falkTX
/
FFmpeg
mirror of https://github.com/falkTX/FFmpeg.git
1
0
Fork 0
Code Issues 0 Releases 338 Wiki Activity
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
57240 Commits
32 Branches
283MB
Tree: 640c70ddc2
Branches Tags
${ item.name }
Create branch ${ searchTerm }
from '640c70ddc2'
${ noResults }
FFmpeg/libavutil/opt.c

1671 lines
54KB
Raw Blame History 

  1. /*

  2.  * AVOptions

  3.  * Copyright (c) 2005 Michael Niedermayer <michaelni@gmx.at>

  4.  *

  5.  * This file is part of FFmpeg.

  6.  *

  7.  * FFmpeg is free software; you can redistribute it and/or

  8.  * modify it under the terms of the GNU Lesser General Public

  9.  * License as published by the Free Software Foundation; either

  10.  * version 2.1 of the License, or (at your option) any later version.

  11.  *

  12.  * FFmpeg is distributed in the hope that it will be useful,

  13.  * but WITHOUT ANY WARRANTY; without even the implied warranty of

  14.  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

  15.  * Lesser General Public License for more details.

  16.  *

  17.  * You should have received a copy of the GNU Lesser General Public

  18.  * License along with FFmpeg; if not, write to the Free Software

  19.  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

  20.  */

  21. 

  22. /**

  23.  * @file

  24.  * AVOptions

  25.  * @author Michael Niedermayer <michaelni@gmx.at>

  26.  */

  27. 

  28. #include "avutil.h"

  29. #include "avstring.h"

  30. #include "channel_layout.h"

  31. #include "common.h"

  32. #include "opt.h"

  33. #include "eval.h"

  34. #include "dict.h"

  35. #include "log.h"

  36. #include "parseutils.h"

  37. #include "pixdesc.h"

  38. #include "mathematics.h"

  39. #include "samplefmt.h"

  40. 

  41. #include <float.h>

  42. 

  43. #if FF_API_FIND_OPT

  44. //FIXME order them and do a bin search

  45. const AVOption *av_find_opt(void *v, const char *name, const char *unit, int mask, int flags)

  46. {

  47.     const AVOption *o = NULL;

  48. 

  49.     while ((o = av_next_option(v, o))) {

  50.         if (!strcmp(o->name, name) && (!unit || (o->unit && !strcmp(o->unit, unit))) && (o->flags & mask) == flags)

  51.             return o;

  52.     }

  53.     return NULL;

  54. }

  55. #endif

  56. 

  57. #if FF_API_OLD_AVOPTIONS

  58. const AVOption *av_next_option(void *obj, const AVOption *last)

  59. {

  60.     return av_opt_next(obj, last);

  61. }

  62. #endif

  63. 

  64. const AVOption *av_opt_next(void *obj, const AVOption *last)

  65. {

  66.     AVClass *class = *(AVClass**)obj;

  67.     if (!last && class && class->option && class->option[0].name)

  68.         return class->option;

  69.     if (last && last[1].name)

  70.         return ++last;

  71.     return NULL;

  72. }

  73. 

  74. static int read_number(const AVOption *o, void *dst, double *num, int *den, int64_t *intnum)

  75. {

  76.     switch (o->type) {

  77.     case AV_OPT_TYPE_FLAGS:     *intnum = *(unsigned int*)dst;return 0;

  78.     case AV_OPT_TYPE_PIXEL_FMT:

  79.     case AV_OPT_TYPE_SAMPLE_FMT:

  80.     case AV_OPT_TYPE_INT:       *intnum = *(int         *)dst;return 0;

  81.     case AV_OPT_TYPE_CHANNEL_LAYOUT:

  82.     case AV_OPT_TYPE_DURATION:

  83.     case AV_OPT_TYPE_INT64:     *intnum = *(int64_t     *)dst;return 0;

  84.     case AV_OPT_TYPE_FLOAT:     *num    = *(float       *)dst;return 0;

  85.     case AV_OPT_TYPE_DOUBLE:    *num    = *(double      *)dst;return 0;

  86.     case AV_OPT_TYPE_RATIONAL:  *intnum = ((AVRational*)dst)->num;

  87.                                 *den    = ((AVRational*)dst)->den;

  88.                                                         return 0;

  89.     case AV_OPT_TYPE_CONST:     *num    = o->default_val.dbl; return 0;

  90.     }

  91.     return AVERROR(EINVAL);

  92. }

  93. 

  94. static int write_number(void *obj, const AVOption *o, void *dst, double num, int den, int64_t intnum)

  95. {

  96.     if (o->max*den < num*intnum || o->min*den > num*intnum) {

  97.         av_log(obj, AV_LOG_ERROR, "Value %f for parameter '%s' out of range [%g - %g]\n",

  98.                num*intnum/den, o->name, o->min, o->max);

  99.         return AVERROR(ERANGE);

  100.     }

  101. 

  102.     switch (o->type) {

  103.     case AV_OPT_TYPE_FLAGS:

  104.     case AV_OPT_TYPE_PIXEL_FMT:

  105.     case AV_OPT_TYPE_SAMPLE_FMT:

  106.     case AV_OPT_TYPE_INT:   *(int       *)dst= llrint(num/den)*intnum; break;

  107.     case AV_OPT_TYPE_DURATION:

  108.     case AV_OPT_TYPE_CHANNEL_LAYOUT:

  109.     case AV_OPT_TYPE_INT64: *(int64_t   *)dst= llrint(num/den)*intnum; break;

  110.     case AV_OPT_TYPE_FLOAT: *(float     *)dst= num*intnum/den;         break;

  111.     case AV_OPT_TYPE_DOUBLE:*(double    *)dst= num*intnum/den;         break;

  112.     case AV_OPT_TYPE_RATIONAL:

  113.         if ((int)num == num) *(AVRational*)dst= (AVRational){num*intnum, den};

  114.         else                 *(AVRational*)dst= av_d2q(num*intnum/den, 1<<24);

  115.         break;

  116.     default:

  117.         return AVERROR(EINVAL);

  118.     }

  119.     return 0;

  120. }

  121. 

  122. static const double const_values[] = {

  123.     M_PI,

  124.     M_E,

  125.     FF_QP2LAMBDA,

  126.     0

  127. };

  128. 

  129. static const char * const const_names[] = {

  130.     "PI",

  131.     "E",

  132.     "QP2LAMBDA",

  133.     0

  134. };

  135. 

  136. static int hexchar2int(char c) {

  137.     if (c >= '0' && c <= '9') return c - '0';

  138.     if (c >= 'a' && c <= 'f') return c - 'a' + 10;

  139.     if (c >= 'A' && c <= 'F') return c - 'A' + 10;

  140.     return -1;

  141. }

  142. 

  143. static int set_string_binary(void *obj, const AVOption *o, const char *val, uint8_t **dst)

  144. {

  145.     int *lendst = (int *)(dst + 1);

  146.     uint8_t *bin, *ptr;

  147.     int len = strlen(val);

  148. 

  149.     av_freep(dst);

  150.     *lendst = 0;

  151. 

  152.     if (len & 1)

  153.         return AVERROR(EINVAL);

  154.     len /= 2;

  155. 

  156.     ptr = bin = av_malloc(len);

  157.     while (*val) {

  158.         int a = hexchar2int(*val++);

  159.         int b = hexchar2int(*val++);

  160.         if (a < 0 || b < 0) {

  161.             av_free(bin);

  162.             return AVERROR(EINVAL);

  163.         }

  164.         *ptr++ = (a << 4) | b;

  165.     }

  166.     *dst = bin;

  167.     *lendst = len;

  168. 

  169.     return 0;

  170. }

  171. 

  172. static int set_string(void *obj, const AVOption *o, const char *val, uint8_t **dst)

  173. {

  174.     av_freep(dst);

  175.     *dst = av_strdup(val);

  176.     return 0;

  177. }

  178. 

  179. #define DEFAULT_NUMVAL(opt) ((opt->type == AV_OPT_TYPE_INT64 || \

  180.                               opt->type == AV_OPT_TYPE_CONST || \

  181.                               opt->type == AV_OPT_TYPE_FLAGS || \

  182.                               opt->type == AV_OPT_TYPE_INT) ? \

  183.                              opt->default_val.i64 : opt->default_val.dbl)

  184. 

  185. static int set_string_number(void *obj, void *target_obj, const AVOption *o, const char *val, void *dst)

  186. {

  187.     int ret = 0, notfirst = 0;

  188.     for (;;) {

  189.         int i, den = 1;

  190.         char buf[256];

  191.         int cmd = 0;

  192.         double d, num = 1;

  193.         int64_t intnum = 1;

  194. 

  195.         i = 0;

  196.         if (*val == '+' || *val == '-') {

  197.             if (o->type == AV_OPT_TYPE_FLAGS)

  198.                 cmd = *(val++);

  199.             else if (!notfirst)

  200.                 buf[i++] = *val;

  201.         }

  202. 

  203.         for (; i < sizeof(buf) - 1 && val[i] && val[i] != '+' && val[i] != '-'; i++)

  204.             buf[i] = val[i];

  205.         buf[i] = 0;

  206. 

