Mercurial > sdl-ios-xcode
annotate include/SDL_video.h @ 330:5fed858d551c
Date: 03 Apr 2002 15:28:09 +0200
From: Alexander Pipelka <pipelka@bms-austria.com>
Subject: SDL patches
This one adds 2 new videomodes for the fbconsole.
720x576, 720x480
These are used by the NSC settopbox we are using for MPEG2 decoding.
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Wed, 03 Apr 2002 21:45:25 +0000 |
| parents | f6ffac90895c |
| children | 9154ec9ca3d2 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 SDL - Simple DirectMedia Layer | |
|
297
f6ffac90895c
Updated copyright information for 2002
Sam Lantinga <slouken@libsdl.org>
parents:
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changeset
|
3 Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002 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 | |
|
251
b8688cfdc232
Updated the headers with the correct e-mail address
Sam Lantinga <slouken@libsdl.org>
parents:
130
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changeset
|
20 slouken@libsdl.org |
| 0 | 21 */ |
| 22 | |
| 23 #ifdef SAVE_RCSID | |
| 24 static char rcsid = | |
| 25 "@(#) $Id$"; | |
| 26 #endif | |
| 27 | |
| 28 /* Header file for access to the SDL raw framebuffer window */ | |
| 29 | |
| 30 #ifndef _SDL_video_h | |
| 31 #define _SDL_video_h | |
| 32 | |
| 33 #include <stdio.h> | |
| 34 | |
| 35 #include "SDL_types.h" | |
| 36 #include "SDL_mutex.h" | |
| 37 #include "SDL_rwops.h" | |
| 38 | |
| 39 #include "begin_code.h" | |
| 40 /* Set up for C function definitions, even when using C++ */ | |
| 41 #ifdef __cplusplus | |
| 42 extern "C" { | |
| 43 #endif | |
| 44 | |
| 45 /* Transparency definitions: These define alpha as the opacity of a surface */ | |
| 46 #define SDL_ALPHA_OPAQUE 255 | |
| 47 #define SDL_ALPHA_TRANSPARENT 0 | |
| 48 | |
| 49 /* Useful data types */ | |
| 50 typedef struct { | |
| 51 Sint16 x, y; | |
| 52 Uint16 w, h; | |
| 53 } SDL_Rect; | |
| 54 | |
| 55 typedef struct { | |
| 56 Uint8 r; | |
| 57 Uint8 g; | |
| 58 Uint8 b; | |
| 59 Uint8 unused; | |
| 60 } SDL_Color; | |
| 61 | |
| 62 typedef struct { | |
| 63 int ncolors; | |
| 64 SDL_Color *colors; | |
| 65 } SDL_Palette; | |
| 66 | |
| 67 /* Everything in the pixel format structure is read-only */ | |
| 68 typedef struct SDL_PixelFormat { | |
| 69 SDL_Palette *palette; | |
| 70 Uint8 BitsPerPixel; | |
| 71 Uint8 BytesPerPixel; | |
| 72 Uint8 Rloss; | |
| 73 Uint8 Gloss; | |
| 74 Uint8 Bloss; | |
| 75 Uint8 Aloss; | |
| 76 Uint8 Rshift; | |
| 77 Uint8 Gshift; | |
| 78 Uint8 Bshift; | |
| 79 Uint8 Ashift; | |
| 80 Uint32 Rmask; | |
| 81 Uint32 Gmask; | |
| 82 Uint32 Bmask; | |
| 83 Uint32 Amask; | |
| 84 | |
| 85 /* RGB color key information */ | |
| 86 Uint32 colorkey; | |
| 87 /* Alpha value information (per-surface alpha) */ | |
| 88 Uint8 alpha; | |
| 89 } SDL_PixelFormat; | |
| 90 | |
| 91 /* typedef for private surface blitting functions */ | |
| 92 struct SDL_Surface; | |
| 93 typedef int (*SDL_blit)(struct SDL_Surface *src, SDL_Rect *srcrect, | |
| 94 struct SDL_Surface *dst, SDL_Rect *dstrect); | |
| 95 | |
| 96 /* This structure should be treated as read-only, except for 'pixels', | |
| 97 which, if not NULL, contains the raw pixel data for the surface. | |
| 98 */ | |
| 99 typedef struct SDL_Surface { | |
| 100 Uint32 flags; /* Read-only */ | |
| 101 SDL_PixelFormat *format; /* Read-only */ | |
| 102 int w, h; /* Read-only */ | |
| 103 Uint16 pitch; /* Read-only */ | |
| 104 void *pixels; /* Read-write */ | |
| 105 int offset; /* Private */ | |
| 106 | |
| 107 /* Hardware-specific surface info */ | |
| 108 struct private_hwdata *hwdata; | |
| 109 | |
| 110 /* clipping information */ | |
| 111 SDL_Rect clip_rect; /* Read-only */ | |
| 112 Uint32 unused1; /* for binary compatibility */ | |
| 113 | |
| 114 /* Allow recursive locks */ | |
| 115 Uint32 locked; /* Private */ | |
| 116 | |
| 117 /* info for fast blit mapping to other surfaces */ | |
| 118 struct SDL_BlitMap *map; /* Private */ | |
| 119 | |
| 120 /* format version, bumped at every change to invalidate blit maps */ | |
| 121 unsigned int format_version; /* Private */ | |
| 122 | |
| 123 /* Reference count -- used when freeing surface */ | |
| 124 int refcount; /* Read-mostly */ | |
| 125 } SDL_Surface; | |
| 126 | |
| 127 /* These are the currently supported flags for the SDL_surface */ | |
| 128 /* Available for SDL_CreateRGBSurface() or SDL_SetVideoMode() */ | |
| 129 #define SDL_SWSURFACE 0x00000000 /* Surface is in system memory */ | |
| 130 #define SDL_HWSURFACE 0x00000001 /* Surface is in video memory */ | |
| 131 #define SDL_ASYNCBLIT 0x00000004 /* Use asynchronous blits if possible */ | |
| 132 /* Available for SDL_SetVideoMode() */ | |
| 133 #define SDL_ANYFORMAT 0x10000000 /* Allow any video depth/pixel-format */ | |
| 134 #define SDL_HWPALETTE 0x20000000 /* Surface has exclusive palette */ | |
| 135 #define SDL_DOUBLEBUF 0x40000000 /* Set up double-buffered video mode */ | |
| 136 #define SDL_FULLSCREEN 0x80000000 /* Surface is a full screen display */ | |
| 137 #define SDL_OPENGL 0x00000002 /* Create an OpenGL rendering context */ | |
| 138 #define SDL_OPENGLBLIT 0x0000000A /* Create an OpenGL rendering context and use it for blitting */ | |
| 139 #define SDL_RESIZABLE 0x00000010 /* This video mode may be resized */ | |
| 140 #define SDL_NOFRAME 0x00000020 /* No window caption or edge frame */ | |
| 141 /* Used internally (read-only) */ | |
| 142 #define SDL_HWACCEL 0x00000100 /* Blit uses hardware acceleration */ | |
