// // mididevice.cpp // // MiniDexed - Dexed FM synthesizer for bare metal Raspberry Pi // Copyright (C) 2022 The MiniDexed Team // // Original author of this class: // R. Stange // // 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 3 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, see . // #include #include "mididevice.h" #include "minidexed.h" #include "config.h" #include #include #include "userinterface.h" LOGMODULE ("mididevice"); #define MIDI_NOTE_OFF 0b1000 #define MIDI_NOTE_ON 0b1001 #define MIDI_AFTERTOUCH 0b1010 // TODO #define MIDI_CHANNEL_AFTERTOUCH 0b1101 // right now Synth_Dexed just manage Channel Aftertouch not Polyphonic AT -> 0b1010 #define MIDI_CONTROL_CHANGE 0b1011 #define MIDI_CC_BANK_SELECT_MSB 0 #define MIDI_CC_MODULATION 1 #define MIDI_CC_BREATH_CONTROLLER 2 #define MIDI_CC_FOOT_PEDAL 4 #define MIDI_CC_VOLUME 7 #define MIDI_CC_PAN_POSITION 10 #define MIDI_CC_BANK_SELECT_LSB 32 #define MIDI_CC_BANK_SUSTAIN 64 #define MIDI_CC_RESONANCE 71 #define MIDI_CC_FREQUENCY_CUTOFF 74 #define MIDI_CC_REVERB_LEVEL 91 #define MIDI_CC_DETUNE_LEVEL 94 #define MIDI_CC_ALL_SOUND_OFF 120 #define MIDI_CC_ALL_NOTES_OFF 123 #define MIDI_PROGRAM_CHANGE 0b1100 #define MIDI_PITCH_BEND 0b1110 // MIDI "System" level (i.e. all TG) custom CC maps // Note: Even if number of TGs is not 8, there are only 8 // available to be used in the mappings here. #define NUM_MIDI_CC_MAPS 8 const unsigned MIDISystemCCMap[NUM_MIDI_CC_MAPS][8] = { {0,0,0,0,0,0,0,0}, // 0 = disabled {16,17,18,19,80,81,82,83}, // 1 = General Purpose Controllers 1-8 {20,21,22,23,24,25,26,27}, {52,53,54,55,56,57,58,59}, {102,103,104,105,106,107,108,109}, {110,111,112,113,114,115,116,117}, {3,9,14,15,28,29,30,31}, {35,41,46,47,60,61,62,63} }; #define MIDI_SYSTEM_EXCLUSIVE_BEGIN 0xF0 #define MIDI_SYSTEM_EXCLUSIVE_END 0xF7 #define MIDI_TIMING_CLOCK 0xF8 #define MIDI_ACTIVE_SENSING 0xFE CMIDIDevice::TDeviceMap CMIDIDevice::s_DeviceMap; CMIDIDevice::CMIDIDevice (CMiniDexed *pSynthesizer, CConfig *pConfig, CUserInterface *pUI) : m_pSynthesizer (pSynthesizer), m_pConfig (pConfig), m_pUI (pUI) { for (unsigned nTG = 0; nTG < CConfig::AllToneGenerators; nTG++) { m_ChannelMap[nTG] = Disabled; } m_nMIDISystemCCVol = m_pConfig->GetMIDISystemCCVol(); m_nMIDISystemCCPan = m_pConfig->GetMIDISystemCCPan(); m_nMIDISystemCCDetune = m_pConfig->GetMIDISystemCCDetune(); m_MIDISystemCCBitmap[0] = 0; m_MIDISystemCCBitmap[1] = 0; m_MIDISystemCCBitmap[2] = 0; m_MIDISystemCCBitmap[3] = 0; for (int tg=0; tg<8; tg++) { if (m_nMIDISystemCCVol != 0) { u8 cc = MIDISystemCCMap[m_nMIDISystemCCVol][tg]; m_MIDISystemCCBitmap[cc>>5] |= (1<<(cc%32)); } if (m_nMIDISystemCCPan != 0) { u8 cc = MIDISystemCCMap[m_nMIDISystemCCPan][tg]; m_MIDISystemCCBitmap[cc>>5] |= (1<<(cc%32)); } if (m_nMIDISystemCCDetune != 0) { u8 cc = MIDISystemCCMap[m_nMIDISystemCCDetune][tg]; m_MIDISystemCCBitmap[cc>>5] |= (1<<(cc%32)); } } if (m_pConfig->GetMIDIDumpEnabled ()) { LOGNOTE("MIDI System CC Map: %08X %08X %08X %08X", m_MIDISystemCCBitmap[3],m_MIDISystemCCBitmap[2],m_MIDISystemCCBitmap[1],m_MIDISystemCCBitmap[0]); } } CMIDIDevice::~CMIDIDevice (void) { m_pSynthesizer = 0; } void CMIDIDevice::SetChannel (u8 ucChannel, unsigned nTG) { assert (nTG < CConfig::AllToneGenerators); m_ChannelMap[nTG] = ucChannel; } u8 