summaryrefslogtreecommitdiff
path: root/libavutil/opt.c (plain)
blob: 6f870789265a9e8371e28ff9ca15f89456051b6e
1/*
2 * AVOptions
3 * Copyright (c) 2005 Michael Niedermayer <michaelni@gmx.at>
4 *
5 * This file is part of FFmpeg.
6 *
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
11 *
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 */
21
22/**
23 * @file
24 * AVOptions
25 * @author Michael Niedermayer <michaelni@gmx.at>
26 */
27
28#include "avutil.h"
29#include "avassert.h"
30#include "avstring.h"
31#include "channel_layout.h"
32#include "common.h"
33#include "dict.h"
34#include "eval.h"
35#include "log.h"
36#include "parseutils.h"
37#include "pixdesc.h"
38#include "mathematics.h"
39#include "opt.h"
40#include "samplefmt.h"
41#include "bprint.h"
42
43#include <float.h>
44
45const AVOption *av_opt_next(const void *obj, const AVOption *last)
46{
47 const AVClass *class;
48 if (!obj)
49 return NULL;
50 class = *(const AVClass**)obj;
51 if (!last && class && class->option && class->option[0].name)
52 return class->option;
53 if (last && last[1].name)
54 return ++last;
55 return NULL;
56}
57
58static int read_number(const AVOption *o, const void *dst, double *num, int *den, int64_t *intnum)
59{
60 switch (o->type) {
61 case AV_OPT_TYPE_FLAGS:
62 *intnum = *(unsigned int*)dst;
63 return 0;
64 case AV_OPT_TYPE_PIXEL_FMT:
65 *intnum = *(enum AVPixelFormat *)dst;
66 return 0;
67 case AV_OPT_TYPE_SAMPLE_FMT:
68 *intnum = *(enum AVSampleFormat *)dst;
69 return 0;
70 case AV_OPT_TYPE_BOOL:
71 case AV_OPT_TYPE_INT:
72 *intnum = *(int *)dst;
73 return 0;
74 case AV_OPT_TYPE_CHANNEL_LAYOUT:
75 case AV_OPT_TYPE_DURATION:
76 case AV_OPT_TYPE_INT64:
77 case AV_OPT_TYPE_UINT64:
78 *intnum = *(int64_t *)dst;
79 return 0;
80 case AV_OPT_TYPE_FLOAT:
81 *num = *(float *)dst;
82 return 0;
83 case AV_OPT_TYPE_DOUBLE:
84 *num = *(double *)dst;
85 return 0;
86 case AV_OPT_TYPE_RATIONAL:
87 *intnum = ((AVRational *)dst)->num;
88 *den = ((AVRational *)dst)->den;
89 return 0;
90 case AV_OPT_TYPE_CONST:
91 *num = o->default_val.dbl;
92 return 0;
93 }
94 return AVERROR(EINVAL);
95}
96
97static int write_number(void *obj, const AVOption *o, void *dst, double num, int den, int64_t intnum)
98{
99 if (o->type != AV_OPT_TYPE_FLAGS &&
100 (!den || o->max * den < num * intnum || o->min * den > num * intnum)) {
101 num = den ? num * intnum / den : (num * intnum ? INFINITY : NAN);
102 av_log(obj, AV_LOG_ERROR, "Value %f for parameter '%s' out of range [%g - %g]\n",
103 num, o->name, o->min, o->max);
104 return AVERROR(ERANGE);
105 }
106 if (o->type == AV_OPT_TYPE_FLAGS) {
107 double d = num*intnum/den;
108 if (d < -1.5 || d > 0xFFFFFFFF+0.5 || (llrint(d*256) & 255)) {
109 av_log(obj, AV_LOG_ERROR,
110 "Value %f for parameter '%s' is not a valid set of 32bit integer flags\n",
111 num*intnum/den, o->name);
112 return AVERROR(ERANGE);
113 }
114 }
115
116 switch (o->type) {
117 case AV_OPT_TYPE_PIXEL_FMT:
118 *(enum AVPixelFormat *)dst = llrint(num / den) * intnum;
119 break;
120 case AV_OPT_TYPE_SAMPLE_FMT:
121 *(enum AVSampleFormat *)dst = llrint(num / den) * intnum;
122 break;
123 case AV_OPT_TYPE_BOOL:
124 case AV_OPT_TYPE_FLAGS:
125 case AV_OPT_TYPE_INT:
126 *(int *)dst = llrint(num / den) * intnum;
127 break;
128 case AV_OPT_TYPE_DURATION:
129 case AV_OPT_TYPE_CHANNEL_LAYOUT:
130 case AV_OPT_TYPE_INT64:{
131 double d = num / den;
132 if (intnum == 1 && d == (double)INT64_MAX) {
133 *(int64_t *)dst = INT64_MAX;
134 } else
135 *(int64_t *)dst = llrint(d) * intnum;
136 break;}
137 case AV_OPT_TYPE_UINT64:{
138 double d = num / den;
139 // We must special case uint64_t here as llrint() does not support values
140 // outside the int64_t range and there is no portable function which does
141 // "INT64_MAX + 1ULL" is used as it is representable exactly as IEEE double
142 // while INT64_MAX is not
143 if (intnum == 1 && d == (double)UINT64_MAX) {
144 *(uint64_t *)dst = UINT64_MAX;
145 } else if (d > INT64_MAX + 1ULL) {
146 *(uint64_t *)dst = (llrint(d - (INT64_MAX + 1ULL)) + (INT64_MAX + 1ULL))*intnum;
147 } else {
148 *(uint64_t *)dst = llrint(d) * intnum;
149 }
150 break;}
151 case AV_OPT_TYPE_FLOAT:
152 *(float *)dst = num * intnum / den;
153 break;
154 case AV_OPT_TYPE_DOUBLE:
155 *(double *)dst = num * intnum / den;
156 break;
157 case AV_OPT_TYPE_RATIONAL:
158 case AV_OPT_TYPE_VIDEO_RATE:
159 if ((int) num == num)
160 *(AVRational *)dst = (AVRational) { num *intnum, den };
161 else
162 *(AVRational *)dst = av_d2q(num * intnum / den, 1 << 24);
163 break;
164 default:
165 return AVERROR(EINVAL);
166 }
167 return 0;
168}
169
170static int hexchar2int(char c) {
171 if (c >= '0' && c <= '9')
172 return c - '0';
173 if (c >= 'a' && c <= 'f')
174 return c - 'a' + 10;
175 if (c >= 'A' && c <= 'F')
176 return c - 'A' + 10;
177 return -1;
178}
179
180static int set_string_binary(void *obj, const AVOption *o, const char *val, uint8_t **dst)
181{
182 int *lendst = (int *)(dst + 1);
183 uint8_t *bin, *ptr;
184 int len;
185
186 av_freep(dst);
187 *lendst = 0;
188
189 if (!val || !(len = strlen(val)))
190 return 0;
191
192 if (len & 1)
193 return AVERROR(EINVAL);
194 len /= 2;
195
196 ptr = bin = av_malloc(len);
197 if (!ptr)
198 return AVERROR(ENOMEM);
199 while (*val) {
200 int a = hexchar2int(*val++);
201 int b = hexchar2int(*val++);
202 if (a < 0 || b < 0) {
203 av_free(bin);
204 return AVERROR(EINVAL);
205 }
206 *ptr++ = (a << 4) | b;
207 }
208 *dst = bin;
209 *lendst = len;
210
211 return 0;
212}
213
214static int set_string(void *obj, const AVOption *o, const char *val, uint8_t **dst)
215{
216 av_freep(dst);
217 *dst = av_strdup(val);
218 return *dst ? 0 : AVERROR(ENOMEM);
219}
220
221#define DEFAULT_NUMVAL(opt) ((opt->type == AV_OPT_TYPE_INT64 || \
222 opt->type == AV_OPT_TYPE_UINT64 || \
223 opt->type == AV_OPT_TYPE_CONST || \
224 opt->type == AV_OPT_TYPE_FLAGS || \
225 opt->type == AV_OPT_TYPE_INT) \
226 ? opt->default_val.i64 \
227 : opt->default_val.dbl)
228
229static int set_string_number(void *obj, void *target_obj, const AVOption *o, const char *val, void *dst)
230{
231 int ret = 0;
232 int num, den;
233 char c;
234
235 if (sscanf(val, "%d%*1[:/]%d%c", &num, &den, &c) == 2) {
236 if ((ret = write_number(obj, o, dst, 1, den, num)) >= 0)
237 return ret;
238 ret = 0;
239 }
240
241 for (;;) {
242 int i = 0;
243 char buf[256];
244 int cmd = 0;
245 double d;
246 int64_t intnum = 1;
247
248 if (o->type == AV_OPT_TYPE_FLAGS) {
249 if (*val == '+' || *val == '-')
250 cmd = *(val++);
251 for (; i < sizeof(buf) - 1 && val[i] && val[i] != '+' && val[i] != '-'; i++)
252 buf[i] = val[i];
253 buf[i] = 0;
254 }
255
256 {
257 const AVOption *o_named = av_opt_find(target_obj, i ? buf : val, o->unit, 0, 0);
258 int res;
259 int ci = 0;
260 double const_values[64];
261 const char * const_names[64];
262 if (o_named && o_named->type == AV_OPT_TYPE_CONST)
263 d = DEFAULT_NUMVAL(o_named);
264 else {
265 if (o->unit) {
266 for (o_named = NULL; o_named = av_opt_next(target_obj, o_named); ) {
267 if (o_named->type == AV_OPT_TYPE_CONST &&
