libavutil/opt.c
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 /*
  * AVOptions
  * Copyright (c) 2005 Michael Niedermayer <michaelni@gmx.at>
  *
  * This file is part of FFmpeg.
  *
  * FFmpeg is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation; either
  * version 2.1 of the License, or (at your option) any later version.
  *
  * FFmpeg is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
  * License along with FFmpeg; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
 /**
  * @file
  * AVOptions
  * @author Michael Niedermayer <michaelni@gmx.at>
  */
 
 #include "avutil.h"
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 #include "avstring.h"
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 #include "channel_layout.h"
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 #include "common.h"
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 #include "opt.h"
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 #include "eval.h"
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 #include "dict.h"
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 #include "log.h"
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 #include "parseutils.h"
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 #include "pixdesc.h"
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 #include "mathematics.h"
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 #include "samplefmt.h"
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 #include <float.h>
 
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 #if FF_API_FIND_OPT
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 //FIXME order them and do a bin search
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 const AVOption *av_find_opt(void *v, const char *name, const char *unit, int mask, int flags)
 {
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     const AVOption *o = NULL;
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     while ((o = av_next_option(v, o))) {
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         if (!strcmp(o->name, name) && (!unit || (o->unit && !strcmp(o->unit, unit))) && (o->flags & mask) == flags)
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             return o;
     }
     return NULL;
 }
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 #endif
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 #if FF_API_OLD_AVOPTIONS
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 const AVOption *av_next_option(void *obj, const AVOption *last)
 {
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     return av_opt_next(obj, last);
 }
 #endif
 
 const AVOption *av_opt_next(void *obj, const AVOption *last)
 {
e1e22851
     AVClass *class = *(AVClass**)obj;
f98dbc73
     if (!last && class && class->option && class->option[0].name)
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         return class->option;
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     if (last && last[1].name)
         return ++last;
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     return NULL;
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 }
 
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 static int read_number(const AVOption *o, void *dst, double *num, int *den, int64_t *intnum)
 {
     switch (o->type) {
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     case AV_OPT_TYPE_FLAGS:     *intnum = *(unsigned int*)dst;return 0;
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     case AV_OPT_TYPE_PIXEL_FMT:
     case AV_OPT_TYPE_SAMPLE_FMT:
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     case AV_OPT_TYPE_INT:       *intnum = *(int         *)dst;return 0;
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     case AV_OPT_TYPE_CHANNEL_LAYOUT:
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     case AV_OPT_TYPE_DURATION:
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     case AV_OPT_TYPE_INT64:     *intnum = *(int64_t     *)dst;return 0;
     case AV_OPT_TYPE_FLOAT:     *num    = *(float       *)dst;return 0;
     case AV_OPT_TYPE_DOUBLE:    *num    = *(double      *)dst;return 0;
     case AV_OPT_TYPE_RATIONAL:  *intnum = ((AVRational*)dst)->num;
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                                 *den    = ((AVRational*)dst)->den;
                                                         return 0;
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     case AV_OPT_TYPE_CONST:     *num    = o->default_val.dbl; return 0;
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     }
     return AVERROR(EINVAL);
 }
 
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 static int write_number(void *obj, const AVOption *o, void *dst, double num, int den, int64_t intnum)
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 {
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     if (o->type != AV_OPT_TYPE_FLAGS &&
         (o->max * den < num * intnum || o->min * den > num * intnum)) {
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         av_log(obj, AV_LOG_ERROR, "Value %f for parameter '%s' out of range [%g - %g]\n",
                num*intnum/den, o->name, o->min, o->max);
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         return AVERROR(ERANGE);
     }
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     if (o->type == AV_OPT_TYPE_FLAGS) {
         double d = num*intnum/den;
15b1b088
         if (d < -1.5 || d > 0xFFFFFFFF+0.5 || (llrint(d*256) & 255)) {
162126bb
             av_log(obj, AV_LOG_ERROR,
                    "Value %f for parameter '%s' is not a valid set of 32bit integer flags\n",
                    num*intnum/den, o->name);
             return AVERROR(ERANGE);
         }
     }
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     switch (o->type) {
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     case AV_OPT_TYPE_FLAGS:
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     case AV_OPT_TYPE_PIXEL_FMT:
     case AV_OPT_TYPE_SAMPLE_FMT:
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     case AV_OPT_TYPE_INT:   *(int       *)dst= llrint(num/den)*intnum; break;
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     case AV_OPT_TYPE_DURATION:
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     case AV_OPT_TYPE_CHANNEL_LAYOUT:
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     case AV_OPT_TYPE_INT64: *(int64_t   *)dst= llrint(num/den)*intnum; break;
     case AV_OPT_TYPE_FLOAT: *(float     *)dst= num*intnum/den;         break;
     case AV_OPT_TYPE_DOUBLE:*(double    *)dst= num*intnum/den;         break;
     case AV_OPT_TYPE_RATIONAL:
8f1afd3b
         if ((int)num == num) *(AVRational*)dst= (AVRational){num*intnum, den};
         else                 *(AVRational*)dst= av_d2q(num*intnum/den, 1<<24);
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         break;
     default:
         return AVERROR(EINVAL);
     }
     return 0;
 }
 
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 static const double const_values[] = {
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     M_PI,
     M_E,
     FF_QP2LAMBDA,
     0
 };
 
8f1afd3b
 static const char * const const_names[] = {
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     "PI",
     "E",
     "QP2LAMBDA",
     0
 };
 
 static int hexchar2int(char c) {
     if (c >= '0' && c <= '9') return c - '0';
     if (c >= 'a' && c <= 'f') return c - 'a' + 10;
     if (c >= 'A' && c <= 'F') return c - 'A' + 10;
     return -1;
 }
 
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 static int set_string_binary(void *obj, const AVOption *o, const char *val, uint8_t **dst)
8f1afd3b
 {
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     int *lendst = (int *)(dst + 1);
     uint8_t *bin, *ptr;
     int len = strlen(val);
 
     av_freep(dst);
     *lendst = 0;
 
     if (len & 1)
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         return AVERROR(EINVAL);
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     len /= 2;
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     ptr = bin = av_malloc(len);
     while (*val) {
         int a = hexchar2int(*val++);
         int b = hexchar2int(*val++);
         if (a < 0 || b < 0) {
             av_free(bin);
             return AVERROR(EINVAL);
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         }
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         *ptr++ = (a << 4) | b;
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     }
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     *dst = bin;
     *lendst = len;
 
     return 0;
 }
 
 static int set_string(void *obj, const AVOption *o, const char *val, uint8_t **dst)
 {
     av_freep(dst);
     *dst = av_strdup(val);
     return 0;
 }
 
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 #define DEFAULT_NUMVAL(opt) ((opt->type == AV_OPT_TYPE_INT64 || \
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                               opt->type == AV_OPT_TYPE_CONST || \
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                               opt->type == AV_OPT_TYPE_FLAGS || \
                               opt->type == AV_OPT_TYPE_INT) ? \
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                              opt->default_val.i64 : opt->default_val.dbl)
 
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 static int set_string_number(void *obj, void *target_obj, const AVOption *o, const char *val, void *dst)
c8d787d2
 {
     int ret = 0, notfirst = 0;
8f853159
     int num, den;
     char c;
 
     if (sscanf(val, "%d%*1[:/]%d%c", &num, &den, &c) == 2) {
         if ((ret = write_number(obj, o, dst, 1, den, num)) >= 0)
             return ret;
         ret = 0;
     }
 
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     for (;;) {
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         int i, den = 1;
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         char buf[256];
         int cmd = 0;
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         double d, num = 1;
         int64_t intnum = 1;
c8d787d2
 
9d5c62ba
         i = 0;
         if (*val == '+' || *val == '-') {
             if (o->type == AV_OPT_TYPE_FLAGS)
                 cmd = *(val++);
             else if (!notfirst)
                 buf[i++] = *val;
         }
c8d787d2
 
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         for (; i < sizeof(buf) - 1 && val[i] && val[i] != '+' && val[i] != '-'; i++)
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             buf[i] = val[i];
         buf[i] = 0;
 
         {
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             const AVOption *o_named = av_opt_find(target_obj, buf, o->unit, 0, 0);
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             if (o_named && o_named->type == AV_OPT_TYPE_CONST)
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                 d = DEFAULT_NUMVAL(o_named);
             else if (!strcmp(buf, "default")) d = DEFAULT_NUMVAL(o);
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             else if (!strcmp(buf, "max"    )) d = o->max;
             else if (!strcmp(buf, "min"    )) d = o->min;
             else if (!strcmp(buf, "none"   )) d = 0;
             else if (!strcmp(buf, "all"    )) d = ~0;
             else {
                 int res = av_expr_parse_and_eval(&d, buf, const_names, const_values, NULL, NULL, NULL, NULL, NULL, 0, obj);
                 if (res < 0) {
                     av_log(obj, AV_LOG_ERROR, "Unable to parse option value \"%s\"\n", val);
                     return res;
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                 }
             }
         }
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         if (o->type == AV_OPT_TYPE_FLAGS) {
059a037f
             read_number(o, dst, NULL, NULL, &intnum);
             if      (cmd == '+') d = intnum | (int64_t)d;
             else if (cmd == '-') d = intnum &~(int64_t)d;
c8d787d2
         } else {
059a037f
             read_number(o, dst, &num, &den, &intnum);
             if      (cmd == '+') d = notfirst*num*intnum/den + d;
             else if (cmd == '-') d = notfirst*num*intnum/den - d;
c8d787d2
         }
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7bb1807c
         if ((ret = write_number(obj, o, dst, d, 1, 1)) < 0)
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             return ret;
         val += i;
         if (!*val)
             return 0;
         notfirst = 1;
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     }
 
     return 0;
 }
 
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 static int set_string_image_size(void *obj, const AVOption *o, const char *val, int *dst)
 {
     int ret;
 
     if (!val || !strcmp(val, "none")) {
         dst[0] =
         dst[1] = 0;
         return 0;
     }
     ret = av_parse_video_size(dst, dst + 1, val);
     if (ret < 0)
         av_log(obj, AV_LOG_ERROR, "Unable to parse option value \"%s\" as image size\n", val);
     return ret;
 }
 
