Mercurial > sdl-ios-xcode

annotate include/SDL_pixels.h @ 2427:32b9909db651 gsoc2008_iphone

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changed macro MAX_G_FORCE to SDL_IPHONE_MAX_GFORCE and moved it to the SDL_config_iphoneos.h file. This should allow users to convert between the Sint16 returned by polling the joystick and units of g-force, which better describe what is going on with the iPhone (and are what the iPhone OS actually gives you). This conversion wouldn't be necessary except that we'd need floating point to store everything as g-force.
author Holmes Futrell <hfutrell@umail.ucsb.edu>
date Fri, 15 Aug 2008 00:46:58 +0000
parents 12ea0fdc0df2
children 24a6b3588eac
rev   line source
1895
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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
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23 /**
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24 * \file SDL_pixels.h
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25 *
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26 * Header for the enumerated pixel format definitions
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27 */
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28
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29 #ifndef _SDL_pixels_h
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30 #define _SDL_pixels_h
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31
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32 #include "begin_code.h"
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33 /* Set up for C function definitions, even when using C++ */
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34 #ifdef __cplusplus
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35 /* *INDENT-OFF* */
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36 extern "C" {
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37 /* *INDENT-ON* */
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38 #endif
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39
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40 /* Transparency definitions: These define alpha as the opacity of a surface */
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41 #define SDL_ALPHA_OPAQUE 255
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42 #define SDL_ALPHA_TRANSPARENT 0
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43
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44 enum
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45 { /* Pixel type */
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46 SDL_PIXELTYPE_UNKNOWN,
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47 SDL_PIXELTYPE_INDEX1,
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48 SDL_PIXELTYPE_INDEX4,
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49 SDL_PIXELTYPE_INDEX8,
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50 SDL_PIXELTYPE_PACKED8,
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51 SDL_PIXELTYPE_PACKED16,
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52 SDL_PIXELTYPE_PACKED32,
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53 SDL_PIXELTYPE_ARRAYU8,
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54 SDL_PIXELTYPE_ARRAYU16,
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55 SDL_PIXELTYPE_ARRAYU32,
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56 SDL_PIXELTYPE_ARRAYF16,
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57 SDL_PIXELTYPE_ARRAYF32
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58 };
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59
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60 enum
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61 { /* bitmap pixel order, high bit -> low bit */
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62 SDL_BITMAPORDER_NONE,
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63 SDL_BITMAPORDER_4321,
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64 SDL_BITMAPORDER_1234
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65 };
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66 enum
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67 { /* packed component order, high bit -> low bit */
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68 SDL_PACKEDORDER_NONE,
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69 SDL_PACKEDORDER_XRGB,
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70 SDL_PACKEDORDER_RGBX,
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71 SDL_PACKEDORDER_ARGB,
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72 SDL_PACKEDORDER_RGBA,
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73 SDL_PACKEDORDER_XBGR,
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74 SDL_PACKEDORDER_BGRX,
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75 SDL_PACKEDORDER_ABGR,
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76 SDL_PACKEDORDER_BGRA
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77 };
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78 enum
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79 { /* array component order, low byte -> high byte */
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80 SDL_ARRAYORDER_NONE,
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81 SDL_ARRAYORDER_RGB,
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82 SDL_ARRAYORDER_RGBA,
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83 SDL_ARRAYORDER_ARGB,
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84 SDL_ARRAYORDER_BGR,
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85 SDL_ARRAYORDER_BGRA,
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86 SDL_ARRAYORDER_ABGR
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87 };
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88
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89 enum
