scummvm/engines/lure/sound.cpp
Coen Rampen 4368a4f69d LURE: Fix duplicate looping sounds
Under some circumstances, looping sounds could be repeatedly triggered and
multiple copies of the same sound would stack up and consume all the sound
channels. Additionally, this could cause a crash because the code did not deal
well with this situation.
The engine will now check if a sound is already playing before adding it when
loading a savegame. It will also not try to play a sound if not enough channels
are available.
2023-11-23 22:08:30 +01:00

1063 lines
32 KiB
C++

/* 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 3 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, see <http://www.gnu.org/licenses/>.
*
*/
#include "lure/sound.h"
#include "lure/game.h"
#include "lure/lure.h"
#include "lure/memory.h"
#include "lure/res.h"
#include "lure/room.h"
#include "lure/surface.h"
#include "common/algorithm.h"
#include "common/config-manager.h"
#include "common/endian.h"
#include "audio/adlib_ms.h"
#include "audio/midiparser.h"
namespace Common {
DECLARE_SINGLETON(Lure::SoundManager);
}
namespace Lure {
//#define SOUND_CROP_CHANNELS
SoundManager::SoundManager() {
Disk &disk = Disk::getReference();
_descs = disk.getEntry(SOUND_DESC_RESOURCE_ID);
_numDescs = _descs->size() / sizeof(SoundDescResource);
_soundData = nullptr;
_paused = false;
MidiDriver::DeviceHandle dev = MidiDriver::detectDevice(MDT_MIDI | MDT_ADLIB | MDT_PREFER_MT32);
_isRoland = MidiDriver::getMusicType(dev) != MT_ADLIB;
_nativeMT32 = ((MidiDriver::getMusicType(dev) == MT_MT32) || ConfMan.getBool("native_mt32"));
Common::fill(_sourcesInUse, _sourcesInUse + LURE_MAX_SOURCES, false);
if (_isRoland) {
_driver = _mt32Driver = new MidiDriver_MT32GM(MT_MT32);
} else {
_driver = new MidiDriver_ADLIB_Lure();
}
_driver->property(MidiDriver::PROP_USER_VOLUME_SCALING, true);
int statusCode = _driver->open();
if (statusCode)
error("Sound driver returned error code %d", statusCode);
syncSounds();
}
SoundManager::~SoundManager() {
if (_driver)
_driver->setTimerCallback(this, nullptr);
removeSounds();
_activeSounds.clear();
_soundMutex.lock();
_playingSounds.clear();
_soundMutex.unlock();
delete _descs;
delete _soundData;
if (_driver) {
_driver->stopAllNotes();
_driver->close();
delete _driver;
_driver = nullptr;
}
}
void SoundManager::saveToStream(Common::WriteStream *stream) {
debugC(ERROR_BASIC, kLureDebugSounds, "SoundManager::saveToStream");
SoundListIterator i;
for (i = _activeSounds.begin(); i != _activeSounds.end(); ++i) {
stream->writeByte((*i)->soundNumber);
}
stream->writeByte(0xff);
}
void SoundManager::loadFromStream(Common::ReadStream *stream) {
// Stop any existing sounds playing
killSounds();
// Load any playing sounds
uint8 soundNumber;
while ((soundNumber = stream->readByte()) != 0xff) {
uint8 soundIndex = descIndexOf(soundNumber);
if (soundIndex != 0xff) {
// Make sure that the sound is allowed to be restored
SoundDescResource &rec = soundDescs()[soundIndex];
if ((rec.flags & SF_RESTORE) != 0)
// Requeue the sound for playing
addSound2(soundIndex);
}
}
}
void SoundManager::loadSection(uint16 sectionId) {
debugC(ERROR_BASIC, kLureDebugSounds, "SoundManager::loadSection = %xh", sectionId);
killSounds();
if (_soundData) {
delete _soundData;
_driver->setTimerCallback(this, nullptr);
}
_soundData = Disk::getReference().getEntry(sectionId);
_soundsTotal = *_soundData->data();
_driver->setTimerCallback(this, &onTimer);
}
bool SoundManager::initCustomTimbres(bool canAbort) {
if (!_isRoland || !_nativeMT32 || _mt32Driver == nullptr)
return false;
if (!_soundData)
error("SoundManager::initCustomTimbres - sound section has not been specified");
// Locate timbre data
uint32 headerSize = READ_LE_UINT32(_soundData->data() + 2); // Skip past the number of sounds
