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root/cebix/BasiliskII/src/Unix/video_x.cpp
Revision: 1.38
Committed: 2001-05-20T20:31:50Z (23 years, 1 month ago) by gbeauche
Branch: MAIN
CVS Tags: snapshot-29052001, release-0_9-1
Changes since 1.37: +2 -5 lines
Log Message: 
- new and updated SIGSEGV support functions:
  + configure script cleanups
  + possible support for Direct Addressing / VOSF on other platforms

File Contents

# Content
1 /*
2 * video_x.cpp - Video/graphics emulation, X11 specific stuff
3 *
4 * Basilisk II (C) 1997-2001 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 <fcntl.h>
57 # include <sys/mman.h>
58 # include "sigsegv.h"
59 #endif
60
61 #include "cpu_emulation.h"
62 #include "main.h"
63 #include "adb.h"
64 #include "macos_util.h"
65 #include "prefs.h"
66 #include "user_strings.h"
67 #include "video.h"
68
69 #define DEBUG 0
70 #include "debug.h"
71
72
73 // Display types
74 enum {
75 DISPLAY_WINDOW, // X11 window, using MIT SHM extensions if possible
76 DISPLAY_DGA // DGA fullscreen display
77 };
78
79 // Constants
80 const char KEYCODE_FILE_NAME[] = DATADIR "/keycodes";
81 const char FBDEVICES_FILE_NAME[] = DATADIR "/fbdevices";
82
83
84 // Global variables
85 static int32 frame_skip; // Prefs items
86 static int16 mouse_wheel_mode = 1;
87 static int16 mouse_wheel_lines = 3;
88
89 static int display_type = DISPLAY_WINDOW; // See enum above
90 static bool local_X11; // Flag: X server running on local machine?
91 static uint8 *the_buffer; // Mac frame buffer
92
93 #ifdef HAVE_PTHREADS
94 static bool redraw_thread_active = false; // Flag: Redraw thread installed
95 static volatile bool redraw_thread_cancel = false; // Flag: Cancel Redraw thread
96 static pthread_t redraw_thread; // Redraw thread
97 #endif
98
99 static bool has_dga = false; // Flag: Video DGA capable
100 static bool has_vidmode = false; // Flag: VidMode extension available
101
102 static bool ctrl_down = false; // Flag: Ctrl key pressed
103 static bool caps_on = false; // Flag: Caps Lock on
104 static bool quit_full_screen = false; // Flag: DGA close requested from redraw thread
105 static bool emerg_quit = false; // Flag: Ctrl-Esc pressed, emergency quit requested from MacOS thread
106 static bool emul_suspended = false; // Flag: Emulator suspended
107
108 static bool classic_mode = false; // Flag: Classic Mac video mode
109
110 static bool use_keycodes = false; // Flag: Use keycodes rather than keysyms
111 static int keycode_table[256]; // X keycode -> Mac keycode translation table
112
113 // X11 variables
114 static int screen; // Screen number
115 static int xdepth; // Depth of X screen
116 static int depth; // Depth of Mac frame buffer
117 static Window rootwin, the_win; // Root window and our window
118 static XVisualInfo visualInfo;
119 static Visual *vis;
120 static Colormap cmap[2]; // Two colormaps (DGA) for 8-bit mode
121 static XColor black, white;
122 static unsigned long black_pixel, white_pixel;
123 static int eventmask;
124 static const int win_eventmask = KeyPressMask | KeyReleaseMask | ButtonPressMask | ButtonReleaseMask | PointerMotionMask | EnterWindowMask | ExposureMask | StructureNotifyMask;
125 static const int dga_eventmask = KeyPressMask | KeyReleaseMask | ButtonPressMask | ButtonReleaseMask | PointerMotionMask | StructureNotifyMask;
126 static Atom WM_DELETE_WINDOW = (Atom)0;
127
128 static XColor palette[256]; // Color palette for 8-bit mode
129 static bool palette_changed = false; // Flag: Palette changed, redraw thread must set new colors
130 #ifdef HAVE_PTHREADS
131 static pthread_mutex_t palette_lock = PTHREAD_MUTEX_INITIALIZER; // Mutex to protect palette
132 #define LOCK_PALETTE pthread_mutex_lock(&palette_lock)
133 #define UNLOCK_PALETTE pthread_mutex_unlock(&palette_lock)
134 #else
135 #define LOCK_PALETTE
136 #define UNLOCK_PALETTE
137 #endif
138
139 // Variables for window mode
140 static GC the_gc;
141 static XImage *img = NULL;
142 static XShmSegmentInfo shminfo;
143 static Cursor mac_cursor;
144 static uint8 *the_buffer_copy = NULL; // Copy of Mac frame buffer
145 static bool have_shm = false; // Flag: SHM extensions available
146 static bool updt_box[17][17]; // Flag for Update
147 static int nr_boxes;
148 static const int sm_uptd[] = {4,1,6,3,0,5,2,7};
149 static int sm_no_boxes[] = {1,8,32,64,128,300};
150
151 // Variables for XF86 DGA mode
152 static int current_dga_cmap; // Number (0 or 1) of currently installed DGA colormap
153 static Window suspend_win; // "Suspend" window
154 static void *fb_save = NULL; // Saved frame buffer for suspend
155 #ifdef HAVE_PTHREADS
156 static pthread_mutex_t frame_buffer_lock = PTHREAD_MUTEX_INITIALIZER; // Mutex to protect frame buffer
157 #define LOCK_FRAME_BUFFER pthread_mutex_lock(&frame_buffer_lock);
158 #define UNLOCK_FRAME_BUFFER pthread_mutex_unlock(&frame_buffer_lock);
159 #else
160 #define LOCK_FRAME_BUFFER
161 #define UNLOCK_FRAME_BUFFER
162 #endif
163
164 // Variables for fbdev DGA mode
165 const char FBDEVICE_FILE_NAME[] = "/dev/fb";
166 static int fbdev_fd;
167
168 #ifdef ENABLE_XF86_VIDMODE
169 // Variables for XF86 VidMode support
170 static XF86VidModeModeInfo **x_video_modes; // Array of all available modes
171 static int num_x_video_modes;
172 #endif
173
174 #ifdef ENABLE_VOSF
175 static bool use_vosf = true; // Flag: VOSF enabled
176 #else
177 static const bool use_vosf = false; // Flag: VOSF enabled
178 #endif
179
180 #ifdef ENABLE_VOSF
181 // Variables for Video on SEGV support (taken from the Win32 port)
182 static uint8 *the_host_buffer; // Host frame buffer in VOSF mode
183 static uint32 the_buffer_size; // Size of allocated the_buffer
184
185 struct ScreenPageInfo {
186 int top, bottom; // Mapping between this virtual page and Mac scanlines
187 };
188
189 struct ScreenInfo {
190 uint32 memBase; // Real start address
191 uint32 memStart; // Start address aligned to page boundary
192 uint32 memEnd; // Address of one-past-the-end of the screen
193 uint32 memLength; // Length of the memory addressed by the screen pages
194
195 uint32 pageSize; // Size of a page
196 int pageBits; // Shift count to get the page number
197 uint32 pageCount; // Number of pages allocated to the screen
198
199 bool dirty; // Flag: set if the frame buffer was touched
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 do { \
238 PFLAG_SET_RANGE(0, mainBuffer.pageCount); \
239 mainBuffer.dirty = true; \
240 } while (0)
241
242 #define PFLAG_CLEAR_ALL do { \
243 PFLAG_CLEAR_RANGE(0, mainBuffer.pageCount); \
244 mainBuffer.dirty = false; \
245 } while (0)
246
247 // Set the following macro definition to 1 if your system
248 // provides a really fast strchr() implementation
249 //#define HAVE_FAST_STRCHR 0
250
251 static inline int find_next_page_set(int page)
252 {
253 #if HAVE_FAST_STRCHR
254 char *match = strchr(mainBuffer.dirtyPages + page, PFLAG_SET_VALUE);
255 return match ? match - mainBuffer.dirtyPages : mainBuffer.pageCount;
256 #else
257 while (PFLAG_ISCLEAR_4(page))
258 page += 4;
259 while (PFLAG_ISCLEAR(page))
260 page++;
261 return page;
262 #endif
263 }
264
265 static inline int find_next_page_clear(int page)
266 {
267 #if HAVE_FAST_STRCHR
268 char *match = strchr(mainBuffer.dirtyPages + page, PFLAG_CLEAR_VALUE);
269 return match ? match - mainBuffer.dirtyPages : mainBuffer.pageCount;
270 #else
271 while (PFLAG_ISSET_4(page))
272 page += 4;
273 while (PFLAG_ISSET(page))
274 page++;
275 return page;
276 #endif
277 }
278
279 static int zero_fd = -1;
280
281 #ifdef HAVE_PTHREADS
282 static pthread_mutex_t vosf_lock = PTHREAD_MUTEX_INITIALIZER; // Mutex to protect frame buffer (dirtyPages in fact)
283 #define LOCK_VOSF pthread_mutex_lock(&vosf_lock);
284 #define UNLOCK_VOSF pthread_mutex_unlock(&vosf_lock);
285 #else
286 #define LOCK_VOSF
287 #define UNLOCK_VOSF
288 #endif
289
290 static int log_base_2(uint32 x)
291 {
292 uint32 mask = 0x80000000;
293 int l = 31;
294 while (l >= 0 && (x & mask) == 0) {
295 mask >>= 1;
296 l--;
297 }
298 return l;
299 }
