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Diffstat (limited to 'engines/gob/sound/adlib.cpp')
| -rw-r--r-- | engines/gob/sound/adlib.cpp | 1044 |
1 files changed, 447 insertions, 597 deletions
diff --git a/engines/gob/sound/adlib.cpp b/engines/gob/sound/adlib.cpp index f1ab2a2d79..d9fc362547 100644 --- a/engines/gob/sound/adlib.cpp +++ b/engines/gob/sound/adlib.cpp @@ -20,771 +20,621 @@ * */ -#include "common/debug.h" -#include "common/file.h" -#include "common/endian.h" +#include "common/util.h" #include "common/textconsole.h" +#include "common/debug.h" +#include "common/config-manager.h" + +#include "audio/fmopl.h" #include "gob/gob.h" #include "gob/sound/adlib.h" namespace Gob { -const unsigned char AdLib::_operators[] = {0, 1, 2, 8, 9, 10, 16, 17, 18}; -const unsigned char AdLib::_volRegNums[] = { - 3, 4, 5, - 11, 12, 13, - 19, 20, 21 +static const int kPitchTom = 24; +static const int kPitchTomToSnare = 7; +static const int kPitchSnareDrum = kPitchTom + kPitchTomToSnare; + + +// Is the operator a modulator (0) or a carrier (1)? +const uint8 AdLib::kOperatorType[kOperatorCount] = { + 0, 0, 0, 1, 1, 1, + 0, 0, 0, 1, 1, 1, + 0, 0, 0, 1, 1, 1 +}; + +// Operator number to register offset on the OPL +const uint8 AdLib::kOperatorOffset[kOperatorCount] = { + 0, 1, 2, 3, 4, 5, + 8, 9, 10, 11, 12, 13, + 16, 17, 18, 19, 20, 21 +}; + +// For each operator, the voice it belongs to +const uint8 AdLib::kOperatorVoice[kOperatorCount] = { + 0, 1, 2, + 0, 1, 2, + 3, 4, 5, + 3, 4, 5, + 6, 7, 8, + 6, 7, 8, +}; + +// Voice to operator set, for the 9 melodyvoices (only 6 useable in percussion mode) +const uint8 AdLib::kVoiceMelodyOperator[kOperatorsPerVoice][kMelodyVoiceCount] = { + {0, 1, 2, 6, 7, 8, 12, 13, 14}, + {3, 4, 5, 9, 10, 11, 15, 16, 17} }; -AdLib::AdLib(Audio::Mixer &mixer) : _mixer(&mixer) { - init(); +// Voice to operator set, for the 5 percussion voices (only useable in percussion mode) +const uint8 AdLib::kVoicePercussionOperator[kOperatorsPerVoice][kPercussionVoiceCount] = { + {12, 16, 14, 17, 13}, + {15, 0, 0, 0, 0} +}; + +// Mask bits to set each percussion instrument on/off +const byte AdLib::kPercussionMasks[kPercussionVoiceCount] = {0x10, 0x08, 0x04, 0x02, 0x01}; + +// Default instrument presets +const uint16 AdLib::kPianoParams [kOperatorsPerVoice][kParamCount] = { + { 1, 1, 3, 15, 5, 0, 1, 3, 15, 0, 0, 0, 1, 0}, + { 0, 1, 1, 15, 7, 0, 2, 4, 0, 0, 0, 1, 0, 0} }; +const uint16 AdLib::kBaseDrumParams[kOperatorsPerVoice][kParamCount] = { + { 0, 0, 0, 10, 4, 0, 8, 12, 11, 0, 0, 0, 1, 0 }, + { 0, 0, 0, 13, 4, 0, 6, 15, 0, 0, 0, 0, 1, 0 } }; +const uint16 AdLib::kSnareDrumParams[kParamCount] = { + 0, 12, 0, 15, 11, 0, 8, 5, 0, 0, 0, 0, 0, 0 }; +const uint16 AdLib::kTomParams [kParamCount] = { + 0, 4, 0, 15, 11, 0, 7, 5, 0, 0, 0, 0, 0, 0 }; +const uint16 AdLib::kCymbalParams [kParamCount] = { + 0, 1, 0, 15, 11, 0, 5, 5, 0, 0, 0, 0, 0, 0 }; +const uint16 AdLib::kHihatParams [kParamCount] = { + 0, 1, 0, 15, 11, 0, 7, 5, 0, 0, 0, 0, 0, 0 }; + + +AdLib::AdLib(Audio::Mixer &mixer) : _mixer(&mixer), _opl(0), + _toPoll(0), _repCount(0), _first(true), _playing(false), _ended(true) { + + _rate = _mixer->getOutputRate(); + + initFreqs(); + + createOPL(); + initOPL(); + + _mixer->playStream(Audio::Mixer::kMusicSoundType, &_handle, + this, -1, Audio::Mixer::kMaxChannelVolume, 0, DisposeAfterUse::NO, true); } AdLib::~AdLib() { - Common::StackLock slock(_mutex); - _mixer->stopHandle(_handle); - OPLDestroy(_opl); - if (_data && _freeData) - delete[] _data; -} -void AdLib::init() { - _index = -1; - _data = 0; - _playPos = 0; - _dataSize = 0; + delete _opl; +} - _rate = _mixer->getOutputRate(); +// Creates the OPL. Try to use the DOSBox emulator, unless that one is not compiled in, +// or the user explicitly wants the MAME emulator. The MAME one is slightly buggy, leading +// to some wrong sounds, especially