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_xbios_h |
25 | #define _SDL_xbios_h |
26 | |
27 | #include "SDL_stdinc.h" |
28 | #include "../SDL_sysvideo.h" |
29 | |
30 | /* Hidden "this" pointer for the video functions */ |
31 | #define _THIS SDL_VideoDevice *this |
32 | |
33 | #define XBIOSMODE_DOUBLELINE (1<<0) |
34 | #define XBIOSMODE_C2P (1<<1) |
35 | |
36 | typedef struct |
37 | { |
38 | Uint16 number; /* Video mode number */ |
39 | Uint16 width; /* Size */ |
40 | Uint16 height; |
41 | Uint16 depth; /* bits per plane */ |
42 | Uint16 flags; |
43 | } xbiosmode_t; |
44 | |
45 | /* Private display data */ |
46 | #define NUM_MODELISTS 4 /* 8, 16, 24, and 32 bits-per-pixel */ |
47 | |
48 | struct SDL_PrivateVideoData { |
49 | long cookie_vdo; |
50 | long old_video_mode; /* Old video mode before entering SDL */ |
51 | void *old_video_base; /* Old pointer to screen buffer */ |
52 | void *old_palette; /* Old palette */ |
53 | Uint32 old_num_colors; /* Nb of colors in saved palette */ |
54 | |
55 | void *screens[2]; /* Pointers to aligned screen buffer */ |
56 | void *screensmem[2]; /* Pointers to screen buffer */ |
57 | void *shadowscreen; /* Shadow screen for c2p conversion */ |
58 | int frame_number; /* Number of frame for double buffer */ |
59 | int pitch; /* Destination line width for C2P */ |
60 | |
61 | SDL_bool centscreen; /* Centscreen extension present ? */ |
62 | |
63 | xbiosmode_t *current; /* Current set mode */ |
64 | int SDL_nummodes[NUM_MODELISTS]; |
65 | SDL_Rect **SDL_modelist[NUM_MODELISTS]; |
66 | xbiosmode_t **SDL_xbiosmode[NUM_MODELISTS]; |
67 | }; |
68 | |
69 | /* _VDO cookie values */ |
70 | enum { |
71 | VDO_ST=0, |
72 | VDO_STE, |
73 | VDO_TT, |
74 | VDO_F30, |
75 | VDO_MILAN |
76 | }; |
77 | |
78 | /* Monitor types */ |
79 | enum { |
80 | MONITOR_MONO=0, |
81 | MONITOR_TV, |
82 | MONITOR_VGA, |
83 | MONITOR_RGB |
84 | }; |
85 | |
86 | /* EgetShift masks */ |
87 | #define ES_MODE 0x0700 |
88 | |
89 | /* TT shifter modes */ |
90 | #ifndef ST_LOW |
91 | #define ST_LOW 0x0000 |
92 | #define ST_MED 0x0100 |
93 | #define ST_HIGH 0x0200 |
94 | #define TT_LOW 0x0700 |
95 | #define TT_MED 0x0300 |
96 | #define TT_HIGH 0x0600 |
97 | #endif |
98 | |
99 | /* Hidden structure -> variables names */ |
100 | #define SDL_nummodes (this->hidden->SDL_nummodes) |
101 | #define SDL_modelist (this->hidden->SDL_modelist) |
102 | #define SDL_xbiosmode (this->hidden->SDL_xbiosmode) |
103 | #define XBIOS_mutex (this->hidden->mutex) |
104 | #define XBIOS_cvdo (this->hidden->cookie_vdo) |
105 | #define XBIOS_oldpalette (this->hidden->old_palette) |
106 | #define XBIOS_oldnumcol (this->hidden->old_num_colors) |
107 | #define XBIOS_oldvbase (this->hidden->old_video_base) |
108 | #define XBIOS_oldvmode (this->hidden->old_video_mode) |
109 | #define XBIOS_screens (this->hidden->screens) |
110 | #define XBIOS_screensmem (this->hidden->screensmem) |
111 | #define XBIOS_shadowscreen (this->hidden->shadowscreen) |
112 | #define XBIOS_fbnum (this->hidden->frame_number) |
113 | #define XBIOS_pitch (this->hidden->pitch) |
114 | #define XBIOS_centscreen (this->hidden->centscreen) |
115 | #define XBIOS_current (this->hidden->current) |
116 | |
117 | /*--- Functions prototypes ---*/ |
118 | |
119 | void SDL_XBIOS_AddMode(_THIS, int actually_add, const xbiosmode_t *modeinfo); |
120 | |
121 | #endif /* _SDL_xbios_h */ |