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788 lines
25 KiB
788 lines
25 KiB
/* |
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* AVOptions |
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* Copyright (c) 2005 Michael Niedermayer <michaelni@gmx.at> |
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* |
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* This file is part of Libav. |
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* |
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* Libav is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* Libav is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with Libav; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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|
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/** |
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* @file |
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* AVOptions |
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* @author Michael Niedermayer <michaelni@gmx.at> |
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*/ |
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|
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#include "avutil.h" |
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#include "avstring.h" |
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#include "common.h" |
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#include "opt.h" |
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#include "eval.h" |
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#include "dict.h" |
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#include "log.h" |
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#include "mathematics.h" |
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|
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const AVOption *av_opt_next(void *obj, const AVOption *last) |
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{ |
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AVClass *class = *(AVClass**)obj; |
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if (!last && class->option && class->option[0].name) |
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return class->option; |
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if (last && last[1].name) |
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return ++last; |
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return NULL; |
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} |
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|
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static int read_number(const AVOption *o, void *dst, double *num, int *den, int64_t *intnum) |
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{ |
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switch (o->type) { |
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case AV_OPT_TYPE_FLAGS: *intnum = *(unsigned int*)dst;return 0; |
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case AV_OPT_TYPE_INT: *intnum = *(int *)dst;return 0; |
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case AV_OPT_TYPE_INT64: *intnum = *(int64_t *)dst;return 0; |
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case AV_OPT_TYPE_FLOAT: *num = *(float *)dst;return 0; |
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case AV_OPT_TYPE_DOUBLE: *num = *(double *)dst;return 0; |
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case AV_OPT_TYPE_RATIONAL: *intnum = ((AVRational*)dst)->num; |
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*den = ((AVRational*)dst)->den; |
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return 0; |
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} |
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return AVERROR(EINVAL); |
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} |
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|
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static int write_number(void *obj, const AVOption *o, void *dst, double num, int den, int64_t intnum) |
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{ |
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if (o->max*den < num*intnum || o->min*den > num*intnum) { |
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av_log(obj, AV_LOG_ERROR, "Value %f for parameter '%s' out of range\n", |
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num*intnum/den, o->name); |
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return AVERROR(ERANGE); |
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} |
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|
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switch (o->type) { |
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case AV_OPT_TYPE_FLAGS: |
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case AV_OPT_TYPE_INT: *(int *)dst= llrint(num/den)*intnum; break; |
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case AV_OPT_TYPE_INT64: *(int64_t *)dst= llrint(num/den)*intnum; break; |
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case AV_OPT_TYPE_FLOAT: *(float *)dst= num*intnum/den; break; |
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case AV_OPT_TYPE_DOUBLE:*(double *)dst= num*intnum/den; break; |
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case AV_OPT_TYPE_RATIONAL: |
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if ((int)num == num) *(AVRational*)dst= (AVRational){num*intnum, den}; |
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else *(AVRational*)dst= av_d2q(num*intnum/den, 1<<24); |
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break; |
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default: |
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return AVERROR(EINVAL); |
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} |
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return 0; |
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} |
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|
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static const double const_values[] = { |
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M_PI, |
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M_E, |
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FF_QP2LAMBDA, |
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0 |
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}; |
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|
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static const char * const const_names[] = { |
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"PI", |
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"E", |
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"QP2LAMBDA", |
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0 |
