Struct DcxHeader 

pub struct DcxHeader {
    pub mode: Mode,
    pub format_hint: FormatHint,
    pub original_size: u64,
    pub compressed_size: u64,
    pub crc32: u32,
    pub transform_metadata: Vec<u8>,
    pub has_dict: bool,
    pub meta_compressed: bool,
    pub use_brotli: bool,
    pub meta_embedded: bool,
}

.dcx file header.

Fields

mode: Mode

format_hint: FormatHint

original_size: u64

compressed_size: u64

crc32: u32

transform_metadata: Vec<u8>

has_dict: bool

True if the compressed payload embeds a zstd dictionary.

meta_compressed: bool

True if transform_metadata is zstd-compressed (bit 2 of flags).

use_brotli: bool

True if compressed with brotli instead of zstd (bit 3 of flags).

meta_embedded: bool

True if transform metadata is embedded in the compressed stream (bit 4 of flags). When set, the header’s transform_metadata is empty; metadata lives inside the decompressed payload as [meta_len:u32 LE][raw_metadata][preprocessed_data].

Implementations

impl DcxHeader

pub fn write_to<W: Write>(&self, w: &mut W) -> Result<()>

Serialize header to writer.

pub fn read_from<R: Read>(r: &mut R) -> Result<Self>

Deserialize header from reader.

pub fn total_size(&self) -> usize

Total header size including transform metadata.

Trait Implementations

impl Clone for DcxHeader

fn clone(&self) -> DcxHeader

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for DcxHeader

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

Formats the value using the given formatter.