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annotate src/video/SDL_pixels.c @ 3557:7184580ab756

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Added support for SDL_PIXELFORMAT_RGB24 and SDL_PIXELFORMAT_BGR24 to SDL_PixelFormatEnumToMasks()
author Sam Lantinga <slouken@libsdl.org>
date Mon, 14 Dec 2009 06:35:27 +0000
parents 7549b986ccb1
children 7dec3fe9b580
rev   line source
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2009 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 /* General (mostly internal) pixel/color manipulation routines for SDL */
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25
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26 #include "SDL_endian.h"
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27 #include "SDL_video.h"
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28 #include "SDL_sysvideo.h"
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29 #include "SDL_blit.h"
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30 #include "SDL_pixels_c.h"
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31 #include "SDL_RLEaccel_c.h"
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32
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33 struct SDL_PaletteWatch
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34 {
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35 SDL_PaletteChangedFunc callback;
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36 void *userdata;
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37 struct SDL_PaletteWatch *next;
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38 };
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39
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40 /* Helper functions */
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41
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42 SDL_bool
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43 SDL_PixelFormatEnumToMasks(Uint32 format, int *bpp, Uint32 * Rmask,
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44 Uint32 * Gmask, Uint32 * Bmask, Uint32 * Amask)
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45 {
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46 Uint32 masks[4];
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47
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48 /* Initialize the values here */
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49 if (SDL_BYTESPERPIXEL(format) <= 2) {
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50 *bpp = SDL_BITSPERPIXEL(format);
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51 } else {
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52 *bpp = SDL_BYTESPERPIXEL(format) * 8;
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53 }
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54 *Rmask = *Gmask = *Bmask = *Amask = 0;
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55
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56 if (format == SDL_PIXELFORMAT_RGB24) {
7184580ab756 Added support for SDL_PIXELFORMAT_RGB24 and SDL_PIXELFORMAT_BGR24 to SDL_PixelFormatEnumToMasks()
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57 #if SDL_BYTEORDER == SDL_BIG_ENDIAN
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58 *Rmask = 0x00FF0000;
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59 *Gmask = 0x0000FF00;
7184580ab756 Added support for SDL_PIXELFORMAT_RGB24 and SDL_PIXELFORMAT_BGR24 to SDL_PixelFormatEnumToMasks()
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60 *Bmask = 0x000000FF;
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61 #else
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62 *Rmask = 0x000000FF;
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63 *Gmask = 0x0000FF00;
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64 *Bmask = 0x00FF0000;
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65 #endif
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66 return SDL_TRUE;
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67 }
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68
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69 if (format == SDL_PIXELFORMAT_BGR24) {
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70 #if SDL_BYTEORDER == SDL_BIG_ENDIAN
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71 *Rmask = 0x000000FF;
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72 *Gmask = 0x0000FF00;
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73 *Bmask = 0x00FF0000;
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74 #else
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75 *Rmask = 0x00FF0000;
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76 *Gmask = 0x0000FF00;
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77 *Bmask = 0x000000FF;
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78 #endif
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79 return SDL_TRUE;
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80 }
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81
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82 if (SDL_PIXELTYPE(format) != SDL_PIXELTYPE_PACKED8 &&
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83 SDL_PIXELTYPE(format) != SDL_PIXELTYPE_PACKED16 &&
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84 SDL_PIXELTYPE(format) != SDL_PIXELTYPE_PACKED32) {
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85 /* Not a format that uses masks */
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86 return SDL_TRUE;
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87 }
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88
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89 switch (SDL_PIXELLAYOUT(format)) {
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90 case SDL_PACKEDLAYOUT_332:
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91 masks[0] = 0x00000000;
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92 masks[1] = 0x000000E0;
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93 masks[2] = 0x0000001C;
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94 masks[3] = 0x00000003;
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95 break;
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96 case SDL_PACKEDLAYOUT_4444:
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97 masks[0] = 0x0000F000;
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98 masks[1] = 0x00000F00;
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99 masks[2] = 0x000000F0;
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100 masks[3] = 0x0000000F;
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101 break;
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102 case SDL_PACKEDLAYOUT_1555:
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103 masks[0] = 0x00008000;
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104 masks[1] = 0x00007C00;
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105 masks[2] = 0x000003E0;
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106 masks[3] = 0x0000001F;
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107 break;
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108 case SDL_PACKEDLAYOUT_5551:
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109 masks[0] = 0x0000F800;
a252014ce27d Support for BGR565 pixel format has been added, mainly for OpenGL ES renderer. OpenGL ES renderer now have new texture formats.
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110 masks[1] = 0x000007C0;
a252014ce27d Support for BGR565 pixel format has been added, mainly for OpenGL ES renderer. OpenGL ES renderer now have new texture formats.
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111 masks[2] = 0x0000003E;
a252014ce27d Support for BGR565 pixel format has been added, mainly for OpenGL ES renderer. OpenGL ES renderer now have new texture formats.
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112 masks[3] = 0x00000001;
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113 break;
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114 case SDL_PACKEDLAYOUT_565:
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115 masks[0] = 0x00000000;
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116 masks[1] = 0x0000F800;
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117 masks[2] = 0x000007E0;
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118 masks[3] = 0x0000001F;
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119 break;
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120 case SDL_PACKEDLAYOUT_8888:
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121 masks[0] = 0xFF000000;
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diff changeset
122 masks[1] = 0x00FF0000;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
123 masks[2] = 0x0000FF00;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
124 masks[3] = 0x000000FF;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
125 break;
1965
a788656ca29a SDL constants are all uppercase.
Sam Lantinga <slouken@libsdl.org>
parents: 1920
diff changeset
126 case SDL_PACKEDLAYOUT_2101010:
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
127 masks[0] = 0xC0000000;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
128 masks[1] = 0x3FF00000;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
129 masks[2] = 0x000FFC00;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
130 masks[3] = 0x000003FF;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
131 break;
3163
a252014ce27d Support for BGR565 pixel format has been added, mainly for OpenGL ES renderer. OpenGL ES renderer now have new texture formats.
Mike Gorchak <lestat@i.com.ua>
parents: 2990
diff changeset
132 case SDL_PACKEDLAYOUT_1010102:
a252014ce27d Support for BGR565 pixel format has been added, mainly for OpenGL ES renderer. OpenGL ES renderer now have new texture formats.
Mike Gorchak <lestat@i.com.ua>
parents: 2990
diff changeset
133 masks[0] = 0xFFC00000;
a252014ce27d Support for BGR565 pixel format has been added, mainly for OpenGL ES renderer. OpenGL ES renderer now have new texture formats.
