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annotate src/video/x11/SDL_x11yuv.c @ 1681:80a5e6a4e1e2 SDL-1.3

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Working on paletted display and texture support (two different issues)
author Sam Lantinga <slouken@libsdl.org>
date Thu, 15 Jun 2006 07:07:07 +0000
parents 4da1ee79c9af
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 /* 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 #if 0 /* Apparently the NVidia drivers are fixed */
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49 #define USE_LAST_ADAPTOR
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50 #endif
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51
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52 /* The functions used to manipulate software video overlays */
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53 static struct private_yuvhwfuncs x11_yuvfuncs = {
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54 X11_LockYUVOverlay,
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55 X11_UnlockYUVOverlay,
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56 X11_DisplayYUVOverlay,
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57 X11_FreeYUVOverlay
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58 };
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59
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60 struct private_yuvhwdata
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61 {
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62 int port;
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63 #ifndef NO_SHARED_MEMORY
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64 int yuv_use_mitshm;
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65 XShmSegmentInfo yuvshm;
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66 #endif
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67 SDL_NAME(XvImage) * image;
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68 };
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69
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70
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71 static int (*X_handler) (Display *, XErrorEvent *) = NULL;
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72
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73 #ifndef NO_SHARED_MEMORY
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74 /* Shared memory error handler routine */
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75 static int shm_error;
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76 static int
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77 shm_errhandler(Display * d, XErrorEvent * e)
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78 {
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79 if (e->error_code == BadAccess) {
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80 shm_error = True;
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81 return (0);
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82 } else
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83 return (X_handler(d, e));
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84 }
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85 #endif /* !NO_SHARED_MEMORY */
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86
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87 static int xv_error;
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88 static int
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89 xv_errhandler(Display * d, XErrorEvent * e)
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90 {
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91 if (e->error_code == BadMatch) {
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92 xv_error = True;
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93 return (0);
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94 } else
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95 return (X_handler(d, e));
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96 }
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97
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98 SDL_Overlay *
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99 X11_CreateYUVOverlay(_THIS, int width, int height, Uint32 format,
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100 SDL_Surface * display)
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101 {
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102 SDL_Overlay *overlay;
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103 struct private_yuvhwdata *hwdata;
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104 int xv_port;
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105 unsigned int i, j, k;
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106 unsigned int adaptors;
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107 SDL_NAME(XvAdaptorInfo) * ainfo;
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108 int bpp;
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109 #ifndef NO_SHARED_MEMORY
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110 XShmSegmentInfo *yuvshm;
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111 #endif
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112
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113 /* Look for the XVideo extension with a valid port for this format */
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114 xv_port = -1;
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115 if ((Success ==
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116 SDL_NAME(XvQueryExtension) (GFX_Display, &j, &j, &j, &j, &j))
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117 && (Success ==
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118 SDL_NAME(XvQueryAdaptors) (GFX_Display,
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119 RootWindow(GFX_Display, SDL_Screen),
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120 &adaptors, &ainfo))) {
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121 #ifdef USE_LAST_ADAPTOR
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122 for (i = 0; i < adaptors; ++i)
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123 #else
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124 for (i = 0; (i < adaptors) && (xv_port == -1); ++i)
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125 #endif /* USE_LAST_ADAPTOR */
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126 {
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127 /* Check to see if the visual can be used */
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128 if (BUGGY_XFREE86(<=, 4001)) {
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129 int visual_ok = 0;
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130 for (j = 0; j < ainfo[i].num_formats; ++j) {
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131 if (ainfo[i].formats[j].visual_id == SDL_Visual->visualid) {
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132 visual_ok = 1;
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133 break;
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134 }
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135 }
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136 if (!visual_ok) {
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137 continue;
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138 }
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139 }
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140 if ((ainfo[i].type & XvInputMask) &&
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141 (ainfo[i].type & XvImageMask)) {
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142 int num_formats;
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143 SDL_NAME(XvImageFormatValues) * formats;
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144 formats = SDL_NAME(XvListImageFormats) (GFX_Display,
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145 ainfo[i].
