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Piano: Add sustain

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This commit is contained in:
William McPherson 2020-02-05 02:39:51 +11:00 • committed by Andreas Kling
parent 421a340572
commit 5990b3b2e6
5 changed files with 40 additions and 4 deletions
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6
Applications/Piano/AudioEngine.h
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@ -44,6 +44,7 @@ public:
int octave_base() const { return (m_octave - octave_min) * 12; }
int wave() const { return m_wave; }
int decay() const { return m_decay; }
int sustain() const { return m_sustain; }
int delay() const { return m_delay; }
int time() const { return m_time; }
int tick() const { return m_tick; }
@ -55,6 +56,7 @@ public:
void set_wave(int wave);
void set_wave(Direction);
void set_decay(int decay);
void set_sustain(int sustain);
void set_delay(int delay);
private:
@ -64,6 +66,8 @@ private:
double triangle(size_t note);
double noise() const;
void set_sustain_impl(int sustain);
FixedArray<Sample> m_front_buffer { sample_count };
FixedArray<Sample> m_back_buffer { sample_count };
FixedArray<Sample>* m_front_buffer_ptr { &m_front_buffer };
@ -79,6 +83,8 @@ private:
int m_wave { first_wave };
int m_decay;
double m_decay_step;
int m_sustain;
double m_sustain_level;
int m_delay { 0 };
int m_time { 0 };