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root/cebix/BasiliskII/src/Unix/video_x.cpp
Revision: 1.35
Committed: 2001-01-11T18:00:40Z (23 years, 6 months ago) by gbeauche
Branch: MAIN
Changes since 1.34: +5 -9 lines
Log Message:
- Cleaned up some comments again
- The dirtyPages[] array overrun conditions should be really safe now

File Contents

# Content
1 /*
2 * video_x.cpp - Video/graphics emulation, X11 specific stuff
3 *
4 * Basilisk II (C) 1997-2000 Christian Bauer
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19 */
20
21 /*
22 * NOTES:
23 * The Ctrl key works like a qualifier for special actions:
24 * Ctrl-Tab = suspend DGA mode
25 * Ctrl-Esc = emergency quit
26 * Ctrl-F1 = mount floppy
27 */
28
29 #include "sysdeps.h"
30
31 #include <X11/Xlib.h>
32 #include <X11/Xutil.h>
33 #include <X11/keysym.h>
34 #include <X11/extensions/XShm.h>
35 #include <sys/ipc.h>
36 #include <sys/shm.h>
37 #include <errno.h>
38
39 #ifdef HAVE_PTHREADS
40 # include <pthread.h>
41 #endif
42
43 #ifdef ENABLE_XF86_DGA
44 # include <X11/extensions/xf86dga.h>
45 #endif
46
47 #ifdef ENABLE_XF86_VIDMODE
48 # include <X11/extensions/xf86vmode.h>
49 #endif
50
51 #ifdef ENABLE_FBDEV_DGA
52 # include <sys/mman.h>
53 #endif
54
55 #ifdef ENABLE_VOSF
56 # include <unistd.h>
57 # include <signal.h>
58 # include <fcntl.h>
59 # include <sys/mman.h>
60 #endif
61
62 #include "cpu_emulation.h"
63 #include "main.h"
64 #include "adb.h"
65 #include "macos_util.h"
66 #include "prefs.h"
67 #include "user_strings.h"
68 #include "video.h"
69
70 #define DEBUG 0
71 #include "debug.h"
72
73
74 // Display types
75 enum {
76 DISPLAY_WINDOW, // X11 window, using MIT SHM extensions if possible
77 DISPLAY_DGA // DGA fullscreen display
78 };
79
80 // Constants
81 const char KEYCODE_FILE_NAME[] = DATADIR "/keycodes";
82 const char FBDEVICES_FILE_NAME[] = DATADIR "/fbdevices";
83
84
85 // Global variables
86 static int32 frame_skip; // Prefs items
87 static int16 mouse_wheel_mode = 1;
88 static int16 mouse_wheel_lines = 3;
89
90 static int display_type = DISPLAY_WINDOW; // See enum above
91 static bool local_X11; // Flag: X server running on local machine?
92 static uint8 *the_buffer; // Mac frame buffer
93
94 #ifdef HAVE_PTHREADS
95 static bool redraw_thread_active = false; // Flag: Redraw thread installed
96 static volatile bool redraw_thread_cancel = false; // Flag: Cancel Redraw thread
97 static pthread_t redraw_thread; // Redraw thread
98 #endif
99
100 static bool has_dga = false; // Flag: Video DGA capable
101 static bool has_vidmode = false; // Flag: VidMode extension available
102
103 static bool ctrl_down = false; // Flag: Ctrl key pressed
104 static bool caps_on = false; // Flag: Caps Lock on
105 static bool quit_full_screen = false; // Flag: DGA close requested from redraw thread
106 static bool emerg_quit = false; // Flag: Ctrl-Esc pressed, emergency quit requested from MacOS thread
107 static bool emul_suspended = false; // Flag: Emulator suspended
108
109 static bool classic_mode = false; // Flag: Classic Mac video mode
110
111 static bool use_keycodes = false; // Flag: Use keycodes rather than keysyms
112 static int keycode_table[256]; // X keycode -> Mac keycode translation table
113
114 // X11 variables
115 static int screen; // Screen number
116 static int xdepth; // Depth of X screen
117 static int depth; // Depth of Mac frame buffer
118 static Window rootwin, the_win; // Root window and our window
119 static XVisualInfo visualInfo;
120 static Visual *vis;
121 static Colormap cmap[2]; // Two colormaps (DGA) for 8-bit mode
122 static XColor black, white;
123 static unsigned long black_pixel, white_pixel;
124 static int eventmask;
125 static const int win_eventmask = KeyPressMask | KeyReleaseMask | ButtonPressMask | ButtonReleaseMask | PointerMotionMask | EnterWindowMask | ExposureMask | StructureNotifyMask;
126 static const int dga_eventmask = KeyPressMask | KeyReleaseMask | ButtonPressMask | ButtonReleaseMask | PointerMotionMask | StructureNotifyMask;
127 static Atom WM_DELETE_WINDOW = (Atom)0;
128
129 static XColor palette[256]; // Color palette for 8-bit mode
130 static bool palette_changed = false; // Flag: Palette changed, redraw thread must set new colors
131 #ifdef HAVE_PTHREADS
132 static pthread_mutex_t palette_lock = PTHREAD_MUTEX_INITIALIZER; // Mutex to protect palette
133 #define LOCK_PALETTE pthread_mutex_lock(&palette_lock)
134 #define UNLOCK_PALETTE pthread_mutex_unlock(&palette_lock)
135 #else
136 #define LOCK_PALETTE
137 #define UNLOCK_PALETTE
138 #endif
139
140 // Variables for window mode
141 static GC the_gc;
142 static XImage *img = NULL;
143 static XShmSegmentInfo shminfo;
144 static Cursor mac_cursor;
145 static uint8 *the_buffer_copy = NULL; // Copy of Mac frame buffer
146 static bool have_shm = false; // Flag: SHM extensions available
147 static bool updt_box[17][17]; // Flag for Update
148 static int nr_boxes;
149 static const int sm_uptd[] = {4,1,6,3,0,5,2,7};
150 static int sm_no_boxes[] = {1,8,32,64,128,300};
151
152 // Variables for XF86 DGA mode
153 static int current_dga_cmap; // Number (0 or 1) of currently installed DGA colormap
154 static Window suspend_win; // "Suspend" window
155 static void *fb_save = NULL; // Saved frame buffer for suspend
156 #ifdef HAVE_PTHREADS
157 static pthread_mutex_t frame_buffer_lock = PTHREAD_MUTEX_INITIALIZER; // Mutex to protect frame buffer
158 #define LOCK_FRAME_BUFFER pthread_mutex_lock(&frame_buffer_lock);
159 #define UNLOCK_FRAME_BUFFER pthread_mutex_unlock(&frame_buffer_lock);
160 #else
161 #define LOCK_FRAME_BUFFER
162 #define UNLOCK_FRAME_BUFFER
163 #endif
164
165 // Variables for fbdev DGA mode
166 const char FBDEVICE_FILE_NAME[] = "/dev/fb";
167 static int fbdev_fd;
168
169 #ifdef ENABLE_XF86_VIDMODE
170 // Variables for XF86 VidMode support
171 static XF86VidModeModeInfo **x_video_modes; // Array of all available modes
172 static int num_x_video_modes;
173 #endif
174
175 #ifdef ENABLE_VOSF
176 static bool use_vosf = true; // Flag: VOSF enabled
177 #else
178 static const bool use_vosf = false; // Flag: VOSF enabled
179 #endif
180
181 #ifdef ENABLE_VOSF
182 // Variables for Video on SEGV support (taken from the Win32 port)
183 static uint8 *the_host_buffer; // Host frame buffer in VOSF mode
184 static uint32 the_buffer_size; // Size of allocated the_buffer
185
186 struct ScreenPageInfo {
187 int top, bottom; // Mapping between this virtual page and Mac scanlines
188 };
189
190 struct ScreenInfo {
191 uint32 memBase; // Real start address
192 uint32 memStart; // Start address aligned to page boundary
193 uint32 memEnd; // Address of one-past-the-end of the screen
194 uint32 memLength; // Length of the memory addressed by the screen pages
195
196 uint32 pageSize; // Size of a page
197 int pageBits; // Shift count to get the page number
198 uint32 pageCount; // Number of pages allocated to the screen
199
200 char * dirtyPages; // Table of flags set if page was altered
201 ScreenPageInfo * pageInfo; // Table of mappings page -> Mac scanlines
202 };
203
204 static ScreenInfo mainBuffer;
205
206 #define PFLAG_SET_VALUE 0x00
207 #define PFLAG_CLEAR_VALUE 0x01
208 #define PFLAG_SET_VALUE_4 0x00000000
209 #define PFLAG_CLEAR_VALUE_4 0x01010101
210 #define PFLAG_SET(page) mainBuffer.dirtyPages[page] = PFLAG_SET_VALUE
211 #define PFLAG_CLEAR(page) mainBuffer.dirtyPages[page] = PFLAG_CLEAR_VALUE
212 #define PFLAG_ISSET(page) (mainBuffer.dirtyPages[page] == PFLAG_SET_VALUE)
213 #define PFLAG_ISCLEAR(page) (mainBuffer.dirtyPages[page] != PFLAG_SET_VALUE)
214
215 #ifdef UNALIGNED_PROFITABLE
216 # define PFLAG_ISSET_4(page) (*((uint32 *)(mainBuffer.dirtyPages + (page))) == PFLAG_SET_VALUE_4)
217 # define PFLAG_ISCLEAR_4(page) (*((uint32 *)(mainBuffer.dirtyPages + (page))) == PFLAG_CLEAR_VALUE_4)
218 #else
219 # define PFLAG_ISSET_4(page) \
220 PFLAG_ISSET(page ) && PFLAG_ISSET(page+1) \
221 && PFLAG_ISSET(page+2) && PFLAG_ISSET(page+3)
222 # define PFLAG_ISCLEAR_4(page) \
223 PFLAG_ISCLEAR(page ) && PFLAG_ISCLEAR(page+1) \
224 && PFLAG_ISCLEAR(page+2) && PFLAG_ISCLEAR(page+3)
225 #endif
226
227 // Set the selected page range [ first_page, last_page [ into the SET state
228 #define PFLAG_SET_RANGE(first_page, last_page) \
229 memset(mainBuffer.dirtyPages + (first_page), PFLAG_SET_VALUE, \
230 (last_page) - (first_page))
231
232 // Set the selected page range [ first_page, last_page [ into the CLEAR state
233 #define PFLAG_CLEAR_RANGE(first_page, last_page) \
234 memset(mainBuffer.dirtyPages + (first_page), PFLAG_CLEAR_VALUE, \
235 (last_page) - (first_page))
236
237 #define PFLAG_SET_ALL \
238 PFLAG_SET_RANGE(0, mainBuffer.pageCount)
239
240 #define PFLAG_CLEAR_ALL \
241 PFLAG_CLEAR_RANGE(0, mainBuffer.pageCount)
242
243 // Set the following macro definition to 1 if your system
244 // provides a really fast strchr() implementation
