src/AmigaOS/video_amiga.cpp

/*
 *  video_amiga.cpp - Video/graphics emulation, AmigaOS specific stuff
 *
 *  Basilisk II (C) 1997-2001 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 <cybergraphics/cybergraphics.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 <proto/cybergraphics.h>

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

#define DEBUG 0
#include "debug.h"


// Display types
enum {
        DISPLAY_WINDOW,
        DISPLAY_PIP,
        DISPLAY_SCREEN_P96,
        DISPLAY_SCREEN_CGFX
};

// 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 UWORD *null_pointer = NULL;                              // Blank mouse pointer data
static UWORD *current_pointer = (UWORD *)-1;    // Currently visible mouse pointer data
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
 */

// Add resolution to list of supported modes and set VideoMonitor
static void set_video_monitor(uint32 width, uint32 height, uint32 bytes_per_row, int depth)
{
        video_mode mode;

        mode.x = width;
        mode.y = height;
        mode.resolution_id = 0x80;
        mode.bytes_per_row = bytes_per_row;

        switch (depth) {
                case 1:
                        mode.depth = VDEPTH_1BIT;
                        break;
                case 2:
                        mode.depth = VDEPTH_2BIT;
                        break;
                case 4:
                        mode.depth = VDEPTH_4BIT;
                        break;
                case 8:
                        mode.depth = VDEPTH_8BIT;
                        break;
                case 15:
                case 16:
                        mode.depth = VDEPTH_16BIT;
                        break;
                case 24:
                case 32:
                        mode.depth = VDEPTH_32BIT;
                        break;
        }

        VideoModes.push_back(mode);
        VideoMonitor.mode = mode;
}

// 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, (ULONG)GetString(STR_WINDOW_TITLE),
                TAG_END
        );
        if (the_win == NULL) {
                ErrorAlert(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(STR_NO_MEM_ERR);
                return false;
        }

        // Add resolution and set VideoMonitor
        set_video_monitor(width, height, the_bitmap->BytesPerRow, 1);
        VideoMonitor.mac_frame_base = (uint32)the_bitmap->Planes[0];

        // 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, (ULONG)&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, (ULONG)GetString(STR_WINDOW_TITLE),
                WA_PubScreenName, (ULONG)"Workbench",
                TAG_END
        );
        if (the_win == NULL || error) {
                ErrorAlert(STR_OPEN_WINDOW_ERR);
                return false;
        }

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

        // Add resolution and set VideoMonitor
        VideoMonitor.mac_frame_base = p96GetBitMapAttr(the_bitmap, P96BMA_MEMORY);
        set_video_monitor(width, height, p96GetBitMapAttr(the_bitmap, P96BMA_BYTESPERROW), 16);
        return true;
}

// Open Picasso96 screen
static bool init_screen_p96(ULONG mode_id)
{
        // Set relative mouse mode
        ADBSetRelMouseMode(true);

        // 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:
                        break;
                case 15:
                case 16:
                        if (format != RGBFB_R5G5B5) {
                                ErrorAlert(STR_WRONG_SCREEN_FORMAT_ERR);
                                return false;
                        }
                        break;
                case 24:
                case 32:
                        if (format != RGBFB_A8R8G8B8) {
                                ErrorAlert(STR_WRONG_SCREEN_FORMAT_ERR);
                                return false;
                        }
                        break;
                default:
                        ErrorAlert(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);

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

        ScreenToFront(the_screen);

        // Add resolution and set VideoMonitor
        set_video_monitor(width, height, p96GetBitMapAttr(the_screen->RastPort.BitMap, P96BMA_BYTESPERROW), depth);
        VideoMonitor.mac_frame_base = p96GetBitMapAttr(the_screen->RastPort.BitMap, P96BMA_MEMORY);
        return true;
}

// Open CyberGraphX screen
static bool init_screen_cgfx(ULONG mode_id)
{
        // Set relative mouse mode
        ADBSetRelMouseMode(true);

        // Check if the mode is one we can handle
        uint32 depth = GetCyberIDAttr(CYBRIDATTR_DEPTH, mode_id);
        uint32 format = GetCyberIDAttr(CYBRIDATTR_PIXFMT, mode_id);

        switch (depth) {
                case 8:
                        break;
                case 15:
                case 16:
                        // !!! PIXFMT_RGB15 is correct !!!
                        if (format != PIXFMT_RGB15) {
                                ErrorAlert(STR_WRONG_SCREEN_FORMAT_ERR);
                                return false;
                        }
                        break;
                case 24:
                case 32:
                        if (format != PIXFMT_ARGB32) {
                                ErrorAlert(STR_WRONG_SCREEN_FORMAT_ERR);
                                return false;
                        }
                        break;
                default:
                        ErrorAlert(STR_WRONG_SCREEN_DEPTH_ERR);
                        return false;
        }

        // Yes, get width and height
        uint32 width = GetCyberIDAttr(CYBRIDATTR_WIDTH, mode_id);
        uint32 height = GetCyberIDAttr(CYBRIDATTR_HEIGHT, mode_id);