| 143 #define SDL_SRCCOLORKEY 0x00001000 /* Blit uses a source color key */ | |
| 144 #define SDL_RLEACCELOK 0x00002000 /* Private flag */ | |
| 145 #define SDL_RLEACCEL 0x00004000 /* Surface is RLE encoded */ | |
| 146 #define SDL_SRCALPHA 0x00010000 /* Blit uses source alpha blending */ | |
| 147 #define SDL_PREALLOC 0x01000000 /* Surface uses preallocated memory */ | |
| 148 | |
| 149 /* Evaluates to true if the surface needs to be locked before access */ | |
| 150 #define SDL_MUSTLOCK(surface) \ | |
| 151 (surface->offset || \ | |
| 152 ((surface->flags & (SDL_HWSURFACE|SDL_ASYNCBLIT|SDL_RLEACCEL)) != 0)) | |
| 153 | |
| 154 | |
| 155 /* Useful for determining the video hardware capabilities */ | |
| 156 typedef struct { | |
| 157 Uint32 hw_available :1; /* Flag: Can you create hardware surfaces? */ | |
| 158 Uint32 wm_available :1; /* Flag: Can you talk to a window manager? */ | |
| 159 Uint32 UnusedBits1 :6; | |
| 160 Uint32 UnusedBits2 :1; | |
| 161 Uint32 blit_hw :1; /* Flag: Accelerated blits HW --> HW */ | |
| 162 Uint32 blit_hw_CC :1; /* Flag: Accelerated blits with Colorkey */ | |
| 163 Uint32 blit_hw_A :1; /* Flag: Accelerated blits with Alpha */ | |
| 164 Uint32 blit_sw :1; /* Flag: Accelerated blits SW --> HW */ | |
| 165 Uint32 blit_sw_CC :1; /* Flag: Accelerated blits with Colorkey */ | |
| 166 Uint32 blit_sw_A :1; /* Flag: Accelerated blits with Alpha */ | |
| 167 Uint32 blit_fill :1; /* Flag: Accelerated color fill */ | |
| 168 Uint32 UnusedBits3 :16; | |
| 169 Uint32 video_mem; /* The total amount of video memory (in K) */ | |
| 170 SDL_PixelFormat *vfmt; /* Value: The format of the video surface */ | |
| 171 } SDL_VideoInfo; | |
| 172 | |
| 173 | |
| 174 /* The most common video overlay formats. | |
| 175 For an explanation of these pixel formats, see: | |
| 176 http://www.webartz.com/fourcc/indexyuv.htm | |
| 177 | |
| 178 For information on the relationship between color spaces, see: | |
| 179 http://www.neuro.sfc.keio.ac.jp/~aly/polygon/info/color-space-faq.html | |
| 180 */ | |
| 181 #define SDL_YV12_OVERLAY 0x32315659 /* Planar mode: Y + V + U (3 planes) */ | |
| 182 #define SDL_IYUV_OVERLAY 0x56555949 /* Planar mode: Y + U + V (3 planes) */ | |
| 183 #define SDL_YUY2_OVERLAY 0x32595559 /* Packed mode: Y0+U0+Y1+V0 (1 plane) */ | |
| 184 #define SDL_UYVY_OVERLAY 0x59565955 /* Packed mode: U0+Y0+V0+Y1 (1 plane) */ | |
| 185 #define SDL_YVYU_OVERLAY 0x55595659 /* Packed mode: Y0+V0+Y1+U0 (1 plane) */ | |
| 186 | |
| 187 /* The YUV hardware video overlay */ | |
| 188 typedef struct SDL_Overlay { | |
| 189 Uint32 format; /* Read-only */ | |
| 190 int w, h; /* Read-only */ | |
| 191 int planes; /* Read-only */ | |
| 192 Uint16 *pitches; /* Read-only */ | |
| 193 Uint8 **pixels; /* Read-write */ | |
| 194 | |
| 195 /* Hardware-specific surface info */ | |
| 196 struct private_yuvhwfuncs *hwfuncs; | |
| 197 struct private_yuvhwdata *hwdata; | |
| 198 | |
| 199 /* Special flags */ | |
| 200 Uint32 hw_overlay :1; /* Flag: This overlay hardware accelerated? */ | |
| 201 Uint32 UnusedBits :31; | |
| 202 } SDL_Overlay; | |
| 203 | |
| 204 | |
| 205 /* Public enumeration for setting the OpenGL window attributes. */ | |
| 206 typedef enum { | |
| 207 SDL_GL_RED_SIZE, | |
| 208 SDL_GL_GREEN_SIZE, | |
| 209 SDL_GL_BLUE_SIZE, | |
| 210 SDL_GL_ALPHA_SIZE, | |
| 211 SDL_GL_BUFFER_SIZE, | |
| 212 SDL_GL_DOUBLEBUFFER, | |
| 213 SDL_GL_DEPTH_SIZE, | |
| 214 SDL_GL_STENCIL_SIZE, | |
| 215 SDL_GL_ACCUM_RED_SIZE, | |
| 216 SDL_GL_ACCUM_GREEN_SIZE, | |
| 217 SDL_GL_ACCUM_BLUE_SIZE, | |
| 218 SDL_GL_ACCUM_ALPHA_SIZE | |
| 219 } SDL_GLattr; | |
| 220 | |
| 221 /* flags for SDL_SetPalette() */ | |
| 222 #define SDL_LOGPAL 0x01 | |
| 223 #define SDL_PHYSPAL 0x02 | |
| 224 | |
| 225 /* Function prototypes */ | |
| 226 | |
| 227 /* These functions are used internally, and should not be used unless you | |
| 228 * have a specific need to specify the video driver you want to use. | |
| 229 * You should normally use SDL_Init() or SDL_InitSubSystem(). | |
| 230 * | |
| 231 * SDL_VideoInit() initializes the video subsystem -- sets up a connection | |
| 232 * to the window manager, etc, and determines the current video mode and | |
| 233 * pixel format, but does not initialize a window or graphics mode. | |
| 234 * Note that event handling is activated by this routine. | |
| 235 * | |
| 236 * If you use both sound and video in your application, you need to call | |
| 237 * SDL_Init() before opening the sound device, otherwise under Win32 DirectX, | |
| 238 * you won't be able to set full-screen display modes. | |
| 239 */ | |
| 240 extern DECLSPEC int SDL_VideoInit(const char *driver_name, Uint32 flags); | |
| 241 extern DECLSPEC void SDL_VideoQuit(void); | |
| 242 | |
| 243 /* This function fills the given character buffer with the name of the | |
| 244 * video driver, and returns a pointer to it if the video driver has | |
| 245 * been initialized. It returns NULL if no driver has been initialized. | |
| 246 */ | |
| 247 extern DECLSPEC char *SDL_VideoDriverName(char *namebuf, int maxlen); | |
| 248 | |
| 249 /* | |
| 250 * This function returns a pointer to the current display surface. | |
| 251 * If SDL is doing format conversion on the display surface, this | |
| 252 * function returns the publicly visible surface, not the real video | |
| 253 * surface. | |
| 254 */ | |
| 255 extern DECLSPEC SDL_Surface * SDL_GetVideoSurface(void); | |
| 256 | |
| 257 /* | |
| 258 * This function returns a read-only pointer to information about the | |
