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f_lavfi: support setting common filter options like "threads"

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AVFilterContext instances support some additional AVOptions over the
actual filter. This includes useful options like "threads". We didn't
support setting those for the "direct" wrapper (--vf=yadif:threads=1
failed). Change this. It requires setting options on the AVFilterContext
directly, except the code for positional parameters still needs to
access the actual filter's AVOptions.
This commit is contained in:
wm4 2018-04-27 15:55:53 +02:00 committed by Jan Ekström
parent fff5fda74b
commit 2a28712b44
3 changed files with 12 additions and 3 deletions
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11
common/av_common.c
View File

@ -313,7 +313,7 @@ void mp_avdict_print_unset(struct mp_log *log, int msgl, AVDictionary *dict)
// to the name of the n-th parameter.
static void resolve_positional_arg(void *avobj, char **name)
{
if (!*name || (*name)[0] != '@')
if (!*name || (*name)[0] != '@' || !avobj)
return;
char *end = NULL;
@ -344,12 +344,19 @@ static void resolve_positional_arg(void *avobj, char **name)
// Options which fail to set (error or not found) are printed to log.
// Returns: >=0 success, <0 failed to set an option
int mp_set_avopts(struct mp_log *log, void *avobj, char **kv)
{
return mp_set_avopts_pos(log, avobj, avobj, kv);
}
// Like mp_set_avopts(), but the posargs argument is used to resolve positional
// arguments. If posargs==NULL, positional args are disabled.
int mp_set_avopts_pos(struct mp_log *log, void *avobj, void *posargs, char **kv)
{
int success = 0;
for (int n = 0; kv && kv[n * 2]; n++) {
char *k = kv[n * 2 + 0];
char *v = kv[n * 2 + 1];
resolve_positional_arg(avobj, &k);
resolve_positional_arg(posargs, &k);
int r = av_opt_set(avobj, k, v, AV_OPT_SEARCH_CHILDREN);
if (r == AVERROR_OPTION_NOT_FOUND) {
mp_err(log, "AVOption '%s' not found.\n", k);

1
common/av_common.h
View File

@ -47,5 +47,6 @@ const char *mp_codec_from_av_codec_id(int codec_id);
void mp_set_avdict(struct AVDictionary **dict, char **kv);
void mp_avdict_print_unset(struct mp_log *log, int msgl, struct AVDictionary *d);
int mp_set_avopts(struct mp_log *log, void *avobj, char **kv);
int mp_set_avopts_pos(struct mp_log *log, void *avobj, void *posargs, char **kv);
#endif

3
filters/f_lavfi.c
View File

@ -271,7 +271,8 @@ static void precreate_graph(struct lavfi *c, bool first_init)
goto error;
}
if (mp_set_avopts(c->log, filter->priv, c->direct_filter_opts) < 0)
if (mp_set_avopts_pos(c->log, filter, filter->priv,
c->direct_filter_opts) < 0)
goto error;
if (avfilter_init_str(filter, NULL) < 0) {