Mercurial > sdl-ios-xcode
annotate src/video/x11/SDL_x11yuv.c @ 1642:f1211a4b7380
Fixed bug #189
Clip the overlay destination rectangle to the screen area on X11
author | Sam Lantinga <slouken@libsdl.org> |
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date | Mon, 17 Apr 2006 05:38:33 +0000 |
parents | 3ba88cb7eb1b |
children | 51038e80ae59 |
rev | line source |
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0 | 1 /* |
2 SDL - Simple DirectMedia Layer | |
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3 Copyright (C) 1997-2006 Sam Lantinga |
0 | 4 |
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 |
0 | 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. |
0 | 9 |
10 This library is distributed in the hope that it will be useful, | |
11 but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
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13 Lesser General Public License for more details. |
0 | 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 |
0 | 18 |
19 Sam Lantinga | |
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20 slouken@libsdl.org |
0 | 21 */ |
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22 #include "SDL_config.h" |
0 | 23 |
24 /* This is the XFree86 Xv extension implementation of YUV video overlays */ | |
25 | |
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26 #if SDL_VIDEO_DRIVER_X11_XV |
0 | 27 |
28 #include <X11/Xlib.h> | |
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29 #ifndef NO_SHARED_MEMORY |
0 | 30 #include <sys/ipc.h> |
31 #include <sys/shm.h> | |
32 #include <X11/extensions/XShm.h> | |
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33 #endif |
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34 #include "../Xext/extensions/Xvlib.h" |
0 | 35 |
36 #include "SDL_x11yuv_c.h" | |
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37 #include "../SDL_yuvfuncs.h" |
0 | 38 |
39 #define XFREE86_REFRESH_HACK | |
40 #ifdef XFREE86_REFRESH_HACK | |
41 #include "SDL_x11image_c.h" | |
42 #endif | |
43 | |
44 /* Workaround when pitch != width */ | |
45 #define PITCH_WORKAROUND | |
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 |
0 | 50 /* The functions used to manipulate software video overlays */ |
51 static struct private_yuvhwfuncs x11_yuvfuncs = { | |
52 X11_LockYUVOverlay, | |
53 X11_UnlockYUVOverlay, | |
54 X11_DisplayYUVOverlay, | |
55 X11_FreeYUVOverlay | |
56 }; | |
57 | |
58 struct private_yuvhwdata { | |
59 int port; | |
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60 #ifndef NO_SHARED_MEMORY |
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61 int yuv_use_mitshm; |
0 | 62 XShmSegmentInfo yuvshm; |
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63 #endif |
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64 SDL_NAME(XvImage) *image; |
0 | 65 }; |
66 | |
67 | |
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68 static int (*X_handler)(Display *, XErrorEvent *) = NULL; |
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69 |
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70 #ifndef NO_SHARED_MEMORY |
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71 /* Shared memory error handler routine */ |
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72 static int shm_error; |
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73 static int shm_errhandler(Display *d, XErrorEvent *e) |
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74 { |
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75 if ( e->error_code == BadAccess ) { |
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76 shm_error = True; |
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77 return(0); |
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78 } else |
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79 return(X_handler(d,e)); |
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80 } |
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81 #endif /* !NO_SHARED_MEMORY */ |
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82 |
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83 static int xv_error; |
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84 static int xv_errhandler(Display *d, XErrorEvent *e) |
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85 { |
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86 if ( e->error_code == BadMatch ) { |
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87 xv_error = True; |
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88 return(0); |
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89 } else |
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90 return(X_handler(d,e)); |
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91 } |
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92 |
0 | 93 SDL_Overlay *X11_CreateYUVOverlay(_THIS, int width, int height, Uint32 format, SDL_Surface *display) |
94 { | |
95 SDL_Overlay *overlay; | |
96 struct private_yuvhwdata *hwdata; | |
97 int xv_port; | |
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98 unsigned int i, j, k; |
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99 unsigned int adaptors; |
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100 SDL_NAME(XvAdaptorInfo) *ainfo; |
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101 int bpp; |
