annotate src/video/ggi/SDL_ggivideo.c @ 4070:b8f2db95145e SDL-1.2

Patch from Christian Walther Yes, the idea to use a cursor rectangle instead of [NSCursor set] has occurred to me too, and it does seem to be the most elegant way. Here's my attempt at an implementation
author Sam Lantinga <slouken@libsdl.org>
date Sun, 15 Jul 2007 15:58:00 +0000
parents 8d9bb0cf2c2a
children 782fd950bd46 c121d94672cb a1b03ba2fcd0
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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 #include "SDL_config.h"
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23
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24 /* GGI-based SDL video driver implementation.
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25 */
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26
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27 #include <fcntl.h>
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28 #include <unistd.h>
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29 #include <sys/mman.h>
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30
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31 #include <ggi/ggi.h>
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32 #include <ggi/gii.h>
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33
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34 #include "SDL_video.h"
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35 #include "SDL_mouse.h"
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36 #include "../SDL_sysvideo.h"
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37 #include "../SDL_pixels_c.h"
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38 #include "../../events/SDL_events_c.h"
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39 #include "SDL_ggivideo.h"
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40 #include "SDL_ggimouse_c.h"
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41 #include "SDL_ggievents_c.h"
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42
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43
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44 struct private_hwdata
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45 {
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46 ggi_visual_t vis;
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47 };
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48
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49 ggi_visual_t VIS;
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50
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51 /* Initialization/Query functions */
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52 static int GGI_VideoInit(_THIS, SDL_PixelFormat *vformat);
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53 static SDL_Rect **GGI_ListModes(_THIS, SDL_PixelFormat *format, Uint32 flags);
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54 static SDL_Surface *GGI_SetVideoMode(_THIS, SDL_Surface *current, int width, int height, int bpp, Uint32 flags);
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55 static int GGI_SetColors(_THIS, int firstcolor, int ncolors,
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56 SDL_Color *colors);
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57 static void GGI_VideoQuit(_THIS);
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58
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59 /* Hardware surface functions */
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60 static int GGI_AllocHWSurface(_THIS, SDL_Surface *surface);
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61 static int GGI_LockHWSurface(_THIS, SDL_Surface *surface);
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62 static void GGI_UnlockHWSurface(_THIS, SDL_Surface *surface);
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63 static void GGI_FreeHWSurface(_THIS, SDL_Surface *surface);
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64
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65 /* GGI driver bootstrap functions */
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66
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67 static int GGI_Available(void)
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68 {
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69 ggi_visual_t *vis;
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71 vis = NULL;
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72 if (ggiInit() == 0) {
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73 vis = ggiOpen(NULL);
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74 if (vis != NULL) {
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75 ggiClose(vis);
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76 }
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77 }
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78 return (vis != NULL);
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79 }
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80
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81 static void GGI_DeleteDevice(SDL_VideoDevice *device)
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82 {
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83 SDL_free(device->hidden);
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84 SDL_free(device);
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85 }
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86
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87 static SDL_VideoDevice *GGI_CreateDevice(int devindex)
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88 {
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89 SDL_VideoDevice *device;
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90
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91 /* Initialize all variables that we clean on shutdown */
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92 device = (SDL_VideoDevice *)SDL_malloc(sizeof(SDL_VideoDevice));
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93 if ( device ) {
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94 SDL_memset(device, 0, (sizeof *device));
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95 device->hidden = (struct SDL_PrivateVideoData *)
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96 SDL_malloc((sizeof *device->hidden));
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97 }
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98 if ( (device == NULL) || (device->hidden == NULL) ) {
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99 SDL_OutOfMemory();
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100 if ( device ) {
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101 SDL_free(device);
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102 }
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103 return(0);
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104 }
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105 SDL_memset(device->hidden, 0, (sizeof *device->hidden));
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106
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107 /* Set the function pointers */
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108 device->VideoInit = GGI_VideoInit;
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109 device->ListModes = GGI_ListModes;
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110 device->SetVideoMode = GGI_SetVideoMode;
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111 device->SetColors = GGI_SetColors;
