vgaNAR6ta
13c91b464f
préparation du template intégration du fond animé fusion du style background et style pcp
1719 lines
64 KiB
JavaScript
1719 lines
64 KiB
JavaScript
"use strict";
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var Mp4Muxer = (() => {
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var __defProp = Object.defineProperty;
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var __getOwnPropDesc = Object.getOwnPropertyDescriptor;
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var __getOwnPropNames = Object.getOwnPropertyNames;
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var __hasOwnProp = Object.prototype.hasOwnProperty;
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var __export = (target, all) => {
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for (var name in all)
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__defProp(target, name, { get: all[name], enumerable: true });
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};
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var __copyProps = (to, from, except, desc) => {
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if (from && typeof from === "object" || typeof from === "function") {
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for (let key of __getOwnPropNames(from))
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if (!__hasOwnProp.call(to, key) && key !== except)
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__defProp(to, key, { get: () => from[key], enumerable: !(desc = __getOwnPropDesc(from, key)) || desc.enumerable });
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}
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return to;
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};
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var __toCommonJS = (mod) => __copyProps(__defProp({}, "__esModule", { value: true }), mod);
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var __accessCheck = (obj, member, msg) => {
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if (!member.has(obj))
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throw TypeError("Cannot " + msg);
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};
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var __privateGet = (obj, member, getter) => {
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__accessCheck(obj, member, "read from private field");
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return getter ? getter.call(obj) : member.get(obj);
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};
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var __privateAdd = (obj, member, value) => {
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if (member.has(obj))
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throw TypeError("Cannot add the same private member more than once");
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member instanceof WeakSet ? member.add(obj) : member.set(obj, value);
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};
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var __privateSet = (obj, member, value, setter) => {
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__accessCheck(obj, member, "write to private field");
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setter ? setter.call(obj, value) : member.set(obj, value);
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return value;
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};
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var __privateWrapper = (obj, member, setter, getter) => ({
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set _(value) {
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__privateSet(obj, member, value, setter);
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},
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get _() {
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return __privateGet(obj, member, getter);
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}
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});
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var __privateMethod = (obj, member, method) => {
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__accessCheck(obj, member, "access private method");
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return method;
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};
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// src/index.ts
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var src_exports = {};
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__export(src_exports, {
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ArrayBufferTarget: () => ArrayBufferTarget,
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FileSystemWritableFileStreamTarget: () => FileSystemWritableFileStreamTarget,
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Muxer: () => Muxer,
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StreamTarget: () => StreamTarget
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});
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// src/misc.ts
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var bytes = new Uint8Array(8);
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var view = new DataView(bytes.buffer);
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var u8 = (value) => {
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return [(value % 256 + 256) % 256];
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};
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var u16 = (value) => {
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view.setUint16(0, value, false);
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return [bytes[0], bytes[1]];
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};
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var i16 = (value) => {
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view.setInt16(0, value, false);
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return [bytes[0], bytes[1]];
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};
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var u24 = (value) => {
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view.setUint32(0, value, false);
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return [bytes[1], bytes[2], bytes[3]];
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};
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var u32 = (value) => {
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view.setUint32(0, value, false);
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return [bytes[0], bytes[1], bytes[2], bytes[3]];
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};
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var i32 = (value) => {
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view.setInt32(0, value, false);
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return [bytes[0], bytes[1], bytes[2], bytes[3]];
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};
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var u64 = (value) => {
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view.setUint32(0, Math.floor(value / 2 ** 32), false);
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view.setUint32(4, value, false);
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return [bytes[0], bytes[1], bytes[2], bytes[3], bytes[4], bytes[5], bytes[6], bytes[7]];
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};
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var fixed_8_8 = (value) => {
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view.setInt16(0, 2 ** 8 * value, false);
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return [bytes[0], bytes[1]];
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};
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var fixed_16_16 = (value) => {
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view.setInt32(0, 2 ** 16 * value, false);
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return [bytes[0], bytes[1], bytes[2], bytes[3]];
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};
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var fixed_2_30 = (value) => {
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view.setInt32(0, 2 ** 30 * value, false);
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return [bytes[0], bytes[1], bytes[2], bytes[3]];
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};
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var ascii = (text, nullTerminated = false) => {
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let bytes2 = Array(text.length).fill(null).map((_, i) => text.charCodeAt(i));
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if (nullTerminated)
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bytes2.push(0);
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return bytes2;
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};
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var last = (arr) => {
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return arr && arr[arr.length - 1];
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};
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var lastPresentedSample = (samples) => {
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let result = void 0;
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for (let sample of samples) {
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if (!result || sample.presentationTimestamp > result.presentationTimestamp) {
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result = sample;
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}
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}
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return result;
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};
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var intoTimescale = (timeInSeconds, timescale, round = true) => {
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let value = timeInSeconds * timescale;
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return round ? Math.round(value) : value;
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};
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var rotationMatrix = (rotationInDegrees) => {
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let theta = rotationInDegrees * (Math.PI / 180);
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let cosTheta = Math.cos(theta);
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let sinTheta = Math.sin(theta);
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return [
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cosTheta,
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sinTheta,
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0,
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-sinTheta,
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cosTheta,
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0,
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0,
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0,
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1
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];
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};
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var IDENTITY_MATRIX = rotationMatrix(0);
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var matrixToBytes = (matrix) => {
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return [
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fixed_16_16(matrix[0]),
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fixed_16_16(matrix[1]),
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fixed_2_30(matrix[2]),
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fixed_16_16(matrix[3]),
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fixed_16_16(matrix[4]),
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fixed_2_30(matrix[5]),
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fixed_16_16(matrix[6]),
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fixed_16_16(matrix[7]),
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fixed_2_30(matrix[8])
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];
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};
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var deepClone = (x) => {
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if (!x)
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return x;
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if (typeof x !== "object")
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return x;
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if (Array.isArray(x))
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return x.map(deepClone);
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return Object.fromEntries(Object.entries(x).map(([key, value]) => [key, deepClone(value)]));
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};
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var isU32 = (value) => {
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return value >= 0 && value < 2 ** 32;
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};
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// src/box.ts
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var box = (type, contents, children) => ({
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type,
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contents: contents && new Uint8Array(contents.flat(10)),
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children
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});
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var fullBox = (type, version, flags, contents, children) => box(
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type,
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[u8(version), u24(flags), contents ?? []],
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children
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);
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var ftyp = (details) => {
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let minorVersion = 512;
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if (details.fragmented)
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return box("ftyp", [
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ascii("iso5"),
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// Major brand
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u32(minorVersion),
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// Minor version
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// Compatible brands
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ascii("iso5"),
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ascii("iso6"),
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ascii("mp41")
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]);
