""

svn path=/trunk/; revision=793

12 files changed, 227 insertions, 76 deletions

diff --git a/externals/grill/flext/config-pd-darwin.txt b/externals/grill/flext/config-pd-darwin.txt
index a50a2f28..7b1a0fb9 100644
--- a/externals/grill/flext/config-pd-darwin.txt
+++ b/externals/grill/flext/config-pd-darwin.txt
@@ -25,7 +25,7 @@ INSTDIR=/usr/local/pd/flext
 
 # additional compiler flags
 # (check if they fit for your system!)
-UFLAGS=-DFLEXT_USE_SIMD -malign-power -maltivec 
+UFLAGS=-DFLEXT_USE_SIMD -malign-power -maltivec -faltivec
 
 # define to use old library naming for backwards compatibility
 # ("flext.a" instead of new "libflext.a" etc.)
diff --git a/externals/grill/flext/config-pd-linux.txt b/externals/grill/flext/config-pd-linux.txt
index beaa086a..97bbb655 100644
--- a/externals/grill/flext/config-pd-linux.txt
+++ b/externals/grill/flext/config-pd-linux.txt
@@ -16,7 +16,7 @@ SNDOBJ=/usr/local/include/SndObj
 
 # where is the STK include directory?
 # (leave blank or comment out to disable STK support)
-# STK=/usr/src/stk-4.1.1/include
+STK=/usr/src/stk-4.1.1/include
 
 # where should flext libraries be built?
 TARGDIR=./pd-linux
diff --git a/externals/grill/flext/flext.cw b/externals/grill/flext/flext.cw
index f952b7f9..b8c40866 100644
--- a/externals/grill/flext/flext.cw
+++ b/externals/grill/flext/flext.cw
diff --git a/externals/grill/flext/source/flprefix.h b/externals/grill/flext/source/flprefix.h
index c27d1a67..e9e43e50 100755
--- a/externals/grill/flext/source/flprefix.h
+++ b/externals/grill/flext/source/flprefix.h
@@ -59,7 +59,7 @@ WARRANTIES, see the file, "license.txt," in this distribution.
 
 #define FLEXT_OSAPI_MAC_CLASSIC 2
 #define FLEXT_OSAPI_MAC_CARBON 3
-#define FLEXT_OSAPI_MAC_OSX 4
+#define FLEXT_OSAPI_MAC_MACH 4
 
 #define FLEXT_OSAPI_WIN_NATIVE 5  // WIN32 Platform
 #define FLEXT_OSAPI_WIN_POSIX 6	   // POSIX API (e.g. cygwin)
@@ -188,9 +188,9 @@ WARRANTIES, see the file, "license.txt," in this distribution.
 	#endif
 	
 	#ifndef FLEXT_OSAPI
-		#if TARGET_API_MAC_OSX
-			// this has the precedence (OSX can also be Carbon, of course)
-			#define FLEXT_OSAPI FLEXT_OSAPI_MAC_OSX
+		#if TARGET_API_MAC_MACH
+			// this has the precedence (MACH also supports Carbon, of course)
+			#define FLEXT_OSAPI FLEXT_OSAPI_MAC_MACH
 		#elif TARGET_API_MAC_CARBON
 			#define FLEXT_OSAPI FLEXT_OSAPI_MAC_CARBON
 		#else
@@ -235,7 +235,7 @@ WARRANTIES, see the file, "license.txt," in this distribution.
 
