View Source Pdf.Reader.Filter.RLE (ExPDF v1.0.1)

RunLengthDecode filter — decodes PackBits-style run-length encoded data.

Per PDF spec §7.4.5:

  • Length byte 128 → end of data (EOD).
  • Length byte 0–127 → copy the next n + 1 bytes verbatim (literal run).
  • Length byte 129–255 → repeat the next byte 257 - n times (run).

Summary

Functions

decode(bytes, params)

Decode RunLength-encoded bytes. params is ignored.

Functions

Link to this function

decode(bytes, params)

View Source 
@spec decode(binary(), map()) :: {:ok, binary()} | {:error, term()}

Decode RunLength-encoded bytes. params is ignored.