uint16 timbreDataHeaderOffset = _soundsTotal * 4 + 2;
if (timbreDataHeaderOffset + 6u > headerSize) {
warning("SoundManager::initCustomTimbres - could not find timbre data header");
return false;
}
uint32 timbreDataOffset = READ_LE_UINT32(_soundData->data() + timbreDataHeaderOffset + 2); // Skip past end of header mark
if (timbreDataOffset + 17259 > _soundData->size()) {
warning("SoundManager::initCustomTimbres - timbre data smaller than expected");
return false;
}
byte *timbreData = _soundData->data() + timbreDataOffset;
AudioInitIcon *icon = new AudioInitIcon();
icon->show();
uint32 iconTime = g_system->getMillis();
// Send SysExes
// System Area
uint32 address = 0x10 << 14; // 10 00 00
static const uint8 systemAreaSysExLengths[5] = { 1, 3, 9, 9, 1 };
for (int i = 0; i < 5; ++i) {
_mt32Driver->sysExMT32(timbreData, systemAreaSysExLengths[i], address, true);
address += systemAreaSysExLengths[i];
timbreData += systemAreaSysExLengths[i];
}
// Patch Temporary Area
address = 0x03 << 14; // 03 00 00
int sysexLength = 16;
for (int i = 0; i < 8; ++i) {
_mt32Driver->sysExMT32(timbreData, sysexLength, address, true);
address += sysexLength;
timbreData += sysexLength;
}
// Timbre Memory
address = 0x08 << 14; // 08 00 00
sysexLength = 246;
for (int i = 0; i < 64; ++i) {
_mt32Driver->sysExMT32(timbreData, sysexLength, address, true);
address += 256;
timbreData += sysexLength;
}
// Patch Memory
address = 0x05 << 14; // 05 00 00
sysexLength = 8;
for (int i = 0; i < 128; ++i) {
_mt32Driver->sysExMT32(timbreData, sysexLength, address, true);
address += sysexLength;
timbreData += sysexLength;
}
// Rhythm Part Setup Temporary Area
address = 0x03 << 14 | 0x01 << 7 | 0x10; // 03 01 10
sysexLength = 4;
for (int i = 0; i < 85; ++i) {
_mt32Driver->sysExMT32(timbreData, sysexLength, address, true);
address += sysexLength;
timbreData += sysexLength;
}
// Wait until SysExes have been transmitted.
bool result = false;
while (!_mt32Driver->isReady()) {
Events &events = Events::getReference();
if (events.interruptableDelay(10)) {
if (LureEngine::getReference().shouldQuit() ||
(canAbort && events.type() == Common::EVENT_KEYDOWN && events.event().kbd.keycode == 27)) {
// User has quit the game or pressed Escape.
_mt32Driver->clearSysExQueue();
result = true;
break;
}
}
// Blink the audio initialization icon every 500 ms
if (g_system->getMillis() > iconTime + 500) {
icon->toggleVisibility();
iconTime = g_system->getMillis();
}
}
icon->hide();
delete icon;
return result;
}
void SoundManager::bellsBodge() {
debugC(ERROR_BASIC, kLureDebugSounds, "SoundManager::bellsBodge");
Resources &res = Resources::getReference();
Room &room = Room::getReference();
RoomData *roomData = res.getRoom(room.roomNumber());
if (roomData && roomData->areaFlag != res.fieldList().getField(AREA_FLAG)) {
res.fieldList().setField(AREA_FLAG, roomData->areaFlag);
switch (roomData->areaFlag) {
case 0:
killSound(1);
break;
case 1:
addSound(2);
killSound(33);
break;
case 2:
setVolume(0, 15);
// fall through
default:
killSound(1);
break;
}
}
}
void SoundManager::killSounds() {
debugC(ERROR_BASIC, kLureDebugSounds, "SoundManager::killSounds");
// Stop the player playing all sounds
musicInterface_KillAll();
// Clear the active sounds
_activeSounds.clear();
}
void SoundManager::addSound(uint8 soundIndex, bool tidyFlag) {
debugC(ERROR_BASIC, kLureDebugSounds, "SoundManager::addSound index=%d", soundIndex);
Game &game = Game::getReference();
if (tidyFlag)
tidySounds();
if (game.preloadFlag())
// Don't add a sound if in room preloading
return;
SoundDescResource &rec = soundDescs()[soundIndex];
int numChannels;
if (_isRoland)
numChannels = (rec.numChannels & 3);
else
numChannels = ((rec.numChannels >> 2) & 3);
if (numChannels == 0)
// Don't play sounds for which 0 channels are defined.