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}; |
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|
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static int hexchar2int(char c) { |
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if (c >= '0' && c <= '9') return c - '0'; |
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if (c >= 'a' && c <= 'f') return c - 'a' + 10; |
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if (c >= 'A' && c <= 'F') return c - 'A' + 10; |
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return -1; |
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} |
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|
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static int set_string_binary(void *obj, const AVOption *o, const char *val, uint8_t **dst) |
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{ |
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int *lendst = (int *)(dst + 1); |
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uint8_t *bin, *ptr; |
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int len = strlen(val); |
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|
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av_freep(dst); |
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*lendst = 0; |
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|
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if (len & 1) |
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return AVERROR(EINVAL); |
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len /= 2; |
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|
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ptr = bin = av_malloc(len); |
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while (*val) { |
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int a = hexchar2int(*val++); |
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int b = hexchar2int(*val++); |
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if (a < 0 || b < 0) { |
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av_free(bin); |
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return AVERROR(EINVAL); |
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} |
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*ptr++ = (a << 4) | b; |
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} |
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*dst = bin; |
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*lendst = len; |
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|
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return 0; |
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} |
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|
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static int set_string(void *obj, const AVOption *o, const char *val, uint8_t **dst) |
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{ |
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av_freep(dst); |
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*dst = av_strdup(val); |
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return 0; |
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} |
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|
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#define DEFAULT_NUMVAL(opt) ((opt->type == AV_OPT_TYPE_INT64 || \ |
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opt->type == AV_OPT_TYPE_CONST || \ |
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opt->type == AV_OPT_TYPE_FLAGS || \ |
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opt->type == AV_OPT_TYPE_INT) ? \ |
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opt->default_val.i64 : opt->default_val.dbl) |
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|
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static int set_string_number(void *obj, void *target_obj, const AVOption *o, const char *val, void *dst) |
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{ |
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int ret = 0, notfirst = 0; |
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for (;;) { |
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int i, den = 1; |
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char buf[256]; |
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int cmd = 0; |
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double d, num = 1; |
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int64_t intnum = 1; |
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|
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i = 0; |
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if (*val == '+' || *val == '-') { |
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if (o->type == AV_OPT_TYPE_FLAGS) |
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cmd = *(val++); |
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else if (!notfirst) |
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buf[i++] = *val; |
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} |
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|
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for (; i < sizeof(buf) - 1 && val[i] && val[i] != '+' && val[i] != '-'; i++) |
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buf[i] = val[i]; |
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buf[i] = 0; |
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|
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{ |
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const AVOption *o_named = av_opt_find(target_obj, buf, o->unit, 0, 0); |
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if (o_named && o_named->type == AV_OPT_TYPE_CONST) |
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d = DEFAULT_NUMVAL(o_named); |
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else if (!strcmp(buf, "default")) d = DEFAULT_NUMVAL(o); |
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else if (!strcmp(buf, "max" )) d = o->max; |
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else if (!strcmp(buf, "min" )) d = o->min; |
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else if (!strcmp(buf, "none" )) d = 0; |
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else if (!strcmp(buf, "all" )) d = ~0; |
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else { |
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int res = av_expr_parse_and_eval(&d, buf, const_names, const_values, NULL, NULL, NULL, NULL, NULL, 0, obj); |
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if (res < 0) { |
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av_log(obj, AV_LOG_ERROR, "Unable to parse option value \"%s\"\n", val); |
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return res; |
