Mercurial > sdl-ios-xcode

annotate src/video/SDL_pixels.c @ 1734:f7c667ded87d SDL-1.3

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The general code handles restoring video mode/gamma/etc. when the window loses focus. Support for changing fullscreen/windowed mode in progress.
author Sam Lantinga <slouken@libsdl.org>
date Sun, 09 Jul 2006 18:09:16 +0000
parents 1577404809f0
children
rev   line source
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2006 Sam Lantinga
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4
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5 This library is free software; you can redistribute it and/or
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6 modify it under the terms of the GNU Lesser General Public
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7 License as published by the Free Software Foundation; either
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8 version 2.1 of the License, or (at your option) any later version.
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9
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10 This library is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 Lesser General Public License for more details.
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14
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15 You should have received a copy of the GNU Lesser General Public
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16 License along with this library; if not, write to the Free Software
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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18
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19 Sam Lantinga
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20 slouken@libsdl.org
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21 */
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22 #include "SDL_config.h"
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23
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24 /* 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 /* Helper functions */
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34
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35 SDL_bool
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36 SDL_PixelFormatEnumToMasks(Uint32 format, int *bpp, Uint32 * Rmask,
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37 Uint32 * Gmask, Uint32 * Bmask, Uint32 * Amask)
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38 {
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39 Uint32 masks[4];
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40
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41 /* Initialize the values here */
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42 if (SDL_BITSPERPIXEL(format) == 24) {
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43 *bpp = SDL_BYTESPERPIXEL(format) * 8;
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44 } else {
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45 *bpp = SDL_BITSPERPIXEL(format);
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46 }
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47 *Rmask = *Gmask = *Bmask = *Amask = 0;
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48
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49 if (SDL_PIXELTYPE(format) != SDL_PixelType_Packed8 &&
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50 SDL_PIXELTYPE(format) != SDL_PixelType_Packed16 &&
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51 SDL_PIXELTYPE(format) != SDL_PixelType_Packed32) {
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52 /* Not a format that uses masks */
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53 return SDL_TRUE;
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54 }
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55
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56 switch (SDL_PIXELLAYOUT(format)) {
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57 case SDL_PackedLayout_332:
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58 masks[0] = 0x00000000;
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59 masks[1] = 0x000000E0;
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60 masks[2] = 0x0000001C;
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61 masks[3] = 0x00000003;
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62 break;
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63 case SDL_PackedLayout_4444:
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64 masks[0] = 0x0000F000;
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65 masks[1] = 0x00000F00;
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66 masks[2] = 0x000000F0;
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67 masks[3] = 0x0000000F;
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68 break;
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69 case SDL_PackedLayout_1555:
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70 masks[0] = 0x00008000;
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71 masks[1] = 0x00007C00;
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72 masks[2] = 0x000003E0;
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73 masks[3] = 0x0000001F;
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74 break;
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75 case SDL_PackedLayout_565:
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76 masks[0] = 0x00000000;
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77 masks[1] = 0x0000F800;
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78 masks[2] = 0x000007E0;
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79 masks[3] = 0x0000001F;
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80 break;
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81 case SDL_PackedLayout_8888:
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82 masks[0] = 0xFF000000;
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83 masks[1] = 0x00FF0000;
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84 masks[2] = 0x0000FF00;
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85 masks[3] = 0x000000FF;
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86 break;
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87 case SDL_PackedLayout_2101010:
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88 masks[0] = 0xC0000000;
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89 masks[1] = 0x3FF00000;
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90 masks[2] = 0x000FFC00;
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91 masks[3] = 0x000003FF;
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92 break;
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93 default:
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94 /* Unknown layout */
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95 return SDL_FALSE;
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96 }
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97
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98 switch (SDL_PIXELORDER(format)) {
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99 case SDL_PackedOrder_XRGB:
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100 *Rmask = masks[1];
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101 *Gmask = masks[2];
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102 *Bmask = masks[3];
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103 break;
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104 case SDL_PackedOrder_RGBX:
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105 *Rmask = masks[0];
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106 *Gmask = masks[1];
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107 *Bmask = masks[2];
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108 break;
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109 case SDL_PackedOrder_ARGB:
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110 *Amask = masks[0];
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111 *Rmask = masks[1];
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112 *Gmask = masks[2];
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113 *Bmask = masks[3];
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114 break;
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115 case SDL_PackedOrder_RGBA:
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116 *Rmask = masks[0];
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117 *Gmask = masks[1];
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118 *Bmask = masks[2];
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119 *Amask = masks[3];
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120 break;
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121 case SDL_PackedOrder_XBGR:
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122 *Bmask = masks[1];
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
123 *Gmask = masks[2];
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
124 *Rmask = masks[3];
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
125 break;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
126 case SDL_PackedOrder_BGRX:
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
127 *Bmask = masks[0];
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
128 *Gmask = masks[1];
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
129 *Rmask = masks[2];
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
130 break;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
131 case SDL_PackedOrder_BGRA:
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
132 *Bmask = masks[0];
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
133 *Gmask = masks[1];
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