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146 base_id,
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147 &num_formats);
182
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148 #ifdef USE_LAST_ADAPTOR
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149 for (j = 0; j < num_formats; ++j)
182
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150 #else
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151 for (j = 0; (j < num_formats) && (xv_port == -1); ++j)
182
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152 #endif /* USE_LAST_ADAPTOR */
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153 {
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154 if ((Uint32) formats[j].id == format) {
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155 for (k = 0; k < ainfo[i].num_ports; ++k) {
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156 if (Success == SDL_NAME(XvGrabPort)
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157 (GFX_Display,
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158 ainfo[i].base_id + k, CurrentTime)) {
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159 xv_port = ainfo[i].base_id + k;
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160 break;
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161 }
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162 }
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163 }
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164 }
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165 if (formats) {
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166 XFree(formats);
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167 }
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168 }
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169 }
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170 SDL_NAME(XvFreeAdaptorInfo) (ainfo);
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171 }
429
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172
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173 /* Precalculate the bpp for the pitch workaround below */
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174 switch (format) {
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175 /* Add any other cases we need to support... */
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176 case SDL_YUY2_OVERLAY:
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177 case SDL_UYVY_OVERLAY:
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178 case SDL_YVYU_OVERLAY:
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179 bpp = 2;
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180 break;
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181 default:
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182 bpp = 1;
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183 break;
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184 }
813
6a2c6717b386 Added support for remote XVideo (thanks Frederic!)
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185
434
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186 #if 0
429
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187 /*
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188 * !!! FIXME:
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189 * "Here are some diffs for X11 and yuv. Note that the last part 2nd
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190 * diff should probably be a new call to XvQueryAdaptorFree with ainfo
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191 * and the number of adaptors, instead of the loop through like I did."
434
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192 *
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193 * ACHTUNG: This is broken! It looks like XvFreeAdaptorInfo does this
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194 * for you, so we end up with a double-free. I need to look at this
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195 * more closely... --ryan.
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196 */
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197 for (i = 0; i < adaptors; ++i) {
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198 if (ainfo[i].name != NULL)
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199 Xfree(ainfo[i].name);
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200 if (ainfo[i].formats != NULL)
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201 Xfree(ainfo[i].formats);
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202 }
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203 Xfree(ainfo);
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diff changeset
204 #endif
429
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205
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206 if (xv_port == -1) {
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207 SDL_SetError("No available video ports for requested format");
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208 return (NULL);
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209 }
0
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210
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211 /* Enable auto-painting of the overlay colorkey */
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212 {
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diff changeset
213 static const char *attr[] =
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214 { "XV_AUTOPAINT_COLORKEY", "XV_AUTOPAINT_COLOURKEY" };
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215 unsigned int i;
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216
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217 SDL_NAME(XvSelectPortNotify) (GFX_Display, xv_port, True);
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218 X_handler = XSetErrorHandler(xv_errhandler);
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219 for (i = 0; i < sizeof(attr) / (sizeof attr[0]); ++i) {
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220 Atom a;
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221
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222 xv_error = False;
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223 a = XInternAtom(GFX_Display, attr[i], True);
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224 if (a != None) {
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225 SDL_NAME(XvSetPortAttribute) (GFX_Display, xv_port, a, 1);
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226 XSync(GFX_Display, True);
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227 if (!xv_error) {
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228 break;
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229 }
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230 }
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231 }
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232 XSetErrorHandler(X_handler);
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233 SDL_NAME(XvSelectPortNotify) (GFX_Display, xv_port, False);
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234 }
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235
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236 /* Create the overlay structure */
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237 overlay = (SDL_Overlay *) SDL_malloc(sizeof *overlay);
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238 if (overlay == NULL) {
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239 SDL_NAME(XvUngrabPort) (GFX_Display, xv_port, CurrentTime);
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240 SDL_OutOfMemory();
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241 return (NULL);
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242 }
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243 SDL_memset(overlay, 0, (sizeof *overlay));
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244
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245 /* Fill in the basic members */
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246 overlay->format = format;
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247 overlay->w = width;
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248 overlay->h = height;
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249
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250 /* Set up the YUV surface function structure */
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251 overlay->hwfuncs = &x11_yuvfuncs;
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252 overlay->hw_overlay = 1;
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253
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254 /* Create the pixel data and lookup tables */
