src/AmigaOS/video_amiga.cpp

/*
 *  video_amiga.cpp - Video/graphics emulation, AmigaOS specific stuff
 *
 *  Basilisk II (C) 1997-1999 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
 */

#include <exec/types.h>
#include <intuition/intuition.h>
#include <graphics/rastport.h>
#include <graphics/gfx.h>
#include <dos/dostags.h>
#include <devices/timer.h>
#include <proto/exec.h>
#include <proto/dos.h>
#include <proto/intuition.h>
#include <proto/graphics.h>
#include <proto/Picasso96.h>

#include "sysdeps.h"
#include "main.h"
#include "adb.h"
#include "prefs.h"
#include "user_strings.h"
#include "video.h"

#define DEBUG 1
#include "debug.h"


// Display types
enum {
        DISPLAY_WINDOW,
        DISPLAY_PIP,
        DISPLAY_SCREEN
};

// Global variables
static int32 frame_skip;
static int display_type = DISPLAY_WINDOW;               // See enum above
static struct Screen *the_screen = NULL;
static struct Window *the_win = NULL;
static struct BitMap *the_bitmap = NULL;
static LONG black_pen = -1, white_pen = -1;
static struct Process *periodic_proc = NULL;    // Periodic process

extern struct Task *MainTask;                                   // Pointer to main task (from main_amiga.cpp)


// Amiga -> Mac raw keycode translation table
static const uint8 keycode2mac[0x80] = {
        0x0a, 0x12, 0x13, 0x14, 0x15, 0x17, 0x16, 0x1a, //   `   1   2   3   4   5   6   7
        0x1c, 0x19, 0x1d, 0x1b, 0x18, 0x2a, 0xff, 0x52, //   8   9   0   -   =   \ inv   0
        0x0c, 0x0d, 0x0e, 0x0f, 0x11, 0x10, 0x20, 0x22, //   Q   W   E   R   T   Y   U   I
        0x1f, 0x23, 0x21, 0x1e, 0xff, 0x53, 0x54, 0x55, //   O   P   [   ] inv   1   2   3
        0x00, 0x01, 0x02, 0x03, 0x05, 0x04, 0x26, 0x28, //   A   S   D   F   G   H   J   K
        0x25, 0x29, 0x27, 0x2a, 0xff, 0x56, 0x57, 0x58, //   L   ;   '   # inv   4   5   6
        0x32, 0x06, 0x07, 0x08, 0x09, 0x0b, 0x2d, 0x2e, //   <   Z   X   C   V   B   N   M
        0x2b, 0x2f, 0x2c, 0xff, 0x41, 0x59, 0x5b, 0x5c, //   ,   .   / inv   .   7   8   9
        0x31, 0x33, 0x30, 0x4c, 0x24, 0x35, 0x75, 0xff, // SPC BSP TAB ENT RET ESC DEL inv
        0xff, 0xff, 0x4e, 0xff, 0x3e, 0x3d, 0x3c, 0x3b, // inv inv   - inv CUP CDN CRT CLF
        0x7a, 0x78, 0x63, 0x76, 0x60, 0x61, 0x62, 0x64, //  F1  F2  F3  F4  F5  F6  F7  F8
        0x65, 0x6d, 0x47, 0x51, 0x4b, 0x43, 0x45, 0x72, //  F9 F10   (   )   /   *   + HLP
        0x38, 0x38, 0x39, 0x36, 0x3a, 0x3a, 0x37, 0x37, // SHL SHR CAP CTL ALL ALR AML AMR
        0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, // inv inv inv inv inv inv inv inv
        0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, // inv inv inv inv inv inv inv inv
        0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff  // inv inv inv inv inv inv inv inv
};


// Prototypes
static void periodic_func(void);


/*
 *  Initialization
 */

// Open window
static bool init_window(int width, int height)
{
        // Set absolute mouse mode
        ADBSetRelMouseMode(false);

        // Open window
        the_win = OpenWindowTags(NULL,
                WA_Left, 0, WA_Top, 0,
                WA_InnerWidth, width, WA_InnerHeight, height,
                WA_SimpleRefresh, TRUE,
                WA_NoCareRefresh, TRUE,
                WA_Activate, TRUE,
                WA_RMBTrap, TRUE,
                WA_ReportMouse, TRUE,
                WA_DragBar, TRUE,
                WA_DepthGadget, TRUE,
                WA_SizeGadget, FALSE,
                WA_Title, GetString(STR_WINDOW_TITLE),
                TAG_END
        );
        if (the_win == NULL) {
                ErrorAlert(GetString(STR_OPEN_WINDOW_ERR));
                return false;
        }

        // Create bitmap ("height + 2" for safety)
        the_bitmap = AllocBitMap(width, height + 2, 1, BMF_CLEAR, NULL);
        if (the_bitmap == NULL) {
                ErrorAlert(GetString(STR_NO_MEM_ERR));
                return false;
        }

        // Set VideoMonitor
        VideoMonitor.mac_frame_base = (uint32)the_bitmap->Planes[0];
        VideoMonitor.bytes_per_row = the_bitmap->BytesPerRow;
        VideoMonitor.x = width;
        VideoMonitor.y = height;
        VideoMonitor.mode = VMODE_1BIT;