134 *Rmask = masks[2];
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
135 *Amask = masks[3];
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
136 break;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
137 case SDL_PackedOrder_ABGR:
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
138 *Amask = masks[0];
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
139 *Bmask = masks[1];
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
140 *Gmask = masks[2];
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
141 *Rmask = masks[3];
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
142 break;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
143 default:
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
144 /* Unknown order */
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
145 return SDL_FALSE;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
146 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
147 return SDL_TRUE;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
148 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
149
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
150 Uint32
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1662
diff changeset
151 SDL_MasksToPixelFormatEnum(int bpp, Uint32 Rmask, Uint32 Gmask, Uint32 Bmask,
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1662
diff changeset
152 Uint32 Amask)
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
153 {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
154 switch (bpp) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
155 case 8:
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
156 switch (Rmask) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
157 case 0:
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
158 return SDL_PixelFormat_Index8;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
159 case 0xE0:
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
160 return SDL_PixelFormat_RGB332;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
161 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
162 break;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
163 case 12:
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
164 switch (Rmask) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
165 case 0x0F00:
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
166 return SDL_PixelFormat_RGB444;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
167 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
168 break;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
169 case 15:
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
170 switch (Rmask) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
171 case 0x7C00:
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
172 return SDL_PixelFormat_RGB555;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
173 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
174 break;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
175 case 16:
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
176 switch (Rmask) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
177 case 0x0F00:
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
178 return SDL_PixelFormat_ARGB4444;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
179 case 0x7C00:
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
180 return SDL_PixelFormat_ARGB1555;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
181 case 0xF800:
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
182 return SDL_PixelFormat_RGB565;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
183 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
184 break;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
185 case 32:
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
186 switch (Rmask) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
187 case 0xFF000000:
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
188 if (Amask == 0x000000FF) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
189 return SDL_PixelFormat_RGBA8888;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
190 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
191 break;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
192 case 0x00FF0000:
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
193 if (Amask == 0xFF000000) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
194 return SDL_PixelFormat_ARGB8888;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
195 } else {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
196 return SDL_PixelFormat_RGB888;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
197 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
198 break;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
199 case 0x0000FF00:
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
200 if (Amask == 0x000000FF) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
201 return SDL_PixelFormat_BGRA8888;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
202 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
203 break;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
204 case 0x000000FF:
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
205 if (Amask == 0xFF000000) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
206 return SDL_PixelFormat_ABGR8888;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
207 } else {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
208 return SDL_PixelFormat_BGR888;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
209 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
210 break;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
211 case 0x3FF00000:
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
212 return SDL_PixelFormat_ARGB2101010;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
213 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
214 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
215 return SDL_PixelFormat_Unknown;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
216 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
217
1683
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
218
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
219 SDL_Palette *
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
220 SDL_AllocPalette(int ncolors)
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
221 {
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
222 SDL_Palette *palette;
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
223
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
224 palette = (SDL_Palette *) SDL_malloc(sizeof(*palette));
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
225 if (!palette) {
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
226 SDL_OutOfMemory();
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
227 return NULL;
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
228 }
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
229 palette->colors =
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
230 (SDL_Color *) SDL_malloc(ncolors * sizeof(*palette->colors));
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
231 if (!palette->colors) {
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
232 SDL_free(palette);
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
233 return NULL;
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
234 }
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
235 palette->ncolors = ncolors;
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
236 palette->watch = NULL;
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
237 palette->refcount = 1;
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
238
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
239 SDL_memset(palette->colors, 0xFF, ncolors * sizeof(*palette->colors));
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
240
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
241 return palette;
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
242 }
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
243
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
244 int
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
245 SDL_AddPaletteWatch(SDL_Palette * palette, SDL_PaletteChangedFunc callback,
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
246 void *userdata)
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
247 {
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
248 SDL_PaletteWatch *watch;
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
249
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
250 if (!palette) {
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
251 return -1;
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
252 }
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
253
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
254 watch = (SDL_PaletteWatch *) SDL_malloc(sizeof(*watch));
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
255 if (!watch) {
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
256 SDL_OutOfMemory();
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
257 return -1;
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
258 }
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
259
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
260 watch->callback = callback;
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
261 watch->userdata = userdata;
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
262 watch->next = palette->watch;
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
263 palette->watch = watch;
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
264 ++palette->refcount;
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
265 return 0;
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
266 }
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
267