 	#ifndef FLEXT_OSAPI
 		#if FLEXT_OS == FLEXT_OS_MAC
-			#define FLEXT_OSAPI FLEXT_OSAPI_MAC_OSX
+			#define FLEXT_OSAPI FLEXT_OSAPI_MAC_MACH
 		#elif FLEXT_OS == FLEXT_OS_WIN
 			#define FLEXT_OSAPI FLEXT_OSAPI_WIN_POSIX
 		#elif FLEXT_OS == FLEXT_OS_LINUX || FLEXT_OS == FLEXT_OS_IRIX
diff --git a/externals/grill/flext/source/flsimd.cpp b/externals/grill/flext/source/flsimd.cpp
index 88cbdb89..4d92aa48 100755
--- a/externals/grill/flext/source/flsimd.cpp
+++ b/externals/grill/flext/source/flsimd.cpp
@@ -35,15 +35,24 @@ WARRANTIES, see the file, "license.txt," in this distribution.
         #include <xmmintrin.h> // SSE
         #include <emmintrin.h> // SSE2
         #include <mm3dnow.h> // 3DNow!
-//    #elif FLEXT_CPU == FLEXT_CPU_PPC && defined(__MWERKS__)
-//        #include <Altivec.h>
-    #elif FLEXT_CPU == FLEXT_CPU_PPC && defined(__MWERKS__)
-		#include <vBasicOps.h>
+    #elif FLEXT_CPU == FLEXT_CPU_PPC && defined(__MWERKS__) && defined(__ALTIVEC__)
+   		#if FLEXT_OSAPI == FLEXT_OSAPI_MAC_MACH
+			 #include <sys/sysctl.h> 
+    	#else
+			 #include <Gestalt.h> 
+   		#endif
+    
+		#pragma altivec_model on
+
+    	#include <altivec.h>
+//		#include <vBasicOps.h>
 		#include <vectorOps.h>
-    #elif FLEXT_CPU == FLEXT_CPU_PPC && defined(__GNUG__)
-		#include <vecLib/vBasicOps.h>
+    #elif FLEXT_CPU == FLEXT_CPU_PPC && defined(__GNUG__) && defined(__ALTIVEC__)
+		#include <sys/sysctl.h> 
+//		#include <vecLib/vBasicOps.h>
 		#include <vecLib/vectorOps.h>
     #endif
+
 #endif // FLEXT_USE_SIMD
 
 static unsigned long setsimdcaps();
@@ -263,10 +272,85 @@ static unsigned long setsimdcaps()
     if(cpuinfo.os_support&_CPU_FEATURE_3DNOW) simdflags += flext::simd_3dnow;
     if(cpuinfo.os_support&_CPU_FEATURE_SSE) simdflags += flext::simd_sse;
     if(cpuinfo.os_support&_CPU_FEATURE_SSE2) simdflags += flext::simd_sse2;
+#elif FLEXT_CPU == FLEXT_CPU_PPC 
+
+    #if FLEXT_OSAPI == FLEXT_OSAPI_MAC_MACH
+
+	int selectors[2] = { CTL_HW, HW_VECTORUNIT }; 
+	int hasVectorUnit = 0; 
+	size_t length = sizeof(hasVectorUnit); 
+	int error = sysctl(selectors, 2, &hasVectorUnit, &length, NULL, 0); 
+
+	if(!error && hasVectorUnit != 0) simdflags += flext::simd_altivec; 
+		
+	#else
+
+	long cpuAttributes; 
+	Boolean hasAltiVec = false; 
+	OSErr err = Gestalt( gestaltPowerPCProcessorFeatures, &cpuAttributes ); 
+
+	if( noErr == err ) 
+	if(( 1 << gestaltPowerPCHasVectorInstructions) & cpuAttributes) simdflags += flext::simd_altivec; 
+
+	#endif
 #endif
     return simdflags;
 }
 
