1 /* ScummVM - Graphic Adventure Engine
2 *
3 * ScummVM is the legal property of its developers, whose names
4 * are too numerous to list here. Please refer to the COPYRIGHT
5 * file distributed with this source distribution.
6 *
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License
9 * as published by the Free Software Foundation; either version 2
10 * of the License, or (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
20 *
21 */
22
23 /*
24 * This code is based on original Sfinx source code
25 * Copyright (c) 1994-1997 Janus B. Wisniewski and L.K. Avalon
26 */
27
28 #include "cge2/sound.h"
29 #include "common/memstream.h"
30 #include "audio/audiostream.h"
31 #include "audio/decoders/wave.h"
32 #include "audio/mididrv.h"
33 #include "audio/midiparser.h"
34 #include "cge2/cge2.h"
35
36 namespace CGE2 {
37
DataCk(byte * buf,int bufSize)38 DataCk::DataCk(byte *buf, int bufSize) {
39 _buf = buf;
40 _ckSize = bufSize;
41 }
42
~DataCk()43 DataCk::~DataCk() {
44 free(_buf);
45 }
46
Sound(CGE2Engine * vm)47 Sound::Sound(CGE2Engine *vm) : _vm(vm) {
48 _audioStream = nullptr;
49 _soundRepeatCount = 1;
50 open();
51 }
52
~Sound()53 Sound::~Sound() {
54 close();
55 }
56
close()57 void Sound::close() {
58 _vm->_midiPlayer->killMidi();
59 }
60
open()61 void Sound::open() {
62 setRepeat(1);
63 if (_vm->_commandHandlerTurbo != nullptr)
64 _vm->switchSay();
65 play(Audio::Mixer::kSFXSoundType, _vm->_fx->load(99, 99));
66 }
67
setRepeat(int16 count)68 void Sound::setRepeat(int16 count) {
69 _soundRepeatCount = count;
70 }
71
getRepeat()72 int16 Sound::getRepeat() {
73 return _soundRepeatCount;
74 }
75
play(Audio::Mixer::SoundType soundType,DataCk * wav,int pan)76 void Sound::play(Audio::Mixer::SoundType soundType, DataCk *wav, int pan) {
77 if (wav) {
78 stop();
79 _smpinf._saddr = &*(wav->addr());
80 _smpinf._slen = (uint16)wav->size();
81 _smpinf._span = pan;
82 _smpinf._counter = getRepeat();
83 sndDigiStart(&_smpinf, soundType);
84 }
85 }
86
sndDigiStart(SmpInfo * PSmpInfo,Audio::Mixer::SoundType soundType)87 void Sound::sndDigiStart(SmpInfo *PSmpInfo, Audio::Mixer::SoundType soundType) {
88 // Create an audio stream wrapper for sound
89 Common::MemoryReadStream *stream = new Common::MemoryReadStream(PSmpInfo->_saddr,
90 PSmpInfo->_slen, DisposeAfterUse::NO);
91 _audioStream = Audio::makeWAVStream(stream, DisposeAfterUse::YES);
92
93 // Decide which handle to use
94 Audio::SoundHandle *handle = nullptr;
95 switch (soundType) {
96 case Audio::Mixer::kSFXSoundType:
97 handle = &_sfxHandle;
98 break;
99 case Audio::Mixer::kSpeechSoundType:
100 handle = &_speechHandle;
101 break;
102 default:
103 error("Wrong sound type passed to sndDigiStart()");
104 }
105
106 // Start the new sound
107 _vm->_mixer->playStream(soundType, handle,
108 Audio::makeLoopingAudioStream(_audioStream, (uint)PSmpInfo->_counter));
109
110 // CGE pan:
111 // 8 = Center
112 // Less = Left
113 // More = Right
114 _vm->_mixer->setChannelBalance(*handle, (int8)CLIP(((PSmpInfo->_span - 8) * 16), -127, 127));
115 }
116
stop()117 void Sound::stop() {
118 sndDigiStop(_sfxHandle);
119 sndDigiStop(_speechHandle);
120 _audioStream = nullptr;
121 }
122
checkSoundHandles()123 void Sound::checkSoundHandles() {
124 if (!_vm->_mixer->isSoundHandleActive(_speechHandle) && !_vm->_mixer->isSoundHandleActive(_sfxHandle))
125 _smpinf._counter = 0;
126 }
127
sndDigiStop(Audio::SoundHandle & handle)128 void Sound::sndDigiStop(Audio::SoundHandle &handle) {
129 if (_vm->_mixer->isSoundHandleActive(handle))
130 _vm->_mixer->stopHandle(handle);
131 }
132
Fx(CGE2Engine * vm,int size)133 Fx::Fx(CGE2Engine *vm, int size) : _current(nullptr), _vm(vm) {
134 }
135
~Fx()136 Fx::~Fx() {
137 clear();
138 }
139
clear()140 void Fx::clear() {
141 if (_current)
142 delete _current;
143 _current = nullptr;
