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annotate src/video/cybergfx/SDL_cgxyuv.c @ 816:428f688f2ad2

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Date: Fri, 13 Feb 2004 17:03:16 +0100 From: Max Horn Subject: Modifier key fix The internal modifier state can get out of sync with reality. To trigger this, do for example this: 1) Launch an SDL app 2) Alt-click on the desktop (this will hide the SDL app). 3) Bring the SDL app back to the front 4) SDL will still think alt is pressed (and as such will treat left clicks like middle clicks). If you press and release alt, it'll be fine again. The attached patch cures this by rechecking the modifier state whenever we process an event.
author Sam Lantinga <slouken@libsdl.org>
date Fri, 13 Feb 2004 17:57:16 +0000
parents b8d311d90021
children c9b51268668f
rev   line source
21
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2004 Sam Lantinga
21
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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 Library General Public
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7 License as published by the Free Software Foundation; either
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8 version 2 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 Library 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 Library General Public
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16 License along with this library; if not, write to the Free
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17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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18
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19 Sam Lantinga
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20 slouken@libsdl.org
21
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21 */
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22
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23 #ifdef SAVE_RCSID
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24 static char rcsid =
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25 "@(#) $Id$";
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26 #endif
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27
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28 /* This is the XFree86 Xv extension implementation of YUV video overlays */
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29
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30 #ifdef XFREE86_XV
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31
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32 #include <stdlib.h>
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33 #include <string.h>
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34 #include <X11/Xlib.h>
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35 #include <sys/ipc.h>
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36 #include <sys/shm.h>
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37 #include <X11/extensions/XShm.h>
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38 #include <X11/extensions/Xvlib.h>
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39
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40 #include "SDL_error.h"
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41 #include "SDL_video.h"
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42 #include "SDL_x11yuv_c.h"
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43 #include "SDL_yuvfuncs.h"
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44
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45 /* The functions used to manipulate software video overlays */
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46 static struct private_yuvhwfuncs x11_yuvfuncs = {
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47 X11_LockYUVOverlay,
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48 X11_UnlockYUVOverlay,
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49 X11_DisplayYUVOverlay,
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50 X11_FreeYUVOverlay
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51 };
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52
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53 struct private_yuvhwdata {
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54 int port;
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55 XShmSegmentInfo yuvshm;
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56 XvImage *image;
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57 };
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58
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59
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60 SDL_Overlay *X11_CreateYUVOverlay(_THIS, int width, int height, Uint32 format, SDL_Surface *display)
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61 {
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62 SDL_Overlay *overlay;
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63 struct private_yuvhwdata *hwdata;
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64 int xv_port;
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65 int i, j;
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66 int adaptors;
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67 XvAdaptorInfo *ainfo;
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68 XShmSegmentInfo *yuvshm;
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69
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70 xv_port = -1;
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71 if ( (Success == XvQueryExtension(GFX_Display, &j, &j, &j, &j, &j)) &&
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72 (Success == XvQueryAdaptors(GFX_Display,
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73 RootWindow(GFX_Display, SDL_Screen),
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74 &adaptors, &ainfo)) ) {
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75 for ( i=0; (i<adaptors) && (xv_port == -1); ++i ) {
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76 if ( (ainfo[i].type & XvInputMask) &&
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77 (ainfo[i].type & XvImageMask) ) {
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78 int num_formats;
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79 XvImageFormatValues *formats;
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80 formats = XvListImageFormats(GFX_Display,
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81 ainfo[i].base_id, &num_formats);
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82 for ( j=0; j<num_formats; ++j ) {
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83 if ( (Uint32)formats[j].id == format ) {
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84 xv_port = ainfo[i].base_id;
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85 break;
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86 }
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87 }
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88 }
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89 }
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90 }
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91 if ( xv_port == -1 ) {
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92 SDL_SetError("No available video ports for requested format");
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93 return(NULL);
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94 }
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95
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96 /* Create the overlay structure */
