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FFmpeg/libavutil/opt.c

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  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->type != AV_OPT_TYPE_FLAGS &&

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

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

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

  100.         return AVERROR(ERANGE);

  101.     }

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

  103.         double d = num*intnum/den;

  104.         if (d < -1.5 || d > 0xFFFFFFFF+0.5 || (llrint(d*256) & 255)) {

  105.             av_log(obj, AV_LOG_ERROR,

  106.                    "Value %f for parameter '%s' is not a valid set of 32bit integer flags\n",

  107.                    num*intnum/den, o->name);

  108.             return AVERROR(ERANGE);

  109.         }

  110.     }

  111. 

  112.     switch (o->type) {

  113.     case AV_OPT_TYPE_FLAGS:

  114.     case AV_OPT_TYPE_PIXEL_FMT:

  115.     case AV_OPT_TYPE_SAMPLE_FMT:

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

  117.     case AV_OPT_TYPE_DURATION:

  118.     case AV_OPT_TYPE_CHANNEL_LAYOUT:

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

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

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

  122.     case AV_OPT_TYPE_RATIONAL:

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

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

  125.         break;

  126.     default:

  127.         return AVERROR(EINVAL);

  128.     }

  129.     return 0;

  130. }

  131. 

  132. static const double const_values[] = {

  133.     M_PI,

  134.     M_E,

  135.     FF_QP2LAMBDA,

  136.     0

  137. };

  138. 

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

  140.     "PI",

  141.     "E",

  142.     "QP2LAMBDA",

  143.     0

  144. };

  145. 

  146. static int hexchar2int(char c) {

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

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

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

  150.     return -1;

  151. }

  152. 

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

  154. {

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

  156.     uint8_t *bin, *ptr;

  157.     int len = strlen(val);

  158. 

  159.     av_freep(dst);

  160.     *lendst = 0;

  161. 

  162.     if (len & 1)

  163.         return AVERROR(EINVAL);

  164.     len /= 2;

  165. 

  166.     ptr = bin = av_malloc(len);

  167.     while (*val) {

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

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

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

  171.             av_free(bin);

  172.             return AVERROR(EINVAL);

  173.         }

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

  175.     }

  176.     *dst = bin;

  177.     *lendst = len;

  178. 

  179.     return 0;

  180. }

  181. 

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

  183. {

  184.     av_freep(dst);

  185.     *dst = av_strdup(val);

  186.     return 0;

  187. }

  188. 

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

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

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

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

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

  194. 

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

  196. {

  197.     int ret = 0, notfirst = 0;

  198.     for (;;) {

  199.         int i, den = 1;

  200.         char buf[256];

  201.         int cmd = 0;

  202.         double d, num = 1;

  203.         int64_t intnum = 1;

  204. 

  205.         i = 0;

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

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

  208.                 cmd = *(val++);

  209.             else if (!notfirst)

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

  211.         }

  212. 

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

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

  215.         buf[i] = 0;

  216. 

  217.         {

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

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

  220.                 d = DEFAULT_NUMVAL(o_named);

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

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

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

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

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

  226.             else {

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

  228.                 if (res < 0) {

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

  230.                     return res;

  231.                 }

  232.             }

  233.         }

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

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

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

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

  238.         } else {

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

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

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

  242.         }

  243. 

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

  245.             return ret;

  246.         val += i;

  247.         if (!*val)

  248.             return 0;

  249.         notfirst = 1;

  250.     }

  251. 

  252.     return 0;

  253. }

  254. 

  255. static int set_string_image_size(void *obj, const AVOption *o, const char *val, int *dst)

  256. {

  257.     int ret;

  258. 

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

  260.         dst[0] =

  261.         dst[1] = 0;

  262.         return 0;

  263.     }

  264.     ret = av_parse_video_size(dst, dst + 1, val);

  265.     if (ret < 0)

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

  267.     return ret;

  268. }

  269. 

  270. static int set_string_video_rate(void *obj, const AVOption *o, const char *val, AVRational *dst)

  271. {

  272.     int ret;

  273.     if (!val) {

  274.         ret = AVERROR(EINVAL);

  275.     } else {

  276.         ret = av_parse_video_rate(dst, val);

  277.     }

  278.     if (ret < 0)

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

  280.     return ret;

  281. }

  282. 

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

  284. {

  285.     int ret;

  286. 

  287.     if (!val) {

  288.         return 0;

  289.     } else {

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

  291.         if (ret < 0)

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

  293.         return ret;

  294.     }

  295.     return 0;

  296. }

  297. 

  298. static int set_string_fmt(void *obj, const AVOption *o, const char *val, uint8_t *dst,

  299.                           int fmt_nb, int ((*get_fmt)(const char *)), const char *desc)

  300. {

  301.     int fmt, min, max;

  302. 

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

  304.         fmt = -1;

  305.     } else {

  306.         fmt = get_fmt(val);

  307.         if (fmt == -1) {

  308.             char *tail;

  309.             fmt = strtol(val, &tail, 0);

  310.             if (*tail || (unsigned)fmt >= fmt_nb) {

  311.                 av_log(obj, AV_LOG_ERROR,

  312.                        "Unable to parse option value \"%s\" as %s\n", val, desc);

  313.                 return AVERROR(EINVAL);

  314.             }

  315.         }

  316.     }

  317. 

  318.     min = FFMAX(o->min, -1);

  319.     max = FFMIN(o->max, fmt_nb-1);

  320. 

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

  322.         av_log(obj, AV_LOG_ERROR,

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

  324.                fmt, o->name, desc, min, max);

  325.         return AVERROR(ERANGE);

  326.     }

  327. 

  328.     *(int *)dst = fmt;

  329.     return 0;

  330. }

  331. 

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

  333. {

  334.     return set_string_fmt(obj, o, val, dst,

  335.                           AV_PIX_FMT_NB, av_get_pix_fmt, "pixel format");

  336. }

  337. 

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

  339. {

  340.     return set_string_fmt(obj, o, val, dst,

  341.                           AV_SAMPLE_FMT_NB, av_get_sample_fmt, "sample format");

  342. }

  343. 

  344. #if FF_API_OLD_AVOPTIONS

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

  346. {

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

  348.     if (o_out)

  349.         *o_out = o;

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

  351. }

  352. #endif

  353. 

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

  355. {

  356.     int ret = 0;

  357.     void *dst, *target_obj;

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

  359.     if (!o || !target_obj)

  360.         return AVERROR_OPTION_NOT_FOUND;

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

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

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

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

  365.                  o->type != AV_OPT_TYPE_CHANNEL_LAYOUT))

  366.         return AVERROR(EINVAL);

  367. 