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return box("ftyp", [
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ascii("isom"),
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// Major brand
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u32(minorVersion),
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// Minor version
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// Compatible brands
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ascii("isom"),
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details.holdsAvc ? ascii("avc1") : [],
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ascii("mp41")
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]);
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};
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var mdat = (reserveLargeSize) => ({ type: "mdat", largeSize: reserveLargeSize });
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var free = (size) => ({ type: "free", size });
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var moov = (tracks, creationTime, fragmented = false) => box("moov", null, [
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mvhd(creationTime, tracks),
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...tracks.map((x) => trak(x, creationTime)),
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fragmented ? mvex(tracks) : null
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]);
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var mvhd = (creationTime, tracks) => {
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let duration = intoTimescale(Math.max(
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0,
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...tracks.filter((x) => x.samples.length > 0).map((x) => {
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const lastSample = lastPresentedSample(x.samples);
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return lastSample.presentationTimestamp + lastSample.duration;
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})
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), GLOBAL_TIMESCALE);
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let nextTrackId = Math.max(...tracks.map((x) => x.id)) + 1;
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let needsU64 = !isU32(creationTime) || !isU32(duration);
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let u32OrU64 = needsU64 ? u64 : u32;
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return fullBox("mvhd", +needsU64, 0, [
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u32OrU64(creationTime),
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// Creation time
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u32OrU64(creationTime),
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// Modification time
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u32(GLOBAL_TIMESCALE),
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// Timescale
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u32OrU64(duration),
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// Duration
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fixed_16_16(1),
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// Preferred rate
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fixed_8_8(1),
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// Preferred volume
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Array(10).fill(0),
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// Reserved
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matrixToBytes(IDENTITY_MATRIX),
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// Matrix
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Array(24).fill(0),
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// Pre-defined
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u32(nextTrackId)
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// Next track ID
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]);
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};
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var trak = (track, creationTime) => box("trak", null, [
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tkhd(track, creationTime),
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mdia(track, creationTime)
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]);
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var tkhd = (track, creationTime) => {
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let lastSample = lastPresentedSample(track.samples);
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let durationInGlobalTimescale = intoTimescale(
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lastSample ? lastSample.presentationTimestamp + lastSample.duration : 0,
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GLOBAL_TIMESCALE
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);
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let needsU64 = !isU32(creationTime) || !isU32(durationInGlobalTimescale);
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let u32OrU64 = needsU64 ? u64 : u32;
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let matrix;
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if (track.info.type === "video") {
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matrix = typeof track.info.rotation === "number" ? rotationMatrix(track.info.rotation) : track.info.rotation;
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} else {
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matrix = IDENTITY_MATRIX;
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}
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return fullBox("tkhd", +needsU64, 3, [
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u32OrU64(creationTime),
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// Creation time
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u32OrU64(creationTime),
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// Modification time
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u32(track.id),
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// Track ID
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u32(0),
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// Reserved
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u32OrU64(durationInGlobalTimescale),
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// Duration
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Array(8).fill(0),
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// Reserved
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u16(0),
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// Layer
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u16(0),
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// Alternate group
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fixed_8_8(track.info.type === "audio" ? 1 : 0),
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// Volume
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u16(0),
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// Reserved
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matrixToBytes(matrix),
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// Matrix
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fixed_16_16(track.info.type === "video" ? track.info.width : 0),
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// Track width
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fixed_16_16(track.info.type === "video" ? track.info.height : 0)
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// Track height
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]);
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};
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var mdia = (track, creationTime) => box("mdia", null, [
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mdhd(track, creationTime),
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hdlr(track.info.type === "video" ? "vide" : "soun"),
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minf(track)
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]);
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var mdhd = (track, creationTime) => {
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let lastSample = lastPresentedSample(track.samples);
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let localDuration = intoTimescale(
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lastSample ? lastSample.presentationTimestamp + lastSample.duration : 0,
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track.timescale
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);
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let needsU64 = !isU32(creationTime) || !isU32(localDuration);
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let u32OrU64 = needsU64 ? u64 : u32;
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return fullBox("mdhd", +needsU64, 0, [
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u32OrU64(creationTime),
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// Creation time
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u32OrU64(creationTime),
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// Modification time
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u32(track.timescale),
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// Timescale
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u32OrU64(localDuration),
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// Duration
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u16(21956),
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// Language ("und", undetermined)
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u16(0)
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// Quality
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]);
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};
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var hdlr = (componentSubtype) => fullBox("hdlr", 0, 0, [
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ascii("mhlr"),
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// Component type
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ascii(componentSubtype),
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// Component subtype
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u32(0),
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// Component manufacturer
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u32(0),
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// Component flags
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u32(0),
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// Component flags mask
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ascii("mp4-muxer-hdlr", true)
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// Component name
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]);
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var minf = (track) => box("minf", null, [
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track.info.type === "video" ? vmhd() : smhd(),
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dinf(),
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stbl(track)
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]);
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var vmhd = () => fullBox("vmhd", 0, 1, [
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u16(0),
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// Graphics mode
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u16(0),
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// Opcolor R
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u16(0),
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// Opcolor G
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u16(0)
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// Opcolor B
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]);
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var smhd = () => fullBox("smhd", 0, 0, [
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u16(0),
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// Balance
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u16(0)
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// Reserved
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]);
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var dinf = () => box("dinf", null, [
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dref()
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]);
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var dref = () => fullBox("dref", 0, 0, [
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u32(1)
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// Entry count
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], [
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url()
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]);
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var url = () => fullBox("url ", 0, 1);
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var stbl = (track) => {
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const needsCtts = track.compositionTimeOffsetTable.length > 1 || track.compositionTimeOffsetTable.some((x) => x.sampleCompositionTimeOffset !== 0);
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return box("stbl", null, [
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stsd(track),
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stts(track),
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stss(track),
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stsc(track),
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stsz(track),
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stco(track),
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needsCtts ? ctts(track) : null
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]);
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};
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var stsd = (track) => fullBox("stsd", 0, 0, [
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u32(1)
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// Entry count
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], [
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track.info.type === "video" ? videoSampleDescription(
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VIDEO_CODEC_TO_BOX_NAME[track.info.codec],
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track
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) : soundSampleDescription(
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AUDIO_CODEC_TO_BOX_NAME[track.info.codec],
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track
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)
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]);
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var videoSampleDescription = (compressionType, track) => box(compressionType, [