Mike Gorchak <lestat@i.com.ua>
parents: 2990
diff changeset
134 masks[1] = 0x003FF000;
a252014ce27d Support for BGR565 pixel format has been added, mainly for OpenGL ES renderer. OpenGL ES renderer now have new texture formats.
Mike Gorchak <lestat@i.com.ua>
parents: 2990
diff changeset
135 masks[2] = 0x00000FFC;
a252014ce27d Support for BGR565 pixel format has been added, mainly for OpenGL ES renderer. OpenGL ES renderer now have new texture formats.
Mike Gorchak <lestat@i.com.ua>
parents: 2990
diff changeset
136 masks[3] = 0x00000003;
a252014ce27d Support for BGR565 pixel format has been added, mainly for OpenGL ES renderer. OpenGL ES renderer now have new texture formats.
Mike Gorchak <lestat@i.com.ua>
parents: 2990
diff changeset
137 break;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
138 default:
3484
fed6d4c6c693 Set the error so someone can get more information
Sam Lantinga <slouken@libsdl.org>
parents: 3284
diff changeset
139 SDL_SetError("Unknown pixel format");
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
140 return SDL_FALSE;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
141 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
142
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
143 switch (SDL_PIXELORDER(format)) {
1965
a788656ca29a SDL constants are all uppercase.
Sam Lantinga <slouken@libsdl.org>
parents: 1920
diff changeset
144 case SDL_PACKEDORDER_XRGB:
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
145 *Rmask = masks[1];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
146 *Gmask = masks[2];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
147 *Bmask = masks[3];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
148 break;
1965
a788656ca29a SDL constants are all uppercase.
Sam Lantinga <slouken@libsdl.org>
parents: 1920
diff changeset
149 case SDL_PACKEDORDER_RGBX:
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
150 *Rmask = masks[0];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
151 *Gmask = masks[1];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
152 *Bmask = masks[2];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
153 break;
1965
a788656ca29a SDL constants are all uppercase.
Sam Lantinga <slouken@libsdl.org>
parents: 1920
diff changeset
154 case SDL_PACKEDORDER_ARGB:
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
155 *Amask = masks[0];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
156 *Rmask = masks[1];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
157 *Gmask = masks[2];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
158 *Bmask = masks[3];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
159 break;
1965
a788656ca29a SDL constants are all uppercase.
Sam Lantinga <slouken@libsdl.org>
parents: 1920
diff changeset
160 case SDL_PACKEDORDER_RGBA:
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
161 *Rmask = masks[0];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
162 *Gmask = masks[1];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
163 *Bmask = masks[2];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
164 *Amask = masks[3];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
165 break;
1965
a788656ca29a SDL constants are all uppercase.
Sam Lantinga <slouken@libsdl.org>
parents: 1920
diff changeset
166 case SDL_PACKEDORDER_XBGR:
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
167 *Bmask = masks[1];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
168 *Gmask = masks[2];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
169 *Rmask = masks[3];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
170 break;
1965
a788656ca29a SDL constants are all uppercase.
Sam Lantinga <slouken@libsdl.org>
parents: 1920
diff changeset
171 case SDL_PACKEDORDER_BGRX:
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
172 *Bmask = masks[0];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
173 *Gmask = masks[1];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
174 *Rmask = masks[2];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
175 break;
1965
a788656ca29a SDL constants are all uppercase.
Sam Lantinga <slouken@libsdl.org>
parents: 1920
diff changeset
176 case SDL_PACKEDORDER_BGRA:
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
177 *Bmask = masks[0];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
178 *Gmask = masks[1];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
179 *Rmask = masks[2];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
180 *Amask = masks[3];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
181 break;
1965
a788656ca29a SDL constants are all uppercase.
Sam Lantinga <slouken@libsdl.org>
parents: 1920
diff changeset
182 case SDL_PACKEDORDER_ABGR:
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
183 *Amask = masks[0];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
184 *Bmask = masks[1];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
185 *Gmask = masks[2];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
186 *Rmask = masks[3];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
187 break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
188 default:
3484
fed6d4c6c693 Set the error so someone can get more information
Sam Lantinga <slouken@libsdl.org>
parents: 3284
diff changeset
189 SDL_SetError("Unknown pixel format");
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
190 return SDL_FALSE;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
191 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
192 return SDL_TRUE;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
193 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
194
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
195 Uint32
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
196 SDL_MasksToPixelFormatEnum(int bpp, Uint32 Rmask, Uint32 Gmask, Uint32 Bmask,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
197 Uint32 Amask)
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
198 {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
199 switch (bpp) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
200 case 8:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
201 switch (Rmask) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
202 case 0:
1965
a788656ca29a SDL constants are all uppercase.
Sam Lantinga <slouken@libsdl.org>
parents: 1920
diff changeset
203 return SDL_PIXELFORMAT_INDEX8;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
204 case 0xE0:
1965
a788656ca29a SDL constants are all uppercase.
Sam Lantinga <slouken@libsdl.org>
parents: 1920
diff changeset
205 return SDL_PIXELFORMAT_RGB332;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
206 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
207 break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
208 case 12:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
209 switch (Rmask) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
210 case 0x0F00:
1965
a788656ca29a SDL constants are all uppercase.
Sam Lantinga <slouken@libsdl.org>
parents: 1920
diff changeset
211 return SDL_PIXELFORMAT_RGB444;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
212 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
213 break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
214 case 15:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
215 switch (Rmask) {
2735
204be4fc2726 Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2275
diff changeset
216 case 0x001F:
204be4fc2726 Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2275
diff changeset
217 return SDL_PIXELFORMAT_BGR555;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
218 case 0x7C00:
1965
a788656ca29a SDL constants are all uppercase.
Sam Lantinga <slouken@libsdl.org>
parents: 1920
diff changeset
219 return SDL_PIXELFORMAT_RGB555;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
220 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
221 break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
222 case 16:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
223 switch (Rmask) {
3163
a252014ce27d Support for BGR565 pixel format has been added, mainly for OpenGL ES renderer. OpenGL ES renderer now have new texture formats.
Mike Gorchak <lestat@i.com.ua>
parents: 2990
diff changeset
224 case 0x000F:
a252014ce27d Support for BGR565 pixel format has been added, mainly for OpenGL ES renderer. OpenGL ES renderer now have new texture formats.
Mike Gorchak <lestat@i.com.ua>
parents: 2990
diff changeset
225 return SDL_PIXELFORMAT_ABGR4444;
2735
204be4fc2726 Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2275
diff changeset
226 case 0x001F:
3163
a252014ce27d Support for BGR565 pixel format has been added, mainly for OpenGL ES renderer. OpenGL ES renderer now have new texture formats.
