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annotate src/video/nanox/SDL_nximage.c @ 79:ffadd05de74d

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Allow the user to override the relative mouse mode. They almost never want to do this, as it seriously affects applications that rely on continuous relative mouse motion.
author Sam Lantinga <slouken@lokigames.com>
date Sat, 23 Jun 2001 22:00:59 +0000
parents 57bf11a5efd7
children e8157fcb3114
rev   line source
30
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997, 1998, 1999, 2000, 2001 Sam Lantinga
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4 Copyright (C) 2001 Hsieh-Fu Tsai
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5
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6 This library is free software; you can redistribute it and/or
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7 modify it under the terms of the GNU Library General Public
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8 License as published by the Free Software Foundation; either
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9 version 2 of the License, or (at your option) any later version.
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10
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11 This library is distributed in the hope that it will be useful,
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12 but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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14 Library General Public License for more details.
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15
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16 You should have received a copy of the GNU Library General Public
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17 License along with this library; if not, write to the Free
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18 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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19
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20 Sam Lantinga
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21 slouken@devolution.com
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22
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23 Hsieh-Fu Tsai
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24 clare@setabox.com
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25 */
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26
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27 #include <stdlib.h>
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28
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29 #include "SDL_error.h"
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30
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31 #include "SDL_nximage_c.h"
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32
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33 void NX_NormalUpdate (_THIS, int numrects, SDL_Rect * rects)
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34 {
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35 int i, j, xinc, yinc, destinc ;
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36 int x, y, w, h ;
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37 unsigned char * src = NULL, * dest = NULL ;
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38
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39 Dprintf ("enter NX_NormalUpdate\n") ;
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40
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41 xinc = this -> screen -> format -> BytesPerPixel ;
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42 yinc = this -> screen -> pitch ;
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43
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44 for (i = 0; i < numrects; ++ i) {
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45 x = rects [i].x, y = rects [i].y ;
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46 w = rects [i].w, h = rects [i].h ;
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47 src = SDL_Image + y * yinc + x * xinc ;
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48 dest = Image_buff ;
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49 destinc = w * xinc ;
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50
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51 // apply GammaRamp table
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52 #if (defined (NANOX_PIXEL_RGB) || defined (NANOX_PIXEL_0888) || \
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53 defined (NANOX_PIXEL_888))
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54 if (GammaRamp_R && GammaRamp_G && GammaRamp_B) {
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55 Uint8 * ptr ;
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56 int k ;
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57
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58 for (j = h; j > 0; -- j, src += yinc) {
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59 ptr = src - 1 ;
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60 for (k = w; k > 0; -- k) {
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61 #ifdef NANOX_PIXEL_RGB
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62 ptr += 2 ;
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63 #endif
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64 #ifdef NANOX_PIXEL_0888
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65 ptr += 2 ;
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66 #endif
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67 #ifdef NANOX_PIXEL_888
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68 ++ ptr ;
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69 #endif
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70 (* ptr) = GammaRamp_B [(* ptr)] ;
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71 ++ ptr ;
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72 (* ptr) = GammaRamp_G [(* ptr)] ;
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73 ++ ptr ;
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74 (* ptr) = GammaRamp_R [(* ptr)] ;
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75 }
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76 }
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77 src = SDL_Image + y * yinc + x * xinc ;
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78 }
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79 #endif // apply Gamma table
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80
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81 for (j = h; j > 0; -- j, src += yinc, dest += destinc) {
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82 memcpy (dest, src, destinc) ;
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83 }
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84
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85 if (currently_fullscreen) {
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86 GrArea (FSwindow, SDL_GC, x + OffsetX, y + OffsetY, w, h, Image_buff,
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87 pixel_type) ;
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88 } else {
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89 GrArea (SDL_Window, SDL_GC, x, y, w, h, Image_buff, pixel_type) ;
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90 }
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91 }
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92
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93 Dprintf ("leave NX_NormalUpdate\n") ;
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94 }
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95
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96 int NX_SetupImage (_THIS, SDL_Surface * screen)
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97 {
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98 int size = screen -> h * screen -> pitch ;
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99
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100 Dprintf ("enter NX_SetupImage\n") ;
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101
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102 screen -> pixels = (void *) malloc (size) ;
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103 Image_buff = (unsigned char *) malloc (size) ;
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104 if (screen -> pixels == NULL || Image_buff == NULL) {
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105 free (screen -> pixels) ;
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106 free (Image_buff) ;
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107 SDL_OutOfMemory () ;
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108 return -1 ;
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109 }
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110
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111 SDL_Image = (unsigned char *) screen -> pixels ;
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112
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113 this -> UpdateRects = NX_NormalUpdate ;
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114
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115 Dprintf ("leave NX_SetupImage\n") ;
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116 return 0 ;
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117 }
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118
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119 void NX_DestroyImage (_THIS, SDL_Surface * screen)
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120 {
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121 Dprintf ("enter NX_DestroyImage\n") ;
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122
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123 if (SDL_Image) free (SDL_Image) ;
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124 if (Image_buff) free (Image_buff) ;
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125 if (screen) screen -> pixels = NULL ;
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126
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127 Dprintf ("leave NX_DestroyImage\n") ;
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128 }
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129
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130 int NX_ResizeImage (_THIS, SDL_Surface * screen, Uint32 flags)
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131 {
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132 int retval ;
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133 GR_SCREEN_INFO si ;
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134
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135 Dprintf ("enter NX_ResizeImage\n") ;
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136
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137 NX_DestroyImage (this, screen) ;
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138 retval = NX_SetupImage (this, screen) ;
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139
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140 GrGetScreenInfo (& si) ;
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141 OffsetX = (si.cols - screen -> w) / 2 ;
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142 OffsetY = (si.rows - screen -> h) / 2 ;
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143
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144 Dprintf ("leave NX_ResizeImage\n") ;
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145 return retval ;
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146 }
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147
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148 void NX_RefreshDisplay (_THIS)
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149 {
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150 Dprintf ("enter NX_RefreshDisplay\n") ;
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151
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152 // Don't refresh a display that doesn't have an image (like GL)
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153 if (! SDL_Image) {
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154 return;
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155 }
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156
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157 if (currently_fullscreen) {
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158 GrArea (FSwindow, SDL_GC, OffsetX, OffsetY, this -> screen -> w,
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159 this -> screen -> h, SDL_Image, pixel_type) ;
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160 } else {
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161 GrArea (SDL_Window, SDL_GC, 0, 0, this -> screen -> w,
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162 this -> screen -> h, SDL_Image, pixel_type) ;
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163 }
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164
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165 Dprintf ("leave NX_RefreshDisplay\n") ;
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166 }