return;
SoundDescResource *newEntry = new SoundDescResource();
newEntry->soundNumber = rec.soundNumber;
newEntry->channel = rec.channel;
newEntry->numChannels = numChannels;
newEntry->flags = rec.flags;
newEntry->volume = rec.volume;
_activeSounds.push_back(SoundList::value_type(newEntry));
musicInterface_Play(rec.soundNumber, false, numChannels, newEntry->volume);
}
void SoundManager::addSound2(uint8 soundIndex) {
debugC(ERROR_BASIC, kLureDebugSounds, "SoundManager::addSound2 index=%d", soundIndex);
tidySounds();
if (soundIndex == 6) {
// Chinese torture
stopSound(6); // sometimes its still playing when restarted
addSound(6, false);
} else {
SoundDescResource &descEntry = soundDescs()[soundIndex];
SoundDescResource *rec = findSound(descEntry.soundNumber);
if (rec == nullptr)
// Sound isn't active, so go and add it
addSound(soundIndex, false);
}
}
void SoundManager::stopSound(uint8 soundIndex) {
debugC(ERROR_BASIC, kLureDebugSounds, "SoundManager::stopSound index=%d", soundIndex);
SoundDescResource &rec = soundDescs()[soundIndex];
musicInterface_Stop(rec.soundNumber);
}
void SoundManager::killSound(uint8 soundNumber) {
debugC(ERROR_BASIC, kLureDebugSounds, "SoundManager::stopSound soundNumber=%d", soundNumber);
musicInterface_Stop(soundNumber);
}
void SoundManager::setVolume(uint8 soundNumber, uint8 volume) {
debugC(ERROR_BASIC, kLureDebugSounds, "SoundManager::setVolume soundNumber=%d, volume=%d",
soundNumber, volume);
musicInterface_TidySounds();
SoundDescResource *entry = findSound(soundNumber);
if (entry)
musicInterface_SetVolume(entry->soundNumber, volume);
}
uint8 SoundManager::descIndexOf(uint8 soundNumber) {
SoundDescResource *rec = soundDescs();
for (uint8 index = 0; index < _numDescs; ++index, ++rec) {
if (rec->soundNumber == soundNumber)
return index;
}
return 0xff; // Couldn't find entry
}
// Used to sync the volume for all channels with the Config Manager
//
void SoundManager::syncSounds() {
musicInterface_TidySounds();
_driver->syncSoundSettings();
}
SoundDescResource *SoundManager::findSound(uint8 soundNumber) {
debugC(ERROR_BASIC, kLureDebugSounds, "SoundManager::findSound soundNumber=%d", soundNumber);
SoundListIterator i;
for (i = _activeSounds.begin(); i != _activeSounds.end(); ++i) {
SoundDescResource *rec = (*i).get();
if (rec->soundNumber == soundNumber) {
debugC(ERROR_INTERMEDIATE, kLureDebugSounds, "SoundManager::findSound - sound found");
return rec;
}
}
// Signal that sound wasn't found
debugC(ERROR_INTERMEDIATE, kLureDebugSounds, "SoundManager::findSound - sound not found");
return nullptr;
}
void SoundManager::tidySounds() {
debugC(ERROR_INTERMEDIATE, kLureDebugSounds, "SoundManager::tidySounds");
SoundListIterator i = _activeSounds.begin();
while (i != _activeSounds.end()) {
SoundDescResource const &rec = **i;
if (musicInterface_CheckPlaying(rec.soundNumber))
// Still playing, so move to next entry
++i;
else {
i = _activeSounds.erase(i);
}
}
}
void SoundManager::removeSounds() {
debugC(ERROR_BASIC, kLureDebugSounds, "SoundManager::removeSounds");
bellsBodge();
SoundListIterator i = _activeSounds.begin();
while (i != _activeSounds.end()) {
SoundDescResource const &rec = **i;
if ((rec.flags & SF_IN_USE) != 0)
musicInterface_Stop(rec.soundNumber);
++i;
}
}
void SoundManager::restoreSounds() {
debugC(ERROR_BASIC, kLureDebugSounds, "SoundManager::restoreSounds");
SoundListIterator i = _activeSounds.begin();
while (i != _activeSounds.end()) {
SoundDescResource const &rec = **i;
if ((rec.numChannels != 0) && ((rec.flags & SF_RESTORE) != 0)) {
musicInterface_Play(rec.soundNumber, false, rec.numChannels, rec.volume);
}
++i;
}
}
bool SoundManager::fadeOut() {
debugC(ERROR_BASIC, kLureDebugSounds, "SoundManager::fadeOut");
Events &events = Events::getReference();
bool result = false;
// Fade out all the active sounds
musicInterface_TidySounds();
_driver->startFade(3000, 0);
while (_driver->isFading()) {
if (events.interruptableDelay(100)) {
result = ((events.type() == Common::EVENT_KEYDOWN && events.event().kbd.keycode == 27) ||
LureEngine::getReference().shouldQuit());
_driver->abortFade();
break;
}
}
// Kill all the sounds
musicInterface_KillAll();
_driver->setSourceVolume(MidiDriver_Multisource::DEFAULT_SOURCE_NEUTRAL_VOLUME);
return result;
}
void SoundManager::pause() {
_paused = true;
_soundMutex.lock();
MusicListIterator i;
for (i = _playingSounds.begin(); i != _playingSounds.end(); ++i) {
(**i).pauseMusic();
}
_soundMutex.unlock();
// Terminate any hanging notes, just in case
_driver->stopAllNotes();
}
void SoundManager::resume() {
_paused = false;
_soundMutex.lock();
MusicListIterator i;
for (i = _playingSounds.begin(); i != _playingSounds.end(); ++i) {
(**i).resumeMusic();
}
_soundMutex.unlock();
