3 * Copyright (c) 2005 Michael Niedermayer <michaelni@gmx.at>
5 * This file is part of FFmpeg.
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.
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.
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
25 * @author Michael Niedermayer <michaelni@gmx.at>
36 //FIXME order them and do a bin search
37 const AVOption *av_find_opt(void *v, const char *name, const char *unit, int mask, int flags)
39 const AVOption *o = NULL;
41 while ((o = av_next_option(v, o))) {
42 if (!strcmp(o->name, name) && (!unit || (o->unit && !strcmp(o->unit, unit))) && (o->flags & mask) == flags)
49 #if FF_API_OLD_AVOPTIONS
50 const AVOption *av_next_option(void *obj, const AVOption *last)
52 return av_opt_next(obj, last);
56 const AVOption *av_opt_next(void *obj, const AVOption *last)
58 AVClass *class = *(AVClass**)obj;
59 if (!last && class->option[0].name) return class->option;
60 if (last && last[1].name) return ++last;
64 static int read_number(const AVOption *o, void *dst, double *num, int *den, int64_t *intnum)
67 case AV_OPT_TYPE_FLAGS: *intnum = *(unsigned int*)dst;return 0;
68 case AV_OPT_TYPE_INT: *intnum = *(int *)dst;return 0;
69 case AV_OPT_TYPE_INT64: *intnum = *(int64_t *)dst;return 0;
70 case AV_OPT_TYPE_FLOAT: *num = *(float *)dst;return 0;
71 case AV_OPT_TYPE_DOUBLE: *num = *(double *)dst;return 0;
72 case AV_OPT_TYPE_RATIONAL: *intnum = ((AVRational*)dst)->num;
73 *den = ((AVRational*)dst)->den;
75 case AV_OPT_TYPE_CONST: *num = o->default_val.dbl; return 0;
77 return AVERROR(EINVAL);
80 static int write_number(void *obj, const AVOption *o, void *dst, double num, int den, int64_t intnum)
82 if (o->max*den < num*intnum || o->min*den > num*intnum) {
83 av_log(obj, AV_LOG_ERROR, "Value %f for parameter '%s' out of range\n", num*intnum/den, o->name);
84 return AVERROR(ERANGE);
88 case AV_OPT_TYPE_FLAGS:
89 case AV_OPT_TYPE_INT: *(int *)dst= llrint(num/den)*intnum; break;
90 case AV_OPT_TYPE_INT64: *(int64_t *)dst= llrint(num/den)*intnum; break;
91 case AV_OPT_TYPE_FLOAT: *(float *)dst= num*intnum/den; break;
92 case AV_OPT_TYPE_DOUBLE:*(double *)dst= num*intnum/den; break;
93 case AV_OPT_TYPE_RATIONAL:
94 if ((int)num == num) *(AVRational*)dst= (AVRational){num*intnum, den};
95 else *(AVRational*)dst= av_d2q(num*intnum/den, 1<<24);
98 return AVERROR(EINVAL);
103 static const double const_values[] = {
110 static const char * const const_names[] = {
117 static int hexchar2int(char c) {
118 if (c >= '0' && c <= '9') return c - '0';
119 if (c >= 'a' && c <= 'f') return c - 'a' + 10;
120 if (c >= 'A' && c <= 'F') return c - 'A' + 10;
124 static int set_string_binary(void *obj, const AVOption *o, const char *val, uint8_t **dst)
126 int *lendst = (int *)(dst + 1);
128 int len = strlen(val);
134 return AVERROR(EINVAL);
137 ptr = bin = av_malloc(len);
139 int a = hexchar2int(*val++);
140 int b = hexchar2int(*val++);
141 if (a < 0 || b < 0) {
143 return AVERROR(EINVAL);
145 *ptr++ = (a << 4) | b;
153 static int set_string(void *obj, const AVOption *o, const char *val, uint8_t **dst)
156 *dst = av_strdup(val);
160 static int set_string_number(void *obj, const AVOption *o, const char *val, void *dst)
