret < 0) {
1580  av_log(obj, AV_LOG_ERROR, "Error setting option %s to value %s.\n", t->key, t->value);
1581  av_dict_free(&tmp);
1582  return ret;
1583  }
1584  ret = 0;
1585  }
1586  av_dict_free(options);
1587  *options = tmp;
1588  return ret;
1589 }
1590 
1592 {
1593  return av_opt_set_dict2(obj, options, 0);
1594 }
1595 
1596 const AVOption *av_opt_find(void *obj, const char *name, const char *unit,
1597  int opt_flags, int search_flags)
1598 {
1599  return av_opt_find2(obj, name, unit, opt_flags, search_flags, NULL);
1600 }
1601 
1602 const AVOption *av_opt_find2(void *obj, const char *name, const char *unit,
1603  int opt_flags, int search_flags, void **target_obj)
1604 {
1605  const AVClass *c;
1606  const AVOption *o = NULL;
1607 
1608  if(!obj)
1609  return NULL;
1610 
1611  c= *(AVClass**)obj;
1612 
1613  if (!c)
1614  return NULL;
1615 
1616  if (search_flags & AV_OPT_SEARCH_CHILDREN) {
1617  if (search_flags & AV_OPT_SEARCH_FAKE_OBJ) {
1618  const AVClass *child = NULL;
1619  while (child = av_opt_child_class_next(c, child))
1620  if (o = av_opt_find2(&child, name, unit, opt_flags, search_flags, NULL))
1621  return o;
1622  } else {
1623  void *child = NULL;
1624  while (child = av_opt_child_next(obj, child))
1625  if (o = av_opt_find2(child, name, unit, opt_flags, search_flags, target_obj))
1626  return o;
1627  }
1628  }
1629 
1630  while (o = av_opt_next(obj, o)) {
1631  if (!strcmp(o->name, name) && (o->flags & opt_flags) == opt_flags &&
1632  ((!unit && o->type != AV_OPT_TYPE_CONST) ||
1633  (unit && o->type == AV_OPT_TYPE_CONST && o->unit && !strcmp(o->unit, unit)))) {
1634  if (target_obj) {
1635  if (!(search_flags & AV_OPT_SEARCH_FAKE_OBJ))
1636  *target_obj = obj;
1637  else
1638  *target_obj = NULL;
1639  }
1640  return o;
1641  }
1642  }
1643  return NULL;
1644 }
1645 
1646 void *av_opt_child_next(void *obj, void *prev)
1647 {
1648  const AVClass *c = *(AVClass **)obj;
1649  if (c->child_next)
1650  return c->child_next(obj, prev);
1651  return NULL;
1652 }
1653 
1654 const AVClass *av_opt_child_class_next(const AVClass *parent, const AVClass *prev)
1655 {
1656  if (parent->child_class_next)
1657  return parent->child_class_next(prev);
1658  return NULL;
1659 }
1660 
1661 void *av_opt_ptr(const AVClass *class, void *obj, const char *name)
1662 {
1663  const AVOption *opt= av_opt_find2(&class, name, NULL, 0, AV_OPT_SEARCH_FAKE_OBJ, NULL);
1664  if(!opt)
1665  return NULL;
1666  return (uint8_t*)obj + opt->offset;
1667 }
1668 
1669 static int opt_size(enum AVOptionType type)
1670 {
1671  switch(type) {
1672  case AV_OPT_TYPE_BOOL:
1673  case AV_OPT_TYPE_INT:
1674  case AV_OPT_TYPE_FLAGS:
1675  return sizeof(int);
1676  case AV_OPT_TYPE_DURATION:
1678  case AV_OPT_TYPE_INT64:
1679  case AV_OPT_TYPE_UINT64:
1680  return sizeof(int64_t);
1681  case AV_OPT_TYPE_DOUBLE:
1682  return sizeof(double);
1683  case AV_OPT_TYPE_FLOAT:
1684  return sizeof(float);
1685  case AV_OPT_TYPE_STRING:
1686  return sizeof(uint8_t*);
1688  case AV_OPT_TYPE_RATIONAL:
1689  return sizeof(AVRational);
1690  case AV_OPT_TYPE_BINARY:
1691  return sizeof(uint8_t*) + sizeof(int);
1693  return sizeof(int[2]);
1694  case AV_OPT_TYPE_PIXEL_FMT:
1695  return sizeof(enum AVPixelFormat);
1697  return sizeof(enum AVSampleFormat);
1698  case AV_OPT_TYPE_COLOR:
1699  return 4;
