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annotate src/video/x11/SDL_x11yuv.c @ 1662:782fd950bd46 SDL-1.3

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Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API. WARNING: None of the video drivers have been updated for the new API yet! The API is still under design and very fluid. The code is now run through a consistent indent format: indent -i4 -nut -nsc -br -ce The headers are being converted to automatically generate doxygen documentation.
author Sam Lantinga <slouken@libsdl.org>
date Sun, 28 May 2006 13:04:16 +0000
parents 51038e80ae59
children 11775724e3fe
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 /* This is the XFree86 Xv extension implementation of YUV video overlays */
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25
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26 #if SDL_VIDEO_DRIVER_X11_XV
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27
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28 #include <X11/Xlib.h>
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29 #ifndef NO_SHARED_MEMORY
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30 #include <sys/ipc.h>
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31 #include <sys/shm.h>
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32 #include <X11/extensions/XShm.h>
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33 #endif
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34 #include "../Xext/extensions/Xvlib.h"
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35
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36 #include "SDL_x11yuv_c.h"
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37 #include "../SDL_yuvfuncs.h"
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38
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39 #define XFREE86_REFRESH_HACK
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40 #ifdef XFREE86_REFRESH_HACK
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41 #include "SDL_x11image_c.h"
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42 #endif
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43
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44 /* Workaround when pitch != width */
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45 #define PITCH_WORKAROUND
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46
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47 /* Fix for the NVidia GeForce 2 - use the last available adaptor */
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48 /*#define USE_LAST_ADAPTOR *//* Apparently the NVidia drivers are fixed */
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49
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50 /* The functions used to manipulate software video overlays */
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51 static struct private_yuvhwfuncs x11_yuvfuncs = {
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52 X11_LockYUVOverlay,
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53 X11_UnlockYUVOverlay,
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54 X11_DisplayYUVOverlay,
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55 X11_FreeYUVOverlay
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56 };
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57
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58 struct private_yuvhwdata
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59 {
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60 int port;
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61 #ifndef NO_SHARED_MEMORY
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62 int yuv_use_mitshm;
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63 XShmSegmentInfo yuvshm;
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64 #endif
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65 SDL_NAME (XvImage) * image;
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66 };
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67
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68
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69 static int (*X_handler) (Display *, XErrorEvent *) = NULL;
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70
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71 #ifndef NO_SHARED_MEMORY
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72 /* Shared memory error handler routine */
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73 static int shm_error;
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74 static int
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75 shm_errhandler (Display * d, XErrorEvent * e)
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76 {
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77 if (e->error_code == BadAccess) {
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78 shm_error = True;
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79 return (0);
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80 } else
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81 return (X_handler (d, e));
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82 }
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83 #endif /* !NO_SHARED_MEMORY */
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84
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85 static int xv_error;
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86 static int
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87 xv_errhandler (Display * d, XErrorEvent * e)
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88 {
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89 if (e->error_code == BadMatch) {
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90 xv_error = True;
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91 return (0);
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92 } else
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93 return (X_handler (d, e));
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94 }
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95
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96 SDL_Overlay *
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97 X11_CreateYUVOverlay (_THIS, int width, int height, Uint32 format,
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98 SDL_Surface * display)
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99 {
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100 SDL_Overlay *overlay;
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101 struct private_yuvhwdata *hwdata;
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102 int xv_port;
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103 unsigned int i, j, k;
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104 unsigned int adaptors;
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105 SDL_NAME (XvAdaptorInfo) * ainfo;
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106 int bpp;
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107 #ifndef NO_SHARED_MEMORY
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108 XShmSegmentInfo *yuvshm;
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109 #endif
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110
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111 /* Look for the XVideo extension with a valid port for this format */
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112 xv_port = -1;
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113 if ((Success ==
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114 SDL_NAME (XvQueryExtension) (GFX_Display, &j, &j, &j, &j, &j))
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115 && (Success ==
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116 SDL_NAME (XvQueryAdaptors) (GFX_Display,
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117 RootWindow (GFX_Display, SDL_Screen),
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118 &adaptors, &ainfo))) {
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119 #ifdef USE_LAST_ADAPTOR
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120 for (i = 0; i < adaptors; ++i)
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121 #else
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122 for (i = 0; (i < adaptors) && (xv_port == -1); ++i)
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123 #endif /* USE_LAST_ADAPTOR */
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124 {
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125 /* Check to see if the visual can be used */
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126 if (BUGGY_XFREE86 (<=, 4001)) {
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127 int visual_ok = 0;
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128 for (j = 0; j < ainfo[i].num_formats; ++j) {
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129 if (ainfo[i].formats[j].visual_id == SDL_Visual->visualid) {
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130 visual_ok = 1;
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131 break;
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132 }
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133 }
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134 if (!visual_ok) {
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135 continue;
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136 }
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137 }
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138 if ((ainfo[i].type & XvInputMask) &&
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139 (ainfo[i].type & XvImageMask)) {
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140 int num_formats;
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141 SDL_NAME (XvImageFormatValues) * formats;
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142 formats = SDL_NAME (XvListImageFormats) (GFX_Display,
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143 ainfo[i].
