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sampler: replace red x with record instruction

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🪞👃🪞 2025-05-11 01:36:14 +03:00
parent b9c101081b
commit ee2efd1c26
1 changed files with 47 additions and 39 deletions
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86
crates/device/src/sampler/sampler_view.rs
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@ -137,45 +137,53 @@ fn draw_viewer (sample: Option<&Arc<RwLock<Sample>>>) -> impl Content<TuiOut> +
ThunkRender::new(move|to: &mut TuiOut|{
let [x, y, width, height] = to.area();
let area = Rect { x, y, width, height };
let (x_bounds, y_bounds, lines): ([f64;2], [f64;2], Vec<Line>) =
if let Some(sample) = &sample {
let sample = sample.read().unwrap();
let start = sample.start as f64;
let end = sample.end as f64;
let length = end - start;
let step = length / width as f64;
let mut t = start;
let mut lines = vec![];
while t < end {
let chunk = &sample.channels[0][t as usize..((t + step) as usize).min(sample.end)];
let total: f32 = chunk.iter().map(|x|x.abs()).sum();
let count = chunk.len() as f32;
let meter = 10. * (total / count).log10();
let x = t as f64;
let y = meter as f64;
lines.push(Line::new(x, min_db, x, y, Color::Green));
t += step / 2.;
}
(
[sample.start as f64, sample.end as f64],
[min_db, 0.],
lines
)
} else {
(
[0.0, width as f64],
[0.0, height as f64],
vec![
Line::new(0.0, 0.0, width as f64, height as f64, Color::Red),
Line::new(width as f64, 0.0, 0.0, height as f64, Color::Red),
]
)
};
Canvas::default()
.x_bounds(x_bounds)
.y_bounds(y_bounds)
.paint(|ctx| { for line in lines.iter() { ctx.draw(line) } })
.render(area, &mut to.buffer);
if let Some(sample) = &sample {
let sample = sample.read().unwrap();
let start = sample.start as f64;
let end = sample.end as f64;
let length = end - start;
let step = length / width as f64;
let mut t = start;
let mut lines = vec![];
while t < end {
let chunk = &sample.channels[0][t as usize..((t + step) as usize).min(sample.end)];
let total: f32 = chunk.iter().map(|x|x.abs()).sum();
let count = chunk.len() as f32;
let meter = 10. * (total / count).log10();
let x = t as f64;
let y = meter as f64;
lines.push(Line::new(x, min_db, x, y, Color::Green));
t += step / 2.;
}
Canvas::default()
.x_bounds([sample.start as f64, sample.end as f64])
.y_bounds([min_db, 0.])
.paint(|ctx| {
for line in lines.iter() {
ctx.draw(line);
}
//FIXME: proportions
//let text = "press record to finish sampling";
//ctx.print(
//(width - text.len() as u16) as f64 / 2.0,
//height as f64 / 2.0,
//text.red()
//);
}).render(area, &mut to.buffer);
} else {
Canvas::default()
.x_bounds([0.0, width as f64])
.y_bounds([0.0, height as f64])
.paint(|ctx| {
let text = "press record to begin sampling";
ctx.print(
(width - text.len() as u16) as f64 / 2.0,
height as f64 / 2.0,
text.red()
);
})
.render(area, &mut to.buffer);
}
})
}