Files @ r8922:4018defc583d
Branch filter:

Location: cpp/openttd-patchpack/source/src/video/cocoa/fullscreen.mm

rubidium
(svn r12692) -Codechange: swap to functions to remove a function declaration.
  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
/* $Id$ */

/******************************************************************************
 *                             Cocoa video driver                             *
 * Known things left to do:                                                   *
 *  Scale&copy the old pixel buffer to the new one when switching resolution. *
 ******************************************************************************/

#ifdef WITH_COCOA

#define MAC_OS_X_VERSION_MIN_REQUIRED    MAC_OS_X_VERSION_10_3
#include <AvailabilityMacros.h>

#import <Cocoa/Cocoa.h>
#import <sys/time.h> /* gettimeofday */
#import <sys/param.h> /* for MAXPATHLEN */
#import <unistd.h>

/**
 * Important notice regarding all modifications!!!!!!!
 * There are certain limitations because the file is objective C++.
 * gdb has limitations.
 * C++ and objective C code can't be joined in all cases (classes stuff).
 * Read http://developer.apple.com/releasenotes/Cocoa/Objective-C++.html for more information.
 */


/* From Menus.h (according to Xcode Developer Documentation) */
extern "C" void ShowMenuBar();
extern "C" void HideMenuBar();

/* Defined in stdbool.h */
#ifndef __cplusplus
# ifndef __BEOS__
#  undef bool
#  undef false
#  undef true
# endif
#endif


#include "../../stdafx.h"
#include "../../debug.h"
#include "../../core/geometry_type.hpp"
#include "cocoa_v.h"
#include "../../gfx_func.h"

#undef Rect


/* Structure for rez switch gamma fades
 * We can hide the monitor flicker by setting the gamma tables to 0
 */
#define QZ_GAMMA_TABLE_SIZE 256

struct OTTD_QuartzGammaTable {
	CGGammaValue red[QZ_GAMMA_TABLE_SIZE];
	CGGammaValue green[QZ_GAMMA_TABLE_SIZE];
	CGGammaValue blue[QZ_GAMMA_TABLE_SIZE];
};

/* Add methods to get at private members of NSScreen.
 * Since there is a bug in Apple's screen switching code that does not update
 * this variable when switching to fullscreen, we'll set it manually (but only
 * for the main screen).
 */
@interface NSScreen (NSScreenAccess)
	- (void) setFrame:(NSRect)frame;
@end

@implementation NSScreen (NSScreenAccess)
- (void) setFrame:(NSRect)frame;
{
	_frame = frame;
}
@end



uint QZ_ListModes(OTTD_Point* modes, uint max_modes, CGDirectDisplayID display_id, int display_depth)
{
	CFArrayRef mode_list;
	CFIndex num_modes;
	CFIndex i;
	uint count = 0;

	mode_list  = CGDisplayAvailableModes(display_id);
	num_modes = CFArrayGetCount(mode_list);

	/* Build list of modes with the requested bpp */
	for (i = 0; i < num_modes && count < max_modes; i++) {
		CFDictionaryRef onemode;
		CFNumberRef     number;
		int bpp;
		int intvalue;
		bool hasMode;
		uint16 width, height;

		onemode = (const __CFDictionary*)CFArrayGetValueAtIndex(mode_list, i);
		number = (const __CFNumber*)CFDictionaryGetValue(onemode, kCGDisplayBitsPerPixel);
		CFNumberGetValue (number, kCFNumberSInt32Type, &bpp);

		if (bpp != display_depth) continue;

		number = (const __CFNumber*)CFDictionaryGetValue(onemode, kCGDisplayWidth);
		CFNumberGetValue(number, kCFNumberSInt32Type, &intvalue);
		width = (uint16)intvalue;

		number = (const __CFNumber*)CFDictionaryGetValue(onemode, kCGDisplayHeight);
		CFNumberGetValue(number, kCFNumberSInt32Type, &intvalue);
		height = (uint16)intvalue;

