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annotate src/video/photon/SDL_ph_modes.c @ 1698:412149a1c756 SDL-1.3

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Renamed, per Mike's comment on bug #157
author Sam Lantinga <slouken@libsdl.org>
date Wed, 21 Jun 2006 08:25:17 +0000
parents 4da1ee79c9af
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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 #include "SDL_ph_modes_c.h"
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25
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26 static PgVideoModeInfo_t mode_info;
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27 static PgVideoModes_t mode_list;
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28
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29 /* The current list of available video modes */
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30 SDL_Rect SDL_modelist[PH_MAX_VIDEOMODES];
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31 SDL_Rect *SDL_modearray[PH_MAX_VIDEOMODES];
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32
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33 static int
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34 compare_modes_by_res(const void *mode1, const void *mode2)
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35 {
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36 PgVideoModeInfo_t mode1_info;
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37 PgVideoModeInfo_t mode2_info;
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38
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39 if (PgGetVideoModeInfo(*(unsigned short *) mode1, &mode1_info) < 0) {
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40 return 0;
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41 }
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42
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43 if (PgGetVideoModeInfo(*(unsigned short *) mode2, &mode2_info) < 0) {
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44 return 0;
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45 }
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46
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47 if (mode1_info.width == mode2_info.width) {
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48 return mode2_info.height - mode1_info.height;
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49 } else {
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50 return mode2_info.width - mode1_info.width;
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51 }
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52 }
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53
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54 SDL_Rect **
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55 ph_ListModes(_THIS, SDL_PixelFormat * format, Uint32 flags)
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56 {
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57 int i = 0;
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58 int j = 0;
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59 SDL_Rect Amodelist[PH_MAX_VIDEOMODES];
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60
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61 for (i = 0; i < PH_MAX_VIDEOMODES; i++) {
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62 SDL_modearray[i] = &SDL_modelist[i];
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63 }
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64
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65 if (PgGetVideoModeList(&mode_list) < 0) {
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66 SDL_SetError
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67 ("ph_ListModes(): PgGetVideoModeList() function failed !\n");
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68 return NULL;
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69 }
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70
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71 mode_info.bits_per_pixel = 0;
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72
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73 for (i = 0; i < mode_list.num_modes; i++) {
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74 if (PgGetVideoModeInfo(mode_list.modes[i], &mode_info) < 0) {
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75 SDL_SetError
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76 ("ph_ListModes(): PgGetVideoModeInfo() function failed on mode: 0x%X.\n",
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77 mode_list.modes[i]);
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78 return NULL;
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79 }
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80 if (mode_info.bits_per_pixel == format->BitsPerPixel) {
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81 Amodelist[j].w = mode_info.width;
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82 Amodelist[j].h = mode_info.height;
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83 Amodelist[j].x = 0;
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84 Amodelist[j].y = 0;
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85 j++;
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86 }
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87 }
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88
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89 /* reorder biggest for smallest, assume width dominates */
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90
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91 for (i = 0; i < j; i++) {
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92 SDL_modelist[i].w = Amodelist[j - i - 1].w;
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93 SDL_modelist[i].h = Amodelist[j - i - 1].h;
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94 SDL_modelist[i].x = Amodelist[j - i - 1].x;
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95 SDL_modelist[i].y = Amodelist[j - i - 1].y;
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96 }
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97 SDL_modearray[j] = NULL;
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98
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99 return SDL_modearray;
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100 }
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101
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102 void
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103 ph_FreeVideoModes(_THIS)
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104 {
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105 return;
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106 }
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107
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108 /* return the mode associated with width, height and bpp */
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109 /* if there is no mode then zero is returned */
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110 int
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111 ph_GetVideoMode(int width, int height, int bpp)
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112 {
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113 int i;
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114 int modestage = 0;
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115 int closestmode = 0;
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116
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117 if (PgGetVideoModeList(&mode_list) < 0) {
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118 return -1;
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119 }
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120
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121 /* special case for the double-sized 320x200 mode */
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122 if ((width == 640) && (height == 400)) {
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123 modestage = 1;
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124 }
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125
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126 /* search list for exact match */
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127 for (i = 0; i < mode_list.num_modes; i++) {
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128 if (PgGetVideoModeInfo(mode_list.modes[i], &mode_info) < 0) {
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129 return 0;
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130 }
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131
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132 if ((mode_info.width == width) && (mode_info.height == height) &&
