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_fbvideo_h |
25 | #define _SDL_fbvideo_h |
26 | |
27 | #include <sys/types.h> |
28 | #include <termios.h> |
29 | #include <linux/fb.h> |
30 | |
31 | #include "SDL_mouse.h" |
32 | #include "SDL_mutex.h" |
33 | #include "../SDL_sysvideo.h" |
34 | #if SDL_INPUT_TSLIB |
35 | #include "tslib.h" |
36 | #endif |
37 | |
38 | /* Hidden "this" pointer for the video functions */ |
39 | #define _THIS SDL_VideoDevice *this |
40 | |
41 | typedef void FB_bitBlit( |
42 | Uint8 *src_pos, |
43 | int src_right_delta, /* pixels, not bytes */ |
44 | int src_down_delta, /* pixels, not bytes */ |
45 | Uint8 *dst_pos, |
46 | int dst_linebytes, |
47 | int width, |
48 | int height); |
49 | |
50 | /* This is the structure we use to keep track of video memory */ |
51 | typedef struct vidmem_bucket { |
52 | struct vidmem_bucket *prev; |
53 | int used; |
54 | int dirty; |
55 | char *base; |
56 | unsigned int size; |
57 | struct vidmem_bucket *next; |
58 | } vidmem_bucket; |
59 | |
60 | /* Private display data */ |
61 | struct SDL_PrivateVideoData { |
62 | int console_fd; |
63 | struct fb_var_screeninfo cache_vinfo; |
64 | struct fb_var_screeninfo saved_vinfo; |
65 | int saved_cmaplen; |
66 | __u16 *saved_cmap; |
67 | |
68 | int current_vt; |
69 | int saved_vt; |
70 | int keyboard_fd; |
71 | int saved_kbd_mode; |
72 | struct termios saved_kbd_termios; |
73 | |
74 | int mouse_fd; |
75 | #if SDL_INPUT_TSLIB |
76 | struct tsdev *ts_dev; |
77 | #endif |
78 | |
79 | char *mapped_mem; |
80 | char *shadow_mem; |
81 | int mapped_memlen; |
82 | int mapped_offset; |
83 | char *mapped_io; |
84 | long mapped_iolen; |
85 | int flip_page; |
86 | char *flip_address[2]; |
87 | int rotate; |
88 | int shadow_fb; /* Tells whether a shadow is being used. */ |
89 | FB_bitBlit *blitFunc; |
90 | int physlinebytes; /* Length of a line in bytes in physical fb */ |
91 | |
92 | #define NUM_MODELISTS 4 /* 8, 16, 24, and 32 bits-per-pixel */ |
93 | int SDL_nummodes[NUM_MODELISTS]; |
94 | SDL_Rect **SDL_modelist[NUM_MODELISTS]; |
95 | |
96 | vidmem_bucket surfaces; |
97 | int surfaces_memtotal; |
98 | int surfaces_memleft; |
99 | |
100 | SDL_mutex *hw_lock; |
101 | int switched_away; |
102 | struct fb_var_screeninfo screen_vinfo; |
103 | Uint32 screen_arealen; |
104 | Uint8 *screen_contents; |
105 | __u16 screen_palette[3*256]; |
106 | |
107 | void (*wait_vbl)(_THIS); |
108 | void (*wait_idle)(_THIS); |
109 | }; |
110 | /* Old variable names */ |
111 | #define console_fd (this->hidden->console_fd) |
112 | #define current_vt (this->hidden->current_vt) |
113 | #define saved_vt (this->hidden->saved_vt) |
114 | #define keyboard_fd (this->hidden->keyboard_fd) |
115 | #define saved_kbd_mode (this->hidden->saved_kbd_mode) |
116 | #define saved_kbd_termios (this->hidden->saved_kbd_termios) |
117 | #define mouse_fd (this->hidden->mouse_fd) |
118 | #if SDL_INPUT_TSLIB |
119 | #define ts_dev (this->hidden->ts_dev) |
120 | #endif |
121 | #define cache_vinfo (this->hidden->cache_vinfo) |
122 | #define saved_vinfo (this->hidden->saved_vinfo) |
123 | #define saved_cmaplen (this->hidden->saved_cmaplen) |
124 | #define saved_cmap (this->hidden->saved_cmap) |
