annotate src/video/ggi/SDL_ggivideo.c @ 1312:c9b51268668f

Updated copyright information and removed rcs id lines (problematic in branch merges) I batch edited these files, so please let me know if I've accidentally removed anybody's credit here.
author Sam Lantinga <slouken@libsdl.org>
date Wed, 01 Feb 2006 06:32:25 +0000
parents b8d311d90021
children 3692456e7b0f
rev   line source
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2006 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 /* GGI-based SDL video driver implementation.
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24 */
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25
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26 #include <stdlib.h>
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27 #include <stdio.h>
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28 #include <fcntl.h>
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29 #include <unistd.h>
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30 #include <sys/mman.h>
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31
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32 #include <ggi/ggi.h>
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33 #include <ggi/gii.h>
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34
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35 #include "SDL.h"
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36 #include "SDL_error.h"
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37 #include "SDL_video.h"
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38 #include "SDL_mouse.h"
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39 #include "SDL_sysvideo.h"
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40 #include "SDL_pixels_c.h"
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41 #include "SDL_events_c.h"
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42 #include "SDL_ggivideo.h"
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43 #include "SDL_ggimouse_c.h"
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44 #include "SDL_ggievents_c.h"
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45
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46
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47 struct private_hwdata
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48 {
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49 ggi_visual_t vis;
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50 };
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51
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52 ggi_visual_t VIS;
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53
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54 /* Initialization/Query functions */
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55 static int GGI_VideoInit(_THIS, SDL_PixelFormat *vformat);
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56 static SDL_Rect **GGI_ListModes(_THIS, SDL_PixelFormat *format, Uint32 flags);
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57 static SDL_Surface *GGI_SetVideoMode(_THIS, SDL_Surface *current, int width, int height, int bpp, Uint32 flags);
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58 static int GGI_SetColors(_THIS, int firstcolor, int ncolors,
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59 SDL_Color *colors);
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60 static void GGI_VideoQuit(_THIS);
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61
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62 /* Hardware surface functions */
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63 static int GGI_AllocHWSurface(_THIS, SDL_Surface *surface);
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64 static int GGI_LockHWSurface(_THIS, SDL_Surface *surface);
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65 static void GGI_UnlockHWSurface(_THIS, SDL_Surface *surface);
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66 static void GGI_FreeHWSurface(_THIS, SDL_Surface *surface);
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67
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68 /* GGI driver bootstrap functions */
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69
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70 static int GGI_Available(void)
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71 {
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72 ggi_visual_t *vis;
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73
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74 vis = NULL;
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75 if (ggiInit() == 0) {
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76 vis = ggiOpen(NULL);
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77 if (vis != NULL) {
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78 ggiClose(vis);
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79 }
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80 }
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81 return (vis != NULL);
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82 }
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83
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84 static void GGI_DeleteDevice(SDL_VideoDevice *device)
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85 {
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86 free(device->hidden);
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87 free(device);
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88 }
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89
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90 static SDL_VideoDevice *GGI_CreateDevice(int devindex)
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91 {
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92 SDL_VideoDevice *device;
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93
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94 /* Initialize all variables that we clean on shutdown */
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95 device = (SDL_VideoDevice *)malloc(sizeof(SDL_VideoDevice));
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96 if ( device ) {
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97 memset(device, 0, (sizeof *device));
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98 device->hidden = (struct SDL_PrivateVideoData *)
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99 malloc((sizeof *device->hidden));
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100 }
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101 if ( (device == NULL) || (device->hidden == NULL) ) {
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102 SDL_OutOfMemory();
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103 if ( device ) {
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104 free(device);
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105 }
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106 return(0);
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107 }
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108 memset(device->hidden, 0, (sizeof *device->hidden));
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109
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110 /* Set the function pointers */
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111 device->VideoInit = GGI_VideoInit;