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
268 void
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
269 SDL_DelPaletteWatch(SDL_Palette * palette, SDL_PaletteChangedFunc callback,
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
270 void *userdata)
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
271 {
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
272 SDL_PaletteWatch *prev, *watch;
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
273
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
274 if (!palette) {
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
275 return;
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
276 }
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
277
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
278 for (prev = NULL, watch = palette->watch; watch;
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
279 prev = watch, watch = watch->next) {
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
280 if (watch->callback == callback && watch->userdata == userdata) {
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
281 if (prev) {
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
282 prev->next = watch->next;
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
283 } else {
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
284 palette->watch = watch->next;
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
285 }
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
286 SDL_free(watch);
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
287 SDL_FreePalette(palette);
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
288 return;
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
289 }
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
290 }
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
291 }
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
292
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
293 int
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
294 SDL_SetPaletteColors(SDL_Palette * palette, const SDL_Color * colors,
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
295 int firstcolor, int ncolors)
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
296 {
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
297 SDL_PaletteWatch *watch;
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
298 int status = 0;
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
299
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
300 /* Verify the parameters */
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
301 if (!palette) {
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
302 return -1;
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
303 }
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
304 if (ncolors > (palette->ncolors - firstcolor)) {
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
305 ncolors = (palette->ncolors - firstcolor);
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
306 status = -1;
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
307 }
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
308
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
309 if (colors != (palette->colors + firstcolor)) {
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
310 SDL_memcpy(palette->colors + firstcolor, colors,
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
311 ncolors * sizeof(*colors));
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
312 }
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
313
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
314 for (watch = palette->watch; watch; watch = watch->next) {
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
315 if (watch->callback(watch->userdata, palette) < 0) {
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
316 status = -1;
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
317 }
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
318 }
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
319
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
320 return status;
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
321 }
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
322
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
323 void
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
324 SDL_FreePalette(SDL_Palette * palette)
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
325 {
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
326 if (!palette) {
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
327 return;
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
328 }
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
329 if (--palette->refcount > 0) {
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
330 return;
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
331 }
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
332 if (palette->colors) {
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
333 SDL_free(palette->colors);
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
334 }
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
335 SDL_free(palette);
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
336 }
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
337
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
338 /*
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
339 * Allocate a pixel format structure and fill it according to the given info.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
340 */
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
341 SDL_PixelFormat *
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1662
diff changeset
342 SDL_AllocFormat(int bpp,
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1662
diff changeset
343 Uint32 Rmask, Uint32 Gmask, Uint32 Bmask, Uint32 Amask)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
344 {
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
345 SDL_PixelFormat *format;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
346 Uint32 mask;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
347
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
348 /* Allocate an empty pixel format structure */
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1662
diff changeset
349 format = SDL_malloc(sizeof(*format));
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
350 if (format == NULL) {
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1662
diff changeset
351 SDL_OutOfMemory();
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
352 return (NULL);
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
353 }
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1662
diff changeset
354 SDL_memset(format, 0, sizeof(*format));
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
355 format->alpha = SDL_ALPHA_OPAQUE;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
356
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
357 /* Set up the format */
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
358 format->BitsPerPixel = bpp;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
359 format->BytesPerPixel = (bpp + 7) / 8;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
360 if (Rmask || Bmask || Gmask) { /* Packed pixels with custom mask */
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
361 format->Rshift = 0;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
362 format->Rloss = 8;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
363 if (Rmask) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
364 for (mask = Rmask; !(mask & 0x01); mask >>= 1)
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
365 ++format->Rshift;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
366 for (; (mask & 0x01); mask >>= 1)
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
367 --format->Rloss;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
368 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
369 format->Gshift = 0;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
370 format->Gloss = 8;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
371 if (Gmask) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
372 for (mask = Gmask; !(mask & 0x01); mask >>= 1)
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
373 ++format->Gshift;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
374 for (; (mask & 0x01); mask >>= 1)
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
375 --format->Gloss;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
376 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
377 format->Bshift = 0;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
378 format->Bloss = 8;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
379 if (Bmask) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
380 for (mask = Bmask; !(mask & 0x01); mask >>= 1)
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
381 ++format->Bshift;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
382 for (; (mask & 0x01); mask >>= 1)
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
383 --format->Bloss;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
384 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
385 format->Ashift = 0;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
386 format->Aloss = 8;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
387 if (Amask) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
388 for (mask = Amask; !(mask & 0x01); mask >>= 1)
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
389 ++format->Ashift;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
390 for (; (mask & 0x01); mask >>= 1)
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
391 --format->Aloss;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
392 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
393 format->Rmask = Rmask;
