//
// event.h
//
// mt32-pi - A baremetal MIDI synthesizer for Raspberry Pi
// Copyright (C) 2020-2023 Dale Whinham <daleyo@gmail.com>
//
// This file is part of mt32-pi.
//
// mt32-pi 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.
//
// mt32-pi 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
// mt32-pi. If not, see <http://www.gnu.org/licenses/>.
//

#ifndef _event_h
#define _event_h

#include "control/button.h"
#include "lcd/images.h"
#include "ringbuffer.h"
#include "synth/mt32romset.h"
#include "synth/synth.h"

struct TButtonEvent
{
	TButton Button;
	bool bPressed;
	bool bRepeat;
};

struct TEncoderEvent
{
	s8 nDelta;
};

struct TSwitchSynthEvent
{
	TSynth Synth;
};

struct TSwitchMT32ROMSetEvent
{
	TMT32ROMSet ROMSet;
};

struct TSwitchSoundFontEvent
{
	size_t Index;
};

struct TAllSoundOffEvent
{
	// No payload
};

struct TDisplayImageEvent
{
	TImage Image;
};

enum class TEventType
{
	Button,
	Encoder,
	SwitchSynth,
	SwitchMT32ROMSet,
	SwitchSoundFont,
	AllSoundOff,
	DisplayImage,
};

struct TEvent
{
	TEventType Type;

	union
	{
		TButtonEvent Button;
		TEncoderEvent Encoder;
		TSwitchSynthEvent SwitchSynth;
		TSwitchMT32ROMSetEvent SwitchMT32ROMSet;
		TSwitchSoundFontEvent SwitchSoundFont;
		TAllSoundOffEvent AllSoundOff;
		TDisplayImageEvent DisplayImage;
	};
};

constexpr size_t EventQueueSize = 32;
using TEventQueue               = CRingBuffer<TEvent, EventQueueSize>;

#endif