mixer/software, filter/volume: add "noexcept"

src/filter/plugins/VolumeFilterPlugin.cxx

@@ -37,11 +37,11 @@ public:
 		pv.Open(out_audio_format.format);
 	}
 
-	unsigned GetVolume() const {
+	unsigned GetVolume() const noexcept {
 		return pv.GetVolume();
 	}
 
-	void SetVolume(unsigned _volume) {
+	void SetVolume(unsigned _volume) noexcept {
 		pv.SetVolume(_volume);
 	}
 
@@ -81,7 +81,7 @@ const FilterPlugin volume_filter_plugin = {
 };
 
 unsigned
-volume_filter_get(const Filter *_filter)
+volume_filter_get(const Filter *_filter) noexcept
 {
 	const VolumeFilter *filter =
 		(const VolumeFilter *)_filter;
@@ -90,7 +90,7 @@ volume_filter_get(const Filter *_filter)
 }
 
 void
-volume_filter_set(Filter *_filter, unsigned volume)
+volume_filter_set(Filter *_filter, unsigned volume) noexcept
 {
 	VolumeFilter *filter = (VolumeFilter *)_filter;
 

src/filter/plugins/VolumeFilterPlugin.hxx

@@ -23,9 +23,9 @@
 class Filter;
 
 unsigned
-volume_filter_get(const Filter *filter);
+volume_filter_get(const Filter *filter) noexcept;
 
 void
-volume_filter_set(Filter *filter, unsigned volume);
+volume_filter_set(Filter *filter, unsigned volume) noexcept;
 
 #endif

src/mixer/plugins/SoftwareMixerPlugin.cxx

@@ -44,7 +44,7 @@ public:
 	{
 	}
 
-	void SetFilter(Filter *_filter);
+	void SetFilter(Filter *_filter) noexcept;
 
 	/* virtual methods from class Mixer */
 	void Open() override {
@@ -101,7 +101,7 @@ const MixerPlugin software_mixer_plugin = {
 };
 
 inline void
-SoftwareMixer::SetFilter(Filter *_filter)
+SoftwareMixer::SetFilter(Filter *_filter) noexcept
 {
 	filter = _filter;
 
@@ -111,7 +111,7 @@ SoftwareMixer::SetFilter(Filter *_filter)
 }
 
 void
-software_mixer_set_filter(Mixer &mixer, Filter *filter)
+software_mixer_set_filter(Mixer &mixer, Filter *filter) noexcept
 {
 	SoftwareMixer &sm = (SoftwareMixer &)mixer;
 	sm.SetFilter(filter);

src/mixer/plugins/SoftwareMixerPlugin.hxx

@@ -30,6 +30,6 @@ class Filter;
  * volume_filter_set().
  */
 void
-software_mixer_set_filter(Mixer &mixer, Filter *filter);
+software_mixer_set_filter(Mixer &mixer, Filter *filter) noexcept;
 
 #endif