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/* Copyright (C) 2003, 2004, 2005, 2006, 2008, 2009 Dean Beeler, Jerome Fisher
* Copyright (C) 2011-2022 Dean Beeler, Jerome Fisher, Sergey V. Mikayev
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 2.1 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef MT32EMU_DISPLAY_H
#define MT32EMU_DISPLAY_H
#include "globals.h"
#include "Types.h"
namespace MT32Emu {
class Synth;
/** Facilitates emulation of internal state of the MIDI MESSAGE LED and the MT-32 LCD. */
class Display {
public:
static const unsigned int LCD_TEXT_SIZE = 20;
enum Mode {
Mode_MAIN, // a.k.a. Master Volume
Mode_STARTUP_MESSAGE,
Mode_PROGRAM_CHANGE,
Mode_CUSTOM_MESSAGE,
Mode_ERROR_MESSAGE
};
Display(Synth &synth);
void checkDisplayStateUpdated(bool &midiMessageLEDState, bool &midiMessageLEDUpdated, bool &lcdUpdated);
/** Returns whether the MIDI MESSAGE LED is ON and fills the targetBuffer parameter. */
bool getDisplayState(char *targetBuffer, bool narrowLCD);
void setMainDisplayMode();
void midiMessagePlayed();
void rhythmNotePlayed();
void voicePartStateChanged(Bit8u partIndex, bool activated);
void masterVolumeChanged();
void programChanged(Bit8u partIndex);
void checksumErrorOccurred();
bool customDisplayMessageReceived(const Bit8u *message, Bit32u startIndex, Bit32u length);
void displayControlMessageReceived(const Bit8u *messageBytes, Bit32u length);
private:
typedef Bit8u DisplayBuffer[LCD_TEXT_SIZE];
static const unsigned int TIMBRE_NAME_SIZE = 10;
Synth &synth;
bool lastLEDState;
bool lcdDirty;
bool lcdUpdateSignalled;
bool lastRhythmPartState;
bool voicePartStates[8];
Bit8u lastProgramChangePartIndex;
const char *lastProgramChangeSoundGroupName;
Bit8u lastProgramChangeTimbreName[TIMBRE_NAME_SIZE];
Mode mode;
Bit32u displayResetTimestamp;
bool displayResetScheduled;
Bit32u midiMessageLEDResetTimestamp;
bool midiMessagePlayedSinceLastReset;
Bit32u rhythmStateResetTimestamp;
bool rhythmNotePlayedSinceLastReset;
DisplayBuffer displayBuffer;
DisplayBuffer customMessageBuffer;
void scheduleDisplayReset();
bool shouldResetTimer(Bit32u scheduledResetTimestamp);
void maybeResetTimer(bool &timerState, Bit32u scheduledResetTimestamp);
};
} // namespace MT32Emu
#endif // #ifndef MT32EMU_DISPLAY_H
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