Updated per comments pull #90.

libobs/media-io/audio-io.c

@@ -711,6 +711,11 @@ uint32_t audio_output_samplerate(audio_t audio)
 	return audio ? audio->info.samples_per_sec : 0;
 }
 
+/* On some platforms, max() may already be defined */
+#ifndef max
+#define max(a, b)  ((a) > (b) ? (a) : (b))
+#endif
+
 /* TODO: Optimization of volume multiplication functions */
 
 static inline int mul_vol_u8bit(void *array, float volume, size_t total_num)
@@ -798,15 +803,15 @@ static inline int mul_vol_float(void *array, float volume, size_t total_num)
 
 	for (size_t i = 0; i < total_num; i++) {
 		vals[i] *= volume;
-		maxVol = max(maxVol, (float)fabs(vals[i]));
+		maxVol = fmaxf(maxVol, (float)fabs(vals[i]));
 	}
 
 	return (int)(maxVol * 10000.f);
 }
 
-// [Danni] changed to int for volume feedback. Seems like the most logical 
-//		   place to calculate this to avoid unnessisary iterations.
-//		   scaled to max of 10000.
+/* [Danni] changed to int for volume feedback. Seems like the most logical 
+		   place to calculate this to avoid unnessisary iterations.
+		   scaled to max of 10000. */
 
 static int audio_line_place_data_pos(struct audio_line *line,
 		const struct audio_data *data, size_t position)

libobs/obs-source.c

@@ -29,8 +29,6 @@
 #include "obs.h"
 #include "obs-internal.h"
 
-
-
 static inline bool source_valid(struct obs_source *source)
 {
 	return source && source->context.data;
@@ -82,7 +80,7 @@ static const char *source_signals[] = {
 	"void show(ptr source)",
 	"void hide(ptr source)",
 	"void volume(ptr source, in out float volume)",
-	"void volumelevel(ptr source, in out float volume)",
+	"void volumelevel(ptr source, in out int volume)",
 	NULL
 };
 
@@ -1617,7 +1615,6 @@ void obs_source_updatevolumelevel(obs_source_t source, int volume)
 	}
 }
 
-
 static void set_tree_preset_vol(obs_source_t parent, obs_source_t child,
 		void *param)
 {

obs/volume-control.cpp

@@ -18,8 +18,8 @@ void VolControl::OBSVolumeChanged(void *data, calldata_t calldata)
 }
 
 
-// [Danni] This may be a bit too resource intensive for such a simple 
-//		   application.
+/* [Danni] This may be a bit too resource intensive for such a simple 
+		   application. */
 
 void VolControl::OBSVolumeLevel(void *data, calldata_t calldata)
 {