  207.         {

  208.             const AVOption *o_named = av_opt_find(target_obj, buf, o->unit, 0, 0);

  209.             if (o_named && o_named->type == AV_OPT_TYPE_CONST)

  210.                 d = DEFAULT_NUMVAL(o_named);

  211.             else if (!strcmp(buf, "default")) d = DEFAULT_NUMVAL(o);

  212.             else if (!strcmp(buf, "max"    )) d = o->max;

  213.             else if (!strcmp(buf, "min"    )) d = o->min;

  214.             else if (!strcmp(buf, "none"   )) d = 0;

  215.             else if (!strcmp(buf, "all"    )) d = ~0;

  216.             else {

  217.                 int res = av_expr_parse_and_eval(&d, buf, const_names, const_values, NULL, NULL, NULL, NULL, NULL, 0, obj);

  218.                 if (res < 0) {

  219.                     av_log(obj, AV_LOG_ERROR, "Unable to parse option value \"%s\"\n", val);

  220.                     return res;

  221.                 }

  222.             }

  223.         }

  224.         if (o->type == AV_OPT_TYPE_FLAGS) {

  225.             read_number(o, dst, NULL, NULL, &intnum);

  226.             if      (cmd == '+') d = intnum | (int64_t)d;

  227.             else if (cmd == '-') d = intnum &~(int64_t)d;

  228.         } else {

  229.             read_number(o, dst, &num, &den, &intnum);

  230.             if      (cmd == '+') d = notfirst*num*intnum/den + d;

  231.             else if (cmd == '-') d = notfirst*num*intnum/den - d;

  232.         }

  233. 

  234.         if ((ret = write_number(obj, o, dst, d, 1, 1)) < 0)

  235.             return ret;

  236.         val += i;

  237.         if (!*val)

  238.             return 0;

  239.         notfirst = 1;

  240.     }

  241. 

  242.     return 0;

  243. }

  244. 

  245. #if FF_API_OLD_AVOPTIONS

  246. int av_set_string3(void *obj, const char *name, const char *val, int alloc, const AVOption **o_out)

  247. {

  248.     const AVOption *o = av_opt_find(obj, name, NULL, 0, 0);

  249.     if (o_out)

  250.         *o_out = o;

  251.     return av_opt_set(obj, name, val, 0);

  252. }

  253. #endif

  254. 

  255. int av_opt_set(void *obj, const char *name, const char *val, int search_flags)

  256. {

  257.     int ret;

  258.     void *dst, *target_obj;

  259.     const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);

  260.     if (!o || !target_obj)

  261.         return AVERROR_OPTION_NOT_FOUND;

  262.     if (!val && (o->type != AV_OPT_TYPE_STRING &&

  263.                  o->type != AV_OPT_TYPE_PIXEL_FMT && o->type != AV_OPT_TYPE_SAMPLE_FMT &&

  264.                  o->type != AV_OPT_TYPE_IMAGE_SIZE && o->type != AV_OPT_TYPE_VIDEO_RATE &&

  265.                  o->type != AV_OPT_TYPE_DURATION && o->type != AV_OPT_TYPE_COLOR &&

  266.                  o->type != AV_OPT_TYPE_CHANNEL_LAYOUT))

  267.         return AVERROR(EINVAL);

  268. 

  269.     dst = ((uint8_t*)target_obj) + o->offset;

  270.     switch (o->type) {

  271.     case AV_OPT_TYPE_STRING:   return set_string(obj, o, val, dst);

  272.     case AV_OPT_TYPE_BINARY:   return set_string_binary(obj, o, val, dst);

  273.     case AV_OPT_TYPE_FLAGS:

  274.     case AV_OPT_TYPE_INT:

  275.     case AV_OPT_TYPE_INT64:

  276.     case AV_OPT_TYPE_FLOAT:

  277.     case AV_OPT_TYPE_DOUBLE:

  278.     case AV_OPT_TYPE_RATIONAL: return set_string_number(obj, target_obj, o, val, dst);

  279.     case AV_OPT_TYPE_IMAGE_SIZE:

  280.         if (!val || !strcmp(val, "none")) {

  281.             *(int *)dst = *((int *)dst + 1) = 0;

  282.             return 0;

  283.         }

  284.         ret = av_parse_video_size(dst, ((int *)dst) + 1, val);

  285.         if (ret < 0)

  286.             av_log(obj, AV_LOG_ERROR, "Unable to parse option value \"%s\" as image size\n", val);

  287.         return ret;

  288.     case AV_OPT_TYPE_VIDEO_RATE:

  289.         if (!val) {

  290.             ret = AVERROR(EINVAL);

  291.         } else {

  292.             ret = av_parse_video_rate(dst, val);

  293.         }

  294.         if (ret < 0)

  295.             av_log(obj, AV_LOG_ERROR, "Unable to parse option value \"%s\" as video rate\n", val);

  296.         return ret;

  297.     case AV_OPT_TYPE_PIXEL_FMT:

  298.         if (!val || !strcmp(val, "none")) {

  299.             ret = AV_PIX_FMT_NONE;

  300.         } else {

  301.             ret = av_get_pix_fmt(val);

  302.             if (ret == AV_PIX_FMT_NONE) {

  303.                 char *tail;

  304.                 ret = strtol(val, &tail, 0);

  305.                 if (*tail || (unsigned)ret >= AV_PIX_FMT_NB) {

  306.                     av_log(obj, AV_LOG_ERROR, "Unable to parse option value \"%s\" as pixel format\n", val);

  307.                     return AVERROR(EINVAL);

  308.                 }

  309.             }

  310.         }

  311.         *(enum AVPixelFormat *)dst = ret;

  312.         return 0;

  313.     case AV_OPT_TYPE_SAMPLE_FMT:

  314.         if (!val || !strcmp(val, "none")) {

  315.             ret = AV_SAMPLE_FMT_NONE;

  316.         } else {

  317.             ret = av_get_sample_fmt(val);

  318.             if (ret == AV_SAMPLE_FMT_NONE) {

  319.                 char *tail;

  320.                 ret = strtol(val, &tail, 0);

  321.                 if (*tail || (unsigned)ret >= AV_SAMPLE_FMT_NB) {

  322.                     av_log(obj, AV_LOG_ERROR, "Unable to parse option value \"%s\" as sample format\n", val);

  323.                     return AVERROR(EINVAL);

  324.                 }

  325.             }

  326.         }

  327.         *(enum AVSampleFormat *)dst = ret;

  328.         return 0;

  329.     case AV_OPT_TYPE_DURATION:

  330.         if (!val) {

  331.             *(int64_t *)dst = 0;

  332.             return 0;

  333.         } else {

  334.             if ((ret = av_parse_time(dst, val, 1)) < 0)

  335.                 av_log(obj, AV_LOG_ERROR, "Unable to parse option value \"%s\" as duration\n", val);

  336.             return ret;

  337.         }

  338.         break;

  339.     case AV_OPT_TYPE_COLOR:

  340.         if (!val) {

  341.             return 0;

  342.         } else {

  343.             ret = av_parse_color(dst, val, -1, obj);

  344.             if (ret < 0)

  345.                 av_log(obj, AV_LOG_ERROR, "Unable to parse option value \"%s\" as color\n", val);

  346.             return ret;

  347.         }

  348.         break;

  349.     case AV_OPT_TYPE_CHANNEL_LAYOUT:

  350.         if (!val || !strcmp(val, "none")) {

  351.             *(int64_t *)dst = 0;

  352.         } else {

  353. #if FF_API_GET_CHANNEL_LAYOUT_COMPAT

  354.             int64_t cl = ff_get_channel_layout(val, 0);

  355. #else

  356.             int64_t cl = av_get_channel_layout(val);

  357. #endif

  358.             if (!cl) {

  359.                 av_log(obj, AV_LOG_ERROR, "Unable to parse option value \"%s\" as channel layout\n", val);

  360.                 ret = AVERROR(EINVAL);

  361.             }

  362.             *(int64_t *)dst = cl;

  363.             return ret;

  364.         }

  365.         break;

  366.     }

  367. 

  368.     av_log(obj, AV_LOG_ERROR, "Invalid option type.\n");

  369.     return AVERROR(EINVAL);

  370. }

  371. 

  372. #define OPT_EVAL_NUMBER(name, opttype, vartype)\

  373.     int av_opt_eval_ ## name(void *obj, const AVOption *o, const char *val, vartype *name ## _out)\

  374.     {\

  375.         if (!o || o->type != opttype)\

  376.             return AVERROR(EINVAL);\

  377.         return set_string_number(obj, obj, o, val, name ## _out);\

  378.     }

  379. 

  380. OPT_EVAL_NUMBER(flags,  AV_OPT_TYPE_FLAGS,    int)

  381. OPT_EVAL_NUMBER(int,    AV_OPT_TYPE_INT,      int)

  382. OPT_EVAL_NUMBER(int64,  AV_OPT_TYPE_INT64,    int64_t)

  383. OPT_EVAL_NUMBER(float,  AV_OPT_TYPE_FLOAT,    float)

  384. OPT_EVAL_NUMBER(double, AV_OPT_TYPE_DOUBLE,   double)

  385. OPT_EVAL_NUMBER(q,      AV_OPT_TYPE_RATIONAL, AVRational)

  386. 

  387. static int set_number(void *obj, const char *name, double num, int den, int64_t intnum,

  388.                                   int search_flags)

  389. {

  390.     void *dst, *target_obj;

  391.     const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);

  392. 

  393.     if (!o || !target_obj)

  394.         return AVERROR_OPTION_NOT_FOUND;

  395. 

  396.     dst = ((uint8_t*)target_obj) + o->offset;

  397.     return write_number(obj, o, dst, num, den, intnum);

  398. }

  399. 

  400. #if FF_API_OLD_AVOPTIONS

  401. const AVOption *av_set_double(void *obj, const char *name, double n)

  402. {

  403.     const AVOption *o = av_opt_find(obj, name, NULL, 0, 0);

  404.     if (set_number(obj, name, n, 1, 1, 0) < 0)

  405.         return NULL;

  406.     return o;

  407. }

  408. 

  409. const AVOption *av_set_q(void *obj, const char *name, AVRational n)

  410. {

  411.     const AVOption *o = av_opt_find(obj, name, NULL, 0, 0);

  412.     if (set_number(obj, name, n.num, n.den, 1, 0) < 0)

  413.         return NULL;

  414.     return o;

  415. }

  416. 