758d4e40
 static int set_string_video_rate(void *obj, const AVOption *o, const char *val, AVRational *dst)
 {
     int ret;
     if (!val) {
         ret = AVERROR(EINVAL);
     } else {
         ret = av_parse_video_rate(dst, val);
     }
     if (ret < 0)
         av_log(obj, AV_LOG_ERROR, "Unable to parse option value \"%s\" as video rate\n", val);
     return ret;
 }
 
0aedf90e
 static int set_string_color(void *obj, const AVOption *o, const char *val, uint8_t *dst)
 {
     int ret;
 
     if (!val) {
         return 0;
     } else {
         ret = av_parse_color(dst, val, -1, obj);
         if (ret < 0)
             av_log(obj, AV_LOG_ERROR, "Unable to parse option value \"%s\" as color\n", val);
         return ret;
     }
     return 0;
 }
 
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 static int set_string_fmt(void *obj, const AVOption *o, const char *val, uint8_t *dst,
                           int fmt_nb, int ((*get_fmt)(const char *)), const char *desc)
 {
55f046be
     int fmt, min, max;
1575a96b
 
     if (!val || !strcmp(val, "none")) {
         fmt = -1;
     } else {
         fmt = get_fmt(val);
         if (fmt == -1) {
             char *tail;
             fmt = strtol(val, &tail, 0);
             if (*tail || (unsigned)fmt >= fmt_nb) {
                 av_log(obj, AV_LOG_ERROR,
                        "Unable to parse option value \"%s\" as %s\n", val, desc);
                 return AVERROR(EINVAL);
             }
         }
     }
 
55f046be
     min = FFMAX(o->min, -1);
     max = FFMIN(o->max, fmt_nb-1);
 
52d928da
     // hack for compatibility with old ffmpeg
     if(min == 0 && max == 0) {
         min = -1;
         max = fmt_nb-1;
     }
 
55f046be
     if (fmt < min || fmt > max) {
         av_log(obj, AV_LOG_ERROR,
                "Value %d for parameter '%s' out of %s format range [%d - %d]\n",
                fmt, o->name, desc, min, max);
         return AVERROR(ERANGE);
     }
 
1575a96b
     *(int *)dst = fmt;
     return 0;
 }
 
 static int set_string_pixel_fmt(void *obj, const AVOption *o, const char *val, uint8_t *dst)
 {
     return set_string_fmt(obj, o, val, dst,
                           AV_PIX_FMT_NB, av_get_pix_fmt, "pixel format");
 }
 
 static int set_string_sample_fmt(void *obj, const AVOption *o, const char *val, uint8_t *dst)
 {
     return set_string_fmt(obj, o, val, dst,
                           AV_SAMPLE_FMT_NB, av_get_sample_fmt, "sample format");
 }
 
dac66da6
 #if FF_API_OLD_AVOPTIONS
8f1afd3b
 int av_set_string3(void *obj, const char *name, const char *val, int alloc, const AVOption **o_out)
 {
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     const AVOption *o = av_opt_find(obj, name, NULL, 0, 0);
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     if (o_out)
         *o_out = o;
dac66da6
     return av_opt_set(obj, name, val, 0);
 }
 #endif
 
 int av_opt_set(void *obj, const char *name, const char *val, int search_flags)
 {
2d8ccf0a
     int ret = 0;
dac66da6
     void *dst, *target_obj;
     const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
     if (!o || !target_obj)
58f84639
         return AVERROR_OPTION_NOT_FOUND;
b91fa5fc
     if (!val && (o->type != AV_OPT_TYPE_STRING &&
                  o->type != AV_OPT_TYPE_PIXEL_FMT && o->type != AV_OPT_TYPE_SAMPLE_FMT &&
8d928a9d
                  o->type != AV_OPT_TYPE_IMAGE_SIZE && o->type != AV_OPT_TYPE_VIDEO_RATE &&
8696e51b
                  o->type != AV_OPT_TYPE_DURATION && o->type != AV_OPT_TYPE_COLOR &&
                  o->type != AV_OPT_TYPE_CHANNEL_LAYOUT))
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         return AVERROR(EINVAL);
 
6a24d779
     if (o->flags & AV_OPT_FLAG_READONLY)
c8d787d2
         return AVERROR(EINVAL);
 
dac66da6
     dst = ((uint8_t*)target_obj) + o->offset;
c8d787d2
     switch (o->type) {
145f741e
     case AV_OPT_TYPE_STRING:   return set_string(obj, o, val, dst);
     case AV_OPT_TYPE_BINARY:   return set_string_binary(obj, o, val, dst);
     case AV_OPT_TYPE_FLAGS:
     case AV_OPT_TYPE_INT:
     case AV_OPT_TYPE_INT64:
     case AV_OPT_TYPE_FLOAT:
     case AV_OPT_TYPE_DOUBLE:
4d67ff8e
     case AV_OPT_TYPE_RATIONAL: return set_string_number(obj, target_obj, o, val, dst);
9648c4fe
     case AV_OPT_TYPE_IMAGE_SIZE: return set_string_image_size(obj, o, val, dst);
758d4e40
     case AV_OPT_TYPE_VIDEO_RATE: return set_string_video_rate(obj, o, val, dst);
1575a96b
     case AV_OPT_TYPE_PIXEL_FMT:  return set_string_pixel_fmt(obj, o, val, dst);
     case AV_OPT_TYPE_SAMPLE_FMT: return set_string_sample_fmt(obj, o, val, dst);
8d928a9d
     case AV_OPT_TYPE_DURATION:
         if (!val) {
             *(int64_t *)dst = 0;
             return 0;
         } else {
             if ((ret = av_parse_time(dst, val, 1)) < 0)
                 av_log(obj, AV_LOG_ERROR, "Unable to parse option value \"%s\" as duration\n", val);
             return ret;
         }
3a751eab
         break;
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     case AV_OPT_TYPE_COLOR:      return set_string_color(obj, o, val, dst);
8696e51b
     case AV_OPT_TYPE_CHANNEL_LAYOUT:
         if (!val || !strcmp(val, "none")) {
             *(int64_t *)dst = 0;
         } else {
 #if FF_API_GET_CHANNEL_LAYOUT_COMPAT
             int64_t cl = ff_get_channel_layout(val, 0);
 #else
             int64_t cl = av_get_channel_layout(val);
 #endif
             if (!cl) {
                 av_log(obj, AV_LOG_ERROR, "Unable to parse option value \"%s\" as channel layout\n", val);
                 ret = AVERROR(EINVAL);
             }
             *(int64_t *)dst = cl;
             return ret;
         }
         break;
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     }
 
c8d787d2
     av_log(obj, AV_LOG_ERROR, "Invalid option type.\n");
     return AVERROR(EINVAL);
 }
6ed04040
 
dca055be
 #define OPT_EVAL_NUMBER(name, opttype, vartype)\
     int av_opt_eval_ ## name(void *obj, const AVOption *o, const char *val, vartype *name ## _out)\
     {\
c3ecd968
         if (!o || o->type != opttype || o->flags & AV_OPT_FLAG_READONLY)\
dca055be
             return AVERROR(EINVAL);\
4d67ff8e
         return set_string_number(obj, obj, o, val, name ## _out);\
dca055be
     }
 
145f741e
 OPT_EVAL_NUMBER(flags,  AV_OPT_TYPE_FLAGS,    int)
 OPT_EVAL_NUMBER(int,    AV_OPT_TYPE_INT,      int)
 OPT_EVAL_NUMBER(int64,  AV_OPT_TYPE_INT64,    int64_t)
 OPT_EVAL_NUMBER(float,  AV_OPT_TYPE_FLOAT,    float)
 OPT_EVAL_NUMBER(double, AV_OPT_TYPE_DOUBLE,   double)
 OPT_EVAL_NUMBER(q,      AV_OPT_TYPE_RATIONAL, AVRational)
dca055be
 
dac66da6
 static int set_number(void *obj, const char *name, double num, int den, int64_t intnum,
                                   int search_flags)
b003d0be
 {
dac66da6
     void *dst, *target_obj;
     const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
6ed04040
 
dac66da6
     if (!o || !target_obj)
         return AVERROR_OPTION_NOT_FOUND;
7bb1807c
 
c3ecd968
     if (o->flags & AV_OPT_FLAG_READONLY)
         return AVERROR(EINVAL);
 
dac66da6
     dst = ((uint8_t*)target_obj) + o->offset;
     return write_number(obj, o, dst, num, den, intnum);
6ed04040
 }
 
dac66da6
 #if FF_API_OLD_AVOPTIONS
8f1afd3b
 const AVOption *av_set_double(void *obj, const char *name, double n)
 {
dac66da6
     const AVOption *o = av_opt_find(obj, name, NULL, 0, 0);
     if (set_number(obj, name, n, 1, 1, 0) < 0)
         return NULL;
     return o;
6ed04040
 }
 
