diff options
Diffstat (limited to 'klangfarb/main.gd')
| -rw-r--r-- | klangfarb/main.gd | 24 |
1 files changed, 18 insertions, 6 deletions
diff --git a/klangfarb/main.gd b/klangfarb/main.gd index 82f8ce9..fb29c8c 100644 --- a/klangfarb/main.gd +++ b/klangfarb/main.gd @@ -1,22 +1,34 @@ extends AudioStreamPlayer -var playback: AudioStreamPlayback = null +# controllable frequency interface +export(float, 20, 8000, 10) var freq = 440.0 + +# load the GDNative script connected to the rust lib var SineWave = preload("res://SineWave.gdns") +# make an instance of our one "class" in rust lib var wave = SineWave.new() -var freq = 440.0 + +# initialize the Godot stream we fill up with samples +var playback: AudioStreamPlayback = null func _fill_buffer() -> void: + # get count of Frames (sample, sample) available in stream var to_fill = playback.get_frames_available() - print(to_fill) if to_fill > 0: + # ask Rust to generate N frames at freq + # Array<Vector2> gets pushed to the + # playback stream buffer playback.push_buffer(wave.frames(freq, to_fill)) func _process(_delta): - _fill_buffer() + _fill_buffer() func _ready() -> void: - self.stream.mix_rate = freq * 256 - wave.set_sample_rate(freq * 256) + # ensure Godot/Sine have the same sample rate + wave.set_sample_rate(self.stream.mix_rate) + # get our AudioStreamPlayback object playback = self.get_stream_playback() + # prefill the stream's sample buffer (which feeds DAC) _fill_buffer() + # start the audio self.play() |