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annotate src/video/gapi/SDL_gapivideo.h @ 3583:65f66674b7fb

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Allocate memory only if we're going to overwrite an environment variable
author Sam Lantinga <slouken@libsdl.org>
date Wed, 16 Dec 2009 16:08:17 +0000
parents 99210400e8b9
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) 1997-2009 Sam Lantinga
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4
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5 This library is free software; you can redistribute it and/or
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6 modify it under the terms of the GNU Lesser General Public
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7 License as published by the Free Software Foundation; either
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8 version 2.1 of the License, or (at your option) any later version.
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9
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10 This library is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 Lesser General Public License for more details.
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14
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15 You should have received a copy of the GNU Lesser General Public
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16 License along with this library; if not, write to the Free Software
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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18
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19 Sam Lantinga
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20 slouken@libsdl.org
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21 */
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22 #include "SDL_config.h"
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23
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24 #ifndef _SDL_gapivideo_h
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25 #define _SDL_gapivideo_h
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26
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27 #include "SDL_mouse.h"
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28 #include "SDL_mutex.h"
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29 #include "../SDL_sysvideo.h"
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30
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31 /* From gx.h, since it's not really C compliant */
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32
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33 struct GXDisplayProperties
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34 {
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35 DWORD cxWidth;
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36 DWORD cyHeight; // notice lack of 'th' in the word height.
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37 long cbxPitch; // number of bytes to move right one x pixel - can be negative.
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38 long cbyPitch; // number of bytes to move down one y pixel - can be negative.
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39 long cBPP; // # of bits in each pixel
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40 DWORD ffFormat; // format flags.
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41 };
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42
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43 struct GXKeyList
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44 {
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45 short vkUp; // key for up
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46 POINT ptUp; // x,y position of key/button. Not on screen but in screen coordinates.
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47 short vkDown;
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48 POINT ptDown;
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49 short vkLeft;
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50 POINT ptLeft;
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51 short vkRight;
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52 POINT ptRight;
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53 short vkA;
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54 POINT ptA;
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55 short vkB;
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56 POINT ptB;
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57 short vkC;
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58 POINT ptC;
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59 short vkStart;
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60 POINT ptStart;
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61 };
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62
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63 typedef int (*PFNGXOpenDisplay) (HWND hWnd, DWORD dwFlags);
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64 typedef int (*PFNGXCloseDisplay) ();
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65 typedef void *(*PFNGXBeginDraw) ();
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66 typedef int (*PFNGXEndDraw) ();
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67 typedef int (*PFNGXOpenInput) ();
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68 typedef int (*PFNGXCloseInput) ();
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69 typedef struct GXDisplayProperties (*PFNGXGetDisplayProperties) ();
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70 typedef struct GXKeyList (*PFNGXGetDefaultKeys) (int iOptions);
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71 typedef int (*PFNGXSuspend) ();
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72 typedef int (*PFNGXResume) ();
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73 typedef int (*PFNGXSetViewport) (DWORD dwTop, DWORD dwHeight,
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74 DWORD dwReserved1, DWORD dwReserved2);
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75 typedef BOOL(*PFNGXIsDisplayDRAMBuffer) ();
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76
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77 struct GapiFunc
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78 {
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79 PFNGXOpenDisplay GXOpenDisplay;
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80 PFNGXCloseDisplay GXCloseDisplay;
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81 PFNGXBeginDraw GXBeginDraw;
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82 PFNGXEndDraw GXEndDraw;
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83 PFNGXOpenInput GXOpenInput;
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84 PFNGXCloseInput GXCloseInput;
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85 PFNGXGetDisplayProperties GXGetDisplayProperties;
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86 PFNGXGetDefaultKeys GXGetDefaultKeys;
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87 PFNGXSuspend GXSuspend;
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88 PFNGXResume GXResume;
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89 PFNGXSetViewport GXSetViewport;
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90 PFNGXIsDisplayDRAMBuffer GXIsDisplayDRAMBuffer;
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91 };
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92
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93 #define kfLandscape 0x8 // Screen is rotated 270 degrees
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94 #define kfPalette 0x10 // Pixel values are indexes into a palette
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95 #define kfDirect 0x20 // Pixel values contain actual level information
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96 #define kfDirect555 0x40 // 5 bits each for red, green and blue values in a pixel.
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97 #define kfDirect565 0x80 // 5 red bits, 6 green bits and 5 blue bits per pixel
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98 #define kfDirect888 0x100 // 8 bits each for red, green and blue values in a pixel.
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99 #define kfDirect444 0x200 // 4 red, 4 green, 4 blue
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100 #define kfDirectInverted 0x400
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101
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102 #define GX_FULLSCREEN 0x01 // for OpenDisplay()
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103 #define GX_NORMALKEYS 0x02
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104 #define GX_LANDSCAPEKEYS 0x03
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105
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106 typedef enum
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107 {
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108 SDL_ORIENTATION_UP,
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109 SDL_ORIENTATION_DOWN,
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110 SDL_ORIENTATION_LEFT,
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111 SDL_ORIENTATION_RIGHT
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112 } SDL_ScreenOrientation;
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113
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114 /* GAPI video mode */
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115 typedef enum
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116 {
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117 GAPI_NONE = 0,
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118 GAPI_DIRECT_565,
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119 GAPI_DIRECT_555,
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120 GAPI_MONO,
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121 GAPI_PALETTE
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122 } GAPIVideoMode;
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123
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124 /* Hidden "this" pointer for the video functions */
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125 #define _THIS SDL_VideoDevice *this
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126
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127 typedef unsigned short PIXEL;
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128
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129 /* Private display data
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130 begin with DIB private structure to allow DIB events code sharing
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131 */
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132 struct SDL_PrivateVideoData
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133 {
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134 HBITMAP screen_bmp;
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135 HPALETTE screen_pal;
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136
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137 #define NUM_MODELISTS 4 /* 8, 16, 24, and 32 bits-per-pixel */
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138 int SDL_nummodes[NUM_MODELISTS];
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139 SDL_Rect **SDL_modelist[NUM_MODELISTS];
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140 enum SDL_ScreenOrientation userOrientation;
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141 int invert;
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142 char hiresFix; // using hires mode without defining hires resource
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143 // --------------
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144 int useGXOpenDisplay; /* use GXOpenDispplay */
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145 int w, h;
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146 enum SDL_ScreenOrientation gapiOrientation;
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147
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148 void *buffer; // may be 8, 16, 24, 32 bpp
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149 PIXEL *videoMem;
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150 BOOL needUpdate;
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151 struct GXKeyList keyList;
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152 struct GapiFunc gxFunc;
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153 struct GXDisplayProperties gxProperties;
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154 enum GAPIVideoMode videoMode;
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155 int colorscale;
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156 int dstLineStep; // in bytes
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157 int dstPixelStep; // in bytes
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158 int startOffset; // in bytes
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159 int useVga;
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160 int suspended; // do not pu anything into video memory
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161 };
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162
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163
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164 #define gapiBuffer this->hidden->buffer
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165 #define gapi this->hidden
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166
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167 #endif /* _SDL_gapivideo_h */
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168 /* vi: set ts=4 sw=4 expandtab: */