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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/***************************************************************************
* inputprocessor.h
*
* Sat Apr 23 20:39:30 CEST 2016
* Copyright 2016 Andr� Nusser
* andre.nusser@googlemail.com
****************************************************************************/
/*
* This file is part of DrumGizmo.
*
* DrumGizmo 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 3 of the License, or
* (at your option) any later version.
*
* DrumGizmo 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 DrumGizmo; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
*/
#pragma once
#include <vector>
#include <list>
#include <unordered_map>
#include <memory>
#include "drumkit.h"
#include "events.h"
#include "events_ds.h"
#include "id.h"
#include "inputfilter.h"
#include "engineevent.h"
#include "instrumentstate.h"
struct Settings;
class Random;
class InputProcessor
{
public:
InputProcessor(Settings& settings,
DrumKit& kit,
EventsDS& events_ds,
Random& random);
bool process(std::vector<event_t>& events,
std::size_t pos,
double resample_ratio);
std::size_t getLatency() const;
private:
DrumKit& kit;
EventsDS& events_ds;
bool is_stopping{false}; ///< Is set to true when a EventType::Stop event has been seen.
bool processOnset(event_t& event, std::size_t pos, double resample_ratio);
bool processChoke(event_t& event, std::size_t pos, double resample_ratio);
bool processStateChange(event_t& event, std::size_t pos);
bool processResetStates();
bool processStop(event_t& event);
bool processOpennessChange(event_t& event, Instrument &inst, float openness, size_t pos);
//! Applies choke with rampdown time in ms to event starting at offset.
void applyChoke(Settings& settings, SampleEvent& event,
double length_ms, timepos_t offset, std::size_t pos);
//! Applies choke group actions to active events based on the input event
void applyChokeGroup(Settings& settings, DrumKit& kit,
Instrument& instr, event_t& event,
EventsDS& events_ds, std::size_t pos);
//! Applies directed choke actions to active events based on the input event
void applyDirectedChoke(Settings& settings, DrumKit& kit,
Instrument& instr, event_t& event,
EventsDS& events_ds, std::size_t pos);
//! Ramps down samples from events_ds is there are more groups playing than
//! max_voices for a given instrument.
void limitVoices(std::size_t instrument_id, std::size_t max_voices,
float rampdown_time, std::size_t pos);
std::vector<std::unique_ptr<InputFilter>> filters;
Settings& settings;
float original_velocity{0.0f};
std::unordered_map<std::size_t, InstrumentState> instrument_states;
};
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