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SigScaler.h
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SigScaler.h
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/*******************************************************************************
SigScaler.h Takes a signal and performs a linear transformation and then clips
Copyright(C) 2016-2017 Howard James May
This file is part of the SweetMaker SDK
The SweetMaker SDK 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.
The SweetMaker SDK 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/>.
Contact me at sweet.maker@outlook.com
********************************************************************************
Release Date Change Description
--------|-------------|--------------------------------------------------------|
1 01-Dec-2016 Initial release
--------|-------------|--------------------------------------------------------|
2 31-Mar-2017 Added local definitions for uint16_max etc
in support of use on OS-X
*******************************************************************************/
#ifndef __SIG_SCALER_H__
#define __SIG_SCALER_H__
#ifndef NULL
#define NULL (0)
#endif
#include "ISigInput.h"
namespace SweetMaker
{
class SigScaler :
public ISigInput
{
public:
SigScaler();
SigScaler(ISigInput * output);
SigScaler(int16_t m_256, int16_t c);
SigScaler(int16_t m_256, int16_t c, ISigInput * output);
void configOutput(ISigInput * output);
void configLinearScale(int16_t m_256, int16_t c);
void configLinearScale(int32_t fromMin, int32_t fromMax, int32_t toMin, int32_t toMax);
void writeValue(int32_t value);
private:
ISigInput * output;
int32_t m;
int16_t c;
uint8_t rightShiftQuota;
const static uint32_t int16_max = 32767;
const static uint32_t int32_max = 2147483647;
const static uint32_t uint16_max = 0xffff;
};
}
#endif