Mercurial > sdl-ios-xcode
comparison src/audio/SDL_mixer_MMX_VC.c @ 1720:a1ebb17f9c52 SDL-1.3
Cleaned up a bunch of warnings, started adding Win32 event support
author | Sam Lantinga <slouken@libsdl.org> |
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date | Fri, 30 Jun 2006 05:42:49 +0000 |
parents | 4da1ee79c9af |
children | 1cc762cafff8 |
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1719:5b9f50c957ed | 1720:a1ebb17f9c52 |
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38 //////////////////////////////////////////////// | 38 //////////////////////////////////////////////// |
39 | 39 |
40 void | 40 void |
41 SDL_MixAudio_MMX_S16_VC(char *dst, char *src, unsigned int nSize, int volume) | 41 SDL_MixAudio_MMX_S16_VC(char *dst, char *src, unsigned int nSize, int volume) |
42 { | 42 { |
43 /* *INDENT-OFF* */ | |
43 __asm { | 44 __asm { |
44 | 45 push edi |
45 push edi push esi push ebx mov edi, dst // edi = dst | 46 push esi |
47 push ebx | |
48 mov edi, dst // edi = dst | |
46 mov esi, src // esi = src | 49 mov esi, src // esi = src |
47 mov eax, volume // eax = volume | 50 mov eax, volume // eax = volume |
48 mov ebx, nSize // ebx = size | 51 mov ebx, nSize // ebx = size |
49 shr ebx, 4 // process 16 bytes per iteration = 8 samples | 52 shr ebx, 4 // process 16 bytes per iteration = 8 samples |
50 jz endS16 pxor mm0, mm0 movd mm0, eax //%%eax,%%mm0 | 53 jz endS16 |
54 pxor mm0, mm0 | |
55 movd mm0, eax //%%eax,%%mm0 | |
51 movq mm1, mm0 //%%mm0,%%mm1 | 56 movq mm1, mm0 //%%mm0,%%mm1 |
52 psllq mm0, 16 //$16,%%mm0 | 57 psllq mm0, 16 //$16,%%mm0 |
53 por mm0, mm1 //%%mm1,%%mm0 | 58 por mm0, mm1 //%%mm1,%%mm0 |
54 psllq mm0, 16 //$16,%%mm0 | 59 psllq mm0, 16 //$16,%%mm0 |
55 por mm0, mm1 //%%mm1,%%mm0 | 60 por mm0, mm1 //%%mm1,%%mm0 |
56 psllq mm0, 16 //$16,%%mm0 | 61 psllq mm0, 16 //$16,%%mm0 |
57 por mm0, mm1 //%%mm1,%%mm0 // mm0 = vol|vol|vol|vol | 62 por mm0, mm1 //%%mm1,%%mm0 // mm0 = vol|vol|vol|vol |
58 #ifndef __WATCOMC__ | 63 #ifndef __WATCOMC__ |
59 align 16 | 64 align 16 |
60 #endif | 65 #endif |
61 mixloopS16:movq mm1,[esi] //(%%esi),%%mm1\n" // mm1 = a|b|c|d | 66 mixloopS16: |
62 movq mm2, mm1 //%%mm1,%%mm2\n" // mm2 = a|b|c|d | 67 movq mm1,[esi] //(%%esi),%%mm1\n" // mm1 = a|b|c|d |
68 movq mm2, mm1 //%%mm1,%%mm2\n" // mm2 = a|b|c|d | |
63 movq mm4,[esi + 8] //8(%%esi),%%mm4\n" // mm4 = e|f|g|h | 69 movq mm4,[esi + 8] //8(%%esi),%%mm4\n" // mm4 = e|f|g|h |
64 // pre charger le buffer dst dans mm7 | 70 // pre charger le buffer dst dans mm7 |
65 movq mm7,[edi] //(%%edi),%%mm7\n" // mm7 = dst[0]" | 71 movq mm7,[edi] //(%%edi),%%mm7\n" // mm7 = dst[0]" |
66 // multiplier par le volume | 72 // multiplier par le volume |
67 pmullw mm1, mm0 //%%mm0,%%mm1\n" // mm1 = l(a*v)|l(b*v)|l(c*v)|l(d*v) | 73 pmullw mm1, mm0 //%%mm0,%%mm1\n" // mm1 = l(a*v)|l(b*v)|l(c*v)|l(d*v) |
68 pmulhw mm2, mm0 //%%mm0,%%mm2\n" // mm2 = h(a*v)|h(b*v)|h(c*v)|h(d*v) | 74 pmulhw mm2, mm0 //%%mm0,%%mm2\n" // mm2 = h(a*v)|h(b*v)|h(c*v)|h(d*v) |
69 movq mm5, mm4 //%%mm4,%%mm5\n" // mm5 = e|f|g|h | 75 movq mm5, mm4 //%%mm4,%%mm5\n" // mm5 = e|f|g|h |
