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475 lines
13 KiB
475 lines
13 KiB
//
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// mididevice.cpp
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//
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// MiniDexed - Dexed FM synthesizer for bare metal Raspberry Pi
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// Copyright (C) 2022 The MiniDexed Team
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//
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// Original author of this class:
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// R. Stange <rsta2@o2online.de>
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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//
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#include <circle/logger.h>
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#include "mididevice.h"
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#include "minidexed.h"
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#include "config.h"
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#include <stdio.h>
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#include <assert.h>
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LOGMODULE ("mididevice");
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#define MIDI_NOTE_OFF 0b1000
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#define MIDI_NOTE_ON 0b1001
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#define MIDI_AFTERTOUCH 0b1010 // TODO
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#define MIDI_CONTROL_CHANGE 0b1011
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#define MIDI_CC_BANK_SELECT_MSB 0 // TODO
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#define MIDI_CC_MODULATION 1
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#define MIDI_CC_VOLUME 7
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#define MIDI_CC_PAN_POSITION 10
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#define MIDI_CC_BANK_SELECT_LSB 32
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#define MIDI_CC_BANK_SUSTAIN 64
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#define MIDI_CC_RESONANCE 71
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#define MIDI_CC_FREQUENCY_CUTOFF 74
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#define MIDI_CC_REVERB_LEVEL 91
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#define MIDI_CC_DETUNE_LEVEL 94
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#define MIDI_CC_ALL_SOUND_OFF 120
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#define MIDI_CC_ALL_NOTES_OFF 123
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#define MIDI_PROGRAM_CHANGE 0b1100
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#define MIDI_PITCH_BEND 0b1110
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#define MIDI_SYSTEM_EXCLUSIVE_BEGIN 0xF0
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#define MIDI_SYSTEM_EXCLUSIVE_END 0xF7
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#define MIDI_TIMING_CLOCK 0xF8
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#define MIDI_ACTIVE_SENSING 0xFE
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CMIDIDevice::TDeviceMap CMIDIDevice::s_DeviceMap;
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CMIDIDevice::CMIDIDevice (CMiniDexed *pSynthesizer, CConfig *pConfig)
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: m_pSynthesizer (pSynthesizer),
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m_pConfig (pConfig)
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{
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for (unsigned nTG = 0; nTG < CConfig::ToneGenerators; nTG++)
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{
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m_ChannelMap[nTG] = Disabled;
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}
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}
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CMIDIDevice::~CMIDIDevice (void)
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{
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m_pSynthesizer = 0;
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}
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void CMIDIDevice::SetChannel (u8 ucChannel, unsigned nTG)
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{
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assert (nTG < CConfig::ToneGenerators);
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m_ChannelMap[nTG] = ucChannel;
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}
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u8 CMIDIDevice::GetChannel (unsigned nTG) const
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{
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assert (nTG < CConfig::ToneGenerators);
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return m_ChannelMap[nTG];
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}
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void CMIDIDevice::MIDIMessageHandler (const u8 *pMessage, size_t nLength, unsigned nCable)
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{
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// The packet contents are just normal MIDI data - see
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// https://www.midi.org/specifications/item/table-1-summary-of-midi-message
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if (m_pConfig->GetMIDIDumpEnabled ())
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{
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switch (nLength)
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{
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case 1:
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if ( pMessage[0] != MIDI_TIMING_CLOCK
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&& pMessage[0] != MIDI_ACTIVE_SENSING)
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{
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printf ("MIDI%u: %02X\n", nCable, (unsigned) pMessage[0]);
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}
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break;
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case 2:
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printf ("MIDI%u: %02X %02X\n", nCable,
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(unsigned) pMessage[0], (unsigned) pMessage[1]);
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break;
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case 3:
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printf ("MIDI%u: %02X %02X %02X\n", nCable,
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(unsigned) pMessage[0], (unsigned) pMessage[1],
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(unsigned) pMessage[2]);
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break;
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default:
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switch(pMessage[0])
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{
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case MIDI_SYSTEM_EXCLUSIVE_BEGIN:
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printf("MIDI%u: SysEx data length: [%d]:",nCable, uint16_t(nLength));
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for (uint16_t i = 0; i < nLength; i++)
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{
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if((i % 16) == 0)
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printf("\n%04d:",i);
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printf(" 0x%02x",pMessage[i]);
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}
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printf("\n");
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break;
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default:
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printf("MIDI%u: Unhandled MIDI event type %0x02x\n",nCable,pMessage[0]);
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}
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break;
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}
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}
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// Only for debugging:
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/*
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if(pMessage[0]==MIDI_SYSTEM_EXCLUSIVE_BEGIN)
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{
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printf("MIDI%u: SysEx data length: [%d]:",nCable, uint16_t(nLength));
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for (uint16_t i = 0; i < nLength; i++)
