Mercurial > sdl-ios-xcode
annotate src/video/SDL_sysvideo.h @ 1260:80f8c94b5199
Date: 10 Jun 2003 15:30:59 -0400
From: Mike Shal
Subject: [SDL] Bug in SDL_wave.c?
Hey everyone, I'm not sure if this is a bug in SDL, or if I just have
incorrect WAV files. The problem I'm having is loading multiple
concatenated WAVs from SDL_LoadWAV_RW. Some WAV files put comments at
the end of the file (which may be bad form), and SDL doesn't skip past
them when reading from the RWops. So the next WAV I try to load will
start at the comment section of the previous WAV, which obviously
doesn't work. If anyone else is having this problem, one quick fix you
can do is run sox on the bad WAVs, which strips out all of the comment
sections.
Eg:
$ sox sound.wav tmp.wav
$ mv -f tmp.wav sound.wav
The other fix is to patch SDL_wave.c, which is included with this email.
(Assuming I made the patch correctly :). All it does is calculate how
much remaining space there is in the WAV file after the data chunk, and
does SDL_RWseek to skip it. I don't think it should interfere with
anything else, but if someone could check it that would be nice :). If
the bug is really with SDL and not with my WAVs, can someone work this
into the next version of SDL? Thanks,
-Mike Shal
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Tue, 24 Jan 2006 07:20:18 +0000 |
| parents | 86d0d01290ea |
| children | c9b51268668f |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 SDL - Simple DirectMedia Layer | |
|
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3 Copyright (C) 1997-2004 Sam Lantinga |
| 0 | 4 |
| 5 This library is free software; you can redistribute it and/or | |
| 6 modify it under the terms of the GNU Library General Public | |
| 7 License as published by the Free Software Foundation; either | |
| 8 version 2 of the License, or (at your option) any later version. | |
| 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 | |
| 13 Library General Public License for more details. | |
| 14 | |
| 15 You should have received a copy of the GNU Library General Public | |
| 16 License along with this library; if not, write to the Free | |
| 17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
| 18 | |
| 19 Sam Lantinga | |
|
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20 slouken@libsdl.org |
| 0 | 21 */ |
| 22 | |
| 23 #ifdef SAVE_RCSID | |
| 24 static char rcsid = | |
| 25 "@(#) $Id$"; | |
| 26 #endif | |
| 27 | |
| 28 #ifndef _SDL_sysvideo_h | |
| 29 #define _SDL_sysvideo_h | |
| 30 | |
| 31 #include "SDL_mouse.h" | |
| 32 #define SDL_PROTOTYPES_ONLY | |
| 33 #include "SDL_syswm.h" | |
| 34 #undef SDL_PROTOTYPES_ONLY | |
| 35 | |
| 36 /* This file prototypes the video driver implementation. | |
| 37 This is designed to be easily converted to C++ in the future. | |
| 38 */ | |
| 39 | |
| 40 /* OpenGL is pretty much available on all Windows systems */ | |
| 41 #ifdef WIN32 | |
| 42 #ifndef _WIN32_WCE | |
| 43 #define HAVE_OPENGL | |
| 44 #endif | |
|
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45 #define WIN32_LEAN_AND_MEAN |
| 0 | 46 #include <windows.h> |
| 47 #endif | |
| 48 | |
| 49 #ifdef HAVE_OPENGL | |
| 50 #ifdef MACOSX | |
| 51 #include <OpenGL/gl.h> /* OpenGL.framework */ | |
| 52 #else | |
| 53 #include <GL/gl.h> | |
| 54 #endif /* MACOSX */ | |
| 55 #endif /* HAVE_OPENGL */ | |
| 56 | |
| 57 /* The SDL video driver */ | |
| 58 typedef struct SDL_VideoDevice SDL_VideoDevice; | |
| 59 | |
| 60 /* Define the SDL video driver structure */ | |
| 61 #define _THIS SDL_VideoDevice *_this | |
| 62 #ifndef _STATUS | |
| 63 #define _STATUS SDL_status *status | |
| 64 #endif | |
| 65 struct SDL_VideoDevice { | |
| 66 /* * * */ | |
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67 /* The name of this video driver */ |
| 0 | 68 const char *name; |
| 69 | |
| 70 /* * * */ | |
| 71 /* Initialization/Query functions */ | |
| 72 | |
| 73 /* Initialize the native video subsystem, filling 'vformat' with the | |
| 74 "best" display pixel format, returning 0 or -1 if there's an error. | |
| 75 */ | |
| 76 int (*VideoInit)(_THIS, SDL_PixelFormat *vformat); | |
