hmi_interface.h

/* ScummVM - Graphic Adventure Engine
 *
 * ScummVM is the legal property of its developers, whose names
 * are too numerous to list here. Please refer to the COPYRIGHT
 * file distributed with this source distribution.
 *
 * This program 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.
 *
 * 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
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 */
 
#ifndef AUDIO_EFFECTS_HMI_INTERFACE_H
#define AUDIO_EFFECTS_HMI_INTERFACE_H
 
#include "audio/effects/hmi/hmi_types.h"
 
namespace Audio {
 
typedef const char *const *HMIParamNames;
 
class HMIInterface {
public:
    virtual ~HMIInterface() {}
 
    virtual int init(HMIPreset *preset, HMIEffectNode *base) = 0;
    virtual int uninit(HMIPreset *preset, HMIEffectNode *base) = 0;
    virtual int getMinDuration(HMIEffectNode *n, uint32 *out);
    virtual int processBlock(HMIPreset *preset, HMIEffectNode *base) = 0;
    virtual int initEffect(HMIPreset *preset, HMIEffectNode *base) = 0;
    virtual int getEffectParam(HMIEffectNode *base, int param, float *value, int *type) = 0;
    virtual int setEffectParam(HMIEffectNode *base, int param, float value) = 0;
 
    int effectStructSize() const { return _effectStructSize; }
    int outChannels() const { return _outChannels; }
    const char *interfaceName() const { return _interfaceName; }
    HMIParamNames effectParams() const { return _effectParams; }
    const float *paramMinValues() const { return _paramMinValues; }
    const float *paramMaxValues() const { return _paramMaxValues; }
    const float *paramDefaultValues() const { return _paramDefaultValues; }
    const char *presetName() const { return _presetName; }
    int presetId() const { return _presetId; }
    int paramCount() const { return _paramCount; }
 
protected:
    static const double kHmiPi;
    static const double kHmiTwoPi;
    static const double kHmiMillis;
 
    HMIInterface(int size, int channels,
                 const char *dialogName, HMIParamNames params, const float *mins,
                 const float *maxs, const float *defaults, const char *name, int id,
                 int paramCount);
 
private:
    int _effectStructSize = 0;
    int _outChannels = 0;
    const char *_interfaceName = nullptr;
    HMIParamNames _effectParams = nullptr;
    const float *_paramMinValues = nullptr;
    const float *_paramMaxValues = nullptr;
    const float *_paramDefaultValues = nullptr;
    char _presetName[64] = {0};
    int _presetId = 0;
    int _paramCount = 0;
};
 
} // End of namespace Audio
 
#endif