CMIDIDevice::GetChannel (unsigned nTG) const { assert (nTG < CConfig::AllToneGenerators); return m_ChannelMap[nTG]; } void CMIDIDevice::MIDIMessageHandler (const u8 *pMessage, size_t nLength, unsigned nCable) { // The packet contents are just normal MIDI data - see // https://www.midi.org/specifications/item/table-1-summary-of-midi-message if (m_pConfig->GetMIDIDumpEnabled ()) { switch (nLength) { case 1: if ( pMessage[0] != MIDI_TIMING_CLOCK && pMessage[0] != MIDI_ACTIVE_SENSING) { printf ("MIDI%u: %02X\n", nCable, (unsigned) pMessage[0]); } break; case 2: printf ("MIDI%u: %02X %02X\n", nCable, (unsigned) pMessage[0], (unsigned) pMessage[1]); break; case 3: printf ("MIDI%u: %02X %02X %02X\n", nCable, (unsigned) pMessage[0], (unsigned) pMessage[1], (unsigned) pMessage[2]); break; default: switch(pMessage[0]) { case MIDI_SYSTEM_EXCLUSIVE_BEGIN: printf("MIDI%u: SysEx data length: [%d]:",nCable, uint16_t(nLength)); for (uint16_t i = 0; i < nLength; i++) { if((i % 16) == 0) printf("\n%04d:",i); printf(" 0x%02x",pMessage[i]); } printf("\n"); break; default: printf("MIDI%u: Unhandled MIDI event type %0x02x\n",nCable,pMessage[0]); } break; } } // Only for debugging: /* if(pMessage[0]==MIDI_SYSTEM_EXCLUSIVE_BEGIN) { printf("MIDI%u: SysEx data length: [%d]:",nCable, uint16_t(nLength)); for (uint16_t i = 0; i < nLength; i++) { if((i % 16) == 0) printf("\n%04d:",i); printf(" 0x%02x",pMessage[i]); } printf("\n"); } */ // Handle MIDI Thru if (m_DeviceName.compare (m_pConfig->GetMIDIThruIn ()) == 0) { TDeviceMap::const_iterator Iterator; Iterator = s_DeviceMap.find (m_pConfig->GetMIDIThruOut ()); if (Iterator != s_DeviceMap.end ()) { Iterator->second->Send (pMessage, nLength, nCable); } } if (nLength < 2) { // LOGERR("MIDI message is shorter than 2 bytes!"); return; } m_MIDISpinLock.Acquire (); u8 ucStatus = pMessage[0]; u8 ucChannel = ucStatus & 0x0F; u8 ucType = ucStatus >> 4; // GLOBAL MIDI SYSEX if (pMessage[0] == MIDI_SYSTEM_EXCLUSIVE_BEGIN && pMessage[3] == 0x04 && pMessage[4] == 0x01 && pMessage[nLength-1] == MIDI_SYSTEM_EXCLUSIVE_END) // MASTER VOLUME { float32_t nMasterVolume=((pMessage[5] & 0x7c) & ((pMessage[6] & 0x7c) <<7))/(1<<14); LOGNOTE("Master volume: %f",nMasterVolume); m_pSynthesizer->setMasterVolume(nMasterVolume); } else { // Perform any MiniDexed level MIDI handling before specific Tone Generators unsigned nPerfCh = m_pSynthesizer->GetPerformanceSelectChannel(); switch (ucType) { case MIDI_CONTROL_CHANGE: // Check for performance PC messages if (nPerfCh != Disabled) { if ((ucChannel == nPerfCh) || (nPerfCh == OmniMode)) { if (pMessage[1] == MIDI_CC_BANK_SELECT_MSB) { m_pSynthesizer->BankSelectMSBPerformance (pMessage[2]); } else if (pMessage[1] == MIDI_CC_BANK_SELECT_LSB) { m_pSynthesizer->BankSelectLSBPerformance (pMessage[2]); } else { // Ignore any other CC messages at this time } } } if (nLength == 3) { m_pUI->UIMIDICmdHandler (ucChannel, ucStatus & 0xF0, pMessage[1], pMessage[2]); } break; case MIDI_NOTE_OFF: case MIDI_NOTE_ON: if (nLength < 3) { break; } m_pUI->UIMIDICmdHandler (ucChannel, ucStatus & 0xF0, pMessage[1], pMessage[2]); break; case MIDI_PROGRAM_CHANGE: // Check for performance PC messages if( m_pConfig->GetMIDIRXProgramChange() ) { if( nPerfCh != Disabled) { if ((ucChannel == nPerfCh) || (nPerfCh == OmniMode)) { //printf("Performance Select Channel %d\n", nPerfCh); m_pSynthesizer->ProgramChangePerformance (pMessage[1]); } } } break; } // Process MIDI for each active Tone Generator bool bSystemCCHandled = false; bool bSystemCCChecked = false; for (unsigned nTG = 0; nTG < m_pConfig->GetToneGenerators() && !bSystemCCHandled; nTG++) { if (ucStatus == MIDI_SYSTEM_EXCLUSIVE_BEGIN) { // MIDI SYSEX per MIDI channel uint8_t ucSysExChannel = (pMessage[2] & 0x0F); if (m_ChannelMap[nTG] == ucSysExChannel || m_ChannelMap[nTG] == OmniMode) { LOGNOTE("MIDI-SYSEX: channel: %u, len: %u, TG: %u",m_ChannelMap[nTG],nLength,nTG); HandleSystemExclusive(pMessage, nLength, nCable, nTG); } } else { if ( m_ChannelMap[nTG] == ucChannel || m_ChannelMap[nTG] == OmniMode) { switch (ucType) { case MIDI_NOTE_ON: if (nLength < 3) { break; } if (pMessage[2] > 0) { if (pMessage[2] <= 127) { m_pSynthesizer->keydown (pMessage[1], pMessage[2], nTG); } } else { m_pSynthesizer->keyup (pMessage[1], nTG); } break; case MIDI_NOTE_OFF: if (nLength < 3) { break; } m_pSynthesizer->keyup (pMessage[1], nTG); break; case MIDI_CHANNEL_AFTERTOUCH: m_pSynthesizer->setAftertouch (pMessage[1], nTG); m_pSynthesizer->ControllersRefresh (nTG); break; case MIDI_CONTROL_CHANGE: if (nLength < 3) { break; } switch (pMessage[1]) { case MIDI_CC_MODULATION: m_pSynthesizer->setModWheel (pMessage[2], nTG); m_pSynthesizer->ControllersRefresh (nTG); break; case MIDI_CC_FOOT_PEDAL: m_pSynthesizer->setFootController (pMessage[2], nTG); m_pSynthesizer->ControllersRefresh (nTG); break; case MIDI_CC_BREATH_CONTROLLER: m_pSynthesizer->setBreathController (pMessage[2], nTG); m_pSynthesizer->ControllersRefresh (nTG); break; case MIDI_CC_VOLUME: m_pSynthesizer->SetVolume (pMessage[2], nTG); break; case MIDI_CC_PAN_POSITION: m_pSynthesizer->SetPan (pMessage[2], nTG); break; case MIDI_CC_BANK_SELECT_MSB: m_pSynthesizer->BankSelectMSB (pMessage[2], nTG); break; case MIDI_CC_BANK_SELECT_LSB: m_pSynthesizer->BankSelectLSB (pMessage[2], nTG); break; case MIDI_CC_BANK_SUSTAIN: m_pSynthesizer->setSustain (pMessage[2] >= 64, nTG); break; case MIDI_CC_RESONANCE: m_pSynthesizer->SetResonance (maplong (pMessage[2], 0, 127, 0, 99), nTG); break; case MIDI_CC_FREQUENCY_CUTOFF: m_pSynthesizer->SetCutoff (maplong (pMessage[2], 0, 127, 0, 99), nTG); break; case MIDI_CC_REVERB_LEVEL: m_pSynthesizer->SetReverbSend (maplong (pMessage[2], 0, 127, 0, 99), nTG); break; case MIDI_CC_DETUNE_LEVEL: if (pMessage[2] == 0) { // "0 to 127, with 0 being no celeste (detune) effect applied at all." m_pSynthesizer->SetMasterTune (0, nTG); } else { m_pSynthesizer->SetMasterTune (maplong (pMessage[2], 1, 127, -99, 99), nTG); } break; case MIDI_CC_ALL_SOUND_OFF: m_pSynthesizer->panic (pMessage[2], nTG); break; case MIDI_CC_ALL_NOTES_OFF: // As per "MIDI 1.0 Detailed Specification" v4.2 // From "ALL NOTES OFF" states: // "Receivers should ignore an All Notes Off message while Omni is on (Modes 1 & 2)" if (!m_pConfig->GetIgnoreAllNotesOff () && m_ChannelMap[nTG] != OmniMode) { m_pSynthesizer->notesOff (pMessage[2], nTG); } break; default: // Check for system-level, cross-TG MIDI Controls, but only do it once. // Also, if successfully handled, then no need to process other TGs, // so it is possible to break out of the main