144 }
145
name(int ref,int sub)146 Common::String Fx::name(int ref, int sub) {
147 const char *fxname = "%.2dfx%.2d.WAV";
148 const char *subName = "%.2dfx%.2d?.WAV";
149 const char *p = (sub) ? subName : fxname;
150 Common::String filename = Common::String::format(p, ref >> 8, ref & 0xFF);
151 if (sub)
152 filename.setChar('@' + sub, 6);
153 return filename;
154 }
155
exist(int ref,int sub)156 bool Fx::exist(int ref, int sub) {
157 return _vm->_resman->exist(name(ref, sub).c_str());
158 }
159
load(int ref,int sub)160 DataCk *Fx::load(int ref, int sub) {
161 Common::String filename = name(ref, sub);
162 EncryptedStream file(_vm, filename.c_str());
163 clear();
164 return (_current = loadWave(&file));
165 }
166
loadWave(EncryptedStream * file)167 DataCk *Fx::loadWave(EncryptedStream *file) {
168 byte *data = (byte *)malloc(file->size());
169
170 if (!data)
171 return 0;
172
173 file->read(data, file->size());
174
175 return new DataCk(data, file->size());
176 }
177
MusicPlayer(CGE2Engine * vm)178 MusicPlayer::MusicPlayer(CGE2Engine *vm) : _vm(vm) {
179 _data = nullptr;
180 _isGM = false;
181
182 MidiPlayer::createDriver();
183
184 int ret = _driver->open();
185 if (ret == 0) {
186 if (_nativeMT32)
187 _driver->sendMT32Reset();
188 else
189 _driver->sendGMReset();
190
191 // TODO: Load cmf.ins with the instrument table. It seems that an
192 // interface for such an operation is supported for AdLib. Maybe for
193 // this card, setting instruments is necessary.
194
195 _driver->setTimerCallback(this, &timerCallback);
196 }
197 _dataSize = -1;
198 }
199
~MusicPlayer()200 MusicPlayer::~MusicPlayer() {
201 killMidi();
202 }
203
killMidi()204 void MusicPlayer::killMidi() {
205 Audio::MidiPlayer::stop();
206
207 free(_data);
208 _data = nullptr;
209 }
210
loadMidi(int ref)211 void MusicPlayer::loadMidi(int ref) {
212 if (_vm->_midiNotify != nullptr)
213 (_vm->*_vm->_midiNotify)();
214
215 // Work out the filename and check the given MIDI file exists
216 Common::String filename = Common::String::format("%.2dSG%.2d.MID", ref >> 8, ref & 0xFF);
217 if (!_vm->_resman->exist(filename.c_str()))
218 return;
219
220 // Stop any currently playing MIDI file
221 killMidi();
222
223 // Read in the data for the file
224 EncryptedStream mid(_vm, filename.c_str());
225 _dataSize = mid.size();
226 _data = (byte *)malloc(_dataSize);
227 mid.read(_data, _dataSize);
228
229 // Start playing the music
230 sndMidiStart();
231 }
232
sndMidiStart()233 void MusicPlayer::sndMidiStart() {
234 _isGM = true;
235
236 MidiParser *parser = MidiParser::createParser_SMF();
237 if (parser->loadMusic(_data, _dataSize)) {
238 parser->setTrack(0);
239 parser->setMidiDriver(this);
240 parser->setTimerRate(_driver->getBaseTempo());
241 parser->property(MidiParser::mpCenterPitchWheelOnUnload, 1);
242
243 _parser = parser;
244
245 syncVolume();
246
247 // Al the tracks are supposed to loop
248 _isLooping = true;
249 _isPlaying = true;
250 }
251 }
252
send(uint32 b)253 void MusicPlayer::send(uint32 b) {
254 if (((b & 0xF0) == 0xC0) && !_isGM && !_nativeMT32) {
255 b = (b & 0xFFFF00FF) | MidiDriver::_mt32ToGm[(b >> 8) & 0xFF] << 8;
256 }
257
258 Audio::MidiPlayer::send(b);
259 }
260
sendToChannel(byte channel,uint32 b)261 void MusicPlayer::sendToChannel(byte channel, uint32 b) {
262 if (!_channelsTable[channel]) {
263 _channelsTable[channel] = (channel == 9) ? _driver->getPercussionChannel() : _driver->allocateChannel();
264 // If a new channel is allocated during the playback, make sure
265 // its volume is correctly initialized.
266 if (_channelsTable[channel])
267 _channelsTable[channel]->volume(_channelsVolume[channel] * _masterVolume / 255);
268 }
269
270 if (_channelsTable[channel])
271 _channelsTable[channel]->send(b);
272 }
273
274 } // End of namespace CGE2
275