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255 hwdata = (struct private_yuvhwdata *) SDL_malloc(sizeof *hwdata);
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256 overlay->hwdata = hwdata;
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257 if (hwdata == NULL) {
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258 SDL_NAME(XvUngrabPort) (GFX_Display, xv_port, CurrentTime);
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259 SDL_OutOfMemory();
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260 SDL_FreeYUVOverlay(overlay);
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261 return (NULL);
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262 }
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263 hwdata->port = xv_port;
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264 #ifndef NO_SHARED_MEMORY
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265 yuvshm = &hwdata->yuvshm;
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266 SDL_memset(yuvshm, 0, sizeof(*yuvshm));
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267 hwdata->image = SDL_NAME(XvShmCreateImage) (GFX_Display, xv_port, format,
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268 0, width, height, yuvshm);
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269 #ifdef PITCH_WORKAROUND
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270 if (hwdata->image != NULL && hwdata->image->pitches[0] != (width * bpp)) {
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271 /* Ajust overlay width according to pitch */
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272 XFree(hwdata->image);
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273 width = hwdata->image->pitches[0] / bpp;
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274 hwdata->image =
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275 SDL_NAME(XvShmCreateImage) (GFX_Display, xv_port, format, 0,
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276 width, height, yuvshm);
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277 }
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278 #endif /* PITCH_WORKAROUND */
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279 hwdata->yuv_use_mitshm = (hwdata->image != NULL);
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280 if (hwdata->yuv_use_mitshm) {
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281 yuvshm->shmid = shmget(IPC_PRIVATE, hwdata->image->data_size,
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282 IPC_CREAT | 0777);
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283 if (yuvshm->shmid >= 0) {
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284 yuvshm->shmaddr = (char *) shmat(yuvshm->shmid, 0, 0);
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285 yuvshm->readOnly = False;
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286 if (yuvshm->shmaddr != (char *) -1) {
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287 shm_error = False;
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288 X_handler = XSetErrorHandler(shm_errhandler);
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289 XShmAttach(GFX_Display, yuvshm);
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290 XSync(GFX_Display, True);
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291 XSetErrorHandler(X_handler);
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292 if (shm_error)
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293 shmdt(yuvshm->shmaddr);
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294 } else {
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295 shm_error = True;
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296 }
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297 shmctl(yuvshm->shmid, IPC_RMID, NULL);
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298 } else {
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299 shm_error = True;
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300 }
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301 if (shm_error) {
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302 XFree(hwdata->image);
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303 hwdata->yuv_use_mitshm = 0;
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304 } else {
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305 hwdata->image->data = yuvshm->shmaddr;
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306 }
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307 }
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308 if (!hwdata->yuv_use_mitshm)
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309 #endif /* NO_SHARED_MEMORY */
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310 {
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311 hwdata->image =
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312 SDL_NAME(XvCreateImage) (GFX_Display, xv_port, format, 0,
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313 width, height);
0
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314
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315 #ifdef PITCH_WORKAROUND
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316 if (hwdata->image != NULL
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317 && hwdata->image->pitches[0] != (width * bpp)) {
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318 /* Ajust overlay width according to pitch */
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319 XFree(hwdata->image);
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320 width = hwdata->image->pitches[0] / bpp;
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321 hwdata->image =
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322 SDL_NAME(XvCreateImage) (GFX_Display, xv_port, format, 0,
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323 width, height);
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324 }
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325 #endif /* PITCH_WORKAROUND */
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326 if (hwdata->image == NULL) {
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327 SDL_SetError("Couldn't create XVideo image");
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328 SDL_FreeYUVOverlay(overlay);
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329 return (NULL);
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330 }
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331 hwdata->image->data = SDL_malloc(hwdata->image->data_size);
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332 if (hwdata->image->data == NULL) {
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333 SDL_OutOfMemory();
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334 SDL_FreeYUVOverlay(overlay);
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335 return (NULL);
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336 }
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337 }
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338
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339 /* Find the pitch and offset values for the overlay */
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340 overlay->planes = hwdata->image->num_planes;
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341 overlay->pitches =
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342 (Uint16 *) SDL_malloc(overlay->planes * sizeof(Uint16));
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343 overlay->pixels =
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344 (Uint8 **) SDL_malloc(overlay->planes * sizeof(Uint8 *));
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345 if (!overlay->pitches || !overlay->pixels) {
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346 SDL_OutOfMemory();
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347 SDL_FreeYUVOverlay(overlay);
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348 return (NULL);
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349 }
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350 for (i = 0; i < overlay->planes; ++i) {
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351 overlay->pitches[i] = hwdata->image->pitches[i];
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352 overlay->pixels[i] = (Uint8 *) hwdata->image->data +
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353 hwdata->image->offsets[i];
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354 }
0
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355
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diff changeset
356 #ifdef XFREE86_REFRESH_HACK
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357 /* Work around an XFree86 X server bug (?)
