Mercurial > sdl-ios-xcode

annotate include/SDL_pixels.h @ 3796:b19680c84cdf SDL-ryan-multiple-audio-device

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Bunch of 1.3 audio cleanups to remove FIXMEs, get driver specific crap out of the core and into the drivers where it belongs, and push generic responsibilities out of the drivers and into the core where they belong.
author Ryan C. Gordon <icculus@icculus.org>
date Wed, 04 Oct 2006 19:54:23 +0000
parents a788656ca29a
children b03710fb0333
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 enum
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41 { /* Pixel type */
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42 SDL_PIXELTYPE_UNKNOWN,
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43 SDL_PIXELTYPE_INDEX1,
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44 SDL_PIXELTYPE_INDEX4,
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45 SDL_PIXELTYPE_INDEX8,
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46 SDL_PIXELTYPE_PACKED8,
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47 SDL_PIXELTYPE_PACKED16,
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48 SDL_PIXELTYPE_PACKED32,
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49 SDL_PIXELTYPE_ARRAYU8,
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50 SDL_PIXELTYPE_ARRAYU16,
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51 SDL_PIXELTYPE_ARRAYU32,
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52 SDL_PIXELTYPE_ARRAYF16,
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53 SDL_PIXELTYPE_ARRAYF32,
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54 };
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55
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56 enum
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57 { /* bitmap pixel order, high bit -> low bit */
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58 SDL_BITMAPORDER_NONE,
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59 SDL_BITMAPORDER_4321,
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60 SDL_BITMAPORDER_1234,
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61 };
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62 enum
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63 { /* packed component order, high bit -> low bit */
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64 SDL_PACKEDORDER_NONE,
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65 SDL_PACKEDORDER_XRGB,
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66 SDL_PACKEDORDER_RGBX,
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67 SDL_PACKEDORDER_ARGB,
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68 SDL_PACKEDORDER_RGBA,
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69 SDL_PACKEDORDER_XBGR,
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70 SDL_PACKEDORDER_BGRX,
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71 SDL_PACKEDORDER_ABGR,
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72 SDL_PACKEDORDER_BGRA,
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73 };
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74 enum
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75 { /* array component order, low byte -> high byte */
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76 SDL_ARRAYORDER_NONE,
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77 SDL_ARRAYORDER_RGB,
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78 SDL_ARRAYORDER_RGBA,
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79 SDL_ARRAYORDER_ARGB,
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80 SDL_ARRAYORDER_BGR,
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81 SDL_ARRAYORDER_BGRA,
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82 SDL_ARRAYORDER_ABGR,
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83 };
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84
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85 enum
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86 { /* Packed component layout */
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87 SDL_PACKEDLAYOUT_NONE,
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88 SDL_PACKEDLAYOUT_332,
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89 SDL_PACKEDLAYOUT_4444,
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90 SDL_PACKEDLAYOUT_1555,
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91 SDL_PACKEDLAYOUT_5551,
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92 SDL_PACKEDLAYOUT_565,
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93 SDL_PACKEDLAYOUT_8888,
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94 SDL_PACKEDLAYOUT_2101010,
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95 SDL_PACKEDLAYOUT_1010102,
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96 };
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97
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98 #define SDL_DEFINE_PIXELFOURCC(A, B, C, D) \
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99 ((A) | ((B) << 8) | ((C) << 16) | ((D) << 24))
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100
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101 #define SDL_DEFINE_PIXELFORMAT(type, order, layout, bits, bytes) \
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102 ((1 << 31) | ((type) << 24) | ((order) << 20) | ((layout) << 16) | \
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103 ((bits) << 8) | ((bytes) << 0))
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104
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105 #define SDL_PIXELTYPE(X) (((X) >> 24) & 0x0F)
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106 #define SDL_PIXELORDER(X) (((X) >> 20) & 0x0F)
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107 #define SDL_PIXELLAYOUT(X) (((X) >> 16) & 0x0F)
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108 #define SDL_BITSPERPIXEL(X) (((X) >> 8) & 0xFF)
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109 #define SDL_BYTESPERPIXEL(X) (((X) >> 0) & 0xFF)
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110
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111 #define SDL_ISPIXELFORMAT_INDEXED(format) \
