aboutsummaryrefslogtreecommitdiff
path: root/engines/saga/music.cpp
blob: 6b233e0256be865a7526b56b22bacc8da51aea99 (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
/* 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.
 *
 * $URL$
 * $Id$
 *
 */

// MIDI and digital music class

#include "saga/saga.h"

#include "saga/rscfile.h"
#include "saga/sagaresnames.h"
#include "saga/music.h"
#include "saga/stream.h"
#include "sound/audiostream.h"
#include "sound/mididrv.h"
#include "sound/midiparser.h"
#include "common/config-manager.h"
#include "common/file.h"

namespace Saga {

#define BUFFER_SIZE 4096

class DigitalMusicInputStream : public Audio::AudioStream {
private:
	Audio::AudioStream *_compressedStream;
	ResourceContext *_context;
	ResourceData * resourceData;
	GameSoundTypes soundType;
	Common::File *_file;
	uint32 _filePos;
	uint32 _startPos;
	uint32 _endPos;
	bool _finished;
	bool _looping;
	int16 _buf[BUFFER_SIZE];
	const int16 *_bufferEnd;
	const int16 *_pos;
	const GameSoundInfo *_musicInfo;
	Common::MemoryReadStream *_memoryStream;

	void refill();
	bool eosIntern() const {
		return _pos >= _bufferEnd;
	}

public:
	DigitalMusicInputStream(SagaEngine *vm, ResourceContext *context, uint32 resourceId, bool looping, uint32 loopStart);
	~DigitalMusicInputStream();

	void createCompressedStream();

	int readBuffer(int16 *buffer, const int numSamples);

	bool endOfData() const	{ return eosIntern(); }
	bool isStereo() const	{ return _musicInfo->stereo; }
	int getRate() const	{ return _musicInfo->frequency; }
};

DigitalMusicInputStream::DigitalMusicInputStream(SagaEngine *vm, ResourceContext *context, uint32 resourceId, bool looping, uint32 loopStart)
	: _context(context), _finished(false), _looping(looping), _bufferEnd(_buf + BUFFER_SIZE) {

	byte compressedHeader[10];

	resourceData = vm->_resource->getResourceData(context, resourceId);
	_file = context->getFile(resourceData);
	_musicInfo = vm->getMusicInfo();

	if (_musicInfo == NULL) {
		error("DigitalMusicInputStream() wrong musicInfo");
	}

	_compressedStream = NULL;

	if (Common::File::exists("music.cmp") || Common::File::exists("musicd.cmp")) {
		// Read compressed header to determine compression type
		_file->seek((long)resourceData->offset, SEEK_SET);
		_file->read(compressedHeader, 9);

		if (compressedHeader[0] == char(0)) {
			soundType = kSoundMP3;
		} else if (compressedHeader[0] == char(1)) {
			soundType = kSoundOGG;
		} else if (compressedHeader[0] == char(2)) {
			soundType = kSoundFLAC;
		}

		createCompressedStream();
		resourceData->offset += 9;	// Skip compressed header
	}

	// Determine the end position
	_filePos = resourceData->offset;
	_endPos = _filePos + resourceData->size;
	_startPos = _filePos + loopStart;
	if (_startPos >= _endPos)
		_startPos = _filePos;

	// Read in initial data
	refill();
}

DigitalMusicInputStream::~DigitalMusicInputStream() {
	delete _compressedStream;
}

void DigitalMusicInputStream::createCompressedStream() {
	uint numLoops = _looping ? 0 : 1;
	_memoryStream = _file->readStream(resourceData->size);

	switch (soundType) {
#ifdef USE_MAD
		case kSoundMP3:
			debug(1, "Playing MP3 compressed digital music");
			_compressedStream = Audio::makeMP3Stream(_memoryStream, true, 0, 0, numLoops);
			break;
#endif
#ifdef USE_VORBIS
		case kSoundOGG:
			debug(1, "Playing OGG compressed digital music");
			_compressedStream = Audio::makeVorbisStream(_memoryStream, true, 0, 0, numLoops);
			break;
#endif
#ifdef USE_FLAC
		case kSoundFLAC:
			debug(1, "Playing FLAC compressed digital music");
			_compressedStream = Audio::makeFlacStream(_memoryStream, true, 0, 0, numLoops);
			break;
#endif
		default:
			// Unknown compression
			error("Trying to play a compressed digital music, but the compression is not known");
			break;
	}
}

int DigitalMusicInputStream::readBuffer(int16 *buffer, const int numSamples) {
	if (_compressedStream != NULL)
		return _compressedStream->readBuffer(buffer, numSamples);

	int samples = 0;
	while (samples < numSamples && !eosIntern()) {
		int len = 0;
		len = MIN(numSamples - samples, (int) (_bufferEnd - _pos));
		memcpy(buffer, _pos, len * 2);
		buffer += len;
		_pos += len;
		samples += len;
		if (_pos >= _bufferEnd)
			refill();
	}
	return samples;
}

void DigitalMusicInputStream::refill() {
	if (_finished)
		return;

	uint32 lengthLeft;
	byte *ptr = (byte *) _buf;