125 | #define mapped_mem (this->hidden->mapped_mem) |
126 | #define shadow_mem (this->hidden->shadow_mem) |
127 | #define mapped_memlen (this->hidden->mapped_memlen) |
128 | #define mapped_offset (this->hidden->mapped_offset) |
129 | #define mapped_io (this->hidden->mapped_io) |
130 | #define mapped_iolen (this->hidden->mapped_iolen) |
131 | #define flip_page (this->hidden->flip_page) |
132 | #define flip_address (this->hidden->flip_address) |
133 | #define rotate (this->hidden->rotate) |
134 | #define shadow_fb (this->hidden->shadow_fb) |
135 | #define blitFunc (this->hidden->blitFunc) |
136 | #define physlinebytes (this->hidden->physlinebytes) |
137 | #define SDL_nummodes (this->hidden->SDL_nummodes) |
138 | #define SDL_modelist (this->hidden->SDL_modelist) |
139 | #define surfaces (this->hidden->surfaces) |
140 | #define surfaces_memtotal (this->hidden->surfaces_memtotal) |
141 | #define surfaces_memleft (this->hidden->surfaces_memleft) |
142 | #define hw_lock (this->hidden->hw_lock) |
143 | #define switched_away (this->hidden->switched_away) |
144 | #define screen_vinfo (this->hidden->screen_vinfo) |
145 | #define screen_arealen (this->hidden->screen_arealen) |
146 | #define screen_contents (this->hidden->screen_contents) |
147 | #define screen_palette (this->hidden->screen_palette) |
148 | #define wait_vbl (this->hidden->wait_vbl) |
149 | #define wait_idle (this->hidden->wait_idle) |
150 | |
151 | /* Accelerator types that are supported by the driver, but are not |
152 | necessarily in the kernel headers on the system we compile on. |
153 | */ |
154 | #ifndef FB_ACCEL_MATROX_MGAG400 |
155 | #define FB_ACCEL_MATROX_MGAG400 26 /* Matrox G400 */ |
156 | #endif |
157 | #ifndef FB_ACCEL_3DFX_BANSHEE |
158 | #define FB_ACCEL_3DFX_BANSHEE 31 /* 3Dfx Banshee */ |
159 | #endif |
160 | |
161 | /* These functions are defined in SDL_fbvideo.c */ |
162 | extern void FB_SavePaletteTo(_THIS, int palette_len, __u16 *area); |
163 | extern void FB_RestorePaletteFrom(_THIS, int palette_len, __u16 *area); |
164 | |
165 | /* These are utility functions for working with video surfaces */ |
166 | |
167 | static __inline__ void FB_AddBusySurface(SDL_Surface *surface) |
168 | { |
169 | ((vidmem_bucket *)surface->hwdata)->dirty = 1; |
170 | } |
171 | |
172 | static __inline__ int FB_IsSurfaceBusy(SDL_Surface *surface) |
173 | { |
174 | return ((vidmem_bucket *)surface->hwdata)->dirty; |
175 | } |
176 | |
177 | static __inline__ void FB_WaitBusySurfaces(_THIS) |
178 | { |
179 | vidmem_bucket *bucket; |
180 | |
181 | /* Wait for graphic operations to complete */ |
182 | wait_idle(this); |
183 | |
184 | /* Clear all surface dirty bits */ |
185 | for ( bucket=&surfaces; bucket; bucket=bucket->next ) { |
186 | bucket->dirty = 0; |
187 | } |
188 | } |
189 | |
190 | static __inline__ void FB_dst_to_xy(_THIS, SDL_Surface *dst, int *x, int *y) |
191 | { |
192 | *x = (long)((char *)dst->pixels - mapped_mem)%this->screen->pitch; |
193 | *y = (long)((char *)dst->pixels - mapped_mem)/this->screen->pitch; |
194 | if ( dst == this->screen ) { |
195 | *x += this->offset_x; |
196 | *y += this->offset_y; |
197 | } |
198 | } |
199 | |
200 | #endif /* _SDL_fbvideo_h */ |