263 lines
7.1 KiB
C++
263 lines
7.1 KiB
C++
/*
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* video_screen.h - Full screen video modes
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*
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* SheepShaver (C) 1997-2002 Marc Hellwig and Christian Bauer
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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static bool drawing_enable = false; // This flag indicated if the access to the screen is allowed
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static int page_num; // Index of the currently displayed buffer
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// Blitter functions
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typedef void (*bitblt_ptr)(int32, int32, int32, int32, int32, int32);
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static bitblt_ptr bitblt_hook;
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typedef void (*fillrect8_ptr)(int32, int32, int32, int32, uint8);
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static fillrect8_ptr fillrect8_hook;
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typedef void (*fillrect32_ptr)(int32, int32, int32, int32, uint32);
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static fillrect32_ptr fillrect32_hook;
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typedef void (*invrect_ptr)(int32, int32, int32, int32);
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static invrect_ptr invrect_hook;
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typedef void (*sync_ptr)(void);
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static sync_ptr sync_hook;
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class MacScreen : public BWindowScreen {
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public:
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MacScreen(const char *name, uint32 space);
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virtual ~MacScreen();
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virtual void Quit(void);
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virtual void ScreenConnected(bool active);
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bool palette_changed;
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private:
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static status_t tick_func(void *arg);
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BView *view; // Main view for GetMouse()
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uint8 *frame_backup; // Frame buffer backup when switching from/to different workspace
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bool quitting; // Flag for ScreenConnected: We are quitting, don't pause emulator thread
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bool first; // Flag for ScreenConnected: This is the first time we become active
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thread_id tick_thread;
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bool tick_thread_active;
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};
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// Pointer to our screen
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static MacScreen *the_screen = NULL;
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// Error code from BWindowScreen constructor
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static status_t screen_error;
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// to enable debugger mode.
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#define SCREEN_DEBUG false
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/*
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* Screen constructor
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*/
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MacScreen::MacScreen(const char *name, uint32 space) : BWindowScreen(name, space, &screen_error, SCREEN_DEBUG), tick_thread(-1)
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{
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D(bug("Screen constructor\n"));
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// Set all variables
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frame_backup = NULL;
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palette_changed = false;
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quitting = false;
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first = true;
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drawing_enable = false;
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ADBSetRelMouseMode(true);
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// Create view to poll the mouse
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view = new BView (BRect(0,0,VModes[cur_mode].viXsize-1,VModes[cur_mode].viYsize-1),NULL,B_FOLLOW_NONE,0);
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AddChild(view);
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// Start 60Hz interrupt
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tick_thread_active = true;
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tick_thread = spawn_thread(tick_func, "Polling sucks...", B_DISPLAY_PRIORITY, this);
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RegisterThread(tick_thread);
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resume_thread(tick_thread);
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// Add filter for keyboard and mouse events
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BMessageFilter *filter = new BMessageFilter(B_ANY_DELIVERY, B_ANY_SOURCE, filter_func);
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AddCommonFilter(filter);
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D(bug("Screen constructor done\n"));
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}
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/*
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* Screen destructor
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*/
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MacScreen::~MacScreen()
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{
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D(bug("Screen destructor, quitting tick thread\n"));
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// Stop 60Hz interrupt
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if (tick_thread > 0) {
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status_t l;
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tick_thread_active = false;
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while (wait_for_thread(tick_thread, &l) == B_INTERRUPTED) ;
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}
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D(bug("tick thread quit\n"));
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// Tell the emulator that we're done
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the_screen = NULL;
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D(bug("Screen destructor done\n"));
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}
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/*
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* Screen closed
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*/
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void MacScreen::Quit(void)
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{
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// Tell ScreenConnected() that we are quitting
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quitting = true;
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D(bug("MacScreen::Quit(), disconnecting\n"));
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Disconnect();
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D(bug("disconnected\n"));
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BWindowScreen::Quit();
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}
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/*
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* Screen connected/disconnected
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*/
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void MacScreen::ScreenConnected(bool active)
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{
