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Remove xml-js for fast-xml-parser.

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Kavin 2023-12-06 09:47:29 +00:00
parent 7ff4fae53f
commit 4d43249e25
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4 changed files with 73 additions and 186 deletions
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178
src/utils/DashUtils.js
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@ -1,42 +1,33 @@
// Based of https://github.com/GilgusMaximus/yt-dash-manifest-generator/blob/master/src/DashGenerator.js
import { Buffer } from "buffer";
window.Buffer = Buffer;
import { json2xml } from "xml-js";
import { XMLBuilder } from "fast-xml-parser";
export function generate_dash_file_from_formats(VideoFormats, VideoLength) {
const generatedJSON = generate_xmljs_json_from_data(VideoFormats, VideoLength);
return json2xml(generatedJSON);
const builder = new XMLBuilder({
ignoreAttributes: false,
allowBooleanAttributes: true,
suppressBooleanAttributes: false,
attributeNamePrefix: "_",
});
return builder.build(generatedJSON);
}
function generate_xmljs_json_from_data(VideoFormatArray, VideoLength) {
const convertJSON = {
declaration: {
attributes: {
version: "1.0",
encoding: "utf-8",
"?xml": {
_version: "1.0",
_encoding: "utf-8",
MPD: {
_xmlns: "urn:mpeg:dash:schema:mpd:2011",
_profiles: "urn:mpeg:dash:profile:full:2011",
_minBufferTime: "PT1.5S",
_type: "static",
_mediaPresentationDuration: `PT${VideoLength}S`,
Period: {
AdaptationSet: generate_adaptation_set(VideoFormatArray),
},
},
},
elements: [
{
type: "element",
name: "MPD",
attributes: {
xmlns: "urn:mpeg:dash:schema:mpd:2011",
profiles: "urn:mpeg:dash:profile:full:2011",
minBufferTime: "PT1.5S",
type: "static",
mediaPresentationDuration: `PT${VideoLength}S`,
},
elements: [
{
type: "element",
name: "Period",
elements: generate_adaptation_set(VideoFormatArray),
},
],
},
],
};
return convertJSON;
}
@ -76,34 +67,27 @@ function generate_adaptation_set(VideoFormatArray) {
mimeAudioObjs.forEach(mimeAudioObj => {
const adapSet = {
type: "element",
name: "AdaptationSet",
attributes: {
id: mimeAudioObj.audioTrackId,
lang: mimeAudioObj.audioTrackId?.substr(0, 2),
mimeType: mimeAudioObj.mimeType,
startWithSAP: "1",
subsegmentAlignment: "true",
},
elements: [],
_id: mimeAudioObj.audioTrackId,
_lang: mimeAudioObj.audioTrackId?.substr(0, 2),
_mimeType: mimeAudioObj.mimeType,
_startWithSAP: "1",
_subsegmentAlignment: "true",
Representation: [],
};
let isVideoFormat = false;
if (mimeAudioObj.mimeType.includes("video")) {
isVideoFormat = true;
}
if (isVideoFormat) {
adapSet.attributes.scanType = "progressive";
adapSet["_scanType"] = "progressive";
}
for (var i = 0; i < mimeAudioObj.videoFormats.length; i++) {
const videoFormat = mimeAudioObj.videoFormats[i];
if (isVideoFormat) {
adapSet.elements.push(generate_representation_video(videoFormat));
adapSet.Representation.push(generate_representation_video(videoFormat));
} else {
adapSet.elements.push(generate_representation_audio(videoFormat));
adapSet.Representation.push(generate_representation_audio(videoFormat));
}
}
@ -114,94 +98,40 @@ function generate_adaptation_set(VideoFormatArray) {
function generate_representation_audio(Format) {
const representation = {
type: "element",
name: "Representation",
attributes: {
id: Format.itag,
codecs: Format.codec,
bandwidth: Format.bitrate,
_id: Format.itag,
_codecs: Format.codec,
_bandwidth: Format.bitrate,
AudioChannelConfiguration: {
_schemeIdUri: "urn:mpeg:dash:23003:3:audio_channel_configuration:2011",
_value: "2",
},
elements: [
{
type: "element",
name: "AudioChannelConfiguration",
attributes: {
schemeIdUri: "urn:mpeg:dash:23003:3:audio_channel_configuration:2011",
value: "2",
},
BaseURL: Format.url,
SegmentBase: {
_indexRange: `${Format.indexStart}-${Format.indexEnd}`,
Initialization: {
_range: `${Format.initStart}-${Format.initEnd}`,
},
{
type: "element",
name: "BaseURL",
elements: [
{
type: "text",
text: Format.url,
},
],
},
{
type: "element",
name: "SegmentBase",
attributes: {
indexRange: `${Format.indexStart}-${Format.indexEnd}`,
},
elements: [
{
type: "element",
name: "Initialization",
attributes: {
range: `${Format.initStart}-${Format.initEnd}`,
},
},
],
},
],
},
};
return representation;
}
function generate_representation_video(Format) {
const representation = {
type: "element",
name: "Representation",
attributes: {
id: Format.itag,
codecs: Format.codec,
bandwidth: Format.bitrate,
width: Format.width,
height: Format.height,
maxPlayoutRate: "1",
frameRate: Format.fps,
_id: Format.itag,
_codecs: Format.codec,
_bandwidth: Format.bitrate,
_width: Format.width,
_height: Format.height,
_maxPlayoutRate: "1",
_frameRate: Format.fps,
BaseURL: Format.url,
SegmentBase: {
_indexRange: `${Format.indexStart}-${Format.indexEnd}`,
Initialization: {
_range: `${Format.initStart}-${Format.initEnd}`,
},
},
elements: [
{
type: "element",
name: "BaseURL",
elements: [
{
type: "text",
text: Format.url,
},
],
},
{
type: "element",
name: "SegmentBase",
attributes: {
indexRange: `${Format.indexStart}-${Format.indexEnd}`,
},
elements: [
{
type: "element",
name: "Initialization",
attributes: {
range: `${Format.initStart}-${Format.initEnd}`,
},
},
],
},
],
};
return representation;
}