TG loop too. // Note: We handle this here so we get the TG MIDI channel checking. if (!bSystemCCChecked) { bSystemCCHandled = HandleMIDISystemCC(pMessage[1], pMessage[2]); bSystemCCChecked = true; } break; } break; case MIDI_PROGRAM_CHANGE: // do program change only if enabled in config and not in "Performance Select Channel" mode if( m_pConfig->GetMIDIRXProgramChange() && ( m_pSynthesizer->GetPerformanceSelectChannel() == Disabled) ) { //printf("Program Change to %d (%d)\n", ucChannel, m_pSynthesizer->GetPerformanceSelectChannel()); m_pSynthesizer->ProgramChange (pMessage[1], nTG); } break; case MIDI_PITCH_BEND: { if (nLength < 3) { break; } s16 nValue = pMessage[1]; nValue |= (s16) pMessage[2] << 7; nValue -= 0x2000; m_pSynthesizer->setPitchbend (nValue, nTG); } break; default: break; } } } } } m_MIDISpinLock.Release (); } void CMIDIDevice::AddDevice (const char *pDeviceName) { assert (pDeviceName); assert (m_DeviceName.empty ()); m_DeviceName = pDeviceName; assert (!m_DeviceName.empty ()); s_DeviceMap.insert (std::pair (pDeviceName, this)); } bool CMIDIDevice::HandleMIDISystemCC(const u8 ucCC, const u8 ucCCval) { // This only makes sense when there are at least 8 TGs. // Note: If more than 8 TGs then only 8 TGs are controllable this way. if (m_pConfig->GetToneGenerators() < 8) { return false; } // Quickly reject any CCs not in the configured maps if ((m_MIDISystemCCBitmap[ucCC>>5] & (1<<(ucCC%32))) == 0) { // Not in the map return false; } // Not looking for duplicate CCs so return once handled for (unsigned tg=0; tg<8; tg++) { if (m_nMIDISystemCCVol != 0) { if (ucCC == MIDISystemCCMap[m_nMIDISystemCCVol][tg]) { m_pSynthesizer->SetVolume (ucCCval, tg); return true; } } if (m_nMIDISystemCCPan != 0) { if (ucCC == MIDISystemCCMap[m_nMIDISystemCCPan][tg]) { m_pSynthesizer->SetPan (ucCCval, tg); return true; } } if (m_nMIDISystemCCDetune != 0) { if (ucCC == MIDISystemCCMap[m_nMIDISystemCCDetune][tg]) { if (ucCCval == 0) { m_pSynthesizer->SetMasterTune (0, tg); } else { m_pSynthesizer->SetMasterTune (maplong (ucCCval, 1, 127, -99, 99), tg); } return true; } } } return false; } void CMIDIDevice::HandleSystemExclusive(const uint8_t* pMessage, const size_t nLength, const unsigned nCable, const uint8_t nTG) { int16_t sysex_return; sysex_return = m_pSynthesizer->checkSystemExclusive(pMessage, nLength, nTG); LOGDBG("SYSEX handler return value: %d", sysex_return); switch (sysex_return) { case -1: LOGERR("SysEx end status byte not detected."); break; case -2: LOGERR("SysEx vendor not Yamaha."); break; case -3: LOGERR("Unknown SysEx parameter change."); break; case -4: LOGERR("Unknown SysEx voice or function."); break; case -5: LOGERR("Not a SysEx voice bulk upload."); break; case -6: LOGERR("Wrong length for SysEx voice bulk upload (not 155)."); break; case -7: LOGERR("Checksum error for one voice."); break; case -8: LOGERR("Not a SysEx bank bulk upload."); break; case -9: LOGERR("Wrong length for SysEx bank bulk upload (not 4096)."); case -10: LOGERR("Checksum error for bank."); break; case -11: LOGERR("Unknown SysEx message."); break; case 64: LOGDBG("SysEx Function parameter change: %d Value %d",pMessage[4],pMessage[5]); m_pSynthesizer->setMonoMode(pMessage[5],nTG); break; case 65: LOGDBG("SysEx Function parameter change: %d Value %d",pMessage[4],pMessage[5]); m_pSynthesizer->setPitchbendRange(pMessage[5],nTG); break; case 66: LOGDBG("SysEx Function parameter change: %d Value %d",pMessage[4],pMessage[5]); m_pSynthesizer->setPitchbendStep(pMessage[5],nTG); break; case 67: LOGDBG("SysEx Function parameter change: %d Value %d",pMessage[4],pMessage[5]); m_pSynthesizer->setPortamentoMode(pMessage[5],nTG); break; case 68: LOGDBG("SysEx Function parameter change: %d Value %d",pMessage[4],pMessage[5]); m_pSynthesizer->setPortamentoGlissando(pMessage[5],nTG); break; case 69: LOGDBG("SysEx Function parameter change: %d Value %d",pMessage[4],pMessage[5]); m_pSynthesizer->setPortamentoTime(pMessage[5],nTG); break; case 70: LOGDBG("SysEx Function parameter change: %d Value %d",pMessage[4],pMessage[5]); m_pSynthesizer->setModWheelRange(pMessage[5],nTG); break; case 71: LOGDBG("SysEx Function parameter change: %d Value %d",pMessage[4],pMessage[5]); m_pSynthesizer->setModWheelTarget(pMessage[5],nTG); break; case 72: LOGDBG("SysEx Function parameter change: %d Value %d",pMessage[4],pMessage[5]); m_pSynthesizer->setFootControllerRange(pMessage[5],nTG); break; case 73: LOGDBG("SysEx Function parameter change: %d Value %d",pMessage[4],pMessage[5]); m_pSynthesizer->setFootControllerTarget(pMessage[5],nTG); break; case 74: LOGDBG("SysEx Function parameter change: %d Value %d",pMessage[4],pMessage[5]); m_pSynthesizer->setBreathControllerRange(pMessage[5],nTG); break; case 75: LOGDBG("SysEx Function parameter change: %d Value %d",pMessage[4],pMessage[5]); m_pSynthesizer->setBreathControllerTarget(pMessage[5],nTG); break; case 76: LOGDBG("SysEx Function parameter change: %d Value %d",pMessage[4],pMessage[5]); m_pSynthesizer->setAftertouchRange(pMessage[5],nTG); break; case 77: LOGDBG("SysEx Function parameter change: %d Value %d",pMessage[4],pMessage[5]); m_pSynthesizer->setAftertouchTarget(pMessage[5],nTG); break; case 100: // load sysex-data into voice memory LOGDBG("One Voice bulk upload"); m_pSynthesizer->loadVoiceParameters(pMessage,nTG); break; case 200: LOGDBG("Bank bulk upload."); //TODO: add code for storing a bank bulk upload LOGNOTE("Currently code for storing a bulk bank upload is missing!"); break; default: if(sysex_return >= 300 && sysex_return < 500) { LOGDBG("SysEx voice parameter change: Parameter %d value: %d",pMessage[4] + ((pMessage[3] & 0x03) * 128), pMessage[5]); m_pSynthesizer->setVoiceDataElement(pMessage[4] + ((pMessage[3] & 0x03) * 128), pMessage[5],nTG); switch(pMessage[4] + ((pMessage[3] & 0x03) * 128)) { case 134: m_pSynthesizer->notesOff(0,nTG); break; } } else if(sysex_return >= 500 && sysex_return < 600) { LOGDBG("SysEx send voice %u request",sysex_return-500); SendSystemExclusiveVoice(sysex_return-500, nCable, nTG); } break; } } void CMIDIDevice::SendSystemExclusiveVoice(uint8_t nVoice, const unsigned nCable, uint8_t nTG) { uint8_t voicedump[163]; // Get voice sysex dump from TG m_pSynthesizer->getSysExVoiceDump(voicedump, nTG); TDeviceMap::const_iterator Iterator; // send voice dump to all MIDI interfaces for(Iterator = s_DeviceMap.begin(); Iterator != s_DeviceMap.end(); ++Iterator) { Iterator->second->Send (voicedump, sizeof(voicedump)*sizeof(uint8_t)); // LOGDBG("Send SYSEX voice dump %u to \"%s\"",nVoice,Iterator->first.c_str()); } }