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Array(6).fill(0),
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// Reserved
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u16(1),
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// Data reference index
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u16(0),
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|
// Pre-defined
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u16(0),
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// Reserved
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Array(12).fill(0),
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// Pre-defined
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u16(track.info.width),
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// Width
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u16(track.info.height),
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// Height
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u32(4718592),
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// Horizontal resolution
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u32(4718592),
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// Vertical resolution
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u32(0),
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// Reserved
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u16(1),
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// Frame count
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Array(32).fill(0),
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// Compressor name
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u16(24),
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// Depth
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i16(65535)
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// Pre-defined
|
|
], [
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VIDEO_CODEC_TO_CONFIGURATION_BOX[track.info.codec](track)
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]);
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var avcC = (track) => track.info.decoderConfig && box("avcC", [
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// For AVC, description is an AVCDecoderConfigurationRecord, so nothing else to do here
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...new Uint8Array(track.info.decoderConfig.description)
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]);
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var hvcC = (track) => track.info.decoderConfig && box("hvcC", [
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// For HEVC, description is a HEVCDecoderConfigurationRecord, so nothing else to do here
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...new Uint8Array(track.info.decoderConfig.description)
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]);
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var vpcC = (track) => {
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if (!track.info.decoderConfig) {
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return null;
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}
|
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let decoderConfig = track.info.decoderConfig;
|
|
if (!decoderConfig.colorSpace) {
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throw new Error(`'colorSpace' is required in the decoder config for VP9.`);
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}
|
|
let parts = decoderConfig.codec.split(".");
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let profile = Number(parts[1]);
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|
let level = Number(parts[2]);
|
|
let bitDepth = Number(parts[3]);
|
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let chromaSubsampling = 0;
|
|
let thirdByte = (bitDepth << 4) + (chromaSubsampling << 1) + Number(decoderConfig.colorSpace.fullRange);
|
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let colourPrimaries = 2;
|
|
let transferCharacteristics = 2;
|
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let matrixCoefficients = 2;
|
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return fullBox("vpcC", 1, 0, [
|
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u8(profile),
|
|
// Profile
|
|
u8(level),
|
|
// Level
|
|
u8(thirdByte),
|
|
// Bit depth, chroma subsampling, full range
|
|
u8(colourPrimaries),
|
|
// Colour primaries
|
|
u8(transferCharacteristics),
|
|
// Transfer characteristics
|
|
u8(matrixCoefficients),
|
|
// Matrix coefficients
|
|
u16(0)
|
|
// Codec initialization data size
|
|
]);
|
|
};
|
|
var av1C = () => {
|
|
let marker = 1;
|
|
let version = 1;
|
|
let firstByte = (marker << 7) + version;
|
|
return box("av1C", [
|
|
firstByte,
|
|
0,
|
|
0,
|
|
0
|
|
]);
|
|
};
|
|
var soundSampleDescription = (compressionType, track) => box(compressionType, [
|
|
Array(6).fill(0),
|
|
// Reserved
|
|
u16(1),
|
|
// Data reference index
|
|
u16(0),
|
|
// Version
|
|
u16(0),
|
|
// Revision level
|
|
u32(0),
|
|
// Vendor
|
|
u16(track.info.numberOfChannels),
|
|
// Number of channels
|
|
u16(16),
|
|
// Sample size (bits)
|
|
u16(0),
|
|
// Compression ID
|
|
u16(0),
|
|
// Packet size
|
|
fixed_16_16(track.info.sampleRate)
|
|
// Sample rate
|
|
], [
|
|
AUDIO_CODEC_TO_CONFIGURATION_BOX[track.info.codec](track)
|
|
]);
|
|
var esds = (track) => {
|
|
let description = new Uint8Array(track.info.decoderConfig.description);
|
|
return fullBox("esds", 0, 0, [
|
|
// https://stackoverflow.com/a/54803118
|
|
u32(58753152),
|
|
// TAG(3) = Object Descriptor ([2])
|
|
u8(32 + description.byteLength),
|
|
// length of this OD (which includes the next 2 tags)
|
|
u16(1),
|
|
// ES_ID = 1
|
|
u8(0),
|
|
// flags etc = 0
|
|
u32(75530368),
|
|
// TAG(4) = ES Descriptor ([2]) embedded in above OD
|
|
u8(18 + description.byteLength),
|
|
// length of this ESD
|
|
u8(64),
|
|
// MPEG-4 Audio
|
|
u8(21),
|
|
// stream type(6bits)=5 audio, flags(2bits)=1
|
|
u24(0),
|
|
// 24bit buffer size
|
|
u32(130071),
|
|
// max bitrate
|
|
u32(130071),
|
|
// avg bitrate
|
|
u32(92307584),
|
|
// TAG(5) = ASC ([2],[3]) embedded in above OD
|
|
u8(description.byteLength),
|
|
// length
|
|
...description,
|
|
u32(109084800),
|
|
// TAG(6)
|
|
u8(1),
|
|
// length
|
|
u8(2)
|
|
// data
|
|
]);
|
|
};
|
|
var dOps = (track) => box("dOps", [
|
|
u8(0),
|
|
// Version
|
|
u8(track.info.numberOfChannels),
|
|
// OutputChannelCount
|
|
u16(3840),
|
|
// PreSkip, should be at least 80 milliseconds worth of playback, measured in 48000 Hz samples
|
|
u32(track.info.sampleRate),
|
|
// InputSampleRate
|
|
fixed_8_8(0),
|
|
// OutputGain
|
|
u8(0)
|
|
// ChannelMappingFamily
|
|
]);
|
|
var stts = (track) => {
|
|
return fullBox("stts", 0, 0, [
|
|
u32(track.timeToSampleTable.length),
|
|
// Number of entries
|
|
track.timeToSampleTable.map((x) => [
|
|
// Time-to-sample table
|
|
u32(x.sampleCount),
|
|
// Sample count
|
|
u32(x.sampleDelta)
|
|
// Sample duration
|
|
])
|
|
]);
|
|
};
|
|
var stss = (track) => {
|
|
if (track.samples.every((x) => x.type === "key"))
|
|
return null;
|
|
let keySamples = [...track.samples.entries()].filter(([, sample]) => sample.type === "key");
|
|
return fullBox("stss", 0, 0, [
|
|
u32(keySamples.length),
|
|
// Number of entries
|
|
keySamples.map(([index]) => u32(index + 1))
|
|
// Sync sample table
|
|
]);
|
|
};
|
|
var stsc = (track) => {
|
|
return fullBox("stsc", 0, 0, [
|
|
u32(track.compactlyCodedChunkTable.length),
|
|
// Number of entries
|
|
track.compactlyCodedChunkTable.map((x) => [
|
|
// Sample-to-chunk table
|
|
u32(x.firstChunk),
|
|
// First chunk
|
|
u32(x.samplesPerChunk),
|
|
// Samples per chunk
|
|
u32(1)
|
|
// Sample description index
|
|
])
|
|
]);
|
|
};
|
|
var stsz = (track) => fullBox("stsz", 0, 0, [
|
|
u32(0),
|
|
// Sample size (0 means non-constant size)
|
|
u32(track.samples.length),
|
|
// Number of entries
|
|
track.samples.map((x) => u32(x.size))
|
|
// Sample size table
|
|
]);
|
|
var stco = (track) => {
|
|
if (track.finalizedChunks.length > 0 && last(track.finalizedChunks).offset >= 2 ** 32) {
|
|
return fullBox("co64", 0, 0, [
|
|
u32(track.finalizedChunks.length),
|
|
// Number of entries
|
|
track.finalizedChunks.map((x) => u64(x.offset))
|
|
// Chunk offset table
|
|
]);
|
|
}
|
|
return fullBox("stco", 0, 0, [
|
|
u32(track.finalizedChunks.length),
|
|
// Number of entries
|
|
track.finalizedChunks.map((x) => u32(x.offset))
|
|
// Chunk offset table
|
|
]);
|
|
};
|
|
var ctts = (track) => {
|
|
return fullBox("ctts", 0, 0, [
|
|
u32(track.compositionTimeOffsetTable.length),
|
|
// Number of entries
|
|
track.compositionTimeOffsetTable.map((x) => [
|
|
// Time-to-sample table
|
|
u32(x.sampleCount),
|
|
// Sample count
|
|
u32(x.sampleCompositionTimeOffset)
|
|
// Sample offset
|
|
])
|
|
]);
|
|
};
|
|
var mvex = (tracks) => {
|
|
return box("mvex", null, tracks.map(trex));
|
|
};
|
|
var trex = (track) => {
|
|
return fullBox("trex", 0, 0, [
|
|
u32(track.id),
|
|
// Track ID
|
|
u32(1),
|
|
// Default sample description index
|
|
u32(0),
|
|
// Default sample duration
|
|
u32(0),
|
|
// Default sample size
|
|
u32(0)
|
|
// Default sample flags
|
|
]);
|
|
};
|
|
var moof = (sequenceNumber, tracks) => {
|
|
return box("moof", null, [
|
|
mfhd(sequenceNumber),
|
|
...tracks.map(traf)
|
|
]);
|
|
};
|
|
var mfhd = (sequenceNumber) => {
|
|
return fullBox("mfhd", 0, 0, [
|
|
u32(sequenceNumber)
|
|
// Sequence number
|
|
]);
|
|
};
|
|
var fragmentSampleFlags = (sample) => {
|
|
let byte1 = 0;
|
|
let byte2 = 0;
|
|
let byte3 = 0;
|
|
let byte4 = 0;
|
|
let sampleIsDifferenceSample = sample.type === "delta";
|
|
byte2 |= +sampleIsDifferenceSample;
|
|
if (sampleIsDifferenceSample) {
|
|
byte1 |= 1;
|
|
} else {
|
|
byte1 |= 2;
|
|
}
|
|
return byte1 << 24 | byte2 << 16 | byte3 << 8 | byte4;
|
|
};
|
|
var traf = (track) => {
|
|
return box("traf", null, [
|
|
tfhd(track),
|
|
tfdt(track),
|
|
trun(track)
|
|
]);
|
|
};
|
|
var tfhd = (track) => {
|
|
let tfFlags = 0;
|
|
tfFlags |= 8;
|
|
tfFlags |= 16;
|
|
tfFlags |= 32;
|
|
tfFlags |= 131072;
|
|
let referenceSample = track.currentChunk.samples[1] ?? track.currentChunk.samples[0];
|
|
let referenceSampleInfo = {
|
|
duration: referenceSample.timescaleUnitsToNextSample,
|
|
size: referenceSample.size,
|
|
flags: fragmentSampleFlags(referenceSample)
|
|
};
|
|
return fullBox("tfhd", 0, tfFlags, [
|
|
u32(track.id),
|
|
// Track ID
|
|
u32(referenceSampleInfo.duration),
|
|
// Default sample duration
|
|
u32(referenceSampleInfo.size),
|
|
// Default sample size
|
|
u32(referenceSampleInfo.flags)
|
|
// Default sample flags
|
|
]);
|
|
};
|
|
var tfdt = (track) => {
|
|
return fullBox("tfdt", 1, 0, [
|
|
u64(intoTimescale(track.currentChunk.startTimestamp, track.timescale))
|
|
// Base Media Decode Time
|
|
]);
|
|
};
|
|
var trun = (track) => {
|
|
let allSampleDurations = track.currentChunk.samples.map((x) => x.timescaleUnitsToNextSample);
|
|
let allSampleSizes = track.currentChunk.samples.map((x) => x.size);
|
|
let allSampleFlags = track.currentChunk.samples.map(fragmentSampleFlags);
|
|
let allSampleCompositionTimeOffsets = track.currentChunk.samples.map((x) => intoTimescale(x.presentationTimestamp - x.decodeTimestamp, track.timescale));
|
|
let uniqueSampleDurations = new Set(allSampleDurations);
|
|
let uniqueSampleSizes = new Set(allSampleSizes);
|
|
let uniqueSampleFlags = new Set(allSampleFlags);
|
|
let uniqueSampleCompositionTimeOffsets = new Set(allSampleCompositionTimeOffsets);
|
|
let firstSampleFlagsPresent = uniqueSampleFlags.size === 2 && allSampleFlags[0] !== allSampleFlags[1];
|
|
let sampleDurationPresent = uniqueSampleDurations.size > 1;
|
|
let sampleSizePresent = uniqueSampleSizes.size > 1;
|
|
let sampleFlagsPresent = !firstSampleFlagsPresent && uniqueSampleFlags.size > 1;
|
|
let sampleCompositionTimeOffsetsPresent = uniqueSampleCompositionTimeOffsets.size > 1 || [...uniqueSampleCompositionTimeOffsets].some((x) => x !== 0);
|
|
let flags = 0;
|
|
flags |= 1;
|
|
flags |= 4 * +firstSampleFlagsPresent;
|
|
flags |= 256 * +sampleDurationPresent;
|
|
flags |= 512 * +sampleSizePresent;
|
|
flags |= 1024 * +sampleFlagsPresent;
|
|
flags |= 2048 * +sampleCompositionTimeOffsetsPresent;
|
|
return fullBox("trun", 1, flags, [
|
|
u32(track.currentChunk.samples.length),
|
|
// Sample count
|
|
u32(track.currentChunk.offset - track.currentChunk.moofOffset || 0),
|
|
// Data offset
|
|
firstSampleFlagsPresent ? u32(allSampleFlags[0]) : [],
|
|
track.currentChunk.samples.map((_, i) => [
|
|
sampleDurationPresent ? u32(allSampleDurations[i]) : [],
|
|
// Sample duration
|
|
sampleSizePresent ? u32(allSampleSizes[i]) : [],
|
|
// Sample size
|
|
sampleFlagsPresent ? u32(allSampleFlags[i]) : [],
|
|
// Sample flags
|
|
// Sample composition time offsets
|
|
sampleCompositionTimeOffsetsPresent ? i32(allSampleCompositionTimeOffsets[i]) : []
|
|
])
|
|
]);
|
|
};
|
|
var mfra = (tracks) => {
|
|
return box("mfra", null, [
|
|
...tracks.map(tfra),
|
|
mfro()
|
|
]);
|
|
};
|
|
var tfra = (track, trackIndex) => {
|
|
let version = 1;
|
|
return fullBox("tfra", version, 0, [
|
|
u32(track.id),
|
|
// Track ID
|
|
u32(63),
|
|
// This specifies that traf number, trun number and sample number are 32-bit ints
|
|
u32(track.finalizedChunks.length),
|
|
// Number of entries
|
|
track.finalizedChunks.map((chunk) => [
|
|
u64(intoTimescale(chunk.startTimestamp, track.timescale)),
|
|
// Time
|
|
u64(chunk.moofOffset),
|
|
// moof offset
|
|
u32(trackIndex + 1),
|
|
// traf number
|
|
u32(1),
|
|
// trun number
|
|
u32(1)
|
|
// Sample number
|
|
])
|
|
]);
|
|
};
|
|
var mfro = () => {
|
|
return fullBox("mfro", 0, 0, [
|
|
// This value needs to be overwritten manually from the outside, where the actual size of the enclosing mfra box
|
|
// is known
|
|
u32(0)
|
|
// Size
|
|
]);
|
|
};
|
|
var VIDEO_CODEC_TO_BOX_NAME = {
|
|
"avc": "avc1",
|
|
"hevc": "hvc1",
|
|
"vp9": "vp09",
|
|
"av1": "av01"
|
|
};
|
|
var VIDEO_CODEC_TO_CONFIGURATION_BOX = {
|
|
"avc": avcC,
|
|
"hevc": hvcC,
|
|
"vp9": vpcC,
|
|
"av1": av1C
|
|
};
|
|
var AUDIO_CODEC_TO_BOX_NAME = {
|
|
"aac": "mp4a",
|
|
"opus": "Opus"
|
|
};
|
|
var AUDIO_CODEC_TO_CONFIGURATION_BOX = {
|
|
"aac": esds,
|
|
"opus": dOps
|
|
};
|
|
|
|
// src/target.ts
|
|
var ArrayBufferTarget = class {
|
|
constructor() {
|
|
this.buffer = null;
|
|
}
|
|
};
|
|
var StreamTarget = class {
|
|
constructor(options) {
|
|
this.options = options;
|
|
}
|
|
};
|
|
var FileSystemWritableFileStreamTarget = class {
|
|
constructor(stream, options) {
|
|
this.stream = stream;
|
|
this.options = options;
|
|
}
|
|
};
|
|
|
|
// src/writer.ts
|
|
var _helper, _helperView;
|
|
var Writer = class {
|
|
constructor() {
|
|
this.pos = 0;
|
|
__privateAdd(this, _helper, new Uint8Array(8));
|
|
__privateAdd(this, _helperView, new DataView(__privateGet(this, _helper).buffer));
|
|
/**
|
|
* Stores the position from the start of the file to where boxes elements have been written. This is used to
|
|
* rewrite/edit elements that were already added before, and to measure sizes of things.
