libavutil/opt.c
6ed04040
 /*
  * 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"
47ea04ff
 #include "avassert.h"
c85eef4e
 #include "avstring.h"
8696e51b
 #include "channel_layout.h"
1d9c2dc8
 #include "common.h"
7e83e1c5
 #include "dict.h"
3b08d9d9
 #include "eval.h"
abc78a5a
 #include "log.h"
2ec3e576
 #include "parseutils.h"
d9b0d75c
 #include "pixdesc.h"
3893feec
 #include "mathematics.h"
3b08d9d9
 #include "opt.h"
481fdeee
 #include "samplefmt.h"
bee5844d
 #include "bprint.h"
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f4ceca62
 #include <float.h>
 
545559e4
 const AVOption *av_opt_next(const void *obj, const AVOption *last)
8c5dcaad
 {
ea0d8938
     const AVClass *class;
     if (!obj)
         return NULL;
     class = *(const AVClass**)obj;
f98dbc73
     if (!last && class && class->option && class->option[0].name)
a6d6b8a2
         return class->option;
d02202e0
     if (last && last[1].name)
         return ++last;
e1e22851
     return NULL;
6ed04040
 }
 
f00e9c4b
 static int read_number(const AVOption *o, const void *dst, double *num, int *den, int64_t *intnum)
059a037f
 {
     switch (o->type) {
3b08d9d9
     case AV_OPT_TYPE_FLAGS:
5f587b1d
         *intnum = *(unsigned int*)dst;
         return 0;
     case AV_OPT_TYPE_PIXEL_FMT:
         *intnum = *(enum AVPixelFormat *)dst;
         return 0;
     case AV_OPT_TYPE_SAMPLE_FMT:
         *intnum = *(enum AVSampleFormat *)dst;
3b08d9d9
         return 0;
9117748c
     case AV_OPT_TYPE_BOOL:
3b08d9d9
     case AV_OPT_TYPE_INT:
         *intnum = *(int *)dst;
         return 0;
8696e51b
     case AV_OPT_TYPE_CHANNEL_LAYOUT:
8d928a9d
     case AV_OPT_TYPE_DURATION:
3b08d9d9
     case AV_OPT_TYPE_INT64:
2f935baa
     case AV_OPT_TYPE_UINT64:
3b08d9d9
         *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;
         *den    = ((AVRational *)dst)->den;
         return 0;
5f587b1d
     case AV_OPT_TYPE_CONST:
         *num = o->default_val.dbl;
         return 0;
059a037f
     }
     return AVERROR(EINVAL);
 }
 
7bb1807c
 static int write_number(void *obj, const AVOption *o, void *dst, double num, int den, int64_t intnum)
8f1afd3b
 {
0b357a80
     if (o->type != AV_OPT_TYPE_FLAGS &&
3ab8436f
         (!den || o->max * den < num * intnum || o->min * den > num * intnum)) {
cd01b3cb
         num = den ? num * intnum / den : (num && intnum ? INFINITY : NAN);
ef4dc3e5
         av_log(obj, AV_LOG_ERROR, "Value %f for parameter '%s' out of range [%g - %g]\n",
52835cb8
                num, o->name, o->min, o->max);
6ed04040
         return AVERROR(ERANGE);
     }
162126bb
     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);
         }
     }
6ed04040
 
8f1afd3b
     switch (o->type) {
5f587b1d
     case AV_OPT_TYPE_PIXEL_FMT:
         *(enum AVPixelFormat *)dst = llrint(num / den) * intnum;
         break;
     case AV_OPT_TYPE_SAMPLE_FMT:
         *(enum AVSampleFormat *)dst = llrint(num / den) * intnum;
         break;
9117748c
     case AV_OPT_TYPE_BOOL:
145f741e
     case AV_OPT_TYPE_FLAGS:
3b08d9d9
     case AV_OPT_TYPE_INT:
         *(int *)dst = llrint(num / den) * intnum;
         break;
8d928a9d
     case AV_OPT_TYPE_DURATION:
8696e51b
     case AV_OPT_TYPE_CHANNEL_LAYOUT:
748ce9d7
     case AV_OPT_TYPE_INT64:{
         double d = num / den;
         if (intnum == 1 && d == (double)INT64_MAX) {
             *(int64_t *)dst = INT64_MAX;
         } else
             *(int64_t *)dst = llrint(d) * intnum;
         break;}
2f935baa
     case AV_OPT_TYPE_UINT64:{
         double d = num / den;
         // We must special case uint64_t here as llrint() does not support values
         // outside the int64_t range and there is no portable function which does
         // "INT64_MAX + 1ULL" is used as it is representable exactly as IEEE double
         // while INT64_MAX is not
         if (intnum == 1 && d == (double)UINT64_MAX) {
             *(uint64_t *)dst = UINT64_MAX;
         } else if (d > INT64_MAX + 1ULL) {
             *(uint64_t *)dst = (llrint(d - (INT64_MAX + 1ULL)) + (INT64_MAX + 1ULL))*intnum;
         } else {
             *(uint64_t *)dst = llrint(d) * intnum;
         }
         break;}
3b08d9d9
     case AV_OPT_TYPE_FLOAT:
         *(float *)dst = num * intnum / den;
         break;
     case AV_OPT_TYPE_DOUBLE:
5f587b1d
         *(double    *)dst = num * intnum / den;
3b08d9d9
         break;
145f741e
     case AV_OPT_TYPE_RATIONAL:
1a3cff4f
     case AV_OPT_TYPE_VIDEO_RATE:
3b08d9d9
         if ((int) num == num)
             *(AVRational *)dst = (AVRational) { num *intnum, den };
         else
             *(AVRational *)dst = av_d2q(num * intnum / den, 1 << 24);
6ed04040
         break;
     default:
         return AVERROR(EINVAL);
     }
     return 0;
 }
 