noticeable in the title music of Gobliins 2, so we +// really don't want to use it, if we can help it. +void AdLib::createOPL() { + Common::String oplDriver = ConfMan.get("opl_driver"); - _opl = makeAdLibOPL(_rate); + if (oplDriver.empty() || (oplDriver == "auto") || (OPL::Config::parse(oplDriver) == -1)) { + // User has selected OPL driver auto detection or an invalid OPL driver. + // Set it to our preferred driver (DOSBox), if we can. - _first = true; - _ended = false; - _playing = false; + if (OPL::Config::parse("db") <= 0) { + warning("The DOSBox AdLib emulator is not compiled in. Please keep in mind that the MAME one is buggy"); + } else + oplDriver = "db"; - _freeData = false; + } else if (oplDriver == "mame") { + // User has selected the MAME OPL driver. It is buggy, so warn the user about that. - _repCount = -1; - _samplesTillPoll = 0; + warning("You have selected the MAME AdLib emulator. It is buggy; AdLib music might be slightly glitchy now"); + } - for (int i = 0; i < 16; i ++) - _pollNotes[i] = 0; - setFreqs(); + _opl = OPL::Config::create(OPL::Config::parse(oplDriver), OPL::Config::kOpl2); + if (!_opl || !_opl->init(_rate)) { + delete _opl; - _mixer->playStream(Audio::Mixer::kMusicSoundType, &_handle, - this, -1, Audio::Mixer::kMaxChannelVolume, 0, DisposeAfterUse::NO, true); + error("Could not create an AdLib emulator"); + } } int AdLib::readBuffer(int16 *buffer, const int numSamples) { Common::StackLock slock(_mutex); - int samples; - int render; - if (!_playing || (numSamples < 0)) { + // Nothing to do, fill with silence + if (!_playing) { memset(buffer, 0, numSamples * sizeof(int16)); return numSamples; } - if (_first) { - memset(buffer, 0, numSamples * sizeof(int16)); - pollMusic(); - return numSamples; - } - samples = numSamples; + // Read samples from the OPL, polling in more music when necessary + uint32 samples = numSamples; while (samples && _playing) { - if (_samplesTillPoll) { - render = (samples > _samplesTillPoll) ? (_samplesTillPoll) : (samples); + if (_toPoll) { + const uint32 render = MIN(samples, _toPoll); + + _opl->readBuffer(buffer, render); + + buffer += render; samples -= render; - _samplesTillPoll -= render; - YM3812UpdateOne(_opl, buffer, render); - buffer += render; + _toPoll -= render; + } else { - pollMusic(); + // Song ended, fill the rest with silence if (_ended) { memset(buffer, 0, samples * sizeof(int16)); samples = 0; + break; } + + // Poll more music + _toPoll = pollMusic(_first); + _first = false; } } + // Song ended, loop if requested if (_ended) { - _first = true; - _ended = false; + _toPoll = 0; - rewind(); + // _repCount == 0: No looping (anymore); _repCount < 0: Infinite looping + if (_repCount != 0) { + if (_repCount > 0) + _repCount--; + + _first = true; + _ended = false; - _samplesTillPoll = 0; - if (_repCount == -1) { - reset(); - setVoices(); - } else if (_repCount > 0) { - _repCount--; reset(); - setVoices(); - } - else + rewind(); + } else _playing = false; } - return numSamples; -} -void AdLib::writeOPL(byte reg, byte val) { - debugC(6, kDebugSound, "AdLib::writeOPL (%02X, %02X)", reg, val); - OPLWriteReg(_opl, reg, val); + return numSamples; } -void AdLib::setFreqs() { - byte lin; - byte col; - long val = 0; - - // Run through the 11 channels - for (lin = 0; lin < 11; lin ++) { - _notes[lin] = 0; - _notCol[lin] = 0; - _notLin[lin] = 0; - _notOn[lin] = false; - } - - // Run through the 25 lines - for (lin = 0; lin < 25; lin ++) { - // Run through the 12 columns - for (col = 0; col < 12; col ++) { - if (!col) - val = (((0x2710L + lin * 0x18) * 0xCB78 / 0x3D090) << 0xE) * - 9 / 0x1B503; - _freqs[lin][col] = (short)((val + 4) >> 3); - val = val * 0x6A / 0x64; - } - } +bool AdLib::isStereo() const { + return _opl->isStereo(); } -void AdLib::reset() { - _first = true; - OPLResetChip(_opl); - _samplesTillPoll = 0; - - setFreqs(); - // Set