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112 device->ListModes = GGI_ListModes;
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113 device->SetVideoMode = GGI_SetVideoMode;
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114 device->SetColors = GGI_SetColors;
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115 device->UpdateRects = NULL;
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116 device->VideoQuit = GGI_VideoQuit;
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117 device->AllocHWSurface = GGI_AllocHWSurface;
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118 device->CheckHWBlit = NULL;
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119 device->FillHWRect = NULL;
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120 device->SetHWColorKey = NULL;
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121 device->SetHWAlpha = NULL;
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122 device->LockHWSurface = GGI_LockHWSurface;
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123 device->UnlockHWSurface = GGI_UnlockHWSurface;
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124 device->FlipHWSurface = NULL;
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125 device->FreeHWSurface = GGI_FreeHWSurface;
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126 device->SetCaption = NULL;
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127 device->SetIcon = NULL;
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128 device->IconifyWindow = NULL;
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129 device->GrabInput = NULL;
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130 device->GetWMInfo = NULL;
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131 device->InitOSKeymap = GGI_InitOSKeymap;
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132 device->PumpEvents = GGI_PumpEvents;
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133
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134 device->free = GGI_DeleteDevice;
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135
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136 return device;
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137 }
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138
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139 VideoBootStrap GGI_bootstrap = {
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140 "ggi", "General Graphics Interface (GGI)",
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141 GGI_Available, GGI_CreateDevice
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142 };
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143
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144
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145 static SDL_Rect video_mode;
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146 static SDL_Rect *SDL_modelist[4] = { NULL, NULL, NULL, NULL };
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147
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148 int GGI_VideoInit(_THIS, SDL_PixelFormat *vformat)
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149 {
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150 ggi_mode mode =
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151 {
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152 1,
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153 { GGI_AUTO, GGI_AUTO },
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154 { GGI_AUTO, GGI_AUTO },
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155 { 0, 0 },
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156 GT_AUTO,
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157 { GGI_AUTO, GGI_AUTO }
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158 };
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159 struct private_hwdata *priv;
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160 ggi_color pal[256], map[256];
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161 const ggi_directbuffer *db;
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162 int err, num_bufs;
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163 ggi_pixel white, black;
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164
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165 priv = malloc(sizeof(struct private_hwdata));
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166 if (priv == NULL)
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167 {
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168 SDL_SetError("Unhandled GGI mode type!\n");
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169 GGI_VideoQuit(NULL);
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170 }
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171
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172 if (ggiInit() != 0)
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173 {
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174 SDL_SetError("Unable to initialize GGI!\n");
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175 GGI_VideoQuit(NULL);
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176 }
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177
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178 VIS = ggiOpen(NULL);
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179 if (VIS == NULL)
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180 {
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181 SDL_SetError("Unable to open default GGI visual!\n");
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182 ggiExit();
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183 GGI_VideoQuit(NULL);
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184 }
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185
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186 ggiSetFlags(VIS, GGIFLAG_ASYNC);
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187
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188 /* Validate mode, autodetecting any GGI_AUTO or GT_AUTO fields */
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189 ggiCheckMode(VIS, &mode);
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190
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191 /* At this point we should have a valid mode - try to set it */
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192 err = ggiSetMode(VIS, &mode);
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193
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194 /* If we couldn't set _any_ modes, something is very wrong */
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195 if (err)
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196 {
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197 SDL_SetError("Can't set a mode!\n");
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198 ggiClose(VIS);
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199 ggiExit();
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200 GGI_VideoQuit(NULL);
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201 }
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202
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203 /* Set a palette for palletized modes */
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204 if (GT_SCHEME(mode.graphtype) == GT_PALETTE)
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205 {
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206 ggiSetColorfulPalette(VIS);
