BasiliskII/src/video.cpp

/*
 *  video.cpp - Video/graphics emulation
 *
 *  Basilisk II (C) 1997-2001 Christian Bauer
 *  Portions (C) 1997-1999 Marc Hellwig
 *
 *  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
 */

/*
 *  SEE ALSO
 *    Inside Macintosh: Devices, chapter 1 "Device Manager"
 *    Designing Cards and Drivers for the Macintosh Family, Second Edition
 */

#include <stdio.h>

#include "sysdeps.h"
#include "cpu_emulation.h"
#include "main.h"
#include "macos_util.h"
#include "video.h"
#include "video_defs.h"

#define DEBUG 1
#include "debug.h"


// List of supported video modes
vector<video_mode> VideoModes;

// Description of the main monitor
monitor_desc VideoMonitor;

// Local variables (per monitor)
struct {
        monitor_desc *desc;                     // Pointer to description of monitor handled by this instance of the driver
        uint8 palette[256 * 3];         // Color palette, 256 entries, RGB
        bool luminance_mapping;         // Luminance mapping on/off
        bool interrupts_enabled;        // VBL interrupts on/off
        uint16 current_mode;            // Currently selected depth/resolution
        uint32 current_id;
        uint16 preferred_mode;          // Preferred depth/resolution
        uint32 preferred_id;
} VidLocal;


/*
 *  Check whether specified resolution ID is one of the supported resolutions
 */

static bool has_resolution(uint32 id)
{
        std::vector<video_mode>::const_iterator i = VideoModes.begin(), end = VideoModes.end();
        while (i != end) {
                if (i->resolution_id == id)
                        return true;
                ++i;
        }
        return false;
}


/*
 *  Find specified mode (depth/resolution) (or VideoModes.end() if not found)
 */

static std::vector<video_mode>::const_iterator find_mode(uint16 mode, uint32 id)
{
        std::vector<video_mode>::const_iterator i = VideoModes.begin(), end = VideoModes.end();
        while (i != end) {
                if (i->resolution_id == id && DepthToAppleMode(i->depth) == mode)
                        return i;
                ++i;
        }
        return i;
}


/*
 *  Find maximum supported depth for given resolution ID
 */

static video_depth max_depth_of_resolution(uint32 id)
{
        video_depth m = VDEPTH_1BIT;
        vector<video_mode>::const_iterator i = VideoModes.begin(), end = VideoModes.end();
        while (i != end) {
                if (i->depth > m)
                        m = i->depth;
                ++i;
        }
        return m;
}


/*
 *  Get X/Y size of specified resolution
 */

static void get_size_of_resolution(uint32 id, uint32 &x, uint32 &y)
{
        vector<video_mode>::const_iterator i = VideoModes.begin(), end = VideoModes.end();
        while (i != end) {
                if (i->resolution_id == id) {
                        x = i->x;
                        y = i->y;
                        return;
                }
                ++i;
        }
}


/*
 *  Driver Open() routine
 */

int16 VideoDriverOpen(uint32 pb, uint32 dce)
{
        D(bug("VideoDriverOpen\n"));

        // This shouldn't happen unless the platform-specific video code is broken
        if (VideoModes.empty())
                fprintf(stderr, "No valid video modes found (broken video driver?)\n");

        // Init local variables
        VidLocal.desc = &VideoMonitor;
        VidLocal.luminance_mapping = false;
        VidLocal.interrupts_enabled = false;
        VidLocal.current_mode = DepthToAppleMode(VidLocal.desc->mode.depth);
        VidLocal.current_id = VidLocal.desc->mode.resolution_id;
        VidLocal.preferred_mode = VidLocal.current_mode;
        VidLocal.preferred_id = VidLocal.current_id;

        // Init color palette (solid gray)
        if (!IsDirectMode(VidLocal.desc->mode)) {
                for (int i=0; i<256; i++) {
                        VidLocal.palette[i * 3 + 0] = 127;
                        VidLocal.palette[i * 3 + 1] = 127;
                        VidLocal.palette[i * 3 + 2] = 127;
                }
                video_set_palette(VidLocal.palette);
        }
        return noErr;
}


/*
 *  Driver Control() routine
 */

int16 VideoDriverControl(uint32 pb, uint32 dce)
{
        uint16 code = ReadMacInt16(pb + csCode);
        uint32 param = ReadMacInt32(pb + csParam);
        D(bug("VideoDriverControl %d\n", code));
        switch (code) {

                case cscSetMode: {              // Set color depth
                        uint16 mode = ReadMacInt16(param + csMode);
                        D(bug(" SetMode %04x\n", mode));

                        if (mode != VidLocal.current_mode) {
                                std::vector<video_mode>::const_iterator i = find_mode(mode, VidLocal.current_id);
                                if (i == VideoModes.end()) {
                                        WriteMacInt32(param + csBaseAddr, VidLocal.desc->mac_frame_base);
                                        return paramErr;
                                }
                                video_switch_to_mode(*i);
                                VidLocal.current_mode = mode;
                        }
                        WriteMacInt32(param + csBaseAddr, VidLocal.desc->mac_frame_base);
                        return noErr;
                }

                case cscSetEntries: {   // Set palette
                        D(bug(" SetEntries table %08lx, count %d, start %d\n", ReadMacInt32(param + csTable), ReadMacInt16(param + csCount), ReadMacInt16(param + csStart)));
                        if (IsDirectMode(VidLocal.desc->mode))
                                return controlErr;