8f1afd3b
 const AVOption *av_set_q(void *obj, const char *name, AVRational n)
 {
dac66da6
     const AVOption *o = av_opt_find(obj, name, NULL, 0, 0);
     if (set_number(obj, name, n.num, n.den, 1, 0) < 0)
         return NULL;
     return o;
6ed04040
 }
 
8f1afd3b
 const AVOption *av_set_int(void *obj, const char *name, int64_t n)
 {
dac66da6
     const AVOption *o = av_opt_find(obj, name, NULL, 0, 0);
     if (set_number(obj, name, 1, 1, n, 0) < 0)
         return NULL;
     return o;
 }
 #endif
 
 int av_opt_set_int(void *obj, const char *name, int64_t val, int search_flags)
 {
     return set_number(obj, name, 1, 1, val, search_flags);
 }
 
 int av_opt_set_double(void *obj, const char *name, double val, int search_flags)
 {
     return set_number(obj, name, val, 1, 1, search_flags);
 }
 
 int av_opt_set_q(void *obj, const char *name, AVRational val, int search_flags)
 {
     return set_number(obj, name, val.num, val.den, 1, search_flags);
6ed04040
 }
 
154486f9
 int av_opt_set_bin(void *obj, const char *name, const uint8_t *val, int len, int search_flags)
 {
     void *target_obj;
     const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
     uint8_t *ptr;
     uint8_t **dst;
     int *lendst;
 
     if (!o || !target_obj)
         return AVERROR_OPTION_NOT_FOUND;
 
c3ecd968
     if (o->type != AV_OPT_TYPE_BINARY || o->flags & AV_OPT_FLAG_READONLY)
154486f9
         return AVERROR(EINVAL);
 
983d04dd
     ptr = len ? av_malloc(len) : NULL;
     if (len && !ptr)
154486f9
         return AVERROR(ENOMEM);
 
     dst = (uint8_t **)(((uint8_t *)target_obj) + o->offset);
     lendst = (int *)(dst + 1);
 
     av_free(*dst);
     *dst = ptr;
     *lendst = len;
983d04dd
     if (len)
         memcpy(ptr, val, len);
154486f9
 
     return 0;
 }
 
c70ec631
 int av_opt_set_image_size(void *obj, const char *name, int w, int h, int search_flags)
 {
     void *target_obj;
     const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
 
     if (!o || !target_obj)
         return AVERROR_OPTION_NOT_FOUND;
     if (o->type != AV_OPT_TYPE_IMAGE_SIZE) {
         av_log(obj, AV_LOG_ERROR,
                "The value set by option '%s' is not an image size.\n", o->name);
         return AVERROR(EINVAL);
     }
     if (w<0 || h<0) {
         av_log(obj, AV_LOG_ERROR,
                "Invalid negative size value %dx%d for size '%s'\n", w, h, o->name);
         return AVERROR(EINVAL);
     }
     *(int *)(((uint8_t *)target_obj)             + o->offset) = w;
     *(int *)(((uint8_t *)target_obj+sizeof(int)) + o->offset) = h;
     return 0;
 }
 
7aa9af51
 int av_opt_set_video_rate(void *obj, const char *name, AVRational val, int search_flags)
 {
     void *target_obj;
     const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
 
     if (!o || !target_obj)
         return AVERROR_OPTION_NOT_FOUND;
     if (o->type != AV_OPT_TYPE_VIDEO_RATE) {
         av_log(obj, AV_LOG_ERROR,
                "The value set by option '%s' is not a video rate.\n", o->name);
         return AVERROR(EINVAL);
     }
     if (val.num <= 0 || val.den <= 0)
         return AVERROR(EINVAL);
     return set_number(obj, name, val.num, val.den, 1, search_flags);
 }
 
c70ec631
 static int set_format(void *obj, const char *name, int fmt, int search_flags,
c9ff3221
                       enum AVOptionType type, const char *desc, int nb_fmts)
c70ec631
 {
     void *target_obj;
     const AVOption *o = av_opt_find2(obj, name, NULL, 0,
                                      search_flags, &target_obj);
c9ff3221
     int min, max;
     const AVClass *class = *(AVClass **)obj;
 
c70ec631
     if (!o || !target_obj)
         return AVERROR_OPTION_NOT_FOUND;
     if (o->type != type) {
         av_log(obj, AV_LOG_ERROR,
                "The value set by option '%s' is not a %s format", name, desc);
         return AVERROR(EINVAL);
     }
 
792845e4
 #if LIBAVUTIL_VERSION_MAJOR < 54
c9ff3221
     if (class->version && class->version < AV_VERSION_INT(52, 11, 100)) {
         min = -1;
         max = nb_fmts-1;
     } else
 #endif
     {
e2b54464
         min = FFMAX(o->min, -1);
         max = FFMIN(o->max, nb_fmts-1);
c9ff3221
     }
     if (fmt < min || fmt > max) {
c70ec631
         av_log(obj, AV_LOG_ERROR,
c9ff3221
                "Value %d for parameter '%s' out of %s format range [%d - %d]\n",
                fmt, name, desc, min, max);
c70ec631
         return AVERROR(ERANGE);
     }
     *(int *)(((uint8_t *)target_obj) + o->offset) = fmt;
     return 0;
 }
 
 int av_opt_set_pixel_fmt(void *obj, const char *name, enum AVPixelFormat fmt, int search_flags)
 {
c9ff3221
     return set_format(obj, name, fmt, search_flags, AV_OPT_TYPE_PIXEL_FMT, "pixel", AV_PIX_FMT_NB);
c70ec631
 }
 
 int av_opt_set_sample_fmt(void *obj, const char *name, enum AVSampleFormat fmt, int search_flags)
 {
c9ff3221
     return set_format(obj, name, fmt, search_flags, AV_OPT_TYPE_SAMPLE_FMT, "sample", AV_SAMPLE_FMT_NB);
c70ec631
 }
 
8696e51b
 int av_opt_set_channel_layout(void *obj, const char *name, int64_t cl, int search_flags)
 {
     void *target_obj;
     const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
 
     if (!o || !target_obj)
         return AVERROR_OPTION_NOT_FOUND;
     if (o->type != AV_OPT_TYPE_CHANNEL_LAYOUT) {
         av_log(obj, AV_LOG_ERROR,
                "The value set by option '%s' is not a channel layout.\n", o->name);
         return AVERROR(EINVAL);
     }
     *(int *)(((int64_t *)target_obj) + o->offset) = cl;
     return 0;
 }
 
41d9d51a
 #if FF_API_OLD_AVOPTIONS
6ed04040
 /**
  *
  * @param buf a buffer which is used for returning non string values as strings, can be NULL
  * @param buf_len allocated length in bytes of buf
  */
8f1afd3b
 const char *av_get_string(void *obj, const char *name, const AVOption **o_out, char *buf, int buf_len)
 {
c4fd1d34
     const AVOption *o = av_opt_find(obj, name, NULL, 0, AV_OPT_SEARCH_CHILDREN);
6ed04040
     void *dst;
     uint8_t *bin;
     int len, i;
4dbcdfa8
     if (!o)
6ed04040
         return NULL;
145f741e
     if (o->type != AV_OPT_TYPE_STRING && (!buf || !buf_len))
6ed04040
         return NULL;
 
     dst= ((uint8_t*)obj) + o->offset;
8f1afd3b
     if (o_out) *o_out= o;
6ed04040
 
8f1afd3b
     switch (o->type) {
145f741e
     case AV_OPT_TYPE_FLAGS:     snprintf(buf, buf_len, "0x%08X",*(int    *)dst);break;
     case AV_OPT_TYPE_INT:       snprintf(buf, buf_len, "%d" , *(int    *)dst);break;
     case AV_OPT_TYPE_INT64:     snprintf(buf, buf_len, "%"PRId64, *(int64_t*)dst);break;
     case AV_OPT_TYPE_FLOAT:     snprintf(buf, buf_len, "%f" , *(float  *)dst);break;
     case AV_OPT_TYPE_DOUBLE:    snprintf(buf, buf_len, "%f" , *(double *)dst);break;
     case AV_OPT_TYPE_RATIONAL:  snprintf(buf, buf_len, "%d/%d", ((AVRational*)dst)->num, ((AVRational*)dst)->den);break;
da31e537
     case AV_OPT_TYPE_CONST:     snprintf(buf, buf_len, "%f" , o->default_val.dbl);break;
145f741e
     case AV_OPT_TYPE_STRING:    return *(void**)dst;
     case AV_OPT_TYPE_BINARY:
6ed04040
         len = *(int*)(((uint8_t *)dst) + sizeof(uint8_t *));
8f1afd3b
         if (len >= (buf_len + 1)/2) return NULL;
6ed04040
         bin = *(uint8_t**)dst;
8f1afd3b
         for (i = 0; i < len; i++) snprintf(buf + i*2, 3, "%02X", bin[i]);
6ed04040
         break;
     default: return NULL;
     }
     return buf;
 }
41d9d51a
 #endif
6ed04040
 