        // Set FgPen and BgPen
        black_pen = ObtainBestPenA(the_win->WScreen->ViewPort.ColorMap, 0, 0, 0, NULL);
        white_pen = ObtainBestPenA(the_win->WScreen->ViewPort.ColorMap, 0xffffffff, 0xffffffff, 0xffffffff, NULL);
        SetAPen(the_win->RPort, black_pen);
        SetBPen(the_win->RPort, white_pen);
        SetDrMd(the_win->RPort, JAM2);
        return true;
}

// Open PIP (requires Picasso96)
static bool init_pip(int width, int height)
{
        // Set absolute mouse mode
        ADBSetRelMouseMode(false);

        // Open window
        ULONG error = 0;
        the_win = p96PIP_OpenTags(
                P96PIP_SourceFormat, RGBFB_R5G5B5,
                P96PIP_SourceWidth, width,
                P96PIP_SourceHeight, height,
                P96PIP_ErrorCode, &error,
                WA_Left, 0, WA_Top, 0,
                WA_InnerWidth, width, WA_InnerHeight, height,
                WA_SimpleRefresh, TRUE,
                WA_NoCareRefresh, TRUE,
                WA_Activate, TRUE,
                WA_RMBTrap, TRUE,
                WA_ReportMouse, TRUE,
                WA_DragBar, TRUE,
                WA_DepthGadget, TRUE,
                WA_SizeGadget, FALSE,
                WA_Title, GetString(STR_WINDOW_TITLE),
                WA_PubScreenName, "Workbench",
                TAG_END
        );
        if (the_win == NULL || error) {
                ErrorAlert(GetString(STR_OPEN_WINDOW_ERR));
                return false;
        }

        // Find bitmap
        p96PIP_GetTags(the_win, P96PIP_SourceBitMap, &the_bitmap, TAG_END);

        // Set VideoMonitor
        VideoMonitor.mac_frame_base = p96GetBitMapAttr(the_bitmap, P96BMA_MEMORY);
        VideoMonitor.bytes_per_row = p96GetBitMapAttr(the_bitmap, P96BMA_BYTESPERROW);
        VideoMonitor.x = width;
        VideoMonitor.y = height;
        VideoMonitor.mode = VMODE_16BIT;
        return true;
}

// Open screen (requires Picasso96 as we need chunky modes)
static bool init_screen(ULONG mode_id)
{
        // Set relative mouse mode
        ADBSetRelMouseMode(true);

        // Check if the mode is a Picasso96 mode
        if (!p96GetModeIDAttr(mode_id, P96IDA_ISP96)) {
                ErrorAlert(GetString(STR_NO_P96_MODE_ERR));
                return false;
        }

        // Check if the mode is one we can handle
        uint32 depth = p96GetModeIDAttr(mode_id, P96IDA_DEPTH);
        uint32 format = p96GetModeIDAttr(mode_id, P96IDA_RGBFORMAT);
        switch (depth) {
                case 8:
                        VideoMonitor.mode = VMODE_8BIT;
                        break;
                case 15:
                case 16:
                        if (format != RGBFB_R5G5B5) {
                                ErrorAlert(GetString(STR_WRONG_SCREEN_FORMAT_ERR));
                                return false;
                        }
                        VideoMonitor.mode = VMODE_16BIT;
                        break;
                case 24:
                case 32:
                        if (format != RGBFB_A8R8G8B8) {
                                ErrorAlert(GetString(STR_WRONG_SCREEN_FORMAT_ERR));
                                return false;
                        }
                        VideoMonitor.mode = VMODE_32BIT;
                        break;
                default:
                        ErrorAlert(GetString(STR_WRONG_SCREEN_DEPTH_ERR));
                        return false;
        }

        // Yes, get width and height
        uint32 width = p96GetModeIDAttr(mode_id, P96IDA_WIDTH);
        uint32 height = p96GetModeIDAttr(mode_id, P96IDA_HEIGHT);
        VideoMonitor.x = width;
        VideoMonitor.y = height;

        // Open screen
        the_screen = p96OpenScreenTags(
                P96SA_DisplayID, mode_id,
                P96SA_Title, GetString(STR_WINDOW_TITLE),
                P96SA_Quiet, TRUE,
                P96SA_NoMemory, TRUE,
                P96SA_NoSprite, TRUE,
                P96SA_Exclusive, TRUE,
                TAG_END
        );
        if (the_screen == NULL) {
                ErrorAlert(GetString(STR_OPEN_SCREEN_ERR));
                return false;
        }

        // Open window
        the_win = OpenWindowTags(NULL,
                WA_Left, 0, WA_Top, 0,
                WA_Width, width, WA_Height, height,
                WA_NoCareRefresh, TRUE,
                WA_Borderless, TRUE,
                WA_Activate, TRUE,
                WA_RMBTrap, TRUE,
                WA_ReportMouse, TRUE,
                WA_CustomScreen, the_screen,
                TAG_END
        );
        if (the_win == NULL) {
                ErrorAlert(GetString(STR_OPEN_WINDOW_ERR));
                return false;
        }