Mike Gorchak <lestat@i.com.ua>
parents: 2990
diff changeset
227 if (Gmask == 0x07E0) {
a252014ce27d Support for BGR565 pixel format has been added, mainly for OpenGL ES renderer. OpenGL ES renderer now have new texture formats.
Mike Gorchak <lestat@i.com.ua>
parents: 2990
diff changeset
228 return SDL_PIXELFORMAT_BGR565;
a252014ce27d Support for BGR565 pixel format has been added, mainly for OpenGL ES renderer. OpenGL ES renderer now have new texture formats.
Mike Gorchak <lestat@i.com.ua>
parents: 2990
diff changeset
229 }
2735
204be4fc2726 Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2275
diff changeset
230 return SDL_PIXELFORMAT_ABGR1555;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
231 case 0x0F00:
1965
a788656ca29a SDL constants are all uppercase.
Sam Lantinga <slouken@libsdl.org>
parents: 1920
diff changeset
232 return SDL_PIXELFORMAT_ARGB4444;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
233 case 0x7C00:
1965
a788656ca29a SDL constants are all uppercase.
Sam Lantinga <slouken@libsdl.org>
parents: 1920
diff changeset
234 return SDL_PIXELFORMAT_ARGB1555;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
235 case 0xF800:
1965
a788656ca29a SDL constants are all uppercase.
Sam Lantinga <slouken@libsdl.org>
parents: 1920
diff changeset
236 return SDL_PIXELFORMAT_RGB565;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
237 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
238 break;
3182
9f82979eaaf0 Support for 24 bpp pixel formats has been added.
Mike Gorchak <lestat@i.com.ua>
parents: 3163
diff changeset
239 case 24:
9f82979eaaf0 Support for 24 bpp pixel formats has been added.
Mike Gorchak <lestat@i.com.ua>
parents: 3163
diff changeset
240 switch (Rmask) {
9f82979eaaf0 Support for 24 bpp pixel formats has been added.
Mike Gorchak <lestat@i.com.ua>
parents: 3163
diff changeset
241 case 0x00FF0000:
9f82979eaaf0 Support for 24 bpp pixel formats has been added.
Mike Gorchak <lestat@i.com.ua>
parents: 3163
diff changeset
242 return SDL_PIXELFORMAT_RGB888;
9f82979eaaf0 Support for 24 bpp pixel formats has been added.
Mike Gorchak <lestat@i.com.ua>
parents: 3163
diff changeset
243 case 0x000000FF:
9f82979eaaf0 Support for 24 bpp pixel formats has been added.
Mike Gorchak <lestat@i.com.ua>
parents: 3163
diff changeset
244 return SDL_PIXELFORMAT_BGR888;
9f82979eaaf0 Support for 24 bpp pixel formats has been added.
Mike Gorchak <lestat@i.com.ua>
parents: 3163
diff changeset
245 case 0x00000000:
9f82979eaaf0 Support for 24 bpp pixel formats has been added.
Mike Gorchak <lestat@i.com.ua>
parents: 3163
diff changeset
246 /* FIXME: At this point we can't distinguish */
9f82979eaaf0 Support for 24 bpp pixel formats has been added.
Mike Gorchak <lestat@i.com.ua>
parents: 3163
diff changeset
247 /* if this format is RGB24 or BGR24 */
9f82979eaaf0 Support for 24 bpp pixel formats has been added.
Mike Gorchak <lestat@i.com.ua>
parents: 3163
diff changeset
248 return SDL_PIXELFORMAT_RGB24;
9f82979eaaf0 Support for 24 bpp pixel formats has been added.
Mike Gorchak <lestat@i.com.ua>
parents: 3163
diff changeset
249 }
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
250 case 32:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
251 switch (Rmask) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
252 case 0xFF000000:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
253 if (Amask == 0x000000FF) {
1965
a788656ca29a SDL constants are all uppercase.
Sam Lantinga <slouken@libsdl.org>
parents: 1920
diff changeset
254 return SDL_PIXELFORMAT_RGBA8888;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
255 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
256 break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
257 case 0x00FF0000:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
258 if (Amask == 0xFF000000) {
1965
a788656ca29a SDL constants are all uppercase.
Sam Lantinga <slouken@libsdl.org>
parents: 1920
diff changeset
259 return SDL_PIXELFORMAT_ARGB8888;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
260 } else {
1965
a788656ca29a SDL constants are all uppercase.
Sam Lantinga <slouken@libsdl.org>
parents: 1920
diff changeset
261 return SDL_PIXELFORMAT_RGB888;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
262 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
263 break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
264 case 0x0000FF00:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
265 if (Amask == 0x000000FF) {
1965
a788656ca29a SDL constants are all uppercase.
Sam Lantinga <slouken@libsdl.org>
parents: 1920
diff changeset
266 return SDL_PIXELFORMAT_BGRA8888;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
267 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
268 break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
269 case 0x000000FF:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
270 if (Amask == 0xFF000000) {
1965
a788656ca29a SDL constants are all uppercase.
Sam Lantinga <slouken@libsdl.org>
parents: 1920
diff changeset
271 return SDL_PIXELFORMAT_ABGR8888;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
272 } else {
1965
a788656ca29a SDL constants are all uppercase.
Sam Lantinga <slouken@libsdl.org>
parents: 1920
diff changeset
273 return SDL_PIXELFORMAT_BGR888;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
274 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
275 break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
276 case 0x3FF00000:
1965
a788656ca29a SDL constants are all uppercase.
Sam Lantinga <slouken@libsdl.org>
parents: 1920
diff changeset
277 return SDL_PIXELFORMAT_ARGB2101010;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
278 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
279 }
1965
a788656ca29a SDL constants are all uppercase.
