@dan-uni/dan-any/src/ass-gen/util/danconvert.ts

A danmaku transformer lib, supporting danmaku from different platforms.

import type { Options as UniPoolOptions } from '../..'
import type { Danmaku, RGB } from '../types'

import { UniPool } from '../..'
import { Modes, UniDM } from '../../utils/dm-gen'
import { DanmakuType } from '../types'

function decimalToRGB888(decimal: number): RGB {
  const r = (decimal >> 16) & 0xff
  const g = (decimal >> 8) & 0xff
  const b = decimal & 0xff
  return {
    r,
    g,
    b,
  } satisfies RGB
}

export function UniPool2DanmakuLists(UP: UniPool): Danmaku[] {
  const dans = UP.dans
  let type = DanmakuType.SCROLL
  return dans.map((d) => {
    if (d.mode === Modes.Bottom) type = DanmakuType.BOTTOM
    else if (d.mode === Modes.Top) type = DanmakuType.TOP
    return {
      time: d.progress,
      type,
      fontSizeType: d.fontsize,
      content: d.content,
      color: decimalToRGB888(d.color),
      extra: d,
    } satisfies Danmaku
  })
}
export function DanmakuList2UniPool(
  d: Danmaku[],
  options?: UniPoolOptions,
): UniPool {
  return new UniPool(
    d.map((d) => UniDM.create(d.extra)),
    options,
  )
}