aboutsummaryrefslogtreecommitdiff
path: root/graphics/mpeg_player.cpp
blob: 3c0fd08cb3ae07639c57370575ab54bc703d143c (plain)
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
619
620
621
622
623
624
625
626
627
628
/* ScummVM - Graphic Adventure Engine
 *
 * ScummVM is the legal property of its developers, whose names
 * are too numerous to list here. Please refer to the COPYRIGHT
 * file distributed with this source distribution.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.

 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.

 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 * $URL$
 * $Id$
 *
 */

#include "graphics/mpeg_player.h"
#include "common/file.h"
#include "common/system.h"
#include "common/util.h"
#include "graphics/scaler/intern.h"

namespace Graphics {

BaseAnimationState::BaseAnimationState(OSystem *sys, int width, int height)
	: _movieWidth(width), _movieHeight(height), _frameWidth(width), _frameHeight(height), _sys(sys) {
#ifndef BACKEND_8BIT
	const int screenW = _sys->getOverlayWidth();
	const int screenH = _sys->getOverlayHeight();

	_movieScale = MIN(screenW / _movieWidth, screenH / _movieHeight);

	assert(_movieScale >= 1);
	if (_movieScale > 3)
		_movieScale = 3;

	_colorTab = NULL;
	_rgbToPix = NULL;
	_bitFormat = 0;
#endif
}

BaseAnimationState::~BaseAnimationState() {
#ifdef USE_MPEG2
	if (_mpegDecoder)
		mpeg2_close(_mpegDecoder);
	delete _mpegFile;
#ifndef BACKEND_8BIT
	_sys->hideOverlay();
	free(_overlay);
	free(_colorTab);
	free(_rgbToPix);
#endif
#endif
}


bool BaseAnimationState::init(const char *name) {
#ifdef USE_MPEG2
	char tempFile[512];

	_mpegDecoder = NULL;
	_mpegFile = NULL;

#ifdef BACKEND_8BIT

	uint i, p;

	// Load lookup palettes
	sprintf(tempFile, "%s.pal", name);

	Common::File f;

	if (!f.open(tempFile)) {
		warning("Cutscene: %s palette missing", tempFile);
		return false;
	}

	p = 0;
	while (1) {
		_palettes[p].end = f.readUint16LE();
		_palettes[p].cnt = f.readUint16LE();

		if (f.ioFailed())
			break;

		for (i = 0; i < _palettes[p].cnt; i++) {
			_palettes[p].pal[4 * i] = f.readByte();
			_palettes[p].pal[4 * i + 1] = f.readByte();
			_palettes[p].pal[4 * i + 2] = f.readByte();
			_palettes[p].pal[4 * i + 3] = 0;
		}
		for (; i < 256; i++) {
			_palettes[p].pal[4 * i] = 0;
			_palettes[p].pal[4 * i + 1] = 0;
			_palettes[p].pal[4 * i + 2] = 0;
			_palettes[p].pal[4 * i + 3] = 0;
		}

		p++;
	}

	f.close();

	_palNum = 0;
	_maxPalNum = p;
	setPalette(_palettes[_palNum].pal);
	_lut = _lut2 = _yuvLookup[0];
	_curPal = -1;
	_cr = 0;
	buildLookup(_palNum, 256);
	_lut2 = _yuvLookup[1];
	_lutCalcNum = (BITDEPTH + _palettes[_palNum].end + 2) / (_palettes[_palNum].end + 2);
#else
	buildLookup();
	_overlay = (OverlayColor *)calloc(_movieScale * _movieWidth * _movieScale * _movieHeight, sizeof(OverlayColor));
	_sys->showOverlay();
#endif

	// Open MPEG2 stream
	_mpegFile = new Common::File();
	sprintf(tempFile, "%s.mp2", name);
	if (!_mpegFile->open(tempFile)) {
		warning("Cutscene: Could not open %s", tempFile);
		return false;
	}

	// Load and configure decoder
	_mpegDecoder = mpeg2_init();
	if (_mpegDecoder == NULL) {
		warning("Cutscene: Could not allocate an MPEG2 decoder");
		return false;
	}

