@webrock/av-cliper/dist/av-cliper.js

WebCodecs-based, combine video, audio, images, text, with animation support 基于 WebCodecs 合成 视频、音频、图片、文字，支持动画

var Ci = Object.defineProperty;
var Je = (i) => {
  throw TypeError(i);
};
var vi = (i, t, e) => t in i ? Ci(i, t, { enumerable: !0, configurable: !0, writable: !0, value: e }) : i[t] = e;
var v = (i, t, e) => vi(i, typeof t != "symbol" ? t + "" : t, e), Ie = (i, t, e) => t.has(i) || Je("Cannot " + e);
var s = (i, t, e) => (Ie(i, t, "read from private field"), e ? e.call(i) : t.get(i)), d = (i, t, e) => t.has(i) ? Je("Cannot add the same private member more than once") : t instanceof WeakSet ? t.add(i) : t.set(i, e), h = (i, t, e, n) => (Ie(i, t, "write to private field"), n ? n.call(i, e) : t.set(i, e), e), B = (i, t, e) => (Ie(i, t, "access private method"), e);
import mt from "@webav/mp4box.js";
import { workerTimer as Si, Log as k, autoReadStream as ze, file2stream as oi, EventTool as Le, recodemux as Ti } from "@webrock/internal-utils";
import { Log as On } from "@webrock/internal-utils";
import { tmpfile as Ee, write as Pe } from "opfs-tools";
import * as Ai from "wave-resampler";
const ki = `#version 300 es
  layout (location = 0) in vec4 a_position;
  layout (location = 1) in vec2 a_texCoord;
  out vec2 v_texCoord;
  void main () {
    gl_Position = a_position;
    v_texCoord = a_texCoord;
  }
`, Fi = `#version 300 es
precision mediump float;
out vec4 FragColor;
in vec2 v_texCoord;

uniform sampler2D frameTexture;
uniform vec3 keyColor;

// 色度的相似度计算
uniform float similarity;
// 透明度的平滑度计算
uniform float smoothness;
// 降低绿幕饱和度，提高抠图准确度
uniform float spill;

vec2 RGBtoUV(vec3 rgb) {
  return vec2(
    rgb.r * -0.169 + rgb.g * -0.331 + rgb.b *  0.5    + 0.5,
    rgb.r *  0.5   + rgb.g * -0.419 + rgb.b * -0.081  + 0.5
  );
}

void main() {
  // 获取当前像素的rgba值
  vec4 rgba = texture(frameTexture, v_texCoord);
  // 计算当前像素与绿幕像素的色度差值
  vec2 chromaVec = RGBtoUV(rgba.rgb) - RGBtoUV(keyColor);
  // 计算当前像素与绿幕像素的色度距离（向量长度）, 越相像则色度距离越小
  float chromaDist = sqrt(dot(chromaVec, chromaVec));
  // 设置了一个相似度阈值，baseMask为负，则表明是绿幕，为正则表明不是绿幕
  float baseMask = chromaDist - similarity;
  // 如果baseMask为负数，fullMask等于0；baseMask为正数，越大，则透明度越低
  float fullMask = pow(clamp(baseMask / smoothness, 0., 1.), 1.5);
  rgba.a = fullMask; // 设置透明度
  // 如果baseMask为负数，spillVal等于0；baseMask为整数，越小，饱和度越低
  float spillVal = pow(clamp(baseMask / spill, 0., 1.), 1.5);
  float desat = clamp(rgba.r * 0.2126 + rgba.g * 0.7152 + rgba.b * 0.0722, 0., 1.); // 计算当前像素的灰度值
  rgba.rgb = mix(vec3(desat, desat, desat), rgba.rgb, spillVal);
  FragColor = rgba;
}
`, Ii = [-1, 1, -1, -1, 1, -1, 1, -1, 1, 1, -1, 1], Ri = [0, 1, 0, 0, 1, 0, 1, 0, 1, 1, 0, 1];
function Ei(i, t, e) {
  const n = Ke(i, i.VERTEX_SHADER, t), a = Ke(i, i.FRAGMENT_SHADER, e), r = i.createProgram();
  if (i.attachShader(r, n), i.attachShader(r, a), i.linkProgram(r), !i.getProgramParameter(r, i.LINK_STATUS))
    throw Error(
      i.getProgramInfoLog(r) ?? "Unable to initialize the shader program"
    );
  return r;
}
function Ke(i, t, e) {
  const n = i.createShader(t);
  if (i.shaderSource(n, e), i.compileShader(n), !i.getShaderParameter(n, i.COMPILE_STATUS)) {
    const a = i.getShaderInfoLog(n);
    throw i.deleteShader(n), Error(a ?? "An error occurred compiling the shaders");
  }
  return n;
}
function Pi(i, t, e) {
  i.bindTexture(i.TEXTURE_2D, e), i.texImage2D(i.TEXTURE_2D, 0, i.RGBA, i.RGBA, i.UNSIGNED_BYTE, t), i.drawArrays(i.TRIANGLES, 0, 6);
}
function Di(i) {
  const t = i.createTexture();
  if (t == null) throw Error("Create WebGL texture error");
  i.bindTexture(i.TEXTURE_2D, t);
  const e = 0, n = i.RGBA, a = 1, r = 1, o = 0, c = i.RGBA, l = i.UNSIGNED_BYTE, f = new Uint8Array([0, 0, 255, 255]);
  return i.texImage2D(
    i.TEXTURE_2D,
    e,
    n,
    a,
    r,
    o,
    c,
    l,
    f
  ), i.texParameteri(i.TEXTURE_2D, i.TEXTURE_MAG_FILTER, i.LINEAR), i.texParameteri(i.TEXTURE_2D, i.TEXTURE_MIN_FILTER, i.LINEAR), i.texParameteri(i.TEXTURE_2D, i.TEXTURE_WRAP_S, i.CLAMP_TO_EDGE), i.texParameteri(i.TEXTURE_2D, i.TEXTURE_WRAP_T, i.CLAMP_TO_EDGE), t;
}
function Oi(i) {
  const t = "document" in globalThis ? globalThis.document.createElement("canvas") : new OffscreenCanvas(i.width, i.height);
  t.width = i.width, t.height = i.height;
  const e = t.getContext("webgl2", {
    premultipliedAlpha: !1,
    alpha: !0
  });
  if (e == null) throw Error("Cant create gl context");
  const n = Ei(e, ki, Fi);
  e.useProgram(n), e.uniform3fv(
    e.getUniformLocation(n, "keyColor"),
    i.keyColor.map((l) => l / 255)
  ), e.uniform1f(
    e.getUniformLocation(n, "similarity"),
    i.similarity
  ), e.uniform1f(
    e.getUniformLocation(n, "smoothness"),
    i.smoothness
  ), e.uniform1f(e.getUniformLocation(n, "spill"), i.spill);
  const a = e.createBuffer();
  e.bindBuffer(e.ARRAY_BUFFER, a), e.bufferData(e.ARRAY_BUFFER, new Float32Array(Ii), e.STATIC_DRAW);
  const r = e.getAttribLocation(n, "a_position");
  e.vertexAttribPointer(
    r,
    2,
    e.FLOAT,
    !1,
    Float32Array.BYTES_PER_ELEMENT * 2,
    0
  ), e.enableVertexAttribArray(r);
  const o = e.createBuffer();
  e.bindBuffer(e.ARRAY_BUFFER, o), e.bufferData(
    e.ARRAY_BUFFER,
    new Float32Array(Ri),
    e.STATIC_DRAW
  );
  const c = e.getAttribLocation(n, "a_texCoord");
  return e.vertexAttribPointer(
    c,
    2,
    e.FLOAT,
    !1,
    Float32Array.BYTES_PER_ELEMENT * 2,
    0
  ), e.enableVertexAttribArray(c), e.pixelStorei(e.UNPACK_FLIP_Y_WEBGL, 1), { cvs: t, gl: e };
}
function Bi(i) {
  return i instanceof VideoFrame ? { width: i.codedWidth, height: i.codedHeight } : { width: i.width, height: i.height };
}
function Mi(i) {
  const e = new OffscreenCanvas(1, 1).getContext("2d");
  e.drawImage(i, 0, 0);
  const {
    data: [n, a, r]
  } = e.getImageData(0, 0, 1, 1);
  return [n, a, r];
}
const kn = (i) => {
  let t = null, e = null, n = i.keyColor, a = null;
  return async (r) => {
    if ((t == null || e == null || a == null) && (n == null && (n = Mi(r)), { cvs: t, gl: e } = Oi({
      ...Bi(r),
      keyColor: n,
      ...i
    }), a = Di(e)), Pi(e, r, a), globalThis.VideoFrame != null && r instanceof globalThis.VideoFrame) {
      const o = new VideoFrame(t, {
        alpha: "keep",
        timestamp: r.timestamp,