}
/*------------------------------------------------------------------------*/
// musicInterface_Play
// Play the specified sound
void SoundManager::musicInterface_Play(uint8 soundNumber, bool isMusic, uint8 numChannels, uint8 volume) {
debugC(ERROR_INTERMEDIATE, kLureDebugSounds, "musicInterface_Play soundNumber=%d", soundNumber);
Game &game = Game::getReference();
if (!_soundData)
error("Sound section has not been specified");
uint8 soundNum = soundNumber & 0x7f;
if (soundNum > _soundsTotal)
error("Invalid sound index %d requested", soundNum);
if (_driver == nullptr)
// Only play sounds if a sound driver is active
return;
// Most significant bit indicates if the track should loop or not
bool loop = (soundNumber & 0x80) != 0;
if (!game.soundFlag())
// Don't play sounds if sound is turned off
return;
uint32 dataOfs = READ_LE_UINT32(_soundData->data() + soundNum * 4 + 2);
uint8 *soundStart = _soundData->data() + dataOfs;
uint32 dataSize;
if (soundNum == _soundsTotal - 1)
dataSize = _soundData->size() - dataOfs;
else {
uint32 nextDataOfs = READ_LE_UINT32(_soundData->data() + (soundNum + 1) * 4 + 2);
dataSize = nextDataOfs - dataOfs;
}
// Note: the original interpreter seems to keep track of the "volume"
// (velocity) adjustment last used for each MIDI channel. The volume
// is not set in the few instances where musicInterface_Play is used
// directly to play a sound instead of addSound (mostly cutscenes).
// As a result, the volume adjustment is used that was last set on
// the MIDI channel by whatever sound played there previously.
// I think this is unintentional, so in ScummVM volume is set to 80h
// (neutral) by default when calling musicInterface_Play without
// specifying volume.
_soundMutex.lock();
int8 source = -1;
if (isMusic) {
source = 0;
} else {
for (int i = 1; i < LURE_MAX_SOURCES; ++i) {
if (!_sourcesInUse[i]) {
source = i;
break;
}
}
}
if (source == -1) {
warning("Insufficient sources to play sound %i", soundNumber);
} else {
_sourcesInUse[source] = true;
MidiMusic *sound = new MidiMusic(_driver, soundNum, isMusic,
loop, source, numChannels, soundStart, dataSize, volume);
_playingSounds.push_back(MusicList::value_type(sound));
}
_soundMutex.unlock();
}
// musicInterface_Stop
// Stops the specified sound from playing
void SoundManager::musicInterface_Stop(uint8 soundNumber) {
debugC(ERROR_INTERMEDIATE, kLureDebugSounds, "musicInterface_Stop soundNumber=%d", soundNumber);
musicInterface_TidySounds();
uint8 soundNum = soundNumber & 0x7f;
_soundMutex.lock();
MusicListIterator i;
for (i = _playingSounds.begin(); i != _playingSounds.end(); ++i) {
if ((*i)->soundNumber() == soundNum) {
if ((*i)->getSource() >= 0)
_sourcesInUse[(*i)->getSource()] = false;
_playingSounds.erase(i);
break;
}
}
_soundMutex.unlock();
}
// musicInterface_CheckPlaying
// Returns true if a sound is still playing
bool SoundManager::musicInterface_CheckPlaying(uint8 soundNumber) {
debugC(ERROR_DETAILED, kLureDebugSounds, "musicInterface_CheckPlaying soundNumber=%d", soundNumber);
musicInterface_TidySounds();
uint8 soundNum = soundNumber & 0x7f;
bool result = false;
_soundMutex.lock();
MusicListIterator i;
for (i = _playingSounds.begin(); i != _playingSounds.end(); ++i) {
if ((*i)->soundNumber() == soundNum) {
result = true;
break;
}
}
_soundMutex.unlock();
return result;
}
// musicInterface_SetVolume
// Sets the volume of the specified channel
void SoundManager::musicInterface_SetVolume(uint8 soundNumber, uint8 volume) {
debugC(ERROR_INTERMEDIATE, kLureDebugSounds, "musicInterface_SetVolume soundNumber=%d, volume=%d",
soundNumber, volume);
musicInterface_TidySounds();
_soundMutex.lock();
MusicListIterator i;
for (i = _playingSounds.begin(); i != _playingSounds.end(); ++i) {
MidiMusic &music = **i;
if (music.soundNumber() == soundNumber)
music.setVolume(volume);
}
_soundMutex.unlock();
}
// musicInterface_KillAll
// Stops all currently active sounds playing
void SoundManager::musicInterface_KillAll() {
debugC(ERROR_INTERMEDIATE, kLureDebugSounds, "musicInterface_KillAll");
musicInterface_TidySounds();
_soundMutex.lock();
MusicListIterator i;
for (i = _playingSounds.begin(); i != _playingSounds.end(); ++i) {
(*i)->stopMusic();
}
Common::fill(_sourcesInUse, _sourcesInUse + LURE_MAX_SOURCES, false);
_playingSounds.clear();
_activeSounds.clear();
_soundMutex.unlock();
}
// musicInterface_ContinuePlaying
// The original player used this method for any sound managers needing continual calls
void SoundManager::musicInterface_ContinuePlaying() {
// No implementation needed
}
/*
* TL;DR: TrashReverb does not seem to work correctly in the original interpreter
* and I don't know what the developer's intentions were, so I've disabled it in
* ScummVM.
