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Libraries: Add LibDSP

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LibDSP is a library for digital signal processing, and is primarily
intended to support the future DAW version of Piano.
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kleines Filmröllchen 2021-08-27 16:18:11 +02:00 • committed by Ali Mohammad Pur
parent 8f4b577405
commit a749b16674
14 changed files with 829 additions and 0 deletions
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44
Userland/Libraries/LibDSP/Transport.h Normal file
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/*
* Copyright (c) 2021, kleines Filmröllchen <malu.bertsch@gmail.com>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include "Music.h"
#include <AK/Types.h>
#include <LibCore/Object.h>
namespace LibDSP {
// The DAW-wide timekeeper and synchronizer
class Transport final : public Core::Object {
C_OBJECT(Transport)
public:
Transport(u16 beats_per_minute, u8 beats_per_measure, u32 sample_rate)
: m_beats_per_minute(beats_per_minute)
, m_beats_per_measure(beats_per_measure)
, m_sample_rate(sample_rate)
{
}
Transport(u16 beats_per_minute, u8 beats_per_measure)
: Transport(beats_per_minute, beats_per_measure, 44100)
{
}
u32 const& time() const { return m_time; }
u16 beats_per_minute() const { return m_beats_per_minute; }
double current_second() const { return m_time / m_sample_rate; }
double samples_per_measure() const { return (1.0 / m_beats_per_minute) * 60.0 * m_sample_rate; }
double sample_rate() const { return m_sample_rate; }
double current_measure() const { return m_time / samples_per_measure(); }
private:
u32 m_time { 0 };
u16 const m_beats_per_minute { 0 };
u8 const m_beats_per_measure { 0 };
u32 const m_sample_rate;
};
}