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
static int window_width, window_height;         // width and height for window display
static ULONG screen_mode_id;                    // mode ID for screen display

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 bool video_open(const video_mode &mode);
static void video_close();
static void periodic_func(void);
static void add_mode(uint32 width, uint32 height, uint32 resolution_id, uint32 bytes_per_row, video_depth depth);
static void add_modes(uint32 width, uint32 height, video_depth depth);
static ULONG find_mode_for_depth(uint32 width, uint32 height, uint32 depth);
static ULONG bits_from_depth(video_depth depth);
static bool is_valid_modeid(int display_type, ULONG mode_id);
static bool check_modeid_p96(ULONG mode_id);
static bool check_modeid_cgfx(ULONG mode_id);


/*
 *  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, (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
        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);

        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
        if (!check_modeid_p96(mode_id))
                {
                ErrorAlert(STR_WRONG_SCREEN_FORMAT_ERR);
                return false;
                }

        // Yes, get width and height
        uint32 depth = p96GetModeIDAttr(mode_id, P96IDA_DEPTH);
        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_SimpleRefresh, TRUE,
                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
        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
        if (!check_modeid_cgfx(mode_id))
                {
                ErrorAlert(STR_WRONG_SCREEN_FORMAT_ERR);
                return false;
                }

        // Yes, get width and height
        uint32 depth = GetCyberIDAttr(CYBRIDATTR_DEPTH, mode_id);
        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_SimpleRefresh, TRUE,
                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);

        VideoMonitor.mac_frame_base = frame_base;

        return true;
}

bool VideoInit(bool classic)
{
        int default_width, default_height, default_depth;

        // 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;

        default_width = window_width = 512;
        default_height = window_height = 384;

        if (mode_str) {
                if (sscanf(mode_str, "win/%d/%d", &window_width, &window_height) == 2)
                        display_type = DISPLAY_WINDOW;
                else if (sscanf(mode_str, "pip/%d/%d", &window_width, &window_height) == 2 && P96Base)
                        display_type = DISPLAY_PIP;
                else if (sscanf(mode_str, "scr/%08lx", &screen_mode_id) == 1 && (CyberGfxBase || P96Base)) {
                        if (P96Base && p96GetModeIDAttr(screen_mode_id, P96IDA_ISP96))
                                display_type = DISPLAY_SCREEN_P96;
                        else if (CyberGfxBase && IsCyberModeID(screen_mode_id))
                                display_type = DISPLAY_SCREEN_CGFX;
                        else {
                                ErrorAlert(STR_NO_P96_MODE_ERR);
                                return false;
                        }
                }
        }

        // Construct list of supported modes
        switch (display_type) {
                case DISPLAY_WINDOW:
                        default_width = window_width;
                        default_height = window_height;
                        default_depth = 1;
                        add_modes(window_width, window_height, VDEPTH_1BIT);
                        break;

                case DISPLAY_PIP:
                        default_depth = 16;
                        default_width = window_width;
                        default_height = window_height;
                        add_modes(window_width, window_height, VDEPTH_16BIT);
                        break;

                case DISPLAY_SCREEN_P96:
                case DISPLAY_SCREEN_CGFX:
                        struct DimensionInfo dimInfo;
                        DisplayInfoHandle handle = FindDisplayInfo(screen_mode_id);

                        if (NULL == handle)
                                return false;

                        if (GetDisplayInfoData(handle, (UBYTE *) &dimInfo, sizeof(dimInfo), DTAG_DIMS, 0) <= 0)
                                return false;

                        default_width = 1 + dimInfo.Nominal.MaxX - dimInfo.Nominal.MinX;
                        default_height = 1 + dimInfo.Nominal.MaxY - dimInfo.Nominal.MinY;
                        default_depth = dimInfo.MaxDepth;

                        for (unsigned d=VDEPTH_8BIT; d<=VDEPTH_32BIT; d++)
                                {
                                ULONG mode_id = find_mode_for_depth(default_width, default_height, bits_from_depth(video_depth(d)));

                                if (is_valid_modeid(display_type, mode_id))
                                        {
                                        add_modes(default_width, default_height, video_depth(d));
                                        }
                                }
                        break;
        }

        video_init_depth_list();

#if DEBUG
        bug("Available video modes:\n");
        vector<video_mode>::const_iterator i = VideoModes.begin(), end = VideoModes.end();
        while (i != end) {
                bug(" %dx%d (ID %02x), %d colors\n", i->x, i->y, i->resolution_id, 1 << bits_from_depth(i->depth));
                ++i;
        }
#endif

        D(bug("VideoInit: def_width=%ld  def_height=%ld  def_depth=%ld\n", default_width, default_height, default_depth));

        // Find requested default mode and open display
        if (VideoModes.size() == 1)
                return video_open(VideoModes[0]);
        else {
                // Find mode with specified dimensions
                std::vector<video_mode>::const_iterator i, end = VideoModes.end();
                for (i = VideoModes.begin(); i != end; ++i)
                        {
                        D(bug("VideoInit: w=%ld  h=%ld  d=%ld\n", i->x, i->y, bits_from_depth(i->depth)));
                        if (i->x == default_width && i->y == default_height && bits_from_depth(i->depth) == default_depth)
                                return video_open(*i);
                        }
                return video_open(VideoModes[0]);
        }

        return true;
}


static bool video_open(const video_mode &mode)
{
        ULONG depth_bits = bits_from_depth(mode.depth);
        ULONG ID = find_mode_for_depth(mode.x, mode.y, depth_bits);

        D(bug("video_open: width=%ld  height=%ld  depth=%ld  ID=%08lx\n", mode.x, mode.y, depth_bits, ID));

        if (INVALID_ID == ID)
                {
                ErrorAlert(STR_NO_VIDEO_MODE_ERR);
                return false;
                }

