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Diffstat (limited to 'engines/scumm/player_mac.cpp')
| -rw-r--r-- | engines/scumm/player_mac.cpp | 415 |
1 files changed, 415 insertions, 0 deletions
diff --git a/engines/scumm/player_mac.cpp b/engines/scumm/player_mac.cpp new file mode 100644 index 0000000000..c16c85bff3 --- /dev/null +++ b/engines/scumm/player_mac.cpp @@ -0,0 +1,415 @@ +/* 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<uint32>(_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 |