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102 #ifndef NO_SHARED_MEMORY |
0 | 103 XShmSegmentInfo *yuvshm; |
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104 #endif |
0 | 105 |
106 /* Look for the XVideo extension with a valid port for this format */ | |
107 xv_port = -1; | |
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108 if ( (Success == SDL_NAME(XvQueryExtension)(GFX_Display, &j, &j, &j, &j, &j)) && |
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109 (Success == SDL_NAME(XvQueryAdaptors)(GFX_Display, |
0 | 110 RootWindow(GFX_Display, SDL_Screen), |
111 &adaptors, &ainfo)) ) { | |
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112 #ifdef USE_LAST_ADAPTOR |
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113 for ( i=0; i < adaptors; ++i ) |
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114 #else |
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115 for ( i=0; (i < adaptors) && (xv_port == -1); ++i ) |
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116 #endif /* USE_LAST_ADAPTOR */ |
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117 { |
0 | 118 /* Check to see if the visual can be used */ |
119 if ( BUGGY_XFREE86(<=, 4001) ) { | |
120 int visual_ok = 0; | |
121 for ( j=0; j<ainfo[i].num_formats; ++j ) { | |
122 if ( ainfo[i].formats[j].visual_id == | |
123 SDL_Visual->visualid ) { | |
124 visual_ok = 1; | |
125 break; | |
126 } | |
127 } | |
128 if ( ! visual_ok ) { | |
129 continue; | |
130 } | |
131 } | |
132 if ( (ainfo[i].type & XvInputMask) && | |
133 (ainfo[i].type & XvImageMask) ) { | |
134 int num_formats; | |
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135 SDL_NAME(XvImageFormatValues) *formats; |
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136 formats = SDL_NAME(XvListImageFormats)(GFX_Display, |
0 | 137 ainfo[i].base_id, &num_formats); |
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138 #ifdef USE_LAST_ADAPTOR |
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139 for ( j=0; j < num_formats; ++j ) |
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140 #else |
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141 for ( j=0; (j < num_formats) && (xv_port == -1); ++j ) |
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142 #endif /* USE_LAST_ADAPTOR */ |
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143 { |
0 | 144 if ( (Uint32)formats[j].id == format ) { |
145 for ( k=0; k < ainfo[i].num_ports; ++k ) { | |
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146 if ( Success == SDL_NAME(XvGrabPort)(GFX_Display, ainfo[i].base_id+k, CurrentTime) ) { |
0 | 147 xv_port = ainfo[i].base_id+k; |
148 break; | |
149 } | |
150 } | |
151 } | |
152 } | |
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153 if ( formats ) { |
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154 XFree(formats); |
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155 } |
0 | 156 } |
157 } | |
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158 SDL_NAME(XvFreeAdaptorInfo)(ainfo); |
0 | 159 } |
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160 |
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161 /* Precalculate the bpp for the pitch workaround below */ |
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162 switch (format) { |
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163 /* Add any other cases we need to support... */ |
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164 case SDL_YUY2_OVERLAY: |
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165 case SDL_UYVY_OVERLAY: |
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166 case SDL_YVYU_OVERLAY: |
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167 bpp = 2; |
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168 break; |
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169 default: |
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170 bpp = 1; |
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171 break; |
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172 } |
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173 |
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174 #if 0 |
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175 /* |
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176 * !!! FIXME: |
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177 * "Here are some diffs for X11 and yuv. Note that the last part 2nd |
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178 * diff should probably be a new call to XvQueryAdaptorFree with ainfo |
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179 * and the number of adaptors, instead of the loop through like I did." |
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180 * |
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181 * ACHTUNG: This is broken! It looks like XvFreeAdaptorInfo does this |
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182 * for you, so we end up with a double-free. I need to look at this |
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183 * more closely... --ryan. |
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184 */ |
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185 for ( i=0; i < adaptors; ++i ) { |
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186 if (ainfo[i].name != NULL) Xfree(ainfo[i].name); |