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144 base_id,
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145 &num_formats);
182
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diff changeset
146 #ifdef USE_LAST_ADAPTOR
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147 for (j = 0; j < num_formats; ++j)
182
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148 #else
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149 for (j = 0; (j < num_formats) && (xv_port == -1); ++j)
182
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150 #endif /* USE_LAST_ADAPTOR */
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151 {
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152 if ((Uint32) formats[j].id == format) {
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153 for (k = 0; k < ainfo[i].num_ports; ++k) {
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154 if (Success == SDL_NAME (XvGrabPort)
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155 (GFX_Display,
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156 ainfo[i].base_id + k, CurrentTime)) {
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157 xv_port = ainfo[i].base_id + k;
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158 break;
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159 }
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160 }
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161 }
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162 }
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163 if (formats) {
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164 XFree (formats);
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165 }
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166 }
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167 }
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168 SDL_NAME (XvFreeAdaptorInfo) (ainfo);
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169 }
429
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170
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171 /* Precalculate the bpp for the pitch workaround below */
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172 switch (format) {
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173 /* Add any other cases we need to support... */
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174 case SDL_YUY2_OVERLAY:
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175 case SDL_UYVY_OVERLAY:
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176 case SDL_YVYU_OVERLAY:
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177 bpp = 2;
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178 break;
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179 default:
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180 bpp = 1;
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181 break;
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182 }
813
6a2c6717b386 Added support for remote XVideo (thanks Frederic!)
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183
434
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184 #if 0
429
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185 /*
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186 * !!! FIXME:
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187 * "Here are some diffs for X11 and yuv. Note that the last part 2nd
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188 * diff should probably be a new call to XvQueryAdaptorFree with ainfo
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189 * and the number of adaptors, instead of the loop through like I did."
434
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190 *
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191 * ACHTUNG: This is broken! It looks like XvFreeAdaptorInfo does this
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192 * for you, so we end up with a double-free. I need to look at this
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193 * more closely... --ryan.
429
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194 */
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195 for (i = 0; i < adaptors; ++i) {
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196 if (ainfo[i].name != NULL)
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197 Xfree (ainfo[i].name);
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198 if (ainfo[i].formats != NULL)
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199 Xfree (ainfo[i].formats);
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200 }
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201 Xfree (ainfo);
434
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diff changeset
202 #endif
429
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diff changeset
203
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204 if (xv_port == -1) {
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205 SDL_SetError ("No available video ports for requested format");
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206 return (NULL);
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207 }
0
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diff changeset
208
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209 /* Enable auto-painting of the overlay colorkey */
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210 {
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diff changeset
211 static const char *attr[] =
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212 { "XV_AUTOPAINT_COLORKEY", "XV_AUTOPAINT_COLOURKEY" };
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213 unsigned int i;
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diff changeset
214
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215 SDL_NAME (XvSelectPortNotify) (GFX_Display, xv_port, True);
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216 X_handler = XSetErrorHandler (xv_errhandler);
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217 for (i = 0; i < sizeof (attr) / (sizeof attr[0]); ++i) {
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diff changeset
218 Atom a;
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diff changeset
219
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220 xv_error = False;
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221 a = XInternAtom (GFX_Display, attr[i], True);
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222 if (a != None) {
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223 SDL_NAME (XvSetPortAttribute) (GFX_Display, xv_port, a, 1);
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224 XSync (GFX_Display, True);
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225 if (!xv_error) {
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diff changeset
226 break;
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227 }
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diff changeset
228 }
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diff changeset
229 }
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230 XSetErrorHandler (X_handler);
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231 SDL_NAME (XvSelectPortNotify) (GFX_Display, xv_port, False);
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232 }
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233
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234 /* Create the overlay structure */
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235 overlay = (SDL_Overlay *) SDL_malloc (sizeof *overlay);
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diff changeset
236 if (overlay == NULL) {
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diff changeset
237 SDL_NAME (XvUngrabPort) (GFX_Display, xv_port, CurrentTime);
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diff changeset
238 SDL_OutOfMemory ();
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diff changeset
239 return (NULL);
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240 }
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diff changeset
241 SDL_memset (overlay, 0, (sizeof *overlay));
0
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diff changeset
242
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243 /* Fill in the basic members */
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244 overlay->format = format;
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245 overlay->w = width;
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246 overlay->h = height;
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247
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248 /* Set up the YUV surface function structure */
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249 overlay->hwfuncs = &x11_yuvfuncs;
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250 overlay->hw_overlay = 1;