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90 { /* Packed component layout */
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91 SDL_PACKEDLAYOUT_NONE,
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92 SDL_PACKEDLAYOUT_332,
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93 SDL_PACKEDLAYOUT_4444,
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94 SDL_PACKEDLAYOUT_1555,
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95 SDL_PACKEDLAYOUT_5551,
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96 SDL_PACKEDLAYOUT_565,
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97 SDL_PACKEDLAYOUT_8888,
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98 SDL_PACKEDLAYOUT_2101010,
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99 SDL_PACKEDLAYOUT_1010102
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100 };
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101
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102 #define SDL_DEFINE_PIXELFOURCC(A, B, C, D) \
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103 ((A) | ((B) << 8) | ((C) << 16) | ((D) << 24))
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104
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105 #define SDL_DEFINE_PIXELFORMAT(type, order, layout, bits, bytes) \
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106 ((1 << 31) | ((type) << 24) | ((order) << 20) | ((layout) << 16) | \
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107 ((bits) << 8) | ((bytes) << 0))
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108
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109 #define SDL_PIXELTYPE(X) (((X) >> 24) & 0x0F)
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110 #define SDL_PIXELORDER(X) (((X) >> 20) & 0x0F)
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111 #define SDL_PIXELLAYOUT(X) (((X) >> 16) & 0x0F)
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112 #define SDL_BITSPERPIXEL(X) (((X) >> 8) & 0xFF)
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113 #define SDL_BYTESPERPIXEL(X) (((X) >> 0) & 0xFF)
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114
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115 #define SDL_ISPIXELFORMAT_INDEXED(format) \
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116 ((SDL_PIXELTYPE(format) == SDL_PIXELTYPE_INDEX1) || \
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117 (SDL_PIXELTYPE(format) == SDL_PIXELTYPE_INDEX4) || \
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118 (SDL_PIXELTYPE(format) == SDL_PIXELTYPE_INDEX8))
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119
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120 #define SDL_ISPIXELFORMAT_FOURCC(format) \
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121 ((format) && !((format) & 0x80000000))
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122
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123 enum
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124 {
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125 SDL_PIXELFORMAT_UNKNOWN,
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126 SDL_PIXELFORMAT_INDEX1LSB =
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127 SDL_DEFINE_PIXELFORMAT(SDL_PIXELTYPE_INDEX1, SDL_BITMAPORDER_1234, 0,
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128 1, 0),
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129 SDL_PIXELFORMAT_INDEX1MSB =
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130 SDL_DEFINE_PIXELFORMAT(SDL_PIXELTYPE_INDEX1, SDL_BITMAPORDER_4321, 0,
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131 1, 0),
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132 SDL_PIXELFORMAT_INDEX4LSB =
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133 SDL_DEFINE_PIXELFORMAT(SDL_PIXELTYPE_INDEX4, SDL_BITMAPORDER_1234, 0,
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134 2, 0),
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135 SDL_PIXELFORMAT_INDEX4MSB =
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136 SDL_DEFINE_PIXELFORMAT(SDL_PIXELTYPE_INDEX4, SDL_BITMAPORDER_4321, 0,
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137 2, 0),
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138 SDL_PIXELFORMAT_INDEX8 =
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139 SDL_DEFINE_PIXELFORMAT(SDL_PIXELTYPE_INDEX8, 0, 0, 8, 1),
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140 SDL_PIXELFORMAT_RGB332 =
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141 SDL_DEFINE_PIXELFORMAT(SDL_PIXELTYPE_PACKED8, SDL_PACKEDORDER_XRGB,
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142 SDL_PACKEDLAYOUT_332, 8, 1),
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143 SDL_PIXELFORMAT_RGB444 =
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144 SDL_DEFINE_PIXELFORMAT(SDL_PIXELTYPE_PACKED16, SDL_PACKEDORDER_XRGB,
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145 SDL_PACKEDLAYOUT_4444, 12, 2),
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146 SDL_PIXELFORMAT_RGB555 =
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147 SDL_DEFINE_PIXELFORMAT(SDL_PIXELTYPE_PACKED16, SDL_PACKEDORDER_XRGB,
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148 SDL_PACKEDLAYOUT_1555, 15, 2),
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149 SDL_PIXELFORMAT_ARGB4444 =
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150 SDL_DEFINE_PIXELFORMAT(SDL_PIXELTYPE_PACKED16, SDL_PACKEDORDER_ARGB,
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151 SDL_PACKEDLAYOUT_4444, 16, 2),
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152 SDL_PIXELFORMAT_ARGB1555 =
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153 SDL_DEFINE_PIXELFORMAT(SDL_PIXELTYPE_PACKED16, SDL_PACKEDORDER_ARGB,
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154 SDL_PACKEDLAYOUT_1555, 16, 2),
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155 SDL_PIXELFORMAT_RGB565 =