        // Open screen
        the_screen = OpenScreenTags(NULL,
                SA_DisplayID, mode_id,
                SA_Title, (ULONG)GetString(STR_WINDOW_TITLE),
                SA_Quiet, TRUE,
                SA_Exclusive, TRUE,
                TAG_END
        );
        if (the_screen == NULL) {
                ErrorAlert(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, (ULONG)the_screen,
                TAG_END
        );
        if (the_win == NULL) {
                ErrorAlert(STR_OPEN_WINDOW_ERR);
                return false;
        }

        ScreenToFront(the_screen);
        static UWORD ptr[] = { 0, 0, 0, 0 };
        SetPointer(the_win, ptr, 0, 0, 0, 0);   // Hide mouse pointer

        // Set VideoMonitor
        ULONG frame_base;
        APTR handle = LockBitMapTags(the_screen->RastPort.BitMap, 
                LBMI_BASEADDRESS, (ULONG)&frame_base,
                TAG_END
        );
        UnLockBitMap(handle);
        set_video_monitor(width, height, GetCyberMapAttr(the_screen->RastPort.BitMap, CYBRMATTR_XMOD), depth);
        VideoMonitor.mac_frame_base = frame_base;
        return true;
}

bool VideoInit(bool classic)
{
        // Allocate blank mouse pointer data
        null_pointer = (UWORD *)AllocMem(12, MEMF_PUBLIC | MEMF_CHIP | MEMF_CLEAR);
        if (null_pointer == NULL) {
                ErrorAlert(STR_NO_MEM_ERR);
                return false;
        }

        // 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 && (CyberGfxBase || P96Base)) {
                        if (P96Base && p96GetModeIDAttr(mode_id, P96IDA_ISP96))
                                display_type = DISPLAY_SCREEN_P96;
                        else if (CyberGfxBase && IsCyberModeID(mode_id))
                                display_type = DISPLAY_SCREEN_CGFX;
                        else {
                                ErrorAlert(STR_NO_P96_MODE_ERR);
                                return false;
                        }
                }
        }

        // 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_P96:
                        if (!init_screen_p96(mode_id))
                                return false;
                        break;

                case DISPLAY_SCREEN_CGFX:
                        if (!init_screen_cgfx(mode_id))
                                return false;
                        break;
        }

        // Start periodic process
        periodic_proc = CreateNewProcTags(
                NP_Entry, (ULONG)periodic_func,
                NP_Name, (ULONG)"Basilisk II IDCMP Handler",
                NP_Priority, 0,
                TAG_END
        );
        if (periodic_proc == NULL) {
                ErrorAlert(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_P96:

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

                        // Close screen
                        if (the_screen) {
                                p96CloseScreen(the_screen);
                                the_screen = NULL;
                        }
                        break;

                case DISPLAY_SCREEN_CGFX:

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

                        // Close screen
                        if (the_screen) {
                                CloseScreen(the_screen);
                                the_screen = NULL;
                        }
                        break;
        }

        // Free mouse pointer
        if (null_pointer) {
                FreeMem(null_pointer, 12);
                null_pointer = NULL;
        }
}


/*
 *  Set palette
 */

void video_set_palette(uint8 *pal, in num)
{
        if ((display_type == DISPLAY_SCREEN_P96 || display_type == DISPLAY_SCREEN_CGFX)
         && !IsDirectMode(VideoMonitor.mode)) {