                        uint32 s_pal = ReadMacInt32(param + csTable);   // Source palette
                        uint8 *d_pal;                                                                   // Destination palette
                        uint16 count = ReadMacInt16(param + csCount);
                        if (!s_pal || count > 255)
                                return paramErr;

                        if (ReadMacInt16(param + csStart) == 0xffff) {  // Indexed
                                for (uint32 i=0; i<=count; i++) {
                                        d_pal = VidLocal.palette + ReadMacInt16(s_pal) * 3;
                                        uint8 red = (uint16)ReadMacInt16(s_pal + 2) >> 8;
                                        uint8 green = (uint16)ReadMacInt16(s_pal + 4) >> 8;
                                        uint8 blue = (uint16)ReadMacInt16(s_pal + 6) >> 8;
                                        if (VidLocal.luminance_mapping)
                                                red = green = blue = (red * 0x4ccc + green * 0x970a + blue * 0x1c29) >> 16;
                                        *d_pal++ = red;
                                        *d_pal++ = green;
                                        *d_pal++ = blue;
                                        s_pal += 8;
                                }
                        } else {                                                                                // Sequential
                                d_pal = VidLocal.palette + ReadMacInt16(param + csStart) * 3;
                                for (uint32 i=0; i<=count; i++) {
                                        uint8 red = (uint16)ReadMacInt16(s_pal + 2) >> 8;
                                        uint8 green = (uint16)ReadMacInt16(s_pal + 4) >> 8;
                                        uint8 blue = (uint16)ReadMacInt16(s_pal + 6) >> 8;
                                        if (VidLocal.luminance_mapping)
                                                red = green = blue = (red * 0x4ccc + green * 0x970a + blue * 0x1c29) >> 16;
                                        *d_pal++ = red;
                                        *d_pal++ = green;
                                        *d_pal++ = blue;
                                        s_pal += 8;
                                }
                        }
                        video_set_palette(VidLocal.palette);
                        return noErr;
                }

                case cscSetGamma:               // Set gamma table
                        D(bug(" SetGamma\n"));
                        //!!
                        return noErr;

                case cscGrayPage: {             // Fill page with dithered gray pattern
                        D(bug(" GrayPage %d\n", ReadMacInt16(param + csPage)));
                        if (ReadMacInt16(param + csPage))
                                return paramErr;

                        uint32 pattern[6] = {
                                0xaaaaaaaa,             // 1 bpp
                                0xcccccccc,             // 2 bpp
                                0xf0f0f0f0,             // 4 bpp
                                0xff00ff00,             // 8 bpp
                                0xffff0000,             // 16 bpp
                                0xffffffff              // 32 bpp
                        };
                        uint32 p = VidLocal.desc->mac_frame_base;
                        uint32 pat = pattern[VidLocal.desc->mode.depth];
                        for (uint32 y=0; y<VidLocal.desc->mode.y; y++) {
                                for (uint32 x=0; x<VidLocal.desc->mode.bytes_per_row; x+=4) {
                                        WriteMacInt32(p + x, pat);
                                        if (VidLocal.desc->mode.depth == VDEPTH_32BIT)
                                                pat = ~pat;
                                }
                                p += VidLocal.desc->mode.bytes_per_row;
                                pat = ~pat;
                        }
                        return noErr;
                }

                case cscSetGray:                // Enable/disable luminance mapping
                        D(bug(" SetGray %02x\n", ReadMacInt8(param + csMode)));
                        VidLocal.luminance_mapping = ReadMacInt8(param + csMode);
                        return noErr;

                case cscSetInterrupt:   // Enable/disable VBL
                        D(bug(" SetInterrupt %02x\n", ReadMacInt8(param + csMode)));
                        VidLocal.interrupts_enabled = (ReadMacInt8(param + csMode) == 0);
                        return noErr;

                // case cscDirectSetEntries:

                case cscSetDefaultMode: { // Set default color depth
                        uint16 mode = ReadMacInt16(param + csMode);
                        D(bug(" SetDefaultMode %04x\n", mode));
                        VidLocal.preferred_mode = mode;
                        return noErr;
                }

                case cscSwitchMode: {   // Switch video mode (depth and resolution)
                        uint16 mode = ReadMacInt16(param + csMode);
                        uint32 id = ReadMacInt32(param + csData);
                        D(bug(" SwitchMode %04x, %08x\n", mode, id));

                        if (mode != VidLocal.current_mode || id != VidLocal.current_id) {
                                std::vector<video_mode>::const_iterator i = find_mode(mode, id);
                                if (i == VideoModes.end()) {
                                        WriteMacInt32(param + csBaseAddr, VidLocal.desc->mac_frame_base);
                                        return paramErr;
                                }
                                video_switch_to_mode(*i);
                                VidLocal.current_mode = mode;
                                VidLocal.current_id = id;
                        }
                        WriteMacInt32(param + csBaseAddr, VidLocal.desc->mac_frame_base);
                        return noErr;
                }

                case cscSavePreferredConfiguration: {
                        uint16 mode = ReadMacInt16(param + csMode);
                        uint32 id = ReadMacInt32(param + csData);
                        D(bug(" SavePreferredConfiguration %04x, %08x\n", mode, id));
                        VidLocal.preferred_mode = mode;
                        VidLocal.preferred_id = id;
                        return noErr;
                }

                default:
                        printf("WARNING: Unknown VideoDriverControl(%d)\n", code);
                        return controlErr;
        }
}