162 int ret = 0, notfirst = 0;
170 if (*val == '+' || *val == '-')
173 for (i = 0; i < sizeof(buf) - 1 && val[i] && val[i] != '+' && val[i] != '-'; i++)
178 const AVOption *o_named = av_opt_find(obj, buf, o->unit, 0, 0);
179 if (o_named && o_named->type == AV_OPT_TYPE_CONST)
180 d = o_named->default_val.dbl;
181 else if (!strcmp(buf, "default")) d = o->default_val.dbl;
182 else if (!strcmp(buf, "max" )) d = o->max;
183 else if (!strcmp(buf, "min" )) d = o->min;
184 else if (!strcmp(buf, "none" )) d = 0;
185 else if (!strcmp(buf, "all" )) d = ~0;
187 int res = av_expr_parse_and_eval(&d, buf, const_names, const_values, NULL, NULL, NULL, NULL, NULL, 0, obj);
189 av_log(obj, AV_LOG_ERROR, "Unable to parse option value \"%s\"\n", val);
194 if (o->type == AV_OPT_TYPE_FLAGS) {
195 read_number(o, dst, NULL, NULL, &intnum);
196 if (cmd == '+') d = intnum | (int64_t)d;
197 else if (cmd == '-') d = intnum &~(int64_t)d;
199 read_number(o, dst, &num, &den, &intnum);
200 if (cmd == '+') d = notfirst*num*intnum/den + d;
201 else if (cmd == '-') d = notfirst*num*intnum/den - d;
204 if ((ret = write_number(obj, o, dst, d, 1, 1)) < 0)
215 #if FF_API_OLD_AVOPTIONS
216 int av_set_string3(void *obj, const char *name, const char *val, int alloc, const AVOption **o_out)
218 const AVOption *o = av_opt_find(obj, name, NULL, 0, 0);
221 return av_opt_set(obj, name, val, 0);
225 int av_opt_set(void *obj, const char *name, const char *val, int search_flags)
227 void *dst, *target_obj;
228 const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
229 if (!o || !target_obj)
230 return AVERROR_OPTION_NOT_FOUND;
231 if (!val && o->type != AV_OPT_TYPE_STRING)
232 return AVERROR(EINVAL);
234 dst = ((uint8_t*)target_obj) + o->offset;
236 case AV_OPT_TYPE_STRING: return set_string(obj, o, val, dst);
237 case AV_OPT_TYPE_BINARY: return set_string_binary(obj, o, val, dst);
238 case AV_OPT_TYPE_FLAGS:
239 case AV_OPT_TYPE_INT:
240 case AV_OPT_TYPE_INT64:
241 case AV_OPT_TYPE_FLOAT:
242 case AV_OPT_TYPE_DOUBLE:
243 case AV_OPT_TYPE_RATIONAL: return set_string_number(obj, o, val, dst);
246 av_log(obj, AV_LOG_ERROR, "Invalid option type.\n");
247 return AVERROR(EINVAL);
250 #define OPT_EVAL_NUMBER(name, opttype, vartype)\
251 int av_opt_eval_ ## name(void *obj, const AVOption *o, const char *val, vartype *name ## _out)\
253 if (!o || o->type != opttype)\
254 return AVERROR(EINVAL);\
255 return set_string_number(obj, o, val, name ## _out);\
258 OPT_EVAL_NUMBER(flags, AV_OPT_TYPE_FLAGS, int)
259 OPT_EVAL_NUMBER(int, AV_OPT_TYPE_INT, int)
260 OPT_EVAL_NUMBER(int64, AV_OPT_TYPE_INT64, int64_t)
261 OPT_EVAL_NUMBER(float, AV_OPT_TYPE_FLOAT, float)
262 OPT_EVAL_NUMBER(double, AV_OPT_TYPE_DOUBLE, double)
263 OPT_EVAL_NUMBER(q, AV_OPT_TYPE_RATIONAL, AVRational)
265 static int set_number(void *obj, const char *name, double num, int den, int64_t intnum,
268 void *dst, *target_obj;
269 const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
271 if (!o || !target_obj)
272 return AVERROR_OPTION_NOT_FOUND;
274 dst = ((uint8_t*)target_obj) + o->offset;
275 return write_number(obj, o, dst, num, den, intnum);
278 #if FF_API_OLD_AVOPTIONS
279 const AVOption *av_set_double(void *obj, const char *name, double n)