Sam Lantinga <slouken@libsdl.org>
parents: 1920
diff changeset
280 return SDL_PIXELFORMAT_UNKNOWN;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
281 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
282
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
283
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
284 SDL_Palette *
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
285 SDL_AllocPalette(int ncolors)
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
286 {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
287 SDL_Palette *palette;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
288
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
289 palette = (SDL_Palette *) SDL_malloc(sizeof(*palette));
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
290 if (!palette) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
291 SDL_OutOfMemory();
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
292 return NULL;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
293 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
294 palette->colors =
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
295 (SDL_Color *) SDL_malloc(ncolors * sizeof(*palette->colors));
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
296 if (!palette->colors) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
297 SDL_free(palette);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
298 return NULL;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
299 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
300 palette->ncolors = ncolors;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
301 palette->watch = NULL;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
302 palette->refcount = 1;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
303
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
304 SDL_memset(palette->colors, 0xFF, ncolors * sizeof(*palette->colors));
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
305
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
306 return palette;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
307 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
308
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
309 int
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
310 SDL_AddPaletteWatch(SDL_Palette * palette, SDL_PaletteChangedFunc callback,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
311 void *userdata)
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
312 {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
313 SDL_PaletteWatch *watch;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
314
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
315 if (!palette) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
316 return -1;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
317 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
318
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
319 watch = (SDL_PaletteWatch *) SDL_malloc(sizeof(*watch));
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
320 if (!watch) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
321 SDL_OutOfMemory();
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
322 return -1;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
323 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
324
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
325 watch->callback = callback;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
326 watch->userdata = userdata;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
327 watch->next = palette->watch;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
328 palette->watch = watch;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
329 ++palette->refcount;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
330 return 0;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
331 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
332
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
333 void
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
334 SDL_DelPaletteWatch(SDL_Palette * palette, SDL_PaletteChangedFunc callback,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
335 void *userdata)
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
336 {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
337 SDL_PaletteWatch *prev, *watch;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
338
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
339 if (!palette) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
340 return;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
341 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
342
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
343 for (prev = NULL, watch = palette->watch; watch;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
344 prev = watch, watch = watch->next) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
345 if (watch->callback == callback && watch->userdata == userdata) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
346 if (prev) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
347 prev->next = watch->next;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
348 } else {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
349 palette->watch = watch->next;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
350 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
351 SDL_free(watch);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
352 SDL_FreePalette(palette);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
353 return;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
354 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
355 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
356 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
357
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
358 int
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
359 SDL_SetPaletteColors(SDL_Palette * palette, const SDL_Color * colors,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
360 int firstcolor, int ncolors)
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
361 {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
362 SDL_PaletteWatch *watch;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
363 int status = 0;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
364
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
365 /* Verify the parameters */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
366 if (!palette) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
367 return -1;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
368 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
369 if (ncolors > (palette->ncolors - firstcolor)) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
370 ncolors = (palette->ncolors - firstcolor);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
371 status = -1;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
372 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
373
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
374 if (colors != (palette->colors + firstcolor)) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
375 SDL_memcpy(palette->colors + firstcolor, colors,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
376 ncolors * sizeof(*colors));
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
377 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
378
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
379 for (watch = palette->watch; watch; watch = watch->next) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
380 if (watch->callback(watch->userdata, palette) < 0) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
381 status = -1;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
382 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
383 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
384
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
385 return status;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
386 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
387
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
388 void
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
389 SDL_FreePalette(SDL_Palette * palette)
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
390 {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
391 if (!palette) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
392 return;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
393 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
394 if (--palette->refcount > 0) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
395 return;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
396 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
397 if (palette->colors) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
398 SDL_free(palette->colors);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
399 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
400 SDL_free(palette);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
401 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
402
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
403 /*
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
404 * Allocate a pixel format structure and fill it according to the given info.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
405 */
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
406 SDL_PixelFormat *
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
407 SDL_AllocFormat(int bpp,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
408 Uint32 Rmask, Uint32 Gmask, Uint32 Bmask, Uint32 Amask)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
409 {
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
410 SDL_PixelFormat *format;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
411
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
412 /* Allocate an empty pixel format structure */
2967
e4a469d6ddab Implemented SDL_SetWindowIcon(), with translucent icon support under X11.
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
413 format = SDL_malloc(sizeof(*format));
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
414 if (format == NULL) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
415 SDL_OutOfMemory();
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
416 return (NULL);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
417 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
418
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
419 /* Set up the format */
2967
e4a469d6ddab Implemented SDL_SetWindowIcon(), with translucent icon support under X11.
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
420 return SDL_InitFormat(format, bpp, Rmask, Gmask, Bmask, Amask);
e4a469d6ddab Implemented SDL_SetWindowIcon(), with translucent icon support under X11.
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
421 }
e4a469d6ddab Implemented SDL_SetWindowIcon(), with translucent icon support under X11.
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
422
e4a469d6ddab Implemented SDL_SetWindowIcon(), with translucent icon support under X11.
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
423 SDL_PixelFormat *
2990
Sam Lantinga <slouken@libsdl.org>
parents: 2967
diff changeset
424 SDL_InitFormat(SDL_PixelFormat * format, int bpp, Uint32 Rmask, Uint32 Gmask,
Sam Lantinga <slouken@libsdl.org>
parents: 2967
diff changeset
425 Uint32 Bmask, Uint32 Amask)
2967
e4a469d6ddab Implemented SDL_SetWindowIcon(), with translucent icon support under X11.
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
426 {
e4a469d6ddab Implemented SDL_SetWindowIcon(), with translucent icon support under X11.
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
427 Uint32 mask;
e4a469d6ddab Implemented SDL_SetWindowIcon(), with translucent icon support under X11.
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
428
e4a469d6ddab Implemented SDL_SetWindowIcon(), with translucent icon support under X11.
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
429 /* Set up the format */
e4a469d6ddab Implemented SDL_SetWindowIcon(), with translucent icon support under X11.
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
430 SDL_zerop(format);
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
431 format->BitsPerPixel = bpp;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
432 format->BytesPerPixel = (bpp + 7) / 8;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
433 if (Rmask || Bmask || Gmask) { /* Packed pixels with custom mask */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
434 format->Rshift = 0;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
435 format->Rloss = 8;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
436 if (Rmask) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
437 for (mask = Rmask; !(mask & 0x01); mask >>= 1)
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
438 ++format->Rshift;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
439 for (; (mask & 0x01); mask >>= 1)
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
440 --format->Rloss;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
441 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
442 format->Gshift = 0;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
443 format->Gloss = 8;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
444 if (Gmask) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
445 for (mask = Gmask; !(mask & 0x01); mask >>= 1)
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
446 ++format->Gshift;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
447 for (; (mask & 0x01); mask >>= 1)
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
448 --format->Gloss;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
449 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
450 format->Bshift = 0;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
451 format->Bloss = 8;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
452 if (Bmask) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
453 for (mask = Bmask; !(mask & 0x01); mask >>= 1)
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
454 ++format->Bshift;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
455 for (; (mask & 0x01); mask >>= 1)
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
456 --format->Bloss;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
457 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
458 format->Ashift = 0;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
459 format->Aloss = 8;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
460 if (Amask) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
461 for (mask = Amask; !(mask & 0x01); mask >>= 1)
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
462 ++format->Ashift;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
463 for (; (mask & 0x01); mask >>= 1)
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
464 --format->Aloss;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
465 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
466 format->Rmask = Rmask;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
467 format->Gmask = Gmask;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
468 format->Bmask = Bmask;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
469 format->Amask = Amask;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
470 } else if (bpp > 8) { /* Packed pixels with standard mask */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
471 /* R-G-B */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
472 if (bpp > 24)
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
473 bpp = 24;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
474 format->Rloss = 8 - (bpp / 3);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
475 format->Gloss = 8 - (bpp / 3) - (bpp % 3);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
476 format->Bloss = 8 - (bpp / 3);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
477 format->Rshift = ((bpp / 3) + (bpp % 3)) + (bpp / 3);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
478 format->Gshift = (bpp / 3);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
479 format->Bshift = 0;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
480 format->Rmask = ((0xFF >> format->Rloss) << format->Rshift);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
481 format->Gmask = ((0xFF >> format->Gloss) << format->Gshift);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
482 format->Bmask = ((0xFF >> format->Bloss) << format->Bshift);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
483 } else {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
484 /* Palettized formats have no mask info */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
485 format->Rloss = 8;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
486 format->Gloss = 8;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
487 format->Bloss = 8;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
488 format->Aloss = 8;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
489 format->Rshift = 0;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
490 format->Gshift = 0;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
491 format->Bshift = 0;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
492 format->Ashift = 0;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
493 format->Rmask = 0;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
494 format->Gmask = 0;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
495 format->Bmask = 0;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
496 format->Amask = 0;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
497 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
498 format->palette = NULL;
1057
e9d23bb80140 Date: Mon, 02 May 2005 04:23:16 -0500
Sam Lantinga <slouken@libsdl.org>
parents: 1027
diff changeset
499
2967
e4a469d6ddab Implemented SDL_SetWindowIcon(), with translucent icon support under X11.