41d9d51a
 int av_opt_get(void *obj, const char *name, int search_flags, uint8_t **out_val)
8f1afd3b
 {
41d9d51a
     void *dst, *target_obj;
     const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
     uint8_t *bin, buf[128];
     int len, i, ret;
8d928a9d
     int64_t i64;
6ed04040
 
f884ef00
     if (!o || !target_obj || (o->offset<=0 && o->type != AV_OPT_TYPE_CONST))
41d9d51a
         return AVERROR_OPTION_NOT_FOUND;
6ed04040
 
41d9d51a
     dst = (uint8_t*)target_obj + o->offset;
6ed04040
 
41d9d51a
     buf[0] = 0;
8f1afd3b
     switch (o->type) {
145f741e
     case AV_OPT_TYPE_FLAGS:     ret = snprintf(buf, sizeof(buf), "0x%08X",  *(int    *)dst);break;
     case AV_OPT_TYPE_INT:       ret = snprintf(buf, sizeof(buf), "%d" ,     *(int    *)dst);break;
     case AV_OPT_TYPE_INT64:     ret = snprintf(buf, sizeof(buf), "%"PRId64, *(int64_t*)dst);break;
     case AV_OPT_TYPE_FLOAT:     ret = snprintf(buf, sizeof(buf), "%f" ,     *(float  *)dst);break;
     case AV_OPT_TYPE_DOUBLE:    ret = snprintf(buf, sizeof(buf), "%f" ,     *(double *)dst);break;
7aa9af51
     case AV_OPT_TYPE_VIDEO_RATE:
145f741e
     case AV_OPT_TYPE_RATIONAL:  ret = snprintf(buf, sizeof(buf), "%d/%d",   ((AVRational*)dst)->num, ((AVRational*)dst)->den);break;
f884ef00
     case AV_OPT_TYPE_CONST:     ret = snprintf(buf, sizeof(buf), "%f" ,     o->default_val.dbl);break;
145f741e
     case AV_OPT_TYPE_STRING:
41d9d51a
         if (*(uint8_t**)dst)
             *out_val = av_strdup(*(uint8_t**)dst);
         else
             *out_val = av_strdup("");
         return 0;
145f741e
     case AV_OPT_TYPE_BINARY:
41d9d51a
         len = *(int*)(((uint8_t *)dst) + sizeof(uint8_t *));
         if ((uint64_t)len*2 + 1 > INT_MAX)
             return AVERROR(EINVAL);
         if (!(*out_val = av_malloc(len*2 + 1)))
             return AVERROR(ENOMEM);
         bin = *(uint8_t**)dst;
         for (i = 0; i < len; i++)
             snprintf(*out_val + i*2, 3, "%02X", bin[i]);
         return 0;
2ec3e576
     case AV_OPT_TYPE_IMAGE_SIZE:
         ret = snprintf(buf, sizeof(buf), "%dx%d", ((int *)dst)[0], ((int *)dst)[1]);
         break;
d9b0d75c
     case AV_OPT_TYPE_PIXEL_FMT:
ac627b3d
         ret = snprintf(buf, sizeof(buf), "%s", (char *)av_x_if_null(av_get_pix_fmt_name(*(enum AVPixelFormat *)dst), "none"));
d9b0d75c
         break;
481fdeee
     case AV_OPT_TYPE_SAMPLE_FMT:
         ret = snprintf(buf, sizeof(buf), "%s", (char *)av_x_if_null(av_get_sample_fmt_name(*(enum AVSampleFormat *)dst), "none"));
         break;
8d928a9d
     case AV_OPT_TYPE_DURATION:
         i64 = *(int64_t *)dst;
         ret = snprintf(buf, sizeof(buf), "%"PRIi64"d:%02d:%02d.%06d",
                        i64 / 3600000000, (int)((i64 / 60000000) % 60),
                        (int)((i64 / 1000000) % 60), (int)(i64 % 1000000));
         break;
3a751eab
     case AV_OPT_TYPE_COLOR:
         ret = snprintf(buf, sizeof(buf), "0x%02x%02x%02x%02x", ((int *)dst)[0], ((int *)dst)[1], ((int *)dst)[2], ((int *)dst)[3]);
         break;
8696e51b
     case AV_OPT_TYPE_CHANNEL_LAYOUT:
         i64 = *(int64_t *)dst;
         ret = snprintf(buf, sizeof(buf), "0x%"PRIx64, i64);
         break;
41d9d51a
     default:
         return AVERROR(EINVAL);
6ed04040
     }
41d9d51a
 
     if (ret >= sizeof(buf))
         return AVERROR(EINVAL);
     *out_val = av_strdup(buf);
     return 0;
 }
 
 static int get_number(void *obj, const char *name, const AVOption **o_out, double *num, int *den, int64_t *intnum,
                       int search_flags)
 {
     void *dst, *target_obj;
     const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
     if (!o || !target_obj)
6ed04040
         goto error;
 
41d9d51a
     dst = ((uint8_t*)target_obj) + o->offset;
6ed04040
 
8f1afd3b
     if (o_out) *o_out= o;
6ed04040
 
059a037f
     return read_number(o, dst, num, den, intnum);
 
6ed04040
 error:
     *den=*intnum=0;
     return -1;
 }
 
41d9d51a
 #if FF_API_OLD_AVOPTIONS
8f1afd3b
 double av_get_double(void *obj, const char *name, const AVOption **o_out)
 {
6ed04040
     int64_t intnum=1;
     double num=1;
     int den=1;
 
41d9d51a
     if (get_number(obj, name, o_out, &num, &den, &intnum, 0) < 0)
80068da3
         return NAN;
6ed04040
     return num*intnum/den;
 }
 
8f1afd3b
 AVRational av_get_q(void *obj, const char *name, const AVOption **o_out)
 {
6ed04040
     int64_t intnum=1;
     double num=1;
     int den=1;
 
41d9d51a
     if (get_number(obj, name, o_out, &num, &den, &intnum, 0) < 0)
80068da3
         return (AVRational){0, 0};
8f1afd3b
     if (num == 1.0 && (int)intnum == intnum)
6ed04040
         return (AVRational){intnum, den};
     else
         return av_d2q(num*intnum/den, 1<<24);
 }
 
8f1afd3b
 int64_t av_get_int(void *obj, const char *name, const AVOption **o_out)
 {
6ed04040
     int64_t intnum=1;
     double num=1;
     int den=1;
 
41d9d51a
     if (get_number(obj, name, o_out, &num, &den, &intnum, 0) < 0)
8089b7fa
         return -1;
6ed04040
     return num*intnum/den;
 }
41d9d51a
 #endif
 
 int av_opt_get_int(void *obj, const char *name, int search_flags, int64_t *out_val)
 {
     int64_t intnum = 1;
     double     num = 1;
     int   ret, den = 1;
 
     if ((ret = get_number(obj, name, NULL, &num, &den, &intnum, search_flags)) < 0)
         return ret;
     *out_val = num*intnum/den;
     return 0;
 }
 
 int av_opt_get_double(void *obj, const char *name, int search_flags, double *out_val)
 {
     int64_t intnum = 1;
     double     num = 1;
     int   ret, den = 1;
 
     if ((ret = get_number(obj, name, NULL, &num, &den, &intnum, search_flags)) < 0)
         return ret;
     *out_val = num*intnum/den;
     return 0;
 }
 
 int av_opt_get_q(void *obj, const char *name, int search_flags, AVRational *out_val)
 {
     int64_t intnum = 1;
     double     num = 1;
     int   ret, den = 1;
 
     if ((ret = get_number(obj, name, NULL, &num, &den, &intnum, search_flags)) < 0)
         return ret;
 
     if (num == 1.0 && (int)intnum == intnum)
         *out_val = (AVRational){intnum, den};
     else
         *out_val = av_d2q(num*intnum/den, 1<<24);
     return 0;
 }
6ed04040
 
c70ec631
 int av_opt_get_image_size(void *obj, const char *name, int search_flags, int *w_out, int *h_out)
 {
     void *dst, *target_obj;
     const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
     if (!o || !target_obj)
         return AVERROR_OPTION_NOT_FOUND;
     if (o->type != AV_OPT_TYPE_IMAGE_SIZE) {
         av_log(obj, AV_LOG_ERROR,
                "The value for option '%s' is not an image size.\n", name);
         return AVERROR(EINVAL);
     }
 
     dst = ((uint8_t*)target_obj) + o->offset;
     if (w_out) *w_out = *(int *)dst;
     if (h_out) *h_out = *((int *)dst+1);
     return 0;
 }
 
7aa9af51
 int av_opt_get_video_rate(void *obj, const char *name, int search_flags, AVRational *out_val)
 {
     int64_t intnum = 1;
     double     num = 1;
     int   ret, den = 1;
 
     if ((ret = get_number(obj, name, NULL, &num, &den, &intnum, search_flags)) < 0)
         return ret;
 
     if (num == 1.0 && (int)intnum == intnum)
         *out_val = (AVRational){intnum, den};
     else
         *out_val = av_d2q(num*intnum/den, 1<<24);
     return 0;
 }
 
c70ec631
 static int get_format(void *obj, const char *name, int search_flags, int *out_fmt,
                       enum AVOptionType type, const char *desc)
 {
     void *dst, *target_obj;
     const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
     if (!o || !target_obj)
         return AVERROR_OPTION_NOT_FOUND;
     if (o->type != type) {
         av_log(obj, AV_LOG_ERROR,
                "The value for option '%s' is not a %s format.\n", desc, name);
         return AVERROR(EINVAL);
     }
 
     dst = ((uint8_t*)target_obj) + o->offset;
     *out_fmt = *(int *)dst;
     return 0;
 }
 
 int av_opt_get_pixel_fmt(void *obj, const char *name, int search_flags, enum AVPixelFormat *out_fmt)
 {
     return get_format(obj, name, search_flags, out_fmt, AV_OPT_TYPE_PIXEL_FMT, "pixel");
 }
 
 int av_opt_get_sample_fmt(void *obj, const char *name, int search_flags, enum AVSampleFormat *out_fmt)
 {
     return get_format(obj, name, search_flags, out_fmt, AV_OPT_TYPE_SAMPLE_FMT, "sample");
 }
 
