annotate src/video/ggi/SDL_ggivideo.c @ 288:2f5a6062db86

Updated for Watcom C++ and LCC compilers
author Sam Lantinga <slouken@libsdl.org>
date Thu, 28 Feb 2002 00:28:26 +0000
parents e8157fcb3114
children f6ffac90895c
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, 1998, 1999, 2000, 2001 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 Library General Public
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7 License as published by the Free Software Foundation; either
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8 version 2 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 Library 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 Library General Public
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16 License along with this library; if not, write to the Free
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17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 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 #ifdef SAVE_RCSID
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24 static char rcsid =
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25 "@(#) $Id$";
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26 #endif
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27
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28 /* GGI-based SDL video driver implementation.
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29 */
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30
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31 #include <stdlib.h>
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32 #include <stdio.h>
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33 #include <fcntl.h>
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34 #include <unistd.h>
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35 #include <sys/mman.h>
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36
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37 #include <ggi/ggi.h>
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38 #include <ggi/gii.h>
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39
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40 #include "SDL.h"
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41 #include "SDL_error.h"
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42 #include "SDL_video.h"
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43 #include "SDL_mouse.h"
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44 #include "SDL_sysvideo.h"
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45 #include "SDL_pixels_c.h"
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46 #include "SDL_events_c.h"
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47 #include "SDL_ggivideo.h"
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48 #include "SDL_ggimouse_c.h"
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49 #include "SDL_ggievents_c.h"
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50
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51
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52 struct private_hwdata
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53 {
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54 ggi_visual_t vis;
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55 };
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56
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57 ggi_visual_t VIS;
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58
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59 /* Initialization/Query functions */
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60 static int GGI_VideoInit(_THIS, SDL_PixelFormat *vformat);
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61 static SDL_Rect **GGI_ListModes(_THIS, SDL_PixelFormat *format, Uint32 flags);
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62 static SDL_Surface *GGI_SetVideoMode(_THIS, SDL_Surface *current, int width, int height, int bpp, Uint32 flags);
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63 static int GGI_SetColors(_THIS, int firstcolor, int ncolors,
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64 SDL_Color *colors);
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65 static void GGI_VideoQuit(_THIS);
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66
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67 /* Hardware surface functions */
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68 static int GGI_AllocHWSurface(_THIS, SDL_Surface *surface);
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69 static int GGI_LockHWSurface(_THIS, SDL_Surface *surface);
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70 static void GGI_UnlockHWSurface(_THIS, SDL_Surface *surface);
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71 static void GGI_FreeHWSurface(_THIS, SDL_Surface *surface);
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72
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73 /* GGI driver bootstrap functions */
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74
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75 static int GGI_Available(void)
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76 {
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77 ggi_visual_t *vis;
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78
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79 vis = NULL;
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80 if (ggiInit() == 0) {
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81 vis = ggiOpen(NULL);
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82 if (vis != NULL) {
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83 ggiClose(vis);
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84 }
0
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85 }
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86 return (vis != NULL);
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87 }
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88
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89 static void GGI_DeleteDevice(SDL_VideoDevice *device)
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90 {
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91 free(device->hidden);
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92 free(device);
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93 }
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94
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95 static SDL_VideoDevice *GGI_CreateDevice(int devindex)
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96 {
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97 SDL_VideoDevice *device;
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98
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99 /* Initialize all variables that we clean on shutdown */
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100 device = (SDL_VideoDevice *)malloc(sizeof(SDL_VideoDevice));
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101 if ( device ) {
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102 memset(device, 0, (sizeof *device));
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103 device->hidden = (struct SDL_PrivateVideoData *)
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104 malloc((sizeof *device->hidden));
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105 }
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106 if ( (device == NULL) || (device->hidden == NULL) ) {
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107 SDL_OutOfMemory();
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108 if ( device ) {