300 #endif /* ENABLE_VOSF */
301
302 // VideoRefresh function
303 void VideoRefreshInit(void);
304 static void (*video_refresh)(void);
305
306 // Prototypes
307 static void *redraw_func(void *arg);
308 static int event2keycode(XKeyEvent &ev);
309
310
311 // From main_unix.cpp
312 extern char *x_display_name;
313 extern Display *x_display;
314
315 // From sys_unix.cpp
316 extern void SysMountFirstFloppy(void);
317
318 #ifdef ENABLE_VOSF
319 # include "video_vosf.h"
320 #endif
321
322
323 /*
324 * Initialization
325 */
326
327 // Set VideoMonitor according to video mode
328 void set_video_monitor(int width, int height, int bytes_per_row, bool native_byte_order)
329 {
330 #if !REAL_ADDRESSING && !DIRECT_ADDRESSING
331 int layout = FLAYOUT_DIRECT;
332 switch (depth) {
333 case 1:
334 layout = FLAYOUT_DIRECT;
335 break;
336 case 8:
337 layout = FLAYOUT_DIRECT;
338 break;
339 case 15:
340 layout = FLAYOUT_HOST_555;
341 break;
342 case 16:
343 layout = FLAYOUT_HOST_565;
344 break;
345 case 24:
346 case 32:
347 layout = FLAYOUT_HOST_888;
348 break;
349 }
350 if (native_byte_order)
351 MacFrameLayout = layout;
352 else
353 MacFrameLayout = FLAYOUT_DIRECT;
354 #endif
355 switch (depth) {
356 case 1:
357 VideoMonitor.mode = VMODE_1BIT;
358 break;
359 case 8:
360 VideoMonitor.mode = VMODE_8BIT;
361 break;
362 case 15:
363 VideoMonitor.mode = VMODE_16BIT;
364 break;
365 case 16:
366 VideoMonitor.mode = VMODE_16BIT;
367 break;
368 case 24:
369 case 32:
370 VideoMonitor.mode = VMODE_32BIT;
371 break;
372 }
373 VideoMonitor.x = width;
374 VideoMonitor.y = height;
375 VideoMonitor.bytes_per_row = bytes_per_row;
376 }
377
378 // Set window name and class
379 static void set_window_name(Window w, int name)
380 {
381 const char *str = GetString(name);
382 XStoreName(x_display, w, str);
383 XSetIconName(x_display, w, str);
384
385 XClassHint *hints;
386 hints = XAllocClassHint();
387 if (hints) {
388 hints->res_name = "BasiliskII";
389 hints->res_class = "BasiliskII";
390 XSetClassHint(x_display, w, hints);
391 XFree(hints);
392 }
393 }
394
395 // Set window input focus flag
396 static void set_window_focus(Window w)
397 {
398 XWMHints *hints = XAllocWMHints();
399 if (hints) {
400 hints->input = True;
401 hints->initial_state = NormalState;
402 hints->flags = InputHint | StateHint;
403 XSetWMHints(x_display, w, hints);
404 XFree(hints);
405 }
406 }
407
408 // Set WM_DELETE_WINDOW protocol on window (preventing it from being destroyed by the WM when clicking on the "close" widget)
409 static void set_window_delete_protocol(Window w)
410 {
411 WM_DELETE_WINDOW = XInternAtom(x_display, "WM_DELETE_WINDOW", false);
412 XSetWMProtocols(x_display, w, &WM_DELETE_WINDOW, 1);
413 }
414
415 // Wait until window is mapped/unmapped
416 void wait_mapped(Window w)
417 {
418 XEvent e;
419 do {
420 XMaskEvent(x_display, StructureNotifyMask, &e);
421 } while ((e.type != MapNotify) || (e.xmap.event != w));
422 }
423
424 void wait_unmapped(Window w)
425 {
426 XEvent e;
427 do {
428 XMaskEvent(x_display, StructureNotifyMask, &e);
429 } while ((e.type != UnmapNotify) || (e.xmap.event != w));
430 }
431
432 // Trap SHM errors
433 static bool shm_error = false;
434 static int (*old_error_handler)(Display *, XErrorEvent *);
435
436 static int error_handler(Display *d, XErrorEvent *e)
437 {
438 if (e->error_code == BadAccess) {
439 shm_error = true;
440 return 0;
441 } else
442 return old_error_handler(d, e);
443 }
444
445 // Init window mode
446 static bool init_window(int width, int height)
447 {
448 int aligned_width = (width + 15) & ~15;
449 int aligned_height = (height + 15) & ~15;
450
451 // Set absolute mouse mode
452 ADBSetRelMouseMode(false);
453
454 // Read frame skip prefs
455 frame_skip = PrefsFindInt32("frameskip");
456
457 // Create window
458 XSetWindowAttributes wattr;
459 wattr.event_mask = eventmask = win_eventmask;
460 wattr.background_pixel = black_pixel;
461 wattr.colormap = cmap[0];
462
463 the_win = XCreateWindow(x_display, rootwin, 0, 0, width, height, 0, xdepth,
464 InputOutput, vis, CWEventMask | CWBackPixel | (depth == 8 ? CWColormap : 0), &wattr);
465
466 // Set window name/class
467 set_window_name(the_win, STR_WINDOW_TITLE);
468
469 // Indicate that we want keyboard input
470 set_window_focus(the_win);
471
472 // Set delete protocol property
473 set_window_delete_protocol(the_win);
474
475 // Make window unresizable
476 {
477 XSizeHints *hints = XAllocSizeHints();
478 if (hints) {
479 hints->min_width = width;
480 hints->max_width = width;
481 hints->min_height = height;
482 hints->max_height = height;
483 hints->flags = PMinSize | PMaxSize;
484 XSetWMNormalHints(x_display, the_win, hints);
485 XFree(hints);
486 }
487 }
488
489 // Show window
490 XMapWindow(x_display, the_win);
491 wait_mapped(the_win);
492
493 // Try to create and attach SHM image
494 have_shm = false;
495 if (depth != 1 && local_X11 && XShmQueryExtension(x_display)) {
496
497 // Create SHM image ("height + 2" for safety)
498 img = XShmCreateImage(x_display, vis, depth, depth == 1 ? XYBitmap : ZPixmap, 0, &shminfo, width, height);
499 shminfo.shmid = shmget(IPC_PRIVATE, (aligned_height + 2) * img->bytes_per_line, IPC_CREAT | 0777);
500 the_buffer_copy = (uint8 *)shmat(shminfo.shmid, 0, 0);
501 shminfo.shmaddr = img->data = (char *)the_buffer_copy;
502 shminfo.readOnly = False;
503
504 // Try to attach SHM image, catching errors
505 shm_error = false;
506 old_error_handler = XSetErrorHandler(error_handler);
507 XShmAttach(x_display, &shminfo);
508 XSync(x_display, false);
509 XSetErrorHandler(old_error_handler);
510 if (shm_error) {
511 shmdt(shminfo.shmaddr);
512 XDestroyImage(img);
513 shminfo.shmid = -1;
514 } else {
515 have_shm = true;
516 shmctl(shminfo.shmid, IPC_RMID, 0);
517 }
518 }
519
520 // Create normal X image if SHM doesn't work ("height + 2" for safety)
521 if (!have_shm) {
522 int bytes_per_row = aligned_width;
523 switch (depth) {
524 case 1:
525 bytes_per_row /= 8;
526 break;
527 case 15:
528 case 16:
529 bytes_per_row *= 2;
530 break;
531 case 24:
532 case 32:
533 bytes_per_row *= 4;
534 break;
535 }
536 the_buffer_copy = (uint8 *)malloc((aligned_height + 2) * bytes_per_row);
537 img = XCreateImage(x_display, vis, depth, depth == 1 ? XYBitmap : ZPixmap, 0, (char *)the_buffer_copy, aligned_width, aligned_height, 32, bytes_per_row);
538 }
539
540 // 1-Bit mode is big-endian
541 if (depth == 1) {
542 img->byte_order = MSBFirst;
543 img->bitmap_bit_order = MSBFirst;
544 }
545
546 #ifdef ENABLE_VOSF
547 // Allocate a page-aligned chunk of memory for frame buffer
548 the_buffer_size = align_on_page_boundary((aligned_height + 2) * img->bytes_per_line);
549 the_host_buffer = the_buffer_copy;
550
551 the_buffer_copy = (uint8 *)allocate_framebuffer(the_buffer_size);
552 memset(the_buffer_copy, 0, the_buffer_size);
553
554 the_buffer = (uint8 *)allocate_framebuffer(the_buffer_size);
555 memset(the_buffer, 0, the_buffer_size);
556 #else
557 // Allocate memory for frame buffer
558 the_buffer = (uint8 *)malloc((aligned_height + 2) * img->bytes_per_line);
559 #endif
560
561 // Create GC
562 the_gc = XCreateGC(x_display, the_win, 0, 0);
563 XSetState(x_display, the_gc, black_pixel, white_pixel, GXcopy, AllPlanes);
564
565 // Create no_cursor
566 mac_cursor = XCreatePixmapCursor(x_display,
567 XCreatePixmap(x_display, the_win, 1, 1, 1),
568 XCreatePixmap(x_display, the_win, 1, 1, 1),
569 &black, &white, 0, 0);
570 XDefineCursor(x_display, the_win, mac_cursor);
571
572 // Set VideoMonitor
573 bool native_byte_order;
574 #ifdef WORDS_BIGENDIAN
575 native_byte_order = (XImageByteOrder(x_display) == MSBFirst);
576 #else
577 native_byte_order = (XImageByteOrder(x_display) == LSBFirst);
578 #endif
579 #ifdef ENABLE_VOSF
580 Screen_blitter_init(&visualInfo, native_byte_order);
581 #endif
582 set_video_monitor(width, height, img->bytes_per_line, native_byte_order);
583
584 #if REAL_ADDRESSING || DIRECT_ADDRESSING
585 VideoMonitor.mac_frame_base = Host2MacAddr(the_buffer);
586 #else
