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comparison src/video/SDL_sysvideo.h @ 0:74212992fb08

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Initial revision
author Sam Lantinga <slouken@lokigames.com>
date Thu, 26 Apr 2001 16:45:43 +0000
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children cf2af46e9e2a
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1 /*
2 SDL - Simple DirectMedia Layer
3 Copyright (C) 1997, 1998, 1999, 2000, 2001 Sam Lantinga
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
20 slouken@devolution.com
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
45 #include <windows.h>
46 #endif
47
48 #ifdef HAVE_OPENGL
49 #ifdef MACOSX
50 #include <OpenGL/gl.h> /* OpenGL.framework */
51 #else
52 #include <GL/gl.h>
53 #endif /* MACOSX */
54 #endif /* HAVE_OPENGL */
55
56 /* The SDL video driver */
57 typedef struct SDL_VideoDevice SDL_VideoDevice;
58
59 /* Define the SDL video driver structure */
60 #define _THIS SDL_VideoDevice *_this
61 #ifndef _STATUS
62 #define _STATUS SDL_status *status
63 #endif
64 struct SDL_VideoDevice {
65 /* * * */
66 /* The name of this audio driver */
67 const char *name;
68
69 /* * * */
70 /* Initialization/Query functions */
71
72 /* Initialize the native video subsystem, filling 'vformat' with the
73 "best" display pixel format, returning 0 or -1 if there's an error.
74 */
75 int (*VideoInit)(_THIS, SDL_PixelFormat *vformat);
76
77 /* List the available video modes for the given pixel format, sorted
78 from largest to smallest.
79 */
80 SDL_Rect **(*ListModes)(_THIS, SDL_PixelFormat *format, Uint32 flags);
81
82 /* Set the requested video mode, returning a surface which will be
83 set to the SDL_VideoSurface. The width and height will already
84 be verified by ListModes(), and the video subsystem is free to
85 set the mode to a supported bit depth different from the one
86 specified -- the desired bpp will be emulated with a shadow
87 surface if necessary. If a new mode is returned, this function
88 should take care of cleaning up the current mode.
89 */
90 SDL_Surface *(*SetVideoMode)(_THIS, SDL_Surface *current,
91 int width, int height, int bpp, Uint32 flags);
92
93 /* Toggle the fullscreen mode */
94 int (*ToggleFullScreen)(_THIS, int on);
95
96 /* This is called after the video mode has been set, to get the
97 initial mouse state. It should queue events as necessary to
98 properly represent the current mouse focus and position.
99 */
100 void (*UpdateMouse)(_THIS);
101
102 /* Create a YUV video surface (possibly overlay) of the given
103 format. The hardware should be able to perform at least 2x
104 scaling on display.
105 */
106 SDL_Overlay *(*CreateYUVOverlay)(_THIS, int width, int height,
107 Uint32 format, SDL_Surface *display);
108
109 /* Sets the color entries { firstcolor .. (firstcolor+ncolors-1) }
110 of the physical palette to those in 'colors'. If the device is
111 using a software palette (SDL_HWPALETTE not set), then the
112 changes are reflected in the logical palette of the screen
113 as well.
114 The return value is 1 if all entries could be set properly
115 or 0 otherwise.
116 */
117 int (*SetColors)(_THIS, int firstcolor, int ncolors,
118 SDL_Color *colors);
119
120 /* This pointer should exist in the native video subsystem and should
121 point to an appropriate update function for the current video mode
122 */
123 void (*UpdateRects)(_THIS, int numrects, SDL_Rect *rects);
124
125 /* Reverse the effects VideoInit() -- called if VideoInit() fails
126 or if the application is shutting down the video subsystem.
127 */
128 void (*VideoQuit)(_THIS);
129
130 /* * * */
131 /* Hardware acceleration functions */
132
133 /* Information about the video hardware */
134 SDL_VideoInfo info;
135
136 /* Allocates a surface in video memory */
137 int (*AllocHWSurface)(_THIS, SDL_Surface *surface);
138
139 /* Sets the hardware accelerated blit function, if any, based
140 on the current flags of the surface (colorkey, alpha, etc.)