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251
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252 /* Create the pixel data and lookup tables */
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253 hwdata = (struct private_yuvhwdata *) SDL_malloc (sizeof *hwdata);
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254 overlay->hwdata = hwdata;
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255 if (hwdata == NULL) {
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256 SDL_NAME (XvUngrabPort) (GFX_Display, xv_port, CurrentTime);
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257 SDL_OutOfMemory ();
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258 SDL_FreeYUVOverlay (overlay);
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259 return (NULL);
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260 }
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261 hwdata->port = xv_port;
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262 #ifndef NO_SHARED_MEMORY
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263 yuvshm = &hwdata->yuvshm;
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264 SDL_memset (yuvshm, 0, sizeof (*yuvshm));
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265 hwdata->image = SDL_NAME (XvShmCreateImage) (GFX_Display, xv_port, format,
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266 0, width, height, yuvshm);
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267 #ifdef PITCH_WORKAROUND
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268 if (hwdata->image != NULL && hwdata->image->pitches[0] != (width * bpp)) {
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269 /* Ajust overlay width according to pitch */
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270 XFree (hwdata->image);
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271 width = hwdata->image->pitches[0] / bpp;
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272 hwdata->image =
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273 SDL_NAME (XvShmCreateImage) (GFX_Display, xv_port, format, 0,
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274 width, height, yuvshm);
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275 }
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276 #endif /* PITCH_WORKAROUND */
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277 hwdata->yuv_use_mitshm = (hwdata->image != NULL);
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278 if (hwdata->yuv_use_mitshm) {
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279 yuvshm->shmid = shmget (IPC_PRIVATE, hwdata->image->data_size,
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280 IPC_CREAT | 0777);
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281 if (yuvshm->shmid >= 0) {
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282 yuvshm->shmaddr = (char *) shmat (yuvshm->shmid, 0, 0);
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283 yuvshm->readOnly = False;
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284 if (yuvshm->shmaddr != (char *) -1) {
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285 shm_error = False;
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286 X_handler = XSetErrorHandler (shm_errhandler);
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287 XShmAttach (GFX_Display, yuvshm);
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288 XSync (GFX_Display, True);
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289 XSetErrorHandler (X_handler);
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290 if (shm_error)
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291 shmdt (yuvshm->shmaddr);
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292 } else {
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293 shm_error = True;
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294 }
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295 shmctl (yuvshm->shmid, IPC_RMID, NULL);
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296 } else {
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297 shm_error = True;
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298 }
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299 if (shm_error) {
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300 XFree (hwdata->image);
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301 hwdata->yuv_use_mitshm = 0;
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302 } else {
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303 hwdata->image->data = yuvshm->shmaddr;
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304 }
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305 }
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306 if (!hwdata->yuv_use_mitshm)
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307 #endif /* NO_SHARED_MEMORY */
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308 {
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309 hwdata->image =
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310 SDL_NAME (XvCreateImage) (GFX_Display, xv_port, format, 0,
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311 width, height);
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312
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313 #ifdef PITCH_WORKAROUND
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314 if (hwdata->image != NULL
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315 && hwdata->image->pitches[0] != (width * bpp)) {
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316 /* Ajust overlay width according to pitch */
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317 XFree (hwdata->image);
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318 width = hwdata->image->pitches[0] / bpp;
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319 hwdata->image =
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320 SDL_NAME (XvCreateImage) (GFX_Display, xv_port, format, 0,
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321 width, height);
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322 }
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323 #endif /* PITCH_WORKAROUND */
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324 if (hwdata->image == NULL) {
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325 SDL_SetError ("Couldn't create XVideo image");
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326 SDL_FreeYUVOverlay (overlay);
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327 return (NULL);
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328 }
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329 hwdata->image->data = SDL_malloc (hwdata->image->data_size);
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330 if (hwdata->image->data == NULL) {
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331 SDL_OutOfMemory ();
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332 SDL_FreeYUVOverlay (overlay);
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333 return (NULL);
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334 }
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335 }
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336
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337 /* Find the pitch and offset values for the overlay */
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338 overlay->planes = hwdata->image->num_planes;
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339 overlay->pitches =
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340 (Uint16 *) SDL_malloc (overlay->planes * sizeof (Uint16));
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341 overlay->pixels =
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342 (Uint8 **) SDL_malloc (overlay->planes * sizeof (Uint8 *));
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343 if (!overlay->pitches || !overlay->pixels) {
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344 SDL_OutOfMemory ();
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345 SDL_FreeYUVOverlay (overlay);
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346 return (NULL);
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347 }
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348 for (i = 0; i < overlay->planes; ++i) {
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349 overlay->pitches[i] = hwdata->image->pitches[i];
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350 overlay->pixels[i] = (Uint8 *) hwdata->image->data +
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351 hwdata->image->offsets[i];
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352 }
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353
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354 #ifdef XFREE86_REFRESH_HACK
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355 /* Work around an XFree86 X server bug (?)