Sam Lantinga <slouken@libsdl.org>
parents: 2859
diff changeset
500 return format;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
501 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
502
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
503 /*
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
504 * Change any previous mappings from/to the new surface format
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
505 */
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
506 void
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
507 SDL_FormatChanged(SDL_Surface * surface)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
508 {
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
509 static int format_version = 0;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
510 ++format_version;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
511 if (format_version < 0) { /* It wrapped... */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
512 format_version = 1;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
513 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
514 surface->format_version = format_version;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
515 SDL_InvalidateMap(surface->map);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
516 }
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
517
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
518 /*
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
519 * Free a previously allocated format structure
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
520 */
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
521 void
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
522 SDL_FreeFormat(SDL_PixelFormat * format)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
523 {
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
524 if (!format) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
525 return;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
526 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
527 SDL_free(format);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
528 }
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
529
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
530 /*
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
531 * Calculate an 8-bit (3 red, 3 green, 2 blue) dithered palette of colors
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
532 */
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
533 void
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
534 SDL_DitherColors(SDL_Color * colors, int bpp)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
535 {
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
536 int i;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
537 if (bpp != 8)
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
538 return; /* only 8bpp supported right now */
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
539
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
540 for (i = 0; i < 256; i++) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
541 int r, g, b;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
542 /* map each bit field to the full [0, 255] interval,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
543 so 0 is mapped to (0, 0, 0) and 255 to (255, 255, 255) */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
544 r = i & 0xe0;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
545 r |= r >> 3 | r >> 6;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
546 colors[i].r = r;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
547 g = (i << 3) & 0xe0;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
548 g |= g >> 3 | g >> 6;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
549 colors[i].g = g;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
550 b = i & 0x3;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
551 b |= b << 2;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
552 b |= b << 4;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
553 colors[i].b = b;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
554 colors[i].unused = SDL_ALPHA_OPAQUE;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
555 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
556 }
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
557
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
558 /*
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
559 * Calculate the pad-aligned scanline width of a surface
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
560 */
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
561 int
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
562 SDL_CalculatePitch(SDL_Surface * surface)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
563 {
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
564 int pitch;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
565
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
566 /* Surface should be 4-byte aligned for speed */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
567 pitch = surface->w * surface->format->BytesPerPixel;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
568 switch (surface->format->BitsPerPixel) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
569 case 1:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
570 pitch = (pitch + 7) / 8;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
571 break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
572 case 4:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
573 pitch = (pitch + 1) / 2;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
574 break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
575 default:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
576 break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
577 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
578 pitch = (pitch + 3) & ~3; /* 4-byte aligning */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
579 return (pitch);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
580 }
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
581
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
582 /*
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
583 * Match an RGB value to a particular palette index
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
584 */
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
585 Uint8
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
586 SDL_FindColor(SDL_Palette * pal, Uint8 r, Uint8 g, Uint8 b)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
587 {
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
588 /* Do colorspace distance matching */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
589 unsigned int smallest;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
590 unsigned int distance;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
591 int rd, gd, bd;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
592 int i;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
593 Uint8 pixel = 0;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
594
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
595 smallest = ~0;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
596 for (i = 0; i < pal->ncolors; ++i) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
597 rd = pal->colors[i].r - r;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
598 gd = pal->colors[i].g - g;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
599 bd = pal->colors[i].b - b;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
600 distance = (rd * rd) + (gd * gd) + (bd * bd);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
601 if (distance < smallest) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
602 pixel = i;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
603 if (distance == 0) { /* Perfect match! */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
604 break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
605 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
606 smallest = distance;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
607 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
608 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
609 return (pixel);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
610 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
611
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
612 /* Find the opaque pixel value corresponding to an RGB triple */
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
613 Uint32
2275
12ea0fdc0df2 Split out the SDL_rect and SDL_surface functions into their own headers.
Sam Lantinga <slouken@libsdl.org>
parents: 2267
diff changeset
614 SDL_MapRGB(const SDL_PixelFormat * format, Uint8 r, Uint8 g, Uint8 b)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
615 {
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
616 if (format->palette == NULL) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
617 return (r >> format->Rloss) << format->Rshift
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
618 | (g >> format->Gloss) << format->Gshift
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
619 | (b >> format->Bloss) << format->Bshift | format->Amask;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
620 } else {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
621 return SDL_FindColor(format->palette, r, g, b);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
622 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
623 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
624
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
625 /* Find the pixel value corresponding to an RGBA quadruple */
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
626 Uint32
2275
12ea0fdc0df2 Split out the SDL_rect and SDL_surface functions into their own headers.
Sam Lantinga <slouken@libsdl.org>
parents: 2267
diff changeset
627 SDL_MapRGBA(const SDL_PixelFormat * format, Uint8 r, Uint8 g, Uint8 b,
12ea0fdc0df2 Split out the SDL_rect and SDL_surface functions into their own headers.
