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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 #ifndef _SDL_fbvideo_h |
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25 #define _SDL_fbvideo_h |
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26 |
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27 #include <sys/types.h> |
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28 #include <termios.h> |
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29 #include <linux/fb.h> |
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30 |
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31 #include "SDL_mouse.h" |
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32 #include "SDL_mutex.h" |
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33 #include "../SDL_sysvideo.h" |
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34 #if SDL_INPUT_TSLIB |
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35 #include "tslib.h" |
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36 #endif |
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37 |
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38 /* Hidden "this" pointer for the video functions */ |
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39 #define _THIS SDL_VideoDevice *this |
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40 |
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41 |
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42 /* This is the structure we use to keep track of video memory */ |
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43 typedef struct vidmem_bucket { |
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44 struct vidmem_bucket *prev; |
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45 int used; |
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46 int dirty; |
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47 char *base; |
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48 unsigned int size; |
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49 struct vidmem_bucket *next; |
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50 } vidmem_bucket; |
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51 |
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52 /* Private display data */ |
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53 struct SDL_PrivateVideoData { |
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54 int console_fd; |
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55 struct fb_var_screeninfo cache_vinfo; |
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56 struct fb_var_screeninfo saved_vinfo; |
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57 int saved_cmaplen; |
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58 __u16 *saved_cmap; |
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59 |
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60 int current_vt; |
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61 int saved_vt; |
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62 int keyboard_fd; |
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63 int saved_kbd_mode; |
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64 struct termios saved_kbd_termios; |
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65 |
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66 int mouse_fd; |
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67 #if SDL_INPUT_TSLIB |
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68 struct tsdev *ts_dev; |
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69 #endif |
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70 |
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71 char *mapped_mem; |
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72 int mapped_memlen; |
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73 int mapped_offset; |
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74 char *mapped_io; |
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75 long mapped_iolen; |
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76 int flip_page; |
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77 char *flip_address[2]; |
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78 |
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79 #define NUM_MODELISTS 4 /* 8, 16, 24, and 32 bits-per-pixel */ |
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80 int SDL_nummodes[NUM_MODELISTS]; |
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81 SDL_Rect **SDL_modelist[NUM_MODELISTS]; |
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82 |
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83 vidmem_bucket surfaces; |
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84 int surfaces_memtotal; |
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85 int surfaces_memleft; |
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86 |
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87 SDL_mutex *hw_lock; |
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88 int switched_away; |
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89 struct fb_var_screeninfo screen_vinfo; |
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90 Uint32 screen_arealen; |
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91 Uint8 *screen_contents; |
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92 __u16 screen_palette[3*256]; |
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93 |
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94 void (*wait_vbl)(_THIS); |
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95 void (*wait_idle)(_THIS); |
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96 }; |
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97 /* Old variable names */ |
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98 #define console_fd (this->hidden->console_fd) |
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99 #define current_vt (this->hidden->current_vt) |
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100 #define saved_vt (this->hidden->saved_vt) |
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101 #define keyboard_fd (this->hidden->keyboard_fd) |
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102 #define saved_kbd_mode (this->hidden->saved_kbd_mode) |
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103 #define saved_kbd_termios (this->hidden->saved_kbd_termios) |
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104 #define mouse_fd (this->hidden->mouse_fd) |
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105 #if SDL_INPUT_TSLIB |
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106 #define ts_dev (this->hidden->ts_dev) |
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107 #endif |
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108 #define cache_vinfo (this->hidden->cache_vinfo) |
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109 #define saved_vinfo (this->hidden->saved_vinfo) |
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110 #define saved_cmaplen (this->hidden->saved_cmaplen) |
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111 #define saved_cmap (this->hidden->saved_cmap) |
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112 #define mapped_mem (this->hidden->mapped_mem) |
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113 #define mapped_memlen (this->hidden->mapped_memlen) |
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114 #define mapped_offset (this->hidden->mapped_offset) |
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115 #define mapped_io (this->hidden->mapped_io) |
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116 #define mapped_iolen (this->hidden->mapped_iolen) |
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117 #define flip_page (this->hidden->flip_page) |
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118 #define flip_address (this->hidden->flip_address) |
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119 #define SDL_nummodes (this->hidden->SDL_nummodes) |
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120 #define SDL_modelist (this->hidden->SDL_modelist) |
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121 #define surfaces (this->hidden->surfaces) |
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122 #define surfaces_memtotal (this->hidden->surfaces_memtotal) |
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123 #define surfaces_memleft (this->hidden->surfaces_memleft) |
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124 #define hw_lock (this->hidden->hw_lock) |
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125 #define switched_away (this->hidden->switched_away) |
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126 #define screen_vinfo (this->hidden->screen_vinfo) |
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127 #define screen_arealen (this->hidden->screen_arealen) |
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128 #define screen_contents (this->hidden->screen_contents) |
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129 #define screen_palette (this->hidden->screen_palette) |
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130 #define wait_vbl (this->hidden->wait_vbl) |
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131 #define wait_idle (this->hidden->wait_idle) |
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132 |
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133 /* Accelerator types that are supported by the driver, but are not |
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134 necessarily in the kernel headers on the system we compile on. |
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135 */ |
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136 #ifndef FB_ACCEL_MATROX_MGAG400 |
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137 #define FB_ACCEL_MATROX_MGAG400 26 /* Matrox G400 */ |
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138 #endif |
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139 #ifndef FB_ACCEL_3DFX_BANSHEE |
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140 #define FB_ACCEL_3DFX_BANSHEE 31 /* 3Dfx Banshee */ |
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141 #endif |
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142 |
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143 /* These functions are defined in SDL_fbvideo.c */ |
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144 extern void FB_SavePaletteTo(_THIS, int palette_len, __u16 *area); |
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145 extern void FB_RestorePaletteFrom(_THIS, int palette_len, __u16 *area); |
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146 |
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147 /* These are utility functions for working with video surfaces */ |
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148 |
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149 static __inline__ void FB_AddBusySurface(SDL_Surface *surface) |
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150 { |
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151 ((vidmem_bucket *)surface->hwdata)->dirty = 1; |
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152 } |
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153 |
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154 static __inline__ int FB_IsSurfaceBusy(SDL_Surface *surface) |
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155 { |
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156 return ((vidmem_bucket *)surface->hwdata)->dirty; |
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157 } |
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158 |
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159 static __inline__ void FB_WaitBusySurfaces(_THIS) |
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160 { |
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161 vidmem_bucket *bucket; |
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162 |
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163 /* Wait for graphic operations to complete */ |
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164 wait_idle(this); |
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165 |
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166 /* Clear all surface dirty bits */ |
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167 for ( bucket=&surfaces; bucket; bucket=bucket->next ) { |
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168 bucket->dirty = 0; |
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169 } |
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170 } |
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171 |
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172 static __inline__ void FB_dst_to_xy(_THIS, SDL_Surface *dst, int *x, int *y) |
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173 { |
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174 *x = (long)((char *)dst->pixels - mapped_mem)%this->screen->pitch; |
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175 *y = (long)((char *)dst->pixels - mapped_mem)/this->screen->pitch; |
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176 if ( dst == this->screen ) { |
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177 *x += this->offset_x; |
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178 *y += this->offset_y; |
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179 } |
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180 } |
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181 |
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182 #endif /* _SDL_fbvideo_h */ |