/*
 *  Driver Status() routine
 */

int16 VideoDriverStatus(uint32 pb, uint32 dce)
{
        uint16 code = ReadMacInt16(pb + csCode);
        uint32 param = ReadMacInt32(pb + csParam);
        D(bug("VideoDriverStatus %d\n", code));
        switch (code) {

                case cscGetMode:                        // Get current color depth
                        D(bug(" GetMode -> %04x, base %08x\n", VidLocal.current_mode, VidLocal.desc->mac_frame_base));
                        WriteMacInt16(param + csMode, VidLocal.current_mode);
                        WriteMacInt16(param + csPage, 0);
                        WriteMacInt32(param + csBaseAddr, VidLocal.desc->mac_frame_base);
                        return noErr;

                // case cscGetEntries:

                case cscGetPageCnt:                     // Get number of pages
                        D(bug(" GetPageCnt -> 1\n"));
                        WriteMacInt16(param + csPage, 1);
                        return noErr;

                case cscGetPageBase:            // Get page base address
                        D(bug(" GetPageBase -> %08x\n", VidLocal.desc->mac_frame_base));
                        WriteMacInt32(param + csBaseAddr, VidLocal.desc->mac_frame_base);
                        return noErr;

                case cscGetGray:                        // Get luminance mapping flag
                        D(bug(" GetGray -> %d\n", VidLocal.luminance_mapping));
                        WriteMacInt8(param, VidLocal.luminance_mapping ? 1 : 0);
                        return noErr;

                case cscGetInterrupt:           // Get interrupt disable flag
                        D(bug(" GetInterrupt -> %d\n", VidLocal.interrupts_enabled));
                        WriteMacInt8(param, VidLocal.interrupts_enabled ? 0 : 1);
                        return noErr;

                // case cscGetGamma:

                case cscGetDefaultMode:         // Get default color depth
                        D(bug(" GetDefaultMode -> %04x\n", VidLocal.preferred_mode));
                        WriteMacInt16(param + csMode, VidLocal.preferred_mode);
                        return noErr;

                case cscGetCurMode:                     // Get current video mode (depth and resolution)
                        D(bug(" GetCurMode -> %04x/%08x\n", VidLocal.current_mode, VidLocal.current_id));
                        WriteMacInt16(param + csMode, VidLocal.current_mode);
                        WriteMacInt32(param + csData, VidLocal.current_id);
                        WriteMacInt16(param + csPage, 0);
                        WriteMacInt32(param + csBaseAddr, VidLocal.desc->mac_frame_base);
                        return noErr;

                case cscGetConnection:          // Get monitor information
                        D(bug(" GetConnection\n"));
                        WriteMacInt16(param + csDisplayType, 6);                // 21" Multiscan
                        WriteMacInt8(param + csConnectTaggedType, 6);
                        WriteMacInt8(param + csConnectTaggedData, 0x23);
                        WriteMacInt32(param + csConnectFlags, 0x03);    // All modes valid and safe
                        WriteMacInt32(param + csDisplayComponent, 0);
                        return noErr;

                case cscGetModeBaseAddress:     // Get frame buffer base address
                        D(bug(" GetModeBaseAddress -> %08x\n", VidLocal.desc->mac_frame_base));
                        WriteMacInt32(param + csBaseAddr, VidLocal.desc->mac_frame_base);       // Base address of video RAM for the current DisplayModeID and relative bit depth
                        return noErr;

                case cscGetPreferredConfiguration: // Get default video mode (depth and resolution)
                        D(bug(" GetPreferredConfiguration -> %04x/%08x\n", VidLocal.preferred_mode, VidLocal.preferred_id));
                        WriteMacInt16(param + csMode, VidLocal.preferred_mode);
                        WriteMacInt32(param + csData, VidLocal.preferred_id);
                        return noErr;

                case cscGetNextResolution: {    // Called iteratively to obtain a list of all supported resolutions
                        uint32 id = ReadMacInt32(param + csPreviousDisplayModeID);
                        D(bug(" GetNextResolution %08x\n", id));

                        switch (id) {
                                case 0:
                                        // Return current resolution
                                        id = VidLocal.current_id;
                                        break;

                                case 0xfffffffe:
                                        // Return first supported resolution
                                        id = 0x80;
                                        while (!has_resolution(id))
                                                id++;
                                        break;

                                default:
                                        // Get next resolution
                                        if (!has_resolution(id))
                                                return paramErr;
                                        id++;
                                        while (!has_resolution(id) && id < 0x100)
                                                id++;
                                        if (id == 0x100) { // No more resolutions
                                                WriteMacInt32(param + csRIDisplayModeID, 0xfffffffd);
                                                return noErr;
                                        }
                                        break;
                        }

                        WriteMacInt32(param + csRIDisplayModeID, id);
                        uint32 x, y;
                        get_size_of_resolution(id, x, y);
                        WriteMacInt32(param + csHorizontalPixels, x);
                        WriteMacInt32(param + csVerticalLines, y);
                        WriteMacInt32(param + csRefreshRate, 75 << 16);
                        WriteMacInt16(param + csMaxDepthMode, DepthToAppleMode(max_depth_of_resolution(id)));
                        uint32 flags = 0xb; // mode valid, safe and shown in Monitors panel
                        if (id == VidLocal.preferred_id)
                                flags |= 4; // default mode
                        WriteMacInt32(param + csResolutionFlags, flags);
                        return noErr;
                }

                case cscGetVideoParameters: {   // Get information about specified resolution/depth
                        uint32 id = ReadMacInt32(param + csDisplayModeID);
                        uint16 mode = ReadMacInt16(param + csDepthMode);
                        D(bug(" GetVideoParameters %04x/%08x\n", mode, id));

