Struct PdfiumBackend 

pub struct PdfiumBackend { /* private fields */ }

PDFium backend implementation.

Implementations

impl PdfiumBackend

pub fn from_library_path(path: impl Into<PathBuf>) -> Self

Construct a backend using an explicit PDFium dynamic library path.

pub fn with_artifact_path(self, path: impl Into<PathBuf>) -> Self

Add an explicit downloaded PDFium release artifact path for archive-hash verification.

pub fn with_version(self, version: impl Into<String>) -> Self

Construct a backend using an explicit PDFium path and pinned version string.

pub fn probe_library(&self) -> Result<BackendManifest, EthosError>

Probe whether the configured PDFium dynamic library can be loaded and initialized.

This does not parse a document. It uses the same library load, symbol resolution, and process-global PDFium init/destroy path as extraction, so callers should run it in a disposable subprocess when probing operator-provided libraries.

pub fn geometry_probe( &self, pdf_bytes: &[u8], config: &ParseConfig, ) -> Result<GeometryProbeReport, EthosError>

Produce a debug-only geometry-source probe from PDFium text APIs.

The returned data is diagnostic evidence only. It is intentionally separate from EthosPdfBackend::extract so parser behavior, canonical JSON, and document fingerprints cannot change by accident.

pub fn render_crop_raw( &self, pdf_bytes: &[u8], page_index: u32, bbox: QRect, ) -> Result<RawCrop, EthosError>

Render a raw BGRA crop for a 1-based page and quantized top-left bbox.

The current boundary renders the page at 1 pixel per PDF point, then crops the requested bbox. It is intentionally simple; direct crop-window rendering can replace it later without changing the output contract.

Trait Implementations

impl Clone for PdfiumBackend

fn clone(&self) -> PdfiumBackend

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for PdfiumBackend

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

Formats the value using the given formatter.

impl Default for PdfiumBackend

fn default() -> PdfiumBackend

Returns the “default value” for a type.

impl EthosPdfBackend for PdfiumBackend

fn manifest(&self) -> BackendManifest

Build identity for the profile manifest.

fn page_count(&self, pdf_bytes: &[u8]) -> Result<u32, EthosError>

Page count after ingest validation (encryption/corruption checks happen here and fail with stable codes).

fn extract( &self, pdf_bytes: &[u8], config: &ParseConfig, ) -> Result<Extraction, EthosError>

Extract pages/spans/regions under the given config. Page-range filtering is a backend responsibility (config.pages); geometry arrives quantized.