src/audio/SDL_mixer_MMX_VC.c
branchSDL-1.3
changeset 1721 1cc762cafff8
parent 1720 a1ebb17f9c52
child 1722 5daa04d862f1
--- a/src/audio/SDL_mixer_MMX_VC.c	Fri Jun 30 05:42:49 2006 +0000
+++ b/src/audio/SDL_mixer_MMX_VC.c	Fri Jun 30 05:50:35 2006 +0000
@@ -40,73 +40,80 @@
 void
 SDL_MixAudio_MMX_S16_VC(char *dst, char *src, unsigned int nSize, int volume)
 {
-	/* *INDENT-OFF* */
-    __asm {
-          push edi
-          push esi
-		  push ebx
-		  mov edi, dst          // edi = dst
-          mov esi, src          // esi = src
-          mov eax, volume       // eax = volume
-          mov ebx, nSize        // ebx = size
-          shr ebx, 4            // process 16 bytes per iteration = 8 samples
-          jz endS16
-		  pxor mm0, mm0
-		  movd mm0, eax         //%%eax,%%mm0
-          movq mm1, mm0         //%%mm0,%%mm1
-          psllq mm0, 16         //$16,%%mm0
-          por mm0, mm1          //%%mm1,%%mm0
-          psllq mm0, 16         //$16,%%mm0
-          por mm0, mm1          //%%mm1,%%mm0
-          psllq mm0, 16         //$16,%%mm0
-          por mm0, mm1          //%%mm1,%%mm0                   // mm0 = vol|vol|vol|vol
-#ifndef __WATCOMC__
-          align 16
-#endif
-      mixloopS16:
-		  movq mm1,[esi]        //(%%esi),%%mm1\n" // mm1 = a|b|c|d
-          movq mm2, mm1         //%%mm1,%%mm2\n" // mm2 = a|b|c|d
-          movq mm4,[esi + 8]    //8(%%esi),%%mm4\n" // mm4 = e|f|g|h
-            // pre charger le buffer dst dans mm7
-          movq mm7,[edi]        //(%%edi),%%mm7\n" // mm7 = dst[0]"
-            // multiplier par le volume
-          pmullw mm1, mm0       //%%mm0,%%mm1\n" // mm1 = l(a*v)|l(b*v)|l(c*v)|l(d*v)
-          pmulhw mm2, mm0       //%%mm0,%%mm2\n" // mm2 = h(a*v)|h(b*v)|h(c*v)|h(d*v)
-          movq mm5, mm4         //%%mm4,%%mm5\n" // mm5 = e|f|g|h
-          pmullw mm4, mm0       //%%mm0,%%mm4\n" // mm4 = l(e*v)|l(f*v)|l(g*v)|l(h*v)
-          pmulhw mm5, mm0       //%%mm0,%%mm5\n" // mm5 = h(e*v)|h(f*v)|h(g*v)|h(h*v)
-          movq mm3, mm1         //%%mm1,%%mm3\n" // mm3 = l(a*v)|l(b*v)|l(c*v)|l(d*v)
-          punpckhwd mm1, mm2    //%%mm2,%%mm1\n" // mm1 = a*v|b*v
-          movq mm6, mm4         //%%mm4,%%mm6\n" // mm6 = l(e*v)|l(f*v)|l(g*v)|l(h*v)
-          punpcklwd mm3, mm2    //%%mm2,%%mm3\n" // mm3 = c*v|d*v
-          punpckhwd mm4, mm5    //%%mm5,%%mm4\n" // mm4 = e*f|f*v
-          punpcklwd mm6, mm5    //%%mm5,%%mm6\n" // mm6 = g*v|h*v
-            // pre charger le buffer dst dans mm5
-          movq mm5,[edi + 8]    //8(%%edi),%%mm5\n" // mm5 = dst[1]
-            // diviser par 128
-          psrad mm1, 7          //$7,%%mm1\n" // mm1 = a*v/128|b*v/128 , 128 = SDL_MIX_MAXVOLUME
-          add esi, 16           //$16,%%esi\n"
-          psrad mm3, 7          //$7,%%mm3\n" // mm3 = c*v/128|d*v/128
