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>
31 #include "channel_layout.h"
36 #include "parseutils.h"
38 #include "mathematics.h"
40 #include "samplefmt.h"
45 const AVOption *av_opt_next(const void *obj, const AVOption *last)
50 class = *(const AVClass**)obj;
51 if (!last && class && class->option && class->option[0].name)
53 if (last && last[1].name)
58 static int read_number(const AVOption *o, const void *dst, double *num, int *den, int64_t *intnum)
61 case AV_OPT_TYPE_FLAGS:
62 *intnum = *(unsigned int*)dst;
64 case AV_OPT_TYPE_PIXEL_FMT:
65 *intnum = *(enum AVPixelFormat *)dst;
67 case AV_OPT_TYPE_SAMPLE_FMT:
68 *intnum = *(enum AVSampleFormat *)dst;
70 case AV_OPT_TYPE_BOOL:
72 *intnum = *(int *)dst;
74 case AV_OPT_TYPE_CHANNEL_LAYOUT:
75 case AV_OPT_TYPE_DURATION:
76 case AV_OPT_TYPE_INT64:
77 *intnum = *(int64_t *)dst;
79 case AV_OPT_TYPE_FLOAT:
82 case AV_OPT_TYPE_DOUBLE:
83 *num = *(double *)dst;
85 case AV_OPT_TYPE_RATIONAL:
86 *intnum = ((AVRational *)dst)->num;
87 *den = ((AVRational *)dst)->den;
89 case AV_OPT_TYPE_CONST:
90 *num = o->default_val.dbl;
93 return AVERROR(EINVAL);
96 static int write_number(void *obj, const AVOption *o, void *dst, double num, int den, int64_t intnum)
98 if (o->type != AV_OPT_TYPE_FLAGS &&
99 (o->max * den < num * intnum || o->min * den > num * intnum)) {
100 num = den ? num * intnum / den : (num * intnum ? INFINITY : NAN);
101 av_log(obj, AV_LOG_ERROR, "Value %f for parameter '%s' out of range [%g - %g]\n",
102 num, o->name, o->min, o->max);
103 return AVERROR(ERANGE);
105 if (o->type == AV_OPT_TYPE_FLAGS) {
106 double d = num*intnum/den;
107 if (d < -1.5 || d > 0xFFFFFFFF+0.5 || (llrint(d*256) & 255)) {
108 av_log(obj, AV_LOG_ERROR,
109 "Value %f for parameter '%s' is not a valid set of 32bit integer flags\n",
110 num*intnum/den, o->name);
111 return AVERROR(ERANGE);
116 case AV_OPT_TYPE_PIXEL_FMT:
117 *(enum AVPixelFormat *)dst = llrint(num / den) * intnum;
119 case AV_OPT_TYPE_SAMPLE_FMT:
120 *(enum AVSampleFormat *)dst = llrint(num / den) * intnum;
122 case AV_OPT_TYPE_BOOL:
123 case AV_OPT_TYPE_FLAGS:
124 case AV_OPT_TYPE_INT:
125 *(int *)dst = llrint(num / den) * intnum;
127 case AV_OPT_TYPE_DURATION:
128 case AV_OPT_TYPE_CHANNEL_LAYOUT:
129 case AV_OPT_TYPE_INT64:
130 *(int64_t *)dst = llrint(num / den) * intnum;
132 case AV_OPT_TYPE_FLOAT:
133 *(float *)dst = num * intnum / den;
135 case AV_OPT_TYPE_DOUBLE:
136 *(double *)dst = num * intnum / den;
138 case AV_OPT_TYPE_RATIONAL:
139 case AV_OPT_TYPE_VIDEO_RATE:
140 if ((int) num == num)
141 *(AVRational *)dst = (AVRational) { num *intnum, den };
143 *(AVRational *)dst = av_d2q(num * intnum / den, 1 << 24);
146 return AVERROR(EINVAL);
151 static int hexchar2int(char c) {
152 if (c >= '0' && c <= '9')
154 if (c >= 'a' && c <= 'f')
156 if (c >= 'A' && c <= 'F')
161 static int set_string_binary(void *obj, const AVOption *o, const char *val, uint8_t **dst)
163 int *lendst = (int *)(dst + 1);
170 if (!val || !(len = strlen(val)))
174 return AVERROR(EINVAL);
177 ptr = bin = av_malloc(len);
179 return AVERROR(ENOMEM);
181 int a = hexchar2int(*val++);
182 int b = hexchar2int(*val++);
183 if (a < 0 || b < 0) {
185 return AVERROR(EINVAL);
187 *ptr++ = (a << 4) | b;
195 static int set_string(void *obj, const AVOption *o, const char *val, uint8_t **dst)
198 *dst = av_strdup(val);
199 return *dst ? 0 : AVERROR(ENOMEM);
202 #define DEFAULT_NUMVAL(opt) ((opt->type == AV_OPT_TYPE_INT64 || \
203 opt->type == AV_OPT_TYPE_CONST || \
204 opt->type == AV_OPT_TYPE_FLAGS || \
205 opt->type == AV_OPT_TYPE_INT) \
206 ? opt->default_val.i64 \
207 : opt->default_val.dbl)
209 static int set_string_number(void *obj, void *target_obj, const AVOption *o, const char *val, void *dst)
215 if (sscanf(val, "%d%*1[:/]%d%c", &num, &den, &c) == 2) {
216 if ((ret = write_number(obj, o, dst, 1, den, num)) >= 0)
228 if (o->type == AV_OPT_TYPE_FLAGS) {
229 if (*val == '+' || *val == '-')
231 for (; i < sizeof(buf) - 1 && val[i] && val[i] != '+' && val[i] != '-'; i++)
237 const AVOption *o_named = av_opt_find(target_obj, i ? buf : val, o->unit, 0, 0);
240 double const_values[64];
241 const char * const_names[64];
242 if (o_named && o_named->type == AV_OPT_TYPE_CONST)
243 d = DEFAULT_NUMVAL(o_named);
246 for (o_named = NULL; o_named = av_opt_next(target_obj, o_named); ) {
247 if (o_named->type == AV_OPT_TYPE_CONST &&
249 !strcmp(o_named->unit, o->unit)) {
250 if (ci + 6 >= FF_ARRAY_ELEMS(const_values)) {
251 av_log(obj, AV_LOG_ERROR, "const_values array too small for %s\n", o->unit);
252 return AVERROR_PATCHWELCOME;
254 const_names [ci ] = o_named->name;
255 const_values[ci++] = DEFAULT_NUMVAL(o_named);
259 const_names [ci ] = "default";
260 const_values[ci++] = DEFAULT_NUMVAL(o);
261 const_names [ci ] = "max";
262 const_values[ci++] = o->max;
263 const_names [ci ] = "min";
264 const_values[ci++] = o->min;
265 const_names [ci ] = "none";
266 const_values[ci++] = 0;
267 const_names [ci ] = "all";
268 const_values[ci++] = ~0;
269 const_names [ci] = NULL;
270 const_values[ci] = 0;
272 res = av_expr_parse_and_eval(&d, i ? buf : val, const_names,
273 const_values, NULL, NULL, NULL, NULL, NULL, 0, obj);
275 av_log(obj, AV_LOG_ERROR, "Unable to parse option value \"%s\"\n", val);
280 if (o->type == AV_OPT_TYPE_FLAGS) {
281 read_number(o, dst, NULL, NULL, &intnum);
283 d = intnum | (int64_t)d;
285 d = intnum &~(int64_t)d;
288 if ((ret = write_number(obj, o, dst, d, 1, 1)) < 0)
298 static int set_string_image_size(void *obj, const AVOption *o, const char *val, int *dst)
302 if (!val || !strcmp(val, "none")) {
307 ret = av_parse_video_size(dst, dst + 1, val);
309 av_log(obj, AV_LOG_ERROR, "Unable to parse option value \"%s\" as image size\n", val);
313 static int set_string_video_rate(void *obj, const AVOption *o, const char *val, AVRational *dst)
317 ret = AVERROR(EINVAL);
319 ret = av_parse_video_rate(dst, val);
322 av_log(obj, AV_LOG_ERROR, "Unable to parse option value \"%s\" as video rate\n", val);
326 static int set_string_color(void *obj, const AVOption *o, const char *val, uint8_t *dst)
333 ret = av_parse_color(dst, val, -1, obj);
335 av_log(obj, AV_LOG_ERROR, "Unable to parse option value \"%s\" as color\n", val);
341 static const char *get_bool_name(int val)
