Struct laz::laszip::parallel::ParLasZipAppender

pub struct ParLasZipAppender<W> { /* private fields */ }

Struct that handles appending compressed points to a LAZ file in parallel

Implementations

impl<W> ParLasZipAppender<W>

where W: Read + Write + Seek + Send,

pub fn new(data: W, vlr: LazVlr) -> Result<Self>

data must be positioned at the start of point data

pub fn done(&mut self) -> Result<()>

Tells the compressor that no more points will be compressed

• Compresses & writes the rest of the points to form the last chunk
• Writes the chunk table
• update the offset to the chunk_table

pub fn get_mut(&mut self) -> &mut W

impl<W> ParLasZipAppender<W>

where W: Write + Seek + Send,

pub fn compress_many(&mut self, points: &[u8]) -> Result<()>

Compresses many points using multiple threads.

Important

This must be called only when writing fixed-size chunks. This will panic otherwise.

Note

For this function to actually use multiple threads, the points buffer shall hold more points that the vlr’s chunk_size.

pub fn compress_chunks<Chunks, Item>(&mut self, chunks: Chunks) -> Result<()>

where Item: AsRef<[u8]> + Send, Chunks: IntoParallelIterator<Item = Item>,

Compresses multiple chunks using multiple threads.

Important

This must be called only when writing variable-size chunks. This will panic otherwise.

Note

For this function to actually use multiple threads, there should be more than one chunk. buffer shall hold more points that the vlr’s chunk_size.