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diff changeset
394 format->Gmask = Gmask;
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diff changeset
395 format->Bmask = Bmask;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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diff changeset
396 format->Amask = Amask;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
397 } else if (bpp > 8) { /* Packed pixels with standard mask */
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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parents: 1557
diff changeset
398 /* R-G-B */
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
399 if (bpp > 24)
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Sam Lantinga <slouken@libsdl.org>
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diff changeset
400 bpp = 24;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
401 format->Rloss = 8 - (bpp / 3);
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
402 format->Gloss = 8 - (bpp / 3) - (bpp % 3);
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
403 format->Bloss = 8 - (bpp / 3);
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
404 format->Rshift = ((bpp / 3) + (bpp % 3)) + (bpp / 3);
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
405 format->Gshift = (bpp / 3);
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
406 format->Bshift = 0;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
407 format->Rmask = ((0xFF >> format->Rloss) << format->Rshift);
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
408 format->Gmask = ((0xFF >> format->Gloss) << format->Gshift);
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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diff changeset
409 format->Bmask = ((0xFF >> format->Bloss) << format->Bshift);
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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diff changeset
410 } else {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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diff changeset
411 /* Palettized formats have no mask info */
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
412 format->Rloss = 8;
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Sam Lantinga <slouken@libsdl.org>
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diff changeset
413 format->Gloss = 8;
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diff changeset
414 format->Bloss = 8;
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Sam Lantinga <slouken@libsdl.org>
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diff changeset
415 format->Aloss = 8;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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diff changeset
416 format->Rshift = 0;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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diff changeset
417 format->Gshift = 0;
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Sam Lantinga <slouken@libsdl.org>
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diff changeset
418 format->Bshift = 0;
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diff changeset
419 format->Ashift = 0;
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420 format->Rmask = 0;
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diff changeset
421 format->Gmask = 0;
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diff changeset
422 format->Bmask = 0;
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diff changeset
423 format->Amask = 0;
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Sam Lantinga <slouken@libsdl.org>
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diff changeset
424 }
1683
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
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diff changeset
425 format->palette = NULL;
1057
e9d23bb80140 Date: Mon, 02 May 2005 04:23:16 -0500
Sam Lantinga <slouken@libsdl.org>
parents: 1027
diff changeset
426
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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diff changeset
427 return (format);
0
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diff changeset
428 }
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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diff changeset
429
0
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parents:
diff changeset
430 /*
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parents:
diff changeset
431 * Change any previous mappings from/to the new surface format
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diff changeset
432 */
1662
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diff changeset
433 void
1668
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diff changeset
434 SDL_FormatChanged(SDL_Surface * surface)
0
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parents:
diff changeset
435 {
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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diff changeset
436 static int format_version = 0;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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diff changeset
437 ++format_version;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
438 if (format_version < 0) { /* It wrapped... */
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
439 format_version = 1;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
440 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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diff changeset
441 surface->format_version = format_version;
1668
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diff changeset
442 SDL_InvalidateMap(surface->map);
0
74212992fb08 Initial revision
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parents:
diff changeset
443 }
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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diff changeset
444
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
445 /*
74212992fb08 Initial revision
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parents:
diff changeset
446 * Free a previously allocated format structure
74212992fb08 Initial revision
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parents:
diff changeset
447 */
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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diff changeset
448 void
1668
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diff changeset
449 SDL_FreeFormat(SDL_PixelFormat * format)
0
74212992fb08 Initial revision
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parents:
diff changeset
450 {
1683
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
451 if (!format) {
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
452 return;
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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diff changeset
453 }
1683
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
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diff changeset
454 SDL_free(format);
0
74212992fb08 Initial revision
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parents:
diff changeset
455 }
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
456
0
74212992fb08 Initial revision
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parents:
diff changeset
457 /*
74212992fb08 Initial revision
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parents:
diff changeset
458 * Calculate an 8-bit (3 red, 3 green, 2 blue) dithered palette of colors
74212992fb08 Initial revision
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parents:
diff changeset
459 */
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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diff changeset
460 void
1668
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diff changeset
461 SDL_DitherColors(SDL_Color * colors, int bpp)
0
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parents:
diff changeset
462 {
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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diff changeset
463 int i;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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diff changeset
464 if (bpp != 8)
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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diff changeset
465 return; /* only 8bpp supported right now */
0
74212992fb08 Initial revision
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parents:
diff changeset
466
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
467 for (i = 0; i < 256; i++) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
468 int r, g, b;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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diff changeset
469 /* map each bit field to the full [0, 255] interval,
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
470 so 0 is mapped to (0, 0, 0) and 255 to (255, 255, 255) */
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
471 r = i & 0xe0;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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diff changeset
472 r |= r >> 3 | r >> 6;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
473 colors[i].r = r;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
474 g = (i << 3) & 0xe0;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
475 g |= g >> 3 | g >> 6;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
476 colors[i].g = g;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
477 b = i & 0x3;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
478 b |= b << 2;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
479 b |= b << 4;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
480 colors[i].b = b;
1682
7ae8018b2e5d Default palette entries to white, instead of black.