281 const AVOption *o = av_opt_find(obj, name, NULL, 0, 0);
282 if (set_number(obj, name, n, 1, 1, 0) < 0)
287 const AVOption *av_set_q(void *obj, const char *name, AVRational n)
289 const AVOption *o = av_opt_find(obj, name, NULL, 0, 0);
290 if (set_number(obj, name, n.num, n.den, 1, 0) < 0)
295 const AVOption *av_set_int(void *obj, const char *name, int64_t n)
297 const AVOption *o = av_opt_find(obj, name, NULL, 0, 0);
298 if (set_number(obj, name, 1, 1, n, 0) < 0)
304 int av_opt_set_int(void *obj, const char *name, int64_t val, int search_flags)
306 return set_number(obj, name, 1, 1, val, search_flags);
309 int av_opt_set_double(void *obj, const char *name, double val, int search_flags)
311 return set_number(obj, name, val, 1, 1, search_flags);
314 int av_opt_set_q(void *obj, const char *name, AVRational val, int search_flags)
316 return set_number(obj, name, val.num, val.den, 1, search_flags);
319 #if FF_API_OLD_AVOPTIONS
322 * @param buf a buffer which is used for returning non string values as strings, can be NULL
323 * @param buf_len allocated length in bytes of buf
325 const char *av_get_string(void *obj, const char *name, const AVOption **o_out, char *buf, int buf_len)
327 const AVOption *o = av_opt_find(obj, name, NULL, 0, AV_OPT_SEARCH_CHILDREN);
333 if (o->type != AV_OPT_TYPE_STRING && (!buf || !buf_len))
336 dst= ((uint8_t*)obj) + o->offset;
337 if (o_out) *o_out= o;
340 case AV_OPT_TYPE_FLAGS: snprintf(buf, buf_len, "0x%08X",*(int *)dst);break;
341 case AV_OPT_TYPE_INT: snprintf(buf, buf_len, "%d" , *(int *)dst);break;
342 case AV_OPT_TYPE_INT64: snprintf(buf, buf_len, "%"PRId64, *(int64_t*)dst);break;
343 case AV_OPT_TYPE_FLOAT: snprintf(buf, buf_len, "%f" , *(float *)dst);break;
344 case AV_OPT_TYPE_DOUBLE: snprintf(buf, buf_len, "%f" , *(double *)dst);break;
345 case AV_OPT_TYPE_RATIONAL: snprintf(buf, buf_len, "%d/%d", ((AVRational*)dst)->num, ((AVRational*)dst)->den);break;
346 case AV_OPT_TYPE_CONST: snprintf(buf, buf_len, "%f" , o->default_val.dbl);break;
347 case AV_OPT_TYPE_STRING: return *(void**)dst;
348 case AV_OPT_TYPE_BINARY:
349 len = *(int*)(((uint8_t *)dst) + sizeof(uint8_t *));
350 if (len >= (buf_len + 1)/2) return NULL;
351 bin = *(uint8_t**)dst;
352 for (i = 0; i < len; i++) snprintf(buf + i*2, 3, "%02X", bin[i]);
354 default: return NULL;
360 int av_opt_get(void *obj, const char *name, int search_flags, uint8_t **out_val)
362 void *dst, *target_obj;
363 const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
364 uint8_t *bin, buf[128];
367 if (!o || !target_obj || (o->offset<=0 && o->type != AV_OPT_TYPE_CONST))
368 return AVERROR_OPTION_NOT_FOUND;
370 dst = (uint8_t*)target_obj + o->offset;
374 case AV_OPT_TYPE_FLAGS: ret = snprintf(buf, sizeof(buf), "0x%08X", *(int *)dst);break;
375 case AV_OPT_TYPE_INT: ret = snprintf(buf, sizeof(buf), "%d" , *(int *)dst);break;
376 case AV_OPT_TYPE_INT64: ret = snprintf(buf, sizeof(buf), "%"PRId64, *(int64_t*)dst);break;
377 case AV_OPT_TYPE_FLOAT: ret = snprintf(buf, sizeof(buf), "%f" , *(float *)dst);break;
378 case AV_OPT_TYPE_DOUBLE: ret = snprintf(buf, sizeof(buf), "%f" , *(double *)dst);break;