*
* In the original interpreter, TrashReverb sends a SysEx to the MT-32 which sets
* the reverb parameters to mode Room, time 1, level 0. This practically turns off
* reverb. It is triggered by opening a door in an outdoors location in the town.
* The SysEx is sent when the door sound starts, and again 40ms after the first
* one. TrashReverb also seems to be triggered when a door is opened offscreen (by
* an NPC).
* This means that, as soon as you enter town, reverb is turned off when the first
* door is opened. It is not turned back on. Reverb is restored only when you quit
* and restart the game (during MT-32 initialization); it is then turned off again
* when the first door outside in town is opened. Turning off the reverb
* repeatedly (twice whenever a door is opened) does not seem to accomplish
* anything.
* The best explanation for this behavior I can come up with is that the developer
* intended to disable reverb while playing a door opening sound outdoors. The
* second SysEx when opening a door was meant to turn reverb back on, but turns it
* off again because of a bug. Also, TrashReverb being triggered by doors opening
* offscreen would be a bug. There is a third problem: the door opening sound lasts
* much longer than 40 ms, so turning reverb back on 40 ms after starting the door
* opening sound still results in a noticeable reverb. All in all this explanation
* is not entirely convicing.
* Another explanation would be that reverb was only meant to be on for the first
* part of the game and should be turned off from the town onwards (this is what
* the implementation in the original interpreter effectively does). However, why
* disable reverb when opening a door, and not f.e. when the player first enters
* a town screen? And why is it not immediately turned off when a player loads a
* savegame of a point later in the game? And why is reverb repeatedly disabled?
* This does not make much sense either.
* All in all, I am convinced that this functionality does not work correctly in
* the original interpreter, but I don't know what the developer's intentions
* were either. So I can't make a proper implementation for this, and I think it
* is best left disabled.
*/
// musicInterface_TrashReverb
// Trashes reverb on actively playing sounds
void SoundManager::musicInterface_TrashReverb() {
debugC(ERROR_INTERMEDIATE, kLureDebugSounds, "musicInterface_TrashReverb");
/*
if (_isRoland) {
// Set reverb parameters to mode Room, time 1, level 0
static const byte sysExData[] = { 0x00, 0x00, 0x00 };
_mt32Driver->sysExMT32(sysExData, 3, 0x10 << 14 | 0x00 << 7 | 0x01);
}
*/
}
// musicInterface_KillAll
// Scans all the active sounds and deallocates any objects that have finished playing
void SoundManager::musicInterface_TidySounds() {
debugC(ERROR_DETAILED, kLureDebugSounds, "musicInterface_TidySounds");
_soundMutex.lock();
MusicListIterator i = _playingSounds.begin();
while (i != _playingSounds.end()) {
if (!(*i)->isPlaying()) {
if ((*i)->getSource() >= 0)
_sourcesInUse[(*i)->getSource()] = false;
i = _playingSounds.erase(i);
} else {
++i;
}
}
_soundMutex.unlock();
}
void SoundManager::onTimer(void *data) {
SoundManager *snd = (SoundManager *) data;
snd->doTimer();
}
void SoundManager::doTimer() {
if (_paused)
return;
_soundMutex.lock();
MusicListIterator i;
for (i = _playingSounds.begin(); i != _playingSounds.end(); ++i) {
MidiMusic &music = **i;
if (music.isPlaying())
music.onTimer();
}
_soundMutex.unlock();
}
/*------------------------------------------------------------------------*/
MidiMusic::MidiMusic(MidiDriver_Multisource *driver, uint8 soundNum, bool isMus, bool loop,
int8 source, uint8 numChannels, void *soundData, uint32 size, uint8 volume) {
_driver = driver;
assert(_driver);