	_mpegInfo = mpeg2_info(_mpegDecoder);
	_frameNum = 0;

	return true;
#else /* USE_MPEG2 */
	return false;
#endif
}

bool BaseAnimationState::decodeFrame() {
#ifdef USE_MPEG2
	mpeg2_state_t state;
	const mpeg2_sequence_t *sequence_i;
	size_t size = (size_t) -1;
	static byte buf[BUFFER_SIZE];

	do {
		state = mpeg2_parse(_mpegDecoder);
		sequence_i = _mpegInfo->sequence;

		switch (state) {
		case STATE_BUFFER:
			size = _mpegFile->read(buf, BUFFER_SIZE);
			mpeg2_buffer(_mpegDecoder, buf, buf + size);
			break;

		case STATE_SLICE:
		case STATE_END:
			if (_mpegInfo->display_fbuf) {
				checkPaletteSwitch();
				drawYUV(sequence_i->width, sequence_i->height, _mpegInfo->display_fbuf->buf);
#ifdef BACKEND_8BIT
				buildLookup(_palNum + 1, _lutCalcNum);
#endif

				_frameNum++;
				return true;
			}
			break;

		default:
			break;
		}
	} while (size);
#endif
	return false;
}

bool BaseAnimationState::checkPaletteSwitch() {
#ifdef BACKEND_8BIT
	// if we have reached the last image with this palette, switch to new one
	if (_frameNum == _palettes[_palNum].end) {
		unsigned char *l = _lut2;
		_palNum++;
		setPalette(_palettes[_palNum].pal);
		_lutCalcNum = (BITDEPTH + _palettes[_palNum].end - (_frameNum + 1) + 2) / (_palettes[_palNum].end - (_frameNum + 1) + 2);
		_lut2 = _lut;
		_lut = l;
		return true;
	}
#endif

	return false;
}

void BaseAnimationState::handleScreenChanged() {
#ifndef BACKEND_8BIT
	const int screenW = _sys->getOverlayWidth();
	const int screenH = _sys->getOverlayHeight();

	int newScale = MIN(screenW / _movieWidth, screenH / _movieHeight);

	assert(newScale >= 1);
	if (newScale > 3)
		newScale = 3;

	if (newScale != _movieScale) {
		// HACK: Since frames generally do not cover the entire screen,
		//       We need to undraw the old frame. This is a very hacky
		//       way of doing that.
		OverlayColor *buf = (OverlayColor *)calloc(screenW * screenH, sizeof(OverlayColor));
		_sys->copyRectToOverlay(buf, screenW, 0, 0, screenW, screenH);
		free(buf);

		free(_overlay);
		_movieScale = newScale;
		_overlay = (OverlayColor *)calloc(_movieScale * _movieWidth * _movieScale * _movieHeight, sizeof(OverlayColor));
	}

	buildLookup();
#endif
}

#ifdef BACKEND_8BIT

/**
 * Build 'Best-Match' RGB lookup table
 */
void BaseAnimationState::buildLookup(int p, int lines) {
	int y, cb;
	int r, g, b, ii;

	if (p >= _maxPalNum)
		return;

	if (p != _curPal) {
		_curPal = p;
		_cr = 0;
		_pos = 0;
	}

	if (_cr > BITDEPTH)
		return;

	for (ii = 0; ii < lines; ii++) {
		r = (-16 * 256 + (int) (256 * 1.596) * ((_cr << SHIFT) - 128)) / 256;
		for (cb = 0; cb <= BITDEPTH; cb++) {
			g = (-16 * 256 - (int) (0.813 * 256) * ((_cr << SHIFT) - 128) - (int) (0.391 * 256) * ((cb << SHIFT) - 128)) / 256;
			b = (-16 * 256 + (int) (2.018 * 256) * ((cb << SHIFT) - 128)) / 256;

			for (y = 0; y <= BITDEPTH; y++) {
				int idx, bst = 0;
				int dis = 2 * SQR(r - _palettes[p].pal[0]) + 4 * SQR(g - _palettes[p].pal[1]) + SQR(b - _palettes[p].pal[2]);

				for (idx = 1; idx < 256; idx++) {
					long d2 = 2 * SQR(r - _palettes[p].pal[4 * idx]) + 4 * SQR(g - _palettes[p].pal[4 * idx + 1]) + SQR(b - _palettes[p].pal[4 * idx + 2]);
					if (d2 < dis) {
						bst = idx;
						dis = d2;
					}
				}
				_lut2[_pos++] = bst;

				r += (1 << SHIFT);
				g += (1 << SHIFT);
				b += (1 << SHIFT);
			}
			r -= (BITDEPTH + 1) * (1 << SHIFT);
		}
		_cr++;
		if (_cr > BITDEPTH)
			return;
	}
}