| 259 * video hardware. If this is called before SDL_SetVideoMode(), the 'vfmt' | |
| 260 * member of the returned structure will contain the pixel format of the | |
| 261 * "best" video mode. | |
| 262 */ | |
| 263 extern DECLSPEC const SDL_VideoInfo * SDL_GetVideoInfo(void); | |
| 264 | |
| 265 /* | |
| 266 * Check to see if a particular video mode is supported. | |
| 267 * It returns 0 if the requested mode is not supported under any bit depth, | |
| 268 * or returns the bits-per-pixel of the closest available mode with the | |
| 269 * given width and height. If this bits-per-pixel is different from the | |
| 270 * one used when setting the video mode, SDL_SetVideoMode() will succeed, | |
| 271 * but will emulate the requested bits-per-pixel with a shadow surface. | |
| 272 * | |
| 273 * The arguments to SDL_VideoModeOK() are the same ones you would pass to | |
| 274 * SDL_SetVideoMode() | |
| 275 */ | |
| 276 extern DECLSPEC int SDL_VideoModeOK(int width, int height, int bpp, Uint32 flags); | |
| 277 | |
| 278 /* | |
| 279 * Return a pointer to an array of available screen dimensions for the | |
| 280 * given format and video flags, sorted largest to smallest. Returns | |
| 281 * NULL if there are no dimensions available for a particular format, | |
| 282 * or (SDL_Rect **)-1 if any dimension is okay for the given format. | |
| 283 * | |
| 284 * If 'format' is NULL, the mode list will be for the format given | |
| 285 * by SDL_GetVideoInfo()->vfmt | |
| 286 */ | |
| 287 extern DECLSPEC SDL_Rect ** SDL_ListModes(SDL_PixelFormat *format, Uint32 flags); | |
| 288 | |
| 289 /* | |
| 290 * Set up a video mode with the specified width, height and bits-per-pixel. | |
| 291 * | |
| 292 * If 'bpp' is 0, it is treated as the current display bits per pixel. | |
| 293 * | |
| 294 * If SDL_ANYFORMAT is set in 'flags', the SDL library will try to set the | |
| 295 * requested bits-per-pixel, but will return whatever video pixel format is | |
| 296 * available. The default is to emulate the requested pixel format if it | |
| 297 * is not natively available. | |
| 298 * | |
| 299 * If SDL_HWSURFACE is set in 'flags', the video surface will be placed in | |
| 300 * video memory, if possible, and you may have to call SDL_LockSurface() | |
| 301 * in order to access the raw framebuffer. Otherwise, the video surface | |
| 302 * will be created in system memory. | |
| 303 * | |
| 304 * If SDL_ASYNCBLIT is set in 'flags', SDL will try to perform rectangle | |
| 305 * updates asynchronously, but you must always lock before accessing pixels. | |
| 306 * SDL will wait for updates to complete before returning from the lock. | |
| 307 * | |
| 308 * If SDL_HWPALETTE is set in 'flags', the SDL library will guarantee | |
| 309 * that the colors set by SDL_SetColors() will be the colors you get. | |
| 310 * Otherwise, in 8-bit mode, SDL_SetColors() may not be able to set all | |
| 311 * of the colors exactly the way they are requested, and you should look | |
| 312 * at the video surface structure to determine the actual palette. | |
| 313 * If SDL cannot guarantee that the colors you request can be set, | |
| 314 * i.e. if the colormap is shared, then the video surface may be created | |
| 315 * under emulation in system memory, overriding the SDL_HWSURFACE flag. | |
| 316 * | |
| 317 * If SDL_FULLSCREEN is set in 'flags', the SDL library will try to set | |
| 318 * a fullscreen video mode. The default is to create a windowed mode | |
| 319 * if the current graphics system has a window manager. | |
| 320 * If the SDL library is able to set a fullscreen video mode, this flag | |
| 321 * will be set in the surface that is returned. | |
| 322 * | |
| 323 * If SDL_DOUBLEBUF is set in 'flags', the SDL library will try to set up | |
| 324 * two surfaces in video memory and swap between them when you call | |
| 325 * SDL_Flip(). This is usually slower than the normal single-buffering | |
| 326 * scheme, but prevents "tearing" artifacts caused by modifying video | |
| 327 * memory while the monitor is refreshing. It should only be used by | |
| 328 * applications that redraw the entire screen on every update. | |
| 329 * | |
| 330 * If SDL_RESIZABLE is set in 'flags', the SDL library will allow the | |
| 331 * window manager, if any, to resize the window at runtime. When this | |
| 332 * occurs, SDL will send a SDL_VIDEORESIZE event to you application, | |
| 333 * and you must respond to the event by re-calling SDL_SetVideoMode() | |
| 334 * with the requested size (or another size that suits the application). | |
| 335 * | |
| 336 * If SDL_NOFRAME is set in 'flags', the SDL library will create a window | |
| 337 * without any title bar or frame decoration. Fullscreen video modes have | |
| 338 * this flag set automatically. | |
| 339 * | |
| 340 * This function returns the video framebuffer surface, or NULL if it fails. | |
| 341 * | |
| 342 * If you rely on functionality provided by certain video flags, check the | |
| 343 * flags of the returned surface to make sure that functionality is available. | |
| 344 * SDL will fall back to reduced functionality if the exact flags you wanted | |
| 345 * are not available. | |
| 346 */ | |
| 347 extern DECLSPEC SDL_Surface *SDL_SetVideoMode | |
| 348 (int width, int height, int bpp, Uint32 flags); | |
| 349 | |
| 350 /* | |
| 351 * Makes sure the given list of rectangles is updated on the given screen. | |
| 352 * If 'x', 'y', 'w' and 'h' are all 0, SDL_UpdateRect will update the entire | |
