annotate src/video/xbios/SDL_xbios.c @ 2993:2fad80c77c17

Technically more correct
author Sam Lantinga <slouken@libsdl.org>
date Sun, 04 Jan 2009 19:26:50 +0000
parents 99210400e8b9
children
rev   line source
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2009 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 #include "SDL_config.h"
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23
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24 /*
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25 * Xbios SDL video driver
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26 *
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27 * Patrice Mandin
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28 */
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29
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30 #include <sys/stat.h>
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31 #include <unistd.h>
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32
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33 /* Mint includes */
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34 #include <mint/cookie.h>
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35 #include <mint/osbind.h>
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36 #include <mint/falcon.h>
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37
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38 #include "SDL_video.h"
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39 #include "SDL_mouse.h"
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40 #include "../SDL_sysvideo.h"
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41 #include "../SDL_pixels_c.h"
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42 #include "../../events/SDL_events_c.h"
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43
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44 #include "../ataricommon/SDL_ataric2p_s.h"
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45 #include "../ataricommon/SDL_atarievents_c.h"
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46 #include "../ataricommon/SDL_atarimxalloc_c.h"
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47 #include "../ataricommon/SDL_atarigl_c.h"
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48 #include "SDL_xbios.h"
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49 #include "SDL_xbiosmodes.h"
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50
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51 /* Debug print info */
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52 #if 0
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53 #define DEBUG_PRINT(what) \
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54 { \
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55 printf what; \
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56 }
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57 #define DEBUG_VIDEO_XBIOS 1
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58 #else
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59 #define DEBUG_PRINT(what)
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60 #undef DEBUG_VIDEO_XBIOS
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61 #endif
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62
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63 /* Initialization/Query functions */
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64 static int XBIOS_VideoInit(_THIS);
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65 static void XBIOS_VideoQuit(_THIS);
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66
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67 /* Xbios driver bootstrap functions */
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68
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69 static int
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70 XBIOS_Available(void)
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71 {
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72 unsigned long cookie_vdo, cookie_mil, cookie_hade, cookie_scpn;
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73
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74 /* Milan/Hades Atari clones do not have an Atari video chip */
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75 if ((Getcookie(C__MIL, &cookie_mil) == C_FOUND) ||
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76 (Getcookie(C_hade, &cookie_hade) == C_FOUND)) {
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77 return 0;
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78 }
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79
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80 /* Cookie _VDO present ? if not, assume ST machine */
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81 if (Getcookie(C__VDO, &cookie_vdo) != C_FOUND) {
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82 cookie_vdo = VDO_ST << 16;
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83 }
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84
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85 /* Test if we have a monochrome monitor plugged in */
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86 switch (cookie_vdo >> 16) {
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87 case VDO_ST:
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88 case VDO_STE:
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89 if (Getrez() == (ST_HIGH >> 8))
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90 return 0;
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91 break;
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92 case VDO_TT:
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93 if ((EgetShift() & ES_MODE) == TT_HIGH)
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94 return 0;
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95 break;
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96 case VDO_F30:
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97 if (VgetMonitor() == MONITOR_MONO)
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98 return 0;
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99 /*if (Getcookie(C_SCPN, &cookie_scpn) == C_FOUND) {
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100 if (!SDL_XBIOS_SB3Usable((scpn_cookie_t *) cookie_scpn)) {
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101 return 0;
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102 }
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103 } */
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104 break;
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105 default:
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106 return 0;
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107 }
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108
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109 return 1;
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110 }
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111
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112 static void
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113 XBIOS_DeleteDevice(SDL_VideoDevice * device)
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114 {
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115 SDL_free(device->driverdata);
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116 SDL_free(device);
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117 }
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118
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119 static SDL_VideoDevice *
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120 XBIOS_CreateDevice(int devindex)
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121 {
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122 SDL_VideoDevice *device;
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123 SDL_VideoData *data;
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124
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125 /* Initialize all variables that we clean on shutdown */
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126 device = (SDL_VideoDevice *) SDL_calloc(1, sizeof(SDL_VideoDevice));
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127 if (device) {
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128 data = (struct SDL_VideoData *) SDL_calloc(1, sizeof(SDL_VideoData));
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129 }
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130 if (!device || !data) {
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131 SDL_OutOfMemory();
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132 if (device) {
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133 SDL_free(device);
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134 }
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135 return NULL;
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136 }
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137 device->driverdata = data;
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138
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139 /* Video functions */
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140 device->VideoInit = XBIOS_VideoInit;
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141 device->VideoQuit = XBIOS_VideoQuit;
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142
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143 /* Modes */
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144 device->GetDisplayModes = SDL_XBIOS_GetDisplayModes;
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145 device->SetDisplayMode = SDL_XBIOS_SetDisplayMode;
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146
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147 /* Events */
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148 device->PumpEvents = SDL_Atari_PumpEvents;
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149
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150 #if SDL_VIDEO_OPENGL
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151 /* OpenGL functions */
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152 device->GL_LoadLibrary = SDL_AtariGL_LoadLibrary;
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153 device->GL_GetProcAddress = SDL_AtariGL_GetProcAddress;
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154 device->GL_CreateContext = NULL;
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155 device->GL_MakeCurrent = SDL_AtariGL_MakeCurrent;
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156 device->GL_SetSwapInterval = NULL;
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157 device->GL_GetSwapInterval = NULL;
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158 device->GL_SwapWindow = XBIOS_GL_SwapBuffers;
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159 device->GL_DeleteContext = NULL;
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160 #endif
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161
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162 device->free = XBIOS_DeleteDevice;
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163
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164 return device;
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165 }
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166
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167 VideoBootStrap XBIOS_bootstrap = {
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168 "xbios", "Atari Xbios driver",
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169 XBIOS_Available, XBIOS_CreateDevice
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170 };
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171
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172 static int
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173 XBIOS_VideoInit(_THIS)
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174 {
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175 /* Save screensaver settings */
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176
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177 /* Init video mode list, save current video mode settings */
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178 SDL_XBIOS_InitModes(_this);
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179
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180 return (0);
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181 }
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182
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183 static void
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184 XBIOS_VideoQuit(_THIS)
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185 {
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186 Atari_ShutdownEvents();
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187
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188 /* Restore screensaver settings */
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189
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190 /* Restore previous video mode settings */
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191 SDL_XBIOS_QuitModes(_this);
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192 }