268 o_named->unit &&
269 !strcmp(o_named->unit, o->unit)) {
270 if (ci + 6 >= FF_ARRAY_ELEMS(const_values)) {
271 av_log(obj, AV_LOG_ERROR, "const_values array too small for %s\n", o->unit);
272 return AVERROR_PATCHWELCOME;
273 }
274 const_names [ci ] = o_named->name;
275 const_values[ci++] = DEFAULT_NUMVAL(o_named);
276 }
277 }
278 }
279 const_names [ci ] = "default";
280 const_values[ci++] = DEFAULT_NUMVAL(o);
281 const_names [ci ] = "max";
282 const_values[ci++] = o->max;
283 const_names [ci ] = "min";
284 const_values[ci++] = o->min;
285 const_names [ci ] = "none";
286 const_values[ci++] = 0;
287 const_names [ci ] = "all";
288 const_values[ci++] = ~0;
289 const_names [ci] = NULL;
290 const_values[ci] = 0;
291
292 res = av_expr_parse_and_eval(&d, i ? buf : val, const_names,
293 const_values, NULL, NULL, NULL, NULL, NULL, 0, obj);
294 if (res < 0) {
295 av_log(obj, AV_LOG_ERROR, "Unable to parse option value \"%s\"\n", val);
296 return res;
297 }
298 }
299 }
300 if (o->type == AV_OPT_TYPE_FLAGS) {
301 read_number(o, dst, NULL, NULL, &intnum);
302 if (cmd == '+')
303 d = intnum | (int64_t)d;
304 else if (cmd == '-')
305 d = intnum &~(int64_t)d;
306 }
307
308 if ((ret = write_number(obj, o, dst, d, 1, 1)) < 0)
309 return ret;
310 val += i;
311 if (!i || !*val)
312 return 0;
313 }
314}
315
316static int set_string_image_size(void *obj, const AVOption *o, const char *val, int *dst)
317{
318 int ret;
319
320 if (!val || !strcmp(val, "none")) {
321 dst[0] =
322 dst[1] = 0;
323 return 0;
324 }
325 ret = av_parse_video_size(dst, dst + 1, val);
326 if (ret < 0)
327 av_log(obj, AV_LOG_ERROR, "Unable to parse option value \"%s\" as image size\n", val);
328 return ret;
329}
330
331static int set_string_video_rate(void *obj, const AVOption *o, const char *val, AVRational *dst)
332{
333 int ret;
334 if (!val) {
335 ret = AVERROR(EINVAL);
336 } else {
337 ret = av_parse_video_rate(dst, val);
338 }
339 if (ret < 0)
340 av_log(obj, AV_LOG_ERROR, "Unable to parse option value \"%s\" as video rate\n", val);
341 return ret;
342}
343
344static int set_string_color(void *obj, const AVOption *o, const char *val, uint8_t *dst)
345{
346 int ret;
347
348 if (!val) {
349 return 0;
350 } else {
351 ret = av_parse_color(dst, val, -1, obj);
352 if (ret < 0)
353 av_log(obj, AV_LOG_ERROR, "Unable to parse option value \"%s\" as color\n", val);
354 return ret;
355 }
356 return 0;
357}
358
359static const char *get_bool_name(int val)
360{
361 if (val < 0)
362 return "auto";
363 return val ? "true" : "false";
364}
365
366static int set_string_bool(void *obj, const AVOption *o, const char *val, int *dst)
367{
368 int n;
369
370 if (!val)
371 return 0;
372
373 if (!strcmp(val, "auto")) {
374 n = -1;
375 } else if (av_match_name(val, "true,y,yes,enable,enabled,on")) {
376 n = 1;
377 } else if (av_match_name(val, "false,n,no,disable,disabled,off")) {
378 n = 0;
379 } else {
380 char *end = NULL;
381 n = strtol(val, &end, 10);
382 if (val + strlen(val) != end)
383 goto fail;
384 }
385
386 if (n < o->min || n > o->max)
387 goto fail;
388
389 *dst = n;
390 return 0;
391
392fail:
393 av_log(obj, AV_LOG_ERROR, "Unable to parse option value \"%s\" as boolean\n", val);
394 return AVERROR(EINVAL);
395}
396
397static int set_string_fmt(void *obj, const AVOption *o, const char *val, uint8_t *dst,
398 int fmt_nb, int ((*get_fmt)(const char *)), const char *desc)
399{
400 int fmt, min, max;
401
402 if (!val || !strcmp(val, "none")) {
403 fmt = -1;
404 } else {
405 fmt = get_fmt(val);
406 if (fmt == -1) {
407 char *tail;
408 fmt = strtol(val, &tail, 0);
409 if (*tail || (unsigned)fmt >= fmt_nb) {
410 av_log(obj, AV_LOG_ERROR,
411 "Unable to parse option value \"%s\" as %s\n", val, desc);
412 return AVERROR(EINVAL);
413 }
414 }
415 }
416
417 min = FFMAX(o->min, -1);
418 max = FFMIN(o->max, fmt_nb-1);
419
420 // hack for compatibility with old ffmpeg
421 if(min == 0 && max == 0) {
422 min = -1;
423 max = fmt_nb-1;
424 }
425
426 if (fmt < min || fmt > max) {
427 av_log(obj, AV_LOG_ERROR,
428 "Value %d for parameter '%s' out of %s format range [%d - %d]\n",
429 fmt, o->name, desc, min, max);
430 return AVERROR(ERANGE);
431 }
432
433 *(int *)dst = fmt;
434 return 0;
435}
436
437static int set_string_pixel_fmt(void *obj, const AVOption *o, const char *val, uint8_t *dst)
438{
439 return set_string_fmt(obj, o, val, dst,
440 AV_PIX_FMT_NB, av_get_pix_fmt, "pixel format");
441}
442
443static int set_string_sample_fmt(void *obj, const AVOption *o, const char *val, uint8_t *dst)
444{
445 return set_string_fmt(obj, o, val, dst,
446 AV_SAMPLE_FMT_NB, av_get_sample_fmt, "sample format");
447}
448
449int av_opt_set(void *obj, const char *name, const char *val, int search_flags)
450{
451 int ret = 0;
452 void *dst, *target_obj;
453 const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
454 if (!o || !target_obj)
455 return AVERROR_OPTION_NOT_FOUND;
456 if (!val && (o->type != AV_OPT_TYPE_STRING &&
457 o->type != AV_OPT_TYPE_PIXEL_FMT && o->type != AV_OPT_TYPE_SAMPLE_FMT &&
458 o->type != AV_OPT_TYPE_IMAGE_SIZE && o->type != AV_OPT_TYPE_VIDEO_RATE &&
459 o->type != AV_OPT_TYPE_DURATION && o->type != AV_OPT_TYPE_COLOR &&
460 o->type != AV_OPT_TYPE_CHANNEL_LAYOUT && o->type != AV_OPT_TYPE_BOOL))
461 return AVERROR(EINVAL);
462
463 if (o->flags & AV_OPT_FLAG_READONLY)
464 return AVERROR(EINVAL);
465
466 dst = ((uint8_t *)target_obj) + o->offset;
467 switch (o->type) {
468 case AV_OPT_TYPE_BOOL:
469 return set_string_bool(obj, o, val, dst);
470 case AV_OPT_TYPE_STRING:
471 return set_string(obj, o, val, dst);
472 case AV_OPT_TYPE_BINARY:
473 return set_string_binary(obj, o, val, dst);
474 case AV_OPT_TYPE_FLAGS:
475 case AV_OPT_TYPE_INT:
476 case AV_OPT_TYPE_INT64:
477 case AV_OPT_TYPE_UINT64:
478 case AV_OPT_TYPE_FLOAT:
479 case AV_OPT_TYPE_DOUBLE:
480 case AV_OPT_TYPE_RATIONAL:
481 return set_string_number(obj, target_obj, o, val, dst);
482 case AV_OPT_TYPE_IMAGE_SIZE:
483 return set_string_image_size(obj, o, val, dst);
484 case AV_OPT_TYPE_VIDEO_RATE: {
485 AVRational tmp;
486 ret = set_string_video_rate(obj, o, val, &tmp);
487 if (ret < 0)
488 return ret;
489 return write_number(obj, o, dst, 1, tmp.den, tmp.num);
490 }
491 case AV_OPT_TYPE_PIXEL_FMT:
492 return set_string_pixel_fmt(obj, o, val, dst);
493 case AV_OPT_TYPE_SAMPLE_FMT:
494 return set_string_sample_fmt(obj, o, val, dst);
495 case AV_OPT_TYPE_DURATION:
496 if (!val) {
497 *(int64_t *)dst = 0;
498 return 0;
499 } else {
500 if ((ret = av_parse_time(dst, val, 1)) < 0)
501 av_log(obj, AV_LOG_ERROR, "Unable to parse option value \"%s\" as duration\n", val);
502 return ret;
503 }
504 break;
505 case AV_OPT_TYPE_COLOR:
506 return set_string_color(obj, o, val, dst);
507 case AV_OPT_TYPE_CHANNEL_LAYOUT:
508 if (!val || !strcmp(val, "none")) {
509 *(int64_t *)dst = 0;
510 } else {
511 int64_t cl = av_get_channel_layout(val);
512 if (!cl) {
513 av_log(obj, AV_LOG_ERROR, "Unable to parse option value \"%s\" as channel layout\n", val);
514 ret = AVERROR(EINVAL);