587 VideoMonitor.mac_frame_base = MacFrameBaseMac;
588 #endif
589 return true;
590 }
591
592 // Init fbdev DGA display
593 static bool init_fbdev_dga(char *in_fb_name)
594 {
595 #ifdef ENABLE_FBDEV_DGA
596 // Find the maximum depth available
597 int ndepths, max_depth(0);
598 int *depths = XListDepths(x_display, screen, &ndepths);
599 if (depths == NULL) {
600 printf("FATAL: Could not determine the maximal depth available\n");
601 return false;
602 } else {
603 while (ndepths-- > 0) {
604 if (depths[ndepths] > max_depth)
605 max_depth = depths[ndepths];
606 }
607 }
608
609 // Get fbdevices file path from preferences
610 const char *fbd_path = PrefsFindString("fbdevicefile");
611
612 // Open fbdevices file
613 FILE *fp = fopen(fbd_path ? fbd_path : FBDEVICES_FILE_NAME, "r");
614 if (fp == NULL) {
615 char str[256];
616 sprintf(str, GetString(STR_NO_FBDEVICE_FILE_ERR), fbd_path ? fbd_path : FBDEVICES_FILE_NAME, strerror(errno));
617 ErrorAlert(str);
618 return false;
619 }
620
621 int fb_depth; // supported depth
622 uint32 fb_offset; // offset used for mmap(2)
623 char fb_name[20];
624 char line[256];
625 bool device_found = false;
626 while (fgets(line, 255, fp)) {
627 // Read line
628 int len = strlen(line);
629 if (len == 0)
630 continue;
631 line[len - 1] = '\0';
632
633 // Comments begin with "#" or ";"
634 if ((line[0] == '#') || (line[0] == ';') || (line[0] == '\0'))
635 continue;
636
637 if ((sscanf(line, "%19s %d %x", &fb_name, &fb_depth, &fb_offset) == 3)
638 && (strcmp(fb_name, in_fb_name) == 0) && (fb_depth == max_depth)) {
639 device_found = true;
640 break;
641 }
642 }
643
644 // fbdevices file completely read
645 fclose(fp);
646
647 // Frame buffer name not found ? Then, display warning
648 if (!device_found) {
649 char str[256];
650 sprintf(str, GetString(STR_FBDEV_NAME_ERR), in_fb_name, max_depth);
651 ErrorAlert(str);
652 return false;
653 }
654
655 int width = DisplayWidth(x_display, screen);
656 int height = DisplayHeight(x_display, screen);
657 depth = fb_depth; // max_depth
658
659 // Set relative mouse mode
660 ADBSetRelMouseMode(false);
661
662 // Create window
663 XSetWindowAttributes wattr;
664 wattr.event_mask = eventmask = dga_eventmask;
665 wattr.background_pixel = white_pixel;
666 wattr.override_redirect = True;
667 wattr.colormap = cmap[0];
668
669 the_win = XCreateWindow(x_display, rootwin,
670 0, 0, width, height,
671 0, xdepth, InputOutput, vis,
672 CWEventMask | CWBackPixel | CWOverrideRedirect | (depth == 8 ? CWColormap : 0),
673 &wattr);
674
675 // Set window name/class
676 set_window_name(the_win, STR_WINDOW_TITLE);
677
678 // Indicate that we want keyboard input
679 set_window_focus(the_win);
680
681 // Show window
682 XMapRaised(x_display, the_win);
683 wait_mapped(the_win);
684
685 // Grab mouse and keyboard
686 XGrabKeyboard(x_display, the_win, True,
687 GrabModeAsync, GrabModeAsync, CurrentTime);
688 XGrabPointer(x_display, the_win, True,
689 PointerMotionMask | ButtonPressMask | ButtonReleaseMask,
690 GrabModeAsync, GrabModeAsync, the_win, None, CurrentTime);
691
692 // Set VideoMonitor
693 int bytes_per_row = width;
694 switch (depth) {
695 case 1:
696 bytes_per_row = ((width | 7) & ~7) >> 3;
697 break;
698 case 15:
699 case 16:
700 bytes_per_row *= 2;
701 break;
702 case 24:
703 case 32:
704 bytes_per_row *= 4;
705 break;
706 }
707
708 if ((the_buffer = (uint8 *) mmap(NULL, height * bytes_per_row, PROT_READ | PROT_WRITE, MAP_PRIVATE, fbdev_fd, fb_offset)) == MAP_FAILED) {
709 if ((the_buffer = (uint8 *) mmap(NULL, height * bytes_per_row, PROT_READ | PROT_WRITE, MAP_SHARED, fbdev_fd, fb_offset)) == MAP_FAILED) {
710 char str[256];
711 sprintf(str, GetString(STR_FBDEV_MMAP_ERR), strerror(errno));
712 ErrorAlert(str);
713 return false;
714 }
715 }
716
717 #if ENABLE_VOSF
718 #if REAL_ADDRESSING || DIRECT_ADDRESSING
719 // Screen_blitter_init() returns TRUE if VOSF is mandatory
720 // i.e. the framebuffer update function is not Blit_Copy_Raw
721 use_vosf = Screen_blitter_init(&visualInfo, true);
722
723 if (use_vosf) {
724 the_host_buffer = the_buffer;
725 the_buffer_size = align_on_page_boundary((height + 2) * bytes_per_row);
726 the_buffer_copy = (uint8 *)malloc(the_buffer_size);
727 memset(the_buffer_copy, 0, the_buffer_size);
728 the_buffer = (uint8 *)allocate_framebuffer(the_buffer_size);
729 memset(the_buffer, 0, the_buffer_size);
730 }
731 #else
732 use_vosf = false;
733 #endif
734 #endif
735
736 set_video_monitor(width, height, bytes_per_row, true);
737 #if REAL_ADDRESSING || DIRECT_ADDRESSING
738 VideoMonitor.mac_frame_base = Host2MacAddr(the_buffer);
739 #else
740 VideoMonitor.mac_frame_base = MacFrameBaseMac;
741 #endif
742 return true;
743 #else
744 ErrorAlert("Basilisk II has been compiled with fbdev DGA support disabled.");
745 return false;
746 #endif
747 }
748
749 // Init XF86 DGA display
750 static bool init_xf86_dga(int width, int height)
751 {
752 #ifdef ENABLE_XF86_DGA
753 // Set relative mouse mode
754 ADBSetRelMouseMode(true);
755
756 #ifdef ENABLE_XF86_VIDMODE
757 // Switch to best mode
758 if (has_vidmode) {
759 int best = 0;
760 for (int i=1; i<num_x_video_modes; i++) {
761 if (x_video_modes[i]->hdisplay >= width && x_video_modes[i]->vdisplay >= height &&
762 x_video_modes[i]->hdisplay <= x_video_modes[best]->hdisplay && x_video_modes[i]->vdisplay <= x_video_modes[best]->vdisplay) {
763 best = i;
764 }
765 }
766 XF86VidModeSwitchToMode(x_display, screen, x_video_modes[best]);
767 XF86VidModeSetViewPort(x_display, screen, 0, 0);
768 XSync(x_display, false);
769 }
770 #endif
771
772 // Create window
773 XSetWindowAttributes wattr;
774 wattr.event_mask = eventmask = dga_eventmask;
775 wattr.override_redirect = True;
776
777 the_win = XCreateWindow(x_display, rootwin, 0, 0, width, height, 0, xdepth,
778 InputOutput, vis, CWEventMask | CWOverrideRedirect, &wattr);
779
780 // Set window name/class
781 set_window_name(the_win, STR_WINDOW_TITLE);
782
783 // Indicate that we want keyboard input
784 set_window_focus(the_win);
785
786 // Show window
787 XMapRaised(x_display, the_win);
788 wait_mapped(the_win);
789
790 // Establish direct screen connection
791 XMoveResizeWindow(x_display, the_win, 0, 0, width, height);
792 XWarpPointer(x_display, None, rootwin, 0, 0, 0, 0, 0, 0);
793 XGrabKeyboard(x_display, rootwin, True, GrabModeAsync, GrabModeAsync, CurrentTime);
794 XGrabPointer(x_display, rootwin, True, PointerMotionMask | ButtonPressMask | ButtonReleaseMask, GrabModeAsync, GrabModeAsync, None, None, CurrentTime);
795
796 int v_width, v_bank, v_size;
797 XF86DGAGetVideo(x_display, screen, (char **)&the_buffer, &v_width, &v_bank, &v_size);
798 XF86DGADirectVideo(x_display, screen, XF86DGADirectGraphics | XF86DGADirectKeyb | XF86DGADirectMouse);
799 XF86DGASetViewPort(x_display, screen, 0, 0);
800 XF86DGASetVidPage(x_display, screen, 0);
801
802 // Set colormap
803 if (depth == 8) {
804 XSetWindowColormap(x_display, the_win, cmap[current_dga_cmap = 0]);
805 XF86DGAInstallColormap(x_display, screen, cmap[current_dga_cmap]);
806 }
807 XSync(x_display, false);
808
809 // Set VideoMonitor
810 int bytes_per_row = (v_width + 7) & ~7;
811 switch (depth) {
812 case 1:
813 bytes_per_row /= 8;
814 break;
815 case 15:
816 case 16:
817 bytes_per_row *= 2;
818 break;
819 case 24:
820 case 32:
821 bytes_per_row *= 4;
822 break;
823 }
824
825 #if REAL_ADDRESSING || DIRECT_ADDRESSING
826 // Screen_blitter_init() returns TRUE if VOSF is mandatory
827 // i.e. the framebuffer update function is not Blit_Copy_Raw
828 use_vosf = Screen_blitter_init(&visualInfo, true);
829
830 if (use_vosf) {
831 the_host_buffer = the_buffer;
832 the_buffer_size = align_on_page_boundary((height + 2) * bytes_per_row);
833 the_buffer_copy = (uint8 *)malloc(the_buffer_size);
834 memset(the_buffer_copy, 0, the_buffer_size);
835 the_buffer = (uint8 *)allocate_framebuffer(the_buffer_size);
836 memset(the_buffer, 0, the_buffer_size);
837 }
838 #elif defined(ENABLE_VOSF)
839 // The UAE memory handlers will already handle color conversion, if needed.