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97 overlay = (SDL_Overlay *)malloc(sizeof *overlay);
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98 if ( overlay == NULL ) {
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99 SDL_OutOfMemory();
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100 return(NULL);
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101 }
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102 memset(overlay, 0, (sizeof *overlay));
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103
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104 /* Fill in the basic members */
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105 overlay->format = format;
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106 overlay->w = width;
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107 overlay->h = height;
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108
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109 /* Set up the YUV surface function structure */
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110 overlay->hwfuncs = &x11_yuvfuncs;
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111
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112 /* Create the pixel data and lookup tables */
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113 hwdata = (struct private_yuvhwdata *)malloc(sizeof *hwdata);
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114 overlay->hwdata = hwdata;
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115 if ( hwdata == NULL ) {
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116 SDL_OutOfMemory();
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117 SDL_FreeYUVOverlay(overlay);
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118 return(NULL);
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119 }
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120 yuvshm = &hwdata->yuvshm;
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121 memset(yuvshm, 0, sizeof(*yuvshm));
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122 hwdata->port = xv_port;
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123 hwdata->image = XvShmCreateImage(GFX_Display, xv_port, format,
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124 0, width, height, yuvshm);
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125 if ( hwdata->image == NULL ) {
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126 SDL_OutOfMemory();
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127 SDL_FreeYUVOverlay(overlay);
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128 return(NULL);
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129 }
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130 yuvshm->shmid = shmget(IPC_PRIVATE, hwdata->image->data_size,
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131 IPC_CREAT | 0777);
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132 if ( yuvshm->shmid < 0 ) {
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133 SDL_SetError("Unable to get %d bytes shared memory",
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134 hwdata->image->data_size);
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135 SDL_FreeYUVOverlay(overlay);
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136 return(NULL);
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137 }
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138 yuvshm->shmaddr = (caddr_t) shmat(yuvshm->shmid, 0, 0);
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139 yuvshm->readOnly = False;
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140 hwdata->image->data = yuvshm->shmaddr;
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141
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142 XShmAttach(GFX_Display, yuvshm);
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143 XSync(GFX_Display, False);
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144 shmctl(yuvshm->shmid, IPC_RMID, 0);
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145
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146 /* We're all done.. */
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147 return(overlay);
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148 }
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149
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150 int X11_LockYUVOverlay(_THIS, SDL_Overlay *overlay)
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151 {
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152 overlay->pixels = overlay->hwdata->image->data;
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153 /* What should the pitch be set to? */
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154 return(0);
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155 }
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156
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157 void X11_UnlockYUVOverlay(_THIS, SDL_Overlay *overlay)
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158 {
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159 overlay->pixels = NULL;
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160 }
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161
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162 int X11_DisplayYUVOverlay(_THIS, SDL_Overlay *overlay, SDL_Rect *dstrect)
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163 {
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164 struct private_yuvhwdata *hwdata;
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165
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166 hwdata = overlay->hwdata;
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167 XvShmPutImage(GFX_Display, hwdata->port, SDL_Window, SDL_GC,
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168 hwdata->image, 0, 0, overlay->w, overlay->h,
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169 dstrect->x, dstrect->y, dstrect->w, dstrect->h, False);
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170 XSync(GFX_Display, False);
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171 return(0);
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172 }
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173
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174 void X11_FreeYUVOverlay(_THIS, SDL_Overlay *overlay)
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175 {
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176 struct private_yuvhwdata *hwdata;
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177
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178 hwdata = overlay->hwdata;
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179 if ( hwdata ) {
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180 if ( hwdata->yuvshm.shmaddr ) {
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181 XShmDetach(GFX_Display, &hwdata->yuvshm);
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182 shmdt(hwdata->yuvshm.shmaddr);
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183 }
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184 if ( hwdata->image ) {
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185 XFree(hwdata->image);
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186 }
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187 free(hwdata);
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188 }
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189 }
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190
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191 #endif /* XFREE86_XV */