        duration: r.duration ?? void 0
      });
      return r.close(), o;
    }
    return createImageBitmap(t, {
      imageOrientation: r instanceof ImageBitmap ? "flipY" : "none"
    });
  };
};
function _i(i) {
  return document.createElement(i);
}
function zi(i) {
  var t = "", e = new Uint8Array(i), n = e.byteLength;
  for (let a = 0; a < n; a++)
    t += String.fromCharCode(e[a]);
  return window.btoa(t);
}
async function Li(i, t, e = {}) {
  var f;
  const n = _i("pre");
  n.style.cssText = `margin: 0; ${t}; position: fixed;`, n.textContent = i, document.body.appendChild(n), (f = e.onCreated) == null || f.call(e, n);
  const { width: a, height: r } = n.getBoundingClientRect();
  n.remove();
  const o = new Image();
  o.width = a, o.height = r;
  const c = e.font == null ? "" : `
    @font-face {
      font-family: '${e.font.name}';
      src: url('data:font/woff2;base64,${zi(await (await fetch(e.font.url)).arrayBuffer())}') format('woff2');
    }
  `, l = `
    <svg xmlns="http://www.w3.org/2000/svg" width="${a}" height="${r}">
      <style>
        ${c}
      </style>
      <foreignObject width="100%" height="100%">
        <div xmlns="http://www.w3.org/1999/xhtml">${n.outerHTML}</div>
      </foreignObject>
    </svg>
  `.replace(/\t/g, "").replace(/#/g, "%23");
  return o.src = `data:image/svg+xml;charset=utf-8,${l}`, await new Promise((u) => {
    o.onload = u;
  }), o;
}
async function Fn(i, t, e = {}) {
  const n = await Li(i, t, e), a = new OffscreenCanvas(n.width, n.height), r = a.getContext("2d");
  return r == null || r.drawImage(n, 0, 0, n.width, n.height), await createImageBitmap(a);
}
function Vi(i) {
  const t = new Float32Array(
    i.map((n) => n.length).reduce((n, a) => n + a)
  );
  let e = 0;
  for (const n of i)
    t.set(n, e), e += n.length;
  return t;
}
function Ui(i) {
  const t = [];
  for (let e = 0; e < i.length; e += 1)
    for (let n = 0; n < i[e].length; n += 1)
      t[n] == null && (t[n] = []), t[n].push(i[e][n]);
  return t.map(Vi);
}
function ci(i) {
  if (i.format === "f32-planar") {
    const t = [];
    for (let e = 0; e < i.numberOfChannels; e += 1) {
      const n = i.allocationSize({ planeIndex: e }), a = new ArrayBuffer(n);
      i.copyTo(a, { planeIndex: e }), t.push(new Float32Array(a));
    }
    return t;
  } else if (i.format === "f32") {
    const t = new ArrayBuffer(i.allocationSize({ planeIndex: 0 }));
    return i.copyTo(t, { planeIndex: 0 }), $i(new Float32Array(t), i.numberOfChannels);
  } else if (i.format === "s16") {
    const t = new ArrayBuffer(i.allocationSize({ planeIndex: 0 }));
    return i.copyTo(t, { planeIndex: 0 }), Ni(new Int16Array(t), i.numberOfChannels);
  }
  throw Error("Unsupported audio data format");
}
function Ni(i, t) {
  const e = i.length / t, n = Array.from(
    { length: t },
    () => new Float32Array(e)
  );
  for (let a = 0; a < e; a++)
    for (let r = 0; r < t; r++) {
      const o = i[a * t + r];
      n[r][a] = o / 32768;
    }
  return n;
}
function $i(i, t) {
  const e = i.length / t, n = Array.from(
    { length: t },
    () => new Float32Array(e)
  );
  for (let a = 0; a < e; a++)
    for (let r = 0; r < t; r++)
      n[r][a] = i[a * t + r];
  return n;
}
function Ve(i) {
  return Array(i.numberOfChannels).fill(0).map((t, e) => i.getChannelData(e));
}
async function Hi(i, t) {
  var o;
  const e = {
    type: t,
    data: i
  }, n = new ImageDecoder(e);
  await Promise.all([n.completed, n.tracks.ready]);
  let a = ((o = n.tracks.selectedTrack) == null ? void 0 : o.frameCount) ?? 1;
  const r = [];
  for (let c = 0; c < a; c += 1)
    r.push((await n.decode({ frameIndex: c })).image);
  return r;
}
function Ye(i) {
  var n, a;
  const t = Math.max(...i.map((r) => {
    var o;
    return ((o = r[0]) == null ? void 0 : o.length) ?? 0;
  })), e = new Float32Array(t * 2);
  for (let r = 0; r < t; r++) {
    let o = 0, c = 0;
    for (let l = 0; l < i.length; l++) {
      const f = ((n = i[l][0]) == null ? void 0 : n[r]) ?? 0, u = ((a = i[l][1]) == null ? void 0 : a[r]) ?? f;
      o += f, c += u;
    }
    e[r] = o, e[r + t] = c;
  }
  return e;
}
async function Wi(i, t, e) {
  const n = i.length, a = Array(e.chanCount).fill(0).map(() => new Float32Array(0));
  if (n === 0) return a;
  const r = Math.max(...i.map((f) => f.length));
  if (r === 0) return a;
  if (globalThis.OfflineAudioContext == null)
    return i.map(
      (f) => new Float32Array(
        Ai.resample(f, t, e.rate, {
          method: "sinc",
          LPF: !1
        })
      )
    );
  const o = new globalThis.OfflineAudioContext(
    e.chanCount,
    r * e.rate / t,
    e.rate
  ), c = o.createBufferSource(), l = o.createBuffer(n, r, t);
  return i.forEach((f, u) => l.copyToChannel(f, u)), c.buffer = l, c.connect(o.destination), c.start(), Ve(await o.startRendering());
}
function Ue(i) {
  return new Promise((t) => {
    const e = Si(() => {
      e(), t();
    }, i);
  });
}
function De(i, t, e) {
  const n = e - t, a = new Float32Array(n);
  let r = 0;
  for (; r < n; )
    a[r] = i[(t + r) % i.length], r += 1;
  return a;
}
function li(i, t) {
  const e = Math.floor(i.length / t), n = new Float32Array(e);
  for (let a = 0; a < e; a++) {
    const r = a * t, o = Math.floor(r), c = r - o;
    o + 1 < i.length ? n[a] = i[o] * (1 - c) + i[o + 1] * c : n[a] = i[o];
  }
  return n;
}
const T = {
  sampleRate: 48e3,
  channelCount: 2,
  codec: "mp4a.40.2"
};
function Ne(i, t) {
  const e = t.videoTracks[0], n = {};
  if (e != null) {
    const r = Xi(i.getTrackById(e.id)).buffer, { descKey: o, type: c } = e.codec.startsWith("avc1") ? { descKey: "avcDecoderConfigRecord", type: "avc1" } : e.codec.startsWith("hvc1") ? { descKey: "hevcDecoderConfigRecord", type: "hvc1" } : { descKey: "", type: "" };
    o !== "" && (n.videoTrackConf = {
      timescale: e.timescale,
      duration: e.duration,
      width: e.video.width,
      height: e.video.height,
      brands: t.brands,
      type: c,
      [o]: r
    }), n.videoDecoderConf = {
      codec: e.codec,
      codedHeight: e.video.height,
      codedWidth: e.video.width,
      description: r instanceof Uint8Array ? r : new Uint8Array(r)
    };
  }
  const a = t.audioTracks[0];
  if (a != null) {
    const r = je(i);
    n.audioTrackConf = {