345 return val ? "true" : "false";
348 static int set_string_bool(void *obj, const AVOption *o, const char *val, int *dst)
355 if (!strcmp(val, "auto")) {
357 } else if (av_match_name(val, "true,y,yes,enable,enabled,on")) {
359 } else if (av_match_name(val, "false,n,no,disable,disabled,off")) {
363 n = strtol(val, &end, 10);
364 if (val + strlen(val) != end)
368 if (n < o->min || n > o->max)
375 av_log(obj, AV_LOG_ERROR, "Unable to parse option value \"%s\" as boolean\n", val);
376 return AVERROR(EINVAL);
379 static int set_string_fmt(void *obj, const AVOption *o, const char *val, uint8_t *dst,
380 int fmt_nb, int ((*get_fmt)(const char *)), const char *desc)
384 if (!val || !strcmp(val, "none")) {
390 fmt = strtol(val, &tail, 0);
391 if (*tail || (unsigned)fmt >= fmt_nb) {
392 av_log(obj, AV_LOG_ERROR,
393 "Unable to parse option value \"%s\" as %s\n", val, desc);
394 return AVERROR(EINVAL);
399 min = FFMAX(o->min, -1);
400 max = FFMIN(o->max, fmt_nb-1);
402 // hack for compatibility with old ffmpeg
403 if(min == 0 && max == 0) {
408 if (fmt < min || fmt > max) {
409 av_log(obj, AV_LOG_ERROR,
410 "Value %d for parameter '%s' out of %s format range [%d - %d]\n",
411 fmt, o->name, desc, min, max);
412 return AVERROR(ERANGE);
419 static int set_string_pixel_fmt(void *obj, const AVOption *o, const char *val, uint8_t *dst)
421 return set_string_fmt(obj, o, val, dst,
422 AV_PIX_FMT_NB, av_get_pix_fmt, "pixel format");
425 static int set_string_sample_fmt(void *obj, const AVOption *o, const char *val, uint8_t *dst)
427 return set_string_fmt(obj, o, val, dst,
428 AV_SAMPLE_FMT_NB, av_get_sample_fmt, "sample format");
431 int av_opt_set(void *obj, const char *name, const char *val, int search_flags)
434 void *dst, *target_obj;
435 const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
436 if (!o || !target_obj)
437 return AVERROR_OPTION_NOT_FOUND;
438 if (!val && (o->type != AV_OPT_TYPE_STRING &&
439 o->type != AV_OPT_TYPE_PIXEL_FMT && o->type != AV_OPT_TYPE_SAMPLE_FMT &&
440 o->type != AV_OPT_TYPE_IMAGE_SIZE && o->type != AV_OPT_TYPE_VIDEO_RATE &&
441 o->type != AV_OPT_TYPE_DURATION && o->type != AV_OPT_TYPE_COLOR &&
442 o->type != AV_OPT_TYPE_CHANNEL_LAYOUT && o->type != AV_OPT_TYPE_BOOL))
443 return AVERROR(EINVAL);
445 if (o->flags & AV_OPT_FLAG_READONLY)
446 return AVERROR(EINVAL);
448 dst = ((uint8_t *)target_obj) + o->offset;
450 case AV_OPT_TYPE_BOOL:
451 return set_string_bool(obj, o, val, dst);
452 case AV_OPT_TYPE_STRING:
453 return set_string(obj, o, val, dst);
454 case AV_OPT_TYPE_BINARY:
455 return set_string_binary(obj, o, val, dst);
456 case AV_OPT_TYPE_FLAGS:
457 case AV_OPT_TYPE_INT:
458 case AV_OPT_TYPE_INT64:
459 case AV_OPT_TYPE_FLOAT:
460 case AV_OPT_TYPE_DOUBLE:
461 case AV_OPT_TYPE_RATIONAL:
462 return set_string_number(obj, target_obj, o, val, dst);
463 case AV_OPT_TYPE_IMAGE_SIZE:
464 return set_string_image_size(obj, o, val, dst);
465 case AV_OPT_TYPE_VIDEO_RATE: {
467 ret = set_string_video_rate(obj, o, val, &tmp);
470 return write_number(obj, o, dst, 1, tmp.den, tmp.num);
472 case AV_OPT_TYPE_PIXEL_FMT:
473 return set_string_pixel_fmt(obj, o, val, dst);
474 case AV_OPT_TYPE_SAMPLE_FMT:
475 return set_string_sample_fmt(obj, o, val, dst);
476 case AV_OPT_TYPE_DURATION:
481 if ((ret = av_parse_time(dst, val, 1)) < 0)
482 av_log(obj, AV_LOG_ERROR, "Unable to parse option value \"%s\" as duration\n", val);
486 case AV_OPT_TYPE_COLOR:
487 return set_string_color(obj, o, val, dst);
488 case AV_OPT_TYPE_CHANNEL_LAYOUT:
489 if (!val || !strcmp(val, "none")) {
492 int64_t cl = av_get_channel_layout(val);
494 av_log(obj, AV_LOG_ERROR, "Unable to parse option value \"%s\" as channel layout\n", val);
495 ret = AVERROR(EINVAL);
497 *(int64_t *)dst = cl;
503 av_log(obj, AV_LOG_ERROR, "Invalid option type.\n");
504 return AVERROR(EINVAL);
507 #define OPT_EVAL_NUMBER(name, opttype, vartype) \
508 int av_opt_eval_ ## name(void *obj, const AVOption *o, \
509 const char *val, vartype *name ## _out) \
511 if (!o || o->type != opttype || o->flags & AV_OPT_FLAG_READONLY) \
512 return AVERROR(EINVAL); \
513 return set_string_number(obj, obj, o, val, name ## _out); \
516 OPT_EVAL_NUMBER(flags, AV_OPT_TYPE_FLAGS, int)
517 OPT_EVAL_NUMBER(int, AV_OPT_TYPE_INT, int)
518 OPT_EVAL_NUMBER(int64, AV_OPT_TYPE_INT64, int64_t)
519 OPT_EVAL_NUMBER(float, AV_OPT_TYPE_FLOAT, float)
520 OPT_EVAL_NUMBER(double, AV_OPT_TYPE_DOUBLE, double)
521 OPT_EVAL_NUMBER(q, AV_OPT_TYPE_RATIONAL, AVRational)
523 static int set_number(void *obj, const char *name, double num, int den, int64_t intnum,
526 void *dst, *target_obj;
527 const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
529 if (!o || !target_obj)
530 return AVERROR_OPTION_NOT_FOUND;
532 if (o->flags & AV_OPT_FLAG_READONLY)
533 return AVERROR(EINVAL);
535 dst = ((uint8_t *)target_obj) + o->offset;
536 return write_number(obj, o, dst, num, den, intnum);
539 int av_opt_set_int(void *obj, const char *name, int64_t val, int search_flags)
541 return set_number(obj, name, 1, 1, val, search_flags);
544 int av_opt_set_double(void *obj, const char *name, double val, int search_flags)
546 return set_number(obj, name, val, 1, 1, search_flags);
549 int av_opt_set_q(void *obj, const char *name, AVRational val, int search_flags)
551 return set_number(obj, name, val.num, val.den, 1, search_flags);
554 int av_opt_set_bin(void *obj, const char *name, const uint8_t *val, int len, int search_flags)
557 const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
562 if (!o || !target_obj)
563 return AVERROR_OPTION_NOT_FOUND;
565 if (o->type != AV_OPT_TYPE_BINARY || o->flags & AV_OPT_FLAG_READONLY)
566 return AVERROR(EINVAL);
568 ptr = len ? av_malloc(len) : NULL;
570 return AVERROR(ENOMEM);
572 dst = (uint8_t **)(((uint8_t *)target_obj) + o->offset);
573 lendst = (int *)(dst + 1);
579 memcpy(ptr, val, len);
584 int av_opt_set_image_size(void *obj, const char *name, int w, int h, int search_flags)
587 const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
589 if (!o || !target_obj)
590 return AVERROR_OPTION_NOT_FOUND;
591 if (o->type != AV_OPT_TYPE_IMAGE_SIZE) {
592 av_log(obj, AV_LOG_ERROR,
593 "The value set by option '%s' is not an image size.\n", o->name);
594 return AVERROR(EINVAL);
597 av_log(obj, AV_LOG_ERROR,