Sam Lantinga <slouken@libsdl.org>
parents: 2267
diff changeset
628 Uint8 a)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
629 {
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
630 if (format->palette == NULL) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
631 return (r >> format->Rloss) << format->Rshift
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
632 | (g >> format->Gloss) << format->Gshift
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
633 | (b >> format->Bloss) << format->Bshift
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
634 | ((a >> format->Aloss) << format->Ashift & format->Amask);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
635 } else {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
636 return SDL_FindColor(format->palette, r, g, b);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
637 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
638 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
639
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
640 void
2275
12ea0fdc0df2 Split out the SDL_rect and SDL_surface functions into their own headers.
Sam Lantinga <slouken@libsdl.org>
parents: 2267
diff changeset
641 SDL_GetRGB(Uint32 pixel, const SDL_PixelFormat * format, Uint8 * r, Uint8 * g,
12ea0fdc0df2 Split out the SDL_rect and SDL_surface functions into their own headers.
Sam Lantinga <slouken@libsdl.org>
parents: 2267
diff changeset
642 Uint8 * b)
12ea0fdc0df2 Split out the SDL_rect and SDL_surface functions into their own headers.
Sam Lantinga <slouken@libsdl.org>
parents: 2267
diff changeset
643 {
12ea0fdc0df2 Split out the SDL_rect and SDL_surface functions into their own headers.
Sam Lantinga <slouken@libsdl.org>
parents: 2267
diff changeset
644 if (format->palette == NULL) {
12ea0fdc0df2 Split out the SDL_rect and SDL_surface functions into their own headers.
Sam Lantinga <slouken@libsdl.org>
parents: 2267
diff changeset
645 /*
12ea0fdc0df2 Split out the SDL_rect and SDL_surface functions into their own headers.
Sam Lantinga <slouken@libsdl.org>
parents: 2267
diff changeset
646 * This makes sure that the result is mapped to the
12ea0fdc0df2 Split out the SDL_rect and SDL_surface functions into their own headers.
Sam Lantinga <slouken@libsdl.org>
parents: 2267
diff changeset
647 * interval [0..255], and the maximum value for each
12ea0fdc0df2 Split out the SDL_rect and SDL_surface functions into their own headers.
Sam Lantinga <slouken@libsdl.org>
parents: 2267
diff changeset
648 * component is 255. This is important to make sure
12ea0fdc0df2 Split out the SDL_rect and SDL_surface functions into their own headers.
Sam Lantinga <slouken@libsdl.org>
parents: 2267
diff changeset
649 * that white is indeed reported as (255, 255, 255).
12ea0fdc0df2 Split out the SDL_rect and SDL_surface functions into their own headers.
Sam Lantinga <slouken@libsdl.org>
parents: 2267
diff changeset
650 * This only works for RGB bit fields at least 4 bit
12ea0fdc0df2 Split out the SDL_rect and SDL_surface functions into their own headers.
Sam Lantinga <slouken@libsdl.org>
parents: 2267
diff changeset
651 * wide, which is almost always the case.
12ea0fdc0df2 Split out the SDL_rect and SDL_surface functions into their own headers.
Sam Lantinga <slouken@libsdl.org>
parents: 2267
diff changeset
652 */
12ea0fdc0df2 Split out the SDL_rect and SDL_surface functions into their own headers.
Sam Lantinga <slouken@libsdl.org>
parents: 2267
diff changeset
653 unsigned v;
12ea0fdc0df2 Split out the SDL_rect and SDL_surface functions into their own headers.
Sam Lantinga <slouken@libsdl.org>
parents: 2267
diff changeset
654 v = (pixel & format->Rmask) >> format->Rshift;
12ea0fdc0df2 Split out the SDL_rect and SDL_surface functions into their own headers.
Sam Lantinga <slouken@libsdl.org>
parents: 2267
diff changeset
655 *r = (v << format->Rloss) + (v >> (8 - (format->Rloss << 1)));
12ea0fdc0df2 Split out the SDL_rect and SDL_surface functions into their own headers.
Sam Lantinga <slouken@libsdl.org>
parents: 2267
diff changeset
656 v = (pixel & format->Gmask) >> format->Gshift;
12ea0fdc0df2 Split out the SDL_rect and SDL_surface functions into their own headers.
Sam Lantinga <slouken@libsdl.org>
parents: 2267
diff changeset
657 *g = (v << format->Gloss) + (v >> (8 - (format->Gloss << 1)));
12ea0fdc0df2 Split out the SDL_rect and SDL_surface functions into their own headers.
Sam Lantinga <slouken@libsdl.org>
parents: 2267
diff changeset
658 v = (pixel & format->Bmask) >> format->Bshift;
12ea0fdc0df2 Split out the SDL_rect and SDL_surface functions into their own headers.
Sam Lantinga <slouken@libsdl.org>
parents: 2267
diff changeset
659 *b = (v << format->Bloss) + (v >> (8 - (format->Bloss << 1)));
12ea0fdc0df2 Split out the SDL_rect and SDL_surface functions into their own headers.
Sam Lantinga <slouken@libsdl.org>
parents: 2267
diff changeset
660 } else {
12ea0fdc0df2 Split out the SDL_rect and SDL_surface functions into their own headers.
Sam Lantinga <slouken@libsdl.org>
parents: 2267
diff changeset
661 *r = format->palette->colors[pixel].r;
12ea0fdc0df2 Split out the SDL_rect and SDL_surface functions into their own headers.
Sam Lantinga <slouken@libsdl.org>
parents: 2267
diff changeset
662 *g = format->palette->colors[pixel].g;
12ea0fdc0df2 Split out the SDL_rect and SDL_surface functions into their own headers.
Sam Lantinga <slouken@libsdl.org>
parents: 2267
diff changeset
663 *b = format->palette->colors[pixel].b;
12ea0fdc0df2 Split out the SDL_rect and SDL_surface functions into their own headers.
Sam Lantinga <slouken@libsdl.org>
parents: 2267
diff changeset
664 }
12ea0fdc0df2 Split out the SDL_rect and SDL_surface functions into their own headers.
Sam Lantinga <slouken@libsdl.org>
parents: 2267
diff changeset
665 }
12ea0fdc0df2 Split out the SDL_rect and SDL_surface functions into their own headers.
Sam Lantinga <slouken@libsdl.org>
parents: 2267
diff changeset
666
12ea0fdc0df2 Split out the SDL_rect and SDL_surface functions into their own headers.
Sam Lantinga <slouken@libsdl.org>
parents: 2267
diff changeset
667 void
12ea0fdc0df2 Split out the SDL_rect and SDL_surface functions into their own headers.
Sam Lantinga <slouken@libsdl.org>
parents: 2267
diff changeset
668 SDL_GetRGBA(Uint32 pixel, const SDL_PixelFormat * format,
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
669 Uint8 * r, Uint8 * g, Uint8 * b, Uint8 * a)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
670 {
2275
12ea0fdc0df2 Split out the SDL_rect and SDL_surface functions into their own headers.