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{
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if((i % 16) == 0)
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printf("\n%04d:",i);
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printf(" 0x%02x",pMessage[i]);
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}
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printf("\n");
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}
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*/
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// Handle MIDI Thru
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if (m_DeviceName.compare (m_pConfig->GetMIDIThruIn ()) == 0)
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{
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TDeviceMap::const_iterator Iterator;
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Iterator = s_DeviceMap.find (m_pConfig->GetMIDIThruOut ());
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if (Iterator != s_DeviceMap.end ())
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{
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Iterator->second->Send (pMessage, nLength, nCable);
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}
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}
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if (nLength < 2)
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{
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LOGERR("MIDI message is shorter than 2 bytes!");
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return;
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}
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m_MIDISpinLock.Acquire ();
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u8 ucStatus = pMessage[0];
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u8 ucChannel = ucStatus & 0x0F;
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u8 ucType = ucStatus >> 4;
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// GLOBAL MIDI SYSEX
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if (pMessage[0] == MIDI_SYSTEM_EXCLUSIVE_BEGIN && pMessage[3] == 0x04 && pMessage[4] == 0x01 && pMessage[nLength-1] == MIDI_SYSTEM_EXCLUSIVE_END) // MASTER VOLUME
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{
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float32_t nMasterVolume=((pMessage[5] & 0x7c) & ((pMessage[6] & 0x7c) <<7))/(1<<14);
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LOGNOTE("Master volume: %f",nMasterVolume);
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m_pSynthesizer->setMasterVolume(nMasterVolume);
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}
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else
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{
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for (unsigned nTG = 0; nTG < CConfig::ToneGenerators; nTG++)
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{
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if (ucStatus == MIDI_SYSTEM_EXCLUSIVE_BEGIN)
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{
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// MIDI SYSEX per MIDI channel
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uint8_t ucSysExChannel = (pMessage[2] & 0x07);
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if (m_ChannelMap[nTG] == ucSysExChannel || m_ChannelMap[nTG] == OmniMode)
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{
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LOGNOTE("MIDI-SYSEX: channel: %u, len: %u, TG: %u",m_ChannelMap[nTG],nLength,nTG);
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HandleSystemExclusive(pMessage, nLength, nCable, nTG);
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}
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}
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else
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{
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if ( m_ChannelMap[nTG] == ucChannel
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|| m_ChannelMap[nTG] == OmniMode)
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{
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switch (ucType)
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{
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case MIDI_NOTE_ON:
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if (nLength < 3)
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{
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break;
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}
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if (pMessage[2] > 0)
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{
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if (pMessage[2] <= 127)
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{
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m_pSynthesizer->keydown (pMessage[1],
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pMessage[2], nTG);
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}
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}
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else
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{
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m_pSynthesizer->keyup (pMessage[1], nTG);
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}
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break;
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case MIDI_NOTE_OFF:
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if (nLength < 3)
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{
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break;
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}
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m_pSynthesizer->keyup (pMessage[1], nTG);
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break;
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case MIDI_CONTROL_CHANGE:
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if (nLength < 3)
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{
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break;
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}
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switch (pMessage[1])
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{
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case MIDI_CC_MODULATION:
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m_pSynthesizer->setModWheel (pMessage[2], nTG);
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m_pSynthesizer->ControllersRefresh (nTG);
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break;
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case MIDI_CC_VOLUME:
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m_pSynthesizer->SetVolume (pMessage[2], nTG);
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break;
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case MIDI_CC_PAN_POSITION:
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m_pSynthesizer->SetPan (pMessage[2], nTG);
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break;
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case MIDI_CC_BANK_SELECT_LSB:
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m_pSynthesizer->BankSelectLSB (pMessage[2], nTG);
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break;
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case MIDI_CC_BANK_SUSTAIN:
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m_pSynthesizer->setSustain (pMessage[2] >= 64, nTG);
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break;
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case MIDI_CC_RESONANCE:
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m_pSynthesizer->SetResonance (maplong (pMessage[2], 0, 127, 0, 99), nTG);
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break;
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case MIDI_CC_FREQUENCY_CUTOFF:
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m_pSynthesizer->SetCutoff (maplong (pMessage[2], 0, 127, 0, 99), nTG);
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break;
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case MIDI_CC_REVERB_LEVEL:
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m_pSynthesizer->SetReverbSend (maplong (pMessage[2], 0, 127, 0, 99), nTG);
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break;
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case MIDI_CC_DETUNE_LEVEL:
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if (pMessage[2] == 0)
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{
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// "0 to 127, with 0 being no celeste (detune) effect applied at all."