8696e51b
 int av_opt_get_channel_layout(void *obj, const char *name, int search_flags, int64_t *cl)
 {
     void *dst, *target_obj;
     const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
     if (!o || !target_obj)
         return AVERROR_OPTION_NOT_FOUND;
     if (o->type != AV_OPT_TYPE_CHANNEL_LAYOUT) {
         av_log(obj, AV_LOG_ERROR,
                "The value for option '%s' is not a channel layout.\n", name);
         return AVERROR(EINVAL);
     }
 
     dst = ((uint8_t*)target_obj) + o->offset;
     *cl = *(int64_t *)dst;
     return 0;
 }
 
cb7c11cc
 int av_opt_flag_is_set(void *obj, const char *field_name, const char *flag_name)
 {
3b3ea346
     const AVOption *field = av_opt_find(obj, field_name, NULL, 0, 0);
299234a0
     const AVOption *flag  = av_opt_find(obj, flag_name,
                                         field ? field->unit : NULL, 0, 0);
3b3ea346
     int64_t res;
cb7c11cc
 
145f741e
     if (!field || !flag || flag->type != AV_OPT_TYPE_CONST ||
3b3ea346
         av_opt_get_int(obj, field_name, 0, &res) < 0)
cb7c11cc
         return 0;
124134e4
     return res & flag->default_val.i64;
cb7c11cc
 }
 
f4ceca62
 static void log_value(void *av_log_obj, int level, double d)
 {
     if      (d == INT_MAX) {
         av_log(av_log_obj, level, "INT_MAX");
     } else if (d == INT_MIN) {
         av_log(av_log_obj, level, "INT_MIN");
29032671
     } else if (d == UINT32_MAX) {
         av_log(av_log_obj, level, "UINT32_MAX");
f4ceca62
     } else if (d == (double)INT64_MAX) {
         av_log(av_log_obj, level, "I64_MAX");
     } else if (d == INT64_MIN) {
         av_log(av_log_obj, level, "I64_MIN");
     } else if (d == FLT_MAX) {
         av_log(av_log_obj, level, "FLT_MAX");
     } else if (d == FLT_MIN) {
         av_log(av_log_obj, level, "FLT_MIN");
29032671
     } else if (d == -FLT_MAX) {
         av_log(av_log_obj, level, "-FLT_MAX");
     } else if (d == -FLT_MIN) {
         av_log(av_log_obj, level, "-FLT_MIN");
     } else if (d == DBL_MAX) {
         av_log(av_log_obj, level, "DBL_MAX");
     } else if (d == DBL_MIN) {
         av_log(av_log_obj, level, "DBL_MIN");
     } else if (d == -DBL_MAX) {
         av_log(av_log_obj, level, "-DBL_MAX");
     } else if (d == -DBL_MIN) {
         av_log(av_log_obj, level, "-DBL_MIN");
f4ceca62
     } else {
f4946472
         av_log(av_log_obj, level, "%g", d);
f4ceca62
     }
 }
 
6ed04040
 static void opt_list(void *obj, void *av_log_obj, const char *unit,
                      int req_flags, int rej_flags)
 {
     const AVOption *opt=NULL;
f4ceca62
     AVOptionRanges *r;
     int i;
6ed04040
 
3b3ea346
     while ((opt = av_opt_next(obj, opt))) {
6ed04040
         if (!(opt->flags & req_flags) || (opt->flags & rej_flags))
             continue;
 
         /* Don't print CONST's on level one.
          * Don't print anything but CONST's on level two.
          * Only print items from the requested unit.
          */
145f741e
         if (!unit && opt->type==AV_OPT_TYPE_CONST)
6ed04040
             continue;
145f741e
         else if (unit && opt->type!=AV_OPT_TYPE_CONST)
6ed04040
             continue;
145f741e
         else if (unit && opt->type==AV_OPT_TYPE_CONST && strcmp(unit, opt->unit))
6ed04040
             continue;
145f741e
         else if (unit && opt->type == AV_OPT_TYPE_CONST)
d00dcb8c
             av_log(av_log_obj, AV_LOG_INFO, "     %-15s ", opt->name);
6ed04040
         else
d00dcb8c
             av_log(av_log_obj, AV_LOG_INFO, "  %s%-17s ",
                    (opt->flags & AV_OPT_FLAG_FILTERING_PARAM) ? "" : "-",
                    opt->name);
6ed04040
 
8f1afd3b
         switch (opt->type) {
145f741e
             case AV_OPT_TYPE_FLAGS:
e0a553d5
                 av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<flags>");
6ed04040
                 break;
145f741e
             case AV_OPT_TYPE_INT:
e0a553d5
                 av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<int>");
6ed04040
                 break;
145f741e
             case AV_OPT_TYPE_INT64:
e0a553d5
                 av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<int64>");
6ed04040
                 break;
145f741e
             case AV_OPT_TYPE_DOUBLE:
e0a553d5
                 av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<double>");
6ed04040
                 break;
145f741e
             case AV_OPT_TYPE_FLOAT:
e0a553d5
                 av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<float>");
6ed04040
                 break;
145f741e
             case AV_OPT_TYPE_STRING:
e0a553d5
                 av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<string>");
6ed04040
                 break;
145f741e
             case AV_OPT_TYPE_RATIONAL:
e0a553d5
                 av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<rational>");
6ed04040
                 break;
145f741e
             case AV_OPT_TYPE_BINARY:
e0a553d5
                 av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<binary>");
6ed04040
                 break;
2ec3e576
             case AV_OPT_TYPE_IMAGE_SIZE:
e0a553d5
                 av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<image_size>");
2ec3e576
                 break;
7aa9af51
             case AV_OPT_TYPE_VIDEO_RATE:
                 av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<video_rate>");
                 break;
d9b0d75c
             case AV_OPT_TYPE_PIXEL_FMT:
e0a553d5
                 av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<pix_fmt>");
d9b0d75c
                 break;
481fdeee
             case AV_OPT_TYPE_SAMPLE_FMT:
e0a553d5
                 av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<sample_fmt>");
481fdeee
                 break;
8d928a9d
             case AV_OPT_TYPE_DURATION:
                 av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<duration>");
                 break;
3a751eab
             case AV_OPT_TYPE_COLOR:
                 av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<color>");
                 break;
8696e51b
             case AV_OPT_TYPE_CHANNEL_LAYOUT:
                 av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<channel_layout>");
                 break;
145f741e
             case AV_OPT_TYPE_CONST:
6ed04040
             default:
e0a553d5
                 av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "");
6ed04040
                 break;
         }
         av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_ENCODING_PARAM) ? 'E' : '.');
         av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_DECODING_PARAM) ? 'D' : '.');
a25346e6
         av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_FILTERING_PARAM)? 'F' : '.');
6ed04040
         av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_VIDEO_PARAM   ) ? 'V' : '.');
         av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_AUDIO_PARAM   ) ? 'A' : '.');
         av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_SUBTITLE_PARAM) ? 'S' : '.');
c3ecd968
         av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_EXPORT)         ? 'X' : '.');
         av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_READONLY)       ? 'R' : '.');
6ed04040
 
f4946472
         if (opt->help)
             av_log(av_log_obj, AV_LOG_INFO, " %s", opt->help);
 
0ad654d4
         if (av_opt_query_ranges(&r, obj, opt->name, AV_OPT_SEARCH_FAKE_OBJ) >= 0) {
f4ceca62
             switch (opt->type) {
             case AV_OPT_TYPE_INT:
             case AV_OPT_TYPE_INT64:
             case AV_OPT_TYPE_DOUBLE:
             case AV_OPT_TYPE_FLOAT:
             case AV_OPT_TYPE_RATIONAL:
f4946472
                 for (i = 0; i < r->nb_ranges; i++) {
                     av_log(av_log_obj, AV_LOG_INFO, " (from ");
f4ceca62
                     log_value(av_log_obj, AV_LOG_INFO, r->range[i]->value_min);
f4946472
                     av_log(av_log_obj, AV_LOG_INFO, " to ");
f4ceca62
                     log_value(av_log_obj, AV_LOG_INFO, r->range[i]->value_max);
f4946472
                     av_log(av_log_obj, AV_LOG_INFO, ")");
f4ceca62
                 }
                 break;
             }
             av_opt_freep_ranges(&r);
         }
 
