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source-output: add a new API pa_source_output_set_preferred_source

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If the source here is NULL, that means users want to clear the
preferred_source and move the source-output to the default_source,
otherwise set the preferred_source to the source->name and move the
source-output to the source. After that fire the source_output_change
event.

After adding this API, we can use this API to simplify the entry_apply
in the module-stream-restore.c.

Signed-off-by: Hui Wang <hui.wang@canonical.com>
This commit is contained in:
Hui Wang 2019-12-07 10:13:28 +08:00 • committed by Tanu Kaskinen
parent 5eec504d68
commit e529db75ec
3 changed files with 18 additions and 8 deletions
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14
src/pulsecore/source-output.c
View file

@ -1886,3 +1886,17 @@ void pa_source_output_set_reference_ratio(pa_source_output *o, const pa_cvolume
pa_cvolume_snprint_verbose(old_ratio_str, sizeof(old_ratio_str), &old_ratio, &o->channel_map, true),
pa_cvolume_snprint_verbose(new_ratio_str, sizeof(new_ratio_str), ratio, &o->channel_map, true));
}
/* Called from the main thread. */
void pa_source_output_set_preferred_source(pa_source_output *o, pa_source *s) {
pa_assert(o);
pa_xfree(o->preferred_source);
if (s) {
o->preferred_source = pa_xstrdup(s->name);
pa_source_output_move_to(o, s, false);
} else {
o->preferred_source = NULL;
pa_source_output_move_to(o, o->core->default_source, false);
}
}