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m_pSynthesizer->SetMasterTune (0, nTG);
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}
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else
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{
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m_pSynthesizer->SetMasterTune (maplong (pMessage[2], 1, 127, -99, 99), nTG);
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}
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break;
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case MIDI_CC_ALL_SOUND_OFF:
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m_pSynthesizer->panic (pMessage[2], nTG);
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break;
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case MIDI_CC_ALL_NOTES_OFF:
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m_pSynthesizer->notesOff (pMessage[2], nTG);
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break;
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}
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break;
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case MIDI_PROGRAM_CHANGE:
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// do program change only if enabled in config
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if( m_pConfig->GetMIDIRXProgramChange() )
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m_pSynthesizer->ProgramChange (pMessage[1], nTG);
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break;
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case MIDI_PITCH_BEND: {
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if (nLength < 3)
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{
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break;
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}
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s16 nValue = pMessage[1];
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nValue |= (s16) pMessage[2] << 7;
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nValue -= 0x2000;
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m_pSynthesizer->setPitchbend (nValue, nTG);
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} break;
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default:
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break;
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}
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}
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}
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}
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}
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m_MIDISpinLock.Release ();
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}
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void CMIDIDevice::AddDevice (const char *pDeviceName)
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{
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assert (pDeviceName);
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assert (m_DeviceName.empty ());
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m_DeviceName = pDeviceName;
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assert (!m_DeviceName.empty ());
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s_DeviceMap.insert (std::pair<std::string, CMIDIDevice *> (pDeviceName, this));
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}
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void CMIDIDevice::HandleSystemExclusive(const uint8_t* pMessage, const size_t nLength, const unsigned nCable, const uint8_t nTG)
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{
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int16_t sysex_return;
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sysex_return = m_pSynthesizer->checkSystemExclusive(pMessage, nLength, nTG);
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LOGDBG("SYSEX handler return value: %d", sysex_return);
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switch (sysex_return)
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{
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case -1:
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LOGERR("SysEx end status byte not detected.");
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break;
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case -2:
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LOGERR("SysEx vendor not Yamaha.");
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break;
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case -3:
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LOGERR("Unknown SysEx parameter change.");
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break;
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case -4:
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LOGERR("Unknown SysEx voice or function.");
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break;
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case -5:
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LOGERR("Not a SysEx voice bulk upload.");
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break;
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case -6:
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LOGERR("Wrong length for SysEx voice bulk upload (not 155).");
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break;
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case -7:
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LOGERR("Checksum error for one voice.");
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break;
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case -8:
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LOGERR("Not a SysEx bank bulk upload.");
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break;
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case -9:
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LOGERR("Wrong length for SysEx bank bulk upload (not 4096).");
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case -10:
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LOGERR("Checksum error for bank.");
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break;
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case -11:
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LOGERR("Unknown SysEx message.");
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break;
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case 64:
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LOGDBG("SysEx Function parameter change: %d Value %d",pMessage[4],pMessage[5]);
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m_pSynthesizer->setMonoMode(pMessage[5],nTG);
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break;
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case 65:
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LOGDBG("SysEx Function parameter change: %d Value %d",pMessage[4],pMessage[5]);
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m_pSynthesizer->setPitchbendRange(pMessage[5],nTG);
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break;
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case 66:
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LOGDBG("SysEx Function parameter change: %d Value %d",pMessage[4],pMessage[5]);
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m_pSynthesizer->setPitchbendStep(pMessage[5],nTG);
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break;
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case 67:
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LOGDBG("SysEx Function parameter change: %d Value %d",pMessage[4],pMessage[5]);
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m_pSynthesizer->setPortamentoMode(pMessage[5],nTG);
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break;
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case 68:
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LOGDBG("SysEx Function parameter change: %d Value %d",pMessage[4],pMessage[5]);
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m_pSynthesizer->setPortamentoGlissando(pMessage[5],nTG);
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break;
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case 69:
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LOGDBG("SysEx Function parameter change: %d Value %d",pMessage[4],pMessage[5]);
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m_pSynthesizer->setPortamentoTime(pMessage[5],nTG);
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break;
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case 70:
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LOGDBG("SysEx Function parameter change: %d Value %d",pMessage[4],pMessage[5]);
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m_pSynthesizer->setModWheelRange(pMessage[5],nTG);
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break;
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case 71:
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LOGDBG("SysEx Function parameter change: %d Value %d",pMessage[4],pMessage[5]);
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m_pSynthesizer->setModWheelTarget(pMessage[5],nTG);
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break;
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case 72:
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LOGDBG("SysEx Function parameter change: %d Value %d",pMessage[4],pMessage[5]);
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m_pSynthesizer->setFootControllerRange(pMessage[5],nTG);
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break;
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case 73:
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LOGDBG("SysEx Function parameter change: %d Value %d",pMessage[4],pMessage[5]);
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m_pSynthesizer->setFootControllerTarget(pMessage[5],nTG);
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break;
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case 74:
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LOGDBG("SysEx Function parameter change: %d Value %d",pMessage[4],pMessage[5]);
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m_pSynthesizer->setBreathControllerRange(pMessage[5],nTG);
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break;
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case 75:
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LOGDBG("SysEx Function parameter change: %d Value %d",pMessage[4],pMessage[5]);
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m_pSynthesizer->setBreathControllerTarget(pMessage[5],nTG);
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break;
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case 76:
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LOGDBG("SysEx Function parameter change: %d Value %d",pMessage[4],pMessage[5]);
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m_pSynthesizer->setAftertouchRange(pMessage[5],nTG);
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break;
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case 77:
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LOGDBG("SysEx Function parameter change: %d Value %d",pMessage[4],pMessage[5]);
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m_pSynthesizer->setAftertouchTarget(pMessage[5],nTG);
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break;
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case 100:
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// load sysex-data into voice memory
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LOGDBG("One Voice bulk upload");
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m_pSynthesizer->loadVoiceParameters(pMessage,nTG);
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break;
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case 200:
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LOGDBG("Bank bulk upload.");
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//TODO: add code for storing a bank bulk upload
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LOGNOTE("Currently code for storing a bulk bank upload is missing!");
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break;
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default:
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if(sysex_return >= 300 && sysex_return < 500)
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{
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LOGDBG("SysEx voice parameter change: Parameter %d value: %d",pMessage[4] + ((pMessage[3] & 0x03) * 128), pMessage[5]);
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m_pSynthesizer->setVoiceDataElement(pMessage[4] + ((pMessage[3] & 0x03) * 128), pMessage[5],nTG);
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switch(pMessage[4] + ((pMessage[3] & 0x03) * 128))
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{
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case 134:
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m_pSynthesizer->notesOff(0,nTG);
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break;
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}
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}
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else if(sysex_return >= 500 && sysex_return < 600)
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{
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LOGDBG("SysEx send voice %u request",sysex_return-500);
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SendSystemExclusiveVoice(sysex_return-500, nCable, nTG);
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}
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break;
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}
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}
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void CMIDIDevice::SendSystemExclusiveVoice(uint8_t nVoice, const unsigned nCable, uint8_t nTG)
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{
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uint8_t voicedump[163];
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// Get voice sysex dump from TG
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m_pSynthesizer->getSysExVoiceDump(voicedump, nTG);
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TDeviceMap::const_iterator Iterator;
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// send voice dump to all MIDI interfaces
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for(Iterator = s_DeviceMap.begin(); Iterator != s_DeviceMap.end(); ++Iterator)
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{
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Iterator->second->Send (voicedump, sizeof(voicedump)*sizeof(uint8_t));
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// LOGDBG("Send SYSEX voice dump %u to \"%s\"",nVoice,Iterator->first.c_str());
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}
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}
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