141 */
142 int (*CheckHWBlit)(_THIS, SDL_Surface *src, SDL_Surface *dst);
143
144 /* Fills a surface rectangle with the given color */
145 int (*FillHWRect)(_THIS, SDL_Surface *dst, SDL_Rect *rect, Uint32 color);
146
147 /* Sets video mem colorkey and accelerated blit function */
148 int (*SetHWColorKey)(_THIS, SDL_Surface *surface, Uint32 key);
149
150 /* Sets per surface hardware alpha value */
151 int (*SetHWAlpha)(_THIS, SDL_Surface *surface, Uint8 value);
152
153 /* Returns a readable/writable surface */
154 int (*LockHWSurface)(_THIS, SDL_Surface *surface);
155 void (*UnlockHWSurface)(_THIS, SDL_Surface *surface);
156
157 /* Performs hardware flipping */
158 int (*FlipHWSurface)(_THIS, SDL_Surface *surface);
159
160 /* Frees a previously allocated video surface */
161 void (*FreeHWSurface)(_THIS, SDL_Surface *surface);
162
163 /* * * */
164 /* Gamma support */
165
166 Uint16 *gamma;
167
168 /* Set the gamma correction directly (emulated with gamma ramps) */
169 int (*SetGamma)(_THIS, float red, float green, float blue);
170
171 /* Get the gamma correction directly (emulated with gamma ramps) */
172 int (*GetGamma)(_THIS, float *red, float *green, float *blue);
173
174 /* Set the gamma ramp */
175 int (*SetGammaRamp)(_THIS, Uint16 *ramp);
176
177 /* Get the gamma ramp */
178 int (*GetGammaRamp)(_THIS, Uint16 *ramp);
179
180 /* * * */
181 /* OpenGL support */
182
183 /* Sets the dll to use for OpenGL and loads it */
184 int (*GL_LoadLibrary)(_THIS, const char *path);
185
186 /* Retrieves the address of a function in the gl library */
187 void* (*GL_GetProcAddress)(_THIS, const char *proc);
188
189 /* Get attribute information from the windowing system. */
190 int (*GL_GetAttribute)(_THIS, SDL_GLattr attrib, int* value);
191
192 /* Make the context associated with this driver current */
193 int (*GL_MakeCurrent)(_THIS);
194
195 /* Swap the current buffers in double buffer mode. */
196 void (*GL_SwapBuffers)(_THIS);
197
198 /* OpenGL functions for SDL_OPENGLBLIT */
199 #ifdef HAVE_OPENGL
200 #ifndef WIN32
201 #define WINAPI
202 #endif
203 #define SDL_PROC(ret,func,params) ret (WINAPI *func) params;
204 #include "SDL_glfuncs.h"
205 #undef SDL_PROC
206
207 /* Texture id */
208 GLuint texture;
209 #endif
210 int is_32bit;
211
212 /* * * */
213 /* Window manager functions */
214
215 /* Set the title and icon text */
216 void (*SetCaption)(_THIS, const char *title, const char *icon);
217
218 /* Set the window icon image */
219 void (*SetIcon)(_THIS, SDL_Surface *icon, Uint8 *mask);
220
221 /* Iconify the window.
222 This function returns 1 if there is a window manager and the
223 window was actually iconified, it returns 0 otherwise.
224 */
225 int (*IconifyWindow)(_THIS);
226
227 /* Grab or ungrab keyboard and mouse input */
228 SDL_GrabMode (*GrabInput)(_THIS, SDL_GrabMode mode);
229
230 /* Get some platform dependent window information */
231 int (*GetWMInfo)(_THIS, SDL_SysWMinfo *info);
232
233 /* * * */
234 /* Cursor manager functions */
235
236 /* Free a window manager cursor
237 This function can be NULL if CreateWMCursor is also NULL.
238 */
239 void (*FreeWMCursor)(_THIS, WMcursor *cursor);
240
241 /* If not NULL, create a black/white window manager cursor */
242 WMcursor *(*CreateWMCursor)(_THIS,
243 Uint8 *data, Uint8 *mask, int w, int h, int hot_x, int hot_y);
244
245 /* Show the specified cursor, or hide if cursor is NULL */
246 int (*ShowWMCursor)(_THIS, WMcursor *cursor);
247
248 /* Warp the window manager cursor to (x,y)
249 If NULL, a mouse motion event is posted internally.
250 */
251 void (*WarpWMCursor)(_THIS, Uint16 x, Uint16 y);
252
253 /* If not NULL, this is called when a mouse motion event occurs */
254 void (*MoveWMCursor)(_THIS, int x, int y);
255
256 /* Determine whether the mouse should be in relative mode or not.