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112 device->UpdateRects = NULL;
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113 device->VideoQuit = GGI_VideoQuit;
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114 device->AllocHWSurface = GGI_AllocHWSurface;
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115 device->CheckHWBlit = NULL;
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116 device->FillHWRect = NULL;
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117 device->SetHWColorKey = NULL;
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118 device->SetHWAlpha = NULL;
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119 device->LockHWSurface = GGI_LockHWSurface;
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120 device->UnlockHWSurface = GGI_UnlockHWSurface;
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121 device->FlipHWSurface = NULL;
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122 device->FreeHWSurface = GGI_FreeHWSurface;
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123 device->SetCaption = NULL;
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124 device->SetIcon = NULL;
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125 device->IconifyWindow = NULL;
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126 device->GrabInput = NULL;
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127 device->GetWMInfo = NULL;
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128 device->InitOSKeymap = GGI_InitOSKeymap;
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129 device->PumpEvents = GGI_PumpEvents;
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130
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131 device->free = GGI_DeleteDevice;
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132
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133 return device;
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134 }
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135
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136 VideoBootStrap GGI_bootstrap = {
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137 "ggi", "General Graphics Interface (GGI)",
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138 GGI_Available, GGI_CreateDevice
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139 };
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140
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141
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142 static SDL_Rect video_mode;
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143 static SDL_Rect *SDL_modelist[4] = { NULL, NULL, NULL, NULL };
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144
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145 int GGI_VideoInit(_THIS, SDL_PixelFormat *vformat)
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146 {
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147 ggi_mode mode =
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148 {
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149 1,
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150 { GGI_AUTO, GGI_AUTO },
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151 { GGI_AUTO, GGI_AUTO },
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152 { 0, 0 },
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153 GT_AUTO,
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154 { GGI_AUTO, GGI_AUTO }
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155 };
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156 struct private_hwdata *priv;
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157 ggi_color pal[256], map[256];
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158 const ggi_directbuffer *db;
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159 int err, num_bufs;
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160 ggi_pixel white, black;
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161
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162 priv = SDL_malloc(sizeof(struct private_hwdata));
0
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163 if (priv == NULL)
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164 {
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165 SDL_SetError("Unhandled GGI mode type!\n");
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166 GGI_VideoQuit(NULL);
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167 }
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168
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169 if (ggiInit() != 0)
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170 {
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171 SDL_SetError("Unable to initialize GGI!\n");
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172 GGI_VideoQuit(NULL);
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173 }
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174
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175 VIS = ggiOpen(NULL);
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176 if (VIS == NULL)
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177 {
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178 SDL_SetError("Unable to open default GGI visual!\n");
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179 ggiExit();
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180 GGI_VideoQuit(NULL);
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181 }
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182
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183 ggiSetFlags(VIS, GGIFLAG_ASYNC);
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184
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185 /* Validate mode, autodetecting any GGI_AUTO or GT_AUTO fields */
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186 ggiCheckMode(VIS, &mode);
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187
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188 /* At this point we should have a valid mode - try to set it */
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189 err = ggiSetMode(VIS, &mode);
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190
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191 /* If we couldn't set _any_ modes, something is very wrong */
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192 if (err)
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193 {
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194 SDL_SetError("Can't set a mode!\n");
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195 ggiClose(VIS);
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196 ggiExit();
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197 GGI_VideoQuit(NULL);
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198 }
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199
1545
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200 /* Determine the current screen size */
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201 this->info.current_w = mode.virt.x;
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202 this->info.current_h = mode.virt.y;
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203
0
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204 /* Set a palette for palletized modes */
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205 if (GT_SCHEME(mode.graphtype) == GT_PALETTE)
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206 {
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207 ggiSetColorfulPalette(VIS);
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208 ggiGetPalette(VIS, 0, 1 << vformat->BitsPerPixel, pal);