      timescale: a.timescale,
      samplerate: a.audio.sample_rate,
      channel_count: a.audio.channel_count,
      hdlr: "soun",
      type: a.codec.startsWith("mp4a") ? "mp4a" : a.codec,
      description: je(i)
    }, n.audioDecoderConf = {
      codec: a.codec.startsWith("mp4a") ? T.codec : a.codec,
      numberOfChannels: a.audio.channel_count,
      sampleRate: a.audio.sample_rate,
      ...r == null ? {} : Gi(r)
    };
  }
  return n;
}
function Xi(i) {
  for (const t of i.mdia.minf.stbl.stsd.entries) {
    const e = t.avcC ?? t.hvcC ?? t.av1C ?? t.vpcC;
    if (e != null) {
      const n = new mt.DataStream(
        void 0,
        0,
        mt.DataStream.BIG_ENDIAN
      );
      return e.write(n), new Uint8Array(n.buffer.slice(8));
    }
  }
  throw Error("avcC, hvcC, av1C or VPX not found");
}
function je(i, t = "mp4a") {
  var n;
  const e = (n = i.moov) == null ? void 0 : n.traks.map((a) => a.mdia.minf.stbl.stsd.entries).flat().find(({ type: a }) => a === t);
  return e == null ? void 0 : e.esds;
}
function Gi(i) {
  var c;
  const t = (c = i.esd.descs[0]) == null ? void 0 : c.descs[0];
  if (t == null) return {};
  const [e, n] = t.data, a = ((e & 7) << 1) + (n >> 7), r = (n & 127) >> 3;
  return {
    sampleRate: [
      96e3,
      88200,
      64e3,
      48e3,
      44100,
      32e3,
      24e3,
      22050,
      16e3,
      12e3,
      11025,
      8e3,
      7350
    ][a],
    numberOfChannels: r
  };
}
async function Ji(i, t, e) {
  const n = mt.createFile(!1);
  n.onReady = (r) => {
    var l, f;
    t({ mp4boxFile: n, info: r });
    const o = (l = r.videoTracks[0]) == null ? void 0 : l.id;
    o != null && n.setExtractionOptions(o, "video", { nbSamples: 100 });
    const c = (f = r.audioTracks[0]) == null ? void 0 : f.id;
    c != null && n.setExtractionOptions(c, "audio", { nbSamples: 100 }), n.start();
  }, n.onSamples = e, await a();
  async function a() {
    let r = 0;
    const o = 30 * 1024 * 1024;
    for (; ; ) {
      const c = await i.read(o, {
        at: r
      });
      if (c.byteLength === 0) break;
      c.fileStart = r;
      const l = n.appendBuffer(c);
      if (l == null) break;
      r = l;
    }
    n.stop();
  }
}
let $e = 0;
function Re(i) {
  return i.kind === "file" && i.createReader instanceof Function;
}
var Ce, Jt, Kt, V, E, H, Yt, U, st, Ot, yt, W, O, Bt;
const pt = class pt {
  constructor(t, e = {}) {
    d(this, Ce, $e++);
    d(this, Jt, k.create(`MP4Clip id:${s(this, Ce)},`));
    v(this, "ready");
    d(this, Kt, !1);
    d(this, V, {
      // 微秒
      duration: 0,
      width: 0,
      height: 0,
      audioSampleRate: 0,
      audioChanCount: 0
    });
    d(this, E);
    d(this, H, []);
    d(this, Yt, 1);
    d(this, U, []);
    d(this, st, []);
    d(this, Ot, null);
    d(this, yt, null);
    d(this, W, {
      video: null,
      audio: null
    });
    d(this, O, { audio: !0 });
    /**
     * 拦截 {@link MP4Clip.tick} 方法返回的数据，用于对图像、音频数据二次处理
     * @param time 调用 tick 的时间
     * @param tickRet tick 返回的数据
     *
     * @see [移除视频绿幕背景](https://webav-tech.github.io/WebAV/demo/3_2-chromakey-video)
     */
    v(this, "tickInterceptor", async (t, e) => e);
    d(this, Bt, new AbortController());
    if (!(t instanceof ReadableStream) && !Re(t) && !Array.isArray(t.videoSamples))
      throw Error("Illegal argument");
    h(this, O, { audio: !0, ...e }), h(this, Yt, typeof e.audio == "object" && "volume" in e.audio ? e.audio.volume : 1);
    const n = async (a) => (await Pe(s(this, E), a), s(this, E));
    h(this, E, Re(t) ? t : "localFile" in t ? t.localFile : Ee()), this.ready = (t instanceof ReadableStream ? n(t).then(
      (a) => qe(a, s(this, O))
    ) : Re(t) ? qe(t, s(this, O)) : Promise.resolve(t)).then(
      async ({ videoSamples: a, audioSamples: r, decoderConf: o, headerBoxPos: c }) => {
        h(this, U, a), h(this, st, r), h(this, W, o), h(this, H, c);
        const { videoFrameFinder: l, audioFrameFinder: f } = Yi(
          {
            video: o.video == null ? null : {
              ...o.video,
              hardwareAcceleration: s(this, O).__unsafe_hardwareAcceleration__
            },
            audio: o.audio
          },
          await s(this, E).createReader(),
          a,
          r,
          s(this, O).audio !== !1 ? s(this, Yt) : 0
        );
        return h(this, Ot, l), h(this, yt, f), h(this, V, Ki(o, a, r)), s(this, Jt).info("MP4Clip meta:", s(this, V)), { ...s(this, V) };
      }
    );
  }
  get meta() {
    return { ...s(this, V) };
  }
  /**
   * 提供视频头（box: ftyp, moov）的二进制数据
   * 使用任意 mp4 demxer 解析即可获得详细的视频信息
   * 单元测试包含使用 mp4box.js 解析示例代码
   */
  async getFileHeaderBinData() {
    await this.ready;
    const t = await s(this, E).getOriginFile();
    if (t == null) throw Error("MP4Clip localFile is not origin file");
    return await new Blob(
      s(this, H).map(
        ({ start: e, size: n }) => t.slice(e, e + n)
      )
    ).arrayBuffer();
  }
  /**
   * 获取素材指定时刻的图像帧、音频数据
   * @param time 微秒
   */
  async tick(t) {
    var a, r, o;
    if (t >= s(this, V).duration)
      return await this.tickInterceptor(t, {
        audio: await ((a = s(this, yt)) == null ? void 0 : a.find(t)) ?? [],
        state: "done"
      });
    const [e, n] = await Promise.all([
      ((r = s(this, yt)) == null ? void 0 : r.find(t)) ?? [],
      (o = s(this, Ot)) == null ? void 0 : o.find(t)
    ]);
    return n == null ? await this.tickInterceptor(t, {
      audio: e,
      state: "success"
    }) : await this.tickInterceptor(t, {
      video: n,
      audio: e,
      state: "success"
    });
  }
  /**
   * 生成缩略图，默认每个关键帧生成一个 100px 宽度的缩略图。
   *
   * @param imgWidth 缩略图宽度，默认 100
   * @param opts Partial<ThumbnailOpts>
   * @returns Promise<Array<{ ts: number; img: Blob }>>
   */
  async thumbnails(t = 100, e) {
    s(this, Bt).abort(), h(this, Bt, new AbortController());
    const n = s(this, Bt).signal;
    await this.ready;
    const a = "generate thumbnails aborted";
    if (n.aborted) throw Error(a);
    const { width: r, height: o } = s(this, V), c = tn(
      t,
      Math.round(o * (t / r)),
      { quality: 0.1, type: "image/png" }
    );
    return new Promise(
      async (l, f) => {
        let u = [];
        const w = s(this, W).video;