-          psrad mm4, 7          //$7,%%mm4\n" // mm4 = e*v/128|f*v/128
-            // mm1 = le sample avec le volume modifie
-          packssdw mm3, mm1     //%%mm1,%%mm3\n" // mm3 = s(a*v|b*v|c*v|d*v)
-          psrad mm6, 7          //$7,%%mm6\n" // mm6= g*v/128|h*v/128
-          paddsw mm3, mm7       //%%mm7,%%mm3\n" // mm3 = adjust_volume(src)+dst
-            // mm4 = le sample avec le volume modifie
-          packssdw mm6, mm4     //%%mm4,%%mm6\n" // mm6 = s(e*v|f*v|g*v|h*v)
-          movq[edi], mm3        //%%mm3,(%%edi)\n"
-          paddsw mm6, mm5       //%%mm5,%%mm6\n" // mm6 = adjust_volume(src)+dst
-          movq[edi + 8], mm6    //%%mm6,8(%%edi)\n"
-          add edi, 16           //$16,%%edi\n"
-          dec ebx               //%%ebx\n"
-          jnz mixloopS16
-	ends16:
-		  emms
-          pop ebx
-		  pop esi
-		  pop edi
+    /* *INDENT-OFF* */
+	__asm
+	{
+
+		push	edi
+		push	esi
+		push	ebx
+		
+		mov		edi, dst		// edi = dst
+		mov		esi, src		// esi = src
+		mov		eax, volume		// eax = volume
+		mov		ebx, nSize		// ebx = size
+		shr		ebx, 4			// process 16 bytes per iteration = 8 samples
+		jz		endS16
+		
+		pxor	mm0, mm0
+		movd	mm0, eax		//%%eax,%%mm0
+		movq	mm1, mm0		//%%mm0,%%mm1
+		psllq	mm0, 16			//$16,%%mm0
+		por		mm0, mm1		//%%mm1,%%mm0
+		psllq	mm0, 16			//$16,%%mm0
+		por		mm0, mm1		//%%mm1,%%mm0
+		psllq	mm0, 16			//$16,%%mm0
+		por		mm0, mm1		//%%mm1,%%mm0			// mm0 = vol|vol|vol|vol
+
+		#ifndef __WATCOMC__
+		align	16
+		#endif
+mixloopS16:
+		movq	mm1, [esi]		//(%%esi),%%mm1\n" // mm1 = a|b|c|d
+		movq	mm2, mm1		//%%mm1,%%mm2\n" // mm2 = a|b|c|d
+		movq	mm4, [esi + 8]	//8(%%esi),%%mm4\n" // mm4 = e|f|g|h
+		// pre charger le buffer dst dans mm7
+		movq	mm7, [edi]		//(%%edi),%%mm7\n" // mm7 = dst[0]"
+		// multiplier par le volume
+		pmullw	mm1, mm0		//%%mm0,%%mm1\n" // mm1 = l(a*v)|l(b*v)|l(c*v)|l(d*v)
+		pmulhw	mm2, mm0		//%%mm0,%%mm2\n" // mm2 = h(a*v)|h(b*v)|h(c*v)|h(d*v)
+		movq	mm5, mm4		//%%mm4,%%mm5\n" // mm5 = e|f|g|h
+		pmullw	mm4, mm0		//%%mm0,%%mm4\n" // mm4 = l(e*v)|l(f*v)|l(g*v)|l(h*v)
+		pmulhw	mm5, mm0		//%%mm0,%%mm5\n" // mm5 = h(e*v)|h(f*v)|h(g*v)|h(h*v)
+		movq	mm3, mm1		//%%mm1,%%mm3\n" // mm3 = l(a*v)|l(b*v)|l(c*v)|l(d*v)
+		punpckhwd	mm1, mm2	//%%mm2,%%mm1\n" // mm1 = a*v|b*v
+		movq		mm6, mm4	//%%mm4,%%mm6\n" // mm6 = l(e*v)|l(f*v)|l(g*v)|l(h*v)
+		punpcklwd	mm3, mm2	//%%mm2,%%mm3\n" // mm3 = c*v|d*v
+		punpckhwd	mm4, mm5	//%%mm5,%%mm4\n" // mm4 = e*f|f*v
+		punpcklwd	mm6, mm5	//%%mm5,%%mm6\n" // mm6 = g*v|h*v
+		// pre charger le buffer dst dans mm5
+		movq	mm5, [edi + 8]	//8(%%edi),%%mm5\n" // mm5 = dst[1]
+		// diviser par 128
+		psrad	mm1, 7			//$7,%%mm1\n" // mm1 = a*v/128|b*v/128 , 128 = SDL_MIX_MAXVOLUME
+		add		esi, 16			//$16,%%esi\n"
+		psrad	mm3, 7			//$7,%%mm3\n" // mm3 = c*v/128|d*v/128
