annotate src/video/x11/SDL_x11yuv.c @ 553:417f8709e648

There's a bug in the VC7 optimizer relating to the duff loop optimization
author Sam Lantinga <slouken@libsdl.org>
date Mon, 02 Dec 2002 02:40:58 +0000
parents 95aa4041e7f9
children e3d0517bf67e
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, 1998, 1999, 2000, 2001, 2002 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 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
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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 <XFree86/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 #define XFREE86_REFRESH_HACK
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46 #ifdef XFREE86_REFRESH_HACK
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47 #include "SDL_x11image_c.h"
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48 #endif
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49
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50 /* Workaround when pitch != width */
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51 #define PITCH_WORKAROUND
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52
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53 /* Fix for the NVidia GeForce 2 - use the last available adaptor */
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54 /*#define USE_LAST_ADAPTOR*/ /* Apparently the NVidia drivers are fixed */
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55
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56 /* The functions used to manipulate software video overlays */
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57 static struct private_yuvhwfuncs x11_yuvfuncs = {
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58 X11_LockYUVOverlay,
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59 X11_UnlockYUVOverlay,
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60 X11_DisplayYUVOverlay,
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61 X11_FreeYUVOverlay
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62 };
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63
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64 struct private_yuvhwdata {
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65 int port;
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66 XShmSegmentInfo yuvshm;
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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 SDL_Overlay *X11_CreateYUVOverlay(_THIS, int width, int height, Uint32 format, SDL_Surface *display)
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72 {
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73 SDL_Overlay *overlay;
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74 struct private_yuvhwdata *hwdata;
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75 int xv_port;
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76 int i, j, k;
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77 int adaptors;
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78 SDL_NAME(XvAdaptorInfo) *ainfo;
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79 XShmSegmentInfo *yuvshm;
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80
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81 /* Look for the XVideo extension with a valid port for this format */
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82 xv_port = -1;
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83 if ( (Success == SDL_NAME(XvQueryExtension)(GFX_Display, &j, &j, &j, &j, &j)) &&
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84 (Success == SDL_NAME(XvQueryAdaptors)(GFX_Display,
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85 RootWindow(GFX_Display, SDL_Screen),
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86 &adaptors, &ainfo)) ) {
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87 #ifdef USE_LAST_ADAPTOR
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88 for ( i=0; i < adaptors; ++i ) {
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89 #else
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90 for ( i=0; (i < adaptors) && (xv_port == -1); ++i ) {
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91 #endif /* USE_LAST_ADAPTOR */
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92 /* Check to see if the visual can be used */
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93 if ( BUGGY_XFREE86(<=, 4001) ) {
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94 int visual_ok = 0;
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95 for ( j=0; j<ainfo[i].num_formats; ++j ) {
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96 if ( ainfo[i].formats[j].visual_id ==
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97 SDL_Visual->visualid ) {
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98 visual_ok = 1;
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99 break;
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100 }
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101 }
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102 if ( ! visual_ok ) {
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103 continue;
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104 }
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105 }
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106 if ( (ainfo[i].type & XvInputMask) &&
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107 (ainfo[i].type & XvImageMask) ) {
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108 int num_formats;
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109 SDL_NAME(XvImageFormatValues) *formats;
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110 formats = SDL_NAME(XvListImageFormats)(GFX_Display,
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111 ainfo[i].base_id, &num_formats);
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112 #ifdef USE_LAST_ADAPTOR
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113 for ( j=0; j < num_formats; ++j ) {
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114 #else
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115 for ( j=0; (j < num_formats) && (xv_port == -1); ++j ) {
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116 #endif /* USE_LAST_ADAPTOR */
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117 if ( (Uint32)formats[j].id == format ) {
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118 for ( k=0; k < ainfo[i].num_ports; ++k ) {
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119 if ( Success == SDL_NAME(XvGrabPort)(GFX_Display, ainfo[i].base_id+k, CurrentTime) ) {
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120 xv_port = ainfo[i].base_id+k;
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121 break;
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122 }
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123 }
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124 }
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125 }
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126 if ( formats ) {
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127 XFree(formats);
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128 }
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129 }
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130 }
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131 SDL_NAME(XvFreeAdaptorInfo)(ainfo);
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132 }
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133
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134 #if 0
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135 /*
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136 * !!! FIXME:
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137 * "Here are some diffs for X11 and yuv. Note that the last part 2nd
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138 * diff should probably be a new call to XvQueryAdaptorFree with ainfo
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139 * and the number of adaptors, instead of the loop through like I did."
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140 *
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141 * ACHTUNG: This is broken! It looks like XvFreeAdaptorInfo does this
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142 * for you, so we end up with a double-free. I need to look at this
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143 * more closely... --ryan.
