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annotate src/video/fbcon/SDL_fbvideo.h @ 2157:75a6c5deba84

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Fixed bug #451 SDL_memset4 copies a 32-bit value, not an 8-bit value.
author Sam Lantinga <slouken@libsdl.org>
date Sun, 08 Jul 2007 14:24:55 +0000
parents c121d94672cb
children 99210400e8b9
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 #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 {
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45 struct vidmem_bucket *prev;
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46 int used;
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47 int dirty;
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48 char *base;
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49 unsigned int size;
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50 struct vidmem_bucket *next;
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51 } vidmem_bucket;
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52
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53 /* Private display data */
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54 struct SDL_PrivateVideoData
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55 {
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56 int console_fd;
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57 struct fb_var_screeninfo cache_vinfo;
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58 struct fb_var_screeninfo saved_vinfo;
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59 int saved_cmaplen;
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60 __u16 *saved_cmap;
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61
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62 int current_vt;
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63 int saved_vt;
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64 int keyboard_fd;
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65 int saved_kbd_mode;
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66 struct termios saved_kbd_termios;
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67
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68 int mouse_fd;
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69 #if SDL_INPUT_TSLIB
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70 struct tsdev *ts_dev;
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71 #endif
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72
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73 char *mapped_mem;
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74 int mapped_memlen;
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75 int mapped_offset;
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76 char *mapped_io;
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77 long mapped_iolen;
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78 int flip_page;
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79 char *flip_address[2];
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80
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81 #define NUM_MODELISTS 4 /* 8, 16, 24, and 32 bits-per-pixel */
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82 int SDL_nummodes[NUM_MODELISTS];
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83 SDL_Rect **SDL_modelist[NUM_MODELISTS];
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84
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85 vidmem_bucket surfaces;
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86 int surfaces_memtotal;
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87 int surfaces_memleft;
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88
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89 SDL_mutex *hw_lock;
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90 int switched_away;
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91 struct fb_var_screeninfo screen_vinfo;
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92 Uint32 screen_arealen;
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93 Uint8 *screen_contents;
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94 __u16 screen_palette[3 * 256];
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95
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96 void (*wait_vbl) (_THIS);
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97 void (*wait_idle) (_THIS);
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98 };
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99 /* Old variable names */
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100 #define console_fd (this->hidden->console_fd)
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101 #define current_vt (this->hidden->current_vt)
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102 #define saved_vt (this->hidden->saved_vt)
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103 #define keyboard_fd (this->hidden->keyboard_fd)
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104 #define saved_kbd_mode (this->hidden->saved_kbd_mode)
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105 #define saved_kbd_termios (this->hidden->saved_kbd_termios)
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106 #define mouse_fd (this->hidden->mouse_fd)
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107 #if SDL_INPUT_TSLIB
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108 #define ts_dev (this->hidden->ts_dev)
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109 #endif
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110 #define cache_vinfo (this->hidden->cache_vinfo)
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111 #define saved_vinfo (this->hidden->saved_vinfo)
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112 #define saved_cmaplen (this->hidden->saved_cmaplen)
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113 #define saved_cmap (this->hidden->saved_cmap)
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114 #define mapped_mem (this->hidden->mapped_mem)
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115 #define mapped_memlen (this->hidden->mapped_memlen)
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116 #define mapped_offset (this->hidden->mapped_offset)
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117 #define mapped_io (this->hidden->mapped_io)
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118 #define mapped_iolen (this->hidden->mapped_iolen)
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119 #define flip_page (this->hidden->flip_page)
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120 #define flip_address (this->hidden->flip_address)
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121 #define SDL_nummodes (this->hidden->SDL_nummodes)
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122 #define SDL_modelist (this->hidden->SDL_modelist)
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123 #define surfaces (this->hidden->surfaces)
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124 #define surfaces_memtotal (this->hidden->surfaces_memtotal)
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125 #define surfaces_memleft (this->hidden->surfaces_memleft)
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126 #define hw_lock (this->hidden->hw_lock)
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127 #define switched_away (this->hidden->switched_away)
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128 #define screen_vinfo (this->hidden->screen_vinfo)
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129 #define screen_arealen (this->hidden->screen_arealen)
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130 #define screen_contents (this->hidden->screen_contents)
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131 #define screen_palette (this->hidden->screen_palette)
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132 #define wait_vbl (this->hidden->wait_vbl)
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133 #define wait_idle (this->hidden->wait_idle)
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134
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135 /* Accelerator types that are supported by the driver, but are not
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136 necessarily in the kernel headers on the system we compile on.
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137 */
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138 #ifndef FB_ACCEL_MATROX_MGAG400
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139 #define FB_ACCEL_MATROX_MGAG400 26 /* Matrox G400 */
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140 #endif
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141 #ifndef FB_ACCEL_3DFX_BANSHEE
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142 #define FB_ACCEL_3DFX_BANSHEE 31 /* 3Dfx Banshee */
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143 #endif
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144
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145 /* These functions are defined in SDL_fbvideo.c */
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146 extern void FB_SavePaletteTo(_THIS, int palette_len, __u16 * area);
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147 extern void FB_RestorePaletteFrom(_THIS, int palette_len, __u16 * area);
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148
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149 /* These are utility functions for working with video surfaces */
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150
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151 static __inline__ void
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152 FB_AddBusySurface(SDL_Surface * surface)
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153 {
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154 ((vidmem_bucket *) surface->hwdata)->dirty = 1;
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155 }
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156
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157 static __inline__ int
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158 FB_IsSurfaceBusy(SDL_Surface * surface)
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159 {
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160 return ((vidmem_bucket *) surface->hwdata)->dirty;
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161 }
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162
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163 static __inline__ void
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164 FB_WaitBusySurfaces(_THIS)
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165 {
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166 vidmem_bucket *bucket;
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167
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168 /* Wait for graphic operations to complete */
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169 wait_idle(this);
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170
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171 /* Clear all surface dirty bits */
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172 for (bucket = &surfaces; bucket; bucket = bucket->next) {
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173 bucket->dirty = 0;
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174 }
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175 }
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176
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177 static __inline__ void
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178 FB_dst_to_xy(_THIS, SDL_Surface * dst, int *x, int *y)
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179 {
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180 *x = (long) ((char *) dst->pixels - mapped_mem) % this->screen->pitch;
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181 *y = (long) ((char *) dst->pixels - mapped_mem) / this->screen->pitch;
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182 if (dst == this->screen) {
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183 *x += this->offset_x;
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184 *y += this->offset_y;
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185 }
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186 }
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187
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188 #endif /* _SDL_fbvideo_h */
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189 /* vi: set ts=4 sw=4 expandtab: */