	_file->seek(_filePos, SEEK_SET);

	if (_looping)
		lengthLeft = 2 * BUFFER_SIZE;
	else
		lengthLeft = MIN((uint32) (2 * BUFFER_SIZE), _endPos - _filePos);

	while (lengthLeft > 0) {
		uint32 len = _file->read(ptr, MIN(lengthLeft, _endPos - _file->pos()));

		if (len & 1)
			len--;

#ifdef SCUMM_BIG_ENDIAN
		if (!_context->isBigEndian) {
#else
		if (_context->isBigEndian) {
#endif
			uint16 *ptr16 = (uint16 *)ptr;
			for (uint32 i = 0; i < (len / 2); i++)
				ptr16[i] = SWAP_BYTES_16(ptr16[i]);
		}

		lengthLeft -= len;
		ptr += len;

		if (lengthLeft > 0)
			_file->seek(_startPos);
	}

	_filePos = _file->pos();
	_pos = _buf;
	_bufferEnd = (int16 *)ptr;

	if (!_looping && _filePos >= _endPos) {
		_finished = true;
	}
}


MusicPlayer::MusicPlayer(MidiDriver *driver) : _parser(0), _driver(driver), _looping(false), _isPlaying(false), _passThrough(false), _isGM(false) {
	memset(_channel, 0, sizeof(_channel));
	_masterVolume = 0;
	this->open();
}

MusicPlayer::~MusicPlayer() {
	_driver->setTimerCallback(NULL, NULL);
	stopMusic();
	this->close();
}

void MusicPlayer::setVolume(int volume) {
	if (volume < 0)
		volume = 0;
	else if (volume > 255)
		volume = 255;

	if (_masterVolume == volume)
		return;

	_masterVolume = volume;

	for (int i = 0; i < 16; ++i) {
		if (_channel[i]) {
			_channel[i]->volume(_channelVolume[i] * _masterVolume / 255);
		}
	}
}

int MusicPlayer::open() {
	// Don't ever call open without first setting the output driver!
	if (!_driver)
		return 255;

	int ret = _driver->open();
	if (ret)
		return ret;

	_driver->setTimerCallback(this, &onTimer);
	return 0;
}

void MusicPlayer::close() {
	stopMusic();
	if (_driver)
		_driver->close();
	_driver = 0;
}

void MusicPlayer::send(uint32 b) {
	if (_passThrough) {
		_driver->send(b);
		return;
	}

	byte channel = (byte)(b & 0x0F);
	if ((b & 0xFFF0) == 0x07B0) {
		// Adjust volume changes by master volume
		byte volume = (byte)((b >> 16) & 0x7F);
		_channelVolume[channel] = volume;
		volume = volume * _masterVolume / 255;
		b = (b & 0xFF00FFFF) | (volume << 16);
	} else if ((b & 0xF0) == 0xC0 && !_isGM && !_nativeMT32) {
		b = (b & 0xFFFF00FF) | MidiDriver::_mt32ToGm[(b >> 8) & 0xFF] << 8;
	}
	else if ((b & 0xFFF0) == 0x007BB0) {
		//Only respond to All Notes Off if this channel
		//has currently been allocated
		if (_channel[b & 0x0F])
			return;
	}

	if (!_channel[channel])
		_channel[channel] = (channel == 9) ? _driver->getPercussionChannel() : _driver->allocateChannel();

	if (_channel[channel])
		_channel[channel]->send(b);
}

void MusicPlayer::metaEvent(byte type, byte *data, uint16 length) {
	// FIXME: The "elkfanfare" is played much too quickly. There are some
	//        meta events that we don't handle. Perhaps there is a
	//        connection...?