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133 (mode_info.bits_per_pixel == bpp)) {
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134 return mode_list.modes[i];
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135 } else {
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136 if ((modestage) && (mode_info.width == width)
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137 && (mode_info.height == height + 80)
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138 && (mode_info.bits_per_pixel == bpp)) {
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139 modestage = 2;
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140 closestmode = mode_list.modes[i];
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141 }
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142 }
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143 }
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144
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145 /* if we are here, then no 640x400xbpp mode found and we'll emulate it via 640x480xbpp mode */
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146 if (modestage == 2) {
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147 return closestmode;
309
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148 }
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149
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150 return (i == mode_list.num_modes) ? 0 : mode_list.modes[i];
0
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151 }
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152
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153 /* return the mode associated with width, height and bpp */
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154 /* if requested bpp is not found the mode with closest bpp is returned */
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155 int
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156 get_mode_any_format(int width, int height, int bpp)
0
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157 {
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158 int i, closest, delta, min_delta;
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159
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160 if (PgGetVideoModeList(&mode_list) < 0) {
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161 return -1;
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162 }
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163
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164 SDL_qsort(mode_list.modes, mode_list.num_modes, sizeof(unsigned short),
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165 compare_modes_by_res);
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166
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167 for (i = 0; i < mode_list.num_modes; i++) {
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168 if (PgGetVideoModeInfo(mode_list.modes[i], &mode_info) < 0) {
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169 return 0;
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170 }
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171 if ((mode_info.width == width) && (mode_info.height == height)) {
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172 break;
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173 }
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174 }
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175
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176 if (i < mode_list.num_modes) {
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177 /* get closest bpp */
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178 closest = i++;
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179 if (mode_info.bits_per_pixel == bpp) {
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180 return mode_list.modes[closest];
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181 }
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182
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183 min_delta = abs(mode_info.bits_per_pixel - bpp);
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184
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185 while (1) {
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186 if (PgGetVideoModeInfo(mode_list.modes[i], &mode_info) < 0) {
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187 return 0;
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188 }
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189
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190 if ((mode_info.width != width)
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191 || (mode_info.height != height)) {
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192 break;
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193 } else {
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194 if (mode_info.bits_per_pixel == bpp) {
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195 closest = i;
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196 break;
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197 } else {
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198 delta = abs(mode_info.bits_per_pixel - bpp);
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199 if (delta < min_delta) {
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200 closest = i;
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201 min_delta = delta;
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202 }
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203 i++;
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204 }
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205 }
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206 }
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207 return mode_list.modes[closest];
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208 }
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209
309
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210 return 0;
0
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211 }
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212
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213 int
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214 ph_ToggleFullScreen(_THIS, int on)
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215 {
663
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216 return -1;
0
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217 }
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218
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219 int
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220 ph_EnterFullScreen(_THIS, SDL_Surface * screen, int fmode)
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221 {
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222 PgDisplaySettings_t settings;
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223 int mode;
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224 char *refreshrate;
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225 int refreshratenum;
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226
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227 if (!currently_fullscreen) {
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228 /* Get the video mode and set it */
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229 if (screen->flags & SDL_ANYFORMAT) {
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diff changeset
230 if ((mode =
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231 get_mode_any_format(screen->w, screen->h,
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232 screen->format->BitsPerPixel)) == 0) {
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233 SDL_SetError
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234 ("ph_EnterFullScreen(): can't find appropriate video mode !\n");
663
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235 return 0;
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236 }
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237 } else {
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238 if ((mode =
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239 ph_GetVideoMode(screen->w, screen->h,
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240 screen->format->BitsPerPixel)) == 0) {
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241 SDL_SetError
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242 ("ph_EnterFullScreen(): can't find appropriate video mode !\n");
663
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243 return 0;
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244 }
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245 if (PgGetVideoModeInfo(mode, &mode_info) < 0) {
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246 SDL_SetError
