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- /*
- * AVOptions
- * Copyright (c) 2005 Michael Niedermayer <michaelni@gmx.at>
- *
- * This file is part of FFmpeg.
- *
- * FFmpeg is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * FFmpeg is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with FFmpeg; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- */
- /**
- * @file
- * AVOptions
- * @author Michael Niedermayer <michaelni@gmx.at>
- */
- #include "avutil.h"
- #include "avassert.h"
- #include "avstring.h"
- #include "channel_layout.h"
- #include "common.h"
- #include "dict.h"
- #include "eval.h"
- #include "log.h"
- #include "parseutils.h"
- #include "pixdesc.h"
- #include "mathematics.h"
- #include "opt.h"
- #include "samplefmt.h"
- #include "bprint.h"
- #include <float.h>
- const AVOption *av_opt_next(const void *obj, const AVOption *last)
- {
- const AVClass *class;
- if (!obj)
- return NULL;
- class = *(const AVClass**)obj;
- if (!last && class && class->option && class->option[0].name)
- return class->option;
- if (last && last[1].name)
- return ++last;
- return NULL;
- }
- static int read_number(const AVOption *o, const void *dst, double *num, int *den, int64_t *intnum)
- {
- switch (o->type) {
- case AV_OPT_TYPE_FLAGS:
- *intnum = *(unsigned int*)dst;
- return 0;
- case AV_OPT_TYPE_PIXEL_FMT:
- *intnum = *(enum AVPixelFormat *)dst;
- return 0;
- case AV_OPT_TYPE_SAMPLE_FMT:
- *intnum = *(enum AVSampleFormat *)dst;
- return 0;
- case AV_OPT_TYPE_BOOL:
- case AV_OPT_TYPE_INT:
- *intnum = *(int *)dst;
- return 0;
- case AV_OPT_TYPE_CHANNEL_LAYOUT:
- case AV_OPT_TYPE_DURATION:
- case AV_OPT_TYPE_INT64:
- case AV_OPT_TYPE_UINT64:
- *intnum = *(int64_t *)dst;
- return 0;
- case AV_OPT_TYPE_FLOAT:
- *num = *(float *)dst;
- return 0;
- case AV_OPT_TYPE_DOUBLE:
- *num = *(double *)dst;
- return 0;
- case AV_OPT_TYPE_RATIONAL:
- *intnum = ((AVRational *)dst)->num;
- *den = ((AVRational *)dst)->den;
- return 0;
- case AV_OPT_TYPE_CONST:
- *num = o->default_val.dbl;
- return 0;
- }
- return AVERROR(EINVAL);
- }
- static int write_number(void *obj, const AVOption *o, void *dst, double num, int den, int64_t intnum)
- {
- if (o->type != AV_OPT_TYPE_FLAGS &&
- (!den || o->max * den < num * intnum || o->min * den > num * intnum)) {
- num = den ? num * intnum / den : (num && intnum ? INFINITY : NAN);
- av_log(obj, AV_LOG_ERROR, "Value %f for parameter '%s' out of range [%g - %g]\n",
- num, o->name, o->min, o->max);
- return AVERROR(ERANGE);
- }
- if (o->type == AV_OPT_TYPE_FLAGS) {
- double d = num*intnum/den;
- if (d < -1.5 || d > 0xFFFFFFFF+0.5 || (llrint(d*256) & 255)) {
- av_log(obj, AV_LOG_ERROR,
- "Value %f for parameter '%s' is not a valid set of 32bit integer flags\n",
- num*intnum/den, o->name);
- return AVERROR(ERANGE);
- }
- }
- switch (o->type) {
- case AV_OPT_TYPE_PIXEL_FMT:
- *(enum AVPixelFormat *)dst = llrint(num / den) * intnum;
- break;
- case AV_OPT_TYPE_SAMPLE_FMT:
- *(enum AVSampleFormat *)dst = llrint(num / den) * intnum;
- break;
- case AV_OPT_TYPE_BOOL:
- case AV_OPT_TYPE_FLAGS:
- case AV_OPT_TYPE_INT:
- *(int *)dst = llrint(num / den) * intnum;
- break;
- case AV_OPT_TYPE_DURATION:
- case AV_OPT_TYPE_CHANNEL_LAYOUT:
- case AV_OPT_TYPE_INT64:{
- double d = num / den;
- if (intnum == 1 && d == (double)INT64_MAX) {
- *(int64_t *)dst = INT64_MAX;
- } else
- *(int64_t *)dst = llrint(d) * intnum;
- break;}
- case AV_OPT_TYPE_UINT64:{
- double d = num / den;
- // We must special case uint64_t here as llrint() does not support values
- // outside the int64_t range and there is no portable function which does
- // "INT64_MAX + 1ULL" is used as it is representable exactly as IEEE double
- // while INT64_MAX is not
- if (intnum == 1 && d == (double)UINT64_MAX) {
- *(uint64_t *)dst = UINT64_MAX;
- } else if (d > INT64_MAX + 1ULL) {
- *(uint64_t *)dst = (llrint(d - (INT64_MAX + 1ULL)) + (INT64_MAX + 1ULL))*intnum;
- } else {
- *(uint64_t *)dst = llrint(d) * intnum;
- }
- break;}
- case AV_OPT_TYPE_FLOAT:
- *(float *)dst = num * intnum / den;
- break;
- case AV_OPT_TYPE_DOUBLE:
- *(double *)dst = num * intnum / den;
- break;
- case AV_OPT_TYPE_RATIONAL:
- case AV_OPT_TYPE_VIDEO_RATE:
- if ((int) num == num)
- *(AVRational *)dst = (AVRational) { num *intnum, den };
- else
- *(AVRational *)dst = av_d2q(num * intnum / den, 1 << 24);
- break;
- default:
- return AVERROR(EINVAL);
- }
- return 0;
- }
- static int hexchar2int(char c) {
- if (c >= '0' && c <= '9')
- return c - '0';
- if (c >= 'a' && c <= 'f')
- return c - 'a' + 10;
- if (c >= 'A' && c <= 'F')
- return c - 'A' + 10;
- return -1;
- }
- static int set_string_binary(void *obj, const AVOption *o, const char *val, uint8_t **dst)
- {
- int *lendst = (int *)(dst + 1);
- uint8_t *bin, *ptr;
- int len;
- av_freep(dst);
- *lendst = 0;
- if (!val || !(len = strlen(val)))
- return 0;
- if (len & 1)
- return AVERROR(EINVAL);
- len /= 2;
- ptr = bin = av_malloc(len);
- if (!ptr)
- return AVERROR(ENOMEM);
- while (*val) {
- int a = hexchar2int(*val++);
- int b = hexchar2int(*val++);
- if (a < 0 || b < 0) {
- av_free(bin);
- return AVERROR(EINVAL);
- }
- *ptr++ = (a << 4) | b;
- }
- *dst = bin;
- *lendst = len;
- return 0;
- }
- static int set_string(void *obj, const AVOption *o, const char *val, uint8_t **dst)
- {
- av_freep(dst);
- *dst = av_strdup(val);
- return *dst ? 0 : AVERROR(ENOMEM);
- }
- #define DEFAULT_NUMVAL(opt) ((opt->type == AV_OPT_TYPE_INT64 || \
- opt->type == AV_OPT_TYPE_UINT64 || \
- opt->type == AV_OPT_TYPE_CONST || \
- opt->type == AV_OPT_TYPE_FLAGS || \
- opt->type == AV_OPT_TYPE_INT) \
- ? opt->default_val.i64 \
- : opt->default_val.dbl)
- static int set_string_number(void *obj, void *target_obj, const AVOption *o, const char *val, void *dst)
- {
- int ret = 0;
- int num, den;
- char c;
- if (sscanf(val, "%d%*1[:/]%d%c", &num, &den, &c) == 2) {
- if ((ret = write_number(obj, o, dst, 1, den, num)) >= 0)
- return ret;
- ret = 0;
- }
- for (;;) {
- int i = 0;
- char buf[256];
- int cmd = 0;
- double d;
- int64_t intnum = 1;
- if (o->type == AV_OPT_TYPE_FLAGS) {
- if (*val == '+' || *val == '-')
- cmd = *(val++);
- for (; i < sizeof(buf) - 1 && val[i] && val[i] != '+' && val[i] != '-'; i++)
- buf[i] = val[i];
- buf[i] = 0;
- }
- {
- const AVOption *o_named = av_opt_find(target_obj, i ? buf : val, o->unit, 0, 0);
- int res;
- int ci = 0;
- double const_values[64];
- const char * const_names[64];
- if (o_named && o_named->type == AV_OPT_TYPE_CONST)
- d = DEFAULT_NUMVAL(o_named);
- else {
- if (o->unit) {
- for (o_named = NULL; o_named = av_opt_next(target_obj, o_named); ) {
- if (o_named->type == AV_OPT_TYPE_CONST &&
- o_named->unit &&