Sam Lantinga <slouken@libsdl.org>
parents: 2267
diff changeset
671 if (format->palette == NULL) {
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
672 /*
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
673 * This makes sure that the result is mapped to the
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
674 * interval [0..255], and the maximum value for each
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
675 * component is 255. This is important to make sure
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
676 * that white is indeed reported as (255, 255, 255),
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
677 * and that opaque alpha is 255.
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
678 * This only works for RGB bit fields at least 4 bit
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
679 * wide, which is almost always the case.
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
680 */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
681 unsigned v;
2275
12ea0fdc0df2 Split out the SDL_rect and SDL_surface functions into their own headers.
Sam Lantinga <slouken@libsdl.org>
parents: 2267
diff changeset
682 v = (pixel & format->Rmask) >> format->Rshift;
12ea0fdc0df2 Split out the SDL_rect and SDL_surface functions into their own headers.
Sam Lantinga <slouken@libsdl.org>
parents: 2267
diff changeset
683 *r = (v << format->Rloss) + (v >> (8 - (format->Rloss << 1)));
12ea0fdc0df2 Split out the SDL_rect and SDL_surface functions into their own headers.
Sam Lantinga <slouken@libsdl.org>
parents: 2267
diff changeset
684 v = (pixel & format->Gmask) >> format->Gshift;
12ea0fdc0df2 Split out the SDL_rect and SDL_surface functions into their own headers.
Sam Lantinga <slouken@libsdl.org>
parents: 2267
diff changeset
685 *g = (v << format->Gloss) + (v >> (8 - (format->Gloss << 1)));
12ea0fdc0df2 Split out the SDL_rect and SDL_surface functions into their own headers.
Sam Lantinga <slouken@libsdl.org>
parents: 2267
diff changeset
686 v = (pixel & format->Bmask) >> format->Bshift;
12ea0fdc0df2 Split out the SDL_rect and SDL_surface functions into their own headers.
Sam Lantinga <slouken@libsdl.org>
parents: 2267
diff changeset
687 *b = (v << format->Bloss) + (v >> (8 - (format->Bloss << 1)));
12ea0fdc0df2 Split out the SDL_rect and SDL_surface functions into their own headers.
Sam Lantinga <slouken@libsdl.org>
parents: 2267
diff changeset
688 if (format->Amask) {
12ea0fdc0df2 Split out the SDL_rect and SDL_surface functions into their own headers.
Sam Lantinga <slouken@libsdl.org>
parents: 2267
diff changeset
689 v = (pixel & format->Amask) >> format->Ashift;
12ea0fdc0df2 Split out the SDL_rect and SDL_surface functions into their own headers.
Sam Lantinga <slouken@libsdl.org>
parents: 2267
diff changeset
690 *a = (v << format->Aloss) + (v >> (8 - (format->Aloss << 1)));
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
691 } else {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
692 *a = SDL_ALPHA_OPAQUE;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
693 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
694 } else {
2275
12ea0fdc0df2 Split out the SDL_rect and SDL_surface functions into their own headers.
Sam Lantinga <slouken@libsdl.org>
parents: 2267
diff changeset
695 *r = format->palette->colors[pixel].r;
12ea0fdc0df2 Split out the SDL_rect and SDL_surface functions into their own headers.
Sam Lantinga <slouken@libsdl.org>
parents: 2267
diff changeset
696 *g = format->palette->colors[pixel].g;
12ea0fdc0df2 Split out the SDL_rect and SDL_surface functions into their own headers.
Sam Lantinga <slouken@libsdl.org>
parents: 2267
diff changeset
697 *b = format->palette->colors[pixel].b;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
698 *a = SDL_ALPHA_OPAQUE;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
699 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
700 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
701
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
702 /* Apply gamma to a set of colors - this is easy. :) */
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
703 void
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
704 SDL_ApplyGamma(Uint16 * gamma, SDL_Color * colors, SDL_Color * output,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
705 int ncolors)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
706 {
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
707 int i;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
708
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
709 for (i = 0; i < ncolors; ++i) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
710 output[i].r = gamma[0 * 256 + colors[i].r] >> 8;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
711 output[i].g = gamma[1 * 256 + colors[i].g] >> 8;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
712 output[i].b = gamma[2 * 256 + colors[i].b] >> 8;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
713 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
714 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
715
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
716 /* Map from Palette to Palette */
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
717 static Uint8 *
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
718 Map1to1(SDL_Palette * src, SDL_Palette * dst, int *identical)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
719 {
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
720 Uint8 *map;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
721 int i;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
722
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
723 if (identical) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
724 if (src->ncolors <= dst->ncolors) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
725 /* If an identical palette, no need to map */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
726 if (src == dst
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
727 ||
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
728 (SDL_memcmp
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
729 (src->colors, dst->colors,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
730 src->ncolors * sizeof(SDL_Color)) == 0)) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
731 *identical = 1;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
732 return (NULL);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
733 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
734 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
735 *identical = 0;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
736 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
737 map = (Uint8 *) SDL_malloc(src->ncolors);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
738 if (map == NULL) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
739 SDL_OutOfMemory();
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
740 return (NULL);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
741 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
742 for (i = 0; i < src->ncolors; ++i) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
743 map[i] = SDL_FindColor(dst,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
744 src->colors[i].r, src->colors[i].g,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
745 src->colors[i].b);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
746 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
747 return (map);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
748 }
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
749
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
750 /* Map from Palette to BitField */
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
751 static Uint8 *
2267
c785543d1843 Okay, still some bugs, but everything builds again...
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
752 Map1toN(SDL_PixelFormat * src, Uint8 Rmod, Uint8 Gmod, Uint8 Bmod, Uint8 Amod,
c785543d1843 Okay, still some bugs, but everything builds again...
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
753 SDL_PixelFormat * dst)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
754 {
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
755 Uint8 *map;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
756 int i;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
757 int bpp;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
758 SDL_Palette *pal = src->palette;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
759
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
760 bpp = ((dst->BytesPerPixel == 3) ? 4 : dst->BytesPerPixel);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
761 map = (Uint8 *) SDL_malloc(pal->ncolors * bpp);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
762 if (map == NULL) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
763 SDL_OutOfMemory();
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
764 return (NULL);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
765 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
766
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
767 /* We memory copy to the pixel map so the endianness is preserved */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
768 for (i = 0; i < pal->ncolors; ++i) {
2257
340942cfda48 Moved the colorkey and per-surface alpha into the blit info,
Sam Lantinga <slouken@libsdl.org>
parents: 2120
diff changeset
769 Uint8 A = Amod;
2267
c785543d1843 Okay, still some bugs, but everything builds again...