        if (w == null || s(this, U).length === 0) {
          m();
          return;
        }
        n.addEventListener("abort", () => {
          f(Error(a));
        });
        async function m() {
          n.aborted || l(
            await Promise.all(
              u.map(async (b) => ({
                ts: b.ts,
                img: await b.img
              }))
            )
          );
        }
        function x(b) {
          u.push({
            ts: b.timestamp,
            img: c(b)
          });
        }
        const { start: p = 0, end: g = s(this, V).duration, step: y } = e ?? {};
        if (y) {
          let b = p;
          const C = new hi(
            await s(this, E).createReader(),
            s(this, U),
            {
              ...w,
              hardwareAcceleration: s(this, O).__unsafe_hardwareAcceleration__
            }
          );
          for (; b <= g && !n.aborted; ) {
            const S = await C.find(b);
            S && x(S), b += y;
          }
          C.destroy(), m();
        } else
          await an(
            s(this, U),
            s(this, E),
            w,
            n,
            { start: p, end: g },
            (b, C) => {
              b != null && x(b), C && m();
            }
          );
      }
    );
  }
  async split(t) {
    if (await this.ready, t <= 0 || t >= s(this, V).duration)
      throw Error('"time" out of bounds');
    const [e, n] = en(
      s(this, U),
      t
    ), [a, r] = nn(
      s(this, st),
      t
    ), o = new pt(
      {
        localFile: s(this, E),
        videoSamples: e ?? [],
        audioSamples: a ?? [],
        decoderConf: s(this, W),
        headerBoxPos: s(this, H)
      },
      s(this, O)
    ), c = new pt(
      {
        localFile: s(this, E),
        videoSamples: n ?? [],
        audioSamples: r ?? [],
        decoderConf: s(this, W),
        headerBoxPos: s(this, H)
      },
      s(this, O)
    );
    return await Promise.all([o.ready, c.ready]), [o, c];
  }
  async clone() {
    await this.ready;
    const t = new pt(
      {
        localFile: s(this, E),
        videoSamples: [...s(this, U)],
        audioSamples: [...s(this, st)],
        decoderConf: s(this, W),
        headerBoxPos: s(this, H)
      },
      s(this, O)
    );
    return await t.ready, t.tickInterceptor = this.tickInterceptor, t;
  }
  /**
   * 拆分 MP4Clip 为仅包含视频轨道和音频轨道的 MP4Clip
   * @returns Mp4CLip[]
   */
  async splitTrack() {
    await this.ready;
    const t = [];
    if (s(this, U).length > 0) {
      const e = new pt(
        {
          localFile: s(this, E),
          videoSamples: [...s(this, U)],
          audioSamples: [],
          decoderConf: {
            video: s(this, W).video,
            audio: null
          },
          headerBoxPos: s(this, H)
        },
        s(this, O)
      );
      await e.ready, e.tickInterceptor = this.tickInterceptor, t.push(e);
    }
    if (s(this, st).length > 0) {
      const e = new pt(
        {
          localFile: s(this, E),
          videoSamples: [],
          audioSamples: [...s(this, st)],
          decoderConf: {
            audio: s(this, W).audio,
            video: null
          },
          headerBoxPos: s(this, H)
        },
        s(this, O)
      );
      await e.ready, e.tickInterceptor = this.tickInterceptor, t.push(e);
    }
    return t;
  }
  destroy() {
    var t, e;
    s(this, Kt) || (s(this, Jt).info("MP4Clip destroy"), h(this, Kt, !0), (t = s(this, Ot)) == null || t.destroy(), (e = s(this, yt)) == null || e.destroy());
  }
};
Ce = new WeakMap(), Jt = new WeakMap(), Kt = new WeakMap(), V = new WeakMap(), E = new WeakMap(), H = new WeakMap(), Yt = new WeakMap(), U = new WeakMap(), st = new WeakMap(), Ot = new WeakMap(), yt = new WeakMap(), W = new WeakMap(), O = new WeakMap(), Bt = new WeakMap();
let Qe = pt;
function Ki(i, t, e) {
  const n = {
    duration: 0,
    width: 0,
    height: 0,
    audioSampleRate: 0,
    audioChanCount: 0
  };
  i.video != null && t.length > 0 && (n.width = i.video.codedWidth ?? 0, n.height = i.video.codedHeight ?? 0), i.audio != null && e.length > 0 && (n.audioSampleRate = T.sampleRate, n.audioChanCount = T.channelCount);
  let a = 0, r = 0;
  if (t.length > 0)
    for (let o = t.length - 1; o >= 0; o--) {
      const c = t[o];
      if (!c.deleted) {
        a = c.cts + c.duration;
        break;
      }
    }
  if (e.length > 0) {
    const o = e.at(-1);
    r = o.cts + o.duration;
  }
  return n.duration = Math.max(a, r), n;
}
function Yi(i, t, e, n, a) {
  return {
    audioFrameFinder: a === 0 || i.audio == null || n.length === 0 ? null : new Qi(
      t,
      n,
      i.audio,
      {
        volume: a,
        targetSampleRate: T.sampleRate
      }
    ),
    videoFrameFinder: i.video == null || e.length === 0 ? null : new hi(
      t,
      e,
      i.video
    )
  };
}
async function qe(i, t = {}) {
  let e = null;
  const n = { video: null, audio: null };
  let a = [], r = [], o = [], c = -1, l = -1;
  const f = await i.createReader();
  await Ji(
    f,
    (m) => {
      e = m.info;
      const x = m.mp4boxFile.ftyp;
      o.push({ start: x.start, size: x.size });
      const p = m.mp4boxFile.moov;
      o.push({ start: p.start, size: p.size });
      let { videoDecoderConf: g, audioDecoderConf: y } = Ne(
        m.mp4boxFile,
        m.info
      );
      n.video = g ?? null, n.audio = y ?? null, g == null && y == null && k.error("MP4Clip no video and audio track"), k.info(
        "mp4BoxFile moov ready",
        {
          ...m.info,
          tracks: null,
          videoTracks: null,
          audioTracks: null
        },
        n
      );
    },
    (m, x, p) => {
      if (x === "video") {
        c === -1 && (c = p[0].dts);
        for (const g of p)
          a.push(w(g, c, "video"));
      } else if (x === "audio" && t.audio) {
        l === -1 && (l = p[0].dts);
        for (const g of p)
          r.push(w(g, l, "audio"));
      }
    }
  ), await f.close();
  const u = a.at(-1) ?? r.at(-1);
  if (e == null)
    throw Error("MP4Clip stream is done, but not emit ready");
  if (u == null)
    throw Error("MP4Clip stream not contain any sample");
  return Be(a), k.info("mp4 stream parsed"), {
    videoSamples: a,
    audioSamples: r,