  417. const AVOption *av_set_int(void *obj, const char *name, int64_t n)

  418. {

  419.     const AVOption *o = av_opt_find(obj, name, NULL, 0, 0);

  420.     if (set_number(obj, name, 1, 1, n, 0) < 0)

  421.         return NULL;

  422.     return o;

  423. }

  424. #endif

  425. 

  426. int av_opt_set_int(void *obj, const char *name, int64_t val, int search_flags)

  427. {

  428.     return set_number(obj, name, 1, 1, val, search_flags);

  429. }

  430. 

  431. int av_opt_set_double(void *obj, const char *name, double val, int search_flags)

  432. {

  433.     return set_number(obj, name, val, 1, 1, search_flags);

  434. }

  435. 

  436. int av_opt_set_q(void *obj, const char *name, AVRational val, int search_flags)

  437. {

  438.     return set_number(obj, name, val.num, val.den, 1, search_flags);

  439. }

  440. 

  441. int av_opt_set_bin(void *obj, const char *name, const uint8_t *val, int len, int search_flags)

  442. {

  443.     void *target_obj;

  444.     const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);

  445.     uint8_t *ptr;

  446.     uint8_t **dst;

  447.     int *lendst;

  448. 

  449.     if (!o || !target_obj)

  450.         return AVERROR_OPTION_NOT_FOUND;

  451. 

  452.     if (o->type != AV_OPT_TYPE_BINARY)

  453.         return AVERROR(EINVAL);

  454. 

  455.     ptr = len ? av_malloc(len) : NULL;

  456.     if (len && !ptr)

  457.         return AVERROR(ENOMEM);

  458. 

  459.     dst = (uint8_t **)(((uint8_t *)target_obj) + o->offset);

  460.     lendst = (int *)(dst + 1);

  461. 

  462.     av_free(*dst);

  463.     *dst = ptr;

  464.     *lendst = len;

  465.     if (len)

  466.         memcpy(ptr, val, len);

  467. 

  468.     return 0;

  469. }

  470. 

  471. int av_opt_set_image_size(void *obj, const char *name, int w, int h, int search_flags)

  472. {

  473.     void *target_obj;

  474.     const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);

  475. 

  476.     if (!o || !target_obj)

  477.         return AVERROR_OPTION_NOT_FOUND;

  478.     if (o->type != AV_OPT_TYPE_IMAGE_SIZE) {

  479.         av_log(obj, AV_LOG_ERROR,

  480.                "The value set by option '%s' is not an image size.\n", o->name);

  481.         return AVERROR(EINVAL);

  482.     }

  483.     if (w<0 || h<0) {

  484.         av_log(obj, AV_LOG_ERROR,

  485.                "Invalid negative size value %dx%d for size '%s'\n", w, h, o->name);

  486.         return AVERROR(EINVAL);

  487.     }

  488.     *(int *)(((uint8_t *)target_obj)             + o->offset) = w;

  489.     *(int *)(((uint8_t *)target_obj+sizeof(int)) + o->offset) = h;

  490.     return 0;

  491. }

  492. 

  493. int av_opt_set_video_rate(void *obj, const char *name, AVRational val, int search_flags)

  494. {

  495.     void *target_obj;

  496.     const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);

  497. 

  498.     if (!o || !target_obj)

  499.         return AVERROR_OPTION_NOT_FOUND;

  500.     if (o->type != AV_OPT_TYPE_VIDEO_RATE) {

  501.         av_log(obj, AV_LOG_ERROR,

  502.                "The value set by option '%s' is not a video rate.\n", o->name);

  503.         return AVERROR(EINVAL);

  504.     }

  505.     if (val.num <= 0 || val.den <= 0)

  506.         return AVERROR(EINVAL);

  507.     return set_number(obj, name, val.num, val.den, 1, search_flags);

  508. }

  509. 

  510. static int set_format(void *obj, const char *name, int fmt, int search_flags,

  511.                       enum AVOptionType type, const char *desc, int nb_fmts)

  512. {

  513.     void *target_obj;

  514.     const AVOption *o = av_opt_find2(obj, name, NULL, 0,

  515.                                      search_flags, &target_obj);

  516.     int min, max;

  517.     const AVClass *class = *(AVClass **)obj;

  518. 

  519.     if (!o || !target_obj)

  520.         return AVERROR_OPTION_NOT_FOUND;

  521.     if (o->type != type) {

  522.         av_log(obj, AV_LOG_ERROR,

  523.                "The value set by option '%s' is not a %s format", name, desc);

  524.         return AVERROR(EINVAL);

  525.     }

  526. 

  527. #if LIBAVUTIL_VERSION_MAJOR < 53

  528.     if (class->version && class->version < AV_VERSION_INT(52, 11, 100)) {

  529.         min = -1;

  530.         max = nb_fmts-1;

  531.     } else

  532. #endif

  533.     {

  534.         min = FFMIN(o->min, -1);

  535.         max = FFMAX(o->max, nb_fmts-1);

  536.     }

  537.     if (fmt < min || fmt > max) {

  538.         av_log(obj, AV_LOG_ERROR,

  539.                "Value %d for parameter '%s' out of %s format range [%d - %d]\n",

  540.                fmt, name, desc, min, max);

  541.         return AVERROR(ERANGE);

  542.     }

  543.     *(int *)(((uint8_t *)target_obj) + o->offset) = fmt;

  544.     return 0;

  545. }

  546. 

  547. int av_opt_set_pixel_fmt(void *obj, const char *name, enum AVPixelFormat fmt, int search_flags)

  548. {

  549.     return set_format(obj, name, fmt, search_flags, AV_OPT_TYPE_PIXEL_FMT, "pixel", AV_PIX_FMT_NB);

  550. }

  551. 

  552. int av_opt_set_sample_fmt(void *obj, const char *name, enum AVSampleFormat fmt, int search_flags)

  553. {

  554.     return set_format(obj, name, fmt, search_flags, AV_OPT_TYPE_SAMPLE_FMT, "sample", AV_SAMPLE_FMT_NB);

  555. }

  556. 

  557. int av_opt_set_channel_layout(void *obj, const char *name, int64_t cl, int search_flags)

  558. {

  559.     void *target_obj;

  560.     const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);

  561. 

  562.     if (!o || !target_obj)

  563.         return AVERROR_OPTION_NOT_FOUND;

  564.     if (o->type != AV_OPT_TYPE_CHANNEL_LAYOUT) {

  565.         av_log(obj, AV_LOG_ERROR,

  566.                "The value set by option '%s' is not a channel layout.\n", o->name);

  567.         return AVERROR(EINVAL);

  568.     }

  569.     *(int *)(((int64_t *)target_obj) + o->offset) = cl;

  570.     return 0;

  571. }

  572. 

  573. #if FF_API_OLD_AVOPTIONS

  574. /**

  575.  *

  576.  * @param buf a buffer which is used for returning non string values as strings, can be NULL

  577.  * @param buf_len allocated length in bytes of buf

  578.  */

  579. const char *av_get_string(void *obj, const char *name, const AVOption **o_out, char *buf, int buf_len)

  580. {

  581.     const AVOption *o = av_opt_find(obj, name, NULL, 0, AV_OPT_SEARCH_CHILDREN);

  582.     void *dst;

  583.     uint8_t *bin;

  584.     int len, i;

  585.     if (!o)

  586.         return NULL;

  587.     if (o->type != AV_OPT_TYPE_STRING && (!buf || !buf_len))

  588.         return NULL;

  589. 

  590.     dst= ((uint8_t*)obj) + o->offset;

  591.     if (o_out) *o_out= o;

  592. 

  593.     switch (o->type) {

  594.     case AV_OPT_TYPE_FLAGS:     snprintf(buf, buf_len, "0x%08X",*(int    *)dst);break;

  595.     case AV_OPT_TYPE_INT:       snprintf(buf, buf_len, "%d" , *(int    *)dst);break;

  596.     case AV_OPT_TYPE_INT64:     snprintf(buf, buf_len, "%"PRId64, *(int64_t*)dst);break;

  597.     case AV_OPT_TYPE_FLOAT:     snprintf(buf, buf_len, "%f" , *(float  *)dst);break;

  598.     case AV_OPT_TYPE_DOUBLE:    snprintf(buf, buf_len, "%f" , *(double *)dst);break;

  599.     case AV_OPT_TYPE_RATIONAL:  snprintf(buf, buf_len, "%d/%d", ((AVRational*)dst)->num, ((AVRational*)dst)->den);break;

  600.     case AV_OPT_TYPE_CONST:     snprintf(buf, buf_len, "%f" , o->default_val.dbl);break;

  601.     case AV_OPT_TYPE_STRING:    return *(void**)dst;

  602.     case AV_OPT_TYPE_BINARY:

  603.         len = *(int*)(((uint8_t *)dst) + sizeof(uint8_t *));

  604.         if (len >= (buf_len + 1)/2) return NULL;

  605.         bin = *(uint8_t**)dst;

  606.         for (i = 0; i < len; i++) snprintf(buf + i*2, 3, "%02X", bin[i]);

  607.         break;

  608.     default: return NULL;

  609.     }

  610.     return buf;

  611. }

  612. #endif

  613. 

  614. int av_opt_get(void *obj, const char *name, int search_flags, uint8_t **out_val)

  615. {

  616.     void *dst, *target_obj;

  617.     const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);

  618.     uint8_t *bin, buf[128];

  619.     int len, i, ret;

  620.     int64_t i64;

  621. 

  622.     if (!o || !target_obj || (o->offset<=0 && o->type != AV_OPT_TYPE_CONST))

  623.         return AVERROR_OPTION_NOT_FOUND;

  624. 

  625.     dst = (uint8_t*)target_obj + o->offset;

  626. 