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

  369.     switch (o->type) {

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

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

  372.     case AV_OPT_TYPE_FLAGS:

  373.     case AV_OPT_TYPE_INT:

  374.     case AV_OPT_TYPE_INT64:

  375.     case AV_OPT_TYPE_FLOAT:

  376.     case AV_OPT_TYPE_DOUBLE:

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

  378.     case AV_OPT_TYPE_IMAGE_SIZE: return set_string_image_size(obj, o, val, dst);

  379.     case AV_OPT_TYPE_VIDEO_RATE: return set_string_video_rate(obj, o, val, dst);

  380.     case AV_OPT_TYPE_PIXEL_FMT:  return set_string_pixel_fmt(obj, o, val, dst);

  381.     case AV_OPT_TYPE_SAMPLE_FMT: return set_string_sample_fmt(obj, o, val, dst);

  382.     case AV_OPT_TYPE_DURATION:

  383.         if (!val) {

  384.             *(int64_t *)dst = 0;

  385.             return 0;

  386.         } else {

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

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

  389.             return ret;

  390.         }

  391.         break;

  392.     case AV_OPT_TYPE_COLOR:      return set_string_color(obj, o, val, dst);

  393.     case AV_OPT_TYPE_CHANNEL_LAYOUT:

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

  395.             *(int64_t *)dst = 0;

  396.         } else {

  397. #if FF_API_GET_CHANNEL_LAYOUT_COMPAT

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

  399. #else

  400.             int64_t cl = av_get_channel_layout(val);

  401. #endif

  402.             if (!cl) {

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

  404.                 ret = AVERROR(EINVAL);

  405.             }

  406.             *(int64_t *)dst = cl;

  407.             return ret;

  408.         }

  409.         break;

  410.     }

  411. 

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

  413.     return AVERROR(EINVAL);

  414. }

  415. 

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

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

  418.     {\

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

  420.             return AVERROR(EINVAL);\

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

  422.     }

  423. 

  424. OPT_EVAL_NUMBER(flags,  AV_OPT_TYPE_FLAGS,    int)

  425. OPT_EVAL_NUMBER(int,    AV_OPT_TYPE_INT,      int)

  426. OPT_EVAL_NUMBER(int64,  AV_OPT_TYPE_INT64,    int64_t)

  427. OPT_EVAL_NUMBER(float,  AV_OPT_TYPE_FLOAT,    float)

  428. OPT_EVAL_NUMBER(double, AV_OPT_TYPE_DOUBLE,   double)

  429. OPT_EVAL_NUMBER(q,      AV_OPT_TYPE_RATIONAL, AVRational)

  430. 

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

  432.                                   int search_flags)

  433. {

  434.     void *dst, *target_obj;

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

  436. 

  437.     if (!o || !target_obj)

  438.         return AVERROR_OPTION_NOT_FOUND;

  439. 

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

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

  442. }

  443. 

  444. #if FF_API_OLD_AVOPTIONS

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

  446. {

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

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

  449.         return NULL;

  450.     return o;

  451. }

  452. 

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

  454. {

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

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

  457.         return NULL;

  458.     return o;

  459. }

  460. 

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

  462. {

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

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

  465.         return NULL;

  466.     return o;

  467. }

  468. #endif

  469. 

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

  471. {

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

  473. }

  474. 

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

  476. {

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

  478. }

  479. 

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

  481. {

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

  483. }

  484. 

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

  486. {

  487.     void *target_obj;

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

  489.     uint8_t *ptr;

  490.     uint8_t **dst;

  491.     int *lendst;

  492. 

  493.     if (!o || !target_obj)

  494.         return AVERROR_OPTION_NOT_FOUND;

  495. 

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

  497.         return AVERROR(EINVAL);

  498. 

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

  500.     if (len && !ptr)

  501.         return AVERROR(ENOMEM);

  502. 

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

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

  505. 

  506.     av_free(*dst);

  507.     *dst = ptr;

  508.     *lendst = len;

  509.     if (len)

  510.         memcpy(ptr, val, len);

  511. 

  512.     return 0;

  513. }

  514. 

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

  516. {

  517.     void *target_obj;

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

  519. 

  520.     if (!o || !target_obj)

  521.         return AVERROR_OPTION_NOT_FOUND;

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

  523.         av_log(obj, AV_LOG_ERROR,

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

  525.         return AVERROR(EINVAL);

  526.     }

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

  528.         av_log(obj, AV_LOG_ERROR,

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

  530.         return AVERROR(EINVAL);

  531.     }

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

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

  534.     return 0;

  535. }

  536. 

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

  538. {

  539.     void *target_obj;

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

  541. 

  542.     if (!o || !target_obj)

  543.         return AVERROR_OPTION_NOT_FOUND;

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

  545.         av_log(obj, AV_LOG_ERROR,

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

  547.         return AVERROR(EINVAL);

  548.     }

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

  550.         return AVERROR(EINVAL);

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

  552. }

  553. 

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

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

  556. {

  557.     void *target_obj;

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

  559.                                      search_flags, &target_obj);

  560.     int min, max;

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

  562. 

  563.     if (!o || !target_obj)

  564.         return AVERROR_OPTION_NOT_FOUND;

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

  566.         av_log(obj, AV_LOG_ERROR,

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

  568.         return AVERROR(EINVAL);

  569.     }

  570. 

  571. #if LIBAVUTIL_VERSION_MAJOR < 54

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

  573.         min = -1;

  574.         max = nb_fmts-1;

  575.     } else

  576. #endif

  577.     {

  578.         min = FFMAX(o->min, -1);

  579.         max = FFMIN(o->max, nb_fmts-1);

  580.     }

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

  582.         av_log(obj, AV_LOG_ERROR,

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

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

  585.         return AVERROR(ERANGE);

  586.     }

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

  588.     return 0;

  589. }

  590. 

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

  592. {

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

  594. }

  595. 

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

  597. {

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

  599. }

  600. 

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

  602. {

  603.     void *target_obj;

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

  605. 

  606.     if (!o || !target_obj)

  607.         return AVERROR_OPTION_NOT_FOUND;

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

  609.         av_log(obj, AV_LOG_ERROR,

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

  611.         return AVERROR(EINVAL);

  612.     }

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

  614.     return 0;

  615. }

  616. 

  617. #if FF_API_OLD_AVOPTIONS

  618. /**

  619.  *

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

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

  622.  */

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

  624. {

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

  626.     void *dst;

  627.     uint8_t *bin;

  628.     int len, i;

  629.     if (!o)

  630.         return NULL;

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

  632.         return NULL;

  633. 

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

  635.     if (o_out) *o_out= o;

  636. 

  637.     switch (o->type) {

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

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

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

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

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

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

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

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

  646.     case AV_OPT_TYPE_BINARY:

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

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

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

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

  651.         break;

  652.     default: return NULL;

  653.     }

  654.     return buf;

  655. }

  656. #endif

  657. 

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

  659. {

  660.     void *dst, *target_obj;

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

  662.     uint8_t *bin, buf[128];

  663.     int len, i, ret;

  664.     int64_t i64;

  665. 

