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annotate src/video/photon/SDL_ph_modes.c @ 648:12a21d82a060

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Exposed SDL_LoadObject(), SDL_LoadFunction(), and SDL_UnloadObject() APIs
author Sam Lantinga <slouken@libsdl.org>
date Thu, 10 Jul 2003 07:46:19 +0000
parents 8e3ce997621c
children 8bedd6d61642
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, 1998, 1999, 2000, 2001, 2002 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 Library General Public
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7 License as published by the Free Software Foundation; either
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8 version 2 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 Library 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 Library General Public
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16 License along with this library; if not, write to the Free
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17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 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 #ifdef SAVE_RCSID
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24 static char rcsid =
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25 "@(#) $Id$";
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26 #endif
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27
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28 #include "SDL_ph_modes_c.h"
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29
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30 static unsigned long key1, key2;
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31 static PgVideoModeInfo_t mode_info;
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32 static PgVideoModes_t mode_list;
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33
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34 /* The current list of available video modes */
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35 SDL_Rect SDL_modelist[PH_MAX_VIDEOMODES];
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36 SDL_Rect* SDL_modearray[PH_MAX_VIDEOMODES];
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37
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38 static int compare_modes_by_res(const void* mode1, const void* mode2)
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39 {
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40 if (PgGetVideoModeInfo(*(unsigned short*)mode1, &mode_info) < 0)
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41 {
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42 fprintf(stderr,"error: In compare_modes_by_res PgGetVideoModeInfo failed on mode: 0x%x\n",
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43 *(unsigned short*)mode1);
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44 return 0;
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45 }
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47 key1 = mode_info.width * mode_info.height;
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48
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49 if (PgGetVideoModeInfo(*(unsigned short*)mode2, &mode_info) < 0)
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50 {
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51 fprintf(stderr,"error: In compare_modes_by_res PgGetVideoModeInfo failed on mode: 0x%x\n",
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52 *(unsigned short*)mode2);
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53 return 0;
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54 }
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55
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56 key2 = mode_info.width * mode_info.height;
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57
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58 if (key1 > key2)
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59 return 1;
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60 else if (key1 == key2)
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61 return 0;
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62 else
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63 return -1;
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64 }
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65
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66 SDL_Rect **ph_ListModes(_THIS, SDL_PixelFormat *format, Uint32 flags)
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67 {
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68 int i = 0;
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69 int j = 0;
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70 SDL_Rect Amodelist[PH_MAX_VIDEOMODES];
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72 for (i=0; i<PH_MAX_VIDEOMODES; i++)
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73 {
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74 SDL_modearray[i]=&SDL_modelist[i];
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75 }
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76
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77 if (PgGetVideoModeList( &mode_list ) < 0)
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78 {
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79 fprintf(stderr,"error: PgGetVideoModeList failed\n");
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80 return NULL;
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81 }
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82
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83 mode_info.bits_per_pixel = 0;
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84
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85 for (i=0; i < mode_list.num_modes; i++)
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86 {
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87 if (PgGetVideoModeInfo(mode_list.modes[i], &mode_info) < 0)
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88 {
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89 fprintf(stderr,"error: PgGetVideoModeInfo failed on mode: 0x%x\n", mode_list.modes[i]);
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90 return NULL;
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91 }
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92 if(mode_info.bits_per_pixel == format->BitsPerPixel)
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93 {
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94 Amodelist[j].w = mode_info.width;
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95 Amodelist[j].h = mode_info.height;
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96 Amodelist[j].x = 0;
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97 Amodelist[j].y = 0;
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98 j++;
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99 }
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100 }
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101
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102 /* reorder biggest for smallest, assume width dominates */
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103
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104 for(i=0; i<j; i++)
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105 {
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106 SDL_modelist[i].w = Amodelist[j - i -1].w;
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107 SDL_modelist[i].h = Amodelist[j - i -1].h;
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108 SDL_modelist[i].x = Amodelist[j - i -1].x;
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109 SDL_modelist[i].y = Amodelist[j - i -1].y;
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110 }
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111 SDL_modearray[j]=NULL;
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112
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113 return SDL_modearray;
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114 }
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115
