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
|
/* ScummVM - Scumm Interpreter
* Copyright (C) 2006 The ScummVM project
*
* 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 "common/stdafx.h"
#include "common/file.h"
#include "parallaction/parallaction.h"
#include "common/stream.h"
#include "sound/midiparser.h"
#include "parallaction/music.h"
namespace Parallaction {
MidiPlayer::MidiPlayer(MidiDriver *driver)
: _driver(driver), _parser(0), _midiData(0), _isLooping(false), _isPlaying(false), _masterVolume(0) {
assert(_driver);
memset(_channelsTable, 0, sizeof(_channelsTable));
memset(_channelsVolume, 0, sizeof(_channelsVolume));
open();
}
MidiPlayer::~MidiPlayer() {
close();
}
void MidiPlayer::play(const char *filename) {
stop();
if (!scumm_strnicmp(_location, "museo", 5)) return;
if (!scumm_strnicmp(_location, "intgrottadopo", 13)) return;
if (!scumm_strnicmp(_location, "caveau", 6)) return;
if (!scumm_strnicmp(_location, "estgrotta", 9)) return;
if (!scumm_strnicmp(_location, "plaza1", 6)) return;
if (!scumm_strnicmp(_location, "endtgz", 6)) return;
char path[PATH_LEN];
sprintf(path, "%s.mid", filename);
Common::File stream;
if (!stream.open(path))
return;
int size = stream.size();
_midiData = (uint8 *)malloc(size);
if (_midiData) {
stream.read(_midiData, 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::updateTimer() {
_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() {
int ret = _driver->open();
if (ret == 0) {
_parser = MidiParser::createParser_SMF();
_parser->setMidiDriver(this);
_parser->setTimerRate(_driver->getBaseTempo());
_driver->setTimerCallback(this, &timerCallback);
}
return ret;
}
void MidiPlayer::close() {
stop();
_mutex.lock();
_driver->setTimerCallback(NULL, NULL);
_driver->close();
_driver = 0;
_parser->setMidiDriver(NULL);
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();
}
} // namespace Parallaction
|