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


/*
 *  Switch video mode
 */

void video_switch_to_mode(const video_mode &mode)
{
}


/*
 *  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_P96 || display_type == DISPLAY_SCREEN_CGFX) ? 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.mode.x, VideoMonitor.mode.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_P96 || display_type == DISPLAY_SCREEN_CGFX)
                                                        ADBMouseMoved(mx, my);
                                                else {
                                                        ADBMouseMoved(mx - the_win->BorderLeft, my - the_win->BorderTop);
                                                        if (mx < the_win->BorderLeft
                                                         || my < the_win->BorderTop
                                                         || mx >= the_win->BorderLeft + VideoMonitor.mode.x
                                                         || my >= the_win->BorderTop + VideoMonitor.mode.y) {
                                                                if (current_pointer) {
                                                                        ClearPointer(the_win);
                                                                        current_pointer = NULL;
                                                                }
                                                        } else {
                                                                if (current_pointer != null_pointer) {
                                                                        // Hide mouse pointer inside window
                                                                        SetPointer(the_win, null_pointer, 1, 16, 0, 0);
                                                                        current_pointer = null_pointer;
                                                                }
                                                        }
                                                }
                                                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 ((qualifier & (IEQUALIFIER_LALT | IEQUALIFIER_LSHIFT | IEQUALIFIER_CONTROL)) ==
                                                    (IEQUALIFIER_LALT | IEQUALIFIER_LSHIFT | IEQUALIFIER_CONTROL) && code == 0x5f) {
                                                        SetInterruptFlag(INTFLAG_NMI);
                                                        TriggerInterrupt();
                                                        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:	1.17
Committed:	2001-07-01T21:09:27Z (23 years, 4 months ago) by cebix
Branch:	MAIN
Changes since 1.16:	+4 -4 lines
Log Message:	- video_set_palette() gets passed the number of used palette entries - video_x.cpp supports 2- and 4-bit modes on truecolor screens
#	User	Rev	Content
1	cebix	1.1	/*
2			* video_amiga.cpp - Video/graphics emulation, AmigaOS specific stuff
3			*
4	cebix	1.12	* Basilisk II (C) 1997-2001 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			#include <exec/types.h>
22			#include <intuition/intuition.h>
23			#include <graphics/rastport.h>
24			#include <graphics/gfx.h>
25	cebix	1.7	#include <cybergraphics/cybergraphics.h>
26	cebix	1.1	#include <dos/dostags.h>
27			#include <devices/timer.h>
28			#include <proto/exec.h>
29			#include <proto/dos.h>
30			#include <proto/intuition.h>
31			#include <proto/graphics.h>
32			#include <proto/Picasso96.h>
33	cebix	1.4	#include <proto/cybergraphics.h>
34	cebix	1.1
35			#include "sysdeps.h"
36	jlachmann	1.9	#include "cpu_emulation.h"
37	cebix	1.1	#include "main.h"
38			#include "adb.h"
39			#include "prefs.h"
40			#include "user_strings.h"
41			#include "video.h"
42
43	cebix	1.4	#define DEBUG 0
44	cebix	1.1	#include "debug.h"
45
46
47			// Display types
48			enum {
49			DISPLAY_WINDOW,
50			DISPLAY_PIP,
51	cebix	1.6	DISPLAY_SCREEN_P96,
52			DISPLAY_SCREEN_CGFX
53	cebix	1.1	};
54
55			// Global variables
56			static int32 frame_skip;