245 //#define HAVE_FAST_STRCHR 0
246
247 static inline int find_next_page_set(int page)
248 {
249 #if HAVE_FAST_STRCHR
250 char *match = strchr(mainBuffer.dirtyPages + page, PFLAG_SET_VALUE);
251 return match ? match - mainBuffer.dirtyPages : mainBuffer.pageCount;
252 #else
253 while (PFLAG_ISCLEAR_4(page))
254 page += 4;
255 while (PFLAG_ISCLEAR(page))
256 page++;
257 return page;
258 #endif
259 }
260
261 static inline int find_next_page_clear(int page)
262 {
263 #if HAVE_FAST_STRCHR
264 char *match = strchr(mainBuffer.dirtyPages + page, PFLAG_CLEAR_VALUE);
265 return match ? match - mainBuffer.dirtyPages : mainBuffer.pageCount;
266 #else
267 while (PFLAG_ISSET_4(page))
268 page += 4;
269 while (PFLAG_ISSET(page))
270 page++;
271 return page;
272 #endif
273 }
274
275 static int zero_fd = -1;
276 static bool Screen_fault_handler_init();
277 static struct sigaction vosf_sa;
278
279 #ifdef HAVE_PTHREADS
280 static pthread_mutex_t vosf_lock = PTHREAD_MUTEX_INITIALIZER; // Mutex to protect frame buffer (dirtyPages in fact)
281 #define LOCK_VOSF pthread_mutex_lock(&vosf_lock);
282 #define UNLOCK_VOSF pthread_mutex_unlock(&vosf_lock);
283 #else
284 #define LOCK_VOSF
285 #define UNLOCK_VOSF
286 #endif
287
288 static int log_base_2(uint32 x)
289 {
290 uint32 mask = 0x80000000;
291 int l = 31;
292 while (l >= 0 && (x & mask) == 0) {
293 mask >>= 1;
294 l--;
295 }
296 return l;
297 }
298 #endif /* ENABLE_VOSF */
299
300 // VideoRefresh function
301 void VideoRefreshInit(void);
302 static void (*video_refresh)(void);
303
304 // Prototypes
305 static void *redraw_func(void *arg);
306 static int event2keycode(XKeyEvent &ev);
307
308
309 // From main_unix.cpp
310 extern char *x_display_name;
311 extern Display *x_display;
312
313 // From sys_unix.cpp
314 extern void SysMountFirstFloppy(void);
315
316 #ifdef ENABLE_VOSF
317 # include "video_vosf.h"
318 #endif
319
320
321 /*
322 * Initialization
323 */
324
325 // Set VideoMonitor according to video mode
326 void set_video_monitor(int width, int height, int bytes_per_row, bool native_byte_order)
327 {
328 #if !REAL_ADDRESSING && !DIRECT_ADDRESSING
329 int layout = FLAYOUT_DIRECT;
330 switch (depth) {
331 case 1:
332 layout = FLAYOUT_DIRECT;
333 break;
334 case 8:
335 layout = FLAYOUT_DIRECT;
336 break;
337 case 15:
338 layout = FLAYOUT_HOST_555;
339 break;
340 case 16:
341 layout = FLAYOUT_HOST_565;
342 break;
343 case 24:
344 case 32:
345 layout = FLAYOUT_HOST_888;
346 break;
347 }
348 if (native_byte_order)
349 MacFrameLayout = layout;
350 else
351 MacFrameLayout = FLAYOUT_DIRECT;
352 #endif
353 switch (depth) {
354 case 1:
355 VideoMonitor.mode = VMODE_1BIT;
356 break;
357 case 8:
358 VideoMonitor.mode = VMODE_8BIT;
359 break;
360 case 15:
361 VideoMonitor.mode = VMODE_16BIT;
362 break;
363 case 16:
364 VideoMonitor.mode = VMODE_16BIT;
365 break;
366 case 24:
367 case 32:
368 VideoMonitor.mode = VMODE_32BIT;
369 break;
370 }
371 VideoMonitor.x = width;
372 VideoMonitor.y = height;
373 VideoMonitor.bytes_per_row = bytes_per_row;
374 }
375
376 // Set window name and class
377 static void set_window_name(Window w, int name)
378 {
379 const char *str = GetString(name);
380 XStoreName(x_display, w, str);
381 XSetIconName(x_display, w, str);
382
383 XClassHint *hints;
384 hints = XAllocClassHint();
385 if (hints) {
386 hints->res_name = "BasiliskII";
387 hints->res_class = "BasiliskII";
388 XSetClassHint(x_display, w, hints);
389 XFree(hints);
390 }
391 }
392
393 // Set window input focus flag
394 static void set_window_focus(Window w)
395 {
396 XWMHints *hints = XAllocWMHints();
397 if (hints) {
398 hints->input = True;
399 hints->initial_state = NormalState;
400 hints->flags = InputHint | StateHint;
401 XSetWMHints(x_display, w, hints);
402 XFree(hints);
403 }
404 }
405
406 // Set WM_DELETE_WINDOW protocol on window (preventing it from being destroyed by the WM when clicking on the "close" widget)
407 static void set_window_delete_protocol(Window w)
408 {
409 WM_DELETE_WINDOW = XInternAtom(x_display, "WM_DELETE_WINDOW", false);
410 XSetWMProtocols(x_display, w, &WM_DELETE_WINDOW, 1);
411 }
412
413 // Wait until window is mapped/unmapped
414 void wait_mapped(Window w)
415 {
416 XEvent e;
417 do {
418 XMaskEvent(x_display, StructureNotifyMask, &e);
419 } while ((e.type != MapNotify) || (e.xmap.event != w));
420 }
421
422 void wait_unmapped(Window w)
423 {
424 XEvent e;
425 do {
426 XMaskEvent(x_display, StructureNotifyMask, &e);
427 } while ((e.type != UnmapNotify) || (e.xmap.event != w));
428 }
429
430 // Trap SHM errors
431 static bool shm_error = false;
432 static int (*old_error_handler)(Display *, XErrorEvent *);
433
434 static int error_handler(Display *d, XErrorEvent *e)
435 {
436 if (e->error_code == BadAccess) {
437 shm_error = true;
438 return 0;
439 } else
440 return old_error_handler(d, e);
441 }
442
443 // Init window mode
444 static bool init_window(int width, int height)
445 {
446 int aligned_width = (width + 15) & ~15;
447 int aligned_height = (height + 15) & ~15;
448
449 // Set absolute mouse mode
450 ADBSetRelMouseMode(false);
451
452 // Read frame skip prefs
453 frame_skip = PrefsFindInt32("frameskip");
454
455 // Create window
456 XSetWindowAttributes wattr;
457 wattr.event_mask = eventmask = win_eventmask;
458 wattr.background_pixel = black_pixel;
459 wattr.colormap = cmap[0];
460
461 the_win = XCreateWindow(x_display, rootwin, 0, 0, width, height, 0, xdepth,
462 InputOutput, vis, CWEventMask | CWBackPixel | (depth == 8 ? CWColormap : 0), &wattr);
463
464 // Set window name/class
465 set_window_name(the_win, STR_WINDOW_TITLE);
466
467 // Indicate that we want keyboard input
468 set_window_focus(the_win);
469
470 // Set delete protocol property
471 set_window_delete_protocol(the_win);
472
473 // Make window unresizable
474 {
475 XSizeHints *hints = XAllocSizeHints();
476 if (hints) {
477 hints->min_width = width;
478 hints->max_width = width;
479 hints->min_height = height;
480 hints->max_height = height;
481 hints->flags = PMinSize | PMaxSize;
482 XSetWMNormalHints(x_display, the_win, hints);
483 XFree(hints);
484 }
485 }
486
487 // Show window
488 XMapWindow(x_display, the_win);
489 wait_mapped(the_win);
490
491 // Try to create and attach SHM image
492 have_shm = false;
493 if (depth != 1 && local_X11 && XShmQueryExtension(x_display)) {
494
495 // Create SHM image ("height + 2" for safety)
496 img = XShmCreateImage(x_display, vis, depth, depth == 1 ? XYBitmap : ZPixmap, 0, &shminfo, width, height);
497 shminfo.shmid = shmget(IPC_PRIVATE, (aligned_height + 2) * img->bytes_per_line, IPC_CREAT | 0777);
498 the_buffer_copy = (uint8 *)shmat(shminfo.shmid, 0, 0);
499 shminfo.shmaddr = img->data = (char *)the_buffer_copy;
500 shminfo.readOnly = False;
501
502 // Try to attach SHM image, catching errors
503 shm_error = false;
504 old_error_handler = XSetErrorHandler(error_handler);
505 XShmAttach(x_display, &shminfo);
506 XSync(x_display, false);
507 XSetErrorHandler(old_error_handler);
508 if (shm_error) {
509 shmdt(shminfo.shmaddr);
510 XDestroyImage(img);
511 shminfo.shmid = -1;
512 } else {
513 have_shm = true;
514 shmctl(shminfo.shmid, IPC_RMID, 0);
515 }
516 }
517
518 // Create normal X image if SHM doesn't work ("height + 2" for safety)
519 if (!have_shm) {
520 int bytes_per_row = aligned_width;
521 switch (depth) {
522 case 1:
523 bytes_per_row /= 8;
524 break;
525 case 15:
526 case 16:
527 bytes_per_row *= 2;
528 break;
529 case 24:
530 case 32:
531 bytes_per_row *= 4;
532 break;
533 }
534 the_buffer_copy = (uint8 *)malloc((aligned_height + 2) * bytes_per_row);
535 img = XCreateImage(x_display, vis, depth, depth == 1 ? XYBitmap : ZPixmap, 0, (char *)the_buffer_copy, aligned_width, aligned_height, 32, bytes_per_row);
536 }
537
538 // 1-Bit mode is big-endian
539 if (depth == 1) {
540 img->byte_order = MSBFirst;
541 img->bitmap_bit_order = MSBFirst;
542 }
543
544 #ifdef ENABLE_VOSF
545 // Allocate a page-aligned chunk of memory for frame buffer
546 the_buffer_size = align_on_page_boundary((aligned_height + 2) * img->bytes_per_line);
547 the_host_buffer = the_buffer_copy;
548
549 the_buffer_copy = (uint8 *)allocate_framebuffer(the_buffer_size);
550 memset(the_buffer_copy, 0, the_buffer_size);
551
552 the_buffer = (uint8 *)allocate_framebuffer(the_buffer_size);
553 memset(the_buffer, 0, the_buffer_size);
554 #else
555 // Allocate memory for frame buffer
556 the_buffer = (uint8 *)malloc((aligned_height + 2) * img->bytes_per_line);
557 #endif
558
559 // Create GC
560 the_gc = XCreateGC(x_display, the_win, 0, 0);
561 XSetState(x_display, the_gc, black_pixel, white_pixel, GXcopy, AllPlanes);
562
563 // Create no_cursor
564 mac_cursor = XCreatePixmapCursor(x_display,
565 XCreatePixmap(x_display, the_win, 1, 1, 1),
566 XCreatePixmap(x_display, the_win, 1, 1, 1),
567 &black, &white, 0, 0);
568 XDefineCursor(x_display, the_win, mac_cursor);