| 77 | |
| 78 /* List the available video modes for the given pixel format, sorted | |
| 79 from largest to smallest. | |
| 80 */ | |
| 81 SDL_Rect **(*ListModes)(_THIS, SDL_PixelFormat *format, Uint32 flags); | |
| 82 | |
| 83 /* Set the requested video mode, returning a surface which will be | |
| 84 set to the SDL_VideoSurface. The width and height will already | |
| 85 be verified by ListModes(), and the video subsystem is free to | |
| 86 set the mode to a supported bit depth different from the one | |
| 87 specified -- the desired bpp will be emulated with a shadow | |
| 88 surface if necessary. If a new mode is returned, this function | |
| 89 should take care of cleaning up the current mode. | |
| 90 */ | |
| 91 SDL_Surface *(*SetVideoMode)(_THIS, SDL_Surface *current, | |
| 92 int width, int height, int bpp, Uint32 flags); | |
| 93 | |
| 94 /* Toggle the fullscreen mode */ | |
| 95 int (*ToggleFullScreen)(_THIS, int on); | |
| 96 | |
| 97 /* This is called after the video mode has been set, to get the | |
| 98 initial mouse state. It should queue events as necessary to | |
| 99 properly represent the current mouse focus and position. | |
| 100 */ | |
| 101 void (*UpdateMouse)(_THIS); | |
| 102 | |
| 103 /* Create a YUV video surface (possibly overlay) of the given | |
| 104 format. The hardware should be able to perform at least 2x | |
| 105 scaling on display. | |
| 106 */ | |
| 107 SDL_Overlay *(*CreateYUVOverlay)(_THIS, int width, int height, | |
| 108 Uint32 format, SDL_Surface *display); | |
| 109 | |
| 110 /* Sets the color entries { firstcolor .. (firstcolor+ncolors-1) } | |
| 111 of the physical palette to those in 'colors'. If the device is | |
| 112 using a software palette (SDL_HWPALETTE not set), then the | |
| 113 changes are reflected in the logical palette of the screen | |
| 114 as well. | |
| 115 The return value is 1 if all entries could be set properly | |
| 116 or 0 otherwise. | |
| 117 */ | |
| 118 int (*SetColors)(_THIS, int firstcolor, int ncolors, | |
| 119 SDL_Color *colors); | |
| 120 | |
| 121 /* This pointer should exist in the native video subsystem and should | |
| 122 point to an appropriate update function for the current video mode | |
| 123 */ | |
| 124 void (*UpdateRects)(_THIS, int numrects, SDL_Rect *rects); | |
| 125 | |
| 126 /* Reverse the effects VideoInit() -- called if VideoInit() fails | |
| 127 or if the application is shutting down the video subsystem. | |
| 128 */ | |
| 129 void (*VideoQuit)(_THIS); | |
| 130 | |
| 131 /* * * */ | |
| 132 /* Hardware acceleration functions */ | |
| 133 | |
| 134 /* Information about the video hardware */ | |
| 135 SDL_VideoInfo info; | |
| 136 | |
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137 /* The pixel format used when SDL_CreateRGBSurface creates SDL_HWSURFACEs with alpha */ |
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138 SDL_PixelFormat* displayformatalphapixel; |
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139 |
| 0 | 140 /* Allocates a surface in video memory */ |
| 141 int (*AllocHWSurface)(_THIS, SDL_Surface *surface); | |
| 142 | |
| 143 /* Sets the hardware accelerated blit function, if any, based | |
| 144 on the current flags of the surface (colorkey, alpha, etc.) | |
| 145 */ | |
| 146 int (*CheckHWBlit)(_THIS, SDL_Surface *src, SDL_Surface *dst); | |
| 147 | |
| 148 /* Fills a surface rectangle with the given color */ | |
| 149 int (*FillHWRect)(_THIS, SDL_Surface *dst, SDL_Rect *rect, Uint32 color); | |
| 150 | |
| 151 /* Sets video mem colorkey and accelerated blit function */ | |
| 152 int (*SetHWColorKey)(_THIS, SDL_Surface *surface, Uint32 key); | |
| 153 | |
| 154 /* Sets per surface hardware alpha value */ | |
| 155 int (*SetHWAlpha)(_THIS, SDL_Surface *surface, Uint8 value); | |
| 156 | |
| 157 /* Returns a readable/writable surface */ | |
| 158 int (*LockHWSurface)(_THIS, SDL_Surface *surface); | |
| 159 void (*UnlockHWSurface)(_THIS, SDL_Surface *surface); | |
| 160 | |
| 161 /* Performs hardware flipping */ | |