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} |
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} |
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} |
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if (o->type == AV_OPT_TYPE_FLAGS) { |
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read_number(o, dst, NULL, NULL, &intnum); |
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if (cmd == '+') d = intnum | (int64_t)d; |
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else if (cmd == '-') d = intnum &~(int64_t)d; |
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} else { |
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read_number(o, dst, &num, &den, &intnum); |
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if (cmd == '+') d = notfirst*num*intnum/den + d; |
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else if (cmd == '-') d = notfirst*num*intnum/den - d; |
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} |
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|
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if ((ret = write_number(obj, o, dst, d, 1, 1)) < 0) |
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return ret; |
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val += i; |
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if (!*val) |
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return 0; |
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notfirst = 1; |
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} |
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|
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return 0; |
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} |
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|
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int av_opt_set(void *obj, const char *name, const char *val, int search_flags) |
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{ |
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void *dst, *target_obj; |
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const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj); |
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if (!o || !target_obj) |
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return AVERROR_OPTION_NOT_FOUND; |
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if (!val) |
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return AVERROR(EINVAL); |
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|
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dst = ((uint8_t*)target_obj) + o->offset; |
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switch (o->type) { |
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case AV_OPT_TYPE_STRING: return set_string(obj, o, val, dst); |
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case AV_OPT_TYPE_BINARY: return set_string_binary(obj, o, val, dst); |
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case AV_OPT_TYPE_FLAGS: |
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case AV_OPT_TYPE_INT: |
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case AV_OPT_TYPE_INT64: |
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case AV_OPT_TYPE_FLOAT: |
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case AV_OPT_TYPE_DOUBLE: |
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case AV_OPT_TYPE_RATIONAL: return set_string_number(obj, target_obj, o, val, dst); |
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} |
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|
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av_log(obj, AV_LOG_ERROR, "Invalid option type.\n"); |
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return AVERROR(EINVAL); |
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} |
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|
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#define OPT_EVAL_NUMBER(name, opttype, vartype)\ |
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int av_opt_eval_ ## name(void *obj, const AVOption *o, const char *val, vartype *name ## _out)\ |
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{\ |
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if (!o || o->type != opttype)\ |
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return AVERROR(EINVAL);\ |
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return set_string_number(obj, obj, o, val, name ## _out);\ |
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} |
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|
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OPT_EVAL_NUMBER(flags, AV_OPT_TYPE_FLAGS, int) |
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OPT_EVAL_NUMBER(int, AV_OPT_TYPE_INT, int) |
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OPT_EVAL_NUMBER(int64, AV_OPT_TYPE_INT64, int64_t) |
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OPT_EVAL_NUMBER(float, AV_OPT_TYPE_FLOAT, float) |
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OPT_EVAL_NUMBER(double, AV_OPT_TYPE_DOUBLE, double) |
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OPT_EVAL_NUMBER(q, AV_OPT_TYPE_RATIONAL, AVRational) |
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|
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static int set_number(void *obj, const char *name, double num, int den, int64_t intnum, |
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int search_flags) |
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{ |
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void *dst, *target_obj; |
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const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj); |
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|
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if (!o || !target_obj) |
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return AVERROR_OPTION_NOT_FOUND; |
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|
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dst = ((uint8_t*)target_obj) + o->offset; |
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return write_number(obj, o, dst, num, den, intnum); |
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} |
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|
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int av_opt_set_int(void *obj, const char *name, int64_t val, int search_flags) |
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{ |
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return set_number(obj, name, 1, 1, val, search_flags); |
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} |
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|
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int av_opt_set_double(void *obj, const char *name, double val, int search_flags) |