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187 if (ainfo[i].formats != NULL) Xfree(ainfo[i].formats); |
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188 } |
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189 Xfree(ainfo); |
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190 #endif |
429
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191 |
0 | 192 if ( xv_port == -1 ) { |
193 SDL_SetError("No available video ports for requested format"); | |
194 return(NULL); | |
195 } | |
196 | |
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197 /* Enable auto-painting of the overlay colorkey */ |
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198 { |
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199 static const char *attr[] = { "XV_AUTOPAINT_COLORKEY", "XV_AUTOPAINT_COLOURKEY" }; |
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200 unsigned int i; |
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201 |
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202 SDL_NAME(XvSelectPortNotify)(GFX_Display, xv_port, True); |
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203 X_handler = XSetErrorHandler(xv_errhandler); |
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204 for ( i=0; i < sizeof(attr)/(sizeof attr[0]); ++i ) { |
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205 Atom a; |
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206 |
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207 xv_error = False; |
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208 a = XInternAtom(GFX_Display, attr[i], True); |
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209 if ( a != None ) { |
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210 SDL_NAME(XvSetPortAttribute)(GFX_Display, xv_port, a, 1); |
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211 XSync(GFX_Display, True); |
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212 if ( ! xv_error ) { |
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213 break; |
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214 } |
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215 } |
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216 } |
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217 XSetErrorHandler(X_handler); |
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218 SDL_NAME(XvSelectPortNotify)(GFX_Display, xv_port, False); |
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219 } |
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220 |
0 | 221 /* Create the overlay structure */ |
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222 overlay = (SDL_Overlay *)SDL_malloc(sizeof *overlay); |
0 | 223 if ( overlay == NULL ) { |
292
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224 SDL_NAME(XvUngrabPort)(GFX_Display, xv_port, CurrentTime); |
0 | 225 SDL_OutOfMemory(); |
226 return(NULL); | |
227 } | |
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228 SDL_memset(overlay, 0, (sizeof *overlay)); |
0 | 229 |
230 /* Fill in the basic members */ | |
231 overlay->format = format; | |
232 overlay->w = width; | |
233 overlay->h = height; | |
234 | |
235 /* Set up the YUV surface function structure */ | |
236 overlay->hwfuncs = &x11_yuvfuncs; | |
237 overlay->hw_overlay = 1; | |
238 | |
239 /* Create the pixel data and lookup tables */ | |
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240 hwdata = (struct private_yuvhwdata *)SDL_malloc(sizeof *hwdata); |
0 | 241 overlay->hwdata = hwdata; |
242 if ( hwdata == NULL ) { | |
292
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243 SDL_NAME(XvUngrabPort)(GFX_Display, xv_port, CurrentTime); |
0 | 244 SDL_OutOfMemory(); |
245 SDL_FreeYUVOverlay(overlay); | |
246 return(NULL); | |
247 } | |
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248 hwdata->port = xv_port; |
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249 #ifndef NO_SHARED_MEMORY |
0 | 250 yuvshm = &hwdata->yuvshm; |
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251 SDL_memset(yuvshm, 0, sizeof(*yuvshm)); |
292
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252 hwdata->image = SDL_NAME(XvShmCreateImage)(GFX_Display, xv_port, format, |
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253 0, width, height, yuvshm); |
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254 #ifdef PITCH_WORKAROUND |
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255 if ( hwdata->image != NULL && hwdata->image->pitches[0] != (width*bpp) ) { |
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256 /* Ajust overlay width according to pitch */ |
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257 XFree(hwdata->image); |
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258 width = hwdata->image->pitches[0] / bpp; |
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259 hwdata->image = SDL_NAME(XvShmCreateImage)(GFX_Display, xv_port, format, |
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260 0, width, height, yuvshm); |
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261 } |
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262 #endif /* PITCH_WORKAROUND */ |
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263 hwdata->yuv_use_mitshm = (hwdata->image != NULL); |
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264 if ( hwdata->yuv_use_mitshm ) { |