                        vector<video_mode>::const_iterator i = VideoModes.begin(), end = VideoModes.end();
                        while (i != end) {
                                if (DepthToAppleMode(i->depth) == mode && i->resolution_id == id) {
                                        uint32 vp = ReadMacInt32(param + csVPBlockPtr);
                                        WriteMacInt32(vp + vpBaseOffset, 0);
                                        WriteMacInt16(vp + vpRowBytes, i->bytes_per_row);
                                        WriteMacInt16(vp + vpBounds, 0);
                                        WriteMacInt16(vp + vpBounds + 2, 0);
                                        WriteMacInt16(vp + vpBounds + 4, i->y);
                                        WriteMacInt16(vp + vpBounds + 6, i->x);
                                        WriteMacInt16(vp + vpVersion, 0);
                                        WriteMacInt16(vp + vpPackType, 0);
                                        WriteMacInt32(vp + vpPackSize, 0);
                                        WriteMacInt32(vp + vpHRes, 0x00480000);
                                        WriteMacInt32(vp + vpVRes, 0x00480000);
                                        uint32 pix_type, pix_size, cmp_count, cmp_size, dev_type;
                                        switch (i->depth) {
                                                case VDEPTH_1BIT:
                                                        pix_type = 0; pix_size = 1;
                                                        cmp_count = 1; cmp_size = 1;
                                                        dev_type = 0; // CLUT
                                                        break;
                                                case VDEPTH_2BIT:
                                                        pix_type = 0; pix_size = 2;
                                                        cmp_count = 1; cmp_size = 2;
                                                        dev_type = 0; // CLUT
                                                        break;
                                                case VDEPTH_4BIT:
                                                        pix_type = 0; pix_size = 4;
                                                        cmp_count = 1; cmp_size = 4;
                                                        dev_type = 0; // CLUT
                                                        break;
                                                case VDEPTH_8BIT:
                                                        pix_type = 0; pix_size = 8;
                                                        cmp_count = 1; cmp_size = 8;
                                                        dev_type = 0; // CLUT
                                                        break;
                                                case VDEPTH_16BIT:
                                                        pix_type = 0x10; pix_size = 16;
                                                        cmp_count = 3; cmp_size = 5;
                                                        dev_type = 2; // direct
                                                        break;
                                                case VDEPTH_32BIT:
                                                        pix_type = 0x10; pix_size = 32;
                                                        cmp_count = 3; cmp_size = 8;
                                                        dev_type = 2; // direct
                                                        break;
                                        }
                                        WriteMacInt16(vp + vpPixelType, pix_type);
                                        WriteMacInt16(vp + vpPixelSize, pix_size);
                                        WriteMacInt16(vp + vpCmpCount, cmp_count);
                                        WriteMacInt16(vp + vpCmpSize, cmp_size);
                                        WriteMacInt32(param + csPageCount, 1);
                                        WriteMacInt32(param + csDeviceType, dev_type);
                                        return noErr;
                                }
                                ++i;
                        }
                        return paramErr; // specified resolution/depth not supported
                }

                case cscGetModeTiming: {        // Get video timing for specified resolution
                        uint32 id = ReadMacInt32(param + csTimingMode);
                        D(bug(" GetModeTiming %08x\n", id));
                        if (!has_resolution(id))
                                return paramErr;

                        WriteMacInt32(param + csTimingFormat, FOURCC('d', 'e', 'c', 'l'));
                        WriteMacInt32(param + csTimingData, 0); // unknown
                        uint32 flags = 0xb; // mode valid, safe and shown in Monitors panel
                        if (id == VidLocal.preferred_id)
                                flags |= 4; // default mode
                        WriteMacInt32(param + csTimingFlags, flags);
                        return noErr;
                }