 static int hexchar2int(char c) {
3b08d9d9
     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;
6ed04040
     return -1;
 }
 
c8d787d2
 static int set_string_binary(void *obj, const AVOption *o, const char *val, uint8_t **dst)
8f1afd3b
 {
c8d787d2
     int *lendst = (int *)(dst + 1);
     uint8_t *bin, *ptr;
bb60142f
     int len;
c8d787d2
 
     av_freep(dst);
     *lendst = 0;
 
bb60142f
     if (!val || !(len = strlen(val)))
         return 0;
 
c8d787d2
     if (len & 1)
6ed04040
         return AVERROR(EINVAL);
c8d787d2
     len /= 2;
6ed04040
 
c8d787d2
     ptr = bin = av_malloc(len);
07a0c0f0
     if (!ptr)
         return AVERROR(ENOMEM);
c8d787d2
     while (*val) {
         int a = hexchar2int(*val++);
         int b = hexchar2int(*val++);
         if (a < 0 || b < 0) {
             av_free(bin);
             return AVERROR(EINVAL);
6ed04040
         }
c8d787d2
         *ptr++ = (a << 4) | b;
6ed04040
     }
3b08d9d9
     *dst    = bin;
c8d787d2
     *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);
b1306823
     return *dst ? 0 : AVERROR(ENOMEM);
c8d787d2
 }
 
124134e4
 #define DEFAULT_NUMVAL(opt) ((opt->type == AV_OPT_TYPE_INT64 || \
2f935baa
                               opt->type == AV_OPT_TYPE_UINT64 || \
d58dd4b5
                               opt->type == AV_OPT_TYPE_CONST || \
e6153f17
                               opt->type == AV_OPT_TYPE_FLAGS || \
3b08d9d9
                               opt->type == AV_OPT_TYPE_INT)     \
                              ? opt->default_val.i64             \
                              : opt->default_val.dbl)
4d7adec8
 
4d67ff8e
 static int set_string_number(void *obj, void *target_obj, const AVOption *o, const char *val, void *dst)
c8d787d2
 {
2c5c7f10
     int ret = 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;
     }
 
c8d787d2
     for (;;) {
4852a88d
         int i = 0;
c8d787d2
         char buf[256];
         int cmd = 0;
4852a88d
         double d;
059a037f
         int64_t intnum = 1;
c8d787d2
 
4852a88d
         if (o->type == AV_OPT_TYPE_FLAGS) {
             if (*val == '+' || *val == '-')
9d5c62ba
                 cmd = *(val++);
4852a88d
             for (; i < sizeof(buf) - 1 && val[i] && val[i] != '+' && val[i] != '-'; i++)
                 buf[i] = val[i];
             buf[i] = 0;
9d5c62ba
         }
c8d787d2
 
         {
24327706
             const AVOption *o_named = av_opt_find(target_obj, i ? buf : val, o->unit, 0, 0);
265dadbe
             int res;
             int ci = 0;
             double const_values[64];
             const char * const_names[64];
bbc5adfb
             if (o_named && o_named->type == AV_OPT_TYPE_CONST)
                 d = DEFAULT_NUMVAL(o_named);
             else {
                 if (o->unit) {
                     for (o_named = NULL; o_named = av_opt_next(target_obj, o_named); ) {
                         if (o_named->type == AV_OPT_TYPE_CONST &&
                             o_named->unit &&
                             !strcmp(o_named->unit, o->unit)) {
                             if (ci + 6 >= FF_ARRAY_ELEMS(const_values)) {
                                 av_log(obj, AV_LOG_ERROR, "const_values array too small for %s\n", o->unit);
                                 return AVERROR_PATCHWELCOME;
                             }
                             const_names [ci  ] = o_named->name;
                             const_values[ci++] = DEFAULT_NUMVAL(o_named);
265dadbe
                         }
                     }
6ed04040
                 }
bbc5adfb
                 const_names [ci  ] = "default";
                 const_values[ci++] = DEFAULT_NUMVAL(o);
                 const_names [ci  ] = "max";
                 const_values[ci++] = o->max;
                 const_names [ci  ] = "min";
                 const_values[ci++] = o->min;
                 const_names [ci  ] = "none";
                 const_values[ci++] = 0;
                 const_names [ci  ] = "all";
                 const_values[ci++] = ~0;
                 const_names [ci] = NULL;
                 const_values[ci] = 0;
 
                 res = av_expr_parse_and_eval(&d, i ? buf : val, 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;
                 }
265dadbe
             }
6ed04040
         }
145f741e
         if (o->type == AV_OPT_TYPE_FLAGS) {
059a037f
             read_number(o, dst, NULL, NULL, &intnum);
3b08d9d9
             if (cmd == '+')
                 d = intnum | (int64_t)d;
             else if (cmd == '-')
5f587b1d
                 d = intnum &~(int64_t)d;
c8d787d2
         }
6ed04040
 
