Mercurial > sdl-ios-xcode
diff src/audio/SDL_mixer_MMX_VC.c @ 1662:782fd950bd46 SDL-1.3
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
WARNING: None of the video drivers have been updated for the new API yet! The API is still under design and very fluid.
The code is now run through a consistent indent format:
indent -i4 -nut -nsc -br -ce
The headers are being converted to automatically generate doxygen documentation.
author | Sam Lantinga <slouken@libsdl.org> |
---|---|
date | Sun, 28 May 2006 13:04:16 +0000 |
parents | e3242177fe4a |
children | 4da1ee79c9af |
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--- a/src/audio/SDL_mixer_MMX_VC.c Sun May 21 17:27:13 2006 +0000 +++ b/src/audio/SDL_mixer_MMX_VC.c Sun May 28 13:04:16 2006 +0000 @@ -37,80 +37,63 @@ // Mixing for 16 bit signed buffers //////////////////////////////////////////////// -void SDL_MixAudio_MMX_S16_VC(char* dst,char* src,unsigned int nSize,int volume) +void +SDL_MixAudio_MMX_S16_VC (char *dst, char *src, unsigned int nSize, int volume) { - __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 + __asm { - #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 - } + 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} } @@ -118,64 +101,49 @@ // Mixing for 8 bit signed buffers //////////////////////////////////////////////// -void SDL_MixAudio_MMX_S8_VC(char* dst,char* src,unsigned int nSize,int volume) +void +SDL_MixAudio_MMX_S8_VC (char *dst, char *src, unsigned int nSize, int volume) { - _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 + _asm { - #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 - } + 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 +#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} } -#endif /* SDL_ASSEMBLY_ROUTINES */ +#endif /* SDL_ASSEMBLY_ROUTINES */ +/* vi: set ts=4 sw=4 expandtab: */