static void sink_set_volume_cb(pa_sink *s) {
struct userdata *u = s->userdata;
pa_cvolume hw;
pa_volume_t v;
char t[PA_CVOLUME_SNPRINT_VERBOSE_MAX];
pa_assert(u);
/* If we're muted we don't need to do anything */
if (s->muted)
return;
/* Calculate the max volume of all channels.
We'll use this as our (single) volume on the APEX device and emulate
any variation in channel volumes in software */
v = pa_cvolume_max(&s->real_volume);
/* Create a pa_cvolume version of our single value */
pa_cvolume_set(&hw, s->sample_spec.channels, v);
/* Perform any software manipulation of the volume needed */
pa_sw_cvolume_divide(&s->soft_volume, &s->real_volume, &hw);
pa_log_debug("Requested volume: %s", pa_cvolume_snprint_verbose(t, sizeof(t), &s->real_volume, &s->channel_map, false));
pa_log_debug("Got hardware volume: %s", pa_cvolume_snprint_verbose(t, sizeof(t), &hw, &s->channel_map, false));
pa_log_debug("Calculated software volume: %s",
pa_cvolume_snprint_verbose(t, sizeof(t), &s->soft_volume, &s->channel_map, true));
/* Any necessary software volume manipulation is done so set
our hw volume (or v as a single value) on the device */
pa_raop_client_set_volume(u->raop, v);
}
static pa_hook_result_t sink_input_fixate_hook_callback(pa_core *core, pa_sink_input_new_data *data, struct userdata *u) {
const char *hpos, *vpos, *role, *id;
double f;
char t[PA_CVOLUME_SNPRINT_VERBOSE_MAX];
pa_cvolume v;
pa_assert(data);
if (!(role = pa_proplist_gets(data->proplist, PA_PROP_MEDIA_ROLE)))
return PA_HOOK_OK;
if (!pa_streq(role, "event"))
return PA_HOOK_OK;
if ((id = pa_proplist_gets(data->proplist, PA_PROP_EVENT_ID))) {
/* The test sounds should never be positioned in space, since
* they might be triggered themselves to configure the speakers
* in space, which we don't want to mess up. */
if (pa_startswith(id, "audio-channel-"))
return PA_HOOK_OK;
if (pa_streq(id, "audio-volume-change"))
return PA_HOOK_OK;
if (pa_streq(id, "audio-test-signal"))
return PA_HOOK_OK;
}
if (!(hpos = pa_proplist_gets(data->proplist, PA_PROP_EVENT_MOUSE_HPOS)))
hpos = pa_proplist_gets(data->proplist, PA_PROP_WINDOW_HPOS);
if (!(vpos = pa_proplist_gets(data->proplist, PA_PROP_EVENT_MOUSE_VPOS)))
vpos = pa_proplist_gets(data->proplist, PA_PROP_WINDOW_VPOS);
if (!hpos && !vpos)
return PA_HOOK_OK;
pa_cvolume_reset(&v, data->sink->sample_spec.channels);
if (hpos) {
if (parse_pos(hpos, &f) < 0)
return PA_HOOK_OK;
if (pa_channel_map_can_balance(&data->sink->channel_map)) {
pa_log_debug("Positioning event sound '%s' horizontally at %0.2f.", pa_strnull(pa_proplist_gets(data->proplist, PA_PROP_EVENT_ID)), f);
pa_cvolume_set_balance(&v, &data->sink->channel_map, f*2.0-1.0);
}
}
if (vpos) {
if (parse_pos(vpos, &f) < 0)
return PA_HOOK_OK;
if (pa_channel_map_can_fade(&data->sink->channel_map)) {
pa_log_debug("Positioning event sound '%s' vertically at %0.2f.", pa_strnull(pa_proplist_gets(data->proplist, PA_PROP_EVENT_ID)), f);
pa_cvolume_set_fade(&v, &data->sink->channel_map, f*2.0-1.0);
}
}
pa_log_debug("Final volume factor %s.",
pa_cvolume_snprint_verbose(t,
sizeof(t),
&v,
&data->sink->channel_map,
data->sink->flags & PA_SINK_DECIBEL_VOLUME));
pa_sink_input_new_data_add_volume_factor_sink(data, u->name, &v);
return PA_HOOK_OK;
}
