Struct chd::huffman::HuffmanDecoder

pub struct HuffmanDecoder<'a, const NUM_CODES: usize, const MAX_BITS: u8, const LOOKUP_ARRAY_LEN: usize> { /* private fields */ }

Available on huffman_api only.

Allocation free CHD huffman decoder.

MAX_BITS must be less than or equal to 24. LOOKUP_ARRAY_LEN must be equal to lookup_len::<MAX_BITS>(), which is 2 ** MAX_BITS.

The Huffman lookup array is stack-allocated. If MAX_BITS is too large, the stack may not be large enough to hold the HuffmanDecoder. To free up stack space, the HuffmanDecoder should be boxed.

Implementations

impl<'a, const NUM_CODES: usize, const MAX_BITS: u8, const LOOKUP_ARRAY_LEN: usize> HuffmanDecoder<'a, NUM_CODES, MAX_BITS, LOOKUP_ARRAY_LEN>

pub fn from_tree_rle(reader: &mut BitReader<'_>) -> Result<Self, HuffmanError>

Import RLE encoded Huffman tree from the bit stream.

pub fn from_huffman_tree( reader: &mut BitReader<'_> ) -> Result<Self, HuffmanError>

Import a pre-encoded Huffman tree from the bitstream.

pub fn decode_one( &self, reader: &mut BitReader<'a> ) -> Result<u32, HuffmanError>

Decode a single code from the Huffman bitstream