		/* Check if mode is already in the list */
		{
			uint i;
			hasMode = false;
			for (i = 0; i < count; i++) {
				if (modes[i].x == width &&  modes[i].y == height) {
					hasMode = true;
					break;
				}
			}
		}

		if (hasMode) continue;

		/* Add mode to the list */
		modes[count].x = width;
		modes[count].y = height;
		count++;
	}

	/* Sort list smallest to largest */
	{
		uint i, j;
		for (i = 0; i < count; i++) {
			for (j = 0; j < count-1; j++) {
				if (modes[j].x > modes[j + 1].x || (
					modes[j].x == modes[j + 1].x &&
					modes[j].y >  modes[j + 1].y
					)) {
					uint tmpw = modes[j].x;
					uint tmph = modes[j].y;

					modes[j].x = modes[j + 1].x;
					modes[j].y = modes[j + 1].y;

					modes[j + 1].x = tmpw;
					modes[j + 1].y = tmph;
				}
			}
		}
	}

	return count;
}


class FullscreenSubdriver: public CocoaSubdriver {
	int                display_width;
	int                display_height;
	int                display_depth;
	int                screen_pitch;
	void*              screen_buffer;
	void*              pixel_buffer;

	CGDirectDisplayID  display_id;         /* 0 == main display (only support single display) */
	CFDictionaryRef    cur_mode;           /* current mode of the display */
	CFDictionaryRef    save_mode;          /* original mode of the display */
	CGDirectPaletteRef palette;            /* palette of an 8-bit display */

	#define MAX_DIRTY_RECTS 100
	Rect dirty_rects[MAX_DIRTY_RECTS];
	int num_dirty_rects;


	/* Gamma functions to try to hide the flash from a rez switch
	 * Fade the display from normal to black
	 * Save gamma tables for fade back to normal
	 */
	uint32 FadeGammaOut(OTTD_QuartzGammaTable* table)
	{
		CGGammaValue redTable[QZ_GAMMA_TABLE_SIZE];
		CGGammaValue greenTable[QZ_GAMMA_TABLE_SIZE];
		CGGammaValue blueTable[QZ_GAMMA_TABLE_SIZE];
		float percent;
		int j;
		unsigned int actual;

		if (CGGetDisplayTransferByTable(
					display_id, QZ_GAMMA_TABLE_SIZE,
					table->red, table->green, table->blue, &actual
				) != CGDisplayNoErr ||
				actual != QZ_GAMMA_TABLE_SIZE) {
			return 1;
		}

		memcpy(redTable,   table->red,   sizeof(redTable));
		memcpy(greenTable, table->green, sizeof(greenTable));
		memcpy(blueTable,  table->blue,  sizeof(greenTable));

		for (percent = 1.0; percent >= 0.0; percent -= 0.01) {
			for (j = 0; j < QZ_GAMMA_TABLE_SIZE; j++) {
				redTable[j]   = redTable[j]   * percent;
				greenTable[j] = greenTable[j] * percent;
				blueTable[j]  = blueTable[j]  * percent;
			}

			if (CGSetDisplayTransferByTable(
						display_id, QZ_GAMMA_TABLE_SIZE,
						redTable, greenTable, blueTable
					) != CGDisplayNoErr) {
				CGDisplayRestoreColorSyncSettings();
				return 1;
			}

			CSleep(10);
		}

		return 0;
	}

	/* Fade the display from black to normal
	 * Restore previously saved gamma values
	 */
	uint32 FadeGammaIn(const OTTD_QuartzGammaTable* table)
	{
		CGGammaValue redTable[QZ_GAMMA_TABLE_SIZE];
		CGGammaValue greenTable[QZ_GAMMA_TABLE_SIZE];
		CGGammaValue blueTable[QZ_GAMMA_TABLE_SIZE];
		float percent;
		int j;

		memset(redTable, 0, sizeof(redTable));
		memset(greenTable, 0, sizeof(greenTable));
		memset(blueTable, 0, sizeof(greenTable));