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
770 Uint8 R = (Uint8) ((pal->colors[i].r * Rmod) / 255);
c785543d1843 Okay, still some bugs, but everything builds again...
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
771 Uint8 G = (Uint8) ((pal->colors[i].g * Gmod) / 255);
c785543d1843 Okay, still some bugs, but everything builds again...
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
772 Uint8 B = (Uint8) ((pal->colors[i].b * Bmod) / 255);
2257
340942cfda48 Moved the colorkey and per-surface alpha into the blit info,
Sam Lantinga <slouken@libsdl.org>
parents: 2120
diff changeset
773 ASSEMBLE_RGBA(&map[i * bpp], dst->BytesPerPixel, dst, R, G, B, A);
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
774 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
775 return (map);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
776 }
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
777
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
778 /* Map from BitField to Dithered-Palette to Palette */
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
779 static Uint8 *
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
780 MapNto1(SDL_PixelFormat * src, SDL_PixelFormat * dst, int *identical)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
781 {
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
782 /* Generate a 256 color dither palette */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
783 SDL_Palette dithered;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
784 SDL_Color colors[256];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
785 SDL_Palette *pal = dst->palette;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
786
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
787 dithered.ncolors = 256;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
788 SDL_DitherColors(colors, 8);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
789 dithered.colors = colors;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
790 return (Map1to1(&dithered, pal, identical));
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
791 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
792
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
793 SDL_BlitMap *
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
794 SDL_AllocBlitMap(void)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
795 {
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
796 SDL_BlitMap *map;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
797
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
798 /* Allocate the empty map */
1920
8a162bfdc838 Convert SDL_malloc to SDL_calloc if appropriate, slightly faster on operating systems which map the zero page for memory allocations.
Sam Lantinga <slouken@libsdl.org>
parents: 1895
diff changeset
799 map = (SDL_BlitMap *) SDL_calloc(1, sizeof(*map));
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
800 if (map == NULL) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
801 SDL_OutOfMemory();
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
802 return (NULL);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
803 }
2267
c785543d1843 Okay, still some bugs, but everything builds again...
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
804 map->info.r = 0xFF;
c785543d1843 Okay, still some bugs, but everything builds again...
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
805 map->info.g = 0xFF;
c785543d1843 Okay, still some bugs, but everything builds again...
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
806 map->info.b = 0xFF;
c785543d1843 Okay, still some bugs, but everything builds again...
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
807 map->info.a = 0xFF;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
808
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
809 /* It's ready to go */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
810 return (map);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
811 }
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
812
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
813 void
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
814 SDL_InvalidateMap(SDL_BlitMap * map)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
815 {
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
816 if (!map) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
817 return;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
818 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
819 map->dst = NULL;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
820 map->format_version = (unsigned int) -1;
2267
c785543d1843 Okay, still some bugs, but everything builds again...
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
821 if (map->info.table) {
c785543d1843 Okay, still some bugs, but everything builds again...
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
822 SDL_free(map->info.table);
c785543d1843 Okay, still some bugs, but everything builds again...
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
823 map->info.table = NULL;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
824 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
825 }
2735
204be4fc2726 Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2275
diff changeset
826
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
827 int
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
828 SDL_MapSurface(SDL_Surface * src, SDL_Surface * dst)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
829 {
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
830 SDL_PixelFormat *srcfmt;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
831 SDL_PixelFormat *dstfmt;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
832 SDL_BlitMap *map;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
833
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
834 /* Clear out any previous mapping */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
835 map = src->map;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
836 if ((src->flags & SDL_RLEACCEL) == SDL_RLEACCEL) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
837 SDL_UnRLESurface(src, 1);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
838 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
839 SDL_InvalidateMap(map);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
840
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
841 /* Figure out what kind of mapping we're doing */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
842 map->identity = 0;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
843 srcfmt = src->format;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
844 dstfmt = dst->format;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
845 switch (srcfmt->BytesPerPixel) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
846 case 1:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
847 switch (dstfmt->BytesPerPixel) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
848 case 1:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
849 /* Palette --> Palette */
2267
c785543d1843 Okay, still some bugs, but everything builds again...
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
850 map->info.table =
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
851 Map1to1(srcfmt->palette, dstfmt->palette, &map->identity);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
852 if (!map->identity) {
2267
c785543d1843 Okay, still some bugs, but everything builds again...
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
853 if (map->info.table == NULL) {
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
854 return (-1);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
855 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
856 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
857 if (srcfmt->BitsPerPixel != dstfmt->BitsPerPixel)
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
858 map->identity = 0;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
859 break;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
860
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
861 default:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
862 /* Palette --> BitField */
2267
c785543d1843 Okay, still some bugs, but everything builds again...
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
863 map->info.table =
c785543d1843 Okay, still some bugs, but everything builds again...
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
864 Map1toN(srcfmt, src->map->info.r, src->map->info.g,
c785543d1843 Okay, still some bugs, but everything builds again...
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
865 src->map->info.b, src->map->info.a, dstfmt);
c785543d1843 Okay, still some bugs, but everything builds again...
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
866 if (map->info.table == NULL) {
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
867 return (-1);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
868 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
869 break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
870 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
871 break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
872 default:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
873 switch (dstfmt->BytesPerPixel) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
874 case 1:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
875 /* BitField --> Palette */
2267
c785543d1843 Okay, still some bugs, but everything builds again...
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
876 map->info.table = MapNto1(srcfmt, dstfmt, &map->identity);
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
877 if (!map->identity) {
2267
c785543d1843 Okay, still some bugs, but everything builds again...
Sam Lantinga <slouken@libsdl.org>
parents: 2260
diff changeset
878 if (map->info.table == NULL) {
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
879 return (-1);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
880 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
881 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
882 map->identity = 0; /* Don't optimize to copy */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
883 break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
884 default:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
885 /* BitField --> BitField */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
886 if (FORMAT_EQUAL(srcfmt, dstfmt))
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
887 map->identity = 1;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
888 break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
889 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
890 break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
891 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
892
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
893 map->dst = dst;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
894 map->format_version = dst->format_version;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
895
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
896 /* Choose your blitters wisely */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
897 return (SDL_CalculateBlit(src));
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
898 }
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
899
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
900 void
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
901 SDL_FreeBlitMap(SDL_BlitMap * map)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
902 {
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
903 if (map) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
904 SDL_InvalidateMap(map);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
905 SDL_free(map);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
906 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
907 }
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
908
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
909 /* vi: set ts=4 sw=4 expandtab: */