keet-deobfuscated / @holepunchto / keet-media / worker / media.js

import { image as e, video as t } from "bare-media"
import a from "b4a"
import {
  CHAT_MESSAGE_PREVIEW as i,
  CHAT_LINK_PREVIEW as n,
  CHAT_MESSAGE_MAX_FRAMES as r,
  PROFILE_AVATAR as o,
  ROOM_AVATAR as d,
  CHAT_MESSAGE_PREVIEW_DEFAULT_SIZES as s,
  CHAT_MESSAGE_PREVIEW_SIZE as c,
} from "../shared/constants"
export async function createChatImagePreview({ path: t, sizes: a }) {
  return m(await e(t).decode().orientate(), a)
}
export async function createChatVideoPreview({ path: a, sizes: i }) {
  let n = await t(a).extractFrames({ frameIndex: 1 })
  const { rotation: r, flipH: o, flipV: d } = await t(a).metadata()
  return (
    (r || o || d) && (n = await e(n).orientate({ transform: { rotate: r, flipH: o, flipV: d } })),
    m(n, i)
  )
}
export async function createChatLinkPreview({ path: t, buffer: a }) {
  return h(t ? await e(t).decode() : await e.decode(a), n)
}
export async function createProfileAvatar({ path: e, crop: t }) {
  return u(e, t, o)
}
export async function createRoomAvatar({ path: e, crop: t }) {
  return u(e, t, d)
}
export async function decodeImage({ httpLink: t }) {
  const a = await e(t).decode().orientate(),
    { width: i, height: n, data: r } = a
  return { metadata: { dimensions: { width: i, height: n } }, data: r }
}
async function m(t, a) {
  const n = a || s,
    o = e.slice(t, { end: r }),
    [d, m, u] = await Promise.all([
      n.includes(c.SMALL) ? h(o, i.small) : void 0,
      n.includes(c.MEDIUM) ? h(o, i.medium) : void 0,
      n.includes(c.LARGE) ? h(t, i.large) : void 0,
    ])
  return {
    metadata: { dimensions: { width: t.width, height: t.height } },
    small: d,
    medium: m,
    large: u,
  }
}
async function h(t, i) {
  const n = await e.resize(t, i.resize),
    r = await e.encode(n, i.encode),
    o = i.base64 ? { base64: a.toString(r, "base64") } : { buffer: r }
  return {
    metadata: { mimetype: i.encode.mimetype, dimensions: { width: n.width, height: n.height } },
    ...o,
  }
}
async function u(t, a, i) {
  const n = await e(t).decode().slice({ start: 0, end: 1 }).orientate(),
    { width: r, height: o } = n,
    d = Math.min(r, o),
    s = a || {
      left: r > o ? Math.floor((r - o) / 2) : 0,
      top: o > r ? Math.floor((o - r) / 2) : 0,
      width: d,
      height: d,
    },
    c = await e.crop(n, s),
    [m, h] = await Promise.all([l(c, i.small), l(c, i.medium)])
  return { small: m, medium: h }
}
async function l(t, i) {
  const n = await e.resize(t, i.resize),
    r = await e.encode(n, i.encode)
  return {
    metadata: { mimetype: i.encode.mimetype, dimensions: { width: n.width, height: n.height } },
    base64: a.toString(r, "base64"),
  }
}