  627.     buf[0] = 0;

  628.     switch (o->type) {

  629.     case AV_OPT_TYPE_FLAGS:     ret = snprintf(buf, sizeof(buf), "0x%08X",  *(int    *)dst);break;

  630.     case AV_OPT_TYPE_INT:       ret = snprintf(buf, sizeof(buf), "%d" ,     *(int    *)dst);break;

  631.     case AV_OPT_TYPE_INT64:     ret = snprintf(buf, sizeof(buf), "%"PRId64, *(int64_t*)dst);break;

  632.     case AV_OPT_TYPE_FLOAT:     ret = snprintf(buf, sizeof(buf), "%f" ,     *(float  *)dst);break;

  633.     case AV_OPT_TYPE_DOUBLE:    ret = snprintf(buf, sizeof(buf), "%f" ,     *(double *)dst);break;

  634.     case AV_OPT_TYPE_VIDEO_RATE:

  635.     case AV_OPT_TYPE_RATIONAL:  ret = snprintf(buf, sizeof(buf), "%d/%d",   ((AVRational*)dst)->num, ((AVRational*)dst)->den);break;

  636.     case AV_OPT_TYPE_CONST:     ret = snprintf(buf, sizeof(buf), "%f" ,     o->default_val.dbl);break;

  637.     case AV_OPT_TYPE_STRING:

  638.         if (*(uint8_t**)dst)

  639.             *out_val = av_strdup(*(uint8_t**)dst);

  640.         else

  641.             *out_val = av_strdup("");

  642.         return 0;

  643.     case AV_OPT_TYPE_BINARY:

  644.         len = *(int*)(((uint8_t *)dst) + sizeof(uint8_t *));

  645.         if ((uint64_t)len*2 + 1 > INT_MAX)

  646.             return AVERROR(EINVAL);

  647.         if (!(*out_val = av_malloc(len*2 + 1)))

  648.             return AVERROR(ENOMEM);

  649.         bin = *(uint8_t**)dst;

  650.         for (i = 0; i < len; i++)

  651.             snprintf(*out_val + i*2, 3, "%02X", bin[i]);

  652.         return 0;

  653.     case AV_OPT_TYPE_IMAGE_SIZE:

  654.         ret = snprintf(buf, sizeof(buf), "%dx%d", ((int *)dst)[0], ((int *)dst)[1]);

  655.         break;

  656.     case AV_OPT_TYPE_PIXEL_FMT:

  657.         ret = snprintf(buf, sizeof(buf), "%s", (char *)av_x_if_null(av_get_pix_fmt_name(*(enum AVPixelFormat *)dst), "none"));

  658.         break;

  659.     case AV_OPT_TYPE_SAMPLE_FMT:

  660.         ret = snprintf(buf, sizeof(buf), "%s", (char *)av_x_if_null(av_get_sample_fmt_name(*(enum AVSampleFormat *)dst), "none"));

  661.         break;

  662.     case AV_OPT_TYPE_DURATION:

  663.         i64 = *(int64_t *)dst;

  664.         ret = snprintf(buf, sizeof(buf), "%"PRIi64"d:%02d:%02d.%06d",

  665.                        i64 / 3600000000, (int)((i64 / 60000000) % 60),

  666.                        (int)((i64 / 1000000) % 60), (int)(i64 % 1000000));

  667.         break;

  668.     case AV_OPT_TYPE_COLOR:

  669.         ret = snprintf(buf, sizeof(buf), "0x%02x%02x%02x%02x", ((int *)dst)[0], ((int *)dst)[1], ((int *)dst)[2], ((int *)dst)[3]);

  670.         break;

  671.     case AV_OPT_TYPE_CHANNEL_LAYOUT:

  672.         i64 = *(int64_t *)dst;

  673.         ret = snprintf(buf, sizeof(buf), "0x%"PRIx64, i64);

  674.         break;

  675.     default:

  676.         return AVERROR(EINVAL);

  677.     }

  678. 

  679.     if (ret >= sizeof(buf))

  680.         return AVERROR(EINVAL);

  681.     *out_val = av_strdup(buf);

  682.     return 0;

  683. }

  684. 

  685. static int get_number(void *obj, const char *name, const AVOption **o_out, double *num, int *den, int64_t *intnum,

  686.                       int search_flags)

  687. {

  688.     void *dst, *target_obj;

  689.     const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);

  690.     if (!o || !target_obj)

  691.         goto error;

  692. 

  693.     dst = ((uint8_t*)target_obj) + o->offset;

  694. 

  695.     if (o_out) *o_out= o;

  696. 

  697.     return read_number(o, dst, num, den, intnum);

  698. 

  699. error:

  700.     *den=*intnum=0;

  701.     return -1;

  702. }

  703. 

  704. #if FF_API_OLD_AVOPTIONS

  705. double av_get_double(void *obj, const char *name, const AVOption **o_out)

  706. {

  707.     int64_t intnum=1;

  708.     double num=1;

  709.     int den=1;

  710. 

  711.     if (get_number(obj, name, o_out, &num, &den, &intnum, 0) < 0)

  712.         return NAN;

  713.     return num*intnum/den;

  714. }

  715. 

  716. AVRational av_get_q(void *obj, const char *name, const AVOption **o_out)

  717. {

  718.     int64_t intnum=1;

  719.     double num=1;

  720.     int den=1;

  721. 

  722.     if (get_number(obj, name, o_out, &num, &den, &intnum, 0) < 0)

  723.         return (AVRational){0, 0};

  724.     if (num == 1.0 && (int)intnum == intnum)

  725.         return (AVRational){intnum, den};

  726.     else

  727.         return av_d2q(num*intnum/den, 1<<24);

  728. }

  729. 

  730. int64_t av_get_int(void *obj, const char *name, const AVOption **o_out)

  731. {

  732.     int64_t intnum=1;

  733.     double num=1;

  734.     int den=1;

  735. 

  736.     if (get_number(obj, name, o_out, &num, &den, &intnum, 0) < 0)

  737.         return -1;

  738.     return num*intnum/den;

  739. }

  740. #endif

  741. 

  742. int av_opt_get_int(void *obj, const char *name, int search_flags, int64_t *out_val)

  743. {

  744.     int64_t intnum = 1;

  745.     double     num = 1;

  746.     int   ret, den = 1;

  747. 

  748.     if ((ret = get_number(obj, name, NULL, &num, &den, &intnum, search_flags)) < 0)

  749.         return ret;

  750.     *out_val = num*intnum/den;

  751.     return 0;

  752. }

  753. 

  754. int av_opt_get_double(void *obj, const char *name, int search_flags, double *out_val)

  755. {

  756.     int64_t intnum = 1;

  757.     double     num = 1;

  758.     int   ret, den = 1;

  759. 

  760.     if ((ret = get_number(obj, name, NULL, &num, &den, &intnum, search_flags)) < 0)

  761.         return ret;

  762.     *out_val = num*intnum/den;

  763.     return 0;

  764. }

  765. 

  766. int av_opt_get_q(void *obj, const char *name, int search_flags, AVRational *out_val)

  767. {

  768.     int64_t intnum = 1;

  769.     double     num = 1;

  770.     int   ret, den = 1;

  771. 

  772.     if ((ret = get_number(obj, name, NULL, &num, &den, &intnum, search_flags)) < 0)

  773.         return ret;

  774. 

  775.     if (num == 1.0 && (int)intnum == intnum)

  776.         *out_val = (AVRational){intnum, den};

  777.     else

  778.         *out_val = av_d2q(num*intnum/den, 1<<24);

  779.     return 0;

  780. }

  781. 

  782. int av_opt_get_image_size(void *obj, const char *name, int search_flags, int *w_out, int *h_out)

  783. {

  784.     void *dst, *target_obj;

  785.     const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);

  786.     if (!o || !target_obj)

  787.         return AVERROR_OPTION_NOT_FOUND;

  788.     if (o->type != AV_OPT_TYPE_IMAGE_SIZE) {

  789.         av_log(obj, AV_LOG_ERROR,

  790.                "The value for option '%s' is not an image size.\n", name);

  791.         return AVERROR(EINVAL);

  792.     }

  793. 

  794.     dst = ((uint8_t*)target_obj) + o->offset;

  795.     if (w_out) *w_out = *(int *)dst;

  796.     if (h_out) *h_out = *((int *)dst+1);

  797.     return 0;

  798. }

  799. 

  800. int av_opt_get_video_rate(void *obj, const char *name, int search_flags, AVRational *out_val)

  801. {

  802.     int64_t intnum = 1;

  803.     double     num = 1;

  804.     int   ret, den = 1;

  805. 

  806.     if ((ret = get_number(obj, name, NULL, &num, &den, &intnum, search_flags)) < 0)

  807.         return ret;

  808. 

  809.     if (num == 1.0 && (int)intnum == intnum)

  810.         *out_val = (AVRational){intnum, den};

  811.     else

  812.         *out_val = av_d2q(num*intnum/den, 1<<24);

  813.     return 0;

  814. }

  815. 

  816. static int get_format(void *obj, const char *name, int search_flags, int *out_fmt,

  817.                       enum AVOptionType type, const char *desc)

  818. {

  819.     void *dst, *target_obj;

  820.     const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);

  821.     if (!o || !target_obj)

  822.         return AVERROR_OPTION_NOT_FOUND;

  823.     if (o->type != type) {

  824.         av_log(obj, AV_LOG_ERROR,

  825.                "The value for option '%s' is not a %s format.\n", desc, name);

  826.         return AVERROR(EINVAL);

  827.     }

  828. 

  829.     dst = ((uint8_t*)target_obj) + o->offset;

  830.     *out_fmt = *(int *)dst;

  831.     return 0;

  832. }

  833. 

  834. int av_opt_get_pixel_fmt(void *obj, const char *name, int search_flags, enum AVPixelFormat *out_fmt)

  835. {

  836.     return get_format(obj, name, search_flags, out_fmt, AV_OPT_TYPE_PIXEL_FMT, "pixel");

  837. }

  838. 

