57 lines
2.2 KiB
TypeScript
57 lines
2.2 KiB
TypeScript
import type { IRatio } from '../type.js';
|
||
export type StringEncoding = 'ascii' | 'utf8' | 'utf-16le' | 'ucs2' | 'base64url' | 'latin1' | 'hex';
|
||
export declare function getBit(buf: Uint8Array, off: number, bit: number): boolean;
|
||
/**
|
||
* Find delimiting zero in uint8Array
|
||
* @param uint8Array Uint8Array to find the zero delimiter in
|
||
* @param encoding The string encoding used
|
||
* @return position in uint8Array where zero found, or uint8Array.length if not found
|
||
*/
|
||
export declare function findZero(uint8Array: Uint8Array, encoding?: StringEncoding): number;
|
||
export declare function trimRightNull(x: string): string;
|
||
/**
|
||
* Decode string
|
||
*/
|
||
export declare function decodeString(uint8Array: Uint8Array, encoding: StringEncoding): string;
|
||
export declare function stripNulls(str: string): string;
|
||
/**
|
||
* Read bit-aligned number start from buffer
|
||
* Total offset in bits = byteOffset * 8 + bitOffset
|
||
* @param source Byte buffer
|
||
* @param byteOffset Starting offset in bytes
|
||
* @param bitOffset Starting offset in bits: 0 = lsb
|
||
* @param len Length of number in bits
|
||
* @return Decoded bit aligned number
|
||
*/
|
||
export declare function getBitAllignedNumber(source: Uint8Array, byteOffset: number, bitOffset: number, len: number): number;
|
||
/**
|
||
* Read bit-aligned number start from buffer
|
||
* Total offset in bits = byteOffset * 8 + bitOffset
|
||
* @param source Byte Uint8Array
|
||
* @param byteOffset Starting offset in bytes
|
||
* @param bitOffset Starting offset in bits: 0 = most significant bit, 7 is the least significant bit
|
||
* @return True if bit is set
|
||
*/
|
||
export declare function isBitSet(source: Uint8Array, byteOffset: number, bitOffset: number): boolean;
|
||
export declare function a2hex(str: string): string;
|
||
/**
|
||
* Convert power ratio to DB
|
||
* ratio: [0..1]
|
||
*/
|
||
export declare function ratioToDb(ratio: number): number;
|
||
/**
|
||
* Convert dB to ratio
|
||
* db Decibels
|
||
*/
|
||
export declare function dbToRatio(dB: number): number;
|
||
/**
|
||
* Convert replay gain to ratio and Decibel
|
||
* @param value string holding a ratio like '0.034' or '-7.54 dB'
|
||
*/
|
||
export declare function toRatio(value: string): IRatio | undefined;
|
||
/**
|
||
* Decode a big-endian unsigned integer from a Uint8Array.
|
||
* Supports dynamic length (1–8 bytes).
|
||
*/
|
||
export declare function decodeUintBE(uint8Array: Uint8Array): number;
|