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{ |
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return set_number(obj, name, val, 1, 1, search_flags); |
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} |
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|
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int av_opt_set_q(void *obj, const char *name, AVRational val, int search_flags) |
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{ |
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return set_number(obj, name, val.num, val.den, 1, search_flags); |
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} |
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|
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int av_opt_set_bin(void *obj, const char *name, const uint8_t *val, int len, int search_flags) |
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{ |
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void *target_obj; |
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const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj); |
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uint8_t *ptr; |
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uint8_t **dst; |
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int *lendst; |
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|
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if (!o || !target_obj) |
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return AVERROR_OPTION_NOT_FOUND; |
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|
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if (o->type != AV_OPT_TYPE_BINARY) |
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return AVERROR(EINVAL); |
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|
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ptr = av_malloc(len); |
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if (!ptr) |
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return AVERROR(ENOMEM); |
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|
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dst = (uint8_t **)(((uint8_t *)target_obj) + o->offset); |
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lendst = (int *)(dst + 1); |
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|
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av_free(*dst); |
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*dst = ptr; |
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*lendst = len; |
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memcpy(ptr, val, len); |
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|
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return 0; |
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} |
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|
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int av_opt_get(void *obj, const char *name, int search_flags, uint8_t **out_val) |
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{ |
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void *dst, *target_obj; |
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const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj); |
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uint8_t *bin, buf[128]; |
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int len, i, ret; |
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|
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if (!o || !target_obj) |
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return AVERROR_OPTION_NOT_FOUND; |
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|
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dst = (uint8_t*)target_obj + o->offset; |
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|
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buf[0] = 0; |
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switch (o->type) { |
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case AV_OPT_TYPE_FLAGS: ret = snprintf(buf, sizeof(buf), "0x%08X", *(int *)dst);break; |
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case AV_OPT_TYPE_INT: ret = snprintf(buf, sizeof(buf), "%d" , *(int *)dst);break; |
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case AV_OPT_TYPE_INT64: ret = snprintf(buf, sizeof(buf), "%"PRId64, *(int64_t*)dst);break; |
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case AV_OPT_TYPE_FLOAT: ret = snprintf(buf, sizeof(buf), "%f" , *(float *)dst);break; |
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case AV_OPT_TYPE_DOUBLE: ret = snprintf(buf, sizeof(buf), "%f" , *(double *)dst);break; |
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case AV_OPT_TYPE_RATIONAL: ret = snprintf(buf, sizeof(buf), "%d/%d", ((AVRational*)dst)->num, ((AVRational*)dst)->den);break; |
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case AV_OPT_TYPE_STRING: |
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if (*(uint8_t**)dst) |
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*out_val = av_strdup(*(uint8_t**)dst); |
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else |
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*out_val = av_strdup(""); |
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return 0; |
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case AV_OPT_TYPE_BINARY: |
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len = *(int*)(((uint8_t *)dst) + sizeof(uint8_t *)); |
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if ((uint64_t)len*2 + 1 > INT_MAX) |
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return AVERROR(EINVAL); |
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if (!(*out_val = av_malloc(len*2 + 1))) |
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return AVERROR(ENOMEM); |
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bin = *(uint8_t**)dst; |
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for (i = 0; i < len; i++) |
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snprintf(*out_val + i*2, 3, "%02X", bin[i]); |
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return 0; |
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default: |
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return AVERROR(EINVAL); |
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} |
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|
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if (ret >= sizeof(buf)) |
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return AVERROR(EINVAL); |
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*out_val = av_strdup(buf); |
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return 0; |
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} |
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|