57			static int display_type = DISPLAY_WINDOW; // See enum above
58			static struct Screen *the_screen = NULL;
59			static struct Window *the_win = NULL;
60			static struct BitMap *the_bitmap = NULL;
61	cebix	1.8	static UWORD *null_pointer = NULL; // Blank mouse pointer data
62			static UWORD current_pointer = (UWORD )-1; // Currently visible mouse pointer data
63	cebix	1.1	static LONG black_pen = -1, white_pen = -1;
64			static struct Process *periodic_proc = NULL; // Periodic process
65
66			extern struct Task *MainTask; // Pointer to main task (from main_amiga.cpp)
67
68
69			// Amiga -> Mac raw keycode translation table
70			static const uint8 keycode2mac[0x80] = {
71			0x0a, 0x12, 0x13, 0x14, 0x15, 0x17, 0x16, 0x1a, // ` 1 2 3 4 5 6 7
72			0x1c, 0x19, 0x1d, 0x1b, 0x18, 0x2a, 0xff, 0x52, // 8 9 0 - = \ inv 0
73			0x0c, 0x0d, 0x0e, 0x0f, 0x11, 0x10, 0x20, 0x22, // Q W E R T Y U I
74			0x1f, 0x23, 0x21, 0x1e, 0xff, 0x53, 0x54, 0x55, // O P [ ] inv 1 2 3
75			0x00, 0x01, 0x02, 0x03, 0x05, 0x04, 0x26, 0x28, // A S D F G H J K
76			0x25, 0x29, 0x27, 0x2a, 0xff, 0x56, 0x57, 0x58, // L ; ' # inv 4 5 6
77			0x32, 0x06, 0x07, 0x08, 0x09, 0x0b, 0x2d, 0x2e, // < Z X C V B N M
78			0x2b, 0x2f, 0x2c, 0xff, 0x41, 0x59, 0x5b, 0x5c, // , . / inv . 7 8 9
79			0x31, 0x33, 0x30, 0x4c, 0x24, 0x35, 0x75, 0xff, // SPC BSP TAB ENT RET ESC DEL inv
80			0xff, 0xff, 0x4e, 0xff, 0x3e, 0x3d, 0x3c, 0x3b, // inv inv - inv CUP CDN CRT CLF
81			0x7a, 0x78, 0x63, 0x76, 0x60, 0x61, 0x62, 0x64, // F1 F2 F3 F4 F5 F6 F7 F8
82			0x65, 0x6d, 0x47, 0x51, 0x4b, 0x43, 0x45, 0x72, // F9 F10 ( ) / * + HLP
83			0x38, 0x38, 0x39, 0x36, 0x3a, 0x3a, 0x37, 0x37, // SHL SHR CAP CTL ALL ALR AML AMR
84			0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, // inv inv inv inv inv inv inv inv
85			0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, // inv inv inv inv inv inv inv inv
86			0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff // inv inv inv inv inv inv inv inv
87			};
88
89
90			// Prototypes
91			static void periodic_func(void);
92
93
94			/*
95			* Initialization
96			*/
97
98	cebix	1.13	// Add resolution to list of supported modes and set VideoMonitor
99			static void set_video_monitor(uint32 width, uint32 height, uint32 bytes_per_row, int depth)
100			{
101			video_mode mode;
102
103			mode.x = width;
104			mode.y = height;
105			mode.resolution_id = 0x80;
106			mode.bytes_per_row = bytes_per_row;
107
108			switch (depth) {
109			case 1:
110			mode.depth = VDEPTH_1BIT;
111			break;
112			case 2:
113			mode.depth = VDEPTH_2BIT;
114			break;
115			case 4:
116			mode.depth = VDEPTH_4BIT;
117			break;
118			case 8:
119			mode.depth = VDEPTH_8BIT;
120			break;
121			case 15:
122			case 16:
123			mode.depth = VDEPTH_16BIT;
124			break;
125			case 24:
126			case 32:
127			mode.depth = VDEPTH_32BIT;
128			break;
129			}
130
131			VideoModes.push_back(mode);
132			VideoMonitor.mode = mode;
133			}
134
135	cebix	1.1	// Open window
136			static bool init_window(int width, int height)
137			{
138			// Set absolute mouse mode
139			ADBSetRelMouseMode(false);
140
141			// Open window
142			the_win = OpenWindowTags(NULL,
143			WA_Left, 0, WA_Top, 0,
144			WA_InnerWidth, width, WA_InnerHeight, height,
145			WA_SimpleRefresh, TRUE,
146			WA_NoCareRefresh, TRUE,
147			WA_Activate, TRUE,
148			WA_RMBTrap, TRUE,
149			WA_ReportMouse, TRUE,
150			WA_DragBar, TRUE,
151			WA_DepthGadget, TRUE,
152			WA_SizeGadget, FALSE,
153	cebix	1.2	WA_Title, (ULONG)GetString(STR_WINDOW_TITLE),
154	cebix	1.1	TAG_END
155			);
156			if (the_win == NULL) {
157	cebix	1.16	ErrorAlert(STR_OPEN_WINDOW_ERR);
158	cebix	1.1	return false;
159			}
160
161			// Create bitmap ("height + 2" for safety)
162			the_bitmap = AllocBitMap(width, height + 2, 1, BMF_CLEAR, NULL);
163			if (the_bitmap == NULL) {
164	cebix	1.16	ErrorAlert(STR_NO_MEM_ERR);
165	cebix	1.1	return false;
166			}
167
168	cebix	1.13	// Add resolution and set VideoMonitor
169			set_video_monitor(width, height, the_bitmap->BytesPerRow, 1);
170	cebix	1.1	VideoMonitor.mac_frame_base = (uint32)the_bitmap->Planes[0];
171
172			// Set FgPen and BgPen
173			black_pen = ObtainBestPenA(the_win->WScreen->ViewPort.ColorMap, 0, 0, 0, NULL);