379 case AV_OPT_TYPE_RATIONAL: ret = snprintf(buf, sizeof(buf), "%d/%d", ((AVRational*)dst)->num, ((AVRational*)dst)->den);break;
380 case AV_OPT_TYPE_CONST: ret = snprintf(buf, sizeof(buf), "%f" , o->default_val.dbl);break;
381 case AV_OPT_TYPE_STRING:
383 *out_val = av_strdup(*(uint8_t**)dst);
385 *out_val = av_strdup("");
387 case AV_OPT_TYPE_BINARY:
388 len = *(int*)(((uint8_t *)dst) + sizeof(uint8_t *));
389 if ((uint64_t)len*2 + 1 > INT_MAX)
390 return AVERROR(EINVAL);
391 if (!(*out_val = av_malloc(len*2 + 1)))
392 return AVERROR(ENOMEM);
393 bin = *(uint8_t**)dst;
394 for (i = 0; i < len; i++)
395 snprintf(*out_val + i*2, 3, "%02X", bin[i]);
398 return AVERROR(EINVAL);
401 if (ret >= sizeof(buf))
402 return AVERROR(EINVAL);
403 *out_val = av_strdup(buf);
407 static int get_number(void *obj, const char *name, const AVOption **o_out, double *num, int *den, int64_t *intnum,
410 void *dst, *target_obj;
411 const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
412 if (!o || !target_obj)
415 dst = ((uint8_t*)target_obj) + o->offset;
417 if (o_out) *o_out= o;
419 return read_number(o, dst, num, den, intnum);
426 #if FF_API_OLD_AVOPTIONS
427 double av_get_double(void *obj, const char *name, const AVOption **o_out)
433 if (get_number(obj, name, o_out, &num, &den, &intnum, 0) < 0)
435 return num*intnum/den;
438 AVRational av_get_q(void *obj, const char *name, const AVOption **o_out)
444 if (get_number(obj, name, o_out, &num, &den, &intnum, 0) < 0)
445 return (AVRational){0, 0};
446 if (num == 1.0 && (int)intnum == intnum)
447 return (AVRational){intnum, den};
449 return av_d2q(num*intnum/den, 1<<24);
452 int64_t av_get_int(void *obj, const char *name, const AVOption **o_out)
458 if (get_number(obj, name, o_out, &num, &den, &intnum, 0) < 0)
460 return num*intnum/den;
464 int av_opt_get_int(void *obj, const char *name, int search_flags, int64_t *out_val)
470 if ((ret = get_number(obj, name, NULL, &num, &den, &intnum, search_flags)) < 0)
472 *out_val = num*intnum/den;
476 int av_opt_get_double(void *obj, const char *name, int search_flags, double *out_val)
482 if ((ret = get_number(obj, name, NULL, &num, &den, &intnum, search_flags)) < 0)
484 *out_val = num*intnum/den;
488 int av_opt_get_q(void *obj, const char *name, int search_flags, AVRational *out_val)
494 if ((ret = get_number(obj, name, NULL, &num, &den, &intnum, search_flags)) < 0)
497 if (num == 1.0 && (int)intnum == intnum)
498 *out_val = (AVRational){intnum, den};
500 *out_val = av_d2q(num*intnum/den, 1<<24);
504 int av_opt_flag_is_set(void *obj, const char *field_name, const char *flag_name)
506 const AVOption *field = av_opt_find(obj, field_name, NULL, 0, 0);
507 const AVOption *flag = av_opt_find(obj, flag_name,
508 field ? field->unit : NULL, 0, 0);
511 if (!field || !flag || flag->type != AV_OPT_TYPE_CONST ||
512 av_opt_get_int(obj, field_name, 0, &res) < 0)
514 return res & (int) flag->default_val.dbl;
517 static void opt_list(void *obj, void *av_log_obj, const char *unit,
518 int req_flags, int rej_flags)
520 const AVOption *opt=NULL;
522 while ((opt = av_opt_next(obj, opt))) {
523 if (!(opt->flags & req_flags) || (opt->flags & rej_flags))
526 /* Don't print CONST's on level one.