| 162 int (*FlipHWSurface)(_THIS, SDL_Surface *surface); | |
| 163 | |
| 164 /* Frees a previously allocated video surface */ | |
| 165 void (*FreeHWSurface)(_THIS, SDL_Surface *surface); | |
| 166 | |
| 167 /* * * */ | |
| 168 /* Gamma support */ | |
| 169 | |
| 170 Uint16 *gamma; | |
| 171 | |
| 172 /* Set the gamma correction directly (emulated with gamma ramps) */ | |
| 173 int (*SetGamma)(_THIS, float red, float green, float blue); | |
| 174 | |
| 175 /* Get the gamma correction directly (emulated with gamma ramps) */ | |
| 176 int (*GetGamma)(_THIS, float *red, float *green, float *blue); | |
| 177 | |
| 178 /* Set the gamma ramp */ | |
| 179 int (*SetGammaRamp)(_THIS, Uint16 *ramp); | |
| 180 | |
| 181 /* Get the gamma ramp */ | |
| 182 int (*GetGammaRamp)(_THIS, Uint16 *ramp); | |
| 183 | |
| 184 /* * * */ | |
| 185 /* OpenGL support */ | |
| 186 | |
| 187 /* Sets the dll to use for OpenGL and loads it */ | |
| 188 int (*GL_LoadLibrary)(_THIS, const char *path); | |
| 189 | |
| 190 /* Retrieves the address of a function in the gl library */ | |
| 191 void* (*GL_GetProcAddress)(_THIS, const char *proc); | |
| 192 | |
| 193 /* Get attribute information from the windowing system. */ | |
| 194 int (*GL_GetAttribute)(_THIS, SDL_GLattr attrib, int* value); | |
| 195 | |
| 196 /* Make the context associated with this driver current */ | |
| 197 int (*GL_MakeCurrent)(_THIS); | |
| 198 | |
| 199 /* Swap the current buffers in double buffer mode. */ | |
| 200 void (*GL_SwapBuffers)(_THIS); | |
| 201 | |
| 202 /* OpenGL functions for SDL_OPENGLBLIT */ | |
| 203 #ifdef HAVE_OPENGL | |
| 204 #ifndef WIN32 | |
| 205 #define WINAPI | |
| 206 #endif | |
| 207 #define SDL_PROC(ret,func,params) ret (WINAPI *func) params; | |
| 208 #include "SDL_glfuncs.h" | |
| 209 #undef SDL_PROC | |
| 210 | |
| 211 /* Texture id */ | |
| 212 GLuint texture; | |
| 213 #endif | |
| 214 int is_32bit; | |
| 215 | |
| 216 /* * * */ | |
| 217 /* Window manager functions */ | |
| 218 | |
| 219 /* Set the title and icon text */ | |
| 220 void (*SetCaption)(_THIS, const char *title, const char *icon); | |
| 221 | |
| 222 /* Set the window icon image */ | |
| 223 void (*SetIcon)(_THIS, SDL_Surface *icon, Uint8 *mask); | |
| 224 | |
| 225 /* Iconify the window. | |
| 226 This function returns 1 if there is a window manager and the | |
| 227 window was actually iconified, it returns 0 otherwise. | |
| 228 */ | |
| 229 int (*IconifyWindow)(_THIS); | |
| 230 | |
| 231 /* Grab or ungrab keyboard and mouse input */ | |
| 232 SDL_GrabMode (*GrabInput)(_THIS, SDL_GrabMode mode); | |
| 233 | |
| 234 /* Get some platform dependent window information */ | |
| 235 int (*GetWMInfo)(_THIS, SDL_SysWMinfo *info); | |
| 236 | |
| 237 /* * * */ | |
| 238 /* Cursor manager functions */ | |
| 239 | |
| 240 /* Free a window manager cursor | |
| 241 This function can be NULL if CreateWMCursor is also NULL. | |
| 242 */ | |
| 243 void (*FreeWMCursor)(_THIS, WMcursor *cursor); | |
| 244 | |
| 245 /* If not NULL, create a black/white window manager cursor */ | |
| 246 WMcursor *(*CreateWMCursor)(_THIS, | |
| 247 Uint8 *data, Uint8 *mask, int w, int h, int hot_x, int hot_y); | |
| 248 | |
| 249 /* Show the specified cursor, or hide if cursor is NULL */ | |
| 250 int (*ShowWMCursor)(_THIS, WMcursor *cursor); | |
| 251 | |
| 252 /* Warp the window manager cursor to (x,y) | |
| 253 If NULL, a mouse motion event is posted internally. | |
| 254 */ | |
| 255 void (*WarpWMCursor)(_THIS, Uint16 x, Uint16 y); | |
| 256 | |
| 257 /* If not NULL, this is called when a mouse motion event occurs */ | |
| 258 void (*MoveWMCursor)(_THIS, int x, int y); | |
| 259 | |
| 260 /* Determine whether the mouse should be in relative mode or not. | |
| 261 This function is called when the input grab state or cursor | |
| 262 visibility state changes. | |
| 263 If the cursor is not visible, and the input is grabbed, the | |
| 264 driver can place the mouse in relative mode, which may result | |
| 265 in higher accuracy sampling of the pointer motion. | |
| 266 */ | |
| 267 void (*CheckMouseMode)(_THIS); | |
| 268 | |