174			white_pen = ObtainBestPenA(the_win->WScreen->ViewPort.ColorMap, 0xffffffff, 0xffffffff, 0xffffffff, NULL);
175			SetAPen(the_win->RPort, black_pen);
176			SetBPen(the_win->RPort, white_pen);
177			SetDrMd(the_win->RPort, JAM2);
178			return true;
179			}
180
181			// Open PIP (requires Picasso96)
182			static bool init_pip(int width, int height)
183			{
184			// Set absolute mouse mode
185			ADBSetRelMouseMode(false);
186
187			// Open window
188			ULONG error = 0;
189			the_win = p96PIP_OpenTags(
190			P96PIP_SourceFormat, RGBFB_R5G5B5,
191			P96PIP_SourceWidth, width,
192			P96PIP_SourceHeight, height,
193	cebix	1.2	P96PIP_ErrorCode, (ULONG)&error,
194	cebix	1.1	WA_Left, 0, WA_Top, 0,
195			WA_InnerWidth, width, WA_InnerHeight, height,
196			WA_SimpleRefresh, TRUE,
197			WA_NoCareRefresh, TRUE,
198			WA_Activate, TRUE,
199			WA_RMBTrap, TRUE,
200			WA_ReportMouse, TRUE,
201			WA_DragBar, TRUE,
202			WA_DepthGadget, TRUE,
203			WA_SizeGadget, FALSE,
204	cebix	1.2	WA_Title, (ULONG)GetString(STR_WINDOW_TITLE),
205			WA_PubScreenName, (ULONG)"Workbench",
206	cebix	1.1	TAG_END
207			);
208			if (the_win == NULL \|\| error) {
209	cebix	1.16	ErrorAlert(STR_OPEN_WINDOW_ERR);
210	cebix	1.1	return false;
211			}
212
213			// Find bitmap
214	cebix	1.2	p96PIP_GetTags(the_win, P96PIP_SourceBitMap, (ULONG)&the_bitmap, TAG_END);
215	cebix	1.1
216	cebix	1.13	// Add resolution and set VideoMonitor
217	cebix	1.15	VideoMonitor.mac_frame_base = p96GetBitMapAttr(the_bitmap, P96BMA_MEMORY);
218	cebix	1.13	set_video_monitor(width, height, p96GetBitMapAttr(the_bitmap, P96BMA_BYTESPERROW), 16);
219	cebix	1.1	return true;
220			}
221
222	cebix	1.6	// Open Picasso96 screen
223			static bool init_screen_p96(ULONG mode_id)
224	cebix	1.1	{
225			// Set relative mouse mode
226			ADBSetRelMouseMode(true);
227
228	cebix	1.6	// Check if the mode is one we can handle
229			uint32 depth = p96GetModeIDAttr(mode_id, P96IDA_DEPTH);
230			uint32 format = p96GetModeIDAttr(mode_id, P96IDA_RGBFORMAT);
231
232			switch (depth) {
233			case 8:
234			break;
235			case 15:
236			case 16:
237			if (format != RGBFB_R5G5B5) {
238	cebix	1.16	ErrorAlert(STR_WRONG_SCREEN_FORMAT_ERR);
239	cebix	1.6	return false;
240			}
241			break;
242			case 24:
243			case 32:
244			if (format != RGBFB_A8R8G8B8) {
245	cebix	1.16	ErrorAlert(STR_WRONG_SCREEN_FORMAT_ERR);
246	cebix	1.6	return false;
247			}
248			break;
249			default:
250	cebix	1.16	ErrorAlert(STR_WRONG_SCREEN_DEPTH_ERR);
251	cebix	1.6	return false;
252			}
253
254			// Yes, get width and height
255			uint32 width = p96GetModeIDAttr(mode_id, P96IDA_WIDTH);
256			uint32 height = p96GetModeIDAttr(mode_id, P96IDA_HEIGHT);
257
258			// Open screen
259			the_screen = p96OpenScreenTags(
260			P96SA_DisplayID, mode_id,
261			P96SA_Title, (ULONG)GetString(STR_WINDOW_TITLE),
262			P96SA_Quiet, TRUE,
263			P96SA_NoMemory, TRUE,
264			P96SA_NoSprite, TRUE,
265			P96SA_Exclusive, TRUE,
266			TAG_END
267			);
268			if (the_screen == NULL) {
269	cebix	1.16	ErrorAlert(STR_OPEN_SCREEN_ERR);
270	cebix	1.1	return false;
271			}
272
273	cebix	1.6	// Open window
274			the_win = OpenWindowTags(NULL,
275			WA_Left, 0, WA_Top, 0,
276			WA_Width, width, WA_Height, height,
277			WA_NoCareRefresh, TRUE,
278			WA_Borderless, TRUE,
279			WA_Activate, TRUE,
280			WA_RMBTrap, TRUE,
281			WA_ReportMouse, TRUE,
282			WA_CustomScreen, (ULONG)the_screen,
283			TAG_END
284			);
285			if (the_win == NULL) {
286	cebix	1.16	ErrorAlert(STR_OPEN_WINDOW_ERR);
287	cebix	1.6	return false;
288			}
289
290			ScreenToFront(the_screen);
291	cebix	1.13
292			// Add resolution and set VideoMonitor
293			set_video_monitor(width, height, p96GetBitMapAttr(the_screen->RastPort.BitMap, P96BMA_BYTESPERROW), depth);
294	cebix	1.6	VideoMonitor.mac_frame_base = p96GetBitMapAttr(the_screen->RastPort.BitMap, P96BMA_MEMORY);
295			return true;
296			}
297
298			// Open CyberGraphX screen
299			static bool init_screen_cgfx(ULONG mode_id)
300			{
301			// Set relative mouse mode
302			ADBSetRelMouseMode(true);
303	cebix	1.4
304	cebix	1.1	// Check if the mode is one we can handle