+
+#if FLEXT_CPU == FLEXT_CPU_PPC && defined(__ALTIVEC__)
+
+/* functions for misaligned vector data - taken from the Altivec tutorial of Ian Ollmann, Ph.D. */
+
+//! Load a vector from an unaligned location in memory
+inline vector unsigned char LoadUnaligned( vector unsigned char *v )
+{
+	vector unsigned char permuteVector = vec_lvsl( 0, (int*) v );
+	vector unsigned char low = vec_ld( 0, v );
+	vector unsigned char high = vec_ld( 16, v );
+	return vec_perm( low, high, permuteVector );
+}
+
+//! Store a vector to an unaligned location in memory
+inline void StoreUnaligned( vector unsigned char v, vector unsigned char *where)
+{
+	// Load the surrounding area
+	vector unsigned char low = vec_ld( 0, where );
+	vector unsigned char high = vec_ld( 16, where );
+	// Prepare the constants that we need
+	vector unsigned char permuteVector = vec_lvsr( 0, (int*) where );
+
+	vector unsigned char oxFF = (vector unsigned char)vec_splat_s8( -1 );
+	vector unsigned char ox00 = (vector unsigned char)vec_splat_s8( 0 );
+	// Make a mask for which parts of the vectors to swap out
+	vector unsigned char mask = vec_perm( ox00, oxFF, permuteVector );
+	// Right rotate our input data
+	v = vec_perm( v, v, permuteVector );
+	// Insert our data into the low and high vectors
+	low = vec_sel( v, low, mask );
+	high = vec_sel( high, v, mask );
+	// Store the two aligned result vectors
+	vec_st( low, 0, where );
+	vec_st( high, 16, where );
+}
+
+inline vector float LoadUnaligned(float *v )
+{
+	return (vector float)LoadUnaligned((vector unsigned char *)v);
+}
+
+inline void StoreUnaligned( vector float v,float *where)
+{
+	return StoreUnaligned((vector unsigned char)v,(vector unsigned char *)where);
+}
+
+inline bool IsVectorAligned(const void *where) 
+{
+	return reinterpret_cast<unsigned long>(where)&(sizeof(vector float)-1) == 0; 
+}
+#endif
+
+
 #else // FLEXT_USE_SIMD
 static unsigned long setsimdcaps() { return 0; }
 #endif // FLEXT_USE_SIMD
@@ -395,11 +479,11 @@ loopuu:
        	while(cnt--) *(dst++) = *(src++); 
     }
     else
-#elif FLEXT_OS == FLEXT_OS_MAC && defined(__VEC__) && defined(__VECTOROPS__)
-	{
+#elif FLEXT_CPU == FLEXT_CPU_PPC && defined(__VEC__) && defined(__VECTOROPS__)
+    {
    	    int n = cnt>>2,n4 = n<<2;
         cnt -= n4;
-		vScopy(n4,src,dst);
+		vScopy(n4,(vector float *)src,(vector float *)dst);
 		src += n4,dst += n4;
        	while(cnt--) *(dst++) = *(src++); 
 	}
@@ -474,7 +558,24 @@ loopu:
       	while(cnt--) *(dst++) = s; 
     }
     else
-#endif // _MSC_VER
+#elif 0 //FLEXT_CPU == FLEXT_CPU_PPC && defined(__VEC__)
+    if(GetSIMDCapabilities()&simd_altivec && IsVectorAligned(dst)) {
+		vector float svec = IsVectorAligned(&s)?vec_splat(vec_ld(0,(vector float *)&s),0):LoadUnaligned(&s);
+   	    int n = cnt>>4,n4 = n<<4;
+        cnt -= n4;
+
+		while(n--) {
+			vec_st(svec,0,dst);
+			vec_st(svec,16,dst);
+			vec_st(svec,32,dst);
+			vec_st(svec,48,dst);
+			dst += 64;
+		}
+
+       	while(cnt--) *(dst++) = s; 
+	}
+	else
+#endif
 #endif // FLEXT_USE_SIMD
     {
 	    int n = cnt>>3;
@@ -587,10 +688,24 @@ loopu:
