Update and added ReadMe
This commit is contained in:
parent
f45a9cf312
commit
a51b69ad7c
101
Cargo.lock
generated
101
Cargo.lock
generated
@ -66,9 +66,9 @@ checksum = "cdb031dd78e28731d87d56cc8ffef4a8f36ca26c38fe2de700543e627f8a464a"
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15
README.md
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15
README.md
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# Frequency detector written in rust
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This project started out as a simple humming detector written in rust but, ended up becoming a frequency analyser that uses a Fourier transform to obtain the frequencies of the sound that is being recorded.
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But the main goals of the project were still accomplished:
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- Improve rust skills
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- Learn how to record audio using rust (in Linux)
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- Learn the mathematical bases of a Fourier transform
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#How to run
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```bash
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cargo run
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```
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690
run.txt
690
run.txt
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Audio Test:
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Geting audio input:
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Got config: StreamConfig { channels: 1, sample_rate: SampleRate(384000), buffer_size: Default }
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Starting len: 0
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center: NaN
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||||
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|
||||
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|
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||||
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||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
||||
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|
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|
||||
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
||||
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|
||||
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|
||||
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|
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|
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|
||||
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|
||||
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|
||||
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|
||||
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
||||
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|
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|
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|
||||
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|
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|
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
center: NaN
|
||||
130
src/main.rs
130
src/main.rs
@ -1,10 +1,10 @@
|
||||
use cpal::traits::{HostTrait, DeviceTrait, StreamTrait};
|
||||
use cpal::traits::{DeviceTrait, HostTrait, StreamTrait};
|
||||
use cpal::StreamInstant;
|
||||
use std::{thread, time};
|
||||
use std::sync::{Arc, Mutex};
|
||||
use std::sync::mpsc;
|
||||
use num_complex::Complex;
|
||||