        // Set VideoMonitor
        ScreenToFront(the_screen);
        VideoMonitor.mac_frame_base = p96GetBitMapAttr(the_screen->RastPort.BitMap, P96BMA_MEMORY);
        VideoMonitor.bytes_per_row = p96GetBitMapAttr(the_screen->RastPort.BitMap, P96BMA_BYTESPERROW);
        return true;
}

bool VideoInit(bool classic)
{
        // Read frame skip prefs
        frame_skip = PrefsFindInt32("frameskip");
        if (frame_skip == 0)
                frame_skip = 1;

        // Get screen mode from preferences
        const char *mode_str;
        if (classic)
                mode_str = "win/512/342";
        else
                mode_str = PrefsFindString("screen");

        // Determine type and mode
        display_type = DISPLAY_WINDOW;
        int width = 512, height = 384;
        ULONG mode_id = 0;
        if (mode_str) {
                if (sscanf(mode_str, "win/%d/%d", &width, &height) == 2)
                        display_type = DISPLAY_WINDOW;
                else if (sscanf(mode_str, "pip/%d/%d", &width, &height) == 2 && P96Base)
                        display_type = DISPLAY_PIP;
                else if (sscanf(mode_str, "scr/%08lx", &mode_id) == 1 && P96Base)
                        display_type = DISPLAY_SCREEN;
        }

        // Open display
        switch (display_type) {
                case DISPLAY_WINDOW:
                        if (!init_window(width, height))
                                return false;
                        break;

                case DISPLAY_PIP:
                        if (!init_pip(width, height))
                                return false;
                        break;

                case DISPLAY_SCREEN:
                        if (!init_screen(mode_id))
                                return false;
                        break;
        }

        // Start periodic process
        periodic_proc = CreateNewProcTags(
                NP_Entry, periodic_func,
                NP_Name, "Basilisk II IDCMP Handler",
                NP_Priority, 0,
                TAG_END
        );
        if (periodic_proc == NULL) {
                ErrorAlert(GetString(STR_NO_MEM_ERR));
                return false;
        }
        return true;
}


/*
 *  Deinitialization
 */

void VideoExit(void)
{
        // Stop periodic process
        if (periodic_proc) {
                SetSignal(0, SIGF_SINGLE);
                Signal(&periodic_proc->pr_Task, SIGBREAKF_CTRL_C);
                Wait(SIGF_SINGLE);
        }

        switch (display_type) {

                case DISPLAY_WINDOW:

                        // Window mode, free bitmap
                        if (the_bitmap) {
                                WaitBlit();
                                FreeBitMap(the_bitmap);
                        }

                        // Free pens and close window
                        if (the_win) {
                                ReleasePen(the_win->WScreen->ViewPort.ColorMap, black_pen);
                                ReleasePen(the_win->WScreen->ViewPort.ColorMap, white_pen);

                                CloseWindow(the_win);
                        }
                        break;

                case DISPLAY_PIP:

                        // Close PIP
                        if (the_win)
                                p96PIP_Close(the_win);
                        break;

                case DISPLAY_SCREEN:

                        // Close window
                        if (the_win)
                                CloseWindow(the_win);

                        // Close screen
                        if (the_screen)
                                p96CloseScreen(the_screen);
                        break;
        }
}


/*
 *  Set palette
 */

void video_set_palette(uint8 *pal)
{
        if (display_type == DISPLAY_SCREEN) {

                // Convert palette to 32 bits
                ULONG table[2 + 256 * 3];
                table[0] = 256 << 16;
                table[256 * 3 + 1] = 0;
                for (int i=0; i<256; i++) {
                        table[i*3+1] = pal[i*3] * 0x01010101;
                        table[i*3+2] = pal[i*3+1] * 0x01010101;
                        table[i*3+3] = pal[i*3+2] * 0x01010101;
                }

                // And load it
                LoadRGB32(&the_screen->ViewPort, table);
        }
}


/*
 *  Video message handling (not neccessary under AmigaOS, handled by periodic_func())
 */

void VideoInterrupt(void)
{
}


/*
 *  Process for window refresh and message handling
 */

static __saveds void periodic_func(void)
{
        struct MsgPort *timer_port = NULL;
        struct timerequest *timer_io = NULL;
        struct IntuiMessage *msg;
        ULONG win_mask = 0, timer_mask = 0;

        // Create message port for window and attach it
        struct MsgPort *win_port = CreateMsgPort();
        if (win_port) {
                win_mask = 1 << win_port->mp_SigBit;
                the_win->UserPort = win_port;
                ModifyIDCMP(the_win, IDCMP_MOUSEBUTTONS | IDCMP_MOUSEMOVE | IDCMP_RAWKEY | (display_type == DISPLAY_SCREEN ? IDCMP_DELTAMOVE : 0));
        }

