break up into crates again

device/meter.rs

@@ -0,0 +1,85 @@
+use crate::*;
+
+#[derive(Debug, Default)]
+pub enum MeteringMode {
+    #[default]
+    Rms,
+    Log10,
+}
+
+#[derive(Debug, Default, Clone)]
+pub struct Log10Meter(pub f32);
+impl Layout<TuiOut> for Log10Meter {}
+impl Draw<TuiOut> for Log10Meter {
+    fn draw (&self, to: &mut TuiOut) {
+        let [x, y, w, h] = to.area();
+        let signal = 100.0 - f32::max(0.0, f32::min(100.0, self.0.abs()));
+        let v = (signal * h as f32 / 100.0).ceil() as u16;
+        let y2 = y + h;
+        //to.blit(&format!("\r{v} {} {signal}", self.0), x * 20, y, None);
+        for y in y..(y + v) {
+            for x in x..(x + w) {
+                to.blit(&"▌", x, y2 - y, Some(Style::default().green()));
+            }
+        }
+    }
+}
+
+pub fn to_log10 (samples: &[f32]) -> f32 {
+    let total: f32 = samples.iter().map(|x|x.abs()).sum();
+    let count = samples.len() as f32;
+    10. * (total / count).log10()
+}
+
+#[derive(Debug, Default, Clone)]
+pub struct RmsMeter(pub f32);
+impl Layout<TuiOut> for RmsMeter {}
+impl Draw<TuiOut> for RmsMeter {
+    fn draw (&self, to: &mut TuiOut) {
+        let [x, y, w, h] = to.area();
+        let signal = f32::max(0.0, f32::min(100.0, self.0.abs()));
+        let v = (signal * h as f32).ceil() as u16;
+        let y2 = y + h;
+        //to.blit(&format!("\r{v} {} {signal}", self.0), x * 30, y, Some(Style::default()));
+        for y in y..(y + v) {
+            for x in x..(x + w) {
+                to.blit(&"▌", x, y2.saturating_sub(y), Some(Style::default().green()));
+            }
+        }
+    }
+}
+
+pub fn to_rms (samples: &[f32]) -> f32 {
+    let sum = samples.iter()
+        .map(|s|*s)
+        .reduce(|sum, sample|sum + sample.abs())
+        .unwrap_or(0.0);
+    (sum / samples.len() as f32).sqrt()
+}
+
+pub fn view_meter <'a> (label: &'a str, value: f32) -> impl Content<TuiOut> + 'a {
+    col!(
+        FieldH(ItemTheme::G[128], label, format!("{:>+9.3}", value)),
+        Fixed::XY(if value >= 0.0 { 13 }
+            else if value >= -1.0 { 12 }
+            else if value >= -2.0 { 11 }
+            else if value >= -3.0 { 10 }
+            else if value >= -4.0 { 9  }
+            else if value >= -6.0 { 8  }
+            else if value >= -9.0 { 7  }
+            else if value >= -12.0 { 6 }
+            else if value >= -15.0 { 5 }
+            else if value >= -20.0 { 4 }
+            else if value >= -25.0 { 3 }
+            else if value >= -30.0 { 2 }
+            else if value >= -40.0 { 1 }
+            else { 0 }, 1, Tui::bg(if value >= 0.0  { Red }
+                else if value >= -3.0 { Yellow }
+                else { Green }, ())))
+}
+
+pub fn view_meters (values: &[f32;2]) -> impl Content<TuiOut> + use<'_> {
+    let left  = format!("L/{:>+9.3}", values[0]);
+    let right = format!("R/{:>+9.3}", values[1]);
+    Bsp::s(left, right)
+}