3 * Copyright (c) 2005 Michael Niedermayer <michaelni@gmx.at>
5 * This file is part of Libav.
7 * Libav 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 * Libav 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 Libav; 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>
34 #include "mathematics.h"
37 //FIXME order them and do a bin search
38 const AVOption *av_find_opt(void *v, const char *name, const char *unit, int mask, int flags)
40 AVClass *c= *(AVClass**)v; //FIXME silly way of storing AVClass
41 const AVOption *o= c->option;
43 for (; o && o->name; o++) {
44 if (!strcmp(o->name, name) && (!unit || (o->unit && !strcmp(o->unit, unit))) && (o->flags & mask) == flags)
51 #if FF_API_OLD_AVOPTIONS
52 const AVOption *av_next_option(void *obj, const AVOption *last)
54 return av_opt_next(obj, last);
58 const AVOption *av_opt_next(void *obj, const AVOption *last)
60 AVClass *class = *(AVClass**)obj;
61 if (!last && class->option[0].name) return class->option;
62 if (last && last[1].name) return ++last;
66 static int read_number(const AVOption *o, void *dst, double *num, int *den, int64_t *intnum)
69 case AV_OPT_TYPE_FLAGS: *intnum = *(unsigned int*)dst;return 0;
70 case AV_OPT_TYPE_INT: *intnum = *(int *)dst;return 0;
71 case AV_OPT_TYPE_INT64: *intnum = *(int64_t *)dst;return 0;
72 case AV_OPT_TYPE_FLOAT: *num = *(float *)dst;return 0;
73 case AV_OPT_TYPE_DOUBLE: *num = *(double *)dst;return 0;
74 case AV_OPT_TYPE_RATIONAL: *intnum = ((AVRational*)dst)->num;
75 *den = ((AVRational*)dst)->den;
78 return AVERROR(EINVAL);
81 static int write_number(void *obj, const AVOption *o, void *dst, double num, int den, int64_t intnum)
83 if (o->max*den < num*intnum || o->min*den > num*intnum) {
84 av_log(obj, AV_LOG_ERROR, "Value %lf for parameter '%s' out of range\n",
85 num*intnum/den, o->name);
86 return AVERROR(ERANGE);
90 case AV_OPT_TYPE_FLAGS:
91 case AV_OPT_TYPE_INT: *(int *)dst= llrint(num/den)*intnum; break;
92 case AV_OPT_TYPE_INT64: *(int64_t *)dst= llrint(num/den)*intnum; break;
93 case AV_OPT_TYPE_FLOAT: *(float *)dst= num*intnum/den; break;
94 case AV_OPT_TYPE_DOUBLE:*(double *)dst= num*intnum/den; break;
95 case AV_OPT_TYPE_RATIONAL:
96 if ((int)num == num) *(AVRational*)dst= (AVRational){num*intnum, den};
97 else *(AVRational*)dst= av_d2q(num*intnum/den, 1<<24);
100 return AVERROR(EINVAL);
105 static const double const_values[] = {
112 static const char * const const_names[] = {
119 static int hexchar2int(char c) {
120 if (c >= '0' && c <= '9') return c - '0';
121 if (c >= 'a' && c <= 'f') return c - 'a' + 10;
122 if (c >= 'A' && c <= 'F') return c - 'A' + 10;
126 static int set_string_binary(void *obj, const AVOption *o, const char *val, uint8_t **dst)
128 int *lendst = (int *)(dst + 1);
130 int len = strlen(val);
136 return AVERROR(EINVAL);
139 ptr = bin = av_malloc(len);
141 int a = hexchar2int(*val++);
142 int b = hexchar2int(*val++);
143 if (a < 0 || b < 0) {
145 return AVERROR(EINVAL);
147 *ptr++ = (a << 4) | b;
155 static int set_string(void *obj, const AVOption *o, const char *val, uint8_t **dst)
158 *dst = av_strdup(val);
162 static int set_string_number(void *obj, const AVOption *o, const char *val, void *dst)
164 int ret = 0, notfirst = 0;