		for (percent = 0.0; percent <= 1.0; percent += 0.01) {
			for (j = 0; j < QZ_GAMMA_TABLE_SIZE; j++) {
				redTable[j]   = table->red[j]   * percent;
				greenTable[j] = table->green[j] * percent;
				blueTable[j]  = table->blue[j]  * percent;
			}

			if (CGSetDisplayTransferByTable(
						display_id, QZ_GAMMA_TABLE_SIZE,
						redTable, greenTable, blueTable
					) != CGDisplayNoErr) {
				CGDisplayRestoreColorSyncSettings();
				return 1;
			}

			CSleep(10);
		}

		return 0;
	}

	/* Wait for the VBL to occur (estimated since we don't have a hardware interrupt) */
	void WaitForVerticalBlank()
	{
		/* The VBL delay is based on Ian Ollmann's RezLib <iano@cco.caltech.edu> */
		double refreshRate;
		double linesPerSecond;
		double target;
		double position;
		double adjustment;
		CFNumberRef refreshRateCFNumber;

		refreshRateCFNumber = (const __CFNumber*)CFDictionaryGetValue(cur_mode, kCGDisplayRefreshRate);
		if (refreshRateCFNumber == NULL) return;

		if (CFNumberGetValue(refreshRateCFNumber, kCFNumberDoubleType, &refreshRate) == 0)
			return;

		if (refreshRate == 0) return;

		linesPerSecond = refreshRate * display_height;
		target = display_height;

		/* Figure out the first delay so we start off about right */
		position = CGDisplayBeamPosition(display_id);
		if (position > target) position = 0;

		adjustment = (target - position) / linesPerSecond;

		CSleep((uint32)(adjustment * 1000));
	}


	bool SetVideoMode(int w, int h)
	{
		int exact_match;
		CFNumberRef number;
		int bpp;
		int gamma_error;
		OTTD_QuartzGammaTable gamma_table;
		NSRect screen_rect;
		CGError error;
		NSPoint pt;

		/* Destroy any previous mode */
		if (pixel_buffer != NULL) {
			free(pixel_buffer);
			pixel_buffer = NULL;
		}

		/* See if requested mode exists */
		cur_mode = CGDisplayBestModeForParameters(display_id, display_depth, w, h, &exact_match);

		/* If the mode wasn't an exact match, check if it has the right bpp, and update width and height */
		if (!exact_match) {
			number = (const __CFNumber*) CFDictionaryGetValue(cur_mode, kCGDisplayBitsPerPixel);
			CFNumberGetValue(number, kCFNumberSInt32Type, &bpp);
			if (bpp != display_depth) {
				DEBUG(driver, 0, "Failed to find display resolution");
				goto ERR_NO_MATCH;
			}

			number = (const __CFNumber*)CFDictionaryGetValue(cur_mode, kCGDisplayWidth);
			CFNumberGetValue(number, kCFNumberSInt32Type, &w);

			number = (const __CFNumber*)CFDictionaryGetValue(cur_mode, kCGDisplayHeight);
			CFNumberGetValue(number, kCFNumberSInt32Type, &h);
		}

		/* Fade display to zero gamma */
		gamma_error = FadeGammaOut(&gamma_table);

		/* Put up the blanking window (a window above all other windows) */
		error = CGDisplayCapture(display_id);

		if (CGDisplayNoErr != error) {
			DEBUG(driver, 0, "Failed capturing display");
			goto ERR_NO_CAPTURE;
		}

		/* Do the physical switch */
		if (CGDisplaySwitchToMode(display_id, cur_mode) != CGDisplayNoErr) {
			DEBUG(driver, 0, "Failed switching display resolution");
			goto ERR_NO_SWITCH;
		}

		screen_buffer = CGDisplayBaseAddress(display_id);
		screen_pitch  = CGDisplayBytesPerRow(display_id);

		display_width = CGDisplayPixelsWide(display_id);
		display_height = CGDisplayPixelsHigh(display_id);