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109 free(device);
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110 }
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111 return(0);
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112 }
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113 memset(device->hidden, 0, (sizeof *device->hidden));
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114
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115 /* Set the function pointers */
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116 device->VideoInit = GGI_VideoInit;
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117 device->ListModes = GGI_ListModes;
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118 device->SetVideoMode = GGI_SetVideoMode;
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119 device->SetColors = GGI_SetColors;
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120 device->UpdateRects = NULL;
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121 device->VideoQuit = GGI_VideoQuit;
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122 device->AllocHWSurface = GGI_AllocHWSurface;
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123 device->CheckHWBlit = NULL;
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124 device->FillHWRect = NULL;
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125 device->SetHWColorKey = NULL;
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126 device->SetHWAlpha = NULL;
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127 device->LockHWSurface = GGI_LockHWSurface;
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128 device->UnlockHWSurface = GGI_UnlockHWSurface;
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129 device->FlipHWSurface = NULL;
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130 device->FreeHWSurface = GGI_FreeHWSurface;
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131 device->SetCaption = NULL;
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132 device->SetIcon = NULL;
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133 device->IconifyWindow = NULL;
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134 device->GrabInput = NULL;
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135 device->GetWMInfo = NULL;
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136 device->InitOSKeymap = GGI_InitOSKeymap;
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137 device->PumpEvents = GGI_PumpEvents;
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138
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139 device->free = GGI_DeleteDevice;
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140
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141 return device;
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142 }
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143
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144 VideoBootStrap GGI_bootstrap = {
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145 "ggi", "General Graphics Interface (GGI)",
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146 GGI_Available, GGI_CreateDevice
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147 };
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148
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149
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150 static SDL_Rect video_mode;
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151 static SDL_Rect *SDL_modelist[4] = { NULL, NULL, NULL, NULL };
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152
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153 int GGI_VideoInit(_THIS, SDL_PixelFormat *vformat)
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154 {
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155 ggi_mode mode =
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156 {
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157 1,
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158 { GGI_AUTO, GGI_AUTO },
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159 { GGI_AUTO, GGI_AUTO },
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160 { 0, 0 },
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161 GT_AUTO,
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162 { GGI_AUTO, GGI_AUTO }
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163 };
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164 struct private_hwdata *priv;
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165 ggi_color pal[256], map[256];
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166 const ggi_directbuffer *db;
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167 int err, num_bufs;
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168 ggi_pixel white, black;
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169
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170 priv = malloc(sizeof(struct private_hwdata));
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171 if (priv == NULL)
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172 {
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173 SDL_SetError("Unhandled GGI mode type!\n");
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174 GGI_VideoQuit(NULL);
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parents:
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175 }
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parents:
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176
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parents:
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177 if (ggiInit() != 0)
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178 {
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179 SDL_SetError("Unable to initialize GGI!\n");
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180 GGI_VideoQuit(NULL);
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181 }
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182
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183 VIS = ggiOpen(NULL);
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184 if (VIS == NULL)
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185 {
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186 SDL_SetError("Unable to open default GGI visual!\n");
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187 ggiExit();
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188 GGI_VideoQuit(NULL);
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189 }
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190
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191 ggiSetFlags(VIS, GGIFLAG_ASYNC);
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192
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193 /* Validate mode, autodetecting any GGI_AUTO or GT_AUTO fields */
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194 ggiCheckMode(VIS, &mode);
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195
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196 /* At this point we should have a valid mode - try to set it */
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197 err = ggiSetMode(VIS, &mode);
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198
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199 /* If we couldn't set _any_ modes, something is very wrong */
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200 if (err)
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201 {
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202 SDL_SetError("Can't set a mode!\n");
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203 ggiClose(VIS);