| 269 /* * * */ | |
| 270 /* Event manager functions */ | |
| 271 | |
| 272 /* Initialize keyboard mapping for this driver */ | |
| 273 void (*InitOSKeymap)(_THIS); | |
| 274 | |
| 275 /* Handle any queued OS events */ | |
| 276 void (*PumpEvents)(_THIS); | |
| 277 | |
| 278 /* * * */ | |
| 279 /* Data common to all drivers */ | |
| 280 SDL_Surface *screen; | |
| 281 SDL_Surface *shadow; | |
| 282 SDL_Surface *visible; | |
| 283 SDL_Palette *physpal; /* physical palette, if != logical palette */ | |
| 284 SDL_Color *gammacols; /* gamma-corrected colours, or NULL */ | |
| 285 char *wm_title; | |
| 286 char *wm_icon; | |
| 287 int offset_x; | |
| 288 int offset_y; | |
| 289 SDL_GrabMode input_grab; | |
| 290 | |
| 291 /* Driver information flags */ | |
| 292 int handles_any_size; /* Driver handles any size video mode */ | |
| 293 | |
| 294 /* * * */ | |
| 295 /* Data used by the GL drivers */ | |
| 296 struct { | |
| 297 int red_size; | |
| 298 int green_size; | |
| 299 int blue_size; | |
| 300 int alpha_size; | |
| 301 int depth_size; | |
|
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302 int buffer_size; |
| 0 | 303 int stencil_size; |
| 304 int double_buffer; | |
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305 int accum_red_size; |
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306 int accum_green_size; |
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307 int accum_blue_size; |
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308 int accum_alpha_size; |
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309 int stereo; |
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310 int multisamplebuffers; |
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311 int multisamplesamples; |
| 0 | 312 int driver_loaded; |
| 313 char driver_path[256]; | |
| 314 void* dll_handle; | |
| 315 } gl_config; | |
| 316 | |
| 317 /* * * */ | |
| 318 /* Data private to this driver */ | |
| 319 struct SDL_PrivateVideoData *hidden; | |
| 320 struct SDL_PrivateGLData *gl_data; | |
| 321 | |
| 322 /* * * */ | |
| 323 /* The function used to dispose of this structure */ | |
| 324 void (*free)(_THIS); | |
| 325 }; | |
| 326 #undef _THIS | |
| 327 | |
| 328 typedef struct VideoBootStrap { | |
| 329 const char *name; | |
| 330 const char *desc; | |
| 331 int (*available)(void); | |
| 332 SDL_VideoDevice *(*create)(int devindex); | |
| 333 } VideoBootStrap; | |
| 334 | |
| 335 #ifdef ENABLE_X11 | |
| 336 extern VideoBootStrap X11_bootstrap; | |
| 337 #endif | |
| 338 #ifdef ENABLE_DGA | |
| 339 extern VideoBootStrap DGA_bootstrap; | |
| 340 #endif | |
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341 #ifdef ENABLE_NANOX |
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342 extern VideoBootStrap NX_bootstrap; |
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343 #endif |
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344 #ifdef ENABLE_IPOD |
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345 extern VideoBootStrap iPod_bootstrap; |
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346 #endif |
| 0 | 347 #ifdef ENABLE_FBCON |
| 348 extern VideoBootStrap FBCON_bootstrap; | |
| 349 #endif | |
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350 #ifdef ENABLE_DIRECTFB |
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351 extern VideoBootStrap DirectFB_bootstrap; |
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352 #endif |
| 0 | 353 #ifdef ENABLE_PS2GS |
| 354 extern VideoBootStrap PS2GS_bootstrap; | |
| 355 #endif | |
| 356 #ifdef ENABLE_GGI | |
| 357 extern VideoBootStrap GGI_bootstrap; | |
| 358 #endif | |
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359 #ifdef ENABLE_VGL |
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360 extern VideoBootStrap VGL_bootstrap; |
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361 #endif |
| 0 | 362 #ifdef ENABLE_SVGALIB |
| 363 extern VideoBootStrap SVGALIB_bootstrap; | |
| 364 #endif | |
| 365 #ifdef ENABLE_AALIB | |
| 366 extern VideoBootStrap AALIB_bootstrap; | |
| 367 #endif | |
