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annotate src/audio/SDL_mixer_MMX.c @ 1133:609c060fd2a2

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The MacOSX Carbon/Cocoa/X11 all in one library patch. Relevant emails: To: SDL Developers <sdl@libsdl.org> From: =?ISO-8859-1?Q?Anders_F_Bj=F6rklund?= <afb@algonet.se> Date: Mon, 30 May 2005 23:29:04 +0200 Subject: [SDL] Mac OS X Video Drivers [patch] I've updated/added the Carbon and X11 video drivers to the Mac OS X port of SDL 1.2 (the CVS version), and made the Cocoa driver and runtime *optional*. The default is still Cocoa, and the "Quartz" driver. But you can now also use "toolbox" for Carbon, and "x11" for running with Apple's (or other) X11 server: export SDL_VIDEODRIVER=x11 export SDL_VIDEO_GL_DRIVER=/usr/X11R6/lib/libGL.dylib It also checks if the frameworks are available, by a: #include <Carbon/Carbon.h> or #import <Cocoa/Cocoa.h> (this should make it configure on plain Darwin as well?) Here are the new configure targets: --enable-video-cocoa use Cocoa/Quartz video driver default=yes --enable-video-carbon use Carbon/QuickDraw video driver default=yes --enable-video-x11 use X11 video driver default=no ./configure --enable-video-cocoa --enable-video-carbon --enable-video-x11 \ --x-includes=/usr/X11R6/include --x-libraries=/usr/X11R6/lib The Carbon version is just an updated version of the old SDL driver for Mac OS 9, and could probably be improved... (but it does work, including the Carbon version of SDLmain) If you disable cocoa, you can run with -framework Carbon only, and the C version of SDL_main.c. And if you disable carbon too, you can still use the X11 version which doesn't require SDLmain. I updated the DrawSprocket version, but did not include it. (no blitters or VRAM GWorlds etc. available on OS X anyway) Besides for Mac OS 9, I don't think there's any use for it ? And note that any performance on Mac OS X equals OpenGL anyway... You can get "fair" software SDL results on captured CG displays, but for decent frame rates you need to be using GL for rendering. Finally, here is the patch itself: http://www.algonet.se/~afb/SDL-12CVS-macvideo.patch --anders PS. It says "video", but as usual it applies to mouse/keyboard too. ------ To: A list for developers using the SDL library <sdl@libsdl.org> From: =?ISO-8859-1?Q?Anders_F_Bj=F6rklund?= <afb@algonet.se> Date: Sun, 4 Sep 2005 10:02:15 +0200 Subject: [SDL] Updated Mac patch Updated the previous Mac patch to disable Carbon by default. Also "fixed" the SDL.spec again, so that it builds on Darwin. http://www.algonet.se/~afb/SDL-1.2.9-mac.patch Also applied fine to SDL12 CVS, when I tried it.
