@holzchopf/flp-file v1.0.0

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• @holzchopf/flp-file
  • type FLPChunkType = 'FLhd' | 'FLdt'
  • abstract class FLPChunk
    • type: FLPChunkType
    • abstract getBinary(): ArrayBuffer
    • abstract setBinary(buffer: ArrayBuffer): void
  • class FLPHeaderChunk extends FLPChunk
    • format: number = -1
    • get formatName()
    • channelCnt: number = 0
    • ppq: number = 96
  • class FLPDataChunk extends FLPChunk
    • events: FLPEvent[] = []
  • type FLPEventTypeName = keyof typeof FLPEventTypeRaw
  • type FLPEventTypeId = typeof FLPEventTypeRaw[FLPEventTypeName]
  • const FLPEventType =
    • name: (id: number): FLPEventTypeName | 'unknown' =>
    • byName: (name: string): FLPEventTypeId | undefined =>
  • type FLPDataType = 'int8' | 'int16' | 'int32' | 'uint8' | 'uint16' | 'uint32' | 'float32' | 'binary' | 'ascii' | 'utf-16le'
  • let FLPEventValueDataType: Partial<Record<FLPEventTypeName, FLPDataType>> =
  • class FLPEvent
    • type: number
    • get typeName()
    • value: number | string | ArrayBuffer
    • get maxByteLength()
    • getBinary(): ArrayBuffer
    • setBinary(buffer: ArrayBuffer)
    • static getValueDataType(type: number | FLPEventTypeName): FLPDataType
  • type FLPFileFormatName = keyof typeof FLPFileFormatRaw
  • type FLPFileFormatId = typeof FLPFileFormatRaw[FLPFileFormatName]
  • const FLPFileFormat =
    • name: (id: number): FLPFileFormatName | 'unknown' =>
    • byName: (name: string): FLPFileFormatId | undefined =>
  • class FLPFile
    • header: FLPHeaderChunk
    • data: FLPDataChunk
    • getBinary(): ArrayBuffer
    • setBinary(buffer: ArrayBuffer)

original Markdown from src/_preamble.md

@holzchopf/flp-file

Allows to read and write FL Studio project and state files.

transformed Javadoc from src/flp-chunk.ts

type FLPChunkType = 'FLhd' | 'FLdt'

The chunks in an FLPFile have a 4-byte ASCII-string indicated type. These are those types.

abstract class FLPChunk

Class representing a chunk in an FLPFile.

type: FLPChunkType

Type of this chunk.

abstract getBinary(): ArrayBuffer

Creates the binary data for this chunk and returns it.

abstract setBinary(buffer: ArrayBuffer): void

Sets this chunk's values from binary data.

• param buffer — Binary data.

class FLPHeaderChunk extends FLPChunk

Specific class for the header chunk.

format: number = -1

Numeric file format identifier.

get formatName()

Name of file format.

channelCnt: number = 0

Number of channels.

ppq: number = 96

Project PPQ.

class FLPDataChunk extends FLPChunk

Specific class for the data chunk.

events: FLPEvent[] = []

FLPEvents in this chunk.

transformed Javadoc from src/flp-event-type.ts

type FLPEventTypeName = keyof typeof FLPEventTypeRaw

Known event names.

type FLPEventTypeId = typeof FLPEventTypeRaw[FLPEventTypeName]

Known event IDs.

const FLPEventType =

Types of the events in an FLPDataChunk 🡵.

name: (id: number): FLPEventTypeName | 'unknown' =>

Returns the name of a given event ID, or 'unknown'.

• param id — Event ID.

byName: (name: string): FLPEventTypeId | undefined =>

Returns the ID for a given event name, or undefined

• param name — Event name.

transformed Javadoc from src/flp-event.ts

type FLPDataType = 'int8' | 'int16' | 'int32' | 'uint8' | 'uint16' | 'uint32' | 'float32' | 'binary' | 'ascii' | 'utf-16le'

Possible data types for event values.

let FLPEventValueDataType: Partial<Record<FLPEventTypeName, FLPDataType>> =

Data types for event's values. Falls back to uint8 for event ids < 64, uint16 for event ids < 128, uint32 for event ids < 192, utf-16le for event ids < 210, binary otherwise.

This is not a const - you can add or overwrite types for events in your project.

class FLPEvent

Class for events.

type: number

Numeric FLPEventType 🡵.

get typeName()

Name of FLPEventType 🡵. Readonly.

value: number | string | ArrayBuffer

Primitive representation of event data. Data type varies by event type.

get maxByteLength()

Returns the maximum allowed byte length depending on event type.

getBinary(): ArrayBuffer

Creates the binary data for this event and returns it.

setBinary(buffer: ArrayBuffer)

Sets this event's values from binary data.

• param buffer — Binary data.

static getValueDataType(type: number | FLPEventTypeName): FLPDataType

Returns the expected data type for a given event type.

• param type — Event type.

transformed Javadoc from src/flp-file-format.ts

type FLPFileFormatName = keyof typeof FLPFileFormatRaw

Known file format names.

type FLPFileFormatId = typeof FLPFileFormatRaw[FLPFileFormatName]

Known file format IDs.

const FLPFileFormat =

Specific file formats of FLPFile 🡵s.

name: (id: number): FLPFileFormatName | 'unknown' =>

Returns the name of a given file format ID, or 'unknown'

• param id — File format ID.

byName: (name: string): FLPFileFormatId | undefined =>

Returns the ID for a given file format name, or undefined

• param name — File format name.

transformed Javadoc from src/flp-file.ts

class FLPFile

Class representing an FL Studio file, which might be a project file (.flp). But other FL Studio files, like state files (.fst) have the same format.

Every FLPFile consists of two chunks:

• A header chunk, containing file and global project information.
• A data chunk, containing event data.

header: FLPHeaderChunk

Header chunk.

data: FLPDataChunk

Data chunk.

getBinary(): ArrayBuffer

Creates the binary data for this file and returns it.

setBinary(buffer: ArrayBuffer)

Sets this files's values from binary data.

• param buffer — Binary data.