        // Start 60Hz timer for window refresh
        if (display_type == DISPLAY_WINDOW) {
                timer_port = CreateMsgPort();
                if (timer_port) {
                        timer_io = (struct timerequest *)CreateIORequest(timer_port, sizeof(struct timerequest));
                        if (timer_io) {
                                if (!OpenDevice((UBYTE *)TIMERNAME, UNIT_MICROHZ, (struct IORequest *)timer_io, 0)) {
                                        timer_mask = 1 << timer_port->mp_SigBit;
                                        timer_io->tr_node.io_Command = TR_ADDREQUEST;
                                        timer_io->tr_time.tv_secs = 0;
                                        timer_io->tr_time.tv_micro = 16667 * frame_skip;
                                        SendIO((struct IORequest *)timer_io);
                                }
                        }
                }
        }

        // Main loop
        for (;;) {

                // Wait for timer and/or window (CTRL_C is used for quitting the task)
                ULONG sig = Wait(win_mask | timer_mask | SIGBREAKF_CTRL_C);

                if (sig & SIGBREAKF_CTRL_C)
                        break;

                if (sig & timer_mask) {

                        // Timer tick, update display
                        BltTemplate(the_bitmap->Planes[0], 0, the_bitmap->BytesPerRow, the_win->RPort,
                                the_win->BorderLeft, the_win->BorderTop, VideoMonitor.x, VideoMonitor.y);

                        // Restart timer
                        timer_io->tr_node.io_Command = TR_ADDREQUEST;
                        timer_io->tr_time.tv_secs = 0;
                        timer_io->tr_time.tv_micro = 16667 * frame_skip;
                        SendIO((struct IORequest *)timer_io);
                }

                if (sig & win_mask) {

                        // Handle window messages
                        while (msg = (struct IntuiMessage *)GetMsg(win_port)) {

                                // Get data from message and reply
                                ULONG cl = msg->Class;
                                UWORD code = msg->Code;
                                UWORD qualifier = msg->Qualifier;
                                WORD mx = msg->MouseX;
                                WORD my = msg->MouseY;
                                ReplyMsg((struct Message *)msg);

                                // Handle message according to class
                                switch (cl) {
                                        case IDCMP_MOUSEMOVE:
                                                if (display_type == DISPLAY_SCREEN)
                                                        ADBMouseMoved(mx, my);
                                                else
                                                        ADBMouseMoved(mx - the_win->BorderLeft, my - the_win->BorderTop);
                                                break;

                                        case IDCMP_MOUSEBUTTONS:
                                                if (code == SELECTDOWN)
                                                        ADBMouseDown(0);
                                                else if (code == SELECTUP)
                                                        ADBMouseUp(0);
                                                else if (code == MENUDOWN)
                                                        ADBMouseDown(1);
                                                else if (code == MENUUP)
                                                        ADBMouseUp(1);
                                                else if (code == MIDDLEDOWN)
                                                        ADBMouseDown(2);
                                                else if (code == MIDDLEUP)
                                                        ADBMouseUp(2);
                                                break;

                                        case IDCMP_RAWKEY:
                                                if (qualifier & IEQUALIFIER_REPEAT)     // Keyboard repeat is done by MacOS
                                                        break;
                                                if (code & IECODE_UP_PREFIX)
                                                        ADBKeyUp(keycode2mac[code & 0x7f]);
                                                else
                                                        ADBKeyDown(keycode2mac[code & 0x7f]);
                                                break;
                                }
                        }
                }
        }

        // Stop timer
        if (timer_io) {
                if (!CheckIO((struct IORequest *)timer_io))
                        AbortIO((struct IORequest *)timer_io);
                WaitIO((struct IORequest *)timer_io);
                CloseDevice((struct IORequest *)timer_io);
                DeleteIORequest(timer_io);
        }
        if (timer_port)
                DeleteMsgPort(timer_port);

        // Remove port from window and delete it
        Forbid();
        msg = (struct IntuiMessage *)win_port->mp_MsgList.lh_Head;
        struct Node *succ;
        while (succ = msg->ExecMessage.mn_Node.ln_Succ) {
                if (msg->IDCMPWindow == the_win) {
                        Remove((struct Node *)msg);
                        ReplyMsg((struct Message *)msg);
                }
                msg = (struct IntuiMessage *)succ;
        }
        the_win->UserPort = NULL;
        ModifyIDCMP(the_win, 0);
        Permit();
        DeleteMsgPort(win_port);