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209 }
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210
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211 /* Now we try to get the DirectBuffer info, which determines whether
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212 * SDL can access hardware surfaces directly. */
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213
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214 num_bufs = ggiDBGetNumBuffers(VIS);
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215
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216 if (num_bufs > 0)
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217 {
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218 db = ggiDBGetBuffer(VIS, 0); /* Only handle one DB for now */
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219
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220 vformat->BitsPerPixel = db->buffer.plb.pixelformat->depth;
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221
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222 vformat->Rmask = db->buffer.plb.pixelformat->red_mask;
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223 vformat->Gmask = db->buffer.plb.pixelformat->green_mask;
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224 vformat->Bmask = db->buffer.plb.pixelformat->blue_mask;
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225
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diff changeset
226 /* Fill in our hardware acceleration capabilities */
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diff changeset
227
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228 this->info.wm_available = 0;
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229 this->info.hw_available = 1;
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230 this->info.video_mem = db->buffer.plb.stride * mode.virt.y;
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231 }
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diff changeset
232
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233 video_mode.x = 0;
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diff changeset
234 video_mode.y = 0;
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diff changeset
235 video_mode.w = mode.virt.x;
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diff changeset
236 video_mode.h = mode.virt.y;
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diff changeset
237 SDL_modelist[((vformat->BitsPerPixel + 7) / 8) - 1] = &video_mode;
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238
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diff changeset
239 /* We're done! */
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diff changeset
240 return(0);
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parents:
diff changeset
241 }
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242
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243 static SDL_Rect **GGI_ListModes(_THIS, SDL_PixelFormat *format, Uint32 flags)
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244 {
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diff changeset
245 return(&SDL_modelist[((format->BitsPerPixel + 7) / 8) - 1]);
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246 }
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diff changeset
247
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parents:
diff changeset
248 /* Various screen update functions available */
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diff changeset
249 static void GGI_DirectUpdate(_THIS, int numrects, SDL_Rect *rects);
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diff changeset
250
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251 SDL_Surface *GGI_SetVideoMode(_THIS, SDL_Surface *current, int width, int height, int bpp, Uint32 flags)
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parents:
diff changeset
252 {
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diff changeset
253 ggi_mode mode =
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diff changeset
254 {
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diff changeset
255 1,
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diff changeset
256 { GGI_AUTO, GGI_AUTO },
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diff changeset
257 { GGI_AUTO, GGI_AUTO },
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parents:
diff changeset
258 { 0, 0 },
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diff changeset
259 GT_AUTO,
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parents:
diff changeset
260 { GGI_AUTO, GGI_AUTO }
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parents:
diff changeset
261 };
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diff changeset
262 const ggi_directbuffer *db;
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diff changeset
263 ggi_color pal[256];
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parents:
diff changeset
264 int err;
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diff changeset
265
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266 fprintf(stderr, "GGI_SetVideoMode()\n");
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diff changeset
267
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diff changeset
268 mode.visible.x = mode.virt.x = width;
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diff changeset
269 mode.visible.y = mode.virt.y = height;
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parents:
diff changeset
270
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parents:
diff changeset
271 /* Translate requested SDL bit depth into a GGI mode */
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parents:
diff changeset
272 switch (bpp)
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parents:
diff changeset
273 {
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parents:
diff changeset
274 case 1: mode.graphtype = GT_1BIT; break;
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parents:
diff changeset
275 case 2: mode.graphtype = GT_2BIT; break;
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parents:
diff changeset
276 case 4: mode.graphtype = GT_4BIT; break;
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parents:
diff changeset
277 case 8: mode.graphtype = GT_8BIT; break;
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parents:
diff changeset
278 case 15: mode.graphtype = GT_15BIT; break;
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parents:
diff changeset
279 case 16: mode.graphtype = GT_16BIT; break;
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parents:
diff changeset
280 case 24: mode.graphtype = GT_24BIT; break;
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diff changeset
281 case 32: mode.graphtype = GT_32BIT; break;
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parents:
diff changeset
282 default:
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parents:
diff changeset
283 SDL_SetError("Unknown SDL bit depth, using GT_AUTO....\n");
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parents:
diff changeset
284 mode.graphtype = GT_AUTO;
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parents:
diff changeset
285 }
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parents:
diff changeset
286
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parents:
diff changeset
287 /* Validate mode, autodetecting any GGI_AUTO or GT_AUTO fields */
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parents:
diff changeset
288 ggiCheckMode(VIS, &mode);
