Struct ModalityIndex 

pub struct ModalityIndex {
    pub entries: HashMap<u32, Modality>,
}

Sidecar index mapping block indices to modality metadata.

Fields

entries: HashMap<u32, Modality>

Implementations

impl ModalityIndex

pub fn load_or_init(output_dir: &Path) -> Self

pub fn save(&self, output_dir: &Path) -> Result<(), String>

pub fn register(&mut self, block_idx: u32, modality: Modality)

Register a block’s modality.

pub fn get(&self, block_idx: u32) -> Option<&Modality>

Get modality for a block.

pub fn search_image_similar( &self, phash: &[u8; 8], max_distance: u32, ) -> Vec<(u32, u32)>

Search by perceptual hash similarity (hamming distance). Returns Vec of (block_idx, hamming_distance), sorted by distance.

pub fn search_audio_similar( &self, fingerprint: &[u8; 16], threshold: f32, ) -> Vec<(u32, f32)>

Search by spectral fingerprint similarity. Returns Vec of (block_idx, similarity_score), sorted by score descending.

pub fn search_structured(&self, field: &str, value: &FieldValue) -> Vec<u32>

Search structured data by field name and value.

pub fn modality_coords(modality: &Modality) -> (f32, f32, f32)

Compute spatial coordinates for a modality. Images: from phash, Audio: from spectral features, Structured: from field hashing.

pub fn stats(&self) -> ModalityStats