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

  667.         return AVERROR_OPTION_NOT_FOUND;

  668. 

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

  670. 

  671.     buf[0] = 0;

  672.     switch (o->type) {

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

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

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

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

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

  678.     case AV_OPT_TYPE_VIDEO_RATE:

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

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

  681.     case AV_OPT_TYPE_STRING:

  682.         if (*(uint8_t**)dst)

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

  684.         else

  685.             *out_val = av_strdup("");

  686.         return 0;

  687.     case AV_OPT_TYPE_BINARY:

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

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

  690.             return AVERROR(EINVAL);

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

  692.             return AVERROR(ENOMEM);

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

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

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

  696.         return 0;

  697.     case AV_OPT_TYPE_IMAGE_SIZE:

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

  699.         break;

  700.     case AV_OPT_TYPE_PIXEL_FMT:

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

  702.         break;

  703.     case AV_OPT_TYPE_SAMPLE_FMT:

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

  705.         break;

  706.     case AV_OPT_TYPE_DURATION:

  707.         i64 = *(int64_t *)dst;

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

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

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

  711.         break;

  712.     case AV_OPT_TYPE_COLOR:

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

  714.         break;

  715.     case AV_OPT_TYPE_CHANNEL_LAYOUT:

  716.         i64 = *(int64_t *)dst;

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

  718.         break;

  719.     default:

  720.         return AVERROR(EINVAL);

  721.     }

  722. 

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

  724.         return AVERROR(EINVAL);

  725.     *out_val = av_strdup(buf);

  726.     return 0;

  727. }

  728. 

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

  730.                       int search_flags)

  731. {

  732.     void *dst, *target_obj;

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

  734.     if (!o || !target_obj)

  735.         goto error;

  736. 

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

  738. 

  739.     if (o_out) *o_out= o;

  740. 

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

  742. 

  743. error:

  744.     *den=*intnum=0;

  745.     return -1;

  746. }

  747. 

  748. #if FF_API_OLD_AVOPTIONS

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

  750. {

  751.     int64_t intnum=1;

  752.     double num=1;

  753.     int den=1;

  754. 

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

  756.         return NAN;

  757.     return num*intnum/den;

  758. }

  759. 

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

  761. {

  762.     int64_t intnum=1;

  763.     double num=1;

  764.     int den=1;

  765. 

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

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

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

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

  770.     else

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

  772. }

  773. 

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

  775. {

  776.     int64_t intnum=1;

  777.     double num=1;

  778.     int den=1;

  779. 

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

  781.         return -1;

  782.     return num*intnum/den;

  783. }

  784. #endif

  785. 

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

  787. {

  788.     int64_t intnum = 1;

  789.     double     num = 1;

  790.     int   ret, den = 1;

  791. 

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

  793.         return ret;

  794.     *out_val = num*intnum/den;

  795.     return 0;

  796. }

  797. 

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

  799. {

  800.     int64_t intnum = 1;

  801.     double     num = 1;

  802.     int   ret, den = 1;

  803. 

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

  805.         return ret;

  806.     *out_val = num*intnum/den;

  807.     return 0;

  808. }

  809. 

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

  811. {

  812.     int64_t intnum = 1;

  813.     double     num = 1;

  814.     int   ret, den = 1;

  815. 

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

  817.         return ret;

  818. 

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

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

  821.     else

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

  823.     return 0;

  824. }

  825. 

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

  827. {

  828.     void *dst, *target_obj;

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

  830.     if (!o || !target_obj)

  831.         return AVERROR_OPTION_NOT_FOUND;

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

  833.         av_log(obj, AV_LOG_ERROR,

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

  835.         return AVERROR(EINVAL);

  836.     }

  837. 

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

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

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

  841.     return 0;

  842. }

  843. 

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

  845. {

  846.     int64_t intnum = 1;

  847.     double     num = 1;

  848.     int   ret, den = 1;

  849. 

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

  851.         return ret;

  852. 

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

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

  855.     else

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

  857.     return 0;

  858. }

  859. 

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

  861.                       enum AVOptionType type, const char *desc)

  862. {

  863.     void *dst, *target_obj;

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

  865.     if (!o || !target_obj)

  866.         return AVERROR_OPTION_NOT_FOUND;

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

  868.         av_log(obj, AV_LOG_ERROR,

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

  870.         return AVERROR(EINVAL);

  871.     }

  872. 

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

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

  875.     return 0;

  876. }

  877. 

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

  879. {

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

  881. }

  882. 

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

  884. {

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

  886. }

  887. 

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

  889. {

  890.     void *dst, *target_obj;

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

  892.     if (!o || !target_obj)

  893.         return AVERROR_OPTION_NOT_FOUND;

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

  895.         av_log(obj, AV_LOG_ERROR,

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

  897.         return AVERROR(EINVAL);

  898.     }

  899. 

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

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

  902.     return 0;

  903. }

  904. 

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

  906. {

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

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

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

  910.     int64_t res;

  911. 

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

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

  914.         return 0;

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

  916. }

  917. 

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

  919. {

  920.     if      (d == INT_MAX) {

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

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

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

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

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

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

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

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

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

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

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

  932.     } else {

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

  934.     }

  935. }

  936. 

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

  938.                      int req_flags, int rej_flags)

  939. {

  940.     const AVOption *opt=NULL;

  941.     AVOptionRanges *r;

  942.     int i;

  943. 

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

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

  946.             continue;

  947. 

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

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

  950.          * Only print items from the requested unit.

  951.          */

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

  953.             continue;

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

  955.             continue;

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

  957.             continue;

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

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

  960.         else

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

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

  963.                    opt->name);

  964. 

  965.         switch (opt->type) {

  966.             case AV_OPT_TYPE_FLAGS:

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

  968.                 break;

  969.             case AV_OPT_TYPE_INT:

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

  971.                 break;

  972.             case AV_OPT_TYPE_INT64:

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

  974.                 break;

  975.             case AV_OPT_TYPE_DOUBLE:

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

  977.                 break;

  978.             case AV_OPT_TYPE_FLOAT:

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

  980.                 break;

  981.             case AV_OPT_TYPE_STRING:

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

  983.                 break;

  984.             case AV_OPT_TYPE_RATIONAL:

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

  986.                 break;

  987.             case AV_OPT_TYPE_BINARY:

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

  989.                 break;

  990.             case AV_OPT_TYPE_IMAGE_SIZE:

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

  992.                 break;

  993.             case AV_OPT_TYPE_VIDEO_RATE:

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

  995.                 break;

  996.             case AV_OPT_TYPE_PIXEL_FMT:

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

  998.                 break;

  999.             case AV_OPT_TYPE_SAMPLE_FMT:

  1000.                 av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<sample_fmt>");

  1001.                 break;

  1002.             case AV_OPT_TYPE_DURATION:

  1003.                 av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<duration>");

  1004.                 break;

  1005.             case AV_OPT_TYPE_COLOR:

  1006.                 av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<color>");

  1007.                 break;

  1008.             case AV_OPT_TYPE_CHANNEL_LAYOUT:

  1009.                 av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<channel_layout>");

  1010.                 break;

  1011.             case AV_OPT_TYPE_CONST:

  1012.             default:

  1013.                 av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "");

  1014.                 break;

  1015.         }

  1016.         av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_ENCODING_PARAM) ? 'E' : '.');

  1017.         av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_DECODING_PARAM) ? 'D' : '.');

  1018.         av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_FILTERING_PARAM)? 'F' : '.');

  1019.         av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_VIDEO_PARAM   ) ? 'V' : '.');

  1020.         av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_AUDIO_PARAM   ) ? 'A' : '.');

  1021.         av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_SUBTITLE_PARAM) ? 'S' : '.');

  1022. 