569
570 // Set VideoMonitor
571 bool native_byte_order;
572 #ifdef WORDS_BIGENDIAN
573 native_byte_order = (XImageByteOrder(x_display) == MSBFirst);
574 #else
575 native_byte_order = (XImageByteOrder(x_display) == LSBFirst);
576 #endif
577 #ifdef ENABLE_VOSF
578 do_update_framebuffer = GET_FBCOPY_FUNC(depth, native_byte_order, DISPLAY_WINDOW);
579 #endif
580 set_video_monitor(width, height, img->bytes_per_line, native_byte_order);
581
582 #if REAL_ADDRESSING || DIRECT_ADDRESSING
583 VideoMonitor.mac_frame_base = Host2MacAddr(the_buffer);
584 #else
585 VideoMonitor.mac_frame_base = MacFrameBaseMac;
586 #endif
587 return true;
588 }
589
590 // Init fbdev DGA display
591 static bool init_fbdev_dga(char *in_fb_name)
592 {
593 #ifdef ENABLE_FBDEV_DGA
594 // Find the maximum depth available
595 int ndepths, max_depth(0);
596 int *depths = XListDepths(x_display, screen, &ndepths);
597 if (depths == NULL) {
598 printf("FATAL: Could not determine the maximal depth available\n");
599 return false;
600 } else {
601 while (ndepths-- > 0) {
602 if (depths[ndepths] > max_depth)
603 max_depth = depths[ndepths];
604 }
605 }
606
607 // Get fbdevices file path from preferences
608 const char *fbd_path = PrefsFindString("fbdevicefile");
609
610 // Open fbdevices file
611 FILE *fp = fopen(fbd_path ? fbd_path : FBDEVICES_FILE_NAME, "r");
612 if (fp == NULL) {
613 char str[256];
614 sprintf(str, GetString(STR_NO_FBDEVICE_FILE_ERR), fbd_path ? fbd_path : FBDEVICES_FILE_NAME, strerror(errno));
615 ErrorAlert(str);
616 return false;
617 }
618
619 int fb_depth; // supported depth
620 uint32 fb_offset; // offset used for mmap(2)
621 char fb_name[20];
622 char line[256];
623 bool device_found = false;
624 while (fgets(line, 255, fp)) {
625 // Read line
626 int len = strlen(line);
627 if (len == 0)
628 continue;
629 line[len - 1] = '\0';
630
631 // Comments begin with "#" or ";"
632 if ((line[0] == '#') || (line[0] == ';') || (line[0] == '\0'))
633 continue;
634
635 if ((sscanf(line, "%19s %d %x", &fb_name, &fb_depth, &fb_offset) == 3)
636 && (strcmp(fb_name, in_fb_name) == 0) && (fb_depth == max_depth)) {
637 device_found = true;
638 break;
639 }
640 }
641
642 // fbdevices file completely read
643 fclose(fp);
644
645 // Frame buffer name not found ? Then, display warning
646 if (!device_found) {
647 char str[256];
648 sprintf(str, GetString(STR_FBDEV_NAME_ERR), in_fb_name, max_depth);
649 ErrorAlert(str);
650 return false;
651 }
652
653 int width = DisplayWidth(x_display, screen);
654 int height = DisplayHeight(x_display, screen);
655 depth = fb_depth; // max_depth
656
657 // Set relative mouse mode
658 ADBSetRelMouseMode(false);
659
660 // Create window
661 XSetWindowAttributes wattr;
662 wattr.event_mask = eventmask = dga_eventmask;
663 wattr.background_pixel = white_pixel;
664 wattr.override_redirect = True;
665 wattr.colormap = cmap[0];
666
667 the_win = XCreateWindow(x_display, rootwin,
668 0, 0, width, height,
669 0, xdepth, InputOutput, vis,
670 CWEventMask | CWBackPixel | CWOverrideRedirect | (depth == 8 ? CWColormap : 0),
671 &wattr);
672
673 // Set window name/class
674 set_window_name(the_win, STR_WINDOW_TITLE);
675
676 // Indicate that we want keyboard input
677 set_window_focus(the_win);
678
679 // Show window
680 XMapRaised(x_display, the_win);
681 wait_mapped(the_win);
682
683 // Grab mouse and keyboard
684 XGrabKeyboard(x_display, the_win, True,
685 GrabModeAsync, GrabModeAsync, CurrentTime);
686 XGrabPointer(x_display, the_win, True,
687 PointerMotionMask | ButtonPressMask | ButtonReleaseMask,
688 GrabModeAsync, GrabModeAsync, the_win, None, CurrentTime);
689
690 // Set VideoMonitor
691 int bytes_per_row = width;
692 switch (depth) {
693 case 1:
694 bytes_per_row = ((width | 7) & ~7) >> 3;
695 break;
696 case 15:
697 case 16:
698 bytes_per_row *= 2;
699 break;
700 case 24:
701 case 32:
702 bytes_per_row *= 4;
703 break;
704 }
705
706 if ((the_buffer = (uint8 *) mmap(NULL, height * bytes_per_row, PROT_READ | PROT_WRITE, MAP_PRIVATE, fbdev_fd, fb_offset)) == MAP_FAILED) {
707 if ((the_buffer = (uint8 *) mmap(NULL, height * bytes_per_row, PROT_READ | PROT_WRITE, MAP_SHARED, fbdev_fd, fb_offset)) == MAP_FAILED) {
708 char str[256];
709 sprintf(str, GetString(STR_FBDEV_MMAP_ERR), strerror(errno));
710 ErrorAlert(str);
711 return false;
712 }
713 }
714
715 #if ENABLE_VOSF
716 #if REAL_ADDRESSING || DIRECT_ADDRESSING
717 // If the blit function is null, i.e. just a copy of the buffer,
718 // we first try to avoid the allocation of a temporary frame buffer
719 use_vosf = true;
720 do_update_framebuffer = GET_FBCOPY_FUNC(depth, true, DISPLAY_DGA);
721 if (do_update_framebuffer == FBCOPY_FUNC(fbcopy_raw))
722 use_vosf = false;
723
724 if (use_vosf) {
725 the_host_buffer = the_buffer;
726 the_buffer_size = align_on_page_boundary((height + 2) * bytes_per_row);
727 the_buffer_copy = (uint8 *)malloc(the_buffer_size);
728 memset(the_buffer_copy, 0, the_buffer_size);
729 the_buffer = (uint8 *)allocate_framebuffer(the_buffer_size);
730 memset(the_buffer, 0, the_buffer_size);
731 }
732 #else
733 use_vosf = false;
734 #endif
735 #endif
736
737 set_video_monitor(width, height, bytes_per_row, true);
738 #if REAL_ADDRESSING || DIRECT_ADDRESSING
739 VideoMonitor.mac_frame_base = Host2MacAddr(the_buffer);
740 #else
741 VideoMonitor.mac_frame_base = MacFrameBaseMac;
742 #endif
743 return true;
744 #else
745 ErrorAlert("Basilisk II has been compiled with fbdev DGA support disabled.");
746 return false;
747 #endif
748 }
749
750 // Init XF86 DGA display
751 static bool init_xf86_dga(int width, int height)
752 {
753 #ifdef ENABLE_XF86_DGA
754 // Set relative mouse mode
755 ADBSetRelMouseMode(true);
756
757 #ifdef ENABLE_XF86_VIDMODE
758 // Switch to best mode
759 if (has_vidmode) {
760 int best = 0;
761 for (int i=1; i<num_x_video_modes; i++) {
762 if (x_video_modes[i]->hdisplay >= width && x_video_modes[i]->vdisplay >= height &&
763 x_video_modes[i]->hdisplay <= x_video_modes[best]->hdisplay && x_video_modes[i]->vdisplay <= x_video_modes[best]->vdisplay) {
764 best = i;
765 }
766 }
767 XF86VidModeSwitchToMode(x_display, screen, x_video_modes[best]);
768 XF86VidModeSetViewPort(x_display, screen, 0, 0);
769 XSync(x_display, false);
770 }
771 #endif
772
773 // Create window
774 XSetWindowAttributes wattr;
775 wattr.event_mask = eventmask = dga_eventmask;
776 wattr.override_redirect = True;
777
778 the_win = XCreateWindow(x_display, rootwin, 0, 0, width, height, 0, xdepth,
779 InputOutput, vis, CWEventMask | CWOverrideRedirect, &wattr);
780
781 // Set window name/class
782 set_window_name(the_win, STR_WINDOW_TITLE);
783
784 // Indicate that we want keyboard input
785 set_window_focus(the_win);
786
787 // Show window
788 XMapRaised(x_display, the_win);
789 wait_mapped(the_win);
790
791 // Establish direct screen connection
792 XMoveResizeWindow(x_display, the_win, 0, 0, width, height);
793 XWarpPointer(x_display, None, rootwin, 0, 0, 0, 0, 0, 0);
794 XGrabKeyboard(x_display, rootwin, True, GrabModeAsync, GrabModeAsync, CurrentTime);
795 XGrabPointer(x_display, rootwin, True, PointerMotionMask | ButtonPressMask | ButtonReleaseMask, GrabModeAsync, GrabModeAsync, None, None, CurrentTime);
796
797 int v_width, v_bank, v_size;
798 XF86DGAGetVideo(x_display, screen, (char **)&the_buffer, &v_width, &v_bank, &v_size);
799 XF86DGADirectVideo(x_display, screen, XF86DGADirectGraphics | XF86DGADirectKeyb | XF86DGADirectMouse);
800 XF86DGASetViewPort(x_display, screen, 0, 0);
801 XF86DGASetVidPage(x_display, screen, 0);
802
803 // Set colormap
804 if (depth == 8) {
805 XSetWindowColormap(x_display, the_win, cmap[current_dga_cmap = 0]);
806 XF86DGAInstallColormap(x_display, screen, cmap[current_dga_cmap]);
807 }
808 XSync(x_display, false);
809
810 // Set VideoMonitor
811 int bytes_per_row = (v_width + 7) & ~7;
812 switch (depth) {
813 case 1:
814 bytes_per_row /= 8;
815 break;
816 case 15:
817 case 16:
818 bytes_per_row *= 2;
819 break;
820 case 24:
821 case 32:
822 bytes_per_row *= 4;
823 break;
824 }
825
826 #if REAL_ADDRESSING || DIRECT_ADDRESSING
827 // If the blit function is null, i.e. just a copy of the buffer,
828 // we first try to avoid the allocation of a temporary frame buffer
829 use_vosf = true;
830 do_update_framebuffer = GET_FBCOPY_FUNC(depth, true, DISPLAY_DGA);
831 if (do_update_framebuffer == FBCOPY_FUNC(fbcopy_raw))
832 use_vosf = false;
833
834 if (use_vosf) {
835 the_host_buffer = the_buffer;
836 the_buffer_size = align_on_page_boundary((height + 2) * bytes_per_row);
837 the_buffer_copy = (uint8 *)malloc(the_buffer_size);
838 memset(the_buffer_copy, 0, the_buffer_size);
839 the_buffer = (uint8 *)allocate_framebuffer(the_buffer_size);
840 memset(the_buffer, 0, the_buffer_size);
841 }
842 #elif defined(ENABLE_VOSF)
843 // The UAE memory handlers will already handle color conversion, if needed.