#else

// The YUV to RGB conversion code is derived from SDL's YUV overlay code, which
// in turn appears to be derived from mpeg_play. The following copyright
// notices have been included in accordance with the original license. Please
// note that the term "software" in this context only applies to the two
// functions buildLookup() and plotYUV() below.

// Copyright (c) 1995 The Regents of the University of California.
// All rights reserved.
//
// Permission to use, copy, modify, and distribute this software and its
// documentation for any purpose, without fee, and without written agreement is
// hereby granted, provided that the above copyright notice and the following
// two paragraphs appear in all copies of this software.
//
// IN NO EVENT SHALL THE UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY FOR
// DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT
// OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF THE UNIVERSITY OF
// CALIFORNIA HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY WARRANTIES,
// INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
// AND FITNESS FOR A PARTICULAR PURPOSE.  THE SOFTWARE PROVIDED HEREUNDER IS
// ON AN "AS IS" BASIS, AND THE UNIVERSITY OF CALIFORNIA HAS NO OBLIGATION TO
// PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.

// Copyright (c) 1995 Erik Corry
// All rights reserved.
//
// Permission to use, copy, modify, and distribute this software and its
// documentation for any purpose, without fee, and without written agreement is
// hereby granted, provided that the above copyright notice and the following
// two paragraphs appear in all copies of this software.
//
// IN NO EVENT SHALL ERIK CORRY BE LIABLE TO ANY PARTY FOR DIRECT, INDIRECT,
// SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OF
// THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF ERIK CORRY HAS BEEN ADVISED
// OF THE POSSIBILITY OF SUCH DAMAGE.
//
// ERIK CORRY SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
// PARTICULAR PURPOSE.  THE SOFTWARE PROVIDED HEREUNDER IS ON AN "AS IS"
// BASIS, AND ERIK CORRY HAS NO OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT,
// UPDATES, ENHANCEMENTS, OR MODIFICATIONS.

// Portions of this software Copyright (c) 1995 Brown University.
// All rights reserved.
//
// Permission to use, copy, modify, and distribute this software and its
// documentation for any purpose, without fee, and without written agreement
// is hereby granted, provided that the above copyright notice and the
// following two paragraphs appear in all copies of this software.
//
// IN NO EVENT SHALL BROWN UNIVERSITY BE LIABLE TO ANY PARTY FOR
// DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT
// OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF BROWN
// UNIVERSITY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// BROWN UNIVERSITY SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
// PARTICULAR PURPOSE.  THE SOFTWARE PROVIDED HEREUNDER IS ON AN "AS IS"
// BASIS, AND BROWN UNIVERSITY HAS NO OBLIGATION TO PROVIDE MAINTENANCE,
// SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.

void BaseAnimationState::buildLookup() {
	// Do we already have lookup tables for this bit format?
	if (gBitFormat == _bitFormat && _colorTab && _rgbToPix)
		return;

	free(_colorTab);
	free(_rgbToPix);

	_colorTab = (int16 *)malloc(4 * 256 * sizeof(int16));

	int16 *Cr_r_tab = &_colorTab[0 * 256];
	int16 *Cr_g_tab = &_colorTab[1 * 256];
	int16 *Cb_g_tab = &_colorTab[2 * 256];
	int16 *Cb_b_tab = &_colorTab[3 * 256];

	_rgbToPix = (OverlayColor *)malloc(3 * 768 * sizeof(OverlayColor));

	OverlayColor *r_2_pix_alloc = &_rgbToPix[0 * 768];
	OverlayColor *g_2_pix_alloc = &_rgbToPix[1 * 768];
	OverlayColor *b_2_pix_alloc = &_rgbToPix[2 * 768];

	int16 CR, CB;
	int i;

	// Generate the tables for the display surface

	for (i = 0; i < 256; i++) {
		// Gamma correction (luminescence table) and chroma correction
		// would be done here. See the Berkeley mpeg_play sources.

