45 lines
1.3 KiB
JavaScript
45 lines
1.3 KiB
JavaScript
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"use strict";
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Object.defineProperty(exports, "__esModule", { value: true });
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exports.TheoraParser = void 0;
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const debug_1 = require("debug");
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const Theora_1 = require("./Theora");
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const debug = (0, debug_1.default)('music-metadata:parser:ogg:theora');
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/**
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* Ref:
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* - https://theora.org/doc/Theora.pdf
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*/
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class TheoraParser {
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constructor(metadata, options, tokenizer) {
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this.metadata = metadata;
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this.tokenizer = tokenizer;
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}
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/**
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* Vorbis 1 parser
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* @param header Ogg Page Header
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* @param pageData Page data
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*/
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parsePage(header, pageData) {
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if (header.headerType.firstPage) {
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this.parseFirstPage(header, pageData);
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}
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}
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flush() {
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debug('flush');
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}
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calculateDuration(header) {
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debug('duration calculation not implemented');
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}
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/**
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* Parse first Theora Ogg page. the initial identification header packet
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* @param {IPageHeader} header
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* @param {Buffer} pageData
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*/
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parseFirstPage(header, pageData) {
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debug('First Ogg/Theora page');
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this.metadata.setFormat('codec', 'Theora');
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const idHeader = Theora_1.IdentificationHeader.get(pageData, 0);
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this.metadata.setFormat('bitrate', idHeader.nombr);
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}
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}
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exports.TheoraParser = TheoraParser;
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