  1023.         if (opt->help)

  1024.             av_log(av_log_obj, AV_LOG_INFO, " %s", opt->help);

  1025. 

  1026.         if (av_opt_query_ranges(&r, obj, opt->name, AV_OPT_SEARCH_FAKE_OBJ) >= 0) {

  1027.             switch (opt->type) {

  1028.             case AV_OPT_TYPE_INT:

  1029.             case AV_OPT_TYPE_INT64:

  1030.             case AV_OPT_TYPE_DOUBLE:

  1031.             case AV_OPT_TYPE_FLOAT:

  1032.             case AV_OPT_TYPE_RATIONAL:

  1033.                 for (i = 0; i < r->nb_ranges; i++) {

  1034.                     av_log(av_log_obj, AV_LOG_INFO, " (from ");

  1035.                     log_value(av_log_obj, AV_LOG_INFO, r->range[i]->value_min);

  1036.                     av_log(av_log_obj, AV_LOG_INFO, " to ");

  1037.                     log_value(av_log_obj, AV_LOG_INFO, r->range[i]->value_max);

  1038.                     av_log(av_log_obj, AV_LOG_INFO, ")");

  1039.                 }

  1040.                 break;

  1041.             }

  1042.             av_opt_freep_ranges(&r);

  1043.         }

  1044. 

  1045.         if (opt->type != AV_OPT_TYPE_CONST  &&

  1046.             opt->type != AV_OPT_TYPE_BINARY &&

  1047.                 !((opt->type == AV_OPT_TYPE_COLOR      ||

  1048.                    opt->type == AV_OPT_TYPE_IMAGE_SIZE ||

  1049.                    opt->type == AV_OPT_TYPE_STRING     ||

  1050.                    opt->type == AV_OPT_TYPE_VIDEO_RATE) &&

  1051.                   !opt->default_val.str)) {

  1052.             av_log(av_log_obj, AV_LOG_INFO, " (default ");

  1053.             switch (opt->type) {

  1054.             case AV_OPT_TYPE_FLAGS:

  1055.                 av_log(av_log_obj, AV_LOG_INFO, "%"PRIX64, opt->default_val.i64);

  1056.                 break;

  1057.             case AV_OPT_TYPE_DURATION:

  1058.             case AV_OPT_TYPE_INT:

  1059.             case AV_OPT_TYPE_INT64:

  1060.                 log_value(av_log_obj, AV_LOG_INFO, opt->default_val.i64);

  1061.                 break;

  1062.             case AV_OPT_TYPE_DOUBLE:

  1063.             case AV_OPT_TYPE_FLOAT:

  1064.                 log_value(av_log_obj, AV_LOG_INFO, opt->default_val.dbl);

  1065.                 break;

  1066.             case AV_OPT_TYPE_RATIONAL: {

  1067.                 AVRational q = av_d2q(opt->default_val.dbl, INT_MAX);

  1068.                 av_log(av_log_obj, AV_LOG_INFO, "%d/%d", q.num, q.den); }

  1069.                 break;

  1070.             case AV_OPT_TYPE_PIXEL_FMT:

  1071.                 av_log(av_log_obj, AV_LOG_INFO, "%s", (char *)av_x_if_null(av_get_pix_fmt_name(opt->default_val.i64), "none"));

  1072.                 break;

  1073.             case AV_OPT_TYPE_SAMPLE_FMT:

  1074.                 av_log(av_log_obj, AV_LOG_INFO, "%s", (char *)av_x_if_null(av_get_sample_fmt_name(opt->default_val.i64), "none"));

  1075.                 break;

  1076.             case AV_OPT_TYPE_COLOR:

  1077.             case AV_OPT_TYPE_IMAGE_SIZE:

  1078.             case AV_OPT_TYPE_STRING:

  1079.             case AV_OPT_TYPE_VIDEO_RATE:

  1080.                 av_log(av_log_obj, AV_LOG_INFO, "\"%s\"", opt->default_val.str);

  1081.                 break;

  1082.             case AV_OPT_TYPE_CHANNEL_LAYOUT:

  1083.                 av_log(av_log_obj, AV_LOG_INFO, "0x%"PRIx64, opt->default_val.i64);

  1084.                 break;

  1085.             }

  1086.             av_log(av_log_obj, AV_LOG_INFO, ")");

  1087.         }

  1088. 

  1089.         av_log(av_log_obj, AV_LOG_INFO, "\n");

  1090.         if (opt->unit && opt->type != AV_OPT_TYPE_CONST) {

  1091.             opt_list(obj, av_log_obj, opt->unit, req_flags, rej_flags);

  1092.         }

  1093.     }

  1094. }

  1095. 

  1096. int av_opt_show2(void *obj, void *av_log_obj, int req_flags, int rej_flags)

  1097. {

  1098.     if (!obj)

  1099.         return -1;

  1100. 

  1101.     av_log(av_log_obj, AV_LOG_INFO, "%s AVOptions:\n", (*(AVClass**)obj)->class_name);

  1102. 

  1103.     opt_list(obj, av_log_obj, NULL, req_flags, rej_flags);

  1104. 

  1105.     return 0;

  1106. }

  1107. 

  1108. void av_opt_set_defaults(void *s)

  1109. {

  1110. #if FF_API_OLD_AVOPTIONS

  1111.     av_opt_set_defaults2(s, 0, 0);

  1112. }

  1113. 