- !strcmp(o_named->unit, o->unit)) {
- if (ci + 6 >= FF_ARRAY_ELEMS(const_values)) {
- av_log(obj, AV_LOG_ERROR, "const_values array too small for %s\n", o->unit);
- return AVERROR_PATCHWELCOME;
- }
- const_names [ci ] = o_named->name;
- const_values[ci++] = DEFAULT_NUMVAL(o_named);
- }
- }
- }
- const_names [ci ] = "default";
- const_values[ci++] = DEFAULT_NUMVAL(o);
- const_names [ci ] = "max";
- const_values[ci++] = o->max;
- const_names [ci ] = "min";
- const_values[ci++] = o->min;
- const_names [ci ] = "none";
- const_values[ci++] = 0;
- const_names [ci ] = "all";
- const_values[ci++] = ~0;
- const_names [ci] = NULL;
- const_values[ci] = 0;
- res = av_expr_parse_and_eval(&d, i ? buf : val, const_names,
- const_values, NULL, NULL, NULL, NULL, NULL, 0, obj);
- if (res < 0) {
- av_log(obj, AV_LOG_ERROR, "Unable to parse option value \"%s\"\n", val);
- return res;
- }
- }
- }
- if (o->type == AV_OPT_TYPE_FLAGS) {
- read_number(o, dst, NULL, NULL, &intnum);
- if (cmd == '+')
- d = intnum | (int64_t)d;
- else if (cmd == '-')
- d = intnum &~(int64_t)d;
- }
- if ((ret = write_number(obj, o, dst, d, 1, 1)) < 0)
- return ret;
- val += i;
- if (!i || !*val)
- return 0;
- }
- }
- static int set_string_image_size(void *obj, const AVOption *o, const char *val, int *dst)
- {
- int ret;
- if (!val || !strcmp(val, "none")) {
- dst[0] =
- dst[1] = 0;
- return 0;
- }
- ret = av_parse_video_size(dst, dst + 1, val);
- if (ret < 0)
- av_log(obj, AV_LOG_ERROR, "Unable to parse option value \"%s\" as image size\n", val);
- return ret;
- }
- static int set_string_video_rate(void *obj, const AVOption *o, const char *val, AVRational *dst)
- {
- int ret;
- if (!val) {
- ret = AVERROR(EINVAL);
- } else {
- ret = av_parse_video_rate(dst, val);
- }
- if (ret < 0)
- av_log(obj, AV_LOG_ERROR, "Unable to parse option value \"%s\" as video rate\n", val);
- return ret;
- }
- static int set_string_color(void *obj, const AVOption *o, const char *val, uint8_t *dst)
- {
- int ret;
- if (!val) {
- return 0;
- } else {
- ret = av_parse_color(dst, val, -1, obj);
- if (ret < 0)
- av_log(obj, AV_LOG_ERROR, "Unable to parse option value \"%s\" as color\n", val);
- return ret;
- }
- return 0;
- }
- static const char *get_bool_name(int val)
- {
- if (val < 0)
- return "auto";
- return val ? "true" : "false";
- }
- static int set_string_bool(void *obj, const AVOption *o, const char *val, int *dst)
- {
- int n;
- if (!val)
- return 0;
- if (!strcmp(val, "auto")) {
- n = -1;
- } else if (av_match_name(val, "true,y,yes,enable,enabled,on")) {
- n = 1;
- } else if (av_match_name(val, "false,n,no,disable,disabled,off")) {
- n = 0;
- } else {
- char *end = NULL;
- n = strtol(val, &end, 10);
- if (val + strlen(val) != end)
- goto fail;
- }
- if (n < o->min || n > o->max)
- goto fail;
- *dst = n;
- return 0;
- fail:
- av_log(obj, AV_LOG_ERROR, "Unable to parse option value \"%s\" as boolean\n", val);
- return AVERROR(EINVAL);
- }
- static int set_string_fmt(void *obj, const AVOption *o, const char *val, uint8_t *dst,
- int fmt_nb, int ((*get_fmt)(const char *)), const char *desc)
- {
- int fmt, min, max;
- if (!val || !strcmp(val, "none")) {
- fmt = -1;
- } else {
- fmt = get_fmt(val);
- if (fmt == -1) {
- char *tail;
- fmt = strtol(val, &tail, 0);
- if (*tail || (unsigned)fmt >= fmt_nb) {
- av_log(obj, AV_LOG_ERROR,
- "Unable to parse option value \"%s\" as %s\n", val, desc);
- return AVERROR(EINVAL);
- }
- }
- }
- min = FFMAX(o->min, -1);
- max = FFMIN(o->max, fmt_nb-1);
- // hack for compatibility with old ffmpeg
- if(min == 0 && max == 0) {
- min = -1;
- max = fmt_nb-1;
- }
- if (fmt < min || fmt > max) {
- av_log(obj, AV_LOG_ERROR,
- "Value %d for parameter '%s' out of %s format range [%d - %d]\n",
- fmt, o->name, desc, min, max);
- return AVERROR(ERANGE);
- }
- *(int *)dst = fmt;
- return 0;
- }
- static int set_string_pixel_fmt(void *obj, const AVOption *o, const char *val, uint8_t *dst)
- {
- return set_string_fmt(obj, o, val, dst,
- AV_PIX_FMT_NB, av_get_pix_fmt, "pixel format");
- }
- static int set_string_sample_fmt(void *obj, const AVOption *o, const char *val, uint8_t *dst)
- {
- return set_string_fmt(obj, o, val, dst,
- AV_SAMPLE_FMT_NB, av_get_sample_fmt, "sample format");
- }
- int av_opt_set(void *obj, const char *name, const char *val, int search_flags)
- {
- int ret = 0;
- void *dst, *target_obj;
- const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
- if (!o || !target_obj)
- return AVERROR_OPTION_NOT_FOUND;
- if (!val && (o->type != AV_OPT_TYPE_STRING &&
- o->type != AV_OPT_TYPE_PIXEL_FMT && o->type != AV_OPT_TYPE_SAMPLE_FMT &&
- o->type != AV_OPT_TYPE_IMAGE_SIZE && o->type != AV_OPT_TYPE_VIDEO_RATE &&
- o->type != AV_OPT_TYPE_DURATION && o->type != AV_OPT_TYPE_COLOR &&
- o->type != AV_OPT_TYPE_CHANNEL_LAYOUT && o->type != AV_OPT_TYPE_BOOL))
- return AVERROR(EINVAL);
- if (o->flags & AV_OPT_FLAG_READONLY)
- return AVERROR(EINVAL);
- if (o->flags & AV_OPT_FLAG_DEPRECATED)
- av_log(obj, AV_LOG_WARNING, "The \"%s\" option is deprecated: %s\n", name, o->help);
- dst = ((uint8_t *)target_obj) + o->offset;
- switch (o->type) {
- case AV_OPT_TYPE_BOOL:
- return set_string_bool(obj, o, val, dst);
- case AV_OPT_TYPE_STRING:
- return set_string(obj, o, val, dst);
- case AV_OPT_TYPE_BINARY:
- return set_string_binary(obj, o, val, dst);
- case AV_OPT_TYPE_FLAGS:
- case AV_OPT_TYPE_INT:
- case AV_OPT_TYPE_INT64:
- case AV_OPT_TYPE_UINT64:
- case AV_OPT_TYPE_FLOAT:
- case AV_OPT_TYPE_DOUBLE:
- case AV_OPT_TYPE_RATIONAL:
- return set_string_number(obj, target_obj, o, val, dst);
- case AV_OPT_TYPE_IMAGE_SIZE:
- return set_string_image_size(obj, o, val, dst);
- case AV_OPT_TYPE_VIDEO_RATE: {
- AVRational tmp;
- ret = set_string_video_rate(obj, o, val, &tmp);
- if (ret < 0)
- return ret;
- return write_number(obj, o, dst, 1, tmp.den, tmp.num);
- }
- case AV_OPT_TYPE_PIXEL_FMT:
- return set_string_pixel_fmt(obj, o, val, dst);
- case AV_OPT_TYPE_SAMPLE_FMT:
- return set_string_sample_fmt(obj, o, val, dst);
- case AV_OPT_TYPE_DURATION:
- {
- int64_t usecs = 0;
- if (val) {
- if ((ret = av_parse_time(&usecs, val, 1)) < 0) {
- av_log(obj, AV_LOG_ERROR, "Unable to parse option value \"%s\" as duration\n", val);
- return ret;
- }
- }
- if (usecs < o->min || usecs > o->max) {
- av_log(obj, AV_LOG_ERROR, "Value %f for parameter '%s' out of range [%g - %g]\n",
- usecs / 1000000.0, o->name, o->min / 1000000.0, o->max / 1000000.0);
- return AVERROR(ERANGE);
- }
- *(int64_t *)dst = usecs;
- return 0;
- }
- case AV_OPT_TYPE_COLOR:
- return set_string_color(obj, o, val, dst);
- case AV_OPT_TYPE_CHANNEL_LAYOUT:
- if (!val || !strcmp(val, "none")) {
- *(int64_t *)dst = 0;
- } else {
- int64_t cl = av_get_channel_layout(val);