515 }
516 *(int64_t *)dst = cl;
517 return ret;
518 }
519 break;
520 }
521
522 av_log(obj, AV_LOG_ERROR, "Invalid option type.\n");
523 return AVERROR(EINVAL);
524}
525
526#define OPT_EVAL_NUMBER(name, opttype, vartype) \
527int av_opt_eval_ ## name(void *obj, const AVOption *o, \
528 const char *val, vartype *name ## _out) \
529{ \
530 if (!o || o->type != opttype || o->flags & AV_OPT_FLAG_READONLY) \
531 return AVERROR(EINVAL); \
532 return set_string_number(obj, obj, o, val, name ## _out); \
533}
534
535OPT_EVAL_NUMBER(flags, AV_OPT_TYPE_FLAGS, int)
536OPT_EVAL_NUMBER(int, AV_OPT_TYPE_INT, int)
537OPT_EVAL_NUMBER(int64, AV_OPT_TYPE_INT64, int64_t)
538OPT_EVAL_NUMBER(float, AV_OPT_TYPE_FLOAT, float)
539OPT_EVAL_NUMBER(double, AV_OPT_TYPE_DOUBLE, double)
540OPT_EVAL_NUMBER(q, AV_OPT_TYPE_RATIONAL, AVRational)
541
542static int set_number(void *obj, const char *name, double num, int den, int64_t intnum,
543 int search_flags)
544{
545 void *dst, *target_obj;
546 const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
547
548 if (!o || !target_obj)
549 return AVERROR_OPTION_NOT_FOUND;
550
551 if (o->flags & AV_OPT_FLAG_READONLY)
552 return AVERROR(EINVAL);
553
554 dst = ((uint8_t *)target_obj) + o->offset;
555 return write_number(obj, o, dst, num, den, intnum);
556}
557
558int av_opt_set_int(void *obj, const char *name, int64_t val, int search_flags)
559{
560 return set_number(obj, name, 1, 1, val, search_flags);
561}
562
563int av_opt_set_double(void *obj, const char *name, double val, int search_flags)
564{
565 return set_number(obj, name, val, 1, 1, search_flags);
566}
567
568int av_opt_set_q(void *obj, const char *name, AVRational val, int search_flags)
569{
570 return set_number(obj, name, val.num, val.den, 1, search_flags);
571}
572
573int av_opt_set_bin(void *obj, const char *name, const uint8_t *val, int len, int search_flags)
574{
575 void *target_obj;
576 const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
577 uint8_t *ptr;
578 uint8_t **dst;
579 int *lendst;
580
581 if (!o || !target_obj)
582 return AVERROR_OPTION_NOT_FOUND;
583
584 if (o->type != AV_OPT_TYPE_BINARY || o->flags & AV_OPT_FLAG_READONLY)
585 return AVERROR(EINVAL);
586
587 ptr = len ? av_malloc(len) : NULL;
588 if (len && !ptr)
589 return AVERROR(ENOMEM);
590
591 dst = (uint8_t **)(((uint8_t *)target_obj) + o->offset);
592 lendst = (int *)(dst + 1);
593
594 av_free(*dst);
595 *dst = ptr;
596 *lendst = len;
597 if (len)
598 memcpy(ptr, val, len);
599
600 return 0;
601}
602
603int av_opt_set_image_size(void *obj, const char *name, int w, int h, int search_flags)
604{
605 void *target_obj;
606 const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
607
608 if (!o || !target_obj)
609 return AVERROR_OPTION_NOT_FOUND;
610 if (o->type != AV_OPT_TYPE_IMAGE_SIZE) {
611 av_log(obj, AV_LOG_ERROR,
612 "The value set by option '%s' is not an image size.\n", o->name);
613 return AVERROR(EINVAL);
614 }
615 if (w<0 || h<0) {
616 av_log(obj, AV_LOG_ERROR,
617 "Invalid negative size value %dx%d for size '%s'\n", w, h, o->name);
618 return AVERROR(EINVAL);
619 }
620 *(int *)(((uint8_t *)target_obj) + o->offset) = w;
621 *(int *)(((uint8_t *)target_obj+sizeof(int)) + o->offset) = h;
622 return 0;
623}
624
625int av_opt_set_video_rate(void *obj, const char *name, AVRational val, int search_flags)
626{
627 void *target_obj;
628 const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
629
630 if (!o || !target_obj)
631 return AVERROR_OPTION_NOT_FOUND;
632 if (o->type != AV_OPT_TYPE_VIDEO_RATE) {
633 av_log(obj, AV_LOG_ERROR,
634 "The value set by option '%s' is not a video rate.\n", o->name);
635 return AVERROR(EINVAL);
636 }
637 if (val.num <= 0 || val.den <= 0)
638 return AVERROR(EINVAL);
639 return set_number(obj, name, val.num, val.den, 1, search_flags);
640}
641
642static int set_format(void *obj, const char *name, int fmt, int search_flags,
643 enum AVOptionType type, const char *desc, int nb_fmts)
644{
645 void *target_obj;
646 const AVOption *o = av_opt_find2(obj, name, NULL, 0,
647 search_flags, &target_obj);
648 int min, max;
649
650 if (!o || !target_obj)
651 return AVERROR_OPTION_NOT_FOUND;
652 if (o->type != type) {
653 av_log(obj, AV_LOG_ERROR,
654 "The value set by option '%s' is not a %s format", name, desc);
655 return AVERROR(EINVAL);
656 }
657
658 min = FFMAX(o->min, -1);
659 max = FFMIN(o->max, nb_fmts-1);
660
661 if (fmt < min || fmt > max) {
662 av_log(obj, AV_LOG_ERROR,
663 "Value %d for parameter '%s' out of %s format range [%d - %d]\n",
664 fmt, name, desc, min, max);
665 return AVERROR(ERANGE);
666 }
667 *(int *)(((uint8_t *)target_obj) + o->offset) = fmt;
668 return 0;
669}
670
671int av_opt_set_pixel_fmt(void *obj, const char *name, enum AVPixelFormat fmt, int search_flags)
672{
673 return set_format(obj, name, fmt, search_flags, AV_OPT_TYPE_PIXEL_FMT, "pixel", AV_PIX_FMT_NB);
674}
675
676int av_opt_set_sample_fmt(void *obj, const char *name, enum AVSampleFormat fmt, int search_flags)
677{
678 return set_format(obj, name, fmt, search_flags, AV_OPT_TYPE_SAMPLE_FMT, "sample", AV_SAMPLE_FMT_NB);
679}
680
681int av_opt_set_channel_layout(void *obj, const char *name, int64_t cl, int search_flags)
682{
683 void *target_obj;
684 const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
685
686 if (!o || !target_obj)
687 return AVERROR_OPTION_NOT_FOUND;
688 if (o->type != AV_OPT_TYPE_CHANNEL_LAYOUT) {
689 av_log(obj, AV_LOG_ERROR,
690 "The value set by option '%s' is not a channel layout.\n", o->name);
691 return AVERROR(EINVAL);
692 }
693 *(int64_t *)(((uint8_t *)target_obj) + o->offset) = cl;
694 return 0;
695}
696
697int av_opt_set_dict_val(void *obj, const char *name, const AVDictionary *val,
698 int search_flags)
699{
700 void *target_obj;
701 AVDictionary **dst;
702 const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
703
704 if (!o || !target_obj)
705 return AVERROR_OPTION_NOT_FOUND;
706 if (o->flags & AV_OPT_FLAG_READONLY)
707 return AVERROR(EINVAL);
708
709 dst = (AVDictionary **)(((uint8_t *)target_obj) + o->offset);
710 av_dict_free(dst);
711 av_dict_copy(dst, val, 0);
712
713 return 0;
714}
715
716static void format_duration(char *buf, size_t size, int64_t d)
717{
718 char *e;
719
720 av_assert0(size >= 25);
721 if (d < 0 && d != INT64_MIN) {
722 *(buf++) = '-';
723 size--;
724 d = -d;
725 }
726 if (d == INT64_MAX)
727 snprintf(buf, size, "INT64_MAX");
728 else if (d == INT64_MIN)
729 snprintf(buf, size, "INT64_MIN");
730 else if (d > (int64_t)3600*1000000)
731 snprintf(buf, size, "%"PRId64":%02d:%02d.%06d", d / 3600000000,
732 (int)((d / 60000000) % 60),
733 (int)((d / 1000000) % 60),
734 (int)(d % 1000000));
735 else if (d > 60*1000000)
736 snprintf(buf, size, "%d:%02d.%06d",
737 (int)(d / 60000000),
738 (int)((d / 1000000) % 60),
739 (int)(d % 1000000));
740 else
741 snprintf(buf, size, "%d.%06d",
742 (int)(d / 1000000),
743 (int)(d % 1000000));
744 e = buf + strlen(buf);
745 while (e > buf && e[-1] == '0')
746 *(--e) = 0;
747 if (e > buf && e[-1] == '.')