172 if (*val == '+' || *val == '-')
175 for (i = 0; i < sizeof(buf) - 1 && val[i] && val[i] != '+' && val[i] != '-'; i++)
180 const AVOption *o_named = av_opt_find(obj, buf, o->unit, 0, 0);
181 if (o_named && o_named->type == AV_OPT_TYPE_CONST)
182 d = o_named->default_val.dbl;
183 else if (!strcmp(buf, "default")) d = o->default_val.dbl;
184 else if (!strcmp(buf, "max" )) d = o->max;
185 else if (!strcmp(buf, "min" )) d = o->min;
186 else if (!strcmp(buf, "none" )) d = 0;
187 else if (!strcmp(buf, "all" )) d = ~0;
189 int res = av_expr_parse_and_eval(&d, buf, const_names, const_values, NULL, NULL, NULL, NULL, NULL, 0, obj);
191 av_log(obj, AV_LOG_ERROR, "Unable to parse option value \"%s\"\n", val);
196 if (o->type == AV_OPT_TYPE_FLAGS) {
197 read_number(o, dst, NULL, NULL, &intnum);
198 if (cmd == '+') d = intnum | (int64_t)d;
199 else if (cmd == '-') d = intnum &~(int64_t)d;
201 read_number(o, dst, &num, &den, &intnum);
202 if (cmd == '+') d = notfirst*num*intnum/den + d;
203 else if (cmd == '-') d = notfirst*num*intnum/den - d;
206 if ((ret = write_number(obj, o, dst, d, 1, 1)) < 0)
217 #if FF_API_OLD_AVOPTIONS
218 int av_set_string3(void *obj, const char *name, const char *val, int alloc, const AVOption **o_out)
220 const AVOption *o = av_opt_find(obj, name, NULL, 0, 0);
223 return av_opt_set(obj, name, val, 0);
227 int av_opt_set(void *obj, const char *name, const char *val, int search_flags)
229 void *dst, *target_obj;
230 const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
231 if (!o || !target_obj)
232 return AVERROR_OPTION_NOT_FOUND;
234 return AVERROR(EINVAL);
236 dst = ((uint8_t*)target_obj) + o->offset;
238 case AV_OPT_TYPE_STRING: return set_string(obj, o, val, dst);
239 case AV_OPT_TYPE_BINARY: return set_string_binary(obj, o, val, dst);
240 case AV_OPT_TYPE_FLAGS:
241 case AV_OPT_TYPE_INT:
242 case AV_OPT_TYPE_INT64:
243 case AV_OPT_TYPE_FLOAT:
244 case AV_OPT_TYPE_DOUBLE:
245 case AV_OPT_TYPE_RATIONAL: return set_string_number(obj, o, val, dst);
248 av_log(obj, AV_LOG_ERROR, "Invalid option type.\n");
249 return AVERROR(EINVAL);
252 #define OPT_EVAL_NUMBER(name, opttype, vartype)\
253 int av_opt_eval_ ## name(void *obj, const AVOption *o, const char *val, vartype *name ## _out)\
255 if (!o || o->type != opttype)\
256 return AVERROR(EINVAL);\
257 return set_string_number(obj, o, val, name ## _out);\
260 OPT_EVAL_NUMBER(flags, AV_OPT_TYPE_FLAGS, int)
261 OPT_EVAL_NUMBER(int, AV_OPT_TYPE_INT, int)
262 OPT_EVAL_NUMBER(int64, AV_OPT_TYPE_INT64, int64_t)
263 OPT_EVAL_NUMBER(float, AV_OPT_TYPE_FLOAT, float)
264 OPT_EVAL_NUMBER(double, AV_OPT_TYPE_DOUBLE, double)
265 OPT_EVAL_NUMBER(q, AV_OPT_TYPE_RATIONAL, AVRational)
267 static int set_number(void *obj, const char *name, double num, int den, int64_t intnum,
270 void *dst, *target_obj;
271 const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
273 if (!o || !target_obj)
274 return AVERROR_OPTION_NOT_FOUND;
276 dst = ((uint8_t*)target_obj) + o->offset;
277 return write_number(obj, o, dst, num, den, intnum);
280 #if FF_API_OLD_AVOPTIONS
281 const AVOption *av_set_double(void *obj, const char *name, double n)
283 const AVOption *o = av_opt_find(obj, name, NULL, 0, 0);
284 if (set_number(obj, name, n, 1, 1, 0) < 0)