- if (!cl) {
- av_log(obj, AV_LOG_ERROR, "Unable to parse option value \"%s\" as channel layout\n", val);
- ret = AVERROR(EINVAL);
- }
- *(int64_t *)dst = cl;
- return ret;
- }
- break;
- }
- av_log(obj, AV_LOG_ERROR, "Invalid option type.\n");
- return AVERROR(EINVAL);
- }
- #define OPT_EVAL_NUMBER(name, opttype, vartype) \
- int av_opt_eval_ ## name(void *obj, const AVOption *o, \
- const char *val, vartype *name ## _out) \
- { \
- if (!o || o->type != opttype || o->flags & AV_OPT_FLAG_READONLY) \
- return AVERROR(EINVAL); \
- return set_string_number(obj, obj, o, val, name ## _out); \
- }
- OPT_EVAL_NUMBER(flags, AV_OPT_TYPE_FLAGS, int)
- OPT_EVAL_NUMBER(int, AV_OPT_TYPE_INT, int)
- OPT_EVAL_NUMBER(int64, AV_OPT_TYPE_INT64, int64_t)
- OPT_EVAL_NUMBER(float, AV_OPT_TYPE_FLOAT, float)
- OPT_EVAL_NUMBER(double, AV_OPT_TYPE_DOUBLE, double)
- OPT_EVAL_NUMBER(q, AV_OPT_TYPE_RATIONAL, AVRational)
- static int set_number(void *obj, const char *name, double num, int den, int64_t intnum,
- int search_flags)
- {
- void *dst, *target_obj;
- const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
- if (!o || !target_obj)
- return AVERROR_OPTION_NOT_FOUND;
- if (o->flags & AV_OPT_FLAG_READONLY)
- return AVERROR(EINVAL);
- dst = ((uint8_t *)target_obj) + o->offset;
- return write_number(obj, o, dst, num, den, intnum);
- }
- int av_opt_set_int(void *obj, const char *name, int64_t val, int search_flags)
- {
- return set_number(obj, name, 1, 1, val, search_flags);
- }
- int av_opt_set_double(void *obj, const char *name, double val, int search_flags)
- {
- return set_number(obj, name, val, 1, 1, search_flags);
- }
- int av_opt_set_q(void *obj, const char *name, AVRational val, int search_flags)
- {
- return set_number(obj, name, val.num, val.den, 1, search_flags);
- }
- int av_opt_set_bin(void *obj, const char *name, const uint8_t *val, int len, int search_flags)
- {
- void *target_obj;
- const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
- uint8_t *ptr;
- uint8_t **dst;
- int *lendst;
- if (!o || !target_obj)
- return AVERROR_OPTION_NOT_FOUND;
- if (o->type != AV_OPT_TYPE_BINARY || o->flags & AV_OPT_FLAG_READONLY)
- return AVERROR(EINVAL);
- ptr = len ? av_malloc(len) : NULL;
- if (len && !ptr)
- return AVERROR(ENOMEM);
- dst = (uint8_t **)(((uint8_t *)target_obj) + o->offset);
- lendst = (int *)(dst + 1);
- av_free(*dst);
- *dst = ptr;
- *lendst = len;
- if (len)
- memcpy(ptr, val, len);
- return 0;
- }
- int av_opt_set_image_size(void *obj, const char *name, int w, int h, int search_flags)
- {
- void *target_obj;
- const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
- if (!o || !target_obj)
- return AVERROR_OPTION_NOT_FOUND;
- if (o->type != AV_OPT_TYPE_IMAGE_SIZE) {
- av_log(obj, AV_LOG_ERROR,
- "The value set by option '%s' is not an image size.\n", o->name);
- return AVERROR(EINVAL);
- }
- if (w<0 || h<0) {
- av_log(obj, AV_LOG_ERROR,
- "Invalid negative size value %dx%d for size '%s'\n", w, h, o->name);
- return AVERROR(EINVAL);
- }
- *(int *)(((uint8_t *)target_obj) + o->offset) = w;
- *(int *)(((uint8_t *)target_obj+sizeof(int)) + o->offset) = h;
- return 0;
- }
- int av_opt_set_video_rate(void *obj, const char *name, AVRational val, int search_flags)
- {
- void *target_obj;
- const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
- if (!o || !target_obj)
- return AVERROR_OPTION_NOT_FOUND;
- if (o->type != AV_OPT_TYPE_VIDEO_RATE) {
- av_log(obj, AV_LOG_ERROR,
- "The value set by option '%s' is not a video rate.\n", o->name);
- return AVERROR(EINVAL);
- }
- if (val.num <= 0 || val.den <= 0)
- return AVERROR(EINVAL);
- return set_number(obj, name, val.num, val.den, 1, search_flags);
- }
- static int set_format(void *obj, const char *name, int fmt, int search_flags,
- enum AVOptionType type, const char *desc, int nb_fmts)
- {
- void *target_obj;
- const AVOption *o = av_opt_find2(obj, name, NULL, 0,
- search_flags, &target_obj);
- int min, max;
- if (!o || !target_obj)
- return AVERROR_OPTION_NOT_FOUND;
- if (o->type != type) {
- av_log(obj, AV_LOG_ERROR,
- "The value set by option '%s' is not a %s format", name, desc);
- return AVERROR(EINVAL);
- }
- min = FFMAX(o->min, -1);
- max = FFMIN(o->max, nb_fmts-1);
- if (fmt < min || fmt > max) {
- av_log(obj, AV_LOG_ERROR,
- "Value %d for parameter '%s' out of %s format range [%d - %d]\n",
- fmt, name, desc, min, max);
- return AVERROR(ERANGE);
- }
- *(int *)(((uint8_t *)target_obj) + o->offset) = fmt;
- return 0;
- }
- int av_opt_set_pixel_fmt(void *obj, const char *name, enum AVPixelFormat fmt, int search_flags)
- {
- return set_format(obj, name, fmt, search_flags, AV_OPT_TYPE_PIXEL_FMT, "pixel", AV_PIX_FMT_NB);
- }
- int av_opt_set_sample_fmt(void *obj, const char *name, enum AVSampleFormat fmt, int search_flags)
- {
- return set_format(obj, name, fmt, search_flags, AV_OPT_TYPE_SAMPLE_FMT, "sample", AV_SAMPLE_FMT_NB);
- }
- int av_opt_set_channel_layout(void *obj, const char *name, int64_t cl, int search_flags)
- {
- void *target_obj;
- const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
- if (!o || !target_obj)
- return AVERROR_OPTION_NOT_FOUND;
- if (o->type != AV_OPT_TYPE_CHANNEL_LAYOUT) {
- av_log(obj, AV_LOG_ERROR,
- "The value set by option '%s' is not a channel layout.\n", o->name);
- return AVERROR(EINVAL);
- }
- *(int64_t *)(((uint8_t *)target_obj) + o->offset) = cl;
- return 0;
- }
- int av_opt_set_dict_val(void *obj, const char *name, const AVDictionary *val,
- int search_flags)
- {
- void *target_obj;
- AVDictionary **dst;
- const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
- if (!o || !target_obj)
- return AVERROR_OPTION_NOT_FOUND;
- if (o->flags & AV_OPT_FLAG_READONLY)
- return AVERROR(EINVAL);
- dst = (AVDictionary **)(((uint8_t *)target_obj) + o->offset);
- av_dict_free(dst);
- av_dict_copy(dst, val, 0);
- return 0;
- }
- static void format_duration(char *buf, size_t size, int64_t d)
- {
- char *e;
- av_assert0(size >= 25);
- if (d < 0 && d != INT64_MIN) {
- *(buf++) = '-';
- size--;
- d = -d;
- }
- if (d == INT64_MAX)
- snprintf(buf, size, "INT64_MAX");
- else if (d == INT64_MIN)
- snprintf(buf, size, "INT64_MIN");
- else if (d > (int64_t)3600*1000000)
- snprintf(buf, size, "%"PRId64":%02d:%02d.%06d", d / 3600000000,
- (int)((d / 60000000) % 60),
- (int)((d / 1000000) % 60),
- (int)(d % 1000000));
- else if (d > 60*1000000)
- snprintf(buf, size, "%d:%02d.%06d",
- (int)(d / 60000000),
- (int)((d / 1000000) % 60),
- (int)(d % 1000000));
- else
- snprintf(buf, size, "%d.%06d",
- (int)(d / 1000000),
- (int)(d % 1000000));
- e = buf + strlen(buf);
- while (e > buf && e[-1] == '0')
- *(--e) = 0;
- if (e > buf && e[-1] == '.')