748 *(--e) = 0;
749}
750
751int av_opt_get(void *obj, const char *name, int search_flags, uint8_t **out_val)
752{
753 void *dst, *target_obj;
754 const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
755 uint8_t *bin, buf[128];
756 int len, i, ret;
757 int64_t i64;
758
759 if (!o || !target_obj || (o->offset<=0 && o->type != AV_OPT_TYPE_CONST))
760 return AVERROR_OPTION_NOT_FOUND;
761
762 dst = (uint8_t *)target_obj + o->offset;
763
764 buf[0] = 0;
765 switch (o->type) {
766 case AV_OPT_TYPE_BOOL:
767 ret = snprintf(buf, sizeof(buf), "%s", (char *)av_x_if_null(get_bool_name(*(int *)dst), "invalid"));
768 break;
769 case AV_OPT_TYPE_FLAGS:
770 ret = snprintf(buf, sizeof(buf), "0x%08X", *(int *)dst);
771 break;
772 case AV_OPT_TYPE_INT:
773 ret = snprintf(buf, sizeof(buf), "%d", *(int *)dst);
774 break;
775 case AV_OPT_TYPE_INT64:
776 ret = snprintf(buf, sizeof(buf), "%"PRId64, *(int64_t *)dst);
777 break;
778 case AV_OPT_TYPE_UINT64:
779 ret = snprintf(buf, sizeof(buf), "%"PRIu64, *(uint64_t *)dst);
780 break;
781 case AV_OPT_TYPE_FLOAT:
782 ret = snprintf(buf, sizeof(buf), "%f", *(float *)dst);
783 break;
784 case AV_OPT_TYPE_DOUBLE:
785 ret = snprintf(buf, sizeof(buf), "%f", *(double *)dst);
786 break;
787 case AV_OPT_TYPE_VIDEO_RATE:
788 case AV_OPT_TYPE_RATIONAL:
789 ret = snprintf(buf, sizeof(buf), "%d/%d", ((AVRational *)dst)->num, ((AVRational *)dst)->den);
790 break;
791 case AV_OPT_TYPE_CONST:
792 ret = snprintf(buf, sizeof(buf), "%f", o->default_val.dbl);
793 break;
794 case AV_OPT_TYPE_STRING:
795 if (*(uint8_t **)dst) {
796 *out_val = av_strdup(*(uint8_t **)dst);
797 } else if (search_flags & AV_OPT_ALLOW_NULL) {
798 *out_val = NULL;
799 return 0;
800 } else {
801 *out_val = av_strdup("");
802 }
803 return *out_val ? 0 : AVERROR(ENOMEM);
804 case AV_OPT_TYPE_BINARY:
805 if (!*(uint8_t **)dst && (search_flags & AV_OPT_ALLOW_NULL)) {
806 *out_val = NULL;
807 return 0;
808 }
809 len = *(int *)(((uint8_t *)dst) + sizeof(uint8_t *));
810 if ((uint64_t)len * 2 + 1 > INT_MAX)
811 return AVERROR(EINVAL);
812 if (!(*out_val = av_malloc(len * 2 + 1)))
813 return AVERROR(ENOMEM);
814 if (!len) {
815 *out_val[0] = '\0';
816 return 0;
817 }
818 bin = *(uint8_t **)dst;
819 for (i = 0; i < len; i++)
820 snprintf(*out_val + i * 2, 3, "%02X", bin[i]);
821 return 0;
822 case AV_OPT_TYPE_IMAGE_SIZE:
823 ret = snprintf(buf, sizeof(buf), "%dx%d", ((int *)dst)[0], ((int *)dst)[1]);
824 break;
825 case AV_OPT_TYPE_PIXEL_FMT:
826 ret = snprintf(buf, sizeof(buf), "%s", (char *)av_x_if_null(av_get_pix_fmt_name(*(enum AVPixelFormat *)dst), "none"));
827 break;
828 case AV_OPT_TYPE_SAMPLE_FMT:
829 ret = snprintf(buf, sizeof(buf), "%s", (char *)av_x_if_null(av_get_sample_fmt_name(*(enum AVSampleFormat *)dst), "none"));
830 break;
831 case AV_OPT_TYPE_DURATION:
832 i64 = *(int64_t *)dst;
833 format_duration(buf, sizeof(buf), i64);
834 ret = strlen(buf); // no overflow possible, checked by an assert
835 break;
836 case AV_OPT_TYPE_COLOR:
837 ret = snprintf(buf, sizeof(buf), "0x%02x%02x%02x%02x",
838 (int)((uint8_t *)dst)[0], (int)((uint8_t *)dst)[1],
839 (int)((uint8_t *)dst)[2], (int)((uint8_t *)dst)[3]);
840 break;
841 case AV_OPT_TYPE_CHANNEL_LAYOUT:
842 i64 = *(int64_t *)dst;
843 ret = snprintf(buf, sizeof(buf), "0x%"PRIx64, i64);
844 break;
845 default:
846 return AVERROR(EINVAL);
847 }
848
849 if (ret >= sizeof(buf))
850 return AVERROR(EINVAL);
851 *out_val = av_strdup(buf);
852 return *out_val ? 0 : AVERROR(ENOMEM);
853}
854
855static int get_number(void *obj, const char *name, const AVOption **o_out, double *num, int *den, int64_t *intnum,
856 int search_flags)
857{
858 void *dst, *target_obj;
859 const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
860 if (!o || !target_obj)
861 goto error;
862
863 dst = ((uint8_t *)target_obj) + o->offset;
864
865 if (o_out) *o_out= o;
866
867 return read_number(o, dst, num, den, intnum);
868
869error:
870 *den =
871 *intnum = 0;
872 return -1;
873}
874
875int av_opt_get_int(void *obj, const char *name, int search_flags, int64_t *out_val)
876{
877 int64_t intnum = 1;
878 double num = 1;
879 int ret, den = 1;
880
881 if ((ret = get_number(obj, name, NULL, &num, &den, &intnum, search_flags)) < 0)
882 return ret;
883 *out_val = num * intnum / den;
884 return 0;
885}
886
887int av_opt_get_double(void *obj, const char *name, int search_flags, double *out_val)
888{
889 int64_t intnum = 1;
890 double num = 1;
891 int ret, den = 1;
892
893 if ((ret = get_number(obj, name, NULL, &num, &den, &intnum, search_flags)) < 0)
894 return ret;
895 *out_val = num * intnum / den;
896 return 0;
897}
898
899int av_opt_get_q(void *obj, const char *name, int search_flags, AVRational *out_val)
900{
901 int64_t intnum = 1;
902 double num = 1;
903 int ret, den = 1;
904
905 if ((ret = get_number(obj, name, NULL, &num, &den, &intnum, search_flags)) < 0)
906 return ret;
907
908 if (num == 1.0 && (int)intnum == intnum)
909 *out_val = (AVRational){intnum, den};
910 else
911 *out_val = av_d2q(num*intnum/den, 1<<24);
912 return 0;
913}
914
915int av_opt_get_image_size(void *obj, const char *name, int search_flags, int *w_out, int *h_out)
916{
917 void *dst, *target_obj;
918 const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
919 if (!o || !target_obj)
920 return AVERROR_OPTION_NOT_FOUND;
921 if (o->type != AV_OPT_TYPE_IMAGE_SIZE) {
922 av_log(obj, AV_LOG_ERROR,
923 "The value for option '%s' is not an image size.\n", name);
924 return AVERROR(EINVAL);
925 }
926
927 dst = ((uint8_t*)target_obj) + o->offset;
928 if (w_out) *w_out = *(int *)dst;
929 if (h_out) *h_out = *((int *)dst+1);
930 return 0;
931}
932
933int av_opt_get_video_rate(void *obj, const char *name, int search_flags, AVRational *out_val)
934{
935 int64_t intnum = 1;
936 double num = 1;
937 int ret, den = 1;
938
939 if ((ret = get_number(obj, name, NULL, &num, &den, &intnum, search_flags)) < 0)
940 return ret;
941
942 if (num == 1.0 && (int)intnum == intnum)
943 *out_val = (AVRational) { intnum, den };
944 else
945 *out_val = av_d2q(num * intnum / den, 1 << 24);
946 return 0;
947}
948
949static int get_format(void *obj, const char *name, int search_flags, int *out_fmt,
950 enum AVOptionType type, const char *desc)
951{
952 void *dst, *target_obj;
953 const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
954 if (!o || !target_obj)
955 return AVERROR_OPTION_NOT_FOUND;
956 if (o->type != type) {
957 av_log(obj, AV_LOG_ERROR,
958 "The value for option '%s' is not a %s format.\n", desc, name);
959 return AVERROR(EINVAL);
960 }
961
962 dst = ((uint8_t*)target_obj) + o->offset;
963 *out_fmt = *(int *)dst;
964 return 0;
965}
966
967int av_opt_get_pixel_fmt(void *obj, const char *name, int search_flags, enum AVPixelFormat *out_fmt)
968{
969 return get_format(obj, name, search_flags, out_fmt, AV_OPT_TYPE_PIXEL_FMT, "pixel");
970}
971
972int av_opt_get_sample_fmt(void *obj, const char *name, int search_flags, enum AVSampleFormat *out_fmt)
973{
974 return get_format(obj, name, search_flags, out_fmt, AV_OPT_TYPE_SAMPLE_FMT, "sample");
975}
976
977int av_opt_get_channel_layout(void *obj, const char *name, int search_flags, int64_t *cl)
978{
979 void *dst, *target_obj;
980 const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
981 if (!o || !target_obj)
982 return AVERROR_OPTION_NOT_FOUND;
983 if (o->type != AV_OPT_TYPE_CHANNEL_LAYOUT) {
984 av_log(obj, AV_LOG_ERROR,
985 "The value for option '%s' is not a channel layout.\n", name);
986 return AVERROR(EINVAL);
987 }
988
989 dst = ((uint8_t*)target_obj) + o->offset;
990 *cl = *(int64_t *)dst;
991 return 0;
992}
993
994int av_opt_get_dict_val(void *obj, const char *name, int search_flags, AVDictionary **out_val)
995{
996 void *target_obj;
997 AVDictionary *src;
998 const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
999
1000 if (!o || !target_obj)
1001 return AVERROR_OPTION_NOT_FOUND;
1002 if (o->type != AV_OPT_TYPE_DICT)
1003 return AVERROR(EINVAL);
1004
1005 src = *(AVDictionary **)(((uint8_t *)target_obj) + o->offset);
1006 av_dict_copy(out_val, src, 0);
1007
1008 return 0;
1009}
1010
1011int av_opt_flag_is_set(void *obj, const char *field_name, const char *flag_name)
1012{
1013 const AVOption *field = av_opt_find(obj, field_name, NULL, 0, 0);
1014 const AVOption *flag = av_opt_find(obj, flag_name,
1015 field ? field->unit : NULL, 0, 0);
1016 int64_t res;
1017
1018 if (!field || !flag || flag->type != AV_OPT_TYPE_CONST ||
1019 av_opt_get_int(obj, field_name, 0, &res) < 0)
1020 return 0;
1021 return res & flag->default_val.i64;
1022}
1023
1024static void log_value(void *av_log_obj, int level, double d)
1025{
1026 if (d == INT_MAX) {
1027 av_log(av_log_obj, level, "INT_MAX");
1028 } else if (d == INT_MIN) {
1029 av_log(av_log_obj, level, "INT_MIN");
1030 } else if (d == UINT32_MAX) {
1031 av_log(av_log_obj, level, "UINT32_MAX");
1032 } else if (d == (double)INT64_MAX) {
1033 av_log(av_log_obj, level, "I64_MAX");
1034 } else if (d == INT64_MIN) {
1035 av_log(av_log_obj, level, "I64_MIN");
1036 } else if (d == FLT_MAX) {
1037 av_log(av_log_obj, level, "FLT_MAX");
1038 } else if (d == FLT_MIN) {
1039 av_log(av_log_obj, level, "FLT_MIN");
1040 } else if (d == -FLT_MAX) {
1041 av_log(av_log_obj, level, "-FLT_MAX");
1042 } else if (d == -FLT_MIN) {
1043 av_log(av_log_obj, level, "-FLT_MIN");
1044 } else if (d == DBL_MAX) {
1045 av_log(av_log_obj, level, "DBL_MAX");
1046 } else if (d == DBL_MIN) {
1047 av_log(av_log_obj, level, "DBL_MIN");
1048 } else if (d == -DBL_MAX) {
1049 av_log(av_log_obj, level, "-DBL_MAX");
1050 } else if (d == -DBL_MIN) {
1051 av_log(av_log_obj, level, "-DBL_MIN");
1052 } else {
1053 av_log(av_log_obj, level, "%g", d);
1054 }
1055}
1056
1057static const char *get_opt_const_name(void *obj, const char *unit, int64_t value)
1058{
1059 const AVOption *opt = NULL;
1060
1061 if (!unit)
1062 return NULL;
1063 while ((opt = av_opt_next(obj, opt)))
1064 if (opt->type == AV_OPT_TYPE_CONST && !strcmp(opt->unit, unit) &&
1065 opt->default_val.i64 == value)
1066 return opt->name;
1067 return NULL;
1068}
1069
1070static char *get_opt_flags_string(void *obj, const char *unit, int64_t value)
1071{
1072 const AVOption *opt = NULL;
1073 char flags[512];
1074
1075 flags[0] = 0;
1076 if (!unit)
1077 return NULL;
1078 while ((opt = av_opt_next(obj, opt))) {
1079 if (opt->type == AV_OPT_TYPE_CONST && !strcmp(opt->unit, unit) &&
1080 opt->default_val.i64 & value) {
1081 if (flags[0])
1082 av_strlcatf(flags, sizeof(flags), "+");
1083 av_strlcatf(flags, sizeof(flags), "%s", opt->name);
1084 }
1085 }
1086 if (flags[0])
1087 return av_strdup(flags);
1088 return NULL;
1089}
1090
1091static void opt_list(void *obj, void *av_log_obj, const char *unit,
1092 int req_flags, int rej_flags)
1093{
1094 const AVOption *opt = NULL;
1095 AVOptionRanges *r;
1096 int i;
1097
1098 while ((opt = av_opt_next(obj, opt))) {
1099 if (!(opt->flags & req_flags) || (opt->flags & rej_flags))
1100 continue;
1101
1102 /* Don't print CONST's on level one.