|
|
*/
|
|
this.offsets = /* @__PURE__ */ new WeakMap();
|
|
}
|
|
/** Sets the current position for future writes to a new one. */
|
|
seek(newPos) {
|
|
this.pos = newPos;
|
|
}
|
|
writeU32(value) {
|
|
__privateGet(this, _helperView).setUint32(0, value, false);
|
|
this.write(__privateGet(this, _helper).subarray(0, 4));
|
|
}
|
|
writeU64(value) {
|
|
__privateGet(this, _helperView).setUint32(0, Math.floor(value / 2 ** 32), false);
|
|
__privateGet(this, _helperView).setUint32(4, value, false);
|
|
this.write(__privateGet(this, _helper).subarray(0, 8));
|
|
}
|
|
writeAscii(text) {
|
|
for (let i = 0; i < text.length; i++) {
|
|
__privateGet(this, _helperView).setUint8(i % 8, text.charCodeAt(i));
|
|
if (i % 8 === 7)
|
|
this.write(__privateGet(this, _helper));
|
|
}
|
|
if (text.length % 8 !== 0) {
|
|
this.write(__privateGet(this, _helper).subarray(0, text.length % 8));
|
|
}
|
|
}
|
|
writeBox(box2) {
|
|
this.offsets.set(box2, this.pos);
|
|
if (box2.contents && !box2.children) {
|
|
this.writeBoxHeader(box2, box2.size ?? box2.contents.byteLength + 8);
|
|
this.write(box2.contents);
|
|
} else {
|
|
let startPos = this.pos;
|
|
this.writeBoxHeader(box2, 0);
|
|
if (box2.contents)
|
|
this.write(box2.contents);
|
|
if (box2.children) {
|
|
for (let child of box2.children)
|
|
if (child)
|
|
this.writeBox(child);
|
|
}
|
|
let endPos = this.pos;
|
|
let size = box2.size ?? endPos - startPos;
|
|
this.seek(startPos);
|
|
this.writeBoxHeader(box2, size);
|
|
this.seek(endPos);
|
|
}
|
|
}
|
|
writeBoxHeader(box2, size) {
|
|
this.writeU32(box2.largeSize ? 1 : size);
|
|
this.writeAscii(box2.type);
|
|
if (box2.largeSize)
|
|
this.writeU64(size);
|
|
}
|
|
measureBoxHeader(box2) {
|
|
return 8 + (box2.largeSize ? 8 : 0);
|
|
}
|
|
patchBox(box2) {
|
|
let endPos = this.pos;
|
|
this.seek(this.offsets.get(box2));
|
|
this.writeBox(box2);
|
|
this.seek(endPos);
|
|
}
|
|
measureBox(box2) {
|
|
if (box2.contents && !box2.children) {
|
|
let headerSize = this.measureBoxHeader(box2);
|
|
return headerSize + box2.contents.byteLength;
|
|
} else {
|
|
let result = this.measureBoxHeader(box2);
|
|
if (box2.contents)
|
|
result += box2.contents.byteLength;
|
|
if (box2.children) {
|
|
for (let child of box2.children)
|
|
if (child)
|
|
result += this.measureBox(child);
|
|
}
|
|
return result;
|
|
}
|
|
}
|
|
};
|
|
_helper = new WeakMap();
|
|
_helperView = new WeakMap();
|
|
var _target, _buffer, _bytes, _maxPos, _ensureSize, ensureSize_fn;
|
|
var ArrayBufferTargetWriter = class extends Writer {
|
|
constructor(target) {
|
|
super();
|
|
__privateAdd(this, _ensureSize);
|
|
__privateAdd(this, _target, void 0);
|
|
__privateAdd(this, _buffer, new ArrayBuffer(2 ** 16));
|
|
__privateAdd(this, _bytes, new Uint8Array(__privateGet(this, _buffer)));
|
|
__privateAdd(this, _maxPos, 0);
|
|
__privateSet(this, _target, target);
|
|
}
|
|
write(data) {
|
|
__privateMethod(this, _ensureSize, ensureSize_fn).call(this, this.pos + data.byteLength);
|
|
__privateGet(this, _bytes).set(data, this.pos);
|
|
this.pos += data.byteLength;
|
|
__privateSet(this, _maxPos, Math.max(__privateGet(this, _maxPos), this.pos));
|
|
}
|
|
finalize() {
|
|
__privateMethod(this, _ensureSize, ensureSize_fn).call(this, this.pos);
|
|
__privateGet(this, _target).buffer = __privateGet(this, _buffer).slice(0, Math.max(__privateGet(this, _maxPos), this.pos));
|
|
}
|
|
};
|
|
_target = new WeakMap();
|
|
_buffer = new WeakMap();
|
|
_bytes = new WeakMap();
|
|
_maxPos = new WeakMap();
|
|
_ensureSize = new WeakSet();
|
|
ensureSize_fn = function(size) {
|
|
let newLength = __privateGet(this, _buffer).byteLength;
|
|
while (newLength < size)
|
|
newLength *= 2;
|
|
if (newLength === __privateGet(this, _buffer).byteLength)
|
|
return;
|
|
let newBuffer = new ArrayBuffer(newLength);
|
|
let newBytes = new Uint8Array(newBuffer);
|
|
newBytes.set(__privateGet(this, _bytes), 0);
|
|
__privateSet(this, _buffer, newBuffer);
|
|
__privateSet(this, _bytes, newBytes);
|
|
};
|
|
var _target2, _sections;
|
|
var StreamTargetWriter = class extends Writer {
|
|
constructor(target) {
|
|
super();
|
|
__privateAdd(this, _target2, void 0);
|
|
__privateAdd(this, _sections, []);
|
|
__privateSet(this, _target2, target);
|
|
}
|
|
write(data) {
|
|
__privateGet(this, _sections).push({
|
|
data: data.slice(),
|
|
start: this.pos
|
|
});
|
|
this.pos += data.byteLength;
|
|
}
|
|
flush() {
|
|
if (__privateGet(this, _sections).length === 0)
|
|
return;
|
|
let chunks = [];
|
|
let sorted = [...__privateGet(this, _sections)].sort((a, b) => a.start - b.start);
|
|
chunks.push({
|
|
start: sorted[0].start,
|
|
size: sorted[0].data.byteLength
|
|
});
|
|
for (let i = 1; i < sorted.length; i++) {
|
|
let lastChunk = chunks[chunks.length - 1];
|
|
let section = sorted[i];
|
|
if (section.start <= lastChunk.start + lastChunk.size) {
|
|
lastChunk.size = Math.max(lastChunk.size, section.start + section.data.byteLength - lastChunk.start);
|
|
} else {
|
|
chunks.push({
|
|
start: section.start,
|
|
size: section.data.byteLength
|
|
});
|
|
}
|
|
}
|
|
for (let chunk of chunks) {
|
|
chunk.data = new Uint8Array(chunk.size);
|
|
for (let section of __privateGet(this, _sections)) {
|
|
if (chunk.start <= section.start && section.start < chunk.start + chunk.size) {
|
|
chunk.data.set(section.data, section.start - chunk.start);
|
|
}
|
|
}
|
|
__privateGet(this, _target2).options.onData?.(chunk.data, chunk.start);
|
|
}
|
|
__privateGet(this, _sections).length = 0;
|
|
}
|
|
finalize() {
|
|
}
|
|
};
|
|
_target2 = new WeakMap();
|
|
_sections = new WeakMap();
|
|
var DEFAULT_CHUNK_SIZE = 2 ** 24;
|
|
var MAX_CHUNKS_AT_ONCE = 2;
|
|
var _target3, _chunkSize, _chunks, _writeDataIntoChunks, writeDataIntoChunks_fn, _insertSectionIntoChunk, insertSectionIntoChunk_fn, _createChunk, createChunk_fn, _flushChunks, flushChunks_fn;
|
|
var ChunkedStreamTargetWriter = class extends Writer {
|
|
constructor(target) {
|
|
super();
|
|
__privateAdd(this, _writeDataIntoChunks);
|
|
__privateAdd(this, _insertSectionIntoChunk);
|
|
__privateAdd(this, _createChunk);
|
|
__privateAdd(this, _flushChunks);
|
|
__privateAdd(this, _target3, void 0);
|
|
__privateAdd(this, _chunkSize, void 0);
|
|
/**
|
|
* The data is divided up into fixed-size chunks, whose contents are first filled in RAM and then flushed out.
|
|
* A chunk is flushed if all of its contents have been written.