_mt32Driver = dynamic_cast<MidiDriver_MT32GM *>(_driver);
assert(!Sound.isRoland() || _mt32Driver);
_source = source;
_soundNumber = soundNum;
_isMusic = isMus;
_loop = loop;
_numChannels = numChannels;
_volume = volume;
_parser = MidiParser::createParser_SMF(source);
_parser->setMidiDriver(this);
_parser->setTimerRate(_driver->getBaseTempo());
// All Notes Off on all channels does not work with multiple MIDI sources
_parser->property(MidiParser::mpDisableAllNotesOffMidiEvents, 1);
_parser->property(MidiParser::mpAutoLoop, _loop);
_soundData = (uint8 *)soundData;
_soundSize = size;
// Check whether the music data is compressed - if so, decompress it for the duration
// of playing the sound
_decompressedSound = nullptr;
if ((*_soundData == 'C') || (*_soundData == 'c')) {
uint32 packedSize = size - 0x201;
_decompressedSound = Memory::allocate(packedSize * 2);
uint16 *data = (uint16 *)(_soundData + 1);
uint16 *dataDest = (uint16 *) _decompressedSound->data();
byte *idx = ((byte *)data) + 0x200;
for (uint i = 0; i < packedSize; i++)
#if defined(SCUMM_NEED_ALIGNMENT)
memcpy(dataDest++, (byte *)((byte *)data + *(idx + i) * sizeof(uint16)), sizeof(uint16));
#else
*dataDest++ = data[*(idx + i)];
#endif
_soundData = _decompressedSound->data() + ((*_soundData == 'c') ? 1 : 0);
_soundSize = _decompressedSound->size();
}
playMusic();
}
MidiMusic::~MidiMusic() {
_parser->unloadMusic();
if (_isPlaying)
_driver->deinitSource(_source);
delete _parser;
delete _decompressedSound;
}
void MidiMusic::setVolume(int volume) {
volume = CLIP(volume, 0, 255);
_volume = volume;
}
void MidiMusic::playMusic() {
debugC(ERROR_DETAILED, kLureDebugSounds, "MidiMusic::PlayMusic playing sound %d", _soundNumber);
if (Sound.isRoland() && !_isMusic) {
bool result = _mt32Driver->allocateSourceChannels(_source, _numChannels);
if (!result) {
stopMusic();
return;
}
}
_parser->loadMusic(_soundData, _soundSize);
_parser->setTrack(0);
_isPlaying = true;
}
void MidiMusic::send(uint32 b) {
send(-1, b);
}
void MidiMusic::send(int8 source, uint32 b) {
if ((b & 0xFFF0) == 0x18B0) {
if (Sound.isRoland())
// Some tracks use CC 18. This is undefined in the MIDI standard
// and does nothing on an MT-32. Not sending this to the device
// in case it is a GM device with non-standard behavior for this CC.
return;
} else if (((b & 0xF0) == 0x90)) {
// Note On
if (Sound.isRoland()) {
// Scale velocity with sound resource volume
byte velocity = (b >> 16) & 0x7F;
velocity = (velocity * _volume) >> 7;
if (velocity > 0x7F) velocity = 0x7F;
b = (b & 0xFF00FFFF) | (velocity << 16);
}
} else if (((b & 0xF0) == 0x80)) {
// Note Off
if (Sound.isRoland()) {
// Strip velocity
b &= 0xFF00FFFF;
}
} else if (((b & 0xF0) == 0xD0)) {
// Channel aftertouch
if (Sound.isRoland()) {
// Some tracks contain aftertouch events, but the MT-32 does
// not support this and the original interpreter does not send
// them to the device.
return;
}
}
_driver->send(source, b);
}
void MidiMusic::metaEvent(byte type, byte *data, uint16 length) {
metaEvent(-1, type, data, length);
}
void MidiMusic::metaEvent(int8 source, byte type, byte *data, uint16 length) {
if (type == MIDI_META_END_OF_TRACK)
stopMusic();
_driver->metaEvent(source, type, data, length);
}
void MidiMusic::onTimer() {
if (_isPlaying)
_parser->onTimer();
}
void MidiMusic::stopMusic() {
debugC(ERROR_DETAILED, kLureDebugSounds, "MidiMusic::stopMusic sound %d", _soundNumber);
_isPlaying = false;
_parser->unloadMusic();
_driver->deinitSource(_source);
}
void MidiMusic::pauseMusic() {
_parser->pausePlaying();
}
void MidiMusic::resumeMusic() {
_parser->resumePlaying();
}
// Note that the values higher than 0xF000 are one octave higher than the other
// values. Other than that only the lower 10 bits are significant.