70 pmullw mm4, mm0 //%%mm0,%%mm4\n" // mm4 = l(e*v)|l(f*v)|l(g*v)|l(h*v) | 76 pmullw mm4, mm0 //%%mm0,%%mm4\n" // mm4 = l(e*v)|l(f*v)|l(g*v)|l(h*v) |
71 pmulhw mm5, mm0 //%%mm0,%%mm5\n" // mm5 = h(e*v)|h(f*v)|h(g*v)|h(h*v) | 77 pmulhw mm5, mm0 //%%mm0,%%mm5\n" // mm5 = h(e*v)|h(f*v)|h(g*v)|h(h*v) |
72 movq mm3, mm1 //%%mm1,%%mm3\n" // mm3 = l(a*v)|l(b*v)|l(c*v)|l(d*v) | 78 movq mm3, mm1 //%%mm1,%%mm3\n" // mm3 = l(a*v)|l(b*v)|l(c*v)|l(d*v) |
76 punpckhwd mm4, mm5 //%%mm5,%%mm4\n" // mm4 = e*f|f*v | 82 punpckhwd mm4, mm5 //%%mm5,%%mm4\n" // mm4 = e*f|f*v |
77 punpcklwd mm6, mm5 //%%mm5,%%mm6\n" // mm6 = g*v|h*v | 83 punpcklwd mm6, mm5 //%%mm5,%%mm6\n" // mm6 = g*v|h*v |
78 // pre charger le buffer dst dans mm5 | 84 // pre charger le buffer dst dans mm5 |
79 movq mm5,[edi + 8] //8(%%edi),%%mm5\n" // mm5 = dst[1] | 85 movq mm5,[edi + 8] //8(%%edi),%%mm5\n" // mm5 = dst[1] |
80 // diviser par 128 | 86 // diviser par 128 |
81 psrad mm1, 7 //$7,%%mm1\n" // mm1 = a*v/128|b*v/128 , 128 = SDL_MIX_MAXVOLUME | 87 psrad mm1, 7 //$7,%%mm1\n" // mm1 = a*v/128|b*v/128 , 128 = SDL_MIX_MAXVOLUME |
82 add esi, 16 //$16,%%esi\n" | 88 add esi, 16 //$16,%%esi\n" |
83 psrad mm3, 7 //$7,%%mm3\n" // mm3 = c*v/128|d*v/128 | 89 psrad mm3, 7 //$7,%%mm3\n" // mm3 = c*v/128|d*v/128 |
84 psrad mm4, 7 //$7,%%mm4\n" // mm4 = e*v/128|f*v/128 | 90 psrad mm4, 7 //$7,%%mm4\n" // mm4 = e*v/128|f*v/128 |
85 // mm1 = le sample avec le volume modifie | 91 // mm1 = le sample avec le volume modifie |
86 packssdw mm3, mm1 //%%mm1,%%mm3\n" // mm3 = s(a*v|b*v|c*v|d*v) | 92 packssdw mm3, mm1 //%%mm1,%%mm3\n" // mm3 = s(a*v|b*v|c*v|d*v) |
91 movq[edi], mm3 //%%mm3,(%%edi)\n" | 97 movq[edi], mm3 //%%mm3,(%%edi)\n" |
92 paddsw mm6, mm5 //%%mm5,%%mm6\n" // mm6 = adjust_volume(src)+dst | 98 paddsw mm6, mm5 //%%mm5,%%mm6\n" // mm6 = adjust_volume(src)+dst |
93 movq[edi + 8], mm6 //%%mm6,8(%%edi)\n" | 99 movq[edi + 8], mm6 //%%mm6,8(%%edi)\n" |
94 add edi, 16 //$16,%%edi\n" | 100 add edi, 16 //$16,%%edi\n" |
95 dec ebx //%%ebx\n" | 101 dec ebx //%%ebx\n" |
96 jnz mixloopS16 ends16:emms pop ebx pop esi pop edi} | 102 jnz mixloopS16 |
97 | 103 ends16: |
104 emms | |
105 pop ebx | |
106 pop esi | |
107 pop edi | |
108 } | |
109 /* *INDENT-ON* */ | |
98 } | 110 } |
99 | 111 |
100 //////////////////////////////////////////////// | 112 //////////////////////////////////////////////// |
101 // Mixing for 8 bit signed buffers | 113 // Mixing for 8 bit signed buffers |
102 //////////////////////////////////////////////// | 114 //////////////////////////////////////////////// |
103 | 115 |
104 void | 116 void |
105 SDL_MixAudio_MMX_S8_VC(char *dst, char *src, unsigned int nSize, int volume) | 117 SDL_MixAudio_MMX_S8_VC(char *dst, char *src, unsigned int nSize, int volume) |
106 { | 118 { |
119 /* *INDENT-OFF* */ | |
107 _asm { | 120 _asm { |
108 | 121 |
109 push edi push esi push ebx mov edi, dst //movl %0,%%edi // edi = dst | 122 push edi |
123 push esi | |
124 push ebx | |
125 mov edi, dst //%0,%%edi // edi = dst | |