|
|
*/
|
|
__privateAdd(this, _chunks, []);
|
|
__privateSet(this, _target3, target);
|
|
__privateSet(this, _chunkSize, target.options?.chunkSize ?? DEFAULT_CHUNK_SIZE);
|
|
if (!Number.isInteger(__privateGet(this, _chunkSize)) || __privateGet(this, _chunkSize) < 2 ** 10) {
|
|
throw new Error("Invalid StreamTarget options: chunkSize must be an integer not smaller than 1024.");
|
|
}
|
|
}
|
|
write(data) {
|
|
__privateMethod(this, _writeDataIntoChunks, writeDataIntoChunks_fn).call(this, data, this.pos);
|
|
__privateMethod(this, _flushChunks, flushChunks_fn).call(this);
|
|
this.pos += data.byteLength;
|
|
}
|
|
finalize() {
|
|
__privateMethod(this, _flushChunks, flushChunks_fn).call(this, true);
|
|
}
|
|
};
|
|
_target3 = new WeakMap();
|
|
_chunkSize = new WeakMap();
|
|
_chunks = new WeakMap();
|
|
_writeDataIntoChunks = new WeakSet();
|
|
writeDataIntoChunks_fn = function(data, position) {
|
|
let chunkIndex = __privateGet(this, _chunks).findIndex((x) => x.start <= position && position < x.start + __privateGet(this, _chunkSize));
|
|
if (chunkIndex === -1)
|
|
chunkIndex = __privateMethod(this, _createChunk, createChunk_fn).call(this, position);
|
|
let chunk = __privateGet(this, _chunks)[chunkIndex];
|
|
let relativePosition = position - chunk.start;
|
|
let toWrite = data.subarray(0, Math.min(__privateGet(this, _chunkSize) - relativePosition, data.byteLength));
|
|
chunk.data.set(toWrite, relativePosition);
|
|
let section = {
|
|
start: relativePosition,
|
|
end: relativePosition + toWrite.byteLength
|
|
};
|
|
__privateMethod(this, _insertSectionIntoChunk, insertSectionIntoChunk_fn).call(this, chunk, section);
|
|
if (chunk.written[0].start === 0 && chunk.written[0].end === __privateGet(this, _chunkSize)) {
|
|
chunk.shouldFlush = true;
|
|
}
|
|
if (__privateGet(this, _chunks).length > MAX_CHUNKS_AT_ONCE) {
|
|
for (let i = 0; i < __privateGet(this, _chunks).length - 1; i++) {
|
|
__privateGet(this, _chunks)[i].shouldFlush = true;
|
|
}
|
|
__privateMethod(this, _flushChunks, flushChunks_fn).call(this);
|
|
}
|
|
if (toWrite.byteLength < data.byteLength) {
|
|
__privateMethod(this, _writeDataIntoChunks, writeDataIntoChunks_fn).call(this, data.subarray(toWrite.byteLength), position + toWrite.byteLength);
|
|
}
|
|
};
|
|
_insertSectionIntoChunk = new WeakSet();
|
|
insertSectionIntoChunk_fn = function(chunk, section) {
|
|
let low = 0;
|
|
let high = chunk.written.length - 1;
|
|
let index = -1;
|
|
while (low <= high) {
|
|
let mid = Math.floor(low + (high - low + 1) / 2);
|
|
if (chunk.written[mid].start <= section.start) {
|
|
low = mid + 1;
|
|
index = mid;
|
|
} else {
|
|
high = mid - 1;
|
|
}
|
|
}
|
|
chunk.written.splice(index + 1, 0, section);
|
|
if (index === -1 || chunk.written[index].end < section.start)
|
|
index++;
|
|
while (index < chunk.written.length - 1 && chunk.written[index].end >= chunk.written[index + 1].start) {
|
|
chunk.written[index].end = Math.max(chunk.written[index].end, chunk.written[index + 1].end);
|
|
chunk.written.splice(index + 1, 1);
|
|
}
|
|
};
|
|
_createChunk = new WeakSet();
|
|
createChunk_fn = function(includesPosition) {
|
|
let start = Math.floor(includesPosition / __privateGet(this, _chunkSize)) * __privateGet(this, _chunkSize);
|
|
let chunk = {
|
|
start,
|
|
data: new Uint8Array(__privateGet(this, _chunkSize)),
|
|
written: [],
|
|
shouldFlush: false
|
|
};
|
|
__privateGet(this, _chunks).push(chunk);
|
|
__privateGet(this, _chunks).sort((a, b) => a.start - b.start);
|
|
return __privateGet(this, _chunks).indexOf(chunk);
|
|
};
|
|
_flushChunks = new WeakSet();
|
|
flushChunks_fn = function(force = false) {
|
|
for (let i = 0; i < __privateGet(this, _chunks).length; i++) {
|
|
let chunk = __privateGet(this, _chunks)[i];
|
|
if (!chunk.shouldFlush && !force)
|
|
continue;
|
|
for (let section of chunk.written) {
|
|
__privateGet(this, _target3).options.onData?.(
|
|
chunk.data.subarray(section.start, section.end),
|
|
chunk.start + section.start
|
|
);
|
|
}
|
|
__privateGet(this, _chunks).splice(i--, 1);
|
|
}
|
|
};
|
|
var FileSystemWritableFileStreamTargetWriter = class extends ChunkedStreamTargetWriter {
|
|
constructor(target) {
|
|
super(new StreamTarget({
|
|
onData: (data, position) => target.stream.write({
|
|
type: "write",
|
|
data,
|
|
position
|
|
}),
|
|
chunkSize: target.options?.chunkSize
|
|
}));
|
|
}
|
|
};
|
|
|
|
// src/muxer.ts
|
|
var GLOBAL_TIMESCALE = 1e3;
|
|
var SUPPORTED_VIDEO_CODECS2 = ["avc", "hevc", "vp9", "av1"];
|
|
var SUPPORTED_AUDIO_CODECS2 = ["aac", "opus"];
|
|
var TIMESTAMP_OFFSET = 2082844800;
|
|
var FIRST_TIMESTAMP_BEHAVIORS = ["strict", "offset", "cross-track-offset"];
|
|
var _options, _writer, _ftypSize, _mdat, _videoTrack, _audioTrack, _creationTime, _finalizedChunks, _nextFragmentNumber, _videoSampleQueue, _audioSampleQueue, _finalized, _validateOptions, validateOptions_fn, _writeHeader, writeHeader_fn, _computeMoovSizeUpperBound, computeMoovSizeUpperBound_fn, _prepareTracks, prepareTracks_fn, _generateMpeg4AudioSpecificConfig, generateMpeg4AudioSpecificConfig_fn, _createSampleForTrack, createSampleForTrack_fn, _addSampleToTrack, addSampleToTrack_fn, _validateTimestamp, validateTimestamp_fn, _finalizeCurrentChunk, finalizeCurrentChunk_fn, _finalizeFragment, finalizeFragment_fn, _maybeFlushStreamingTargetWriter, maybeFlushStreamingTargetWriter_fn, _ensureNotFinalized, ensureNotFinalized_fn;
|
|
var Muxer = class {
|
|
constructor(options) {
|
|
__privateAdd(this, _validateOptions);
|
|
__privateAdd(this, _writeHeader);
|
|
__privateAdd(this, _computeMoovSizeUpperBound);
|
|
__privateAdd(this, _prepareTracks);
|
|
// https://wiki.multimedia.cx/index.php/MPEG-4_Audio
|
|
__privateAdd(this, _generateMpeg4AudioSpecificConfig);
|
|
__privateAdd(this, _createSampleForTrack);
|
|
__privateAdd(this, _addSampleToTrack);
|
|
__privateAdd(this, _validateTimestamp);
|
|
__privateAdd(this, _finalizeCurrentChunk);
|
|
__privateAdd(this, _finalizeFragment);
|
|
__privateAdd(this, _maybeFlushStreamingTargetWriter);
|
|
__privateAdd(this, _ensureNotFinalized);
|
|
__privateAdd(this, _options, void 0);
|
|
__privateAdd(this, _writer, void 0);
|
|
__privateAdd(this, _ftypSize, void 0);
|
|
__privateAdd(this, _mdat, void 0);
|
|
__privateAdd(this, _videoTrack, null);
|
|
__privateAdd(this, _audioTrack, null);
|
|
__privateAdd(this, _creationTime, Math.floor(Date.now() / 1e3) + TIMESTAMP_OFFSET);
|
|
__privateAdd(this, _finalizedChunks, []);
|
|
// Fields for fragmented MP4:
|
|
__privateAdd(this, _nextFragmentNumber, 1);
|
|
__privateAdd(this, _videoSampleQueue, []);
|
|
__privateAdd(this, _audioSampleQueue, []);
|
|
__privateAdd(this, _finalized, false);
|
|
__privateMethod(this, _validateOptions, validateOptions_fn).call(this, options);
|
|
options.video = deepClone(options.video);
|
|
options.audio = deepClone(options.audio);
|
|
options.fastStart = deepClone(options.fastStart);
|
|
this.target = options.target;
|
|
__privateSet(this, _options, {
|
|
firstTimestampBehavior: "strict",
|
|
...options
|
|
});
|
|
if (options.target instanceof ArrayBufferTarget) {
|
|
__privateSet(this, _writer, new ArrayBufferTargetWriter(options.target));
|
|
} else if (options.target instanceof StreamTarget) {
|
|
__privateSet(this, _writer, options.target.options?.chunked ? new ChunkedStreamTargetWriter(options.target) : new StreamTargetWriter(options.target));
|
|
} else if (options.target instanceof FileSystemWritableFileStreamTarget) {
|
|
__privateSet(this, _writer, new FileSystemWritableFileStreamTargetWriter(options.target));
|
|
} else {
|
|
throw new Error(`Invalid target: ${options.target}`);
|
|
}
|
|
__privateMethod(this, _prepareTracks, prepareTracks_fn).call(this);
|
|
__privateMethod(this, _writeHeader, writeHeader_fn).call(this);
|
|
}
|
|
addVideoChunk(sample, meta, timestamp, compositionTimeOffset) {
|
|
let data = new Uint8Array(sample.byteLength);
|
|
sample.copyTo(data);
|
|
this.addVideoChunkRaw(
|
|
data,
|
|
sample.type,
|
|
timestamp ?? sample.timestamp,
|
|
sample.duration,
|
|
meta,
|
|
compositionTimeOffset
|
|
);
|
|
}
|
|
addVideoChunkRaw(data, type, timestamp, duration, meta, compositionTimeOffset) {