1103 * Don't print anything but CONST's on level two.
1104 * Only print items from the requested unit.
1105 */
1106 if (!unit && opt->type == AV_OPT_TYPE_CONST)
1107 continue;
1108 else if (unit && opt->type != AV_OPT_TYPE_CONST)
1109 continue;
1110 else if (unit && opt->type == AV_OPT_TYPE_CONST && strcmp(unit, opt->unit))
1111 continue;
1112 else if (unit && opt->type == AV_OPT_TYPE_CONST)
1113 av_log(av_log_obj, AV_LOG_INFO, " %-15s ", opt->name);
1114 else
1115 av_log(av_log_obj, AV_LOG_INFO, " %s%-17s ",
1116 (opt->flags & AV_OPT_FLAG_FILTERING_PARAM) ? "" : "-",
1117 opt->name);
1118
1119 switch (opt->type) {
1120 case AV_OPT_TYPE_FLAGS:
1121 av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<flags>");
1122 break;
1123 case AV_OPT_TYPE_INT:
1124 av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<int>");
1125 break;
1126 case AV_OPT_TYPE_INT64:
1127 av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<int64>");
1128 break;
1129 case AV_OPT_TYPE_UINT64:
1130 av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<uint64>");
1131 break;
1132 case AV_OPT_TYPE_DOUBLE:
1133 av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<double>");
1134 break;
1135 case AV_OPT_TYPE_FLOAT:
1136 av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<float>");
1137 break;
1138 case AV_OPT_TYPE_STRING:
1139 av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<string>");
1140 break;
1141 case AV_OPT_TYPE_RATIONAL:
1142 av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<rational>");
1143 break;
1144 case AV_OPT_TYPE_BINARY:
1145 av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<binary>");
1146 break;
1147 case AV_OPT_TYPE_IMAGE_SIZE:
1148 av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<image_size>");
1149 break;
1150 case AV_OPT_TYPE_VIDEO_RATE:
1151 av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<video_rate>");
1152 break;
1153 case AV_OPT_TYPE_PIXEL_FMT:
1154 av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<pix_fmt>");
1155 break;
1156 case AV_OPT_TYPE_SAMPLE_FMT:
1157 av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<sample_fmt>");
1158 break;
1159 case AV_OPT_TYPE_DURATION:
1160 av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<duration>");
1161 break;
1162 case AV_OPT_TYPE_COLOR:
1163 av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<color>");
1164 break;
1165 case AV_OPT_TYPE_CHANNEL_LAYOUT:
1166 av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<channel_layout>");
1167 break;
1168 case AV_OPT_TYPE_BOOL:
1169 av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<boolean>");
1170 break;
1171 case AV_OPT_TYPE_CONST:
1172 default:
1173 av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "");
1174 break;
1175 }
1176 av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_ENCODING_PARAM) ? 'E' : '.');
1177 av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_DECODING_PARAM) ? 'D' : '.');
1178 av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_FILTERING_PARAM)? 'F' : '.');
1179 av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_VIDEO_PARAM ) ? 'V' : '.');
1180 av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_AUDIO_PARAM ) ? 'A' : '.');
1181 av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_SUBTITLE_PARAM) ? 'S' : '.');
1182 av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_EXPORT) ? 'X' : '.');
1183 av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_READONLY) ? 'R' : '.');
1184
1185 if (opt->help)
1186 av_log(av_log_obj, AV_LOG_INFO, " %s", opt->help);
1187
1188 if (av_opt_query_ranges(&r, obj, opt->name, AV_OPT_SEARCH_FAKE_OBJ) >= 0) {
1189 switch (opt->type) {
1190 case AV_OPT_TYPE_INT:
1191 case AV_OPT_TYPE_INT64:
1192 case AV_OPT_TYPE_UINT64:
1193 case AV_OPT_TYPE_DOUBLE:
1194 case AV_OPT_TYPE_FLOAT:
1195 case AV_OPT_TYPE_RATIONAL:
1196 for (i = 0; i < r->nb_ranges; i++) {
1197 av_log(av_log_obj, AV_LOG_INFO, " (from ");
1198 log_value(av_log_obj, AV_LOG_INFO, r->range[i]->value_min);
1199 av_log(av_log_obj, AV_LOG_INFO, " to ");
1200 log_value(av_log_obj, AV_LOG_INFO, r->range[i]->value_max);
1201 av_log(av_log_obj, AV_LOG_INFO, ")");
1202 }
1203 break;
1204 }
1205 av_opt_freep_ranges(&r);
1206 }
1207
1208 if (opt->type != AV_OPT_TYPE_CONST &&
1209 opt->type != AV_OPT_TYPE_BINARY &&
1210 !((opt->type == AV_OPT_TYPE_COLOR ||
1211 opt->type == AV_OPT_TYPE_IMAGE_SIZE ||
1212 opt->type == AV_OPT_TYPE_STRING ||
1213 opt->type == AV_OPT_TYPE_VIDEO_RATE) &&
1214 !opt->default_val.str)) {
1215 av_log(av_log_obj, AV_LOG_INFO, " (default ");
1216 switch (opt->type) {
1217 case AV_OPT_TYPE_BOOL:
1218 av_log(av_log_obj, AV_LOG_INFO, "%s", (char *)av_x_if_null(get_bool_name(opt->default_val.i64), "invalid"));
1219 break;
1220 case AV_OPT_TYPE_FLAGS: {
1221 char *def_flags = get_opt_flags_string(obj, opt->unit, opt->default_val.i64);
1222 if (def_flags) {
1223 av_log(av_log_obj, AV_LOG_INFO, "%s", def_flags);
1224 av_freep(&def_flags);
1225 } else {
1226 av_log(av_log_obj, AV_LOG_INFO, "%"PRIX64, opt->default_val.i64);
1227 }
1228 break;
1229 }
1230 case AV_OPT_TYPE_DURATION: {
1231 char buf[25];
1232 format_duration(buf, sizeof(buf), opt->default_val.i64);
1233 av_log(av_log_obj, AV_LOG_INFO, "%s", buf);
1234 break;
1235 }
1236 case AV_OPT_TYPE_INT:
1237 case AV_OPT_TYPE_UINT64:
1238 case AV_OPT_TYPE_INT64: {
1239 const char *def_const = get_opt_const_name(obj, opt->unit, opt->default_val.i64);
1240 if (def_const)
1241 av_log(av_log_obj, AV_LOG_INFO, "%s", def_const);
1242 else
1243 log_value(av_log_obj, AV_LOG_INFO, opt->default_val.i64);
1244 break;
1245 }
1246 case AV_OPT_TYPE_DOUBLE:
1247 case AV_OPT_TYPE_FLOAT:
1248 log_value(av_log_obj, AV_LOG_INFO, opt->default_val.dbl);
1249 break;
1250 case AV_OPT_TYPE_RATIONAL: {
1251 AVRational q = av_d2q(opt->default_val.dbl, INT_MAX);
1252 av_log(av_log_obj, AV_LOG_INFO, "%d/%d", q.num, q.den); }
1253 break;
1254 case AV_OPT_TYPE_PIXEL_FMT:
1255 av_log(av_log_obj, AV_LOG_INFO, "%s", (char *)av_x_if_null(av_get_pix_fmt_name(opt->default_val.i64), "none"));
1256 break;
1257 case AV_OPT_TYPE_SAMPLE_FMT:
1258 av_log(av_log_obj, AV_LOG_INFO, "%s", (char *)av_x_if_null(av_get_sample_fmt_name(opt->default_val.i64), "none"));
1259 break;
1260 case AV_OPT_TYPE_COLOR:
1261 case AV_OPT_TYPE_IMAGE_SIZE:
1262 case AV_OPT_TYPE_STRING:
1263 case AV_OPT_TYPE_VIDEO_RATE:
1264 av_log(av_log_obj, AV_LOG_INFO, "\"%s\"", opt->default_val.str);
1265 break;
1266 case AV_OPT_TYPE_CHANNEL_LAYOUT:
1267 av_log(av_log_obj, AV_LOG_INFO, "0x%"PRIx64, opt->default_val.i64);
1268 break;
1269 }
1270 av_log(av_log_obj, AV_LOG_INFO, ")");
1271 }
1272
1273 av_log(av_log_obj, AV_LOG_INFO, "\n");
1274 if (opt->unit && opt->type != AV_OPT_TYPE_CONST)
1275 opt_list(obj, av_log_obj, opt->unit, req_flags, rej_flags);
1276 }
1277}
1278
1279int av_opt_show2(void *obj, void *av_log_obj, int req_flags, int rej_flags)
1280{
1281 if (!obj)
1282 return -1;
1283
1284 av_log(av_log_obj, AV_LOG_INFO, "%s AVOptions:\n", (*(AVClass **)obj)->class_name);
1285
1286 opt_list(obj, av_log_obj, NULL, req_flags, rej_flags);
1287
1288 return 0;
1289}
1290
