void upnp_control_init(struct upnp_device *device) {
upnp_control_get_service();
// Set initial volume.
float volume_fraction = 0;
if (output_get_volume(&volume_fraction) == 0) {
Log_info("control", "Output inital volume is %f; setting "
"control variables accordingly.", volume_fraction);
change_volume_decibel(20 * log(volume_fraction) / log(10));
}
assert(control_service_.last_change == NULL);
control_service_.last_change =
UPnPLastChangeCollector_new(state_variables_, CONTROL_EVENT_XML_NS,
device,
CONTROL_SERVICE_ID);
// According to UPnP-av-RenderingControl-v3-Service-20101231.pdf, 2.3.1
// page 51, the A_ARG_TYPE* variables are not evented.
UPnPLastChangeCollector_add_ignore(control_service_.last_change,
CONTROL_VAR_AAT_CHANNEL);
UPnPLastChangeCollector_add_ignore(control_service_.last_change,
CONTROL_VAR_AAT_INSTANCE_ID);
UPnPLastChangeCollector_add_ignore(control_service_.last_change,
CONTROL_VAR_AAT_PRESET_NAME);
}
void upnp_control_init(void) {
upnp_control_get_service();
// This doesn't seem to work: asking gmstreamer initially will always
// return 1.0.
float volume_fraction = 0;
if (output_get_volume(&volume_fraction) == 0) {
fprintf(stderr, "Got fraction %f\n", volume_fraction);
change_volume_decibel(NULL, 20 * log(volume_fraction) / log(10));
}
}
static int set_volume_db(struct action_event *event) {
const char *str_decibel_in = upnp_get_string(event, "DesiredVolume");
service_lock();
float raw_decibel_in = atof(str_decibel_in);
float decibel = change_volume_decibel(event, raw_decibel_in);
output_set_volume(exp(decibel / 20 * log(10)));
service_unlock();
return 0;
}