|
|
__privateMethod(this, _ensureNotFinalized, ensureNotFinalized_fn).call(this);
|
|
if (!__privateGet(this, _options).video)
|
|
throw new Error("No video track declared.");
|
|
if (typeof __privateGet(this, _options).fastStart === "object" && __privateGet(this, _videoTrack).samples.length === __privateGet(this, _options).fastStart.expectedVideoChunks) {
|
|
throw new Error(`Cannot add more video chunks than specified in 'fastStart' (${__privateGet(this, _options).fastStart.expectedVideoChunks}).`);
|
|
}
|
|
let videoSample = __privateMethod(this, _createSampleForTrack, createSampleForTrack_fn).call(this, __privateGet(this, _videoTrack), data, type, timestamp, duration, meta, compositionTimeOffset);
|
|
if (__privateGet(this, _options).fastStart === "fragmented" && __privateGet(this, _audioTrack)) {
|
|
while (__privateGet(this, _audioSampleQueue).length > 0 && __privateGet(this, _audioSampleQueue)[0].decodeTimestamp <= videoSample.decodeTimestamp) {
|
|
let audioSample = __privateGet(this, _audioSampleQueue).shift();
|
|
__privateMethod(this, _addSampleToTrack, addSampleToTrack_fn).call(this, __privateGet(this, _audioTrack), audioSample);
|
|
}
|
|
if (videoSample.decodeTimestamp <= __privateGet(this, _audioTrack).lastDecodeTimestamp) {
|
|
__privateMethod(this, _addSampleToTrack, addSampleToTrack_fn).call(this, __privateGet(this, _videoTrack), videoSample);
|
|
} else {
|
|
__privateGet(this, _videoSampleQueue).push(videoSample);
|
|
}
|
|
} else {
|
|
__privateMethod(this, _addSampleToTrack, addSampleToTrack_fn).call(this, __privateGet(this, _videoTrack), videoSample);
|
|
}
|
|
}
|
|
addAudioChunk(sample, meta, timestamp) {
|
|
let data = new Uint8Array(sample.byteLength);
|
|
sample.copyTo(data);
|
|
this.addAudioChunkRaw(data, sample.type, timestamp ?? sample.timestamp, sample.duration, meta);
|
|
}
|
|
addAudioChunkRaw(data, type, timestamp, duration, meta) {
|
|
__privateMethod(this, _ensureNotFinalized, ensureNotFinalized_fn).call(this);
|
|
if (!__privateGet(this, _options).audio)
|
|
throw new Error("No audio track declared.");
|
|
if (typeof __privateGet(this, _options).fastStart === "object" && __privateGet(this, _audioTrack).samples.length === __privateGet(this, _options).fastStart.expectedAudioChunks) {
|
|
throw new Error(`Cannot add more audio chunks than specified in 'fastStart' (${__privateGet(this, _options).fastStart.expectedAudioChunks}).`);
|
|
}
|
|
let audioSample = __privateMethod(this, _createSampleForTrack, createSampleForTrack_fn).call(this, __privateGet(this, _audioTrack), data, type, timestamp, duration, meta);
|
|
if (__privateGet(this, _options).fastStart === "fragmented" && __privateGet(this, _videoTrack)) {
|
|
while (__privateGet(this, _videoSampleQueue).length > 0 && __privateGet(this, _videoSampleQueue)[0].decodeTimestamp <= audioSample.decodeTimestamp) {
|
|
let videoSample = __privateGet(this, _videoSampleQueue).shift();
|
|
__privateMethod(this, _addSampleToTrack, addSampleToTrack_fn).call(this, __privateGet(this, _videoTrack), videoSample);
|
|
}
|
|
if (audioSample.decodeTimestamp <= __privateGet(this, _videoTrack).lastDecodeTimestamp) {
|
|
__privateMethod(this, _addSampleToTrack, addSampleToTrack_fn).call(this, __privateGet(this, _audioTrack), audioSample);
|
|
} else {
|
|
__privateGet(this, _audioSampleQueue).push(audioSample);
|
|
}
|
|
} else {
|
|
__privateMethod(this, _addSampleToTrack, addSampleToTrack_fn).call(this, __privateGet(this, _audioTrack), audioSample);
|
|
}
|
|
}
|
|
/** Finalizes the file, making it ready for use. Must be called after all video and audio chunks have been added. */
|
|
finalize() {
|
|
if (__privateGet(this, _finalized)) {
|
|
throw new Error("Cannot finalize a muxer more than once.");
|
|
}
|
|
if (__privateGet(this, _options).fastStart === "fragmented") {
|
|
for (let videoSample of __privateGet(this, _videoSampleQueue))
|
|
__privateMethod(this, _addSampleToTrack, addSampleToTrack_fn).call(this, __privateGet(this, _videoTrack), videoSample);
|
|
for (let audioSample of __privateGet(this, _audioSampleQueue))
|
|
__privateMethod(this, _addSampleToTrack, addSampleToTrack_fn).call(this, __privateGet(this, _audioTrack), audioSample);
|
|
__privateMethod(this, _finalizeFragment, finalizeFragment_fn).call(this, false);
|
|
} else {
|
|
if (__privateGet(this, _videoTrack))
|
|
__privateMethod(this, _finalizeCurrentChunk, finalizeCurrentChunk_fn).call(this, __privateGet(this, _videoTrack));
|
|
if (__privateGet(this, _audioTrack))
|
|
__privateMethod(this, _finalizeCurrentChunk, finalizeCurrentChunk_fn).call(this, __privateGet(this, _audioTrack));
|
|
}
|
|
let tracks = [__privateGet(this, _videoTrack), __privateGet(this, _audioTrack)].filter(Boolean);
|
|
if (__privateGet(this, _options).fastStart === "in-memory") {
|
|
let mdatSize;
|
|
for (let i = 0; i < 2; i++) {
|
|
let movieBox2 = moov(tracks, __privateGet(this, _creationTime));
|
|
let movieBoxSize = __privateGet(this, _writer).measureBox(movieBox2);
|
|
mdatSize = __privateGet(this, _writer).measureBox(__privateGet(this, _mdat));
|
|
let currentChunkPos = __privateGet(this, _writer).pos + movieBoxSize + mdatSize;
|
|
for (let chunk of __privateGet(this, _finalizedChunks)) {
|
|
chunk.offset = currentChunkPos;
|
|
for (let { data } of chunk.samples) {
|
|
currentChunkPos += data.byteLength;
|
|
mdatSize += data.byteLength;
|
|
}
|
|
}
|
|
if (currentChunkPos < 2 ** 32)
|
|
break;
|
|
if (mdatSize >= 2 ** 32)
|
|
__privateGet(this, _mdat).largeSize = true;
|
|
}
|
|
let movieBox = moov(tracks, __privateGet(this, _creationTime));
|
|
__privateGet(this, _writer).writeBox(movieBox);
|
|
__privateGet(this, _mdat).size = mdatSize;
|
|
__privateGet(this, _writer).writeBox(__privateGet(this, _mdat));
|
|
for (let chunk of __privateGet(this, _finalizedChunks)) {
|
|
for (let sample of chunk.samples) {
|
|
__privateGet(this, _writer).write(sample.data);
|
|
sample.data = null;
|
|
}
|
|
}
|
|
} else if (__privateGet(this, _options).fastStart === "fragmented") {
|
|
let startPos = __privateGet(this, _writer).pos;
|
|
let mfraBox = mfra(tracks);
|
|
__privateGet(this, _writer).writeBox(mfraBox);
|
|
let mfraBoxSize = __privateGet(this, _writer).pos - startPos;
|
|
__privateGet(this, _writer).seek(__privateGet(this, _writer).pos - 4);
|
|
__privateGet(this, _writer).writeU32(mfraBoxSize);
|
|
} else {
|
|
let mdatPos = __privateGet(this, _writer).offsets.get(__privateGet(this, _mdat));
|
|
let mdatSize = __privateGet(this, _writer).pos - mdatPos;
|
|
__privateGet(this, _mdat).size = mdatSize;
|
|
__privateGet(this, _mdat).largeSize = mdatSize >= 2 ** 32;
|
|
__privateGet(this, _writer).patchBox(__privateGet(this, _mdat));
|
|
let movieBox = moov(tracks, __privateGet(this, _creationTime));
|
|
if (typeof __privateGet(this, _options).fastStart === "object") {
|
|
__privateGet(this, _writer).seek(__privateGet(this, _ftypSize));
|
|
__privateGet(this, _writer).writeBox(movieBox);
|
|
let remainingBytes = mdatPos - __privateGet(this, _writer).pos;
|
|
__privateGet(this, _writer).writeBox(free(remainingBytes));
|
|
} else {
|
|
__privateGet(this, _writer).writeBox(movieBox);
|
|
}
|
|
}
|
|
__privateMethod(this, _maybeFlushStreamingTargetWriter, maybeFlushStreamingTargetWriter_fn).call(this);
|
|
__privateGet(this, _writer).finalize();
|
|
__privateSet(this, _finalized, true);
|
|
}
|
|
};
|
|
_options = new WeakMap();
|
|
_writer = new WeakMap();
|
|
_ftypSize = new WeakMap();
|
|
_mdat = new WeakMap();
|
|
_videoTrack = new WeakMap();
|
|
_audioTrack = new WeakMap();
|
|
_creationTime = new WeakMap();
|
|
_finalizedChunks = new WeakMap();
|
|
_nextFragmentNumber = new WeakMap();
|
|
_videoSampleQueue = new WeakMap();
|
|
_audioSampleQueue = new WeakMap();
|
|
_finalized = new WeakMap();
|
|
_validateOptions = new WeakSet();
|
|
validateOptions_fn = function(options) {
|
|
if (options.video) {
|
|
if (!SUPPORTED_VIDEO_CODECS2.includes(options.video.codec)) {
|
|
throw new Error(`Unsupported video codec: ${options.video.codec}`);
|
|
}
|
|
const videoRotation = options.video.rotation;
|
|
if (typeof videoRotation === "number" && ![0, 90, 180, 270].includes(videoRotation)) {
