src/include/video.h

/*
 *  video.h - Video/graphics emulation
 *
 *  SheepShaver (C) 1997-2008 Marc Hellwig and Christian Bauer
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

#ifndef VIDEO_H
#define VIDEO_H

extern bool VideoActivated(void);
extern bool VideoSnapshot(int xsize, int ysize, uint8 *p);

extern int16 VideoDoDriverIO(uint32 spaceID, uint32 commandID, uint32 commandContents, uint32 commandCode, uint32 commandKind);

// System specific and internal functions/data
struct VideoInfo {
        int     viType;                         // Screen/Window
        uint32 viRowBytes;              // width of each row in memory
        uint16 viXsize,viYsize; // Window
        uint32 viAppleMode;             // Screen Color Depth
        uint32 viAppleID;               // Screen DisplayID
};

extern struct VideoInfo VModes[];       // List of available video modes

enum {  // viAppleMode
        APPLE_1_BIT = 0x80,
        APPLE_2_BIT,
        APPLE_4_BIT,
        APPLE_8_BIT,
        APPLE_16_BIT,
        APPLE_32_BIT
};

// 1, 2, 4 and 8 bit depths use a color palette
inline bool IsDirectMode(int mode)
{
        return mode == APPLE_16_BIT || mode == APPLE_32_BIT;
}

// Return the depth code that corresponds to the specified bits-per-pixel value
inline int DepthModeForPixelDepth(int depth)
{
        switch (depth) {
        case 1: return APPLE_1_BIT;
        case 2: return APPLE_2_BIT;
        case 4: return APPLE_4_BIT;
        case 8: return APPLE_8_BIT;
        case 15: case 16: return APPLE_16_BIT;
        case 24: case 32: return APPLE_32_BIT;
        default: return APPLE_1_BIT;
        }
}

// Return a bytes-per-row value (assuming no padding) for the specified depth and pixel width
inline uint32 TrivialBytesPerRow(uint32 width, int mode)
{
        switch (mode) {
        case APPLE_1_BIT: return width / 8;
        case APPLE_2_BIT: return width / 4;
        case APPLE_4_BIT: return width / 2;
        case APPLE_8_BIT: return width;
        case APPLE_16_BIT: return width * 2;
        case APPLE_32_BIT: return width * 4;
        default: return width;
        }
}

enum {  // viAppleID
        APPLE_640x480 = 0x81,
        APPLE_W_640x480,
        APPLE_800x600,
        APPLE_W_800x600,
        APPLE_1024x768,
        APPLE_1152x768,
        APPLE_1152x900,
        APPLE_1280x1024,
        APPLE_1600x1200,
        APPLE_CUSTOM,
        APPLE_ID_MIN = APPLE_640x480,
        APPLE_ID_MAX = APPLE_CUSTOM
};

enum {  // Display type
        DIS_INVALID,
        DIS_SCREEN,
        DIS_WINDOW
};

extern bool video_activated;            // Flag: video display activated, mouse and keyboard data valid
extern uint32 screen_base;                      // Frame buffer base address
extern int cur_mode;                                    // Number of current video mode (index in VModes array)
extern int display_type;                        // Current display type (see above)
extern rgb_color mac_pal[256];
extern uint8 remap_mac_be[256];
extern uint8 MacCursor[68];

struct VidLocals{
        uint16  saveMode;
        uint32  saveData;
        uint16  savePage;
        uint32  saveBaseAddr;
        uint32  gammaTable;                     // Mac address of gamma tble
        uint32  maxGammaTableSize;      // Biggest gamma table allocated
        uint32  saveVidParms;
        bool    luminanceMapping;       // Luminance mapping on/off
        bool    cursorHardware;         // True if using hardware cursor
        int32   cursorX;                        // Hardware cursor state
        int32   cursorY;
        uint32  cursorVisible;
        uint32  cursorSet;
        bool    cursorHotFlag;
        uint8   cursorHotX;
        uint8   cursorHotY;
        uint32  vslServiceID;           // VSL interrupt service ID
        bool    interruptsEnabled;      // VBL interrupts on/off
        uint32  regEntryID;                     // Mac address of the service owner
};