7bb1807c
         if ((ret = write_number(obj, o, dst, d, 1, 1)) < 0)
c8d787d2
             return ret;
         val += i;
539e7272
         if (!i || !*val)
c8d787d2
             return 0;
6ed04040
     }
 }
 
9648c4fe
 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;
 }
 
9117748c
 static const char *get_bool_name(int val)
 {
     if (val < 0)
         return "auto";
     return val ? "true" : "false";
 }
 
 static int set_string_bool(void *obj, const AVOption *o, const char *val, int *dst)
 {
     int n;
 
     if (!val)
         return 0;
 
     if (!strcmp(val, "auto")) {
         n = -1;
     } else if (av_match_name(val, "true,y,yes,enable,enabled,on")) {
         n = 1;
     } else if (av_match_name(val, "false,n,no,disable,disabled,off")) {
         n = 0;
     } else {
         char *end = NULL;
         n = strtol(val, &end, 10);
         if (val + strlen(val) != end)
             goto fail;
     }
 
     if (n < o->min || n > o->max)
         goto fail;
 
     *dst = n;
     return 0;
 
 fail:
     av_log(obj, AV_LOG_ERROR, "Unable to parse option value \"%s\" as boolean\n", val);
     return AVERROR(EINVAL);
 }
 
1575a96b
 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
 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 &&
9117748c
                  o->type != AV_OPT_TYPE_CHANNEL_LAYOUT && o->type != AV_OPT_TYPE_BOOL))
6ed04040
         return AVERROR(EINVAL);
 
6a24d779
     if (o->flags & AV_OPT_FLAG_READONLY)
c8d787d2
         return AVERROR(EINVAL);
 
3b08d9d9
     dst = ((uint8_t *)target_obj) + o->offset;
c8d787d2
     switch (o->type) {
5f587b1d
     case AV_OPT_TYPE_BOOL:
         return set_string_bool(obj, o, val, dst);
3b08d9d9
     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);
145f741e
     case AV_OPT_TYPE_FLAGS:
     case AV_OPT_TYPE_INT:
     case AV_OPT_TYPE_INT64:
2f935baa
     case AV_OPT_TYPE_UINT64:
145f741e
     case AV_OPT_TYPE_FLOAT:
     case AV_OPT_TYPE_DOUBLE:
3b08d9d9
     case AV_OPT_TYPE_RATIONAL:
         return set_string_number(obj, target_obj, o, val, dst);
5f587b1d
     case AV_OPT_TYPE_IMAGE_SIZE:
         return set_string_image_size(obj, o, val, dst);
37bb6004
     case AV_OPT_TYPE_VIDEO_RATE: {
         AVRational tmp;
         ret = set_string_video_rate(obj, o, val, &tmp);
         if (ret < 0)
             return ret;
         return write_number(obj, o, dst, 1, tmp.den, tmp.num);
     }
5f587b1d
     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;
5f587b1d
     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 {
             int64_t cl = av_get_channel_layout(val);
             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;
6ed04040
     }
 
c8d787d2
     av_log(obj, AV_LOG_ERROR, "Invalid option type.\n");
     return AVERROR(EINVAL);
 }
6ed04040
 
3b08d9d9
 #define OPT_EVAL_NUMBER(name, opttype, vartype)                         \
 int av_opt_eval_ ## name(void *obj, const AVOption *o,                  \
                          const char *val, vartype *name ## _out)        \
 {                                                                       \
     if (!o || o->type != opttype || o->flags & AV_OPT_FLAG_READONLY)    \
         return AVERROR(EINVAL);                                         \
     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,
3b08d9d9
                       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);
 
3b08d9d9
     dst = ((uint8_t *)target_obj) + o->offset;
dac66da6
     return write_number(obj, o, dst, num, den, intnum);
6ed04040
 }
 
dac66da6
 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);
 
3b08d9d9
     dst    = (uint8_t **)(((uint8_t *)target_obj) + o->offset);
154486f9
     lendst = (int *)(dst + 1);
 
     av_free(*dst);
3b08d9d9
     *dst    = ptr;
154486f9
     *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;
 
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);
     }
 
8b6cbc3c
     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);
     }
857fc0a7
     *(int64_t *)(((uint8_t *)target_obj) + o->offset) = cl;
8696e51b
     return 0;
 }
 