|
|
throw new Error(`Invalid video rotation: ${videoRotation}. Has to be 0, 90, 180 or 270.`);
|
|
} else if (Array.isArray(videoRotation) && (videoRotation.length !== 9 || videoRotation.some((value) => typeof value !== "number"))) {
|
|
throw new Error(`Invalid video transformation matrix: ${videoRotation.join()}`);
|
|
}
|
|
}
|
|
if (options.audio && !SUPPORTED_AUDIO_CODECS2.includes(options.audio.codec)) {
|
|
throw new Error(`Unsupported audio codec: ${options.audio.codec}`);
|
|
}
|
|
if (options.firstTimestampBehavior && !FIRST_TIMESTAMP_BEHAVIORS.includes(options.firstTimestampBehavior)) {
|
|
throw new Error(`Invalid first timestamp behavior: ${options.firstTimestampBehavior}`);
|
|
}
|
|
if (typeof options.fastStart === "object") {
|
|
if (options.video && options.fastStart.expectedVideoChunks === void 0) {
|
|
throw new Error(`'fastStart' is an object but is missing property 'expectedVideoChunks'.`);
|
|
}
|
|
if (options.audio && options.fastStart.expectedAudioChunks === void 0) {
|
|
throw new Error(`'fastStart' is an object but is missing property 'expectedAudioChunks'.`);
|
|
}
|
|
} else if (![false, "in-memory", "fragmented"].includes(options.fastStart)) {
|
|
throw new Error(`'fastStart' option must be false, 'in-memory', 'fragmented' or an object.`);
|
|
}
|
|
};
|
|
_writeHeader = new WeakSet();
|
|
writeHeader_fn = function() {
|
|
__privateGet(this, _writer).writeBox(ftyp({
|
|
holdsAvc: __privateGet(this, _options).video?.codec === "avc",
|
|
fragmented: __privateGet(this, _options).fastStart === "fragmented"
|
|
}));
|
|
__privateSet(this, _ftypSize, __privateGet(this, _writer).pos);
|
|
if (__privateGet(this, _options).fastStart === "in-memory") {
|
|
__privateSet(this, _mdat, mdat(false));
|
|
} else if (__privateGet(this, _options).fastStart === "fragmented") {
|
|
} else {
|
|
if (typeof __privateGet(this, _options).fastStart === "object") {
|
|
let moovSizeUpperBound = __privateMethod(this, _computeMoovSizeUpperBound, computeMoovSizeUpperBound_fn).call(this);
|
|
__privateGet(this, _writer).seek(__privateGet(this, _writer).pos + moovSizeUpperBound);
|
|
}
|
|
__privateSet(this, _mdat, mdat(true));
|
|
__privateGet(this, _writer).writeBox(__privateGet(this, _mdat));
|
|
}
|
|
__privateMethod(this, _maybeFlushStreamingTargetWriter, maybeFlushStreamingTargetWriter_fn).call(this);
|
|
};
|
|
_computeMoovSizeUpperBound = new WeakSet();
|
|
computeMoovSizeUpperBound_fn = function() {
|
|
if (typeof __privateGet(this, _options).fastStart !== "object")
|
|
return;
|
|
let upperBound = 0;
|
|
let sampleCounts = [
|
|
__privateGet(this, _options).fastStart.expectedVideoChunks,
|
|
__privateGet(this, _options).fastStart.expectedAudioChunks
|
|
];
|
|
for (let n of sampleCounts) {
|
|
if (!n)
|
|
continue;
|
|
upperBound += (4 + 4) * Math.ceil(2 / 3 * n);
|
|
upperBound += 4 * n;
|
|
upperBound += (4 + 4 + 4) * Math.ceil(2 / 3 * n);
|
|
upperBound += 4 * n;
|
|
upperBound += 8 * n;
|
|
}
|
|
upperBound += 4096;
|
|
return upperBound;
|
|
};
|
|
_prepareTracks = new WeakSet();
|
|
prepareTracks_fn = function() {
|
|
if (__privateGet(this, _options).video) {
|
|
__privateSet(this, _videoTrack, {
|
|
id: 1,
|
|
info: {
|
|
type: "video",
|
|
codec: __privateGet(this, _options).video.codec,
|
|
width: __privateGet(this, _options).video.width,
|
|
height: __privateGet(this, _options).video.height,
|
|
rotation: __privateGet(this, _options).video.rotation ?? 0,
|
|
decoderConfig: null
|
|
},
|
|
timescale: 11520,
|
|
// Timescale used by FFmpeg, contains many common frame rates as factors
|
|
samples: [],
|
|
finalizedChunks: [],
|
|
currentChunk: null,
|
|
firstDecodeTimestamp: void 0,
|
|
lastDecodeTimestamp: -1,
|
|
timeToSampleTable: [],
|
|
compositionTimeOffsetTable: [],
|
|
lastTimescaleUnits: null,
|
|
lastSample: null,
|
|
compactlyCodedChunkTable: []
|
|
});
|
|
}
|
|
if (__privateGet(this, _options).audio) {
|
|
let guessedCodecPrivate = __privateMethod(this, _generateMpeg4AudioSpecificConfig, generateMpeg4AudioSpecificConfig_fn).call(
|
|
this,
|
|
2,
|
|
// Object type for AAC-LC, since it's the most common
|
|
__privateGet(this, _options).audio.sampleRate,
|
|
__privateGet(this, _options).audio.numberOfChannels
|
|
);
|
|
__privateSet(this, _audioTrack, {
|
|
id: __privateGet(this, _options).video ? 2 : 1,
|
|
info: {
|
|
type: "audio",
|
|
codec: __privateGet(this, _options).audio.codec,
|
|
numberOfChannels: __privateGet(this, _options).audio.numberOfChannels,
|
|
sampleRate: __privateGet(this, _options).audio.sampleRate,
|
|
decoderConfig: {
|
|
codec: __privateGet(this, _options).audio.codec,
|
|
description: guessedCodecPrivate,
|
|
numberOfChannels: __privateGet(this, _options).audio.numberOfChannels,
|
|
sampleRate: __privateGet(this, _options).audio.sampleRate
|
|
}
|
|
},
|
|
timescale: __privateGet(this, _options).audio.sampleRate,
|
|
samples: [],
|
|
finalizedChunks: [],
|
|
currentChunk: null,
|
|
firstDecodeTimestamp: void 0,
|
|
lastDecodeTimestamp: -1,
|
|
timeToSampleTable: [],
|
|
compositionTimeOffsetTable: [],
|
|
lastTimescaleUnits: null,
|
|
lastSample: null,
|
|
compactlyCodedChunkTable: []
|
|
});
|
|
}
|
|
};
|
|
_generateMpeg4AudioSpecificConfig = new WeakSet();
|
|
generateMpeg4AudioSpecificConfig_fn = function(objectType, sampleRate, numberOfChannels) {
|
|
let frequencyIndices = [96e3, 88200, 64e3, 48e3, 44100, 32e3, 24e3, 22050, 16e3, 12e3, 11025, 8e3, 7350];
|
|
let frequencyIndex = frequencyIndices.indexOf(sampleRate);
|
|
let channelConfig = numberOfChannels;
|
|
let configBits = "";
|
|
configBits += objectType.toString(2).padStart(5, "0");
|
|
configBits += frequencyIndex.toString(2).padStart(4, "0");
|
|
if (frequencyIndex === 15)
|
|
configBits += sampleRate.toString(2).padStart(24, "0");
|
|
configBits += channelConfig.toString(2).padStart(4, "0");
|
|
let paddingLength = Math.ceil(configBits.length / 8) * 8;
|
|
configBits = configBits.padEnd(paddingLength, "0");
|
|
let configBytes = new Uint8Array(configBits.length / 8);
|
|
for (let i = 0; i < configBits.length; i += 8) {
|
|
configBytes[i / 8] = parseInt(configBits.slice(i, i + 8), 2);
|
|
}
|
|
return configBytes;
|
|
};
|
|
_createSampleForTrack = new WeakSet();
|
|
createSampleForTrack_fn = function(track, data, type, timestamp, duration, meta, compositionTimeOffset) {
|
|
let presentationTimestampInSeconds = timestamp / 1e6;
|
|
let decodeTimestampInSeconds = (timestamp - (compositionTimeOffset ?? 0)) / 1e6;
|
|
let durationInSeconds = duration / 1e6;
|
|
let adjusted = __privateMethod(this, _validateTimestamp, validateTimestamp_fn).call(this, presentationTimestampInSeconds, decodeTimestampInSeconds, track);
|
|
presentationTimestampInSeconds = adjusted.presentationTimestamp;
|
|
decodeTimestampInSeconds = adjusted.decodeTimestamp;
|
|
if (meta?.decoderConfig) {
|
|
if (track.info.decoderConfig === null) {
|
|
track.info.decoderConfig = meta.decoderConfig;
|
|
} else {
|
|
Object.assign(track.info.decoderConfig, meta.decoderConfig);
|
|
}
|
|
}
|
|
let sample = {
|
|
presentationTimestamp: presentationTimestampInSeconds,
|
|
decodeTimestamp: decodeTimestampInSeconds,
|
|
duration: durationInSeconds,
|
|
data,
|
|
size: data.byteLength,
|
|
type,
|
|
// Will be refined once the next sample comes in
|
|
timescaleUnitsToNextSample: intoTimescale(durationInSeconds, track.timescale)
|
|
};
|
|
return sample;
|
|
};
|
|
_addSampleToTrack = new WeakSet();
|
|
addSampleToTrack_fn = function(track, sample) {
|
|
if (__privateGet(this, _options).fastStart !== "fragmented") {
|
|
track.samples.push(sample);
|
|
}
|
|
const sampleCompositionTimeOffset = intoTimescale(sample.presentationTimestamp - sample.decodeTimestamp, track.timescale);
|
|
if (track.lastTimescaleUnits !== null) {
|
|
let timescaleUnits = intoTimescale(sample.decodeTimestamp, track.timescale, false);
|
|
let delta = Math.round(timescaleUnits - track.lastTimescaleUnits);
|
|
track.lastTimescaleUnits += delta;
|
|
track.lastSample.timescaleUnitsToNextSample = delta;
|
|
if (__privateGet(this, _options).fastStart !== "fragmented") {
|
|
let lastTableEntry = last(track.timeToSampleTable);
|
|