305	cebix	1.6	uint32 depth = GetCyberIDAttr(CYBRIDATTR_DEPTH, mode_id);
306			uint32 format = GetCyberIDAttr(CYBRIDATTR_PIXFMT, mode_id);
307	cebix	1.4
308	cebix	1.1	switch (depth) {
309			case 8:
310			break;
311			case 15:
312			case 16:
313	jlachmann	1.9	// !!! PIXFMT_RGB15 is correct !!!
314			if (format != PIXFMT_RGB15) {
315	cebix	1.16	ErrorAlert(STR_WRONG_SCREEN_FORMAT_ERR);
316	cebix	1.1	return false;
317			}
318			break;
319			case 24:
320			case 32:
321	cebix	1.6	if (format != PIXFMT_ARGB32) {
322	cebix	1.16	ErrorAlert(STR_WRONG_SCREEN_FORMAT_ERR);
323	cebix	1.1	return false;
324			}
325			break;
326			default:
327	cebix	1.16	ErrorAlert(STR_WRONG_SCREEN_DEPTH_ERR);
328	cebix	1.1	return false;
329			}
330
331			// Yes, get width and height
332	cebix	1.6	uint32 width = GetCyberIDAttr(CYBRIDATTR_WIDTH, mode_id);
333			uint32 height = GetCyberIDAttr(CYBRIDATTR_HEIGHT, mode_id);
334	cebix	1.4
335	cebix	1.1	// Open screen
336	cebix	1.6	the_screen = OpenScreenTags(NULL,
337			SA_DisplayID, mode_id,
338			SA_Title, (ULONG)GetString(STR_WINDOW_TITLE),
339			SA_Quiet, TRUE,
340			SA_Exclusive, TRUE,
341			TAG_END
342			);
343	cebix	1.1	if (the_screen == NULL) {
344	cebix	1.16	ErrorAlert(STR_OPEN_SCREEN_ERR);
345	cebix	1.1	return false;
346			}
347
348			// Open window
349			the_win = OpenWindowTags(NULL,
350			WA_Left, 0, WA_Top, 0,
351			WA_Width, width, WA_Height, height,
352			WA_NoCareRefresh, TRUE,
353			WA_Borderless, TRUE,
354			WA_Activate, TRUE,
355			WA_RMBTrap, TRUE,
356			WA_ReportMouse, TRUE,
357	cebix	1.2	WA_CustomScreen, (ULONG)the_screen,
358	cebix	1.1	TAG_END
359			);
360			if (the_win == NULL) {
361	cebix	1.16	ErrorAlert(STR_OPEN_WINDOW_ERR);
362	cebix	1.1	return false;
363			}
364
365			ScreenToFront(the_screen);
366	cebix	1.6	static UWORD ptr[] = { 0, 0, 0, 0 };
367			SetPointer(the_win, ptr, 0, 0, 0, 0); // Hide mouse pointer
368	cebix	1.13
369			// Set VideoMonitor
370			ULONG frame_base;
371	cebix	1.6	APTR handle = LockBitMapTags(the_screen->RastPort.BitMap,
372	cebix	1.13	LBMI_BASEADDRESS, (ULONG)&frame_base,
373			TAG_END
374			);
375	cebix	1.6	UnLockBitMap(handle);
376	cebix	1.13	set_video_monitor(width, height, GetCyberMapAttr(the_screen->RastPort.BitMap, CYBRMATTR_XMOD), depth);
377			VideoMonitor.mac_frame_base = frame_base;
378	cebix	1.1	return true;
379			}
380
381			bool VideoInit(bool classic)
382			{
383	cebix	1.8	// Allocate blank mouse pointer data
384			null_pointer = (UWORD *)AllocMem(12, MEMF_PUBLIC \| MEMF_CHIP \| MEMF_CLEAR);
385			if (null_pointer == NULL) {
386	cebix	1.16	ErrorAlert(STR_NO_MEM_ERR);
387	cebix	1.8	return false;
388			}
389
390	cebix	1.1	// Read frame skip prefs
391			frame_skip = PrefsFindInt32("frameskip");
392			if (frame_skip == 0)
393			frame_skip = 1;
394
395			// Get screen mode from preferences
396			const char *mode_str;
397			if (classic)
398			mode_str = "win/512/342";
399			else
400			mode_str = PrefsFindString("screen");
401
402			// Determine type and mode
403			display_type = DISPLAY_WINDOW;
404			int width = 512, height = 384;
405			ULONG mode_id = 0;
406			if (mode_str) {
407			if (sscanf(mode_str, "win/%d/%d", &width, &height) == 2)
408			display_type = DISPLAY_WINDOW;
409			else if (sscanf(mode_str, "pip/%d/%d", &width, &height) == 2 && P96Base)
410			display_type = DISPLAY_PIP;
411	cebix	1.6	else if (sscanf(mode_str, "scr/%08lx", &mode_id) == 1 && (CyberGfxBase \|\| P96Base)) {
412			if (P96Base && p96GetModeIDAttr(mode_id, P96IDA_ISP96))
413			display_type = DISPLAY_SCREEN_P96;
414			else if (CyberGfxBase && IsCyberModeID(mode_id))
415			display_type = DISPLAY_SCREEN_CGFX;
416			else {
417	cebix	1.16	ErrorAlert(STR_NO_P96_MODE_ERR);
418	cebix	1.6	return false;
419			}
420			}
421	cebix	1.1	}
422
423			// Open display
424			switch (display_type) {
425			case DISPLAY_WINDOW:
426			if (!init_window(width, height))
427			return false;
428			break;
429
430			case DISPLAY_PIP:
431			if (!init_pip(width, height))
432			return false;
433			break;
434
435	cebix	1.6	case DISPLAY_SCREEN_P96:
436			if (!init_screen_p96(mode_id))
437			return false;
438			break;
439