const uint16 MidiDriver_ADLIB_Lure::OPL_FREQUENCY_LOOKUP[192] = {
0x02B2, 0x02B4, 0x02B7, 0x02B9, 0x02BC, 0x02BE, 0x02C1, 0x02C3, 0x02C6, 0x02C9, 0x02CB, 0x02CE, 0x02D0, 0x02D3, 0x02D6, 0x02D8,
0x02DB, 0x02DD, 0x02E0, 0x02E3, 0x02E5, 0x02E8, 0x02EB, 0x02ED, 0x02F0, 0x02F3, 0x02F6, 0x02F8, 0x02FB, 0x02FE, 0x0301, 0x0303,
0x0306, 0x0309, 0x030C, 0x030F, 0x0311, 0x0314, 0x0317, 0x031A, 0x031D, 0x0320, 0x0323, 0x0326, 0x0329, 0x032B, 0x032E, 0x0331,
0x0334, 0x0337, 0x033A, 0x033D, 0x0340, 0x0343, 0x0346, 0x0349, 0x034C, 0x034F, 0x0352, 0x0356, 0x0359, 0x035C, 0x035F, 0x0362,
0x0365, 0x0368, 0x036B, 0x036F, 0x0372, 0x0375, 0x0378, 0x037B, 0x037F, 0x0382, 0x0385, 0x0388, 0x038C, 0x038F, 0x0392, 0x0395,
0x0399, 0x039C, 0x039F, 0x03A3, 0x03A6, 0x03A9, 0x03AD, 0x03B0, 0x03B4, 0x03B7, 0x03BB, 0x03BE, 0x03C1, 0x03C5, 0x03C8, 0x03CC,
0x03CF, 0x03D3, 0x03D7, 0x03DA, 0x03DE, 0x03E1, 0x03E5, 0x03E8, 0x03EC, 0x03F0, 0x03F3, 0x03F7, 0x03FB, 0x03FE, 0xFE01, 0xFE03,
0xFE05, 0xFE07, 0xFE08, 0xFE0A, 0xFE0C, 0xFE0E, 0xFE10, 0xFE12, 0xFE14, 0xFE16, 0xFE18, 0xFE1A, 0xFE1C, 0xFE1E, 0xFE20, 0xFE21,
0xFE23, 0xFE25, 0xFE27, 0xFE29, 0xFE2B, 0xFE2D, 0xFE2F, 0xFE31, 0xFE34, 0xFE36, 0xFE38, 0xFE3A, 0xFE3C, 0xFE3E, 0xFE40, 0xFE42,
0xFE44, 0xFE46, 0xFE48, 0xFE4A, 0xFE4C, 0xFE4F, 0xFE51, 0xFE53, 0xFE55, 0xFE57, 0xFE59, 0xFE5C, 0xFE5E, 0xFE60, 0xFE62, 0xFE64,
0xFE67, 0xFE69, 0xFE6B, 0xFE6D, 0xFE6F, 0xFE72, 0xFE74, 0xFE76, 0xFE79, 0xFE7B, 0xFE7D, 0xFE7F, 0xFE82, 0xFE84, 0xFE86, 0xFE89,
0xFE8B, 0xFE8D, 0xFE90, 0xFE92, 0xFE95, 0xFE97, 0xFE99, 0xFE9C, 0xFE9E, 0xFEA1, 0xFEA3, 0xFEA5, 0xFEA8, 0xFEAA, 0xFEAD, 0xFEAF
};
MidiDriver_ADLIB_Lure::MidiDriver_ADLIB_Lure() :
MidiDriver_ADLIB_Multisource(OPL::Config::kOpl2),
_pitchBendSensitivity(1) {
for (int i = 0; i < LURE_MAX_SOURCES; i++) {
for (int j = 0; j < MIDI_CHANNEL_COUNT; j++) {
memset(_instrumentDefs, 0, sizeof(_instrumentDefs));
}
}
// The MIDI data uses monophonic channels and the original interpreter
// allocates a fixed OPL channel to each MIDI channel of each source. This
// behavior is similar to the static allocation mode, though the actual
// channel allocations are a bit different.
_allocationMode = ALLOCATION_MODE_STATIC;
// These global settings are different from the base class defaults.
_modulationDepth = MODULATION_DEPTH_LOW;
_vibratoDepth = VIBRATO_DEPTH_LOW;
}
void MidiDriver_ADLIB_Lure::channelAftertouch(uint8 channel, uint8 pressure, uint8 source) {
_activeNotesMutex.lock();
// Find the active note on the specified channel.
for (int i = 0; i < _numMelodicChannels; i++) {
uint8 oplChannel = _melodicChannels[i];
if (_activeNotes[oplChannel].noteActive && _activeNotes[oplChannel].source == source &&
_activeNotes[oplChannel].channel == channel) {
// Set the velocity of the note and recalculate and write the
// volume.
_activeNotes[oplChannel].velocity = pressure;
recalculateVolumes(channel, source);
break;
}
}
_activeNotesMutex.unlock();
}
void MidiDriver_ADLIB_Lure::metaEvent(int8 source, byte type, byte *data, uint16 length) {
if (type == MIDI_META_SEQUENCER && length >= 6 &&
data[0] == 0x00 && data[1] == 0x00 && data[2] == 0x3F && data[3] == 0x00) {
// Custom sequencer meta event
switch (data[4]) {
case 0x01:
// Instrument definition
uint8 channel;
channel = data[5];
assert(length == 0x22);
assert(source >= 0);
assert(channel < MIDI_CHANNEL_COUNT);
// Instrument definitions use the AdLib BNK format, but omit the
// first 2 fields.
