ePaperify

Framebuffer/image pre-processing library for e-Paper displays

Usage

export function to4Bpp(
  image: Buffer,
  format?: string | undefined | null,
  signal?: AbortSignal | undefined | null,
): Promise<Buffer>

Converts any image to 4-bit-per-pixel grayscale, with dithering to emulate 8-bit-per-pixel

Parameters:
- image: image buffer, can be any image format supported by Rust image library, e.g. PNG, JPG, TIFF, WebP...
- format: format string, e.g. "png", "jpg"; by default it's "png"
- signal: signal of AbortController

export function toMonochrome(
  image: Buffer,
  format?: string | undefined | null,
  signal?: AbortSignal | undefined | null,
): Promise<Buffer>

Converts any image to 1-bit-per-pixel grayscale, with dithering to emulate 8-bit-per-pixel

Parameters:
- image: image buffer, can be any image format supported by Rust image library, e.g. PNG, JPG, TIFF, WebP...
- format: format string, e.g. "png", "jpg"; by default it's "png"
- signal: signal of AbortController

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