844 use_vosf = false;
845 #endif
846
847 set_video_monitor(width, height, bytes_per_row, true);
848 #if REAL_ADDRESSING || DIRECT_ADDRESSING
849 VideoMonitor.mac_frame_base = Host2MacAddr(the_buffer);
850 // MacFrameLayout = FLAYOUT_DIRECT;
851 #else
852 VideoMonitor.mac_frame_base = MacFrameBaseMac;
853 #endif
854 return true;
855 #else
856 ErrorAlert("Basilisk II has been compiled with XF86 DGA support disabled.");
857 return false;
858 #endif
859 }
860
861 // Init keycode translation table
862 static void keycode_init(void)
863 {
864 bool use_kc = PrefsFindBool("keycodes");
865 if (use_kc) {
866
867 // Get keycode file path from preferences
868 const char *kc_path = PrefsFindString("keycodefile");
869
870 // Open keycode table
871 FILE *f = fopen(kc_path ? kc_path : KEYCODE_FILE_NAME, "r");
872 if (f == NULL) {
873 char str[256];
874 sprintf(str, GetString(STR_KEYCODE_FILE_WARN), kc_path ? kc_path : KEYCODE_FILE_NAME, strerror(errno));
875 WarningAlert(str);
876 return;
877 }
878
879 // Default translation table
880 for (int i=0; i<256; i++)
881 keycode_table[i] = -1;
882
883 // Search for server vendor string, then read keycodes
884 const char *vendor = ServerVendor(x_display);
885 bool vendor_found = false;
886 char line[256];
887 while (fgets(line, 255, f)) {
888 // Read line
889 int len = strlen(line);
890 if (len == 0)
891 continue;
892 line[len-1] = 0;
893
894 // Comments begin with "#" or ";"
895 if (line[0] == '#' || line[0] == ';' || line[0] == 0)
896 continue;
897
898 if (vendor_found) {
899 // Read keycode
900 int x_code, mac_code;
901 if (sscanf(line, "%d %d", &x_code, &mac_code) == 2)
902 keycode_table[x_code & 0xff] = mac_code;
903 else
904 break;
905 } else {
906 // Search for vendor string
907 if (strstr(vendor, line) == vendor)
908 vendor_found = true;
909 }
910 }
911
912 // Keycode file completely read
913 fclose(f);
914 use_keycodes = vendor_found;
915
916 // Vendor not found? Then display warning
917 if (!vendor_found) {
918 char str[256];
919 sprintf(str, GetString(STR_KEYCODE_VENDOR_WARN), vendor, kc_path ? kc_path : KEYCODE_FILE_NAME);
920 WarningAlert(str);
921 return;
922 }
923 }
924 }
925
926 bool VideoInitBuffer()
927 {
928 #ifdef ENABLE_VOSF
929 if (use_vosf) {
930 const uint32 page_size = getpagesize();
931 const uint32 page_mask = page_size - 1;
932
933 mainBuffer.memBase = (uint32) the_buffer;
934 // Align the frame buffer on page boundary
935 mainBuffer.memStart = (uint32)((((unsigned long) the_buffer) + page_mask) & ~page_mask);
936 mainBuffer.memLength = the_buffer_size;
937 mainBuffer.memEnd = mainBuffer.memStart + mainBuffer.memLength;
938
939 mainBuffer.pageSize = page_size;
940 mainBuffer.pageCount = (mainBuffer.memLength + page_mask)/mainBuffer.pageSize;
941 mainBuffer.pageBits = log_base_2(mainBuffer.pageSize);
942
943 if (mainBuffer.dirtyPages != 0)
944 free(mainBuffer.dirtyPages);
945
946 mainBuffer.dirtyPages = (char *) malloc(mainBuffer.pageCount + 2);
947
948 if (mainBuffer.pageInfo != 0)
949 free(mainBuffer.pageInfo);
950
951 mainBuffer.pageInfo = (ScreenPageInfo *) malloc(mainBuffer.pageCount * sizeof(ScreenPageInfo));
952
953 if ((mainBuffer.dirtyPages == 0) || (mainBuffer.pageInfo == 0))
954 return false;
955
956 PFLAG_CLEAR_ALL;
957 // Safety net to insure the loops in the update routines will terminate
958 // See a discussion in <video_vosf.h> for further details
959 PFLAG_CLEAR(mainBuffer.pageCount);
960 PFLAG_SET(mainBuffer.pageCount+1);
961
962 uint32 a = 0;
963 for (int i = 0; i < mainBuffer.pageCount; i++) {
964 int y1 = a / VideoMonitor.bytes_per_row;
965 if (y1 >= VideoMonitor.y)
966 y1 = VideoMonitor.y - 1;
967
968 int y2 = (a + mainBuffer.pageSize) / VideoMonitor.bytes_per_row;
969 if (y2 >= VideoMonitor.y)
970 y2 = VideoMonitor.y - 1;
971
972 mainBuffer.pageInfo[i].top = y1;
973 mainBuffer.pageInfo[i].bottom = y2;
974
975 a += mainBuffer.pageSize;
976 if (a > mainBuffer.memLength)
977 a = mainBuffer.memLength;
978 }
979
980 // We can now write-protect the frame buffer
981 if (mprotect((caddr_t)mainBuffer.memStart, mainBuffer.memLength, PROT_READ) != 0)
982 return false;
983 }
984 #endif
985 return true;
986 }
987
988 bool VideoInit(bool classic)
989 {
990 #ifdef ENABLE_VOSF
991 // Open /dev/zero
992 zero_fd = open("/dev/zero", O_RDWR);
993 if (zero_fd < 0) {
994 char str[256];
995 sprintf(str, GetString(STR_NO_DEV_ZERO_ERR), strerror(errno));
996 ErrorAlert(str);
997 return false;
998 }
999
1000 // Zero the mainBuffer structure
1001 mainBuffer.dirtyPages = 0;
1002 mainBuffer.pageInfo = 0;
1003 #endif
1004
1005 // Check if X server runs on local machine
1006 local_X11 = (strncmp(XDisplayName(x_display_name), ":", 1) == 0)
1007 || (strncmp(XDisplayName(x_display_name), "unix:", 5) == 0);
1008
1009 // Init keycode translation
1010 keycode_init();
1011
1012 // Read prefs
1013 mouse_wheel_mode = PrefsFindInt32("mousewheelmode");
1014 mouse_wheel_lines = PrefsFindInt32("mousewheellines");
1015
1016 // Find screen and root window
1017 screen = XDefaultScreen(x_display);
1018 rootwin = XRootWindow(x_display, screen);
1019
1020 // Get screen depth
1021 xdepth = DefaultDepth(x_display, screen);
1022
1023 #ifdef ENABLE_FBDEV_DGA
1024 // Frame buffer name
1025 char fb_name[20];
1026
1027 // Could do fbdev dga ?
1028 if ((fbdev_fd = open(FBDEVICE_FILE_NAME, O_RDWR)) != -1)
1029 has_dga = true;
1030 else
1031 has_dga = false;
1032 #endif
1033
1034 #ifdef ENABLE_XF86_DGA
1035 // DGA available?
1036 int dga_event_base, dga_error_base;
1037 if (local_X11 && XF86DGAQueryExtension(x_display, &dga_event_base, &dga_error_base)) {
1038 int dga_flags = 0;
1039 XF86DGAQueryDirectVideo(x_display, screen, &dga_flags);
1040 has_dga = dga_flags & XF86DGADirectPresent;
1041 } else
1042 has_dga = false;
1043 #endif
1044
1045 #ifdef ENABLE_XF86_VIDMODE
1046 // VidMode available?
