mirror of
https://github.com/RGBCube/serenity
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4941cffdd0
This is a tangly commit and it fixes all the bugs that a plain move would have caused (i.e. we need to touch other logic which had wrong assumptions).
68 lines
1.8 KiB
C++
68 lines
1.8 KiB
C++
/*
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* Copyright (c) 2021-2022, kleines Filmröllchen <filmroellchen@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include "Keyboard.h"
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#include "Music.h"
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#include <AK/Error.h>
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#include <AK/NumericLimits.h>
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namespace DSP {
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void Keyboard::set_keyboard_note(u8 pitch, Keyboard::Switch note_switch)
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{
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VERIFY(pitch < note_frequencies.size());
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if (note_switch == Switch::Off) {
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m_pressed_notes[pitch] = {};
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return;
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}
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auto fake_note = RollNote {
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.on_sample = m_transport->time(),
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.off_sample = NumericLimits<u32>::max(),
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.pitch = pitch,
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.velocity = NumericLimits<i8>::max(),
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};
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m_pressed_notes[pitch] = fake_note;
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}
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void Keyboard::set_keyboard_note_in_active_octave(i8 octave_offset, Switch note_switch)
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{
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u8 real_note = octave_offset + (m_virtual_keyboard_octave - 1) * notes_per_octave;
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set_keyboard_note(real_note, note_switch);
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}
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void Keyboard::change_virtual_keyboard_octave(Direction direction)
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{
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if (direction == Direction::Up) {
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if (m_virtual_keyboard_octave < octave_max)
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++m_virtual_keyboard_octave;
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} else {
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if (m_virtual_keyboard_octave > octave_min)
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--m_virtual_keyboard_octave;
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}
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}
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ErrorOr<void> Keyboard::set_virtual_keyboard_octave(u8 octave)
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{
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if (octave <= octave_max && octave >= octave_min) {
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m_virtual_keyboard_octave = octave;
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return {};
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}
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return Error::from_string_literal("Octave out of range");
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}
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bool Keyboard::is_pressed(u8 pitch) const
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{
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return m_pressed_notes[pitch].has_value() && m_pressed_notes[pitch]->is_playing(m_transport->time());
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}
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bool Keyboard::is_pressed_in_active_octave(i8 octave_offset) const
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{
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return is_pressed(octave_offset + virtual_keyboard_octave_base());
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}
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}
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