289 const AVOption *av_set_q(void *obj, const char *name, AVRational n)
291 const AVOption *o = av_opt_find(obj, name, NULL, 0, 0);
292 if (set_number(obj, name, n.num, n.den, 1, 0) < 0)
297 const AVOption *av_set_int(void *obj, const char *name, int64_t n)
299 const AVOption *o = av_opt_find(obj, name, NULL, 0, 0);
300 if (set_number(obj, name, 1, 1, n, 0) < 0)
306 int av_opt_set_int(void *obj, const char *name, int64_t val, int search_flags)
308 return set_number(obj, name, 1, 1, val, search_flags);
311 int av_opt_set_double(void *obj, const char *name, double val, int search_flags)
313 return set_number(obj, name, val, 1, 1, search_flags);
316 int av_opt_set_q(void *obj, const char *name, AVRational val, int search_flags)
318 return set_number(obj, name, val.num, val.den, 1, search_flags);
321 int av_opt_set_bin(void *obj, const char *name, const uint8_t *val, int len, int search_flags)
324 const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
329 if (!o || !target_obj)
330 return AVERROR_OPTION_NOT_FOUND;
332 if (o->type != AV_OPT_TYPE_BINARY)
333 return AVERROR(EINVAL);
335 ptr = av_malloc(len);
337 return AVERROR(ENOMEM);
339 dst = (uint8_t **)(((uint8_t *)target_obj) + o->offset);
340 lendst = (int *)(dst + 1);
345 memcpy(ptr, val, len);
350 #if FF_API_OLD_AVOPTIONS
353 * @param buf a buffer which is used for returning non string values as strings, can be NULL
354 * @param buf_len allocated length in bytes of buf
356 const char *av_get_string(void *obj, const char *name, const AVOption **o_out, char *buf, int buf_len)
358 const AVOption *o = av_opt_find(obj, name, NULL, 0, 0);
364 if (o->type != AV_OPT_TYPE_STRING && (!buf || !buf_len))
367 dst= ((uint8_t*)obj) + o->offset;
368 if (o_out) *o_out= o;
371 case AV_OPT_TYPE_FLAGS: snprintf(buf, buf_len, "0x%08X",*(int *)dst);break;
372 case AV_OPT_TYPE_INT: snprintf(buf, buf_len, "%d" , *(int *)dst);break;
373 case AV_OPT_TYPE_INT64: snprintf(buf, buf_len, "%"PRId64, *(int64_t*)dst);break;
374 case AV_OPT_TYPE_FLOAT: snprintf(buf, buf_len, "%f" , *(float *)dst);break;
375 case AV_OPT_TYPE_DOUBLE: snprintf(buf, buf_len, "%f" , *(double *)dst);break;
376 case AV_OPT_TYPE_RATIONAL: snprintf(buf, buf_len, "%d/%d", ((AVRational*)dst)->num, ((AVRational*)dst)->den);break;
377 case AV_OPT_TYPE_STRING: return *(void**)dst;
378 case AV_OPT_TYPE_BINARY:
379 len = *(int*)(((uint8_t *)dst) + sizeof(uint8_t *));
380 if (len >= (buf_len + 1)/2) return NULL;
381 bin = *(uint8_t**)dst;
382 for (i = 0; i < len; i++) snprintf(buf + i*2, 3, "%02X", bin[i]);
384 default: return NULL;
390 int av_opt_get(void *obj, const char *name, int search_flags, uint8_t **out_val)
392 void *dst, *target_obj;
393 const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
394 uint8_t *bin, buf[128];
397 if (!o || !target_obj)
398 return AVERROR_OPTION_NOT_FOUND;
400 dst = (uint8_t*)target_obj + o->offset;
404 case AV_OPT_TYPE_FLAGS: ret = snprintf(buf, sizeof(buf), "0x%08X", *(int *)dst);break;
405 case AV_OPT_TYPE_INT: ret = snprintf(buf, sizeof(buf), "%d" , *(int *)dst);break;
406 case AV_OPT_TYPE_INT64: ret = snprintf(buf, sizeof(buf), "%"PRId64, *(int64_t*)dst);break;
407 case AV_OPT_TYPE_FLOAT: ret = snprintf(buf, sizeof(buf), "%f" , *(float *)dst);break;