Sam Lantinga <slouken@libsdl.org>
parents: 1670
diff changeset
481 colors[i].unused = SDL_ALPHA_OPAQUE;
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
482 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
483 }
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
484
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
485 /*
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
486 * Calculate the pad-aligned scanline width of a surface
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
487 */
1670
eef792d31de8 Work in progress. :)
Sam Lantinga <slouken@libsdl.org>
parents: 1668
diff changeset
488 int
1668
4da1ee79c9af more tweaking indent options
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parents: 1662
diff changeset
489 SDL_CalculatePitch(SDL_Surface * surface)
0
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parents:
diff changeset
490 {
1670
eef792d31de8 Work in progress. :)
Sam Lantinga <slouken@libsdl.org>
parents: 1668
diff changeset
491 int pitch;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
492
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
493 /* Surface should be 4-byte aligned for speed */
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
494 pitch = surface->w * surface->format->BytesPerPixel;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
495 switch (surface->format->BitsPerPixel) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
496 case 1:
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
497 pitch = (pitch + 7) / 8;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
498 break;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
499 case 4:
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
500 pitch = (pitch + 1) / 2;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
501 break;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
502 default:
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
503 break;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
504 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
505 pitch = (pitch + 3) & ~3; /* 4-byte aligning */
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
506 return (pitch);
0
74212992fb08 Initial revision
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parents:
diff changeset
507 }
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
508
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
509 /*
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
510 * Match an RGB value to a particular palette index
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
511 */
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
512 Uint8
1668
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parents: 1662
diff changeset
513 SDL_FindColor(SDL_Palette * pal, Uint8 r, Uint8 g, Uint8 b)
0
74212992fb08 Initial revision
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parents:
diff changeset
514 {
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
515 /* Do colorspace distance matching */
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
516 unsigned int smallest;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
517 unsigned int distance;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
518 int rd, gd, bd;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
519 int i;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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520 Uint8 pixel = 0;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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diff changeset
521
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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parents: 1557
diff changeset
522 smallest = ~0;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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diff changeset
523 for (i = 0; i < pal->ncolors; ++i) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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diff changeset
524 rd = pal->colors[i].r - r;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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diff changeset
525 gd = pal->colors[i].g - g;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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diff changeset
526 bd = pal->colors[i].b - b;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
527 distance = (rd * rd) + (gd * gd) + (bd * bd);
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
528 if (distance < smallest) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
529 pixel = i;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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parents: 1557
diff changeset
530 if (distance == 0) { /* Perfect match! */
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
531 break;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
532 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
533 smallest = distance;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
534 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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diff changeset
535 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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diff changeset
536 return (pixel);
0
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diff changeset
537 }
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parents:
diff changeset
538
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parents:
diff changeset
539 /* Find the opaque pixel value corresponding to an RGB triple */
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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diff changeset
540 Uint32
1668
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diff changeset
541 SDL_MapRGB(SDL_PixelFormat * format, Uint8 r, Uint8 g, Uint8 b)
0
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parents:
diff changeset
542 {
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
543 if (format->palette == NULL) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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diff changeset
544 return (r >> format->Rloss) << format->Rshift
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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parents: 1557
diff changeset
545 | (g >> format->Gloss) << format->Gshift
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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546 | (b >> format->Bloss) << format->Bshift | format->Amask;
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547 } else {
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548 return SDL_FindColor(format->palette, r, g, b);
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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diff changeset
549 }
0
74212992fb08 Initial revision
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diff changeset
550 }
74212992fb08 Initial revision
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parents:
diff changeset
551
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parents:
diff changeset
552 /* Find the pixel value corresponding to an RGBA quadruple */
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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diff changeset
553 Uint32
1668
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diff changeset
554 SDL_MapRGBA(SDL_PixelFormat * format, Uint8 r, Uint8 g, Uint8 b, Uint8 a)
0
74212992fb08 Initial revision
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parents:
diff changeset
555 {
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
556 if (format->palette == NULL) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
557 return (r >> format->Rloss) << format->Rshift
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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diff changeset
558 | (g >> format->Gloss) << format->Gshift
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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diff changeset
559 | (b >> format->Bloss) << format->Bshift
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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diff changeset
560 | ((a >> format->Aloss) << format->Ashift & format->Amask);
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
561 } else {
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diff changeset
562 return SDL_FindColor(format->palette, r, g, b);
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782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
563 }
0
74212992fb08 Initial revision
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diff changeset
564 }
74212992fb08 Initial revision
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parents:
diff changeset
565
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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diff changeset
566 void
1668
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diff changeset
567 SDL_GetRGBA(Uint32 pixel, SDL_PixelFormat * fmt,
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parents: 1662
diff changeset
568 Uint8 * r, Uint8 * g, Uint8 * b, Uint8 * a)
0
74212992fb08 Initial revision
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parents:
diff changeset
569 {
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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parents: 1557
diff changeset
570 if (fmt->palette == NULL) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
571 /*
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
572 * This makes sure that the result is mapped to the
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
573 * interval [0..255], and the maximum value for each
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
574 * component is 255. This is important to make sure
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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parents: 1557
diff changeset
575 * that white is indeed reported as (255, 255, 255),
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
576 * and that opaque alpha is 255.