840 use_vosf = false;
841 #endif
842
843 set_video_monitor(width, height, bytes_per_row, true);
844 #if REAL_ADDRESSING || DIRECT_ADDRESSING
845 VideoMonitor.mac_frame_base = Host2MacAddr(the_buffer);
846 // MacFrameLayout = FLAYOUT_DIRECT;
847 #else
848 VideoMonitor.mac_frame_base = MacFrameBaseMac;
849 #endif
850 return true;
851 #else
852 ErrorAlert("Basilisk II has been compiled with XF86 DGA support disabled.");
853 return false;
854 #endif
855 }
856
857 // Init keycode translation table
858 static void keycode_init(void)
859 {
860 bool use_kc = PrefsFindBool("keycodes");
861 if (use_kc) {
862
863 // Get keycode file path from preferences
864 const char *kc_path = PrefsFindString("keycodefile");
865
866 // Open keycode table
867 FILE *f = fopen(kc_path ? kc_path : KEYCODE_FILE_NAME, "r");
868 if (f == NULL) {
869 char str[256];
870 sprintf(str, GetString(STR_KEYCODE_FILE_WARN), kc_path ? kc_path : KEYCODE_FILE_NAME, strerror(errno));
871 WarningAlert(str);
872 return;
873 }
874
875 // Default translation table
876 for (int i=0; i<256; i++)
877 keycode_table[i] = -1;
878
879 // Search for server vendor string, then read keycodes
880 const char *vendor = ServerVendor(x_display);
881 bool vendor_found = false;
882 char line[256];
883 while (fgets(line, 255, f)) {
884 // Read line
885 int len = strlen(line);
886 if (len == 0)
887 continue;
888 line[len-1] = 0;
889
890 // Comments begin with "#" or ";"
891 if (line[0] == '#' || line[0] == ';' || line[0] == 0)
892 continue;
893
894 if (vendor_found) {
895 // Read keycode
896 int x_code, mac_code;
897 if (sscanf(line, "%d %d", &x_code, &mac_code) == 2)
898 keycode_table[x_code & 0xff] = mac_code;
899 else
900 break;
901 } else {
902 // Search for vendor string
903 if (strstr(vendor, line) == vendor)
904 vendor_found = true;
905 }
906 }
907
908 // Keycode file completely read
909 fclose(f);
910 use_keycodes = vendor_found;
911
912 // Vendor not found? Then display warning
913 if (!vendor_found) {
914 char str[256];
915 sprintf(str, GetString(STR_KEYCODE_VENDOR_WARN), vendor, kc_path ? kc_path : KEYCODE_FILE_NAME);
916 WarningAlert(str);
917 return;
918 }
919 }
920 }
921
922 bool VideoInitBuffer()
923 {
924 #ifdef ENABLE_VOSF
925 if (use_vosf) {
926 const uint32 page_size = getpagesize();
927 const uint32 page_mask = page_size - 1;
928
929 mainBuffer.memBase = (uint32) the_buffer;
930 // Align the frame buffer on page boundary
931 mainBuffer.memStart = (uint32)((((unsigned long) the_buffer) + page_mask) & ~page_mask);
932 mainBuffer.memLength = the_buffer_size;
933 mainBuffer.memEnd = mainBuffer.memStart + mainBuffer.memLength;
934
935 mainBuffer.pageSize = page_size;
936 mainBuffer.pageCount = (mainBuffer.memLength + page_mask)/mainBuffer.pageSize;
937 mainBuffer.pageBits = log_base_2(mainBuffer.pageSize);
938
939 if (mainBuffer.dirtyPages != 0)
940 free(mainBuffer.dirtyPages);
941
942 mainBuffer.dirtyPages = (char *) malloc(mainBuffer.pageCount + 2);
943
944 if (mainBuffer.pageInfo != 0)
945 free(mainBuffer.pageInfo);
946
947 mainBuffer.pageInfo = (ScreenPageInfo *) malloc(mainBuffer.pageCount * sizeof(ScreenPageInfo));
948
949 if ((mainBuffer.dirtyPages == 0) || (mainBuffer.pageInfo == 0))
950 return false;
951
952 mainBuffer.dirty = false;
953
954 PFLAG_CLEAR_ALL;
955 // Safety net to insure the loops in the update routines will terminate
956 // See a discussion in <video_vosf.h> for further details
957 PFLAG_CLEAR(mainBuffer.pageCount);
958 PFLAG_SET(mainBuffer.pageCount+1);
959
960 uint32 a = 0;
961 for (int i = 0; i < mainBuffer.pageCount; i++) {
962 int y1 = a / VideoMonitor.bytes_per_row;
963 if (y1 >= VideoMonitor.y)
964 y1 = VideoMonitor.y - 1;
965
966 int y2 = (a + mainBuffer.pageSize) / VideoMonitor.bytes_per_row;
967 if (y2 >= VideoMonitor.y)
968 y2 = VideoMonitor.y - 1;
969
970 mainBuffer.pageInfo[i].top = y1;
971 mainBuffer.pageInfo[i].bottom = y2;
972
973 a += mainBuffer.pageSize;
974 if (a > mainBuffer.memLength)
975 a = mainBuffer.memLength;
976 }
977
978 // We can now write-protect the frame buffer
979 if (mprotect((caddr_t)mainBuffer.memStart, mainBuffer.memLength, PROT_READ) != 0)
980 return false;
981 }
982 #endif
983 return true;
984 }
985
986 bool VideoInit(bool classic)
987 {
988 #ifdef ENABLE_VOSF
989 // Open /dev/zero
990 zero_fd = open("/dev/zero", O_RDWR);
991 if (zero_fd < 0) {
992 char str[256];
993 sprintf(str, GetString(STR_NO_DEV_ZERO_ERR), strerror(errno));
994 ErrorAlert(str);
995 return false;
996 }
997
998 // Zero the mainBuffer structure
999 mainBuffer.dirtyPages = 0;
1000 mainBuffer.pageInfo = 0;
1001 #endif
1002
1003 // Check if X server runs on local machine
1004 local_X11 = (strncmp(XDisplayName(x_display_name), ":", 1) == 0)
1005 || (strncmp(XDisplayName(x_display_name), "unix:", 5) == 0);
1006
1007 // Init keycode translation
1008 keycode_init();
1009
1010 // Read prefs
1011 mouse_wheel_mode = PrefsFindInt32("mousewheelmode");
1012 mouse_wheel_lines = PrefsFindInt32("mousewheellines");
1013
1014 // Find screen and root window
1015 screen = XDefaultScreen(x_display);
1016 rootwin = XRootWindow(x_display, screen);
1017
1018 // Get screen depth
1019 xdepth = DefaultDepth(x_display, screen);
1020
1021 #ifdef ENABLE_FBDEV_DGA
1022 // Frame buffer name
1023 char fb_name[20];
1024
1025 // Could do fbdev dga ?
1026 if ((fbdev_fd = open(FBDEVICE_FILE_NAME, O_RDWR)) != -1)
1027 has_dga = true;
1028 else
1029 has_dga = false;
1030 #endif
1031
1032 #ifdef ENABLE_XF86_DGA
1033 // DGA available?
1034 int dga_event_base, dga_error_base;
1035 if (local_X11 && XF86DGAQueryExtension(x_display, &dga_event_base, &dga_error_base)) {
1036 int dga_flags = 0;
1037 XF86DGAQueryDirectVideo(x_display, screen, &dga_flags);
1038 has_dga = dga_flags & XF86DGADirectPresent;
1039 } else
1040 has_dga = false;
1041 #endif
1042
1043 #ifdef ENABLE_XF86_VIDMODE
1044 // VidMode available?
