annotate src/video/x11/SDL_x11yuv.c @ 288:2f5a6062db86

Updated for Watcom C++ and LCC compilers
author Sam Lantinga <slouken@libsdl.org>
date Thu, 28 Feb 2002 00:28:26 +0000
parents e8157fcb3114
children eadc0746dfaf
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 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 <X11/extensions/Xvlib.h>
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39
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40 #include "SDL_error.h"
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41 #include "SDL_video.h"
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42 #include "SDL_x11yuv_c.h"
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43 #include "SDL_yuvfuncs.h"
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44
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45 #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
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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 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 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 == XvQueryExtension(GFX_Display, &j, &j, &j, &j, &j)) &&
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84 (Success == 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
0
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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 XvImageFormatValues *formats;
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110 formats = 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
0
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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 == 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 }
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127 }
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128 }
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129 if ( xv_port == -1 ) {
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130 SDL_SetError("No available video ports for requested format");
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131 return(NULL);
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132 }
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133
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134 /* Create the overlay structure */
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135 overlay = (SDL_Overlay *)malloc(sizeof *overlay);
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136 if ( overlay == NULL ) {
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137 XvUngrabPort(GFX_Display, xv_port, CurrentTime);
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138 SDL_OutOfMemory();
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139 return(NULL);
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140 }
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141 memset(overlay, 0, (sizeof *overlay));
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142
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143 /* Fill in the basic members */
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144 overlay->format = format;
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145 overlay->w = width;
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146 overlay->h = height;
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147
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148 /* Set up the YUV surface function structure */
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149 overlay->hwfuncs = &x11_yuvfuncs;
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150 overlay->hw_overlay = 1;
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151
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152 /* Create the pixel data and lookup tables */
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153 hwdata = (struct private_yuvhwdata *)malloc(sizeof *hwdata);
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154 overlay->hwdata = hwdata;
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155 if ( hwdata == NULL ) {
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156 XvUngrabPort(GFX_Display, xv_port, CurrentTime);
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157 SDL_OutOfMemory();
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158 SDL_FreeYUVOverlay(overlay);
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159 return(NULL);
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160 }
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161 yuvshm = &hwdata->yuvshm;
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162 memset(yuvshm, 0, sizeof(*yuvshm));
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163 hwdata->port = xv_port;
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164 hwdata->image = XvShmCreateImage(GFX_Display, xv_port, format,
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165 0, width, height, yuvshm);
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166
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167 #ifdef PITCH_WORKAROUND
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168 if ( hwdata->image != NULL && hwdata->image->pitches[0] != width )
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169 {
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170 /* Ajust overlay width according to pitch */
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171 switch (format) {
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172 case SDL_YV12_OVERLAY:
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173 case SDL_IYUV_OVERLAY:
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174 width = hwdata->image->pitches[0];
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175 break;
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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 width = hwdata->image->pitches[0] / 2;
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180 break;
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181 default:
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182 /* We should never get here (caught above) */
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183 return(NULL);
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184 }
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185
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186 XFree(hwdata->image);
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187 hwdata->image = XvShmCreateImage(GFX_Display, xv_port, format,
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188 0, width, height, yuvshm);
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189 }
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190 #endif
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191
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192 if ( hwdata->image == NULL ) {
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193 SDL_OutOfMemory();
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194 SDL_FreeYUVOverlay(overlay);
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195 return(NULL);
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196 }
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197 yuvshm->shmid = shmget(IPC_PRIVATE, hwdata->image->data_size,
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198 IPC_CREAT | 0777);
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199 if ( yuvshm->shmid < 0 ) {
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200 SDL_SetError("Unable to get %d bytes shared memory",
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201 hwdata->image->data_size);
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202 SDL_FreeYUVOverlay(overlay);
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203 return(NULL);
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204 }
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205 yuvshm->shmaddr = (char *) shmat(yuvshm->shmid, 0, 0);
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206 yuvshm->readOnly = False;
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207 hwdata->image->data = yuvshm->shmaddr;
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208
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209 XShmAttach(GFX_Display, yuvshm);
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210 XSync(GFX_Display, False);
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211 shmctl(yuvshm->shmid, IPC_RMID, 0);
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212
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213 /* Find the pitch and offset values for the overlay */
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214 overlay->planes = hwdata->image->num_planes;
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215 overlay->pitches = (Uint16 *)malloc(overlay->planes * sizeof(Uint16));
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216 overlay->pixels = (Uint8 **)malloc(overlay->planes * sizeof(Uint8 *));
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217 if ( !overlay->pitches || !overlay->pixels ) {
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218 SDL_OutOfMemory();
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219 SDL_FreeYUVOverlay(overlay);
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220 return(NULL);
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221 }
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222 for ( i=0; i<overlay->planes; ++i ) {
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223 overlay->pitches[i] = hwdata->image->pitches[i];
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224 overlay->pixels[i] = (Uint8 *)hwdata->image->data +
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225 hwdata->image->offsets[i];
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226 }
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227
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228 #ifdef XFREE86_REFRESH_HACK
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229 /* Work around an XFree86 X server bug (?)