                default:
                        printf("WARNING: Unknown VideoDriverStatus(%d)\n", code);
                        return statusErr;
        }
}
Revision:	1.10
Committed:	2001-06-27T20:05:23Z (23 years, 5 months ago) by cebix
Branch:	MAIN
Changes since 1.9:	+41 -15 lines
Log Message:	depth/resolution switching infrastructure should be complete now; slot ROM contains all supported depths, default mode is stored in XPRAM upon startup, and added video_switch_to_mode() call (currently unimplemented in all drivers)
#	User	Rev	Content
1	cebix	1.1	/*
2			* video.cpp - Video/graphics emulation
3			*
4	cebix	1.7	* Basilisk II (C) 1997-2001 Christian Bauer
5	cebix	1.1	* Portions (C) 1997-1999 Marc Hellwig
6			*
7			* This program is free software; you can redistribute it and/or modify
8			* it under the terms of the GNU General Public License as published by
9			* the Free Software Foundation; either version 2 of the License, or
10			* (at your option) any later version.
11			*
12			* This program is distributed in the hope that it will be useful,
13			* but WITHOUT ANY WARRANTY; without even the implied warranty of
14			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15			* GNU General Public License for more details.
16			*
17			* You should have received a copy of the GNU General Public License
18			* along with this program; if not, write to the Free Software
19			* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20			*/
21
22			/*
23			* SEE ALSO
24			* Inside Macintosh: Devices, chapter 1 "Device Manager"
25			* Designing Cards and Drivers for the Macintosh Family, Second Edition
26			*/
27
28			#include <stdio.h>
29
30			#include "sysdeps.h"
31			#include "cpu_emulation.h"
32			#include "main.h"
33			#include "macos_util.h"
34			#include "video.h"
35			#include "video_defs.h"
36
37	cebix	1.10	#define DEBUG 1
38	cebix	1.1	#include "debug.h"
39
40
41	cebix	1.9	// List of supported video modes
42			vector<video_mode> VideoModes;
43
44	cebix	1.1	// Description of the main monitor
45	cebix	1.9	monitor_desc VideoMonitor;
46	cebix	1.1
47			// Local variables (per monitor)
48			struct {
49	cebix	1.9	monitor_desc *desc; // Pointer to description of monitor handled by this instance of the driver
50	cebix	1.1	uint8 palette[256 * 3]; // Color palette, 256 entries, RGB
51			bool luminance_mapping; // Luminance mapping on/off
52			bool interrupts_enabled; // VBL interrupts on/off
53	cebix	1.9	uint16 current_mode; // Currently selected depth/resolution
54			uint32 current_id;
55			uint16 preferred_mode; // Preferred depth/resolution
56			uint32 preferred_id;
57	cebix	1.1	} VidLocal;
58
59
60			/*
61	cebix	1.9	* Check whether specified resolution ID is one of the supported resolutions
62			*/
63
64			static bool has_resolution(uint32 id)
65			{
66	cebix	1.10	std::vector<video_mode>::const_iterator i = VideoModes.begin(), end = VideoModes.end();
67	cebix	1.9	while (i != end) {
68			if (i->resolution_id == id)
69			return true;
70			++i;
71			}
72			return false;
73			}
74
75
76			/*
77	cebix	1.10	* Find specified mode (depth/resolution) (or VideoModes.end() if not found)
78			*/
79
80			static std::vector<video_mode>::const_iterator find_mode(uint16 mode, uint32 id)
81			{
82			std::vector<video_mode>::const_iterator i = VideoModes.begin(), end = VideoModes.end();
83			while (i != end) {
84			if (i->resolution_id == id && DepthToAppleMode(i->depth) == mode)
85			return i;
86			++i;
87			}
88			return i;
89			}
90
91
92			/*
93	cebix	1.9	* Find maximum supported depth for given resolution ID
94			*/
95
96			static video_depth max_depth_of_resolution(uint32 id)
97			{
98			video_depth m = VDEPTH_1BIT;
99			vector<video_mode>::const_iterator i = VideoModes.begin(), end = VideoModes.end();
100			while (i != end) {
101			if (i->depth > m)
102			m = i->depth;
103			++i;
104			}
105			return m;
106			}
107
108
109			/*
110			* Get X/Y size of specified resolution
111			*/
112
113			static void get_size_of_resolution(uint32 id, uint32 &x, uint32 &y)
114			{
115			vector<video_mode>::const_iterator i = VideoModes.begin(), end = VideoModes.end();
116			while (i != end) {
117			if (i->resolution_id == id) {
118			x = i->x;
119			y = i->y;
120			return;
121			}
122			++i;
123			}
124			}
125
126
127			/*
128	cebix	1.1	* Driver Open() routine
129			*/
130
131	cebix	1.2	int16 VideoDriverOpen(uint32 pb, uint32 dce)
132	cebix	1.1	{
133	cebix	1.2	D(bug("VideoDriverOpen\n"));
134	cebix	1.1
135	cebix	1.9	// This shouldn't happen unless the platform-specific video code is broken
136			if (VideoModes.empty())
137			fprintf(stderr, "No valid video modes found (broken video driver?)\n");
138
139	cebix	1.1	// Init local variables