        // Main task asked for termination, send signal
        Forbid();
        Signal(MainTask, SIGF_SINGLE);
}
Revision:	1.1
Committed:	1999-10-03T14:16:25Z (25 years, 2 months ago) by cebix
Branch:	MAIN
Branch point for:	cebix
Log Message:	Initial revision
#	User	Rev	Content
1	cebix	1.1	/*
2			* video_amiga.cpp - Video/graphics emulation, AmigaOS specific stuff
3			*
4			* Basilisk II (C) 1997-1999 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			#include <exec/types.h>
22			#include <intuition/intuition.h>
23			#include <graphics/rastport.h>
24			#include <graphics/gfx.h>
25			#include <dos/dostags.h>
26			#include <devices/timer.h>
27			#include <proto/exec.h>
28			#include <proto/dos.h>
29			#include <proto/intuition.h>
30			#include <proto/graphics.h>
31			#include <proto/Picasso96.h>
32
33			#include "sysdeps.h"
34			#include "main.h"
35			#include "adb.h"
36			#include "prefs.h"
37			#include "user_strings.h"
38			#include "video.h"
39
40			#define DEBUG 1
41			#include "debug.h"
42
43
44			// Display types
45			enum {
46			DISPLAY_WINDOW,
47			DISPLAY_PIP,
48			DISPLAY_SCREEN
49			};
50
51			// Global variables
52			static int32 frame_skip;
53			static int display_type = DISPLAY_WINDOW; // See enum above
54			static struct Screen *the_screen = NULL;
55			static struct Window *the_win = NULL;
56			static struct BitMap *the_bitmap = NULL;
57			static LONG black_pen = -1, white_pen = -1;
58			static struct Process *periodic_proc = NULL; // Periodic process
59
60			extern struct Task *MainTask; // Pointer to main task (from main_amiga.cpp)
61
62
63			// Amiga -> Mac raw keycode translation table
64			static const uint8 keycode2mac[0x80] = {
65			0x0a, 0x12, 0x13, 0x14, 0x15, 0x17, 0x16, 0x1a, // ` 1 2 3 4 5 6 7
66			0x1c, 0x19, 0x1d, 0x1b, 0x18, 0x2a, 0xff, 0x52, // 8 9 0 - = \ inv 0
67			0x0c, 0x0d, 0x0e, 0x0f, 0x11, 0x10, 0x20, 0x22, // Q W E R T Y U I
68			0x1f, 0x23, 0x21, 0x1e, 0xff, 0x53, 0x54, 0x55, // O P [ ] inv 1 2 3
69			0x00, 0x01, 0x02, 0x03, 0x05, 0x04, 0x26, 0x28, // A S D F G H J K
70			0x25, 0x29, 0x27, 0x2a, 0xff, 0x56, 0x57, 0x58, // L ; ' # inv 4 5 6
71			0x32, 0x06, 0x07, 0x08, 0x09, 0x0b, 0x2d, 0x2e, // < Z X C V B N M
72			0x2b, 0x2f, 0x2c, 0xff, 0x41, 0x59, 0x5b, 0x5c, // , . / inv . 7 8 9
73			0x31, 0x33, 0x30, 0x4c, 0x24, 0x35, 0x75, 0xff, // SPC BSP TAB ENT RET ESC DEL inv
74			0xff, 0xff, 0x4e, 0xff, 0x3e, 0x3d, 0x3c, 0x3b, // inv inv - inv CUP CDN CRT CLF
75			0x7a, 0x78, 0x63, 0x76, 0x60, 0x61, 0x62, 0x64, // F1 F2 F3 F4 F5 F6 F7 F8
76			0x65, 0x6d, 0x47, 0x51, 0x4b, 0x43, 0x45, 0x72, // F9 F10 ( ) / * + HLP
77			0x38, 0x38, 0x39, 0x36, 0x3a, 0x3a, 0x37, 0x37, // SHL SHR CAP CTL ALL ALR AML AMR
78			0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, // inv inv inv inv inv inv inv inv
79			0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, // inv inv inv inv inv inv inv inv
80			0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff // inv inv inv inv inv inv inv inv
81			};
82
83
84			// Prototypes
85			static void periodic_func(void);
86
87
88			/*
89			* Initialization
90			*/
91
92			// Open window
93			static bool init_window(int width, int height)
94			{
95			// Set absolute mouse mode
96			ADBSetRelMouseMode(false);
97
98			// Open window
99			the_win = OpenWindowTags(NULL,
100			WA_Left, 0, WA_Top, 0,
101			WA_InnerWidth, width, WA_InnerHeight, height,
102			WA_SimpleRefresh, TRUE,
103			WA_NoCareRefresh, TRUE,
104			WA_Activate, TRUE,
105			WA_RMBTrap, TRUE,
106			WA_ReportMouse, TRUE,
107			WA_DragBar, TRUE,
108			WA_DepthGadget, TRUE,
109			WA_SizeGadget, FALSE,
110			WA_Title, GetString(STR_WINDOW_TITLE),
111			TAG_END
112			);
113			if (the_win == NULL) {
114			ErrorAlert(GetString(STR_OPEN_WINDOW_ERR));
115			return false;
116			}
117
118			// Create bitmap ("height + 2" for safety)
119			the_bitmap = AllocBitMap(width, height + 2, 1, BMF_CLEAR, NULL);
120			if (the_bitmap == NULL) {
121			ErrorAlert(GetString(STR_NO_MEM_ERR));
122			return false;