  1114. void av_opt_set_defaults2(void *s, int mask, int flags)

  1115. {

  1116. #endif

  1117.     const AVClass *class = *(AVClass **)s;

  1118.     const AVOption *opt = NULL;

  1119.     while ((opt = av_opt_next(s, opt)) != NULL) {

  1120.         void *dst = ((uint8_t*)s) + opt->offset;

  1121. #if FF_API_OLD_AVOPTIONS

  1122.         if ((opt->flags & mask) != flags)

  1123.             continue;

  1124. #endif

  1125.         switch (opt->type) {

  1126.             case AV_OPT_TYPE_CONST:

  1127.                 /* Nothing to be done here */

  1128.             break;

  1129.             case AV_OPT_TYPE_FLAGS:

  1130.             case AV_OPT_TYPE_INT:

  1131.             case AV_OPT_TYPE_INT64:

  1132.             case AV_OPT_TYPE_DURATION:

  1133.             case AV_OPT_TYPE_CHANNEL_LAYOUT:

  1134.                 write_number(s, opt, dst, 1, 1, opt->default_val.i64);

  1135.             break;

  1136.             case AV_OPT_TYPE_DOUBLE:

  1137.             case AV_OPT_TYPE_FLOAT: {

  1138.                 double val;

  1139.                 val = opt->default_val.dbl;

  1140.                 write_number(s, opt, dst, val, 1, 1);

  1141.             }

  1142.             break;

  1143.             case AV_OPT_TYPE_RATIONAL: {

  1144.                 AVRational val;

  1145.                 val = av_d2q(opt->default_val.dbl, INT_MAX);

  1146.                 write_number(s, opt, dst, 1, val.den, val.num);

  1147.             }

  1148.             break;

  1149.             case AV_OPT_TYPE_COLOR:

  1150.                 set_string_color(s, opt, opt->default_val.str, dst);

  1151.                 break;

  1152.             case AV_OPT_TYPE_STRING:

  1153.                 set_string(s, opt, opt->default_val.str, dst);

  1154.                 break;

  1155.             case AV_OPT_TYPE_IMAGE_SIZE:

  1156.                 set_string_image_size(s, opt, opt->default_val.str, dst);

  1157.                 break;

  1158.             case AV_OPT_TYPE_VIDEO_RATE:

  1159.                 set_string_video_rate(s, opt, opt->default_val.str, dst);

  1160.                 break;

  1161.             case AV_OPT_TYPE_PIXEL_FMT:

  1162. #if LIBAVUTIL_VERSION_MAJOR < 54

  1163.                 if (class->version && class->version < AV_VERSION_INT(52, 10, 100))

  1164.                     av_opt_set(s, opt->name, opt->default_val.str, 0);

  1165.                 else

  1166. #endif

  1167.                     write_number(s, opt, dst, 1, 1, opt->default_val.i64);

  1168.                 break;

  1169.             case AV_OPT_TYPE_SAMPLE_FMT:

  1170. #if LIBAVUTIL_VERSION_MAJOR < 54

  1171.                 if (class->version && class->version < AV_VERSION_INT(52, 10, 100))

  1172.                     av_opt_set(s, opt->name, opt->default_val.str, 0);

  1173.                 else

  1174. #endif

  1175.                     write_number(s, opt, dst, 1, 1, opt->default_val.i64);

  1176.                 break;

  1177.             case AV_OPT_TYPE_BINARY:

  1178.                 /* Cannot set default for binary */

  1179.             break;

  1180.             default:

  1181.                 av_log(s, AV_LOG_DEBUG, "AVOption type %d of option %s not implemented yet\n", opt->type, opt->name);

  1182.         }

  1183.     }

  1184. }

  1185. 

  1186. /**

  1187.  * Store the value in the field in ctx that is named like key.

  1188.  * ctx must be an AVClass context, storing is done using AVOptions.

  1189.  *

  1190.  * @param buf the string to parse, buf will be updated to point at the

  1191.  * separator just after the parsed key/value pair

  1192.  * @param key_val_sep a 0-terminated list of characters used to

  1193.  * separate key from value

  1194.  * @param pairs_sep a 0-terminated list of characters used to separate

  1195.  * two pairs from each other

  1196.  * @return 0 if the key/value pair has been successfully parsed and

  1197.  * set, or a negative value corresponding to an AVERROR code in case

  1198.  * of error:

  1199.  * AVERROR(EINVAL) if the key/value pair cannot be parsed,

  1200.  * the error code issued by av_opt_set() if the key/value pair

  1201.  * cannot be set

  1202.  */

  1203. static int parse_key_value_pair(void *ctx, const char **buf,

  1204.                                 const char *key_val_sep, const char *pairs_sep)

  1205. {

  1206.     char *key = av_get_token(buf, key_val_sep);

  1207.     char *val;

  1208.     int ret;

  1209. 

  1210.     if (!key)

  1211.         return AVERROR(ENOMEM);

  1212. 

  1213.     if (*key && strspn(*buf, key_val_sep)) {

  1214.         (*buf)++;

  1215.         val = av_get_token(buf, pairs_sep);

  1216.         if (!val) {

  1217.             av_freep(&key);

  1218.             return AVERROR(ENOMEM);

  1219.         }

  1220.     } else {

  1221.         av_log(ctx, AV_LOG_ERROR, "Missing key or no key/value separator found after key '%s'\n", key);

  1222.         av_free(key);

  1223.         return AVERROR(EINVAL);

  1224.     }

  1225. 

  1226.     av_log(ctx, AV_LOG_DEBUG, "Setting entry with key '%s' to value '%s'\n", key, val);

  1227. 

  1228.     ret = av_opt_set(ctx, key, val, AV_OPT_SEARCH_CHILDREN);

  1229.     if (ret == AVERROR_OPTION_NOT_FOUND)

  1230.         av_log(ctx, AV_LOG_ERROR, "Key '%s' not found.\n", key);

  1231. 

  1232.     av_free(key);

  1233.     av_free(val);

  1234.     return ret;

  1235. }

  1236. 

  1237. int av_set_options_string(void *ctx, const char *opts,

  1238.                           const char *key_val_sep, const char *pairs_sep)

  1239. {

  1240.     int ret, count = 0;

  1241. 

  1242.     if (!opts)

  1243.         return 0;

  1244. 

  1245.     while (*opts) {

  1246.         if ((ret = parse_key_value_pair(ctx, &opts, key_val_sep, pairs_sep)) < 0)

  1247.             return ret;

  1248.         count++;

  1249. 

  1250.         if (*opts)

  1251.             opts++;

  1252.     }

  1253. 

  1254.     return count;

  1255. }

  1256. 

  1257. #define WHITESPACES " \n\t"

  1258. 

  1259. static int is_key_char(char c)

  1260. {

  1261.     return (unsigned)((c | 32) - 'a') < 26 ||

  1262.            (unsigned)(c - '0') < 10 ||

  1263.            c == '-' || c == '_' || c == '/' || c == '.';

  1264. }

  1265. 

  1266. /**

  1267.  * Read a key from a string.

  1268.  *

  1269.  * The key consists of is_key_char characters and must be terminated by a

  1270.  * character from the delim string; spaces are ignored.

  1271.  *

  1272.  * @return  0 for success (even with ellipsis), <0 for failure

  1273.  */

  1274. static int get_key(const char **ropts, const char *delim, char **rkey)

  1275. {

  1276.     const char *opts = *ropts;

  1277.     const char *key_start, *key_end;

  1278. 