frequencies and octave to 0; notes off - for (int i = 0; i < 9; i++) { - writeOPL(0xA0 | i, 0); - writeOPL(0xB0 | i, 0); - writeOPL(0xE0 | _operators[i] , 0); - writeOPL(0xE0 |(_operators[i] + 3), 0); - } - - // Authorize the control of the waveformes - writeOPL(0x01, 0x20); -} - -void AdLib::setKey(byte voice, byte note, bool on, bool spec) { - short freq = 0; - short octa = 0; - - // Instruction AX - if (spec) { - // 0x7F donne 0x16B; - // 7F - // << 7 = 3F80 - // + E000 = 11F80 - // & FFFF = 1F80 - // * 19 = 31380 - // / 2000 = 18 => Ligne 18h, colonne 0 => freq 16B - - // 0x3A donne 0x2AF; - // 3A - // << 7 = 1D00 - // + E000 = FD00 negatif - // * 19 = xB500 - // / 2000 = -2 => Ligne 17h, colonne -1 - - // 2E - // << 7 = 1700 - // + E000 = F700 negatif - // * 19 = x1F00 - // / 2000 = - short a; - short lin; - short col; - - a = (note << 7) + 0xE000; // Volontairement tronque - a = (short)((long)a * 25 / 0x2000); - if (a < 0) { - col = - ((24 - a) / 25); - lin = (-a % 25); - if (lin) - lin = 25 - lin; - } - else { - col = a / 25; - lin = a % 25; - } - - _notCol[voice] = col; - _notLin[voice] = lin; - note = _notes[voice]; - } - // Instructions 0X 9X 8X - else { - note -= 12; - _notOn[voice] = on; - } - - _notes[voice] = note; - note += _notCol[voice]; - note = MIN((byte) 0x5F, note); - octa = note / 12; - freq = _freqs[_notLin[voice]][note - octa * 12]; - - writeOPL(0xA0 + voice, freq & 0xFF); - writeOPL(0xB0 + voice, (freq >> 8) | (octa << 2) | (0x20 * (on ? 1 : 0))); - - if (!freq) - warning("AdLib::setKey Voice %d, note %02X unknown", voice, note); +bool AdLib::endOfData() const { + return !_playing; } -void AdLib::setVolume(byte voice, byte volume) { - debugC(6, kDebugSound, "AdLib::setVolume(%d, %d)", voice, volume); - //assert(voice >= 0 && voice <= 9); - volume = 0x3F - ((volume * 0x7E) + 0x7F) / 0xFE; - writeOPL(0x40 + _volRegNums[voice], volume); +bool AdLib::endOfStream() const { + return false; } -void AdLib::pollMusic() { - if ((_playPos > (_data + _dataSize)) && (_dataSize != 0xFFFFFFFF)) { - _ended = true; - return; - } - - interpret(); -} - -void AdLib::unload() { - _playing = false; - _index = -1; - - if (_data && _freeData) - delete[] _data; - - _freeData = false; +int AdLib::getRate() const { + return _rate; } bool AdLib::isPlaying() const { return _playing; } -bool AdLib::getRepeating() const { - return _repCount != 0; +int32 AdLib::getRepeating() const { + Common::StackLock slock(_mutex); + + return _repCount; } void AdLib::setRepeating(int32 repCount) { + Common::StackLock slock(_mutex); + _repCount = repCount; } -int AdLib::getIndex() const { - return _index; +uint32 AdLib::getSamplesPerSecond() const { + return _rate * (isStereo() ? 2 : 1); } void AdLib::startPlay() { - if (_data) _playing = true; + Common::StackLock slock(_mutex); + + _playing = true; + _ended = false; + _first = true; + + reset(); + rewind(); } void AdLib::stopPlay() { Common::StackLock slock(_mutex); + + end(true); + _playing = false; } -ADLPlayer::ADLPlayer(Audio::Mixer &mixer) : AdLib(mixer) { -} +void AdLib::writeOPL(byte reg, byte val) { + debugC(6, kDebugSound, "AdLib::writeOPL (%02X, %02X)", reg, val); -ADLPlayer::~ADLPlayer() { + _opl->writeReg(reg, val); } -bool ADLPlayer::load(const char *fileName) { - Common::File song; +void AdLib::reset() { + allOff(); + initOPL(); +} - unload(); - song.open(fileName); - if (!song.isOpen()) - return false; +void AdLib::allOff() { + // NOTE: Explicit casts are necessary, because of 5.16 paragraph 4 of the C++ standard + int numVoices = isPercussionMode() ? (int)kMaxVoiceCount : (int)kMelodyVoiceCount; - _freeData = true; - _dataSize = song.size(); - _data = new byte[_dataSize]; - song.read(_data, _dataSize); - song.close(); + for (int i = 0; i < numVoices; i++) + noteOff(i); +} +void AdLib::end(bool killRepeat) { reset(); - setVoices(); - _playPos = _data + 3 + (_data[1] + 1) * 0x38; - return true; + _ended = true; + + if (killRepeat) + _repCount = 0; } -bool ADLPlayer::load(byte *data, uint32 size, int index) { - unload(); - _repCount = 0; +void AdLib::initOPL() { + _tremoloDepth = false; + _vibratoDepth = false; + _keySplit = false; - _dataSize = size; - _data = data; - _index = index; + _enableWaveSelect = true; - reset(); - setVoices(); - _playPos = _data + 3 + (_data[1] + 1) * 0x38; + for (int i = 0; i < kMaxVoiceCount; i++) { + _voiceNote[i] = 0; + _voiceOn [i] = 0; + } + + _opl->reset(); + + initOperatorVolumes(); + resetFreqs(); + + setPercussionMode(false); + + setTremoloDepth(false); + setVibratoDepth(false); + setKeySplit(false); + + for(int i = 0; i < kMelodyVoiceCount; i++) + voiceOff(i); - return true; + setPitchRange(1); + + enableWaveSelect(true); } -void ADLPlayer::unload() { - AdLib::unload(); +bool AdLib::isPercussionMode() const { + return _percussionMode; } -void ADLPlayer::interpret() { - unsigned char instr; - byte channel; - byte note; - byte volume; - uint16 tempo; +void AdLib::setPercussionMode(bool percussion) { + if (percussion) { + voiceOff(kVoiceBaseDrum); + voiceOff(kVoiceSnareDrum); + voiceOff(kVoiceTom); - // First tempo, we'll ignore it... - if (_first) { - tempo = *(_playPos++); - // Tempo on 2 bytes - if (tempo & 0x80) - tempo = ((tempo & 3) << 8) | *(_playPos++); - } - _first = false; - - // Instruction - instr = *(_playPos++); - channel = instr & 0x0F; - - switch (instr & 0xF0) { - // Note on + Volume - case 0x00: - note = *(_playPos++); - _pollNotes[channel] = note; - setVolume(channel, *(_playPos++)); - setKey(channel, note, true, false); - break; - // Note on - case 0x90: - note = *(_playPos++); - _pollNotes[channel] = note; - setKey(channel, note, true, false); - break; - // Last note off - case 0x80: - note = _pollNotes[channel]; - setKey(channel, note, false, false); - break; - // Frequency on/off - case 0xA0: - note = *(_playPos++); - setKey(channel, note, _notOn[channel], true); - break; - // Volume - case 0xB0: - volume = *(_playPos++); - setVolume(channel, volume); - break; - // Program change - case 0xC0: - setVoice(channel, *(_playPos++), false); - break; - // Special - case 0xF0: - switch (instr & 0x0F) { - case 0xF: // End instruction - _ended = true; - _samplesTillPoll = 0; - return; - default: - warning("ADLPlayer: Unknown special command %X, stopping playback", - instr & 0x0F); - _repCount = 0; - _ended = true; - break; - } - break; - default: - warning("ADLPlayer: Unknown command %X, stopping playback", - instr & 0xF0); - _repCount = 0; - _ended = true; - break; + /* set the frequency for the last 4 percussion voices: */ + setFreq(kVoiceTom, kPitchTom, 0); + setFreq(kVoiceSnareDrum, kPitchSnareDrum, 0); } - // Temporization - tempo = *(_playPos++); - // End tempo - if (tempo == 0xFF) { - _ended = true; - return; - } - // Tempo on 2 bytes - if (tempo & 0x80) - tempo = ((tempo & 3) << 8) | *(_playPos++); - if (!tempo) - tempo ++; + _percussionMode = percussion; + _percussionBits = 0; - _samplesTillPoll = tempo * (_rate / 1000); + initOperatorParams(); + writeTremoloVibratoDepthPercMode(); } -void ADLPlayer::reset() { - AdLib::reset(); +void AdLib::enableWaveSelect(bool enable) { + _enableWaveSelect = enable; + + for (int i = 0; i < kOperatorCount; i++) + writeOPL(0xE0 + kOperatorOffset[i], 0); + + writeOPL(0x011, _enableWaveSelect ? 