a64248d1
         if (opt->type != AV_OPT_TYPE_CONST  &&
             opt->type != AV_OPT_TYPE_BINARY &&
                 !((opt->type == AV_OPT_TYPE_COLOR      ||
                    opt->type == AV_OPT_TYPE_IMAGE_SIZE ||
                    opt->type == AV_OPT_TYPE_STRING     ||
                    opt->type == AV_OPT_TYPE_VIDEO_RATE) &&
                   !opt->default_val.str)) {
             av_log(av_log_obj, AV_LOG_INFO, " (default ");
             switch (opt->type) {
             case AV_OPT_TYPE_FLAGS:
18b1381c
                 av_log(av_log_obj, AV_LOG_INFO, "%"PRIX64, opt->default_val.i64);
a64248d1
                 break;
             case AV_OPT_TYPE_DURATION:
             case AV_OPT_TYPE_INT:
             case AV_OPT_TYPE_INT64:
                 log_value(av_log_obj, AV_LOG_INFO, opt->default_val.i64);
                 break;
             case AV_OPT_TYPE_DOUBLE:
             case AV_OPT_TYPE_FLOAT:
                 log_value(av_log_obj, AV_LOG_INFO, opt->default_val.dbl);
                 break;
             case AV_OPT_TYPE_RATIONAL: {
                 AVRational q = av_d2q(opt->default_val.dbl, INT_MAX);
                 av_log(av_log_obj, AV_LOG_INFO, "%d/%d", q.num, q.den); }
                 break;
fd84b6fd
             case AV_OPT_TYPE_PIXEL_FMT:
0b5d1b88
                 av_log(av_log_obj, AV_LOG_INFO, "%s", (char *)av_x_if_null(av_get_pix_fmt_name(opt->default_val.i64), "none"));
fd84b6fd
                 break;
             case AV_OPT_TYPE_SAMPLE_FMT:
0b5d1b88
                 av_log(av_log_obj, AV_LOG_INFO, "%s", (char *)av_x_if_null(av_get_sample_fmt_name(opt->default_val.i64), "none"));
fd84b6fd
                 break;
a64248d1
             case AV_OPT_TYPE_COLOR:
             case AV_OPT_TYPE_IMAGE_SIZE:
             case AV_OPT_TYPE_STRING:
             case AV_OPT_TYPE_VIDEO_RATE:
                 av_log(av_log_obj, AV_LOG_INFO, "\"%s\"", opt->default_val.str);
8696e51b
                 break;
             case AV_OPT_TYPE_CHANNEL_LAYOUT:
                 av_log(av_log_obj, AV_LOG_INFO, "0x%"PRIx64, opt->default_val.i64);
                 break;
a64248d1
             }
             av_log(av_log_obj, AV_LOG_INFO, ")");
         }
 
6ed04040
         av_log(av_log_obj, AV_LOG_INFO, "\n");
145f741e
         if (opt->unit && opt->type != AV_OPT_TYPE_CONST) {
6ed04040
             opt_list(obj, av_log_obj, opt->unit, req_flags, rej_flags);
         }
     }
 }
 
 int av_opt_show2(void *obj, void *av_log_obj, int req_flags, int rej_flags)
 {
8f1afd3b
     if (!obj)
6ed04040
         return -1;
 
     av_log(av_log_obj, AV_LOG_INFO, "%s AVOptions:\n", (*(AVClass**)obj)->class_name);
 
     opt_list(obj, av_log_obj, NULL, req_flags, rej_flags);
 
     return 0;
 }
 
79eff913
 void av_opt_set_defaults(void *s)
 {
 #if FF_API_OLD_AVOPTIONS
     av_opt_set_defaults2(s, 0, 0);
 }
 
6ed04040
 void av_opt_set_defaults2(void *s, int mask, int flags)
 {
79eff913
 #endif
08d0969c
     const AVClass *class = *(AVClass **)s;
6ed04040
     const AVOption *opt = NULL;
3b3ea346
     while ((opt = av_opt_next(s, opt)) != NULL) {
e8ac905d
         void *dst = ((uint8_t*)s) + opt->offset;
79eff913
 #if FF_API_OLD_AVOPTIONS
8f1afd3b
         if ((opt->flags & mask) != flags)
6ed04040
             continue;
79eff913
 #endif
6a24d779
 
c3ecd968
         if (opt->flags & AV_OPT_FLAG_READONLY)
             continue;
 
8f1afd3b
         switch (opt->type) {
145f741e
             case AV_OPT_TYPE_CONST:
6ed04040
                 /* Nothing to be done here */
             break;
d58dd4b5
             case AV_OPT_TYPE_FLAGS:
e6153f17
             case AV_OPT_TYPE_INT:
145f741e
             case AV_OPT_TYPE_INT64:
8d928a9d
             case AV_OPT_TYPE_DURATION:
8696e51b
             case AV_OPT_TYPE_CHANNEL_LAYOUT:
e8ac905d
                 write_number(s, opt, dst, 1, 1, opt->default_val.i64);
6ed04040
             break;
145f741e
             case AV_OPT_TYPE_DOUBLE:
             case AV_OPT_TYPE_FLOAT: {
6ed04040
                 double val;
85770f2a
                 val = opt->default_val.dbl;
e8ac905d
                 write_number(s, opt, dst, val, 1, 1);
6ed04040
             }
             break;
145f741e
             case AV_OPT_TYPE_RATIONAL: {
6ed04040
                 AVRational val;
ffb5a0d5
                 val = av_d2q(opt->default_val.dbl, INT_MAX);
e8ac905d
                 write_number(s, opt, dst, 1, val.den, val.num);
6ed04040
             }
             break;
3a751eab
             case AV_OPT_TYPE_COLOR:
e8ac905d
                 set_string_color(s, opt, opt->default_val.str, dst);
                 break;
145f741e
             case AV_OPT_TYPE_STRING:
e8ac905d
                 set_string(s, opt, opt->default_val.str, dst);
                 break;
2ec3e576
             case AV_OPT_TYPE_IMAGE_SIZE:
e8ac905d
                 set_string_image_size(s, opt, opt->default_val.str, dst);
                 break;
7aa9af51
             case AV_OPT_TYPE_VIDEO_RATE:
e8ac905d
                 set_string_video_rate(s, opt, opt->default_val.str, dst);
08d0969c
                 break;
d9b0d75c
             case AV_OPT_TYPE_PIXEL_FMT:
792845e4
 #if LIBAVUTIL_VERSION_MAJOR < 54
08d0969c
                 if (class->version && class->version < AV_VERSION_INT(52, 10, 100))
                     av_opt_set(s, opt->name, opt->default_val.str, 0);
                 else
 #endif
e8ac905d
                     write_number(s, opt, dst, 1, 1, opt->default_val.i64);
08d0969c
                 break;
b91fa5fc
             case AV_OPT_TYPE_SAMPLE_FMT:
792845e4
 #if LIBAVUTIL_VERSION_MAJOR < 54
08d0969c
                 if (class->version && class->version < AV_VERSION_INT(52, 10, 100))
                     av_opt_set(s, opt->name, opt->default_val.str, 0);
                 else
 #endif
e8ac905d
                     write_number(s, opt, dst, 1, 1, opt->default_val.i64);
6c117d43
                 break;
145f741e
             case AV_OPT_TYPE_BINARY:
6c117d43
                 /* Cannot set default for binary */
6ed04040
             break;
             default:
                 av_log(s, AV_LOG_DEBUG, "AVOption type %d of option %s not implemented yet\n", opt->type, opt->name);
         }
     }
 }
 
c85eef4e
 /**
  * Store the value in the field in ctx that is named like key.
  * ctx must be an AVClass context, storing is done using AVOptions.
  *
  * @param buf the string to parse, buf will be updated to point at the
  * separator just after the parsed key/value pair
  * @param key_val_sep a 0-terminated list of characters used to
  * separate key from value
  * @param pairs_sep a 0-terminated list of characters used to separate
  * two pairs from each other
  * @return 0 if the key/value pair has been successfully parsed and
  * set, or a negative value corresponding to an AVERROR code in case
  * of error:
  * AVERROR(EINVAL) if the key/value pair cannot be parsed,
3b3ea346
  * the error code issued by av_opt_set() if the key/value pair
c85eef4e
  * cannot be set
  */
 static int parse_key_value_pair(void *ctx, const char **buf,
                                 const char *key_val_sep, const char *pairs_sep)
 {
     char *key = av_get_token(buf, key_val_sep);
     char *val;
     int ret;
 
bcc94328
     if (!key)
         return AVERROR(ENOMEM);
 
c85eef4e
     if (*key && strspn(*buf, key_val_sep)) {
         (*buf)++;
         val = av_get_token(buf, pairs_sep);
bcc94328
         if (!val) {
             av_freep(&key);
             return AVERROR(ENOMEM);
         }
c85eef4e
     } else {
         av_log(ctx, AV_LOG_ERROR, "Missing key or no key/value separator found after key '%s'\n", key);
         av_free(key);
         return AVERROR(EINVAL);
     }
 
d4f8d717
     av_log(ctx, AV_LOG_DEBUG, "Setting entry with key '%s' to value '%s'\n", key, val);
c85eef4e
 
cf53704c
     ret = av_opt_set(ctx, key, val, AV_OPT_SEARCH_CHILDREN);
58f84639
     if (ret == AVERROR_OPTION_NOT_FOUND)
c85eef4e
         av_log(ctx, AV_LOG_ERROR, "Key '%s' not found.\n", key);
 
     av_free(key);
     av_free(val);
     return ret;
 }
 
 int av_set_options_string(void *ctx, const char *opts,
                           const char *key_val_sep, const char *pairs_sep)
 {
     int ret, count = 0;
 