extern VidLocals *private_data; // Pointer to driver local variables (there is only one display, so this is ok)

extern bool VideoInit(void);
extern void VideoExit(void);
extern void VideoVBL(void);
extern void VideoInstallAccel(void);
extern void VideoQuitFullScreen(void);

extern void video_set_palette(void);
extern void video_set_cursor(void);
extern bool video_can_change_cursor(void);
extern int16 video_mode_change(VidLocals *csSave, uint32 ParamPtr);
extern void video_set_dirty_area(int x, int y, int w, int h);

extern int16 VSLDoInterruptService(uint32 arg1);
extern void NQDMisc(uint32 arg1, uintptr arg2);

// Native QuickDraw acceleration callbacks
extern bool NQD_sync_hook(uint32);
extern bool NQD_bitblt_hook(uint32);
extern bool NQD_fillrect_hook(uint32);
extern bool NQD_unknown_hook(uint32);
extern void NQD_bitblt(uint32);
extern void NQD_invrect(uint32);
extern void NQD_fillrect(uint32);

extern bool keyfile_valid;

#endif
Revision:	1.15
Committed:	2008-06-25T02:52:22Z (15 years, 10 months 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.
#	Content
1	/*
2	* video.h - Video/graphics emulation
3	*
4	* SheepShaver (C) 1997-2008 Marc Hellwig and 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	extern bool VideoActivated(void);
25	extern bool VideoSnapshot(int xsize, int ysize, uint8 *p);
26
27	extern int16 VideoDoDriverIO(uint32 spaceID, uint32 commandID, uint32 commandContents, uint32 commandCode, uint32 commandKind);
28
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	// 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	enum { // viAppleID
84	APPLE_640x480 = 0x81,
85	APPLE_W_640x480,
86	APPLE_800x600,
87	APPLE_W_800x600,
88	APPLE_1024x768,
89	APPLE_1152x768,
90	APPLE_1152x900,
91	APPLE_1280x1024,
92	APPLE_1600x1200,
93	APPLE_CUSTOM,
94	APPLE_ID_MIN = APPLE_640x480,
95	APPLE_ID_MAX = APPLE_CUSTOM
96	};
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	uint32 gammaTable; // Mac address of gamma tble
118	uint32 maxGammaTableSize; // Biggest gamma table allocated
119	uint32 saveVidParms;
120	bool luminanceMapping; // Luminance mapping on/off
121	bool cursorHardware; // True if using hardware cursor
122	int32 cursorX; // Hardware cursor state
123	int32 cursorY;
124	uint32 cursorVisible;
125	uint32 cursorSet;
126	bool cursorHotFlag;
127	uint8 cursorHotX;
128	uint8 cursorHotY;
129	uint32 vslServiceID; // VSL interrupt service ID
130	bool interruptsEnabled; // VBL interrupts on/off
131	uint32 regEntryID; // Mac address of the service owner
132	};
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	extern bool video_can_change_cursor(void);
145	extern int16 video_mode_change(VidLocals *csSave, uint32 ParamPtr);
146	extern void video_set_dirty_area(int x, int y, int w, int h);
147
148	extern int16 VSLDoInterruptService(uint32 arg1);
149	extern void NQDMisc(uint32 arg1, uintptr arg2);
150
151	// Native QuickDraw acceleration callbacks
152	extern bool NQD_sync_hook(uint32);
153	extern bool NQD_bitblt_hook(uint32);
154	extern bool NQD_fillrect_hook(uint32);
155	extern bool NQD_unknown_hook(uint32);
156	extern void NQD_bitblt(uint32);
157	extern void NQD_invrect(uint32);
158	extern void NQD_fillrect(uint32);
159
160	extern bool keyfile_valid;
161
162	#endif