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230 We can't perform normal updates in windows that have video
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231 being output to them. See SDL_x11image.c for more details.
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232 */
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233 X11_DisableAutoRefresh(this);
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234 #endif
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235
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diff changeset
236 /* We're all done.. */
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237 return(overlay);
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238 }
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239
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240 int X11_LockYUVOverlay(_THIS, SDL_Overlay *overlay)
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diff changeset
241 {
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242 return(0);
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243 }
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diff changeset
244
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245 void X11_UnlockYUVOverlay(_THIS, SDL_Overlay *overlay)
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246 {
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247 return;
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248 }
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249
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250 int X11_DisplayYUVOverlay(_THIS, SDL_Overlay *overlay, SDL_Rect *dstrect)
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251 {
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252 struct private_yuvhwdata *hwdata;
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diff changeset
253
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254 hwdata = overlay->hwdata;
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diff changeset
255 XvShmPutImage(GFX_Display, hwdata->port, SDL_Window, SDL_GC,
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diff changeset
256 hwdata->image, 0, 0, overlay->w, overlay->h,
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diff changeset
257 dstrect->x, dstrect->y, dstrect->w, dstrect->h, False);
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diff changeset
258 XSync(GFX_Display, False);
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diff changeset
259 return(0);
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parents:
diff changeset
260 }
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parents:
diff changeset
261
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diff changeset
262 void X11_FreeYUVOverlay(_THIS, SDL_Overlay *overlay)
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parents:
diff changeset
263 {
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diff changeset
264 struct private_yuvhwdata *hwdata;
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diff changeset
265
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diff changeset
266 hwdata = overlay->hwdata;
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diff changeset
267 if ( hwdata ) {
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diff changeset
268 XvUngrabPort(GFX_Display, hwdata->port, CurrentTime);
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diff changeset
269 if ( hwdata->yuvshm.shmaddr ) {
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diff changeset
270 XShmDetach(GFX_Display, &hwdata->yuvshm);
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diff changeset
271 shmdt(hwdata->yuvshm.shmaddr);
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parents:
diff changeset
272 }
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diff changeset
273 if ( hwdata->image ) {
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diff changeset
274 XFree(hwdata->image);
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parents:
diff changeset
275 }
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diff changeset
276 free(hwdata);
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parents:
diff changeset
277 }
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parents:
diff changeset
278 if ( overlay->pitches ) {
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parents:
diff changeset
279 free(overlay->pitches);
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diff changeset
280 overlay->pitches = NULL;
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parents:
diff changeset
281 }
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diff changeset
282 if ( overlay->pixels ) {
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diff changeset
283 free(overlay->pixels);
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diff changeset
284 overlay->pixels = NULL;
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parents:
diff changeset
285 }
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diff changeset
286 #ifdef XFREE86_REFRESH_HACK
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diff changeset
287 X11_EnableAutoRefresh(this);
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parents:
diff changeset
288 #endif
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diff changeset
289 }
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diff changeset
290
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diff changeset
291 #endif /* XFREE86_XV */