140			VidLocal.desc = &VideoMonitor;
141			VidLocal.luminance_mapping = false;
142			VidLocal.interrupts_enabled = false;
143	cebix	1.9	VidLocal.current_mode = DepthToAppleMode(VidLocal.desc->mode.depth);
144			VidLocal.current_id = VidLocal.desc->mode.resolution_id;
145			VidLocal.preferred_mode = VidLocal.current_mode;
146			VidLocal.preferred_id = VidLocal.current_id;
147	cebix	1.1
148			// Init color palette (solid gray)
149			if (!IsDirectMode(VidLocal.desc->mode)) {
150			for (int i=0; i<256; i++) {
151			VidLocal.palette[i * 3 + 0] = 127;
152			VidLocal.palette[i * 3 + 1] = 127;
153			VidLocal.palette[i * 3 + 2] = 127;
154			}
155			video_set_palette(VidLocal.palette);
156			}
157			return noErr;
158			}
159
160
161			/*
162			* Driver Control() routine
163			*/
164
165	cebix	1.2	int16 VideoDriverControl(uint32 pb, uint32 dce)
166	cebix	1.1	{
167			uint16 code = ReadMacInt16(pb + csCode);
168			uint32 param = ReadMacInt32(pb + csParam);
169	cebix	1.2	D(bug("VideoDriverControl %d\n", code));
170	cebix	1.1	switch (code) {
171
172	cebix	1.9	case cscSetMode: { // Set color depth
173			uint16 mode = ReadMacInt16(param + csMode);
174			D(bug(" SetMode %04x\n", mode));
175	cebix	1.10
176			if (mode != VidLocal.current_mode) {
177			std::vector<video_mode>::const_iterator i = find_mode(mode, VidLocal.current_id);
178			if (i == VideoModes.end()) {
179			WriteMacInt32(param + csBaseAddr, VidLocal.desc->mac_frame_base);
180			return paramErr;
181			}
182			video_switch_to_mode(*i);
183			VidLocal.current_mode = mode;
184			}
185	cebix	1.1	WriteMacInt32(param + csBaseAddr, VidLocal.desc->mac_frame_base);
186	cebix	1.10	return noErr;
187	cebix	1.9	}
188	cebix	1.1
189			case cscSetEntries: { // Set palette
190			D(bug(" SetEntries table %08lx, count %d, start %d\n", ReadMacInt32(param + csTable), ReadMacInt16(param + csCount), ReadMacInt16(param + csStart)));
191			if (IsDirectMode(VidLocal.desc->mode))
192			return controlErr;
193
194			uint32 s_pal = ReadMacInt32(param + csTable); // Source palette
195			uint8 *d_pal; // Destination palette
196			uint16 count = ReadMacInt16(param + csCount);
197			if (!s_pal \|\| count > 255)
198			return paramErr;
199
200			if (ReadMacInt16(param + csStart) == 0xffff) { // Indexed
201			for (uint32 i=0; i<=count; i++) {
202			d_pal = VidLocal.palette + ReadMacInt16(s_pal) * 3;
203			uint8 red = (uint16)ReadMacInt16(s_pal + 2) >> 8;
204			uint8 green = (uint16)ReadMacInt16(s_pal + 4) >> 8;
205			uint8 blue = (uint16)ReadMacInt16(s_pal + 6) >> 8;
206			if (VidLocal.luminance_mapping)
207			red = green = blue = (red * 0x4ccc + green * 0x970a + blue * 0x1c29) >> 16;
208			*d_pal++ = red;
209			*d_pal++ = green;
210			*d_pal++ = blue;
211			s_pal += 8;
212			}
213			} else { // Sequential
214			d_pal = VidLocal.palette + ReadMacInt16(param + csStart) * 3;
215			for (uint32 i=0; i<=count; i++) {
216			uint8 red = (uint16)ReadMacInt16(s_pal + 2) >> 8;
217			uint8 green = (uint16)ReadMacInt16(s_pal + 4) >> 8;
218			uint8 blue = (uint16)ReadMacInt16(s_pal + 6) >> 8;
219			if (VidLocal.luminance_mapping)
220			red = green = blue = (red * 0x4ccc + green * 0x970a + blue * 0x1c29) >> 16;
221			*d_pal++ = red;
222			*d_pal++ = green;
223			*d_pal++ = blue;
224			s_pal += 8;
225			}
226			}
227			video_set_palette(VidLocal.palette);
228			return noErr;
229			}
230
231			case cscSetGamma: // Set gamma table
232			D(bug(" SetGamma\n"));
233	cebix	1.9	//!!
234	cebix	1.1	return noErr;
235
236			case cscGrayPage: { // Fill page with dithered gray pattern
237			D(bug(" GrayPage %d\n", ReadMacInt16(param + csPage)));
238			if (ReadMacInt16(param + csPage))
239			return paramErr;
240
241			uint32 pattern[6] = {
242			0xaaaaaaaa, // 1 bpp
243			0xcccccccc, // 2 bpp
244			0xf0f0f0f0, // 4 bpp
245			0xff00ff00, // 8 bpp
246			0xffff0000, // 16 bpp
247			0xffffffff // 32 bpp
248			};
249			uint32 p = VidLocal.desc->mac_frame_base;
250	cebix	1.9	uint32 pat = pattern[VidLocal.desc->mode.depth];
251			for (uint32 y=0; y<VidLocal.desc->mode.y; y++) {
252			for (uint32 x=0; x<VidLocal.desc->mode.bytes_per_row; x+=4) {
253	cebix	1.8	WriteMacInt32(p + x, pat);
254	cebix	1.9	if (VidLocal.desc->mode.depth == VDEPTH_32BIT)
255	cebix	1.1	pat = ~pat;
256			}
257	cebix	1.9	p += VidLocal.desc->mode.bytes_per_row;
258	cebix	1.1	pat = ~pat;
259			}
260			return noErr;
261			}
262
263			case cscSetGray: // Enable/disable luminance mapping
264			D(bug(" SetGray %02x\n", ReadMacInt8(param + csMode)));
265			VidLocal.luminance_mapping = ReadMacInt8(param + csMode);
266			return noErr;
267
268			case cscSetInterrupt: // Enable/disable VBL
269			D(bug(" SetInterrupt %02x\n", ReadMacInt8(param + csMode)));
270			VidLocal.interrupts_enabled = (ReadMacInt8(param + csMode) == 0);
