mirror of
https://github.com/portapack-mayhem/mayhem-firmware.git
synced 2024-12-23 16:37:43 +00:00
af448cf444
* Add credits * Persist audio, add volume to apps * Remove comment * Hack around apparent alignment problem
103 lines
2.4 KiB
C++
103 lines
2.4 KiB
C++
/*
|
|
* Copyright (C) 2014 Jared Boone, ShareBrained Technology, Inc.
|
|
*
|
|
* This file is part of PortaPack.
|
|
*
|
|
* 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 2, 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; see the file COPYING. If not, write to
|
|
* the Free Software Foundation, Inc., 51 Fvoranklin Street,
|
|
* Boston, MA 02110-1301, USA.
|
|
*/
|
|
|
|
#ifndef __VOLUME_H__
|
|
#define __VOLUME_H__
|
|
|
|
#include <cstdint>
|
|
#include "utility.hpp"
|
|
|
|
class volume_t {
|
|
public:
|
|
constexpr volume_t operator-() const {
|
|
return {-cb};
|
|
}
|
|
|
|
constexpr volume_t operator+(const volume_t& other) const {
|
|
return {cb + other.cb};
|
|
}
|
|
|
|
constexpr volume_t operator-(const volume_t& other) const {
|
|
return {cb - other.cb};
|
|
}
|
|
|
|
volume_t& operator+=(const volume_t& other) {
|
|
cb += other.cb;
|
|
return *this;
|
|
}
|
|
|
|
constexpr bool operator<(const volume_t& other) const {
|
|
return cb < other.cb;
|
|
}
|
|
|
|
constexpr bool operator>(const volume_t& other) const {
|
|
return cb > other.cb;
|
|
}
|
|
|
|
static constexpr volume_t centibel(const int cb) {
|
|
return {cb};
|
|
}
|
|
|
|
static constexpr volume_t decibel(const int db) {
|
|
return {db * 10};
|
|
}
|
|
|
|
int32_t centibel() const {
|
|
return cb;
|
|
}
|
|
|
|
int32_t decibel() const {
|
|
return cb / 10;
|
|
}
|
|
|
|
private:
|
|
int32_t cb;
|
|
|
|
constexpr volume_t(
|
|
const int cb)
|
|
: cb(cb) {
|
|
}
|
|
};
|
|
|
|
constexpr volume_t operator"" _cB(long double v) {
|
|
return volume_t::centibel(v);
|
|
}
|
|
|
|
constexpr volume_t operator"" _dB(long double v) {
|
|
return volume_t::centibel(v * 10);
|
|
}
|
|
|
|
struct volume_range_t {
|
|
volume_t min;
|
|
volume_t max;
|
|
|
|
volume_t limit(const volume_t value) const {
|
|
return clip(value, min, max);
|
|
}
|
|
|
|
volume_t normalize(const volume_t value) const {
|
|
/* Limit volume to specified range, and adjust minimum value to 0. */
|
|
return limit(value) - min;
|
|
}
|
|
};
|
|
|
|
#endif /*__VOLUME_H__*/
|