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static int get_number(void *obj, const char *name, double *num, int *den, int64_t *intnum, |
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int search_flags) |
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{ |
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void *dst, *target_obj; |
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const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj); |
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if (!o || !target_obj) |
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goto error; |
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|
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dst = ((uint8_t*)target_obj) + o->offset; |
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|
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return read_number(o, dst, num, den, intnum); |
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|
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error: |
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*den=*intnum=0; |
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return -1; |
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} |
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|
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int av_opt_get_int(void *obj, const char *name, int search_flags, int64_t *out_val) |
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{ |
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int64_t intnum = 1; |
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double num = 1; |
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int ret, den = 1; |
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|
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if ((ret = get_number(obj, name, &num, &den, &intnum, search_flags)) < 0) |
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return ret; |
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*out_val = num*intnum/den; |
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return 0; |
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} |
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|
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int av_opt_get_double(void *obj, const char *name, int search_flags, double *out_val) |
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{ |
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int64_t intnum = 1; |
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double num = 1; |
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int ret, den = 1; |
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|
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if ((ret = get_number(obj, name, &num, &den, &intnum, search_flags)) < 0) |
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return ret; |
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*out_val = num*intnum/den; |
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return 0; |
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} |
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|
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int av_opt_get_q(void *obj, const char *name, int search_flags, AVRational *out_val) |
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{ |
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int64_t intnum = 1; |
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double num = 1; |
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int ret, den = 1; |
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|
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if ((ret = get_number(obj, name, &num, &den, &intnum, search_flags)) < 0) |
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return ret; |
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|
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if (num == 1.0 && (int)intnum == intnum) |
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*out_val = (AVRational){intnum, den}; |
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else |
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*out_val = av_d2q(num*intnum/den, 1<<24); |
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return 0; |
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} |
|
|
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int av_opt_flag_is_set(void *obj, const char *field_name, const char *flag_name) |
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{ |
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const AVOption *field = av_opt_find(obj, field_name, NULL, 0, 0); |
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const AVOption *flag = av_opt_find(obj, flag_name, |
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field ? field->unit : NULL, 0, 0); |
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int64_t res; |
|
|
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if (!field || !flag || flag->type != AV_OPT_TYPE_CONST || |
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av_opt_get_int(obj, field_name, 0, &res) < 0) |
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return 0; |
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return res & flag->default_val.i64; |
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} |
|
|
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static void opt_list(void *obj, void *av_log_obj, const char *unit, |
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int req_flags, int rej_flags) |
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{ |
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const AVOption *opt=NULL; |
|
|
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while ((opt = av_opt_next(obj, opt))) { |
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if (!(opt->flags & req_flags) || (opt->flags & rej_flags)) |
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continue; |
|
|
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/* Don't print CONST's on level one. |
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* Don't print anything but CONST's on level two. |
|
* Only print items from the requested unit. |
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*/ |
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if (!unit && opt->type==AV_OPT_TYPE_CONST) |
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continue; |
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else if (unit && opt->type!=AV_OPT_TYPE_CONST) |
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continue; |
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else if (unit && opt->type==AV_OPT_TYPE_CONST && strcmp(unit, opt->unit)) |
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continue; |
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else if (unit && opt->type == AV_OPT_TYPE_CONST) |
