+/* Called from main context */
+pa_cvolume *pa_sink_input_get_relative_volume(pa_sink_input *i, pa_cvolume *v) {
+ unsigned c;
+
+ pa_sink_input_assert_ref(i);
+ pa_assert(v);
+ pa_assert(PA_SINK_INPUT_IS_LINKED(i->state));
+
+ /* This always returns a relative volume, even in flat volume mode */
+
+ v->channels = i->sample_spec.channels;
+
+ for (c = 0; c < v->channels; c++)
+ v->values[c] = pa_sw_volume_from_linear(i->relative_volume[c]);
+
+ return v;
+}
+
+/* Called from main context */
+void pa_sink_input_set_relative_volume(pa_sink_input *i, const pa_cvolume *v) {
+ unsigned c;
+ pa_cvolume _v;
+
+ pa_sink_input_assert_ref(i);
+ pa_assert(PA_SINK_INPUT_IS_LINKED(i->state));
+ pa_assert(!v || pa_cvolume_compatible(v, &i->sample_spec));
+
+ if (!v)
+ v = pa_cvolume_reset(&_v, i->sample_spec.channels);
+
+ /* This basically calculates:
+ *
+ * i->relative_volume := v
+ * i->soft_volume := i->relative_volume * i->volume_factor */
+
+ i->soft_volume.channels = i->sample_spec.channels;
+
+ for (c = 0; c < i->sample_spec.channels; c++) {
+ i->relative_volume[c] = pa_sw_volume_to_linear(v->values[c]);
+
+ i->soft_volume.values[c] = pa_sw_volume_from_linear(
+ i->relative_volume[c] *
+ pa_sw_volume_to_linear(i->volume_factor.values[c]));
+ }
+
+ /* We don't copy the data to the thread_info data. That's left for someone else to do */
+}
+