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207 ggiGetPalette(VIS, 0, 1 << vformat->BitsPerPixel, pal);
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208 }
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209
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210 /* Now we try to get the DirectBuffer info, which determines whether
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211 * SDL can access hardware surfaces directly. */
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212
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213 num_bufs = ggiDBGetNumBuffers(VIS);
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214
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215 if (num_bufs > 0)
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216 {
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217 db = ggiDBGetBuffer(VIS, 0); /* Only handle one DB for now */
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218
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219 vformat->BitsPerPixel = db->buffer.plb.pixelformat->depth;
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220
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221 vformat->Rmask = db->buffer.plb.pixelformat->red_mask;
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222 vformat->Gmask = db->buffer.plb.pixelformat->green_mask;
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223 vformat->Bmask = db->buffer.plb.pixelformat->blue_mask;
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224
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225 /* Fill in our hardware acceleration capabilities */
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226
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227 this->info.wm_available = 0;
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228 this->info.hw_available = 1;
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229 this->info.video_mem = db->buffer.plb.stride * mode.virt.y;
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230 }
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231
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232 video_mode.x = 0;
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233 video_mode.y = 0;
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234 video_mode.w = mode.virt.x;
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235 video_mode.h = mode.virt.y;
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236 SDL_modelist[((vformat->BitsPerPixel + 7) / 8) - 1] = &video_mode;
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237
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238 /* We're done! */
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239 return(0);
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240 }
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241
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242 static SDL_Rect **GGI_ListModes(_THIS, SDL_PixelFormat *format, Uint32 flags)
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243 {
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244 return(&SDL_modelist[((format->BitsPerPixel + 7) / 8) - 1]);
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245 }
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246
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247 /* Various screen update functions available */
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248 static void GGI_DirectUpdate(_THIS, int numrects, SDL_Rect *rects);
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249
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250 SDL_Surface *GGI_SetVideoMode(_THIS, SDL_Surface *current, int width, int height, int bpp, Uint32 flags)
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251 {
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252 ggi_mode mode =
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253 {
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254 1,
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255 { GGI_AUTO, GGI_AUTO },
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256 { GGI_AUTO, GGI_AUTO },
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diff changeset
257 { 0, 0 },
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258 GT_AUTO,
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259 { GGI_AUTO, GGI_AUTO }
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260 };
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261 const ggi_directbuffer *db;
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262 ggi_color pal[256];
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diff changeset
263 int err;
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diff changeset
264
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265 fprintf(stderr, "GGI_SetVideoMode()\n");
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266
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267 mode.visible.x = mode.virt.x = width;
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268 mode.visible.y = mode.virt.y = height;
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diff changeset
269
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diff changeset
270 /* Translate requested SDL bit depth into a GGI mode */
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diff changeset
271 switch (bpp)
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diff changeset
272 {
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273 case 1: mode.graphtype = GT_1BIT; break;
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diff changeset
274 case 2: mode.graphtype = GT_2BIT; break;
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diff changeset
275 case 4: mode.graphtype = GT_4BIT; break;
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diff changeset
276 case 8: mode.graphtype = GT_8BIT; break;
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diff changeset
277 case 15: mode.graphtype = GT_15BIT; break;
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parents:
diff changeset
278 case 16: mode.graphtype = GT_16BIT; break;
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parents:
diff changeset
279 case 24: mode.graphtype = GT_24BIT; break;
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diff changeset
280 case 32: mode.graphtype = GT_32BIT; break;
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parents:
diff changeset
281 default:
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diff changeset
282 SDL_SetError("Unknown SDL bit depth, using GT_AUTO....\n");
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diff changeset
283 mode.graphtype = GT_AUTO;
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diff changeset
284 }
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parents:
diff changeset
285
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parents:
diff changeset
286 /* Validate mode, autodetecting any GGI_AUTO or GT_AUTO fields */
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diff changeset
287 ggiCheckMode(VIS, &mode);
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diff changeset
288
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diff changeset
289 /* At this point we should have a valid mode - try to set it */
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diff changeset
290 err = ggiSetMode(VIS, &mode);
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diff changeset
