mirror of https://github.com/probonopd/MiniDexed
probonopd
3 years ago
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//
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// userinterface.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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// 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 "userinterface.h" |
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#include "minidexed.h" |
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#include <circle/logger.h> |
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#include <circle/string.h> |
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#include <circle/startup.h> |
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#include <stdio.h> |
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#include <string.h> |
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#include <string> |
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#include <assert.h> |
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LOGMODULE ("ui"); |
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CUserInterface::CUserInterface (CMiniDexed *pMiniDexed, CGPIOManager *pGPIOManager, CConfig *pConfig) |
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: m_pMiniDexed (pMiniDexed), |
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m_pGPIOManager (pGPIOManager), |
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m_pConfig (pConfig), |
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m_pLCD (0), |
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m_pLCDBuffered (0), |
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m_pRotaryEncoder (0), |
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m_UIMode (UIModeVoiceSelect), |
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m_nTG (0) |
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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_nBank[nTG] = 0; |
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m_nProgram[nTG] = 0; |
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m_nVolume[nTG] = 0; |
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m_nPan[nTG] = 64; |
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m_nMasterTune[nTG] = 0; |
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m_uchMIDIChannel[nTG] = CMIDIDevice::Disabled; |
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} |
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} |
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CUserInterface::~CUserInterface (void) |
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{ |
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delete m_pRotaryEncoder; |
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delete m_pLCDBuffered; |
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delete m_pLCD; |
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} |
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bool CUserInterface::Initialize (void) |
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{ |
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assert (m_pConfig); |
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if (m_pConfig->GetLCDEnabled ()) |
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{ |
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m_pLCD = new CHD44780Device (CConfig::LCDColumns, CConfig::LCDRows, |
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m_pConfig->GetLCDPinData4 (), |
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m_pConfig->GetLCDPinData5 (), |
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m_pConfig->GetLCDPinData6 (), |
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m_pConfig->GetLCDPinData7 (), |
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m_pConfig->GetLCDPinEnable (), |
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m_pConfig->GetLCDPinRegisterSelect (), |
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m_pConfig->GetLCDPinReadWrite ()); |
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assert (m_pLCD); |
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if (!m_pLCD->Initialize ()) |
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{ |
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return false; |
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} |
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m_pLCDBuffered = new CWriteBufferDevice (m_pLCD); |
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assert (m_pLCDBuffered); |
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LCDWrite ("\x1B[?25l\x1B""d+"); // cursor off, autopage mode
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LOGDBG ("LCD initialized"); |
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} |
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if (m_pConfig->GetEncoderEnabled ()) |
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{ |
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m_pRotaryEncoder = new CKY040 (m_pConfig->GetEncoderPinClock (), |
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m_pConfig->GetEncoderPinData (), |
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m_pConfig->GetEncoderPinSwitch (), |
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m_pGPIOManager); |
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assert (m_pRotaryEncoder); |
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if (!m_pRotaryEncoder->Initialize ()) |
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{ |
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return false; |
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} |
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m_pRotaryEncoder->RegisterEventHandler (EncoderEventStub, this); |
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LOGDBG ("Rotary encoder initialized"); |
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} |
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return true; |
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} |
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void CUserInterface::Process (void) |
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{ |
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if (m_pLCDBuffered) |
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{ |
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m_pLCDBuffered->Update (); |
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} |
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} |
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void CUserInterface::BankSelected (unsigned nBankLSB, unsigned nTG) |
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{ |
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assert (nBankLSB < 128); |
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assert (nTG < CConfig::ToneGenerators); |
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m_nBank[nTG] = nBankLSB; |
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assert (m_pMiniDexed); |
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std::string BankName = m_pMiniDexed->GetSysExFileLoader ()->GetBankName (nBankLSB); |
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// MIDI numbering starts with 0, user interface with 1
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printf ("TG%u: Select voice bank %u: \"%s\"\n", nTG+1, nBankLSB+1, BankName.c_str ()); |
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if ( m_UIMode == UIModeBankSelect |
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&& m_nTG == nTG) |
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{ |
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CString TG; |
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TG.Format ("TG%u", nTG+1); |
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CString String; |
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String.Format ("%u", nBankLSB+1); |
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DisplayWrite (TG, "BANK", String, BankName.c_str ()); |
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} |
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} |