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116 void ph_FreeVideoModes(_THIS)
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117 {
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118 return;
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119 }
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120
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121 /* return the mode associated with width, height and bpp */
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122 /* if there is no mode then zero is returned */
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123 int get_mode(int width, int height, int bpp)
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124 {
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125 int i;
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126
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127 if(width<640)
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128 {
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129 width=640;
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130 }
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131 if(height<480)
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132 {
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133 height=480;
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134 }
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135
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136 if (PgGetVideoModeList(&mode_list) < 0)
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137 {
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138 fprintf(stderr,"error: PgGetVideoModeList failed\n");
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139 return -1;
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140 }
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141
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142 /* search list for exact match */
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143 for (i=0;i<mode_list.num_modes;i++)
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144 {
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145 if (PgGetVideoModeInfo(mode_list.modes[i], &mode_info) < 0)
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146 {
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147 fprintf(stderr,"error: PgGetVideoModeInfo failed\n");
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148 return 0;
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149 }
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150
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151 if ((mode_info.width == width) &&
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152 (mode_info.height == height) &&
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153 (mode_info.bits_per_pixel == bpp))
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154 {
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155 return mode_list.modes[i];
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156 }
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157 }
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158
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159 return (i == mode_list.num_modes) ? 0 : mode_list.modes[i];
0
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160 }
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161
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162 int get_mode_any_format(int width, int height, int bpp)
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163 /* return the mode associated with width, height and bpp */
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164 /* if requested bpp is not found the mode with closest bpp is returned */
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165 {
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166 int i, closest, delta, min_delta;
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167
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168 if (PgGetVideoModeList( &mode_list ) < 0)
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169 {
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170 fprintf(stderr,"error: PgGetVideoModeList failed\n");
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171 return -1;
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172 }
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173
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174 qsort(mode_list.modes, mode_list.num_modes, sizeof(unsigned short), compare_modes_by_res);
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175 for(i=0;i<mode_list.num_modes;i++)
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176 {
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177 if (PgGetVideoModeInfo(mode_list.modes[i], &mode_info) < 0)
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178 {
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179 fprintf(stderr,"error: PgGetVideoModeInfo failed\n");
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180 return 0;
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181 }
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182 if ((mode_info.width == width) &&
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183 (mode_info.height == height))
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184 break;
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185 }
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186 if (i<mode_list.num_modes)
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187 {
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188 /* get closest bpp */
0
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189 closest = i++;
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190 if (mode_info.bits_per_pixel == bpp)
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191 return mode_list.modes[closest];
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192
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193 min_delta = abs(mode_info.bits_per_pixel - bpp);
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194 while(1)
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195 {
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196 if (PgGetVideoModeInfo(mode_list.modes[i], &mode_info) < 0)
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197 {
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198 fprintf(stderr,"error: PgGetVideoModeInfo failed\n");
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199 return 0;
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200 }
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201
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202 if ((mode_info.width != width) ||
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203 (mode_info.height != height))
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204 break;
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205 else if (mode_info.bits_per_pixel == bpp)
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206 {
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207 closest = i;
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208 break;
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209 }
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diff changeset
210 else
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211 {
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212 delta = abs(mode_info.bits_per_pixel - bpp);
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213 if (delta < min_delta)
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214 {
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215 closest = i;
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diff changeset
216 min_delta = delta;
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217 }
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218 i++;
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219 }
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220 }
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221 return mode_list.modes[closest];
0
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222 }
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223 else
