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/* 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.
*
*/
#include "common/macresman.h"
#include "common/translation.h"
#include "engines/engine.h"
#include "gui/message.h"
#include "scumm/player_mac.h"
#include "scumm/resource.h"
#include "scumm/scumm.h"
#include "scumm/imuse/imuse.h"
namespace Scumm {
Player_Mac::Player_Mac(ScummEngine *scumm, Audio::Mixer *mixer, int numberOfChannels, int channelMask, bool fadeNoteEnds)
: _vm(scumm),
_mixer(mixer),
_sampleRate(_mixer->getOutputRate()),
_soundPlaying(-1),
_numberOfChannels(numberOfChannels),
_channelMask(channelMask),
_fadeNoteEnds(fadeNoteEnds) {
assert(scumm);
assert(mixer);
}
void Player_Mac::init() {
_channel = new Player_Mac::Channel[_numberOfChannels];
int i;
for (i = 0; i < _numberOfChannels; i++) {
_channel[i]._looped = false;
_channel[i]._length = 0;
_channel[i]._data = NULL;
_channel[i]._pos = 0;
_channel[i]._pitchModifier = 0;
_channel[i]._velocity = 0;
_channel[i]._remaining = 0;
_channel[i]._notesLeft = false;
_channel[i]._instrument._data = NULL;
_channel[i]._instrument._size = 0;
_channel[i]._instrument._rate = 0;
_channel[i]._instrument._loopStart = 0;
_channel[i]._instrument._loopEnd = 0;
_channel[i]._instrument._baseFreq = 0;
_channel[i]._instrument._pos = 0;
_channel[i]._instrument._subPos = 0;
}
_pitchTable[116] = 1664510;
_pitchTable[117] = 1763487;
_pitchTable[118] = 1868350;
_pitchTable[119] = 1979447;
_pitchTable[120] = 2097152;
_pitchTable[121] = 2221855;
_pitchTable[122] = 2353973;
_pitchTable[123] = 2493948;
_pitchTable[124] = 2642246;
_pitchTable[125] = 2799362;
_pitchTable[126] = 2965820;
_pitchTable[127] = 3142177;
for (i = 115; i >= 0; --i) {
_pitchTable[i] = _pitchTable[i + 12] / 2;
}
setMusicVolume(255);
if (!checkMusicAvailable()) {
return;
}
_mixer->playStream(Audio::Mixer::kPlainSoundType, &_soundHandle, this, -1, Audio::Mixer::kMaxChannelVolume, 0, DisposeAfterUse::NO, true);
}
Player_Mac::~Player_Mac() {
Common::StackLock lock(_mutex);
_mixer->stopHandle(_soundHandle);
stopAllSounds_Internal();
delete[] _channel;
}
void Player_Mac::saveLoadWithSerializer(Serializer *ser) {
Common::StackLock lock(_mutex);
if (ser->getVersion() < VER(94)) {
if (_vm->_game.id == GID_MONKEY && ser->isLoading()) {
IMuse *dummyImuse = IMuse::create(_vm->_system, NULL, NULL);
dummyImuse->save_or_load(ser, _vm, false);
delete dummyImuse;
}
} else {
static const SaveLoadEntry musicEntries[] = {
MKLINE(Player_Mac, _sampleRate, sleUint32, VER(94)),
MKLINE(Player_Mac, _soundPlaying, sleInt16, VER(94)),
MKEND()
};
static const SaveLoadEntry channelEntries[] = {
MKLINE(Channel, _pos, sleUint16, VER(94)),
MKLINE(Channel, _pitchModifier, sleInt32, VER(94)),
MKLINE(Channel, _velocity, sleUint8, VER(94)),
MKLINE(Channel, _remaining, sleUint32, VER(94)),
MKLINE(Channel, _notesLeft, sleUint8, VER(94)),
MKEND()
};
static const SaveLoadEntry instrumentEntries[] = {
MKLINE(Instrument, _pos, sleUint32, VER(94)),
MKLINE(Instrument, _subPos, sleUint32, VER(94)),
MKEND()
};
uint32 mixerSampleRate = _sampleRate;
int i;
ser->saveLoadEntries(this, musicEntries);
if (ser->isLoading() && _soundPlaying != -1) {
const byte *ptr = _vm->getResourceAddress(rtSound, _soundPlaying);
assert(ptr);
loadMusic(ptr);
}
ser->saveLoadArrayOf(_channel, _numberOfChannels, sizeof(Channel), channelEntries);
for (i = 0; i < _numberOfChannels; i++) {
ser->saveLoadEntries(&_channel[i], instrumentEntries);
}
if (ser->isLoading()) {
// If necessary, adjust the channel data to fit the
// current sample rate.
