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| 1 | +mod dsp_lenses; |
| 2 | + |
| 3 | +use scamble::dsp::{Dsp, Parameter, ParameterType, interop}; |
| 4 | +use scamble::fmod::dsp::DspInstance; |
| 5 | +use scamble::fmod::system::System; |
| 6 | +use scamble::result::FmResultTrait; |
| 7 | + |
| 8 | +use vizia::prelude::*; |
| 9 | + |
| 10 | +type It = scamble::effects::fantasy::Fantasy; |
| 11 | + |
| 12 | +#[derive(Lens)] |
| 13 | +struct AppModel { |
| 14 | + system: System, |
| 15 | + dsp: Option<DspInstance>, |
| 16 | +} |
| 17 | + |
| 18 | +impl Model for AppModel { |
| 19 | + fn event(&mut self, cx: &mut EventContext, event: &mut Event) { |
| 20 | + event.map::<AppEvent, _>(|event, _meta| match event { |
| 21 | + AppEvent::SetParamFloat(idx, v) => { |
| 22 | + if let Some(instance) = self.dsp { |
| 23 | + instance.set_float_parameter(*idx, *v).unwrap() |
| 24 | + } |
| 25 | + } |
| 26 | + AppEvent::SetParamBool(idx, v) => { |
| 27 | + if let Some(instance) = self.dsp { |
| 28 | + instance.set_bool_parameter(*idx, *v).unwrap() |
| 29 | + } |
| 30 | + } |
| 31 | + AppEvent::SetParamInt(idx, v) => { |
| 32 | + if let Some(instance) = self.dsp { |
| 33 | + instance.set_int_parameter(*idx, *v).unwrap() |
| 34 | + } |
| 35 | + } |
| 36 | + AppEvent::ToggleParamBool(idx) => { |
| 37 | + if let Some(instance) = self.dsp { |
| 38 | + instance |
| 39 | + .set_bool_parameter(*idx, !instance.get_bool_parameter(*idx).unwrap()) |
| 40 | + .unwrap() |
| 41 | + } |
| 42 | + } |
| 43 | + }); |
| 44 | + } |
| 45 | +} |
| 46 | + |
| 47 | +enum AppEvent { |
| 48 | + SetParamFloat(usize, f32), |
| 49 | + SetParamBool(usize, bool), |
| 50 | + ToggleParamBool(usize), |
| 51 | + SetParamInt(usize, i32), |
| 52 | +} |
| 53 | + |
| 54 | +fn main() -> Result<(), ApplicationError> { |
| 55 | + let system = System::create().fm_unwrap(); |
| 56 | + let desc = interop::into_desc::<It>(); |
| 57 | + let dsp = system.create_dsp_from_description(&desc).fm_unwrap(); |
| 58 | + let sound = system.create_sound("./sound.mp3").fm_unwrap(); |
| 59 | + let channel = system.play_sound(sound, None, true).fm_unwrap(); |
| 60 | + channel.add_dsp(0, &dsp).fm_unwrap(); |
| 61 | + channel.set_paused(false).fm_unwrap(); |
| 62 | + |
| 63 | + let model = AppModel { |
| 64 | + system, |
| 65 | + dsp: Some(dsp), |
| 66 | + }; |
| 67 | + Application::new(|cx| { |
| 68 | + model.build(cx); |
| 69 | + view_dsp::<It>(cx); |
| 70 | + }) |
| 71 | + .title("Scamble Tester") |
| 72 | + .on_idle(move |cx| system.update().unwrap()) |
| 73 | + .run() |
| 74 | +} |
| 75 | + |
| 76 | +fn view_dsp<D: Dsp>(cx: &mut Context) { |
| 77 | + HStack::new(cx, |cx| { |
| 78 | + for (idx, parameter) in D::parameters().iter().enumerate() { |
| 79 | + view_param(cx, idx, parameter); |
| 80 | + } |
| 81 | + }) |
| 82 | + .gap(Pixels(20.)) |
| 83 | + .alignment(Alignment::Center); |
| 84 | +} |
| 85 | + |
| 86 | +fn view_param<D: Dsp>(cx: &mut Context, idx: usize, parameter: &Parameter<D>) { |
