aboutsummaryrefslogtreecommitdiff
path: root/engines/hugo/sound.cpp
blob: e5f55afcc8bc48a40c3dd63952a6ef3a008d69c9 (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
/* 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.
 *
 * $URL$
 * $Id$
 *
 */

/*
 * This code is based on original Hugo Trilogy source code
 *
 * Copyright (c) 1989-1995 David P. Gray
 *
 */

/* sound.c - sound effects and music support */

#include "common/system.h"

#include "sound/decoders/raw.h"
#include "sound/audiostream.h"
#include "sound/midiparser.h"
#include "sound/mididrv.h"

#include "hugo/hugo.h"
#include "hugo/game.h"
#include "hugo/file.h"
#include "hugo/sound.h"

namespace Hugo {

class MidiPlayer : public MidiDriver {
public:

	enum {
		NUM_CHANNELS = 16
	};

	MidiPlayer(MidiDriver *driver);
	~MidiPlayer();

	void play(uint8 *stream, uint16 size);
	void stop();
	void pause(bool p);
	void updateTimer();
	void adjustVolume(int diff);
	void setVolume(int volume);
	int getVolume() const { return _masterVolume; }
	void setLooping(bool loop) { _isLooping = loop; }

	// MidiDriver interface
	int open();
	void close();
	void send(uint32 b);
	void metaEvent(byte type, byte *data, uint16 length);
	void setTimerCallback(void *timerParam, void (*timerProc)(void *)) { }
	uint32 getBaseTempo() { return _driver ? _driver->getBaseTempo() : 0; }
	MidiChannel *allocateChannel() { return 0; }
	MidiChannel *getPercussionChannel() { return 0; }

private:

	static void timerCallback(void *p);

	MidiDriver *_driver;
	MidiParser *_parser;
	uint8 *_midiData;
	bool _isLooping;
	bool _isPlaying;
	bool _paused;
	int _masterVolume;
	MidiChannel *_channelsTable[NUM_CHANNELS];
	uint8 _channelsVolume[NUM_CHANNELS];
	Common::Mutex _mutex;
};

MidiPlayer::MidiPlayer(MidiDriver *driver)
	: _driver(driver), _parser(0), _midiData(0), _isLooping(false), _isPlaying(false), _paused(false), _masterVolume(0) {
	assert(_driver);
	memset(_channelsTable, 0, sizeof(_channelsTable));
	for (int i = 0; i < NUM_CHANNELS; i++) {
		_channelsVolume[i] = 127;
	}
}

MidiPlayer::~MidiPlayer() {
	close();
}

void MidiPlayer::play(uint8 *stream, uint16 size) {
	if (!stream) {
		stop();
		return;
	}

	_midiData = (uint8 *)malloc(size);
	if (_midiData) {
		memcpy(_midiData, stream, size);
		_mutex.lock();
		_parser->loadMusic(_midiData, size);
		_parser->setTrack(0);
		_isLooping = true;
		_isPlaying = true;
		_mutex.unlock();
	}
}

void MidiPlayer::stop() {
	_mutex.lock();
	if (_isPlaying) {
		_isPlaying = false;
		_parser->unloadMusic();
		free(_midiData);
		_midiData = 0;
	}
	_mutex.unlock();
}

void MidiPlayer::pause(bool p) {
	_paused = p;

	for (int i = 0; i < NUM_CHANNELS; ++i) {
		if (_channelsTable[i]) {
			_channelsTable[i]->volume(_paused ? 0 : _channelsVolume[i] * _masterVolume / 255);
		}
	}
}

void MidiPlayer::updateTimer() {
	if (_paused) {
		return;
	}

	_mutex.lock();
	if (_isPlaying) {
		_parser->onTimer();
	}
	_mutex.unlock();
}

void MidiPlayer::adjustVolume(int diff) {
	setVolume(_masterVolume + diff);
}

void MidiPlayer::setVolume(int volume) {
	_masterVolume = CLIP(volume, 0, 255);
	_mutex.lock();
	for (int i = 0; i < NUM_CHANNELS; ++i) {
		if (_channelsTable[i]) {
			_channelsTable[i]->volume(_channelsVolume[i] * _masterVolume / 255);
		}
	}
	_mutex.unlock();
}

int MidiPlayer::open() {
	_driver->open();

