Pxdct — Discrete Cosine and Sine Transform Factory

Pxdct is the main entry point for creating optimized DCT (Discrete Cosine Transform) and DST (Discrete Sine Transform) executors.
It provides a unified API for constructing fast, in-place transform executors using either single (f32) or * double (f64)* precision.

All executors implement the [PxdctExecutor] trait and can be used to perform forward or inverse transforms directly on a mutable data slice.

✨ Features

• Supports DCT-II, DCT-III, DST-II, and DST-III
• Works with both f32 and f64

🧱 Example

use pxdct::Pxdct;
use pxdct::PxdctExecutor;

fn main() -> Result<(), Box<dyn std::error::Error>> {
    let mut data = vec![1.0f32, 2.0, 3.0, 4.0];

    // Create a DCT-II executor for f32
    let dct2 = Pxdct::make_dct2_f32(data.len())?;
    dct2.execute(&mut data)?;

    println!("Transformed data: {:?}", data);
    Ok(())
}

This project is licensed under either of

• BSD-3-Clause License (see LICENSE)
• Apache License, Version 2.0 (see LICENSE)

at your option.