Class BlockedSource

constructor

• new BlockedSource(
      source: BaseSource,
      options?: { blockSize?: number; cacheSize?: number },
  ): BlockedSource

  Parameters

  • source: BaseSource

    The underlying source that shall be blocked and cached

  • options: { blockSize?: number; cacheSize?: number } = {}

    • OptionalblockSize?: number

      Block size.

    • OptionalcacheSize?: number

      The number of blocks to cache.

  Returns BlockedSource

abortedBlockIds

blockCache

blockIdsToFetch

blockRequests

blockSize

evictedBlocks

source

fileSize

• get fileSize(): number | null

  Returns the filesize if already determined and null otherwise

  Returns number | null

fetch

• fetch(slices: Slice[], signal?: AbortSignal): Promise<ArrayBuffer[]>

  Parameters

  • slices: Slice[]
  • Optionalsignal: AbortSignal

  Returns Promise<ArrayBuffer[]>

fetchBlocks

• fetchBlocks(signal?: AbortSignal): void

  Parameters

  • Optionalsignal: AbortSignal

  Returns void

groupBlocks

• groupBlocks(blockIds: Set<number>): BlockGroup[]

  Parameters

  • blockIds: Set<number>

  Returns BlockGroup[]

readSliceData

• readSliceData(slices: Slice[], blocks: Map<number, Block>): ArrayBuffer[]

  Parameters

  • slices: Slice[]
  • blocks: Map<number, Block>

  Returns ArrayBuffer[]