  839. int av_opt_get_sample_fmt(void *obj, const char *name, int search_flags, enum AVSampleFormat *out_fmt)

  840. {

  841.     return get_format(obj, name, search_flags, out_fmt, AV_OPT_TYPE_SAMPLE_FMT, "sample");

  842. }

  843. 

  844. int av_opt_get_channel_layout(void *obj, const char *name, int search_flags, int64_t *cl)

  845. {

  846.     void *dst, *target_obj;

  847.     const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);

  848.     if (!o || !target_obj)

  849.         return AVERROR_OPTION_NOT_FOUND;

  850.     if (o->type != AV_OPT_TYPE_CHANNEL_LAYOUT) {

  851.         av_log(obj, AV_LOG_ERROR,

  852.                "The value for option '%s' is not a channel layout.\n", name);

  853.         return AVERROR(EINVAL);

  854.     }

  855. 

  856.     dst = ((uint8_t*)target_obj) + o->offset;

  857.     *cl = *(int64_t *)dst;

  858.     return 0;

  859. }

  860. 

  861. int av_opt_flag_is_set(void *obj, const char *field_name, const char *flag_name)

  862. {

  863.     const AVOption *field = av_opt_find(obj, field_name, NULL, 0, 0);

  864.     const AVOption *flag  = av_opt_find(obj, flag_name,

  865.                                         field ? field->unit : NULL, 0, 0);

  866.     int64_t res;

  867. 

  868.     if (!field || !flag || flag->type != AV_OPT_TYPE_CONST ||

  869.         av_opt_get_int(obj, field_name, 0, &res) < 0)

  870.         return 0;

  871.     return res & flag->default_val.i64;

  872. }

  873. 

  874. static void log_value(void *av_log_obj, int level, double d)

  875. {

  876.     if      (d == INT_MAX) {

  877.         av_log(av_log_obj, level, "INT_MAX");

  878.     } else if (d == INT_MIN) {

  879.         av_log(av_log_obj, level, "INT_MIN");

  880.     } else if (d == (double)INT64_MAX) {

  881.         av_log(av_log_obj, level, "I64_MAX");

  882.     } else if (d == INT64_MIN) {

  883.         av_log(av_log_obj, level, "I64_MIN");

  884.     } else if (d == FLT_MAX) {

  885.         av_log(av_log_obj, level, "FLT_MAX");

  886.     } else if (d == FLT_MIN) {

  887.         av_log(av_log_obj, level, "FLT_MIN");

  888.     } else {

  889.         av_log(av_log_obj, level, "%g", d);

  890.     }

  891. }

  892. 

  893. static void opt_list(void *obj, void *av_log_obj, const char *unit,

  894.                      int req_flags, int rej_flags)

  895. {

  896.     const AVOption *opt=NULL;

  897.     AVOptionRanges *r;

  898.     int i;

  899. 

  900.     while ((opt = av_opt_next(obj, opt))) {

  901.         if (!(opt->flags & req_flags) || (opt->flags & rej_flags))

  902.             continue;

  903. 

  904.         /* Don't print CONST's on level one.

  905.          * Don't print anything but CONST's on level two.

  906.          * Only print items from the requested unit.

  907.          */

  908.         if (!unit && opt->type==AV_OPT_TYPE_CONST)

  909.             continue;

  910.         else if (unit && opt->type!=AV_OPT_TYPE_CONST)

  911.             continue;

  912.         else if (unit && opt->type==AV_OPT_TYPE_CONST && strcmp(unit, opt->unit))

  913.             continue;

  914.         else if (unit && opt->type == AV_OPT_TYPE_CONST)

  915.             av_log(av_log_obj, AV_LOG_INFO, "     %-15s ", opt->name);

  916.         else

  917.             av_log(av_log_obj, AV_LOG_INFO, "  %s%-17s ",

  918.                    (opt->flags & AV_OPT_FLAG_FILTERING_PARAM) ? "" : "-",

  919.                    opt->name);

  920. 

  921.         switch (opt->type) {

  922.             case AV_OPT_TYPE_FLAGS:

  923.                 av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<flags>");

  924.                 break;

  925.             case AV_OPT_TYPE_INT:

  926.                 av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<int>");

  927.                 break;

  928.             case AV_OPT_TYPE_INT64:

  929.                 av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<int64>");

  930.                 break;

  931.             case AV_OPT_TYPE_DOUBLE:

  932.                 av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<double>");

  933.                 break;

  934.             case AV_OPT_TYPE_FLOAT:

  935.                 av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<float>");

  936.                 break;

  937.             case AV_OPT_TYPE_STRING:

  938.                 av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<string>");

  939.                 break;

  940.             case AV_OPT_TYPE_RATIONAL:

  941.                 av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<rational>");

  942.                 break;

  943.             case AV_OPT_TYPE_BINARY:

  944.                 av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<binary>");

  945.                 break;

  946.             case AV_OPT_TYPE_IMAGE_SIZE:

  947.                 av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<image_size>");

  948.                 break;

  949.             case AV_OPT_TYPE_VIDEO_RATE:

  950.                 av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<video_rate>");

  951.                 break;

  952.             case AV_OPT_TYPE_PIXEL_FMT:

  953.                 av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<pix_fmt>");

  954.                 break;

  955.             case AV_OPT_TYPE_SAMPLE_FMT:

  956.                 av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<sample_fmt>");

  957.                 break;

  958.             case AV_OPT_TYPE_DURATION:

  959.                 av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<duration>");

  960.                 break;

  961.             case AV_OPT_TYPE_COLOR:

  962.                 av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<color>");

  963.                 break;

  964.             case AV_OPT_TYPE_CHANNEL_LAYOUT:

  965.                 av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<channel_layout>");

  966.                 break;

  967.             case AV_OPT_TYPE_CONST:

  968.             default:

  969.                 av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "");

  970.                 break;

  971.         }

  972.         av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_ENCODING_PARAM) ? 'E' : '.');

  973.         av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_DECODING_PARAM) ? 'D' : '.');

  974.         av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_FILTERING_PARAM)? 'F' : '.');

  975.         av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_VIDEO_PARAM   ) ? 'V' : '.');

  976.         av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_AUDIO_PARAM   ) ? 'A' : '.');

  977.         av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_SUBTITLE_PARAM) ? 'S' : '.');

  978. 

  979.         if (opt->help)

  980.             av_log(av_log_obj, AV_LOG_INFO, " %s", opt->help);

  981. 

  982.         if (av_opt_query_ranges(&r, obj, opt->name, AV_OPT_SEARCH_FAKE_OBJ) >= 0) {

  983.             switch (opt->type) {

  984.             case AV_OPT_TYPE_INT:

  985.             case AV_OPT_TYPE_INT64:

  986.             case AV_OPT_TYPE_DOUBLE:

  987.             case AV_OPT_TYPE_FLOAT:

  988.             case AV_OPT_TYPE_RATIONAL:

  989.                 for (i = 0; i < r->nb_ranges; i++) {

  990.                     av_log(av_log_obj, AV_LOG_INFO, " (from ");

  991.                     log_value(av_log_obj, AV_LOG_INFO, r->range[i]->value_min);

  992.                     av_log(av_log_obj, AV_LOG_INFO, " to ");

  993.                     log_value(av_log_obj, AV_LOG_INFO, r->range[i]->value_max);

  994.                     av_log(av_log_obj, AV_LOG_INFO, ")");

  995.                 }

  996.                 break;

  997.             }

  998.             av_opt_freep_ranges(&r);

  999.         }

  1000. 

  1001.         if (opt->type != AV_OPT_TYPE_CONST  &&

  1002.             opt->type != AV_OPT_TYPE_BINARY &&

  1003.                 !((opt->type == AV_OPT_TYPE_COLOR      ||

  1004.                    opt->type == AV_OPT_TYPE_IMAGE_SIZE ||

  1005.                    opt->type == AV_OPT_TYPE_STRING     ||

  1006.                    opt->type == AV_OPT_TYPE_VIDEO_RATE) &&

  1007.                   !opt->default_val.str)) {

  1008.             av_log(av_log_obj, AV_LOG_INFO, " (default ");

  1009.             switch (opt->type) {

  1010.             case AV_OPT_TYPE_FLAGS:

  1011.                 av_log(av_log_obj, AV_LOG_INFO, "%"PRIX64, opt->default_val.i64);

  1012.                 break;

  1013.             case AV_OPT_TYPE_DURATION:

  1014.             case AV_OPT_TYPE_INT:

  1015.             case AV_OPT_TYPE_INT64:

  1016.                 log_value(av_log_obj, AV_LOG_INFO, opt->default_val.i64);

  1017.                 break;

  1018.             case AV_OPT_TYPE_DOUBLE:

  1019.             case AV_OPT_TYPE_FLOAT:

  1020.                 log_value(av_log_obj, AV_LOG_INFO, opt->default_val.dbl);

  1021.                 break;

  1022.             case AV_OPT_TYPE_RATIONAL: {

  1023.                 AVRational q = av_d2q(opt->default_val.dbl, INT_MAX);

  1024.                 av_log(av_log_obj, AV_LOG_INFO, "%d/%d", q.num, q.den); }

  1025.                 break;

  1026.             case AV_OPT_TYPE_PIXEL_FMT:

  1027.                 av_log(av_log_obj, AV_LOG_INFO, "%s", (char *)av_x_if_null(av_get_pix_fmt_name(opt->default_val.i64), "none"));

  1028.                 break;

  1029.             case AV_OPT_TYPE_SAMPLE_FMT:

  1030.                 av_log(av_log_obj, AV_LOG_INFO, "%s", (char *)av_x_if_null(av_get_sample_fmt_name(opt->default_val.i64), "none"));

  1031.                 break;

  1032.             case AV_OPT_TYPE_COLOR:

  1033.             case AV_OPT_TYPE_IMAGE_SIZE:

  1034.             case AV_OPT_TYPE_STRING:

  1035.             case AV_OPT_TYPE_VIDEO_RATE:

  1036.                 av_log(av_log_obj, AV_LOG_INFO, "\"%s\"", opt->default_val.str);

  1037.                 break;

  1038.             case AV_OPT_TYPE_CHANNEL_LAYOUT:

  1039.                 av_log(av_log_obj, AV_LOG_INFO, "0x%"PRIx64, opt->default_val.i64);

  1040.                 break;

  1041.             }

  1042.             av_log(av_log_obj, AV_LOG_INFO, ")");

  1043.         }

  1044. 