408 case AV_OPT_TYPE_DOUBLE: ret = snprintf(buf, sizeof(buf), "%f" , *(double *)dst);break;
409 case AV_OPT_TYPE_RATIONAL: ret = snprintf(buf, sizeof(buf), "%d/%d", ((AVRational*)dst)->num, ((AVRational*)dst)->den);break;
410 case AV_OPT_TYPE_STRING:
412 *out_val = av_strdup(*(uint8_t**)dst);
414 *out_val = av_strdup("");
416 case AV_OPT_TYPE_BINARY:
417 len = *(int*)(((uint8_t *)dst) + sizeof(uint8_t *));
418 if ((uint64_t)len*2 + 1 > INT_MAX)
419 return AVERROR(EINVAL);
420 if (!(*out_val = av_malloc(len*2 + 1)))
421 return AVERROR(ENOMEM);
422 bin = *(uint8_t**)dst;
423 for (i = 0; i < len; i++)
424 snprintf(*out_val + i*2, 3, "%02X", bin[i]);
427 return AVERROR(EINVAL);
430 if (ret >= sizeof(buf))
431 return AVERROR(EINVAL);
432 *out_val = av_strdup(buf);
436 static int get_number(void *obj, const char *name, const AVOption **o_out, double *num, int *den, int64_t *intnum,
439 void *dst, *target_obj;
440 const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
441 if (!o || !target_obj)
444 dst = ((uint8_t*)target_obj) + o->offset;
446 if (o_out) *o_out= o;
448 return read_number(o, dst, num, den, intnum);
455 #if FF_API_OLD_AVOPTIONS
456 double av_get_double(void *obj, const char *name, const AVOption **o_out)
462 if (get_number(obj, name, o_out, &num, &den, &intnum, 0) < 0)
464 return num*intnum/den;
467 AVRational av_get_q(void *obj, const char *name, const AVOption **o_out)
473 if (get_number(obj, name, o_out, &num, &den, &intnum, 0) < 0)
474 return (AVRational){0, 0};
475 if (num == 1.0 && (int)intnum == intnum)
476 return (AVRational){intnum, den};
478 return av_d2q(num*intnum/den, 1<<24);
481 int64_t av_get_int(void *obj, const char *name, const AVOption **o_out)
487 if (get_number(obj, name, o_out, &num, &den, &intnum, 0) < 0)
489 return num*intnum/den;
493 int av_opt_get_int(void *obj, const char *name, int search_flags, int64_t *out_val)
499 if ((ret = get_number(obj, name, NULL, &num, &den, &intnum, search_flags)) < 0)
501 *out_val = num*intnum/den;
505 int av_opt_get_double(void *obj, const char *name, int search_flags, double *out_val)
511 if ((ret = get_number(obj, name, NULL, &num, &den, &intnum, search_flags)) < 0)
513 *out_val = num*intnum/den;
517 int av_opt_get_q(void *obj, const char *name, int search_flags, AVRational *out_val)
523 if ((ret = get_number(obj, name, NULL, &num, &den, &intnum, search_flags)) < 0)
526 if (num == 1.0 && (int)intnum == intnum)
527 *out_val = (AVRational){intnum, den};
529 *out_val = av_d2q(num*intnum/den, 1<<24);
533 int av_opt_flag_is_set(void *obj, const char *field_name, const char *flag_name)
535 const AVOption *field = av_opt_find(obj, field_name, NULL, 0, 0);
536 const AVOption *flag = av_opt_find(obj, flag_name,
537 field ? field->unit : NULL, 0, 0);
540 if (!field || !flag || flag->type != AV_OPT_TYPE_CONST ||
541 av_opt_get_int(obj, field_name, 0, &res) < 0)
543 return res & (int) flag->default_val.dbl;
546 static void opt_list(void *obj, void *av_log_obj, const char *unit,
547 int req_flags, int rej_flags)
549 const AVOption *opt=NULL;
551 while ((opt = av_opt_next(obj, opt))) {
552 if (!(opt->flags & req_flags) || (opt->flags & rej_flags))
555 /* Don't print CONST's on level one.