if (_soundPlaying != -1 && _sampleRate != mixerSampleRate) {
double mult = (double)_sampleRate / (double)mixerSampleRate;
for (i = 0; i < _numberOfChannels; i++) {
_channel[i]._pitchModifier = (int)((double)_channel[i]._pitchModifier * mult);
_channel[i]._remaining = (int)((double)_channel[i]._remaining / mult);
}
}
_sampleRate = mixerSampleRate;
}
}
}
void Player_Mac::setMusicVolume(int vol) {
debug(5, "Player_Mac::setMusicVolume(%d)", vol);
}
void Player_Mac::stopAllSounds_Internal() {
if (_soundPlaying != -1) {
_vm->_res->unlock(rtSound, _soundPlaying);
}
_soundPlaying = -1;
for (int i = 0; i < _numberOfChannels; i++) {
// The channel data is managed by the resource manager, so
// don't delete that.
delete[] _channel[i]._instrument._data;
_channel[i]._instrument._data = NULL;
_channel[i]._remaining = 0;
_channel[i]._notesLeft = false;
}
}
void Player_Mac::stopAllSounds() {
Common::StackLock lock(_mutex);
debug(5, "Player_Mac::stopAllSounds()");
stopAllSounds_Internal();
}
void Player_Mac::stopSound(int nr) {
Common::StackLock lock(_mutex);
debug(5, "Player_Mac::stopSound(%d)", nr);
if (nr == _soundPlaying) {
stopAllSounds();
}
}
void Player_Mac::startSound(int nr) {
Common::StackLock lock(_mutex);
debug(5, "Player_Mac::startSound(%d)", nr);
stopAllSounds_Internal();
const byte *ptr = _vm->getResourceAddress(rtSound, nr);
assert(ptr);
if (!loadMusic(ptr)) {
return;
}
_vm->_res->lock(rtSound, nr);
_soundPlaying = nr;
}
bool Player_Mac::Channel::loadInstrument(Common::SeekableReadStream *stream) {
uint16 soundType = stream->readUint16BE();
if (soundType != 1) {
warning("Player_Mac::loadInstrument: Unsupported sound type %d", soundType);
return false;
}
uint16 typeCount = stream->readUint16BE();
if (typeCount != 1) {
warning("Player_Mac::loadInstrument: Unsupported data type count %d", typeCount);
return false;
}
uint16 dataType = stream->readUint16BE();
if (dataType != 5) {
warning("Player_Mac::loadInstrument: Unsupported data type %d", dataType);
return false;
}
stream->readUint32BE(); // initialization option
uint16 cmdCount = stream->readUint16BE();
if (cmdCount != 1) {
warning("Player_Mac::loadInstrument: Unsupported command count %d", cmdCount);
return false;
}
uint16 command = stream->readUint16BE();
if (command != 0x8050 && command != 0x8051) {
warning("Player_Mac::loadInstrument: Unsupported command 0x%04X", command);
return false;
}
stream->readUint16BE(); // 0
uint32 soundHeaderOffset = stream->readUint32BE();
stream->seek(soundHeaderOffset);
uint32 soundDataOffset = stream->readUint32BE();
uint32 size = stream->readUint32BE();
uint32 rate = stream->readUint32BE() >> 16;
uint32 loopStart = stream->readUint32BE();
uint32 loopEnd = stream->readUint32BE();
byte encoding = stream->readByte();
byte baseFreq = stream->readByte();
if (encoding != 0) {
warning("Player_Mac::loadInstrument: Unsupported encoding %d", encoding);
return false;
}
stream->skip(soundDataOffset);
byte *data = new byte[size];
stream->read(data, size);
_instrument._data = data;
_instrument._size = size;
_instrument._rate = rate;
_instrument._loopStart = loopStart;
_instrument._loopEnd = loopEnd;
_instrument._baseFreq = baseFreq;
return true;
}
int Player_Mac::getMusicTimer() {
return 0;
}
int Player_Mac::getSoundStatus(int nr) const {
return _soundPlaying == nr;
}
uint32 Player_Mac::durationToSamples(uint16 duration) {
// The correct formula should be:
//
// (duration * 473 * _sampleRate) / (4 * 480 * 480)
//
// But that's likely to cause integer overflow, so we do it in two
// steps and hope that the rounding error won't be noticeable.