  1279.     key_start = opts += strspn(opts, WHITESPACES);

  1280.     while (is_key_char(*opts))

  1281.         opts++;

  1282.     key_end = opts;

  1283.     opts += strspn(opts, WHITESPACES);

  1284.     if (!*opts || !strchr(delim, *opts))

  1285.         return AVERROR(EINVAL);

  1286.     opts++;

  1287.     if (!(*rkey = av_malloc(key_end - key_start + 1)))

  1288.         return AVERROR(ENOMEM);

  1289.     memcpy(*rkey, key_start, key_end - key_start);

  1290.     (*rkey)[key_end - key_start] = 0;

  1291.     *ropts = opts;

  1292.     return 0;

  1293. }

  1294. 

  1295. int av_opt_get_key_value(const char **ropts,

  1296.                          const char *key_val_sep, const char *pairs_sep,

  1297.                          unsigned flags,

  1298.                          char **rkey, char **rval)

  1299. {

  1300.     int ret;

  1301.     char *key = NULL, *val;

  1302.     const char *opts = *ropts;

  1303. 

  1304.     if ((ret = get_key(&opts, key_val_sep, &key)) < 0 &&

  1305.         !(flags & AV_OPT_FLAG_IMPLICIT_KEY))

  1306.         return AVERROR(EINVAL);

  1307.     if (!(val = av_get_token(&opts, pairs_sep))) {

  1308.         av_free(key);

  1309.         return AVERROR(ENOMEM);

  1310.     }

  1311.     *ropts = opts;

  1312.     *rkey  = key;

  1313.     *rval  = val;

  1314.     return 0;

  1315. }

  1316. 

  1317. int av_opt_set_from_string(void *ctx, const char *opts,

  1318.                            const char *const *shorthand,

  1319.                            const char *key_val_sep, const char *pairs_sep)

  1320. {

  1321.     int ret, count = 0;

  1322.     const char *dummy_shorthand = NULL;

  1323.     char *av_uninit(parsed_key), *av_uninit(value);

  1324.     const char *key;

  1325. 

  1326.     if (!opts)

  1327.         return 0;

  1328.     if (!shorthand)

  1329.         shorthand = &dummy_shorthand;

  1330. 

  1331.     while (*opts) {

  1332.         ret = av_opt_get_key_value(&opts, key_val_sep, pairs_sep,

  1333.                                    *shorthand ? AV_OPT_FLAG_IMPLICIT_KEY : 0,

  1334.                                    &parsed_key, &value);

  1335.         if (ret < 0) {

  1336.             if (ret == AVERROR(EINVAL))

  1337.                 av_log(ctx, AV_LOG_ERROR, "No option name near '%s'\n", opts);

  1338.             else

  1339.                 av_log(ctx, AV_LOG_ERROR, "Unable to parse '%s': %s\n", opts,

  1340.                        av_err2str(ret));

  1341.             return ret;

  1342.         }

  1343.         if (*opts)

  1344.             opts++;

  1345.         if (parsed_key) {

  1346.             key = parsed_key;

  1347.             while (*shorthand) /* discard all remaining shorthand */

  1348.                 shorthand++;

  1349.         } else {

  1350.             key = *(shorthand++);

  1351.         }

  1352. 

  1353.         av_log(ctx, AV_LOG_DEBUG, "Setting '%s' to value '%s'\n", key, value);

  1354.         if ((ret = av_opt_set(ctx, key, value, 0)) < 0) {

  1355.             if (ret == AVERROR_OPTION_NOT_FOUND)

  1356.                 av_log(ctx, AV_LOG_ERROR, "Option '%s' not found\n", key);

  1357.             av_free(value);

  1358.             av_free(parsed_key);

  1359.             return ret;

  1360.         }

  1361. 

  1362.         av_free(value);

  1363.         av_free(parsed_key);

  1364.         count++;

  1365.     }

  1366.     return count;

  1367. }

  1368. 

  1369. void av_opt_free(void *obj)

  1370. {

  1371.     const AVOption *o = NULL;

  1372.     while ((o = av_opt_next(obj, o)))

  1373.         if (o->type == AV_OPT_TYPE_STRING || o->type == AV_OPT_TYPE_BINARY)

  1374.             av_freep((uint8_t *)obj + o->offset);

  1375. }

  1376. 

  1377. int av_opt_set_dict(void *obj, AVDictionary **options)

  1378. {

  1379.     AVDictionaryEntry *t = NULL;

  1380.     AVDictionary    *tmp = NULL;

  1381.     int ret = 0;

  1382. 

  1383.     while ((t = av_dict_get(*options, "", t, AV_DICT_IGNORE_SUFFIX))) {

  1384.         ret = av_opt_set(obj, t->key, t->value, 0);

  1385.         if (ret == AVERROR_OPTION_NOT_FOUND)

  1386.             av_dict_set(&tmp, t->key, t->value, 0);

  1387.         else if (ret < 0) {

  1388.             av_log(obj, AV_LOG_ERROR, "Error setting option %s to value %s.\n", t->key, t->value);

  1389.             break;

  1390.         }

  1391.         ret = 0;

  1392.     }

  1393.     av_dict_free(options);

  1394.     *options = tmp;

  1395.     return ret;

  1396. }

  1397. 

  1398. const AVOption *av_opt_find(void *obj, const char *name, const char *unit,

  1399.                             int opt_flags, int search_flags)

  1400. {

  1401.     return av_opt_find2(obj, name, unit, opt_flags, search_flags, NULL);

  1402. }

  1403. 

  1404. const AVOption *av_opt_find2(void *obj, const char *name, const char *unit,

  1405.                              int opt_flags, int search_flags, void **target_obj)

  1406. {

  1407.     const AVClass  *c;

  1408.     const AVOption *o = NULL;

  1409. 

  1410.     if(!obj)

  1411.         return NULL;

  1412. 

  1413.     c= *(AVClass**)obj;

  1414. 

  1415.     if (!c)

  1416.         return NULL;

  1417. 

  1418.     if (search_flags & AV_OPT_SEARCH_CHILDREN) {

  1419.         if (search_flags & AV_OPT_SEARCH_FAKE_OBJ) {

  1420.             const AVClass *child = NULL;

  1421.             while (child = av_opt_child_class_next(c, child))

  1422.                 if (o = av_opt_find2(&child, name, unit, opt_flags, search_flags, NULL))

  1423.                     return o;

  1424.         } else {

  1425.             void *child = NULL;

  1426.             while (child = av_opt_child_next(obj, child))

  1427.                 if (o = av_opt_find2(child, name, unit, opt_flags, search_flags, target_obj))

  1428.                     return o;

  1429.         }

  1430.     }

  1431. 