        VideoMonitor.mode = mode;

        // Open display
        switch (display_type) {
                case DISPLAY_WINDOW:
                        if (!init_window(mode.x, mode.y))
                                return false;
                        break;

                case DISPLAY_PIP:
                        if (!init_pip(mode.x, mode.y))
                                return false;
                        break;

                case DISPLAY_SCREEN_P96:
                        if (!init_screen_p96(ID))
                                return false;
                        break;

                case DISPLAY_SCREEN_CGFX:
                        if (!init_screen_cgfx(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;
}


static void video_close()
{
        // 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);
                                the_win = NULL;
                        }
                        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);
                                the_win = NULL;
                                }

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

                case DISPLAY_SCREEN_CGFX:

                        // Close window
                        if (the_win)
                                {
                                CloseWindow(the_win);
                                the_win = NULL;
                                }

                        // 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;
        }
}


/*
 *  Deinitialization
 */

void VideoExit(void)
{
        video_close();
}


/*
 *  Set palette
 */

void video_set_palette(uint8 *pal, int 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)
{
        // Close and reopen display
        video_close();
        if (!video_open(mode))
                {
                ErrorAlert(STR_OPEN_WINDOW_ERR);
                QuitEmulator();
                }
}


/*
 *  Close down full-screen mode (if bringing up error alerts is unsafe while in full-screen mode)
 */

void VideoQuitFullScreen(void)
{
}


/*
 *  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);
}


// Add mode to list of supported modes
static void add_mode(uint32 width, uint32 height, uint32 resolution_id, uint32 bytes_per_row, video_depth depth)
{
        video_mode mode;
        mode.x = width;
        mode.y = height;
        mode.resolution_id = resolution_id;
        mode.bytes_per_row = bytes_per_row;
        mode.depth = depth;

        D(bug("Added video mode: w=%ld  h=%ld  d=%ld\n", width, height, depth));

        VideoModes.push_back(mode);
}

// Add standard list of windowed modes for given color depth
static void add_modes(uint32 width, uint32 height, video_depth depth)
{
        D(bug("add_modes: w=%ld  h=%ld  d=%ld\n", width, height, depth));

        if (width >= 512 && height >= 384)
                add_mode(512, 384, 0x80, TrivialBytesPerRow(512, depth), depth);
        if (width >= 640 && height >= 480)
                add_mode(640, 480, 0x81, TrivialBytesPerRow(640, depth), depth);
        if (width >= 800 && height >= 600)
                add_mode(800, 600, 0x82, TrivialBytesPerRow(800, depth), depth);
        if (width >= 1024 && height >= 768)
                add_mode(1024, 768, 0x83, TrivialBytesPerRow(1024, depth), depth);
        if (width >= 1152 && height >= 870)
                add_mode(1152, 870, 0x84, TrivialBytesPerRow(1152, depth), depth);
        if (width >= 1280 && height >= 1024)
                add_mode(1280, 1024, 0x85, TrivialBytesPerRow(1280, depth), depth);
        if (width >= 1600 && height >= 1200)
                add_mode(1600, 1200, 0x86, TrivialBytesPerRow(1600, depth), depth);
}


static ULONG find_mode_for_depth(uint32 width, uint32 height, uint32 depth)
{
        ULONG ID = BestModeID(BIDTAG_NominalWidth, width,
                BIDTAG_NominalHeight, height,
                BIDTAG_Depth, depth,
                BIDTAG_DIPFMustNotHave, DIPF_IS_ECS | DIPF_IS_HAM | DIPF_IS_AA,
                TAG_END);

        return ID;
}


static ULONG bits_from_depth(video_depth depth)
{
        int bits = 1 << depth;
        if (bits == 16)
                bits = 15;
        else if (bits == 32)
                bits = 24;

        return bits;
}


static bool is_valid_modeid(int display_type, ULONG mode_id)
{
        if (INVALID_ID == mode_id)
                return false;

        switch (display_type)
                {
        case DISPLAY_SCREEN_P96:
                return check_modeid_p96(mode_id);
                break;
        case DISPLAY_SCREEN_CGFX:
                return check_modeid_cgfx(mode_id);
                break;
        default:
                return false;
                break;
                }
}


static bool check_modeid_p96(ULONG mode_id)
{
        // Check if the mode is one we can handle
        uint32 depth = p96GetModeIDAttr(mode_id, P96IDA_DEPTH);
        uint32 format = p96GetModeIDAttr(mode_id, P96IDA_RGBFORMAT);

        if (!p96GetModeIDAttr(screen_mode_id, P96IDA_ISP96))
                return false;

        switch (depth) {
                case 8:
                        break;
                case 15:
                case 16:
                        if (format != RGBFB_R5G5B5)
                                return false;
                        break;
                case 24:
                case 32:
                        if (format != RGBFB_A8R8G8B8)
                                return false;
                        break;
                default:
                        return false;
        }

        return true;
}


static bool check_modeid_cgfx(ULONG mode_id)
{
        uint32 depth = GetCyberIDAttr(CYBRIDATTR_DEPTH, mode_id);
        uint32 format = GetCyberIDAttr(CYBRIDATTR_PIXFMT, mode_id);

        D(bug("init_screen_cgfx: mode_id=%08lx  depth=%ld  format=%ld\n", mode_id, depth, format));

        if (!IsCyberModeID(mode_id))
                return false;

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

        return true;
}

Revision:	1.21
Committed:	2001-10-16T17:27:52Z (23 years, 1 month ago) by jlachmann
Branch:	MAIN
Changes since 1.20:	+102 -51 lines
Log Message:	AmigaOS: Improved video mode switching - more strict error checking