- *(--e) = 0;
- }
- int av_opt_get(void *obj, const char *name, int search_flags, uint8_t **out_val)
- {
- void *dst, *target_obj;
- const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
- uint8_t *bin, buf[128];
- int len, i, ret;
- int64_t i64;
- if (!o || !target_obj || (o->offset<=0 && o->type != AV_OPT_TYPE_CONST))
- return AVERROR_OPTION_NOT_FOUND;
- if (o->flags & AV_OPT_FLAG_DEPRECATED)
- av_log(obj, AV_LOG_WARNING, "The \"%s\" option is deprecated: %s\n", name, o->help);
- dst = (uint8_t *)target_obj + o->offset;
- buf[0] = 0;
- switch (o->type) {
- case AV_OPT_TYPE_BOOL:
- ret = snprintf(buf, sizeof(buf), "%s", (char *)av_x_if_null(get_bool_name(*(int *)dst), "invalid"));
- break;
- case AV_OPT_TYPE_FLAGS:
- ret = snprintf(buf, sizeof(buf), "0x%08X", *(int *)dst);
- break;
- case AV_OPT_TYPE_INT:
- ret = snprintf(buf, sizeof(buf), "%d", *(int *)dst);
- break;
- case AV_OPT_TYPE_INT64:
- ret = snprintf(buf, sizeof(buf), "%"PRId64, *(int64_t *)dst);
- break;
- case AV_OPT_TYPE_UINT64:
- ret = snprintf(buf, sizeof(buf), "%"PRIu64, *(uint64_t *)dst);
- break;
- case AV_OPT_TYPE_FLOAT:
- ret = snprintf(buf, sizeof(buf), "%f", *(float *)dst);
- break;
- case AV_OPT_TYPE_DOUBLE:
- ret = snprintf(buf, sizeof(buf), "%f", *(double *)dst);
- break;
- case AV_OPT_TYPE_VIDEO_RATE:
- case AV_OPT_TYPE_RATIONAL:
- ret = snprintf(buf, sizeof(buf), "%d/%d", ((AVRational *)dst)->num, ((AVRational *)dst)->den);
- break;
- case AV_OPT_TYPE_CONST:
- ret = snprintf(buf, sizeof(buf), "%f", o->default_val.dbl);
- break;
- case AV_OPT_TYPE_STRING:
- if (*(uint8_t **)dst) {
- *out_val = av_strdup(*(uint8_t **)dst);
- } else if (search_flags & AV_OPT_ALLOW_NULL) {
- *out_val = NULL;
- return 0;
- } else {
- *out_val = av_strdup("");
- }
- return *out_val ? 0 : AVERROR(ENOMEM);
- case AV_OPT_TYPE_BINARY:
- if (!*(uint8_t **)dst && (search_flags & AV_OPT_ALLOW_NULL)) {
- *out_val = NULL;
- return 0;
- }
- len = *(int *)(((uint8_t *)dst) + sizeof(uint8_t *));
- if ((uint64_t)len * 2 + 1 > INT_MAX)
- return AVERROR(EINVAL);
- if (!(*out_val = av_malloc(len * 2 + 1)))
- return AVERROR(ENOMEM);
- if (!len) {
- *out_val[0] = '\0';
- return 0;
- }
- bin = *(uint8_t **)dst;
- for (i = 0; i < len; i++)
- snprintf(*out_val + i * 2, 3, "%02X", bin[i]);
- return 0;
- case AV_OPT_TYPE_IMAGE_SIZE:
- ret = snprintf(buf, sizeof(buf), "%dx%d", ((int *)dst)[0], ((int *)dst)[1]);
- break;
- case AV_OPT_TYPE_PIXEL_FMT:
- ret = snprintf(buf, sizeof(buf), "%s", (char *)av_x_if_null(av_get_pix_fmt_name(*(enum AVPixelFormat *)dst), "none"));
- break;
- case AV_OPT_TYPE_SAMPLE_FMT:
- ret = snprintf(buf, sizeof(buf), "%s", (char *)av_x_if_null(av_get_sample_fmt_name(*(enum AVSampleFormat *)dst), "none"));
- break;
- case AV_OPT_TYPE_DURATION:
- i64 = *(int64_t *)dst;
- format_duration(buf, sizeof(buf), i64);
- ret = strlen(buf); // no overflow possible, checked by an assert
- break;
- case AV_OPT_TYPE_COLOR:
- ret = snprintf(buf, sizeof(buf), "0x%02x%02x%02x%02x",
- (int)((uint8_t *)dst)[0], (int)((uint8_t *)dst)[1],
- (int)((uint8_t *)dst)[2], (int)((uint8_t *)dst)[3]);
- break;
- case AV_OPT_TYPE_CHANNEL_LAYOUT:
- i64 = *(int64_t *)dst;
- ret = snprintf(buf, sizeof(buf), "0x%"PRIx64, i64);
- break;
- default:
- return AVERROR(EINVAL);
- }
- if (ret >= sizeof(buf))
- return AVERROR(EINVAL);
- *out_val = av_strdup(buf);
- return *out_val ? 0 : AVERROR(ENOMEM);
- }
- static int get_number(void *obj, const char *name, const AVOption **o_out, double *num, int *den, int64_t *intnum,
- int search_flags)
- {
- void *dst, *target_obj;
- const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
- if (!o || !target_obj)
- goto error;
- dst = ((uint8_t *)target_obj) + o->offset;
- if (o_out) *o_out= o;
- return read_number(o, dst, num, den, intnum);
- error:
- *den =
- *intnum = 0;
- return -1;
- }
- int av_opt_get_int(void *obj, const char *name, int search_flags, int64_t *out_val)
- {
- int64_t intnum = 1;
- double num = 1;
- int ret, den = 1;
- if ((ret = get_number(obj, name, NULL, &num, &den, &intnum, search_flags)) < 0)
- return ret;
- *out_val = num * intnum / den;
- return 0;
- }
- int av_opt_get_double(void *obj, const char *name, int search_flags, double *out_val)
- {
- int64_t intnum = 1;
- double num = 1;
- int ret, den = 1;
- if ((ret = get_number(obj, name, NULL, &num, &den, &intnum, search_flags)) < 0)
- return ret;
- *out_val = num * intnum / den;
- return 0;
- }
- int av_opt_get_q(void *obj, const char *name, int search_flags, AVRational *out_val)
- {
- int64_t intnum = 1;
- double num = 1;
- int ret, den = 1;
- if ((ret = get_number(obj, name, NULL, &num, &den, &intnum, search_flags)) < 0)
- return ret;
- if (num == 1.0 && (int)intnum == intnum)
- *out_val = (AVRational){intnum, den};
- else
- *out_val = av_d2q(num*intnum/den, 1<<24);
- return 0;
- }
- int av_opt_get_image_size(void *obj, const char *name, int search_flags, int *w_out, int *h_out)
- {
- void *dst, *target_obj;
- const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
- if (!o || !target_obj)
- return AVERROR_OPTION_NOT_FOUND;
- if (o->type != AV_OPT_TYPE_IMAGE_SIZE) {
- av_log(obj, AV_LOG_ERROR,
- "The value for option '%s' is not an image size.\n", name);
- return AVERROR(EINVAL);
- }
- dst = ((uint8_t*)target_obj) + o->offset;
- if (w_out) *w_out = *(int *)dst;
- if (h_out) *h_out = *((int *)dst+1);
- return 0;
- }
- int av_opt_get_video_rate(void *obj, const char *name, int search_flags, AVRational *out_val)
- {
- int64_t intnum = 1;
- double num = 1;
- int ret, den = 1;
- if ((ret = get_number(obj, name, NULL, &num, &den, &intnum, search_flags)) < 0)
- return ret;
- if (num == 1.0 && (int)intnum == intnum)
- *out_val = (AVRational) { intnum, den };
- else
- *out_val = av_d2q(num * intnum / den, 1 << 24);
- return 0;
- }
- static int get_format(void *obj, const char *name, int search_flags, int *out_fmt,
- enum AVOptionType type, const char *desc)
- {
- void *dst, *target_obj;
- const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
- if (!o || !target_obj)
- return AVERROR_OPTION_NOT_FOUND;
- if (o->type != type) {
- av_log(obj, AV_LOG_ERROR,
- "The value for option '%s' is not a %s format.\n", desc, name);
- return AVERROR(EINVAL);
- }
- dst = ((uint8_t*)target_obj) + o->offset;
- *out_fmt = *(int *)dst;
- return 0;
- }
- int av_opt_get_pixel_fmt(void *obj, const char *name, int search_flags, enum AVPixelFormat *out_fmt)
- {
- return get_format(obj, name, search_flags, out_fmt, AV_OPT_TYPE_PIXEL_FMT, "pixel");
- }
- int av_opt_get_sample_fmt(void *obj, const char *name, int search_flags, enum AVSampleFormat *out_fmt)
- {
- return get_format(obj, name, search_flags, out_fmt, AV_OPT_TYPE_SAMPLE_FMT, "sample");
- }
- int av_opt_get_channel_layout(void *obj, const char *name, int search_flags, int64_t *cl)
- {
- void *dst, *target_obj;
- const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
- if (!o || !target_obj)
- return AVERROR_OPTION_NOT_FOUND;