3b08d9d9
 int av_opt_set_dict_val(void *obj, const char *name, const AVDictionary *val,
                         int search_flags)
a8c104a5
 {
     void *target_obj;
     AVDictionary **dst;
     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->flags & AV_OPT_FLAG_READONLY)
         return AVERROR(EINVAL);
 
     dst = (AVDictionary **)(((uint8_t *)target_obj) + o->offset);
     av_dict_free(dst);
     av_dict_copy(dst, val, 0);
 
     return 0;
 }
 
47ea04ff
 static void format_duration(char *buf, size_t size, int64_t d)
 {
     char *e;
 
     av_assert0(size >= 25);
     if (d < 0 && d != INT64_MIN) {
         *(buf++) = '-';
         size--;
         d = -d;
     }
     if (d == INT64_MAX)
         snprintf(buf, size, "INT64_MAX");
     else if (d == INT64_MIN)
         snprintf(buf, size, "INT64_MIN");
     else if (d > (int64_t)3600*1000000)
         snprintf(buf, size, "%"PRId64":%02d:%02d.%06d", d / 3600000000,
                  (int)((d / 60000000) % 60),
                  (int)((d / 1000000) % 60),
                  (int)(d % 1000000));
     else if (d > 60*1000000)
         snprintf(buf, size, "%d:%02d.%06d",
                  (int)(d / 60000000),
                  (int)((d / 1000000) % 60),
                  (int)(d % 1000000));
     else
         snprintf(buf, size, "%d.%06d",
                  (int)(d / 1000000),
                  (int)(d % 1000000));
     e = buf + strlen(buf);
     while (e > buf && e[-1] == '0')
         *(--e) = 0;
     if (e > buf && e[-1] == '.')
         *(--e) = 0;
 }
 
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
 
3b08d9d9
     dst = (uint8_t *)target_obj + o->offset;
6ed04040
 
41d9d51a
     buf[0] = 0;
8f1afd3b
     switch (o->type) {
9117748c
     case AV_OPT_TYPE_BOOL:
         ret = snprintf(buf, sizeof(buf), "%s", (char *)av_x_if_null(get_bool_name(*(int *)dst), "invalid"));
         break;
3b08d9d9
     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:
5f587b1d
         ret = snprintf(buf, sizeof(buf), "%"PRId64, *(int64_t *)dst);
3b08d9d9
         break;
2f935baa
     case AV_OPT_TYPE_UINT64:
         ret = snprintf(buf, sizeof(buf), "%"PRIu64, *(uint64_t *)dst);
         break;
3b08d9d9
     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:
3b08d9d9
     case AV_OPT_TYPE_RATIONAL:
5f587b1d
         ret = snprintf(buf, sizeof(buf), "%d/%d", ((AVRational *)dst)->num, ((AVRational *)dst)->den);
         break;
     case AV_OPT_TYPE_CONST:
         ret = snprintf(buf, sizeof(buf), "%f", o->default_val.dbl);
3b08d9d9
         break;
145f741e
     case AV_OPT_TYPE_STRING:
5f587b1d
         if (*(uint8_t **)dst) {
3b08d9d9
             *out_val = av_strdup(*(uint8_t **)dst);
0562f959
         } else if (search_flags & AV_OPT_ALLOW_NULL) {
             *out_val = NULL;
             return 0;
         } else {
41d9d51a
             *out_val = av_strdup("");
0562f959
         }
b1306823
         return *out_val ? 0 : AVERROR(ENOMEM);
145f741e
     case AV_OPT_TYPE_BINARY:
5f587b1d
         if (!*(uint8_t **)dst && (search_flags & AV_OPT_ALLOW_NULL)) {
0562f959
             *out_val = NULL;
             return 0;
         }
3b08d9d9
         len = *(int *)(((uint8_t *)dst) + sizeof(uint8_t *));
         if ((uint64_t)len * 2 + 1 > INT_MAX)
41d9d51a
             return AVERROR(EINVAL);
3b08d9d9
         if (!(*out_val = av_malloc(len * 2 + 1)))
41d9d51a
             return AVERROR(ENOMEM);
173d51c9
         if (!len) {
             *out_val[0] = '\0';
             return 0;
         }
3b08d9d9
         bin = *(uint8_t **)dst;
41d9d51a
         for (i = 0; i < len; i++)
3b08d9d9
             snprintf(*out_val + i * 2, 3, "%02X", bin[i]);
41d9d51a
         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;
47ea04ff
         format_duration(buf, sizeof(buf), i64);
         ret = strlen(buf); // no overflow possible, checked by an assert
8d928a9d
         break;
3a751eab
     case AV_OPT_TYPE_COLOR:
173d51c9
         ret = snprintf(buf, sizeof(buf), "0x%02x%02x%02x%02x",
                        (int)((uint8_t *)dst)[0], (int)((uint8_t *)dst)[1],
                        (int)((uint8_t *)dst)[2], (int)((uint8_t *)dst)[3]);
3a751eab
         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);
b1306823
     return *out_val ? 0 : AVERROR(ENOMEM);
41d9d51a
 }
 
 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;
 
3b08d9d9
     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:
3b08d9d9
     *den    =
     *intnum = 0;
6ed04040
     return -1;
 }
 
41d9d51a
 int av_opt_get_int(void *obj, const char *name, int search_flags, int64_t *out_val)
 {
     int64_t intnum = 1;
3b08d9d9
     double num = 1;
     int ret, den = 1;
41d9d51a
 
     if ((ret = get_number(obj, name, NULL, &num, &den, &intnum, search_flags)) < 0)
         return ret;
3b08d9d9
     *out_val = num * intnum / den;
41d9d51a
     return 0;
 }
 
 int av_opt_get_double(void *obj, const char *name, int search_flags, double *out_val)
 {
     int64_t intnum = 1;
3b08d9d9
     double num = 1;
     int ret, den = 1;
41d9d51a
 
     if ((ret = get_number(obj, name, NULL, &num, &den, &intnum, search_flags)) < 0)
         return ret;
3b08d9d9
     *out_val = num * intnum / den;
41d9d51a
     return 0;
 }
 
 int av_opt_get_q(void *obj, const char *name, int search_flags, AVRational *out_val)
 {
     int64_t intnum = 1;
3b08d9d9
     double num = 1;
     int ret, den = 1;
41d9d51a
 