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247 ("ph_EnterFullScreen(): can't get video mode capabilities !\n");
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248 return 0;
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249 }
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250 if (mode_info.height != screen->h) {
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251 if ((mode_info.height == 480) && (screen->h == 400)) {
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252 videomode_emulatemode = 1;
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253 }
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254 } else {
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255 videomode_emulatemode = 0;
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256 }
663
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257 }
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258
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259 /* save old video mode caps */
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260 PgGetVideoMode(&settings);
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diff changeset
261 old_video_mode = settings.mode;
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diff changeset
262 old_refresh_rate = settings.refresh;
663
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263
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diff changeset
264 /* setup new video mode */
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265 settings.mode = mode;
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266 settings.refresh = 0;
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267 settings.flags = 0;
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268
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269 refreshrate = SDL_getenv("SDL_PHOTON_FULLSCREEN_REFRESH");
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270 if (refreshrate != NULL) {
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271 if (SDL_sscanf(refreshrate, "%d", &refreshratenum) == 1) {
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272 settings.refresh = refreshratenum;
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273 }
821
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274 }
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275
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276 if (PgSetVideoMode(&settings) < 0) {
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277 SDL_SetError
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278 ("ph_EnterFullScreen(): PgSetVideoMode() call failed !\n");
663
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279 return 0;
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280 }
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281
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282 if (this->screen) {
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283 if (this->screen->flags & SDL_INTERNALOPENGL) {
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284 #if !SDL_VIDEO_OPENGL || (_NTO_VERSION < 630)
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285 return 0; /* 6.3.0 */
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286 #endif
315
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287 }
309
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288 }
315
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289
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290 if (fmode == 0) {
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291 if (OCImage.direct_context == NULL) {
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292 OCImage.direct_context =
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293 (PdDirectContext_t *) PdCreateDirectContext();
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294 if (!OCImage.direct_context) {
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295 SDL_SetError
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296 ("ph_EnterFullScreen(): Can't create direct context !\n");
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297 ph_LeaveFullScreen(this);
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298 return 0;
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299 }
663
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300 }
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301 OCImage.oldDC = PdDirectStart(OCImage.direct_context);
315
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302 }
0
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303
315
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304 currently_fullscreen = 1;
309
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305 }
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306 PgFlush();
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307
309
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308 return 1;
0
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309 }
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310
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311 int
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312 ph_LeaveFullScreen(_THIS)
0
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313 {
692
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314 PgDisplaySettings_t oldmode_settings;
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315
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316 if (currently_fullscreen) {
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317 if ((this->screen) && (this->screen->flags & SDL_INTERNALOPENGL)) {
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318 #if !SDL_VIDEO_OPENGL || (_NTO_VERSION < 630)
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319 return 0;
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320 #endif
309
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321 }
910
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322
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323 /* release routines starts here */
309
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324 {
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325 if (OCImage.direct_context) {
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326 PdDirectStop(OCImage.direct_context);
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327 PdReleaseDirectContext(OCImage.direct_context);
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328 OCImage.direct_context = NULL;
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329 }
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330 if (OCImage.oldDC) {
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331 PhDCSetCurrent(OCImage.oldDC);
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332 OCImage.oldDC = NULL;
663
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333 }
571
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diff changeset
334
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335 currently_fullscreen = 0;
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336
309
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337 /* Restore old video mode */
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338 if (old_video_mode != -1) {
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339 oldmode_settings.mode = (unsigned short) old_video_mode;
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340 oldmode_settings.refresh = (unsigned short) old_refresh_rate;
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341 oldmode_settings.flags = 0;
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diff changeset
342
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343 if (PgSetVideoMode(&oldmode_settings) < 0) {
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344 SDL_SetError
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345 ("Ph_LeaveFullScreen(): PgSetVideoMode() function failed !\n");
571
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346 return 0;
309
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diff changeset
347 }
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diff changeset
348 }
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diff changeset
349
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350 old_video_mode = -1;
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351 old_refresh_rate = -1;
309
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diff changeset
352 }
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353 }
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diff changeset
354 return 1;
0
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diff changeset
355 }
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356
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diff changeset
357 /* vi: set ts=4 sw=4 expandtab: */