if (lastTableEntry.sampleCount === 1) {
|
|
lastTableEntry.sampleDelta = delta;
|
|
lastTableEntry.sampleCount++;
|
|
} else if (lastTableEntry.sampleDelta === delta) {
|
|
lastTableEntry.sampleCount++;
|
|
} else {
|
|
lastTableEntry.sampleCount--;
|
|
track.timeToSampleTable.push({
|
|
sampleCount: 2,
|
|
sampleDelta: delta
|
|
});
|
|
}
|
|
const lastCompositionTimeOffsetTableEntry = last(track.compositionTimeOffsetTable);
|
|
if (lastCompositionTimeOffsetTableEntry.sampleCompositionTimeOffset === sampleCompositionTimeOffset) {
|
|
lastCompositionTimeOffsetTableEntry.sampleCount++;
|
|
} else {
|
|
track.compositionTimeOffsetTable.push({
|
|
sampleCount: 1,
|
|
sampleCompositionTimeOffset
|
|
});
|
|
}
|
|
}
|
|
} else {
|
|
track.lastTimescaleUnits = 0;
|
|
if (__privateGet(this, _options).fastStart !== "fragmented") {
|
|
track.timeToSampleTable.push({
|
|
sampleCount: 1,
|
|
sampleDelta: intoTimescale(sample.duration, track.timescale)
|
|
});
|
|
track.compositionTimeOffsetTable.push({
|
|
sampleCount: 1,
|
|
sampleCompositionTimeOffset
|
|
});
|
|
}
|
|
}
|
|
track.lastSample = sample;
|
|
let beginNewChunk = false;
|
|
if (!track.currentChunk) {
|
|
beginNewChunk = true;
|
|
} else {
|
|
let currentChunkDuration = sample.presentationTimestamp - track.currentChunk.startTimestamp;
|
|
if (__privateGet(this, _options).fastStart === "fragmented") {
|
|
let mostImportantTrack = __privateGet(this, _videoTrack) ?? __privateGet(this, _audioTrack);
|
|
if (track === mostImportantTrack && sample.type === "key" && currentChunkDuration >= 1) {
|
|
beginNewChunk = true;
|
|
__privateMethod(this, _finalizeFragment, finalizeFragment_fn).call(this);
|
|
}
|
|
} else {
|
|
beginNewChunk = currentChunkDuration >= 0.5;
|
|
}
|
|
}
|
|
if (beginNewChunk) {
|
|
if (track.currentChunk) {
|
|
__privateMethod(this, _finalizeCurrentChunk, finalizeCurrentChunk_fn).call(this, track);
|
|
}
|
|
track.currentChunk = {
|
|
startTimestamp: sample.presentationTimestamp,
|
|
samples: []
|
|
};
|
|
}
|
|
track.currentChunk.samples.push(sample);
|
|
};
|
|
_validateTimestamp = new WeakSet();
|
|
validateTimestamp_fn = function(presentationTimestamp, decodeTimestamp, track) {
|
|
const strictTimestampBehavior = __privateGet(this, _options).firstTimestampBehavior === "strict";
|
|
const noLastDecodeTimestamp = track.lastDecodeTimestamp === -1;
|
|
const timestampNonZero = decodeTimestamp !== 0;
|
|
if (strictTimestampBehavior && noLastDecodeTimestamp && timestampNonZero) {
|
|
throw new Error(
|
|
`The first chunk for your media track must have a timestamp of 0 (received DTS=${decodeTimestamp}).Non-zero first timestamps are often caused by directly piping frames or audio data from a MediaStreamTrack into the encoder. Their timestamps are typically relative to the age of thedocument, which is probably what you want.
|
|
|
|
If you want to offset all timestamps of a track such that the first one is zero, set firstTimestampBehavior: 'offset' in the options.
|
|
`
|
|
);
|
|
} else if (__privateGet(this, _options).firstTimestampBehavior === "offset" || __privateGet(this, _options).firstTimestampBehavior === "cross-track-offset") {
|
|
if (track.firstDecodeTimestamp === void 0) {
|
|
track.firstDecodeTimestamp = decodeTimestamp;
|
|
}
|
|
let baseDecodeTimestamp;
|
|
if (__privateGet(this, _options).firstTimestampBehavior === "offset") {
|
|
baseDecodeTimestamp = track.firstDecodeTimestamp;
|
|
} else {
|
|
baseDecodeTimestamp = Math.min(
|
|
__privateGet(this, _videoTrack)?.firstDecodeTimestamp ?? Infinity,
|
|
__privateGet(this, _audioTrack)?.firstDecodeTimestamp ?? Infinity
|
|
);
|
|
}
|
|
decodeTimestamp -= baseDecodeTimestamp;
|
|
presentationTimestamp -= baseDecodeTimestamp;
|
|
}
|
|
if (decodeTimestamp < track.lastDecodeTimestamp) {
|
|
throw new Error(
|
|
`Timestamps must be monotonically increasing (DTS went from ${track.lastDecodeTimestamp * 1e6} to ${decodeTimestamp * 1e6}).`
|
|
);
|
|
}
|
|
track.lastDecodeTimestamp = decodeTimestamp;
|
|
return { presentationTimestamp, decodeTimestamp };
|
|
};
|
|
_finalizeCurrentChunk = new WeakSet();
|
|
finalizeCurrentChunk_fn = function(track) {
|
|
if (__privateGet(this, _options).fastStart === "fragmented") {
|
|
throw new Error("Can't finalize individual chunks 'fastStart' is set to 'fragmented'.");
|
|
}
|
|
if (!track.currentChunk)
|
|
return;
|
|
track.finalizedChunks.push(track.currentChunk);
|
|
__privateGet(this, _finalizedChunks).push(track.currentChunk);
|
|
if (track.compactlyCodedChunkTable.length === 0 || last(track.compactlyCodedChunkTable).samplesPerChunk !== track.currentChunk.samples.length) {
|
|
track.compactlyCodedChunkTable.push({
|
|
firstChunk: track.finalizedChunks.length,
|
|
// 1-indexed
|
|
samplesPerChunk: track.currentChunk.samples.length
|
|
});
|
|
}
|
|
if (__privateGet(this, _options).fastStart === "in-memory") {
|
|
track.currentChunk.offset = 0;
|
|
return;
|
|
}
|
|
track.currentChunk.offset = __privateGet(this, _writer).pos;
|
|
for (let sample of track.currentChunk.samples) {
|
|
__privateGet(this, _writer).write(sample.data);
|
|
sample.data = null;
|
|
}
|
|
__privateMethod(this, _maybeFlushStreamingTargetWriter, maybeFlushStreamingTargetWriter_fn).call(this);
|
|
};
|
|
_finalizeFragment = new WeakSet();
|
|
finalizeFragment_fn = function(flushStreamingWriter = true) {
|
|
if (__privateGet(this, _options).fastStart !== "fragmented") {
|
|
throw new Error("Can't finalize a fragment unless 'fastStart' is set to 'fragmented'.");
|
|
}
|
|
let tracks = [__privateGet(this, _videoTrack), __privateGet(this, _audioTrack)].filter((track) => track && track.currentChunk);
|
|
if (tracks.length === 0)
|
|
return;
|
|
let fragmentNumber = __privateWrapper(this, _nextFragmentNumber)._++;
|
|
if (fragmentNumber === 1) {
|
|
let movieBox = moov(tracks, __privateGet(this, _creationTime), true);
|
|
__privateGet(this, _writer).writeBox(movieBox);
|
|
}
|
|
let moofOffset = __privateGet(this, _writer).pos;
|
|
let moofBox = moof(fragmentNumber, tracks);
|
|
__privateGet(this, _writer).writeBox(moofBox);
|
|
{
|
|
let mdatBox = mdat(false);
|
|
let totalTrackSampleSize = 0;
|
|
for (let track of tracks) {
|
|
for (let sample of track.currentChunk.samples) {
|
|
totalTrackSampleSize += sample.size;
|
|
}
|
|
}
|
|
let mdatSize = __privateGet(this, _writer).measureBox(mdatBox) + totalTrackSampleSize;
|
|
if (mdatSize >= 2 ** 32) {
|
|
mdatBox.largeSize = true;
|
|
mdatSize = __privateGet(this, _writer).measureBox(mdatBox) + totalTrackSampleSize;
|
|
}
|
|
mdatBox.size = mdatSize;
|
|
__privateGet(this, _writer).writeBox(mdatBox);
|
|
}
|
|
for (let track of tracks) {
|
|
track.currentChunk.offset = __privateGet(this, _writer).pos;
|
|
track.currentChunk.moofOffset = moofOffset;
|
|
for (let sample of track.currentChunk.samples) {
|
|
__privateGet(this, _writer).write(sample.data);
|
|
sample.data = null;
|
|
}
|
|
}
|
|
let endPos = __privateGet(this, _writer).pos;
|
|
__privateGet(this, _writer).seek(__privateGet(this, _writer).offsets.get(moofBox));
|
|
let newMoofBox = moof(fragmentNumber, tracks);
|
|
__privateGet(this, _writer).writeBox(newMoofBox);
|
|
__privateGet(this, _writer).seek(endPos);
|
|
for (let track of tracks) {
|
|
track.finalizedChunks.push(track.currentChunk);
|
|
__privateGet(this, _finalizedChunks).push(track.currentChunk);
|
|
track.currentChunk = null;
|
|
}
|
|
if (flushStreamingWriter) {
|
|
__privateMethod(this, _maybeFlushStreamingTargetWriter, maybeFlushStreamingTargetWriter_fn).call(this);
|
|
}
|
|
};
|
|
_maybeFlushStreamingTargetWriter = new WeakSet();
|
|
maybeFlushStreamingTargetWriter_fn = function() {
|
|
if (__privateGet(this, _writer) instanceof StreamTargetWriter) {
|
|
__privateGet(this, _writer).flush();
|
|
}
|
|
};
|
|
_ensureNotFinalized = new WeakSet();
|
|
ensureNotFinalized_fn = function() {
|
|
if (__privateGet(this, _finalized)) {
|
|
throw new Error("Cannot add new video or audio chunks after the file has been finalized.");
|
|
}
|
|
};
|
|
return __toCommonJS(src_exports);
|
|
})();
|
|
if (typeof module === "object" && typeof module.exports === "object") Object.assign(module.exports, Mp4Muxer)
|