0x20 : 0); } -void ADLPlayer::rewind() { - _playPos = _data + 3 + (_data[1] + 1) * 0x38; +void AdLib::setPitchRange(uint8 range) { + _pitchRange = CLIP<uint8>(range, 0, 12); + _pitchRangeStep = _pitchRange * kPitchStepCount; } -void ADLPlayer::setVoices() { - // Definitions of the 9 instruments - for (int i = 0; i < 9; i++) - setVoice(i, i, true); +void AdLib::setTremoloDepth(bool tremoloDepth) { + _tremoloDepth = tremoloDepth; + + writeTremoloVibratoDepthPercMode(); } -void ADLPlayer::setVoice(byte voice, byte instr, bool set) { - uint16 strct[27]; - byte channel; - byte *dataPtr; +void AdLib::setVibratoDepth(bool vibratoDepth) { + _vibratoDepth = vibratoDepth; - // i = 0 : 0 1 2 3 4 5 6 7 8 9 10 11 12 26 - // i = 1 : 13 14 15 16 17 18 19 20 21 22 23 24 25 27 - for (int i = 0; i < 2; i++) { - dataPtr = _data + 3 + instr * 0x38 + i * 0x1A; - for (int j = 0; j < 27; j++) { - strct[j] = READ_LE_UINT16(dataPtr); - dataPtr += 2; - } - channel = _operators[voice] + i * 3; - writeOPL(0xBD, 0x00); - writeOPL(0x08, 0x00); - writeOPL(0x40 | channel, ((strct[0] & 3) << 6) | (strct[8] & 0x3F)); - if (!i) - writeOPL(0xC0 | voice, - ((strct[2] & 7) << 1) | (1 - (strct[12] & 1))); - writeOPL(0x60 | channel, ((strct[3] & 0xF) << 4) | (strct[6] & 0xF)); - writeOPL(0x80 | channel, ((strct[4] & 0xF) << 4) | (strct[7] & 0xF)); - writeOPL(0x20 | channel, ((strct[9] & 1) << 7) | - ((strct[10] & 1) << 6) | ((strct[5] & 1) << 5) | - ((strct[11] & 1) << 4) | (strct[1] & 0xF)); - if (!i) - writeOPL(0xE0 | channel, (strct[26] & 3)); - else - writeOPL(0xE0 | channel, (strct[14] & 3)); - if (i && set) - writeOPL(0x40 | channel, 0); + writeTremoloVibratoDepthPercMode(); +} + +void AdLib::setKeySplit(bool keySplit) { + _keySplit = keySplit; + + writeKeySplit(); +} + +void AdLib::setVoiceTimbre(uint8 voice, const uint16 *params) { + const uint16 *params0 = params; + const uint16 *params1 = params + kParamCount - 1; + const uint16 *waves = params + 2 * (kParamCount - 1); + + const int voicePerc = voice - kVoiceBaseDrum; + + if (!isPercussionMode() || (voice < kVoiceBaseDrum)) { + setOperatorParams(kVoiceMelodyOperator[0][voice], params0, waves[0]); + setOperatorParams(kVoiceMelodyOperator[1][voice], params1, waves[1]); + } else if (voice == kVoiceBaseDrum) { + setOperatorParams(kVoicePercussionOperator[0][voicePerc], params0, waves[0]); + setOperatorParams(kVoicePercussionOperator[1][voicePerc], params1, waves[1]); + } else { + setOperatorParams(kVoicePercussionOperator[0][voicePerc], params0, waves[0]); } } +void AdLib::setVoiceVolume(uint8 voice, uint8 volume) { + int oper; + + const int voicePerc = voice - kVoiceBaseDrum; -MDYPlayer::MDYPlayer(Audio::Mixer &mixer) : AdLib(mixer) { - init(); + if (!isPercussionMode() || (voice < kVoiceBaseDrum)) + oper = kVoiceMelodyOperator[1][ voice]; + else + oper = kVoicePercussionOperator[voice == kVoiceBaseDrum ? 1 : 0][voicePerc]; + + _operatorVolume[oper] = MIN<uint8>(volume, kMaxVolume); + writeKeyScaleLevelVolume(oper); } -MDYPlayer::~MDYPlayer() { +void AdLib::bendVoicePitch(uint8 voice, uint16 pitchBend) { + if (isPercussionMode() && (voice > kVoiceBaseDrum)) + return; + + changePitch(voice, MIN<uint16>(pitchBend, kMaxPitch)); + setFreq(voice, _voiceNote[voice], _voiceOn[voice]); } -void MDYPlayer::init() { - _soundMode = 0; +void AdLib::noteOn(uint8 voice, uint8 note) { + note = MAX<int>(0, note - (kStandardMidC - kOPLMidC)); + + if (isPercussionMode() && (voice >= kVoiceBaseDrum)) { + + if (voice == kVoiceBaseDrum) { + setFreq(kVoiceBaseDrum , note , false); + } else if (voice == kVoiceTom) { + setFreq(kVoiceTom , note , false); + setFreq(kVoiceSnareDrum, note + kPitchTomToSnare, false); + } + + _percussionBits |= kPercussionMasks[voice - kVoiceBaseDrum]; + writeTremoloVibratoDepthPercMode(); - _timbres = 0; - _tbrCount = 0; - _tbrStart = 0; - _timbresSize = 0; + } else + setFreq(voice, note, true); } -bool MDYPlayer::loadMDY(Common::SeekableReadStream &stream) { - unloadMDY(); +void AdLib::noteOff(uint8 voice) { + if (isPercussionMode() && (voice >= kVoiceBaseDrum)) { + _percussionBits &= ~kPercussionMasks[voice - kVoiceBaseDrum]; + writeTremoloVibratoDepthPercMode(); + } else + setFreq(voice, _voiceNote[voice], false); +} - _freeData = true; +void AdLib::writeKeyScaleLevelVolume(uint8 oper) { + uint16 volume = 0; - byte