| 353 * screen. | |
| 354 * These functions should not be called while 'screen' is locked. | |
| 355 */ | |
| 356 extern DECLSPEC void SDL_UpdateRects | |
| 357 (SDL_Surface *screen, int numrects, SDL_Rect *rects); | |
| 358 extern DECLSPEC void SDL_UpdateRect | |
| 359 (SDL_Surface *screen, Sint32 x, Sint32 y, Uint32 w, Uint32 h); | |
| 360 | |
| 361 /* | |
| 362 * On hardware that supports double-buffering, this function sets up a flip | |
| 363 * and returns. The hardware will wait for vertical retrace, and then swap | |
| 364 * video buffers before the next video surface blit or lock will return. | |
| 365 * On hardware that doesn not support double-buffering, this is equivalent | |
| 366 * to calling SDL_UpdateRect(screen, 0, 0, 0, 0); | |
| 367 * The SDL_DOUBLEBUF flag must have been passed to SDL_SetVideoMode() when | |
| 368 * setting the video mode for this function to perform hardware flipping. | |
| 369 * This function returns 0 if successful, or -1 if there was an error. | |
| 370 */ | |
| 371 extern DECLSPEC int SDL_Flip(SDL_Surface *screen); | |
| 372 | |
| 373 /* | |
| 374 * Set the gamma correction for each of the color channels. | |
| 375 * The gamma values range (approximately) between 0.1 and 10.0 | |
| 376 * | |
| 377 * If this function isn't supported directly by the hardware, it will | |
| 378 * be emulated using gamma ramps, if available. If successful, this | |
| 379 * function returns 0, otherwise it returns -1. | |
| 380 */ | |
| 381 extern DECLSPEC int SDL_SetGamma(float red, float green, float blue); | |
| 382 | |
| 383 /* | |
| 384 * Set the gamma translation table for the red, green, and blue channels | |
| 385 * of the video hardware. Each table is an array of 256 16-bit quantities, | |
| 386 * representing a mapping between the input and output for that channel. | |
| 387 * The input is the index into the array, and the output is the 16-bit | |
| 388 * gamma value at that index, scaled to the output color precision. | |
| 389 * | |
| 390 * You may pass NULL for any of the channels to leave it unchanged. | |
| 391 * If the call succeeds, it will return 0. If the display driver or | |
| 392 * hardware does not support gamma translation, or otherwise fails, | |
| 393 * this function will return -1. | |
| 394 */ | |
| 395 extern DECLSPEC int SDL_SetGammaRamp(Uint16 *red, Uint16 *green, Uint16 *blue); | |
| 396 | |
| 397 /* | |
| 398 * Retrieve the current values of the gamma translation tables. | |
| 399 * | |
| 400 * You must pass in valid pointers to arrays of 256 16-bit quantities. | |
| 401 * Any of the pointers may be NULL to ignore that channel. | |
| 402 * If the call succeeds, it will return 0. If the display driver or | |
| 403 * hardware does not support gamma translation, or otherwise fails, | |
| 404 * this function will return -1. | |
| 405 */ | |
| 406 extern DECLSPEC int SDL_GetGammaRamp(Uint16 *red, Uint16 *green, Uint16 *blue); | |
| 407 | |
| 408 /* | |
| 409 * Sets a portion of the colormap for the given 8-bit surface. If 'surface' | |
| 410 * is not a palettized surface, this function does nothing, returning 0. | |
| 411 * If all of the colors were set as passed to SDL_SetColors(), it will | |
| 412 * return 1. If not all the color entries were set exactly as given, | |
| 413 * it will return 0, and you should look at the surface palette to | |
| 414 * determine the actual color palette. | |
| 415 * | |
| 416 * When 'surface' is the surface associated with the current display, the | |
| 417 * display colormap will be updated with the requested colors. If | |
| 418 * SDL_HWPALETTE was set in SDL_SetVideoMode() flags, SDL_SetColors() | |
| 419 * will always return 1, and the palette is guaranteed to be set the way | |
| 420 * you desire, even if the window colormap has to be warped or run under | |
| 421 * emulation. | |
| 422 */ | |
| 423 extern DECLSPEC int SDL_SetColors(SDL_Surface *surface, | |
| 424 SDL_Color *colors, int firstcolor, int ncolors); | |
| 425 | |
| 426 /* | |
| 427 * Sets a portion of the colormap for a given 8-bit surface. | |
| 428 * 'flags' is one or both of: | |
| 429 * SDL_LOGPAL -- set logical palette, which controls how blits are mapped | |
| 430 * to/from the surface, | |
| 431 * SDL_PHYSPAL -- set physical palette, which controls how pixels look on | |
| 432 * the screen | |
| 433 * Only screens have physical palettes. Separate change of physical/logical | |
| 434 * palettes is only possible if the screen has SDL_HWPALETTE set. | |
| 435 * | |
| 436 * The return value is 1 if all colours could be set as requested, and 0 | |
| 437 * otherwise. | |
| 438 * | |
| 439 * SDL_SetColors() is equivalent to calling this function with | |
| 440 * flags = (SDL_LOGPAL|SDL_PHYSPAL). | |
| 441 */ | |
| 442 extern DECLSPEC int SDL_SetPalette(SDL_Surface *surface, int flags, | |
| 443 SDL_Color *colors, int firstcolor, | |
| 444 int ncolors); | |
| 445 | |
| 446 /* | |
| 447 * Maps an RGB triple to an opaque pixel value for a given pixel format | |
| 448 */ | |
| 449 extern DECLSPEC Uint32 SDL_MapRGB | |
| 450 (SDL_PixelFormat *format, Uint8 r, Uint8 g, Uint8 b); | |
| 451 | |
| 452 /* | |
| 453 * Maps an RGBA quadruple to a pixel value for a given pixel format | |
| 454 */ | |
| 455 extern DECLSPEC Uint32 SDL_MapRGBA(SDL_PixelFormat *format, | |
| 456 Uint8 r, Uint8 g, Uint8 b, Uint8 a); | |
| 457 | |
| 458 /* | |
| 459 * Maps a pixel value into the RGB components for a given pixel format | |
| 460 */ | |