598 "Invalid negative size value %dx%d for size '%s'\n", w, h, o->name);
599 return AVERROR(EINVAL);
601 *(int *)(((uint8_t *)target_obj) + o->offset) = w;
602 *(int *)(((uint8_t *)target_obj+sizeof(int)) + o->offset) = h;
606 int av_opt_set_video_rate(void *obj, const char *name, AVRational val, int search_flags)
609 const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
611 if (!o || !target_obj)
612 return AVERROR_OPTION_NOT_FOUND;
613 if (o->type != AV_OPT_TYPE_VIDEO_RATE) {
614 av_log(obj, AV_LOG_ERROR,
615 "The value set by option '%s' is not a video rate.\n", o->name);
616 return AVERROR(EINVAL);
618 if (val.num <= 0 || val.den <= 0)
619 return AVERROR(EINVAL);
620 return set_number(obj, name, val.num, val.den, 1, search_flags);
623 static int set_format(void *obj, const char *name, int fmt, int search_flags,
624 enum AVOptionType type, const char *desc, int nb_fmts)
627 const AVOption *o = av_opt_find2(obj, name, NULL, 0,
628 search_flags, &target_obj);
631 if (!o || !target_obj)
632 return AVERROR_OPTION_NOT_FOUND;
633 if (o->type != type) {
634 av_log(obj, AV_LOG_ERROR,
635 "The value set by option '%s' is not a %s format", name, desc);
636 return AVERROR(EINVAL);
639 min = FFMAX(o->min, -1);
640 max = FFMIN(o->max, nb_fmts-1);
642 if (fmt < min || fmt > max) {
643 av_log(obj, AV_LOG_ERROR,
644 "Value %d for parameter '%s' out of %s format range [%d - %d]\n",
645 fmt, name, desc, min, max);
646 return AVERROR(ERANGE);
648 *(int *)(((uint8_t *)target_obj) + o->offset) = fmt;
652 int av_opt_set_pixel_fmt(void *obj, const char *name, enum AVPixelFormat fmt, int search_flags)
654 return set_format(obj, name, fmt, search_flags, AV_OPT_TYPE_PIXEL_FMT, "pixel", AV_PIX_FMT_NB);
657 int av_opt_set_sample_fmt(void *obj, const char *name, enum AVSampleFormat fmt, int search_flags)
659 return set_format(obj, name, fmt, search_flags, AV_OPT_TYPE_SAMPLE_FMT, "sample", AV_SAMPLE_FMT_NB);
662 int av_opt_set_channel_layout(void *obj, const char *name, int64_t cl, int search_flags)
665 const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
667 if (!o || !target_obj)
668 return AVERROR_OPTION_NOT_FOUND;
669 if (o->type != AV_OPT_TYPE_CHANNEL_LAYOUT) {
670 av_log(obj, AV_LOG_ERROR,
671 "The value set by option '%s' is not a channel layout.\n", o->name);
672 return AVERROR(EINVAL);
674 *(int64_t *)(((uint8_t *)target_obj) + o->offset) = cl;
678 int av_opt_set_dict_val(void *obj, const char *name, const AVDictionary *val,
683 const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
685 if (!o || !target_obj)
686 return AVERROR_OPTION_NOT_FOUND;
687 if (o->flags & AV_OPT_FLAG_READONLY)
688 return AVERROR(EINVAL);
690 dst = (AVDictionary **)(((uint8_t *)target_obj) + o->offset);
692 av_dict_copy(dst, val, 0);
697 static void format_duration(char *buf, size_t size, int64_t d)
701 av_assert0(size >= 25);
702 if (d < 0 && d != INT64_MIN) {
708 snprintf(buf, size, "INT64_MAX");
709 else if (d == INT64_MIN)
710 snprintf(buf, size, "INT64_MIN");
711 else if (d > (int64_t)3600*1000000)
712 snprintf(buf, size, "%"PRId64":%02d:%02d.%06d", d / 3600000000,
713 (int)((d / 60000000) % 60),
714 (int)((d / 1000000) % 60),
716 else if (d > 60*1000000)
717 snprintf(buf, size, "%d:%02d.%06d",
719 (int)((d / 1000000) % 60),
722 snprintf(buf, size, "%d.%06d",
725 e = buf + strlen(buf);
726 while (e > buf && e[-1] == '0')
728 if (e > buf && e[-1] == '.')
732 int av_opt_get(void *obj, const char *name, int search_flags, uint8_t **out_val)
734 void *dst, *target_obj;
735 const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
736 uint8_t *bin, buf[128];
740 if (!o || !target_obj || (o->offset<=0 && o->type != AV_OPT_TYPE_CONST))
741 return AVERROR_OPTION_NOT_FOUND;
743 dst = (uint8_t *)target_obj + o->offset;
747 case AV_OPT_TYPE_BOOL:
748 ret = snprintf(buf, sizeof(buf), "%s", (char *)av_x_if_null(get_bool_name(*(int *)dst), "invalid"));
750 case AV_OPT_TYPE_FLAGS:
751 ret = snprintf(buf, sizeof(buf), "0x%08X", *(int *)dst);
753 case AV_OPT_TYPE_INT:
754 ret = snprintf(buf, sizeof(buf), "%d", *(int *)dst);
756 case AV_OPT_TYPE_INT64:
757 ret = snprintf(buf, sizeof(buf), "%"PRId64, *(int64_t *)dst);
759 case AV_OPT_TYPE_FLOAT:
760 ret = snprintf(buf, sizeof(buf), "%f", *(float *)dst);
762 case AV_OPT_TYPE_DOUBLE:
763 ret = snprintf(buf, sizeof(buf), "%f", *(double *)dst);
765 case AV_OPT_TYPE_VIDEO_RATE:
766 case AV_OPT_TYPE_RATIONAL:
767 ret = snprintf(buf, sizeof(buf), "%d/%d", ((AVRational *)dst)->num, ((AVRational *)dst)->den);
769 case AV_OPT_TYPE_CONST:
770 ret = snprintf(buf, sizeof(buf), "%f", o->default_val.dbl);
772 case AV_OPT_TYPE_STRING:
773 if (*(uint8_t **)dst) {
774 *out_val = av_strdup(*(uint8_t **)dst);
775 } else if (search_flags & AV_OPT_ALLOW_NULL) {
779 *out_val = av_strdup("");
781 return *out_val ? 0 : AVERROR(ENOMEM);
782 case AV_OPT_TYPE_BINARY:
783 if (!*(uint8_t **)dst && (search_flags & AV_OPT_ALLOW_NULL)) {
787 len = *(int *)(((uint8_t *)dst) + sizeof(uint8_t *));
788 if ((uint64_t)len * 2 + 1 > INT_MAX)
789 return AVERROR(EINVAL);
790 if (!(*out_val = av_malloc(len * 2 + 1)))
791 return AVERROR(ENOMEM);
796 bin = *(uint8_t **)dst;
797 for (i = 0; i < len; i++)
798 snprintf(*out_val + i * 2, 3, "%02X", bin[i]);
800 case AV_OPT_TYPE_IMAGE_SIZE:
801 ret = snprintf(buf, sizeof(buf), "%dx%d", ((int *)dst)[0], ((int *)dst)[1]);
803 case AV_OPT_TYPE_PIXEL_FMT:
804 ret = snprintf(buf, sizeof(buf), "%s", (char *)av_x_if_null(av_get_pix_fmt_name(*(enum AVPixelFormat *)dst), "none"));
806 case AV_OPT_TYPE_SAMPLE_FMT:
807 ret = snprintf(buf, sizeof(buf), "%s", (char *)av_x_if_null(av_get_sample_fmt_name(*(enum AVSampleFormat *)dst), "none"));
809 case AV_OPT_TYPE_DURATION:
810 i64 = *(int64_t *)dst;
811 format_duration(buf, sizeof(buf), i64);
812 ret = strlen(buf); // no overflow possible, checked by an assert
814 case AV_OPT_TYPE_COLOR:
815 ret = snprintf(buf, sizeof(buf), "0x%02x%02x%02x%02x",
816 (int)((uint8_t *)dst)[0], (int)((uint8_t *)dst)[1],
817 (int)((uint8_t *)dst)[2], (int)((uint8_t *)dst)[3]);
819 case AV_OPT_TYPE_CHANNEL_LAYOUT:
820 i64 = *(int64_t *)dst;
821 ret = snprintf(buf, sizeof(buf), "0x%"PRIx64, i64);
824 return AVERROR(EINVAL);
827 if (ret >= sizeof(buf))
828 return AVERROR(EINVAL);
829 *out_val = av_strdup(buf);