1047 int vm_event_base, vm_error_base;
1048 has_vidmode = XF86VidModeQueryExtension(x_display, &vm_event_base, &vm_error_base);
1049 if (has_vidmode)
1050 XF86VidModeGetAllModeLines(x_display, screen, &num_x_video_modes, &x_video_modes);
1051 #endif
1052
1053 // Find black and white colors
1054 XParseColor(x_display, DefaultColormap(x_display, screen), "rgb:00/00/00", &black);
1055 XAllocColor(x_display, DefaultColormap(x_display, screen), &black);
1056 XParseColor(x_display, DefaultColormap(x_display, screen), "rgb:ff/ff/ff", &white);
1057 XAllocColor(x_display, DefaultColormap(x_display, screen), &white);
1058 black_pixel = BlackPixel(x_display, screen);
1059 white_pixel = WhitePixel(x_display, screen);
1060
1061 // Get appropriate visual
1062 int color_class;
1063 switch (xdepth) {
1064 case 1:
1065 color_class = StaticGray;
1066 break;
1067 case 8:
1068 color_class = PseudoColor;
1069 break;
1070 case 15:
1071 case 16:
1072 case 24:
1073 case 32:
1074 color_class = TrueColor;
1075 break;
1076 default:
1077 ErrorAlert(GetString(STR_UNSUPP_DEPTH_ERR));
1078 return false;
1079 }
1080 if (!XMatchVisualInfo(x_display, screen, xdepth, color_class, &visualInfo)) {
1081 ErrorAlert(GetString(STR_NO_XVISUAL_ERR));
1082 return false;
1083 }
1084 if (visualInfo.depth != xdepth) {
1085 ErrorAlert(GetString(STR_NO_XVISUAL_ERR));
1086 return false;
1087 }
1088 vis = visualInfo.visual;
1089
1090 // Mac screen depth is always 1 bit in Classic mode, but follows X depth otherwise
1091 classic_mode = classic;
1092 if (classic)
1093 depth = 1;
1094 else
1095 depth = xdepth;
1096
1097 // Create color maps for 8 bit mode
1098 if (depth == 8) {
1099 cmap[0] = XCreateColormap(x_display, rootwin, vis, AllocAll);
1100 cmap[1] = XCreateColormap(x_display, rootwin, vis, AllocAll);
1101 XInstallColormap(x_display, cmap[0]);
1102 XInstallColormap(x_display, cmap[1]);
1103 }
1104
1105 // Get screen mode from preferences
1106 const char *mode_str;
1107 if (classic)
1108 mode_str = "win/512/342";
1109 else
1110 mode_str = PrefsFindString("screen");
1111
1112 // Determine type and mode
1113 int width = 512, height = 384;
1114 display_type = DISPLAY_WINDOW;
1115 if (mode_str) {
1116 if (sscanf(mode_str, "win/%d/%d", &width, &height) == 2)
1117 display_type = DISPLAY_WINDOW;
1118 #ifdef ENABLE_FBDEV_DGA
1119 else if (has_dga && sscanf(mode_str, "dga/%19s", fb_name) == 1) {
1120 #else
1121 else if (has_dga && sscanf(mode_str, "dga/%d/%d", &width, &height) == 2) {
1122 #endif
1123 display_type = DISPLAY_DGA;
1124 if (width > DisplayWidth(x_display, screen))
1125 width = DisplayWidth(x_display, screen);
1126 if (height > DisplayHeight(x_display, screen))
1127 height = DisplayHeight(x_display, screen);
1128 }
1129 if (width <= 0)
1130 width = DisplayWidth(x_display, screen);
1131 if (height <= 0)
1132 height = DisplayHeight(x_display, screen);
1133 }
1134
1135 // Initialize according to display type
1136 switch (display_type) {
1137 case DISPLAY_WINDOW:
1138 if (!init_window(width, height))
1139 return false;
1140 break;
1141 case DISPLAY_DGA:
1142 #ifdef ENABLE_FBDEV_DGA
1143 if (!init_fbdev_dga(fb_name))
1144 #else
1145 if (!init_xf86_dga(width, height))
1146 #endif
1147 return false;
1148 break;
1149 }
1150
1151 // Lock down frame buffer
1152 LOCK_FRAME_BUFFER;
1153
1154 #if !REAL_ADDRESSING && !DIRECT_ADDRESSING
1155 // Set variables for UAE memory mapping
1156 MacFrameBaseHost = the_buffer;
1157 MacFrameSize = VideoMonitor.bytes_per_row * VideoMonitor.y;
1158
1159 // No special frame buffer in Classic mode (frame buffer is in Mac RAM)
1160 if (classic)
1161 MacFrameLayout = FLAYOUT_NONE;
1162 #endif
1163
1164 #ifdef ENABLE_VOSF
1165 if (use_vosf) {
1166 // Initialize the mainBuffer structure
1167 if (!VideoInitBuffer()) {
1168 // TODO: STR_VOSF_INIT_ERR ?
1169 ErrorAlert("Could not initialize Video on SEGV signals");
1170 return false;
1171 }
1172
1173 // Initialize the handler for SIGSEGV
1174 if (!Screen_fault_handler_init()) {
1175 // TODO: STR_VOSF_INIT_ERR ?
1176 ErrorAlert("Could not initialize Video on SEGV signals");
1177 return false;
1178 }
1179 }
1180 #endif
1181
1182 // Initialize VideoRefresh function
1183 VideoRefreshInit();
1184
1185 XSync(x_display, false);
1186
1187 #ifdef HAVE_PTHREADS
1188 // Start redraw/input thread
1189 redraw_thread_active = (pthread_create(&redraw_thread, NULL, redraw_func, NULL) == 0);
1190 if (!redraw_thread_active) {
1191 printf("FATAL: cannot create redraw thread\n");
1192 return false;
1193 }
1194 #endif
1195 return true;
1196 }
1197
1198
1199 /*
1200 * Deinitialization
1201 */
1202
1203 void VideoExit(void)
1204 {
1205 #ifdef HAVE_PTHREADS
1206 // Stop redraw thread
1207 if (redraw_thread_active) {
1208 redraw_thread_cancel = true;
1209 #ifdef HAVE_PTHREAD_CANCEL
1210 pthread_cancel(redraw_thread);
1211 #endif
1212 pthread_join(redraw_thread, NULL);
1213 redraw_thread_active = false;
1214 }
1215 #endif
1216
1217 // Unlock frame buffer
1218 UNLOCK_FRAME_BUFFER;
1219
1220 // Close window and server connection
1221 if (x_display != NULL) {
1222 XSync(x_display, false);
1223
1224 #ifdef ENABLE_XF86_DGA
1225 if (display_type == DISPLAY_DGA) {
1226 XF86DGADirectVideo(x_display, screen, 0);
1227 XUngrabPointer(x_display, CurrentTime);
1228 XUngrabKeyboard(x_display, CurrentTime);
1229 }
1230 #endif
1231
1232 #ifdef ENABLE_XF86_VIDMODE
1233 if (has_vidmode && display_type == DISPLAY_DGA)
1234 XF86VidModeSwitchToMode(x_display, screen, x_video_modes[0]);
1235 #endif
1236
1237 #ifdef ENABLE_FBDEV_DGA
1238 if (display_type == DISPLAY_DGA) {
1239 XUngrabPointer(x_display, CurrentTime);
1240 XUngrabKeyboard(x_display, CurrentTime);
1241 close(fbdev_fd);
1242 }
1243 #endif
1244
1245 XFlush(x_display);
1246 XSync(x_display, false);
1247 if (depth == 8) {
1248 XFreeColormap(x_display, cmap[0]);
1249 XFreeColormap(x_display, cmap[1]);
1250 }
1251
1252 if (!use_vosf) {
1253 if (the_buffer) {
1254 free(the_buffer);
1255 the_buffer = NULL;
1256 }
1257
1258 if (!have_shm && the_buffer_copy) {
1259 free(the_buffer_copy);
1260 the_buffer_copy = NULL;
1261 }
1262 }
1263 #ifdef ENABLE_VOSF
1264 else {
1265 if (the_buffer != (uint8 *)MAP_FAILED) {
1266 munmap((caddr_t)the_buffer, the_buffer_size);
1267 the_buffer = 0;
1268 }
1269
1270 if (the_buffer_copy != (uint8 *)MAP_FAILED) {
1271 munmap((caddr_t)the_buffer_copy, the_buffer_size);
1272 the_buffer_copy = 0;
1273 }
1274 }
1275 #endif
1276 }
1277
1278 #ifdef ENABLE_VOSF
1279 if (use_vosf) {
1280 // Clear mainBuffer data
1281 if (mainBuffer.pageInfo) {
1282 free(mainBuffer.pageInfo);
1283 mainBuffer.pageInfo = 0;
1284 }
1285
1286 if (mainBuffer.dirtyPages) {
1287 free(mainBuffer.dirtyPages);
1288 mainBuffer.dirtyPages = 0;
1289 }
1290 }
1291
1292 // Close /dev/zero
1293 if (zero_fd > 0)
1294 close(zero_fd);
1295 #endif
1296 }
1297
1298
1299 /*
1300 * Close down full-screen mode (if bringing up error alerts is unsafe while in full-screen mode)
1301 */
1302
1303 void VideoQuitFullScreen(void)
1304 {
1305 D(bug("VideoQuitFullScreen()\n"));
1306 if (display_type == DISPLAY_DGA)
1307 quit_full_screen = true;
1308 }
1309
1310
1311 /*
1312 * Mac VBL interrupt
1313 */
1314
1315 void VideoInterrupt(void)
1316 {
1317 // Emergency quit requested? Then quit
1318 if (emerg_quit)
1319 QuitEmulator();
1320
1321 // Temporarily give up frame buffer lock (this is the point where
1322 // we are suspended when the user presses Ctrl-Tab)
1323 UNLOCK_FRAME_BUFFER;
1324 LOCK_FRAME_BUFFER;
1325 }
1326
1327
1328 /*
1329 * Set palette
1330 */
1331
1332 void video_set_palette(uint8 *pal)