257 This function is called when the input grab state or cursor
258 visibility state changes.
259 If the cursor is not visible, and the input is grabbed, the
260 driver can place the mouse in relative mode, which may result
261 in higher accuracy sampling of the pointer motion.
262 */
263 void (*CheckMouseMode)(_THIS);
264
265 /* * * */
266 /* Event manager functions */
267
268 /* Initialize keyboard mapping for this driver */
269 void (*InitOSKeymap)(_THIS);
270
271 /* Handle any queued OS events */
272 void (*PumpEvents)(_THIS);
273
274 /* * * */
275 /* Data common to all drivers */
276 SDL_Surface *screen;
277 SDL_Surface *shadow;
278 SDL_Surface *visible;
279 SDL_Palette *physpal; /* physical palette, if != logical palette */
280 SDL_Color *gammacols; /* gamma-corrected colours, or NULL */
281 char *wm_title;
282 char *wm_icon;
283 int offset_x;
284 int offset_y;
285 SDL_GrabMode input_grab;
286
287 /* Driver information flags */
288 int handles_any_size; /* Driver handles any size video mode */
289
290 /* * * */
291 /* Data used by the GL drivers */
292 struct {
293 int red_size;
294 int green_size;
295 int blue_size;
296 int alpha_size;
297 int depth_size;
298 int buffer_size;
299 int stencil_size;
300 int double_buffer;
301 int accum_red_size;
302 int accum_green_size;
303 int accum_blue_size;
304 int accum_alpha_size;
305 int driver_loaded;
306 char driver_path[256];
307 void* dll_handle;
308 } gl_config;
309
310 /* * * */
311 /* Data private to this driver */
312 struct SDL_PrivateVideoData *hidden;
313 struct SDL_PrivateGLData *gl_data;
314
315 /* * * */
316 /* The function used to dispose of this structure */
317 void (*free)(_THIS);
318 };
319 #undef _THIS
320
321 typedef struct VideoBootStrap {
322 const char *name;
323 const char *desc;
324 int (*available)(void);
325 SDL_VideoDevice *(*create)(int devindex);
326 } VideoBootStrap;
327
328 #ifdef ENABLE_X11
329 extern VideoBootStrap X11_bootstrap;
330 #endif
331 #ifdef ENABLE_DGA
332 extern VideoBootStrap DGA_bootstrap;
333 #endif
334 #ifdef ENABLE_FBCON
335 extern VideoBootStrap FBCON_bootstrap;
336 #endif
337 #ifdef ENABLE_PS2GS
338 extern VideoBootStrap PS2GS_bootstrap;
339 #endif
340 #ifdef ENABLE_GGI
341 extern VideoBootStrap GGI_bootstrap;
342 #endif
343 #ifdef ENABLE_SVGALIB
344 extern VideoBootStrap SVGALIB_bootstrap;
345 #endif
346 #ifdef ENABLE_AALIB
347 extern VideoBootStrap AALIB_bootstrap;
348 #endif
349 #ifdef ENABLE_WINDIB
350 extern VideoBootStrap WINDIB_bootstrap;
351 #endif
352 #ifdef ENABLE_DIRECTX
353 extern VideoBootStrap DIRECTX_bootstrap;
354 #endif
355 #ifdef ENABLE_BWINDOW
356 extern VideoBootStrap BWINDOW_bootstrap;
357 #endif
358 /* MacOS X gets the proper defines from configure */
359 #if defined(macintosh) && !defined(MACOSX)
360 #define ENABLE_TOOLBOX
361 #if !TARGET_API_MAC_CARBON
362 #define ENABLE_DRAWSPROCKET
363 #endif
364 #endif
365 #ifdef ENABLE_TOOLBOX
366 extern VideoBootStrap TOOLBOX_bootstrap;
367 #endif
368 #ifdef ENABLE_DRAWSPROCKET
369 extern VideoBootStrap DSp_bootstrap;
370 #endif
371 #ifdef ENABLE_CYBERGRAPHICS
372 extern VideoBootStrap CGX_bootstrap;
373 #endif
374
375 /* This is the current video device */
376 extern SDL_VideoDevice *current_video;
377
378 #define SDL_VideoSurface (current_video->screen)
379 #define SDL_ShadowSurface (current_video->shadow)
380 #define SDL_PublicSurface (current_video->visible)
381
382 #endif /* _SDL_sysvideo_h */