//
// The original code is a bit unclear on if it should be 473 or 437,
// but since the comments indicated 473 I'm assuming 437 was a typo.
uint32 samples = (duration * _sampleRate) / (4 * 480);
samples = (samples * 473) / 480;
return samples;
}
int Player_Mac::noteToPitchModifier(byte note, Instrument *instrument) {
if (note > 0) {
const int pitchIdx = note + 60 - instrument->_baseFreq;
// I don't want to use floating-point arithmetics here, but I
// ran into overflow problems with the church music in Monkey
// Island. It's only once per note, so it should be ok.
double mult = (double)instrument->_rate / (double)_sampleRate;
return (int)(mult * _pitchTable[pitchIdx]);
} else {
return 0;
}
}
int Player_Mac::readBuffer(int16 *data, const int numSamples) {
Common::StackLock lock(_mutex);
memset(data, 0, numSamples * 2);
if (_soundPlaying == -1) {
return numSamples;
}
bool notesLeft = false;
for (int i = 0; i < _numberOfChannels; i++) {
if (!(_channelMask & (1 << i))) {
continue;
}
uint samplesLeft = numSamples;
int16 *ptr = data;
while (samplesLeft > 0) {
int generated;
if (_channel[i]._remaining == 0) {
uint32 samples;
int pitchModifier;
byte velocity;
if (getNextNote(i, samples, pitchModifier, velocity)) {
_channel[i]._remaining = samples;
_channel[i]._pitchModifier = pitchModifier;
_channel[i]._velocity = velocity;
} else {
_channel[i]._pitchModifier = 0;
_channel[i]._velocity = 0;
_channel[i]._remaining = samplesLeft;
}
}
generated = MIN(_channel[i]._remaining, samplesLeft);
if (_channel[i]._velocity != 0) {
_channel[i]._instrument.generateSamples(ptr, _channel[i]._pitchModifier, _channel[i]._velocity, generated, _channel[i]._remaining, _fadeNoteEnds);
}
ptr += generated;
samplesLeft -= generated;
_channel[i]._remaining -= generated;
}
if (_channel[i]._notesLeft) {
notesLeft = true;
}
}
if (!notesLeft) {
stopAllSounds_Internal();
}
return numSamples;
}
void Player_Mac::Instrument::generateSamples(int16 *data, int pitchModifier, int volume, int numSamples, int remainingSamplesOnNote, bool fadeNoteEnds) {
int samplesLeft = numSamples;
while (samplesLeft) {
_subPos += pitchModifier;
while (_subPos >= 0x10000) {
_subPos -= 0x10000;
_pos++;
if (_pos >= _loopEnd) {
_pos = _loopStart;
}
}
int newSample = (((int16)((_data[_pos] << 8) ^ 0x8000)) * volume) / 255;
if (fadeNoteEnds) {
// Fade out the last 100 samples on each note. Even at
// low output sample rates this is just a fraction of a
// second, but it gets rid of distracting "pops" at the
// end when the sample would otherwise go abruptly from
// something to nothing. This was particularly
// noticeable on the distaff notes in Loom.
//
// The reason it's conditional is that Monkey Island
// appears to have a "hold current note" command, and
// if we fade out the current note in that case we
// will actually introduce new "pops".
remainingSamplesOnNote--;
if (remainingSamplesOnNote < 100) {
newSample = (newSample * remainingSamplesOnNote) / 100;
}
}
int sample = *data + newSample;
if (sample > 32767) {
sample = 32767;
} else if (sample < -32768) {
sample = -32768;
}
*data++ = sample;
samplesLeft--;
}
}
} // End of namespace Scumm
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