1291void av_opt_set_defaults(void *s)
1292{
1293 av_opt_set_defaults2(s, 0, 0);
1294}
1295
1296void av_opt_set_defaults2(void *s, int mask, int flags)
1297{
1298 const AVOption *opt = NULL;
1299 while ((opt = av_opt_next(s, opt))) {
1300 void *dst = ((uint8_t*)s) + opt->offset;
1301
1302 if ((opt->flags & mask) != flags)
1303 continue;
1304
1305 if (opt->flags & AV_OPT_FLAG_READONLY)
1306 continue;
1307
1308 switch (opt->type) {
1309 case AV_OPT_TYPE_CONST:
1310 /* Nothing to be done here */
1311 break;
1312 case AV_OPT_TYPE_BOOL:
1313 case AV_OPT_TYPE_FLAGS:
1314 case AV_OPT_TYPE_INT:
1315 case AV_OPT_TYPE_INT64:
1316 case AV_OPT_TYPE_UINT64:
1317 case AV_OPT_TYPE_DURATION:
1318 case AV_OPT_TYPE_CHANNEL_LAYOUT:
1319 case AV_OPT_TYPE_PIXEL_FMT:
1320 case AV_OPT_TYPE_SAMPLE_FMT:
1321 write_number(s, opt, dst, 1, 1, opt->default_val.i64);
1322 break;
1323 case AV_OPT_TYPE_DOUBLE:
1324 case AV_OPT_TYPE_FLOAT: {
1325 double val;
1326 val = opt->default_val.dbl;
1327 write_number(s, opt, dst, val, 1, 1);
1328 }
1329 break;
1330 case AV_OPT_TYPE_RATIONAL: {
1331 AVRational val;
1332 val = av_d2q(opt->default_val.dbl, INT_MAX);
1333 write_number(s, opt, dst, 1, val.den, val.num);
1334 }
1335 break;
1336 case AV_OPT_TYPE_COLOR:
1337 set_string_color(s, opt, opt->default_val.str, dst);
1338 break;
1339 case AV_OPT_TYPE_STRING:
1340 set_string(s, opt, opt->default_val.str, dst);
1341 break;
1342 case AV_OPT_TYPE_IMAGE_SIZE:
1343 set_string_image_size(s, opt, opt->default_val.str, dst);
1344 break;
1345 case AV_OPT_TYPE_VIDEO_RATE:
1346 set_string_video_rate(s, opt, opt->default_val.str, dst);
1347 break;
1348 case AV_OPT_TYPE_BINARY:
1349 set_string_binary(s, opt, opt->default_val.str, dst);
1350 break;
1351 case AV_OPT_TYPE_DICT:
1352 /* Cannot set defaults for these types */
1353 break;
1354 default:
1355 av_log(s, AV_LOG_DEBUG, "AVOption type %d of option %s not implemented yet\n",
1356 opt->type, opt->name);
1357 }
1358 }
1359}
1360
1361/**
1362 * Store the value in the field in ctx that is named like key.
1363 * ctx must be an AVClass context, storing is done using AVOptions.
1364 *
1365 * @param buf the string to parse, buf will be updated to point at the
1366 * separator just after the parsed key/value pair
1367 * @param key_val_sep a 0-terminated list of characters used to
1368 * separate key from value
1369 * @param pairs_sep a 0-terminated list of characters used to separate
1370 * two pairs from each other
1371 * @return 0 if the key/value pair has been successfully parsed and
1372 * set, or a negative value corresponding to an AVERROR code in case
1373 * of error:
1374 * AVERROR(EINVAL) if the key/value pair cannot be parsed,
1375 * the error code issued by av_opt_set() if the key/value pair
1376 * cannot be set
1377 */
1378static int parse_key_value_pair(void *ctx, const char **buf,
1379 const char *key_val_sep, const char *pairs_sep)
1380{
1381 char *key = av_get_token(buf, key_val_sep);
1382 char *val;
1383 int ret;
1384
1385 if (!key)
1386 return AVERROR(ENOMEM);
1387
1388 if (*key && strspn(*buf, key_val_sep)) {
1389 (*buf)++;
1390 val = av_get_token(buf, pairs_sep);
1391 if (!val) {
1392 av_freep(&key);
1393 return AVERROR(ENOMEM);
1394 }
1395 } else {
1396 av_log(ctx, AV_LOG_ERROR, "Missing key or no key/value separator found after key '%s'\n", key);
1397 av_free(key);
1398 return AVERROR(EINVAL);
1399 }
1400
1401 av_log(ctx, AV_LOG_DEBUG, "Setting entry with key '%s' to value '%s'\n", key, val);
1402
1403 ret = av_opt_set(ctx, key, val, AV_OPT_SEARCH_CHILDREN);
1404 if (ret == AVERROR_OPTION_NOT_FOUND)
1405 av_log(ctx, AV_LOG_ERROR, "Key '%s' not found.\n", key);
1406
1407 av_free(key);
1408 av_free(val);
1409 return ret;
1410}
1411
1412int av_set_options_string(void *ctx, const char *opts,
1413 const char *key_val_sep, const char *pairs_sep)
1414{
1415 int ret, count = 0;
1416
1417 if (!opts)
1418 return 0;
1419
1420 while (*opts) {
1421 if ((ret = parse_key_value_pair(ctx, &opts, key_val_sep, pairs_sep)) < 0)
1422 return ret;
1423 count++;
1424
1425 if (*opts)
1426 opts++;
1427 }
1428
1429 return count;
1430}
1431
1432#define WHITESPACES " \n\t\r"
1433
1434static int is_key_char(char c)
1435{
1436 return (unsigned)((c | 32) - 'a') < 26 ||
1437 (unsigned)(c - '0') < 10 ||
1438 c == '-' || c == '_' || c == '/' || c == '.';
1439}
1440
1441/**
1442 * Read a key from a string.
1443 *
1444 * The key consists of is_key_char characters and must be terminated by a
1445 * character from the delim string; spaces are ignored.
1446 *
1447 * @return 0 for success (even with ellipsis), <0 for failure
1448 */
1449static int get_key(const char **ropts, const char *delim, char **rkey)
1450{
1451 const char *opts = *ropts;
1452 const char *key_start, *key_end;
1453
1454 key_start = opts += strspn(opts, WHITESPACES);
1455 while (is_key_char(*opts))
1456 opts++;
1457 key_end = opts;
1458 opts += strspn(opts, WHITESPACES);
1459 if (!*opts || !strchr(delim, *opts))
1460 return AVERROR(EINVAL);
1461 opts++;
1462 if (!(*rkey = av_malloc(key_end - key_start + 1)))
1463 return AVERROR(ENOMEM);
1464 memcpy(*rkey, key_start, key_end - key_start);
1465 (*rkey)[key_end - key_start] = 0;
1466 *ropts = opts;
1467 return 0;
1468}
1469
1470int av_opt_get_key_value(const char **ropts,
1471 const char *key_val_sep, const char *pairs_sep,
1472 unsigned flags,
1473 char **rkey, char **rval)
1474{
1475 int ret;
1476 char *key = NULL, *val;
1477 const char *opts = *ropts;
1478
1479 if ((ret = get_key(&opts, key_val_sep, &key)) < 0 &&
1480 !(flags & AV_OPT_FLAG_IMPLICIT_KEY))
1481 return AVERROR(EINVAL);
1482 if (!(val = av_get_token(&opts, pairs_sep))) {
1483 av_free(key);
1484 return AVERROR(ENOMEM);
1485 }
1486 *ropts = opts;
1487 *rkey = key;
1488 *rval = val;
1489 return 0;
1490}
1491
1492int av_opt_set_from_string(void *ctx, const char *opts,
1493 const char *const *shorthand,
1494 const char *key_val_sep, const char *pairs_sep)
1495{
1496 int ret, count = 0;
1497 const char *dummy_shorthand = NULL;
1498 char *av_uninit(parsed_key), *av_uninit(value);
1499 const char *key;
1500
1501 if (!opts)
1502 return 0;
1503 if (!shorthand)
1504 shorthand = &dummy_shorthand;
1505
1506 while (*opts) {
1507 ret = av_opt_get_key_value(&opts, key_val_sep, pairs_sep,
1508 *shorthand ? AV_OPT_FLAG_IMPLICIT_KEY : 0,
1509 &parsed_key, &value);
1510 if (ret < 0) {
1511 if (ret == AVERROR(EINVAL))
1512 av_log(ctx, AV_LOG_ERROR, "No option name near '%s'\n", opts);
1513 else
1514 av_log(ctx, AV_LOG_ERROR, "Unable to parse '%s': %s\n", opts,
1515 av_err2str(ret));
1516 return ret;
1517 }
1518 if (*opts)
1519 opts++;
1520 if (parsed_key) {
1521 key = parsed_key;
1522 while (*shorthand) /* discard all remaining shorthand */
1523 shorthand++;
1524 } else {
1525 key = *(shorthand++);
1526 }
1527
1528 av_log(ctx, AV_LOG_DEBUG, "Setting '%s' to value '%s'\n", key, value);
1529 if ((ret = av_opt_set(ctx, key, value, 0)) < 0) {
1530 if (ret == AVERROR_OPTION_NOT_FOUND)
1531 av_log(ctx, AV_LOG_ERROR, "Option '%s' not found\n", key);
1532 av_free(value);
1533 av_free(parsed_key);
1534 return ret;