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156 SDL_DEFINE_PIXELFORMAT(SDL_PIXELTYPE_PACKED16, SDL_PACKEDORDER_XRGB,
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157 SDL_PACKEDLAYOUT_565, 16, 2),
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158 SDL_PIXELFORMAT_RGB24 =
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159 SDL_DEFINE_PIXELFORMAT(SDL_PIXELTYPE_ARRAYU8, SDL_ARRAYORDER_RGB, 0,
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160 24, 3),
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161 SDL_PIXELFORMAT_BGR24 =
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162 SDL_DEFINE_PIXELFORMAT(SDL_PIXELTYPE_ARRAYU8, SDL_ARRAYORDER_BGR, 0,
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163 24, 3),
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164 SDL_PIXELFORMAT_RGB888 =
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165 SDL_DEFINE_PIXELFORMAT(SDL_PIXELTYPE_PACKED32, SDL_PACKEDORDER_XRGB,
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166 SDL_PACKEDLAYOUT_8888, 24, 4),
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167 SDL_PIXELFORMAT_BGR888 =
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168 SDL_DEFINE_PIXELFORMAT(SDL_PIXELTYPE_PACKED32, SDL_PACKEDORDER_XBGR,
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169 SDL_PACKEDLAYOUT_8888, 24, 4),
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170 SDL_PIXELFORMAT_ARGB8888 =
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171 SDL_DEFINE_PIXELFORMAT(SDL_PIXELTYPE_PACKED32, SDL_PACKEDORDER_ARGB,
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172 SDL_PACKEDLAYOUT_8888, 32, 4),
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173 SDL_PIXELFORMAT_RGBA8888 =
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174 SDL_DEFINE_PIXELFORMAT(SDL_PIXELTYPE_PACKED32, SDL_PACKEDORDER_RGBA,
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175 SDL_PACKEDLAYOUT_8888, 32, 4),
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176 SDL_PIXELFORMAT_ABGR8888 =
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177 SDL_DEFINE_PIXELFORMAT(SDL_PIXELTYPE_PACKED32, SDL_PACKEDORDER_ABGR,
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178 SDL_PACKEDLAYOUT_8888, 32, 4),
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179 SDL_PIXELFORMAT_BGRA8888 =
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180 SDL_DEFINE_PIXELFORMAT(SDL_PIXELTYPE_PACKED32, SDL_PACKEDORDER_BGRA,
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181 SDL_PACKEDLAYOUT_8888, 32, 4),
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182 SDL_PIXELFORMAT_ARGB2101010 =
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183 SDL_DEFINE_PIXELFORMAT(SDL_PIXELTYPE_PACKED32, SDL_PACKEDORDER_ARGB,
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184 SDL_PACKEDLAYOUT_2101010, 32, 4),
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185
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186 SDL_PIXELFORMAT_YV12 = /* Planar mode: Y + V + U (3 planes) */
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187 SDL_DEFINE_PIXELFOURCC('Y', 'V', '1', '2'),
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188 SDL_PIXELFORMAT_IYUV = /* Planar mode: Y + U + V (3 planes) */
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189 SDL_DEFINE_PIXELFOURCC('I', 'Y', 'U', 'V'),
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190 SDL_PIXELFORMAT_YUY2 = /* Packed mode: Y0+U0+Y1+V0 (1 plane) */
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191 SDL_DEFINE_PIXELFOURCC('Y', 'U', 'Y', '2'),
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192 SDL_PIXELFORMAT_UYVY = /* Packed mode: U0+Y0+V0+Y1 (1 plane) */
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193 SDL_DEFINE_PIXELFOURCC('U', 'Y', 'V', 'Y'),
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194 SDL_PIXELFORMAT_YVYU = /* Packed mode: Y0+V0+Y1+U0 (1 plane) */
2208
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195 SDL_DEFINE_PIXELFOURCC('Y', 'V', 'Y', 'U')
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196 };
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197
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198 typedef struct SDL_Color
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199 {
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200 Uint8 r;
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201 Uint8 g;
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diff changeset
202 Uint8 b;
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203 Uint8 unused;
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204 } SDL_Color;
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205 #define SDL_Colour SDL_Color
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206
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207 typedef struct SDL_Palette SDL_Palette;
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208 typedef int (*SDL_PaletteChangedFunc) (void *userdata, SDL_Palette * palette);
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209
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210 typedef struct SDL_PaletteWatch
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211 {
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212 SDL_PaletteChangedFunc callback;
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213 void *userdata;
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214 struct SDL_PaletteWatch *next;
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215 } SDL_PaletteWatch;
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216
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217 struct SDL_Palette
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218 {
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219 int ncolors;
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220 SDL_Color *colors;
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221