use image::{ImageBuffer, RgbImage};
|
||||
use num_complex::Complex;
|
||||
use std::sync::mpsc;
|
||||
use std::sync::{Arc, Mutex};
|
||||
use std::{thread, time};
|
||||
|
||||
#[derive(Debug)]
|
||||
struct MyRecData {
|
||||
@ -17,39 +17,26 @@ struct ProcessData {
|
||||
data: Vec<f32>,
|
||||
}
|
||||
|
||||
const IMAGEX: u32 = 500;
|
||||
const IMAGEY: u32 = 500;
|
||||
const IMAGEX: u32 = 200;
|
||||
const IMAGEY: u32 = 100;
|
||||
const STEP: f32 = 20.0;
|
||||
const START_FREC: f32 = 200.0;
|
||||
|
||||
fn generate_buffer() -> RgbImage {
|
||||
|
||||
let mut imgbuf: RgbImage = ImageBuffer::new(IMAGEX, IMAGEY);
|
||||
|
||||
for i in 0..IMAGEX {
|
||||
*imgbuf.get_pixel_mut(i, 250) = image::Rgb([255,255,255]);
|
||||
}
|
||||
|
||||
//imgbuf.save("test.png").unwrap();
|
||||
imgbuf
|
||||
ImageBuffer::new(IMAGEX, IMAGEY)
|
||||
}
|
||||
|
||||
fn process(p_data: ProcessData, x: u32) {
|
||||
let time = p_data.duration.as_nanos() as f32 / (10.0_f32).powf(9.0);
|
||||
|
||||
let mut sum: Complex<f32> = Complex::new(0.0, 0.0);
|
||||
|
||||
let test_frec = 440.0f32;
|
||||
|
||||
let data_size = p_data.data.len() as u32;
|
||||
let gragh_step = (data_size as f64 / (IMAGEX as f64 - 1.0f64)).floor() as u32;
|
||||
|
||||
println!("gs:{}", gragh_step);
|
||||
let gragh_step = 20 as u32;
|
||||
|
||||
let step = (time as f32 / data_size as f32) * gragh_step as f32;
|
||||
|
||||
let mut i: u32 = 0;
|
||||
let mut max = 0.0f64;
|
||||
|
||||
while i < data_size && i/gragh_step < IMAGEX - 1 {
|
||||
while i < data_size {
|
||||
if max < *p_data.data.get(i as usize).unwrap() as f64 {
|
||||
max = *p_data.data.get(i as usize).unwrap() as f64;
|
||||
}
|
||||
@ -60,29 +47,51 @@ fn process(p_data: ProcessData, x: u32) {
|
||||
|
||||
let mut img_buff: RgbImage = generate_buffer();
|
||||
|
||||
i = 0;
|
||||
let mut sum_vec: Vec<Complex<f32>> = vec![];
|
||||
|
||||
while i < data_size && i/gragh_step < IMAGEX - 1 {
|
||||
let y = (250.0f64 - (*p_data.data.get(i as usize).unwrap() as f64 * scale).floor()) as u32;
|
||||
let to_sum = Complex::from_polar(*p_data.data.get(i as usize).unwrap() as f32 * scale as f32, - 2.0 * std::f32::consts::PI * test_frec * ( i as f32/gragh_step as f32) * step);
|
||||
sum += to_sum;
|
||||
if y < 500 && y > 0 {
|
||||
*img_buff.get_pixel_mut((i/gragh_step) as u32, y ) = image::Rgb([0, 255, 255]);
|
||||
for j in 0..(IMAGEX + 1) {
|
||||
let test_frec: f32 = j as f32 * STEP + START_FREC;
|
||||
i = 0;
|
||||
while i < data_size {
|
||||
let to_sum = Complex::from_polar(
|
||||
*p_data.data.get(i as usize).unwrap() as f32 * scale as f32,
|
||||
-2.0 * std::f32::consts::PI * test_frec * (i as f32 / gragh_step as f32) * step,
|
||||
);
|
||||
if sum_vec.get(j as usize).is_none() {
|
||||
sum_vec.push(to_sum);
|
||||
} else {
|
||||
let a = *sum_vec.get(j as usize).unwrap();
|
||||
let _ = std::mem::replace(&mut sum_vec[j as usize], a + to_sum);
|
||||
}
|
||||
i += gragh_step;
|
||||
}
|
||||
// sum = sum.scale(1.0f32 / (data_size as f32 /gragh_step as f32));
|
||||
if !sum.re.is_nan() && !sum.im.is_nan() {
|
||||
println!("center: {}", (sum.im.powf(2.0) + sum.im.powf(2.0)).sqrt() )
|
||||
}
|
||||
let x1 = sum.re + (IMAGEX/2) as f32;
|
||||
let y1 = sum.im + 250.0;
|
||||
if x1 > 0.0 && x1 < IMAGEX as f32 && y1 > 0.0 && y1 < 500.0 {
|
||||
*img_buff.get_pixel_mut( x1 as u32, y1 as u32 ) = image::Rgb([255, 255, 255]);
|
||||
//println!("center");
|
||||
let mut max = 0.0f32;
|
||||
let mut average = 0.0f32;
|
||||
let mut possible = 0.0f32;
|
||||
for i in 0..IMAGEX {
|
||||
let v: Complex<f32> = *sum_vec.get(i as usize).unwrap();
|