     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)
3b08d9d9
         *out_val = (AVRational) { intnum, den };
7aa9af51
     else
3b08d9d9
         *out_val = av_d2q(num * intnum / den, 1 << 24);
7aa9af51
     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;
 }
 
a8c104a5
 int av_opt_get_dict_val(void *obj, const char *name, int search_flags, AVDictionary **out_val)
 {
     void *target_obj;
     AVDictionary *src;
     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_DICT)
         return AVERROR(EINVAL);
 
     src = *(AVDictionary **)(((uint8_t *)target_obj) + o->offset);
     av_dict_copy(out_val, src, 0);
 
     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
     }
 }
 
ce0a117e
 static const char *get_opt_const_name(void *obj, const char *unit, int64_t value)
 {
     const AVOption *opt = NULL;
 
     if (!unit)
         return NULL;
     while ((opt = av_opt_next(obj, opt)))
         if (opt->type == AV_OPT_TYPE_CONST && !strcmp(opt->unit, unit) &&
             opt->default_val.i64 == value)
             return opt->name;
     return NULL;
 }
 
6b5412cb
 static char *get_opt_flags_string(void *obj, const char *unit, int64_t value)
 {
     const AVOption *opt = NULL;
     char flags[512];
 
     flags[0] = 0;
     if (!unit)
         return NULL;
     while ((opt = av_opt_next(obj, opt))) {
         if (opt->type == AV_OPT_TYPE_CONST && !strcmp(opt->unit, unit) &&
             opt->default_val.i64 & value) {
             if (flags[0])
                 av_strlcatf(flags, sizeof(flags), "+");
             av_strlcatf(flags, sizeof(flags), "%s", opt->name);
         }
     }
     if (flags[0])
         return av_strdup(flags);
     return NULL;
 }
 
6ed04040
 static void opt_list(void *obj, void *av_log_obj, const char *unit,
                      int req_flags, int rej_flags)
 {
3b08d9d9
     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.
          */
3b08d9d9
         if (!unit && opt->type == AV_OPT_TYPE_CONST)
6ed04040
             continue;
3b08d9d9
         else if (unit && opt->type != AV_OPT_TYPE_CONST)
6ed04040
             continue;
3b08d9d9
         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;
2f935baa
             case AV_OPT_TYPE_UINT64:
                 av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<uint64>");
                 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;
9117748c
             case AV_OPT_TYPE_BOOL:
                 av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<boolean>");
                 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:
2f935baa
             case AV_OPT_TYPE_UINT64:
f4ceca62
             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) {
9117748c
             case AV_OPT_TYPE_BOOL:
                 av_log(av_log_obj, AV_LOG_INFO, "%s", (char *)av_x_if_null(get_bool_name(opt->default_val.i64), "invalid"));
                 break;
6b5412cb
             case AV_OPT_TYPE_FLAGS: {
                 char *def_flags = get_opt_flags_string(obj, opt->unit, opt->default_val.i64);
                 if (def_flags) {
                     av_log(av_log_obj, AV_LOG_INFO, "%s", def_flags);
                     av_freep(&def_flags);
                 } else {
                     av_log(av_log_obj, AV_LOG_INFO, "%"PRIX64, opt->default_val.i64);
                 }
a64248d1
                 break;
6b5412cb
             }
47ea04ff
             case AV_OPT_TYPE_DURATION: {
                 char buf[25];
                 format_duration(buf, sizeof(buf), opt->default_val.i64);
                 av_log(av_log_obj, AV_LOG_INFO, "%s", buf);
a64248d1
                 break;
47ea04ff
             }
ce0a117e
             case AV_OPT_TYPE_INT:
2f935baa
             case AV_OPT_TYPE_UINT64:
ce0a117e
             case AV_OPT_TYPE_INT64: {
                 const char *def_const = get_opt_const_name(obj, opt->unit, opt->default_val.i64);
                 if (def_const)
                     av_log(av_log_obj, AV_LOG_INFO, "%s", def_const);
                 else
                     log_value(av_log_obj, AV_LOG_INFO, opt->default_val.i64);
                 break;
             }
a64248d1
             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");
3b08d9d9
         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;
 
3b08d9d9
     av_log(av_log_obj, AV_LOG_INFO, "%s AVOptions:\n", (*(AVClass **)obj)->class_name);
6ed04040
 
     opt_list(obj, av_log_obj, NULL, req_flags, rej_flags);
 
     return 0;
 }
 
79eff913
 void av_opt_set_defaults(void *s)
 {
     av_opt_set_defaults2(s, 0, 0);
 }
 
6ed04040
 void av_opt_set_defaults2(void *s, int mask, int flags)
 {
     const AVOption *opt = NULL;
4b1f5e50
     while ((opt = av_opt_next(s, opt))) {
e8ac905d
         void *dst = ((uint8_t*)s) + opt->offset;
32850053
 