123			}
124
125			// Set VideoMonitor
126			VideoMonitor.mac_frame_base = (uint32)the_bitmap->Planes[0];
127			VideoMonitor.bytes_per_row = the_bitmap->BytesPerRow;
128			VideoMonitor.x = width;
129			VideoMonitor.y = height;
130			VideoMonitor.mode = VMODE_1BIT;
131
132			// Set FgPen and BgPen
133			black_pen = ObtainBestPenA(the_win->WScreen->ViewPort.ColorMap, 0, 0, 0, NULL);
134			white_pen = ObtainBestPenA(the_win->WScreen->ViewPort.ColorMap, 0xffffffff, 0xffffffff, 0xffffffff, NULL);
135			SetAPen(the_win->RPort, black_pen);
136			SetBPen(the_win->RPort, white_pen);
137			SetDrMd(the_win->RPort, JAM2);
138			return true;
139			}
140
141			// Open PIP (requires Picasso96)
142			static bool init_pip(int width, int height)
143			{
144			// Set absolute mouse mode
145			ADBSetRelMouseMode(false);
146
147			// Open window
148			ULONG error = 0;
149			the_win = p96PIP_OpenTags(
150			P96PIP_SourceFormat, RGBFB_R5G5B5,
151			P96PIP_SourceWidth, width,
152			P96PIP_SourceHeight, height,
153			P96PIP_ErrorCode, &error,
154			WA_Left, 0, WA_Top, 0,
155			WA_InnerWidth, width, WA_InnerHeight, height,
156			WA_SimpleRefresh, TRUE,
157			WA_NoCareRefresh, TRUE,
158			WA_Activate, TRUE,
159			WA_RMBTrap, TRUE,
160			WA_ReportMouse, TRUE,
161			WA_DragBar, TRUE,
162			WA_DepthGadget, TRUE,
163			WA_SizeGadget, FALSE,
164			WA_Title, GetString(STR_WINDOW_TITLE),
165			WA_PubScreenName, "Workbench",
166			TAG_END
167			);
168			if (the_win == NULL \|\| error) {
169			ErrorAlert(GetString(STR_OPEN_WINDOW_ERR));
170			return false;
171			}
172
173			// Find bitmap
174			p96PIP_GetTags(the_win, P96PIP_SourceBitMap, &the_bitmap, TAG_END);
175
176			// Set VideoMonitor
177			VideoMonitor.mac_frame_base = p96GetBitMapAttr(the_bitmap, P96BMA_MEMORY);
178			VideoMonitor.bytes_per_row = p96GetBitMapAttr(the_bitmap, P96BMA_BYTESPERROW);
179			VideoMonitor.x = width;
180			VideoMonitor.y = height;
181			VideoMonitor.mode = VMODE_16BIT;
182			return true;
183			}
184
185			// Open screen (requires Picasso96 as we need chunky modes)
186			static bool init_screen(ULONG mode_id)
187			{
188			// Set relative mouse mode
189			ADBSetRelMouseMode(true);
190
191			// Check if the mode is a Picasso96 mode
192			if (!p96GetModeIDAttr(mode_id, P96IDA_ISP96)) {
193			ErrorAlert(GetString(STR_NO_P96_MODE_ERR));
194			return false;
195			}
196
197			// Check if the mode is one we can handle
198			uint32 depth = p96GetModeIDAttr(mode_id, P96IDA_DEPTH);
199			uint32 format = p96GetModeIDAttr(mode_id, P96IDA_RGBFORMAT);
200			switch (depth) {
201			case 8:
202			VideoMonitor.mode = VMODE_8BIT;
203			break;
204			case 15:
205			case 16:
206			if (format != RGBFB_R5G5B5) {
207			ErrorAlert(GetString(STR_WRONG_SCREEN_FORMAT_ERR));
208			return false;
209			}
210			VideoMonitor.mode = VMODE_16BIT;
211			break;
212			case 24:
213			case 32:
214			if (format != RGBFB_A8R8G8B8) {
215			ErrorAlert(GetString(STR_WRONG_SCREEN_FORMAT_ERR));
216			return false;
217			}
218			VideoMonitor.mode = VMODE_32BIT;
219			break;
220			default:
221			ErrorAlert(GetString(STR_WRONG_SCREEN_DEPTH_ERR));
222			return false;
223			}
224
225			// Yes, get width and height
226			uint32 width = p96GetModeIDAttr(mode_id, P96IDA_WIDTH);
227			uint32 height = p96GetModeIDAttr(mode_id, P96IDA_HEIGHT);
228			VideoMonitor.x = width;
229			VideoMonitor.y = height;
230
231			// Open screen
232			the_screen = p96OpenScreenTags(
233			P96SA_DisplayID, mode_id,
234			P96SA_Title, GetString(STR_WINDOW_TITLE),
235			P96SA_Quiet, TRUE,
236			P96SA_NoMemory, TRUE,
237			P96SA_NoSprite, TRUE,
238			P96SA_Exclusive, TRUE,
239			TAG_END
240			);
241			if (the_screen == NULL) {
242			ErrorAlert(GetString(STR_OPEN_SCREEN_ERR));
243			return false;
244			}
245
246			// Open window
247			the_win = OpenWindowTags(NULL,
248			WA_Left, 0, WA_Top, 0,
249			WA_Width, width, WA_Height, height,
250			WA_NoCareRefresh, TRUE,
251			WA_Borderless, TRUE,
252			WA_Activate, TRUE,
253			WA_RMBTrap, TRUE,
