mirror of
https://github.com/LMMS/lmms.git
synced 2026-04-02 05:16:40 -04:00
828cefb4ea
* remove typeInfo struct from lmms_basics.h * Code review Co-authored-by: saker <sakertooth@gmail.com> * converted epsilon to a constant * renamed to approximatelyEqual and moved to top --------- Co-authored-by: saker <sakertooth@gmail.com>
112 lines
3.5 KiB
C++
112 lines
3.5 KiB
C++
/*
|
|
* lmms_constants.h - defines system constants
|
|
*
|
|
* Copyright (c) 2006 Danny McRae <khjklujn/at/users.sourceforge.net>
|
|
*
|
|
* This file is part of LMMS - https://lmms.io
|
|
*
|
|
* 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 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 (see COPYING); if not, write to the
|
|
* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
|
|
* Boston, MA 02110-1301 USA.
|
|
*
|
|
*/
|
|
|
|
#ifndef LMMS_CONSTANTS_H
|
|
#define LMMS_CONSTANTS_H
|
|
|
|
namespace lmms
|
|
{
|
|
|
|
|
|
constexpr long double LD_PI = 3.14159265358979323846264338327950288419716939937510;
|
|
constexpr long double LD_2PI = LD_PI * 2.0;
|
|
constexpr long double LD_PI_2 = LD_PI * 0.5;
|
|
constexpr long double LD_PI_R = 1.0 / LD_PI;
|
|
constexpr long double LD_PI_SQR = LD_PI * LD_PI;
|
|
constexpr long double LD_E = 2.71828182845904523536028747135266249775724709369995;
|
|
constexpr long double LD_E_R = 1.0 / LD_E;
|
|
constexpr long double LD_SQRT_2 = 1.41421356237309504880168872420969807856967187537695;
|
|
|
|
constexpr double D_PI = (double) LD_PI;
|
|
constexpr double D_2PI = (double) LD_2PI;
|
|
constexpr double D_PI_2 = (double) LD_PI_2;
|
|
constexpr double D_PI_R = (double) LD_PI_R;
|
|
constexpr double D_PI_SQR = (double) LD_PI_SQR;
|
|
constexpr double D_E = (double) LD_E;
|
|
constexpr double D_E_R = (double) LD_E_R;
|
|
constexpr double D_SQRT_2 = (double) LD_SQRT_2;
|
|
|
|
constexpr float F_PI = (float) LD_PI;
|
|
constexpr float F_2PI = (float) LD_2PI;
|
|
constexpr float F_PI_2 = (float) LD_PI_2;
|
|
constexpr float F_PI_R = (float) LD_PI_R;
|
|
constexpr float F_PI_SQR = (float) LD_PI_SQR;
|
|
constexpr float F_E = (float) LD_E;
|
|
constexpr float F_E_R = (float) LD_E_R;
|
|
constexpr float F_SQRT_2 = (float) LD_SQRT_2;
|
|
|
|
constexpr float F_EPSILON = 1.0e-10f; // 10^-10
|
|
|
|
// Microtuner
|
|
constexpr unsigned int MaxScaleCount = 10; //!< number of scales per project
|
|
constexpr unsigned int MaxKeymapCount = 10; //!< number of keyboard mappings per project
|
|
|
|
// Frequency ranges (in Hz).
|
|
// Arbitrary low limit for logarithmic frequency scale; >1 Hz.
|
|
constexpr int LOWEST_LOG_FREQ = 5;
|
|
|
|
// Full range is defined by LOWEST_LOG_FREQ and current sample rate.
|
|
enum class FrequencyRange
|
|
{
|
|
Full = 0,
|
|
Audible,
|
|
Bass,
|
|
Mids,
|
|
High
|
|
};
|
|
|
|
constexpr int FRANGE_AUDIBLE_START = 20;
|
|
constexpr int FRANGE_AUDIBLE_END = 20000;
|
|
constexpr int FRANGE_BASS_START = 20;
|
|
constexpr int FRANGE_BASS_END = 300;
|
|
constexpr int FRANGE_MIDS_START = 200;
|
|
constexpr int FRANGE_MIDS_END = 5000;
|
|
constexpr int FRANGE_HIGH_START = 4000;
|
|
constexpr int FRANGE_HIGH_END = 20000;
|
|
|
|
// Amplitude ranges (in dBFS).
|
|
// Reference: full scale sine wave (-1.0 to 1.0) is 0 dB.
|
|
// Doubling or halving the amplitude produces 3 dB difference.
|
|
enum class AmplitudeRange
|
|
{
|
|
Extended = 0,
|
|
Audible,
|
|
Loud,
|
|
Silent
|
|
};
|
|
|
|
constexpr int ARANGE_EXTENDED_START = -80;
|
|
constexpr int ARANGE_EXTENDED_END = 20;
|
|
constexpr int ARANGE_AUDIBLE_START = -50;
|
|
constexpr int ARANGE_AUDIBLE_END = 0;
|
|
constexpr int ARANGE_LOUD_START = -30;
|
|
constexpr int ARANGE_LOUD_END = 0;
|
|
constexpr int ARANGE_SILENT_START = -60;
|
|
constexpr int ARANGE_SILENT_END = -10;
|
|
|
|
|
|
} // namespace lmms
|
|
|
|
#endif // LMMS_CONSTANTS_H
|