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AmigActive 6
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BasiliskII
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AmigaOS
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video_amiga.cpp
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1999-10-19
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/*
* 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, (ULONG)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, (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(GetString(STR_OPEN_WINDOW_ERR));
return false;
}
// Find bitmap
p96PIP_GetTags(the_win, P96PIP_SourceBitMap, (ULONG)&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, (ULONG)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, (ULONG)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, (ULONG)periodic_func,
NP_Name, (ULONG)"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);
}