    decoderConf: n,
    headerBoxPos: o
  };
  function w(m, x = 0, p) {
    const g = p === "video" && m.is_sync ? sn(m.data, m.description.type) : -1;
    let y = m.offset, b = m.size;
    return g >= 0 && (y += g, b -= g), {
      ...m,
      is_idr: g >= 0,
      offset: y,
      size: b,
      cts: (m.cts - x) / m.timescale * 1e6,
      dts: (m.dts - x) / m.timescale * 1e6,
      duration: m.duration / m.timescale * 1e6,
      timescale: 1e6,
      // 音频数据量可控，直接保存在内存中
      data: p === "video" ? null : m.data
    };
  }
}
var R, gt, bt, jt, xt, X, M, at, Ct, Mt, Qt, _t, rt, qt, vt, Zt;
class hi {
  constructor(t, e, n) {
    d(this, R, null);
    d(this, gt, 0);
    d(this, bt, { abort: !1, st: performance.now() });
    v(this, "find", async (t) => {
      (s(this, R) == null || s(this, R).state === "closed" || t <= s(this, gt) || t - s(this, gt) > 3e6) && s(this, vt).call(this, t), s(this, bt).abort = !0, h(this, gt, t), h(this, bt, { abort: !1, st: performance.now() });
      const e = await s(this, _t).call(this, t, s(this, R), s(this, bt));
      return h(this, Mt, 0), e;
    });
    // fix VideoFrame duration is null
    d(this, jt, 0);
    d(this, xt, !1);
    d(this, X, 0);
    d(this, M, []);
    d(this, at, 0);
    d(this, Ct, 0);
    d(this, Mt, 0);
    d(this, Qt, !1);
    d(this, _t, async (t, e, n) => {
      if (e == null || e.state === "closed" || n.abort) return null;
      if (s(this, M).length > 0) {
        const a = s(this, M)[0];
        return t < a.timestamp ? null : (s(this, M).shift(), t > a.timestamp + (a.duration ?? 0) ? (a.close(), await s(this, _t).call(this, t, e, n)) : (!s(this, Qt) && s(this, M).length < 10 && s(this, qt).call(this, e).catch((r) => {
          throw h(this, Qt, !0), s(this, vt).call(this, t), r;
        }), a));
      }
      if (s(this, rt) || s(this, at) < s(this, Ct) && e.decodeQueueSize > 0) {
        if (performance.now() - n.st > 6e3)
          throw Error(
            `MP4Clip.tick video timeout, ${JSON.stringify(s(this, Zt).call(this))}`
          );
        h(this, Mt, s(this, Mt) + 1), await Ue(15);
      } else {
        if (s(this, X) >= this.samples.length)
          return null;
        try {
          await s(this, qt).call(this, e);
        } catch (a) {
          throw s(this, vt).call(this, t), a;
        }
      }
      return await s(this, _t).call(this, t, e, n);
    });
    d(this, rt, !1);
    d(this, qt, async (t) => {
      var a, r;
      if (s(this, rt) || t.decodeQueueSize > 600) return;
      let e = s(this, X) + 1;
      if (e > this.samples.length) return;
      h(this, rt, !0);
      let n = !1;
      for (; e < this.samples.length; e++) {
        const o = this.samples[e];
        if (!n && !o.deleted && (n = !0), o.is_idr) break;
      }
      if (n) {
        const o = this.samples.slice(s(this, X), e);
        if (((a = o[0]) == null ? void 0 : a.is_idr) !== !0)
          k.warn("First sample not idr frame");
        else {
          const c = performance.now(), l = await ui(o, this.localFileReader), f = performance.now() - c;
          if (f > 1e3) {
            const u = o[0], w = o.at(-1), m = w.offset + w.size - u.offset;
            k.warn(
              `Read video samples time cost: ${Math.round(f)}ms, file chunk size: ${m}`
            );
          }
          if (t.state === "closed") return;
          h(this, jt, ((r = l[0]) == null ? void 0 : r.duration) ?? 0), Oe(t, l, {
            onDecodingError: (u) => {
              if (s(this, xt))
                throw u;
              s(this, at) === 0 && (h(this, xt, !0), k.warn("Downgrade to software decode"), s(this, vt).call(this));
            }
          }), h(this, Ct, s(this, Ct) + l.length);
        }
      }
      h(this, X, e), h(this, rt, !1);
    });
    d(this, vt, (t) => {
      var n, a;
      if (h(this, rt, !1), s(this, M).forEach((r) => r.close()), h(this, M, []), t == null || t === 0)
        h(this, X, 0);
      else {
        let r = 0;
        for (let o = 0; o < this.samples.length; o++) {
          const c = this.samples[o];
          if (c.is_idr && (r = o), !(c.cts < t)) {
            h(this, X, r);
            break;
          }
        }
      }
      h(this, Ct, 0), h(this, at, 0), ((n = s(this, R)) == null ? void 0 : n.state) !== "closed" && ((a = s(this, R)) == null || a.close());
      const e = {
        ...this.conf,
        ...s(this, xt) ? { hardwareAcceleration: "prefer-software" } : {}
      };
      h(this, R, new VideoDecoder({
        output: (r) => {
          if (h(this, at, s(this, at) + 1), r.timestamp === -1) {
            r.close();
            return;
          }
          let o = r;
          r.duration == null && (o = new VideoFrame(r, {
            duration: s(this, jt)
          }), r.close()), s(this, M).push(o);
        },
        error: (r) => {
          if (r.message.includes("Codec reclaimed due to inactivity")) {
            h(this, R, null), k.warn(r.message);
            return;
          }
          const o = `VideoFinder VideoDecoder err: ${r.message}, config: ${JSON.stringify(e)}, state: ${JSON.stringify(s(this, Zt).call(this))}`;
          throw k.error(o), Error(o);
        }
      })), s(this, R).configure(e);
    });
    d(this, Zt, () => {
      var t, e;
      return {
        time: s(this, gt),
        decState: (t = s(this, R)) == null ? void 0 : t.state,
        decQSize: (e = s(this, R)) == null ? void 0 : e.decodeQueueSize,
        decCusorIdx: s(this, X),
        sampleLen: this.samples.length,
        inputCnt: s(this, Ct),
        outputCnt: s(this, at),
        cacheFrameLen: s(this, M).length,
        softDeocde: s(this, xt),
        clipIdCnt: $e,
        sleepCnt: s(this, Mt),
        memInfo: di()
      };
    });
    v(this, "destroy", () => {
      var t, e;
      ((t = s(this, R)) == null ? void 0 : t.state) !== "closed" && ((e = s(this, R)) == null || e.close()), h(this, R, null), s(this, bt).abort = !0, s(this, M).forEach((n) => n.close()), h(this, M, []), this.localFileReader.close();
    });
    this.localFileReader = t, this.samples = e, this.conf = n;
  }
}
R = new WeakMap(), gt = new WeakMap(), bt = new WeakMap(), jt = new WeakMap(), xt = new WeakMap(), X = new WeakMap(), M = new WeakMap(), at = new WeakMap(), Ct = new WeakMap(), Mt = new WeakMap(), Qt = new WeakMap(), _t = new WeakMap(), rt = new WeakMap(), qt = new WeakMap(), vt = new WeakMap(), Zt = new WeakMap();