271			return noErr;
272
273	cebix	1.9	// case cscDirectSetEntries:
274
275			case cscSetDefaultMode: { // Set default color depth
276			uint16 mode = ReadMacInt16(param + csMode);
277			D(bug(" SetDefaultMode %04x\n", mode));
278			VidLocal.preferred_mode = mode;
279			return noErr;
280			}
281
282			case cscSwitchMode: { // Switch video mode (depth and resolution)
283			uint16 mode = ReadMacInt16(param + csMode);
284			uint32 id = ReadMacInt32(param + csData);
285			D(bug(" SwitchMode %04x, %08x\n", mode, id));
286	cebix	1.10
287			if (mode != VidLocal.current_mode \|\| id != VidLocal.current_id) {
288			std::vector<video_mode>::const_iterator i = find_mode(mode, id);
289			if (i == VideoModes.end()) {
290			WriteMacInt32(param + csBaseAddr, VidLocal.desc->mac_frame_base);
291			return paramErr;
292			}
293			video_switch_to_mode(*i);
294			VidLocal.current_mode = mode;
295			VidLocal.current_id = id;
296			}
297	cebix	1.9	WriteMacInt32(param + csBaseAddr, VidLocal.desc->mac_frame_base);
298	cebix	1.10	return noErr;
299	cebix	1.9	}
300
301			case cscSavePreferredConfiguration: {
302			uint16 mode = ReadMacInt16(param + csMode);
303			uint32 id = ReadMacInt32(param + csData);
304			D(bug(" SavePreferredConfiguration %04x, %08x\n", mode, id));
305			VidLocal.preferred_mode = mode;
306			VidLocal.preferred_id = id;
307			return noErr;
308			}
309
310	cebix	1.1	default:
311	cebix	1.2	printf("WARNING: Unknown VideoDriverControl(%d)\n", code);
312	cebix	1.1	return controlErr;
313			}
314			}
315
316
317			/*
318			* Driver Status() routine
319			*/
320
321	cebix	1.2	int16 VideoDriverStatus(uint32 pb, uint32 dce)
322	cebix	1.1	{
323			uint16 code = ReadMacInt16(pb + csCode);
324			uint32 param = ReadMacInt32(pb + csParam);
325	cebix	1.2	D(bug("VideoDriverStatus %d\n", code));
326	cebix	1.1	switch (code) {
327
328	cebix	1.9	case cscGetMode: // Get current color depth
329			D(bug(" GetMode -> %04x, base %08x\n", VidLocal.current_mode, VidLocal.desc->mac_frame_base));
330			WriteMacInt16(param + csMode, VidLocal.current_mode);
331			WriteMacInt16(param + csPage, 0);
332			WriteMacInt32(param + csBaseAddr, VidLocal.desc->mac_frame_base);
333			return noErr;
334
335			// case cscGetEntries:
336
337	cebix	1.1	case cscGetPageCnt: // Get number of pages
338	cebix	1.9	D(bug(" GetPageCnt -> 1\n"));
339	cebix	1.1	WriteMacInt16(param + csPage, 1);
340			return noErr;
341
342			case cscGetPageBase: // Get page base address
343	cebix	1.9	D(bug(" GetPageBase -> %08x\n", VidLocal.desc->mac_frame_base));
344	cebix	1.1	WriteMacInt32(param + csBaseAddr, VidLocal.desc->mac_frame_base);
345			return noErr;
346
347			case cscGetGray: // Get luminance mapping flag
348	cebix	1.9	D(bug(" GetGray -> %d\n", VidLocal.luminance_mapping));
349			WriteMacInt8(param, VidLocal.luminance_mapping ? 1 : 0);
350	cebix	1.1	return noErr;
351
352			case cscGetInterrupt: // Get interrupt disable flag
353	cebix	1.9	D(bug(" GetInterrupt -> %d\n", VidLocal.interrupts_enabled));
354			WriteMacInt8(param, VidLocal.interrupts_enabled ? 0 : 1);
355	cebix	1.1	return noErr;
356
357	cebix	1.9	// case cscGetGamma:
358
359			case cscGetDefaultMode: // Get default color depth
360			D(bug(" GetDefaultMode -> %04x\n", VidLocal.preferred_mode));
361			WriteMacInt16(param + csMode, VidLocal.preferred_mode);
362	cebix	1.1	return noErr;
363
364	cebix	1.9	case cscGetCurMode: // Get current video mode (depth and resolution)
365			D(bug(" GetCurMode -> %04x/%08x\n", VidLocal.current_mode, VidLocal.current_id));
366			WriteMacInt16(param + csMode, VidLocal.current_mode);
367			WriteMacInt32(param + csData, VidLocal.current_id);
368	cebix	1.1	WriteMacInt16(param + csPage, 0);
369			WriteMacInt32(param + csBaseAddr, VidLocal.desc->mac_frame_base);
370			return noErr;
371
372			case cscGetConnection: // Get monitor information
373			D(bug(" GetConnection\n"));
374			WriteMacInt16(param + csDisplayType, 6); // 21" Multiscan
375			WriteMacInt8(param + csConnectTaggedType, 6);
376			WriteMacInt8(param + csConnectTaggedData, 0x23);
377			WriteMacInt32(param + csConnectFlags, 0x03); // All modes valid and safe
378			WriteMacInt32(param + csDisplayComponent, 0);
379			return noErr;
380
381	cebix	1.9	case cscGetModeBaseAddress: // Get frame buffer base address
382			D(bug(" GetModeBaseAddress -> %08x\n", VidLocal.desc->mac_frame_base));
383			WriteMacInt32(param + csBaseAddr, VidLocal.desc->mac_frame_base); // Base address of video RAM for the current DisplayModeID and relative bit depth
384	cebix	1.1	return noErr;
385
386	cebix	1.9	case cscGetPreferredConfiguration: // Get default video mode (depth and resolution)
387			D(bug(" GetPreferredConfiguration -> %04x/%08x\n", VidLocal.preferred_mode, VidLocal.preferred_id));