| 87 | + VStack::new(cx, |cx| { |
| 88 | + Label::new(cx, parameter.name); |
| 89 | + |
| 90 | + match parameter.ty { |
| 91 | + ParameterType::Float { |
| 92 | + min, max, default, .. |
| 93 | + } => { |
| 94 | + Knob::new( |
| 95 | + cx, |
| 96 | + norm(default, min, max), |
| 97 | + read_float_lens(idx, default).map(move |it| norm(*it, min, max)), |
| 98 | + false, |
| 99 | + ) |
| 100 | + .on_change(move |cx, value| cx.emit(AppEvent::SetParamFloat(idx, value))); |
| 101 | + |
| 102 | + Label::new(cx, read_float_lens(idx, default)); |
| 103 | + } |
| 104 | + ParameterType::Bool { default, names, .. } => { |
| 105 | + ToggleButton::new( |
| 106 | + cx, |
| 107 | + AppModel::dsp.map(move |dsp| { |
| 108 | + dsp.and_then(|it| it.get_bool_parameter(idx).ok()) |
| 109 | + .unwrap_or(default) |
| 110 | + }), |
| 111 | + move |cx| { |
| 112 | + Label::new( |
| 113 | + cx, |
| 114 | + read_bool_lens(idx, default).map(move |it| { |
| 115 | + if let Some((on, off)) = names { |
| 116 | + if *it { on } else { off } |
| 117 | + } else { |
| 118 | + if *it { "ON" } else { "OFF" } |
| 119 | + } |
| 120 | + }), |
| 121 | + ) |
| 122 | + }, |
| 123 | + ) |
| 124 | + .on_toggle(move |cx| { |
| 125 | + cx.emit(AppEvent::ToggleParamBool(idx)); |
| 126 | + }); |
| 127 | + } |
| 128 | + ParameterType::Int { |
| 129 | + min, max, default, .. |
| 130 | + } => { |
| 131 | + Slider::new(cx, read_int_lens(idx, default).map(|it| *it as f32)) |
| 132 | + .range(min as f32..max as f32) |
| 133 | + .on_change(move |cx, value| { |
| 134 | + cx.emit(AppEvent::SetParamInt(idx, value as i32)); |
| 135 | + }); |
| 136 | + |
| 137 | + Label::new(cx, read_int_lens(idx, default)); |
| 138 | + } |
| 139 | + _ => {} |
| 140 | + }; |
| 141 | + }) |
| 142 | + .gap(Pixels(10.)) |
| 143 | + .alignment(Alignment::Center); |
| 144 | +} |
| 145 | + |
| 146 | +fn read_float_lens(idx: usize, default: f32) -> impl Lens<Target = f32> { |
| 147 | + AppModel::dsp.map(move |dsp| { |
| 148 | + dsp.and_then(|it| it.get_float_parameter(idx).ok()) |
| 149 | + .unwrap_or(default) |
| 150 | + }) |
| 151 | +} |
| 152 | + |
| 153 | +fn read_bool_lens(idx: usize, default: bool) -> impl Lens<Target = bool> { |
| 154 | + AppModel::dsp.map(move |dsp| { |
| 155 | + dsp.and_then(|it| it.get_bool_parameter(idx).ok()) |
| 156 | + .unwrap_or(default) |
| 157 | + }) |
| 158 | +} |
| 159 | + |
| 160 | +fn read_int_lens(idx: usize, default: i32) -> impl Lens<Target = i32> { |
| 161 | + AppModel::dsp.map(move |dsp| { |
| 162 | + dsp.and_then(|it| it.get_int_parameter(idx).ok()) |
| 163 | + .unwrap_or(default) |
| 164 | + }) |
| 165 | +} |
| 166 | + |
| 167 | +fn norm(v: f32, min: f32, max: f32) -> f32 { |
| 168 | + (v - min) / (max - min) |
| 169 | +} |
| 170 | + |
| 171 | +fn unnorm(p: f32, min: f32, max: f32) -> f32 { |
| 172 | + p * (max - min) + min |
| 173 | +} |
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