| 461 extern DECLSPEC void SDL_GetRGB(Uint32 pixel, SDL_PixelFormat *fmt, | |
| 462 Uint8 *r, Uint8 *g, Uint8 *b); | |
| 463 | |
| 464 /* | |
| 465 * Maps a pixel value into the RGBA components for a given pixel format | |
| 466 */ | |
| 467 extern DECLSPEC void SDL_GetRGBA(Uint32 pixel, SDL_PixelFormat *fmt, | |
| 468 Uint8 *r, Uint8 *g, Uint8 *b, Uint8 *a); | |
| 469 | |
| 470 /* | |
| 471 * Allocate and free an RGB surface (must be called after SDL_SetVideoMode) | |
| 472 * If the depth is 4 or 8 bits, an empty palette is allocated for the surface. | |
| 473 * If the depth is greater than 8 bits, the pixel format is set using the | |
| 474 * flags '[RGB]mask'. | |
| 475 * If the function runs out of memory, it will return NULL. | |
| 476 * | |
| 477 * The 'flags' tell what kind of surface to create. | |
| 478 * SDL_SWSURFACE means that the surface should be created in system memory. | |
| 479 * SDL_HWSURFACE means that the surface should be created in video memory, | |
| 480 * with the same format as the display surface. This is useful for surfaces | |
| 481 * that will not change much, to take advantage of hardware acceleration | |
| 482 * when being blitted to the display surface. | |
| 483 * SDL_ASYNCBLIT means that SDL will try to perform asynchronous blits with | |
| 484 * this surface, but you must always lock it before accessing the pixels. | |
| 485 * SDL will wait for current blits to finish before returning from the lock. | |
| 486 * SDL_SRCCOLORKEY indicates that the surface will be used for colorkey blits. | |
| 487 * If the hardware supports acceleration of colorkey blits between | |
| 488 * two surfaces in video memory, SDL will try to place the surface in | |
| 489 * video memory. If this isn't possible or if there is no hardware | |
| 490 * acceleration available, the surface will be placed in system memory. | |
| 491 * SDL_SRCALPHA means that the surface will be used for alpha blits and | |
| 492 * if the hardware supports hardware acceleration of alpha blits between | |
| 493 * two surfaces in video memory, to place the surface in video memory | |
| 494 * if possible, otherwise it will be placed in system memory. | |
| 495 * If the surface is created in video memory, blits will be _much_ faster, | |
| 496 * but the surface format must be identical to the video surface format, | |
| 497 * and the only way to access the pixels member of the surface is to use | |
| 498 * the SDL_LockSurface() and SDL_UnlockSurface() calls. | |
| 499 * If the requested surface actually resides in video memory, SDL_HWSURFACE | |
| 500 * will be set in the flags member of the returned surface. If for some | |
| 501 * reason the surface could not be placed in video memory, it will not have | |
| 502 * the SDL_HWSURFACE flag set, and will be created in system memory instead. | |
| 503 */ | |
| 504 #define SDL_AllocSurface SDL_CreateRGBSurface | |
| 505 extern DECLSPEC SDL_Surface *SDL_CreateRGBSurface | |
| 506 (Uint32 flags, int width, int height, int depth, | |
| 507 Uint32 Rmask, Uint32 Gmask, Uint32 Bmask, Uint32 Amask); | |
| 508 extern DECLSPEC SDL_Surface *SDL_CreateRGBSurfaceFrom(void *pixels, | |
| 509 int width, int height, int depth, int pitch, | |
| 510 Uint32 Rmask, Uint32 Gmask, Uint32 Bmask, Uint32 Amask); | |
| 511 extern DECLSPEC void SDL_FreeSurface(SDL_Surface *surface); | |
| 512 | |
| 513 /* | |
| 514 * SDL_LockSurface() sets up a surface for directly accessing the pixels. | |
| 515 * Between calls to SDL_LockSurface()/SDL_UnlockSurface(), you can write | |
| 516 * to and read from 'surface->pixels', using the pixel format stored in | |
| 517 * 'surface->format'. Once you are done accessing the surface, you should | |
| 518 * use SDL_UnlockSurface() to release it. | |
| 519 * | |
| 520 * Not all surfaces require locking. If SDL_MUSTLOCK(surface) evaluates | |
| 521 * to 0, then you can read and write to the surface at any time, and the | |
| 522 * pixel format of the surface will not change. In particular, if the | |
| 523 * SDL_HWSURFACE flag is not given when calling SDL_SetVideoMode(), you | |
| 524 * will not need to lock the display surface before accessing it. | |
| 525 * | |
| 526 * No operating system or library calls should be made between lock/unlock | |
| 527 * pairs, as critical system locks may be held during this time. | |
| 528 * | |
| 529 * SDL_LockSurface() returns 0, or -1 if the surface couldn't be locked. | |
| 530 */ | |
| 531 extern DECLSPEC int SDL_LockSurface(SDL_Surface *surface); | |
| 532 extern DECLSPEC void SDL_UnlockSurface(SDL_Surface *surface); | |
| 533 | |
| 534 /* | |
| 535 * Load a surface from a seekable SDL data source (memory or file.) | |
| 536 * If 'freesrc' is non-zero, the source will be closed after being read. | |
| 537 * Returns the new surface, or NULL if there was an error. | |
| 538 * The new surface should be freed with SDL_FreeSurface(). | |
| 539 */ | |
| 540 extern DECLSPEC SDL_Surface * SDL_LoadBMP_RW(SDL_RWops *src, int freesrc); | |
| 541 | |
| 542 /* Convenience macro -- load a surface from a file */ | |
| 543 #define SDL_LoadBMP(file) SDL_LoadBMP_RW(SDL_RWFromFile(file, "rb"), 1) | |
| 544 | |
| 545 /* | |
| 546 * Save a surface to a seekable SDL data source (memory or file.) | |
| 547 * If 'freedst' is non-zero, the source will be closed after being written. | |
| 548 * Returns 0 if successful or -1 if there was an error. | |
| 549 */ | |
| 550 extern DECLSPEC int SDL_SaveBMP_RW | |
| 551 (SDL_Surface *surface, SDL_RWops *dst, int freedst); | |
| 552 | |