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144 */
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145 for ( i=0; i < adaptors; ++i ) {
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146 if (ainfo[i].name != NULL) Xfree(ainfo[i].name);
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147 if (ainfo[i].formats != NULL) Xfree(ainfo[i].formats);
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148 }
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149 Xfree(ainfo);
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150 #endif
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151
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152 if ( xv_port == -1 ) {
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153 SDL_SetError("No available video ports for requested format");
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154 return(NULL);
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155 }
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156
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157 /* Create the overlay structure */
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158 overlay = (SDL_Overlay *)malloc(sizeof *overlay);
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159 if ( overlay == NULL ) {
292
eadc0746dfaf Added SDL_LockRect() and SDL_UnlockRect()
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parents: 252
diff changeset
160 SDL_NAME(XvUngrabPort)(GFX_Display, xv_port, CurrentTime);
0
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161 SDL_OutOfMemory();
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162 return(NULL);
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163 }
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164 memset(overlay, 0, (sizeof *overlay));
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165
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166 /* Fill in the basic members */
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167 overlay->format = format;
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168 overlay->w = width;
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169 overlay->h = height;
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170
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171 /* Set up the YUV surface function structure */
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172 overlay->hwfuncs = &x11_yuvfuncs;
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173 overlay->hw_overlay = 1;
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174
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175 /* Create the pixel data and lookup tables */
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176 hwdata = (struct private_yuvhwdata *)malloc(sizeof *hwdata);
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177 overlay->hwdata = hwdata;
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178 if ( hwdata == NULL ) {
292
eadc0746dfaf Added SDL_LockRect() and SDL_UnlockRect()
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parents: 252
diff changeset
179 SDL_NAME(XvUngrabPort)(GFX_Display, xv_port, CurrentTime);
0
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180 SDL_OutOfMemory();
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181 SDL_FreeYUVOverlay(overlay);
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182 return(NULL);
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183 }
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184 yuvshm = &hwdata->yuvshm;
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185 memset(yuvshm, 0, sizeof(*yuvshm));
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186 hwdata->port = xv_port;
292
eadc0746dfaf Added SDL_LockRect() and SDL_UnlockRect()
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parents: 252
diff changeset
187 hwdata->image = SDL_NAME(XvShmCreateImage)(GFX_Display, xv_port, format,
0
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188 0, width, height, yuvshm);
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189
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190 #ifdef PITCH_WORKAROUND
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191 if ( hwdata->image != NULL && hwdata->image->pitches[0] != width )
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192 {
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193 /* Ajust overlay width according to pitch */
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194 switch (format) {
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195 case SDL_YV12_OVERLAY:
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196 case SDL_IYUV_OVERLAY:
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197 width = hwdata->image->pitches[0];
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198 break;
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199 case SDL_YUY2_OVERLAY:
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200 case SDL_UYVY_OVERLAY:
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201 case SDL_YVYU_OVERLAY:
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202 width = hwdata->image->pitches[0] / 2;
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203 break;
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204 default:
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205 /* We should never get here (caught above) */
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206 return(NULL);
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207 }
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208
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209 XFree(hwdata->image);
292
eadc0746dfaf Added SDL_LockRect() and SDL_UnlockRect()
Sam Lantinga <slouken@libsdl.org>
parents: 252
diff changeset
210 hwdata->image = SDL_NAME(XvShmCreateImage)(GFX_Display, xv_port, format,
0
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211 0, width, height, yuvshm);
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diff changeset
212 }
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213 #endif
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214
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diff changeset
215 if ( hwdata->image == NULL ) {
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216 SDL_OutOfMemory();
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217 SDL_FreeYUVOverlay(overlay);
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218 return(NULL);
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diff changeset
219 }
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220 yuvshm->shmid = shmget(IPC_PRIVATE, hwdata->image->data_size,
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diff changeset
221 IPC_CREAT | 0777);
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parents:
diff changeset
222 if ( yuvshm->shmid < 0 ) {
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diff changeset
223 SDL_SetError("Unable to get %d bytes shared memory",
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diff changeset
224 hwdata->image->data_size);
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225 SDL_FreeYUVOverlay(overlay);
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diff changeset
226 return(NULL);
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diff changeset
227 }
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228 yuvshm->shmaddr = (char *) shmat(yuvshm->shmid, 0, 0);
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229 yuvshm->readOnly = False;
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diff changeset
230 hwdata->image->data = yuvshm->shmaddr;
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diff changeset
231
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232 XShmAttach(GFX_Display, yuvshm);
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diff changeset
233 XSync(GFX_Display, False);
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parents:
diff changeset
234 shmctl(yuvshm->shmid, IPC_RMID, 0);
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parents:
diff changeset
235
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diff changeset
236 /* Find the pitch and offset values for the overlay */
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diff changeset
237 overlay->planes = hwdata->image->num_planes;
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diff changeset
238 overlay->pitches = (Uint16 *)malloc(overlay->planes * sizeof(Uint16));
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diff changeset
239 overlay->pixels = (Uint8 **)malloc(overlay->planes * sizeof(Uint8 *));
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parents:
diff changeset
240 if ( !overlay->pitches || !overlay->pixels ) {
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parents:
diff changeset
241 SDL_OutOfMemory();
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parents:
diff changeset
242 SDL_FreeYUVOverlay(overlay);
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parents:
diff changeset
243 return(NULL);
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parents:
diff changeset
244 }
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parents:
diff changeset
245 for ( i=0; i<overlay->planes; ++i ) {
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diff changeset
246 overlay->pitches[i] = hwdata->image->pitches[i];
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parents:
diff changeset
247 overlay->pixels[i] = (Uint8 *)hwdata->image->data +
74212992fb08 Initial revision
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parents:
diff changeset
248 hwdata->image->offsets[i];
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parents:
diff changeset
249 }
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parents:
diff changeset
250
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parents:
diff changeset
251 #ifdef XFREE86_REFRESH_HACK
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parents:
diff changeset
252 /* Work around an XFree86 X server bug (?)