1700  }
1701  return AVERROR(EINVAL);
1702 }
1703 
1704 int av_opt_copy(void *dst, const void *src)
1705 {
1706  const AVOption *o = NULL;
1707  const AVClass *c;
1708  int ret = 0;
1709 
1710  if (!src)
1711  return AVERROR(EINVAL);
1712 
1713  c = *(AVClass **)src;
1714  if (!c || c != *(AVClass **)dst)
1715  return AVERROR(EINVAL);
1716 
1717  while ((o = av_opt_next(src, o))) {
1718  void *field_dst = (uint8_t *)dst + o->offset;
1719  void *field_src = (uint8_t *)src + o->offset;
1720  uint8_t **field_dst8 = (uint8_t **)field_dst;
1721  uint8_t **field_src8 = (uint8_t **)field_src;
1722 
1723  if (o->type == AV_OPT_TYPE_STRING) {
1724  if (*field_dst8 != *field_src8)
1725  av_freep(field_dst8);
1726  *field_dst8 = av_strdup(*field_src8);
1727  if (*field_src8 && !*field_dst8)
1728  ret = AVERROR(ENOMEM);
1729  } else if (o->type == AV_OPT_TYPE_BINARY) {
1730  int len = *(int *)(field_src8 + 1);
1731  if (*field_dst8 != *field_src8)
1732  av_freep(field_dst8);
1733  *field_dst8 = av_memdup(*field_src8, len);
1734  if (len && !*field_dst8) {
1735  ret = AVERROR(ENOMEM);
1736  len = 0;
1737  }
1738  *(int *)(field_dst8 + 1) = len;
1739  } else if (o->type == AV_OPT_TYPE_CONST) {
1740  // do nothing
1741  } else if (o->type == AV_OPT_TYPE_DICT) {
1742  AVDictionary **sdict = (AVDictionary **) field_src;
1743  AVDictionary **ddict = (AVDictionary **) field_dst;
1744  if (*sdict != *ddict)
1745  av_dict_free(ddict);
1746  *ddict = NULL;
1747  av_dict_copy(ddict, *sdict, 0);
1748  if (av_dict_count(*sdict) != av_dict_count(*ddict))
1749  ret = AVERROR(ENOMEM);
1750  } else {
1751  int size = opt_size(o->type);
1752  if (size < 0)
1753  ret = size;
1754  else
1755  memcpy(field_dst, field_src, size);
1756  }
1757  }
1758  return ret;
1759 }
1760 
1761 int av_opt_query_ranges(AVOptionRanges **ranges_arg, void *obj, const char *key, int flags)
1762 {
1763  int ret;
1764  const AVClass *c = *(AVClass**)obj;
1765  int (*callback)(AVOptionRanges **, void *obj, const char *key, int flags) = NULL;
1766 
1767  if (c->version > (52 << 16 | 11 << 8))
1768  callback = c->query_ranges;
1769 
1770  if (!callback)
1772 
1773  ret = callback(ranges_arg, obj, key, flags);
1774  if (ret >= 0) {
1775  if (!(flags & AV_OPT_MULTI_COMPONENT_RANGE))
1776  ret = 1;
1777  (*ranges_arg)->nb_components = ret;
1778  }
1779  return ret;
1780 }
1781 
1782 int av_opt_query_ranges_default(AVOptionRanges **ranges_arg, void *obj, const char *key, int flags)
1783 {
1784  AVOptionRanges *ranges = av_mallocz(sizeof(*ranges));
1785  AVOptionRange **range_array = av_mallocz(sizeof(void*));
1786  AVOptionRange *range = av_mallocz(sizeof(*range));
1787  const AVOption *field = av_opt_find(obj, key, NULL, 0, flags);
1788  int ret;
1789 
1790  *ranges_arg = NULL;
1791 
1792  if (!ranges || !range || !range_array || !field) {
1793  ret = AVERROR(ENOMEM);
1794  goto fail;
1795  }
1796 
1797  ranges->range = range_array;
1798  ranges->range[0] = range;
1799  ranges->nb_ranges = 1;
1800  ranges->nb_components = 1;
1801  range->is_range = 1;
1802  range->value_min = field->min;
1803  range->value_max = field->max;
1804 
1805  switch (field->type) {
1806  case AV_OPT_TYPE_BOOL:
1807  case AV_OPT_TYPE_INT:
1808  case AV_OPT_TYPE_INT64:
1809  case AV_OPT_TYPE_UINT64:
1810  case AV_OPT_TYPE_PIXEL_FMT:
1812  case AV_OPT_TYPE_FLOAT:
1813  case AV_OPT_TYPE_DOUBLE:
1814  case AV_OPT_TYPE_DURATION:
1815  case AV_OPT_TYPE_COLOR:
1817  break;
1818  case AV_OPT_TYPE_STRING:
1819  range->component_min = 0;
1820  range->component_max = 0x10FFFF; // max unicode value
1821  range->value_min = -1;
1822  range->value_max = INT_MAX;
1823  break;
1824  case AV_OPT_TYPE_RATIONAL:
1825  range->component_min = INT_MIN;
1826  range->component_max = INT_MAX;
1827  break;
1829  range->component_min = 0;
1830  range->component_max = INT_MAX/128/8;
1831  range->value_min = 0;
1832  range->value_max = INT_MAX/8;
1833  break;
1835  range->component_min = 1;
1836  range->component_max = INT_MAX;
1837  range->value_min = 1;
1838  range->value_max = INT_MAX;
1839  break;
1840  default:
1841  ret = AVERROR(ENOSYS);
1842  goto fail;
1843  }
1844 
1845  *ranges_arg = ranges;
1846  return 1;
1847 fail:
1848  av_free(ranges);
1849  av_free(range);
1850  av_free(range_array);
1851  return ret;
1852 }
1853 
1855 {
1856  int i;
1857  AVOptionRanges *ranges = *rangesp;
1858 
1859  if (!ranges)
1860  return;
1861 
1862  for (i = 0; i < ranges->nb_ranges * ranges->nb_components; i++) {
1863  AVOptionRange *range = ranges->range[i];
1864  if (range) {
1865  av_freep(&range->str);
1866  av_freep(&ranges->range[i]);
1867  }
1868  }
1869  av_freep(&ranges->range);
1870  av_freep(rangesp);
1871 }
1872 
1873 int av_opt_is_set_to_default(void *obj, const AVOption *o)
1874 {
1875  int64_t i64;
1876  double d, d2;
1877  float f;
1878  AVRational q;
1879  int ret, w, h;
1880  char *str;
1881  void *dst;
1882 
1883  if (!o || !obj)
1884  return AVERROR(EINVAL);
1885 
1886  dst = ((uint8_t*)obj) + o->offset;
1887 
1888  switch (o->type) {
1889  case AV_OPT_TYPE_CONST:
1890  return 1;
1891  case AV_OPT_TYPE_BOOL:
1892  case AV_OPT_TYPE_FLAGS:
1893  case AV_OPT_TYPE_PIXEL_FMT:
1895  case AV_OPT_TYPE_INT:
1897  case AV_OPT_TYPE_DURATION:
1898  case AV_OPT_TYPE_INT64:
1899  case AV_OPT_TYPE_UINT64:
1900  read_number(o, dst, NULL, NULL, &i64);
1901  return o->default_val.i64 == i64;
1902  case AV_OPT_TYPE_STRING:
1903  str = *(char **)dst;
1904  if (str == o->default_val.str) //2 NULLs
1905  return 1;
1906  if (!str || !o->default_val.str) //1 NULL
1907  return 0;
1908  return !strcmp(str, o->default_val.str);
1909  case AV_OPT_TYPE_DOUBLE:
1910  read_number(o, dst, &d, NULL, NULL);
1911  return o->default_val.dbl == d;
1912  case AV_OPT_TYPE_FLOAT:
1913  read_number(o, dst, &d, NULL, NULL);
1914  f = o->default_val.dbl;
1915  d2 = f;
1916  return d2 == d;
1917  case AV_OPT_TYPE_RATIONAL:
1918  q = av_d2q(o->default_val.dbl, INT_MAX);
1919  return !av_cmp_q(*(AVRational*)dst, q);
1920  case AV_OPT_TYPE_BINARY: {
1921  struct {
1922  uint8_t *data;
1923  int size;
1924  } tmp = {0};
1925  int opt_size = *(int *)((void **)dst + 1);
1926  void *opt_ptr = *(void **)dst;
1927  if (!opt_size && (!o->default_val.str || !strlen(o->default_val.str)))
1928  return 1;
1929  if (!opt_size || !o->default_val.str || !strlen(o->default_val.str ))
1930  return 0;
1931  if (opt_size != strlen(o->default_val.str) / 2)
1932  return 0;
1933  ret = set_string_binary(NULL, NULL, o->default_val.str, &tmp.data);
1934  if (!ret)
1935  ret = !memcmp(opt_ptr, tmp.data, tmp.size);
1936  av_free(tmp.data);
1937  return ret;
1938  }
1939  case AV_OPT_TYPE_DICT:
1940  /* Binary and dict have not default support yet. Any pointer is not default. */
1941  return !!(*(void **)dst);
1943  if (!o->default_val.str || !strcmp(o->default_val.str, "none"))
1944  w = h = 0;
1945  else if ((ret = av_parse_video_size(&w, &h, o->default_val.str)) < 0)
1946  return ret;
1947  return (w == *(int *)dst) && (h == *((int *)dst+1));
1949  q = (AVRational){0, 0};
1950  if (o->default_val.str) {
1951  if ((ret = av_parse_video_rate(&q, o->default_val.str)) < 0)
1952  return ret;
1953  }
1954  return !av_cmp_q(*(AVRational*)dst, q);
1955  case AV_OPT_TYPE_COLOR: {
1956  uint8_t color[4] = {0, 0, 0, 0};
1957  if (o->default_val.str) {
1958  if ((ret = av_parse_color(color, o->default_val.str, -1, NULL)) < 0)
1959  return ret;
1960  }
1961  return !memcmp(color, dst, sizeof(color));
1962  }
1963  default:
1964  av_log(obj, AV_LOG_WARNING, "Not supported option type: %d, option name: %s\n", o->type, o->name);
1965  break;
1966  }
1967  return AVERROR_PATCHWELCOME;
1968 }
1969 
1970 int av_opt_is_set_to_default_by_name(void *obj, const char *name, int search_flags)
1971 {
1972  const AVOption *o;
1973  void *target;
1974  if (!obj)
1975  return AVERROR(EINVAL);
1976  o = av_opt_find2(obj, name, NULL, 0, search_flags, &target);
1977  if (!o)
1978  return AVERROR_OPTION_NOT_FOUND;
1979  return av_opt_is_set_to_default(target, o);
1980 }
1981 
1982 int av_opt_serialize(void *obj, int opt_flags, int flags, char **buffer,
1983  const char key_val_sep, const char pairs_sep)
1984 {
1985  const AVOption *o = NULL;
1986  uint8_t *buf;
1987  AVBPrint bprint;
1988  int ret, cnt = 0;
1989  const char special_chars[] = {pairs_sep, key_val_sep, '\0'};
1990 
1991  if (pairs_sep == '\0' || key_val_sep == '\0' || pairs_sep == key_val_sep ||
1992  pairs_sep == '\\' || key_val_sep == '\\') {
1993  av_log(obj, AV_LOG_ERROR, "Invalid separator(s) found.");
1994  return AVERROR(EINVAL);
1995  }
1996 
1997  if (!obj || !buffer)
1998  return AVERROR(EINVAL);
1999 
2000  *buffer = NULL;
2002 
2003  while (o = av_opt_next(obj, o)) {
2004  if (o->type == AV_OPT_TYPE_CONST)
2005  continue;
2006  if ((flags & AV_OPT_SERIALIZE_OPT_FLAGS_EXACT) && o->flags != opt_flags)
2007  continue;
2008  else if (((o->flags & opt_flags) != opt_flags))
2009  continue;
2010  if (flags & AV_OPT_SERIALIZE_SKIP_DEFAULTS && av_opt_is_set_to_default(obj, o) > 0)
2011  continue;
2012  if ((ret = av_opt_get(obj, o->name, 0, &buf)) < 0) {
2013  av_bprint_finalize(&bprint, NULL);
2014  return ret;
2015  }
2016  if (buf) {
2017  if (cnt++)
2018  av_bprint_append_data(&bprint, &pairs_sep, 1);
2019  av_bprint_escape(&bprint, o->name, special_chars, AV_ESCAPE_MODE_BACKSLASH, 0);
2020  av_bprint_append_data(&bprint, &key_val_sep, 1);
2021  av_bprint_escape(&bprint, buf, special_chars, AV_ESCAPE_MODE_BACKSLASH, 0);
2022  av_freep(&buf);
2023  }
2024  }
2025  av_bprint_finalize(&bprint, buffer);
2026  return 0;
2027 }
int av_opt_get_dict_val(void *obj, const char *name, int search_flags, AVDictionary **out_val)
Definition: opt.c:996
#define NULL
Definition: coverity.c:32
static const char * get_bool_name(int val)
Definition: opt.c:361
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:1072
int av_parse_video_rate(AVRational *rate, const char *arg)
Parse str and store the detected values in *rate.