+		psrad	mm4, 7			//$7,%%mm4\n" // mm4 = e*v/128|f*v/128
+		// mm1 = le sample avec le volume modifie
+		packssdw	mm3, mm1	//%%mm1,%%mm3\n" // mm3 = s(a*v|b*v|c*v|d*v)
+		psrad	mm6, 7			//$7,%%mm6\n" // mm6= g*v/128|h*v/128
+		paddsw	mm3, mm7		//%%mm7,%%mm3\n" // mm3 = adjust_volume(src)+dst
+		// mm4 = le sample avec le volume modifie
+		packssdw	mm6, mm4	//%%mm4,%%mm6\n" // mm6 = s(e*v|f*v|g*v|h*v)
+		movq	[edi], mm3		//%%mm3,(%%edi)\n"
+		paddsw	mm6, mm5		//%%mm5,%%mm6\n" // mm6 = adjust_volume(src)+dst
+		movq	[edi + 8], mm6	//%%mm6,8(%%edi)\n"
+		add		edi, 16			//$16,%%edi\n"
+		dec		ebx				//%%ebx\n"
+		jnz mixloopS16
+
+ends16:
+		emms
+		
+		pop		ebx
+		pop		esi
+		pop		edi
 	}
-	/* *INDENT-ON* */
+    /* *INDENT-ON* */
 }
 
 ////////////////////////////////////////////////
@@ -116,59 +123,64 @@
 void
 SDL_MixAudio_MMX_S8_VC(char *dst, char *src, unsigned int nSize, int volume)
 {
-	/* *INDENT-OFF* */
-    _asm {
+    /* *INDENT-OFF* */
+	_asm
+	{
+
+		push	edi
+		push	esi
+		push	ebx
+		
+		mov		edi, dst	//movl	%0,%%edi	// edi = dst
+		mov		esi, src	//%1,%%esi	// esi = src
+		mov		eax, volume	//%3,%%eax	// eax = volume
+
+		movd	mm0, eax	//%%eax,%%mm0
+		movq	mm1, mm0	//%%mm0,%%mm1
+		psllq	mm0, 16		//$16,%%mm0
+		por		mm0, mm1	//%%mm1,%%mm0
+		psllq	mm0, 16		//$16,%%mm0
+		por		mm0, mm1	//%%mm1,%%mm0
+		psllq	mm0, 16		//$16,%%mm0
+		por		mm0, mm1	//%%mm1,%%mm0
+		
+		mov		ebx, nSize	//%2,%%ebx	// ebx = size
+		shr		ebx, 3		//$3,%%ebx	// process 8 bytes per iteration = 8 samples
+		cmp		ebx, 0		//$0,%%ebx
+		je		endS8
 
-          push edi
-          push esi
-		  push ebx
-		  mov edi, dst          //%0,%%edi      // edi = dst
-          mov esi, src          //%1,%%esi      // esi = src
-          mov eax, volume       //%3,%%eax      // eax = volume
-          movd mm0, eax         //%%eax,%%mm0
-          movq mm1, mm0         //%%mm0,%%mm1
-          psllq mm0, 16         //$16,%%mm0
-          por mm0, mm1          //%%mm1,%%mm0
-          psllq mm0, 16         //$16,%%mm0
-          por mm0, mm1          //%%mm1,%%mm0
-          psllq mm0, 16         //$16,%%mm0
-          por mm0, mm1          //%%mm1,%%mm0
-          mov ebx, nSize        //%2,%%ebx      // ebx = size
-          shr ebx, 3            //$3,%%ebx      // process 8 bytes per iteration = 8 samples
-          cmp ebx, 0            //$0,%%ebx
-          je endS8
-#ifndef __WATCOMC__
-          align 16
-#endif
-      mixloopS8:
-		  pxor mm2, mm2         //%%mm2,%%mm2           // mm2 = 0
-          movq mm1,[esi]        //(%%esi),%%mm1 // mm1 = a|b|c|d|e|f|g|h
-          movq mm3, mm1         //%%mm1,%%mm3   // mm3 = a|b|c|d|e|f|g|h
-            // on va faire le "sign extension" en faisant un cmp avec 0 qui retourne 1 si <0, 0 si >0
-          pcmpgtb mm2, mm1      //%%mm1,%%mm2   // mm2 = 11111111|00000000|00000000....