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112 ((SDL_PIXELTYPE(format) == SDL_PIXELTYPE_INDEX1) || \
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113 (SDL_PIXELTYPE(format) == SDL_PIXELTYPE_INDEX4) || \
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114 (SDL_PIXELTYPE(format) == SDL_PIXELTYPE_INDEX8))
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115
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116 #define SDL_ISPIXELFORMAT_FOURCC(format) \
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117 ((format) && !((format) & 0x80000000))
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118
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119 enum
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120 {
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121 SDL_PIXELFORMAT_UNKNOWN,
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122 SDL_PIXELFORMAT_INDEX1LSB =
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123 SDL_DEFINE_PIXELFORMAT(SDL_PIXELTYPE_INDEX1, SDL_BITMAPORDER_1234, 0,
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124 1, 0),
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125 SDL_PIXELFORMAT_INDEX1MSB =
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126 SDL_DEFINE_PIXELFORMAT(SDL_PIXELTYPE_INDEX1, SDL_BITMAPORDER_4321, 0,
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127 1, 0),
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128 SDL_PIXELFORMAT_INDEX4LSB =
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129 SDL_DEFINE_PIXELFORMAT(SDL_PIXELTYPE_INDEX4, SDL_BITMAPORDER_1234, 0,
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130 2, 0),
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131 SDL_PIXELFORMAT_INDEX4MSB =
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132 SDL_DEFINE_PIXELFORMAT(SDL_PIXELTYPE_INDEX4, SDL_BITMAPORDER_4321, 0,
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133 2, 0),
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134 SDL_PIXELFORMAT_INDEX8 =
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135 SDL_DEFINE_PIXELFORMAT(SDL_PIXELTYPE_INDEX8, 0, 0, 8, 1),
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136 SDL_PIXELFORMAT_RGB332 =
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137 SDL_DEFINE_PIXELFORMAT(SDL_PIXELTYPE_PACKED8, SDL_PACKEDORDER_XRGB,
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138 SDL_PACKEDLAYOUT_332, 8, 1),
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139 SDL_PIXELFORMAT_RGB444 =
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140 SDL_DEFINE_PIXELFORMAT(SDL_PIXELTYPE_PACKED16, SDL_PACKEDORDER_XRGB,
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141 SDL_PACKEDLAYOUT_4444, 12, 2),
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142 SDL_PIXELFORMAT_RGB555 =
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143 SDL_DEFINE_PIXELFORMAT(SDL_PIXELTYPE_PACKED16, SDL_PACKEDORDER_XRGB,
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144 SDL_PACKEDLAYOUT_1555, 15, 2),
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145 SDL_PIXELFORMAT_ARGB4444 =
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146 SDL_DEFINE_PIXELFORMAT(SDL_PIXELTYPE_PACKED16, SDL_PACKEDORDER_ARGB,
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147 SDL_PACKEDLAYOUT_4444, 16, 2),
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148 SDL_PIXELFORMAT_ARGB1555 =
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149 SDL_DEFINE_PIXELFORMAT(SDL_PIXELTYPE_PACKED16, SDL_PACKEDORDER_ARGB,
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150 SDL_PACKEDLAYOUT_1555, 16, 2),
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151 SDL_PIXELFORMAT_RGB565 =
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152 SDL_DEFINE_PIXELFORMAT(SDL_PIXELTYPE_PACKED16, SDL_PACKEDORDER_XRGB,
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153 SDL_PACKEDLAYOUT_565, 16, 2),
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154 SDL_PIXELFORMAT_RGB24 =
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155 SDL_DEFINE_PIXELFORMAT(SDL_PIXELTYPE_ARRAYU8, SDL_ARRAYORDER_RGB, 0,
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156 24, 3),
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157 SDL_PIXELFORMAT_BGR24 =
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158 SDL_DEFINE_PIXELFORMAT(SDL_PIXELTYPE_ARRAYU8, SDL_ARRAYORDER_BGR, 0,
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159 24, 3),
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160 SDL_PIXELFORMAT_RGB888 =
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diff changeset
161 SDL_DEFINE_PIXELFORMAT(SDL_PIXELTYPE_PACKED32, SDL_PACKEDORDER_XRGB,
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diff changeset
162 SDL_PACKEDLAYOUT_8888, 24, 4),
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163 SDL_PIXELFORMAT_BGR888 =
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164 SDL_DEFINE_PIXELFORMAT(SDL_PIXELTYPE_PACKED32, SDL_PACKEDORDER_XBGR,
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165 SDL_PACKEDLAYOUT_8888, 24, 4),
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166 SDL_PIXELFORMAT_ARGB8888 =
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167 SDL_DEFINE_PIXELFORMAT(SDL_PIXELTYPE_PACKED32, SDL_PACKEDORDER_ARGB,
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168 SDL_PACKEDLAYOUT_8888, 32, 4),
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169 SDL_PIXELFORMAT_RGBA8888 =
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diff changeset
170 SDL_DEFINE_PIXELFORMAT(SDL_PIXELTYPE_PACKED32, SDL_PACKEDORDER_RGBA,
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171 SDL_PACKEDLAYOUT_8888, 32, 4),
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172 SDL_PIXELFORMAT_ABGR8888 =
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173 SDL_DEFINE_PIXELFORMAT(SDL_PIXELTYPE_PACKED32, SDL_PACKEDORDER_ABGR,
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174 SDL_PACKEDLAYOUT_8888, 32, 4),
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175 SDL_PIXELFORMAT_BGRA8888 =
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176 SDL_DEFINE_PIXELFORMAT(SDL_PIXELTYPE_PACKED32, SDL_PACKEDORDER_BGRA,