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
577 * This only works for RGB bit fields at least 4 bit
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
578 * wide, which is almost always the case.
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
579 */
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
580 unsigned v;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
581 v = (pixel & fmt->Rmask) >> fmt->Rshift;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
582 *r = (v << fmt->Rloss) + (v >> (8 - (fmt->Rloss << 1)));
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
583 v = (pixel & fmt->Gmask) >> fmt->Gshift;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
584 *g = (v << fmt->Gloss) + (v >> (8 - (fmt->Gloss << 1)));
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
585 v = (pixel & fmt->Bmask) >> fmt->Bshift;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
586 *b = (v << fmt->Bloss) + (v >> (8 - (fmt->Bloss << 1)));
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
587 if (fmt->Amask) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
588 v = (pixel & fmt->Amask) >> fmt->Ashift;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
589 *a = (v << fmt->Aloss) + (v >> (8 - (fmt->Aloss << 1)));
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
590 } else {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
591 *a = SDL_ALPHA_OPAQUE;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
592 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
593 } else {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
594 *r = fmt->palette->colors[pixel].r;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
595 *g = fmt->palette->colors[pixel].g;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
596 *b = fmt->palette->colors[pixel].b;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
597 *a = SDL_ALPHA_OPAQUE;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
598 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
599 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
600
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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parents: 1557
diff changeset
601 void
1668
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parents: 1662
diff changeset
602 SDL_GetRGB(Uint32 pixel, SDL_PixelFormat * fmt, Uint8 * r, Uint8 * g,
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1662
diff changeset
603 Uint8 * b)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
604 {
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
605 if (fmt->palette == NULL) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
606 /* the note for SDL_GetRGBA above applies here too */
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
607 unsigned v;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
608 v = (pixel & fmt->Rmask) >> fmt->Rshift;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
609 *r = (v << fmt->Rloss) + (v >> (8 - (fmt->Rloss << 1)));
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
610 v = (pixel & fmt->Gmask) >> fmt->Gshift;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
611 *g = (v << fmt->Gloss) + (v >> (8 - (fmt->Gloss << 1)));
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
612 v = (pixel & fmt->Bmask) >> fmt->Bshift;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
613 *b = (v << fmt->Bloss) + (v >> (8 - (fmt->Bloss << 1)));
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
614 } else {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
615 *r = fmt->palette->colors[pixel].r;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
616 *g = fmt->palette->colors[pixel].g;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
617 *b = fmt->palette->colors[pixel].b;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
618 }
0
74212992fb08 Initial revision
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parents:
diff changeset
619 }
74212992fb08 Initial revision
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parents:
diff changeset
620
74212992fb08 Initial revision
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parents:
diff changeset
621 /* Apply gamma to a set of colors - this is easy. :) */
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
622 void
1668
4da1ee79c9af more tweaking indent options
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diff changeset
623 SDL_ApplyGamma(Uint16 * gamma, SDL_Color * colors, SDL_Color * output,
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parents: 1662
diff changeset
624 int ncolors)
0
74212992fb08 Initial revision
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parents:
diff changeset
625 {
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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diff changeset
626 int i;
0
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parents:
diff changeset
627
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
628 for (i = 0; i < ncolors; ++i) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
629 output[i].r = gamma[0 * 256 + colors[i].r] >> 8;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
630 output[i].g = gamma[1 * 256 + colors[i].g] >> 8;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
631 output[i].b = gamma[2 * 256 + colors[i].b] >> 8;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
632 }
0
74212992fb08 Initial revision
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parents:
diff changeset
633 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
634
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
635 /* Map from Palette to Palette */
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
636 static Uint8 *
1668
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diff changeset
637 Map1to1(SDL_Palette * src, SDL_Palette * dst, int *identical)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
638 {
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
639 Uint8 *map;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
640 int i;
0
74212992fb08 Initial revision
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parents:
diff changeset
641
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
642 if (identical) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
643 if (src->ncolors <= dst->ncolors) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
644 /* If an identical palette, no need to map */
1706
1577404809f0 Added a multi-window version of testsprite using the new API.