830 return *out_val ? 0 : AVERROR(ENOMEM);
833 static int get_number(void *obj, const char *name, const AVOption **o_out, double *num, int *den, int64_t *intnum,
836 void *dst, *target_obj;
837 const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
838 if (!o || !target_obj)
841 dst = ((uint8_t *)target_obj) + o->offset;
843 if (o_out) *o_out= o;
845 return read_number(o, dst, num, den, intnum);
853 int av_opt_get_int(void *obj, const char *name, int search_flags, int64_t *out_val)
859 if ((ret = get_number(obj, name, NULL, &num, &den, &intnum, search_flags)) < 0)
861 *out_val = num * intnum / den;
865 int av_opt_get_double(void *obj, const char *name, int search_flags, double *out_val)
871 if ((ret = get_number(obj, name, NULL, &num, &den, &intnum, search_flags)) < 0)
873 *out_val = num * intnum / den;
877 int av_opt_get_q(void *obj, const char *name, int search_flags, AVRational *out_val)
883 if ((ret = get_number(obj, name, NULL, &num, &den, &intnum, search_flags)) < 0)
886 if (num == 1.0 && (int)intnum == intnum)
887 *out_val = (AVRational){intnum, den};
889 *out_val = av_d2q(num*intnum/den, 1<<24);
893 int av_opt_get_image_size(void *obj, const char *name, int search_flags, int *w_out, int *h_out)
895 void *dst, *target_obj;
896 const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
897 if (!o || !target_obj)
898 return AVERROR_OPTION_NOT_FOUND;
899 if (o->type != AV_OPT_TYPE_IMAGE_SIZE) {
900 av_log(obj, AV_LOG_ERROR,
901 "The value for option '%s' is not an image size.\n", name);
902 return AVERROR(EINVAL);
905 dst = ((uint8_t*)target_obj) + o->offset;
906 if (w_out) *w_out = *(int *)dst;
907 if (h_out) *h_out = *((int *)dst+1);
911 int av_opt_get_video_rate(void *obj, const char *name, int search_flags, AVRational *out_val)
917 if ((ret = get_number(obj, name, NULL, &num, &den, &intnum, search_flags)) < 0)
920 if (num == 1.0 && (int)intnum == intnum)
921 *out_val = (AVRational) { intnum, den };
923 *out_val = av_d2q(num * intnum / den, 1 << 24);
927 static int get_format(void *obj, const char *name, int search_flags, int *out_fmt,
928 enum AVOptionType type, const char *desc)
930 void *dst, *target_obj;
931 const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
932 if (!o || !target_obj)
933 return AVERROR_OPTION_NOT_FOUND;
934 if (o->type != type) {
935 av_log(obj, AV_LOG_ERROR,
936 "The value for option '%s' is not a %s format.\n", desc, name);
937 return AVERROR(EINVAL);
940 dst = ((uint8_t*)target_obj) + o->offset;
941 *out_fmt = *(int *)dst;
945 int av_opt_get_pixel_fmt(void *obj, const char *name, int search_flags, enum AVPixelFormat *out_fmt)
947 return get_format(obj, name, search_flags, out_fmt, AV_OPT_TYPE_PIXEL_FMT, "pixel");
950 int av_opt_get_sample_fmt(void *obj, const char *name, int search_flags, enum AVSampleFormat *out_fmt)
952 return get_format(obj, name, search_flags, out_fmt, AV_OPT_TYPE_SAMPLE_FMT, "sample");
955 int av_opt_get_channel_layout(void *obj, const char *name, int search_flags, int64_t *cl)
957 void *dst, *target_obj;
958 const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
959 if (!o || !target_obj)
960 return AVERROR_OPTION_NOT_FOUND;
961 if (o->type != AV_OPT_TYPE_CHANNEL_LAYOUT) {
962 av_log(obj, AV_LOG_ERROR,
963 "The value for option '%s' is not a channel layout.\n", name);
964 return AVERROR(EINVAL);
967 dst = ((uint8_t*)target_obj) + o->offset;
968 *cl = *(int64_t *)dst;
972 int av_opt_get_dict_val(void *obj, const char *name, int search_flags, AVDictionary **out_val)
976 const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
978 if (!o || !target_obj)
979 return AVERROR_OPTION_NOT_FOUND;
980 if (o->type != AV_OPT_TYPE_DICT)
981 return AVERROR(EINVAL);
983 src = *(AVDictionary **)(((uint8_t *)target_obj) + o->offset);
984 av_dict_copy(out_val, src, 0);
989 int av_opt_flag_is_set(void *obj, const char *field_name, const char *flag_name)
991 const AVOption *field = av_opt_find(obj, field_name, NULL, 0, 0);
992 const AVOption *flag = av_opt_find(obj, flag_name,
993 field ? field->unit : NULL, 0, 0);
996 if (!field || !flag || flag->type != AV_OPT_TYPE_CONST ||
997 av_opt_get_int(obj, field_name, 0, &res) < 0)
999 return res & flag->default_val.i64;
1002 static void log_value(void *av_log_obj, int level, double d)
1005 av_log(av_log_obj, level, "INT_MAX");
1006 } else if (d == INT_MIN) {
1007 av_log(av_log_obj, level, "INT_MIN");
1008 } else if (d == UINT32_MAX) {
1009 av_log(av_log_obj, level, "UINT32_MAX");
1010 } else if (d == (double)INT64_MAX) {
1011 av_log(av_log_obj, level, "I64_MAX");
1012 } else if (d == INT64_MIN) {
1013 av_log(av_log_obj, level, "I64_MIN");
1014 } else if (d == FLT_MAX) {
1015 av_log(av_log_obj, level, "FLT_MAX");
1016 } else if (d == FLT_MIN) {
1017 av_log(av_log_obj, level, "FLT_MIN");
1018 } else if (d == -FLT_MAX) {
1019 av_log(av_log_obj, level, "-FLT_MAX");
1020 } else if (d == -FLT_MIN) {
1021 av_log(av_log_obj, level, "-FLT_MIN");
1022 } else if (d == DBL_MAX) {
1023 av_log(av_log_obj, level, "DBL_MAX");
1024 } else if (d == DBL_MIN) {
1025 av_log(av_log_obj, level, "DBL_MIN");
1026 } else if (d == -DBL_MAX) {
1027 av_log(av_log_obj, level, "-DBL_MAX");
1028 } else if (d == -DBL_MIN) {
1029 av_log(av_log_obj, level, "-DBL_MIN");
1031 av_log(av_log_obj, level, "%g", d);
1035 static const char *get_opt_const_name(void *obj, const char *unit, int64_t value)
1037 const AVOption *opt = NULL;
1041 while ((opt = av_opt_next(obj, opt)))
1042 if (opt->type == AV_OPT_TYPE_CONST && !strcmp(opt->unit, unit) &&
1043 opt->default_val.i64 == value)
1048 static char *get_opt_flags_string(void *obj, const char *unit, int64_t value)
1050 const AVOption *opt = NULL;
1056 while ((opt = av_opt_next(obj, opt))) {
1057 if (opt->type == AV_OPT_TYPE_CONST && !strcmp(opt->unit, unit) &&
1058 opt->default_val.i64 & value) {
1060 av_strlcatf(flags, sizeof(flags), "+");
1061 av_strlcatf(flags, sizeof(flags), "%s", opt->name);
1065 return av_strdup(flags);
1069 static void opt_list(void *obj, void *av_log_obj, const char *unit,
1070 int req_flags, int rej_flags)
1072 const AVOption *opt = NULL;
1076 while ((opt = av_opt_next(obj, opt))) {
1077 if (!(opt->flags & req_flags) || (opt->flags & rej_flags))
1080 /* Don't print CONST's on level one.