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parents:
diff changeset
253 We can't perform normal updates in windows that have video
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parents:
diff changeset
254 being output to them. See SDL_x11image.c for more details.
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parents:
diff changeset
255 */
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parents:
diff changeset
256 X11_DisableAutoRefresh(this);
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
257 #endif
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parents:
diff changeset
258
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parents:
diff changeset
259 /* We're all done.. */
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parents:
diff changeset
260 return(overlay);
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parents:
diff changeset
261 }
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parents:
diff changeset
262
74212992fb08 Initial revision
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parents:
diff changeset
263 int X11_LockYUVOverlay(_THIS, SDL_Overlay *overlay)
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parents:
diff changeset
264 {
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
265 return(0);
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parents:
diff changeset
266 }
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parents:
diff changeset
267
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parents:
diff changeset
268 void X11_UnlockYUVOverlay(_THIS, SDL_Overlay *overlay)
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parents:
diff changeset
269 {
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
270 return;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
271 }
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parents:
diff changeset
272
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parents:
diff changeset
273 int X11_DisplayYUVOverlay(_THIS, SDL_Overlay *overlay, SDL_Rect *dstrect)
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parents:
diff changeset
274 {
74212992fb08 Initial revision
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parents:
diff changeset
275 struct private_yuvhwdata *hwdata;
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parents:
diff changeset
276
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parents:
diff changeset
277 hwdata = overlay->hwdata;
292
eadc0746dfaf Added SDL_LockRect() and SDL_UnlockRect()
Sam Lantinga <slouken@libsdl.org>
parents: 252
diff changeset
278 SDL_NAME(XvShmPutImage)(GFX_Display, hwdata->port, SDL_Window, SDL_GC,
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
279 hwdata->image, 0, 0, overlay->w, overlay->h,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
280 dstrect->x, dstrect->y, dstrect->w, dstrect->h, False);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
281 XSync(GFX_Display, False);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
282 return(0);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
283 }
74212992fb08 Initial revision
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parents:
diff changeset
284
74212992fb08 Initial revision
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parents:
diff changeset
285 void X11_FreeYUVOverlay(_THIS, SDL_Overlay *overlay)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
286 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
287 struct private_yuvhwdata *hwdata;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
288
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
289 hwdata = overlay->hwdata;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
290 if ( hwdata ) {
292
eadc0746dfaf Added SDL_LockRect() and SDL_UnlockRect()
Sam Lantinga <slouken@libsdl.org>
parents: 252
diff changeset
291 SDL_NAME(XvUngrabPort)(GFX_Display, hwdata->port, CurrentTime);
0
74212992fb08 Initial revision
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parents:
diff changeset
292 if ( hwdata->yuvshm.shmaddr ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
293 XShmDetach(GFX_Display, &hwdata->yuvshm);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
294 shmdt(hwdata->yuvshm.shmaddr);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
295 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
296 if ( hwdata->image ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
297 XFree(hwdata->image);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
298 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
299 free(hwdata);
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
300 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
301 if ( overlay->pitches ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
302 free(overlay->pitches);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
303 overlay->pitches = NULL;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
304 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
305 if ( overlay->pixels ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
306 free(overlay->pixels);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
307 overlay->pixels = NULL;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
308 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
309 #ifdef XFREE86_REFRESH_HACK
74212992fb08 Initial revision
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parents:
diff changeset
310 X11_EnableAutoRefresh(this);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
311 #endif
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
312 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
313
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
314 #endif /* XFREE86_XV */