- if (o->type != AV_OPT_TYPE_CHANNEL_LAYOUT) {
- av_log(obj, AV_LOG_ERROR,
- "The value for option '%s' is not a channel layout.\n", name);
- return AVERROR(EINVAL);
- }
- dst = ((uint8_t*)target_obj) + o->offset;
- *cl = *(int64_t *)dst;
- return 0;
- }
- int av_opt_get_dict_val(void *obj, const char *name, int search_flags, AVDictionary **out_val)
- {
- void *target_obj;
- AVDictionary *src;
- const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
- if (!o || !target_obj)
- return AVERROR_OPTION_NOT_FOUND;
- if (o->type != AV_OPT_TYPE_DICT)
- return AVERROR(EINVAL);
- src = *(AVDictionary **)(((uint8_t *)target_obj) + o->offset);
- av_dict_copy(out_val, src, 0);
- return 0;
- }
- int av_opt_flag_is_set(void *obj, const char *field_name, const char *flag_name)
- {
- const AVOption *field = av_opt_find(obj, field_name, NULL, 0, 0);
- const AVOption *flag = av_opt_find(obj, flag_name,
- field ? field->unit : NULL, 0, 0);
- int64_t res;
- if (!field || !flag || flag->type != AV_OPT_TYPE_CONST ||
- av_opt_get_int(obj, field_name, 0, &res) < 0)
- return 0;
- return res & flag->default_val.i64;
- }
- static void log_value(void *av_log_obj, int level, double d)
- {
- if (d == INT_MAX) {
- av_log(av_log_obj, level, "INT_MAX");
- } else if (d == INT_MIN) {
- av_log(av_log_obj, level, "INT_MIN");
- } else if (d == UINT32_MAX) {
- av_log(av_log_obj, level, "UINT32_MAX");
- } else if (d == (double)INT64_MAX) {
- av_log(av_log_obj, level, "I64_MAX");
- } else if (d == INT64_MIN) {
- av_log(av_log_obj, level, "I64_MIN");
- } else if (d == FLT_MAX) {
- av_log(av_log_obj, level, "FLT_MAX");
- } else if (d == FLT_MIN) {
- av_log(av_log_obj, level, "FLT_MIN");
- } else if (d == -FLT_MAX) {
- av_log(av_log_obj, level, "-FLT_MAX");
- } else if (d == -FLT_MIN) {
- av_log(av_log_obj, level, "-FLT_MIN");
- } else if (d == DBL_MAX) {
- av_log(av_log_obj, level, "DBL_MAX");
- } else if (d == DBL_MIN) {
- av_log(av_log_obj, level, "DBL_MIN");
- } else if (d == -DBL_MAX) {
- av_log(av_log_obj, level, "-DBL_MAX");
- } else if (d == -DBL_MIN) {
- av_log(av_log_obj, level, "-DBL_MIN");
- } else {
- av_log(av_log_obj, level, "%g", d);
- }
- }
- static const char *get_opt_const_name(void *obj, const char *unit, int64_t value)
- {
- const AVOption *opt = NULL;
- if (!unit)
- return NULL;
- while ((opt = av_opt_next(obj, opt)))
- if (opt->type == AV_OPT_TYPE_CONST && !strcmp(opt->unit, unit) &&
- opt->default_val.i64 == value)
- return opt->name;
- return NULL;
- }
- static char *get_opt_flags_string(void *obj, const char *unit, int64_t value)
- {
- const AVOption *opt = NULL;
- char flags[512];
- flags[0] = 0;
- if (!unit)
- return NULL;
- while ((opt = av_opt_next(obj, opt))) {
- if (opt->type == AV_OPT_TYPE_CONST && !strcmp(opt->unit, unit) &&
- opt->default_val.i64 & value) {
- if (flags[0])
- av_strlcatf(flags, sizeof(flags), "+");
- av_strlcatf(flags, sizeof(flags), "%s", opt->name);
- }
- }
- if (flags[0])
- return av_strdup(flags);
- return NULL;
- }
- static void opt_list(void *obj, void *av_log_obj, const char *unit,
- int req_flags, int rej_flags)
- {
- const AVOption *opt = NULL;
- AVOptionRanges *r;
- int i;
- while ((opt = av_opt_next(obj, opt))) {
- if (!(opt->flags & req_flags) || (opt->flags & rej_flags))
- continue;
- /* Don't print CONST's on level one.
- * Don't print anything but CONST's on level two.
- * Only print items from the requested unit.
- */
- if (!unit && opt->type == AV_OPT_TYPE_CONST)
- continue;
- else if (unit && opt->type != AV_OPT_TYPE_CONST)
- continue;
- else if (unit && opt->type == AV_OPT_TYPE_CONST && strcmp(unit, opt->unit))
- continue;
- else if (unit && opt->type == AV_OPT_TYPE_CONST)
- av_log(av_log_obj, AV_LOG_INFO, " %-15s ", opt->name);
- else
- av_log(av_log_obj, AV_LOG_INFO, " %s%-17s ",
- (opt->flags & AV_OPT_FLAG_FILTERING_PARAM) ? "" : "-",
- opt->name);
- switch (opt->type) {
- case AV_OPT_TYPE_FLAGS:
- av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<flags>");
- break;
- case AV_OPT_TYPE_INT:
- av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<int>");
- break;
- case AV_OPT_TYPE_INT64:
- av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<int64>");
- break;
- case AV_OPT_TYPE_UINT64:
- av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<uint64>");
- break;
- case AV_OPT_TYPE_DOUBLE:
- av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<double>");
- break;
- case AV_OPT_TYPE_FLOAT:
- av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<float>");
- break;
- case AV_OPT_TYPE_STRING:
- av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<string>");
- break;
- case AV_OPT_TYPE_RATIONAL:
- av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<rational>");
- break;
- case AV_OPT_TYPE_BINARY:
- av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<binary>");
- break;
- case AV_OPT_TYPE_IMAGE_SIZE:
- av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<image_size>");
- break;
- case AV_OPT_TYPE_VIDEO_RATE:
- av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<video_rate>");
- break;
- case AV_OPT_TYPE_PIXEL_FMT:
- av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<pix_fmt>");
- break;
- case AV_OPT_TYPE_SAMPLE_FMT:
- av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<sample_fmt>");
- break;
- case AV_OPT_TYPE_DURATION:
- av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<duration>");
- break;
- case AV_OPT_TYPE_COLOR:
- av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<color>");
- break;
- case AV_OPT_TYPE_CHANNEL_LAYOUT:
- av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<channel_layout>");
- break;
- case AV_OPT_TYPE_BOOL:
- av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<boolean>");
- break;
- case AV_OPT_TYPE_CONST:
- default:
- av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "");
- break;
- }
- av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_ENCODING_PARAM) ? 'E' : '.');
- av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_DECODING_PARAM) ? 'D' : '.');
- av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_FILTERING_PARAM)? 'F' : '.');
- av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_VIDEO_PARAM ) ? 'V' : '.');
- av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_AUDIO_PARAM ) ? 'A' : '.');
- av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_SUBTITLE_PARAM) ? 'S' : '.');
- av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_EXPORT) ? 'X' : '.');
- av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_READONLY) ? 'R' : '.');
- av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_BSF_PARAM) ? 'B' : '.');
- if (opt->help)
- av_log(av_log_obj, AV_LOG_INFO, " %s", opt->help);
- if (av_opt_query_ranges(&r, obj, opt->name, AV_OPT_SEARCH_FAKE_OBJ) >= 0) {
- switch (opt->type) {
- case AV_OPT_TYPE_INT:
- case AV_OPT_TYPE_INT64:
- case AV_OPT_TYPE_UINT64:
- case AV_OPT_TYPE_DOUBLE:
- case AV_OPT_TYPE_FLOAT:
- case AV_OPT_TYPE_RATIONAL:
- for (i = 0; i < r->nb_ranges; i++) {