8f1afd3b
         if ((opt->flags & mask) != flags)
6ed04040
             continue;
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 */
5f587b1d
                 break;
9117748c
             case AV_OPT_TYPE_BOOL:
d58dd4b5
             case AV_OPT_TYPE_FLAGS:
e6153f17
             case AV_OPT_TYPE_INT:
145f741e
             case AV_OPT_TYPE_INT64:
2f935baa
             case AV_OPT_TYPE_UINT64:
8d928a9d
             case AV_OPT_TYPE_DURATION:
8696e51b
             case AV_OPT_TYPE_CHANNEL_LAYOUT:
9571a560
             case AV_OPT_TYPE_PIXEL_FMT:
             case AV_OPT_TYPE_SAMPLE_FMT:
e8ac905d
                 write_number(s, opt, dst, 1, 1, opt->default_val.i64);
9571a560
                 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;
145f741e
             case AV_OPT_TYPE_BINARY:
4efc7964
                 set_string_binary(s, opt, opt->default_val.str, dst);
                 break;
a8c104a5
             case AV_OPT_TYPE_DICT:
                 /* Cannot set defaults for these types */
6ed04040
             break;
3b08d9d9
         default:
             av_log(s, AV_LOG_DEBUG, "AVOption type %d of option %s not implemented yet\n",
                    opt->type, opt->name);
6ed04040
         }
     }
 }
 
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;
 }
 
83065939
 #define WHITESPACES " \n\t\r"
438978fb
 
 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;
a8c104a5
     while ((o = av_opt_next(obj, o))) {
         switch (o->type) {
         case AV_OPT_TYPE_STRING:
         case AV_OPT_TYPE_BINARY:
b39b0623
             av_freep((uint8_t *)obj + o->offset);
a8c104a5
             break;
 
         case AV_OPT_TYPE_DICT:
             av_dict_free((AVDictionary **)(((uint8_t *)obj) + o->offset));
             break;
 
         default:
             break;
         }
     }
b39b0623
 }
 
ba52fb11
 int av_opt_set_dict2(void *obj, AVDictionary **options, int search_flags)
7e83e1c5
 {
     AVDictionaryEntry *t = NULL;
     AVDictionary    *tmp = NULL;
     int ret = 0;
 
d9a3501c
     if (!options)
         return 0;
 
7e83e1c5
     while ((t = av_dict_get(*options, "", t, AV_DICT_IGNORE_SUFFIX))) {
ba52fb11
         ret = av_opt_set(obj, t->key, t->value, search_flags);
7e83e1c5
         if (ret == AVERROR_OPTION_NOT_FOUND)
f3ace85d
             ret = av_dict_set(&tmp, t->key, t->value, 0);
         if (ret < 0) {
7e83e1c5
             av_log(obj, AV_LOG_ERROR, "Error setting option %s to value %s.\n", t->key, t->value);
f3ace85d
             av_dict_free(&tmp);
             return ret;
7e83e1c5
         }
         ret = 0;
     }
     av_dict_free(options);
     *options = tmp;
     return ret;
 }
 
ba52fb11
 int av_opt_set_dict(void *obj, AVDictionary **options)
 {
     return av_opt_set_dict2(obj, options, 0);
 }
 
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)
 {
3b08d9d9
     const AVClass *c = *(AVClass **)obj;
641c7afe
     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;
 }
 
f028b7af
 static int opt_size(enum AVOptionType type)
 {
     switch(type) {
9117748c
     case AV_OPT_TYPE_BOOL:
f028b7af
     case AV_OPT_TYPE_INT:
3b08d9d9
     case AV_OPT_TYPE_FLAGS:
         return sizeof(int);
f028b7af
     case AV_OPT_TYPE_DURATION:
     case AV_OPT_TYPE_CHANNEL_LAYOUT:
3b08d9d9
     case AV_OPT_TYPE_INT64:
2f935baa
     case AV_OPT_TYPE_UINT64:
3b08d9d9
         return sizeof(int64_t);
     case AV_OPT_TYPE_DOUBLE:
         return sizeof(double);
     case AV_OPT_TYPE_FLOAT:
         return sizeof(float);
     case AV_OPT_TYPE_STRING:
5f587b1d
         return sizeof(uint8_t*);
f028b7af
     case AV_OPT_TYPE_VIDEO_RATE:
3b08d9d9
     case AV_OPT_TYPE_RATIONAL:
         return sizeof(AVRational);
     case AV_OPT_TYPE_BINARY:
5f587b1d
         return sizeof(uint8_t*) + sizeof(int);
     case AV_OPT_TYPE_IMAGE_SIZE:
         return sizeof(int[2]);
     case AV_OPT_TYPE_PIXEL_FMT:
         return sizeof(enum AVPixelFormat);
     case AV_OPT_TYPE_SAMPLE_FMT:
         return sizeof(enum AVSampleFormat);
     case AV_OPT_TYPE_COLOR:
         return 4;
f028b7af
     }
564b4591
     return AVERROR(EINVAL);
f028b7af
 }
 