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265 yuvshm->shmid = shmget(IPC_PRIVATE, hwdata->image->data_size, |
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266 IPC_CREAT | 0777); |
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267 if ( yuvshm->shmid >= 0 ) { |
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268 yuvshm->shmaddr = (char *)shmat(yuvshm->shmid, 0, 0); |
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269 yuvshm->readOnly = False; |
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270 if ( yuvshm->shmaddr != (char *)-1 ) { |
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271 shm_error = False; |
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272 X_handler = XSetErrorHandler(shm_errhandler); |
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273 XShmAttach(GFX_Display, yuvshm); |
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274 XSync(GFX_Display, True); |
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275 XSetErrorHandler(X_handler); |
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276 if ( shm_error ) |
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277 shmdt(yuvshm->shmaddr); |
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278 } else { |
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279 shm_error = True; |
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280 } |
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281 shmctl(yuvshm->shmid, IPC_RMID, NULL); |
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282 } else { |
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283 shm_error = True; |
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284 } |
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285 if ( shm_error ) { |
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286 XFree(hwdata->image); |
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287 hwdata->yuv_use_mitshm = 0; |
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288 } else { |
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289 hwdata->image->data = yuvshm->shmaddr; |
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290 } |
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291 } |
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292 if ( !hwdata->yuv_use_mitshm ) |
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293 #endif /* NO_SHARED_MEMORY */ |
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294 { |
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295 hwdata->image = SDL_NAME(XvCreateImage)(GFX_Display, xv_port, format, |
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296 0, width, height); |
0 | 297 |
298 #ifdef PITCH_WORKAROUND | |
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299 if ( hwdata->image != NULL && hwdata->image->pitches[0] != (width*bpp) ) { |
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300 /* Ajust overlay width according to pitch */ |
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301 XFree(hwdata->image); |
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302 width = hwdata->image->pitches[0] / bpp; |
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303 hwdata->image = SDL_NAME(XvCreateImage)(GFX_Display, xv_port, format, |
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304 0, width, height); |
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305 } |
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306 #endif /* PITCH_WORKAROUND */ |
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307 if ( hwdata->image == NULL ) { |
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308 SDL_SetError("Couldn't create XVideo image"); |
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309 SDL_FreeYUVOverlay(overlay); |
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310 return(NULL); |
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311 } |
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312 hwdata->image->data = SDL_malloc(hwdata->image->data_size); |
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313 if ( hwdata->image->data == NULL ) { |
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314 SDL_OutOfMemory(); |
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315 SDL_FreeYUVOverlay(overlay); |
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316 return(NULL); |
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317 } |
0 | 318 } |
319 | |
320 /* Find the pitch and offset values for the overlay */ | |
321 overlay->planes = hwdata->image->num_planes; | |
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322 overlay->pitches = (Uint16 *)SDL_malloc(overlay->planes * sizeof(Uint16)); |
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323 overlay->pixels = (Uint8 **)SDL_malloc(overlay->planes * sizeof(Uint8 *)); |
0 | 324 if ( !overlay->pitches || !overlay->pixels ) { |
325 SDL_OutOfMemory(); | |
326 SDL_FreeYUVOverlay(overlay); | |
327 return(NULL); | |
328 } | |
329 for ( i=0; i<overlay->planes; ++i ) { | |
330 overlay->pitches[i] = hwdata->image->pitches[i]; | |
331 overlay->pixels[i] = (Uint8 *)hwdata->image->data + | |
332 hwdata->image->offsets[i]; | |
333 } | |
334 | |
335 #ifdef XFREE86_REFRESH_HACK | |
336 /* Work around an XFree86 X server bug (?) | |
337 We can't perform normal updates in windows that have video | |
338 being output to them. See SDL_x11image.c for more details. | |