  1432.     while (o = av_opt_next(obj, o)) {

  1433.         if (!strcmp(o->name, name) && (o->flags & opt_flags) == opt_flags &&

  1434.             ((!unit && o->type != AV_OPT_TYPE_CONST) ||

  1435.              (unit  && o->type == AV_OPT_TYPE_CONST && o->unit && !strcmp(o->unit, unit)))) {

  1436.             if (target_obj) {

  1437.                 if (!(search_flags & AV_OPT_SEARCH_FAKE_OBJ))

  1438.                     *target_obj = obj;

  1439.                 else

  1440.                     *target_obj = NULL;

  1441.             }

  1442.             return o;

  1443.         }

  1444.     }

  1445.     return NULL;

  1446. }

  1447. 

  1448. void *av_opt_child_next(void *obj, void *prev)

  1449. {

  1450.     const AVClass *c = *(AVClass**)obj;

  1451.     if (c->child_next)

  1452.         return c->child_next(obj, prev);

  1453.     return NULL;

  1454. }

  1455. 

  1456. const AVClass *av_opt_child_class_next(const AVClass *parent, const AVClass *prev)

  1457. {

  1458.     if (parent->child_class_next)

  1459.         return parent->child_class_next(prev);

  1460.     return NULL;

  1461. }

  1462. 

  1463. void *av_opt_ptr(const AVClass *class, void *obj, const char *name)

  1464. {

  1465.     const AVOption *opt= av_opt_find2(&class, name, NULL, 0, AV_OPT_SEARCH_FAKE_OBJ, NULL);

  1466.     if(!opt)

  1467.         return NULL;

  1468.     return (uint8_t*)obj + opt->offset;

  1469. }

  1470. 

  1471. int av_opt_query_ranges(AVOptionRanges **ranges_arg, void *obj, const char *key, int flags)

  1472. {

  1473.     const AVClass *c = *(AVClass**)obj;

  1474.     int (*callback)(AVOptionRanges **, void *obj, const char *key, int flags) = NULL;

  1475. 

  1476.     if (c->version > (52 << 16 | 11 << 8))

  1477.         callback = c->query_ranges;

  1478. 

  1479.     if (!callback)

  1480.         callback = av_opt_query_ranges_default;

  1481. 

  1482.     return callback(ranges_arg, obj, key, flags);

  1483. }

  1484. 

  1485. int av_opt_query_ranges_default(AVOptionRanges **ranges_arg, void *obj, const char *key, int flags)

  1486. {

  1487.     AVOptionRanges *ranges = av_mallocz(sizeof(*ranges));

  1488.     AVOptionRange **range_array = av_mallocz(sizeof(void*));

  1489.     AVOptionRange *range = av_mallocz(sizeof(*range));

  1490.     const AVOption *field = av_opt_find(obj, key, NULL, 0, flags);

  1491.     int ret;

  1492. 

  1493.     *ranges_arg = NULL;

  1494. 

  1495.     if (!ranges || !range || !range_array || !field) {

  1496.         ret = AVERROR(ENOMEM);

  1497.         goto fail;

  1498.     }

  1499. 

  1500.     ranges->range = range_array;

  1501.     ranges->range[0] = range;

  1502.     ranges->nb_ranges = 1;

  1503.     range->is_range = 1;

  1504.     range->value_min = field->min;

  1505.     range->value_max = field->max;

  1506. 

  1507.     switch (field->type) {

  1508.     case AV_OPT_TYPE_INT:

  1509.     case AV_OPT_TYPE_INT64:

  1510.     case AV_OPT_TYPE_PIXEL_FMT:

  1511.     case AV_OPT_TYPE_SAMPLE_FMT:

  1512.     case AV_OPT_TYPE_FLOAT:

  1513.     case AV_OPT_TYPE_DOUBLE:

  1514.     case AV_OPT_TYPE_DURATION:

  1515.     case AV_OPT_TYPE_COLOR:

  1516.     case AV_OPT_TYPE_CHANNEL_LAYOUT:

  1517.         break;

  1518.     case AV_OPT_TYPE_STRING:

  1519.         range->component_min = 0;

  1520.         range->component_max = 0x10FFFF; // max unicode value

  1521.         range->value_min = -1;

  1522.         range->value_max = INT_MAX;

  1523.         break;

  1524.     case AV_OPT_TYPE_RATIONAL:

  1525.         range->component_min = INT_MIN;

  1526.         range->component_max = INT_MAX;

  1527.         break;

  1528.     case AV_OPT_TYPE_IMAGE_SIZE:

  1529.         range->component_min = 0;

  1530.         range->component_max = INT_MAX/128/8;

  1531.         range->value_min = 0;

  1532.         range->value_max = INT_MAX/8;

  1533.         break;

  1534.     case AV_OPT_TYPE_VIDEO_RATE:

  1535.         range->component_min = 1;

  1536.         range->component_max = INT_MAX;

  1537.         range->value_min = 1;

  1538.         range->value_max = INT_MAX;

  1539.         break;

  1540.     default:

  1541.         ret = AVERROR(ENOSYS);

  1542.         goto fail;

  1543.     }

  1544. 

  1545.     *ranges_arg = ranges;

  1546.     return 0;

  1547. fail:

  1548.     av_free(ranges);

  1549.     av_free(range);

  1550.     av_free(range_array);

  1551.     return ret;

  1552. }

  1553. 

  1554. void av_opt_freep_ranges(AVOptionRanges **rangesp)

  1555. {

  1556.     int i;

  1557.     AVOptionRanges *ranges = *rangesp;

  1558. 

  1559.     for (i = 0; i < ranges->nb_ranges; i++) {

  1560.         AVOptionRange *range = ranges->range[i];

  1561.         av_freep(&range->str);

  1562.         av_freep(&ranges->range[i]);

  1563.     }

  1564.     av_freep(&ranges->range);

  1565.     av_freep(rangesp);

  1566. }

  1567. 

  1568. #ifdef TEST

  1569. 

  1570. typedef struct TestContext

  1571. {

  1572.     const AVClass *class;

  1573.     int num;

  1574.     int toggle;

  1575.     char *string;

  1576.     int flags;

  1577.     AVRational rational;

  1578.     AVRational video_rate;

  1579.     int w, h;

  1580.     enum AVPixelFormat pix_fmt;

  1581.     enum AVSampleFormat sample_fmt;

  1582.     int64_t duration;

  1583.     uint8_t color[4];

  1584.     int64_t channel_layout;

  1585. } TestContext;

  1586. 

  1587. #define OFFSET(x) offsetof(TestContext, x)

  1588. 

  1589. #define TEST_FLAG_COOL 01

  1590. #define TEST_FLAG_LAME 02

  1591. #define TEST_FLAG_MU   04

  1592. 