-          punpckhbw mm1, mm2    //%%mm2,%%mm1   // mm1 = 0|a|0|b|0|c|0|d
-          punpcklbw mm3, mm2    //%%mm2,%%mm3   // mm3 = 0|e|0|f|0|g|0|h
-          movq mm2,[edi]        //(%%edi),%%mm2 // mm2 = destination
-          pmullw mm1, mm0       //%%mm0,%%mm1   // mm1 = v*a|v*b|v*c|v*d
-          add esi, 8            //$8,%%esi
-          pmullw mm3, mm0       //%%mm0,%%mm3   // mm3 = v*e|v*f|v*g|v*h
-          psraw mm1, 7          //$7,%%mm1              // mm1 = v*a/128|v*b/128|v*c/128|v*d/128 
-          psraw mm3, 7          //$7,%%mm3              // mm3 = v*e/128|v*f/128|v*g/128|v*h/128
-          packsswb mm3, mm1     //%%mm1,%%mm3   // mm1 = v*a/128|v*b/128|v*c/128|v*d/128|v*e/128|v*f/128|v*g/128|v*h/128
-          paddsb mm3, mm2       //%%mm2,%%mm3   // add to destination buffer
-          movq[edi], mm3        //%%mm3,(%%edi) // store back to ram
-          add edi, 8            //$8,%%edi
-          dec ebx               //%%ebx
-          jnz mixloopS8
-      endS8:
-		  emms
-          pop ebx
-		  pop esi
-		  pop edi
+		#ifndef __WATCOMC__
+		align 16
+		#endif
+mixloopS8:
+		pxor	mm2, mm2	//%%mm2,%%mm2		// mm2 = 0
+		movq	mm1, [esi]	//(%%esi),%%mm1	// mm1 = a|b|c|d|e|f|g|h
+		movq	mm3, mm1	//%%mm1,%%mm3 	// mm3 = a|b|c|d|e|f|g|h
+		// on va faire le "sign extension" en faisant un cmp avec 0 qui retourne 1 si <0, 0 si >0
+		pcmpgtb		mm2, mm1	//%%mm1,%%mm2	// mm2 = 11111111|00000000|00000000....
+		punpckhbw	mm1, mm2	//%%mm2,%%mm1	// mm1 = 0|a|0|b|0|c|0|d
+		punpcklbw	mm3, mm2	//%%mm2,%%mm3	// mm3 = 0|e|0|f|0|g|0|h
+		movq	mm2, [edi]	//(%%edi),%%mm2	// mm2 = destination
+		pmullw	mm1, mm0	//%%mm0,%%mm1	// mm1 = v*a|v*b|v*c|v*d
+		add		esi, 8		//$8,%%esi
+		pmullw	mm3, mm0	//%%mm0,%%mm3	// mm3 = v*e|v*f|v*g|v*h
+		psraw	mm1, 7		//$7,%%mm1		// mm1 = v*a/128|v*b/128|v*c/128|v*d/128 
+		psraw	mm3, 7		//$7,%%mm3		// mm3 = v*e/128|v*f/128|v*g/128|v*h/128
+		packsswb mm3, mm1	//%%mm1,%%mm3	// mm1 = v*a/128|v*b/128|v*c/128|v*d/128|v*e/128|v*f/128|v*g/128|v*h/128
+		paddsb	mm3, mm2	//%%mm2,%%mm3	// add to destination buffer
+		movq	[edi], mm3	//%%mm3,(%%edi)	// store back to ram
+		add		edi, 8		//$8,%%edi
+		dec		ebx			//%%ebx
+		jnz		mixloopS8
+		
+endS8:
+		emms
+		
+		pop		ebx
+		pop		esi
+		pop		edi
 	}
-	/* *INDENT-ON* */
+    /* *INDENT-ON* */
 }
 
-#endif                          /* SDL_ASSEMBLY_ROUTINES */
-
-/* vi: set ts=4 sw=4 expandtab: */
+#endif /* SDL_ASSEMBLY_ROUTINES */