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root/cebix/BasiliskII/src/include/video.h
Revision: 1.6
Committed: 2001-06-27T19:03:38Z (23 years, 4 months ago) by cebix
Content type: text/plain
Branch: MAIN
Changes since 1.5: +44 -14 lines
Log Message:
added infrastructure for resolution/depth switching (currently, all video
drivers only support one mode, the one selected by the user)

File Contents

# Content
1 /*
2 * video.h - Video/graphics emulation
3 *
4 * Basilisk II (C) 1997-2001 Christian Bauer
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19 */
20
21 #ifndef VIDEO_H
22 #define VIDEO_H
23
24 #include <vector>
25
26 // Color depth codes
27 enum video_depth {
28 VDEPTH_1BIT, // 2 colors
29 VDEPTH_2BIT, // 4 colors
30 VDEPTH_4BIT, // 16 colors
31 VDEPTH_8BIT, // 256 colors
32 VDEPTH_16BIT, // "Thousands"
33 VDEPTH_32BIT // "Millions"
34 };
35
36 inline bool IsDirectMode(video_depth depth)
37 {
38 return depth == VDEPTH_16BIT || depth == VDEPTH_32BIT;
39 }
40
41 inline uint16 DepthToAppleMode(video_depth depth)
42 {
43 return depth + 0x80;
44 }
45
46 inline video_depth AppleModeToDepth(uint16 mode)
47 {
48 return video_depth(mode - 0x80);
49 }
50
51 // Description of one video mode
52 struct video_mode {
53 uint32 x; // X size of screen (pixels)
54 uint32 y; // Y size of screen (pixels)
55 uint32 resolution_id; // Resolution ID (should be >= 0x80 and uniquely identify the sets of modes with the same X/Y size)
56 uint32 bytes_per_row; // Bytes per row of frame buffer
57 video_depth depth; // Color depth (see definitions above)
58 };
59
60 inline bool IsDirectMode(const video_mode &mode)
61 {
62 return IsDirectMode(mode.depth);
63 }
64
65 // List of all supported video modes
66 extern vector<video_mode> VideoModes;
67
68 // Description for one (possibly virtual) monitor
69 struct monitor_desc {
70 uint32 mac_frame_base; // Mac frame buffer address
71 video_mode mode; // Currently selected video mode description
72 };
73
74 extern monitor_desc VideoMonitor; // Description of the main monitor, set by VideoInit()
75
76 extern int16 VideoDriverOpen(uint32 pb, uint32 dce);
77 extern int16 VideoDriverControl(uint32 pb, uint32 dce);
78 extern int16 VideoDriverStatus(uint32 pb, uint32 dce);
79
80 // System specific and internal functions/data
81 extern bool VideoInit(bool classic);
82 extern void VideoExit(void);
83
84 extern void VideoQuitFullScreen(void);
85
86 extern void VideoInterrupt(void);
87 extern void VideoRefresh(void);
88
89 extern void video_set_palette(uint8 *pal);
90
91 #endif