1045 int vm_event_base, vm_error_base;
1046 has_vidmode = XF86VidModeQueryExtension(x_display, &vm_event_base, &vm_error_base);
1047 if (has_vidmode)
1048 XF86VidModeGetAllModeLines(x_display, screen, &num_x_video_modes, &x_video_modes);
1049 #endif
1050
1051 // Find black and white colors
1052 XParseColor(x_display, DefaultColormap(x_display, screen), "rgb:00/00/00", &black);
1053 XAllocColor(x_display, DefaultColormap(x_display, screen), &black);
1054 XParseColor(x_display, DefaultColormap(x_display, screen), "rgb:ff/ff/ff", &white);
1055 XAllocColor(x_display, DefaultColormap(x_display, screen), &white);
1056 black_pixel = BlackPixel(x_display, screen);
1057 white_pixel = WhitePixel(x_display, screen);
1058
1059 // Get appropriate visual
1060 int color_class;
1061 switch (xdepth) {
1062 case 1:
1063 color_class = StaticGray;
1064 break;
1065 case 8:
1066 color_class = PseudoColor;
1067 break;
1068 case 15:
1069 case 16:
1070 case 24:
1071 case 32:
1072 color_class = TrueColor;
1073 break;
1074 default:
1075 ErrorAlert(GetString(STR_UNSUPP_DEPTH_ERR));
1076 return false;
1077 }
1078 if (!XMatchVisualInfo(x_display, screen, xdepth, color_class, &visualInfo)) {
1079 ErrorAlert(GetString(STR_NO_XVISUAL_ERR));
1080 return false;
1081 }
1082 if (visualInfo.depth != xdepth) {
1083 ErrorAlert(GetString(STR_NO_XVISUAL_ERR));
1084 return false;
1085 }
1086 vis = visualInfo.visual;
1087
1088 // Mac screen depth is always 1 bit in Classic mode, but follows X depth otherwise
1089 classic_mode = classic;
1090 if (classic)
1091 depth = 1;
1092 else
1093 depth = xdepth;
1094
1095 // Create color maps for 8 bit mode
1096 if (depth == 8) {
1097 cmap[0] = XCreateColormap(x_display, rootwin, vis, AllocAll);
1098 cmap[1] = XCreateColormap(x_display, rootwin, vis, AllocAll);
1099 XInstallColormap(x_display, cmap[0]);
1100 XInstallColormap(x_display, cmap[1]);
1101 }
1102
1103 // Get screen mode from preferences
1104 const char *mode_str;
1105 if (classic)
1106 mode_str = "win/512/342";
1107 else
1108 mode_str = PrefsFindString("screen");
1109
1110 // Determine type and mode
1111 int width = 512, height = 384;
1112 display_type = DISPLAY_WINDOW;
1113 if (mode_str) {
1114 if (sscanf(mode_str, "win/%d/%d", &width, &height) == 2)
1115 display_type = DISPLAY_WINDOW;
1116 #ifdef ENABLE_FBDEV_DGA
1117 else if (has_dga && sscanf(mode_str, "dga/%19s", fb_name) == 1) {
1118 #else
1119 else if (has_dga && sscanf(mode_str, "dga/%d/%d", &width, &height) == 2) {
1120 #endif
1121 display_type = DISPLAY_DGA;
1122 if (width > DisplayWidth(x_display, screen))
1123 width = DisplayWidth(x_display, screen);
1124 if (height > DisplayHeight(x_display, screen))
1125 height = DisplayHeight(x_display, screen);
1126 }
1127 if (width <= 0)
1128 width = DisplayWidth(x_display, screen);
1129 if (height <= 0)
1130 height = DisplayHeight(x_display, screen);
1131 }
1132
1133 // Initialize according to display type
1134 switch (display_type) {
1135 case DISPLAY_WINDOW:
1136 if (!init_window(width, height))
1137 return false;
1138 break;
1139 case DISPLAY_DGA:
1140 #ifdef ENABLE_FBDEV_DGA
1141 if (!init_fbdev_dga(fb_name))
1142 #else
1143 if (!init_xf86_dga(width, height))
1144 #endif
1145 return false;
1146 break;
1147 }
1148
1149 // Lock down frame buffer
1150 LOCK_FRAME_BUFFER;
1151
1152 #if !REAL_ADDRESSING && !DIRECT_ADDRESSING
1153 // Set variables for UAE memory mapping
1154 MacFrameBaseHost = the_buffer;
1155 MacFrameSize = VideoMonitor.bytes_per_row * VideoMonitor.y;
1156
1157 // No special frame buffer in Classic mode (frame buffer is in Mac RAM)
1158 if (classic)
1159 MacFrameLayout = FLAYOUT_NONE;
1160 #endif
1161
1162 #ifdef ENABLE_VOSF
1163 if (use_vosf) {
1164 // Initialize the mainBuffer structure
1165 if (!VideoInitBuffer()) {
1166 // TODO: STR_VOSF_INIT_ERR ?
1167 ErrorAlert("Could not initialize Video on SEGV signals");
1168 return false;
1169 }
1170
1171 // Initialize the handler for SIGSEGV
1172 if (!sigsegv_install_handler(screen_fault_handler)) {
1173 // TODO: STR_VOSF_INIT_ERR ?
1174 ErrorAlert("Could not initialize Video on SEGV signals");
1175 return false;
1176 }
1177 }
1178 #endif
1179
1180 // Initialize VideoRefresh function
1181 VideoRefreshInit();
1182
1183 XSync(x_display, false);
1184
1185 #ifdef HAVE_PTHREADS
1186 // Start redraw/input thread
1187 redraw_thread_active = (pthread_create(&redraw_thread, NULL, redraw_func, NULL) == 0);
1188 if (!redraw_thread_active) {
1189 printf("FATAL: cannot create redraw thread\n");
1190 return false;
1191 }
1192 #endif
1193 return true;
1194 }
1195
1196
1197 /*
1198 * Deinitialization
1199 */
1200
1201 void VideoExit(void)
1202 {
1203 #ifdef HAVE_PTHREADS
1204 // Stop redraw thread
1205 if (redraw_thread_active) {
1206 redraw_thread_cancel = true;
1207 #ifdef HAVE_PTHREAD_CANCEL
1208 pthread_cancel(redraw_thread);
1209 #endif
1210 pthread_join(redraw_thread, NULL);
1211 redraw_thread_active = false;
1212 }
1213 #endif
1214
1215 // Unlock frame buffer
1216 UNLOCK_FRAME_BUFFER;
1217
1218 // Close window and server connection
1219 if (x_display != NULL) {
1220 XSync(x_display, false);
1221
1222 #ifdef ENABLE_XF86_DGA
1223 if (display_type == DISPLAY_DGA) {
1224 XF86DGADirectVideo(x_display, screen, 0);
1225 XUngrabPointer(x_display, CurrentTime);
1226 XUngrabKeyboard(x_display, CurrentTime);
1227 }
1228 #endif
1229
1230 #ifdef ENABLE_XF86_VIDMODE
1231 if (has_vidmode && display_type == DISPLAY_DGA)
1232 XF86VidModeSwitchToMode(x_display, screen, x_video_modes[0]);
1233 #endif
1234
1235 #ifdef ENABLE_FBDEV_DGA
1236 if (display_type == DISPLAY_DGA) {
1237 XUngrabPointer(x_display, CurrentTime);
1238 XUngrabKeyboard(x_display, CurrentTime);
1239 close(fbdev_fd);
1240 }
1241 #endif
1242
1243 XFlush(x_display);
1244 XSync(x_display, false);
1245 if (depth == 8) {
1246 XFreeColormap(x_display, cmap[0]);
1247 XFreeColormap(x_display, cmap[1]);
1248 }
1249
1250 if (!use_vosf) {
1251 if (the_buffer) {
1252 free(the_buffer);
1253 the_buffer = NULL;
1254 }
1255
1256 if (!have_shm && the_buffer_copy) {
1257 free(the_buffer_copy);
1258 the_buffer_copy = NULL;
1259 }
1260 }
1261 #ifdef ENABLE_VOSF
1262 else {
1263 if (the_buffer != (uint8 *)MAP_FAILED) {
1264 munmap((caddr_t)the_buffer, the_buffer_size);
1265 the_buffer = 0;
1266 }
1267
1268 if (the_buffer_copy != (uint8 *)MAP_FAILED) {
1269 munmap((caddr_t)the_buffer_copy, the_buffer_size);
1270 the_buffer_copy = 0;
1271 }
1272 }
1273 #endif
1274 }
1275
1276 #ifdef ENABLE_VOSF
1277 if (use_vosf) {
1278 // Clear mainBuffer data
1279 if (mainBuffer.pageInfo) {
1280 free(mainBuffer.pageInfo);
1281 mainBuffer.pageInfo = 0;
1282 }
1283
1284 if (mainBuffer.dirtyPages) {
1285 free(mainBuffer.dirtyPages);
1286 mainBuffer.dirtyPages = 0;
1287 }
1288 }
1289
1290 // Close /dev/zero
1291 if (zero_fd > 0)
1292 close(zero_fd);
1293 #endif
1294 }
1295
1296
1297 /*
1298 * Close down full-screen mode (if bringing up error alerts is unsafe while in full-screen mode)
1299 */
1300
1301 void VideoQuitFullScreen(void)
1302 {
1303 D(bug("VideoQuitFullScreen()\n"));
1304 if (display_type == DISPLAY_DGA)
1305 quit_full_screen = true;
1306 }
1307
1308
1309 /*
1310 * Mac VBL interrupt
1311 */
1312
1313 void VideoInterrupt(void)
1314 {
1315 // Emergency quit requested? Then quit
1316 if (emerg_quit)
1317 QuitEmulator();
1318
1319 // Temporarily give up frame buffer lock (this is the point where
1320 // we are suspended when the user presses Ctrl-Tab)
1321 UNLOCK_FRAME_BUFFER;
1322 LOCK_FRAME_BUFFER;
1323 }
1324
1325
1326 /*
1327 * Set palette
1328 */
1329
1330 void video_set_palette(uint8 *pal)
1331 {
1332 LOCK_PALETTE;
1333
1334 // Convert colors to XColor array
1335 for (int i=0; i<256; i++) {
1336 palette[i].pixel = i;
1337 palette[i].red = pal[i*3] * 0x0101;
1338 palette[i].green = pal[i*3+1] * 0x0101;
1339 palette[i].blue = pal[i*3+2] * 0x0101;
1340 palette[i].flags = DoRed | DoGreen | DoBlue;
1341 }
1342
1343 // Tell redraw thread to change palette
1344 palette_changed = true;
1345
1346 UNLOCK_PALETTE;
1347 }
1348
1349
1350 /*
1351 * Suspend/resume emulator
1352 */
1353
1354 #if defined(ENABLE_XF86_DGA) || defined(ENABLE_FBDEV_DGA)
1355 static void suspend_emul(void)
1356 {
1357 if (display_type == DISPLAY_DGA) {
1358 // Release ctrl key
1359 ADBKeyUp(0x36);
1360 ctrl_down = false;
1361
1362 // Lock frame buffer (this will stop the MacOS thread)
1363 LOCK_FRAME_BUFFER;
1364
1365 // Save frame buffer
1366 fb_save = malloc(VideoMonitor.y * VideoMonitor.bytes_per_row);
1367 if (fb_save)
1368 memcpy(fb_save, the_buffer, VideoMonitor.y * VideoMonitor.bytes_per_row);
1369
1370 // Close full screen display
1371 #ifdef ENABLE_XF86_DGA
1372 XF86DGADirectVideo(x_display, screen, 0);
1373 #endif
1374 XUngrabPointer(x_display, CurrentTime);
1375 XUngrabKeyboard(x_display, CurrentTime);
1376 XUnmapWindow(x_display, the_win);
1377 wait_unmapped(the_win);
1378
1379 // Open "suspend" window
1380 XSetWindowAttributes wattr;
1381 wattr.event_mask = KeyPressMask;
1382 wattr.background_pixel = black_pixel;
1383
1384 suspend_win = XCreateWindow(x_display, rootwin, 0, 0, 512, 1, 0, xdepth,
1385 InputOutput, vis, CWEventMask | CWBackPixel, &wattr);
1386 set_window_name(suspend_win, STR_SUSPEND_WINDOW_TITLE);
1387 set_window_focus(suspend_win);
1388 XMapWindow(x_display, suspend_win);
1389 emul_suspended = true;
1390 }
1391 }
1392
1393 static void resume_emul(void)
1394 {
1395 // Close "suspend" window
1396 XDestroyWindow(x_display, suspend_win);
1397 XSync(x_display, false);
1398
1399 // Reopen full screen display
1400 XMapRaised(x_display, the_win);
1401 wait_mapped(the_win);
1402 XWarpPointer(x_display, None, rootwin, 0, 0, 0, 0, 0, 0);
1403 XGrabKeyboard(x_display, rootwin, 1, GrabModeAsync, GrabModeAsync, CurrentTime);
1404 XGrabPointer(x_display, rootwin, 1, PointerMotionMask | ButtonPressMask | ButtonReleaseMask, GrabModeAsync, GrabModeAsync, None, None, CurrentTime);
1405 #ifdef ENABLE_XF86_DGA
1406 XF86DGADirectVideo(x_display, screen, XF86DGADirectGraphics | XF86DGADirectKeyb | XF86DGADirectMouse);
1407 XF86DGASetViewPort(x_display, screen, 0, 0);
1408 #endif
1409 XSync(x_display, false);
1410
1411 // the_buffer already contains the data to restore. i.e. since a temporary
1412 // frame buffer is used when VOSF is actually used, fb_save is therefore
1413 // not necessary.