388			WriteMacInt16(param + csMode, VidLocal.preferred_mode);
389			WriteMacInt32(param + csData, VidLocal.preferred_id);
390			return noErr;
391
392			case cscGetNextResolution: { // Called iteratively to obtain a list of all supported resolutions
393			uint32 id = ReadMacInt32(param + csPreviousDisplayModeID);
394			D(bug(" GetNextResolution %08x\n", id));
395
396			switch (id) {
397			case 0:
398			// Return current resolution
399			id = VidLocal.current_id;
400			break;
401
402			case 0xfffffffe:
403			// Return first supported resolution
404			id = 0x80;
405			while (!has_resolution(id))
406			id++;
407			break;
408
409			default:
410			// Get next resolution
411			if (!has_resolution(id))
412			return paramErr;
413			id++;
414			while (!has_resolution(id) && id < 0x100)
415			id++;
416			if (id == 0x100) { // No more resolutions
417			WriteMacInt32(param + csRIDisplayModeID, 0xfffffffd);
418			return noErr;
419			}
420			break;
421			}
422
423			WriteMacInt32(param + csRIDisplayModeID, id);
424			uint32 x, y;
425			get_size_of_resolution(id, x, y);
426			WriteMacInt32(param + csHorizontalPixels, x);
427			WriteMacInt32(param + csVerticalLines, y);
428			WriteMacInt32(param + csRefreshRate, 75 << 16);
429			WriteMacInt16(param + csMaxDepthMode, DepthToAppleMode(max_depth_of_resolution(id)));
430			uint32 flags = 0xb; // mode valid, safe and shown in Monitors panel
431			if (id == VidLocal.preferred_id)
432			flags \|= 4; // default mode
433			WriteMacInt32(param + csResolutionFlags, flags);
434	jlachmann	1.5	return noErr;
435	cebix	1.9	}
436	jlachmann	1.5
437	cebix	1.9	case cscGetVideoParameters: { // Get information about specified resolution/depth
438			uint32 id = ReadMacInt32(param + csDisplayModeID);
439			uint16 mode = ReadMacInt16(param + csDepthMode);
440			D(bug(" GetVideoParameters %04x/%08x\n", mode, id));
441
442			vector<video_mode>::const_iterator i = VideoModes.begin(), end = VideoModes.end();
443			while (i != end) {
444			if (DepthToAppleMode(i->depth) == mode && i->resolution_id == id) {
445			uint32 vp = ReadMacInt32(param + csVPBlockPtr);
446			WriteMacInt32(vp + vpBaseOffset, 0);
447			WriteMacInt16(vp + vpRowBytes, i->bytes_per_row);
448			WriteMacInt16(vp + vpBounds, 0);
449			WriteMacInt16(vp + vpBounds + 2, 0);
450			WriteMacInt16(vp + vpBounds + 4, i->y);
451			WriteMacInt16(vp + vpBounds + 6, i->x);
452			WriteMacInt16(vp + vpVersion, 0);
453			WriteMacInt16(vp + vpPackType, 0);
454			WriteMacInt32(vp + vpPackSize, 0);
455			WriteMacInt32(vp + vpHRes, 0x00480000);
456			WriteMacInt32(vp + vpVRes, 0x00480000);
457			uint32 pix_type, pix_size, cmp_count, cmp_size, dev_type;
458			switch (i->depth) {
459			case VDEPTH_1BIT:
460			pix_type = 0; pix_size = 1;
461			cmp_count = 1; cmp_size = 1;
462			dev_type = 0; // CLUT
463			break;
464			case VDEPTH_2BIT:
465			pix_type = 0; pix_size = 2;
466			cmp_count = 1; cmp_size = 2;
467			dev_type = 0; // CLUT
468			break;
469			case VDEPTH_4BIT:
470			pix_type = 0; pix_size = 4;
471			cmp_count = 1; cmp_size = 4;
472			dev_type = 0; // CLUT
473			break;
474			case VDEPTH_8BIT:
475			pix_type = 0; pix_size = 8;
476			cmp_count = 1; cmp_size = 8;
477			dev_type = 0; // CLUT
478			break;
479			case VDEPTH_16BIT:
480			pix_type = 0x10; pix_size = 16;
481			cmp_count = 3; cmp_size = 5;
482			dev_type = 2; // direct
483			break;
484			case VDEPTH_32BIT:
485			pix_type = 0x10; pix_size = 32;
486			cmp_count = 3; cmp_size = 8;
487			dev_type = 2; // direct
488			break;
489			}
490			WriteMacInt16(vp + vpPixelType, pix_type);
491			WriteMacInt16(vp + vpPixelSize, pix_size);
492			WriteMacInt16(vp + vpCmpCount, cmp_count);
493			WriteMacInt16(vp + vpCmpSize, cmp_size);
494			WriteMacInt32(param + csPageCount, 1);
495			WriteMacInt32(param + csDeviceType, dev_type);
496			return noErr;
497			}
498			++i;
499			}
500			return paramErr; // specified resolution/depth not supported
501			}
502
503			case cscGetModeTiming: { // Get video timing for specified resolution
504			uint32 id = ReadMacInt32(param + csTimingMode);
505			D(bug(" GetModeTiming %08x\n", id));
506			if (!has_resolution(id))
507			return paramErr;
508
509			WriteMacInt32(param + csTimingFormat, FOURCC('d', 'e', 'c', 'l'));
510			WriteMacInt32(param + csTimingData, 0); // unknown
511			uint32 flags = 0xb; // mode valid, safe and shown in Monitors panel
512			if (id == VidLocal.preferred_id)
513			flags \|= 4; // default mode
514			WriteMacInt32(param + csTimingFlags, flags);
515	cebix	1.1	return noErr;
516	cebix	1.9	}
517	cebix	1.1
518			default:
519	cebix	1.2	printf("WARNING: Unknown VideoDriverStatus(%d)\n", code);
520	cebix	1.1	return statusErr;
521			}
522			}