141f0354
     if (!opts)
         return 0;
85afbb1d
 
c85eef4e
     while (*opts) {
         if ((ret = parse_key_value_pair(ctx, &opts, key_val_sep, pairs_sep)) < 0)
             return ret;
         count++;
 
         if (*opts)
             opts++;
     }
 
     return count;
 }
 
438978fb
 #define WHITESPACES " \n\t"
 
 static int is_key_char(char c)
 {
     return (unsigned)((c | 32) - 'a') < 26 ||
            (unsigned)(c - '0') < 10 ||
            c == '-' || c == '_' || c == '/' || c == '.';
 }
 
 /**
e4b1fcd4
  * Read a key from a string.
  *
  * The key consists of is_key_char characters and must be terminated by a
e021eeb9
  * character from the delim string; spaces are ignored.
e4b1fcd4
  *
  * @return  0 for success (even with ellipsis), <0 for failure
438978fb
  */
e021eeb9
 static int get_key(const char **ropts, const char *delim, char **rkey)
438978fb
 {
     const char *opts = *ropts;
e021eeb9
     const char *key_start, *key_end;
438978fb
 
e021eeb9
     key_start = opts += strspn(opts, WHITESPACES);
     while (is_key_char(*opts))
         opts++;
     key_end = opts;
438978fb
     opts += strspn(opts, WHITESPACES);
     if (!*opts || !strchr(delim, *opts))
         return AVERROR(EINVAL);
     opts++;
e021eeb9
     if (!(*rkey = av_malloc(key_end - key_start + 1)))
         return AVERROR(ENOMEM);
     memcpy(*rkey, key_start, key_end - key_start);
     (*rkey)[key_end - key_start] = 0;
438978fb
     *ropts = opts;
     return 0;
 }
 
3bdf4971
 int av_opt_get_key_value(const char **ropts,
                          const char *key_val_sep, const char *pairs_sep,
                          unsigned flags,
                          char **rkey, char **rval)
 {
     int ret;
     char *key = NULL, *val;
     const char *opts = *ropts;
 
     if ((ret = get_key(&opts, key_val_sep, &key)) < 0 &&
         !(flags & AV_OPT_FLAG_IMPLICIT_KEY))
         return AVERROR(EINVAL);
     if (!(val = av_get_token(&opts, pairs_sep))) {
         av_free(key);
         return AVERROR(ENOMEM);
     }
     *ropts = opts;
     *rkey  = key;
     *rval  = val;
     return 0;
 }
 
438978fb
 int av_opt_set_from_string(void *ctx, const char *opts,
                            const char *const *shorthand,
                            const char *key_val_sep, const char *pairs_sep)
 {
     int ret, count = 0;
     const char *dummy_shorthand = NULL;
3bdf4971
     char *av_uninit(parsed_key), *av_uninit(value);
438978fb
     const char *key;
 
     if (!opts)
         return 0;
     if (!shorthand)
         shorthand = &dummy_shorthand;
 
     while (*opts) {
3bdf4971
         ret = av_opt_get_key_value(&opts, key_val_sep, pairs_sep,
                                    *shorthand ? AV_OPT_FLAG_IMPLICIT_KEY : 0,
                                    &parsed_key, &value);
         if (ret < 0) {
             if (ret == AVERROR(EINVAL))
438978fb
                 av_log(ctx, AV_LOG_ERROR, "No option name near '%s'\n", opts);
3bdf4971
             else
                 av_log(ctx, AV_LOG_ERROR, "Unable to parse '%s': %s\n", opts,
                        av_err2str(ret));
             return ret;
         }
92648107
         if (*opts)
             opts++;
3bdf4971
         if (parsed_key) {
e021eeb9
             key = parsed_key;
438978fb
             while (*shorthand) /* discard all remaining shorthand */
                 shorthand++;
3bdf4971
         } else {
             key = *(shorthand++);
438978fb
         }
 
         av_log(ctx, AV_LOG_DEBUG, "Setting '%s' to value '%s'\n", key, value);
         if ((ret = av_opt_set(ctx, key, value, 0)) < 0) {
             if (ret == AVERROR_OPTION_NOT_FOUND)
                 av_log(ctx, AV_LOG_ERROR, "Option '%s' not found\n", key);
492b8ec4
             av_free(value);
e021eeb9
             av_free(parsed_key);
438978fb
             return ret;
         }
 
         av_free(value);
e021eeb9
         av_free(parsed_key);
438978fb
         count++;
     }
     return count;
 }
 
b39b0623
 void av_opt_free(void *obj)
 {
     const AVOption *o = NULL;
3b3ea346
     while ((o = av_opt_next(obj, o)))
145f741e
         if (o->type == AV_OPT_TYPE_STRING || o->type == AV_OPT_TYPE_BINARY)
b39b0623
             av_freep((uint8_t *)obj + o->offset);
 }
 
7e83e1c5
 int av_opt_set_dict(void *obj, AVDictionary **options)
 {
     AVDictionaryEntry *t = NULL;
     AVDictionary    *tmp = NULL;
     int ret = 0;
 
     while ((t = av_dict_get(*options, "", t, AV_DICT_IGNORE_SUFFIX))) {
3b3ea346
         ret = av_opt_set(obj, t->key, t->value, 0);
7e83e1c5
         if (ret == AVERROR_OPTION_NOT_FOUND)
             av_dict_set(&tmp, t->key, t->value, 0);
         else if (ret < 0) {
             av_log(obj, AV_LOG_ERROR, "Error setting option %s to value %s.\n", t->key, t->value);
             break;
         }
         ret = 0;
     }
     av_dict_free(options);
     *options = tmp;
     return ret;
 }
 
dc59ec5e
 const AVOption *av_opt_find(void *obj, const char *name, const char *unit,
                             int opt_flags, int search_flags)
 {
641c7afe
     return av_opt_find2(obj, name, unit, opt_flags, search_flags, NULL);
 }
 
 const AVOption *av_opt_find2(void *obj, const char *name, const char *unit,
                              int opt_flags, int search_flags, void **target_obj)
 {
d5e1244c
     const AVClass  *c;
dc59ec5e
     const AVOption *o = NULL;
 
d5e1244c
     if(!obj)
         return NULL;
 
     c= *(AVClass**)obj;
 
c7e921a5
     if (!c)
         return NULL;
 
641c7afe
     if (search_flags & AV_OPT_SEARCH_CHILDREN) {
         if (search_flags & AV_OPT_SEARCH_FAKE_OBJ) {
             const AVClass *child = NULL;
             while (child = av_opt_child_class_next(c, child))
                 if (o = av_opt_find2(&child, name, unit, opt_flags, search_flags, NULL))
                     return o;
         } else {
             void *child = NULL;
             while (child = av_opt_child_next(obj, child))
                 if (o = av_opt_find2(child, name, unit, opt_flags, search_flags, target_obj))
                     return o;
         }
     }
dc59ec5e
 
3b3ea346
     while (o = av_opt_next(obj, o)) {
a726d7fd
         if (!strcmp(o->name, name) && (o->flags & opt_flags) == opt_flags &&
145f741e
             ((!unit && o->type != AV_OPT_TYPE_CONST) ||
f884ef00
              (unit  && o->type == AV_OPT_TYPE_CONST && o->unit && !strcmp(o->unit, unit)))) {
641c7afe
             if (target_obj) {
                 if (!(search_flags & AV_OPT_SEARCH_FAKE_OBJ))
                     *target_obj = obj;
                 else
                     *target_obj = NULL;
             }
dc59ec5e
             return o;
641c7afe
         }
dc59ec5e
     }
     return NULL;
 }
 
641c7afe
 void *av_opt_child_next(void *obj, void *prev)
 {
     const AVClass *c = *(AVClass**)obj;
     if (c->child_next)
         return c->child_next(obj, prev);
     return NULL;
 }
 
 const AVClass *av_opt_child_class_next(const AVClass *parent, const AVClass *prev)
 {
     if (parent->child_class_next)
         return parent->child_class_next(prev);
     return NULL;
 }
 
dff97be8
 void *av_opt_ptr(const AVClass *class, void *obj, const char *name)
 {
2d9e2c64
     const AVOption *opt= av_opt_find2(&class, name, NULL, 0, AV_OPT_SEARCH_FAKE_OBJ, NULL);
dff97be8
     if(!opt)
         return NULL;
     return (uint8_t*)obj + opt->offset;
 }
 
0ad654d4
 int av_opt_query_ranges(AVOptionRanges **ranges_arg, void *obj, const char *key, int flags)
 {
a8e0d51b
     const AVClass *c = *(AVClass**)obj;
     int (*callback)(AVOptionRanges **, void *obj, const char *key, int flags) = NULL;
 
0ad654d4
     if (c->version > (52 << 16 | 11 << 8))
a8e0d51b
         callback = c->query_ranges;
 
0ad654d4
     if (!callback)
a8e0d51b
         callback = av_opt_query_ranges_default;
 
     return callback(ranges_arg, obj, key, flags);
 }
 
0ad654d4
 int av_opt_query_ranges_default(AVOptionRanges **ranges_arg, void *obj, const char *key, int flags)
 {
a8e0d51b
     AVOptionRanges *ranges = av_mallocz(sizeof(*ranges));
     AVOptionRange **range_array = av_mallocz(sizeof(void*));
     AVOptionRange *range = av_mallocz(sizeof(*range));
     const AVOption *field = av_opt_find(obj, key, NULL, 0, flags);
129d7371
     int ret;
a8e0d51b
 