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void CUserInterface::ProgramChanged (unsigned nProgram, unsigned nTG) |
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{ |
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assert (nProgram < 128); |
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assert (nTG < CConfig::ToneGenerators); |
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m_nProgram[nTG] = nProgram; |
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nProgram++; // MIDI numbering starts with 0, user interface with 1
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assert (m_pMiniDexed); |
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std::string VoiceName = m_pMiniDexed->GetVoiceName (nTG); |
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printf ("TG%u: Loading voice %u: \"%s\"\n", nTG+1, nProgram, VoiceName.c_str ()); |
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if ( m_UIMode == UIModeVoiceSelect |
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&& m_nTG == nTG) |
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{ |
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CString TG; |
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TG.Format ("TG%u", nTG+1); |
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CString String; |
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String.Format ("%u", nProgram); |
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DisplayWrite (TG, "VOICE", String, VoiceName.c_str ()); |
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} |
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} |
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void CUserInterface::VolumeChanged (unsigned nVolume, unsigned nTG) |
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{ |
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assert (nVolume < 128); |
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assert (nTG < CConfig::ToneGenerators); |
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m_nVolume[nTG] = nVolume; |
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if ( m_UIMode == UIModeVolume |
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&& m_nTG == nTG) |
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{ |
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CString TG; |
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TG.Format ("TG%u", nTG+1); |
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char VolumeBar[CConfig::LCDColumns+1]; |
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memset (VolumeBar, 0xFF, sizeof VolumeBar); // 0xFF is the block character
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VolumeBar[nVolume * CConfig::LCDColumns / 127] = '\0'; |
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DisplayWrite (TG, "VOLUME", VolumeBar); |
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} |
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} |
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void CUserInterface::PanChanged (unsigned nPan, unsigned nTG) |
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{ |
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assert (nPan < 128); |
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assert (nTG < CConfig::ToneGenerators); |
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m_nPan[nTG] = nPan; |
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if ( m_UIMode == UIModePan |
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&& m_nTG == nTG) |
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{ |
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CString TG; |
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TG.Format ("TG%u", nTG+1); |
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char PanMarker[CConfig::LCDColumns+1]; |
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memset (PanMarker, '.', CConfig::LCDColumns); |
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PanMarker[CConfig::LCDColumns] = '\0'; |
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unsigned nIndex = nPan * CConfig::LCDColumns / 127; |
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if (nIndex == CConfig::LCDColumns) |
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{ |
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nIndex--; |
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} |
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PanMarker[nIndex] = '\xFF'; |
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DisplayWrite (TG, "PAN", PanMarker); |
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} |
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} |
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void CUserInterface::MasterTuneChanged (int nMasterTune, unsigned nTG) |
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{ |
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assert (-99 <= nMasterTune && nMasterTune <= 99); |
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assert (nTG < CConfig::ToneGenerators); |
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m_nMasterTune[nTG] = nMasterTune; |
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if ( m_UIMode == UIModeMasterTune |
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&& m_nTG == nTG) |
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{ |
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CString TG; |
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TG.Format ("TG%u", nTG+1); |
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CString String; |
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String.Format ("%d", nMasterTune); |
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DisplayWrite (TG, "MASTER TUNE", "DETUNE", (const char *) String); |
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} |
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} |
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void CUserInterface::MIDIChannelChanged (uint8_t uchChannel, unsigned nTG) |
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{ |
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assert (nTG < CConfig::ToneGenerators); |
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m_uchMIDIChannel[nTG] = uchChannel; |
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if ( m_UIMode == UIModeMIDI |
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&& m_nTG == nTG) |
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{ |
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CString TG; |
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TG.Format ("TG%u", nTG+1); |
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CString String; |
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switch (uchChannel) |
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{ |
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case CMIDIDevice::OmniMode: String = "OMNI"; break; |
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case CMIDIDevice::Disabled: String = "OFF"; break; |
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default: |
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String.Format ("%u", (unsigned) uchChannel+1); |
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break; |
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} |
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DisplayWrite (TG, "MIDI", "CHANNEL", (const char *) String); |
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} |
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} |
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void CUserInterface::DisplayWrite (const char *pInstance, const char *pMenu, |
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const char *pParam, const char *pValue) |
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{ |
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assert (pInstance); |
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assert (pMenu); |
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assert (pParam); |
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// Do not show instance, if there is only one.