		CR = CB = (i - 128);
		Cr_r_tab[i] = (int16) ( (0.419 / 0.299) * CR) + 0 * 768 + 256;
		Cr_g_tab[i] = (int16) (-(0.299 / 0.419) * CR) + 1 * 768 + 256;
		Cb_g_tab[i] = (int16) (-(0.114 / 0.331) * CB);
		Cb_b_tab[i] = (int16) ( (0.587 / 0.331) * CB) + 2 * 768 + 256;
	}

	// Set up entries 0-255 in rgb-to-pixel value tables.
	for (i = 0; i < 256; i++) {
		r_2_pix_alloc[i + 256] = _sys->RGBToColor(i, 0, 0);
		g_2_pix_alloc[i + 256] = _sys->RGBToColor(0, i, 0);
		b_2_pix_alloc[i + 256] = _sys->RGBToColor(0, 0, i);
	}

	// Spread out the values we have to the rest of the array so that we do
	// not need to check for overflow.
	for (i = 0; i < 256; i++) {
		r_2_pix_alloc[i] = r_2_pix_alloc[256];
		r_2_pix_alloc[i + 512] = r_2_pix_alloc[511];
		g_2_pix_alloc[i] = g_2_pix_alloc[256];
		g_2_pix_alloc[i + 512] = g_2_pix_alloc[511];
		b_2_pix_alloc[i] = b_2_pix_alloc[256];
		b_2_pix_alloc[i + 512] = b_2_pix_alloc[511];
	}

	_bitFormat = gBitFormat;
}

void BaseAnimationState::plotYUV(int width, int height, byte *const *dat) {
	switch (_movieScale) {
	case 1:
		plotYUV1x(width, height, dat);
		break;
	case 2:
		plotYUV2x(width, height, dat);
		break;
	case 3:
		plotYUV3x(width, height, dat);
		break;
	}
}

void BaseAnimationState::plotYUV1x(int width, int height, byte *const *dat) {
	byte *lum = dat[0];
	byte *cr = dat[2];
	byte *cb = dat[1];

	byte *lum2 = lum + width;

	int16 cr_r;
	int16 crb_g;
	int16 cb_b;

	OverlayColor *row1 = _overlay;
	OverlayColor *row2 = row1 + _movieWidth;

	int x;

	for (; height > 0; height -= 2) {
		OverlayColor *r1 = row1;
		OverlayColor *r2 = row2;

		for (x = width; x > 0; x -= 2) {
			register OverlayColor *L;

			cr_r  = _colorTab[*cr + 0 * 256];
			crb_g = _colorTab[*cr + 1 * 256] + _colorTab[*cb + 2 * 256];
			cb_b  = _colorTab[*cb + 3 * 256];
			++cr;
			++cb;

			L = &_rgbToPix[*lum++];
			*r1++ = L[cr_r] | L[crb_g] | L[cb_b];

			L = &_rgbToPix[*lum++];
			*r1++ = L[cr_r] | L[crb_g] | L[cb_b];

			// Now, do second row.

			L = &_rgbToPix[*lum2++];
			*r2++ = L[cr_r] | L[crb_g] | L[cb_b];

			L = &_rgbToPix[*lum2++];
			*r2++ = L[cr_r] | L[crb_g] | L[cb_b];
		}

		lum  += width;
		lum2 += width;
		row1 += 2 * _movieWidth;
		row2 += 2 * _movieWidth;
	}
}

void BaseAnimationState::plotYUV2x(int width, int height, byte *const *dat) {
	byte *lum = dat[0];
	byte *cr = dat[2];
	byte *cb = dat[1];

	byte *lum2 = lum + width;

	int16 cr_r;
	int16 crb_g;
	int16 cb_b;

	OverlayColor *row1 = _overlay;
	OverlayColor *row2 = row1 + 2 * 2 * _movieWidth;

	int x;

	for (; height > 0; height -= 2) {
		OverlayColor *r1 = row1;
		OverlayColor *r2 = row2;

		for (x = width; x > 0; x -= 2) {
			register OverlayColor *L;
			register OverlayColor  C;

			cr_r  = _colorTab[*cr + 0 * 256];
			crb_g = _colorTab[*cr + 1 * 256] + _colorTab[*cb + 2 * 256];
			cb_b  = _colorTab[*cb + 3 * 256];
			++cr;
			++cb;

			L = &_rgbToPix[*lum++];
			C = L[cr_r] | L[crb_g] | L[cb_b];
			*r1++ = C;
			*r1++ = C;

			L = &_rgbToPix[*lum++];
			C = L[cr_r] | L[crb_g] | L[cb_b];
			*r1++ = C;
			*r1++ = C;

			// Now, do second row.