| 553 /* Convenience macro -- save a surface to a file */ | |
| 554 #define SDL_SaveBMP(surface, file) \ | |
| 555 SDL_SaveBMP_RW(surface, SDL_RWFromFile(file, "wb"), 1) | |
| 556 | |
| 557 /* | |
| 558 * Sets the color key (transparent pixel) in a blittable surface. | |
| 559 * If 'flag' is SDL_SRCCOLORKEY (optionally OR'd with SDL_RLEACCEL), | |
| 560 * 'key' will be the transparent pixel in the source image of a blit. | |
| 561 * SDL_RLEACCEL requests RLE acceleration for the surface if present, | |
| 562 * and removes RLE acceleration if absent. | |
| 563 * If 'flag' is 0, this function clears any current color key. | |
| 564 * This function returns 0, or -1 if there was an error. | |
| 565 */ | |
| 566 extern DECLSPEC int SDL_SetColorKey | |
| 567 (SDL_Surface *surface, Uint32 flag, Uint32 key); | |
| 568 | |
| 569 /* | |
| 570 * This function sets the alpha value for the entire surface, as opposed to | |
| 571 * using the alpha component of each pixel. This value measures the range | |
| 572 * of transparency of the surface, 0 being completely transparent to 255 | |
| 573 * being completely opaque. An 'alpha' value of 255 causes blits to be | |
| 574 * opaque, the source pixels copied to the destination (the default). Note | |
| 575 * that per-surface alpha can be combined with colorkey transparency. | |
| 576 * | |
| 577 * If 'flag' is 0, alpha blending is disabled for the surface. | |
| 578 * If 'flag' is SDL_SRCALPHA, alpha blending is enabled for the surface. | |
| 579 * OR:ing the flag with SDL_RLEACCEL requests RLE acceleration for the | |
| 580 * surface; if SDL_RLEACCEL is not specified, the RLE accel will be removed. | |
| 581 */ | |
| 582 extern DECLSPEC int SDL_SetAlpha(SDL_Surface *surface, Uint32 flag, Uint8 alpha); | |
| 583 | |
| 584 /* | |
| 585 * Sets the clipping rectangle for the destination surface in a blit. | |
| 586 * | |
| 587 * If the clip rectangle is NULL, clipping will be disabled. | |
| 588 * If the clip rectangle doesn't intersect the surface, the function will | |
| 589 * return SDL_FALSE and blits will be completely clipped. Otherwise the | |
| 590 * function returns SDL_TRUE and blits to the surface will be clipped to | |
| 591 * the intersection of the surface area and the clipping rectangle. | |
| 592 * | |
| 593 * Note that blits are automatically clipped to the edges of the source | |
| 594 * and destination surfaces. | |
| 595 */ | |
|
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|
596 extern DECLSPEC SDL_bool SDL_SetClipRect(SDL_Surface *surface, const SDL_Rect *rect); |
| 0 | 597 |
| 598 /* | |
| 599 * Gets the clipping rectangle for the destination surface in a blit. | |
| 600 * 'rect' must be a pointer to a valid rectangle which will be filled | |
| 601 * with the correct values. | |
| 602 */ | |
| 603 extern DECLSPEC void SDL_GetClipRect(SDL_Surface *surface, SDL_Rect *rect); | |
| 604 | |
| 605 /* | |
| 606 * Creates a new surface of the specified format, and then copies and maps | |
| 607 * the given surface to it so the blit of the converted surface will be as | |
| 608 * fast as possible. If this function fails, it returns NULL. | |
| 609 * | |
| 610 * The 'flags' parameter is passed to SDL_CreateRGBSurface() and has those | |
| 611 * semantics. You can also pass SDL_RLEACCEL in the flags parameter and | |
| 612 * SDL will try to RLE accelerate colorkey and alpha blits in the resulting | |
| 613 * surface. | |
| 614 * | |
| 615 * This function is used internally by SDL_DisplayFormat(). | |
| 616 */ | |
| 617 extern DECLSPEC SDL_Surface *SDL_ConvertSurface | |
| 618 (SDL_Surface *src, SDL_PixelFormat *fmt, Uint32 flags); | |
| 619 | |
| 620 /* | |
| 621 * This performs a fast blit from the source surface to the destination | |
| 622 * surface. It assumes that the source and destination rectangles are | |
| 623 * the same size. If either 'srcrect' or 'dstrect' are NULL, the entire | |
| 624 * surface (src or dst) is copied. The final blit rectangles are saved | |
| 625 * in 'srcrect' and 'dstrect' after all clipping is performed. | |
| 626 * If the blit is successful, it returns 0, otherwise it returns -1. | |
| 627 * | |
| 628 * The blit function should not be called on a locked surface. | |
| 629 * | |
| 630 * The blit semantics for surfaces with and without alpha and colorkey | |
| 631 * are defined as follows: | |
| 632 * | |
| 633 * RGBA->RGB: | |
| 634 * SDL_SRCALPHA set: | |
| 635 * alpha-blend (using alpha-channel). | |
| 636 * SDL_SRCCOLORKEY ignored. | |
| 637 * SDL_SRCALPHA not set: | |
| 638 * copy RGB. | |
| 639 * if SDL_SRCCOLORKEY set, only copy the pixels matching the | |
| 640 * RGB values of the source colour key, ignoring alpha in the | |
| 641 * comparison. | |
| 642 * | |
| 643 * RGB->RGBA: | |
| 644 * SDL_SRCALPHA set: | |
| 645 * alpha-blend (using the source per-surface alpha value); | |
| 646 * set destination alpha to opaque. | |
| 647 * SDL_SRCALPHA not set: | |
| 648 * copy RGB, set destination alpha to opaque. | |
| 649 * both: | |
| 650 * if SDL_SRCCOLORKEY set, only copy the pixels matching the | |
| 651 * source colour key. | |
| 652 * | |
| 653 * RGBA->RGBA: | |
| 654 * SDL_SRCALPHA set: | |
| 655 * alpha-blend (using the source alpha channel) the RGB values; | |
| 656 * leave destination alpha untouched. [Note: is this correct?] | |
| 657 * SDL_SRCCOLORKEY ignored. | |
| 658 * SDL_SRCALPHA not set: | |
| 659 * copy all of RGBA to the destination. | |
| 660 * if SDL_SRCCOLORKEY set, only copy the pixels matching the | |