function ji(i, t) {
  for (let e = 0; e < t.length; e++) {
    const n = t[e];
    if (i >= n.cts && i < n.cts + n.duration)
      return e;
    if (n.cts > i) break;
  }
  return 0;
}
var te, ee, N, St, G, tt, z, zt, ie, ne, ve, Se;
class Qi {
  constructor(t, e, n, a) {
    d(this, te, 1);
    d(this, ee);
    d(this, N, null);
    d(this, St, { abort: !1, st: performance.now() });
    v(this, "find", async (t) => {
      const e = t <= s(this, G) || t - s(this, G) > 1e5;
      (s(this, N) == null || s(this, N).state === "closed" || e) && s(this, ve).call(this), e && (h(this, G, t), h(this, tt, ji(t, this.samples))), s(this, St).abort = !0;
      const n = t - s(this, G);
      h(this, G, t), h(this, St, { abort: !1, st: performance.now() });
      const a = await s(this, ie).call(this, Math.ceil(n * (s(this, ee) / 1e6)), s(this, N), s(this, St));
      return h(this, zt, 0), a;
    });
    d(this, G, 0);
    d(this, tt, 0);
    d(this, z, {
      frameCnt: 0,
      data: []
    });
    d(this, zt, 0);
    d(this, ie, async (t, e = null, n) => {
      if (e == null || n.abort || e.state === "closed" || t === 0)
        return [];
      const a = s(this, z).frameCnt - t;
      if (a > 0)
        return a < T.sampleRate / 10 && s(this, ne).call(this, e), Ze(s(this, z), t);
      if (e.decoding) {
        if (performance.now() - n.st > 3e3)
          throw n.abort = !0, Error(
            `MP4Clip.tick audio timeout, ${JSON.stringify(s(this, Se).call(this))}`
          );
        h(this, zt, s(this, zt) + 1), await Ue(15);
      } else {
        if (s(this, tt) >= this.samples.length - 1)
          return Ze(s(this, z), s(this, z).frameCnt);
        s(this, ne).call(this, e);
      }
      return s(this, ie).call(this, t, e, n);
    });
    d(this, ne, (t) => {
      if (t.decodeQueueSize > 10) return;
      const n = [];
      let a = s(this, tt);
      for (; a < this.samples.length; ) {
        const r = this.samples[a];
        if (a += 1, !r.deleted && (n.push(r), n.length >= 10))
          break;
      }
      h(this, tt, a), t.decode(
        n.map(
          (r) => new EncodedAudioChunk({
            type: "key",
            timestamp: r.cts,
            duration: r.duration,
            data: r.data
          })
        )
      );
    });
    d(this, ve, () => {
      var t;
      h(this, G, 0), h(this, tt, 0), h(this, z, {
        frameCnt: 0,
        data: []
      }), (t = s(this, N)) == null || t.close(), h(this, N, qi(
        this.conf,
        {
          resampleRate: T.sampleRate,
          volume: s(this, te)
        },
        (e) => {
          s(this, z).data.push(e), s(this, z).frameCnt += e[0].length;
        }
      ));
    });
    d(this, Se, () => {
      var t, e;
      return {
        time: s(this, G),
        decState: (t = s(this, N)) == null ? void 0 : t.state,
        decQSize: (e = s(this, N)) == null ? void 0 : e.decodeQueueSize,
        decCusorIdx: s(this, tt),
        sampleLen: this.samples.length,
        pcmLen: s(this, z).frameCnt,
        clipIdCnt: $e,
        sleepCnt: s(this, zt),
        memInfo: di()
      };
    });
    v(this, "destroy", () => {
      h(this, N, null), s(this, St).abort = !0, h(this, z, {
        frameCnt: 0,
        data: []
      }), this.localFileReader.close();
    });
    this.localFileReader = t, this.samples = e, this.conf = n, h(this, te, a.volume), h(this, ee, a.targetSampleRate);
  }
}
te = new WeakMap(), ee = new WeakMap(), N = new WeakMap(), St = new WeakMap(), G = new WeakMap(), tt = new WeakMap(), z = new WeakMap(), zt = new WeakMap(), ie = new WeakMap(), ne = new WeakMap(), ve = new WeakMap(), Se = new WeakMap();
function qi(i, t, e) {
  let n = 0, a = 0;
  const r = (u) => {
    if (a += 1, u.length !== 0) {
      if (t.volume !== 1)
        for (const w of u)
          for (let m = 0; m < w.length; m++) w[m] *= t.volume;
      u.length === 1 && (u = [u[0], u[0]]), e(u);
    }
  }, o = Zi(r), c = t.resampleRate !== i.sampleRate;
  let l = new AudioDecoder({
    output: (u) => {
      const w = ci(u);
      c ? o(
        () => Wi(w, u.sampleRate, {
          rate: t.resampleRate,
          chanCount: u.numberOfChannels
        })
      ) : r(w), u.close();
    },
    error: (u) => {
      u.message.includes("Codec reclaimed due to inactivity") || f("MP4Clip AudioDecoder err", u);
    }
  });
  l.configure(i);
  function f(u, w) {
    const m = `${u}: ${w.message}, state: ${JSON.stringify(
      {
        qSize: l.decodeQueueSize,
        state: l.state,
        inputCnt: n,
        outputCnt: a
      }
    )}`;
    throw k.error(m), Error(m);
  }
  return {
    decode(u) {
      n += u.length;
      try {
        for (const w of u) l.decode(w);
      } catch (w) {
        f("decode audio chunk error", w);
      }
    },
    close() {
      l.state !== "closed" && l.close();
    },
    get decoding() {
      return n > a && l.decodeQueueSize > 0;
    },
    get state() {
      return l.state;
    },
    get decodeQueueSize() {
      return l.decodeQueueSize;
    }
  };
}
function Zi(i) {
  const t = [];
  let e = 0;
  function n(o, c) {
    t[c] = o, a();
  }
  function a() {
    const o = t[e];
    o != null && (i(o), e += 1, a());
  }
  let r = 0;
  return (o) => {
    const c = r;
    r += 1, o().then((l) => n(l, c)).catch((l) => n(l, c));
  };
}
function Ze(i, t) {
  const e = [new Float32Array(t), new Float32Array(t)];
  let n = 0, a = 0;
  for (; a < i.data.length; ) {
    const [r, o] = i.data[a];
    if (n + r.length > t) {
      const c = t - n;
      e[0].set(r.subarray(0, c), n), e[1].set(o.subarray(0, c), n), i.data[a][0] = r.subarray(c, r.length), i.data[a][1] = o.subarray(c, o.length);
      break;
    } else
      e[0].set(r, n), e[1].set(o, n), n += r.length, a++;
  }
  return i.data = i.data.slice(a), i.frameCnt -= t, e;
}
async function ui(i, t) {
  const e = i[0], n = i.at(-1);
  if (n == null) return [];
  const a = n.offset + n.size - e.offset;
  if (a < 3e7) {
    const r = new Uint8Array(
      await t.read(a, { at: e.offset })
    );
    return i.map((o) => {
      const c = o.offset - e.offset;