254			WA_ReportMouse, TRUE,
255			WA_CustomScreen, the_screen,
256			TAG_END
257			);
258			if (the_win == NULL) {
259			ErrorAlert(GetString(STR_OPEN_WINDOW_ERR));
260			return false;
261			}
262
263			// Set VideoMonitor
264			ScreenToFront(the_screen);
265			VideoMonitor.mac_frame_base = p96GetBitMapAttr(the_screen->RastPort.BitMap, P96BMA_MEMORY);
266			VideoMonitor.bytes_per_row = p96GetBitMapAttr(the_screen->RastPort.BitMap, P96BMA_BYTESPERROW);
267			return true;
268			}
269
270			bool VideoInit(bool classic)
271			{
272			// Read frame skip prefs
273			frame_skip = PrefsFindInt32("frameskip");
274			if (frame_skip == 0)
275			frame_skip = 1;
276
277			// Get screen mode from preferences
278			const char *mode_str;
279			if (classic)
280			mode_str = "win/512/342";
281			else
282			mode_str = PrefsFindString("screen");
283
284			// Determine type and mode
285			display_type = DISPLAY_WINDOW;
286			int width = 512, height = 384;
287			ULONG mode_id = 0;
288			if (mode_str) {
289			if (sscanf(mode_str, "win/%d/%d", &width, &height) == 2)
290			display_type = DISPLAY_WINDOW;
291			else if (sscanf(mode_str, "pip/%d/%d", &width, &height) == 2 && P96Base)
292			display_type = DISPLAY_PIP;
293			else if (sscanf(mode_str, "scr/%08lx", &mode_id) == 1 && P96Base)
294			display_type = DISPLAY_SCREEN;
295			}
296
297			// Open display
298			switch (display_type) {
299			case DISPLAY_WINDOW:
300			if (!init_window(width, height))
301			return false;
302			break;
303
304			case DISPLAY_PIP:
305			if (!init_pip(width, height))
306			return false;
307			break;
308
309			case DISPLAY_SCREEN:
310			if (!init_screen(mode_id))
311			return false;
312			break;
313			}
314
315			// Start periodic process
316			periodic_proc = CreateNewProcTags(
317			NP_Entry, periodic_func,
318			NP_Name, "Basilisk II IDCMP Handler",
319			NP_Priority, 0,
320			TAG_END
321			);
322			if (periodic_proc == NULL) {
323			ErrorAlert(GetString(STR_NO_MEM_ERR));
324			return false;
325			}
326			return true;
327			}
328
329
330			/*
331			* Deinitialization
332			*/
333
334			void VideoExit(void)
335			{
336			// Stop periodic process
337			if (periodic_proc) {
338			SetSignal(0, SIGF_SINGLE);
339			Signal(&periodic_proc->pr_Task, SIGBREAKF_CTRL_C);
340			Wait(SIGF_SINGLE);
341			}
342
343			switch (display_type) {
344
345			case DISPLAY_WINDOW:
346
347			// Window mode, free bitmap
348			if (the_bitmap) {
349			WaitBlit();
350			FreeBitMap(the_bitmap);
351			}
352
353			// Free pens and close window
354			if (the_win) {
355			ReleasePen(the_win->WScreen->ViewPort.ColorMap, black_pen);
356			ReleasePen(the_win->WScreen->ViewPort.ColorMap, white_pen);
357
358			CloseWindow(the_win);
359			}
360			break;
361
362			case DISPLAY_PIP:
363
364			// Close PIP
365			if (the_win)
366			p96PIP_Close(the_win);
367			break;
368
369			case DISPLAY_SCREEN:
370
371			// Close window
372			if (the_win)
373			CloseWindow(the_win);
374
375			// Close screen
376			if (the_screen)
377			p96CloseScreen(the_screen);
378			break;
379			}
380			}
381
382
383			/*
384			* Set palette
385			*/
386
387			void video_set_palette(uint8 *pal)
388			{
389			if (display_type == DISPLAY_SCREEN) {
390
391			// Convert palette to 32 bits
392			ULONG table[2 + 256 * 3];
393			table[0] = 256 << 16;
394			table[256 * 3 + 1] = 0;
395			for (int i=0; i<256; i++) {
396			table[i3+1] = pal[i3] * 0x01010101;
397			table[i3+2] = pal[i3+1] * 0x01010101;
398			table[i3+3] = pal[i3+2] * 0x01010101;
399			}
400
401			// And load it
402			LoadRGB32(&the_screen->ViewPort, table);
403			}
404			}
405
406
407			/*
408			* Video message handling (not neccessary under AmigaOS, handled by periodic_func())
409			*/
410
411			void VideoInterrupt(void)
412			{
413			}
414
415
416			/*
417			* Process for window refresh and message handling
418			*/
419
420			static __saveds void periodic_func(void)
421			{
422			struct MsgPort *timer_port = NULL;
423			struct timerequest *timer_io = NULL;
424			struct IntuiMessage *msg;