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204 ggiExit();
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205 GGI_VideoQuit(NULL);
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206 }
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207
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208 /* Set a palette for palletized modes */
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209 if (GT_SCHEME(mode.graphtype) == GT_PALETTE)
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210 {
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211 ggiSetColorfulPalette(VIS);
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212 ggiGetPalette(VIS, 0, 1 << vformat->BitsPerPixel, pal);
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213 }
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214
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215 /* Now we try to get the DirectBuffer info, which determines whether
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216 * SDL can access hardware surfaces directly. */
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217
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218 num_bufs = ggiDBGetNumBuffers(VIS);
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219
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220 if (num_bufs > 0)
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221 {
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222 db = ggiDBGetBuffer(VIS, 0); /* Only handle one DB for now */
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223
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224 vformat->BitsPerPixel = db->buffer.plb.pixelformat->depth;
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225
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226 vformat->Rmask = db->buffer.plb.pixelformat->red_mask;
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227 vformat->Gmask = db->buffer.plb.pixelformat->green_mask;
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228 vformat->Bmask = db->buffer.plb.pixelformat->blue_mask;
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diff changeset
229
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parents:
diff changeset
230 /* Fill in our hardware acceleration capabilities */
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parents:
diff changeset
231
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232 this->info.wm_available = 0;
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diff changeset
233 this->info.hw_available = 1;
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diff changeset
234 this->info.video_mem = db->buffer.plb.stride * mode.virt.y;
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parents:
diff changeset
235 }
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parents:
diff changeset
236
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diff changeset
237 video_mode.x = 0;
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diff changeset
238 video_mode.y = 0;
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diff changeset
239 video_mode.w = mode.virt.x;
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240 video_mode.h = mode.virt.y;
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241 SDL_modelist[((vformat->BitsPerPixel + 7) / 8) - 1] = &video_mode;
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parents:
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242
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parents:
diff changeset
243 /* We're done! */
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parents:
diff changeset
244 return(0);
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parents:
diff changeset
245 }
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parents:
diff changeset
246
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diff changeset
247 static SDL_Rect **GGI_ListModes(_THIS, SDL_PixelFormat *format, Uint32 flags)
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diff changeset
248 {
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diff changeset
249 return(&SDL_modelist[((format->BitsPerPixel + 7) / 8) - 1]);
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parents:
diff changeset
250 }
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diff changeset
251
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parents:
diff changeset
252 /* Various screen update functions available */
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parents:
diff changeset
253 static void GGI_DirectUpdate(_THIS, int numrects, SDL_Rect *rects);
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diff changeset
254
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diff changeset
255 SDL_Surface *GGI_SetVideoMode(_THIS, SDL_Surface *current, int width, int height, int bpp, Uint32 flags)
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parents:
diff changeset
256 {
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parents:
diff changeset
257 ggi_mode mode =
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parents:
diff changeset
258 {
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diff changeset
259 1,
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parents:
diff changeset
260 { GGI_AUTO, GGI_AUTO },
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parents:
diff changeset
261 { GGI_AUTO, GGI_AUTO },
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parents:
diff changeset
262 { 0, 0 },
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parents:
diff changeset
263 GT_AUTO,
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parents:
diff changeset
264 { GGI_AUTO, GGI_AUTO }
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parents:
diff changeset
265 };
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parents:
diff changeset
266 const ggi_directbuffer *db;
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parents:
diff changeset
267 ggi_color pal[256];
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parents:
diff changeset
268 int err;
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parents:
diff changeset
269
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diff changeset
270 fprintf(stderr, "GGI_SetVideoMode()\n");
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parents:
diff changeset
271
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diff changeset
272 mode.visible.x = mode.virt.x = width;
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diff changeset
273 mode.visible.y = mode.virt.y = height;
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parents:
diff changeset
274
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parents:
diff changeset
275 /* Translate requested SDL bit depth into a GGI mode */
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parents:
diff changeset
276 switch (bpp)
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parents:
diff changeset
277 {
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parents:
diff changeset
278 case 1: mode.graphtype = GT_1BIT; break;
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parents:
diff changeset
279 case 2: mode.graphtype = GT_2BIT; break;
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parents:
diff changeset
280 case 4: mode.graphtype = GT_4BIT; break;
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
281 case 8: mode.graphtype = GT_8BIT; break;
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
282 case 15: mode.graphtype = GT_15BIT; break;
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
283 case 16: mode.graphtype = GT_16BIT; break;
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
284 case 24: mode.graphtype = GT_24BIT; break;