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D(bug("ScreenConnected(%d)\n", active));
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graphics_card_info *info = CardInfo();
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D(bug(" card_info %p\n", info));
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if (active) {
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// Read graphics parameters
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D(bug(" active\n"));
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screen_base = (uint32)info->frame_buffer;
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D(bug(" screen_base %p\n", screen_base));
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VModes[cur_mode].viRowBytes = info->bytes_per_row;
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D(bug(" xmod %d\n", info->bytes_per_row));
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// Get acceleration functions
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if (PrefsFindBool("gfxaccel")) {
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bitblt_hook = (bitblt_ptr)CardHookAt(7);
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D(bug(" bitblt_hook %p\n", bitblt_hook));
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fillrect8_hook = (fillrect8_ptr)CardHookAt(5);
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D(bug(" fillrect8_hook %p\n", fillrect8_hook));
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fillrect32_hook = (fillrect32_ptr)CardHookAt(6);
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D(bug(" fillrect32_hook %p\n", fillrect32_hook));
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invrect_hook = (invrect_ptr)CardHookAt(11);
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D(bug(" invrect_hook %p\n", invrect_hook));
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sync_hook = (sync_ptr)CardHookAt(10);
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D(bug(" sync_hook %p\n", sync_hook));
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} else {
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bitblt_hook = NULL;
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fillrect8_hook = NULL;
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fillrect32_hook = NULL;
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invrect_hook = NULL;
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sync_hook = NULL;
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}
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// The first time we got the screen, we need to init the Window
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if (first) {
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D(bug(" first time\n"));
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first = false;
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page_num = 0; // current display : page 0
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} else { // we get our screen back
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D(bug(" not first time\n"));
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// copy from backup bitmap to framebuffer
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memcpy((void *)screen_base, frame_backup, VModes[cur_mode].viRowBytes * VModes[cur_mode].viYsize);
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// delete backup bitmap
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delete[] frame_backup;
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frame_backup = NULL;
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// restore palette
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if (info->bits_per_pixel == 8)
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SetColorList(mac_pal);
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// restart emul thread
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release_sem(mac_os_lock);
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}
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// allow the drawing in the frame buffer
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D(bug(" enabling frame buffer access\n"));
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drawing_enable = true;
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video_activated = true;
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} else {
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drawing_enable = false; // stop drawing.
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video_activated = false;
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if (!quitting) {
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// stop emul thread
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acquire_sem(mac_os_lock);
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// create bitmap and store frame buffer into
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frame_backup = new uint8[VModes[cur_mode].viRowBytes * VModes[cur_mode].viYsize];
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memcpy(frame_backup, (void *)screen_base, VModes[cur_mode].viRowBytes * VModes[cur_mode].viYsize);
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}
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}
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D(bug("ScreenConnected() done\n"));
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}
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/*
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* 60Hz interrupt routine
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*/
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status_t MacScreen::tick_func(void *arg)
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{
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MacScreen *obj = (MacScreen *)arg;
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while (obj->tick_thread_active) {
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// Wait
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snooze(16667);
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// Workspace activated? Then poll the mouse and change the palette if needed
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if (video_activated) {
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BPoint pt;
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uint32 button = 0;
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if (obj->LockWithTimeout(200000) == B_OK) {
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if (obj->palette_changed) {
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obj->palette_changed = false;
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obj->SetColorList(mac_pal);
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}
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obj->view->GetMouse(&pt, &button);
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obj->Unlock();
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set_mouse_position(320, 240);
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ADBMouseMoved(int(pt.x) - 320, int(pt.y) - 240);
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if (button & B_PRIMARY_MOUSE_BUTTON)
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ADBMouseDown(0);
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if (!(button & B_PRIMARY_MOUSE_BUTTON))
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ADBMouseUp(0);
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if (button & B_SECONDARY_MOUSE_BUTTON)
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ADBMouseDown(1);
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if (!(button & B_SECONDARY_MOUSE_BUTTON))
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ADBMouseUp(1);
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if (button & B_TERTIARY_MOUSE_BUTTON)
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ADBMouseDown(2);
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if (!(button & B_TERTIARY_MOUSE_BUTTON))
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ADBMouseUp(2);
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}
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}
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}
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return 0;
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}
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