      return new EncodedVideoChunk({
        type: o.is_sync ? "key" : "delta",
        timestamp: o.cts,
        duration: o.duration,
        data: r.subarray(c, c + o.size)
      });
    });
  }
  return await Promise.all(
    i.map(async (r) => new EncodedVideoChunk({
      type: r.is_sync ? "key" : "delta",
      timestamp: r.cts,
      duration: r.duration,
      data: await t.read(r.size, {
        at: r.offset
      })
    }))
  );
}
function tn(i, t, e) {
  const n = new OffscreenCanvas(i, t), a = n.getContext("2d");
  return async (r) => (a.drawImage(r, 0, 0, i, t), r.close(), await n.convertToBlob(e));
}
function en(i, t) {
  if (i.length === 0) return [];
  let e = 0, n = 0, a = -1;
  for (let l = 0; l < i.length; l++) {
    const f = i[l];
    if (a === -1 && t < f.cts && (a = l - 1), f.is_idr)
      if (a === -1)
        e = l;
      else {
        n = l;
        break;
      }
  }
  const r = i[a];
  if (r == null) throw Error("Not found video sample by time");
  const o = i.slice(0, n === 0 ? i.length : n).map((l) => ({ ...l }));
  for (let l = e; l < o.length; l++) {
    const f = o[l];
    t < f.cts && (f.deleted = !0, f.cts = -1);
  }
  Be(o);
  const c = i.slice(r.is_idr ? a : e).map((l) => ({ ...l, cts: l.cts - t }));
  for (const l of c)
    l.cts < 0 && (l.deleted = !0, l.cts = -1);
  return Be(c), [o, c];
}
function nn(i, t) {
  if (i.length === 0) return [];
  let e = -1;
  for (let r = 0; r < i.length; r++) {
    const o = i[r];
    if (!(t > o.cts)) {
      e = r;
      break;
    }
  }
  if (e === -1) throw Error("Not found audio sample by time");
  const n = i.slice(0, e).map((r) => ({ ...r })), a = i.slice(e).map((r) => ({ ...r, cts: r.cts - t }));
  return [n, a];
}
function Oe(i, t, e) {
  let n = 0;
  if (i.state === "configured") {
    for (; n < t.length; n++) i.decode(t[n]);
    i.flush().catch((a) => {
      if (!(a instanceof Error)) throw a;
      if (a.message.includes("Decoding error") && e.onDecodingError != null) {
        e.onDecodingError(a);
        return;
      }
      if (!a.message.includes("Aborted due to close"))
        throw a;
    });
  }
}
function sn(i, t) {
  if (t !== "avc1" && t !== "hvc1") return 0;
  const e = new DataView(i.buffer);
  let n = 0;
  for (; n < i.byteLength - 4; ) {
    if (t === "avc1" && (e.getUint8(n + 4) & 31) === 5)
      return n;
    if (t === "hvc1") {
      const a = e.getUint8(n + 4) >> 1 & 63;
      if (a === 19 || a === 20) return n;
    }
    n += e.getUint32(n) + 4;
  }
  return -1;
}
async function an(i, t, e, n, a, r) {
  const o = await t.createReader(), c = await ui(
    i.filter(
      (u) => !u.deleted && u.is_sync && u.cts >= a.start && u.cts <= a.end
    ),
    o
  );
  if (c.length === 0 || n.aborted) return;
  let l = 0;
  Oe(f(), c, {
    onDecodingError: (u) => {
      k.warn("thumbnailsByKeyFrame", u), l === 0 ? Oe(f(!0), c, {
        onDecodingError: (w) => {
          o.close(), k.error("thumbnailsByKeyFrame retry soft deocde", w);
        }
      }) : (r(null, !0), o.close());
    }
  });
  function f(u = !1) {
    const w = {
      ...e,
      ...u ? { hardwareAcceleration: "prefer-software" } : {}
    }, m = new VideoDecoder({
      output: (x) => {
        l += 1;
        const p = l === c.length;
        r(x, p), p && (o.close(), m.state !== "closed" && m.close());
      },
      error: (x) => {
        const p = `thumbnails decoder error: ${x.message}, config: ${JSON.stringify(w)}, state: ${JSON.stringify(
          {
            qSize: m.decodeQueueSize,
            state: m.state,
            outputCnt: l,
            inputCnt: c.length
          }
        )}`;
        throw k.error(p), Error(p);
      }
    });
    return n.addEventListener("abort", () => {
      o.close(), m.state !== "closed" && m.close();
    }), m.configure(w), m;
  }
}
function Be(i) {
  let t = 0, e = null;
  for (const n of i)
    if (!n.deleted) {
      if (n.is_sync && (t += 1), t >= 2) break;
      (e == null || n.cts < e.cts) && (e = n);
    }
  e != null && e.cts < 2e5 && (e.duration += e.cts, e.cts = 0);
}
function di() {
  try {
    const i = performance.memory;
    return {
      jsHeapSizeLimit: i.jsHeapSizeLimit,
      totalJSHeapSize: i.totalJSHeapSize,
      usedJSHeapSize: i.usedJSHeapSize,
      percentUsed: (i.usedJSHeapSize / i.jsHeapSizeLimit).toFixed(3),
      percentTotal: (i.totalJSHeapSize / i.jsHeapSizeLimit).toFixed(3)
    };
  } catch {
    return {};
  }
}
var P, L, F, Te, fi;
const wt = class wt {
  /**
   * 静态图片可使用流、ImageBitmap 初始化
   *
   * 动图需要使用 VideoFrame[] 或提供图片类型
   */
  constructor(t) {
    d(this, Te);
    v(this, "ready");
    d(this, P, {
      // 微秒
      duration: 0,
      width: 0,
      height: 0
    });
    d(this, L, null);
    d(this, F, []);
    v(this, "tickInterceptor", async (t, e) => e);
    const e = (n) => (h(this, L, n), s(this, P).width = n.width, s(this, P).height = n.height, s(this, P).duration = 1 / 0, { ...s(this, P) });
    if (t instanceof ReadableStream)
      this.ready = new Response(t).blob().then((n) => createImageBitmap(n)).then(e);
    else if (t instanceof ImageBitmap)
      this.ready = Promise.resolve(e(t));
    else if (Array.isArray(t) && t.every((n) => n instanceof VideoFrame)) {
      h(this, F, t);
      const n = s(this, F)[0];
      if (n == null) throw Error("The frame count must be greater than 0");
      h(this, P, {
        width: n.displayWidth,
        height: n.displayHeight,
        duration: s(this, F).reduce(
          (a, r) => a + (r.duration ?? 0),
          0
        )
      }), this.ready = Promise.resolve({ ...s(this, P), duration: 1 / 0 });
    } else if ("type" in t)
      this.ready = B(this, Te, fi).call(this, t.stream, t.type).then(() => ({
        width: s(this, P).width,
        height: s(this, P).height,
        duration: 1 / 0
      }));
    else
      throw Error("Illegal arguments");
  }
  /**
   * ⚠️ 静态图片的 duration 为 Infinity
   *
   * 使用 Sprite 包装时需要将它的 duration 设置为有限数
   *
   */
  get meta() {
    return { ...s(this, P) };
  }
  async tick(t) {
    if (s(this, L) != null)
      return await this.tickInterceptor(t, {
        video: await createImageBitmap(s(this, L)),
        state: "success"
      });
    const e = t % s(this, P).duration;
    return await this.tickInterceptor(t, {