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222 int refcount;
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223 SDL_PaletteWatch *watch;
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224 };
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225
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226 /* Everything in the pixel format structure is read-only */
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227 typedef struct SDL_PixelFormat
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228 {
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229 SDL_Palette *palette;
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230 Uint8 BitsPerPixel;
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231 Uint8 BytesPerPixel;
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232 Uint8 Rloss;
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233 Uint8 Gloss;
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234 Uint8 Bloss;
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diff changeset
235 Uint8 Aloss;
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236 Uint8 Rshift;
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diff changeset
237 Uint8 Gshift;
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238 Uint8 Bshift;
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239 Uint8 Ashift;
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240 Uint32 Rmask;
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241 Uint32 Gmask;
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242 Uint32 Bmask;
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243 Uint32 Amask;
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244 } SDL_PixelFormat;
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245
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246 /**
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247 * \fn SDL_bool SDL_PixelFormatEnumToMasks(Uint32 format, int *bpp, Uint32 * Rmask, Uint32 * Gmask, Uint32 * Bmask, Uint32 * Amask)
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248 *
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249 * \brief Convert one of the enumerated pixel formats to a bpp and RGBA masks.
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250 *
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251 * \return SDL_TRUE, or SDL_FALSE if the conversion wasn't possible.
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252 *
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253 * \sa SDL_MasksToPixelFormatEnum()
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254 */
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255 extern DECLSPEC SDL_bool SDLCALL SDL_PixelFormatEnumToMasks(Uint32 format,
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256 int *bpp,
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257 Uint32 * Rmask,
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258 Uint32 * Gmask,
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259 Uint32 * Bmask,
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260 Uint32 * Amask);
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261
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262 /**
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263 * \fn Uint32 SDL_MasksToPixelFormatEnum(int bpp, Uint32 Rmask, Uint32 Gmask, Uint32 Bmask, Uint32 Amask)
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264 *
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265 * \brief Convert a bpp and RGBA masks to an enumerated pixel format.
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266 *
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267 * \return The pixel format, or SDL_PixelFormat_Unknown if the conversion wasn't possible.
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268 *
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269 * \sa SDL_PixelFormatEnumToMasks()
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270 */
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271 extern DECLSPEC Uint32 SDLCALL SDL_MasksToPixelFormatEnum(int bpp,
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272 Uint32 Rmask,
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273 Uint32 Gmask,
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274 Uint32 Bmask,
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275 Uint32 Amask);
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276
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277 /**
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278 * \fn SDL_Palette *SDL_AllocPalette(int ncolors)
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279 *
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280 * \brief Create a palette structure with the specified number of color entries.
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281 *
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282 * \return A new palette, or NULL if there wasn't enough memory
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283 *
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284 * \note The palette entries are initialized to white.
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285 *
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286 * \sa SDL_FreePalette()
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287 */
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288 extern DECLSPEC SDL_Palette *SDLCALL SDL_AllocPalette(int ncolors);
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289
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290 /**
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291 * \fn int SDL_AddPaletteWatch(SDL_Palette *palette, SDL_PaletteChangedFunc callback, void *userdata)
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292 *
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293 * \brief Add a callback function which is called when the palette changes.