1081 * Don't print anything but CONST's on level two.
1082 * Only print items from the requested unit.
1084 if (!unit && opt->type == AV_OPT_TYPE_CONST)
1086 else if (unit && opt->type != AV_OPT_TYPE_CONST)
1088 else if (unit && opt->type == AV_OPT_TYPE_CONST && strcmp(unit, opt->unit))
1090 else if (unit && opt->type == AV_OPT_TYPE_CONST)
1091 av_log(av_log_obj, AV_LOG_INFO, " %-15s ", opt->name);
1093 av_log(av_log_obj, AV_LOG_INFO, " %s%-17s ",
1094 (opt->flags & AV_OPT_FLAG_FILTERING_PARAM) ? "" : "-",
1097 switch (opt->type) {
1098 case AV_OPT_TYPE_FLAGS:
1099 av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<flags>");
1101 case AV_OPT_TYPE_INT:
1102 av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<int>");
1104 case AV_OPT_TYPE_INT64:
1105 av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<int64>");
1107 case AV_OPT_TYPE_DOUBLE:
1108 av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<double>");
1110 case AV_OPT_TYPE_FLOAT:
1111 av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<float>");
1113 case AV_OPT_TYPE_STRING:
1114 av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<string>");
1116 case AV_OPT_TYPE_RATIONAL:
1117 av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<rational>");
1119 case AV_OPT_TYPE_BINARY:
1120 av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<binary>");
1122 case AV_OPT_TYPE_IMAGE_SIZE:
1123 av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<image_size>");
1125 case AV_OPT_TYPE_VIDEO_RATE:
1126 av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<video_rate>");
1128 case AV_OPT_TYPE_PIXEL_FMT:
1129 av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<pix_fmt>");
1131 case AV_OPT_TYPE_SAMPLE_FMT:
1132 av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<sample_fmt>");
1134 case AV_OPT_TYPE_DURATION:
1135 av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<duration>");
1137 case AV_OPT_TYPE_COLOR:
1138 av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<color>");
1140 case AV_OPT_TYPE_CHANNEL_LAYOUT:
1141 av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<channel_layout>");
1143 case AV_OPT_TYPE_BOOL:
1144 av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<boolean>");
1146 case AV_OPT_TYPE_CONST:
1148 av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "");
1151 av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_ENCODING_PARAM) ? 'E' : '.');
1152 av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_DECODING_PARAM) ? 'D' : '.');
1153 av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_FILTERING_PARAM)? 'F' : '.');
1154 av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_VIDEO_PARAM ) ? 'V' : '.');
1155 av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_AUDIO_PARAM ) ? 'A' : '.');
1156 av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_SUBTITLE_PARAM) ? 'S' : '.');
1157 av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_EXPORT) ? 'X' : '.');
1158 av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_READONLY) ? 'R' : '.');
1161 av_log(av_log_obj, AV_LOG_INFO, " %s", opt->help);
1163 if (av_opt_query_ranges(&r, obj, opt->name, AV_OPT_SEARCH_FAKE_OBJ) >= 0) {
1164 switch (opt->type) {
1165 case AV_OPT_TYPE_INT:
1166 case AV_OPT_TYPE_INT64:
1167 case AV_OPT_TYPE_DOUBLE:
1168 case AV_OPT_TYPE_FLOAT:
1169 case AV_OPT_TYPE_RATIONAL:
1170 for (i = 0; i < r->nb_ranges; i++) {
1171 av_log(av_log_obj, AV_LOG_INFO, " (from ");
1172 log_value(av_log_obj, AV_LOG_INFO, r->range[i]->value_min);
1173 av_log(av_log_obj, AV_LOG_INFO, " to ");
1174 log_value(av_log_obj, AV_LOG_INFO, r->range[i]->value_max);
1175 av_log(av_log_obj, AV_LOG_INFO, ")");
1179 av_opt_freep_ranges(&r);
1182 if (opt->type != AV_OPT_TYPE_CONST &&
1183 opt->type != AV_OPT_TYPE_BINARY &&
1184 !((opt->type == AV_OPT_TYPE_COLOR ||
1185 opt->type == AV_OPT_TYPE_IMAGE_SIZE ||
1186 opt->type == AV_OPT_TYPE_STRING ||
1187 opt->type == AV_OPT_TYPE_VIDEO_RATE) &&
1188 !opt->default_val.str)) {
1189 av_log(av_log_obj, AV_LOG_INFO, " (default ");
1190 switch (opt->type) {
1191 case AV_OPT_TYPE_BOOL:
1192 av_log(av_log_obj, AV_LOG_INFO, "%s", (char *)av_x_if_null(get_bool_name(opt->default_val.i64), "invalid"));
1194 case AV_OPT_TYPE_FLAGS: {
1195 char *def_flags = get_opt_flags_string(obj, opt->unit, opt->default_val.i64);
1197 av_log(av_log_obj, AV_LOG_INFO, "%s", def_flags);
1198 av_freep(&def_flags);
1200 av_log(av_log_obj, AV_LOG_INFO, "%"PRIX64, opt->default_val.i64);
1204 case AV_OPT_TYPE_DURATION: {
1206 format_duration(buf, sizeof(buf), opt->default_val.i64);
1207 av_log(av_log_obj, AV_LOG_INFO, "%s", buf);
1210 case AV_OPT_TYPE_INT:
1211 case AV_OPT_TYPE_INT64: {
1212 const char *def_const = get_opt_const_name(obj, opt->unit, opt->default_val.i64);
1214 av_log(av_log_obj, AV_LOG_INFO, "%s", def_const);
1216 log_value(av_log_obj, AV_LOG_INFO, opt->default_val.i64);
1219 case AV_OPT_TYPE_DOUBLE:
1220 case AV_OPT_TYPE_FLOAT:
1221 log_value(av_log_obj, AV_LOG_INFO, opt->default_val.dbl);
1223 case AV_OPT_TYPE_RATIONAL: {
1224 AVRational q = av_d2q(opt->default_val.dbl, INT_MAX);
1225 av_log(av_log_obj, AV_LOG_INFO, "%d/%d", q.num, q.den); }
1227 case AV_OPT_TYPE_PIXEL_FMT:
1228 av_log(av_log_obj, AV_LOG_INFO, "%s", (char *)av_x_if_null(av_get_pix_fmt_name(opt->default_val.i64), "none"));
1230 case AV_OPT_TYPE_SAMPLE_FMT:
1231 av_log(av_log_obj, AV_LOG_INFO, "%s", (char *)av_x_if_null(av_get_sample_fmt_name(opt->default_val.i64), "none"));
1233 case AV_OPT_TYPE_COLOR:
1234 case AV_OPT_TYPE_IMAGE_SIZE:
1235 case AV_OPT_TYPE_STRING:
1236 case AV_OPT_TYPE_VIDEO_RATE:
1237 av_log(av_log_obj, AV_LOG_INFO, "\"%s\"", opt->default_val.str);
1239 case AV_OPT_TYPE_CHANNEL_LAYOUT:
1240 av_log(av_log_obj, AV_LOG_INFO, "0x%"PRIx64, opt->default_val.i64);
1243 av_log(av_log_obj, AV_LOG_INFO, ")");
1246 av_log(av_log_obj, AV_LOG_INFO, "\n");
1247 if (opt->unit && opt->type != AV_OPT_TYPE_CONST)
1248 opt_list(obj, av_log_obj, opt->unit, req_flags, rej_flags);
1252 int av_opt_show2(void *obj, void *av_log_obj, int req_flags, int rej_flags)
1257 av_log(av_log_obj, AV_LOG_INFO, "%s AVOptions:\n", (*(AVClass **)obj)->class_name);
1259 opt_list(obj, av_log_obj, NULL, req_flags, rej_flags);
1264 void av_opt_set_defaults(void *s)
1266 av_opt_set_defaults2(s, 0, 0);
1269 void av_opt_set_defaults2(void *s, int mask, int flags)
1271 const AVOption *opt = NULL;
1272 while ((opt = av_opt_next(s, opt))) {
1273 void *dst = ((uint8_t*)s) + opt->offset;
1275 if ((opt->flags & mask) != flags)
1278 if (opt->flags & AV_OPT_FLAG_READONLY)
1281 switch (opt->type) {
1282 case AV_OPT_TYPE_CONST:
1283 /* Nothing to be done here */
1285 case AV_OPT_TYPE_BOOL:
1286 case AV_OPT_TYPE_FLAGS:
1287 case AV_OPT_TYPE_INT:
1288 case AV_OPT_TYPE_INT64:
1289 case AV_OPT_TYPE_DURATION:
1290 case AV_OPT_TYPE_CHANNEL_LAYOUT:
1291 case AV_OPT_TYPE_PIXEL_FMT:
1292 case AV_OPT_TYPE_SAMPLE_FMT:
1293 write_number(s, opt, dst, 1, 1, opt->default_val.i64);
1295 case AV_OPT_TYPE_DOUBLE:
1296 case AV_OPT_TYPE_FLOAT: {
1298 val = opt->default_val.dbl;
1299 write_number(s, opt, dst, val, 1, 1);
1302 case AV_OPT_TYPE_RATIONAL: {
1304 val = av_d2q(opt->default_val.dbl, INT_MAX);
1305 write_number(s, opt, dst, 1, val.den, val.num);
1308 case AV_OPT_TYPE_COLOR:
1309 set_string_color(s, opt, opt->default_val.str, dst);
1311 case AV_OPT_TYPE_STRING:
1312 set_string(s, opt, opt->default_val.str, dst);
1314 case AV_OPT_TYPE_IMAGE_SIZE:
1315 set_string_image_size(s, opt, opt->default_val.str, dst);
1317 case AV_OPT_TYPE_VIDEO_RATE:
1318 set_string_video_rate(s, opt, opt->default_val.str, dst);
1320 case AV_OPT_TYPE_BINARY:
1321 set_string_binary(s, opt, opt->default_val.str, dst);
1323 case AV_OPT_TYPE_DICT:
1324 /* Cannot set defaults for these types */
1327 av_log(s, AV_LOG_DEBUG, "AVOption type %d of option %s not implemented yet\n",
1328 opt->type, opt->name);
1334 * Store the value in the field in ctx that is named like key.
1335 * ctx must be an AVClass context, storing is done using AVOptions.
1337 * @param buf the string to parse, buf will be updated to point at the
1338 * separator just after the parsed key/value pair
1339 * @param key_val_sep a 0-terminated list of characters used to
1340 * separate key from value
1341 * @param pairs_sep a 0-terminated list of characters used to separate
1342 * two pairs from each other
1343 * @return 0 if the key/value pair has been successfully parsed and
1344 * set, or a negative value corresponding to an AVERROR code in case
1346 * AVERROR(EINVAL) if the key/value pair cannot be parsed,
1347 * the error code issued by av_opt_set() if the key/value pair
1350 static int parse_key_value_pair(void *ctx, const char **buf,
1351 const char *key_val_sep, const char *pairs_sep)
1353 char *key = av_get_token(buf, key_val_sep);
1358 return AVERROR(ENOMEM);
1360 if (*key && strspn(*buf, key_val_sep)) {
1362 val = av_get_token(buf, pairs_sep);
1365 return AVERROR(ENOMEM);
1368 av_log(ctx, AV_LOG_ERROR, "Missing key or no key/value separator found after key '%s'\n", key);
1370 return AVERROR(EINVAL);
1373 av_log(ctx, AV_LOG_DEBUG, "Setting entry with key '%s' to value '%s'\n", key, val);
1375 ret = av_opt_set(ctx, key, val, AV_OPT_SEARCH_CHILDREN);
1376 if (ret == AVERROR_OPTION_NOT_FOUND)
1377 av_log(ctx, AV_LOG_ERROR, "Key '%s' not found.\n", key);
1384 int av_set_options_string(void *ctx, const char *opts,
1385 const char *key_val_sep, const char *pairs_sep)
1393 if ((ret = parse_key_value_pair(ctx, &opts, key_val_sep, pairs_sep)) < 0)
1404 #define WHITESPACES " \n\t\r"
1406 static int is_key_char(char c)
1408 return (unsigned)((c | 32) - 'a') < 26 ||
1409 (unsigned)(c - '0') < 10 ||
1410 c == '-' || c == '_' || c == '/' || c == '.';
1414 * Read a key from a string.
1416 * The key consists of is_key_char characters and must be terminated by a
1417 * character from the delim string; spaces are ignored.
