aboutsummaryrefslogtreecommitdiff
path: root/engines/saga/music.cpp
blob: 13850a0b6d831c863308264375b30bc2041d9ea7 (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
/* 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.
 *
 */

// MIDI and digital music class

#include "saga/saga.h"

#include "saga/resource.h"
#include "saga/music.h"

#include "audio/audiostream.h"
#include "audio/mididrv.h"
#include "audio/midiparser.h"
#include "audio/decoders/raw.h"
#include "common/config-manager.h"
#include "common/file.h"
#include "common/substream.h"

namespace Saga {

#define BUFFER_SIZE 4096
#define MUSIC_SUNSPOT 26

MusicDriver::MusicDriver() : _isGM(false) {

	MidiPlayer::createDriver();

	MidiDriver::DeviceHandle dev = MidiDriver::detectDevice(MDT_MIDI | MDT_ADLIB | MDT_PREFER_GM);
	_driverType = MidiDriver::getMusicType(dev);

	int retValue = _driver->open();
	if (retValue == 0) {
		if (_nativeMT32)
			_driver->sendMT32Reset();
		else
			_driver->sendGMReset();

		_driver->setTimerCallback(this, &timerCallback);
	}
}

void MusicDriver::send(uint32 b) {
	if ((b & 0xF0) == 0xC0 && !_isGM && !_nativeMT32) {
		// Remap MT32 instruments to General Midi
		b = (b & 0xFFFF00FF) | MidiDriver::_mt32ToGm[(b >> 8) & 0xFF] << 8;
	}
	Audio::MidiPlayer::send(b);
}

void MusicDriver::metaEvent(byte type, byte *data, uint16 length) {
	// TODO: Seems SAGA does not want / need to handle end-of-track events?
}

void MusicDriver::play(SagaEngine *vm, ByteArray *buffer, bool loop) {
	if (buffer->size() < 4) {
		error("Music::play() wrong music resource size");
	}

	// Check if the game is using XMIDI or SMF music
	if (vm->getGameId() == GID_IHNM && vm->isMacResources()) {
		// Just set an XMIDI parser for Mac IHNM for now
		_parser = MidiParser::createParser_XMIDI();
	} else {
		if (!memcmp(buffer->getBuffer(), "FORM", 4)) {
			_parser = MidiParser::createParser_XMIDI();
			// ITE had MT32 mapped instruments
			_isGM = (vm->getGameId() != GID_ITE);
		} else {
			_parser = MidiParser::createParser_SMF();
			// ITE with standalone MIDI files is General MIDI
			_isGM = (vm->getGameId() == GID_ITE);
		}
	}

	if (!_parser->loadMusic(buffer->getBuffer(), buffer->size()))
		error("Music::play() wrong music resource");

	_parser->setTrack(0);
	_parser->setMidiDriver(this);
	_parser->setTimerRate(_driver->getBaseTempo());
	_parser->property(MidiParser::mpCenterPitchWheelOnUnload, 1);
	_parser->property(MidiParser::mpSendSustainOffOnNotesOff, 1);

	// Handle music looping
	_parser->property(MidiParser::mpAutoLoop, loop);
//	_isLooping = loop;

	_isPlaying = true;
}

void MusicDriver::pause() {
	_isPlaying = false;
}

void MusicDriver::resume() {
	_isPlaying = true;
}


Music::Music(SagaEngine *vm, Audio::Mixer *mixer) : _vm(vm), _mixer(mixer) {
	_currentVolume = 0;
	_currentMusicBuffer = NULL;
	_player = new MusicDriver();

	_digitalMusicContext = _vm->_resource->getContext(GAME_DIGITALMUSICFILE);
	if (!_player->isAdlib())
		_musicContext = _vm->_resource->getContext(GAME_MUSICFILE_GM);
	else
		_musicContext = _vm->_resource->getContext(GAME_MUSICFILE_FM);

	if (!_musicContext) {
		if (_vm->getGameId() == GID_ITE) {
			_musicContext = _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
			_musicContext = _vm->_resource->getContext(GAME_MUSICFILE_FM);
		}
	}

	_digitalMusic = false;
}

Music::~Music() {
	_vm->getTimerManager()->removeTimerProc(&musicVolumeGaugeCallback);
	_mixer->stopHandle(_musicHandle);
	delete _player;
}

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->getTimerManager()->removeTimerProc(&musicVolumeGaugeCallback);
		_currentVolume = _targetVolume;
	}
}

void Music::setVolume(int volume, int time) {
	_targetVolume = volume;
	_currentVolumePercent = 0;

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

	if (time == 1) {
		if (ConfMan.hasKey("mute") && ConfMan.getBool("mute"))
			volume = 0;

		_mixer->setVolumeForSoundType(Audio::Mixer::kMusicSoundType, volume);
		_player->setVolume(volume);
		_vm->getTimerManager()->removeTimerProc(&musicVolumeGaugeCallback);
		_currentVolume = volume;
		return;
	}

	_vm->getTimerManager()->installTimerProc(&musicVolumeGaugeCallback, time * 3000L, this, "sagaMusicVolume");
}

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

void Music::play(uint32 resourceId, MusicFlags flags) {
	Audio::SeekableAudioStream *audioStream = NULL;
	uint32 loopStart = 0;

