libobs: Remove unused volmeter code

This code is unused as the volmeter interval is set on the
UI side.

libobs/obs-audio-controls.c

@@ -73,7 +73,6 @@ struct obs_volmeter {
 	DARRAY(struct meter_cb) callbacks;
 
 	enum obs_peak_meter_type peak_meter_type;
-	unsigned int update_ms;
 	float prev_samples[MAX_AUDIO_CHANNELS][4];
 
 	float magnitude[MAX_AUDIO_CHANNELS];
@@ -783,8 +782,6 @@ obs_volmeter_t *obs_volmeter_create(enum obs_fader_type type)
 
 	volmeter->type = type;
 
-	obs_volmeter_set_update_interval(volmeter, 50);
-
 	return volmeter;
 fail:
 	obs_volmeter_destroy(volmeter);
@@ -866,29 +863,6 @@ void obs_volmeter_set_peak_meter_type(obs_volmeter_t *volmeter,
 	pthread_mutex_unlock(&volmeter->mutex);
 }
 
-void obs_volmeter_set_update_interval(obs_volmeter_t *volmeter,
-				      const unsigned int ms)
-{
-	if (!volmeter || !ms)
-		return;
-
-	pthread_mutex_lock(&volmeter->mutex);
-	volmeter->update_ms = ms;
-	pthread_mutex_unlock(&volmeter->mutex);
-}
-
-unsigned int obs_volmeter_get_update_interval(obs_volmeter_t *volmeter)
-{
-	if (!volmeter)
-		return 0;
-
-	pthread_mutex_lock(&volmeter->mutex);
-	const unsigned int interval = volmeter->update_ms;
-	pthread_mutex_unlock(&volmeter->mutex);
-
-	return interval;
-}
-
 int obs_volmeter_get_nr_channels(obs_volmeter_t *volmeter)
 {
 	int source_nr_audio_channels;

libobs/obs-audio-controls.h

@@ -231,34 +231,6 @@ EXPORT void
 obs_volmeter_set_peak_meter_type(obs_volmeter_t *volmeter,
 				 enum obs_peak_meter_type peak_meter_type);
 
-/**
- * @brief Set the update interval for the volume meter
- * @param volmeter pointer to the volume meter object
- * @param ms update interval in ms
- *
- * This sets the update interval in milliseconds that should be processed before
- * the resulting values are emitted by the levels_updated signal. The resulting
- * number of audio samples is rounded to an integer.
- *
- * Please note that due to way obs does receive audio data from the sources
- * this is no hard guarantee for the timing of the signal itself. When the
- * volume meter receives a chunk of data that is multiple the size of the sample
- * interval, all data will be sampled and the values updated accordingly, but
- * only the signal for the last segment is actually emitted.
- * On the other hand data might be received in a way that will cause the signal
- * to be emitted in shorter intervals than specified here under some
- * circumstances.
- */
-EXPORT void obs_volmeter_set_update_interval(obs_volmeter_t *volmeter,
-					     const unsigned int ms);
-
-/**
- * @brief Get the update interval currently used for the volume meter
- * @param volmeter pointer to the volume meter object
- * @return update interval in ms
- */
-EXPORT unsigned int obs_volmeter_get_update_interval(obs_volmeter_t *volmeter);
-
 /**
  * @brief Get the number of channels which are configured for this source.
  * @param volmeter pointer to the volume meter object