1333 {
1334 LOCK_PALETTE;
1335
1336 // Convert colors to XColor array
1337 for (int i=0; i<256; i++) {
1338 palette[i].pixel = i;
1339 palette[i].red = pal[i*3] * 0x0101;
1340 palette[i].green = pal[i*3+1] * 0x0101;
1341 palette[i].blue = pal[i*3+2] * 0x0101;
1342 palette[i].flags = DoRed | DoGreen | DoBlue;
1343 }
1344
1345 // Tell redraw thread to change palette
1346 palette_changed = true;
1347
1348 UNLOCK_PALETTE;
1349 }
1350
1351
1352 /*
1353 * Suspend/resume emulator
1354 */
1355
1356 #if defined(ENABLE_XF86_DGA) || defined(ENABLE_FBDEV_DGA)
1357 static void suspend_emul(void)
1358 {
1359 if (display_type == DISPLAY_DGA) {
1360 // Release ctrl key
1361 ADBKeyUp(0x36);
1362 ctrl_down = false;
1363
1364 // Lock frame buffer (this will stop the MacOS thread)
1365 LOCK_FRAME_BUFFER;
1366
1367 // Save frame buffer
1368 fb_save = malloc(VideoMonitor.y * VideoMonitor.bytes_per_row);
1369 if (fb_save)
1370 memcpy(fb_save, the_buffer, VideoMonitor.y * VideoMonitor.bytes_per_row);
1371
1372 // Close full screen display
1373 #ifdef ENABLE_XF86_DGA
1374 XF86DGADirectVideo(x_display, screen, 0);
1375 #endif
1376 XUngrabPointer(x_display, CurrentTime);
1377 XUngrabKeyboard(x_display, CurrentTime);
1378 XUnmapWindow(x_display, the_win);
1379 wait_unmapped(the_win);
1380
1381 // Open "suspend" window
1382 XSetWindowAttributes wattr;
1383 wattr.event_mask = KeyPressMask;
1384 wattr.background_pixel = black_pixel;
1385
1386 suspend_win = XCreateWindow(x_display, rootwin, 0, 0, 512, 1, 0, xdepth,
1387 InputOutput, vis, CWEventMask | CWBackPixel, &wattr);
1388 set_window_name(suspend_win, STR_SUSPEND_WINDOW_TITLE);
1389 set_window_focus(suspend_win);
1390 XMapWindow(x_display, suspend_win);
1391 emul_suspended = true;
1392 }
1393 }
1394
1395 static void resume_emul(void)
1396 {
1397 // Close "suspend" window
1398 XDestroyWindow(x_display, suspend_win);
1399 XSync(x_display, false);
1400
1401 // Reopen full screen display
1402 XMapRaised(x_display, the_win);
1403 wait_mapped(the_win);
1404 XWarpPointer(x_display, None, rootwin, 0, 0, 0, 0, 0, 0);
1405 XGrabKeyboard(x_display, rootwin, 1, GrabModeAsync, GrabModeAsync, CurrentTime);
1406 XGrabPointer(x_display, rootwin, 1, PointerMotionMask | ButtonPressMask | ButtonReleaseMask, GrabModeAsync, GrabModeAsync, None, None, CurrentTime);
1407 #ifdef ENABLE_XF86_DGA
1408 XF86DGADirectVideo(x_display, screen, XF86DGADirectGraphics | XF86DGADirectKeyb | XF86DGADirectMouse);
1409 XF86DGASetViewPort(x_display, screen, 0, 0);
1410 #endif
1411 XSync(x_display, false);
1412
1413 // the_buffer already contains the data to restore. i.e. since a temporary
1414 // frame buffer is used when VOSF is actually used, fb_save is therefore
1415 // not necessary.
1416 #ifdef ENABLE_VOSF
1417 if (use_vosf) {
1418 LOCK_VOSF;
1419 PFLAG_SET_ALL;
1420 UNLOCK_VOSF;
1421 memset(the_buffer_copy, 0, VideoMonitor.bytes_per_row * VideoMonitor.y);
1422 }
1423 #endif
1424
1425 // Restore frame buffer
1426 if (fb_save) {
1427 #ifdef ENABLE_VOSF
1428 // Don't copy fb_save to the temporary frame buffer in VOSF mode
1429 if (!use_vosf)
1430 #endif
1431 memcpy(the_buffer, fb_save, VideoMonitor.y * VideoMonitor.bytes_per_row);
1432 free(fb_save);
1433 fb_save = NULL;
1434 }
1435
1436 #ifdef ENABLE_XF86_DGA
1437 if (depth == 8)
1438 XF86DGAInstallColormap(x_display, screen, cmap[current_dga_cmap]);
1439 #endif
1440
1441 // Unlock frame buffer (and continue MacOS thread)
1442 UNLOCK_FRAME_BUFFER;
1443 emul_suspended = false;
1444 }
1445 #endif
1446
1447
1448 /*
1449 * Translate key event to Mac keycode
1450 */
1451
1452 static int kc_decode(KeySym ks)
1453 {
1454 switch (ks) {
1455 case XK_A: case XK_a: return 0x00;
1456 case XK_B: case XK_b: return 0x0b;
1457 case XK_C: case XK_c: return 0x08;
1458 case XK_D: case XK_d: return 0x02;
1459 case XK_E: case XK_e: return 0x0e;
1460 case XK_F: case XK_f: return 0x03;
1461 case XK_G: case XK_g: return 0x05;
1462 case XK_H: case XK_h: return 0x04;
1463 case XK_I: case XK_i: return 0x22;
1464 case XK_J: case XK_j: return 0x26;
1465 case XK_K: case XK_k: return 0x28;
1466 case XK_L: case XK_l: return 0x25;
1467 case XK_M: case XK_m: return 0x2e;
1468 case XK_N: case XK_n: return 0x2d;
1469 case XK_O: case XK_o: return 0x1f;
1470 case XK_P: case XK_p: return 0x23;
1471 case XK_Q: case XK_q: return 0x0c;
1472 case XK_R: case XK_r: return 0x0f;
1473 case XK_S: case XK_s: return 0x01;
1474 case XK_T: case XK_t: return 0x11;
1475 case XK_U: case XK_u: return 0x20;
1476 case XK_V: case XK_v: return 0x09;
1477 case XK_W: case XK_w: return 0x0d;
1478 case XK_X: case XK_x: return 0x07;
1479 case XK_Y: case XK_y: return 0x10;
1480 case XK_Z: case XK_z: return 0x06;
1481
1482 case XK_1: case XK_exclam: return 0x12;
1483 case XK_2: case XK_at: return 0x13;
1484 case XK_3: case XK_numbersign: return 0x14;
1485 case XK_4: case XK_dollar: return 0x15;
1486 case XK_5: case XK_percent: return 0x17;
1487 case XK_6: return 0x16;
1488 case XK_7: return 0x1a;
1489 case XK_8: return 0x1c;
1490 case XK_9: return 0x19;
1491 case XK_0: return 0x1d;
1492
1493 case XK_grave: case XK_asciitilde: return 0x0a;
1494 case XK_minus: case XK_underscore: return 0x1b;
1495 case XK_equal: case XK_plus: return 0x18;
1496 case XK_bracketleft: case XK_braceleft: return 0x21;
1497 case XK_bracketright: case XK_braceright: return 0x1e;
1498 case XK_backslash: case XK_bar: return 0x2a;
1499 case XK_semicolon: case XK_colon: return 0x29;
1500 case XK_apostrophe: case XK_quotedbl: return 0x27;
1501 case XK_comma: case XK_less: return 0x2b;
1502 case XK_period: case XK_greater: return 0x2f;
1503 case XK_slash: case XK_question: return 0x2c;
1504
1505 #if defined(ENABLE_XF86_DGA) || defined(ENABLE_FBDEV_DGA)
1506 case XK_Tab: if (ctrl_down) {suspend_emul(); return -1;} else return 0x30;
1507 #else
1508 case XK_Tab: return 0x30;
1509 #endif
1510 case XK_Return: return 0x24;
1511 case XK_space: return 0x31;
1512 case XK_BackSpace: return 0x33;
1513
1514 case XK_Delete: return 0x75;
1515 case XK_Insert: return 0x72;
1516 case XK_Home: case XK_Help: return 0x73;
1517 case XK_End: return 0x77;
1518 #ifdef __hpux
1519 case XK_Prior: return 0x74;
1520 case XK_Next: return 0x79;
1521 #else
1522 case XK_Page_Up: return 0x74;
1523 case XK_Page_Down: return 0x79;
1524 #endif
1525
1526 case XK_Control_L: return 0x36;
1527 case XK_Control_R: return 0x36;
1528 case XK_Shift_L: return 0x38;
1529 case XK_Shift_R: return 0x38;
1530 case XK_Alt_L: return 0x37;
1531 case XK_Alt_R: return 0x37;
1532 case XK_Meta_L: return 0x3a;
1533 case XK_Meta_R: return 0x3a;
1534 case XK_Menu: return 0x32;
1535 case XK_Caps_Lock: return 0x39;
1536 case XK_Num_Lock: return 0x47;
1537
1538 case XK_Up: return 0x3e;
1539 case XK_Down: return 0x3d;
1540 case XK_Left: return 0x3b;
1541 case XK_Right: return 0x3c;
1542
1543 case XK_Escape: if (ctrl_down) {quit_full_screen = true; emerg_quit = true; return -1;} else return 0x35;
1544
1545 case XK_F1: if (ctrl_down) {SysMountFirstFloppy(); return -1;} else return 0x7a;
1546 case XK_F2: return 0x78;
1547 case XK_F3: return 0x63;
1548 case XK_F4: return 0x76;
1549 case XK_F5: return 0x60;
1550 case XK_F6: return 0x61;
1551 case XK_F7: return 0x62;
1552 case XK_F8: return 0x64;
1553 case XK_F9: return 0x65;
1554 case XK_F10: return 0x6d;
1555 case XK_F11: return 0x67;
1556 case XK_F12: return 0x6f;
1557
1558 case XK_Print: return 0x69;
1559 case XK_Scroll_Lock: return 0x6b;
1560 case XK_Pause: return 0x71;
1561
1562 #if defined(XK_KP_Prior) && defined(XK_KP_Left) && defined(XK_KP_Insert) && defined (XK_KP_End)
