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AVOptions: add av_opt_find() as a replacement for av_find_opt.

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This commit is contained in:
Anton Khirnov 2011-05-22 13:25:19 +02:00
parent 7e83e1c511
commit dc59ec5e79
6 changed files with 70 additions and 9 deletions
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6
cmdutils.c
View File

@ -299,7 +299,7 @@ int opt_default(const char *opt, const char *arg){
int opt_types[]={AV_OPT_FLAG_VIDEO_PARAM, AV_OPT_FLAG_AUDIO_PARAM, 0, AV_OPT_FLAG_SUBTITLE_PARAM, 0};
for(type=0; *avcodec_opts && type<AVMEDIA_TYPE_NB && ret>= 0; type++){
const AVOption *o2 = av_find_opt(avcodec_opts[0], opt, NULL, opt_types[type], opt_types[type]);
const AVOption *o2 = av_opt_find(avcodec_opts[0], opt, NULL, opt_types[type], 0);
if(o2)
ret = av_set_string3(avcodec_opts[type], opt, arg, 1, &o);
}
@ -324,13 +324,13 @@ int opt_default(const char *opt, const char *arg){
AVOutputFormat *oformat = NULL;
while ((p=av_codec_next(p))){
const AVClass *c = p->priv_class;
if(c && av_find_opt(&c, opt, NULL, 0, 0))
if(c && av_opt_find(&c, opt, NULL, 0, 0))
break;
}
if (!p) {
while ((oformat = av_oformat_next(oformat))) {
const AVClass *c = oformat->priv_class;
if (c && av_find_opt(&c, opt, NULL, 0, 0))
if (c && av_opt_find(&c, opt, NULL, 0, 0))
break;
}
}

2
ffserver.c
View File

@ -3944,7 +3944,7 @@ static int ffserver_opt_default(const char *opt, const char *arg,
AVCodecContext *avctx, int type)
{
int ret = 0;
const AVOption *o = av_find_opt(avctx, opt, NULL, type, type);
const AVOption *o = av_opt_find(avctx, opt, NULL, type, 0);
if(o)
ret = av_set_string3(avctx, opt, arg, 1, NULL);
return ret;

3
libavutil/avutil.h
View File

@ -60,6 +60,9 @@
#ifndef FF_API_GET_BITS_PER_SAMPLE_FMT
#define FF_API_GET_BITS_PER_SAMPLE_FMT (LIBAVUTIL_VERSION_MAJOR < 52)
#endif
#ifndef FF_API_FIND_OPT
#define FF_API_FIND_OPT (LIBAVUTIL_VERSION_MAJOR < 52)
#endif
/**
* Return the LIBAVUTIL_VERSION_INT constant.

7
libavutil/log.h
View File

@ -70,6 +70,13 @@ typedef struct {
* can be NULL of course
*/
int parent_log_context_offset;
/**
* A function for extended searching, e.g. in possible
* children objects.
*/
const struct AVOption* (*opt_find)(void *obj, const char *name, const char *unit,
int opt_flags, int search_flags);
} AVClass;
/* av_log API */