440			case DISPLAY_SCREEN_CGFX:
441			if (!init_screen_cgfx(mode_id))
442	cebix	1.1	return false;
443			break;
444			}
445
446			// Start periodic process
447			periodic_proc = CreateNewProcTags(
448	cebix	1.2	NP_Entry, (ULONG)periodic_func,
449			NP_Name, (ULONG)"Basilisk II IDCMP Handler",
450	cebix	1.1	NP_Priority, 0,
451			TAG_END
452			);
453			if (periodic_proc == NULL) {
454	cebix	1.16	ErrorAlert(STR_NO_MEM_ERR);
455	cebix	1.1	return false;
456			}
457			return true;
458			}
459
460
461			/*
462			* Deinitialization
463			*/
464
465			void VideoExit(void)
466			{
467			// Stop periodic process
468			if (periodic_proc) {
469			SetSignal(0, SIGF_SINGLE);
470			Signal(&periodic_proc->pr_Task, SIGBREAKF_CTRL_C);
471			Wait(SIGF_SINGLE);
472			}
473
474			switch (display_type) {
475
476			case DISPLAY_WINDOW:
477
478			// Window mode, free bitmap
479			if (the_bitmap) {
480			WaitBlit();
481			FreeBitMap(the_bitmap);
482			}
483
484			// Free pens and close window
485			if (the_win) {
486			ReleasePen(the_win->WScreen->ViewPort.ColorMap, black_pen);
487			ReleasePen(the_win->WScreen->ViewPort.ColorMap, white_pen);
488
489			CloseWindow(the_win);
490			}
491			break;
492
493			case DISPLAY_PIP:
494
495			// Close PIP
496			if (the_win)
497			p96PIP_Close(the_win);
498			break;
499
500	cebix	1.6	case DISPLAY_SCREEN_P96:
501	cebix	1.1
502			// Close window
503			if (the_win)
504			CloseWindow(the_win);
505
506			// Close screen
507	cebix	1.4	if (the_screen) {
508	cebix	1.6	p96CloseScreen(the_screen);
509			the_screen = NULL;
510			}
511			break;
512
513			case DISPLAY_SCREEN_CGFX:
514
515			// Close window
516			if (the_win)
517			CloseWindow(the_win);
518	cebix	1.4
519	cebix	1.6	// Close screen
520			if (the_screen) {
521			CloseScreen(the_screen);
522	cebix	1.4	the_screen = NULL;
523			}
524	cebix	1.1	break;
525			}
526	cebix	1.8
527			// Free mouse pointer
528			if (null_pointer) {
529			FreeMem(null_pointer, 12);
530			null_pointer = NULL;
531			}
532	cebix	1.1	}
533
534
535			/*
536			* Set palette
537			*/
538
539	cebix	1.17	void video_set_palette(uint8 *pal, in num)
540	cebix	1.1	{
541	cebix	1.15	if ((display_type == DISPLAY_SCREEN_P96 \|\| display_type == DISPLAY_SCREEN_CGFX)
542			&& !IsDirectMode(VideoMonitor.mode)) {
543	cebix	1.1
544			// Convert palette to 32 bits
545			ULONG table[2 + 256 * 3];
546	cebix	1.17	table[0] = num << 16;
547			table[num * 3 + 1] = 0;
548			for (int i=0; i<num; i++) {
549	cebix	1.1	table[i3+1] = pal[i3] * 0x01010101;
550			table[i3+2] = pal[i3+1] * 0x01010101;
551			table[i3+3] = pal[i3+2] * 0x01010101;
552			}
553
554			// And load it
555			LoadRGB32(&the_screen->ViewPort, table);
556			}
557			}
558
559
560			/*
561	cebix	1.14	* Switch video mode
562			*/
563
564			void video_switch_to_mode(const video_mode &mode)
565			{
566			}
567
568
569			/*
570	cebix	1.1	* Video message handling (not neccessary under AmigaOS, handled by periodic_func())
571			*/
572
573			void VideoInterrupt(void)
574			{
575			}
576
577
578			/*
579			* Process for window refresh and message handling
580			*/
581
582			static __saveds void periodic_func(void)
583			{
584			struct MsgPort *timer_port = NULL;
585			struct timerequest *timer_io = NULL;
586			struct IntuiMessage *msg;
587			ULONG win_mask = 0, timer_mask = 0;
588
589			// Create message port for window and attach it
590			struct MsgPort *win_port = CreateMsgPort();
591			if (win_port) {
592			win_mask = 1 << win_port->mp_SigBit;
593			the_win->UserPort = win_port;
594	cebix	1.6	ModifyIDCMP(the_win, IDCMP_MOUSEBUTTONS \| IDCMP_MOUSEMOVE \| IDCMP_RAWKEY \| ((display_type == DISPLAY_SCREEN_P96 \|\| display_type == DISPLAY_SCREEN_CGFX) ? IDCMP_DELTAMOVE : 0));
595	cebix	1.1	}
596
597			// Start 60Hz timer for window refresh
598			if (display_type == DISPLAY_WINDOW) {
599			timer_port = CreateMsgPort();
600			if (timer_port) {
601			timer_io = (struct timerequest *)CreateIORequest(timer_port, sizeof(struct timerequest));
602			if (timer_io) {
603			if (!OpenDevice((UBYTE )TIMERNAME, UNIT_MICROHZ, (struct IORequest )timer_io, 0)) {
604			timer_mask = 1 << timer_port->mp_SigBit;