1563 case XK_KP_0: case XK_KP_Insert: return 0x52;
1564 case XK_KP_1: case XK_KP_End: return 0x53;
1565 case XK_KP_2: case XK_KP_Down: return 0x54;
1566 case XK_KP_3: case XK_KP_Next: return 0x55;
1567 case XK_KP_4: case XK_KP_Left: return 0x56;
1568 case XK_KP_5: case XK_KP_Begin: return 0x57;
1569 case XK_KP_6: case XK_KP_Right: return 0x58;
1570 case XK_KP_7: case XK_KP_Home: return 0x59;
1571 case XK_KP_8: case XK_KP_Up: return 0x5b;
1572 case XK_KP_9: case XK_KP_Prior: return 0x5c;
1573 case XK_KP_Decimal: case XK_KP_Delete: return 0x41;
1574 #else
1575 case XK_KP_0: return 0x52;
1576 case XK_KP_1: return 0x53;
1577 case XK_KP_2: return 0x54;
1578 case XK_KP_3: return 0x55;
1579 case XK_KP_4: return 0x56;
1580 case XK_KP_5: return 0x57;
1581 case XK_KP_6: return 0x58;
1582 case XK_KP_7: return 0x59;
1583 case XK_KP_8: return 0x5b;
1584 case XK_KP_9: return 0x5c;
1585 case XK_KP_Decimal: return 0x41;
1586 #endif
1587 case XK_KP_Add: return 0x45;
1588 case XK_KP_Subtract: return 0x4e;
1589 case XK_KP_Multiply: return 0x43;
1590 case XK_KP_Divide: return 0x4b;
1591 case XK_KP_Enter: return 0x4c;
1592 case XK_KP_Equal: return 0x51;
1593 }
1594 return -1;
1595 }
1596
1597 static int event2keycode(XKeyEvent &ev)
1598 {
1599 KeySym ks;
1600 int as;
1601 int i = 0;
1602
1603 do {
1604 ks = XLookupKeysym(&ev, i++);
1605 as = kc_decode(ks);
1606 if (as != -1)
1607 return as;
1608 } while (ks != NoSymbol);
1609
1610 return -1;
1611 }
1612
1613
1614 /*
1615 * X event handling
1616 */
1617
1618 static void handle_events(void)
1619 {
1620 while (XPending(x_display)) {
1621 XEvent event;
1622 XNextEvent(x_display, &event);
1623
1624 switch (event.type) {
1625 // Mouse button
1626 case ButtonPress: {
1627 unsigned int button = event.xbutton.button;
1628 if (button < 4)
1629 ADBMouseDown(button - 1);
1630 else if (button < 6) { // Wheel mouse
1631 if (mouse_wheel_mode == 0) {
1632 int key = (button == 5) ? 0x79 : 0x74; // Page up/down
1633 ADBKeyDown(key);
1634 ADBKeyUp(key);
1635 } else {
1636 int key = (button == 5) ? 0x3d : 0x3e; // Cursor up/down
1637 for(int i=0; i<mouse_wheel_lines; i++) {
1638 ADBKeyDown(key);
1639 ADBKeyUp(key);
1640 }
1641 }
1642 }
1643 break;
1644 }
1645 case ButtonRelease: {
1646 unsigned int button = event.xbutton.button;
1647 if (button < 4)
1648 ADBMouseUp(button - 1);
1649 break;
1650 }
1651
1652 // Mouse moved
1653 case EnterNotify:
1654 case MotionNotify:
1655 ADBMouseMoved(event.xmotion.x, event.xmotion.y);
1656 break;
1657
1658 // Keyboard
1659 case KeyPress: {
1660 int code;
1661 if (use_keycodes) {
1662 event2keycode(event.xkey); // This is called to process the hotkeys
1663 code = keycode_table[event.xkey.keycode & 0xff];
1664 } else
1665 code = event2keycode(event.xkey);
1666 if (code != -1) {
1667 if (!emul_suspended) {
1668 if (code == 0x39) { // Caps Lock pressed
1669 if (caps_on) {
1670 ADBKeyUp(code);
1671 caps_on = false;
1672 } else {
1673 ADBKeyDown(code);
1674 caps_on = true;
1675 }
1676 } else
1677 ADBKeyDown(code);
1678 if (code == 0x36)
1679 ctrl_down = true;
1680 } else {
1681 #if defined(ENABLE_XF86_DGA) || defined(ENABLE_FBDEV_DGA)
1682 if (code == 0x31)
1683 resume_emul(); // Space wakes us up
1684 #endif
1685 }
1686 }
1687 break;
1688 }
1689 case KeyRelease: {
1690 int code;
1691 if (use_keycodes) {
1692 event2keycode(event.xkey); // This is called to process the hotkeys
1693 code = keycode_table[event.xkey.keycode & 0xff];
1694 } else
1695 code = event2keycode(event.xkey);
1696 if (code != -1 && code != 0x39) { // Don't propagate Caps Lock releases
1697 ADBKeyUp(code);
1698 if (code == 0x36)
1699 ctrl_down = false;
1700 }
1701 break;
1702 }
1703
1704 // Hidden parts exposed, force complete refresh of window
1705 case Expose:
1706 if (display_type == DISPLAY_WINDOW) {
1707 #ifdef ENABLE_VOSF
1708 if (use_vosf) { // VOSF refresh
1709 LOCK_VOSF;
1710 PFLAG_SET_ALL;
1711 UNLOCK_VOSF;
1712 memset(the_buffer_copy, 0, VideoMonitor.bytes_per_row * VideoMonitor.y);
1713 }
1714 else
1715 #endif
1716 if (frame_skip == 0) { // Dynamic refresh
1717 int x1, y1;
1718 for (y1=0; y1<16; y1++)
1719 for (x1=0; x1<16; x1++)
1720 updt_box[x1][y1] = true;
1721 nr_boxes = 16 * 16;
1722 } else // Static refresh
1723 memset(the_buffer_copy, 0, VideoMonitor.bytes_per_row * VideoMonitor.y);
1724 }
1725 break;
1726
1727 // Window "close" widget clicked
1728 case ClientMessage:
1729 if (event.xclient.format == 32 && event.xclient.data.l[0] == WM_DELETE_WINDOW) {
1730 ADBKeyDown(0x7f); // Power key
1731 ADBKeyUp(0x7f);
1732 }
1733 break;
1734 }
1735 }
1736 }
1737
1738
1739 /*
1740 * Window display update
1741 */
1742
1743 // Dynamic display update (variable frame rate for each box)
1744 static void update_display_dynamic(int ticker)
1745 {
1746 int y1, y2, y2s, y2a, i, x1, xm, xmo, ymo, yo, yi, yil, xi;
1747 int xil = 0;
1748 int rxm = 0, rxmo = 0;
1749 int bytes_per_row = VideoMonitor.bytes_per_row;
1750 int bytes_per_pixel = VideoMonitor.bytes_per_row / VideoMonitor.x;
1751 int rx = VideoMonitor.bytes_per_row / 16;
1752 int ry = VideoMonitor.y / 16;
1753 int max_box;
1754
1755 y2s = sm_uptd[ticker % 8];
1756 y2a = 8;
1757 for (i = 0; i < 6; i++)
1758 if (ticker % (2 << i))
1759 break;
1760 max_box = sm_no_boxes[i];
1761
1762 if (y2a) {
1763 for (y1=0; y1<16; y1++) {
1764 for (y2=y2s; y2 < ry; y2 += y2a) {
1765 i = ((y1 * ry) + y2) * bytes_per_row;
1766 for (x1=0; x1<16; x1++, i += rx) {
1767 if (updt_box[x1][y1] == false) {
1768 if (memcmp(&the_buffer_copy[i], &the_buffer[i], rx)) {
1769 updt_box[x1][y1] = true;
1770 nr_boxes++;
1771 }
1772 }
1773 }
1774 }
1775 }
1776 }
1777
1778 if ((nr_boxes <= max_box) && (nr_boxes)) {
1779 for (y1=0; y1<16; y1++) {
1780 for (x1=0; x1<16; x1++) {
1781 if (updt_box[x1][y1] == true) {
1782 if (rxm == 0)
1783 xm = x1;
1784 rxm += rx;
1785 updt_box[x1][y1] = false;
1786 }
1787 if (((updt_box[x1+1][y1] == false) || (x1 == 15)) && (rxm)) {
1788 if ((rxmo != rxm) || (xmo != xm) || (yo != y1 - 1)) {
1789 if (rxmo) {
1790 xi = xmo * rx;
1791 yi = ymo * ry;
1792 xil = rxmo;
1793 yil = (yo - ymo +1) * ry;
1794 }
1795 rxmo = rxm;
1796 xmo = xm;
1797 ymo = y1;
1798 }
1799 rxm = 0;
1800 yo = y1;
1801 }
1802 if (xil) {
1803 i = (yi * bytes_per_row) + xi;
1804 for (y2=0; y2 < yil; y2++, i += bytes_per_row)
1805 memcpy(&the_buffer_copy[i], &the_buffer[i], xil);
1806 if (depth == 1) {
1807 if (have_shm)
1808 XShmPutImage(x_display, the_win, the_gc, img, xi * 8, yi, xi * 8, yi, xil * 8, yil, 0);
1809 else
1810 XPutImage(x_display, the_win, the_gc, img, xi * 8, yi, xi * 8, yi, xil * 8, yil);
1811 } else {
1812 if (have_shm)
1813 XShmPutImage(x_display, the_win, the_gc, img, xi / bytes_per_pixel, yi, xi / bytes_per_pixel, yi, xil / bytes_per_pixel, yil, 0);
1814 else
1815 XPutImage(x_display, the_win, the_gc, img, xi / bytes_per_pixel, yi, xi / bytes_per_pixel, yi, xil / bytes_per_pixel, yil);
1816 }
1817 xil = 0;
1818 }
1819 if ((x1 == 15) && (y1 == 15) && (rxmo)) {
1820 x1--;
1821 xi = xmo * rx;
1822 yi = ymo * ry;
1823 xil = rxmo;
1824 yil = (yo - ymo +1) * ry;
1825 rxmo = 0;
1826 }
1827 }
1828 }
1829 nr_boxes = 0;
1830 }
1831 }
1832
1833 // Static display update (fixed frame rate, but incremental)
1834 static void update_display_static(void)
1835 {
1836 // Incremental update code
1837 int wide = 0, high = 0, x1, x2, y1, y2, i, j;
1838 int bytes_per_row = VideoMonitor.bytes_per_row;
1839 int bytes_per_pixel = VideoMonitor.bytes_per_row / VideoMonitor.x;
1840 uint8 *p, *p2;
1841
1842 // Check for first line from top and first line from bottom that have changed