556 * Don't print anything but CONST's on level two.
557 * Only print items from the requested unit.
559 if (!unit && opt->type==AV_OPT_TYPE_CONST)
561 else if (unit && opt->type!=AV_OPT_TYPE_CONST)
563 else if (unit && opt->type==AV_OPT_TYPE_CONST && strcmp(unit, opt->unit))
565 else if (unit && opt->type == AV_OPT_TYPE_CONST)
566 av_log(av_log_obj, AV_LOG_INFO, " %-15s ", opt->name);
568 av_log(av_log_obj, AV_LOG_INFO, "-%-17s ", opt->name);
571 case AV_OPT_TYPE_FLAGS:
572 av_log(av_log_obj, AV_LOG_INFO, "%-7s ", "<flags>");
574 case AV_OPT_TYPE_INT:
575 av_log(av_log_obj, AV_LOG_INFO, "%-7s ", "<int>");
577 case AV_OPT_TYPE_INT64:
578 av_log(av_log_obj, AV_LOG_INFO, "%-7s ", "<int64>");
580 case AV_OPT_TYPE_DOUBLE:
581 av_log(av_log_obj, AV_LOG_INFO, "%-7s ", "<double>");
583 case AV_OPT_TYPE_FLOAT:
584 av_log(av_log_obj, AV_LOG_INFO, "%-7s ", "<float>");
586 case AV_OPT_TYPE_STRING:
587 av_log(av_log_obj, AV_LOG_INFO, "%-7s ", "<string>");
589 case AV_OPT_TYPE_RATIONAL:
590 av_log(av_log_obj, AV_LOG_INFO, "%-7s ", "<rational>");
592 case AV_OPT_TYPE_BINARY:
593 av_log(av_log_obj, AV_LOG_INFO, "%-7s ", "<binary>");
595 case AV_OPT_TYPE_CONST:
597 av_log(av_log_obj, AV_LOG_INFO, "%-7s ", "");
600 av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_ENCODING_PARAM) ? 'E' : '.');
601 av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_DECODING_PARAM) ? 'D' : '.');
602 av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_VIDEO_PARAM ) ? 'V' : '.');
603 av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_AUDIO_PARAM ) ? 'A' : '.');
604 av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_SUBTITLE_PARAM) ? 'S' : '.');
607 av_log(av_log_obj, AV_LOG_INFO, " %s", opt->help);
608 av_log(av_log_obj, AV_LOG_INFO, "\n");
609 if (opt->unit && opt->type != AV_OPT_TYPE_CONST) {
610 opt_list(obj, av_log_obj, opt->unit, req_flags, rej_flags);
615 int av_opt_show2(void *obj, void *av_log_obj, int req_flags, int rej_flags)
620 av_log(av_log_obj, AV_LOG_INFO, "%s AVOptions:\n", (*(AVClass**)obj)->class_name);
622 opt_list(obj, av_log_obj, NULL, req_flags, rej_flags);
627 void av_opt_set_defaults(void *s)
629 #if FF_API_OLD_AVOPTIONS
630 av_opt_set_defaults2(s, 0, 0);
633 void av_opt_set_defaults2(void *s, int mask, int flags)
636 const AVOption *opt = NULL;
637 while ((opt = av_opt_next(s, opt)) != NULL) {
638 #if FF_API_OLD_AVOPTIONS
639 if ((opt->flags & mask) != flags)
643 case AV_OPT_TYPE_CONST:
644 /* Nothing to be done here */
646 case AV_OPT_TYPE_FLAGS:
647 case AV_OPT_TYPE_INT: {
649 val = opt->default_val.dbl;
650 av_opt_set_int(s, opt->name, val, 0);
653 case AV_OPT_TYPE_INT64:
654 if ((double)(opt->default_val.dbl+0.6) == opt->default_val.dbl)
655 av_log(s, AV_LOG_DEBUG, "loss of precision in default of %s\n", opt->name);
656 av_opt_set_int(s, opt->name, opt->default_val.dbl, 0);
658 case AV_OPT_TYPE_DOUBLE:
659 case AV_OPT_TYPE_FLOAT: {
661 val = opt->default_val.dbl;
662 av_opt_set_double(s, opt->name, val, 0);
665 case AV_OPT_TYPE_RATIONAL: {
667 val = av_d2q(opt->default_val.dbl, INT_MAX);
668 av_opt_set_q(s, opt->name, val, 0);
671 case AV_OPT_TYPE_STRING:
672 av_opt_set(s, opt->name, opt->default_val.str, 0);
674 case AV_OPT_TYPE_BINARY:
675 /* Cannot set default for binary */
678 av_log(s, AV_LOG_DEBUG, "AVOption type %d of option %s not implemented yet\n", opt->type, opt->name);
684 * Store the value in the field in ctx that is named like key.
685 * ctx must be an AVClass context, storing is done using AVOptions.
687 * @param buf the string to parse, buf will be updated to point at the
688 * separator just after the parsed key/value pair
689 * @param key_val_sep a 0-terminated list of characters used to
690 * separate key from value
691 * @param pairs_sep a 0-terminated list of characters used to separate
692 * two pairs from each other
693 * @return 0 if the key/value pair has been successfully parsed and
694 * set, or a negative value corresponding to an AVERROR code in case
696 * AVERROR(EINVAL) if the key/value pair cannot be parsed,
697 * the error code issued by av_opt_set() if the key/value pair
700 static int parse_key_value_pair(void *ctx, const char **buf,
701 const char *key_val_sep, const char *pairs_sep)
703 char *key = av_get_token(buf, key_val_sep);
707 if (*key && strspn(*buf, key_val_sep)) {
709 val = av_get_token(buf, pairs_sep);
711 av_log(ctx, AV_LOG_ERROR, "Missing key or no key/value separator found after key '%s'\n", key);
713 return AVERROR(EINVAL);
716 av_log(ctx, AV_LOG_DEBUG, "Setting value '%s' for key '%s'\n", val, key);
718 ret = av_opt_set(ctx, key, val, 0);
719 if (ret == AVERROR_OPTION_NOT_FOUND)
720 av_log(ctx, AV_LOG_ERROR, "Key '%s' not found.\n", key);
727 int av_set_options_string(void *ctx, const char *opts,
728 const char *key_val_sep, const char *pairs_sep)
736 if ((ret = parse_key_value_pair(ctx, &opts, key_val_sep, pairs_sep)) < 0)
747 void av_opt_free(void *obj)
749 const AVOption *o = NULL;
750 while ((o = av_opt_next(obj, o)))
751 if (o->type == AV_OPT_TYPE_STRING || o->type == AV_OPT_TYPE_BINARY)
752 av_freep((uint8_t *)obj + o->offset);
755 int av_opt_set_dict(void *obj, AVDictionary **options)
757 AVDictionaryEntry *t = NULL;
758 AVDictionary *tmp = NULL;
761 while ((t = av_dict_get(*options, "", t, AV_DICT_IGNORE_SUFFIX))) {
762 ret = av_opt_set(obj, t->key, t->value, 0);
763 if (ret == AVERROR_OPTION_NOT_FOUND)
764 av_dict_set(&tmp, t->key, t->value, 0);
766 av_log(obj, AV_LOG_ERROR, "Error setting option %s to value %s.\n", t->key, t->value);
771 av_dict_free(options);
776 const AVOption *av_opt_find(void *obj, const char *name, const char *unit,
777 int opt_flags, int search_flags)
779 return av_opt_find2(obj, name, unit, opt_flags, search_flags, NULL);