      video: (s(this, F).find(
        (n) => e >= n.timestamp && e <= n.timestamp + (n.duration ?? 0)
      ) ?? s(this, F)[0]).clone(),
      state: "success"
    });
  }
  async split(t) {
    if (await this.ready, s(this, L) != null)
      return [
        new wt(await createImageBitmap(s(this, L))),
        new wt(await createImageBitmap(s(this, L)))
      ];
    let e = -1;
    for (let r = 0; r < s(this, F).length; r++) {
      const o = s(this, F)[r];
      if (!(t > o.timestamp)) {
        e = r;
        break;
      }
    }
    if (e === -1) throw Error("Not found frame by time");
    const n = s(this, F).slice(0, e).map((r) => new VideoFrame(r)), a = s(this, F).slice(e).map(
      (r) => new VideoFrame(r, {
        timestamp: r.timestamp - t
      })
    );
    return [new wt(n), new wt(a)];
  }
  async clone() {
    await this.ready;
    const t = s(this, L) == null ? s(this, F).map((e) => e.clone()) : await createImageBitmap(s(this, L));
    return new wt(t);
  }
  destroy() {
    var t;
    k.info("ImgClip destroy"), (t = s(this, L)) == null || t.close(), s(this, F).forEach((e) => e.close());
  }
};
P = new WeakMap(), L = new WeakMap(), F = new WeakMap(), Te = new WeakSet(), fi = async function(t, e) {
  h(this, F, await Hi(t, e));
  const n = s(this, F)[0];
  if (n == null) throw Error("No frame available in gif");
  h(this, P, {
    duration: s(this, F).reduce((a, r) => a + (r.duration ?? 0), 0),
    width: n.codedWidth,
    height: n.codedHeight
  }), k.info("ImgClip ready:", s(this, P));
};
let ti = wt;
var Tt, et, ot, J, Ae, mi, ct, K;
const Z = class Z {
  /**
   *
   * @param dataSource 音频文件流
   * @param opts 音频配置，控制音量、是否循环
   */
  constructor(t, e = {}) {
    d(this, Ae);
    v(this, "ready");
    d(this, Tt, {
      // 微秒
      duration: 0,
      width: 0,
      height: 0
    });
    d(this, et, new Float32Array());
    d(this, ot, new Float32Array());
    d(this, J);
    /**
     * 拦截 {@link AudioClip.tick} 方法返回的数据，用于对音频数据二次处理
     * @param time 调用 tick 的时间
     * @param tickRet tick 返回的数据
     *
     * @see [移除视频绿幕背景](https://webav-tech.github.io/WebAV/demo/3_2-chromakey-video)
     */
    v(this, "tickInterceptor", async (t, e) => e);
    // 微秒
    d(this, ct, 0);
    d(this, K, 0);
    h(this, J, {
      loop: !1,
      volume: 1,
      ...e
    }), this.ready = B(this, Ae, mi).call(this, t).then(() => ({
      // audio 没有宽高，无需绘制
      width: 0,
      height: 0,
      duration: e.loop ? 1 / 0 : s(this, Tt).duration
    }));
  }
  /**
   * 音频元信息
   *
   * ⚠️ 注意，这里是转换后（标准化）的元信息，非原始音频元信息
   */
  get meta() {
    return {
      ...s(this, Tt),
      sampleRate: T.sampleRate,
      chanCount: 2
    };
  }
  /**
   * 获取音频素材完整的 PCM 数据
   */
  getPCMData() {
    return [s(this, et), s(this, ot)];
  }
  /**
   * 返回上次与当前时刻差对应的音频 PCM 数据；
   *
   * 若差值超过 3s 或当前时间小于上次时间，则重置状态
   * @example
   * tick(0) // => []
   * tick(1e6) // => [leftChanPCM(1s), rightChanPCM(1s)]
   *
   */
  async tick(t) {
    if (!s(this, J).loop && t >= s(this, Tt).duration)
      return await this.tickInterceptor(t, { audio: [], state: "done" });
    const e = t - s(this, ct);
    if (t < s(this, ct) || e > 3e6)
      return h(this, ct, t), h(this, K, Math.ceil(
        s(this, ct) / 1e6 * T.sampleRate
      )), await this.tickInterceptor(t, {
        audio: [new Float32Array(0), new Float32Array(0)],
        state: "success"
      });
    h(this, ct, t);
    const n = Math.ceil(
      e / 1e6 * T.sampleRate
    ), a = s(this, K) + n, r = s(this, J).loop ? [
      De(s(this, et), s(this, K), a),
      De(s(this, ot), s(this, K), a)
    ] : [
      s(this, et).slice(s(this, K), a),
      s(this, ot).slice(s(this, K), a)
    ];
    return h(this, K, a), await this.tickInterceptor(t, { audio: r, state: "success" });
  }
  /**
   * 按指定时间切割，返回前后两个音频素材
   * @param time 时间，单位微秒
   */
  async split(t) {
    await this.ready;
    const e = Math.ceil(t / 1e6 * T.sampleRate), n = new Z(
      this.getPCMData().map((r) => r.slice(0, e)),
      s(this, J)
    ), a = new Z(
      this.getPCMData().map((r) => r.slice(e)),
      s(this, J)
    );
    return [n, a];
  }
  async clone() {
    await this.ready;
    const t = new Z(this.getPCMData(), s(this, J));
    return await t.ready, t;
  }
  /**
   * 销毁实例，释放资源
   */
  destroy() {
    h(this, et, new Float32Array(0)), h(this, ot, new Float32Array(0)), k.info("---- audioclip destroy ----");
  }
};
Tt = new WeakMap(), et = new WeakMap(), ot = new WeakMap(), J = new WeakMap(), Ae = new WeakSet(), mi = async function(t) {
  Z.ctx == null && (Z.ctx = new AudioContext({
    sampleRate: T.sampleRate
  }));
  const e = performance.now(), n = t instanceof ReadableStream ? await rn(t, Z.ctx) : t;
  k.info("Audio clip decoded complete:", performance.now() - e);
  const a = s(this, J).volume;
  if (a !== 1)
    for (const r of n)
      for (let o = 0; o < r.length; o += 1) r[o] *= a;
  s(this, Tt).duration = n[0].length / T.sampleRate * 1e6, h(this, et, n[0]), h(this, ot, n[1] ?? s(this, et)), k.info(
    "Audio clip convert to AudioData, time:",
    performance.now() - e
  );
}, ct = new WeakMap(), K = new WeakMap(), v(Z, "ctx", null);
let ei = Z;
async function rn(i, t) {
  const e = await new Response(i).arrayBuffer();
  return Ve(await t.decodeAudioData(e));
}
var At, se, Lt, Vt;
const ke = class ke {
  constructor(t) {
    v(this, "ready");
    d(this, At, {
      // 微秒
      duration: 0,
      width: 0,
      height: 0
    });
    d(this, se, () => {
    });
    /**
     * 实时流的音轨
     */
    v(this, "audioTrack");
    d(this, Lt, null);
    d(this, Vt);
    h(this, Vt, t), this.audioTrack = t.getAudioTracks()[0] ?? null, s(this, At).duration = 1 / 0;
    const e = t.getVideoTracks()[0];
    e != null ? (e.contentHint = "motion", this.ready = new Promise((n) => {
      h(this, se, on(e, (a) => {
        s(this, At).width = a.width, s(this, At).height = a.height, h(this, Lt, a), n(this.meta);
      }));
    })) : this.ready = Promise.resolve(this.meta);
  }
  get meta() {
    return {
      ...s(this, At)
    };
  }
  async tick() {
    return {
      video: s(this, Lt) == null ? null : await createImageBitmap(s(this, Lt)),
      audio: [],
      state: "success"
    };
  }
  async split() {
    return [await this.clone(