1535 }
1536
1537 av_free(value);
1538 av_free(parsed_key);
1539 count++;
1540 }
1541 return count;
1542}
1543
1544void av_opt_free(void *obj)
1545{
1546 const AVOption *o = NULL;
1547 while ((o = av_opt_next(obj, o))) {
1548 switch (o->type) {
1549 case AV_OPT_TYPE_STRING:
1550 case AV_OPT_TYPE_BINARY:
1551 av_freep((uint8_t *)obj + o->offset);
1552 break;
1553
1554 case AV_OPT_TYPE_DICT:
1555 av_dict_free((AVDictionary **)(((uint8_t *)obj) + o->offset));
1556 break;
1557
1558 default:
1559 break;
1560 }
1561 }
1562}
1563
1564int av_opt_set_dict2(void *obj, AVDictionary **options, int search_flags)
1565{
1566 AVDictionaryEntry *t = NULL;
1567 AVDictionary *tmp = NULL;
1568 int ret = 0;
1569
1570 if (!options)
1571 return 0;
1572
1573 while ((t = av_dict_get(*options, "", t, AV_DICT_IGNORE_SUFFIX))) {
1574 ret = av_opt_set(obj, t->key, t->value, search_flags);
1575 if (ret == AVERROR_OPTION_NOT_FOUND)
1576 ret = av_dict_set(&tmp, t->key, t->value, 0);
1577 if (ret < 0) {
1578 av_log(obj, AV_LOG_ERROR, "Error setting option %s to value %s.\n", t->key, t->value);
1579 av_dict_free(&tmp);
1580 return ret;
1581 }
1582 ret = 0;
1583 }
1584 av_dict_free(options);
1585 *options = tmp;
1586 return ret;
1587}
1588
1589int av_opt_set_dict(void *obj, AVDictionary **options)
1590{
1591 return av_opt_set_dict2(obj, options, 0);
1592}
1593
1594const AVOption *av_opt_find(void *obj, const char *name, const char *unit,
1595 int opt_flags, int search_flags)
1596{
1597 return av_opt_find2(obj, name, unit, opt_flags, search_flags, NULL);
1598}
1599
1600const AVOption *av_opt_find2(void *obj, const char *name, const char *unit,
1601 int opt_flags, int search_flags, void **target_obj)
1602{
1603 const AVClass *c;
1604 const AVOption *o = NULL;
1605
1606 if(!obj)
1607 return NULL;
1608
1609 c= *(AVClass**)obj;
1610
1611 if (!c)
1612 return NULL;
1613
1614 if (search_flags & AV_OPT_SEARCH_CHILDREN) {
1615 if (search_flags & AV_OPT_SEARCH_FAKE_OBJ) {
1616 const AVClass *child = NULL;
1617 while (child = av_opt_child_class_next(c, child))
1618 if (o = av_opt_find2(&child, name, unit, opt_flags, search_flags, NULL))
1619 return o;
1620 } else {
1621 void *child = NULL;
1622 while (child = av_opt_child_next(obj, child))
1623 if (o = av_opt_find2(child, name, unit, opt_flags, search_flags, target_obj))
1624 return o;
1625 }
1626 }
1627
1628 while (o = av_opt_next(obj, o)) {
1629 if (!strcmp(o->name, name) && (o->flags & opt_flags) == opt_flags &&
1630 ((!unit && o->type != AV_OPT_TYPE_CONST) ||
1631 (unit && o->type == AV_OPT_TYPE_CONST && o->unit && !strcmp(o->unit, unit)))) {
1632 if (target_obj) {
1633 if (!(search_flags & AV_OPT_SEARCH_FAKE_OBJ))
1634 *target_obj = obj;
1635 else
1636 *target_obj = NULL;
1637 }
1638 return o;
1639 }
1640 }
1641 return NULL;
1642}
1643
1644void *av_opt_child_next(void *obj, void *prev)
1645{
1646 const AVClass *c = *(AVClass **)obj;
1647 if (c->child_next)
1648 return c->child_next(obj, prev);
1649 return NULL;
1650}
1651
1652const AVClass *av_opt_child_class_next(const AVClass *parent, const AVClass *prev)
1653{
1654 if (parent->child_class_next)
1655 return parent->child_class_next(prev);
1656 return NULL;
1657}
1658
1659void *av_opt_ptr(const AVClass *class, void *obj, const char *name)
1660{
1661 const AVOption *opt= av_opt_find2(&class, name, NULL, 0, AV_OPT_SEARCH_FAKE_OBJ, NULL);
1662 if(!opt)
1663 return NULL;
1664 return (uint8_t*)obj + opt->offset;
1665}
1666
1667static int opt_size(enum AVOptionType type)
1668{
1669 switch(type) {
1670 case AV_OPT_TYPE_BOOL:
1671 case AV_OPT_TYPE_INT:
1672 case AV_OPT_TYPE_FLAGS:
1673 return sizeof(int);
1674 case AV_OPT_TYPE_DURATION:
1675 case AV_OPT_TYPE_CHANNEL_LAYOUT:
1676 case AV_OPT_TYPE_INT64:
1677 case AV_OPT_TYPE_UINT64:
1678 return sizeof(int64_t);
1679 case AV_OPT_TYPE_DOUBLE:
1680 return sizeof(double);
1681 case AV_OPT_TYPE_FLOAT:
1682 return sizeof(float);
1683 case AV_OPT_TYPE_STRING:
1684 return sizeof(uint8_t*);
1685 case AV_OPT_TYPE_VIDEO_RATE:
1686 case AV_OPT_TYPE_RATIONAL:
1687 return sizeof(AVRational);
1688 case AV_OPT_TYPE_BINARY:
1689 return sizeof(uint8_t*) + sizeof(int);
1690 case AV_OPT_TYPE_IMAGE_SIZE:
1691 return sizeof(int[2]);
1692 case AV_OPT_TYPE_PIXEL_FMT:
1693 return sizeof(enum AVPixelFormat);
1694 case AV_OPT_TYPE_SAMPLE_FMT:
1695 return sizeof(enum AVSampleFormat);
1696 case AV_OPT_TYPE_COLOR:
1697 return 4;
1698 }
1699 return AVERROR(EINVAL);
1700}
1701
1702int av_opt_copy(void *dst, const void *src)
1703{
1704 const AVOption *o = NULL;
1705 const AVClass *c;
1706 int ret = 0;
1707
1708 if (!src)
1709 return AVERROR(EINVAL);
1710
1711 c = *(AVClass **)src;
1712 if (!c || c != *(AVClass **)dst)
1713 return AVERROR(EINVAL);
1714
1715 while ((o = av_opt_next(src, o))) {
1716 void *field_dst = (uint8_t *)dst + o->offset;
1717 void *field_src = (uint8_t *)src + o->offset;
1718 uint8_t **field_dst8 = (uint8_t **)field_dst;
1719 uint8_t **field_src8 = (uint8_t **)field_src;
1720
1721 if (o->type == AV_OPT_TYPE_STRING) {
1722 if (*field_dst8 != *field_src8)
1723 av_freep(field_dst8);
1724 *field_dst8 = av_strdup(*field_src8);
1725 if (*field_src8 && !*field_dst8)
1726 ret = AVERROR(ENOMEM);
1727 } else if (o->type == AV_OPT_TYPE_BINARY) {
1728 int len = *(int *)(field_src8 + 1);
1729 if (*field_dst8 != *field_src8)
1730 av_freep(field_dst8);
1731 *field_dst8 = av_memdup(*field_src8, len);
1732 if (len && !*field_dst8) {
1733 ret = AVERROR(ENOMEM);
1734 len = 0;
1735 }
1736 *(int *)(field_dst8 + 1) = len;
1737 } else if (o->type == AV_OPT_TYPE_CONST) {
1738 // do nothing
1739 } else if (o->type == AV_OPT_TYPE_DICT) {
1740 AVDictionary **sdict = (AVDictionary **) field_src;
1741 AVDictionary **ddict = (AVDictionary **) field_dst;
1742 if (*sdict != *ddict)
1743 av_dict_free(ddict);
1744 *ddict = NULL;
1745 av_dict_copy(ddict, *sdict, 0);
1746 if (av_dict_count(*sdict) != av_dict_count(*ddict))
1747 ret = AVERROR(ENOMEM);
1748 } else {
1749 int size = opt_size(o->type);
1750 if (size < 0)
1751 ret = size;
1752 else
1753 memcpy(field_dst, field_src, size);
1754 }
1755 }
1756 return ret;
1757}
1758
1759int av_opt_query_ranges(AVOptionRanges **ranges_arg, void *obj, const char *key, int flags)
1760{
1761 int ret;
1762 const AVClass *c = *(AVClass**)obj;
1763 int (*callback)(AVOptionRanges **, void *obj, const char *key, int flags) = NULL;
1764
1765 if (c->version > (52 << 16 | 11 << 8))
1766 callback = c->query_ranges;
1767
1768 if (!callback)
1769 callback = av_opt_query_ranges_default;
1770
1771 ret = callback(ranges_arg, obj, key, flags);
1772 if (ret >= 0) {
1773 if (!(flags & AV_OPT_MULTI_COMPONENT_RANGE))
1774 ret = 1;
1775 (*ranges_arg)->nb_components = ret;
1776 }
1777 return ret;
1778}
1779
1780int av_opt_query_ranges_default(AVOptionRanges **ranges_arg, void *obj, const char *key, int flags)
1781{
1782 AVOptionRanges *ranges = av_mallocz(sizeof(*ranges));
1783 AVOptionRange **range_array = av_mallocz(sizeof(void*));
1784 AVOptionRange *range = av_mallocz(sizeof(*range));
1785 const AVOption *field = av_opt_find(obj, key, NULL, 0, flags);