- av_log(av_log_obj, AV_LOG_INFO, " (from ");
- log_value(av_log_obj, AV_LOG_INFO, r->range[i]->value_min);
- av_log(av_log_obj, AV_LOG_INFO, " to ");
- log_value(av_log_obj, AV_LOG_INFO, r->range[i]->value_max);
- av_log(av_log_obj, AV_LOG_INFO, ")");
- }
- break;
- }
- av_opt_freep_ranges(&r);
- }
- if (opt->type != AV_OPT_TYPE_CONST &&
- opt->type != AV_OPT_TYPE_BINARY &&
- !((opt->type == AV_OPT_TYPE_COLOR ||
- opt->type == AV_OPT_TYPE_IMAGE_SIZE ||
- opt->type == AV_OPT_TYPE_STRING ||
- opt->type == AV_OPT_TYPE_VIDEO_RATE) &&
- !opt->default_val.str)) {
- av_log(av_log_obj, AV_LOG_INFO, " (default ");
- switch (opt->type) {
- case AV_OPT_TYPE_BOOL:
- av_log(av_log_obj, AV_LOG_INFO, "%s", (char *)av_x_if_null(get_bool_name(opt->default_val.i64), "invalid"));
- break;
- case AV_OPT_TYPE_FLAGS: {
- char *def_flags = get_opt_flags_string(obj, opt->unit, opt->default_val.i64);
- if (def_flags) {
- av_log(av_log_obj, AV_LOG_INFO, "%s", def_flags);
- av_freep(&def_flags);
- } else {
- av_log(av_log_obj, AV_LOG_INFO, "%"PRIX64, opt->default_val.i64);
- }
- break;
- }
- case AV_OPT_TYPE_DURATION: {
- char buf[25];
- format_duration(buf, sizeof(buf), opt->default_val.i64);
- av_log(av_log_obj, AV_LOG_INFO, "%s", buf);
- break;
- }
- case AV_OPT_TYPE_INT:
- case AV_OPT_TYPE_UINT64:
- case AV_OPT_TYPE_INT64: {
- const char *def_const = get_opt_const_name(obj, opt->unit, opt->default_val.i64);
- if (def_const)
- av_log(av_log_obj, AV_LOG_INFO, "%s", def_const);
- else
- log_value(av_log_obj, AV_LOG_INFO, opt->default_val.i64);
- break;
- }
- case AV_OPT_TYPE_DOUBLE:
- case AV_OPT_TYPE_FLOAT:
- log_value(av_log_obj, AV_LOG_INFO, opt->default_val.dbl);
- break;
- case AV_OPT_TYPE_RATIONAL: {
- AVRational q = av_d2q(opt->default_val.dbl, INT_MAX);
- av_log(av_log_obj, AV_LOG_INFO, "%d/%d", q.num, q.den); }
- break;
- case AV_OPT_TYPE_PIXEL_FMT:
- av_log(av_log_obj, AV_LOG_INFO, "%s", (char *)av_x_if_null(av_get_pix_fmt_name(opt->default_val.i64), "none"));
- break;
- case AV_OPT_TYPE_SAMPLE_FMT:
- av_log(av_log_obj, AV_LOG_INFO, "%s", (char *)av_x_if_null(av_get_sample_fmt_name(opt->default_val.i64), "none"));
- break;
- case AV_OPT_TYPE_COLOR:
- case AV_OPT_TYPE_IMAGE_SIZE:
- case AV_OPT_TYPE_STRING:
- case AV_OPT_TYPE_VIDEO_RATE:
- av_log(av_log_obj, AV_LOG_INFO, "\"%s\"", opt->default_val.str);
- break;
- case AV_OPT_TYPE_CHANNEL_LAYOUT:
- av_log(av_log_obj, AV_LOG_INFO, "0x%"PRIx64, opt->default_val.i64);
- break;
- }
- av_log(av_log_obj, AV_LOG_INFO, ")");
- }
- av_log(av_log_obj, AV_LOG_INFO, "\n");
- if (opt->unit && opt->type != AV_OPT_TYPE_CONST)
- opt_list(obj, av_log_obj, opt->unit, req_flags, rej_flags);
- }
- }
- int av_opt_show2(void *obj, void *av_log_obj, int req_flags, int rej_flags)
- {
- if (!obj)
- return -1;
- av_log(av_log_obj, AV_LOG_INFO, "%s AVOptions:\n", (*(AVClass **)obj)->class_name);
- opt_list(obj, av_log_obj, NULL, req_flags, rej_flags);
- return 0;
- }
- void av_opt_set_defaults(void *s)
- {
- av_opt_set_defaults2(s, 0, 0);
- }
- void av_opt_set_defaults2(void *s, int mask, int flags)
- {
- const AVOption *opt = NULL;
- while ((opt = av_opt_next(s, opt))) {
- void *dst = ((uint8_t*)s) + opt->offset;
- if ((opt->flags & mask) != flags)
- continue;
- if (opt->flags & AV_OPT_FLAG_READONLY)
- continue;
- switch (opt->type) {
- case AV_OPT_TYPE_CONST:
- /* Nothing to be done here */
- break;
- case AV_OPT_TYPE_BOOL:
- case AV_OPT_TYPE_FLAGS:
- case AV_OPT_TYPE_INT:
- case AV_OPT_TYPE_INT64:
- case AV_OPT_TYPE_UINT64:
- case AV_OPT_TYPE_DURATION:
- case AV_OPT_TYPE_CHANNEL_LAYOUT:
- case AV_OPT_TYPE_PIXEL_FMT:
- case AV_OPT_TYPE_SAMPLE_FMT:
- write_number(s, opt, dst, 1, 1, opt->default_val.i64);
- break;
- case AV_OPT_TYPE_DOUBLE:
- case AV_OPT_TYPE_FLOAT: {
- double val;
- val = opt->default_val.dbl;
- write_number(s, opt, dst, val, 1, 1);
- }
- break;
- case AV_OPT_TYPE_RATIONAL: {
- AVRational val;
- val = av_d2q(opt->default_val.dbl, INT_MAX);
- write_number(s, opt, dst, 1, val.den, val.num);
- }
- break;
- case AV_OPT_TYPE_COLOR:
- set_string_color(s, opt, opt->default_val.str, dst);
- break;
- case AV_OPT_TYPE_STRING:
- set_string(s, opt, opt->default_val.str, dst);
- break;
- case AV_OPT_TYPE_IMAGE_SIZE:
- set_string_image_size(s, opt, opt->default_val.str, dst);
- break;
- case AV_OPT_TYPE_VIDEO_RATE:
- set_string_video_rate(s, opt, opt->default_val.str, dst);
- break;
- case AV_OPT_TYPE_BINARY:
- set_string_binary(s, opt, opt->default_val.str, dst);
- break;
- case AV_OPT_TYPE_DICT:
- /* Cannot set defaults for these types */
- break;
- default:
- av_log(s, AV_LOG_DEBUG, "AVOption type %d of option %s not implemented yet\n",
- opt->type, opt->name);
- }
- }
- }
- /**
- * Store the value in the field in ctx that is named like key.
- * ctx must be an AVClass context, storing is done using AVOptions.
- *
- * @param buf the string to parse, buf will be updated to point at the
- * separator just after the parsed key/value pair
- * @param key_val_sep a 0-terminated list of characters used to
- * separate key from value
- * @param pairs_sep a 0-terminated list of characters used to separate
- * two pairs from each other
- * @return 0 if the key/value pair has been successfully parsed and
- * set, or a negative value corresponding to an AVERROR code in case
- * of error:
- * AVERROR(EINVAL) if the key/value pair cannot be parsed,
- * the error code issued by av_opt_set() if the key/value pair
- * cannot be set
- */
- static int parse_key_value_pair(void *ctx, const char **buf,
- const char *key_val_sep, const char *pairs_sep)
- {
- char *key = av_get_token(buf, key_val_sep);
- char *val;
- int ret;
- if (!key)
- return AVERROR(ENOMEM);
- if (*key && strspn(*buf, key_val_sep)) {
- (*buf)++;
- val = av_get_token(buf, pairs_sep);
- if (!val) {
- av_freep(&key);
- return AVERROR(ENOMEM);
- }
- } else {
- av_log(ctx, AV_LOG_ERROR, "Missing key or no key/value separator found after key '%s'\n", key);
- av_free(key);
- return AVERROR(EINVAL);
- }
- av_log(ctx, AV_LOG_DEBUG, "Setting entry with key '%s' to value '%s'\n", key, val);
- ret = av_opt_set(ctx, key, val, AV_OPT_SEARCH_CHILDREN);
- if (ret == AVERROR_OPTION_NOT_FOUND)
- av_log(ctx, AV_LOG_ERROR, "Key '%s' not found.\n", key);
- av_free(key);
- av_free(val);
- return ret;
- }
- int av_set_options_string(void *ctx, const char *opts,
- const char *key_val_sep, const char *pairs_sep)
- {
- int ret, count = 0;
- if (!opts)
- return 0;
- while (*opts) {
- if ((ret = parse_key_value_pair(ctx, &opts, key_val_sep, pairs_sep)) < 0)
- return ret;
- count++;
- if (*opts)
- opts++;
- }
- return count;
- }
- #define WHITESPACES " \n\t\r"
- static int is_key_char(char c)
- {
- return (unsigned)((c | 32) - 'a') < 26 ||
- (unsigned)(c - '0') < 10 ||
- c == '-' || c == '_' || c == '/' || c == '.';
- }
- /**
- * Read a key from a string.
- *
- * The key consists of is_key_char characters and must be terminated by a
- * character from the delim string; spaces are ignored.