     *ranges_arg = NULL;
 
129d7371
     if (!ranges || !range || !range_array || !field) {
         ret = AVERROR(ENOMEM);
a8e0d51b
         goto fail;
129d7371
     }
a8e0d51b
 
     ranges->range = range_array;
     ranges->range[0] = range;
     ranges->nb_ranges = 1;
     range->is_range = 1;
     range->value_min = field->min;
     range->value_max = field->max;
 
0ad654d4
     switch (field->type) {
a8e0d51b
     case AV_OPT_TYPE_INT:
     case AV_OPT_TYPE_INT64:
     case AV_OPT_TYPE_PIXEL_FMT:
     case AV_OPT_TYPE_SAMPLE_FMT:
     case AV_OPT_TYPE_FLOAT:
     case AV_OPT_TYPE_DOUBLE:
8d928a9d
     case AV_OPT_TYPE_DURATION:
3a751eab
     case AV_OPT_TYPE_COLOR:
8696e51b
     case AV_OPT_TYPE_CHANNEL_LAYOUT:
a8e0d51b
         break;
     case AV_OPT_TYPE_STRING:
         range->component_min = 0;
         range->component_max = 0x10FFFF; // max unicode value
         range->value_min = -1;
         range->value_max = INT_MAX;
         break;
     case AV_OPT_TYPE_RATIONAL:
         range->component_min = INT_MIN;
         range->component_max = INT_MAX;
         break;
     case AV_OPT_TYPE_IMAGE_SIZE:
         range->component_min = 0;
         range->component_max = INT_MAX/128/8;
         range->value_min = 0;
         range->value_max = INT_MAX/8;
         break;
7aa9af51
     case AV_OPT_TYPE_VIDEO_RATE:
         range->component_min = 1;
         range->component_max = INT_MAX;
         range->value_min = 1;
         range->value_max = INT_MAX;
         break;
a8e0d51b
     default:
129d7371
         ret = AVERROR(ENOSYS);
a8e0d51b
         goto fail;
     }
 
     *ranges_arg = ranges;
     return 0;
 fail:
     av_free(ranges);
     av_free(range);
22e49886
     av_free(range_array);
129d7371
     return ret;
a8e0d51b
 }
 
0ad654d4
 void av_opt_freep_ranges(AVOptionRanges **rangesp)
 {
a8e0d51b
     int i;
     AVOptionRanges *ranges = *rangesp;
 
0ad654d4
     for (i = 0; i < ranges->nb_ranges; i++) {
a8e0d51b
         AVOptionRange *range = ranges->range[i];
         av_freep(&range->str);
         av_freep(&ranges->range[i]);
     }
     av_freep(&ranges->range);
     av_freep(rangesp);
 }
 
c85eef4e
 #ifdef TEST
 
 typedef struct TestContext
 {
     const AVClass *class;
     int num;
     int toggle;
     char *string;
     int flags;
     AVRational rational;
eaa5882e
     AVRational video_rate;
9148ae5b
     int w, h;
ac627b3d
     enum AVPixelFormat pix_fmt;
481fdeee
     enum AVSampleFormat sample_fmt;
8d928a9d
     int64_t duration;
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     uint8_t color[4];
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     int64_t channel_layout;
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 } TestContext;
 
 #define OFFSET(x) offsetof(TestContext, x)
 
 #define TEST_FLAG_COOL 01
 #define TEST_FLAG_LAME 02
 #define TEST_FLAG_MU   04
 
 static const AVOption test_options[]= {
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 {"num",      "set num",        OFFSET(num),      AV_OPT_TYPE_INT,      {.i64 = 0},       0,        100                 },
 {"toggle",   "set toggle",     OFFSET(toggle),   AV_OPT_TYPE_INT,      {.i64 = 0},       0,        1                   },
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 {"rational", "set rational",   OFFSET(rational), AV_OPT_TYPE_RATIONAL, {.dbl = 0},       0,        10                  },
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 {"string",   "set string",     OFFSET(string),   AV_OPT_TYPE_STRING,   {.str = "default"}, CHAR_MIN, CHAR_MAX          },
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 {"flags",    "set flags",      OFFSET(flags),    AV_OPT_TYPE_FLAGS,    {.i64 = 0},       0,        INT_MAX, 0, "flags" },
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 {"cool",     "set cool flag ", 0,                AV_OPT_TYPE_CONST,    {.i64 = TEST_FLAG_COOL}, INT_MIN,  INT_MAX, 0, "flags" },
 {"lame",     "set lame flag ", 0,                AV_OPT_TYPE_CONST,    {.i64 = TEST_FLAG_LAME}, INT_MIN,  INT_MAX, 0, "flags" },
 {"mu",       "set mu flag ",   0,                AV_OPT_TYPE_CONST,    {.i64 = TEST_FLAG_MU},   INT_MIN,  INT_MAX, 0, "flags" },
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 {"size",     "set size",       OFFSET(w),        AV_OPT_TYPE_IMAGE_SIZE,{0},             0,        0                   },
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 {"pix_fmt",  "set pixfmt",     OFFSET(pix_fmt),  AV_OPT_TYPE_PIXEL_FMT, {.i64 = AV_PIX_FMT_NONE}, -1, INT_MAX},
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 {"sample_fmt", "set samplefmt", OFFSET(sample_fmt), AV_OPT_TYPE_SAMPLE_FMT, {.i64 = AV_SAMPLE_FMT_NONE}, -1, INT_MAX},
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 {"video_rate", "set videorate", OFFSET(video_rate), AV_OPT_TYPE_VIDEO_RATE,  {.str = "25"}, 0,     0                   },
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 {"duration", "set duration",   OFFSET(duration), AV_OPT_TYPE_DURATION, {.i64 = 0}, 0, INT64_MAX},
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 {"color", "set color",   OFFSET(color), AV_OPT_TYPE_COLOR, {.str = "pink"}, 0, 0},
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 {"cl", "set channel layout", OFFSET(channel_layout), AV_OPT_TYPE_CHANNEL_LAYOUT, {.i64 = AV_CH_LAYOUT_HEXAGONAL}, 0, INT64_MAX},
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 {NULL},
 };
 
 static const char *test_get_name(void *ctx)
 {
     return "test";
 }
 
 static const AVClass test_class = {
     "TestContext",
     test_get_name,
     test_options
 };
 
 int main(void)
 {
     int i;
 
     printf("\nTesting av_set_options_string()\n");
     {
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         TestContext test_ctx = { 0 };
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         static const char * const options[] = {
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             "",
             ":",
             "=",
             "foo=:",
             ":=foo",
             "=foo",
             "foo=",
             "foo",
             "foo=val",
             "foo==val",
             "toggle=:",
             "string=:",
             "toggle=1 : foo",
             "toggle=100",
             "toggle==1",
             "flags=+mu-lame : num=42: toggle=0",
             "num=42 : string=blahblah",
             "rational=0 : rational=1/2 : rational=1/-1",
             "rational=-1/0",
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             "size=1024x768",
             "size=pal",
             "size=bogus",
             "pix_fmt=yuv420p",
             "pix_fmt=2",
             "pix_fmt=bogus",
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             "sample_fmt=s16",
             "sample_fmt=2",
             "sample_fmt=bogus",
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             "video_rate=pal",
             "video_rate=25",
             "video_rate=30000/1001",
             "video_rate=30/1.001",
             "video_rate=bogus",
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             "duration=bogus",
             "duration=123.45",
             "duration=1\\:23\\:45.67",
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             "color=blue",
             "color=0x223300",
             "color=0x42FF07AA",
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             "cl=stereo+downmix",
             "cl=foo",
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         };
 
         test_ctx.class = &test_class;
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         av_opt_set_defaults(&test_ctx);
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         av_log_set_level(AV_LOG_DEBUG);
 
         for (i=0; i < FF_ARRAY_ELEMS(options); i++) {
             av_log(&test_ctx, AV_LOG_DEBUG, "Setting options string '%s'\n", options[i]);
             if (av_set_options_string(&test_ctx, options[i], "=", ":") < 0)
                 av_log(&test_ctx, AV_LOG_ERROR, "Error setting options string: '%s'\n", options[i]);
             printf("\n");
         }
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         av_opt_free(&test_ctx);
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     }
 
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     printf("\nTesting av_opt_set_from_string()\n");
     {
         TestContext test_ctx = { 0 };
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         static const char * const options[] = {
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             "",
             "5",
             "5:hello",
             "5:hello:size=pal",
             "5:size=pal:hello",
             ":",
             "=",
             " 5 : hello : size = pal ",
             "a_very_long_option_name_that_will_need_to_be_ellipsized_around_here=42"
         };
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         static const char * const shorthand[] = { "num", "string", NULL };
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         test_ctx.class = &test_class;
         av_opt_set_defaults(&test_ctx);
 
         av_log_set_level(AV_LOG_DEBUG);
 
         for (i=0; i < FF_ARRAY_ELEMS(options); i++) {
             av_log(&test_ctx, AV_LOG_DEBUG, "Setting options string '%s'\n", options[i]);
             if (av_opt_set_from_string(&test_ctx, options[i], shorthand, "=", ":") < 0)
                 av_log(&test_ctx, AV_LOG_ERROR, "Error setting options string: '%s'\n", options[i]);
             printf("\n");
         }
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         av_opt_free(&test_ctx);
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     }
 
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     return 0;
 }
 
 #endif