wgc 1.0.2

An ergonomic Rust wrapper for Windows.Graphics.Capture API
Documentation 
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# wgc - Windows Graphics Capture Wrapper

[![Crates.io](https://img.shields.io/crates/v/wgc)](https://crates.io/crates/wgc)
[![Documentation](https://docs.rs/wgc/badge.svg)](https://docs.rs/wgc)
[![License](https://img.shields.io/crates/l/wgc)](https://github.com/atliac/wgc/blob/master/LICENSE)
[![Rust (Windows)](https://github.com/Atliac/wgc/actions/workflows/rust.yml/badge.svg?branch=master)](https://github.com/Atliac/wgc/actions/workflows/rust.yml)

A simple and ergonomic Rust wrapper for Windows.Graphics.Capture API, enabling screen/window capture on Windows 10/11.

**Realtime & AI-optimized** capture for ML and computer vision workflows.

## Features
- Realtime & AI-optimized: Capture any window or monitor at any resolution and resize in real-time using letterbox scaling. Ideal for ML pipelines, streaming, and computer vision applications.
- Ergonomic iterator-based API for capturing frames via the `Wgc` struct
- Interactive picker dialog for selecting windows or monitors to capture
- Configurable pixel formats (currently `RGBA8` and `BGRA8`, with more formats planned) via `WgcSettings`
- Automatic buffer recreation when capture resolution changes
- Frame size normalization with letterboxing for consistent output dimensions
- Optional `tracing` feature for debug logging
- Zero-copy frame access with efficient DirectX/Direct2D integration

## Requirements

- Windows 10 October 2018 Update (version 1809) or later
- Windows 11 (recommended)
- Rust 2024 edition

## Usage

Here's a basic example of how to capture frames:

```rust
use wgc::*;

fn main() -> anyhow::Result<()> {
    // Pick an item to capture (window or monitor)
    let item = new_item_with_picker(None)?;

    // Create the capture instance
    let wgc = Wgc::new(item.clone(), Default::default())?;

    // Iterate over captured frames
    for frame in wgc.take(1) {
        let frame = frame?;
        println!("Captured frame from {} with size {:?}",
                 item.clone().DisplayName()?,
                 frame.size()?);
        
        let frame_size = frame.size()?;
        let buffer:Vec<u8> = frame.read_pixels(frame_size)?;
    }
    Ok(())
}
```

## Examples

Check out the [examples](./examples/) directory for more detailed usage examples:

- [save_image](./examples/save_image.rs): Captures a screen item and saves it as an image file to disk.
- [show_image](./examples/show_image.rs): Captures a screen item and displays it in a window.
- [tutorial](./examples/tutorial.rs): Provides a comprehensive tutorial on wgc for those who wish to leverage most of its features.

## License

Licensed under either of

- Apache License, Version 2.0 ([LICENSE-APACHE](LICENSE-APACHE) or <http://www.apache.org/licenses/LICENSE-2.0>)
- MIT license ([LICENSE-MIT](LICENSE-MIT) or <http://opensource.org/licenses/MIT>)

at your option.

## Contribution

Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.