30
libavutil/opt.c
View File

@ -31,6 +31,7 @@
#include "eval.h"
#include "dict.h"
#if FF_API_FIND_OPT
//FIXME order them and do a bin search
const AVOption *av_find_opt(void *v, const char *name, const char *unit, int mask, int flags)
{
@ -43,6 +44,7 @@ const AVOption *av_find_opt(void *v, const char *name, const char *unit, int mas
}
return NULL;
}
#endif
const AVOption *av_next_option(void *obj, const AVOption *last)
{
@ -53,7 +55,7 @@ const AVOption *av_next_option(void *obj, const AVOption *last)
static int av_set_number2(void *obj, const char *name, double num, int den, int64_t intnum, const AVOption **o_out)
{
const AVOption *o= av_find_opt(obj, name, NULL, 0, 0);
const AVOption *o = av_opt_find(obj, name, NULL, 0, 0);
void *dst;
if (o_out)
*o_out= o;
@ -116,7 +118,7 @@ static int hexchar2int(char c) {
int av_set_string3(void *obj, const char *name, const char *val, int alloc, const AVOption **o_out)
{
int ret;
const AVOption *o= av_find_opt(obj, name, NULL, 0, 0);
const AVOption *o = av_opt_find(obj, name, NULL, 0, 0);
if (o_out)
*o_out = o;
if (!o)
@ -163,7 +165,7 @@ int av_set_string3(void *obj, const char *name, const char *val, int alloc, cons
buf[i]=0;
{
const AVOption *o_named= av_find_opt(obj, buf, o->unit, 0, 0);
const AVOption *o_named = av_opt_find(obj, buf, o->unit, 0, 0);
if (o_named && o_named->type == FF_OPT_TYPE_CONST)
d= o_named->default_val.dbl;
else if (!strcmp(buf, "default")) d= o->default_val.dbl;
@ -228,7 +230,7 @@ const AVOption *av_set_int(void *obj, const char *name, int64_t n)
*/
const char *av_get_string(void *obj, const char *name, const AVOption **o_out, char *buf, int buf_len)
{
const AVOption *o= av_find_opt(obj, name, NULL, 0, 0);
const AVOption *o = av_opt_find(obj, name, NULL, 0, 0);
void *dst;
uint8_t *bin;
int len, i;
@ -261,7 +263,7 @@ const char *av_get_string(void *obj, const char *name, const AVOption **o_out, c
static int av_get_number(void *obj, const char *name, const AVOption **o_out, double *num, int *den, int64_t *intnum)
{
const AVOption *o= av_find_opt(obj, name, NULL, 0, 0);
const AVOption *o = av_opt_find(obj, name, NULL, 0, 0);
void *dst;
if (!o || o->offset<=0)
goto error;
@ -560,6 +562,24 @@ int av_opt_set_dict(void *obj, AVDictionary **options)
return ret;
}
const AVOption *av_opt_find(void *obj, const char *name, const char *unit,
int opt_flags, int search_flags)
{
AVClass *c = *(AVClass**)obj;
const AVOption *o = NULL;
if (c->opt_find && search_flags & AV_OPT_SEARCH_CHILDREN &&
(o = c->opt_find(obj, name, unit, opt_flags, search_flags)))
return o;
while (o = av_next_option(obj, o)) {
if (!strcmp(o->name, name) && (!unit || (o->unit && !strcmp(o->unit, unit))) &&
(o->flags & opt_flags) == opt_flags)
return o;
}
return NULL;
}
#ifdef TEST
#undef printf

31
libavutil/opt.h
View File

@ -92,6 +92,7 @@ typedef struct AVOption {
const char *unit;
} AVOption;
#if FF_API_FIND_OPT
/**
* Look for an option in obj. Look only for the options which
* have the flags set as specified in mask and flags (that is,
@ -103,8 +104,12 @@ typedef struct AVOption {
* @param[in] unit the unit of the option to look for, or any if NULL
* @return a pointer to the option found, or NULL if no option
* has been found
*
* @deprecated use av_opt_find.
*/
attribute_deprecated
const AVOption *av_find_opt(void *obj, const char *name, const char *unit, int mask, int flags);
#endif
/**
* Set the field of obj with the given name to value.
@ -208,4 +213,30 @@ int av_opt_flag_is_set(void *obj, const char *field_name, const char *flag_name)
*/
int av_opt_set_dict(void *obj, struct AVDictionary **options);
#define AV_OPT_SEARCH_CHILDREN 0x0001 /**< Search in possible children of the
given object first. */
/**
* Look for an option in an object. Consider only options which
* have all the specified flags set.
*
* @param[in] obj A pointer to a struct whose first element is a
* pointer to an AVClass.
* @param[in] name The name of the option to look for.
* @param[in] unit When searching for named constants, name of the unit
* it belongs to.
* @param opt_flags Find only options with all the specified flags set (AV_OPT_FLAG).
* @param search_flags A combination of AV_OPT_SEARCH_*.
*
* @return A pointer to the option found, or NULL if no option
* was found.
*
* @note Options found with AV_OPT_SEARCH_CHILDREN flag may not be settable
* directly with av_set_string3(). Use special calls which take an options
* AVDictionary (e.g. avformat_open_input()) to set options found with this
* flag.
*/
const AVOption *av_opt_find(void *obj, const char *name, const char *unit,
int opt_flags, int search_flags);
#endif /* AVUTIL_OPT_H */