 	    while(cnt--) *(dst++) = *(src++)*op; 
     }
     else
-#elif FLEXT_OS == FLEXT_OS_MAC && defined(__VEC__) && defined(__VECTOROPS__)
-	{
-		vsmul(src,1,&op,dst,1,cnt);
+#elif 0 //FLEXT_CPU == FLEXT_CPU_PPC && defined(__VEC__)
+    if(GetSIMDCapabilities()&simd_altivec && IsVectorAligned(src) && IsVectorAligned(dst)) {
+		vector float opvec = IsVectorAligned(&op)?vec_splat(vec_ld(0,(vector float *)&op),0):LoadUnaligned(&op);
+		vector float addvec = (vector float)vec_splat_u32(0);
+   	    int n = cnt>>4,n4 = n<<4;
+        cnt -= n4;
+
+		while(n--) {
+			vec_st(vec_madd(vec_ld( 0,src),opvec,addvec), 0,dst);
+			vec_st(vec_madd(vec_ld(16,src),opvec,addvec),16,dst);
+			vec_st(vec_madd(vec_ld(32,src),opvec,addvec),32,dst);
+			vec_st(vec_madd(vec_ld(48,src),opvec,addvec),48,dst);
+			src += 64,dst += 64;
+		}
+
+       	while(cnt--) *(dst++) = *(src++)*op; 
 	}
+	else
 #endif // _MSC_VER
 #endif // FLEXT_USE_SIMD
     {
@@ -809,10 +924,10 @@ loopuu:
 	    while(cnt--) *(dst++) = *(src++) * *(op++); 
     }
     else
-#elif FLEXT_OS == FLEXT_OS_MAC && defined(__VEC__) && defined(__VECTOROPS__)
-	{
-		vsmul(src,1,&op,dst,1,cnt);
+#elif 0 // FLEXT_CPU == FLEXT_CPU_PPC && defined(__VEC__)
+    if(GetSIMDCapabilities()&simd_sse) {
 	}
+	else
 #endif // _MSC_VER
 #endif // FLEXT_USE_SIMD
     {
@@ -939,16 +1054,10 @@ loopu:
 	    while(cnt--) *(dst++) = *(src++)+op; 
     }
     else
-/*
-#elif FLEXT_OS == FLEXT_OS_MAC && defined(__VEC__) && defined(__VECTOROPS__)
-	{
-   	    int n = cnt>>2,n4 = n<<2;
-        cnt -= n4;
-		vScopy(n4,src,dst);
-		src += n4,dst += n4;
-       	while(cnt--) *(dst++) = *(src++); 
+#elif 0 //FLEXT_CPU == FLEXT_CPU_PPC && defined(__VEC__)
+    if(GetSIMDCapabilities()&simd_altivec) {
 	}
-*/
+	else
 #endif // _MSC_VER
 #endif // FLEXT_USE_SIMD
     {
@@ -1168,16 +1277,9 @@ void flext::AddSamples(t_sample *dst,const t_sample *src,const t_sample *op,int
 	    while(cnt--) *(dst++) = *(src++) + *(op++); 
     }
     else
-/*
-#elif FLEXT_OS == FLEXT_OS_MAC && defined(__VEC__) && defined(__VECTOROPS__)
-	{
-   	    int n = cnt>>2,n4 = n<<2;
-        cnt -= n4;
-		vScopy(n4,src,dst);
-		src += n4,dst += n4;
-       	while(cnt--) *(dst++) = *(src++); 
+#elif 0 //FLEXT_CPU == FLEXT_CPU_PPC && defined(__VEC__)
+    {
 	}
-*/
 #endif // _MSC_VER
 #endif // FLEXT_USE_SIMD
     {
@@ -1316,16 +1418,10 @@ loopu:
 	    while(cnt--) *(dst++) = *(src++)*opmul+opadd; 
     }
     else
-/*
-#elif FLEXT_OS == FLEXT_OS_MAC && defined(__VEC__) && defined(__VECTOROPS__)
-	{
-   	    int n = cnt>>2,n4 = n<<2;
-        cnt -= n4;
-		vScopy(n4,src,dst);
-		src += n4,dst += n4;
-       	while(cnt--) *(dst++) = *(src++); 
+#elif 0 //FLEXT_CPU == FLEXT_CPU_PPC && defined(__VEC__)
+    if(GetSIMDCapabilities()&simd_altivec) {
 	}
-*/
+	else
 #endif // _MSC_VER
 #endif // FLEXT_USE_SIMD
     {
diff --git a/externals/grill/flext/source/flsupport.h b/externals/grill/flext/source/flsupport.h
index 5c222205..6db7a7b0 100644
--- a/externals/grill/flext/source/flsupport.h
+++ b/externals/grill/flext/source/flsupport.h
@@ -969,6 +969,7 @@ public:
 			simd_altivec = 0x10
 		};
 		