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av_log(av_log_obj, AV_LOG_INFO, " %-15s ", opt->name); |
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else |
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av_log(av_log_obj, AV_LOG_INFO, "-%-17s ", opt->name); |
|
|
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switch (opt->type) { |
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case AV_OPT_TYPE_FLAGS: |
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av_log(av_log_obj, AV_LOG_INFO, "%-7s ", "<flags>"); |
|
break; |
|
case AV_OPT_TYPE_INT: |
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av_log(av_log_obj, AV_LOG_INFO, "%-7s ", "<int>"); |
|
break; |
|
case AV_OPT_TYPE_INT64: |
|
av_log(av_log_obj, AV_LOG_INFO, "%-7s ", "<int64>"); |
|
break; |
|
case AV_OPT_TYPE_DOUBLE: |
|
av_log(av_log_obj, AV_LOG_INFO, "%-7s ", "<double>"); |
|
break; |
|
case AV_OPT_TYPE_FLOAT: |
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av_log(av_log_obj, AV_LOG_INFO, "%-7s ", "<float>"); |
|
break; |
|
case AV_OPT_TYPE_STRING: |
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av_log(av_log_obj, AV_LOG_INFO, "%-7s ", "<string>"); |
|
break; |
|
case AV_OPT_TYPE_RATIONAL: |
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av_log(av_log_obj, AV_LOG_INFO, "%-7s ", "<rational>"); |
|
break; |
|
case AV_OPT_TYPE_BINARY: |
|
av_log(av_log_obj, AV_LOG_INFO, "%-7s ", "<binary>"); |
|
break; |
|
case AV_OPT_TYPE_CONST: |
|
default: |
|
av_log(av_log_obj, AV_LOG_INFO, "%-7s ", ""); |
|
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' : '.'); |
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av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_VIDEO_PARAM ) ? 'V' : '.'); |
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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' : '.'); |
|
|
|
if (opt->help) |
|
av_log(av_log_obj, AV_LOG_INFO, " %s", opt->help); |
|
av_log(av_log_obj, AV_LOG_INFO, "\n"); |
|
if (opt->unit && opt->type != AV_OPT_TYPE_CONST) { |
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opt_list(obj, av_log_obj, opt->unit, req_flags, rej_flags); |
|
} |
|
} |
|
} |
|
|
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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); |
|
|
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opt_list(obj, av_log_obj, NULL, req_flags, rej_flags); |
|
|
|
return 0; |
|
} |
|
|
|
void av_opt_set_defaults(void *s) |
|
{ |
|
const AVOption *opt = NULL; |
|
while ((opt = av_opt_next(s, opt)) != NULL) { |
|
switch (opt->type) { |
|
case AV_OPT_TYPE_CONST: |
|
/* Nothing to be done here */ |
|
break; |
|
case AV_OPT_TYPE_FLAGS: |
|
case AV_OPT_TYPE_INT: |
|
case AV_OPT_TYPE_INT64: |
|
av_opt_set_int(s, opt->name, opt->default_val.i64, 0); |
|
break; |
|
case AV_OPT_TYPE_DOUBLE: |
|
case AV_OPT_TYPE_FLOAT: { |
|
double val; |
|
val = opt->default_val.dbl; |
|
av_opt_set_double(s, opt->name, val, 0); |
|
} |
|
break; |
|
case AV_OPT_TYPE_RATIONAL: { |
|
AVRational val; |
|
val = av_d2q(opt->default_val.dbl, INT_MAX); |
|
av_opt_set_q(s, opt->name, val, 0); |
|
} |
|
break; |
|
case AV_OPT_TYPE_STRING: |
|
av_opt_set(s, opt->name, opt->default_val.str, 0); |
|
break; |
|
case AV_OPT_TYPE_BINARY: |
|
/* Cannot set default for binary */ |
|
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 value '%s' for key '%s'\n", val, key); |
|
|
|
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; |
|
} |
|
|
|
void av_opt_free(void *obj) |
|
{ |
|
const AVOption *o = NULL; |
|
while ((o = av_opt_next(obj, o))) |
|
if (o->type == AV_OPT_TYPE_STRING || o->type == AV_OPT_TYPE_BINARY) |
|
av_freep((uint8_t *)obj + o->offset); |
|
} |
|
|
|
int av_opt_set_dict(void *obj, AVDictionary **options) |
|
{ |
|
AVDictionaryEntry *t = NULL; |
|
AVDictionary *tmp = NULL; |
|
int ret = 0; |
|
|
|
while ((t = av_dict_get(*options, "", t, AV_DICT_IGNORE_SUFFIX))) { |
|
ret = av_opt_set(obj, t->key, t->value, 0); |
|
if (ret == AVERROR_OPTION_NOT_FOUND) |
|
av_dict_set(&tmp, t->key, t->value, 0); |
|
else if (ret < 0) { |
|
av_log(obj, AV_LOG_ERROR, "Error setting option %s to value %s.\n", t->key, t->value); |
|
break; |
|
} |
|
ret = 0; |
|
} |
|
av_dict_free(options); |
|
*options = tmp; |
|
return ret; |
|
} |
|
|
|
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 = *(AVClass**)obj; |
|
const AVOption *o = NULL; |
|
|
|
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->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; |
|
} |
|
|
|
#ifdef TEST |
|
|
|
typedef struct TestContext |
|
{ |
|
const AVClass *class; |
|
int num; |
|
int toggle; |
|
char *string; |
|
int flags; |
|
AVRational rational; |
|
} TestContext; |
|
|
|
#define OFFSET(x) offsetof(TestContext, x) |
|
|
|
#define TEST_FLAG_COOL 01 |
|
#define TEST_FLAG_LAME 02 |
|
#define TEST_FLAG_MU 04 |
|
|
|
static const AVOption test_options[]= { |
|
{"num", "set num", OFFSET(num), AV_OPT_TYPE_INT, {.i64 = 0}, 0, 100 }, |
|
{"toggle", "set toggle", OFFSET(toggle), AV_OPT_TYPE_INT, {.i64 = 0}, 0, 1 }, |
|
{"rational", "set rational", OFFSET(rational), AV_OPT_TYPE_RATIONAL, {.dbl = 0}, 0, 10 }, |
|
{"string", "set string", OFFSET(string), AV_OPT_TYPE_STRING, {0}, CHAR_MIN, CHAR_MAX }, |
|
{"flags", "set flags", OFFSET(flags), AV_OPT_TYPE_FLAGS, {.i64 = 0}, 0, INT_MAX, 0, "flags" }, |
|
{"cool", "set cool flag ", 0, AV_OPT_TYPE_CONST, {.i64 = TEST_FLAG_COOL}, INT_MIN, INT_MAX, 0, "flags" }, |
|
{"lame", "set lame flag ", 0, AV_OPT_TYPE_CONST, {.i64 = TEST_FLAG_LAME}, INT_MIN, INT_MAX, 0, "flags" }, |
|
{"mu", "set mu flag ", 0, AV_OPT_TYPE_CONST, {.i64 = TEST_FLAG_MU}, INT_MIN, INT_MAX, 0, "flags" }, |
|
{NULL}, |
|
}; |
|
|
|
static const char *test_get_name(void *ctx) |
|
{ |
|
return "test"; |
|
} |
|
|
|
static const AVClass test_class = { |
|
"TestContext", |
|
test_get_name, |
|
test_options |
|
}; |
|
|
|
int main(void) |
|
{ |
|
int i; |
|
|
|
printf("\nTesting av_set_options_string()\n"); |
|
{ |
|
TestContext test_ctx; |
|
const char *options[] = { |
|
"", |
|
":", |
|
"=", |
|
"foo=:", |
|
":=foo", |
|
"=foo", |
|
"foo=", |
|
"foo", |
|
"foo=val", |
|
"foo==val", |
|
"toggle=:", |
|
"string=:", |
|
"toggle=1 : foo", |
|
"toggle=100", |
|
"toggle==1", |
|
"flags=+mu-lame : num=42: toggle=0", |
|
"num=42 : string=blahblah", |
|
"rational=0 : rational=1/2 : rational=1/-1", |
|
"rational=-1/0", |
|
}; |
|
|
|
test_ctx.class = &test_class; |
|
av_opt_set_defaults(&test_ctx); |
|
test_ctx.string = av_strdup("default"); |
|
|
|
av_log_set_level(AV_LOG_DEBUG); |
|
|
|
for (i=0; i < FF_ARRAY_ELEMS(options); i++) { |
|
av_log(&test_ctx, AV_LOG_DEBUG, "Setting options string '%s'\n", options[i]); |
|
if (av_set_options_string(&test_ctx, options[i], "=", ":") < 0) |
|
av_log(&test_ctx, AV_LOG_ERROR, "Error setting options string: '%s'\n", options[i]); |
|
printf("\n"); |
|
} |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
#endif
|
|
|