782 const AVOption *av_opt_find2(void *obj, const char *name, const char *unit,
783 int opt_flags, int search_flags, void **target_obj)
785 const AVClass *c = *(AVClass**)obj;
786 const AVOption *o = NULL;
788 if (search_flags & AV_OPT_SEARCH_CHILDREN) {
789 if (search_flags & AV_OPT_SEARCH_FAKE_OBJ) {
790 const AVClass *child = NULL;
791 while (child = av_opt_child_class_next(c, child))
792 if (o = av_opt_find2(&child, name, unit, opt_flags, search_flags, NULL))
796 while (child = av_opt_child_next(obj, child))
797 if (o = av_opt_find2(child, name, unit, opt_flags, search_flags, target_obj))
802 while (o = av_opt_next(obj, o)) {
803 if (!strcmp(o->name, name) && (o->flags & opt_flags) == opt_flags &&
804 ((!unit && o->type != AV_OPT_TYPE_CONST) ||
805 (unit && o->unit && !strcmp(o->unit, unit)))) {
807 if (!(search_flags & AV_OPT_SEARCH_FAKE_OBJ))
818 void *av_opt_child_next(void *obj, void *prev)
820 const AVClass *c = *(AVClass**)obj;
822 return c->child_next(obj, prev);
826 const AVClass *av_opt_child_class_next(const AVClass *parent, const AVClass *prev)
828 if (parent->child_class_next)
829 return parent->child_class_next(prev);
837 typedef struct TestContext
839 const AVClass *class;
847 #define OFFSET(x) offsetof(TestContext, x)
849 #define TEST_FLAG_COOL 01
850 #define TEST_FLAG_LAME 02
851 #define TEST_FLAG_MU 04
853 static const AVOption test_options[]= {
854 {"num", "set num", OFFSET(num), AV_OPT_TYPE_INT, {0}, 0, 100 },
855 {"toggle", "set toggle", OFFSET(toggle), AV_OPT_TYPE_INT, {0}, 0, 1 },
856 {"rational", "set rational", OFFSET(rational), AV_OPT_TYPE_RATIONAL, {0}, 0, 10 },
857 {"string", "set string", OFFSET(string), AV_OPT_TYPE_STRING, {0}, CHAR_MIN, CHAR_MAX },
858 {"flags", "set flags", OFFSET(flags), AV_OPT_TYPE_FLAGS, {0}, 0, INT_MAX, 0, "flags" },
859 {"cool", "set cool flag ", 0, AV_OPT_TYPE_CONST, {TEST_FLAG_COOL}, INT_MIN, INT_MAX, 0, "flags" },
860 {"lame", "set lame flag ", 0, AV_OPT_TYPE_CONST, {TEST_FLAG_LAME}, INT_MIN, INT_MAX, 0, "flags" },
861 {"mu", "set mu flag ", 0, AV_OPT_TYPE_CONST, {TEST_FLAG_MU}, INT_MIN, INT_MAX, 0, "flags" },
865 static const char *test_get_name(void *ctx)
870 static const AVClass test_class = {
880 printf("\nTesting av_set_options_string()\n");
882 TestContext test_ctx;
883 const char *options[] = {
899 "flags=+mu-lame : num=42: toggle=0",
900 "num=42 : string=blahblah",
901 "rational=0 : rational=1/2 : rational=1/-1",
905 test_ctx.class = &test_class;
906 av_opt_set_defaults(&test_ctx);
907 test_ctx.string = av_strdup("default");
909 av_log_set_level(AV_LOG_DEBUG);
911 for (i=0; i < FF_ARRAY_ELEMS(options); i++) {
912 av_log(&test_ctx, AV_LOG_DEBUG, "Setting options string '%s'\n", options[i]);
913 if (av_set_options_string(&test_ctx, options[i], "=", ":") < 0)
914 av_log(&test_ctx, AV_LOG_ERROR, "Error setting options string: '%s'\n", options[i]);