1419 * @return 0 for success (even with ellipsis), <0 for failure
1421 static int get_key(const char **ropts, const char *delim, char **rkey)
1423 const char *opts = *ropts;
1424 const char *key_start, *key_end;
1426 key_start = opts += strspn(opts, WHITESPACES);
1427 while (is_key_char(*opts))
1430 opts += strspn(opts, WHITESPACES);
1431 if (!*opts || !strchr(delim, *opts))
1432 return AVERROR(EINVAL);
1434 if (!(*rkey = av_malloc(key_end - key_start + 1)))
1435 return AVERROR(ENOMEM);
1436 memcpy(*rkey, key_start, key_end - key_start);
1437 (*rkey)[key_end - key_start] = 0;
1442 int av_opt_get_key_value(const char **ropts,
1443 const char *key_val_sep, const char *pairs_sep,
1445 char **rkey, char **rval)
1448 char *key = NULL, *val;
1449 const char *opts = *ropts;
1451 if ((ret = get_key(&opts, key_val_sep, &key)) < 0 &&
1452 !(flags & AV_OPT_FLAG_IMPLICIT_KEY))
1453 return AVERROR(EINVAL);
1454 if (!(val = av_get_token(&opts, pairs_sep))) {
1456 return AVERROR(ENOMEM);
1464 int av_opt_set_from_string(void *ctx, const char *opts,
1465 const char *const *shorthand,
1466 const char *key_val_sep, const char *pairs_sep)
1469 const char *dummy_shorthand = NULL;
1470 char *av_uninit(parsed_key), *av_uninit(value);
1476 shorthand = &dummy_shorthand;
1479 ret = av_opt_get_key_value(&opts, key_val_sep, pairs_sep,
1480 *shorthand ? AV_OPT_FLAG_IMPLICIT_KEY : 0,
1481 &parsed_key, &value);
1483 if (ret == AVERROR(EINVAL))
1484 av_log(ctx, AV_LOG_ERROR, "No option name near '%s'\n", opts);
1486 av_log(ctx, AV_LOG_ERROR, "Unable to parse '%s': %s\n", opts,
1494 while (*shorthand) /* discard all remaining shorthand */
1497 key = *(shorthand++);
1500 av_log(ctx, AV_LOG_DEBUG, "Setting '%s' to value '%s'\n", key, value);
1501 if ((ret = av_opt_set(ctx, key, value, 0)) < 0) {
1502 if (ret == AVERROR_OPTION_NOT_FOUND)
1503 av_log(ctx, AV_LOG_ERROR, "Option '%s' not found\n", key);
1505 av_free(parsed_key);
1510 av_free(parsed_key);
1516 void av_opt_free(void *obj)
1518 const AVOption *o = NULL;
1519 while ((o = av_opt_next(obj, o))) {
1521 case AV_OPT_TYPE_STRING:
1522 case AV_OPT_TYPE_BINARY:
1523 av_freep((uint8_t *)obj + o->offset);
1526 case AV_OPT_TYPE_DICT:
1527 av_dict_free((AVDictionary **)(((uint8_t *)obj) + o->offset));
1536 int av_opt_set_dict2(void *obj, AVDictionary **options, int search_flags)
1538 AVDictionaryEntry *t = NULL;
1539 AVDictionary *tmp = NULL;
1545 while ((t = av_dict_get(*options, "", t, AV_DICT_IGNORE_SUFFIX))) {
1546 ret = av_opt_set(obj, t->key, t->value, search_flags);
1547 if (ret == AVERROR_OPTION_NOT_FOUND)
1548 ret = av_dict_set(&tmp, t->key, t->value, 0);
1550 av_log(obj, AV_LOG_ERROR, "Error setting option %s to value %s.\n", t->key, t->value);
1556 av_dict_free(options);
1561 int av_opt_set_dict(void *obj, AVDictionary **options)
1563 return av_opt_set_dict2(obj, options, 0);
1566 const AVOption *av_opt_find(void *obj, const char *name, const char *unit,
1567 int opt_flags, int search_flags)
1569 return av_opt_find2(obj, name, unit, opt_flags, search_flags, NULL);
1572 const AVOption *av_opt_find2(void *obj, const char *name, const char *unit,
1573 int opt_flags, int search_flags, void **target_obj)
1576 const AVOption *o = NULL;
1586 if (search_flags & AV_OPT_SEARCH_CHILDREN) {
1587 if (search_flags & AV_OPT_SEARCH_FAKE_OBJ) {
1588 const AVClass *child = NULL;
1589 while (child = av_opt_child_class_next(c, child))
1590 if (o = av_opt_find2(&child, name, unit, opt_flags, search_flags, NULL))
1594 while (child = av_opt_child_next(obj, child))
1595 if (o = av_opt_find2(child, name, unit, opt_flags, search_flags, target_obj))
1600 while (o = av_opt_next(obj, o)) {
1601 if (!strcmp(o->name, name) && (o->flags & opt_flags) == opt_flags &&
1602 ((!unit && o->type != AV_OPT_TYPE_CONST) ||
1603 (unit && o->type == AV_OPT_TYPE_CONST && o->unit && !strcmp(o->unit, unit)))) {
1605 if (!(search_flags & AV_OPT_SEARCH_FAKE_OBJ))
1616 void *av_opt_child_next(void *obj, void *prev)
1618 const AVClass *c = *(AVClass **)obj;
1620 return c->child_next(obj, prev);
1624 const AVClass *av_opt_child_class_next(const AVClass *parent, const AVClass *prev)
1626 if (parent->child_class_next)
1627 return parent->child_class_next(prev);
1631 void *av_opt_ptr(const AVClass *class, void *obj, const char *name)
1633 const AVOption *opt= av_opt_find2(&class, name, NULL, 0, AV_OPT_SEARCH_FAKE_OBJ, NULL);
1636 return (uint8_t*)obj + opt->offset;
1639 static int opt_size(enum AVOptionType type)
1642 case AV_OPT_TYPE_BOOL:
1643 case AV_OPT_TYPE_INT:
1644 case AV_OPT_TYPE_FLAGS:
1646 case AV_OPT_TYPE_DURATION:
1647 case AV_OPT_TYPE_CHANNEL_LAYOUT:
1648 case AV_OPT_TYPE_INT64:
1649 return sizeof(int64_t);
1650 case AV_OPT_TYPE_DOUBLE:
1651 return sizeof(double);
1652 case AV_OPT_TYPE_FLOAT:
1653 return sizeof(float);
1654 case AV_OPT_TYPE_STRING:
1655 return sizeof(uint8_t*);
1656 case AV_OPT_TYPE_VIDEO_RATE:
1657 case AV_OPT_TYPE_RATIONAL:
1658 return sizeof(AVRational);
1659 case AV_OPT_TYPE_BINARY:
1660 return sizeof(uint8_t*) + sizeof(int);
1661 case AV_OPT_TYPE_IMAGE_SIZE:
1662 return sizeof(int[2]);
1663 case AV_OPT_TYPE_PIXEL_FMT:
1664 return sizeof(enum AVPixelFormat);
1665 case AV_OPT_TYPE_SAMPLE_FMT:
1666 return sizeof(enum AVSampleFormat);
1667 case AV_OPT_TYPE_COLOR:
1670 return AVERROR(EINVAL);
1673 int av_opt_copy(void *dst, const void *src)
1675 const AVOption *o = NULL;
1680 return AVERROR(EINVAL);
1682 c = *(AVClass **)src;
1683 if (!c || c != *(AVClass **)dst)
1684 return AVERROR(EINVAL);
1686 while ((o = av_opt_next(src, o))) {
1687 void *field_dst = (uint8_t *)dst + o->offset;
1688 void *field_src = (uint8_t *)src + o->offset;
1689 uint8_t **field_dst8 = (uint8_t **)field_dst;
1690 uint8_t **field_src8 = (uint8_t **)field_src;
1692 if (o->type == AV_OPT_TYPE_STRING) {
1693 if (*field_dst8 != *field_src8)
1694 av_freep(field_dst8);
1695 *field_dst8 = av_strdup(*field_src8);
1696 if (*field_src8 && !*field_dst8)
1697 ret = AVERROR(ENOMEM);
1698 } else if (o->type == AV_OPT_TYPE_BINARY) {
1699 int len = *(int *)(field_src8 + 1);
1700 if (*field_dst8 != *field_src8)
1701 av_freep(field_dst8);
1702 *field_dst8 = av_memdup(*field_src8, len);
1703 if (len && !*field_dst8) {
1704 ret = AVERROR(ENOMEM);
1707 *(int *)(field_dst8 + 1) = len;
1708 } else if (o->type == AV_OPT_TYPE_CONST) {
1710 } else if (o->type == AV_OPT_TYPE_DICT) {
1711 AVDictionary **sdict = (AVDictionary **) field_src;
1712 AVDictionary **ddict = (AVDictionary **) field_dst;
1713 if (*sdict != *ddict)
1714 av_dict_free(ddict);
1716 av_dict_copy(ddict, *sdict, 0);