  1045.         av_log(av_log_obj, AV_LOG_INFO, "\n");

  1046.         if (opt->unit && opt->type != AV_OPT_TYPE_CONST) {

  1047.             opt_list(obj, av_log_obj, opt->unit, req_flags, rej_flags);

  1048.         }

  1049.     }

  1050. }

  1051. 

  1052. int av_opt_show2(void *obj, void *av_log_obj, int req_flags, int rej_flags)

  1053. {

  1054.     if (!obj)

  1055.         return -1;

  1056. 

  1057.     av_log(av_log_obj, AV_LOG_INFO, "%s AVOptions:\n", (*(AVClass**)obj)->class_name);

  1058. 

  1059.     opt_list(obj, av_log_obj, NULL, req_flags, rej_flags);

  1060. 

  1061.     return 0;

  1062. }

  1063. 

  1064. void av_opt_set_defaults(void *s)

  1065. {

  1066. #if FF_API_OLD_AVOPTIONS

  1067.     av_opt_set_defaults2(s, 0, 0);

  1068. }

  1069. 

  1070. void av_opt_set_defaults2(void *s, int mask, int flags)

  1071. {

  1072. #endif

  1073.     const AVClass *class = *(AVClass **)s;

  1074.     const AVOption *opt = NULL;

  1075.     while ((opt = av_opt_next(s, opt)) != NULL) {

  1076. #if FF_API_OLD_AVOPTIONS

  1077.         if ((opt->flags & mask) != flags)

  1078.             continue;

  1079. #endif

  1080.         switch (opt->type) {

  1081.             case AV_OPT_TYPE_CONST:

  1082.                 /* Nothing to be done here */

  1083.             break;

  1084.             case AV_OPT_TYPE_FLAGS:

  1085.             case AV_OPT_TYPE_INT:

  1086.             case AV_OPT_TYPE_INT64:

  1087.             case AV_OPT_TYPE_DURATION:

  1088.             case AV_OPT_TYPE_CHANNEL_LAYOUT:

  1089.                 av_opt_set_int(s, opt->name, opt->default_val.i64, 0);

  1090.             break;

  1091.             case AV_OPT_TYPE_DOUBLE:

  1092.             case AV_OPT_TYPE_FLOAT: {

  1093.                 double val;

  1094.                 val = opt->default_val.dbl;

  1095.                 av_opt_set_double(s, opt->name, val, 0);

  1096.             }

  1097.             break;

  1098.             case AV_OPT_TYPE_RATIONAL: {

  1099.                 AVRational val;

  1100.                 val = av_d2q(opt->default_val.dbl, INT_MAX);

  1101.                 av_opt_set_q(s, opt->name, val, 0);

  1102.             }

  1103.             break;

  1104.             case AV_OPT_TYPE_COLOR:

  1105.             case AV_OPT_TYPE_STRING:

  1106.             case AV_OPT_TYPE_IMAGE_SIZE:

  1107.             case AV_OPT_TYPE_VIDEO_RATE:

  1108.                 av_opt_set(s, opt->name, opt->default_val.str, 0);

  1109.                 break;

  1110.             case AV_OPT_TYPE_PIXEL_FMT:

  1111. #if LIBAVUTIL_VERSION_MAJOR < 53

  1112.                 if (class->version && class->version < AV_VERSION_INT(52, 10, 100))

  1113.                     av_opt_set(s, opt->name, opt->default_val.str, 0);

  1114.                 else

  1115. #endif

  1116.                     av_opt_set_pixel_fmt(s, opt->name, opt->default_val.i64, 0);

  1117.                 break;

  1118.             case AV_OPT_TYPE_SAMPLE_FMT:

  1119. #if LIBAVUTIL_VERSION_MAJOR < 53

  1120.                 if (class->version && class->version < AV_VERSION_INT(52, 10, 100))

  1121.                     av_opt_set(s, opt->name, opt->default_val.str, 0);

  1122.                 else

  1123. #endif

  1124.                     av_opt_set_sample_fmt(s, opt->name, opt->default_val.i64, 0);

  1125.                 break;

  1126.             case AV_OPT_TYPE_BINARY:

  1127.                 /* Cannot set default for binary */

  1128.             break;

  1129.             default:

  1130.                 av_log(s, AV_LOG_DEBUG, "AVOption type %d of option %s not implemented yet\n", opt->type, opt->name);

  1131.         }

  1132.     }

  1133. }

  1134. 

  1135. /**

  1136.  * Store the value in the field in ctx that is named like key.

  1137.  * ctx must be an AVClass context, storing is done using AVOptions.

  1138.  *

  1139.  * @param buf the string to parse, buf will be updated to point at the

  1140.  * separator just after the parsed key/value pair

  1141.  * @param key_val_sep a 0-terminated list of characters used to

  1142.  * separate key from value

  1143.  * @param pairs_sep a 0-terminated list of characters used to separate

  1144.  * two pairs from each other

  1145.  * @return 0 if the key/value pair has been successfully parsed and

  1146.  * set, or a negative value corresponding to an AVERROR code in case

  1147.  * of error:

  1148.  * AVERROR(EINVAL) if the key/value pair cannot be parsed,

  1149.  * the error code issued by av_opt_set() if the key/value pair

  1150.  * cannot be set

  1151.  */

  1152. static int parse_key_value_pair(void *ctx, const char **buf,

  1153.                                 const char *key_val_sep, const char *pairs_sep)

  1154. {

  1155.     char *key = av_get_token(buf, key_val_sep);

  1156.     char *val;

  1157.     int ret;

  1158. 

  1159.     if (!key)

  1160.         return AVERROR(ENOMEM);

  1161. 

  1162.     if (*key && strspn(*buf, key_val_sep)) {

  1163.         (*buf)++;

  1164.         val = av_get_token(buf, pairs_sep);

  1165.         if (!val) {

  1166.             av_freep(&key);

  1167.             return AVERROR(ENOMEM);

  1168.         }

  1169.     } else {

  1170.         av_log(ctx, AV_LOG_ERROR, "Missing key or no key/value separator found after key '%s'\n", key);

  1171.         av_free(key);

  1172.         return AVERROR(EINVAL);

  1173.     }

  1174. 

  1175.     av_log(ctx, AV_LOG_DEBUG, "Setting entry with key '%s' to value '%s'\n", key, val);

  1176. 

  1177.     ret = av_opt_set(ctx, key, val, AV_OPT_SEARCH_CHILDREN);

  1178.     if (ret == AVERROR_OPTION_NOT_FOUND)

  1179.         av_log(ctx, AV_LOG_ERROR, "Key '%s' not found.\n", key);

  1180. 

  1181.     av_free(key);

  1182.     av_free(val);

  1183.     return ret;

  1184. }

  1185. 

  1186. int av_set_options_string(void *ctx, const char *opts,

  1187.                           const char *key_val_sep, const char *pairs_sep)

  1188. {

  1189.     int ret, count = 0;

  1190. 

  1191.     if (!opts)

  1192.         return 0;

  1193. 

  1194.     while (*opts) {

  1195.         if ((ret = parse_key_value_pair(ctx, &opts, key_val_sep, pairs_sep)) < 0)

  1196.             return ret;

  1197.         count++;

  1198. 

  1199.         if (*opts)

  1200.             opts++;

  1201.     }

  1202. 

  1203.     return count;

  1204. }

  1205. 

  1206. #define WHITESPACES " \n\t"

  1207. 

  1208. static int is_key_char(char c)

  1209. {

  1210.     return (unsigned)((c | 32) - 'a') < 26 ||

  1211.            (unsigned)(c - '0') < 10 ||

  1212.            c == '-' || c == '_' || c == '/' || c == '.';

  1213. }

  1214. 

  1215. /**

  1216.  * Read a key from a string.

  1217.  *

  1218.  * The key consists of is_key_char characters and must be terminated by a

  1219.  * character from the delim string; spaces are ignored.

  1220.  *

  1221.  * @return  0 for success (even with ellipsis), <0 for failure

  1222.  */

  1223. static int get_key(const char **ropts, const char *delim, char **rkey)

  1224. {

  1225.     const char *opts = *ropts;

  1226.     const char *key_start, *key_end;

  1227. 

  1228.     key_start = opts += strspn(opts, WHITESPACES);

  1229.     while (is_key_char(*opts))

  1230.         opts++;

  1231.     key_end = opts;

  1232.     opts += strspn(opts, WHITESPACES);

  1233.     if (!*opts || !strchr(delim, *opts))

  1234.         return AVERROR(EINVAL);

  1235.     opts++;

  1236.     if (!(*rkey = av_malloc(key_end - key_start + 1)))

  1237.         return AVERROR(ENOMEM);

  1238.     memcpy(*rkey, key_start, key_end - key_start);

  1239.     (*rkey)[key_end - key_start] = 0;

  1240.     *ropts = opts;

  1241.     return 0;

  1242. }

  1243. 