+		/*! Check for SIMD capabilities of the CPU */
 		static unsigned long GetSIMDCapabilities();
 
 
diff --git a/externals/grill/flext/source/fltimer.cpp b/externals/grill/flext/source/fltimer.cpp
index 6767c186..dffe1eb6 100755
--- a/externals/grill/flext/source/fltimer.cpp
+++ b/externals/grill/flext/source/fltimer.cpp
@@ -16,7 +16,7 @@ WARRANTIES, see the file, "license.txt," in this distribution.
 
 #if FLEXT_OS == FLEXT_OS_WIN
 #include <windows.h>
-#elif FLEXT_OS == FLEXT_OS_LINUX || FLEXT_OS == FLEXT_OS_IRIX || FLEXT_OSAPI == FLEXT_OSAPI_MAC_OSX
+#elif FLEXT_OS == FLEXT_OS_LINUX || FLEXT_OS == FLEXT_OS_IRIX || FLEXT_OSAPI == FLEXT_OSAPI_MAC_MACH
 #include <unistd.h>
 #include <sys/time.h>
 #elif FLEXT_OS == FLEXT_OS_MAC
@@ -74,7 +74,7 @@ double flext::GetOSTime()
         SystemTimeToFileTime(&systm,&fltm);
         tm = (double)((LARGE_INTEGER *)&fltm)->QuadPart*0.001;
     }
-#elif FLEXT_OS == FLEXT_OS_LINUX || FLEXT_OS == FLEXT_OS_IRIX || FLEXT_OSAPI == FLEXT_OSAPI_MAC_OSX // POSIX
+#elif FLEXT_OS == FLEXT_OS_LINUX || FLEXT_OS == FLEXT_OS_IRIX || FLEXT_OSAPI == FLEXT_OSAPI_MAC_MACH // POSIX
 	timeval tmv;
 	gettimeofday(&tmv,NULL);
 	tm = tmv.tv_sec+tmv.tv_usec*1.e-6;
@@ -92,7 +92,7 @@ void flext::Sleep(double s)
 {
 #if FLEXT_OS == FLEXT_OS_WIN
 	::Sleep((long)(s*1000.));
-#elif FLEXT_OS == FLEXT_OS_LINUX || FLEXT_OS == FLEXT_OS_IRIX || FLEXT_OSAPI == FLEXT_OSAPI_MAC_OSX // POSIX
+#elif FLEXT_OS == FLEXT_OS_LINUX || FLEXT_OS == FLEXT_OS_IRIX || FLEXT_OSAPI == FLEXT_OSAPI_MAC_MACH // POSIX
 	usleep((long)(s*1000000.));
 #elif FLEXT_OS == FLEXT_OS_MAC // that's just for OS9 & Carbon!
 	UnsignedWide tick;
diff --git a/externals/grill/flext/source/flutil.cpp b/externals/grill/flext/source/flutil.cpp
index 5081c245..3c7c704d 100644
--- a/externals/grill/flext/source/flutil.cpp
+++ b/externals/grill/flext/source/flutil.cpp
@@ -18,7 +18,7 @@ WARRANTIES, see the file, "license.txt," in this distribution.
 #if FLEXT_OS == FLEXT_OS_WIN
 #include <windows.h>
 #elif FLEXT_OS == FLEXT_OS_MAC
-	#if FLEXT_OSAPI != FLEXT_OSAPI_MAC_OSX
+	#if FLEXT_OSAPI != FLEXT_OSAPI_MAC_MACH
 		#include <MacMemory.h>
 	#else
 		#include <Carbon/Carbon.h>
diff --git a/externals/grill/xsample/source/groove.cpp b/externals/grill/xsample/source/groove.cpp
index 4759812c..f70846f7 100644
--- a/externals/grill/xsample/source/groove.cpp
+++ b/externals/grill/xsample/source/groove.cpp
@@ -498,6 +498,11 @@ V xgroove::s_pos_loop(I n,S *const *invecs,S *const *outvecs)
 	S *pos = outvecs[outchns];
 	BL lpbang = false;
 