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
285 case 32: mode.graphtype = GT_32BIT; break;
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
286 default:
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
287 SDL_SetError("Unknown SDL bit depth, using GT_AUTO....\n");
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parents:
diff changeset
288 mode.graphtype = GT_AUTO;
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
289 }
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
290
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
291 /* Validate mode, autodetecting any GGI_AUTO or GT_AUTO fields */
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parents:
diff changeset
292 ggiCheckMode(VIS, &mode);
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
293
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parents:
diff changeset
294 /* At this point we should have a valid mode - try to set it */
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parents:
diff changeset
295 err = ggiSetMode(VIS, &mode);
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
296
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parents:
diff changeset
297 /* If we couldn't set _any_ modes, something is very wrong */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
298 if (err)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
299 {
74212992fb08 Initial revision
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parents:
diff changeset
300 SDL_SetError("Can't set a mode!\n");
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
301 ggiClose(VIS);
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
302 ggiExit();
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
303 GGI_VideoQuit(NULL);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
304 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
305
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
306 /* Set a palette for palletized modes */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
307 if (GT_SCHEME(mode.graphtype) == GT_PALETTE)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
308 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
309 ggiSetColorfulPalette(VIS);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
310 ggiGetPalette(VIS, 0, 1 << bpp, pal);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
311 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
312
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
313 db = ggiDBGetBuffer(VIS, 0);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
314
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
315 /* Set up the new mode framebuffer */
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
316 current->flags = (SDL_FULLSCREEN | SDL_HWSURFACE);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
317 current->w = mode.virt.x;
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
318 current->h = mode.virt.y;
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
319 current->pitch = db->buffer.plb.stride;
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
320 current->pixels = db->read;
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
321
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
322 /* Set the blit function */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
323 this->UpdateRects = GGI_DirectUpdate;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
324
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
325 /* We're done */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
326 return(current);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
327 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
328
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
329 static int GGI_AllocHWSurface(_THIS, SDL_Surface *surface)
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
330 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
331 return(-1);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
332 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
333 static void GGI_FreeHWSurface(_THIS, SDL_Surface *surface)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
334 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
335 return;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
336 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
337 static int GGI_LockHWSurface(_THIS, SDL_Surface *surface)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
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338 {
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339 return(0);
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340 }
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341 static void GGI_UnlockHWSurface(_THIS, SDL_Surface *surface)
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342 {
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343 return;
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344 }
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345
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346 static void GGI_DirectUpdate(_THIS, int numrects, SDL_Rect *rects)
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347 {
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348 int i;
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349
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350 /* ggiFlush(VIS); */
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351
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352 for (i = 0; i < numrects; i++)
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353 {
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354 ggiFlushRegion(VIS, rects[i].x, rects[i].y, rects[i].w, rects[i].h);
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355 }
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356 return;
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357 }
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358
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359 int GGI_SetColors(_THIS, int firstcolor, int ncolors, SDL_Color *colors)
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360 {
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361 int i;
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362 ggi_color pal[256];
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363
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364 /* Set up the colormap */
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365 for (i = 0; i < ncolors; i++)
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366 {
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367 pal[i].r = (colors[i].r << 8) | colors[i].r;
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368 pal[i].g = (colors[i].g << 8) | colors[i].g;
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369 pal[i].b = (colors[i].b << 8) | colors[i].b;
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370 }
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371
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372 ggiSetPalette(VIS, firstcolor, ncolors, pal);
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373
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374 return 1;
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375 }
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376
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377 void GGI_VideoQuit(_THIS)
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378 {
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379 }
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380 void GGI_FinalQuit(void)
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381 {
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382 }