1414 #ifdef ENABLE_VOSF
1415 if (use_vosf) {
1416 LOCK_VOSF;
1417 PFLAG_SET_ALL;
1418 UNLOCK_VOSF;
1419 memset(the_buffer_copy, 0, VideoMonitor.bytes_per_row * VideoMonitor.y);
1420 }
1421 #endif
1422
1423 // Restore frame buffer
1424 if (fb_save) {
1425 #ifdef ENABLE_VOSF
1426 // Don't copy fb_save to the temporary frame buffer in VOSF mode
1427 if (!use_vosf)
1428 #endif
1429 memcpy(the_buffer, fb_save, VideoMonitor.y * VideoMonitor.bytes_per_row);
1430 free(fb_save);
1431 fb_save = NULL;
1432 }
1433
1434 #ifdef ENABLE_XF86_DGA
1435 if (depth == 8)
1436 XF86DGAInstallColormap(x_display, screen, cmap[current_dga_cmap]);
1437 #endif
1438
1439 // Unlock frame buffer (and continue MacOS thread)
1440 UNLOCK_FRAME_BUFFER;
1441 emul_suspended = false;
1442 }
1443 #endif
1444
1445
1446 /*
1447 * Translate key event to Mac keycode
1448 */
1449
1450 static int kc_decode(KeySym ks)
1451 {
1452 switch (ks) {
1453 case XK_A: case XK_a: return 0x00;
1454 case XK_B: case XK_b: return 0x0b;
1455 case XK_C: case XK_c: return 0x08;
1456 case XK_D: case XK_d: return 0x02;
1457 case XK_E: case XK_e: return 0x0e;
1458 case XK_F: case XK_f: return 0x03;
1459 case XK_G: case XK_g: return 0x05;
1460 case XK_H: case XK_h: return 0x04;
1461 case XK_I: case XK_i: return 0x22;
1462 case XK_J: case XK_j: return 0x26;
1463 case XK_K: case XK_k: return 0x28;
1464 case XK_L: case XK_l: return 0x25;
1465 case XK_M: case XK_m: return 0x2e;
1466 case XK_N: case XK_n: return 0x2d;
1467 case XK_O: case XK_o: return 0x1f;
1468 case XK_P: case XK_p: return 0x23;
1469 case XK_Q: case XK_q: return 0x0c;
1470 case XK_R: case XK_r: return 0x0f;
1471 case XK_S: case XK_s: return 0x01;
1472 case XK_T: case XK_t: return 0x11;
1473 case XK_U: case XK_u: return 0x20;
1474 case XK_V: case XK_v: return 0x09;
1475 case XK_W: case XK_w: return 0x0d;
1476 case XK_X: case XK_x: return 0x07;
1477 case XK_Y: case XK_y: return 0x10;
1478 case XK_Z: case XK_z: return 0x06;
1479
1480 case XK_1: case XK_exclam: return 0x12;
1481 case XK_2: case XK_at: return 0x13;
1482 case XK_3: case XK_numbersign: return 0x14;
1483 case XK_4: case XK_dollar: return 0x15;
1484 case XK_5: case XK_percent: return 0x17;
1485 case XK_6: return 0x16;
1486 case XK_7: return 0x1a;
1487 case XK_8: return 0x1c;
1488 case XK_9: return 0x19;
1489 case XK_0: return 0x1d;
1490
1491 case XK_grave: case XK_asciitilde: return 0x0a;
1492 case XK_minus: case XK_underscore: return 0x1b;
1493 case XK_equal: case XK_plus: return 0x18;
1494 case XK_bracketleft: case XK_braceleft: return 0x21;
1495 case XK_bracketright: case XK_braceright: return 0x1e;
1496 case XK_backslash: case XK_bar: return 0x2a;
1497 case XK_semicolon: case XK_colon: return 0x29;
1498 case XK_apostrophe: case XK_quotedbl: return 0x27;
1499 case XK_comma: case XK_less: return 0x2b;
1500 case XK_period: case XK_greater: return 0x2f;
1501 case XK_slash: case XK_question: return 0x2c;
1502
1503 #if defined(ENABLE_XF86_DGA) || defined(ENABLE_FBDEV_DGA)
1504 case XK_Tab: if (ctrl_down) {suspend_emul(); return -1;} else return 0x30;
1505 #else
1506 case XK_Tab: return 0x30;
1507 #endif
1508 case XK_Return: return 0x24;
1509 case XK_space: return 0x31;
1510 case XK_BackSpace: return 0x33;
1511
1512 case XK_Delete: return 0x75;
1513 case XK_Insert: return 0x72;
1514 case XK_Home: case XK_Help: return 0x73;
1515 case XK_End: return 0x77;
1516 #ifdef __hpux
1517 case XK_Prior: return 0x74;
1518 case XK_Next: return 0x79;
1519 #else
1520 case XK_Page_Up: return 0x74;
1521 case XK_Page_Down: return 0x79;
1522 #endif
1523
1524 case XK_Control_L: return 0x36;
1525 case XK_Control_R: return 0x36;
1526 case XK_Shift_L: return 0x38;
1527 case XK_Shift_R: return 0x38;
1528 case XK_Alt_L: return 0x37;
1529 case XK_Alt_R: return 0x37;
1530 case XK_Meta_L: return 0x3a;
1531 case XK_Meta_R: return 0x3a;
1532 case XK_Menu: return 0x32;
1533 case XK_Caps_Lock: return 0x39;
1534 case XK_Num_Lock: return 0x47;
1535
1536 case XK_Up: return 0x3e;
1537 case XK_Down: return 0x3d;
1538 case XK_Left: return 0x3b;
1539 case XK_Right: return 0x3c;
1540
1541 case XK_Escape: if (ctrl_down) {quit_full_screen = true; emerg_quit = true; return -1;} else return 0x35;
1542
1543 case XK_F1: if (ctrl_down) {SysMountFirstFloppy(); return -1;} else return 0x7a;
1544 case XK_F2: return 0x78;
1545 case XK_F3: return 0x63;
1546 case XK_F4: return 0x76;
1547 case XK_F5: return 0x60;
1548 case XK_F6: return 0x61;
1549 case XK_F7: return 0x62;
1550 case XK_F8: return 0x64;
1551 case XK_F9: return 0x65;
1552 case XK_F10: return 0x6d;
1553 case XK_F11: return 0x67;
1554 case XK_F12: return 0x6f;
1555
1556 case XK_Print: return 0x69;
1557 case XK_Scroll_Lock: return 0x6b;
1558 case XK_Pause: return 0x71;
1559
1560 #if defined(XK_KP_Prior) && defined(XK_KP_Left) && defined(XK_KP_Insert) && defined (XK_KP_End)
1561 case XK_KP_0: case XK_KP_Insert: return 0x52;
1562 case XK_KP_1: case XK_KP_End: return 0x53;
1563 case XK_KP_2: case XK_KP_Down: return 0x54;
1564 case XK_KP_3: case XK_KP_Next: return 0x55;
1565 case XK_KP_4: case XK_KP_Left: return 0x56;
1566 case XK_KP_5: case XK_KP_Begin: return 0x57;
1567 case XK_KP_6: case XK_KP_Right: return 0x58;
1568 case XK_KP_7: case XK_KP_Home: return 0x59;
1569 case XK_KP_8: case XK_KP_Up: return 0x5b;
1570 case XK_KP_9: case XK_KP_Prior: return 0x5c;
1571 case XK_KP_Decimal: case XK_KP_Delete: return 0x41;
1572 #else
1573 case XK_KP_0: return 0x52;
1574 case XK_KP_1: return 0x53;
1575 case XK_KP_2: return 0x54;
1576 case XK_KP_3: return 0x55;
1577 case XK_KP_4: return 0x56;
1578 case XK_KP_5: return 0x57;
1579 case XK_KP_6: return 0x58;
1580 case XK_KP_7: return 0x59;
1581 case XK_KP_8: return 0x5b;
1582 case XK_KP_9: return 0x5c;
1583 case XK_KP_Decimal: return 0x41;
1584 #endif
1585 case XK_KP_Add: return 0x45;
1586 case XK_KP_Subtract: return 0x4e;
1587 case XK_KP_Multiply: return 0x43;
1588 case XK_KP_Divide: return 0x4b;
1589 case XK_KP_Enter: return 0x4c;
1590 case XK_KP_Equal: return 0x51;
1591 }
1592 return -1;
1593 }
1594
1595 static int event2keycode(XKeyEvent &ev)
1596 {
1597 KeySym ks;
1598 int as;
1599 int i = 0;
1600
1601 do {
1602 ks = XLookupKeysym(&ev, i++);
1603 as = kc_decode(ks);
1604 if (as != -1)
1605 return as;
1606 } while (ks != NoSymbol);
1607
1608 return -1;
1609 }
1610
1611
1612 /*
1613 * X event handling
1614 */
1615
1616 static void handle_events(void)
1617 {
1618 while (XPending(x_display)) {
1619 XEvent event;
1620 XNextEvent(x_display, &event);
1621
1622 switch (event.type) {
1623 // Mouse button
1624 case ButtonPress: {