309
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224 return 0;
0
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225 }
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226
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227 int ph_ToggleFullScreen(_THIS, int on)
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228 {
309
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229 if (currently_fullscreen)
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230 {
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231 return ph_LeaveFullScreen(this);
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232 }
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233 else
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234 {
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235 return ph_EnterFullScreen(this);
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236 }
0
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237
309
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238 return 0;
0
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239 }
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240
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diff changeset
241 int ph_EnterFullScreen(_THIS)
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242 {
309
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diff changeset
243 if (!currently_fullscreen)
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244 {
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diff changeset
245 if (this->screen)
309
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diff changeset
246 {
315
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diff changeset
247 if ((this->screen->flags & SDL_OPENGL)==SDL_OPENGL)
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diff changeset
248 {
309
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diff changeset
249 #ifdef HAVE_OPENGL
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diff changeset
250 #endif /* HAVE_OPENGL */
315
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diff changeset
251 return 0;
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parents: 309
diff changeset
252 }
309
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diff changeset
253 }
315
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diff changeset
254
571
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diff changeset
255 if (OCImage.direct_context==NULL)
309
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diff changeset
256 {
315
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diff changeset
257 OCImage.direct_context=(PdDirectContext_t*)PdCreateDirectContext();
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diff changeset
258 }
0
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diff changeset
259
315
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parents: 309
diff changeset
260 if (!OCImage.direct_context)
3333b6e68289 Date: Sat, 23 Mar 2002 13:53:37 +0200
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parents: 309
diff changeset
261 {
571
8e3ce997621c Date: Thu, 16 Jan 2003 13:48:31 +0200
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diff changeset
262 fprintf(stderr, "ph_EnterFullScreen(): Can't create direct context !\n");
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parents: 315
diff changeset
263 return 0;
315
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diff changeset
264 }
0
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diff changeset
265
571
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diff changeset
266 OCImage.oldDC=PdDirectStart(OCImage.direct_context);
0
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diff changeset
267
315
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diff changeset
268 currently_fullscreen = 1;
309
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diff changeset
269 }
0
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diff changeset
270
309
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diff changeset
271 return 1;
0
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parents:
diff changeset
272 }
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parents:
diff changeset
273
315
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diff changeset
274 int ph_LeaveFullScreen(_THIS)
0
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diff changeset
275 {
309
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diff changeset
276 PgDisplaySettings_t mymode_settings;
0
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277
309
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diff changeset
278 if (currently_fullscreen)
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diff changeset
279 {
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diff changeset
280 if ((this->screen->flags & SDL_OPENGL)==SDL_OPENGL)
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parents: 297
diff changeset
281 {
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diff changeset
282 #ifdef HAVE_OPENGL
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diff changeset
283 #endif /* HAVE_OPENGL */
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diff changeset
284 return 0;
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diff changeset
285 }
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diff changeset
286 else
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diff changeset
287 {
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diff changeset
288 PdDirectStop(OCImage.direct_context);
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289 PdReleaseDirectContext(OCImage.direct_context);
571
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parents: 315
diff changeset
290 PhDCSetCurrent(OCImage.oldDC);
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parents: 315
diff changeset
291
315
3333b6e68289 Date: Sat, 23 Mar 2002 13:53:37 +0200
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diff changeset
292 currently_fullscreen=0;
0
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diff changeset
293
309
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diff changeset
294 /* Restore old video mode */
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diff changeset
295 if (old_video_mode != -1)
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parents: 297
diff changeset
296 {
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diff changeset
297 mymode_settings.mode= (unsigned short) old_video_mode;
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diff changeset
298 mymode_settings.refresh= (unsigned short) old_refresh_rate;
315
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parents: 309
diff changeset
299 mymode_settings.flags= 0;
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diff changeset
300
309
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diff changeset
301 if (PgSetVideoMode(&mymode_settings) < 0)
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parents: 297
diff changeset
302 {
571
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diff changeset
303 fprintf(stderr, "Ph_LeaveFullScreen(): PgSetVideoMode failed !\n");
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parents: 315
diff changeset
304 return 0;
309
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diff changeset
305 }
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parents: 297
diff changeset
306 }
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diff changeset
307
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diff changeset
308 old_video_mode=-1;
315
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parents: 309
diff changeset
309 old_refresh_rate=-1;
309
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parents: 297
diff changeset
310 }
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parents: 297
diff changeset
311
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parents: 297
diff changeset
312 }
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parents: 297
diff changeset
313 return 1;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
314 }