		/* Setup double-buffer emulation */
		pixel_buffer = malloc(display_width * display_height * display_depth / 8);
		if (pixel_buffer == NULL) {
			DEBUG(driver, 0, "Failed to allocate memory for double buffering");
			goto ERR_DOUBLEBUF;
		}

		if (display_depth == 8 && !CGDisplayCanSetPalette(display_id)) {
			DEBUG(driver, 0, "Not an indexed display mode.");
			goto ERR_NOT_INDEXED;
		}

		/* If we don't hide menu bar, it will get events and interrupt the program */
		HideMenuBar();

		/* Fade the display to original gamma */
		if (!gamma_error) FadeGammaIn(&gamma_table);

		/* There is a bug in Cocoa where NSScreen doesn't synchronize
		 * with CGDirectDisplay, so the main screen's frame is wrong.
		 * As a result, coordinate translation produces incorrect results.
		 * We can hack around this bug by setting the screen rect ourselves.
		 * This hack should be removed if/when the bug is fixed.
		*/
		screen_rect = NSMakeRect(0, 0, display_width, display_height);
		[ [ NSScreen mainScreen ] setFrame:screen_rect ];


		pt = [ NSEvent mouseLocation ];
		pt.y = display_height - pt.y;
		if (MouseIsInsideView(&pt)) QZ_HideMouse();

		UpdatePalette(0, 256);

		return true;

		/* Since the blanking window covers *all* windows (even force quit) correct recovery is crucial */
ERR_NOT_INDEXED:
		free(pixel_buffer);
		pixel_buffer = NULL;
ERR_DOUBLEBUF:
		CGDisplaySwitchToMode(display_id, save_mode);
ERR_NO_SWITCH:
		CGReleaseAllDisplays();
ERR_NO_CAPTURE:
		if (!gamma_error) FadeGammaIn(&gamma_table);
ERR_NO_MATCH:
		display_width = 0;
		display_height = 0;

		return false;
	}

	void RestoreVideoMode()
	{
		/* Release fullscreen resources */
		OTTD_QuartzGammaTable gamma_table;
		int gamma_error;
		NSRect screen_rect;

		gamma_error = FadeGammaOut(&gamma_table);

		/* Restore original screen resolution/bpp */
		CGDisplaySwitchToMode(display_id, save_mode);
		CGReleaseAllDisplays();
		ShowMenuBar();
		/* Reset the main screen's rectangle
		 * See comment in SetVideoMode for why we do this
		 */
		screen_rect = NSMakeRect(0, 0, CGDisplayPixelsWide(display_id), CGDisplayPixelsHigh(display_id));
		[ [ NSScreen mainScreen ] setFrame:screen_rect ];

		QZ_ShowMouse();

		/* Destroy the pixel buffer */
		if (pixel_buffer != NULL) {
			free(pixel_buffer);
			pixel_buffer = NULL;
		}

		if (!gamma_error) FadeGammaIn(&gamma_table);

		display_width = 0;
		display_height = 0;
	}

public:
	FullscreenSubdriver(int bpp)
	{
		if (bpp != 8 && bpp != 32) {
			error("Cocoa: This video driver only supports 8 and 32 bpp blitters.");
		}

		/* Initialize the video settings; this data persists between mode switches */
		display_id = kCGDirectMainDisplay;
		save_mode  = CGDisplayCurrentMode(display_id);

		if (bpp == 8) palette = CGPaletteCreateDefaultColorPalette();

		display_width  = 0;
		display_height = 0;
		display_depth  = bpp;
		pixel_buffer   = NULL;

		num_dirty_rects = MAX_DIRTY_RECTS;
	}

	virtual ~FullscreenSubdriver()
	{
		RestoreVideoMode();
	}

	virtual void Draw()
	{
		const uint8* src   = (uint8*) pixel_buffer;
		uint8* dst         = (uint8*) screen_buffer;
		uint pitch         = screen_pitch;
		uint width         = display_width;
		uint num_dirty     = num_dirty_rects;
		uint bytesperpixel = display_depth / 8;
		uint i;