  1244. int av_opt_get_key_value(const char **ropts,

  1245.                          const char *key_val_sep, const char *pairs_sep,

  1246.                          unsigned flags,

  1247.                          char **rkey, char **rval)

  1248. {

  1249.     int ret;

  1250.     char *key = NULL, *val;

  1251.     const char *opts = *ropts;

  1252. 

  1253.     if ((ret = get_key(&opts, key_val_sep, &key)) < 0 &&

  1254.         !(flags & AV_OPT_FLAG_IMPLICIT_KEY))

  1255.         return AVERROR(EINVAL);

  1256.     if (!(val = av_get_token(&opts, pairs_sep))) {

  1257.         av_free(key);

  1258.         return AVERROR(ENOMEM);

  1259.     }

  1260.     *ropts = opts;

  1261.     *rkey  = key;

  1262.     *rval  = val;

  1263.     return 0;

  1264. }

  1265. 

  1266. int av_opt_set_from_string(void *ctx, const char *opts,

  1267.                            const char *const *shorthand,

  1268.                            const char *key_val_sep, const char *pairs_sep)

  1269. {

  1270.     int ret, count = 0;

  1271.     const char *dummy_shorthand = NULL;

  1272.     char *av_uninit(parsed_key), *av_uninit(value);

  1273.     const char *key;

  1274. 

  1275.     if (!opts)

  1276.         return 0;

  1277.     if (!shorthand)

  1278.         shorthand = &dummy_shorthand;

  1279. 

  1280.     while (*opts) {

  1281.         ret = av_opt_get_key_value(&opts, key_val_sep, pairs_sep,

  1282.                                    *shorthand ? AV_OPT_FLAG_IMPLICIT_KEY : 0,

  1283.                                    &parsed_key, &value);

  1284.         if (ret < 0) {

  1285.             if (ret == AVERROR(EINVAL))

  1286.                 av_log(ctx, AV_LOG_ERROR, "No option name near '%s'\n", opts);

  1287.             else

  1288.                 av_log(ctx, AV_LOG_ERROR, "Unable to parse '%s': %s\n", opts,

  1289.                        av_err2str(ret));

  1290.             return ret;

  1291.         }

  1292.         if (*opts)

  1293.             opts++;

  1294.         if (parsed_key) {

  1295.             key = parsed_key;

  1296.             while (*shorthand) /* discard all remaining shorthand */

  1297.                 shorthand++;

  1298.         } else {

  1299.             key = *(shorthand++);

  1300.         }

  1301. 

  1302.         av_log(ctx, AV_LOG_DEBUG, "Setting '%s' to value '%s'\n", key, value);

  1303.         if ((ret = av_opt_set(ctx, key, value, 0)) < 0) {

  1304.             if (ret == AVERROR_OPTION_NOT_FOUND)

  1305.                 av_log(ctx, AV_LOG_ERROR, "Option '%s' not found\n", key);

  1306.             av_free(value);

  1307.             av_free(parsed_key);

  1308.             return ret;

  1309.         }

  1310. 

  1311.         av_free(value);

  1312.         av_free(parsed_key);

  1313.         count++;

  1314.     }

  1315.     return count;

  1316. }

  1317. 

  1318. void av_opt_free(void *obj)

  1319. {

  1320.     const AVOption *o = NULL;

  1321.     while ((o = av_opt_next(obj, o)))

  1322.         if (o->type == AV_OPT_TYPE_STRING || o->type == AV_OPT_TYPE_BINARY)

  1323.             av_freep((uint8_t *)obj + o->offset);

  1324. }

  1325. 

  1326. int av_opt_set_dict(void *obj, AVDictionary **options)

  1327. {

  1328.     AVDictionaryEntry *t = NULL;

  1329.     AVDictionary    *tmp = NULL;

  1330.     int ret = 0;

  1331. 

  1332.     while ((t = av_dict_get(*options, "", t, AV_DICT_IGNORE_SUFFIX))) {

  1333.         ret = av_opt_set(obj, t->key, t->value, 0);

  1334.         if (ret == AVERROR_OPTION_NOT_FOUND)

  1335.             av_dict_set(&tmp, t->key, t->value, 0);

  1336.         else if (ret < 0) {

  1337.             av_log(obj, AV_LOG_ERROR, "Error setting option %s to value %s.\n", t->key, t->value);

  1338.             break;

  1339.         }

  1340.         ret = 0;

  1341.     }

  1342.     av_dict_free(options);

  1343.     *options = tmp;

  1344.     return ret;

  1345. }

  1346. 

  1347. const AVOption *av_opt_find(void *obj, const char *name, const char *unit,

  1348.                             int opt_flags, int search_flags)

  1349. {

  1350.     return av_opt_find2(obj, name, unit, opt_flags, search_flags, NULL);

  1351. }

  1352. 

  1353. const AVOption *av_opt_find2(void *obj, const char *name, const char *unit,

  1354.                              int opt_flags, int search_flags, void **target_obj)

  1355. {

  1356.     const AVClass  *c;

  1357.     const AVOption *o = NULL;

  1358. 

  1359.     if(!obj)

  1360.         return NULL;

  1361. 

  1362.     c= *(AVClass**)obj;

  1363. 

  1364.     if (!c)

  1365.         return NULL;

  1366. 

  1367.     if (search_flags & AV_OPT_SEARCH_CHILDREN) {

  1368.         if (search_flags & AV_OPT_SEARCH_FAKE_OBJ) {

  1369.             const AVClass *child = NULL;

  1370.             while (child = av_opt_child_class_next(c, child))

  1371.                 if (o = av_opt_find2(&child, name, unit, opt_flags, search_flags, NULL))

  1372.                     return o;

  1373.         } else {

  1374.             void *child = NULL;

  1375.             while (child = av_opt_child_next(obj, child))

  1376.                 if (o = av_opt_find2(child, name, unit, opt_flags, search_flags, target_obj))

  1377.                     return o;

  1378.         }

  1379.     }

  1380. 

  1381.     while (o = av_opt_next(obj, o)) {

  1382.         if (!strcmp(o->name, name) && (o->flags & opt_flags) == opt_flags &&

  1383.             ((!unit && o->type != AV_OPT_TYPE_CONST) ||

  1384.              (unit  && o->type == AV_OPT_TYPE_CONST && o->unit && !strcmp(o->unit, unit)))) {

  1385.             if (target_obj) {

  1386.                 if (!(search_flags & AV_OPT_SEARCH_FAKE_OBJ))

  1387.                     *target_obj = obj;

  1388.                 else

  1389.                     *target_obj = NULL;

  1390.             }

  1391.             return o;

  1392.         }

  1393.     }

  1394.     return NULL;

  1395. }

  1396. 

  1397. void *av_opt_child_next(void *obj, void *prev)

  1398. {

  1399.     const AVClass *c = *(AVClass**)obj;

  1400.     if (c->child_next)

  1401.         return c->child_next(obj, prev);

  1402.     return NULL;

  1403. }

  1404. 

  1405. const AVClass *av_opt_child_class_next(const AVClass *parent, const AVClass *prev)

  1406. {

  1407.     if (parent->child_class_next)

  1408.         return parent->child_class_next(prev);

  1409.     return NULL;

  1410. }

  1411. 

  1412. void *av_opt_ptr(const AVClass *class, void *obj, const char *name)

  1413. {

  1414.     const AVOption *opt= av_opt_find2(&class, name, NULL, 0, AV_OPT_SEARCH_FAKE_OBJ, NULL);

  1415.     if(!opt)

  1416.         return NULL;

  1417.     return (uint8_t*)obj + opt->offset;

  1418. }

  1419. 

  1420. int av_opt_query_ranges(AVOptionRanges **ranges_arg, void *obj, const char *key, int flags)

  1421. {

  1422.     const AVClass *c = *(AVClass**)obj;

  1423.     int (*callback)(AVOptionRanges **, void *obj, const char *key, int flags) = NULL;

  1424. 

  1425.     if (c->version > (52 << 16 | 11 << 8))

  1426.         callback = c->query_ranges;

  1427. 

  1428.     if (!callback)

  1429.         callback = av_opt_query_ranges_default;

  1430. 

  1431.     return callback(ranges_arg, obj, key, flags);

  1432. }

  1433. 

  1434. int av_opt_query_ranges_default(AVOptionRanges **ranges_arg, void *obj, const char *key, int flags)

  1435. {

  1436.     AVOptionRanges *ranges = av_mallocz(sizeof(*ranges));

  1437.     AVOptionRange **range_array = av_mallocz(sizeof(void*));

  1438.     AVOptionRange *range = av_mallocz(sizeof(*range));

  1439.     const AVOption *field = av_opt_find(obj, key, NULL, 0, flags);

  1440.     int ret;

  1441. 

  1442.     *ranges_arg = NULL;

  1443. 

  1444.     if (!ranges || !range || !range_array || !field) {

  1445.         ret = AVERROR(ENOMEM);

  1446.         goto fail;

  1447.     }

  1448. 

  1449.     ranges->range = range_array;

  1450.     ranges->range[0] = range;

  1451.     ranges->nb_ranges = 1;

  1452.     range->is_range = 1;

  1453.     range->value_min = field->min;

  1454.     range->value_max = field->max;

  1455. 

