Module params 

Parameter types for image operations.

These structs describe what to do, not how to do it. They are the interface between the high-level operations module (which decides what images to create) and the backend (which does the actual pixel work). This separation allows swapping backends (e.g. for testing with a mock) without changing operation logic.

Types

• Quality — Lossy encoding quality (1–100, default 90). Clamped on construction.
• Sharpening — Unsharp-mask parameters (sigma + threshold) for thumbnail crispness.
• ResizeParams — Full specification for a resize: source, output path, target dimensions, quality.
• ThumbnailParams — Full specification for a thumbnail: source, output, crop dimensions, quality, optional sharpening.

Structs

Quality

Quality setting for lossy image encoding (1-100).

ResizeParams

Parameters for a simple resize operation.

Sharpening

Sharpening parameters for unsharp mask.

ThumbnailParams

Parameters for a thumbnail operation (resize + center crop).