- *
- * @return 0 for success (even with ellipsis), <0 for failure
- */
- static int get_key(const char **ropts, const char *delim, char **rkey)
- {
- const char *opts = *ropts;
- const char *key_start, *key_end;
- key_start = opts += strspn(opts, WHITESPACES);
- while (is_key_char(*opts))
- opts++;
- key_end = opts;
- opts += strspn(opts, WHITESPACES);
- if (!*opts || !strchr(delim, *opts))
- return AVERROR(EINVAL);
- opts++;
- if (!(*rkey = av_malloc(key_end - key_start + 1)))
- return AVERROR(ENOMEM);
- memcpy(*rkey, key_start, key_end - key_start);
- (*rkey)[key_end - key_start] = 0;
- *ropts = opts;
- return 0;
- }
- int av_opt_get_key_value(const char **ropts,
- const char *key_val_sep, const char *pairs_sep,
- unsigned flags,
- char **rkey, char **rval)
- {
- int ret;
- char *key = NULL, *val;
- const char *opts = *ropts;
- if ((ret = get_key(&opts, key_val_sep, &key)) < 0 &&
- !(flags & AV_OPT_FLAG_IMPLICIT_KEY))
- return AVERROR(EINVAL);
- if (!(val = av_get_token(&opts, pairs_sep))) {
- av_free(key);
- return AVERROR(ENOMEM);
- }
- *ropts = opts;
- *rkey = key;
- *rval = val;
- return 0;
- }
- int av_opt_set_from_string(void *ctx, const char *opts,
- const char *const *shorthand,
- const char *key_val_sep, const char *pairs_sep)
- {
- int ret, count = 0;
- const char *dummy_shorthand = NULL;
- char *av_uninit(parsed_key), *av_uninit(value);
- const char *key;
- if (!opts)
- return 0;
- if (!shorthand)
- shorthand = &dummy_shorthand;
- while (*opts) {
- ret = av_opt_get_key_value(&opts, key_val_sep, pairs_sep,
- *shorthand ? AV_OPT_FLAG_IMPLICIT_KEY : 0,
- &parsed_key, &value);
- if (ret < 0) {
- if (ret == AVERROR(EINVAL))
- av_log(ctx, AV_LOG_ERROR, "No option name near '%s'\n", opts);
- else
- av_log(ctx, AV_LOG_ERROR, "Unable to parse '%s': %s\n", opts,
- av_err2str(ret));
- return ret;
- }
- if (*opts)
- opts++;
- if (parsed_key) {
- key = parsed_key;
- while (*shorthand) /* discard all remaining shorthand */
- shorthand++;
- } else {
- key = *(shorthand++);
- }
- av_log(ctx, AV_LOG_DEBUG, "Setting '%s' to value '%s'\n", key, value);
- if ((ret = av_opt_set(ctx, key, value, 0)) < 0) {
- if (ret == AVERROR_OPTION_NOT_FOUND)
- av_log(ctx, AV_LOG_ERROR, "Option '%s' not found\n", key);
- av_free(value);
- av_free(parsed_key);
- return ret;
- }
- av_free(value);
- av_free(parsed_key);
- count++;
- }
- return count;
- }
- void av_opt_free(void *obj)
- {
- const AVOption *o = NULL;
- while ((o = av_opt_next(obj, o))) {
- switch (o->type) {
- case AV_OPT_TYPE_STRING:
- case AV_OPT_TYPE_BINARY:
- av_freep((uint8_t *)obj + o->offset);
- break;
- case AV_OPT_TYPE_DICT:
- av_dict_free((AVDictionary **)(((uint8_t *)obj) + o->offset));
- break;
- default:
- break;
- }
- }
- }
- int av_opt_set_dict2(void *obj, AVDictionary **options, int search_flags)
- {
- AVDictionaryEntry *t = NULL;
- AVDictionary *tmp = NULL;
- int ret = 0;
- if (!options)
- return 0;
- while ((t = av_dict_get(*options, "", t, AV_DICT_IGNORE_SUFFIX))) {
- ret = av_opt_set(obj, t->key, t->value, search_flags);
- if (ret == AVERROR_OPTION_NOT_FOUND)
- ret = av_dict_set(&tmp, t->key, t->value, 0);
- if (ret < 0) {
- av_log(obj, AV_LOG_ERROR, "Error setting option %s to value %s.\n", t->key, t->value);
- av_dict_free(&tmp);
- return ret;
- }
- ret = 0;
- }
- av_dict_free(options);
- *options = tmp;
- return ret;
- }
- int av_opt_set_dict(void *obj, AVDictionary **options)
- {
- return av_opt_set_dict2(obj, options, 0);
- }
- const AVOption *av_opt_find(void *obj, const char *name, const char *unit,
- int opt_flags, int search_flags)
- {
- return av_opt_find2(obj, name, unit, opt_flags, search_flags, NULL);
- }
- const AVOption *av_opt_find2(void *obj, const char *name, const char *unit,
- int opt_flags, int search_flags, void **target_obj)
- {
- const AVClass *c;
- const AVOption *o = NULL;
- if(!obj)
- return NULL;
- c= *(AVClass**)obj;
- if (!c)
- return NULL;
- if (search_flags & AV_OPT_SEARCH_CHILDREN) {
- if (search_flags & AV_OPT_SEARCH_FAKE_OBJ) {
- const AVClass *child = NULL;
- while (child = av_opt_child_class_next(c, child))
- if (o = av_opt_find2(&child, name, unit, opt_flags, search_flags, NULL))
- return o;
- } else {
- void *child = NULL;
- while (child = av_opt_child_next(obj, child))
- if (o = av_opt_find2(child, name, unit, opt_flags, search_flags, target_obj))
- return o;
- }
- }
- while (o = av_opt_next(obj, o)) {
- if (!strcmp(o->name, name) && (o->flags & opt_flags) == opt_flags &&
- ((!unit && o->type != AV_OPT_TYPE_CONST) ||
- (unit && o->type == AV_OPT_TYPE_CONST && o->unit && !strcmp(o->unit, unit)))) {
- if (target_obj) {
- if (!(search_flags & AV_OPT_SEARCH_FAKE_OBJ))
- *target_obj = obj;
- else
- *target_obj = NULL;
- }
- return o;
- }
- }
- return NULL;
- }
- void *av_opt_child_next(void *obj, void *prev)
- {
- const AVClass *c = *(AVClass **)obj;
- if (c->child_next)
- return c->child_next(obj, prev);
- return NULL;
- }
- const AVClass *av_opt_child_class_next(const AVClass *parent, const AVClass *prev)
- {
- if (parent->child_class_next)
- return parent->child_class_next(prev);
- return NULL;
- }
- void *av_opt_ptr(const AVClass *class, void *obj, const char *name)
- {
- const AVOption *opt= av_opt_find2(&class, name, NULL, 0, AV_OPT_SEARCH_FAKE_OBJ, NULL);
- if(!opt)
- return NULL;
- return (uint8_t*)obj + opt->offset;
- }
- static int opt_size(enum AVOptionType type)
- {
- switch(type) {
- case AV_OPT_TYPE_BOOL:
- case AV_OPT_TYPE_INT:
- case AV_OPT_TYPE_FLAGS:
- return sizeof(int);
- case AV_OPT_TYPE_DURATION:
- case AV_OPT_TYPE_CHANNEL_LAYOUT:
- case AV_OPT_TYPE_INT64:
- case AV_OPT_TYPE_UINT64:
- return sizeof(int64_t);
- case AV_OPT_TYPE_DOUBLE:
- return sizeof(double);
- case AV_OPT_TYPE_FLOAT:
- return sizeof(float);
- case AV_OPT_TYPE_STRING:
- return sizeof(uint8_t*);
- case AV_OPT_TYPE_VIDEO_RATE:
- case AV_OPT_TYPE_RATIONAL:
- return sizeof(AVRational);
- case AV_OPT_TYPE_BINARY:
- return sizeof(uint8_t*) + sizeof(int);
- case AV_OPT_TYPE_IMAGE_SIZE:
- return sizeof(int[2]);
- case AV_OPT_TYPE_PIXEL_FMT:
- return sizeof(enum AVPixelFormat);
- case AV_OPT_TYPE_SAMPLE_FMT:
- return sizeof(enum AVSampleFormat);
- case AV_OPT_TYPE_COLOR:
- return 4;
- }
- return AVERROR(EINVAL);
- }
- int av_opt_copy(void *dst, const void *src)
- {
- const AVOption *o = NULL;
- const AVClass *c;
- int ret = 0;
- if (!src)
- return AVERROR(EINVAL);
- c = *(AVClass **)src;
- if (!c || c != *(AVClass **)dst)
- return AVERROR(EINVAL);
- while ((o = av_opt_next(src, o))) {
- void *field_dst = (uint8_t *)dst + o->offset;
- void *field_src = (uint8_t *)src + o->offset;
- uint8_t **field_dst8 = (uint8_t **)field_dst;
- uint8_t **field_src8 = (uint8_t **)field_src;
- if (o->type == AV_OPT_TYPE_STRING) {
- if (*field_dst8 != *field_src8)
- av_freep(field_dst8);
- *field_dst8 = av_strdup(*field_src8);
- if (*field_src8 && !*field_dst8)
- ret = AVERROR(ENOMEM);
- } else if (o->type == AV_OPT_TYPE_BINARY) {
- int len = *(int *)(field_src8 + 1);
- if (*field_dst8 != *field_src8)
- av_freep(field_dst8);
- *field_dst8 = av_memdup(*field_src8, len);
- if (len && !*field_dst8) {
- ret = AVERROR(ENOMEM);
- len = 0;
- }
- *(int *)(field_dst8 + 1) = len;
- } else if (o->type == AV_OPT_TYPE_CONST) {
- // do nothing
- } else if (o->type == AV_OPT_TYPE_DICT) {
- AVDictionary **sdict = (AVDictionary **) field_src;
- AVDictionary **ddict = (AVDictionary **) field_dst;
- if (*sdict != *ddict)
- av_dict_free(ddict);
- *ddict = NULL;