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diff changeset
177 SDL_PACKEDLAYOUT_8888, 32, 4),
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178 SDL_PIXELFORMAT_ARGB2101010 =
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179 SDL_DEFINE_PIXELFORMAT(SDL_PIXELTYPE_PACKED32, SDL_PACKEDORDER_ARGB,
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180 SDL_PACKEDLAYOUT_2101010, 32, 4),
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181
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182 SDL_PIXELFORMAT_YV12 = /* Planar mode: Y + V + U (3 planes) */
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183 SDL_DEFINE_PIXELFOURCC('Y', 'V', '1', '2'),
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184 SDL_PIXELFORMAT_IYUV = /* Planar mode: Y + U + V (3 planes) */
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185 SDL_DEFINE_PIXELFOURCC('I', 'Y', 'U', 'V'),
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186 SDL_PIXELFORMAT_YUY2 = /* Packed mode: Y0+U0+Y1+V0 (1 plane) */
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187 SDL_DEFINE_PIXELFOURCC('Y', 'U', 'Y', '2'),
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188 SDL_PIXELFORMAT_UYVY = /* Packed mode: U0+Y0+V0+Y1 (1 plane) */
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189 SDL_DEFINE_PIXELFOURCC('U', 'Y', 'V', 'Y'),
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190 SDL_PIXELFORMAT_YVYU = /* Packed mode: Y0+V0+Y1+U0 (1 plane) */
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191 SDL_DEFINE_PIXELFOURCC('Y', 'V', 'Y', 'U'),
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192 };
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193
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194 typedef struct SDL_Color
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195 {
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196 Uint8 r;
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197 Uint8 g;
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diff changeset
198 Uint8 b;
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199 Uint8 unused;
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200 } SDL_Color;
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201 #define SDL_Colour SDL_Color
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202
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203 typedef struct SDL_Palette SDL_Palette;
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204 typedef int (*SDL_PaletteChangedFunc) (void *userdata, SDL_Palette * palette);
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205
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206 typedef struct SDL_PaletteWatch
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207 {
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208 SDL_PaletteChangedFunc callback;
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209 void *userdata;
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210 struct SDL_PaletteWatch *next;
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211 } SDL_PaletteWatch;
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212
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213 struct SDL_Palette
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214 {
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215 int ncolors;
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216 SDL_Color *colors;
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217
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218 int refcount;
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219 SDL_PaletteWatch *watch;
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220 };
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221
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222 /* Everything in the pixel format structure is read-only */
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223 typedef struct SDL_PixelFormat
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224 {
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225 SDL_Palette *palette;
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226 Uint8 BitsPerPixel;
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227 Uint8 BytesPerPixel;
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228 Uint8 Rloss;
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diff changeset
229 Uint8 Gloss;
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diff changeset
230 Uint8 Bloss;
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diff changeset
231 Uint8 Aloss;
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232 Uint8 Rshift;
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233 Uint8 Gshift;
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234 Uint8 Bshift;
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235 Uint8 Ashift;
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diff changeset
236 Uint32 Rmask;
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diff changeset
237 Uint32 Gmask;
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238 Uint32 Bmask;
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239 Uint32 Amask;
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240
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241 /* RGB color key information */
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242 Uint32 colorkey;
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243 /* Alpha value information (per-surface alpha) */
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244 Uint8 alpha;
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245 } SDL_PixelFormat;
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246
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247 /**
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248 * \fn SDL_bool SDL_PixelFormatEnumToMasks(Uint32 format, int *bpp, Uint32 * Rmask, Uint32 * Gmask, Uint32 * Bmask, Uint32 * Amask)
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249 *
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250 * \brief Convert one of the enumerated pixel formats to a bpp and RGBA masks.