+#ifdef __VEC__
+	// prefetch cache
+	vec_dst(speed,GetPrefetchConstant(1,n>>2,0),0);
+#endif
+
 	const D smin = curmin,smax = curmax,plen = smax-smin; //curlen;
 
 	if(buf && plen > 0) {
@@ -529,6 +534,10 @@ V xgroove::s_pos_loop(I n,S *const *invecs,S *const *outvecs)
 	else 
 		s_pos_off(n,invecs,outvecs);
 		
+#ifdef __VEC__
+	vec_dss(0);
+#endif
+
 	if(lpbang) ToOutBang(outchns+3);
 }
 
diff --git a/externals/grill/xsample/source/inter.h b/externals/grill/xsample/source/inter.h
index 3f8ea5f8..d5f2b4ac 100755
--- a/externals/grill/xsample/source/inter.h
+++ b/externals/grill/xsample/source/inter.h
@@ -38,7 +38,7 @@ TMPLDEF V xinter::st_play1(const S *bdt,const I smin,const I smax,const I n,cons
 		}
 		else if(oint >= smax) {
 			// position > last sample ... take only last sample
-			fp = bdt+(smax-1)*BCHNS;
+			fp = bdt+(smin == smax?smin:smax-1)*BCHNS;
 		}
 		else {
 			// normal
@@ -116,50 +116,73 @@ TMPLDEF V xinter::st_play4(const S *bdt,const I smin,const I smax,const I n,cons
 
 	// position info are frame units
 	const S *pos = invecs[0];
+
+#ifdef __VEC__
+	// prefetch cache
+	vec_dst(pos,GetPrefetchConstant(1,n>>2,0),0);
+	const int pf = GetPrefetchConstant(BCHNS,1,16*BCHNS);
+#endif
+
 	S *const *sig = outvecs;
 	register I si = 0;
 	
 	// 4-point interpolation
 	// ---------------------
 	const I maxo = smax-1; // last sample in play region
+	const S *maxp = bdt+maxo*BCHNS;  // pointer to last sample
 
 	for(I i = 0; i < n; ++i,++si) {	
 		F o = *(pos++);
-		register I oint = (I)o,ointm,oint1,oint2;
+		register I oint = (I)o;
+		register F frac;
+		register const S *fa,*fb,*fc,*fd;
 
 		if(oint <= smin) { 
 			if(oint < smin) oint = smin,o = (float)smin;
-			// position is first simple
-			ointm = smin; // first sample 
-			oint1 = oint+1;
-			oint2 = oint1+1;
+			
+			fa = bdt+smin*BCHNS;  // position is first sample
+			fb = bdt+oint*BCHNS;
+						
+			frac = o-oint;
+			fc = fb+BCHNS;
+			fd = fc+BCHNS;
 		}
 		else if(oint >= maxo-2) { 
 			if(oint > maxo) oint = maxo,o = (float)smax;
-			ointm = oint-1;
-			oint1 = oint >= maxo?maxo:oint+1;
-			oint2 = oint1 >= maxo?maxo:oint1+1;
+			frac = o-oint;
+
+			fb = bdt+oint*BCHNS;
+			fa = fb-BCHNS;   // CACHE!
+			
+			// \TODO what about wrap-around???
+			fc = fb >= maxp?maxp:fb+BCHNS;	// ev. CACHE!		
+			fd = fc >= maxp?maxp:fc+BCHNS;	// ev. CACHE!
 		}
 		else {
-			ointm = oint-1;
-			oint1 = oint+1;
-			oint2 = oint1+1;
+			fa = bdt+oint*BCHNS-BCHNS;
+			frac = o-oint;
+			fb = fa+BCHNS;
+#ifdef __VEC__
+			vec_dst(fa,pf,0);
+#endif
+			fc = fb+BCHNS;
+			fd = fc+BCHNS;
 		}
 