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diff changeset
289
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parents:
diff changeset
290 /* At this point we should have a valid mode - try to set it */
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parents:
diff changeset
291 err = ggiSetMode(VIS, &mode);
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parents:
diff changeset
292
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diff changeset
293 /* If we couldn't set _any_ modes, something is very wrong */
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parents:
diff changeset
294 if (err)
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parents:
diff changeset
295 {
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diff changeset
296 SDL_SetError("Can't set a mode!\n");
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parents:
diff changeset
297 ggiClose(VIS);
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parents:
diff changeset
298 ggiExit();
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parents:
diff changeset
299 GGI_VideoQuit(NULL);
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parents:
diff changeset
300 }
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parents:
diff changeset
301
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parents:
diff changeset
302 /* Set a palette for palletized modes */
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parents:
diff changeset
303 if (GT_SCHEME(mode.graphtype) == GT_PALETTE)
74212992fb08 Initial revision
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parents:
diff changeset
304 {
74212992fb08 Initial revision
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diff changeset
305 ggiSetColorfulPalette(VIS);
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parents:
diff changeset
306 ggiGetPalette(VIS, 0, 1 << bpp, pal);
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parents:
diff changeset
307 }
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parents:
diff changeset
308
74212992fb08 Initial revision
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parents:
diff changeset
309 db = ggiDBGetBuffer(VIS, 0);
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parents:
diff changeset
310
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parents:
diff changeset
311 /* Set up the new mode framebuffer */
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parents:
diff changeset
312 current->flags = (SDL_FULLSCREEN | SDL_HWSURFACE);
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parents:
diff changeset
313 current->w = mode.virt.x;
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parents:
diff changeset
314 current->h = mode.virt.y;
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parents:
diff changeset
315 current->pitch = db->buffer.plb.stride;
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parents:
diff changeset
316 current->pixels = db->read;
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parents:
diff changeset
317
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parents:
diff changeset
318 /* Set the blit function */
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parents:
diff changeset
319 this->UpdateRects = GGI_DirectUpdate;
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parents:
diff changeset
320
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parents:
diff changeset
321 /* We're done */
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322 return(current);
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323 }
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324
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325 static int GGI_AllocHWSurface(_THIS, SDL_Surface *surface)
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326 {
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327 return(-1);
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328 }
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329 static void GGI_FreeHWSurface(_THIS, SDL_Surface *surface)
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330 {
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331 return;
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332 }
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333 static int GGI_LockHWSurface(_THIS, SDL_Surface *surface)
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334 {
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335 return(0);
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336 }
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337 static void GGI_UnlockHWSurface(_THIS, SDL_Surface *surface)
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338 {
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339 return;
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340 }
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341
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342 static void GGI_DirectUpdate(_THIS, int numrects, SDL_Rect *rects)
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343 {
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344 int i;
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345
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346 /* ggiFlush(VIS); */
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347
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348 for (i = 0; i < numrects; i++)
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349 {
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350 ggiFlushRegion(VIS, rects[i].x, rects[i].y, rects[i].w, rects[i].h);
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351 }
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352 return;
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353 }
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354
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355 int GGI_SetColors(_THIS, int firstcolor, int ncolors, SDL_Color *colors)
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356 {
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357 int i;
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358 ggi_color pal[256];
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359
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360 /* Set up the colormap */
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361 for (i = 0; i < ncolors; i++)
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362 {
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363 pal[i].r = (colors[i].r << 8) | colors[i].r;
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364 pal[i].g = (colors[i].g << 8) | colors[i].g;
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365 pal[i].b = (colors[i].b << 8) | colors[i].b;
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366 }
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367
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368 ggiSetPalette(VIS, firstcolor, ncolors, pal);
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369
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370 return 1;
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371 }
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372
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373 void GGI_VideoQuit(_THIS)
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374 {
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375 }
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376 void GGI_FinalQuit(void)
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377 {
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378 }