| 661 * RGB values of the source colour key, ignoring alpha in the | |
| 662 * comparison. | |
| 663 * | |
| 664 * RGB->RGB: | |
| 665 * SDL_SRCALPHA set: | |
| 666 * alpha-blend (using the source per-surface alpha value). | |
| 667 * SDL_SRCALPHA not set: | |
| 668 * copy RGB. | |
| 669 * both: | |
| 670 * if SDL_SRCCOLORKEY set, only copy the pixels matching the | |
| 671 * source colour key. | |
| 672 * | |
| 673 * If either of the surfaces were in video memory, and the blit returns -2, | |
| 674 * the video memory was lost, so it should be reloaded with artwork and | |
| 675 * re-blitted: | |
| 676 while ( SDL_BlitSurface(image, imgrect, screen, dstrect) == -2 ) { | |
| 677 while ( SDL_LockSurface(image) < 0 ) | |
| 678 Sleep(10); | |
| 679 -- Write image pixels to image->pixels -- | |
| 680 SDL_UnlockSurface(image); | |
| 681 } | |
| 682 * This happens under DirectX 5.0 when the system switches away from your | |
| 683 * fullscreen application. The lock will also fail until you have access | |
| 684 * to the video memory again. | |
| 685 */ | |
| 686 /* You should call SDL_BlitSurface() unless you know exactly how SDL | |
| 687 blitting works internally and how to use the other blit functions. | |
| 688 */ | |
| 689 #define SDL_BlitSurface SDL_UpperBlit | |
| 690 | |
| 691 /* This is the public blit function, SDL_BlitSurface(), and it performs | |
| 692 rectangle validation and clipping before passing it to SDL_LowerBlit() | |
| 693 */ | |
| 694 extern DECLSPEC int SDL_UpperBlit | |
| 695 (SDL_Surface *src, SDL_Rect *srcrect, | |
| 696 SDL_Surface *dst, SDL_Rect *dstrect); | |
| 697 /* This is a semi-private blit function and it performs low-level surface | |
| 698 blitting only. | |
| 699 */ | |
| 700 extern DECLSPEC int SDL_LowerBlit | |
| 701 (SDL_Surface *src, SDL_Rect *srcrect, | |
| 702 SDL_Surface *dst, SDL_Rect *dstrect); | |
| 703 | |
| 704 /* | |
| 705 * This function performs a fast fill of the given rectangle with 'color' | |
| 706 * The given rectangle is clipped to the destination surface clip area | |
| 707 * and the final fill rectangle is saved in the passed in pointer. | |
| 708 * If 'dstrect' is NULL, the whole surface will be filled with 'color' | |
| 709 * The color should be a pixel of the format used by the surface, and | |
| 710 * can be generated by the SDL_MapRGB() function. | |
| 711 * This function returns 0 on success, or -1 on error. | |
| 712 */ | |
| 713 extern DECLSPEC int SDL_FillRect | |
| 714 (SDL_Surface *dst, SDL_Rect *dstrect, Uint32 color); | |
| 715 | |
| 716 /* | |
| 717 * This function takes a surface and copies it to a new surface of the | |
| 718 * pixel format and colors of the video framebuffer, suitable for fast | |
| 719 * blitting onto the display surface. It calls SDL_ConvertSurface() | |
| 720 * | |
| 721 * If you want to take advantage of hardware colorkey or alpha blit | |
| 722 * acceleration, you should set the colorkey and alpha value before | |
| 723 * calling this function. | |
| 724 * | |
| 725 * If the conversion fails or runs out of memory, it returns NULL | |
| 726 */ | |
| 727 extern DECLSPEC SDL_Surface * SDL_DisplayFormat(SDL_Surface *surface); | |
| 728 | |
| 729 /* | |
| 730 * This function takes a surface and copies it to a new surface of the | |
| 731 * pixel format and colors of the video framebuffer (if possible), | |
| 732 * suitable for fast alpha blitting onto the display surface. | |
| 733 * The new surface will always have an alpha channel. | |
| 734 * | |
| 735 * If you want to take advantage of hardware colorkey or alpha blit | |
| 736 * acceleration, you should set the colorkey and alpha value before | |
| 737 * calling this function. | |
| 738 * | |
| 739 * If the conversion fails or runs out of memory, it returns NULL | |
| 740 */ | |
| 741 extern DECLSPEC SDL_Surface * SDL_DisplayFormatAlpha(SDL_Surface *surface); | |
| 742 | |
| 743 | |
| 744 /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */ | |
| 745 /* YUV video surface overlay functions */ | |
| 746 /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */ | |
| 747 | |
| 748 /* This function creates a video output overlay | |
| 749 Calling the returned surface an overlay is something of a misnomer because | |
| 750 the contents of the display surface underneath the area where the overlay | |
| 751 is shown is undefined - it may be overwritten with the converted YUV data. | |
| 752 */ | |
| 753 extern DECLSPEC SDL_Overlay *SDL_CreateYUVOverlay(int width, int height, | |
| 754 Uint32 format, SDL_Surface *display); | |
| 755 | |
| 756 /* Lock an overlay for direct access, and unlock it when you are done */ | |
| 757 extern DECLSPEC int SDL_LockYUVOverlay(SDL_Overlay *overlay); | |
| 758 extern DECLSPEC void SDL_UnlockYUVOverlay(SDL_Overlay *overlay); | |
| 759 | |
| 760 /* Blit a video overlay to the display surface. | |
| 761 The contents of the video surface underneath the blit destination are | |
| 762 not defined. | |
| 763 The width and height of the destination rectangle may be different from | |
| 764 that of the overlay, but currently only 2x scaling is supported. | |
| 765 */ | |
| 766 extern DECLSPEC int SDL_DisplayYUVOverlay(SDL_Overlay *overlay, SDL_Rect *dstrect); | |
| 767 | |
| 768 /* Free a video overlay */ | |
| 769 extern DECLSPEC void SDL_FreeYUVOverlay(SDL_Overlay *overlay); | |
| 770 | |
| 771 | |
| 772 /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */ | |
| 773 /* OpenGL support functions. */ | |