339 */ | |
340 X11_DisableAutoRefresh(this); | |
341 #endif | |
342 | |
343 /* We're all done.. */ | |
344 return(overlay); | |
345 } | |
346 | |
347 int X11_LockYUVOverlay(_THIS, SDL_Overlay *overlay) | |
348 { | |
349 return(0); | |
350 } | |
351 | |
352 void X11_UnlockYUVOverlay(_THIS, SDL_Overlay *overlay) | |
353 { | |
354 return; | |
355 } | |
356 | |
357 int X11_DisplayYUVOverlay(_THIS, SDL_Overlay *overlay, SDL_Rect *dstrect) | |
358 { | |
359 struct private_yuvhwdata *hwdata; | |
1642 | 360 int srcx, srcy, srcw, srch; |
361 int dstx, dsty, dstw, dsth; | |
0 | 362 |
363 hwdata = overlay->hwdata; | |
1642 | 364 |
365 /* Clip the rectangle to the screen area */ | |
366 srcx = 0; | |
367 srcy = 0; | |
368 srcw = overlay->w; | |
369 srch = overlay->h; | |
370 dstx = dstrect->x; | |
371 dsty = dstrect->y; | |
372 dstw = dstrect->w; | |
373 dsth = dstrect->h; | |
374 if ( dstx < 0 ) { | |
375 srcw += (dstx * overlay->w) / dstrect->w; | |
376 dstw += dstx; | |
377 srcx -= (dstx * overlay->w) / dstrect->w; | |
378 dstx = 0; | |
379 } | |
380 if ( (dstx+dstw) > this->screen->w ) { | |
381 int extra = (dstx+dstw - this->screen->w); | |
382 srcw -= (extra * overlay->w) / dstrect->w; | |
383 dstw -= extra; | |
384 } | |
385 if ( dsty < 0 ) { | |
386 srch += (dsty * overlay->h) / dstrect->h; | |
387 dsth += dsty; | |
388 srcy -= (dsty * overlay->h) / dstrect->h; | |
389 dsty = 0; | |
390 } | |
391 if ( (dsty+dsth) > this->screen->h ) { | |
392 int extra = (dsty+dsth - this->screen->h); | |
393 srch -= (extra * overlay->h) / dstrect->h; | |
394 dsth -= extra; | |
395 } | |
396 if ( srcw <= 0 || srch <= 0 || | |
397 srch <= 0 || dsth <= 0 ) { | |
398 return; | |
399 } | |
400 | |
813
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parents:
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401 #ifndef NO_SHARED_MEMORY |
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402 if ( hwdata->yuv_use_mitshm ) { |
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403 SDL_NAME(XvShmPutImage)(GFX_Display, hwdata->port, SDL_Window, SDL_GC, |
1642 | 404 hwdata->image, |
405 srcx, srcy, srcw, srch, dstx, dsty, dstw, dsth, False); | |
813
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parents:
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406 } |
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407 else |
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408 #endif |
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409 { |
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410 SDL_NAME(XvPutImage)(GFX_Display, hwdata->port, SDL_Window, SDL_GC, |
1642 | 411 hwdata->image, |
412 srcx, srcy, srcw, srch, dstx, dsty, dstw, dsth); | |
813
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413 } |
1575
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Updated dynamic X11 code. See details in Bugzilla #170.
Ryan C. Gordon <icculus@icculus.org>
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414 XSync(GFX_Display, False); |
0 | 415 return(0); |
416 } | |
417 | |
418 void X11_FreeYUVOverlay(_THIS, SDL_Overlay *overlay) | |
419 { | |
420 struct private_yuvhwdata *hwdata; | |
421 | |
422 hwdata = overlay->hwdata; | |
423 if ( hwdata ) { | |
292
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Added SDL_LockRect() and SDL_UnlockRect()
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diff
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424 SDL_NAME(XvUngrabPort)(GFX_Display, hwdata->port, CurrentTime); |
813
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parents:
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425 #ifndef NO_SHARED_MEMORY |
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426 if ( hwdata->yuv_use_mitshm ) { |
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Updated dynamic X11 code. See details in Bugzilla #170.
Ryan C. Gordon <icculus@icculus.org>
parents:
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|
427 XShmDetach(GFX_Display, &hwdata->yuvshm); |
0 | 428 shmdt(hwdata->yuvshm.shmaddr); |
429 } | |
813
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430 #endif |
0 | 431 if ( hwdata->image ) { |
1575
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Ryan C. Gordon <icculus@icculus.org>
parents:
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432 XFree(hwdata->image); |
0 | 433 } |
1336
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Use SDL_ prefixed versions of C library functions.
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parents:
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434 SDL_free(hwdata); |
0 | 435 } |
436 if ( overlay->pitches ) { | |
1336
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437 SDL_free(overlay->pitches); |
0 | 438 overlay->pitches = NULL; |
439 } | |
440 if ( overlay->pixels ) { | |
1336
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441 SDL_free(overlay->pixels); |
0 | 442 overlay->pixels = NULL; |
443 } | |
444 #ifdef XFREE86_REFRESH_HACK | |
445 X11_EnableAutoRefresh(this); | |
446 #endif | |
447 } | |
448 | |
1361
19418e4422cb
New configure-based build system. Still work in progress, but much improved
Sam Lantinga <slouken@libsdl.org>
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diff
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449 #endif /* SDL_VIDEO_DRIVER_X11_XV */ |