author Ryan C. Gordon <icculus@icculus.org>
date Thu, 08 Sep 2005 06:16:14 +0000
parents e3b3130f3af8
children b580f7201543
rev   line source
1019
e3b3130f3af8 Date: Fri, 31 Dec 2004 04:14:09 +0900
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1 /*
e3b3130f3af8 Date: Fri, 31 Dec 2004 04:14:09 +0900
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2 MMX assembler version of SDL_MixAudio for signed little endian 16 bit samples and signed 8 bit samples
e3b3130f3af8 Date: Fri, 31 Dec 2004 04:14:09 +0900
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3 Copyright 2002 Stephane Marchesin (stephane.marchesin@wanadoo.fr)
e3b3130f3af8 Date: Fri, 31 Dec 2004 04:14:09 +0900
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4 This code is licensed under the LGPL (see COPYING for details)
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5
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6 Assumes buffer size in bytes is a multiple of 16
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7 Assumes SDL_MIX_MAXVOLUME = 128
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8 */
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9
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11 /***********************************************
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12 * Mixing for 16 bit signed buffers
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13 ***********************************************/
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14
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15 #if defined(i386) && defined(__GNUC__) && defined(USE_ASMBLIT)
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16 void SDL_MixAudio_MMX_S16(char* dst,char* src,unsigned int size,int volume)
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17 {
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18 __asm__ __volatile__ (
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19
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20 " movl %3,%%eax\n" // eax = volume
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21
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22 " movl %2,%%edx\n" // edx = size
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23
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24 " shrl $4,%%edx\n" // process 16 bytes per iteration = 8 samples
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25
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26 " jz .endS16\n"
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27
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28 " pxor %%mm0,%%mm0\n"
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29
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30 " movd %%eax,%%mm0\n"
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31 " movq %%mm0,%%mm1\n"
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32 " psllq $16,%%mm0\n"
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33 " por %%mm1,%%mm0\n"
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34 " psllq $16,%%mm0\n"
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35 " por %%mm1,%%mm0\n"
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36 " psllq $16,%%mm0\n"
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37 " por %%mm1,%%mm0\n" // mm0 = vol|vol|vol|vol
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38
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39 ".align 16\n"
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40 " .mixloopS16:\n"
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41
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42 " movq (%1),%%mm1\n" // mm1 = a|b|c|d
539
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43
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44 " movq %%mm1,%%mm2\n" // mm2 = a|b|c|d
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45
887
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46 " movq 8(%1),%%mm4\n" // mm4 = e|f|g|h
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47
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48 // pré charger le buffer dst dans mm7
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49 " movq (%0),%%mm7\n" // mm7 = dst[0]"
539
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50
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51 // multiplier par le volume
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52 " pmullw %%mm0,%%mm1\n" // mm1 = l(a*v)|l(b*v)|l(c*v)|l(d*v)
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53
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54 " pmulhw %%mm0,%%mm2\n" // mm2 = h(a*v)|h(b*v)|h(c*v)|h(d*v)
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55 " movq %%mm4,%%mm5\n" // mm5 = e|f|g|h
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56
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57 " pmullw %%mm0,%%mm4\n" // mm4 = l(e*v)|l(f*v)|l(g*v)|l(h*v)
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58
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59 " pmulhw %%mm0,%%mm5\n" // mm5 = h(e*v)|h(f*v)|h(g*v)|h(h*v)
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60 " movq %%mm1,%%mm3\n" // mm3 = l(a*v)|l(b*v)|l(c*v)|l(d*v)
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61
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62 " punpckhwd %%mm2,%%mm1\n" // mm1 = a*v|b*v
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63
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64 " movq %%mm4,%%mm6\n" // mm6 = l(e*v)|l(f*v)|l(g*v)|l(h*v)
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65 " punpcklwd %%mm2,%%mm3\n" // mm3 = c*v|d*v
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66
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67 " punpckhwd %%mm5,%%mm4\n" // mm4 = e*f|f*v
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68
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69 " punpcklwd %%mm5,%%mm6\n" // mm6 = g*v|h*v
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70
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71 // pré charger le buffer dst dans mm5
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72 " movq 8(%0),%%mm5\n" // mm5 = dst[1]
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73
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74 // diviser par 128
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75 " psrad $7,%%mm1\n" // mm1 = a*v/128|b*v/128 , 128 = SDL_MIX_MAXVOLUME
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76 " add $16,%1\n"
539
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77
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78 " psrad $7,%%mm3\n" // mm3 = c*v/128|d*v/128
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79
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80 " psrad $7,%%mm4\n" // mm4 = e*v/128|f*v/128
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81
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82 // mm1 = le sample avec le volume modifié
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83 " packssdw %%mm1,%%mm3\n" // mm3 = s(a*v|b*v|c*v|d*v)
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84
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85 " psrad $7,%%mm6\n" // mm6= g*v/128|h*v/128
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86 " paddsw %%mm7,%%mm3\n" // mm3 = adjust_volume(src)+dst