1625 unsigned int button = event.xbutton.button;
1626 if (button < 4)
1627 ADBMouseDown(button - 1);
1628 else if (button < 6) { // Wheel mouse
1629 if (mouse_wheel_mode == 0) {
1630 int key = (button == 5) ? 0x79 : 0x74; // Page up/down
1631 ADBKeyDown(key);
1632 ADBKeyUp(key);
1633 } else {
1634 int key = (button == 5) ? 0x3d : 0x3e; // Cursor up/down
1635 for(int i=0; i<mouse_wheel_lines; i++) {
1636 ADBKeyDown(key);
1637 ADBKeyUp(key);
1638 }
1639 }
1640 }
1641 break;
1642 }
1643 case ButtonRelease: {
1644 unsigned int button = event.xbutton.button;
1645 if (button < 4)
1646 ADBMouseUp(button - 1);
1647 break;
1648 }
1649
1650 // Mouse moved
1651 case EnterNotify:
1652 case MotionNotify:
1653 ADBMouseMoved(event.xmotion.x, event.xmotion.y);
1654 break;
1655
1656 // Keyboard
1657 case KeyPress: {
1658 int code;
1659 if (use_keycodes) {
1660 event2keycode(event.xkey); // This is called to process the hotkeys
1661 code = keycode_table[event.xkey.keycode & 0xff];
1662 } else
1663 code = event2keycode(event.xkey);
1664 if (code != -1) {
1665 if (!emul_suspended) {
1666 if (code == 0x39) { // Caps Lock pressed
1667 if (caps_on) {
1668 ADBKeyUp(code);
1669 caps_on = false;
1670 } else {
1671 ADBKeyDown(code);
1672 caps_on = true;
1673 }
1674 } else
1675 ADBKeyDown(code);
1676 if (code == 0x36)
1677 ctrl_down = true;
1678 } else {
1679 #if defined(ENABLE_XF86_DGA) || defined(ENABLE_FBDEV_DGA)
1680 if (code == 0x31)
1681 resume_emul(); // Space wakes us up
1682 #endif
1683 }
1684 }
1685 break;
1686 }
1687 case KeyRelease: {
1688 int code;
1689 if (use_keycodes) {
1690 event2keycode(event.xkey); // This is called to process the hotkeys
1691 code = keycode_table[event.xkey.keycode & 0xff];
1692 } else
1693 code = event2keycode(event.xkey);
1694 if (code != -1 && code != 0x39) { // Don't propagate Caps Lock releases
1695 ADBKeyUp(code);
1696 if (code == 0x36)
1697 ctrl_down = false;
1698 }
1699 break;
1700 }
1701
1702 // Hidden parts exposed, force complete refresh of window
1703 case Expose:
1704 if (display_type == DISPLAY_WINDOW) {
1705 #ifdef ENABLE_VOSF
1706 if (use_vosf) { // VOSF refresh
1707 LOCK_VOSF;
1708 PFLAG_SET_ALL;
1709 UNLOCK_VOSF;
1710 memset(the_buffer_copy, 0, VideoMonitor.bytes_per_row * VideoMonitor.y);
1711 }
1712 else
1713 #endif
1714 if (frame_skip == 0) { // Dynamic refresh
1715 int x1, y1;
1716 for (y1=0; y1<16; y1++)
1717 for (x1=0; x1<16; x1++)
1718 updt_box[x1][y1] = true;
1719 nr_boxes = 16 * 16;
1720 } else // Static refresh
1721 memset(the_buffer_copy, 0, VideoMonitor.bytes_per_row * VideoMonitor.y);
1722 }
1723 break;
1724
1725 // Window "close" widget clicked
1726 case ClientMessage:
1727 if (event.xclient.format == 32 && event.xclient.data.l[0] == WM_DELETE_WINDOW) {
1728 ADBKeyDown(0x7f); // Power key
1729 ADBKeyUp(0x7f);
1730 }
1731 break;
1732 }
1733 }
1734 }
1735
1736
1737 /*
1738 * Window display update
1739 */
1740
1741 // Dynamic display update (variable frame rate for each box)
1742 static void update_display_dynamic(int ticker)
1743 {
1744 int y1, y2, y2s, y2a, i, x1, xm, xmo, ymo, yo, yi, yil, xi;
1745 int xil = 0;
1746 int rxm = 0, rxmo = 0;
1747 int bytes_per_row = VideoMonitor.bytes_per_row;
1748 int bytes_per_pixel = VideoMonitor.bytes_per_row / VideoMonitor.x;
1749 int rx = VideoMonitor.bytes_per_row / 16;
1750 int ry = VideoMonitor.y / 16;
1751 int max_box;
1752
1753 y2s = sm_uptd[ticker % 8];
1754 y2a = 8;
1755 for (i = 0; i < 6; i++)
1756 if (ticker % (2 << i))
1757 break;
1758 max_box = sm_no_boxes[i];
1759
1760 if (y2a) {
1761 for (y1=0; y1<16; y1++) {
1762 for (y2=y2s; y2 < ry; y2 += y2a) {
1763 i = ((y1 * ry) + y2) * bytes_per_row;
1764 for (x1=0; x1<16; x1++, i += rx) {
1765 if (updt_box[x1][y1] == false) {
1766 if (memcmp(&the_buffer_copy[i], &the_buffer[i], rx)) {
1767 updt_box[x1][y1] = true;
1768 nr_boxes++;
1769 }
1770 }
1771 }
1772 }
1773 }
1774 }
1775
1776 if ((nr_boxes <= max_box) && (nr_boxes)) {
1777 for (y1=0; y1<16; y1++) {
1778 for (x1=0; x1<16; x1++) {
1779 if (updt_box[x1][y1] == true) {
1780 if (rxm == 0)
1781 xm = x1;
1782 rxm += rx;
1783 updt_box[x1][y1] = false;
1784 }
1785 if (((updt_box[x1+1][y1] == false) || (x1 == 15)) && (rxm)) {
1786 if ((rxmo != rxm) || (xmo != xm) || (yo != y1 - 1)) {
1787 if (rxmo) {
1788 xi = xmo * rx;
1789 yi = ymo * ry;
1790 xil = rxmo;
1791 yil = (yo - ymo +1) * ry;
1792 }
1793 rxmo = rxm;
1794 xmo = xm;
1795 ymo = y1;
1796 }
1797 rxm = 0;
1798 yo = y1;
1799 }
1800 if (xil) {
1801 i = (yi * bytes_per_row) + xi;
1802 for (y2=0; y2 < yil; y2++, i += bytes_per_row)
1803 memcpy(&the_buffer_copy[i], &the_buffer[i], xil);
1804 if (depth == 1) {
1805 if (have_shm)
1806 XShmPutImage(x_display, the_win, the_gc, img, xi * 8, yi, xi * 8, yi, xil * 8, yil, 0);
1807 else
1808 XPutImage(x_display, the_win, the_gc, img, xi * 8, yi, xi * 8, yi, xil * 8, yil);
1809 } else {
1810 if (have_shm)
1811 XShmPutImage(x_display, the_win, the_gc, img, xi / bytes_per_pixel, yi, xi / bytes_per_pixel, yi, xil / bytes_per_pixel, yil, 0);
1812 else
1813 XPutImage(x_display, the_win, the_gc, img, xi / bytes_per_pixel, yi, xi / bytes_per_pixel, yi, xil / bytes_per_pixel, yil);
1814 }
1815 xil = 0;
1816 }
1817 if ((x1 == 15) && (y1 == 15) && (rxmo)) {
1818 x1--;
1819 xi = xmo * rx;
1820 yi = ymo * ry;
1821 xil = rxmo;
1822 yil = (yo - ymo +1) * ry;
1823 rxmo = 0;
1824 }
1825 }
1826 }
1827 nr_boxes = 0;
1828 }
1829 }
1830
1831 // Static display update (fixed frame rate, but incremental)
1832 static void update_display_static(void)
1833 {
1834 // Incremental update code
1835 int wide = 0, high = 0, x1, x2, y1, y2, i, j;
1836 int bytes_per_row = VideoMonitor.bytes_per_row;
1837 int bytes_per_pixel = VideoMonitor.bytes_per_row / VideoMonitor.x;
1838 uint8 *p, *p2;
1839
1840 // Check for first line from top and first line from bottom that have changed
1841 y1 = 0;
1842 for (j=0; j<VideoMonitor.y; j++) {
1843 if (memcmp(&the_buffer[j * bytes_per_row], &the_buffer_copy[j * bytes_per_row], bytes_per_row)) {
1844 y1 = j;
1845 break;
1846 }
1847 }
1848 y2 = y1 - 1;
1849 for (j=VideoMonitor.y-1; j>=y1; j--) {
1850 if (memcmp(&the_buffer[j * bytes_per_row], &the_buffer_copy[j * bytes_per_row], bytes_per_row)) {
1851 y2 = j;
1852 break;
1853 }
1854 }
1855 high = y2 - y1 + 1;
1856
1857 // Check for first column from left and first column from right that have changed
1858 if (high) {
1859 if (depth == 1) {
1860 x1 = VideoMonitor.x - 1;
1861 for (j=y1; j<=y2; j++) {
1862 p = &the_buffer[j * bytes_per_row];
1863 p2 = &the_buffer_copy[j * bytes_per_row];
