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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<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