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251 *
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252 * \return SDL_TRUE, or SDL_FALSE if the conversion wasn't possible.
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253 *
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254 * \sa SDL_MasksToPixelFormatEnum()
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255 */
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256 extern DECLSPEC SDL_bool SDLCALL SDL_PixelFormatEnumToMasks(Uint32 format,
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257 int *bpp,
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258 Uint32 * Rmask,
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259 Uint32 * Gmask,
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260 Uint32 * Bmask,
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261 Uint32 * Amask);
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262
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263 /**
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264 * \fn Uint32 SDL_MasksToPixelFormatEnum(int bpp, Uint32 Rmask, Uint32 Gmask, Uint32 Bmask, Uint32 Amask)
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265 *
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266 * \brief Convert a bpp and RGBA masks to an enumerated pixel format.
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267 *
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268 * \return The pixel format, or SDL_PixelFormat_Unknown if the conversion wasn't possible.
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269 *
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270 * \sa SDL_PixelFormatEnumToMasks()
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271 */
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272 extern DECLSPEC Uint32 SDLCALL SDL_MasksToPixelFormatEnum(int bpp,
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273 Uint32 Rmask,
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274 Uint32 Gmask,
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275 Uint32 Bmask,
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276 Uint32 Amask);
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277
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278 /**
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279 * \fn SDL_Palette *SDL_AllocPalette(int ncolors)
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280 *
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281 * \brief Create a palette structure with the specified number of color entries.
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282 *
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283 * \return A new palette, or NULL if there wasn't enough memory
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284 *
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285 * \note The palette entries are initialized to white.
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286 *
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287 * \sa SDL_FreePalette()
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288 */
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289 extern DECLSPEC SDL_Palette *SDLCALL SDL_AllocPalette(int ncolors);
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290
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291 /**
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292 * \fn int SDL_AddPaletteWatch(SDL_Palette *palette, SDL_PaletteChangedFunc callback, void *userdata)
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293 *
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294 * \brief Add a callback function which is called when the palette changes.
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295 *
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296 * \sa SDL_DelPaletteWatch()
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297 */
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298 extern DECLSPEC int SDLCALL SDL_AddPaletteWatch(SDL_Palette * palette,
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299 SDL_PaletteChangedFunc
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300 callback, void *userdata);
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301
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302 /**
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303 * \fn void SDL_DelPaletteWatch(SDL_Palette *palette, SDL_PaletteChangedFunc callback, void *userdata)
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304 *
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305 * \brief Remove a callback function previously added with SDL_AddPaletteWatch()
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306 *
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307 * \sa SDL_AddPaletteWatch()
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308 */
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309 extern DECLSPEC void SDLCALL SDL_DelPaletteWatch(SDL_Palette * palette,
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310 SDL_PaletteChangedFunc
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311 callback, void *userdata);
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312
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313 /**
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314 * \fn int SDL_SetPaletteColors(SDL_Palette *palette, const SDL_Colors *colors, int firstcolor, int numcolors)
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315 *
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316 * \brief Set a range of colors in a palette.
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317 *
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318 * \param palette The palette to modify
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319 * \param colors An array of colors to copy into the palette
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320 * \param firstcolor The index of the first palette entry to modify
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321 * \param ncolors The number of entries to modify
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322 *
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323 * \return 0 on success, or -1 if not all of the colors could be set
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324 */
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325 extern DECLSPEC int SDLCALL SDL_SetPaletteColors(SDL_Palette * palette,
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326 const SDL_Color * colors,
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327 int firstcolor, int ncolors);
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328
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329 /**
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330 * \fn void SDL_FreePalette(SDL_Palette *palette)
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331 *
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332 * \brief Free a palette created with SDL_AllocPalette()
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333 *
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334 * \sa SDL_AllocPalette()
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335 */
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336 extern DECLSPEC void SDLCALL SDL_FreePalette(SDL_Palette * palette);
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337
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338 /* Ends C function definitions when using C++ */
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339 #ifdef __cplusplus
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340 /* *INDENT-OFF* */
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341 }
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342 /* *INDENT-ON* */
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343 #endif
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344 #include "close_code.h"
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345
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346 #endif /* _SDL_pixels_h */
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347
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348 /* vi: set ts=4 sw=4 expandtab: */