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lavfi/avfilter: export process_options()

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Also, replace an AVFilterContext argument with a logging context+private
class, as those are the only things needed in this function.

Will be useful in future commits.
This commit is contained in:
Anton Khirnov 2023-01-16 15:54:54 +01:00
parent 926059dbf3
commit 80cf509e73
2 changed files with 23 additions and 10 deletions
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20
libavfilter/avfilter.c
View File

@ -776,8 +776,8 @@ int ff_filter_get_nb_threads(AVFilterContext *ctx)
return ctx->graph->nb_threads;
}
static int process_options(AVFilterContext *ctx, AVDictionary **options,
const char *args)
int ff_filter_opt_parse(void *logctx, const AVClass *priv_class,
AVDictionary **options, const char *args)
{
const AVOption *o = NULL;
int ret;
@ -791,8 +791,8 @@ static int process_options(AVFilterContext *ctx, AVDictionary **options,
while (*args) {
const char *shorthand = NULL;
if (ctx->filter->priv_class)
o = av_opt_next(ctx->priv, o);
if (priv_class)
o = av_opt_next(&priv_class, o);
if (o) {
if (o->type == AV_OPT_TYPE_CONST || o->offset == offset)
continue;
@ -805,9 +805,9 @@ static int process_options(AVFilterContext *ctx, AVDictionary **options,
&parsed_key, &value);
if (ret < 0) {
if (ret == AVERROR(EINVAL))
av_log(ctx, AV_LOG_ERROR, "No option name near '%s'\n", args);
av_log(logctx, AV_LOG_ERROR, "No option name near '%s'\n", args);
else
av_log(ctx, AV_LOG_ERROR, "Unable to parse '%s': %s\n", args,
av_log(logctx, AV_LOG_ERROR, "Unable to parse '%s': %s\n", args,
av_err2str(ret));
return ret;
}
@ -817,13 +817,13 @@ static int process_options(AVFilterContext *ctx, AVDictionary **options,
key = parsed_key;
/* discard all remaining shorthand */
if (ctx->filter->priv_class)
while ((o = av_opt_next(ctx->priv, o)));
if (priv_class)
while ((o = av_opt_next(&priv_class, o)));
} else {
key = shorthand;
}
av_log(ctx, AV_LOG_DEBUG, "Setting '%s' to value '%s'\n", key, value);
av_log(logctx, AV_LOG_DEBUG, "Setting '%s' to value '%s'\n", key, value);
av_dict_set(options, key, value, AV_DICT_MULTIKEY);
@ -887,7 +887,7 @@ int avfilter_init_str(AVFilterContext *filter, const char *args)
int ret = 0;
if (args && *args) {
ret = process_options(filter, &options, args);
ret = ff_filter_opt_parse(filter, filter->filter->priv_class, &options, args);
if (ret < 0)
goto fail;
}

13
libavfilter/internal.h
View File

@ -405,4 +405,17 @@ int ff_filter_process_command(AVFilterContext *ctx, const char *cmd,
int ff_filter_init_hw_frames(AVFilterContext *avctx, AVFilterLink *link,
int default_pool_size);
/**
* Parse filter options into a dictionary.
*
* @param logctx context for logging
* @param priv_class a filter's private class for shorthand options or NULL
* @param options dictionary to store parsed options in
* @param args options string to parse
*
* @return a non-negative number on success, a negative error code on failure
*/
int ff_filter_opt_parse(void *logctx, const AVClass *priv_class,
AVDictionary **options, const char *args);
#endif /* AVFILTER_INTERNAL_H */