mdyHeader[70]; - stream.read(mdyHeader, 70); + volume = (63 - (_operatorParams[oper][kParamLevel] & 0x3F)) * _operatorVolume[oper]; + volume = 63 - ((2 * volume + kMaxVolume) / (2 * kMaxVolume)); - _tickBeat = mdyHeader[36]; - _beatMeasure = mdyHeader[37]; - _totalTick = mdyHeader[38] + (mdyHeader[39] << 8) + (mdyHeader[40] << 16) + (mdyHeader[41] << 24); - _dataSize = mdyHeader[42] + (mdyHeader[43] << 8) + (mdyHeader[44] << 16) + (mdyHeader[45] << 24); - _nrCommand = mdyHeader[46] + (mdyHeader[47] << 8) + (mdyHeader[48] << 16) + (mdyHeader[49] << 24); -// _soundMode is either 0 (melodic) or 1 (percussive) - _soundMode = mdyHeader[58]; - assert((_soundMode == 0) || (_soundMode == 1)); + uint8 keyScale = _operatorParams[oper][kParamKeyScaleLevel] << 6; - _pitchBendRangeStep = 25*mdyHeader[59]; - _basicTempo = mdyHeader[60] + (mdyHeader[61] << 8); + writeOPL(0x40 + kOperatorOffset[oper], volume | keyScale); +} - if (_pitchBendRangeStep < 25) - _pitchBendRangeStep = 25; - else if (_pitchBendRangeStep > 300) - _pitchBendRangeStep = 300; +void AdLib::writeKeySplit() { + writeOPL(0x08, _keySplit ? 0x40 : 0); +} - _data = new byte[_dataSize]; - stream.read(_data, _dataSize); +void AdLib::writeFeedbackFM(uint8 oper) { + if (kOperatorType[oper] == 1) + return; - reset(); - _playPos = _data; + uint8 value = 0; - return true; + value |= _operatorParams[oper][kParamFeedback] << 1; + value |= _operatorParams[oper][kParamFM] ? 0 : 1; + + writeOPL(0xC0 + kOperatorVoice[oper], value); } -bool MDYPlayer::loadMDY(const char *fileName) { - Common::File song; +void AdLib::writeAttackDecay(uint8 oper) { + uint8 value = 0; + + value |= _operatorParams[oper][kParamAttack] << 4; + value |= _operatorParams[oper][kParamDecay] & 0x0F; - song.open(fileName); - if (!song.isOpen()) - return false; + writeOPL(0x60 + kOperatorOffset[oper], value); +} - bool loaded = loadMDY(song); +void AdLib::writeSustainRelease(uint8 oper) { + uint8 value = 0; - song.close(); + value |= _operatorParams[oper][kParamSustain] << 4; + value |= _operatorParams[oper][kParamRelease] & 0x0F; - return loaded; + writeOPL(0x80 + kOperatorOffset[oper], value); } -bool MDYPlayer::loadTBR(Common::SeekableReadStream &stream) { - unloadTBR(); +void AdLib::writeTremoloVibratoSustainingKeyScaleRateFreqMulti(uint8 oper) { + uint8 value = 0; - _timbresSize = stream.size(); + value |= _operatorParams[oper][kParamAM] ? 0x80 : 0; + value |= _operatorParams[oper][kParamVib] ? 0x40 : 0; + value |= _operatorParams[oper][kParamSustaining] ? 0x20 : 0; + value |= _operatorParams[oper][kParamKeyScaleRate] ? 0x10 : 0; + value |= _operatorParams[oper][kParamFreqMulti] & 0x0F; - _timbres = new byte[_timbresSize]; - stream.read(_timbres, _timbresSize); + writeOPL(0x20 + kOperatorOffset[oper], value); +} - reset(); - setVoices(); +void AdLib::writeTremoloVibratoDepthPercMode() { + uint8 value = 0; + + value |= _tremoloDepth ? 0x80 : 0; + value |= _vibratoDepth ? 0x40 : 0; + value |= isPercussionMode() ? 0x20 : 0; + value |= _percussionBits; - return true; + writeOPL(0xBD, value); } -bool MDYPlayer::loadTBR(const char *fileName) { - Common::File timbres; +void AdLib::writeWaveSelect(uint8 oper) { + uint8 wave = 0; + if (_enableWaveSelect) + wave = _operatorParams[oper][kParamWaveSelect] & 0x03; - timbres.open(fileName); - if (!timbres.isOpen()) - return false; + writeOPL(0xE0 + kOperatorOffset[ oper], wave); +} - bool loaded = loadTBR(timbres); +void AdLib::writeAllParams(uint8 oper) { + writeTremoloVibratoDepthPercMode(); + writeKeySplit(); + writeKeyScaleLevelVolume(oper); + writeFeedbackFM(oper); + writeAttackDecay(oper); + writeSustainRelease(oper); + writeTremoloVibratoSustainingKeyScaleRateFreqMulti(oper); + writeWaveSelect(oper); +} - timbres.close(); +void AdLib::initOperatorParams() { + for (int i = 0; i < kOperatorCount; i++) + setOperatorParams(i, kPianoParams[kOperatorType[i]], kPianoParams[kOperatorType[i]][kParamCount - 1]); - return loaded; + if (isPercussionMode()) { + setOperatorParams(12, kBaseDrumParams [0], kBaseDrumParams [0][kParamCount - 1]); + setOperatorParams(15, kBaseDrumParams [1], kBaseDrumParams [1][kParamCount - 1]); + setOperatorParams(16, kSnareDrumParams , kSnareDrumParams [kParamCount - 1]); + setOperatorParams(14, kTomParams , kTomParams [kParamCount - 1]); + setOperatorParams(17, kCymbalParams , kCymbalParams [kParamCount - 1]); + setOperatorParams(13, kHihatParams , kHihatParams [kParamCount - 1]); + } } -void MDYPlayer::unload() { - unloadTBR(); - unloadMDY(); +void AdLib::initOperatorVolumes() { + for(int i = 0; i < kOperatorCount; i++) + _operatorVolume[i] = kMaxVolume; } -void MDYPlayer::unloadMDY() { - AdLib::unload(); +void AdLib::setOperatorParams(uint8 oper, const uint16 *params, uint8 wave) { + byte *operParams = _operatorParams[oper]; + + for (int i = 0; i < (kParamCount - 1); i++) + operParams[i] = params[i]; + + operParams[kParamCount - 1] = wave & 0x03; + + writeAllParams(oper); +} + +void AdLib::voiceOff(uint8 voice) { + writeOPL(0xA0 + voice, 0); + writeOPL(0xB0 + voice, 0); } -void MDYPlayer::unloadTBR() { - delete[] _timbres; +int32 AdLib::calcFreq(int32 deltaDemiToneNum, int32 deltaDemiToneDenom) { + int32 freq = 0; - _timbres = 0; - _timbresSize = 0; + freq = ((deltaDemiToneDenom * 100) + 6 * deltaDemiToneNum) * 52088; + freq /= deltaDemiToneDenom * 2500; + + return (freq * 147456) / 111875; } -void MDYPlayer::interpret() { - unsigned char instr; - byte channel; - byte note; - byte volume; - uint8 tempoMult, tempoFrac; - uint8 ctrlByte1, ctrlByte2; - uint8 timbre; +void AdLib::setFreqs(uint16 *freqs, int32 num, int32 denom) { + int32 val = calcFreq(num, denom); -// TODO : Verify the loop for percussive mode (11 ?) - if (_first) { - for (int i = 0; i < 9; i ++) - setVolume(i, 0); + *freqs++ = (4 + val) >> 3; -// TODO : Set pitch range + for (int i = 1; i < kHalfToneCount; i++) { + val = (val * 106) / 100; - _tempo = _basicTempo; - _wait = *(_playPos++); - _first = false; + *freqs++ = (4 + val) >> 3; } - do { - instr = *_playPos; - debugC(6, kDebugSound, "MDYPlayer::interpret instr 0x%X", instr); - switch (instr) { - case 0xF8: - _wait = *(_playPos++); - break; - case 0xFC: - _ended = true; - _samplesTillPoll = 0; - return; - case 0xF0: - _playPos++; - ctrlByte1 = *(_playPos++); - ctrlByte2 = *(_playPos++); - debugC(6, kDebugSound, "MDYPlayer::interpret ctrlBytes 0x%X 0x%X", ctrlByte1, ctrlByte2); - if (ctrlByte1 != 0x7F || ctrlByte2 != 0) { - _playPos -= 2; - while (*(_playPos++) != 0xF7) - ; - } else { - tempoMult = *(_playPos++); - tempoFrac = *(_playPos++); - _tempo = _basicTempo * tempoMult + (unsigned)(((long)_basicTempo * tempoFrac) >> 7); - _playPos++; - } - _wait = *(_playPos++); - break; - default: - if (instr >= 0x80) { - _playPos++; - } - channel = (int)(instr & 0x0f); - - switch (instr & 0xf0) { - case 0x90: - note = *(_playPos++); - volume = *(_playPos++); - _pollNotes[channel] = note; - setVolume(channel, volume); - setKey(channel, note, true, false); - break; - case 0x80: - _playPos += 2; - note = _pollNotes[channel]; - setKey(channel, note, false, false); - break; - case 0xA0: - setVolume(channel, *(_playPos++)); - break; - case 0xC0: - timbre = *(_playPos++); - setVoice(channel, timbre, false); - break; - case 0xE0: - warning("MDYPlayer: Pitch bend not yet implemented"); +} - note = *(_playPos)++; - note += (unsigned)(*(_playPos++)) << 7; +void AdLib::initFreqs() { + const int numStep = 100 / kPitchStepCount; - setKey(channel, note, _notOn[channel], true); + for (int i = 0; i < kPitchStepCount; i++) + setFreqs(_freqs[i], i * numStep, 100); - break; - case 0xB0: - _playPos += 2; - break; - case 0xD0: - _playPos++; - break; - default: - warning("MDYPlayer: Bad MIDI instr byte: 0%X", instr); - while ((*_playPos) < 