605			timer_io->tr_node.io_Command = TR_ADDREQUEST;
606			timer_io->tr_time.tv_secs = 0;
607			timer_io->tr_time.tv_micro = 16667 * frame_skip;
608			SendIO((struct IORequest *)timer_io);
609			}
610			}
611			}
612			}
613
614			// Main loop
615			for (;;) {
616
617			// Wait for timer and/or window (CTRL_C is used for quitting the task)
618			ULONG sig = Wait(win_mask \| timer_mask \| SIGBREAKF_CTRL_C);
619
620			if (sig & SIGBREAKF_CTRL_C)
621			break;
622
623			if (sig & timer_mask) {
624
625			// Timer tick, update display
626			BltTemplate(the_bitmap->Planes[0], 0, the_bitmap->BytesPerRow, the_win->RPort,
627	cebix	1.13	the_win->BorderLeft, the_win->BorderTop, VideoMonitor.mode.x, VideoMonitor.mode.y);
628	cebix	1.1
629			// Restart timer
630			timer_io->tr_node.io_Command = TR_ADDREQUEST;
631			timer_io->tr_time.tv_secs = 0;
632			timer_io->tr_time.tv_micro = 16667 * frame_skip;
633			SendIO((struct IORequest *)timer_io);
634			}
635
636			if (sig & win_mask) {
637
638			// Handle window messages
639			while (msg = (struct IntuiMessage *)GetMsg(win_port)) {
640
641			// Get data from message and reply
642			ULONG cl = msg->Class;
643			UWORD code = msg->Code;
644			UWORD qualifier = msg->Qualifier;
645			WORD mx = msg->MouseX;
646			WORD my = msg->MouseY;
647			ReplyMsg((struct Message *)msg);
648
649			// Handle message according to class
650			switch (cl) {
651			case IDCMP_MOUSEMOVE:
652	cebix	1.7	if (display_type == DISPLAY_SCREEN_P96 \|\| display_type == DISPLAY_SCREEN_CGFX)
653	cebix	1.1	ADBMouseMoved(mx, my);
654	cebix	1.8	else {
655	cebix	1.1	ADBMouseMoved(mx - the_win->BorderLeft, my - the_win->BorderTop);
656	cebix	1.8	if (mx < the_win->BorderLeft
657			\|\| my < the_win->BorderTop
658	cebix	1.13	\|\| mx >= the_win->BorderLeft + VideoMonitor.mode.x
659			\|\| my >= the_win->BorderTop + VideoMonitor.mode.y) {
660	cebix	1.8	if (current_pointer) {
661			ClearPointer(the_win);
662			current_pointer = NULL;
663			}
664			} else {
665			if (current_pointer != null_pointer) {
666			// Hide mouse pointer inside window
667			SetPointer(the_win, null_pointer, 1, 16, 0, 0);
668			current_pointer = null_pointer;
669			}
670			}
671			}
672	cebix	1.1	break;
673
674			case IDCMP_MOUSEBUTTONS:
675			if (code == SELECTDOWN)
676			ADBMouseDown(0);
677			else if (code == SELECTUP)
678			ADBMouseUp(0);
679			else if (code == MENUDOWN)
680			ADBMouseDown(1);
681			else if (code == MENUUP)
682			ADBMouseUp(1);
683			else if (code == MIDDLEDOWN)
684			ADBMouseDown(2);
685			else if (code == MIDDLEUP)
686			ADBMouseUp(2);
687			break;
688
689			case IDCMP_RAWKEY:
690			if (qualifier & IEQUALIFIER_REPEAT) // Keyboard repeat is done by MacOS
691			break;
692	cebix	1.11	if ((qualifier & (IEQUALIFIER_LALT \| IEQUALIFIER_LSHIFT \| IEQUALIFIER_CONTROL)) ==
693			(IEQUALIFIER_LALT \| IEQUALIFIER_LSHIFT \| IEQUALIFIER_CONTROL) && code == 0x5f) {
694	jlachmann	1.9	SetInterruptFlag(INTFLAG_NMI);
695			TriggerInterrupt();
696			break;
697	cebix	1.10	}
698	jlachmann	1.9
699	cebix	1.1	if (code & IECODE_UP_PREFIX)
700			ADBKeyUp(keycode2mac[code & 0x7f]);
701			else
702			ADBKeyDown(keycode2mac[code & 0x7f]);
703			break;
704			}
705			}
706			}
707			}
708
709			// Stop timer
710			if (timer_io) {
711			if (!CheckIO((struct IORequest *)timer_io))
712			AbortIO((struct IORequest *)timer_io);
713			WaitIO((struct IORequest *)timer_io);
714			CloseDevice((struct IORequest *)timer_io);
715			DeleteIORequest(timer_io);
716			}
717			if (timer_port)
718			DeleteMsgPort(timer_port);
719
720			// Remove port from window and delete it
721			Forbid();
722			msg = (struct IntuiMessage *)win_port->mp_MsgList.lh_Head;
723			struct Node *succ;
724			while (succ = msg->ExecMessage.mn_Node.ln_Succ) {
725			if (msg->IDCMPWindow == the_win) {
726			Remove((struct Node *)msg);
727			ReplyMsg((struct Message *)msg);
728			}
729			msg = (struct IntuiMessage *)succ;
730			}
731			the_win->UserPort = NULL;
732			ModifyIDCMP(the_win, 0);
733			Permit();
734			DeleteMsgPort(win_port);
735
736			// Main task asked for termination, send signal
737			Forbid();
738			Signal(MainTask, SIGF_SINGLE);
739			}