	switch (type) {
	case 0x2F:	// End of Track
		if (_looping)
			_parser->jumpToTick(0);
		else
			stopMusic();
		break;
	default:
		//warning("Unhandled meta event: %02x", type);
		break;
	}
}

void MusicPlayer::onTimer(void *refCon) {
	MusicPlayer *music = (MusicPlayer *)refCon;
	Common::StackLock lock(music->_mutex);

	if (music->_isPlaying)
		music->_parser->onTimer();
}

void MusicPlayer::playMusic() {
	_isPlaying = true;
}

void MusicPlayer::stopMusic() {
	Common::StackLock lock(_mutex);

	_isPlaying = false;
	if (_parser) {
		_parser->unloadMusic();
		_parser = NULL;
	}
}

Music::Music(SagaEngine *vm, Audio::Mixer *mixer, MidiDriver *driver, int enabled) : _vm(vm), _mixer(mixer), _enabled(enabled), _adlib(false) {
	_player = new MusicPlayer(driver);
	_currentVolume = 0;

	xmidiParser = MidiParser::createParser_XMIDI();
	smfParser = MidiParser::createParser_SMF();	

	_digitalMusicContext = _vm->_resource->getContext(GAME_MUSICFILE);

	_songTableLen = 0;
	_songTable = 0;

	_midiMusicData = NULL;
}

Music::~Music() {
	_vm->_timer->removeTimerProc(&musicVolumeGaugeCallback);
	_mixer->stopHandle(_musicHandle);
	delete _player;
	xmidiParser->setMidiDriver(NULL);
	smfParser->setMidiDriver(NULL);
	delete xmidiParser;
	delete smfParser;

	free(_songTable);
	free(_midiMusicData);
}

void Music::musicVolumeGaugeCallback(void *refCon) {
	((Music *)refCon)->musicVolumeGauge();
}

void Music::musicVolumeGauge() {
	int volume;

	_currentVolumePercent += 10;

	if (_currentVolume - _targetVolume > 0) { // Volume decrease
		volume = _targetVolume + (_currentVolume - _targetVolume) * (100 - _currentVolumePercent) / 100;
	} else {
		volume = _currentVolume + (_targetVolume - _currentVolume) * _currentVolumePercent / 100;
	}

	if (volume < 0)
		volume = 1;

	_mixer->setVolumeForSoundType(Audio::Mixer::kMusicSoundType, volume);
	_player->setVolume(volume);

	if (_currentVolumePercent == 100) {
		_vm->_timer->removeTimerProc(&musicVolumeGaugeCallback);
		_currentVolume = _targetVolume;
	}
}

void Music::setVolume(int volume, int time) {
	_targetVolume = volume * 2; // ScummVM has different volume scale
	_currentVolumePercent = 0;

	if (volume == -1) // Set Full volume
		volume = 255;

	if (time == 1) {
		_mixer->setVolumeForSoundType(Audio::Mixer::kMusicSoundType, volume);
		_player->setVolume(volume);
		_vm->_timer->removeTimerProc(&musicVolumeGaugeCallback);
		_currentVolume = volume;
		return;
	}

	_vm->_timer->installTimerProc(&musicVolumeGaugeCallback, time * 100L, this);
}

bool Music::isPlaying() {
	return _mixer->isSoundHandleActive(_musicHandle) || _player->isPlaying();
}

void Music::play(uint32 resourceId, MusicFlags flags) {
	Audio::AudioStream *audioStream = NULL;
	MidiParser *parser;
	ResourceContext *context = NULL;
	byte *resourceData;
	size_t resourceSize;	
	uint32 loopStart;

	debug(2, "Music::play %d, %d", resourceId, flags);

	if (!_enabled) {
		return;
	}

	if (isPlaying() && _trackNumber == resourceId) {
		return;
	}

	_trackNumber = resourceId;
	_player->stopMusic();
	_mixer->stopHandle(_musicHandle);

	if (!_vm->_musicVolume) {
		return;
	}

	int realTrackNumber;

	if (_vm->getGameType() == GType_ITE) {
		if (flags == MUSIC_DEFAULT) {
			if (resourceId == 13 || resourceId == 19) {
				flags = MUSIC_NORMAL;
			} else {
				flags = MUSIC_LOOP;
			}
		}
		realTrackNumber = resourceId - 8;
	} else {
		realTrackNumber = resourceId + 1;
	}