Definition: parseutils.c:174
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:570
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:143
#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:318
void * av_opt_child_next(void *obj, void *prev)
Iterate over AVOptions-enabled children of obj.
Definition: opt.c:1646
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:559
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:1451
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:1654
void av_opt_set_defaults(void *s)
Set the values of all AVOption fields to their default values.
Definition: opt.c:1293
static int opt_size(enum AVOptionType type)
Definition: opt.c:1669
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:1414
static int set_string_sample_fmt(void *obj, const AVOption *o, const char *val, uint8_t *dst)
Definition: opt.c:445
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:575
Use backslash escaping.
Definition: avstring.h:310
void * av_mallocz(size_t size)
Allocate a memory block with alignment suitable for all memory accesses (including vectors if availab...
Definition: mem.c:252
int av_opt_get_q(void *obj, const char *name, int search_flags, AVRational *out_val)
Definition: opt.c:901
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:1982
static void opt_list(void *obj, void *av_log_obj, const char *unit, int req_flags, int rej_flags)
Definition: opt.c:1093
int av_opt_set_dict_val(void *obj, const char *name, const AVDictionary *val, int search_flags)
Definition: opt.c:699
#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:1970
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:1873
union AVOption::@240 default_val
the default value for scalar options
int av_opt_get_video_rate(void *obj, const char *name, int search_flags, AVRational *out_val)
Definition: opt.c:935
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:1494
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:951
Public dictionary API.
const char * name
Definition: opt.h:247
#define WHITESPACES
Definition: opt.c:1434
uint8_t
AVOptionRange ** range
Array of option ranges.
Definition: opt.h:361
#define av_malloc(s)
class_name
Definition: libkvazaar.c:276
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:1059
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:565
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:3946
#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:857
int av_opt_set_video_rate(void *obj, const char *name, AVRational val, int search_flags)
Definition: opt.c:627
#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:349
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:302
static int set_string_pixel_fmt(void *obj, const AVOption *o, const char *val, uint8_t *dst)
Definition: opt.c:439
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:969
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:723
int av_opt_set_pixel_fmt(void *obj, const char *name, enum AVPixelFormat fmt, int search_flags)
Definition: opt.c:673
#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:1661
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:560
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:320
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:299
#define FFMAX(a, b)
Definition: common.h:94
static void error(const char *err)
#define fail()
Definition: checkasm.h:84
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:1596
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:974
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
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:1380
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:683
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:1298
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:1566
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:1782
#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:877
static void log_value(void *av_log_obj, int level, double d)
Definition: opt.c:1026
#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:644
void av_opt_freep_ranges(AVOptionRanges **rangesp)
Free an AVOptionRanges struct and set it to NULL.
Definition: opt.c:1854
char * av_strdup(const char *s)
Duplicate a string.
Definition: mem.c:267
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:1591
static int set_number(void *obj, const char *name, double num, int den, int64_t intnum, int search_flags)
Definition: opt.c:544
int av_opt_show2(void *obj, void *av_log_obj, int req_flags, int rej_flags)
Show the obj options.
Definition: opt.c:1281
#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:718
static int set_string_bool(void *obj, const AVOption *o, const char *val, int *dst)
Definition: opt.c:368
#define OPT_EVAL_NUMBER(name, opttype, vartype)
Definition: opt.c:528
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:979
#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:333
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:1546
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:1761
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
#define class
Definition: math.h:25
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:889
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:399
int av_opt_copy(void *dst, const void *src)
Copy options from src object into dest object.
Definition: opt.c:1704
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:753
#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:1472
int64_t i64
Definition: opt.h:266
static uint8_t tmp[8]
Definition: des.c:38
static AVCodec * c
#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:1013
#define av_uninit(x)
Definition: attributes.h:149
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:346
#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:1602
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:2260
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:2248
Accept to parse a value without a key; the key will then be returned as NULL.
Definition: opt.h:530
int av_opt_set_sample_fmt(void *obj, const char *name, enum AVSampleFormat fmt, int search_flags)
Definition: opt.c:678
#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:605
int av_opt_set(void *obj, const char *name, const char *val, int search_flags)
Definition: opt.c:451
static int is_key_char(char c)
Definition: opt.c:1436
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:917