||||
if !v.is_nan() {
|
||||
let v = (v.re.powf(2.0) + v.im.powf(2.0)).sqrt();
|
||||
if max < v {
|
||||
max = v;
|
||||
possible = START_FREC + STEP * i as f32;
|
||||
}
|
||||
average += v;
|
||||
}
|
||||
}
|
||||
average = IMAGEY as f32 - (average / IMAGEX as f32) / max * (IMAGEY - 10) as f32;
|
||||
for i in 0..IMAGEX {
|
||||
let v: Complex<f32> = *sum_vec.get(i as usize).unwrap();
|
||||
if !v.is_nan() {
|
||||
let j = IMAGEY as f32
|
||||
- ((v.re.powf(2.0) + v.im.powf(2.0)).sqrt() / max) * (IMAGEY - 10) as f32;
|
||||
*img_buff.get_pixel_mut(i as u32, j.floor() as u32) = image::Rgb([255, 0, 255]);
|
||||
*img_buff.get_pixel_mut(i as u32, average as u32) = image::Rgb([255, 0, 0]);
|
||||
}
|
||||
}
|
||||
|
||||
println!("Processed {}", x);
|
||||
println!("Processed {} {}", x, possible);
|
||||
|
||||
img_buff.save(format!("run/process{}.png", x)).unwrap();
|
||||
}
|
||||
@ -94,7 +103,6 @@ fn process(p_data: ProcessData, x: u32) {
|
||||
//}
|
||||
|
||||
fn main() {
|
||||
|
||||
println!("Audio Test:");
|
||||
|
||||
let host = cpal::default_host();
|
||||
@ -106,23 +114,38 @@ fn main() {
|
||||
|
||||
println!("Geting audio input:");
|
||||
|
||||
let device = host.default_input_device().expect("no output device available!");
|
||||
let device = host
|
||||
.default_input_device()
|
||||
.expect("no output device available!");
|
||||
|
||||
let mut supported_configs_range = device.supported_input_configs().expect("Error while geting the configs");
|
||||
let supported_config = supported_configs_range.next().expect("no supported config").with_max_sample_rate().into();
|
||||
let mut supported_configs_range = device
|
||||
.supported_input_configs()
|
||||
.expect("Error while geting the configs");
|
||||
let supported_config = supported_configs_range
|
||||
.next()
|
||||
.expect("no supported config")
|
||||
.with_max_sample_rate()
|
||||
.into();
|
||||
|
||||
println!("Got config: {:?}", supported_config);
|
||||
|
||||
let stream = device.build_input_stream(&supported_config,
|
||||
let stream = device
|
||||
.build_input_stream(
|
||||
&supported_config,
|
||||
move |data: &[f32], input_info: &cpal::InputCallbackInfo| {
|
||||
// println!("Data:\n Input info:{:?}", input_info.timestamp().capture);
|
||||
let mdata = MyRecData {instant: input_info.timestamp().capture, data: data.to_vec()};
|
||||
let mdata = MyRecData {
|
||||
instant: input_info.timestamp().capture,
|
||||
data: data.to_vec(),
|
||||
};
|
||||
rec_data_c.lock().ok().unwrap().insert(0, mdata);
|
||||
()
|
||||
},
|
||||
move |err| {
|
||||
println!("Error: {:?}", err);
|
||||
}).expect("Failed to build stream");
|
||||
},
|
||||
)
|
||||
.expect("Failed to build stream");
|
||||
|
||||
stream.play().expect("faild to play");
|
||||
|
||||
@ -165,7 +188,13 @@ fn main() {
|
||||
last = Some(mdata.instant);
|
||||
} else {
|
||||
let instant = mdata.instant.duration_since(&last.unwrap()).unwrap();
|
||||
process(ProcessData {duration: instant, data: mdata.data}, x);
|
||||
process(
|
||||
ProcessData {
|
||||
duration: instant,
|
||||
data: mdata.data,
|
||||
},
|
||||
x,
|
||||
);
|
||||
last = Some(mdata.instant);
|
||||
// println!("time:{:?}", instant);
|
||||
}
|
||||
@ -174,12 +203,11 @@ fn main() {
|
||||
println!("Stoped processing");
|
||||
});
|
||||
|
||||
thread::sleep(time::Duration::from_secs(2));
|
||||
thread::sleep(time::Duration::from_secs(30));
|
||||
|
||||
stream.pause().expect("faild to close");
|
||||
|
||||
println!("stoping");
|
||||
m_t.send(false).ok();
|
||||
t.join().unwrap();
|
||||
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user