110 mov esi, src //%1,%%esi // esi = src | 126 mov esi, src //%1,%%esi // esi = src |
111 mov eax, volume //%3,%%eax // eax = volume | 127 mov eax, volume //%3,%%eax // eax = volume |
112 movd mm0, eax //%%eax,%%mm0 | 128 movd mm0, eax //%%eax,%%mm0 |
113 movq mm1, mm0 //%%mm0,%%mm1 | 129 movq mm1, mm0 //%%mm0,%%mm1 |
114 psllq mm0, 16 //$16,%%mm0 | 130 psllq mm0, 16 //$16,%%mm0 |
122 cmp ebx, 0 //$0,%%ebx | 138 cmp ebx, 0 //$0,%%ebx |
123 je endS8 | 139 je endS8 |
124 #ifndef __WATCOMC__ | 140 #ifndef __WATCOMC__ |
125 align 16 | 141 align 16 |
126 #endif | 142 #endif |
127 mixloopS8:pxor mm2, mm2 //%%mm2,%%mm2 // mm2 = 0 | 143 mixloopS8: |
144 pxor mm2, mm2 //%%mm2,%%mm2 // mm2 = 0 | |
128 movq mm1,[esi] //(%%esi),%%mm1 // mm1 = a|b|c|d|e|f|g|h | 145 movq mm1,[esi] //(%%esi),%%mm1 // mm1 = a|b|c|d|e|f|g|h |
129 movq mm3, mm1 //%%mm1,%%mm3 // mm3 = a|b|c|d|e|f|g|h | 146 movq mm3, mm1 //%%mm1,%%mm3 // mm3 = a|b|c|d|e|f|g|h |
130 // on va faire le "sign extension" en faisant un cmp avec 0 qui retourne 1 si <0, 0 si >0 | 147 // on va faire le "sign extension" en faisant un cmp avec 0 qui retourne 1 si <0, 0 si >0 |
131 pcmpgtb mm2, mm1 //%%mm1,%%mm2 // mm2 = 11111111|00000000|00000000.... | 148 pcmpgtb mm2, mm1 //%%mm1,%%mm2 // mm2 = 11111111|00000000|00000000.... |
132 punpckhbw mm1, mm2 //%%mm2,%%mm1 // mm1 = 0|a|0|b|0|c|0|d | 149 punpckhbw mm1, mm2 //%%mm2,%%mm1 // mm1 = 0|a|0|b|0|c|0|d |
133 punpcklbw mm3, mm2 //%%mm2,%%mm3 // mm3 = 0|e|0|f|0|g|0|h | 150 punpcklbw mm3, mm2 //%%mm2,%%mm3 // mm3 = 0|e|0|f|0|g|0|h |
134 movq mm2,[edi] //(%%edi),%%mm2 // mm2 = destination | 151 movq mm2,[edi] //(%%edi),%%mm2 // mm2 = destination |
135 pmullw mm1, mm0 //%%mm0,%%mm1 // mm1 = v*a|v*b|v*c|v*d | 152 pmullw mm1, mm0 //%%mm0,%%mm1 // mm1 = v*a|v*b|v*c|v*d |
136 add esi, 8 //$8,%%esi | 153 add esi, 8 //$8,%%esi |
137 pmullw mm3, mm0 //%%mm0,%%mm3 // mm3 = v*e|v*f|v*g|v*h | 154 pmullw mm3, mm0 //%%mm0,%%mm3 // mm3 = v*e|v*f|v*g|v*h |
138 psraw mm1, 7 //$7,%%mm1 // mm1 = v*a/128|v*b/128|v*c/128|v*d/128 | 155 psraw mm1, 7 //$7,%%mm1 // mm1 = v*a/128|v*b/128|v*c/128|v*d/128 |
139 psraw mm3, 7 //$7,%%mm3 // mm3 = v*e/128|v*f/128|v*g/128|v*h/128 | 156 psraw mm3, 7 //$7,%%mm3 // mm3 = v*e/128|v*f/128|v*g/128|v*h/128 |
140 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 | 157 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 |
141 paddsb mm3, mm2 //%%mm2,%%mm3 // add to destination buffer | 158 paddsb mm3, mm2 //%%mm2,%%mm3 // add to destination buffer |
142 movq[edi], mm3 //%%mm3,(%%edi) // store back to ram | 159 movq[edi], mm3 //%%mm3,(%%edi) // store back to ram |
143 add edi, 8 //$8,%%edi | 160 add edi, 8 //$8,%%edi |
144 dec ebx //%%ebx | 161 dec ebx //%%ebx |
145 jnz mixloopS8 endS8:emms pop ebx pop esi pop edi} | 162 jnz mixloopS8 |
163 endS8: | |
164 emms | |
165 pop ebx | |
166 pop esi | |
167 pop edi | |
168 } | |
169 /* *INDENT-ON* */ | |
146 } | 170 } |
147 | 171 |
148 #endif /* SDL_ASSEMBLY_ROUTINES */ | 172 #endif /* SDL_ASSEMBLY_ROUTINES */ |
173 | |
149 /* vi: set ts=4 sw=4 expandtab: */ | 174 /* vi: set ts=4 sw=4 expandtab: */ |