1843 y1 = 0;
1844 for (j=0; j<VideoMonitor.y; j++) {
1845 if (memcmp(&the_buffer[j * bytes_per_row], &the_buffer_copy[j * bytes_per_row], bytes_per_row)) {
1846 y1 = j;
1847 break;
1848 }
1849 }
1850 y2 = y1 - 1;
1851 for (j=VideoMonitor.y-1; j>=y1; j--) {
1852 if (memcmp(&the_buffer[j * bytes_per_row], &the_buffer_copy[j * bytes_per_row], bytes_per_row)) {
1853 y2 = j;
1854 break;
1855 }
1856 }
1857 high = y2 - y1 + 1;
1858
1859 // Check for first column from left and first column from right that have changed
1860 if (high) {
1861 if (depth == 1) {
1862 x1 = VideoMonitor.x - 1;
1863 for (j=y1; j<=y2; j++) {
1864 p = &the_buffer[j * bytes_per_row];
1865 p2 = &the_buffer_copy[j * bytes_per_row];
1866 for (i=0; i<(x1>>3); i++) {
1867 if (*p != *p2) {
1868 x1 = i << 3;
1869 break;
1870 }
1871 p++; p2++;
1872 }
1873 }
1874 x2 = x1;
1875 for (j=y1; j<=y2; j++) {
1876 p = &the_buffer[j * bytes_per_row];
1877 p2 = &the_buffer_copy[j * bytes_per_row];
1878 p += bytes_per_row;
1879 p2 += bytes_per_row;
1880 for (i=(VideoMonitor.x>>3); i>(x2>>3); i--) {
1881 p--; p2--;
1882 if (*p != *p2) {
1883 x2 = (i << 3) + 7;
1884 break;
1885 }
1886 }
1887 }
1888 wide = x2 - x1 + 1;
1889
1890 // Update copy of the_buffer
1891 if (high && wide) {
1892 for (j=y1; j<=y2; j++) {
1893 i = j * bytes_per_row + (x1 >> 3);
1894 memcpy(the_buffer_copy + i, the_buffer + i, wide >> 3);
1895 }
1896 }
1897
1898 } else {
1899 x1 = VideoMonitor.x;
1900 for (j=y1; j<=y2; j++) {
1901 p = &the_buffer[j * bytes_per_row];
1902 p2 = &the_buffer_copy[j * bytes_per_row];
1903 for (i=0; i<x1*bytes_per_pixel; i++) {
1904 if (*p != *p2) {
1905 x1 = i / bytes_per_pixel;
1906 break;
1907 }
1908 p++; p2++;
1909 }
1910 }
1911 x2 = x1;
1912 for (j=y1; j<=y2; j++) {
1913 p = &the_buffer[j * bytes_per_row];
1914 p2 = &the_buffer_copy[j * bytes_per_row];
1915 p += bytes_per_row;
1916 p2 += bytes_per_row;
1917 for (i=VideoMonitor.x*bytes_per_pixel; i>x2*bytes_per_pixel; i--) {
1918 p--;
1919 p2--;
1920 if (*p != *p2) {
1921 x2 = i / bytes_per_pixel;
1922 break;
1923 }
1924 }
1925 }
1926 wide = x2 - x1;
1927
1928 // Update copy of the_buffer
1929 if (high && wide) {
1930 for (j=y1; j<=y2; j++) {
1931 i = j * bytes_per_row + x1 * bytes_per_pixel;
1932 memcpy(the_buffer_copy + i, the_buffer + i, bytes_per_pixel * wide);
1933 }
1934 }
1935 }
1936 }
1937
1938 // Refresh display
1939 if (high && wide) {
1940 if (have_shm)
1941 XShmPutImage(x_display, the_win, the_gc, img, x1, y1, x1, y1, wide, high, 0);
1942 else
1943 XPutImage(x_display, the_win, the_gc, img, x1, y1, x1, y1, wide, high);
1944 }
1945 }
1946
1947
1948 /*
1949 * Screen refresh functions
1950 */
1951
1952 // We suggest the compiler to inline the next two functions so that it
1953 // may specialise the code according to the current screen depth and
1954 // display type. A clever compiler would do that job by itself though...
1955
1956 // NOTE: update_display_vosf is inlined too
1957
1958 static inline void possibly_quit_dga_mode()
1959 {
1960 #if defined(ENABLE_XF86_DGA) || defined(ENABLE_FBDEV_DGA)
1961 // Quit DGA mode if requested
1962 if (quit_full_screen) {
1963 quit_full_screen = false;
1964 #ifdef ENABLE_XF86_DGA
1965 XF86DGADirectVideo(x_display, screen, 0);
1966 #endif
1967 XUngrabPointer(x_display, CurrentTime);
1968 XUngrabKeyboard(x_display, CurrentTime);
1969 XUnmapWindow(x_display, the_win);
1970 XSync(x_display, false);
1971 }
1972 #endif
1973 }
1974
1975 static inline void handle_palette_changes(int depth, int display_type)
1976 {
1977 LOCK_PALETTE;
1978
1979 if (palette_changed) {
1980 palette_changed = false;
1981 if (depth == 8) {
1982 XStoreColors(x_display, cmap[0], palette, 256);
1983 XStoreColors(x_display, cmap[1], palette, 256);
1984 XSync(x_display, false);
1985
1986 #ifdef ENABLE_XF86_DGA
1987 if (display_type == DISPLAY_DGA) {
1988 current_dga_cmap ^= 1;
1989 XF86DGAInstallColormap(x_display, screen, cmap[current_dga_cmap]);
1990 }
1991 #endif
1992 }
1993 }
1994
1995 UNLOCK_PALETTE;
1996 }
1997
1998 static void video_refresh_dga(void)
1999 {
2000 // Quit DGA mode if requested
2001 possibly_quit_dga_mode();
2002
2003 // Handle X events
2004 handle_events();
2005
2006 // Handle palette changes
2007 handle_palette_changes(depth, DISPLAY_DGA);
2008 }
2009
2010 #ifdef ENABLE_VOSF
2011 #if REAL_ADDRESSING || DIRECT_ADDRESSING
2012 static void video_refresh_dga_vosf(void)
2013 {
2014 // Quit DGA mode if requested
2015 possibly_quit_dga_mode();
2016
2017 // Handle X events
2018 handle_events();
2019
2020 // Handle palette changes
2021 handle_palette_changes(depth, DISPLAY_DGA);
2022
2023 // Update display (VOSF variant)
2024 static int tick_counter = 0;
2025 if (++tick_counter >= frame_skip) {
2026 tick_counter = 0;
2027 LOCK_VOSF;
2028 update_display_dga_vosf();
2029 UNLOCK_VOSF;
2030 }
2031 }
2032 #endif
2033
2034 static void video_refresh_window_vosf(void)
2035 {
2036 // Quit DGA mode if requested
2037 possibly_quit_dga_mode();
2038
2039 // Handle X events
2040 handle_events();
2041
2042 // Handle palette changes
2043 handle_palette_changes(depth, DISPLAY_WINDOW);
2044
2045 // Update display (VOSF variant)
2046 static int tick_counter = 0;
2047 if (++tick_counter >= frame_skip) {
2048 tick_counter = 0;
2049 LOCK_VOSF;
2050 update_display_window_vosf();
2051 UNLOCK_VOSF;
2052 }
2053 }
2054 #endif // def ENABLE_VOSF
2055
2056 static void video_refresh_window_static(void)
2057 {
2058 // Handle X events
2059 handle_events();
2060
2061 // Handle_palette changes
2062 handle_palette_changes(depth, DISPLAY_WINDOW);
2063
2064 // Update display (static variant)
2065 static int tick_counter = 0;
2066 if (++tick_counter >= frame_skip) {
2067 tick_counter = 0;
2068 update_display_static();
2069 }
2070 }
2071
2072 static void video_refresh_window_dynamic(void)
2073 {
2074 // Handle X events
2075 handle_events();
2076
2077 // Handle_palette changes
2078 handle_palette_changes(depth, DISPLAY_WINDOW);
2079
2080 // Update display (dynamic variant)
2081 static int tick_counter = 0;
2082 tick_counter++;
2083 update_display_dynamic(tick_counter);
2084 }
2085
2086
2087 /*
2088 * Thread for screen refresh, input handling etc.
2089 */
2090
2091 void VideoRefreshInit(void)
2092 {
2093 // TODO: set up specialised 8bpp VideoRefresh handlers ?
2094 if (display_type == DISPLAY_DGA) {
2095 #if ENABLE_VOSF && (REAL_ADDRESSING || DIRECT_ADDRESSING)
2096 if (use_vosf)
2097 video_refresh = video_refresh_dga_vosf;
2098 else
2099 #endif
2100 video_refresh = video_refresh_dga;
2101 }
2102 else {
2103 #ifdef ENABLE_VOSF
2104 if (use_vosf)
2105 video_refresh = video_refresh_window_vosf;
2106 else
2107 #endif
2108 if (frame_skip == 0)
2109 video_refresh = video_refresh_window_dynamic;
2110 else
2111 video_refresh = video_refresh_window_static;
2112 }
2113 }
2114
2115 void VideoRefresh(void)
2116 {
2117 // TODO: make main_unix/VideoRefresh call directly video_refresh() ?
2118 video_refresh();
2119 }
2120
2121 #ifdef HAVE_PTHREADS
2122 static void *redraw_func(void *arg)
2123 {
2124 uint64 start = GetTicks_usec();
2125 int64 ticks = 0;
2126 uint64 next = GetTicks_usec();
2127 while (!redraw_thread_cancel) {
2128 video_refresh();
2129 next += 16667;
2130 int64 delay = next - GetTicks_usec();
2131 if (delay > 0)
2132 Delay_usec(delay);
2133 else if (delay < -16667)
2134 next = GetTicks_usec();
2135 ticks++;
2136 }
2137 uint64 end = GetTicks_usec();
2138 printf("%Ld ticks in %Ld usec = %Ld ticks/sec\n", ticks, end - start, ticks * 1000000 / (end - start));
2139 return NULL;
2140 }
2141 #endif