32 lines
1.1 KiB
JavaScript
32 lines
1.1 KiB
JavaScript
import initDebug from 'debug';
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import { VorbisStream } from '../vorbis/VorbisStream.js';
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import * as Speex from './Speex.js';
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const debug = initDebug('music-metadata:parser:ogg:speex');
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/**
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* Speex, RFC 5574
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* Ref:
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* - https://www.speex.org/docs/manual/speex-manual/
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* - https://tools.ietf.org/html/rfc5574
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*/
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export class SpeexStream extends VorbisStream {
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constructor(metadata, options, _tokenizer) {
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super(metadata, options);
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}
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/**
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* Parse first Speex Ogg page
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* @param {IPageHeader} header
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* @param {Uint8Array} pageData
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*/
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parseFirstPage(_header, pageData) {
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debug('First Ogg/Speex page');
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const speexHeader = Speex.Header.get(pageData, 0);
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this.metadata.setFormat('codec', `Speex ${speexHeader.version}`);
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this.metadata.setFormat('numberOfChannels', speexHeader.nb_channels);
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this.metadata.setFormat('sampleRate', speexHeader.rate);
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if (speexHeader.bitrate !== -1) {
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this.metadata.setFormat('bitrate', speexHeader.bitrate);
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}
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this.metadata.setAudioOnly();
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}
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}
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