AdLibBnkInstrumentDefinition bnkInstDef;
memset(&bnkInstDef, 0, sizeof(bnkInstDef));
memcpy((uint8*)&bnkInstDef + 2, &data[6], sizeof(AdLibBnkInstrumentDefinition) - 2);
// Store the definition in the _instrumentDefs array.
bnkInstDef.toOplInstrumentDefinition(_instrumentDefs[source][channel]);
break;
case 0x02:
// Rhythm mode
// data[5] == 0: off, >= 1: on.
// This is never turned on in the game's music data, so this is not
// implemented.
break;
case 0x03:
// Pitch bend sensitivity
_pitchBendSensitivity = data[5];
break;
default:
// Unknown sequencer meta event.
warning("MidiDriver_ADLIB_Lure::metaEvent - Unknown sequencer meta event type %X", data[4]);
break;
}
return;
}
// Use default handling for other meta events.
MidiDriver_ADLIB_Multisource::metaEvent(source, type, data, length);
}
MidiDriver_ADLIB_Lure::InstrumentInfo MidiDriver_ADLIB_Lure::determineInstrument(uint8 channel, uint8 source, uint8 note) {
InstrumentInfo instrument = { 0, nullptr, 0 };
// Lure does not use a rhythm channel.
instrument.oplNote = note;
// Get the instrument definition set by the last meta event.
instrument.instrumentDef = &_instrumentDefs[source][channel];
// Identify the instrument by source and channel.
instrument.instrumentId = (source << 4) | channel;
return instrument;
}
uint16 MidiDriver_ADLIB_Lure::calculateFrequency(uint8 channel, uint8 source, uint8 note) {
// Lower the note by an octave. Notes in the lowest octave get clipped to 0.
note -= (note >= 0xC ? 0xC : note);
// The pitch bend is a number of semitones (in bits 8+) and an 8 bit
// fraction of a semitone (only the most significant 4 bits are used).
int32 newPitchBend = calculatePitchBend(channel, source, 0);
// Discard the lower 4 bits of the pitch bend (the +8 is for rounding),
// add the MIDI note and clip the result to the range 0-5FF. Note that
// MIDI notes 60-7F get clipped to 5F.
uint16 noteValue = CLIP((note << 4) + ((newPitchBend + 8) >> 4), (int32)0, (int32)0x5FF);
// Convert the note value to octave note and octave (block).
uint8 octaveNote = (noteValue >> 4) % 12;
uint8 block = (noteValue >> 4) / 12;
// Add the note fraction to the octave note and look up the OPL frequency
// (F-num) value to use.
uint8 octaveNoteValue = (octaveNote << 4) | (noteValue & 0xF);
uint16 oplFrequency = OPL_FREQUENCY_LOOKUP[octaveNoteValue];
if (oplFrequency < 0xF000) {
// Lookup values which have 0 in the highest 6 bits need to be lowered
// one octave.
if (block > 0) {
block--;
} else {
// If the octave is already 0, bitshift the frequency to halve it.
oplFrequency >>= 1;
}
}
// Return the F-num and block in OPL register format.
return (oplFrequency & 0x3FF) | (block << 10);
}
int32 MidiDriver_ADLIB_Lure::calculatePitchBend(uint8 channel, uint8 source, uint16 oplFrequency) {
// Convert MIDI pitch bend value to a 14 bit signed value
// (range -0x2000 - 0x2000).
int16 newPitchBend = _controlData[source][channel].pitchBend - 0x2000;
// Discard the lower 5 bits to turn it into a 9 bit value (-0x100 - 0x100).
newPitchBend >>= 5;
// Double it for every sensitivity semitone over 1. Note that sensitivity
// is typically specified as 1, which will not change the value.
newPitchBend <<= _pitchBendSensitivity - 1;
return newPitchBend;
}
uint8 MidiDriver_ADLIB_Lure::calculateUnscaledVolume(uint8 channel, uint8 source, uint8 velocity, OplInstrumentDefinition &instrumentDef, uint8 operatorNum) {
uint8 operatorVolume = instrumentDef.getOperatorDefinition(operatorNum).level & OPL_MASK_LEVEL;
// Scale the instrument definition operator volume by velocity.
// Invert it, multiply by velocity, add 0x40 for rounding and divide by 7F.
uint8 invertedVolume = (((0x3F - operatorVolume) * velocity) + 0x40) >> 7;
// Invert the volume again before returning it.
return 0x3F - invertedVolume;
}
} // End of namespace Lure