			L = &_rgbToPix[*lum2++];
			C = L[cr_r] | L[crb_g] | L[cb_b];
			*r2++ = C;
			*r2++ = C;

			L = &_rgbToPix[*lum2++];
			C = L[cr_r] | L[crb_g] | L[cb_b];
			*r2++ = C;
			*r2++ = C;
		}

		memcpy(row1 + 2 * _movieWidth, row1, 2 * _movieWidth * sizeof(OverlayColor));
		memcpy(row2 + 2 * _movieWidth, row2, 2 * _movieWidth * sizeof(OverlayColor));

		lum  += width;
		lum2 += width;
		row1 += 4 * 2 * _movieWidth;
		row2 += 4 * 2 * _movieWidth;
	}
}

void BaseAnimationState::plotYUV3x(int width, int height, byte *const *dat) {
	byte *lum = dat[0];
	byte *cr = dat[2];
	byte *cb = dat[1];

	byte *lum2 = lum + width;

	int16 cr_r;
	int16 crb_g;
	int16 cb_b;

	OverlayColor *row1 = _overlay;
	OverlayColor *row2 = row1 + 3 * 3 * _movieWidth;

	int x;

	for (; height > 0; height -= 2) {
		OverlayColor *r1 = row1;
		OverlayColor *r2 = row2;

		for (x = width; x > 0; x -= 2) {
			register OverlayColor *L;
			register OverlayColor  C;

			cr_r  = _colorTab[*cr + 0 * 256];
			crb_g = _colorTab[*cr + 1 * 256] + _colorTab[*cb + 2 * 256];
			cb_b  = _colorTab[*cb + 3 * 256];
			++cr;
			++cb;

			L = &_rgbToPix[*lum++];
			C = L[cr_r] | L[crb_g] | L[cb_b];
			*r1++ = C;
			*r1++ = C;
			*r1++ = C;

			L = &_rgbToPix[*lum++];
			C = L[cr_r] | L[crb_g] | L[cb_b];
			*r1++ = C;
			*r1++ = C;
			*r1++ = C;

			// Now, do second row.

			L = &_rgbToPix[*lum2++];
			C = L[cr_r] | L[crb_g] | L[cb_b];
			*r2++ = C;
			*r2++ = C;
			*r2++ = C;

			L = &_rgbToPix[*lum2++];
			C = L[cr_r] | L[crb_g] | L[cb_b];
			*r2++ = C;
			*r2++ = C;
			*r2++ = C;
		}

		memcpy(row1 + 3 * _movieWidth, row1, 3 * _movieWidth * sizeof(OverlayColor));
		memcpy(row1 + 2 * 3 * _movieWidth, row1, 3 * _movieWidth * sizeof(OverlayColor));
		memcpy(row2 + 3 * _movieWidth, row2, 3 * _movieWidth * sizeof(OverlayColor));
		memcpy(row2 + 2 * 3 * _movieWidth, row2, 3 * _movieWidth * sizeof(OverlayColor));

		lum  += width;
		lum2 += width;
		row1 += 6 * 3 * _movieWidth;
		row2 += 6 * 3 * _movieWidth;
	}
}

#endif

void BaseAnimationState::updateScreen() {
#ifndef BACKEND_8BIT
	int width = _movieScale * _frameWidth;
	int height = _movieScale * _frameHeight;
	int pitch = _movieScale * _movieWidth;

	const int screenW = _sys->getOverlayWidth();
	const int screenH = _sys->getOverlayHeight();

	int x = (screenW - _movieScale * _frameWidth) / 2;
	int y = (screenH - _movieScale * _frameHeight) / 2;

	_sys->copyRectToOverlay(_overlay, pitch, x, y, width, height);
#endif
	_sys->updateScreen();
}

} // End of namespace Graphics