alemi/scope-tui
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feat: allow to set sample rate, show framerate

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fps counter implementation is kind of scuffed but does the job
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əlemi 2022-12-25 21:55:52 +01:00
parent a25d9c3590
commit d98f04ae1f
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GPG key ID: BBCBFE5D7244634E
1 changed files with 20 additions and 4 deletions
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24
src/main.rs
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@ -1,7 +1,7 @@
mod parser;
mod app;
use std::{io::{self, ErrorKind}, time::Duration};
use std::{io::{self, ErrorKind}, time::{Duration, SystemTime}};
use tui::{
backend::{CrosstermBackend, Backend},
widgets::{Block, Chart, Axis, Dataset, GraphType},
@ -38,6 +38,10 @@ struct Args {
#[arg(short, long, default_value_t = 20000)]
range: u32,
/// Sample rate to use
#[arg(long, default_value_t = 44100)]
sample_rate: u32,
/// Don't draw reference line
#[arg(long, default_value_t = false)]
no_reference: bool,
@ -121,7 +125,7 @@ fn run_app<T : Backend>(args: Args, terminal: &mut Terminal<T>) -> Result<(), io
let spec = Spec {
format: Format::S16NE,
channels: 2,
rate: 44100,
rate: args.sample_rate,
};
assert!(spec.is_valid());
@ -151,6 +155,9 @@ fn run_app<T : Backend>(args: Args, terminal: &mut Terminal<T>) -> Result<(), io
},
};
let mut fps = 0;
let mut framerate = 0;
let mut last_poll = SystemTime::now();
loop {
match s.read(&mut buffer) {
@ -196,6 +203,15 @@ fn run_app<T : Backend>(args: Args, terminal: &mut Terminal<T>) -> Result<(), io
(left, right) = fmt.oscilloscope(&mut buffer);
datasets.push(data_set("R", &right, cfg.marker_type, cfg.graph_type(), cfg.secondary_color));
datasets.push(data_set("L", &left, cfg.marker_type, cfg.graph_type(), cfg.primary_color));
fps += 1;
if let Ok(d) = last_poll.elapsed() {
if d.as_secs() >= 1 {
framerate = fps;
fps = 0;
last_poll = SystemTime::now();
}
}
terminal.draw(|f| {
@ -204,10 +220,10 @@ fn run_app<T : Backend>(args: Args, terminal: &mut Terminal<T>) -> Result<(), io
.block(Block::default().title(
Span::styled(
format!(
"TUI {} <me@alemi.dev> -- {} mode -- range {} -- {} samples",
"TUI {} <me@alemi.dev> -- {} mode -- range {} -- {} samples -- {:.1} kHz -- {} fps",
if cfg.vectorscope() { "Vectorscope" } else { "Oscilloscope" },
if cfg.scatter() { "scatter" } else { "line" },
cfg.scale(), cfg.width(),
cfg.scale(), cfg.width(), args.sample_rate as f32 / 1000.0, framerate,
),
Style::default().add_modifier(Modifier::BOLD).fg(Color::Yellow))
))