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87
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88 // mm4 = le sample avec le volume modifié
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89 " packssdw %%mm4,%%mm6\n" // mm6 = s(e*v|f*v|g*v|h*v)
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90 " movq %%mm3,(%0)\n"
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91
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92 " paddsw %%mm5,%%mm6\n" // mm6 = adjust_volume(src)+dst
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93
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94 " movq %%mm6,8(%0)\n"
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95
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96 " add $16,%0\n"
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98 " dec %%edx\n"
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99
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100 " jnz .mixloopS16\n"
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101
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102 " emms\n"
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103
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104 ".endS16:\n"
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105 :
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106 : "r" (dst), "r"(src),"m"(size),
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107 "m"(volume)
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108 : "eax","edx","memory"
539
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109 );
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110 }
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111
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112
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113
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114 ////////////////////////////////////////////////
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115 // Mixing for 8 bit signed buffers
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116 ////////////////////////////////////////////////
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117
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118 void SDL_MixAudio_MMX_S8(char* dst,char* src,unsigned int size,int volume)
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119 {
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120 __asm__ __volatile__ (
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121
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122 " movl %3,%%eax\n" // eax = volume
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123
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124 " movd %%edx,%%mm0\n"
539
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125 " movq %%mm0,%%mm1\n"
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126 " psllq $16,%%mm0\n"
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127 " por %%mm1,%%mm0\n"
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128 " psllq $16,%%mm0\n"
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129 " por %%mm1,%%mm0\n"
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130 " psllq $16,%%mm0\n"
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131 " por %%mm1,%%mm0\n"
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132
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133 " movl %2,%%edx\n" // edx = size
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134 " shr $3,%%edx\n" // process 8 bytes per iteration = 8 samples
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135
887
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136 " cmp $0,%%edx\n"
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137 " je .endS8\n"
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138
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139 ".align 16\n"
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140 " .mixloopS8:\n"
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141
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142 " pxor %%mm2,%%mm2\n" // mm2 = 0
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143 " movq (%1),%%mm1\n" // mm1 = a|b|c|d|e|f|g|h
539
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144
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145 " movq %%mm1,%%mm3\n" // mm3 = a|b|c|d|e|f|g|h
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146
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147 // on va faire le "sign extension" en faisant un cmp avec 0 qui retourne 1 si <0, 0 si >0
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148 " pcmpgtb %%mm1,%%mm2\n" // mm2 = 11111111|00000000|00000000....
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149
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150 " punpckhbw %%mm2,%%mm1\n" // mm1 = 0|a|0|b|0|c|0|d
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151
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152 " punpcklbw %%mm2,%%mm3\n" // mm3 = 0|e|0|f|0|g|0|h
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153 " movq (%0),%%mm2\n" // mm2 = destination
539
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154
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155 " pmullw %%mm0,%%mm1\n" // mm1 = v*a|v*b|v*c|v*d
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156 " add $8,%1\n"
539
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157
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158 " pmullw %%mm0,%%mm3\n" // mm3 = v*e|v*f|v*g|v*h
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159 " psraw $7,%%mm1\n" // mm1 = v*a/128|v*b/128|v*c/128|v*d/128
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160
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161 " psraw $7,%%mm3\n" // mm3 = v*e/128|v*f/128|v*g/128|v*h/128
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162
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163 " packsswb %%mm1,%%mm3\n" // 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
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164
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165 " paddsb %%mm2,%%mm3\n" // add to destination buffer
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166
887
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167 " movq %%mm3,(%0)\n" // store back to ram
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168 " add $8,%0\n"
539
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169
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170 " dec %%edx\n"
539
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171
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172 " jnz .mixloopS8\n"
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173
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174 ".endS8:\n"
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175 " emms\n"
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176 :
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177 : "r" (dst), "r"(src),"m"(size),
539
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178 "m"(volume)
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179 : "eax","edx","memory"
539
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180 );
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181 }
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182 #endif
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183