Struct ParallelTileDecoder 

pub struct ParallelTileDecoder {
    pub frame_width: u32,
    pub frame_height: u32,
    pub tile_cols: u32,
    pub tile_rows: u32,
}

Parallel tile decoder for AV1 frames.

Divides a frame into a grid of tile_cols × tile_rows tiles, decodes them concurrently with rayon, and assembles the results into a planar YUV 4:2:0 buffer.

Fields

frame_width: u32

Frame width in pixels.

frame_height: u32

Frame height in pixels.

tile_cols: u32

Number of tile columns.

tile_rows: u32

Number of tile rows.

Implementations

impl ParallelTileDecoder

pub fn new( frame_width: u32, frame_height: u32, tile_cols: u32, tile_rows: u32, ) -> Self

Create a new ParallelTileDecoder.

Panics

Does not panic; use Self::decode_tiles_parallel error return for invalid configurations.

pub fn split_into_tiles(&self, frame_data: &[u8]) -> Vec<TileJob>

Split frame_data (luma plane bytes, row-major) into TileJobs.

The frame is divided into a tile_cols × tile_rows grid. The last tile column and row absorb any remainder pixels.

frame_data is interpreted as a contiguous luma plane of frame_width × frame_height bytes. If frame_data is shorter than the expected luma plane size the available bytes are distributed proportionally across tiles.

pub fn decode_tiles_parallel(&self, tiles: Vec<TileJob>) -> CodecResult<Vec<u8>>

Decode all tiles in parallel using rayon and assemble the output frame.

Returns a planar YUV 4:2:0 buffer of length frame_width × frame_height × 3 / 2.

Errors

Returns CodecError::InvalidParameter when the tile grid dimensions are zero, or CodecError::InvalidBitstream when an individual tile fails to decode.

pub fn assemble_frame(&self, tile_outputs: &[(TileJob, Vec<u8>)]) -> Vec<u8>

Assemble decoded tile outputs into a full planar YUV 4:2:0 frame.

The luma (Y) plane is filled from each tile’s decoded bytes. The chroma (Cb, Cr) planes are zeroed (neutral grey), which is appropriate for a structural pass that does not yet decode chroma.

Returns a buffer of frame_width × frame_height × 3 / 2 bytes:

• bytes [0 .. W*H) — luma
• bytes [W*H .. W*H + W*H/4) — Cb (zeroed)
• bytes [W*H + W*H/4 .. W*H*3/2) — Cr (zeroed)

Trait Implementations

impl Clone for ParallelTileDecoder

fn clone(&self) -> ParallelTileDecoder

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ParallelTileDecoder

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

Formats the value using the given formatter.