527 * Don't print anything but CONST's on level two.
528 * Only print items from the requested unit.
530 if (!unit && opt->type==AV_OPT_TYPE_CONST)
532 else if (unit && opt->type!=AV_OPT_TYPE_CONST)
534 else if (unit && opt->type==AV_OPT_TYPE_CONST && strcmp(unit, opt->unit))
536 else if (unit && opt->type == AV_OPT_TYPE_CONST)
537 av_log(av_log_obj, AV_LOG_INFO, " %-15s ", opt->name);
539 av_log(av_log_obj, AV_LOG_INFO, "-%-17s ", opt->name);
542 case AV_OPT_TYPE_FLAGS:
543 av_log(av_log_obj, AV_LOG_INFO, "%-7s ", "<flags>");
545 case AV_OPT_TYPE_INT:
546 av_log(av_log_obj, AV_LOG_INFO, "%-7s ", "<int>");
548 case AV_OPT_TYPE_INT64:
549 av_log(av_log_obj, AV_LOG_INFO, "%-7s ", "<int64>");
551 case AV_OPT_TYPE_DOUBLE:
552 av_log(av_log_obj, AV_LOG_INFO, "%-7s ", "<double>");
554 case AV_OPT_TYPE_FLOAT:
555 av_log(av_log_obj, AV_LOG_INFO, "%-7s ", "<float>");
557 case AV_OPT_TYPE_STRING:
558 av_log(av_log_obj, AV_LOG_INFO, "%-7s ", "<string>");
560 case AV_OPT_TYPE_RATIONAL:
561 av_log(av_log_obj, AV_LOG_INFO, "%-7s ", "<rational>");
563 case AV_OPT_TYPE_BINARY:
564 av_log(av_log_obj, AV_LOG_INFO, "%-7s ", "<binary>");
566 case AV_OPT_TYPE_CONST:
568 av_log(av_log_obj, AV_LOG_INFO, "%-7s ", "");
571 av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_ENCODING_PARAM) ? 'E' : '.');
572 av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_DECODING_PARAM) ? 'D' : '.');
573 av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_VIDEO_PARAM ) ? 'V' : '.');
574 av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_AUDIO_PARAM ) ? 'A' : '.');
575 av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_SUBTITLE_PARAM) ? 'S' : '.');
578 av_log(av_log_obj, AV_LOG_INFO, " %s", opt->help);
579 av_log(av_log_obj, AV_LOG_INFO, "\n");
580 if (opt->unit && opt->type != AV_OPT_TYPE_CONST) {
581 opt_list(obj, av_log_obj, opt->unit, req_flags, rej_flags);
586 int av_opt_show2(void *obj, void *av_log_obj, int req_flags, int rej_flags)
591 av_log(av_log_obj, AV_LOG_INFO, "%s AVOptions:\n", (*(AVClass**)obj)->class_name);
593 opt_list(obj, av_log_obj, NULL, req_flags, rej_flags);
598 void av_opt_set_defaults(void *s)
600 #if FF_API_OLD_AVOPTIONS
601 av_opt_set_defaults2(s, 0, 0);
604 void av_opt_set_defaults2(void *s, int mask, int flags)
607 const AVOption *opt = NULL;
608 while ((opt = av_opt_next(s, opt)) != NULL) {
609 #if FF_API_OLD_AVOPTIONS
610 if ((opt->flags & mask) != flags)
614 case AV_OPT_TYPE_CONST:
615 /* Nothing to be done here */
617 case AV_OPT_TYPE_FLAGS:
618 case AV_OPT_TYPE_INT: {
620 val = opt->default_val.dbl;
621 av_opt_set_int(s, opt->name, val, 0);
624 case AV_OPT_TYPE_INT64:
625 if ((double)(opt->default_val.dbl+0.6) == opt->default_val.dbl)
626 av_log(s, AV_LOG_DEBUG, "loss of precision in default of %s\n", opt->name);
627 av_opt_set_int(s, opt->name, opt->default_val.dbl, 0);
629 case AV_OPT_TYPE_DOUBLE:
630 case AV_OPT_TYPE_FLOAT: {
632 val = opt->default_val.dbl;
633 av_opt_set_double(s, opt->name, val, 0);
636 case AV_OPT_TYPE_RATIONAL: {
638 val = av_d2q(opt->default_val.dbl, INT_MAX);
639 av_opt_set_q(s, opt->name, val, 0);
642 case AV_OPT_TYPE_STRING:
643 av_opt_set(s, opt->name, opt->default_val.str, 0);
645 case AV_OPT_TYPE_BINARY:
646 /* Cannot set default for binary */
649 av_log(s, AV_LOG_DEBUG, "AVOption type %d of option %s not implemented yet\n", opt->type, opt->name);
655 * Store the value in the field in ctx that is named like key.
