Struct PdfProcessorImpl 

pub struct PdfProcessorImpl { /* private fields */ }

PDF processor implementation using lopdf and pdfium-render.

Handles PDF loading/saving, page rasterisation, and PDF reconstruction.

Implementations

impl PdfProcessorImpl

pub const fn new(dpi: u16) -> Self

Create a new PDF processor with the given DPI.

Trait Implementations

impl Debug for PdfProcessorImpl

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for PdfProcessorImpl

fn default() -> Self

Returns the “default value” for a type.

impl PdfProcessor for PdfProcessorImpl

fn load_pdf(&self, path: &Path) -> Result<CoverMedia, PdfError>

Parse a PDF file from path into a CoverMedia.

fn save_pdf(&self, media: &CoverMedia, path: &Path) -> Result<(), PdfError>

Serialise media back to a PDF file at path.

fn render_pages_to_images( &self, pdf: &CoverMedia, ) -> Result<Vec<CoverMedia>, PdfError>

Rasterise every page of pdf to a PNG CoverMedia.

fn rebuild_pdf_from_images( &self, images: Vec<CoverMedia>, _original: &CoverMedia, ) -> Result<CoverMedia, PdfError>

Reconstruct a PDF from rasterised images, retaining original metadata where possible.

fn embed_in_content_stream( &self, pdf: CoverMedia, payload: &Payload, ) -> Result<CoverMedia, PdfError>

Embed payload via content-stream LSB coefficient modification.

fn extract_from_content_stream( &self, pdf: &CoverMedia, ) -> Result<Payload, PdfError>

Extract a payload previously embedded in the content stream.

fn embed_in_metadata( &self, pdf: CoverMedia, payload: &Payload, ) -> Result<CoverMedia, PdfError>

Embed payload into XMP / document-level metadata fields.

fn extract_from_metadata(&self, pdf: &CoverMedia) -> Result<Payload, PdfError>

Extract a payload previously embedded in XMP / document-level metadata.