1786 int ret;
1787
1788 *ranges_arg = NULL;
1789
1790 if (!ranges || !range || !range_array || !field) {
1791 ret = AVERROR(ENOMEM);
1792 goto fail;
1793 }
1794
1795 ranges->range = range_array;
1796 ranges->range[0] = range;
1797 ranges->nb_ranges = 1;
1798 ranges->nb_components = 1;
1799 range->is_range = 1;
1800 range->value_min = field->min;
1801 range->value_max = field->max;
1802
1803 switch (field->type) {
1804 case AV_OPT_TYPE_BOOL:
1805 case AV_OPT_TYPE_INT:
1806 case AV_OPT_TYPE_INT64:
1807 case AV_OPT_TYPE_UINT64:
1808 case AV_OPT_TYPE_PIXEL_FMT:
1809 case AV_OPT_TYPE_SAMPLE_FMT:
1810 case AV_OPT_TYPE_FLOAT:
1811 case AV_OPT_TYPE_DOUBLE:
1812 case AV_OPT_TYPE_DURATION:
1813 case AV_OPT_TYPE_COLOR:
1814 case AV_OPT_TYPE_CHANNEL_LAYOUT:
1815 break;
1816 case AV_OPT_TYPE_STRING:
1817 range->component_min = 0;
1818 range->component_max = 0x10FFFF; // max unicode value
1819 range->value_min = -1;
1820 range->value_max = INT_MAX;
1821 break;
1822 case AV_OPT_TYPE_RATIONAL:
1823 range->component_min = INT_MIN;
1824 range->component_max = INT_MAX;
1825 break;
1826 case AV_OPT_TYPE_IMAGE_SIZE:
1827 range->component_min = 0;
1828 range->component_max = INT_MAX/128/8;
1829 range->value_min = 0;
1830 range->value_max = INT_MAX/8;
1831 break;
1832 case AV_OPT_TYPE_VIDEO_RATE:
1833 range->component_min = 1;
1834 range->component_max = INT_MAX;
1835 range->value_min = 1;
1836 range->value_max = INT_MAX;
1837 break;
1838 default:
1839 ret = AVERROR(ENOSYS);
1840 goto fail;
1841 }
1842
1843 *ranges_arg = ranges;
1844 return 1;
1845fail:
1846 av_free(ranges);
1847 av_free(range);
1848 av_free(range_array);
1849 return ret;
1850}
1851
1852void av_opt_freep_ranges(AVOptionRanges **rangesp)
1853{
1854 int i;
1855 AVOptionRanges *ranges = *rangesp;
1856
1857 if (!ranges)
1858 return;
1859
1860 for (i = 0; i < ranges->nb_ranges * ranges->nb_components; i++) {
1861 AVOptionRange *range = ranges->range[i];
1862 if (range) {
1863 av_freep(&range->str);
1864 av_freep(&ranges->range[i]);
1865 }
1866 }
1867 av_freep(&ranges->range);
1868 av_freep(rangesp);
1869}
1870
1871int av_opt_is_set_to_default(void *obj, const AVOption *o)
1872{
1873 int64_t i64;
1874 double d, d2;
1875 float f;
1876 AVRational q;
1877 int ret, w, h;
1878 char *str;
1879 void *dst;
1880
1881 if (!o || !obj)
1882 return AVERROR(EINVAL);
1883
1884 dst = ((uint8_t*)obj) + o->offset;
1885
1886 switch (o->type) {
1887 case AV_OPT_TYPE_CONST:
1888 return 1;
1889 case AV_OPT_TYPE_BOOL:
1890 case AV_OPT_TYPE_FLAGS:
1891 case AV_OPT_TYPE_PIXEL_FMT:
1892 case AV_OPT_TYPE_SAMPLE_FMT:
1893 case AV_OPT_TYPE_INT:
1894 case AV_OPT_TYPE_CHANNEL_LAYOUT:
1895 case AV_OPT_TYPE_DURATION:
1896 case AV_OPT_TYPE_INT64:
1897 case AV_OPT_TYPE_UINT64:
1898 read_number(o, dst, NULL, NULL, &i64);
1899 return o->default_val.i64 == i64;
1900 case AV_OPT_TYPE_STRING:
1901 str = *(char **)dst;
1902 if (str == o->default_val.str) //2 NULLs
1903 return 1;
1904 if (!str || !o->default_val.str) //1 NULL
1905 return 0;
1906 return !strcmp(str, o->default_val.str);
1907 case AV_OPT_TYPE_DOUBLE:
1908 read_number(o, dst, &d, NULL, NULL);
1909 return o->default_val.dbl == d;
1910 case AV_OPT_TYPE_FLOAT:
1911 read_number(o, dst, &d, NULL, NULL);
1912 f = o->default_val.dbl;
1913 d2 = f;
1914 return d2 == d;
1915 case AV_OPT_TYPE_RATIONAL:
1916 q = av_d2q(o->default_val.dbl, INT_MAX);
1917 return !av_cmp_q(*(AVRational*)dst, q);
1918 case AV_OPT_TYPE_BINARY: {
1919 struct {
1920 uint8_t *data;
1921 int size;
1922 } tmp = {0};
1923 int opt_size = *(int *)((void **)dst + 1);
1924 void *opt_ptr = *(void **)dst;
1925 if (!opt_size && (!o->default_val.str || !strlen(o->default_val.str)))
1926 return 1;
1927 if (!opt_size || !o->default_val.str || !strlen(o->default_val.str ))
1928 return 0;
1929 if (opt_size != strlen(o->default_val.str) / 2)
1930 return 0;
1931 ret = set_string_binary(NULL, NULL, o->default_val.str, &tmp.data);
1932 if (!ret)
1933 ret = !memcmp(opt_ptr, tmp.data, tmp.size);
1934 av_free(tmp.data);
1935 return ret;
1936 }
1937 case AV_OPT_TYPE_DICT:
1938 /* Binary and dict have not default support yet. Any pointer is not default. */
1939 return !!(*(void **)dst);
1940 case AV_OPT_TYPE_IMAGE_SIZE:
1941 if (!o->default_val.str || !strcmp(o->default_val.str, "none"))
1942 w = h = 0;
1943 else if ((ret = av_parse_video_size(&w, &h, o->default_val.str)) < 0)
1944 return ret;
1945 return (w == *(int *)dst) && (h == *((int *)dst+1));
1946 case AV_OPT_TYPE_VIDEO_RATE:
1947 q = (AVRational){0, 0};
1948 if (o->default_val.str) {
1949 if ((ret = av_parse_video_rate(&q, o->default_val.str)) < 0)
1950 return ret;
1951 }
1952 return !av_cmp_q(*(AVRational*)dst, q);
1953 case AV_OPT_TYPE_COLOR: {
1954 uint8_t color[4] = {0, 0, 0, 0};
1955 if (o->default_val.str) {
1956 if ((ret = av_parse_color(color, o->default_val.str, -1, NULL)) < 0)
1957 return ret;
1958 }
1959 return !memcmp(color, dst, sizeof(color));
1960 }
1961 default:
1962 av_log(obj, AV_LOG_WARNING, "Not supported option type: %d, option name: %s\n", o->type, o->name);
1963 break;
1964 }
1965 return AVERROR_PATCHWELCOME;
1966}
1967
1968int av_opt_is_set_to_default_by_name(void *obj, const char *name, int search_flags)
1969{
1970 const AVOption *o;
1971 void *target;
1972 if (!obj)
1973 return AVERROR(EINVAL);
1974 o = av_opt_find2(obj, name, NULL, 0, search_flags, &target);
1975 if (!o)
1976 return AVERROR_OPTION_NOT_FOUND;
1977 return av_opt_is_set_to_default(target, o);
1978}
1979
1980int av_opt_serialize(void *obj, int opt_flags, int flags, char **buffer,
1981 const char key_val_sep, const char pairs_sep)
1982{
1983 const AVOption *o = NULL;
1984 uint8_t *buf;
1985 AVBPrint bprint;
1986 int ret, cnt = 0;
1987 const char special_chars[] = {pairs_sep, key_val_sep, '\0'};
1988
1989 if (pairs_sep == '\0' || key_val_sep == '\0' || pairs_sep == key_val_sep ||
1990 pairs_sep == '\\' || key_val_sep == '\\') {
1991 av_log(obj, AV_LOG_ERROR, "Invalid separator(s) found.");
1992 return AVERROR(EINVAL);
1993 }
1994
1995 if (!obj || !buffer)
1996 return AVERROR(EINVAL);
1997
1998 *buffer = NULL;
1999 av_bprint_init(&bprint, 64, AV_BPRINT_SIZE_UNLIMITED);
2000
2001 while (o = av_opt_next(obj, o)) {
2002 if (o->type == AV_OPT_TYPE_CONST)
2003 continue;
2004 if ((flags & AV_OPT_SERIALIZE_OPT_FLAGS_EXACT) && o->flags != opt_flags)
2005 continue;
2006 else if (((o->flags & opt_flags) != opt_flags))
2007 continue;
2008 if (flags & AV_OPT_SERIALIZE_SKIP_DEFAULTS && av_opt_is_set_to_default(obj, o) > 0)
2009 continue;
2010 if ((ret = av_opt_get(obj, o->name, 0, &buf)) < 0) {
2011 av_bprint_finalize(&bprint, NULL);
2012 return ret;
2013 }
2014 if (buf) {
2015 if (cnt++)
2016 av_bprint_append_data(&bprint, &pairs_sep, 1);
2017 av_bprint_escape(&bprint, o->name, special_chars, AV_ESCAPE_MODE_BACKSLASH, 0);
2018 av_bprint_append_data(&bprint, &key_val_sep, 1);
2019 av_bprint_escape(&bprint, buf, special_chars, AV_ESCAPE_MODE_BACKSLASH, 0);
2020 av_freep(&buf);
2021 }
2022 }
2023 av_bprint_finalize(&bprint, buffer);
2024 return 0;
2025}
2026
generated by cgit at 2024-05-17 03:36:12 (GMT)