	_parser = MidiParser::createParser_SMF();
	_parser->setMidiDriver(this);
	_parser->setTimerRate(_driver->getBaseTempo());
	_driver->setTimerCallback(this, &timerCallback);

	return 0;
}

void MidiPlayer::close() {
	stop();
	_mutex.lock();
	_driver->setTimerCallback(0, 0);
	_driver->close();
	delete _driver;
	_driver = 0;
	_parser->setMidiDriver(0);
	delete _parser;
	_mutex.unlock();
}

void MidiPlayer::send(uint32 b) {
	byte volume, ch = (byte)(b & 0xF);
	switch (b & 0xFFF0) {
	case 0x07B0: // volume change
		volume = (byte)((b >> 16) & 0x7F);
		_channelsVolume[ch] = volume;
		volume = volume * _masterVolume / 255;
		b = (b & 0xFF00FFFF) | (volume << 16);
		break;
	case 0x7BB0: // all notes off
		if (!_channelsTable[ch]) {
			// channel not yet allocated, no need to send the event
			return;
		}
		break;
	}

	if (!_channelsTable[ch]) {
		_channelsTable[ch] = (ch == 9) ? _driver->getPercussionChannel() : _driver->allocateChannel();
	}
	if (_channelsTable[ch]) {
		_channelsTable[ch]->send(b);
	}
}

void MidiPlayer::metaEvent(byte type, byte *data, uint16 length) {
	switch (type) {
	case 0x2F: // end of Track
		if (_isLooping) {
			_parser->jumpToTick(0);
		} else {
			stop();
		}
		break;
	default:
//		warning("Unhandled meta event: %02x", type);
		break;
	}
}

void MidiPlayer::timerCallback(void *p) {
	MidiPlayer *player = (MidiPlayer *)p;

	player->updateTimer();
}

SoundHandler::SoundHandler(HugoEngine &vm) : _vm(vm) {
	MidiDriver::DeviceHandle dev = MidiDriver::detectDevice(MDT_MIDI | MDT_ADLIB | MDT_PREFER_GM);
	MidiDriver *driver = MidiDriver::createMidi(dev);

	_midiPlayer = new MidiPlayer(driver);
}

void SoundHandler::setMusicVolume() {
	/* Set the FM music volume from config.mvolume (0..100%) */
	
	_midiPlayer->setVolume(_config.musicVolume * 255 / 100);
}

void SoundHandler::stopSound() {
	/* Stop any sound that might be playing */
	_vm._mixer->stopAll();
}

void SoundHandler::stopMusic() {
	/* Stop any tune that might be playing */
	_midiPlayer->stop();
}

void SoundHandler::toggleMusic() {
// Turn music on and off
	_config.musicFl = !_config.musicFl;
	
	_midiPlayer->pause(_config.musicFl);
}

void SoundHandler::toggleSound() {
// Turn digitized sound on and off
	_config.soundFl = !_config.soundFl;
}

void SoundHandler::playMIDI(sound_pt seq_p, uint16 size) {
	_midiPlayer->play(seq_p, size);
}


void SoundHandler::playMusic(int16 tune) {
	/* Read a tune sequence from the sound database and start playing it */
	sound_pt seqPtr;                                // Sequence data from file
	uint16 size;                                    // Size of sequence data

	if (_config.musicFl) {
		_vm.getGameStatus().song = tune;
		seqPtr = _vm.file().getSound(tune, &size);
		playMIDI(seqPtr, size);
	}
}


void SoundHandler::playSound(int16 sound, stereo_t channel, byte priority) {
	/* Produce various sound effects on supplied stereo channel(s) */
	/* Override currently playing sound only if lower or same priority */

	// uint32 dwVolume;                             // Left, right volume of sound
	sound_pt sound_p;                               // Sound data
	uint16 size;                                    // Size of data
	static byte curPriority = 0;                    // Priority of currently playing sound
	//
	/* Sound disabled */
	if (!_config.soundFl || !_vm._mixer->isReady())
		return;
	//
	// // See if last wave still playing - if so, check priority
	// if (waveOutUnprepareHeader(hwav, lphdr, sizeof(WAVEHDR)) == WAVERR_STILLPLAYING)
	//  if (priority < curPriority)                 // Don't override unless priority >= current
	//      return;
	//  else
	//      Stop_sound();
	curPriority = priority;
	//
	/* Get sound data */
	if ((sound_p = _vm.file().getSound(sound, &size)) == 0)
		return;

	Audio::AudioStream *stream = Audio::makeRawStream(sound_p, size, 11025, Audio::FLAG_UNSIGNED);
	_vm._mixer->playStream(Audio::Mixer::kSpeechSoundType, &_soundHandle, stream);

}

void SoundHandler::initSound() {
	/* Initialize for MCI sound and midi */

	_midiPlayer->open();
}

} // End of namespace Hugo