545559e4
 int av_opt_copy(void *dst, const void *src)
00759d71
 {
     const AVOption *o = NULL;
     const AVClass *c;
     int ret = 0;
 
     if (!src)
564b4591
         return AVERROR(EINVAL);
00759d71
 
3b08d9d9
     c = *(AVClass **)src;
     if (!c || c != *(AVClass **)dst)
00759d71
         return AVERROR(EINVAL);
 
     while ((o = av_opt_next(src, o))) {
3b08d9d9
         void *field_dst = (uint8_t *)dst + o->offset;
         void *field_src = (uint8_t *)src + o->offset;
         uint8_t **field_dst8 = (uint8_t **)field_dst;
         uint8_t **field_src8 = (uint8_t **)field_src;
00759d71
 
         if (o->type == AV_OPT_TYPE_STRING) {
7cd6d61d
             if (*field_dst8 != *field_src8)
                 av_freep(field_dst8);
             *field_dst8 = av_strdup(*field_src8);
00759d71
             if (*field_src8 && !*field_dst8)
                 ret = AVERROR(ENOMEM);
         } else if (o->type == AV_OPT_TYPE_BINARY) {
3b08d9d9
             int len = *(int *)(field_src8 + 1);
00759d71
             if (*field_dst8 != *field_src8)
                 av_freep(field_dst8);
             *field_dst8 = av_memdup(*field_src8, len);
             if (len && !*field_dst8) {
                 ret = AVERROR(ENOMEM);
                 len = 0;
             }
3b08d9d9
             *(int *)(field_dst8 + 1) = len;
00759d71
         } else if (o->type == AV_OPT_TYPE_CONST) {
             // do nothing
4e179436
         } else if (o->type == AV_OPT_TYPE_DICT) {
             AVDictionary **sdict = (AVDictionary **) field_src;
             AVDictionary **ddict = (AVDictionary **) field_dst;
             if (*sdict != *ddict)
                 av_dict_free(ddict);
             *ddict = NULL;
             av_dict_copy(ddict, *sdict, 0);
             if (av_dict_count(*sdict) != av_dict_count(*ddict))
                 ret = AVERROR(ENOMEM);
00759d71
         } else {
564b4591
             int size = opt_size(o->type);
             if (size < 0)
                 ret = size;
             else
                 memcpy(field_dst, field_src, size);
00759d71
         }
     }
     return ret;
 }
 
0ad654d4
 int av_opt_query_ranges(AVOptionRanges **ranges_arg, void *obj, const char *key, int flags)
 {
eaed4da9
     int ret;
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;
 
eaed4da9
     ret = callback(ranges_arg, obj, key, flags);
     if (ret >= 0) {
         if (!(flags & AV_OPT_MULTI_COMPONENT_RANGE))
             ret = 1;
         (*ranges_arg)->nb_components = ret;
     }
     return ret;
a8e0d51b
 }
 
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;
eaed4da9
     ranges->nb_components = 1;
a8e0d51b
     range->is_range = 1;
     range->value_min = field->min;
     range->value_max = field->max;
 
0ad654d4
     switch (field->type) {
9117748c
     case AV_OPT_TYPE_BOOL:
a8e0d51b
     case AV_OPT_TYPE_INT:
     case AV_OPT_TYPE_INT64:
2f935baa
     case AV_OPT_TYPE_UINT64:
a8e0d51b
     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;
eaed4da9
     return 1;
a8e0d51b
 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;
 
8c272923
     if (!ranges)
         return;
 
eaed4da9
     for (i = 0; i < ranges->nb_ranges * ranges->nb_components; i++) {
a8e0d51b
         AVOptionRange *range = ranges->range[i];
3aac5fcf
         if (range) {
             av_freep(&range->str);
             av_freep(&ranges->range[i]);
         }
a8e0d51b
     }
     av_freep(&ranges->range);
     av_freep(rangesp);
 }
 
eec69332
 int av_opt_is_set_to_default(void *obj, const AVOption *o)
 {
     int64_t i64;
     double d, d2;
     float f;
     AVRational q;
     int ret, w, h;
     char *str;
     void *dst;
 
     if (!o || !obj)
         return AVERROR(EINVAL);
 
     dst = ((uint8_t*)obj) + o->offset;
 