425			ULONG win_mask = 0, timer_mask = 0;
426
427			// Create message port for window and attach it
428			struct MsgPort *win_port = CreateMsgPort();
429			if (win_port) {
430			win_mask = 1 << win_port->mp_SigBit;
431			the_win->UserPort = win_port;
432			ModifyIDCMP(the_win, IDCMP_MOUSEBUTTONS \| IDCMP_MOUSEMOVE \| IDCMP_RAWKEY \| (display_type == DISPLAY_SCREEN ? IDCMP_DELTAMOVE : 0));
433			}
434
435			// Start 60Hz timer for window refresh
436			if (display_type == DISPLAY_WINDOW) {
437			timer_port = CreateMsgPort();
438			if (timer_port) {
439			timer_io = (struct timerequest *)CreateIORequest(timer_port, sizeof(struct timerequest));
440			if (timer_io) {
441			if (!OpenDevice((UBYTE )TIMERNAME, UNIT_MICROHZ, (struct IORequest )timer_io, 0)) {
442			timer_mask = 1 << timer_port->mp_SigBit;
443			timer_io->tr_node.io_Command = TR_ADDREQUEST;
444			timer_io->tr_time.tv_secs = 0;
445			timer_io->tr_time.tv_micro = 16667 * frame_skip;
446			SendIO((struct IORequest *)timer_io);
447			}
448			}
449			}
450			}
451
452			// Main loop
453			for (;;) {
454
455			// Wait for timer and/or window (CTRL_C is used for quitting the task)
456			ULONG sig = Wait(win_mask \| timer_mask \| SIGBREAKF_CTRL_C);
457
458			if (sig & SIGBREAKF_CTRL_C)
459			break;
460
461			if (sig & timer_mask) {
462
463			// Timer tick, update display
464			BltTemplate(the_bitmap->Planes[0], 0, the_bitmap->BytesPerRow, the_win->RPort,
465			the_win->BorderLeft, the_win->BorderTop, VideoMonitor.x, VideoMonitor.y);
466
467			// Restart timer
468			timer_io->tr_node.io_Command = TR_ADDREQUEST;
469			timer_io->tr_time.tv_secs = 0;
470			timer_io->tr_time.tv_micro = 16667 * frame_skip;
471			SendIO((struct IORequest *)timer_io);
472			}
473
474			if (sig & win_mask) {
475
476			// Handle window messages
477			while (msg = (struct IntuiMessage *)GetMsg(win_port)) {
478
479			// Get data from message and reply
480			ULONG cl = msg->Class;
481			UWORD code = msg->Code;
482			UWORD qualifier = msg->Qualifier;
483			WORD mx = msg->MouseX;
484			WORD my = msg->MouseY;
485			ReplyMsg((struct Message *)msg);
486
487			// Handle message according to class
488			switch (cl) {
489			case IDCMP_MOUSEMOVE:
490			if (display_type == DISPLAY_SCREEN)
491			ADBMouseMoved(mx, my);
492			else
493			ADBMouseMoved(mx - the_win->BorderLeft, my - the_win->BorderTop);
494			break;
495
496			case IDCMP_MOUSEBUTTONS:
497			if (code == SELECTDOWN)
498			ADBMouseDown(0);
499			else if (code == SELECTUP)
500			ADBMouseUp(0);
501			else if (code == MENUDOWN)
502			ADBMouseDown(1);
503			else if (code == MENUUP)
504			ADBMouseUp(1);
505			else if (code == MIDDLEDOWN)
506			ADBMouseDown(2);
507			else if (code == MIDDLEUP)
508			ADBMouseUp(2);
509			break;
510
511			case IDCMP_RAWKEY:
512			if (qualifier & IEQUALIFIER_REPEAT) // Keyboard repeat is done by MacOS
513			break;
514			if (code & IECODE_UP_PREFIX)
515			ADBKeyUp(keycode2mac[code & 0x7f]);
516			else
517			ADBKeyDown(keycode2mac[code & 0x7f]);
518			break;
519			}
520			}
521			}
522			}
523
524			// Stop timer
525			if (timer_io) {
526			if (!CheckIO((struct IORequest *)timer_io))
527			AbortIO((struct IORequest *)timer_io);
528			WaitIO((struct IORequest *)timer_io);
529			CloseDevice((struct IORequest *)timer_io);
530			DeleteIORequest(timer_io);
531			}
532			if (timer_port)
533			DeleteMsgPort(timer_port);
534
535			// Remove port from window and delete it
536			Forbid();
537			msg = (struct IntuiMessage *)win_port->mp_MsgList.lh_Head;
538			struct Node *succ;
539			while (succ = msg->ExecMessage.mn_Node.ln_Succ) {
540			if (msg->IDCMPWindow == the_win) {
541			Remove((struct Node *)msg);
542			ReplyMsg((struct Message *)msg);
543			}
544			msg = (struct IntuiMessage *)succ;
545			}
546			the_win->UserPort = NULL;
547			ModifyIDCMP(the_win, 0);
548			Permit();
549			DeleteMsgPort(win_port);
550
551			// Main task asked for termination, send signal
552			Forbid();
553			Signal(MainTask, SIGF_SINGLE);
554			}