+
+/* Called from the main thread. */
+void pa_source_output_set_volume_direct(pa_source_output *o, const pa_cvolume *volume) {
+ pa_cvolume old_volume;
+ char old_volume_str[PA_CVOLUME_SNPRINT_VERBOSE_MAX];
+ char new_volume_str[PA_CVOLUME_SNPRINT_VERBOSE_MAX];
+
+ pa_assert(o);
+ pa_assert(volume);
+
+ old_volume = o->volume;
+
+ if (pa_cvolume_equal(volume, &old_volume))
+ return;
+
+ o->volume = *volume;
+ pa_log_debug("The volume of source output %u changed from %s to %s.", o->index,
+ pa_cvolume_snprint_verbose(old_volume_str, sizeof(old_volume_str), &old_volume, &o->channel_map, true),
+ pa_cvolume_snprint_verbose(new_volume_str, sizeof(new_volume_str), volume, &o->channel_map, true));
+
+ if (o->volume_changed)
+ o->volume_changed(o);
+
+ pa_subscription_post(o->core, PA_SUBSCRIPTION_EVENT_SOURCE_OUTPUT|PA_SUBSCRIPTION_EVENT_CHANGE, o->index);
+}