1 files changed, 4 insertions, 4 deletions

diff --git a/servers/audio_server.cpp b/servers/audio_server.cpp
index 026bc6675a..86bdd13c80 100644
--- a/servers/audio_server.cpp
+++ b/servers/audio_server.cpp
@@ -1120,7 +1120,7 @@ float AudioServer::get_playback_speed_scale() const {
 	return playback_speed_scale;
 }
 
-void AudioServer::start_playback_stream(Ref<AudioStreamPlayback> p_playback, StringName p_bus, Vector<AudioFrame> p_volume_db_vector, float p_start_time, float p_pitch_scale) {
+void AudioServer::start_playback_stream(Ref<AudioStreamPlayback> p_playback, const StringName &p_bus, Vector<AudioFrame> p_volume_db_vector, float p_start_time, float p_pitch_scale) {
 	ERR_FAIL_COND(p_playback.is_null());
 
 	HashMap<StringName, Vector<AudioFrame>> map;
@@ -1129,7 +1129,7 @@ void AudioServer::start_playback_stream(Ref<AudioStreamPlayback> p_playback, Str
 	start_playback_stream(p_playback, map, p_start_time, p_pitch_scale);
 }
 
-void AudioServer::start_playback_stream(Ref<AudioStreamPlayback> p_playback, HashMap<StringName, Vector<AudioFrame>> p_bus_volumes, float p_start_time, float p_pitch_scale, float p_highshelf_gain, float p_attenuation_cutoff_hz) {
+void AudioServer::start_playback_stream(Ref<AudioStreamPlayback> p_playback, const HashMap<StringName, Vector<AudioFrame>> &p_bus_volumes, float p_start_time, float p_pitch_scale, float p_highshelf_gain, float p_attenuation_cutoff_hz) {
 	ERR_FAIL_COND(p_playback.is_null());
 
 	AudioStreamPlaybackListNode *playback_node = new AudioStreamPlaybackListNode();
@@ -1188,7 +1188,7 @@ void AudioServer::stop_playback_stream(Ref<AudioStreamPlayback> p_playback) {
 	} while (!playback_node->state.compare_exchange_strong(old_state, new_state));
 }
 
-void AudioServer::set_playback_bus_exclusive(Ref<AudioStreamPlayback> p_playback, StringName p_bus, Vector<AudioFrame> p_volumes) {
+void AudioServer::set_playback_bus_exclusive(Ref<AudioStreamPlayback> p_playback, const StringName &p_bus, Vector<AudioFrame> p_volumes) {
 	ERR_FAIL_COND(p_volumes.size() != MAX_CHANNELS_PER_BUS);
 
 	HashMap<StringName, Vector<AudioFrame>> map;
@@ -1197,7 +1197,7 @@ void AudioServer::set_playback_bus_exclusive(Ref<AudioStreamPlayback> p_playback
 	set_playback_bus_volumes_linear(p_playback, map);
 }
 
-void AudioServer::set_playback_bus_volumes_linear(Ref<AudioStreamPlayback> p_playback, HashMap<StringName, Vector<AudioFrame>> p_bus_volumes) {
+void AudioServer::set_playback_bus_volumes_linear(Ref<AudioStreamPlayback> p_playback, const HashMap<StringName, Vector<AudioFrame>> &p_bus_volumes) {
 	ERR_FAIL_COND(p_bus_volumes.size() > MAX_BUSES_PER_PLAYBACK);
 
 	AudioStreamPlaybackListNode *playback_node = _find_playback_list_node(p_playback);