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
|
/* 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 "audio/audiostream.h"
#include "audio/mididrv.h"
#include "audio/midiparser.h"
#include "common/config-manager.h"
#include "common/file.h"
#include "draci/draci.h"
#include "draci/music.h"
namespace Draci {
MusicPlayer::MusicPlayer(const char *pathMask) : _parser(0), _driver(0), _pathMask(pathMask), _looping(false), _isPlaying(false), _isGM(false), _track(-1) {
MidiDriver::DeviceHandle dev = MidiDriver::detectDevice(MDT_MIDI | MDT_ADLIB | MDT_PREFER_GM);
_nativeMT32 = ((MidiDriver::getMusicType(dev) == MT_MT32) || ConfMan.getBool("native_mt32"));
//bool adlib = (MidiDriver::getMusicType(dev) == MT_ADLIB);
_driver = MidiDriver::createMidi(dev);
assert(_driver);
if (_nativeMT32)
_driver->property(MidiDriver::PROP_CHANNEL_MASK, 0x03FE);
memset(_channel, 0, sizeof(_channel));
memset(_channelVolume, 127, sizeof(_channelVolume));
_masterVolume = 0;
_smfParser = MidiParser::createParser_SMF();
_midiMusicData = NULL;
int ret = _driver->open();
if (ret == 0) {
if (_nativeMT32)
_driver->sendMT32Reset();
else
_driver->sendGMReset();
// TODO: Load cmf.ins with the instrument table. It seems that an
// interface for such an operation is supported for AdLib. Maybe for
// this card, setting instruments is necessary.
_driver->setTimerCallback(this, &onTimer);
}
}
MusicPlayer::~MusicPlayer() {
_driver->setTimerCallback(NULL, NULL);
stop();
if (_driver) {
_driver->close();
delete _driver;
_driver = 0;
}
_smfParser->setMidiDriver(NULL);
delete _smfParser;
delete[] _midiMusicData;
}
void MusicPlayer::setChannelVolume(int channel) {
int newVolume = _channelVolume[channel] * _masterVolume / 255;
debugC(3, kDraciSoundDebugLevel, "Music channel %d: volume %d->%d",
channel, _channelVolume[channel], newVolume);
_channel[channel]->volume(newVolume);
}
void MusicPlayer::setVolume(int volume) {
Common::StackLock lock(_mutex);
volume = CLIP(volume, 0, 255);
if (_masterVolume == volume)
return;
_masterVolume = volume;
for (int i = 0; i < 16; ++i) {
if (_channel[i]) {
setChannelVolume(i);
}
}
}
void MusicPlayer::send(uint32 b) {
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 a new channel is allocated during the playback, make sure
// its volume is correctly initialized.
if (_channel[channel])
setChannelVolume(channel);
}
if (_channel[channel])
_channel[channel]->send(b);
}
void MusicPlayer::metaEvent(byte type, byte *data, uint16 length) {
switch (type) {
case 0x2F: // End of Track
if (_looping)
_parser->jumpToTick(0);
else
stop();
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->_parser)
music->_parser->onTimer();
}
void MusicPlayer::playSMF(int track, bool loop) {
if (_isPlaying && track == _track) {
debugC(2, kDraciSoundDebugLevel, "Already plaing track %d", track);
return;
}
stop();
_isGM = true;
// Load MIDI resource data
Common::File musicFile;
char musicFileName[40];
sprintf(musicFileName, _pathMask.c_str(), track);
musicFile.open(musicFileName);
if (!musicFile.isOpen()) {
debugC(2, kDraciSoundDebugLevel, "Cannot open track %d", track);
return;
}
int midiMusicSize = musicFile.size();
delete[] _midiMusicData;
_midiMusicData = new byte[midiMusicSize];
musicFile.read(_midiMusicData, midiMusicSize);
musicFile.close();
if (_smfParser->loadMusic(_midiMusicData, midiMusicSize)) {
MidiParser *parser = _smfParser;
parser->setTrack(0);
parser->setMidiDriver(this);
parser->setTimerRate(_driver->getBaseTempo());
parser->property(MidiParser::mpCenterPitchWheelOnUnload, 1);
_parser = parser;
syncVolume();
_looping = loop;
_isPlaying = true;
_track = track;
debugC(2, kDraciSoundDebugLevel, "Playing track %d", track);
} else {
debugC(2, kDraciSoundDebugLevel, "Cannot play track %d", track);
}
}
void MusicPlayer::stop() {
Common::StackLock lock(_mutex);
if (!_isPlaying)
return;
debugC(2, kDraciSoundDebugLevel, "Stopping track %d", _track);
_track = -1;
_isPlaying = false;
if (_parser) {
_parser->unloadMusic();
_parser = NULL;
}
}
void MusicPlayer::pause() {
debugC(2, kDraciSoundDebugLevel, "Pausing track %d", _track);
setVolume(-1);
_isPlaying = false;
}
void MusicPlayer::resume() {
debugC(2, kDraciSoundDebugLevel, "Resuming track %d", _track);
syncVolume();
_isPlaying = true;
}
void MusicPlayer::syncVolume() {
int volume = ConfMan.getInt("music_volume");
if (ConfMan.getBool("mute")) {
volume = -1;
}
debugC(2, kDraciSoundDebugLevel, "Syncing music volume to %d", volume);
setVolume(volume);
}
} // End of namespace Draci
|