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368 #ifdef ENABLE_GAPI |
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369 extern VideoBootStrap GAPI_bootstrap; |
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370 #endif |
| 0 | 371 #ifdef ENABLE_WINDIB |
| 372 extern VideoBootStrap WINDIB_bootstrap; | |
| 373 #endif | |
| 374 #ifdef ENABLE_DIRECTX | |
| 375 extern VideoBootStrap DIRECTX_bootstrap; | |
| 376 #endif | |
| 377 #ifdef ENABLE_BWINDOW | |
| 378 extern VideoBootStrap BWINDOW_bootstrap; | |
| 379 #endif | |
| 380 /* MacOS X gets the proper defines from configure */ | |
| 381 #if defined(macintosh) && !defined(MACOSX) | |
| 382 #define ENABLE_TOOLBOX | |
| 383 #if !TARGET_API_MAC_CARBON | |
| 384 #define ENABLE_DRAWSPROCKET | |
| 385 #endif | |
| 386 #endif | |
| 387 #ifdef ENABLE_TOOLBOX | |
| 388 extern VideoBootStrap TOOLBOX_bootstrap; | |
| 389 #endif | |
| 390 #ifdef ENABLE_DRAWSPROCKET | |
| 391 extern VideoBootStrap DSp_bootstrap; | |
| 392 #endif | |
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393 #ifdef ENABLE_QUARTZ |
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394 extern VideoBootStrap QZ_bootstrap; |
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395 #endif |
| 0 | 396 #ifdef ENABLE_CYBERGRAPHICS |
| 397 extern VideoBootStrap CGX_bootstrap; | |
| 398 #endif | |
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399 #ifdef ENABLE_PHOTON |
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400 extern VideoBootStrap ph_bootstrap; |
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401 #endif |
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402 #ifdef ENABLE_EPOC |
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403 extern VideoBootStrap EPOC_bootstrap; |
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404 #endif |
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405 #ifdef ENABLE_DUMMYVIDEO |
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406 extern VideoBootStrap DUMMY_bootstrap; |
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407 #endif |
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408 #ifdef ENABLE_XBIOS |
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409 extern VideoBootStrap XBIOS_bootstrap; |
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410 #endif |
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411 #ifdef ENABLE_GEM |
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412 extern VideoBootStrap GEM_bootstrap; |
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413 #endif |
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414 #ifdef ENABLE_QTOPIA |
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415 extern VideoBootStrap Qtopia_bootstrap; |
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416 #endif |
| 1187 | 417 #ifdef ENABLE_WSCONS |
| 418 extern VideoBootStrap WSCONS_bootstrap; | |
| 419 #endif | |
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433
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420 #ifdef ENABLE_PICOGUI |
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421 extern VideoBootStrap PG_bootstrap; |
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422 #endif |
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423 #ifdef ENABLE_DC |
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424 extern VideoBootStrap DC_bootstrap; |
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425 #endif |
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426 #ifdef ENABLE_RISCOS |
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427 extern VideoBootStrap RISCOS_bootstrap; |
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428 #endif |
| 1190 | 429 #ifdef __OS2__ |
| 430 extern VideoBootStrap OS2FSLib_bootstrap; | |
| 431 #endif | |
| 0 | 432 /* This is the current video device */ |
| 433 extern SDL_VideoDevice *current_video; | |
| 434 | |
| 435 #define SDL_VideoSurface (current_video->screen) | |
| 436 #define SDL_ShadowSurface (current_video->shadow) | |
| 437 #define SDL_PublicSurface (current_video->visible) | |
| 438 | |
| 439 #endif /* _SDL_sysvideo_h */ |