Sam Lantinga <slouken@libsdl.org>
parents: 1683
diff changeset
645 if (src == dst
1577404809f0 Added a multi-window version of testsprite using the new API.
Sam Lantinga <slouken@libsdl.org>
parents: 1683
diff changeset
646 ||
1577404809f0 Added a multi-window version of testsprite using the new API.
Sam Lantinga <slouken@libsdl.org>
parents: 1683
diff changeset
647 (SDL_memcmp
1577404809f0 Added a multi-window version of testsprite using the new API.
Sam Lantinga <slouken@libsdl.org>
parents: 1683
diff changeset
648 (src->colors, dst->colors,
1577404809f0 Added a multi-window version of testsprite using the new API.
Sam Lantinga <slouken@libsdl.org>
parents: 1683
diff changeset
649 src->ncolors * sizeof(SDL_Color)) == 0)) {
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
650 *identical = 1;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
651 return (NULL);
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
652 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
653 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
654 *identical = 0;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
655 }
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
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diff changeset
656 map = (Uint8 *) SDL_malloc(src->ncolors);
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782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
657 if (map == NULL) {
1668
4da1ee79c9af more tweaking indent options
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diff changeset
658 SDL_OutOfMemory();
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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diff changeset
659 return (NULL);
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
660 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
661 for (i = 0; i < src->ncolors; ++i) {
1668
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diff changeset
662 map[i] = SDL_FindColor(dst,
4da1ee79c9af more tweaking indent options
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diff changeset
663 src->colors[i].r, src->colors[i].g,
4da1ee79c9af more tweaking indent options
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parents: 1662
diff changeset
664 src->colors[i].b);
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782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
665 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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diff changeset
666 return (map);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
667 }
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782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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diff changeset
668
0
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parents:
diff changeset
669 /* Map from Palette to BitField */
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782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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diff changeset
670 static Uint8 *
1668
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diff changeset
671 Map1toN(SDL_PixelFormat * src, SDL_PixelFormat * dst)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
672 {
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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diff changeset
673 Uint8 *map;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
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diff changeset
674 int i;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
675 int bpp;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
676 unsigned alpha;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
677 SDL_Palette *pal = src->palette;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
678
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
679 bpp = ((dst->BytesPerPixel == 3) ? 4 : dst->BytesPerPixel);
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
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diff changeset
680 map = (Uint8 *) SDL_malloc(pal->ncolors * bpp);
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
681 if (map == NULL) {
1668
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parents: 1662
diff changeset
682 SDL_OutOfMemory();
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
683 return (NULL);
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
684 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
685
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
686 alpha = dst->Amask ? src->alpha : 0;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
687 /* We memory copy to the pixel map so the endianness is preserved */
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
688 for (i = 0; i < pal->ncolors; ++i) {
1668
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diff changeset
689 ASSEMBLE_RGBA(&map[i * bpp], dst->BytesPerPixel, dst,
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1662
diff changeset
690 pal->colors[i].r, pal->colors[i].g,
4da1ee79c9af more tweaking indent options
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parents: 1662
diff changeset
691 pal->colors[i].b, alpha);
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
692 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
693 return (map);
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
694 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
695
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
696 /* Map from BitField to Dithered-Palette to Palette */
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
697 static Uint8 *
1668
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diff changeset
698 MapNto1(SDL_PixelFormat * src, SDL_PixelFormat * dst, int *identical)
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
699 {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
700 /* Generate a 256 color dither palette */
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
701 SDL_Palette dithered;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
702 SDL_Color colors[256];
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
703 SDL_Palette *pal = dst->palette;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
704
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
705 dithered.ncolors = 256;
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1662
diff changeset
706 SDL_DitherColors(colors, 8);
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
707 dithered.colors = colors;
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1662
diff changeset
708 return (Map1to1(&dithered, pal, identical));
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
709 }
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
710
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
711 SDL_BlitMap *
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1662
diff changeset
712 SDL_AllocBlitMap(void)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
713 {
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
714 SDL_BlitMap *map;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
715
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
716 /* Allocate the empty map */
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1662
diff changeset
717 map = (SDL_BlitMap *) SDL_malloc(sizeof(*map));
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
718 if (map == NULL) {
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1662
diff changeset
719 SDL_OutOfMemory();
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
720 return (NULL);
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
721 }
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1662
diff changeset
722 SDL_memset(map, 0, sizeof(*map));
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
723
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
724 /* Allocate the software blit data */
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
725 map->sw_data =
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1662
diff changeset
726 (struct private_swaccel *) SDL_malloc(sizeof(*map->sw_data));
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
727 if (map->sw_data == NULL) {
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1662
diff changeset