  1593. static const AVOption test_options[]= {

  1594. {"num",      "set num",        OFFSET(num),      AV_OPT_TYPE_INT,      {.i64 = 0},       0,        100                 },

  1595. {"toggle",   "set toggle",     OFFSET(toggle),   AV_OPT_TYPE_INT,      {.i64 = 0},       0,        1                   },

  1596. {"rational", "set rational",   OFFSET(rational), AV_OPT_TYPE_RATIONAL, {.dbl = 0},       0,        10                  },

  1597. {"string",   "set string",     OFFSET(string),   AV_OPT_TYPE_STRING,   {.str = "default"}, CHAR_MIN, CHAR_MAX          },

  1598. {"flags",    "set flags",      OFFSET(flags),    AV_OPT_TYPE_FLAGS,    {.i64 = 0},       0,        INT_MAX, 0, "flags" },

  1599. {"cool",     "set cool flag ", 0,                AV_OPT_TYPE_CONST,    {.i64 = TEST_FLAG_COOL}, INT_MIN,  INT_MAX, 0, "flags" },

  1600. {"lame",     "set lame flag ", 0,                AV_OPT_TYPE_CONST,    {.i64 = TEST_FLAG_LAME}, INT_MIN,  INT_MAX, 0, "flags" },

  1601. {"mu",       "set mu flag ",   0,                AV_OPT_TYPE_CONST,    {.i64 = TEST_FLAG_MU},   INT_MIN,  INT_MAX, 0, "flags" },

  1602. {"size",     "set size",       OFFSET(w),        AV_OPT_TYPE_IMAGE_SIZE,{0},             0,        0                   },

  1603. {"pix_fmt",  "set pixfmt",     OFFSET(pix_fmt),  AV_OPT_TYPE_PIXEL_FMT, {.i64 = AV_PIX_FMT_NONE}, -1, INT_MAX},

  1604. {"sample_fmt", "set samplefmt", OFFSET(sample_fmt), AV_OPT_TYPE_SAMPLE_FMT, {.i64 = AV_SAMPLE_FMT_NONE}, -1, INT_MAX},

  1605. {"video_rate", "set videorate", OFFSET(video_rate), AV_OPT_TYPE_VIDEO_RATE,  {.str = "25"}, 0,     0                   },

  1606. {"duration", "set duration",   OFFSET(duration), AV_OPT_TYPE_DURATION, {.i64 = 0}, 0, INT64_MAX},

  1607. {"color", "set color",   OFFSET(color), AV_OPT_TYPE_COLOR, {.str = "pink"}, 0, 0},

  1608. {"cl", "set channel layout", OFFSET(channel_layout), AV_OPT_TYPE_CHANNEL_LAYOUT, {.i64 = AV_CH_LAYOUT_HEXAGONAL}, 0, INT64_MAX},

  1609. {NULL},

  1610. };

  1611. 

  1612. static const char *test_get_name(void *ctx)

  1613. {

  1614.     return "test";

  1615. }

  1616. 

  1617. static const AVClass test_class = {

  1618.     "TestContext",

  1619.     test_get_name,

  1620.     test_options

  1621. };

  1622. 

  1623. int main(void)

  1624. {

  1625.     int i;

  1626. 

  1627.     printf("\nTesting av_set_options_string()\n");

  1628.     {

  1629.         TestContext test_ctx = { 0 };

  1630.         static const char * const options[] = {

  1631.             "",

  1632.             ":",

  1633.             "=",

  1634.             "foo=:",

  1635.             ":=foo",

  1636.             "=foo",

  1637.             "foo=",

  1638.             "foo",

  1639.             "foo=val",

  1640.             "foo==val",

  1641.             "toggle=:",

  1642.             "string=:",

  1643.             "toggle=1 : foo",

  1644.             "toggle=100",

  1645.             "toggle==1",

  1646.             "flags=+mu-lame : num=42: toggle=0",

  1647.             "num=42 : string=blahblah",

  1648.             "rational=0 : rational=1/2 : rational=1/-1",

  1649.             "rational=-1/0",

  1650.             "size=1024x768",

  1651.             "size=pal",

  1652.             "size=bogus",

  1653.             "pix_fmt=yuv420p",

  1654.             "pix_fmt=2",

  1655.             "pix_fmt=bogus",

  1656.             "sample_fmt=s16",

  1657.             "sample_fmt=2",

  1658.             "sample_fmt=bogus",

  1659.             "video_rate=pal",

  1660.             "video_rate=25",

  1661.             "video_rate=30000/1001",

  1662.             "video_rate=30/1.001",

  1663.             "video_rate=bogus",

  1664.             "duration=bogus",

  1665.             "duration=123.45",

  1666.             "duration=1\\:23\\:45.67",

  1667.             "color=blue",

  1668.             "color=0x223300",

  1669.             "color=0x42FF07AA",

  1670.             "cl=stereo+downmix",

  1671.             "cl=foo",

  1672.         };

  1673. 

  1674.         test_ctx.class = &test_class;

  1675.         av_opt_set_defaults(&test_ctx);

  1676. 

  1677.         av_log_set_level(AV_LOG_DEBUG);

  1678. 

  1679.         for (i=0; i < FF_ARRAY_ELEMS(options); i++) {

  1680.             av_log(&test_ctx, AV_LOG_DEBUG, "Setting options string '%s'\n", options[i]);

  1681.             if (av_set_options_string(&test_ctx, options[i], "=", ":") < 0)

  1682.                 av_log(&test_ctx, AV_LOG_ERROR, "Error setting options string: '%s'\n", options[i]);

  1683.             printf("\n");

  1684.         }

  1685.         av_opt_free(&test_ctx);

  1686.     }

  1687. 

  1688.     printf("\nTesting av_opt_set_from_string()\n");

  1689.     {

  1690.         TestContext test_ctx = { 0 };

  1691.         static const char * const options[] = {

  1692.             "",

  1693.             "5",

  1694.             "5:hello",

  1695.             "5:hello:size=pal",

  1696.             "5:size=pal:hello",

  1697.             ":",

  1698.             "=",

  1699.             " 5 : hello : size = pal ",

  1700.             "a_very_long_option_name_that_will_need_to_be_ellipsized_around_here=42"

  1701.         };

  1702.         static const char * const shorthand[] = { "num", "string", NULL };

  1703. 

  1704.         test_ctx.class = &test_class;

  1705.         av_opt_set_defaults(&test_ctx);

  1706. 

  1707.         av_log_set_level(AV_LOG_DEBUG);

  1708. 

  1709.         for (i=0; i < FF_ARRAY_ELEMS(options); i++) {

  1710.             av_log(&test_ctx, AV_LOG_DEBUG, "Setting options string '%s'\n", options[i]);

  1711.             if (av_opt_set_from_string(&test_ctx, options[i], shorthand, "=", ":") < 0)

  1712.                 av_log(&test_ctx, AV_LOG_ERROR, "Error setting options string: '%s'\n", options[i]);

  1713.             printf("\n");

  1714.         }

  1715.         av_opt_free(&test_ctx);

  1716.     }

  1717. 

  1718.     return 0;

  1719. }

  1720. 

  1721. #endif