| 774 /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */ | |
| 775 | |
| 776 /* | |
| 777 * Dynamically load a GL driver, if SDL is built with dynamic GL. | |
| 778 * | |
| 779 * SDL links normally with the OpenGL library on your system by default, | |
| 780 * but you can compile it to dynamically load the GL driver at runtime. | |
| 781 * If you do this, you need to retrieve all of the GL functions used in | |
| 782 * your program from the dynamic library using SDL_GL_GetProcAddress(). | |
| 783 * | |
| 784 * This is disabled in default builds of SDL. | |
| 785 */ | |
| 786 extern DECLSPEC int SDL_GL_LoadLibrary(const char *path); | |
| 787 | |
| 788 /* | |
| 789 * Get the address of a GL function (for extension functions) | |
| 790 */ | |
| 791 extern DECLSPEC void *SDL_GL_GetProcAddress(const char* proc); | |
| 792 | |
| 793 /* | |
| 794 * Set an attribute of the OpenGL subsystem before intialization. | |
| 795 */ | |
| 796 extern DECLSPEC int SDL_GL_SetAttribute(SDL_GLattr attr, int value); | |
| 797 | |
| 798 /* | |
| 799 * Get an attribute of the OpenGL subsystem from the windowing | |
| 800 * interface, such as glX. This is of course different from getting | |
| 801 * the values from SDL's internal OpenGL subsystem, which only | |
| 802 * stores the values you request before initialization. | |
| 803 * | |
| 804 * Developers should track the values they pass into SDL_GL_SetAttribute | |
| 805 * themselves if they want to retrieve these values. | |
| 806 */ | |
| 807 extern DECLSPEC int SDL_GL_GetAttribute(SDL_GLattr attr, int* value); | |
| 808 | |
| 809 /* | |
| 810 * Swap the OpenGL buffers, if double-buffering is supported. | |
| 811 */ | |
| 812 extern DECLSPEC void SDL_GL_SwapBuffers(void); | |
| 813 | |
| 814 /* | |
| 815 * Internal functions that should not be called unless you have read | |
| 816 * and understood the source code for these functions. | |
| 817 */ | |
| 818 extern DECLSPEC void SDL_GL_UpdateRects(int numrects, SDL_Rect* rects); | |
| 819 extern DECLSPEC void SDL_GL_Lock(void); | |
| 820 extern DECLSPEC void SDL_GL_Unlock(void); | |
| 821 | |
| 822 /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */ | |
| 823 /* These functions allow interaction with the window manager, if any. */ | |
| 824 /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */ | |
| 825 | |
| 826 /* | |
| 827 * Sets/Gets the title and icon text of the display window | |
| 828 */ | |
| 829 extern DECLSPEC void SDL_WM_SetCaption(const char *title, const char *icon); | |
| 830 extern DECLSPEC void SDL_WM_GetCaption(char **title, char **icon); | |
| 831 | |
| 832 /* | |
| 833 * Sets the icon for the display window. | |
| 834 * This function must be called before the first call to SDL_SetVideoMode(). | |
| 835 * It takes an icon surface, and a mask in MSB format. | |
| 836 * If 'mask' is NULL, the entire icon surface will be used as the icon. | |
| 837 */ | |
| 838 extern DECLSPEC void SDL_WM_SetIcon(SDL_Surface *icon, Uint8 *mask); | |
| 839 | |
| 840 /* | |
| 841 * This function iconifies the window, and returns 1 if it succeeded. | |
| 842 * If the function succeeds, it generates an SDL_APPACTIVE loss event. | |
| 843 * This function is a noop and returns 0 in non-windowed environments. | |
| 844 */ | |
| 845 extern DECLSPEC int SDL_WM_IconifyWindow(void); | |
| 846 | |
| 847 /* | |
| 848 * Toggle fullscreen mode without changing the contents of the screen. | |
| 849 * If the display surface does not require locking before accessing | |
| 850 * the pixel information, then the memory pointers will not change. | |
| 851 * | |
| 852 * If this function was able to toggle fullscreen mode (change from | |
| 853 * running in a window to fullscreen, or vice-versa), it will return 1. | |
| 854 * If it is not implemented, or fails, it returns 0. | |
| 855 * | |
| 856 * The next call to SDL_SetVideoMode() will set the mode fullscreen | |
| 857 * attribute based on the flags parameter - if SDL_FULLSCREEN is not | |
| 858 * set, then the display will be windowed by default where supported. | |
| 859 * | |
| 860 * This is currently only implemented in the X11 video driver. | |
| 861 */ | |
| 862 extern DECLSPEC int SDL_WM_ToggleFullScreen(SDL_Surface *surface); | |
| 863 | |
| 864 /* | |
| 865 * This function allows you to set and query the input grab state of | |
| 866 * the application. It returns the new input grab state. | |
| 867 */ | |
| 868 typedef enum { | |
| 869 SDL_GRAB_QUERY = -1, | |
| 870 SDL_GRAB_OFF = 0, | |
| 871 SDL_GRAB_ON = 1, | |
| 872 SDL_GRAB_FULLSCREEN /* Used internally */ | |
| 873 } SDL_GrabMode; | |
| 874 /* | |
| 875 * Grabbing means that the mouse is confined to the application window, | |
| 876 * and nearly all keyboard input is passed directly to the application, | |
| 877 * and not interpreted by a window manager, if any. | |
| 878 */ | |
| 879 extern DECLSPEC SDL_GrabMode SDL_WM_GrabInput(SDL_GrabMode mode); | |
| 880 | |
|
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881 /* Not in public API at the moment - do not use! */ |
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882 extern DECLSPEC int SDL_SoftStretch(SDL_Surface *src, SDL_Rect *srcrect, |
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883 SDL_Surface *dst, SDL_Rect *dstrect); |
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884 |
| 0 | 885 /* Ends C function definitions when using C++ */ |
| 886 #ifdef __cplusplus | |
| 887 } | |
| 888 #endif | |
| 889 #include "close_code.h" | |
| 890 | |
| 891 #endif /* _SDL_video_h */ |