1717 if (av_dict_count(*sdict) != av_dict_count(*ddict))
1718 ret = AVERROR(ENOMEM);
1720 int size = opt_size(o->type);
1724 memcpy(field_dst, field_src, size);
1730 int av_opt_query_ranges(AVOptionRanges **ranges_arg, void *obj, const char *key, int flags)
1733 const AVClass *c = *(AVClass**)obj;
1734 int (*callback)(AVOptionRanges **, void *obj, const char *key, int flags) = NULL;
1736 if (c->version > (52 << 16 | 11 << 8))
1737 callback = c->query_ranges;
1740 callback = av_opt_query_ranges_default;
1742 ret = callback(ranges_arg, obj, key, flags);
1744 if (!(flags & AV_OPT_MULTI_COMPONENT_RANGE))
1746 (*ranges_arg)->nb_components = ret;
1751 int av_opt_query_ranges_default(AVOptionRanges **ranges_arg, void *obj, const char *key, int flags)
1753 AVOptionRanges *ranges = av_mallocz(sizeof(*ranges));
1754 AVOptionRange **range_array = av_mallocz(sizeof(void*));
1755 AVOptionRange *range = av_mallocz(sizeof(*range));
1756 const AVOption *field = av_opt_find(obj, key, NULL, 0, flags);
1761 if (!ranges || !range || !range_array || !field) {
1762 ret = AVERROR(ENOMEM);
1766 ranges->range = range_array;
1767 ranges->range[0] = range;
1768 ranges->nb_ranges = 1;
1769 ranges->nb_components = 1;
1770 range->is_range = 1;
1771 range->value_min = field->min;
1772 range->value_max = field->max;
1774 switch (field->type) {
1775 case AV_OPT_TYPE_BOOL:
1776 case AV_OPT_TYPE_INT:
1777 case AV_OPT_TYPE_INT64:
1778 case AV_OPT_TYPE_PIXEL_FMT:
1779 case AV_OPT_TYPE_SAMPLE_FMT:
1780 case AV_OPT_TYPE_FLOAT:
1781 case AV_OPT_TYPE_DOUBLE:
1782 case AV_OPT_TYPE_DURATION:
1783 case AV_OPT_TYPE_COLOR:
1784 case AV_OPT_TYPE_CHANNEL_LAYOUT:
1786 case AV_OPT_TYPE_STRING:
1787 range->component_min = 0;
1788 range->component_max = 0x10FFFF; // max unicode value
1789 range->value_min = -1;
1790 range->value_max = INT_MAX;
1792 case AV_OPT_TYPE_RATIONAL:
1793 range->component_min = INT_MIN;
1794 range->component_max = INT_MAX;
1796 case AV_OPT_TYPE_IMAGE_SIZE:
1797 range->component_min = 0;
1798 range->component_max = INT_MAX/128/8;
1799 range->value_min = 0;
1800 range->value_max = INT_MAX/8;
1802 case AV_OPT_TYPE_VIDEO_RATE:
1803 range->component_min = 1;
1804 range->component_max = INT_MAX;
1805 range->value_min = 1;
1806 range->value_max = INT_MAX;
1809 ret = AVERROR(ENOSYS);
1813 *ranges_arg = ranges;
1818 av_free(range_array);
1822 void av_opt_freep_ranges(AVOptionRanges **rangesp)
1825 AVOptionRanges *ranges = *rangesp;
1830 for (i = 0; i < ranges->nb_ranges * ranges->nb_components; i++) {
1831 AVOptionRange *range = ranges->range[i];
1833 av_freep(&range->str);
1834 av_freep(&ranges->range[i]);
1837 av_freep(&ranges->range);
1841 int av_opt_is_set_to_default(void *obj, const AVOption *o)
1852 return AVERROR(EINVAL);
1854 dst = ((uint8_t*)obj) + o->offset;
1857 case AV_OPT_TYPE_CONST:
1859 case AV_OPT_TYPE_BOOL:
1860 case AV_OPT_TYPE_FLAGS:
1861 case AV_OPT_TYPE_PIXEL_FMT:
1862 case AV_OPT_TYPE_SAMPLE_FMT:
1863 case AV_OPT_TYPE_INT:
1864 case AV_OPT_TYPE_CHANNEL_LAYOUT:
1865 case AV_OPT_TYPE_DURATION:
1866 case AV_OPT_TYPE_INT64:
1867 read_number(o, dst, NULL, NULL, &i64);
1868 return o->default_val.i64 == i64;
1869 case AV_OPT_TYPE_STRING:
1870 str = *(char **)dst;
1871 if (str == o->default_val.str) //2 NULLs
1873 if (!str || !o->default_val.str) //1 NULL
1875 return !strcmp(str, o->default_val.str);
1876 case AV_OPT_TYPE_DOUBLE:
1877 read_number(o, dst, &d, NULL, NULL);
1878 return o->default_val.dbl == d;
1879 case AV_OPT_TYPE_FLOAT:
1880 read_number(o, dst, &d, NULL, NULL);
1881 f = o->default_val.dbl;
1884 case AV_OPT_TYPE_RATIONAL:
1885 q = av_d2q(o->default_val.dbl, INT_MAX);
1886 return !av_cmp_q(*(AVRational*)dst, q);
1887 case AV_OPT_TYPE_BINARY: {
1892 int opt_size = *(int *)((void **)dst + 1);
1893 void *opt_ptr = *(void **)dst;
1894 if (!opt_size && (!o->default_val.str || !strlen(o->default_val.str)))
1896 if (!opt_size || !o->default_val.str || !strlen(o->default_val.str ))
1898 if (opt_size != strlen(o->default_val.str) / 2)
1900 ret = set_string_binary(NULL, NULL, o->default_val.str, &tmp.data);
1902 ret = !memcmp(opt_ptr, tmp.data, tmp.size);
1906 case AV_OPT_TYPE_DICT:
1907 /* Binary and dict have not default support yet. Any pointer is not default. */
1908 return !!(*(void **)dst);
1909 case AV_OPT_TYPE_IMAGE_SIZE:
1910 if (!o->default_val.str || !strcmp(o->default_val.str, "none"))
1912 else if ((ret = av_parse_video_size(&w, &h, o->default_val.str)) < 0)
1914 return (w == *(int *)dst) && (h == *((int *)dst+1));
1915 case AV_OPT_TYPE_VIDEO_RATE:
1916 q = (AVRational){0, 0};
1917 if (o->default_val.str) {
1918 if ((ret = av_parse_video_rate(&q, o->default_val.str)) < 0)
1921 return !av_cmp_q(*(AVRational*)dst, q);
1922 case AV_OPT_TYPE_COLOR: {
1923 uint8_t color[4] = {0, 0, 0, 0};
1924 if (o->default_val.str) {
1925 if ((ret = av_parse_color(color, o->default_val.str, -1, NULL)) < 0)
1928 return !memcmp(color, dst, sizeof(color));
1931 av_log(obj, AV_LOG_WARNING, "Not supported option type: %d, option name: %s\n", o->type, o->name);
1934 return AVERROR_PATCHWELCOME;
1937 int av_opt_is_set_to_default_by_name(void *obj, const char *name, int search_flags)
1942 return AVERROR(EINVAL);
1943 o = av_opt_find2(obj, name, NULL, 0, search_flags, &target);
1945 return AVERROR_OPTION_NOT_FOUND;
1946 return av_opt_is_set_to_default(target, o);
1949 int av_opt_serialize(void *obj, int opt_flags, int flags, char **buffer,
1950 const char key_val_sep, const char pairs_sep)
1952 const AVOption *o = NULL;
1956 const char special_chars[] = {pairs_sep, key_val_sep, '\0'};
1958 if (pairs_sep == '\0' || key_val_sep == '\0' || pairs_sep == key_val_sep ||
1959 pairs_sep == '\\' || key_val_sep == '\\') {
1960 av_log(obj, AV_LOG_ERROR, "Invalid separator(s) found.");
1961 return AVERROR(EINVAL);
1964 if (!obj || !buffer)
1965 return AVERROR(EINVAL);
1968 av_bprint_init(&bprint, 64, AV_BPRINT_SIZE_UNLIMITED);
1970 while (o = av_opt_next(obj, o)) {
1971 if (o->type == AV_OPT_TYPE_CONST)
1973 if ((flags & AV_OPT_SERIALIZE_OPT_FLAGS_EXACT) && o->flags != opt_flags)
1975 else if (((o->flags & opt_flags) != opt_flags))
1977 if (flags & AV_OPT_SERIALIZE_SKIP_DEFAULTS && av_opt_is_set_to_default(obj, o) > 0)
1979 if ((ret = av_opt_get(obj, o->name, 0, &buf)) < 0) {
1980 av_bprint_finalize(&bprint, NULL);
1985 av_bprint_append_data(&bprint, &pairs_sep, 1);
1986 av_bprint_escape(&bprint, o->name, special_chars, AV_ESCAPE_MODE_BACKSLASH, 0);
1987 av_bprint_append_data(&bprint, &key_val_sep, 1);
1988 av_bprint_escape(&bprint, buf, special_chars, AV_ESCAPE_MODE_BACKSLASH, 0);
1992 av_bprint_finalize(&bprint, buffer);