  1456.     switch (field->type) {

  1457.     case AV_OPT_TYPE_INT:

  1458.     case AV_OPT_TYPE_INT64:

  1459.     case AV_OPT_TYPE_PIXEL_FMT:

  1460.     case AV_OPT_TYPE_SAMPLE_FMT:

  1461.     case AV_OPT_TYPE_FLOAT:

  1462.     case AV_OPT_TYPE_DOUBLE:

  1463.     case AV_OPT_TYPE_DURATION:

  1464.     case AV_OPT_TYPE_COLOR:

  1465.     case AV_OPT_TYPE_CHANNEL_LAYOUT:

  1466.         break;

  1467.     case AV_OPT_TYPE_STRING:

  1468.         range->component_min = 0;

  1469.         range->component_max = 0x10FFFF; // max unicode value

  1470.         range->value_min = -1;

  1471.         range->value_max = INT_MAX;

  1472.         break;

  1473.     case AV_OPT_TYPE_RATIONAL:

  1474.         range->component_min = INT_MIN;

  1475.         range->component_max = INT_MAX;

  1476.         break;

  1477.     case AV_OPT_TYPE_IMAGE_SIZE:

  1478.         range->component_min = 0;

  1479.         range->component_max = INT_MAX/128/8;

  1480.         range->value_min = 0;

  1481.         range->value_max = INT_MAX/8;

  1482.         break;

  1483.     case AV_OPT_TYPE_VIDEO_RATE:

  1484.         range->component_min = 1;

  1485.         range->component_max = INT_MAX;

  1486.         range->value_min = 1;

  1487.         range->value_max = INT_MAX;

  1488.         break;

  1489.     default:

  1490.         ret = AVERROR(ENOSYS);

  1491.         goto fail;

  1492.     }

  1493. 

  1494.     *ranges_arg = ranges;

  1495.     return 0;

  1496. fail:

  1497.     av_free(ranges);

  1498.     av_free(range);

  1499.     av_free(range_array);

  1500.     return ret;

  1501. }

  1502. 

  1503. void av_opt_freep_ranges(AVOptionRanges **rangesp)

  1504. {

  1505.     int i;

  1506.     AVOptionRanges *ranges = *rangesp;

  1507. 

  1508.     for (i = 0; i < ranges->nb_ranges; i++) {

  1509.         AVOptionRange *range = ranges->range[i];

  1510.         av_freep(&range->str);

  1511.         av_freep(&ranges->range[i]);

  1512.     }

  1513.     av_freep(&ranges->range);

  1514.     av_freep(rangesp);

  1515. }

  1516. 

  1517. #ifdef TEST

  1518. 

  1519. typedef struct TestContext

  1520. {

  1521.     const AVClass *class;

  1522.     int num;

  1523.     int toggle;

  1524.     char *string;

  1525.     int flags;

  1526.     AVRational rational;

  1527.     AVRational video_rate;

  1528.     int w, h;

  1529.     enum AVPixelFormat pix_fmt;

  1530.     enum AVSampleFormat sample_fmt;

  1531.     int64_t duration;

  1532.     uint8_t color[4];

  1533.     int64_t channel_layout;

  1534. } TestContext;

  1535. 

  1536. #define OFFSET(x) offsetof(TestContext, x)

  1537. 

  1538. #define TEST_FLAG_COOL 01

  1539. #define TEST_FLAG_LAME 02

  1540. #define TEST_FLAG_MU   04

  1541. 

  1542. static const AVOption test_options[]= {

  1543. {"num",      "set num",        OFFSET(num),      AV_OPT_TYPE_INT,      {.i64 = 0},       0,        100                 },

  1544. {"toggle",   "set toggle",     OFFSET(toggle),   AV_OPT_TYPE_INT,      {.i64 = 0},       0,        1                   },

  1545. {"rational", "set rational",   OFFSET(rational), AV_OPT_TYPE_RATIONAL, {.dbl = 0},       0,        10                  },

  1546. {"string",   "set string",     OFFSET(string),   AV_OPT_TYPE_STRING,   {.str = "default"}, CHAR_MIN, CHAR_MAX          },

  1547. {"flags",    "set flags",      OFFSET(flags),    AV_OPT_TYPE_FLAGS,    {.i64 = 0},       0,        INT_MAX, 0, "flags" },

  1548. {"cool",     "set cool flag ", 0,                AV_OPT_TYPE_CONST,    {.i64 = TEST_FLAG_COOL}, INT_MIN,  INT_MAX, 0, "flags" },

  1549. {"lame",     "set lame flag ", 0,                AV_OPT_TYPE_CONST,    {.i64 = TEST_FLAG_LAME}, INT_MIN,  INT_MAX, 0, "flags" },

  1550. {"mu",       "set mu flag ",   0,                AV_OPT_TYPE_CONST,    {.i64 = TEST_FLAG_MU},   INT_MIN,  INT_MAX, 0, "flags" },

  1551. {"size",     "set size",       OFFSET(w),        AV_OPT_TYPE_IMAGE_SIZE,{0},             0,        0                   },

  1552. {"pix_fmt",  "set pixfmt",     OFFSET(pix_fmt),  AV_OPT_TYPE_PIXEL_FMT, {.i64 = AV_PIX_FMT_NONE}, -1, AV_PIX_FMT_NB-1},

  1553. {"sample_fmt", "set samplefmt", OFFSET(sample_fmt), AV_OPT_TYPE_SAMPLE_FMT, {.i64 = AV_SAMPLE_FMT_NONE}, -1, AV_SAMPLE_FMT_NB-1},

  1554. {"video_rate", "set videorate", OFFSET(video_rate), AV_OPT_TYPE_VIDEO_RATE,  {.str = "25"}, 0,     0                   },

  1555. {"duration", "set duration",   OFFSET(duration), AV_OPT_TYPE_DURATION, {.i64 = 0}, 0, INT64_MAX},

  1556. {"color", "set color",   OFFSET(color), AV_OPT_TYPE_COLOR, {.str = "pink"}, 0, 0},

  1557. {"cl", "set channel layout", OFFSET(channel_layout), AV_OPT_TYPE_CHANNEL_LAYOUT, {.i64 = AV_CH_LAYOUT_HEXAGONAL}, 0, INT64_MAX},

  1558. {NULL},

  1559. };

  1560. 

  1561. static const char *test_get_name(void *ctx)

  1562. {

  1563.     return "test";

  1564. }

  1565. 

  1566. static const AVClass test_class = {

  1567.     "TestContext",

  1568.     test_get_name,

  1569.     test_options

  1570. };

  1571. 

  1572. int main(void)

  1573. {

  1574.     int i;

  1575. 

  1576.     printf("\nTesting av_set_options_string()\n");

  1577.     {

  1578.         TestContext test_ctx = { 0 };

  1579.         static const char * const options[] = {

  1580.             "",

  1581.             ":",

  1582.             "=",

  1583.             "foo=:",

  1584.             ":=foo",

  1585.             "=foo",

  1586.             "foo=",

  1587.             "foo",

  1588.             "foo=val",

  1589.             "foo==val",

  1590.             "toggle=:",

  1591.             "string=:",

  1592.             "toggle=1 : foo",

  1593.             "toggle=100",

  1594.             "toggle==1",

  1595.             "flags=+mu-lame : num=42: toggle=0",

  1596.             "num=42 : string=blahblah",

  1597.             "rational=0 : rational=1/2 : rational=1/-1",

  1598.             "rational=-1/0",

  1599.             "size=1024x768",

  1600.             "size=pal",

  1601.             "size=bogus",

  1602.             "pix_fmt=yuv420p",

  1603.             "pix_fmt=2",

  1604.             "pix_fmt=bogus",

  1605.             "sample_fmt=s16",

  1606.             "sample_fmt=2",

  1607.             "sample_fmt=bogus",

  1608.             "video_rate=pal",

  1609.             "video_rate=25",

  1610.             "video_rate=30000/1001",

  1611.             "video_rate=30/1.001",

  1612.             "video_rate=bogus",

  1613.             "duration=bogus",

  1614.             "duration=123.45",

  1615.             "duration=1\\:23\\:45.67",

  1616.             "color=blue",

  1617.             "color=0x223300",

  1618.             "color=0x42FF07AA",

  1619.             "cl=stereo+downmix",

  1620.             "cl=foo",

  1621.         };

  1622. 

  1623.         test_ctx.class = &test_class;

  1624.         av_opt_set_defaults(&test_ctx);

  1625. 

  1626.         av_log_set_level(AV_LOG_DEBUG);

  1627. 

  1628.         for (i=0; i < FF_ARRAY_ELEMS(options); i++) {

  1629.             av_log(&test_ctx, AV_LOG_DEBUG, "Setting options string '%s'\n", options[i]);

  1630.             if (av_set_options_string(&test_ctx, options[i], "=", ":") < 0)

  1631.                 av_log(&test_ctx, AV_LOG_ERROR, "Error setting options string: '%s'\n", options[i]);

  1632.             printf("\n");

  1633.         }

  1634.         av_opt_free(&test_ctx);

  1635.     }

  1636. 

  1637.     printf("\nTesting av_opt_set_from_string()\n");

  1638.     {

  1639.         TestContext test_ctx = { 0 };

  1640.         static const char * const options[] = {

  1641.             "",

  1642.             "5",

  1643.             "5:hello",

  1644.             "5:hello:size=pal",

  1645.             "5:size=pal:hello",

  1646.             ":",

  1647.             "=",

  1648.             " 5 : hello : size = pal ",

  1649.             "a_very_long_option_name_that_will_need_to_be_ellipsized_around_here=42"

  1650.         };

  1651.         static const char * const shorthand[] = { "num", "string", NULL };

  1652. 

  1653.         test_ctx.class = &test_class;

  1654.         av_opt_set_defaults(&test_ctx);

  1655. 

  1656.         av_log_set_level(AV_LOG_DEBUG);

  1657. 

  1658.         for (i=0; i < FF_ARRAY_ELEMS(options); i++) {

  1659.             av_log(&test_ctx, AV_LOG_DEBUG, "Setting options string '%s'\n", options[i]);

  1660.             if (av_opt_set_from_string(&test_ctx, options[i], shorthand, "=", ":") < 0)

  1661.                 av_log(&test_ctx, AV_LOG_ERROR, "Error setting options string: '%s'\n", options[i]);

  1662.             printf("\n");

  1663.         }

  1664.         av_opt_free(&test_ctx);

  1665.     }

  1666. 

  1667.     return 0;

  1668. }

  1669. 

  1670. #endif