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356 We can't perform normal updates in windows that have video
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357 being output to them. See SDL_x11image.c for more details.
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358 */
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359 X11_DisableAutoRefresh (this);
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360 #endif
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361
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362 /* We're all done.. */
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363 return (overlay);
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364 }
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365
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366 int
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367 X11_LockYUVOverlay (_THIS, SDL_Overlay * overlay)
0
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368 {
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369 return (0);
0
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370 }
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371
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372 void
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373 X11_UnlockYUVOverlay (_THIS, SDL_Overlay * overlay)
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374 {
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375 return;
0
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376 }
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377
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378 int
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379 X11_DisplayYUVOverlay (_THIS, SDL_Overlay * overlay, SDL_Rect * src,
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380 SDL_Rect * dst)
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381 {
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382 struct private_yuvhwdata *hwdata;
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383
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384 hwdata = overlay->hwdata;
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385
813
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386 #ifndef NO_SHARED_MEMORY
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387 if (hwdata->yuv_use_mitshm) {
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388 SDL_NAME (XvShmPutImage) (GFX_Display, hwdata->port, SDL_Window,
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389 SDL_GC, hwdata->image, src->x, src->y,
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390 src->w, src->h, dst->x, dst->y, dst->w,
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391 dst->h, False);
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392 } else
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393 #endif
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394 {
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395 SDL_NAME (XvPutImage) (GFX_Display, hwdata->port, SDL_Window,
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396 SDL_GC, hwdata->image, src->x, src->y,
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397 src->w, src->h, dst->x, dst->y, dst->w,
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398 dst->h);
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399 }
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400 XSync (GFX_Display, False);
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401 return (0);
0
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402 }
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403
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404 void
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405 X11_FreeYUVOverlay (_THIS, SDL_Overlay * overlay)
0
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406 {
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407 struct private_yuvhwdata *hwdata;
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408
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409 hwdata = overlay->hwdata;
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410 if (hwdata) {
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411 SDL_NAME (XvUngrabPort) (GFX_Display, hwdata->port, CurrentTime);
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412 #ifndef NO_SHARED_MEMORY
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413 if (hwdata->yuv_use_mitshm) {
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414 XShmDetach (GFX_Display, &hwdata->yuvshm);
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415 shmdt (hwdata->yuvshm.shmaddr);
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416 }
813
6a2c6717b386 Added support for remote XVideo (thanks Frederic!)
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417 #endif
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418 if (hwdata->image) {
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419 XFree (hwdata->image);
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420 }
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421 SDL_free (hwdata);
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422 }
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423 if (overlay->pitches) {
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424 SDL_free (overlay->pitches);
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425 overlay->pitches = NULL;
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426 }
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427 if (overlay->pixels) {
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428 SDL_free (overlay->pixels);
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429 overlay->pixels = NULL;
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430 }
0
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diff changeset
431 #ifdef XFREE86_REFRESH_HACK
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432 X11_EnableAutoRefresh (this);
0
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diff changeset
433 #endif
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434 }
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diff changeset
435
1361
19418e4422cb New configure-based build system. Still work in progress, but much improved
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diff changeset
436 #endif /* SDL_VIDEO_DRIVER_X11_XV */
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437 /* vi: set ts=4 sw=4 expandtab: */