ProcessSound: do not optimize for special values

this makes the code easier to understand and the execution more predictable

src/minidexed.cpp

@@ -1354,8 +1354,6 @@ void CMiniDexed::ProcessSound (void)
 			float32_t tmp_float[nFrames*Channels];
 			int32_t tmp_int[nFrames*Channels];
 
-			if(nMasterVolume > 0.0)
-			{
 			// Convert dual float array (8 chan) to single int16 array (8 chan)
 			for(uint16_t i=0; i<nFrames;i++)
 			{
@@ -1363,23 +1361,12 @@ void CMiniDexed::ProcessSound (void)
 				// reading directly from the TG OutputLevel buffer with
 				// no additional processing.
 				for (uint8_t tg = 0; tg < Channels; tg++)
-					{
-						if(nMasterVolume >0.0 && nMasterVolume <1.0)
 				{
 					tmp_float[(i*Channels)+tg]=m_OutputLevel[tg][i] * nMasterVolume;
 				}
-						else if(nMasterVolume == 1.0)
-						{
-							tmp_float[(i*Channels)+tg]=m_OutputLevel[tg][i];
-						}
-					}
 			}
+
 			arm_float_to_q23(tmp_float,tmp_int,nFrames*Channels);
-			}
-			else
-			{
-				arm_fill_q31(0, tmp_int, nFrames*Channels);
-			}
 
 			// Prevent PCM510x analog mute from kicking in
 			for (uint8_t tg = 0; tg < Channels; tg++) 
@@ -1404,8 +1391,6 @@ void CMiniDexed::ProcessSound (void)
 			float32_t tmp_float[nFrames*2];
 			int32_t tmp_int[nFrames*2];
 
-			if(nMasterVolume > 0.0)
-			{
 			// get the mix buffer of all TGs
 			float32_t *SampleBuffer[2];
 			tg_mixer->getBuffers(SampleBuffer);
@@ -1457,24 +1442,12 @@ void CMiniDexed::ProcessSound (void)
 
 			// Convert dual float array (left, right) to single int16 array (left/right)
 			for(uint16_t i=0; i<nFrames;i++)
-				{
-					if(nMasterVolume >0.0 && nMasterVolume <1.0)
 			{
 				tmp_float[i*2]=SampleBuffer[indexL][i] * nMasterVolume;
 				tmp_float[(i*2)+1]=SampleBuffer[indexR][i] * nMasterVolume;
 			}
-					else if(nMasterVolume == 1.0)
-					{
-						tmp_float[i*2]=SampleBuffer[indexL][i];
-						tmp_float[(i*2)+1]=SampleBuffer[indexR][i];
-					}
-				}
+
 			arm_float_to_q23(tmp_float,tmp_int,nFrames*2);
-			}
-			else
-			{
-				arm_fill_q31(0, tmp_int, nFrames * 2);
-			}
 
 			// Prevent PCM510x analog mute from kicking in
 			if (tmp_int[nFrames * 2 - 1] == 0)