	// Try to open standalone digital track
	char trackName[2][16];
	sprintf(trackName[0], "track%d", realTrackNumber);
	sprintf(trackName[1], "track%02d", realTrackNumber);
	Audio::AudioStream *stream = 0;
	for (int i = 0; i < 2; ++i) {
		// We multiply by 40 / 3 = 1000 / 75 to convert frames to milliseconds
		// FIXME: Do we really want a duration of 10000 frames = 133 seconds, or is that just a random value?
		stream = Audio::AudioStream::openStreamFile(trackName[i], 0, 10000 * 40 / 3, (flags == MUSIC_LOOP) ? 0 : 1);
		if (stream) {
			_mixer->playInputStream(Audio::Mixer::kMusicSoundType, &_musicHandle, stream);
			return;
		}
	}

	if (_vm->getGameType() == GType_ITE) {
		if (resourceId >= 9 && resourceId <= 34) {
			if (_digitalMusicContext != NULL) {
				//TODO: check resource size
				loopStart = 0;
				// fix ITE sunstatm score
				if ((_vm->getGameType() == GType_ITE) && (resourceId == MUSIC_SUNSPOT)) {
					loopStart = 4 * 18727;
				}

				// digital music
				audioStream = new DigitalMusicInputStream(_vm, _digitalMusicContext, resourceId - 9, flags == MUSIC_LOOP, loopStart);
			}
		}
	}

	if (audioStream) {
		debug(2, "Playing digitized music");
		_mixer->playInputStream(Audio::Mixer::kMusicSoundType, &_musicHandle, audioStream);
		return;
	}

	if (flags == MUSIC_DEFAULT) {
		flags = MUSIC_NORMAL;
	}

	// Load MIDI/XMI resource data

	if (_vm->getGameType() == GType_ITE) {
		context = _vm->_resource->getContext(GAME_MUSICFILE_GM);
		if (context == NULL) {
			context = _vm->_resource->getContext(GAME_RESOURCEFILE);
		}		
	} else {
		// I've listened to music from both the FM and the GM
		// file, and I've tentatively reached the conclusion
		// that they are both General MIDI. My guess is that
		// the FM file has been reorchestrated to sound better
		// on Adlib and other FM synths.
		//
		// Sev says the Adlib music does not sound like in the
		// original, but I still think assuming General MIDI is
		// the right thing to do. Some music, like the End
		// Title (song 0) sound absolutely atrocious when piped
		// through our MT-32 to GM mapping.
		//
		// It is, however, quite possible that the original
		// used a different GM to FM mapping. If the original
		// sounded markedly better, perhaps we should add some
		// way of replacing our stock mapping in adlib.cpp?
		//
		// For the composer's own recording of the End Title,
		// see http://www.johnottman.com/

		// Oddly enough, the intro music (song 1) is very
		// different in the two files. I have no idea why.
		// Note that the IHNM demo has only got one music file
		// (music.rsc). It is assumed that it contains FM music

		if (hasAdlib() || _vm->getGameId() == GID_IHNM_DEMO) {
			context = _vm->_resource->getContext(GAME_MUSICFILE_FM);
		} else {
			context = _vm->_resource->getContext(GAME_MUSICFILE_GM);
		}
	}

	_player->setGM(true);

	_vm->_resource->loadResource(context, resourceId, resourceData, resourceSize);

	if (resourceSize < 4) {
		error("Music::play() wrong music resource size");
	}

	if (xmidiParser->loadMusic(resourceData, resourceSize)) {
		if (_vm->getGameType() == GType_ITE)
			_player->setGM(false);

		parser = xmidiParser;
	} else {
		if (smfParser->loadMusic(resourceData, resourceSize)) {
			parser = smfParser;
		} else {
			error("Music::play() wrong music resource");
		}
	}

	parser->setTrack(0);
	parser->setMidiDriver(_player);
	parser->setTimerRate(_player->getBaseTempo());
	parser->property(MidiParser::mpCenterPitchWheelOnUnload, 1);

	_player->_parser = parser;
	setVolume(_vm->_musicVolume == 10 ? 255 : _vm->_musicVolume * 25);

	if (flags & MUSIC_LOOP)
		_player->setLoop(true);
	else
		_player->setLoop(false);

	_player->playMusic();
	free(_midiMusicData);
	_midiMusicData = resourceData;
}

void Music::pause(void) {
	_player->setVolume(-1);
	_player->setPlaying(false);
}

void Music::resume(void) {
	_player->setVolume(_vm->_musicVolume == 10 ? 255 : _vm->_musicVolume * 25);
	_player->setPlaying(true);
}

void Music::stop(void) {
	_player->stopMusic();
}

} // End of namespace Saga