656 * ctx must be an AVClass context, storing is done using AVOptions.
658 * @param buf the string to parse, buf will be updated to point at the
659 * separator just after the parsed key/value pair
660 * @param key_val_sep a 0-terminated list of characters used to
661 * separate key from value
662 * @param pairs_sep a 0-terminated list of characters used to separate
663 * two pairs from each other
664 * @return 0 if the key/value pair has been successfully parsed and
665 * set, or a negative value corresponding to an AVERROR code in case
667 * AVERROR(EINVAL) if the key/value pair cannot be parsed,
668 * the error code issued by av_opt_set() if the key/value pair
671 static int parse_key_value_pair(void *ctx, const char **buf,
672 const char *key_val_sep, const char *pairs_sep)
674 char *key = av_get_token(buf, key_val_sep);
678 if (*key && strspn(*buf, key_val_sep)) {
680 val = av_get_token(buf, pairs_sep);
682 av_log(ctx, AV_LOG_ERROR, "Missing key or no key/value separator found after key '%s'\n", key);
684 return AVERROR(EINVAL);
687 av_log(ctx, AV_LOG_DEBUG, "Setting value '%s' for key '%s'\n", val, key);
689 ret = av_opt_set(ctx, key, val, 0);
690 if (ret == AVERROR_OPTION_NOT_FOUND)
691 av_log(ctx, AV_LOG_ERROR, "Key '%s' not found.\n", key);
698 int av_set_options_string(void *ctx, const char *opts,
699 const char *key_val_sep, const char *pairs_sep)
707 if ((ret = parse_key_value_pair(ctx, &opts, key_val_sep, pairs_sep)) < 0)
718 void av_opt_free(void *obj)
720 const AVOption *o = NULL;
721 while ((o = av_opt_next(obj, o)))
722 if (o->type == AV_OPT_TYPE_STRING || o->type == AV_OPT_TYPE_BINARY)
723 av_freep((uint8_t *)obj + o->offset);
726 int av_opt_set_dict(void *obj, AVDictionary **options)
728 AVDictionaryEntry *t = NULL;
729 AVDictionary *tmp = NULL;
732 while ((t = av_dict_get(*options, "", t, AV_DICT_IGNORE_SUFFIX))) {
733 ret = av_opt_set(obj, t->key, t->value, 0);
734 if (ret == AVERROR_OPTION_NOT_FOUND)
735 av_dict_set(&tmp, t->key, t->value, 0);
737 av_log(obj, AV_LOG_ERROR, "Error setting option %s to value %s.\n", t->key, t->value);
742 av_dict_free(options);
747 const AVOption *av_opt_find(void *obj, const char *name, const char *unit,
748 int opt_flags, int search_flags)
750 return av_opt_find2(obj, name, unit, opt_flags, search_flags, NULL);
753 const AVOption *av_opt_find2(void *obj, const char *name, const char *unit,
754 int opt_flags, int search_flags, void **target_obj)
757 const AVOption *o = NULL;
764 if (search_flags & AV_OPT_SEARCH_CHILDREN) {
765 if (search_flags & AV_OPT_SEARCH_FAKE_OBJ) {
766 const AVClass *child = NULL;
767 while (child = av_opt_child_class_next(c, child))