     switch (o->type) {
     case AV_OPT_TYPE_CONST:
         return 1;
9117748c
     case AV_OPT_TYPE_BOOL:
eec69332
     case AV_OPT_TYPE_FLAGS:
     case AV_OPT_TYPE_PIXEL_FMT:
     case AV_OPT_TYPE_SAMPLE_FMT:
     case AV_OPT_TYPE_INT:
     case AV_OPT_TYPE_CHANNEL_LAYOUT:
     case AV_OPT_TYPE_DURATION:
     case AV_OPT_TYPE_INT64:
2f935baa
     case AV_OPT_TYPE_UINT64:
eec69332
         read_number(o, dst, NULL, NULL, &i64);
         return o->default_val.i64 == i64;
     case AV_OPT_TYPE_STRING:
         str = *(char **)dst;
         if (str == o->default_val.str) //2 NULLs
             return 1;
         if (!str || !o->default_val.str) //1 NULL
             return 0;
         return !strcmp(str, o->default_val.str);
     case AV_OPT_TYPE_DOUBLE:
         read_number(o, dst, &d, NULL, NULL);
         return o->default_val.dbl == d;
     case AV_OPT_TYPE_FLOAT:
         read_number(o, dst, &d, NULL, NULL);
         f = o->default_val.dbl;
         d2 = f;
         return d2 == d;
     case AV_OPT_TYPE_RATIONAL:
         q = av_d2q(o->default_val.dbl, INT_MAX);
         return !av_cmp_q(*(AVRational*)dst, q);
     case AV_OPT_TYPE_BINARY: {
         struct {
             uint8_t *data;
             int size;
         } tmp = {0};
         int opt_size = *(int *)((void **)dst + 1);
         void *opt_ptr = *(void **)dst;
41a52740
         if (!opt_size && (!o->default_val.str || !strlen(o->default_val.str)))
eec69332
             return 1;
41a52740
         if (!opt_size ||  !o->default_val.str || !strlen(o->default_val.str ))
eec69332
             return 0;
         if (opt_size != strlen(o->default_val.str) / 2)
             return 0;
         ret = set_string_binary(NULL, NULL, o->default_val.str, &tmp.data);
         if (!ret)
             ret = !memcmp(opt_ptr, tmp.data, tmp.size);
         av_free(tmp.data);
         return ret;
     }
     case AV_OPT_TYPE_DICT:
         /* Binary and dict have not default support yet. Any pointer is not default. */
         return !!(*(void **)dst);
     case AV_OPT_TYPE_IMAGE_SIZE:
         if (!o->default_val.str || !strcmp(o->default_val.str, "none"))
             w = h = 0;
         else if ((ret = av_parse_video_size(&w, &h, o->default_val.str)) < 0)
             return ret;
         return (w == *(int *)dst) && (h == *((int *)dst+1));
     case AV_OPT_TYPE_VIDEO_RATE:
         q = (AVRational){0, 0};
ace91616
         if (o->default_val.str) {
             if ((ret = av_parse_video_rate(&q, o->default_val.str)) < 0)
                 return ret;
         }
eec69332
         return !av_cmp_q(*(AVRational*)dst, q);
     case AV_OPT_TYPE_COLOR: {
         uint8_t color[4] = {0, 0, 0, 0};
eb74839c
         if (o->default_val.str) {
             if ((ret = av_parse_color(color, o->default_val.str, -1, NULL)) < 0)
                 return ret;
         }
eec69332
         return !memcmp(color, dst, sizeof(color));
     }
     default:
         av_log(obj, AV_LOG_WARNING, "Not supported option type: %d, option name: %s\n", o->type, o->name);
         break;
     }
     return AVERROR_PATCHWELCOME;
 }
 
 int av_opt_is_set_to_default_by_name(void *obj, const char *name, int search_flags)
 {
     const AVOption *o;
     void *target;
     if (!obj)
         return AVERROR(EINVAL);
     o = av_opt_find2(obj, name, NULL, 0, search_flags, &target);
     if (!o)
         return AVERROR_OPTION_NOT_FOUND;
     return av_opt_is_set_to_default(target, o);
 }
 
bee5844d
 int av_opt_serialize(void *obj, int opt_flags, int flags, char **buffer,
                      const char key_val_sep, const char pairs_sep)
 {
     const AVOption *o = NULL;
     uint8_t *buf;
     AVBPrint bprint;
     int ret, cnt = 0;
0cb994df
     const char special_chars[] = {pairs_sep, key_val_sep, '\0'};
 
     if (pairs_sep == '\0' || key_val_sep == '\0' || pairs_sep == key_val_sep ||
         pairs_sep == '\\' || key_val_sep == '\\') {
         av_log(obj, AV_LOG_ERROR, "Invalid separator(s) found.");
         return AVERROR(EINVAL);
     }
bee5844d
 
     if (!obj || !buffer)
         return AVERROR(EINVAL);
 
     *buffer = NULL;
     av_bprint_init(&bprint, 64, AV_BPRINT_SIZE_UNLIMITED);
 
     while (o = av_opt_next(obj, o)) {
         if (o->type == AV_OPT_TYPE_CONST)
             continue;
         if ((flags & AV_OPT_SERIALIZE_OPT_FLAGS_EXACT) && o->flags != opt_flags)
             continue;
         else if (((o->flags & opt_flags) != opt_flags))
             continue;
         if (flags & AV_OPT_SERIALIZE_SKIP_DEFAULTS && av_opt_is_set_to_default(obj, o) > 0)
             continue;
         if ((ret = av_opt_get(obj, o->name, 0, &buf)) < 0) {
             av_bprint_finalize(&bprint, NULL);
             return ret;
         }
         if (buf) {
             if (cnt++)
                 av_bprint_append_data(&bprint, &pairs_sep, 1);
0cb994df
             av_bprint_escape(&bprint, o->name, special_chars, AV_ESCAPE_MODE_BACKSLASH, 0);
             av_bprint_append_data(&bprint, &key_val_sep, 1);
             av_bprint_escape(&bprint, buf, special_chars, AV_ESCAPE_MODE_BACKSLASH, 0);
bee5844d
             av_freep(&buf);
         }
     }
     av_bprint_finalize(&bprint, buffer);
     return 0;
 }