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root/cebix/SheepShaver/src/include/video.h
Revision: 1.15
Committed: 2008-06-25T02:52:22Z (16 years ago) by asvitkine
Content type: text/plain
Branch: MAIN
CVS Tags: HEAD
Changes since 1.14: +5 -1 lines
Log Message: 
[patch from Kelvin Delbarre]
Software cursor mode is now supported, although currently the existing hardware
cursor mode is used whenever possible. (Software mode will be used if you are
running with a recent version of SDL's Quartz video driver, since a bug in SDL
1.2.11 and later prevents the hardware cursor from working properly with that
driver.)

In hardware cursor mode, the hot-spot is now determined heuristically. Formerly
it could not be determined and was always (1,1), an annoyance for many cursors
other than the arrow.

In hardware cursor mode, the cursor will now be hidden when requested by the
emulated OS (such as when you are typing in a text field).

In hardware cursor mode, some cursor image formats that the code does not handle
correctly will now be rejected, causing the emulated OS to revert temporarily to
software cursor mode. Formerly you would just end up with random garbage for a
cursor. This typically happened for grayscale or color cursors; rejecting images
with rowBytes != 2 eliminates the worst cases.

File Contents

# User Rev Content
1 cebix 1.1 /*
2     * video.h - Video/graphics emulation
3     *
4 gbeauche 1.14 * SheepShaver (C) 1997-2008 Marc Hellwig and Christian Bauer
5 cebix 1.1 *
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     extern bool VideoActivated(void);
25     extern bool VideoSnapshot(int xsize, int ysize, uint8 *p);
26    
27 gbeauche 1.8 extern int16 VideoDoDriverIO(uint32 spaceID, uint32 commandID, uint32 commandContents, uint32 commandCode, uint32 commandKind);
28 cebix 1.1
29     // System specific and internal functions/data
30     struct VideoInfo {
31     int viType; // Screen/Window
32     uint32 viRowBytes; // width of each row in memory
33     uint16 viXsize,viYsize; // Window
34     uint32 viAppleMode; // Screen Color Depth
35     uint32 viAppleID; // Screen DisplayID
36     };
37    
38     extern struct VideoInfo VModes[]; // List of available video modes
39    
40     enum { // viAppleMode
41     APPLE_1_BIT = 0x80,
42     APPLE_2_BIT,
43     APPLE_4_BIT,
44     APPLE_8_BIT,
45     APPLE_16_BIT,
46     APPLE_32_BIT
47     };
48    
49 gbeauche 1.3 // 1, 2, 4 and 8 bit depths use a color palette
50     inline bool IsDirectMode(int mode)
51     {
52     return mode == APPLE_16_BIT || mode == APPLE_32_BIT;
53     }
54    
55     // Return the depth code that corresponds to the specified bits-per-pixel value
56     inline int DepthModeForPixelDepth(int depth)
57     {
58     switch (depth) {
59     case 1: return APPLE_1_BIT;
60     case 2: return APPLE_2_BIT;
61     case 4: return APPLE_4_BIT;
62     case 8: return APPLE_8_BIT;
63     case 15: case 16: return APPLE_16_BIT;
64     case 24: case 32: return APPLE_32_BIT;
65     default: return APPLE_1_BIT;
66     }
67     }
68    
69     // Return a bytes-per-row value (assuming no padding) for the specified depth and pixel width
70     inline uint32 TrivialBytesPerRow(uint32 width, int mode)
71     {
72     switch (mode) {
73     case APPLE_1_BIT: return width / 8;
74     case APPLE_2_BIT: return width / 4;
75     case APPLE_4_BIT: return width / 2;
76     case APPLE_8_BIT: return width;
77     case APPLE_16_BIT: return width * 2;
78     case APPLE_32_BIT: return width * 4;
79     default: return width;
80     }
81     }
82    
83 cebix 1.1 enum { // viAppleID
84     APPLE_640x480 = 0x81,
85     APPLE_W_640x480,
86     APPLE_800x600,
87     APPLE_W_800x600,
88     APPLE_1024x768,
89 gbeauche 1.4 APPLE_1152x768,
90 cebix 1.1 APPLE_1152x900,
91     APPLE_1280x1024,
92     APPLE_1600x1200,
93 gbeauche 1.12 APPLE_CUSTOM,
94 cebix 1.1 APPLE_ID_MIN = APPLE_640x480,
95 gbeauche 1.12 APPLE_ID_MAX = APPLE_CUSTOM
96 cebix 1.1 };
97    
98     enum { // Display type
99     DIS_INVALID,
100     DIS_SCREEN,
101     DIS_WINDOW
102     };
103    
104     extern bool video_activated; // Flag: video display activated, mouse and keyboard data valid
105     extern uint32 screen_base; // Frame buffer base address
106     extern int cur_mode; // Number of current video mode (index in VModes array)
107     extern int display_type; // Current display type (see above)
108     extern rgb_color mac_pal[256];
109     extern uint8 remap_mac_be[256];
110     extern uint8 MacCursor[68];
111    
112     struct VidLocals{
113     uint16 saveMode;
114     uint32 saveData;
115     uint16 savePage;
116     uint32 saveBaseAddr;
117 gbeauche 1.9 uint32 gammaTable; // Mac address of gamma tble
118 cebix 1.1 uint32 maxGammaTableSize; // Biggest gamma table allocated
119     uint32 saveVidParms;
120     bool luminanceMapping; // Luminance mapping on/off
121 asvitkine 1.15 bool cursorHardware; // True if using hardware cursor
122     int32 cursorX; // Hardware cursor state
123 cebix 1.1 int32 cursorY;
124     uint32 cursorVisible;
125     uint32 cursorSet;
126 asvitkine 1.15 bool cursorHotFlag;
127     uint8 cursorHotX;
128     uint8 cursorHotY;
129 cebix 1.1 uint32 vslServiceID; // VSL interrupt service ID
130     bool interruptsEnabled; // VBL interrupts on/off
131 gbeauche 1.10 uint32 regEntryID; // Mac address of the service owner
132 cebix 1.1 };
133    
134     extern VidLocals *private_data; // Pointer to driver local variables (there is only one display, so this is ok)
135    
136     extern bool VideoInit(void);
137     extern void VideoExit(void);
138     extern void VideoVBL(void);
139     extern void VideoInstallAccel(void);
140     extern void VideoQuitFullScreen(void);
141    
142     extern void video_set_palette(void);
143     extern void video_set_cursor(void);
144 gbeauche 1.7 extern bool video_can_change_cursor(void);
145 cebix 1.1 extern int16 video_mode_change(VidLocals *csSave, uint32 ParamPtr);
146 gbeauche 1.13 extern void video_set_dirty_area(int x, int y, int w, int h);
147 cebix 1.1
148     extern int16 VSLDoInterruptService(uint32 arg1);
149 gbeauche 1.8 extern void NQDMisc(uint32 arg1, uintptr arg2);
150 cebix 1.1
151 gbeauche 1.5 // Native QuickDraw acceleration callbacks
152     extern bool NQD_sync_hook(uint32);
153     extern bool NQD_bitblt_hook(uint32);
154 gbeauche 1.6 extern bool NQD_fillrect_hook(uint32);
155 gbeauche 1.13 extern bool NQD_unknown_hook(uint32);
156 gbeauche 1.5 extern void NQD_bitblt(uint32);
157 gbeauche 1.6 extern void NQD_invrect(uint32);
158     extern void NQD_fillrect(uint32);
159 gbeauche 1.5
160 cebix 1.1 extern bool keyfile_valid;
161    
162     #endif