0x80) - _playPos++; - if (*_playPos != 0xF8) - _playPos--; - break; - } //switch instr & 0xF0 - _wait = *(_playPos++); - break; - } //switch instr - } while (_wait == 0); - - if (_wait == 0xF8) { - _wait = 0xF0; - if (*_playPos != 0xF8) - _wait += *(_playPos++) & 0x0F; + resetFreqs(); +} + +void AdLib::resetFreqs() { + for (int i = 0; i < kMaxVoiceCount; i++) { + _freqPtr [i] = _freqs[0]; + _halfToneOffset[i] = 0; } -// _playPos++; - _samplesTillPoll = _wait * (_rate / 1000); } -void MDYPlayer::reset() { - AdLib::reset(); +void AdLib::changePitch(uint8 voice, uint16 pitchBend) { + + int full = 0; + int frac = 0; + int amount = ((pitchBend - kMidPitch) * _pitchRangeStep) / kMidPitch; + + if (amount >= 0) { + // Bend up + + full = amount / kPitchStepCount; + frac = amount % kPitchStepCount; -// _soundMode 1 : Percussive mode. - if (_soundMode == 1) { - writeOPL(0xA6, 0); - writeOPL(0xB6, 0); - writeOPL(0xA7, 0); - writeOPL(0xB7, 0); - writeOPL(0xA8, 0); - writeOPL(0xB8, 0); + } else { + // Bend down + + amount = kPitchStepCount - 1 - amount; + + full = -(amount / kPitchStepCount); + frac = (amount - kPitchStepCount + 1) % kPitchStepCount; + if (frac) + frac = kPitchStepCount - frac; -// TODO set the correct frequency for the last 4 percussive voices } + + _halfToneOffset[voice] = full; + _freqPtr [voice] = _freqs[frac]; } -void MDYPlayer::rewind() { - _playPos = _data; -} - -void MDYPlayer::setVoices() { - byte *timbrePtr; - - timbrePtr = _timbres; - debugC(6, kDebugSound, "MDYPlayer::setVoices TBR version: %X.%X", timbrePtr[0], timbrePtr[1]); - timbrePtr += 2; - - _tbrCount = READ_LE_UINT16(timbrePtr); - debugC(6, kDebugSound, "MDYPlayer::setVoices Timbres counter: %d", _tbrCount); - timbrePtr += 2; - _tbrStart = READ_LE_UINT16(timbrePtr); - - timbrePtr += 2; - for (int i = 0; i < _tbrCount; i++) - setVoice(i, i, true); -} - -void MDYPlayer::setVoice(byte voice, byte instr, bool set) { -// uint16 strct[27]; - uint8 strct[27]; - byte channel; - byte *timbrePtr; - char timbreName[10]; - - timbreName[9] = '\0'; - for (int j = 0; j < 9; j++) - timbreName[j] = _timbres[6 + j + (instr * 9)]; - debugC(6, kDebugSound, "MDYPlayer::setVoice Loading timbre %s", timbreName); - - // i = 0 : 0 1 2 3 4 5 6 7 8 9 10 11 12 26 - // i = 1 : 13 14 15 16 17 18 19 20 21 22 23 24 25 27 - for (int i = 0; i < 2; i++) { - timbrePtr = _timbres + _tbrStart + instr * 0x38 + i * 0x1A; - for (int j = 0; j < 27; j++) { - if (timbrePtr >= (_timbres + _timbresSize)) { - warning("MDYPlayer: Instrument %d out of range (%d, %d)", instr, - (uint32) (timbrePtr - _timbres), _timbresSize); - strct[j] = 0; - } else - //strct[j] = READ_LE_UINT16(timbrePtr); - strct[j] = timbrePtr[0]; - //timbrePtr += 2; - timbrePtr++; - } - channel = _operators[voice] + i * 3; - writeOPL(0xBD, 0x00); - writeOPL(0x08, 0x00); - writeOPL(0x40 | channel, ((strct[0] & 3) << 6) | (strct[8] & 0x3F)); - if (!i) - writeOPL(0xC0 | voice, - ((strct[2] & 7) << 1) | (1 - (strct[12] & 1))); - writeOPL(0x60 | channel, ((strct[3] & 0xF) << 4) | (strct[6] & 0xF)); - writeOPL(0x80 | channel, ((strct[4] & 0xF) << 4) | (strct[7] & 0xF)); - writeOPL(0x20 | channel, ((strct[9] & 1) << 7) | - ((strct[10] & 1) << 6) | ((strct[5] & 1) << 5) | - ((strct[11] & 1) << 4) | (strct[1] & 0xF)); - if (!i) - writeOPL(0xE0 | channel, (strct[26] & 3)); - else { - writeOPL(0xE0 | channel, (strct[14] & 3)); - writeOPL(0x40 | channel, 0); - } - } +void AdLib::setFreq(uint8 voice, uint16 note, bool on) { + _voiceOn [voice] = on; + _voiceNote[voice] = note; + + note = CLIP<int>(note + _halfToneOffset[voice], 0, kNoteCount - 1); + + uint16 freq = _freqPtr[voice][note % kHalfToneCount]; + + uint8 value = 0; + value |= on ? 0x20 : 0; + value |= ((note / kHalfToneCount) << 2) | ((freq >> 8) & 0x03); + + writeOPL(0xA0 + voice, freq); + writeOPL(0xB0 + voice, value); } } // End of namespace Gob |