- av_dict_copy(ddict, *sdict, 0);
- if (av_dict_count(*sdict) != av_dict_count(*ddict))
- ret = AVERROR(ENOMEM);
- } else {
- int size = opt_size(o->type);
- if (size < 0)
- ret = size;
- else
- memcpy(field_dst, field_src, size);
- }
- }
- return ret;
- }
- int av_opt_query_ranges(AVOptionRanges **ranges_arg, void *obj, const char *key, int flags)
- {
- int ret;
- const AVClass *c = *(AVClass**)obj;
- int (*callback)(AVOptionRanges **, void *obj, const char *key, int flags) = NULL;
- if (c->version > (52 << 16 | 11 << 8))
- callback = c->query_ranges;
- if (!callback)
- callback = av_opt_query_ranges_default;
- ret = callback(ranges_arg, obj, key, flags);
- if (ret >= 0) {
- if (!(flags & AV_OPT_MULTI_COMPONENT_RANGE))
- ret = 1;
- (*ranges_arg)->nb_components = ret;
- }
- return ret;
- }
- int av_opt_query_ranges_default(AVOptionRanges **ranges_arg, void *obj, const char *key, int flags)
- {
- AVOptionRanges *ranges = av_mallocz(sizeof(*ranges));
- AVOptionRange **range_array = av_mallocz(sizeof(void*));
- AVOptionRange *range = av_mallocz(sizeof(*range));
- const AVOption *field = av_opt_find(obj, key, NULL, 0, flags);
- int ret;
- *ranges_arg = NULL;
- if (!ranges || !range || !range_array || !field) {
- ret = AVERROR(ENOMEM);
- goto fail;
- }
- ranges->range = range_array;
- ranges->range[0] = range;
- ranges->nb_ranges = 1;
- ranges->nb_components = 1;
- range->is_range = 1;
- range->value_min = field->min;
- range->value_max = field->max;
- switch (field->type) {
- case AV_OPT_TYPE_BOOL:
- case AV_OPT_TYPE_INT:
- case AV_OPT_TYPE_INT64:
- case AV_OPT_TYPE_UINT64:
- case AV_OPT_TYPE_PIXEL_FMT:
- case AV_OPT_TYPE_SAMPLE_FMT:
- case AV_OPT_TYPE_FLOAT:
- case AV_OPT_TYPE_DOUBLE:
- case AV_OPT_TYPE_DURATION:
- case AV_OPT_TYPE_COLOR:
- case AV_OPT_TYPE_CHANNEL_LAYOUT:
- break;
- case AV_OPT_TYPE_STRING:
- range->component_min = 0;
- range->component_max = 0x10FFFF; // max unicode value
- range->value_min = -1;
- range->value_max = INT_MAX;
- break;
- case AV_OPT_TYPE_RATIONAL:
- range->component_min = INT_MIN;
- range->component_max = INT_MAX;
- break;
- case AV_OPT_TYPE_IMAGE_SIZE:
- range->component_min = 0;
- range->component_max = INT_MAX/128/8;
- range->value_min = 0;
- range->value_max = INT_MAX/8;
- break;
- case AV_OPT_TYPE_VIDEO_RATE:
- range->component_min = 1;
- range->component_max = INT_MAX;
- range->value_min = 1;
- range->value_max = INT_MAX;
- break;
- default:
- ret = AVERROR(ENOSYS);
- goto fail;
- }
- *ranges_arg = ranges;
- return 1;
- fail:
- av_free(ranges);
- av_free(range);
- av_free(range_array);
- return ret;
- }
- void av_opt_freep_ranges(AVOptionRanges **rangesp)
- {
- int i;
- AVOptionRanges *ranges = *rangesp;
- if (!ranges)
- return;
- for (i = 0; i < ranges->nb_ranges * ranges->nb_components; i++) {
- AVOptionRange *range = ranges->range[i];
- if (range) {
- av_freep(&range->str);
- av_freep(&ranges->range[i]);
- }
- }
- av_freep(&ranges->range);
- av_freep(rangesp);
- }
- int av_opt_is_set_to_default(void *obj, const AVOption *o)
- {
- int64_t i64;
- double d, d2;
- float f;
- AVRational q;
- int ret, w, h;
- char *str;
- void *dst;
- if (!o || !obj)
- return AVERROR(EINVAL);
- dst = ((uint8_t*)obj) + o->offset;
- switch (o->type) {
- case AV_OPT_TYPE_CONST:
- return 1;
- case AV_OPT_TYPE_BOOL:
- case AV_OPT_TYPE_FLAGS:
- case AV_OPT_TYPE_PIXEL_FMT:
- case AV_OPT_TYPE_SAMPLE_FMT:
- case AV_OPT_TYPE_INT:
- case AV_OPT_TYPE_CHANNEL_LAYOUT:
- case AV_OPT_TYPE_DURATION:
- case AV_OPT_TYPE_INT64:
- case AV_OPT_TYPE_UINT64:
- read_number(o, dst, NULL, NULL, &i64);
- return o->default_val.i64 == i64;
- case AV_OPT_TYPE_STRING:
- str = *(char **)dst;
- if (str == o->default_val.str) //2 NULLs
- return 1;
- if (!str || !o->default_val.str) //1 NULL
- return 0;
- return !strcmp(str, o->default_val.str);
- case AV_OPT_TYPE_DOUBLE:
- read_number(o, dst, &d, NULL, NULL);
- return o->default_val.dbl == d;
- case AV_OPT_TYPE_FLOAT:
- read_number(o, dst, &d, NULL, NULL);
- f = o->default_val.dbl;
- d2 = f;
- return d2 == d;
- case AV_OPT_TYPE_RATIONAL:
- q = av_d2q(o->default_val.dbl, INT_MAX);
- return !av_cmp_q(*(AVRational*)dst, q);
- case AV_OPT_TYPE_BINARY: {
- struct {
- uint8_t *data;
- int size;
- } tmp = {0};
- int opt_size = *(int *)((void **)dst + 1);
- void *opt_ptr = *(void **)dst;
- if (!opt_size && (!o->default_val.str || !strlen(o->default_val.str)))
- return 1;
- if (!opt_size || !o->default_val.str || !strlen(o->default_val.str ))
- return 0;
- if (opt_size != strlen(o->default_val.str) / 2)
- return 0;
- ret = set_string_binary(NULL, NULL, o->default_val.str, &tmp.data);
- if (!ret)
- ret = !memcmp(opt_ptr, tmp.data, tmp.size);
- av_free(tmp.data);
- return ret;
- }
- case AV_OPT_TYPE_DICT:
- /* Binary and dict have not default support yet. Any pointer is not default. */
- return !!(*(void **)dst);
- case AV_OPT_TYPE_IMAGE_SIZE:
- if (!o->default_val.str || !strcmp(o->default_val.str, "none"))
- w = h = 0;
- else if ((ret = av_parse_video_size(&w, &h, o->default_val.str)) < 0)
- return ret;
- return (w == *(int *)dst) && (h == *((int *)dst+1));
- case AV_OPT_TYPE_VIDEO_RATE:
- q = (AVRational){0, 0};
- if (o->default_val.str) {
- if ((ret = av_parse_video_rate(&q, o->default_val.str)) < 0)
- return ret;
- }
- return !av_cmp_q(*(AVRational*)dst, q);
- case AV_OPT_TYPE_COLOR: {
- uint8_t color[4] = {0, 0, 0, 0};
- if (o->default_val.str) {
- if ((ret = av_parse_color(color, o->default_val.str, -1, NULL)) < 0)
- return ret;
- }
- return !memcmp(color, dst, sizeof(color));
- }
- default:
- av_log(obj, AV_LOG_WARNING, "Not supported option type: %d, option name: %s\n", o->type, o->name);
- break;
- }
- return AVERROR_PATCHWELCOME;
- }
- int av_opt_is_set_to_default_by_name(void *obj, const char *name, int search_flags)
- {
- const AVOption *o;
- void *target;
- if (!obj)
- return AVERROR(EINVAL);
- o = av_opt_find2(obj, name, NULL, 0, search_flags, &target);
- if (!o)
- return AVERROR_OPTION_NOT_FOUND;
- return av_opt_is_set_to_default(target, o);
- }
- int av_opt_serialize(void *obj, int opt_flags, int flags, char **buffer,
- const char key_val_sep, const char pairs_sep)
- {
- const AVOption *o = NULL;
- uint8_t *buf;
- AVBPrint bprint;
- int ret, cnt = 0;
- const char special_chars[] = {pairs_sep, key_val_sep, '\0'};
- if (pairs_sep == '\0' || key_val_sep == '\0' || pairs_sep == key_val_sep ||
- pairs_sep == '\\' || key_val_sep == '\\') {
- av_log(obj, AV_LOG_ERROR, "Invalid separator(s) found.");
- return AVERROR(EINVAL);
- }
- if (!obj || !buffer)
- return AVERROR(EINVAL);
- *buffer = NULL;
- av_bprint_init(&bprint, 64, AV_BPRINT_SIZE_UNLIMITED);
- while (o = av_opt_next(obj, o)) {
- if (o->type == AV_OPT_TYPE_CONST)
- continue;
- if ((flags & AV_OPT_SERIALIZE_OPT_FLAGS_EXACT) && o->flags != opt_flags)
- continue;
- else if (((o->flags & opt_flags) != opt_flags))
- continue;
- if (flags & AV_OPT_SERIALIZE_SKIP_DEFAULTS && av_opt_is_set_to_default(obj, o) > 0)
- continue;
- if ((ret = av_opt_get(obj, o->name, 0, &buf)) < 0) {
- av_bprint_finalize(&bprint, NULL);
- return ret;
- }
- if (buf) {
- if (cnt++)
- av_bprint_append_data(&bprint, &pairs_sep, 1);
- av_bprint_escape(&bprint, o->name, special_chars, AV_ESCAPE_MODE_BACKSLASH, 0);
- av_bprint_append_data(&bprint, &key_val_sep, 1);
- av_bprint_escape(&bprint, buf, special_chars, AV_ESCAPE_MODE_BACKSLASH, 0);
- av_freep(&buf);
- }
- }
- av_bprint_finalize(&bprint, buffer);
- return 0;
- }
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