1864 for (i=0; i<(x1>>3); i++) {
1865 if (*p != *p2) {
1866 x1 = i << 3;
1867 break;
1868 }
1869 p++; p2++;
1870 }
1871 }
1872 x2 = x1;
1873 for (j=y1; j<=y2; j++) {
1874 p = &the_buffer[j * bytes_per_row];
1875 p2 = &the_buffer_copy[j * bytes_per_row];
1876 p += bytes_per_row;
1877 p2 += bytes_per_row;
1878 for (i=(VideoMonitor.x>>3); i>(x2>>3); i--) {
1879 p--; p2--;
1880 if (*p != *p2) {
1881 x2 = (i << 3) + 7;
1882 break;
1883 }
1884 }
1885 }
1886 wide = x2 - x1 + 1;
1887
1888 // Update copy of the_buffer
1889 if (high && wide) {
1890 for (j=y1; j<=y2; j++) {
1891 i = j * bytes_per_row + (x1 >> 3);
1892 memcpy(the_buffer_copy + i, the_buffer + i, wide >> 3);
1893 }
1894 }
1895
1896 } else {
1897 x1 = VideoMonitor.x;
1898 for (j=y1; j<=y2; j++) {
1899 p = &the_buffer[j * bytes_per_row];
1900 p2 = &the_buffer_copy[j * bytes_per_row];
1901 for (i=0; i<x1*bytes_per_pixel; i++) {
1902 if (*p != *p2) {
1903 x1 = i / bytes_per_pixel;
1904 break;
1905 }
1906 p++; p2++;
1907 }
1908 }
1909 x2 = x1;
1910 for (j=y1; j<=y2; j++) {
1911 p = &the_buffer[j * bytes_per_row];
1912 p2 = &the_buffer_copy[j * bytes_per_row];
1913 p += bytes_per_row;
1914 p2 += bytes_per_row;
1915 for (i=VideoMonitor.x*bytes_per_pixel; i>x2*bytes_per_pixel; i--) {
1916 p--;
1917 p2--;
1918 if (*p != *p2) {
1919 x2 = i / bytes_per_pixel;
1920 break;
1921 }
1922 }
1923 }
1924 wide = x2 - x1;
1925
1926 // Update copy of the_buffer
1927 if (high && wide) {
1928 for (j=y1; j<=y2; j++) {
1929 i = j * bytes_per_row + x1 * bytes_per_pixel;
1930 memcpy(the_buffer_copy + i, the_buffer + i, bytes_per_pixel * wide);
1931 }
1932 }
1933 }
1934 }
1935
1936 // Refresh display
1937 if (high && wide) {
1938 if (have_shm)
1939 XShmPutImage(x_display, the_win, the_gc, img, x1, y1, x1, y1, wide, high, 0);
1940 else
1941 XPutImage(x_display, the_win, the_gc, img, x1, y1, x1, y1, wide, high);
1942 }
1943 }
1944
1945
1946 /*
1947 * Screen refresh functions
1948 */
1949
1950 // We suggest the compiler to inline the next two functions so that it
1951 // may specialise the code according to the current screen depth and
1952 // display type. A clever compiler would do that job by itself though...
1953
1954 // NOTE: update_display_vosf is inlined too
1955
1956 static inline void possibly_quit_dga_mode()
1957 {
1958 #if defined(ENABLE_XF86_DGA) || defined(ENABLE_FBDEV_DGA)
1959 // Quit DGA mode if requested
1960 if (quit_full_screen) {
1961 quit_full_screen = false;
1962 #ifdef ENABLE_XF86_DGA
1963 XF86DGADirectVideo(x_display, screen, 0);
1964 #endif
1965 XUngrabPointer(x_display, CurrentTime);
1966 XUngrabKeyboard(x_display, CurrentTime);
1967 XUnmapWindow(x_display, the_win);
1968 XSync(x_display, false);
1969 }
1970 #endif
1971 }
1972
1973 static inline void handle_palette_changes(int depth, int display_type)
1974 {
1975 LOCK_PALETTE;
1976
1977 if (palette_changed) {
1978 palette_changed = false;
1979 if (depth == 8) {
1980 XStoreColors(x_display, cmap[0], palette, 256);
1981 XStoreColors(x_display, cmap[1], palette, 256);
1982 XSync(x_display, false);
1983
1984 #ifdef ENABLE_XF86_DGA
1985 if (display_type == DISPLAY_DGA) {
1986 current_dga_cmap ^= 1;
1987 XF86DGAInstallColormap(x_display, screen, cmap[current_dga_cmap]);
1988 }
1989 #endif
1990 }
1991 }
1992
1993 UNLOCK_PALETTE;
1994 }
1995
1996 static void video_refresh_dga(void)
1997 {
1998 // Quit DGA mode if requested
1999 possibly_quit_dga_mode();
2000
2001 // Handle X events
2002 handle_events();
2003
2004 // Handle palette changes
2005 handle_palette_changes(depth, DISPLAY_DGA);
2006 }
2007
2008 #ifdef ENABLE_VOSF
2009 #if REAL_ADDRESSING || DIRECT_ADDRESSING
2010 static void video_refresh_dga_vosf(void)
2011 {
2012 // Quit DGA mode if requested
2013 possibly_quit_dga_mode();
2014
2015 // Handle X events
2016 handle_events();
2017
2018 // Handle palette changes
2019 handle_palette_changes(depth, DISPLAY_DGA);
2020
2021 // Update display (VOSF variant)
2022 static int tick_counter = 0;
2023 if (++tick_counter >= frame_skip) {
2024 tick_counter = 0;
2025 if (mainBuffer.dirty) {
2026 LOCK_VOSF;
2027 update_display_dga_vosf();
2028 UNLOCK_VOSF;
2029 }
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 if (mainBuffer.dirty) {
2050 LOCK_VOSF;
2051 update_display_window_vosf();
2052 UNLOCK_VOSF;
2053 XSync(x_display, false); // Let the server catch up
2054 }
2055 }
2056 }
2057 #endif // def ENABLE_VOSF
2058
2059 static void video_refresh_window_static(void)
2060 {
2061 // Handle X events
2062 handle_events();
2063
2064 // Handle_palette changes
2065 handle_palette_changes(depth, DISPLAY_WINDOW);
2066
2067 // Update display (static variant)
2068 static int tick_counter = 0;
2069 if (++tick_counter >= frame_skip) {
2070 tick_counter = 0;
2071 update_display_static();
2072 }
2073 }
2074
2075 static void video_refresh_window_dynamic(void)
2076 {
2077 // Handle X events
2078 handle_events();
2079
2080 // Handle_palette changes
2081 handle_palette_changes(depth, DISPLAY_WINDOW);
2082
2083 // Update display (dynamic variant)
2084 static int tick_counter = 0;
2085 tick_counter++;
2086 update_display_dynamic(tick_counter);
2087 }
2088
2089
2090 /*
2091 * Thread for screen refresh, input handling etc.
2092 */
2093
2094 void VideoRefreshInit(void)
2095 {
2096 // TODO: set up specialised 8bpp VideoRefresh handlers ?
2097 if (display_type == DISPLAY_DGA) {
2098 #if ENABLE_VOSF && (REAL_ADDRESSING || DIRECT_ADDRESSING)
2099 if (use_vosf)
2100 video_refresh = video_refresh_dga_vosf;
2101 else
2102 #endif
2103 video_refresh = video_refresh_dga;
2104 }
2105 else {
2106 #ifdef ENABLE_VOSF
2107 if (use_vosf)
2108 video_refresh = video_refresh_window_vosf;
2109 else
2110 #endif
2111 if (frame_skip == 0)
2112 video_refresh = video_refresh_window_dynamic;
2113 else
2114 video_refresh = video_refresh_window_static;
2115 }
2116 }
2117
2118 void VideoRefresh(void)
2119 {
2120 // TODO: make main_unix/VideoRefresh call directly video_refresh() ?
2121 video_refresh();
2122 }
2123
2124 #ifdef HAVE_PTHREADS
2125 static void *redraw_func(void *arg)
2126 {
2127 uint64 start = GetTicks_usec();
2128 int64 ticks = 0;
2129 uint64 next = GetTicks_usec();
2130 while (!redraw_thread_cancel) {
2131 video_refresh();
2132 next += 16667;
2133 int64 delay = next - GetTicks_usec();
2134 if (delay > 0)
2135 Delay_usec(delay);
2136 else if (delay < -16667)
2137 next = GetTicks_usec();
2138 ticks++;
2139 }
2140 uint64 end = GetTicks_usec();
2141 // printf("%Ld ticks in %Ld usec = %Ld ticks/sec\n", ticks, end - start, ticks * 1000000 / (end - start));
2142 return NULL;
2143 }
2144 #endif