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358 We can't perform normal updates in windows that have video
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359 being output to them. See SDL_x11image.c for more details.
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diff changeset
360 */
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361 X11_DisableAutoRefresh(this);
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diff changeset
362 #endif
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diff changeset
363
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364 /* We're all done.. */
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365 return (overlay);
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366 }
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367
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368 int
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369 X11_LockYUVOverlay(_THIS, SDL_Overlay * overlay)
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diff changeset
370 {
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371 return (0);
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372 }
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373
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374 void
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375 X11_UnlockYUVOverlay(_THIS, SDL_Overlay * overlay)
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376 {
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diff changeset
377 return;
0
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378 }
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diff changeset
379
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380 int
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381 X11_DisplayYUVOverlay(_THIS, SDL_Overlay * overlay, SDL_Rect * src,
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382 SDL_Rect * dst)
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383 {
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384 struct private_yuvhwdata *hwdata;
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385
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386 hwdata = overlay->hwdata;
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387
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388 #ifndef NO_SHARED_MEMORY
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389 if (hwdata->yuv_use_mitshm) {
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390 SDL_NAME(XvShmPutImage) (GFX_Display, hwdata->port, SDL_Window,
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391 SDL_GC, hwdata->image, src->x, src->y,
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392 src->w, src->h, dst->x, dst->y, dst->w,
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393 dst->h, False);
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394 } else
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395 #endif
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396 {
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397 SDL_NAME(XvPutImage) (GFX_Display, hwdata->port, SDL_Window,
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398 SDL_GC, hwdata->image, src->x, src->y,
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399 src->w, src->h, dst->x, dst->y, dst->w, dst->h);
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400 }
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401 XSync(GFX_Display, False);
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402 return (0);
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403 }
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404
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405 void
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406 X11_FreeYUVOverlay(_THIS, SDL_Overlay * overlay)
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407 {
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408 struct private_yuvhwdata *hwdata;
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409
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410 hwdata = overlay->hwdata;
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411 if (hwdata) {
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412 SDL_NAME(XvUngrabPort) (GFX_Display, hwdata->port, CurrentTime);
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413 #ifndef NO_SHARED_MEMORY
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414 if (hwdata->yuv_use_mitshm) {
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415 XShmDetach(GFX_Display, &hwdata->yuvshm);
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416 shmdt(hwdata->yuvshm.shmaddr);
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417 }
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418 #endif
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419 if (hwdata->image) {
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420 XFree(hwdata->image);
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421 }
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422 SDL_free(hwdata);
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423 }
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424 if (overlay->pitches) {
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425 SDL_free(overlay->pitches);
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426 overlay->pitches = NULL;
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427 }
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428 if (overlay->pixels) {
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429 SDL_free(overlay->pixels);
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430 overlay->pixels = NULL;
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431 }
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432 #ifdef XFREE86_REFRESH_HACK
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433 X11_EnableAutoRefresh(this);
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434 #endif
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435 }
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436
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437 #endif /* SDL_VIDEO_DRIVER_X11_XV */
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438 /* vi: set ts=4 sw=4 expandtab: */