728 SDL_FreeBlitMap(map);
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1662
diff changeset
729 SDL_OutOfMemory();
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
730 return (NULL);
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
731 }
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1662
diff changeset
732 SDL_memset(map->sw_data, 0, sizeof(*map->sw_data));
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
733
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
734 /* It's ready to go */
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
735 return (map);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
736 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
737
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
738 void
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1662
diff changeset
739 SDL_InvalidateMap(SDL_BlitMap * map)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
740 {
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
741 if (!map) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
742 return;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
743 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
744 map->dst = NULL;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
745 map->format_version = (unsigned int) -1;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
746 if (map->table) {
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1662
diff changeset
747 SDL_free(map->table);
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
748 map->table = NULL;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
749 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
750 }
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
751 int
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1662
diff changeset
752 SDL_MapSurface(SDL_Surface * src, SDL_Surface * dst)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
753 {
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
754 SDL_PixelFormat *srcfmt;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
755 SDL_PixelFormat *dstfmt;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
756 SDL_BlitMap *map;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
757
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
758 /* Clear out any previous mapping */
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
759 map = src->map;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
760 if ((src->flags & SDL_RLEACCEL) == SDL_RLEACCEL) {
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1662
diff changeset
761 SDL_UnRLESurface(src, 1);
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
762 }
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1662
diff changeset
763 SDL_InvalidateMap(map);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
764
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
765 /* Figure out what kind of mapping we're doing */
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
766 map->identity = 0;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
767 srcfmt = src->format;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
768 dstfmt = dst->format;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
769 switch (srcfmt->BytesPerPixel) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
770 case 1:
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
771 switch (dstfmt->BytesPerPixel) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
772 case 1:
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
773 /* Palette --> Palette */
1683
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
774 map->table =
396a35389351 Finished palettized display handling.
Sam Lantinga <slouken@libsdl.org>
parents: 1682
diff changeset
775 Map1to1(srcfmt->palette, dstfmt->palette, &map->identity);
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
776 if (!map->identity) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
777 if (map->table == NULL) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
778 return (-1);
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
779 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
780 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
781 if (srcfmt->BitsPerPixel != dstfmt->BitsPerPixel)
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
782 map->identity = 0;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
783 break;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
784
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
785 default:
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
786 /* Palette --> BitField */
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1662
diff changeset
787 map->table = Map1toN(srcfmt, dstfmt);
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
788 if (map->table == NULL) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
789 return (-1);
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
790 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
791 break;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
792 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
793 break;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
794 default:
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
795 switch (dstfmt->BytesPerPixel) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
796 case 1:
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
797 /* BitField --> Palette */
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1662
diff changeset
798 map->table = MapNto1(srcfmt, dstfmt, &map->identity);
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
799 if (!map->identity) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
800 if (map->table == NULL) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
801 return (-1);
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
802 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
803 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
804 map->identity = 0; /* Don't optimize to copy */
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
805 break;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
806 default:
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
807 /* BitField --> BitField */
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1662
diff changeset
808 if (FORMAT_EQUAL(srcfmt, dstfmt))
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
809 map->identity = 1;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
810 break;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
811 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
812 break;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
813 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
814
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
815 map->dst = dst;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
816 map->format_version = dst->format_version;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
817
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
818 /* Choose your blitters wisely */
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1662
diff changeset
819 return (SDL_CalculateBlit(src));
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
820 }
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
821
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
822 void
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1662
diff changeset
823 SDL_FreeBlitMap(SDL_BlitMap * map)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
824 {
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
825 if (map) {
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1662
diff changeset
826 SDL_InvalidateMap(map);
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
827 if (map->sw_data != NULL) {
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1662
diff changeset
828 SDL_free(map->sw_data);
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
829 }
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1662
diff changeset
830 SDL_free(map);
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
831 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
832 }
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
833
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1557
diff changeset
834 /* vi: set ts=4 sw=4 expandtab: */