		/* Check if we need to do anything */
		if (num_dirty == 0) return;

		if (num_dirty >= MAX_DIRTY_RECTS) {
			num_dirty = 1;
			dirty_rects[0].left   = 0;
			dirty_rects[0].top    = 0;
			dirty_rects[0].right  = display_width;
			dirty_rects[0].bottom = display_height;
		}

		WaitForVerticalBlank();
		/* Build the region of dirty rectangles */
		for (i = 0; i < num_dirty; i++) {
			uint y      = dirty_rects[i].top;
			uint left   = dirty_rects[i].left;
			uint length = dirty_rects[i].right - left;
			uint bottom = dirty_rects[i].bottom;

			for (; y < bottom; y++) {
				memcpy(dst + y * pitch + left * bytesperpixel, src + y * width * bytesperpixel + left * bytesperpixel, length * bytesperpixel);
			}
		}

		num_dirty_rects = 0;
	}

	virtual void MakeDirty(int left, int top, int width, int height)
	{
		if (num_dirty_rects < MAX_DIRTY_RECTS) {
			dirty_rects[num_dirty_rects].left = left;
			dirty_rects[num_dirty_rects].top = top;
			dirty_rects[num_dirty_rects].right = left + width;
			dirty_rects[num_dirty_rects].bottom = top + height;
		}
		num_dirty_rects++;
	}

	virtual void UpdatePalette(uint first_color, uint num_colors)
	{
		CGTableCount  index;
		CGDeviceColor color;

		if (display_depth != 8)
			return;

		for (index = first_color; index < first_color+num_colors; index++) {
			/* Clamp colors between 0.0 and 1.0 */
			color.red   = _cur_palette[index].r / 255.0;
			color.blue  = _cur_palette[index].b / 255.0;
			color.green = _cur_palette[index].g / 255.0;

			CGPaletteSetColorAtIndex(palette, color, index);
		}

		CGDisplaySetPalette(display_id, palette);
	}

	virtual uint ListModes(OTTD_Point* modes, uint max_modes)
	{
		return QZ_ListModes(modes, max_modes, display_id, display_depth);
	}

	virtual bool ChangeResolution(int w, int h)
	{
		int old_width  = display_width;
		int old_height = display_height;

		if (SetVideoMode(w, h))
			return true;

		if (old_width != 0 && old_height != 0)
			SetVideoMode(old_width, old_height);

		return false;
	}

	virtual bool IsFullscreen()
	{
		return true;
	}

	virtual int GetWidth()
	{
		return display_width;
	}

	virtual int GetHeight()
	{
		return display_height;
	}

	virtual void *GetPixelBuffer()
	{
		return pixel_buffer;
	}

	/*
		Convert local coordinate to window server (CoreGraphics) coordinate.
		In fullscreen mode this just means copying the coords.
	*/
	virtual CGPoint PrivateLocalToCG(NSPoint* p)
	{
		CGPoint cgp;

		cgp.x = p->x;
		cgp.y = p->y;

		return cgp;
	}

	virtual NSPoint GetMouseLocation(NSEvent *event)
	{
		NSPoint pt;

		pt = [ NSEvent mouseLocation ];
		pt.y = display_height - pt.y;

		return pt;
	}

	virtual bool MouseIsInsideView(NSPoint *pt)
	{
		return pt->x >= 0 && pt->y >= 0 && pt->x < display_width && pt->y < display_height;
	}

	virtual bool IsActive()
	{
		return true;
	}
};

CocoaSubdriver *QZ_CreateFullscreenSubdriver(int width, int height, int bpp)
{
	FullscreenSubdriver *ret;

	ret = new FullscreenSubdriver(bpp);

	if (!ret->ChangeResolution(width, height)) {
		delete ret;
		return NULL;
	}

	return ret;
}

#endif /* WITH_COCOA */