768 if (o = av_opt_find2(&child, name, unit, opt_flags, search_flags, NULL))
772 while (child = av_opt_child_next(obj, child))
773 if (o = av_opt_find2(child, name, unit, opt_flags, search_flags, target_obj))
778 while (o = av_opt_next(obj, o)) {
779 if (!strcmp(o->name, name) && (o->flags & opt_flags) == opt_flags &&
780 ((!unit && o->type != AV_OPT_TYPE_CONST) ||
781 (unit && o->type == AV_OPT_TYPE_CONST && o->unit && !strcmp(o->unit, unit)))) {
783 if (!(search_flags & AV_OPT_SEARCH_FAKE_OBJ))
794 void *av_opt_child_next(void *obj, void *prev)
796 const AVClass *c = *(AVClass**)obj;
798 return c->child_next(obj, prev);
802 const AVClass *av_opt_child_class_next(const AVClass *parent, const AVClass *prev)
804 if (parent->child_class_next)
805 return parent->child_class_next(prev);
809 void *av_opt_ptr(const AVClass *class, void *obj, const char *name)
811 const AVOption *opt= av_opt_find2(&class, name, NULL, 0, AV_OPT_SEARCH_FAKE_OBJ, NULL);
814 return (uint8_t*)obj + opt->offset;
821 typedef struct TestContext
823 const AVClass *class;
831 #define OFFSET(x) offsetof(TestContext, x)
833 #define TEST_FLAG_COOL 01
834 #define TEST_FLAG_LAME 02
835 #define TEST_FLAG_MU 04
837 static const AVOption test_options[]= {
838 {"num", "set num", OFFSET(num), AV_OPT_TYPE_INT, {0}, 0, 100 },
839 {"toggle", "set toggle", OFFSET(toggle), AV_OPT_TYPE_INT, {0}, 0, 1 },
840 {"rational", "set rational", OFFSET(rational), AV_OPT_TYPE_RATIONAL, {0}, 0, 10 },
841 {"string", "set string", OFFSET(string), AV_OPT_TYPE_STRING, {0}, CHAR_MIN, CHAR_MAX },
842 {"flags", "set flags", OFFSET(flags), AV_OPT_TYPE_FLAGS, {0}, 0, INT_MAX, 0, "flags" },
843 {"cool", "set cool flag ", 0, AV_OPT_TYPE_CONST, {TEST_FLAG_COOL}, INT_MIN, INT_MAX, 0, "flags" },
844 {"lame", "set lame flag ", 0, AV_OPT_TYPE_CONST, {TEST_FLAG_LAME}, INT_MIN, INT_MAX, 0, "flags" },
845 {"mu", "set mu flag ", 0, AV_OPT_TYPE_CONST, {TEST_FLAG_MU}, INT_MIN, INT_MAX, 0, "flags" },
849 static const char *test_get_name(void *ctx)
854 static const AVClass test_class = {
864 printf("\nTesting av_set_options_string()\n");
866 TestContext test_ctx;
867 const char *options[] = {
883 "flags=+mu-lame : num=42: toggle=0",
884 "num=42 : string=blahblah",
885 "rational=0 : rational=1/2 : rational=1/-1",
889 test_ctx.class = &test_class;
890 av_opt_set_defaults(&test_ctx);
891 test_ctx.string = av_strdup("default");
893 av_log_set_level(AV_LOG_DEBUG);
895 for (i=0; i < FF_ARRAY_ELEMS(options); i++) {
896 av_log(&test_ctx, AV_LOG_DEBUG, "Setting options string '%s'\n", options[i]);
897 if (av_set_options_string(&test_ctx, options[i], "=", ":") < 0)
898 av_log(&test_ctx, AV_LOG_ERROR, "Error setting options string: '%s'\n", options[i]);