e14743d1 |
1 | /* |
2 | SDL - Simple DirectMedia Layer |
3 | Copyright (C) 1997-2009 Sam Lantinga |
4 | |
5 | This library is free software; you can redistribute it and/or |
6 | modify it under the terms of the GNU Lesser General Public |
7 | License as published by the Free Software Foundation; either |
8 | version 2.1 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 | Lesser General Public License for more details. |
14 | |
15 | You should have received a copy of the GNU Lesser General Public |
16 | License along with this library; if not, write to the Free Software |
17 | Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
18 | |
19 | Sam Lantinga |
20 | slouken@libsdl.org |
21 | */ |
22 | #include "SDL_config.h" |
23 | |
24 | #ifndef _SDL_dgavideo_h |
25 | #define _SDL_dgavideo_h |
26 | |
27 | #include <X11/Xlib.h> |
28 | |
29 | /* Apparently some X11 systems can't include this multiple times... */ |
30 | #ifndef SDL_INCLUDED_XLIBINT_H |
31 | #define SDL_INCLUDED_XLIBINT_H 1 |
32 | #include <X11/Xlibint.h> |
33 | #endif |
34 | |
35 | #include <X11/Xproto.h> |
36 | |
37 | #include "SDL_mouse.h" |
38 | #include "SDL_mutex.h" |
39 | #include "../SDL_sysvideo.h" |
40 | |
41 | /* Hidden "this" pointer for the video functions */ |
42 | #define _THIS SDL_VideoDevice *this |
43 | |
44 | /* Define this if you need the DGA driver to be thread-safe */ |
45 | #define LOCK_DGA_DISPLAY |
46 | #ifdef LOCK_DGA_DISPLAY |
47 | #define LOCK_DISPLAY() SDL_mutexP(event_lock) |
48 | #define UNLOCK_DISPLAY() SDL_mutexV(event_lock) |
49 | #else |
50 | #define LOCK_DISPLAY() |
51 | #define UNLOCK_DISPLAY() |
52 | #endif |
53 | |
54 | |
55 | /* This is the structure we use to keep track of video memory */ |
56 | typedef struct vidmem_bucket { |
57 | struct vidmem_bucket *prev; |
58 | int used; |
59 | int dirty; |
60 | Uint8 *base; |
61 | unsigned int size; |
62 | struct vidmem_bucket *next; |
63 | } vidmem_bucket; |
64 | |
65 | /* Private display data */ |
66 | struct SDL_PrivateVideoData { |
67 | Display *DGA_Display; |
68 | Colormap DGA_colormap; |
69 | int visualClass; |
70 | |
71 | #define NUM_MODELISTS 4 /* 8, 16, 24, and 32 bits-per-pixel */ |
72 | int SDL_nummodes[NUM_MODELISTS]; |
73 | SDL_Rect **SDL_modelist[NUM_MODELISTS]; |
74 | |
75 | /* Information for the video surface */ |
76 | Uint8 *memory_base; |
77 | int memory_pitch; |
78 | SDL_mutex *hw_lock; |
79 | int sync_needed; |
80 | int was_flipped; |
81 | |
82 | /* Information for hardware surfaces */ |
83 | vidmem_bucket surfaces; |
84 | int surfaces_memtotal; |
85 | int surfaces_memleft; |
86 | |
87 | /* Information for double-buffering */ |
88 | int flip_page; |
89 | int flip_yoffset[2]; |
90 | Uint8 *flip_address[2]; |
91 | |
92 | /* Used to handle DGA events */ |
93 | int event_base; |
94 | #ifdef LOCK_DGA_DISPLAY |
95 | SDL_mutex *event_lock; |
96 | #endif |
97 | |
98 | /* Screensaver settings */ |
99 | int allow_screensaver; |
100 | }; |
101 | |
102 | /* Old variable names */ |
103 | #define DGA_Display (this->hidden->DGA_Display) |
104 | #define DGA_Screen DefaultScreen(DGA_Display) |
105 | #define DGA_colormap (this->hidden->DGA_colormap) |
106 | #define DGA_visualClass (this->hidden->visualClass) |
107 | #define memory_base (this->hidden->memory_base) |
108 | #define memory_pitch (this->hidden->memory_pitch) |
109 | #define flip_page (this->hidden->flip_page) |
110 | #define flip_yoffset (this->hidden->flip_yoffset) |
111 | #define flip_address (this->hidden->flip_address) |
112 | #define sync_needed (this->hidden->sync_needed) |
113 | #define was_flipped (this->hidden->was_flipped) |
114 | #define SDL_nummodes (this->hidden->SDL_nummodes) |
115 | #define SDL_modelist (this->hidden->SDL_modelist) |
116 | #define surfaces (this->hidden->surfaces) |
117 | #define surfaces_memtotal (this->hidden->surfaces_memtotal) |
118 | #define surfaces_memleft (this->hidden->surfaces_memleft) |
119 | #define hw_lock (this->hidden->hw_lock) |
120 | #define DGA_event_base (this->hidden->event_base) |
121 | #define event_lock (this->hidden->event_lock) |
122 | #define allow_screensaver (this->hidden->allow_screensaver) |
123 | |
124 | #endif /* _SDL_dgavideo_h */ |