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annotate src/video/xbios/SDL_xbiosmodes.c @ 2072:4b3f98a9a2c1

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xbios: preliminary video mode init
author Patrice Mandin <patmandin@gmail.com>
date Mon, 13 Nov 2006 19:59:28 +0000
parents
children 790726541708
rev   line source
2072
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2006 Sam Lantinga
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4
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5 This library is free software; you can redistribute it and/or
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6 modify it under the terms of the GNU Lesser General Public
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7 License as published by the Free Software Foundation; either
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8 version 2.1 of the License, or (at your option) any later version.
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9
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10 This library is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 Lesser General Public License for more details.
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14
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15 You should have received a copy of the GNU Lesser General Public
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16 License along with this library; if not, write to the Free Software
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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18
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19 Sam Lantinga
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20 slouken@libsdl.org
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21 */
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22
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23 #include <mint/osbind.h>
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24 #include <mint/falcon.h>
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25
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26 #include "SDL_config.h"
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27 #include "SDL_xbios.h"
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28 #include "SDL_xbiosmodes.h"
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29
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30
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31 typedef struct {
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32 int width,height,bpp;
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33 int modecode;
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34 int doubleline;
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35 } xbios_mode_t;
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36
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37 static xbios_mode_t falcon_rgb_modes[]={
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38 {768, 480, 16, BPS16 | COL80 | OVERSCAN | VERTFLAG},
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39 {768, 240, 16, BPS16 | COL80 | OVERSCAN},
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40 {640, 400, 16, BPS16 | COL80 | VERTFLAG},
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41 {640, 200, 16, BPS16 | COL80},
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42 {384, 480, 16, BPS16 | OVERSCAN | VERTFLAG},
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43 {384, 240, 16, BPS16 | OVERSCAN},
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44 {320, 400, 16, BPS16 | VERTFLAG},
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45 {320, 200, 16, BPS16},
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46 {768, 480, 8, BPS8 | COL80 | OVERSCAN | VERTFLAG},
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47 {768, 240, 8, BPS8 | COL80 | OVERSCAN},
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48 {640, 400, 8, BPS8 | COL80 | VERTFLAG},
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49 {640, 200, 8, BPS8 | COL80},
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50 {384, 480, 8, BPS8 | OVERSCAN | VERTFLAG},
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51 {384, 240, 8, BPS8 | OVERSCAN},
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52 {320, 400, 8, BPS8 | VERTFLAG},
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53 {320, 200, 8, BPS8}
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54 };
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55
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56 static xbios_mode_t falcon_vga_modes[]={
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57 {320, 480, 16, BPS16 },
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58 {320, 240, 16, BPS16 | VERTFLAG},
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59 {640, 480, 8, BPS8 | COL80},
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60 {640, 240, 8, BPS8 | COL80 | VERTFLAG},
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61 {320, 480, 8, BPS8 },
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62 {320, 240, 8, BPS8 | VERTFLAG}
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63 };
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64
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65 static void
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66 SDL_XBIOS_AddMode(_THIS, int width, int height, int bpp, Uint16 modecode,
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67 SDL_bool doubleline)
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68 {
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69 SDL_VideoDisplay display;
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70 SDL_DisplayData *displaydata;
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71 SDL_DisplayMode mode;
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72 Uint32 Rmask, Gmask, Bmask, Amask;
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73 int orig_bpp;
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74
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75 Rmask = Gmask = Bmask = Amask = 0;
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76 if (bpp == 16) {
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77 Rmask = 31<<11;
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78 Gmask = 63<<5;
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79 Bmask = 31;
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80 }
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81 /* Memorize for c2p4 operation */
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82 orig_bpp = bpp;
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83 if (bpp == 4) {
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84 bpp = 8;
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85 }
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86
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87 mode.format = SDL_MasksToPixelFormatEnum(bpp, Rmask, Gmask, Bmask, Amask);
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88 mode.w = width;
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89 mode.h = height;
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90 mode.refresh_rate = 0;
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91 mode.driverdata = NULL;
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92
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93 displaydata = (SDL_DisplayData *) SDL_malloc(sizeof(*displaydata));
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94 if (!displaydata) {
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95 return;
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96 }
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97 displaydata->modecode = modecode;
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98 displaydata->doubleline = doubleline;
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99 displaydata->c2p4 = (orig_bpp == 4);
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100
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101 SDL_zero(display);
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102 display.desktop_mode = mode;
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103 display.current_mode = mode;
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104 display.driverdata = displaydata;
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105 SDL_AddVideoDisplay(&display);
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106 }
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107
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108 void
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109 SDL_XBIOS_InitModes(_THIS)
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110 {
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111 SDL_VideoData *data = (SDL_VideoData *) _this->driverdata;
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112
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113 switch (data->cookie_vdo >> 16) {
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114 case VDO_ST:
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115 case VDO_STE:
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116 {
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117 SDL_XBIOS_AddMode(_this, 320, 200, 4, ST_LOW >> 8, SDL_FALSE);
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118 }
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119 break;
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120 case VDO_TT:
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121 {
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122 SDL_XBIOS_AddMode(_this, 320, 480, 8, TT_LOW, SDL_FALSE);
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123 /* Software double-lined mode */
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124 SDL_XBIOS_AddMode(_this, 320, 240, 8, TT_LOW, SDL_TRUE);
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125 }
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126 break;
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127 case VDO_F30:
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128 {
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129 Uint16 modecodemask = VsetMode(-1) & (VGA | PAL);
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130 int i;
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131
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132 switch (VgetMonitor()) {
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133 case MONITOR_MONO:
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134 /* Not usable */
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135 break;
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136 case MONITOR_RGB:
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137 case MONITOR_TV:
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138 for (i=0; i<sizeof(falcon_rgb_modes)/sizeof(xbios_mode_t); i++) {
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139 SDL_XBIOS_AddMode(_this, falcon_rgb_modes[i].width,
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140 falcon_rgb_modes[i].height, falcon_rgb_modes[i].bpp,
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141 falcon_rgb_modes[i].modecode & modecodemask, SDL_FALSE);
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142 }
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143 break;
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144 case MONITOR_VGA:
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145 for (i=0; i<sizeof(falcon_vga_modes)/sizeof(xbios_mode_t); i++) {
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146 SDL_XBIOS_AddMode(_this, falcon_vga_modes[i].width,
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147 falcon_vga_modes[i].height, falcon_vga_modes[i].bpp,
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148 falcon_vga_modes[i].modecode & modecodemask, SDL_FALSE);
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149 }
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150 break;
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151 }
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152 }
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153 break;
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154 }
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155 }
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156
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157 void
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158 SDL_XBIOS_GetDisplayModes(_THIS)
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159 {
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160 SDL_DisplayData *data = (SDL_DisplayData *) SDL_CurrentDisplay.driverdata;
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161 SDL_DisplayMode mode;
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162 //SDL_AddDisplayMode(_this->current_display, &mode);
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163 }
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164
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165 int
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166 SDL_XBIOS_SetDisplayMode(_THIS, SDL_DisplayMode * mode)
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167 {
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168 //SDL_DisplayModeData *data = (SDL_DisplayModeData *) mode->driverdata;
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169 return -1;
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170 }
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171
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172 void
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173 SDL_XBIOS_QuitModes(_THIS)
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174 {
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175 }
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176
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177 /* vi: set ts=4 sw=4 expandtab: */