92 lines
2.8 KiB
C++
92 lines
2.8 KiB
C++
/* Copyright (C) 2003, 2004, 2005, 2006, 2008, 2009 Dean Beeler, Jerome Fisher
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* Copyright (C) 2011-2022 Dean Beeler, Jerome Fisher, Sergey V. Mikayev
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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 Lesser General Public License as published by
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* the Free Software Foundation, either version 2.1 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 Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser 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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#ifndef MT32EMU_DISPLAY_H
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#define MT32EMU_DISPLAY_H
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#include "globals.h"
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#include "Types.h"
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namespace MT32Emu {
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class Synth;
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/** Facilitates emulation of internal state of the MIDI MESSAGE LED and the MT-32 LCD. */
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class Display {
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public:
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static const unsigned int LCD_TEXT_SIZE = 20;
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enum Mode {
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Mode_MAIN, // a.k.a. Master Volume
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Mode_STARTUP_MESSAGE,
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Mode_PROGRAM_CHANGE,
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Mode_CUSTOM_MESSAGE,
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Mode_ERROR_MESSAGE
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};
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Display(Synth &synth);
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void checkDisplayStateUpdated(bool &midiMessageLEDState, bool &midiMessageLEDUpdated, bool &lcdUpdated);
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/** Returns whether the MIDI MESSAGE LED is ON and fills the targetBuffer parameter. */
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bool getDisplayState(char *targetBuffer, bool narrowLCD);
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void setMainDisplayMode();
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void midiMessagePlayed();
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void rhythmNotePlayed();
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void voicePartStateChanged(Bit8u partIndex, bool activated);
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void masterVolumeChanged();
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void programChanged(Bit8u partIndex);
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void checksumErrorOccurred();
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bool customDisplayMessageReceived(const Bit8u *message, Bit32u startIndex, Bit32u length);
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void displayControlMessageReceived(const Bit8u *messageBytes, Bit32u length);
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private:
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typedef Bit8u DisplayBuffer[LCD_TEXT_SIZE];
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static const unsigned int TIMBRE_NAME_SIZE = 10;
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Synth &synth;
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bool lastLEDState;
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bool lcdDirty;
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bool lcdUpdateSignalled;
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bool lastRhythmPartState;
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bool voicePartStates[8];
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Bit8u lastProgramChangePartIndex;
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const char *lastProgramChangeSoundGroupName;
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Bit8u lastProgramChangeTimbreName[TIMBRE_NAME_SIZE];
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Mode mode;
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Bit32u displayResetTimestamp;
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bool displayResetScheduled;
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Bit32u midiMessageLEDResetTimestamp;
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bool midiMessagePlayedSinceLastReset;
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Bit32u rhythmStateResetTimestamp;
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bool rhythmNotePlayedSinceLastReset;
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DisplayBuffer displayBuffer;
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DisplayBuffer customMessageBuffer;
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void scheduleDisplayReset();
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bool shouldResetTimer(Bit32u scheduledResetTimestamp);
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void maybeResetTimer(bool &timerState, Bit32u scheduledResetTimestamp);
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};
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} // namespace MT32Emu
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#endif // #ifndef MT32EMU_DISPLAY_H
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