src/include/video.h

/*
 *  video.h - Video/graphics emulation
 *
 *  SheepShaver (C) 1997-2004 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_ID_MIN = APPLE_640x480,
        APPLE_ID_MAX = APPLE_1600x1200
};

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 GammaTbl;

struct VidLocals{
        uint16  saveMode;
        uint32  saveData;
        uint16  savePage;
        uint32  saveBaseAddr;
        GammaTbl *gammaTable;           // Current gamma table
        uint32  maxGammaTableSize;      // Biggest gamma table allocated
        uint32  saveVidParms;
        bool    luminanceMapping;       // Luminance mapping on/off
        int32   cursorX;                        // Hardware cursor state. Unused, but must be remembered
        int32   cursorY;
        uint32  cursorVisible;
        uint32  cursorSet;
        uint32  vslServiceID;           // VSL interrupt service ID
        bool    interruptsEnabled;      // VBL interrupts on/off
        uint32  regEntryID[4];
};

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 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 void NQD_bitblt(uint32);
extern void NQD_invrect(uint32);
extern void NQD_fillrect(uint32);

extern bool keyfile_valid;

#endif
Revision:	1.8
Committed:	2004-11-13T14:09:16Z (20 years ago) by gbeauche
Content type:	text/plain
Branch:	MAIN
Changes since 1.7:	+2 -2 lines
Log Message:	Implement Direct Addressing mode similarly to Basilisk II. This is to get SheepShaver working on OSes that don't support maipping of Low Memory globals at 0x00000000, e.g. Windows.
#	User	Rev	Content
1	cebix	1.1	/*
2			* video.h - Video/graphics emulation
3			*
4	cebix	1.2	* SheepShaver (C) 1997-2004 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			APPLE_ID_MIN = APPLE_640x480,
94			APPLE_ID_MAX = APPLE_1600x1200
95			};
96
97			enum { // Display type
98			DIS_INVALID,
99			DIS_SCREEN,
100			DIS_WINDOW
101			};
102
103			extern bool video_activated; // Flag: video display activated, mouse and keyboard data valid
104			extern uint32 screen_base; // Frame buffer base address
105			extern int cur_mode; // Number of current video mode (index in VModes array)
106			extern int display_type; // Current display type (see above)
107			extern rgb_color mac_pal[256];
108			extern uint8 remap_mac_be[256];
109			extern uint8 MacCursor[68];
110
111			struct GammaTbl;
112
113			struct VidLocals{
114			uint16 saveMode;
115			uint32 saveData;
116			uint16 savePage;
117			uint32 saveBaseAddr;
118			GammaTbl *gammaTable; // Current gamma table
119			uint32 maxGammaTableSize; // Biggest gamma table allocated
120			uint32 saveVidParms;
121			bool luminanceMapping; // Luminance mapping on/off
122			int32 cursorX; // Hardware cursor state. Unused, but must be remembered
123			int32 cursorY;
124			uint32 cursorVisible;
125			uint32 cursorSet;
126			uint32 vslServiceID; // VSL interrupt service ID
127			bool interruptsEnabled; // VBL interrupts on/off
128			uint32 regEntryID[4];
129			};
130
131			extern VidLocals *private_data; // Pointer to driver local variables (there is only one display, so this is ok)
132
133			extern bool VideoInit(void);
134			extern void VideoExit(void);
135			extern void VideoVBL(void);
136			extern void VideoInstallAccel(void);
137			extern void VideoQuitFullScreen(void);
138
139			extern void video_set_palette(void);
140			extern void video_set_cursor(void);
141	gbeauche	1.7	extern bool video_can_change_cursor(void);
142	cebix	1.1	extern int16 video_mode_change(VidLocals *csSave, uint32 ParamPtr);
143
144			extern int16 VSLDoInterruptService(uint32 arg1);
145	gbeauche	1.8	extern void NQDMisc(uint32 arg1, uintptr arg2);
146	cebix	1.1
147	gbeauche	1.5	// Native QuickDraw acceleration callbacks
148			extern bool NQD_sync_hook(uint32);
149			extern bool NQD_bitblt_hook(uint32);
150	gbeauche	1.6	extern bool NQD_fillrect_hook(uint32);
151	gbeauche	1.5	extern void NQD_bitblt(uint32);
152	gbeauche	1.6	extern void NQD_invrect(uint32);
153			extern void NQD_fillrect(uint32);
154	gbeauche	1.5
155	cebix	1.1	extern bool keyfile_valid;
156
157			#endif