Struct ExactFallbackCodec 

pub struct ExactFallbackCodec { /* private fields */ }

Exact fallback codec: stores raw f32 bytes with no compression.

Implementations

impl ExactFallbackCodec

pub fn new(dim: usize) -> Self

Trait Implementations

impl KVecCodec for ExactFallbackCodec

fn codec_id(&self) -> CodecId

Return the codec identifier (“fib_k4_n32”, “turbo_8bit”, etc.).

fn encode(&self, vector: &[f32], _seed: u64) -> Result<Vec<u8>>

Encode a vector of f32 values into a compressed byte payload.

fn decode(&self, payload: &[u8], _seed: u64) -> Result<Vec<f32>>

Decode a compressed byte payload back into a vector of f32 values.

fn dim(&self) -> usize

The expected dimension of input/output vectors.

fn compression_ratio(&self) -> f64

Expected compression ratio (nominal).

fn encode_batch(&self, vectors: &[&[f32]], seed: u64) -> Result<Vec<Vec<u8>>>

Encode a batch of vectors in one call.

fn decode_batch(&self, payloads: &[&[u8]], seed: u64) -> Result<Vec<Vec<f32>>>

Decode a batch of compressed payloads. Default loops over decode.

fn encode_batch_compact( &self, vectors: &[&[f32]], seed: u64, ) -> Result<Option<Vec<u8>>>

Encode a batch into one amortized binary payload when supported.

fn decode_batch_compact( &self, payload: &[u8], seed: u64, ) -> Result<Option<Vec<Vec<f32>>>>

Decode one compact batch payload back into vectors when supported.

fn is_gpu_accelerated(&self) -> bool

True if this adapter has access to GPU acceleration at runtime.

fn is_gpu_accelerated_for(&self, n: usize, d: usize) -> bool

True if a batch of n vectors at dimension d would actually dispatch to GPU. Default falls back to the device-availability probe; codecs with a runtime threshold should override.

fn codebook_digest(&self, _seed: u64) -> Option<String>

Codebook digest (BLAKE3 hex) for provenance receipts. Returns None if the codec doesn’t support this.

fn rotation_digest(&self, _seed: u64) -> Option<String>

Rotation digest (BLAKE3 hex) for provenance receipts. Returns None if the codec doesn’t support this.