zynaddsubfx

commit 0adbb0532845d8f10d3b4636a95c59b301d10d2c
parent 3b8e3f871fda2f995adf66d436e68addf393af39
Author: fundamental <mark.d.mccurry@gmail.com>
Date:   Thu,  8 Oct 2009 21:19:16 -0400

ADnote: started to use memset/memcpy

Started to use memset/memcpy based upon suggestion by Alan Calvert

Diffstat:
M
ChangeLog
 | 
3
+++
M
src/Synth/ADnote.cpp
 | 
23
++++++++---------------

2 files changed, 11 insertions(+), 15 deletions(-)
diff --git a/ChangeLog b/ChangeLog
@@ -950,3 +950,6 @@
 06 Oct 2009 (Mark McCurry)
 	    - Added first simple profiling test
 
+08 Oct 2009 (Mark McCurry)
+	    - Started to see if memset/memcpy offer performance benifits when
+	      widely used
diff --git a/src/Synth/ADnote.cpp b/src/Synth/ADnote.cpp
@@ -22,7 +22,7 @@
 #include <math.h>
 #include <stdlib.h>
 #include <stdio.h>
-
+#include <string.h>
 
 #include "../globals.h"
 #include "../Misc/Util.h"
@@ -590,7 +590,7 @@ void ADnote::KillVoice(int nvoice)
     if ((NoteVoicePar[nvoice].FMEnabled!=NONE)&&(NoteVoicePar[nvoice].FMVoice<0)) delete []NoteVoicePar[nvoice].FMSmp;
 
     if (NoteVoicePar[nvoice].VoiceOut!=NULL)
-        for (int i=0;i<SOUND_BUFFER_SIZE;i++) NoteVoicePar[nvoice].VoiceOut[i]=0.0;//do not delete, yet: perhaps is used by another voice
+        memset(NoteVoicePar[nvoice].VoiceOut, 0, SOUND_BUFFER_SIZE * sizeof(REALTYPE));//do not delete, yet: perhaps is used by another voice
 
     NoteVoicePar[nvoice].Enabled=OFF;
 };
@@ -1301,18 +1301,13 @@ int ADnote::noteout(REALTYPE *outl,REALTYPE *outr)
 {
     int i,nvoice;
 
-    for (i=0;i<SOUND_BUFFER_SIZE;i++) {
-        outl[i]=denormalkillbuf[i];
-        outr[i]=denormalkillbuf[i];
-    };
+    memcpy(outl, denormalkillbuf, SOUND_BUFFER_SIZE*sizeof(REALTYPE));
+    memcpy(outr, denormalkillbuf, SOUND_BUFFER_SIZE*sizeof(REALTYPE));
 
     if (NoteEnabled==OFF) return(0);
 
-    for (i=0;i<SOUND_BUFFER_SIZE;i++) {
-        bypassl[i]=0.0;
-        bypassr[i]=0.0;
-    };
-
+    memset(bypassl, 0, SOUND_BUFFER_SIZE*sizeof(REALTYPE));
+    memset(bypassr, 0, SOUND_BUFFER_SIZE*sizeof(REALTYPE));
     computecurrentparameters();
 
     for (nvoice=0;nvoice<NUM_VOICES;nvoice++) {
@@ -1512,10 +1507,8 @@ int ADnote::noteout(REALTYPE *outl,REALTYPE *outr)
     // Apply legato-specific sound signal modifications
     if (Legato.silent) { // Silencer
         if (Legato.msg!=LM_FadeIn) {
-            for (i=0;i<SOUND_BUFFER_SIZE;i++) {
-                outl[i]=0.0;
-                outr[i]=0.0;
-            }
+            memset(outl, 0, SOUND_BUFFER_SIZE * sizeof(REALTYPE));
+            memset(outl, 0, SOUND_BUFFER_SIZE * sizeof(REALTYPE));
         }
     }
     switch (Legato.msg) {