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if (CConfig::ToneGenerators == 1) |
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{ |
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pInstance = ""; |
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} |
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CString Msg ("\x1B[H"); // cursor home
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// first line
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Msg.Append (pInstance); |
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size_t nLen = strlen (pInstance) + strlen (pMenu); |
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if (nLen < CConfig::LCDColumns) |
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{ |
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for (unsigned i = CConfig::LCDColumns-nLen; i > 0; i--) |
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{ |
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Msg.Append (" "); |
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} |
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} |
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Msg.Append (pMenu); |
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// second line
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CString ParamValue (pParam); |
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if (pValue) |
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{ |
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ParamValue.Append ("="); |
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ParamValue.Append (pValue); |
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} |
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Msg.Append (ParamValue); |
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if (ParamValue.GetLength () < CConfig::LCDColumns) |
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{ |
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Msg.Append ("\x1B[K"); // clear end of line
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} |
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LCDWrite (Msg); |
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} |
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void CUserInterface::LCDWrite (const char *pString) |
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{ |
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if (m_pLCDBuffered) |
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{ |
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m_pLCDBuffered->Write (pString, strlen (pString)); |
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} |
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} |
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void CUserInterface::EncoderEventHandler (CKY040::TEvent Event) |
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{ |
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int nStep = 0; |
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switch (Event) |
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{ |
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case CKY040::EventClockwise: |
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nStep = 1; |
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break; |
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case CKY040::EventCounterclockwise: |
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nStep = -1; |
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break; |
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case CKY040::EventSwitchClick: |
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m_UIMode = static_cast <TUIMode> (m_UIMode+1); |
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if (m_UIMode == UIModeUnknown) |
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{ |
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m_UIMode = UIModeStart; |
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} |
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break; |
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case CKY040::EventSwitchDoubleClick: |
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if (++m_nTG == CConfig::ToneGenerators) |
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{ |
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m_nTG = 0; |
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} |
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break; |
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case CKY040::EventSwitchHold: |
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if (m_pRotaryEncoder->GetHoldSeconds () >= 3) |
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{ |
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delete m_pLCD; // reset LCD
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reboot (); |
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} |
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else |
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{ |
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m_UIMode = UIModeStart; |
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m_nTG = 0; |
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} |
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break; |
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default: |
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return; |
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} |
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switch (m_UIMode) |
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{ |
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case UIModeBankSelect: |
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if (m_nBank[m_nTG] + nStep < 128) |
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{ |
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m_pMiniDexed->BankSelectLSB (m_nBank[m_nTG] + nStep, m_nTG); |
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} |
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break; |
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case UIModeVoiceSelect: |
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if (m_nProgram[m_nTG] + nStep < 32) |
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{ |
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m_pMiniDexed->ProgramChange (m_nProgram[m_nTG] + nStep, m_nTG); |
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} |
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break; |
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case UIModeVolume: { |
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const int Increment = 128 / CConfig::LCDColumns; |
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int nVolume = m_nVolume[m_nTG] + nStep*Increment; |
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if (nVolume < 0) |
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{ |
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nVolume = 0; |
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} |
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else if (nVolume > 127) |
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{ |
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nVolume = 127; |
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} |
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m_pMiniDexed->SetVolume (nVolume, m_nTG); |
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} break; |
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case UIModePan: { |
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const int Increment = 128 / CConfig::LCDColumns; |
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int nPan = m_nPan[m_nTG] + nStep*Increment; |
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if (nPan < 0) |
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{ |
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nPan = 0; |
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} |
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else if (nPan > 127) |
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{ |
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nPan = 127; |
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} |
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m_pMiniDexed->SetPan (nPan, m_nTG); |
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} break; |
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case UIModeMasterTune: { |
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int nMasterTune = m_nMasterTune[m_nTG] + nStep; |
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if (nMasterTune < -99) |
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{ |
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nMasterTune = -99; |
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} |
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else if (nMasterTune > 99) |
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{ |
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nMasterTune = 99; |
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} |
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m_pMiniDexed->SetMasterTune (nMasterTune, m_nTG); |
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} break; |
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case UIModeMIDI: |
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if ((uint8_t) (m_uchMIDIChannel[m_nTG] + nStep) < CMIDIDevice::ChannelUnknown) |
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{ |
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m_pMiniDexed->SetMIDIChannel (m_uchMIDIChannel[m_nTG] + nStep, m_nTG); |
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} |
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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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void CUserInterface::EncoderEventStub (CKY040::TEvent Event, void *pParam) |
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{ |
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CUserInterface *pThis = static_cast<CUserInterface *> (pParam); |
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assert (pThis != 0); |
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pThis->EncoderEventHandler (Event); |
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} |
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