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

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

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

	int realTrackNumber;

	if (_vm->getGameId() == GID_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::SeekableAudioStream *stream = 0;
	for (int i = 0; i < 2; ++i) {
		stream = Audio::SeekableAudioStream::openStreamFile(trackName[i]);
		if (stream) {
			_mixer->playStream(Audio::Mixer::kMusicSoundType, &_musicHandle,
			                        Audio::makeLoopingAudioStream(stream, (flags == MUSIC_LOOP) ? 0 : 1));
			_digitalMusic = true;
			return;
		}
	}

	if (_vm->getGameId() == GID_ITE) {
		if (resourceId >= 9 && resourceId <= 34) {
			if (_digitalMusicContext != NULL) {
				loopStart = 0;
				// Fix ITE sunstatm/sunspot score
				if (resourceId == MUSIC_SUNSPOT)
					loopStart = 18727;

				// Digital music
				ResourceData *resData = _digitalMusicContext->getResourceData(resourceId - 9);
				Common::File *musicFile = _digitalMusicContext->getFile(resData);
				int offs = (_digitalMusicContext->isCompressed()) ? 9 : 0;

				Common::SeekableSubReadStream *musicStream = new Common::SeekableSubReadStream(musicFile,
							(uint32)resData->offset + offs, (uint32)resData->offset + resData->size - offs);

				if (!_digitalMusicContext->isCompressed()) {
					byte musicFlags = Audio::FLAG_STEREO |
										Audio::FLAG_16BITS | Audio::FLAG_LITTLE_ENDIAN;

					if (_vm->isBigEndian())
						musicFlags &= ~Audio::FLAG_LITTLE_ENDIAN;

					// The newer ITE Mac demo version contains a music file, but it has mono music.
					// This is the only music file that is about 7MB, whereas all the other ones
					// are much larger. Thus, we use this simple heuristic to determine if we got
					// mono music in the ITE demos or not.
					if (!strcmp(_digitalMusicContext->fileName(), "musicd.rsc") &&
						_digitalMusicContext->fileSize() < 8000000)
						musicFlags &= ~Audio::FLAG_STEREO;

					audioStream = Audio::makeRawStream(musicStream, 11025, musicFlags, DisposeAfterUse::YES);
				} else {
					// Read compressed header to determine compression type
					musicFile->seek((uint32)resData->offset, SEEK_SET);
					byte identifier = musicFile->readByte();

					if (identifier == 0) {		// MP3
#ifdef USE_MAD
						audioStream = Audio::makeMP3Stream(musicStream, DisposeAfterUse::YES);
#endif
					} else if (identifier == 1) {	// OGG
#ifdef USE_VORBIS
						audioStream = Audio::makeVorbisStream(musicStream, DisposeAfterUse::YES);
#endif
					} else if (identifier == 2) {	// FLAC
#ifdef USE_FLAC
						audioStream = Audio::makeFLACStream(musicStream, DisposeAfterUse::YES);
#endif
					}
				}

				if (!audioStream)
					delete musicStream;
			}
		}
	}

	if (audioStream) {
		debug(2, "Playing digitized music");
		if (loopStart) {
			_mixer->playStream(Audio::Mixer::kMusicSoundType, &_musicHandle,
			                        new Audio::SubLoopingAudioStream(audioStream,
			                        (flags == MUSIC_LOOP ? 0 : 1),
			                        Audio::Timestamp(0, loopStart, audioStream->getRate()),
			                        audioStream->getLength()));
		} else {
			_mixer->playStream(Audio::Mixer::kMusicSoundType, &_musicHandle,
			                        Audio::makeLoopingAudioStream(audioStream, (flags == MUSIC_LOOP ? 0 : 1)));
		}
		_digitalMusic = true;
		return;
	}

	if (flags == MUSIC_DEFAULT)
		flags = MUSIC_NORMAL;

	// Load MIDI/XMI resource data
	if (_vm->getGameId() == GID_IHNM && _vm->isMacResources()) {
		// Load the external music file for Mac IHNM
#if 0
		Common::File musicFile;
		char musicFileName[40];
		sprintf(musicFileName, "Music/Music%02x", resourceId);
		musicFile.open(musicFileName);
		resourceSize = musicFile.size();
		resourceData = new byte[resourceSize];
		musicFile.read(resourceData, resourceSize);
		musicFile.close();

		// TODO: The Mac music format is unsupported (QuickTime MIDI)
		// so stop here
#endif
		return;
	} else {
		if (_currentMusicBuffer == &_musicBuffer[1]) {
			_currentMusicBuffer = &_musicBuffer[0];
		} else {
			_currentMusicBuffer = &_musicBuffer[1];
		}
		_vm->_resource->loadResource(_musicContext, resourceId, *_currentMusicBuffer);
	}

	_player->play(_vm, _currentMusicBuffer, (flags & MUSIC_LOOP));
	setVolume(_vm->_musicVolume);
}

void Music::pause() {
	_player->pause();
	_player->setVolume(0);
}

void Music::resume() {
	_player->resume();
	_player->setVolume(_vm->_musicVolume);
}

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

} // End of namespace Saga