291
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diff changeset
292 /* If we couldn't set _any_ modes, something is very wrong */
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parents:
diff changeset
293 if (err)
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parents:
diff changeset
294 {
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diff changeset
295 SDL_SetError("Can't set a mode!\n");
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diff changeset
296 ggiClose(VIS);
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parents:
diff changeset
297 ggiExit();
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diff changeset
298 GGI_VideoQuit(NULL);
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parents:
diff changeset
299 }
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parents:
diff changeset
300
74212992fb08 Initial revision
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parents:
diff changeset
301 /* Set a palette for palletized modes */
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parents:
diff changeset
302 if (GT_SCHEME(mode.graphtype) == GT_PALETTE)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
303 {
74212992fb08 Initial revision
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diff changeset
304 ggiSetColorfulPalette(VIS);
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parents:
diff changeset
305 ggiGetPalette(VIS, 0, 1 << bpp, pal);
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parents:
diff changeset
306 }
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parents:
diff changeset
307
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parents:
diff changeset
308 db = ggiDBGetBuffer(VIS, 0);
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parents:
diff changeset
309
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parents:
diff changeset
310 /* Set up the new mode framebuffer */
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parents:
diff changeset
311 current->flags = (SDL_FULLSCREEN | SDL_HWSURFACE);
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parents:
diff changeset
312 current->w = mode.virt.x;
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parents:
diff changeset
313 current->h = mode.virt.y;
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parents:
diff changeset
314 current->pitch = db->buffer.plb.stride;
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parents:
diff changeset
315 current->pixels = db->read;
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parents:
diff changeset
316
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parents:
diff changeset
317 /* Set the blit function */
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parents:
diff changeset
318 this->UpdateRects = GGI_DirectUpdate;
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parents:
diff changeset
319
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parents:
diff changeset
320 /* We're done */
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parents:
diff changeset
321 return(current);
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parents:
diff changeset
322 }
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parents:
diff changeset
323
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parents:
diff changeset
324 static int GGI_AllocHWSurface(_THIS, SDL_Surface *surface)
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parents:
diff changeset
325 {
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parents:
diff changeset
326 return(-1);
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parents:
diff changeset
327 }
74212992fb08 Initial revision
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parents:
diff changeset
328 static void GGI_FreeHWSurface(_THIS, SDL_Surface *surface)
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parents:
diff changeset
329 {
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parents:
diff changeset
330 return;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
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331 }
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332 static int GGI_LockHWSurface(_THIS, SDL_Surface *surface)
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333 {
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334 return(0);
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335 }
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336 static void GGI_UnlockHWSurface(_THIS, SDL_Surface *surface)
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337 {
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338 return;
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339 }
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340
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341 static void GGI_DirectUpdate(_THIS, int numrects, SDL_Rect *rects)
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342 {
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343 int i;
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344
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345 /* ggiFlush(VIS); */
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346
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347 for (i = 0; i < numrects; i++)
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348 {
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349 ggiFlushRegion(VIS, rects[i].x, rects[i].y, rects[i].w, rects[i].h);
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350 }
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351 return;
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352 }
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353
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354 int GGI_SetColors(_THIS, int firstcolor, int ncolors, SDL_Color *colors)
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355 {
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356 int i;
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357 ggi_color pal[256];
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358
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359 /* Set up the colormap */
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360 for (i = 0; i < ncolors; i++)
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361 {
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362 pal[i].r = (colors[i].r << 8) | colors[i].r;
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363 pal[i].g = (colors[i].g << 8) | colors[i].g;
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364 pal[i].b = (colors[i].b << 8) | colors[i].b;
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365 }
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366
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367 ggiSetPalette(VIS, firstcolor, ncolors, pal);
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368
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369 return 1;
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370 }
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371
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372 void GGI_VideoQuit(_THIS)
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373 {
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374 }
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375 void GGI_FinalQuit(void)
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376 {
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377 }