-		register F frac = o-oint;
+		register F f1 = 0.5f*(frac-1.0f);
+		register F f3 = frac*3.0f-1.0f;
 		
-		register const S *fa = bdt+ointm*BCHNS;
-		register const S *fb = bdt+oint*BCHNS;
-		register const S *fc = bdt+oint1*BCHNS;
-		register const S *fd = bdt+oint2*BCHNS;
-
 		for(I ci = 0; ci < OCHNS; ++ci) {
+			const F amdf = (fa[ci]-fd[ci])*frac;
 			const F cmb = fc[ci]-fb[ci];
-			sig[ci][si] = fb[ci] + frac*( 
-				cmb - 0.5f*(frac-1.0f) * ((fa[ci]-fd[ci]+3.0f*cmb)*frac + (fb[ci]-fa[ci]-cmb))
-			);
+			const F bma = fb[ci]-fa[ci];
+			sig[ci][si] = fb[ci] + frac*( cmb - f1 * ( amdf+bma+cmb*f3 ) );
 		}
 	}
+	
+#ifdef __VEC__
+	vec_dss(0);
+#endif
 
 	// clear rest of output channels (if buffer has less channels)
 	for(I ci = OCHNS; ci < outchns; ++ci) ZeroSamples(sig[ci],n);
diff --git a/externals/grill/xsample/source/main.h b/externals/grill/xsample/source/main.h
index b3b8a499..61c0bf4d 100644
--- a/externals/grill/xsample/source/main.h
+++ b/externals/grill/xsample/source/main.h
@@ -12,7 +12,7 @@ WARRANTIES, see the file, "license.txt," in this distribution.
 #define __XSAMPLE_H
 
 
-#define XSAMPLE_VERSION "0.3.0pre12"
+#define XSAMPLE_VERSION "0.3.0pre13"
 
 
 #define FLEXT_ATTRIBUTES 1 
@@ -72,6 +72,28 @@ WARRANTIES, see the file, "license.txt," in this distribution.
 	#define STD
 #endif
 
+#ifdef __ALTIVEC__
+#if FLEXT_CPU == FLEXT_CPU_PPC && defined(__MWERKS__)
+	#pragma altivec_model on
+	#include <vBasicOps.h>
+	#include <vectorOps.h>
+#elif FLEXT_CPU == FLEXT_CPU_PPC && defined(__GNUG__)
+	#include <vecLib/vBasicOps.h>
+	#include <vecLib/vectorOps.h>
+#endif
+
+	// Initialize a prefetch constant for use with vec_dst(), vec_dstt(), vec_dstst or vec_dststt
+	// Taken from the "AltiVec tutorial" by Ian Ollmann, Ph.D. 
+	inline UInt32 GetPrefetchConstant( int blockSizeInVectors,int blockCount,int blockStride )
+	{
+//		FLEXT_ASSERT( blockSizeInVectors > 0 && blockSizeInVectors <= 32 );
+//		FLEXT_ASSERT( blockCount > 0 && blockCount <= 256 );
+//		FLEXT_ASSERT( blockStride > MIN_SHRT && blockStride <= MAX_SHRT );
+		return ((blockSizeInVectors << 24) & 0x1F000000) |
+			((blockCount << 16) && 0x00FF0000) |
+			(blockStride & 0xFFFF);
+	}
+#endif
 
 class xsample:
 	public flext_dsp
diff --git a/externals/grill/xsample/xsample.cw b/externals/grill/xsample/xsample.cw
index 8065e314..2a4c0938 100755
--- a/externals/grill/xsample/xsample.cw
+++ b/externals/grill/xsample/xsample.cw