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Diffstat (limited to 'engines/igor/midi.cpp')
| -rw-r--r-- | engines/igor/midi.cpp | 362 |
1 files changed, 0 insertions, 362 deletions
diff --git a/engines/igor/midi.cpp b/engines/igor/midi.cpp deleted file mode 100644 index f5e0d9ae74..0000000000 --- a/engines/igor/midi.cpp +++ /dev/null @@ -1,362 +0,0 @@ -/* 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. - * - * $URL$ - * $Id$ - * - */ - -#include "igor/igor.h" -#include "igor/midi.h" - -namespace Igor { - -MidiParser_CTMF::MidiParser_CTMF() - : _instrumentsCount(0) { - memset(_instruments, 0, sizeof(_instruments)); -} - -void MidiParser_CTMF::decodeHeader(const uint8 *p) { - _instrumentsDataOffset = READ_LE_UINT16(p); p += 2; - _midiDataOffset = READ_LE_UINT16(p); p += 2; - _ticksPerQuarter = READ_LE_UINT16(p); p += 2; - _ticksPerSecond = READ_LE_UINT16(p); p += 2; - p += 22; - _instrumentsCount = READ_LE_UINT16(p); p += 2; - _basicTempo = READ_LE_UINT16(p); p += 2; -} - -void MidiParser_CTMF::decodeAdlibInstrument(struct AdlibInstrument *ins, const uint8 *p) { - ins->chr[kAdlibCarrier] = p[0]; - ins->chr[kAdlibModulator] = p[1]; - ins->scale[kAdlibCarrier] = p[2]; - ins->scale[kAdlibModulator] = p[3]; - ins->attack[kAdlibCarrier] = p[4]; - ins->attack[kAdlibModulator] = p[5]; - ins->sustain[kAdlibCarrier] = p[6]; - ins->sustain[kAdlibModulator] = p[7]; - ins->waveSel[kAdlibCarrier] = p[8]; - ins->waveSel[kAdlibModulator] = p[9]; - ins->feedback = p[10]; -} - -bool MidiParser_CTMF::loadMusic(byte *data, uint32 size) { - if (memcmp(data, "CTMF", 4) == 0 && READ_LE_UINT16(data + 4) == 0x101) { - decodeHeader(data + 6); - assert(_instrumentsCount <= kMaxInstruments); - for (int i = 0; i < _instrumentsCount; ++i) { - decodeAdlibInstrument(&_instruments[i], data + _instrumentsDataOffset + i * 16); - } - // reset parser - _num_tracks = 1; - _tracks[0] = data + _midiDataOffset; - _ppqn = _ticksPerQuarter; - setTempo(500000); - setTrack(0); - return true; - } - return false; -} - -void MidiParser_CTMF::parseNextEvent(EventInfo &info) { - info.start = _position._play_pos; - info.delta = readVLQ(_position._play_pos); - - if ((_position._play_pos[0] & 0xF0) >= 0x80) { - info.event = *_position._play_pos++; - } else { - info.event = _position._running_status; - } - - if ((info.event & 0x80) == 0) { - return; - } - - _position._running_status = info.event; - switch (info.command()) { - case 0x8: // Note Off - case 0x9: // Note On - case 0xB: // Control Mode Change - info.basic.param1 = *_position._play_pos++; - info.basic.param2 = *_position._play_pos++; - if (info.command() == 0x9 && info.basic.param2 == 0) { - info.event = info.channel() | 0x80; // Note Off - } - return; - case 0xC: // Program Change - info.basic.param1 = *(_position._play_pos++); - info.basic.param2 = 0; - return; - case 0xF: - switch (info.event & 15) { - case 0xF: - info.ext.type = *(_position._play_pos++); - info.length = readVLQ(_position._play_pos); - info.ext.data = _position._play_pos; - _position._play_pos += info.length; - return; - } - } - warning("MidiParser_CTMF::parseNextEvent: Unhandled event code %x", info.event); -} - -int AdlibMidiDriver::open() { - MidiDriver_Emulated::open(); - _opl = makeAdlibOPL(getRate()); - memset(_adlibData, 0, sizeof(_adlibData)); - _adlibRhythmMode = false; - for (int i = 0; i < kAdlibChannelsCount; ++i) { - _adlibChannels[i].ch = -1; - _adlibChannels[i].lt = _adlibChannels[i].note = 0; - } - memset(_adlibInstrumentsMappingTable, 0, sizeof(_adlibInstrumentsMappingTable)); - adlibSetupCard(); - _mixer->playInputStream(Audio::Mixer::kMusicSoundType, &_mixerSoundHandle, this, -1, Audio::Mixer::kMaxChannelVolume, 0, false, true); - return 0; -} - -void AdlibMidiDriver::close() { - _mixer->stopHandle(_mixerSoundHandle); - OPLDestroy(_opl); -} - -void AdlibMidiDriver::send(uint32 b) { - int channel = b & 15; - int cmd = (b >> 4) & 7; - int param1 = (b >> 8) & 255; - int param2 = (b >> 16) & 255; - switch (cmd) { - case 0: - adlibTurnNoteOff(channel, param1); - break; - case 1: - adlibTurnNoteOn(channel, param1, param2); - break; - case 3: - adlibControlChange(channel, param1, param2); - break; - case 4: - adlibProgramChange(channel, param1); - break; - default: - warning("Unhandled cmd %d channel %d (0x%X)", cmd, channel, b); - break; - } -} - -void AdlibMidiDriver::generateSamples(int16 *data, int len) { - memset(data, 0, sizeof(int16) * len); - YM3812UpdateOne(_opl, data, len); -} - -void AdlibMidiDriver::adlibWrite(int port, int value) { - OPLWriteReg(_opl, port, value); - _adlibData[port & 255] = value & 255; -} - -void AdlibMidiDriver::adlibSetupCard() { - for (int i = 0; i < 256; ++i) { - adlibWrite(i, 0); - } - adlibWrite(1, 0x20); - adlibWrite(0xBD, 0xC0); -} - -void AdlibMidiDriver::adlibTurnNoteOff(int channel, int note) { - for (int i = 0; i < kAdlibChannelsCount; ++i) { - if (_adlibChannels[i].ch == channel && _adlibChannels[i].note == note) { - adlibEndNote(i); - _adlibChannels[i].ch = -1; - } - } -} - -void AdlibMidiDriver::adlibTurnNoteOn(int channel, int note, int velocity) { - assert(velocity != 0); - - for (int i = 0; i < kAdlibChannelsCount; ++i) { - if (_adlibChannels[i].ch != -1) { - ++_adlibChannels[i].lt; - } - } - - int ch = -1; - if (!_adlibRhythmMode || channel < 11) { - int maxLt = -1; - int maxCh = -1; - for (int i = 0; i < (_adlibRhythmMode ? 6 : 9); ++i) { - if (_adlibChannels[i].ch == -1) { - ch = i; - break; - } - if (_adlibChannels[i].lt > maxLt) { - maxLt = _adlibChannels[i].lt; - maxCh = i; - } - } - if (ch == -1) { - assert(maxCh != -1); - ch = maxCh; - adlibEndNote(ch); - } - } else { - ch = _adlibPercussionsMappingTable[channel - 11]; - } - - const AdlibInstrument &ins = _adlibInstruments[_adlibInstrumentsMappingTable[channel]]; - if (!_adlibRhythmMode || channel < 12) { - adlibSetupInstrument(ch, ins); - } else { - adlibSetupPercussion(channel, ins); - } - adlibSetupNote(ch, note - 13, velocity); - _adlibChannels[ch].ch = channel; - _adlibChannels[ch].note = note; - _adlibChannels[ch].lt = 0; -} - -void AdlibMidiDriver::adlibSetupInstrument(int channel, const AdlibInstrument &ins) { - adlibWrite(0x20 + _adlibOperatorsTable[channel], ins.chr[kAdlibCarrier]); - adlibWrite(0x23 + _adlibOperatorsTable[channel], ins.chr[kAdlibModulator]); - adlibWrite(0x40 + _adlibOperatorsTable[channel], ins.scale[kAdlibCarrier]); - if ((ins.feedback & 1) == 0) { - adlibWrite(0x43 + _adlibOperatorsTable[channel], ins.scale[kAdlibModulator]); - } else { - adlibWrite(0x43 + _adlibOperatorsTable[channel], 0); - } - adlibWrite(0x60 + _adlibOperatorsTable[channel], ins.attack[kAdlibCarrier]); - adlibWrite(0x63 + _adlibOperatorsTable[channel], ins.attack[kAdlibModulator]); - adlibWrite(0x80 + _adlibOperatorsTable[channel], ins.sustain[kAdlibCarrier]); - adlibWrite(0x83 + _adlibOperatorsTable[channel], ins.sustain[kAdlibModulator]); - adlibWrite(0xE0 + _adlibOperatorsTable[channel], ins.waveSel[kAdlibCarrier]); - adlibWrite(0xE3 + _adlibOperatorsTable[channel], ins.waveSel[kAdlibModulator]); - adlibWrite(0xC0 + channel, ins.feedback); -} - -void AdlibMidiDriver::adlibSetupPercussion(int channel, const AdlibInstrument &ins) { - channel = _adlibChannelsMappingTable[channel - 12]; - adlibWrite(0x20 + channel, ins.chr[kAdlibCarrier]); - adlibWrite(0x40 + channel, ins.scale[kAdlibCarrier]); - adlibWrite(0x60 + channel, ins.attack[kAdlibCarrier]); - adlibWrite(0x80 + channel, ins.sustain[kAdlibCarrier]); - adlibWrite(0xE0 + channel, ins.waveSel[kAdlibCarrier]); - adlibWrite(0xC0 + channel, ins.feedback); -} - -void AdlibMidiDriver::adlibSetupNote(int channel, int note, int velocity) { - adlibSetVolume(channel, velocity); - int f = _adlibNoteFreqTable[note % 12]; - adlibWrite(0xA0 + channel, f); - int oct = note / 12; - int c = ((f & 0x300) >> 8) + (oct << 2); - if (!_adlibRhythmMode || channel < 6) { - c |= 0x20; - } - adlibWrite(0xB0 + channel, c); -} - -void AdlibMidiDriver::adlibEndNote(int channel) { - adlibWrite(0xB0 + channel, _adlibData[0xB0 + channel] & ~0x20); -} - -void AdlibMidiDriver::adlibSetVolume(int channel, int volume) { - volume = 63 - (volume >> 1); - if ((_adlibData[0xC0 + channel] & 1) == 1) { - adlibWrite(0x40 + _adlibOperatorsTable[channel], volume | (_adlibData[0x40 + _adlibOperatorsTable[channel]] & 0xC0)); - } - adlibWrite(0x43 + _adlibOperatorsTable[channel], volume | (_adlibData[0x43 + _adlibOperatorsTable[channel]] & 0xC0)); -} - -void AdlibMidiDriver::adlibControlChange(int channel, int control, int param) { - switch (control) { - case 0x67: - _adlibRhythmMode = param != 0; - if (_adlibRhythmMode) { - adlibWrite(0xBD, _adlibData[0xBD] | 0x20); - } else { - adlibWrite(0xBD, _adlibData[0xBD] & ~0x20); - } - break; - case 0x7B: - adlibTurnNoteOff(channel, -1); - break; - default: - warning("Unhandled adlibControlChange 0x%X %d", control, param); - break; - } -} - -void AdlibMidiDriver::adlibProgramChange(int channel, int num) { - _adlibInstrumentsMappingTable[channel] = num; -} - -const uint8 AdlibMidiDriver::_adlibOperatorsTable[] = { 0, 1, 2, 8, 9, 10, 16, 17, 18 }; - -const uint8 AdlibMidiDriver::_adlibChannelsMappingTable[] = { 20, 18, 21, 17 }; - -const int16 AdlibMidiDriver::_adlibNoteFreqTable[] = { 363, 385, 408, 432, 458, 485, 514, 544, 577, 611, 647, 686 }; - -const uint8 AdlibMidiDriver::_adlibPercussionsMappingTable[] = { 6, 7, 8, 8, 7 }; - -MidiPlayer::MidiPlayer(IgorEngine *vm) : _isPlaying(false) { - _driver = new AdlibMidiDriver(vm->_mixer); - _driver->open(); - _parser = new MidiParser_CTMF; - _parser->setMidiDriver(_driver); - _parser->setTimerRate(_driver->getBaseTempo()); - _driver->setTimerCallback(this, &MidiPlayer::updateTimerCallback); -} - -MidiPlayer::~MidiPlayer() { - stopMusic(); - _driver->setTimerCallback(0, 0); - _driver->close(); - delete _parser; - delete _driver; -} - -void MidiPlayer::playMusic(uint8 *data, uint32 size) { - stopMusic(); - _mutex.lock(); - _isPlaying = true; - _parser->loadMusic(data, size); - _parser->setTrack(0); - _driver->setInstruments(&_parser->_instruments[0]); - _mutex.unlock(); -} - -void MidiPlayer::stopMusic() { - _mutex.lock(); - if (_isPlaying) { - _isPlaying = false; - _parser->unloadMusic(); - } - _mutex.unlock(); -} - -void MidiPlayer::updateTimer() { - _mutex.lock(); - if (_isPlaying) { - _parser->onTimer(); - } - _mutex.unlock(); -} - -} // namespace Igor |