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294 *
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295 * \sa SDL_DelPaletteWatch()
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296 */
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297 extern DECLSPEC int SDLCALL SDL_AddPaletteWatch(SDL_Palette * palette,
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298 SDL_PaletteChangedFunc
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299 callback, void *userdata);
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300
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301 /**
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302 * \fn void SDL_DelPaletteWatch(SDL_Palette *palette, SDL_PaletteChangedFunc callback, void *userdata)
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303 *
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304 * \brief Remove a callback function previously added with SDL_AddPaletteWatch()
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305 *
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306 * \sa SDL_AddPaletteWatch()
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307 */
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308 extern DECLSPEC void SDLCALL SDL_DelPaletteWatch(SDL_Palette * palette,
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309 SDL_PaletteChangedFunc
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310 callback, void *userdata);
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311
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312 /**
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313 * \fn int SDL_SetPaletteColors(SDL_Palette *palette, const SDL_Colors *colors, int firstcolor, int numcolors)
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314 *
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315 * \brief Set a range of colors in a palette.
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316 *
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317 * \param palette The palette to modify
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318 * \param colors An array of colors to copy into the palette
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319 * \param firstcolor The index of the first palette entry to modify
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320 * \param ncolors The number of entries to modify
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321 *
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322 * \return 0 on success, or -1 if not all of the colors could be set
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323 */
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324 extern DECLSPEC int SDLCALL SDL_SetPaletteColors(SDL_Palette * palette,
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325 const SDL_Color * colors,
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326 int firstcolor, int ncolors);
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327
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328 /**
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329 * \fn void SDL_FreePalette(SDL_Palette *palette)
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330 *
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331 * \brief Free a palette created with SDL_AllocPalette()
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332 *
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333 * \sa SDL_AllocPalette()
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334 */
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335 extern DECLSPEC void SDLCALL SDL_FreePalette(SDL_Palette * palette);
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336
2275
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337 /**
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338 * \fn Uint32 SDL_MapRGB(const SDL_PixelFormat *format,
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339 * Uint8 r, Uint8 g, Uint8 b)
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340 *
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341 * \brief Maps an RGB triple to an opaque pixel value for a given pixel format
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342 *
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343 * \sa SDL_MapRGBA
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344 */
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345 extern DECLSPEC Uint32 SDLCALL SDL_MapRGB(const SDL_PixelFormat * format,
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346 Uint8 r, Uint8 g, Uint8 b);
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347
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348 /**
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349 * \fn Uint32 SDL_MapRGBA(const SDL_PixelFormat *fmt,
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350 * Uint8 r, Uint8 g, Uint8 b, Uint8 a)
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351 *
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352 * \brief Maps an RGBA quadruple to a pixel value for a given pixel format
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353 *
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354 * \sa SDL_MapRGB
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355 */
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356 extern DECLSPEC Uint32 SDLCALL SDL_MapRGBA(const SDL_PixelFormat * format,
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357 Uint8 r, Uint8 g, Uint8 b,
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358 Uint8 a);
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359
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360 /**
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361 * \fn void SDL_GetRGB(Uint32 pixel, const SDL_PixelFormat * format,
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362 * Uint8 * r, Uint8 * g, Uint8 * b)
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363 *
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364 * \brief Maps a pixel value into the RGB components for a given pixel format
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365 *
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366 * \sa SDL_GetRGBA
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367 */
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368 extern DECLSPEC void SDLCALL SDL_GetRGB(Uint32 pixel,
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369 const SDL_PixelFormat * format,
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370 Uint8 * r, Uint8 * g, Uint8 * b);
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371
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372 /**
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373 * \fn void SDL_GetRGBA(Uint32 pixel, const SDL_PixelFormat * format,
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374 * Uint8 * r, Uint8 * g, Uint8 * b, Uint8 * a)
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375 *
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376 * \brief Maps a pixel value into the RGBA components for a given pixel format
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377 *
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378 * \sa SDL_GetRGB
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379 */
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380 extern DECLSPEC void SDLCALL SDL_GetRGBA(Uint32 pixel,
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381 const SDL_PixelFormat * format,
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382 Uint8 * r, Uint8 * g, Uint8 * b,
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383 Uint8 * a);
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384
1895
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385 /* Ends C function definitions when using C++ */
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386 #ifdef __cplusplus
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387 /* *INDENT-OFF* */
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388 }
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389 /* *INDENT-ON* */
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390 #endif
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391 #include "close_code.h"
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392
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393 #endif /* _SDL_pixels_h */
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394
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395 /* vi: set ts=4 sw=4 expandtab: */