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Add WAVE demuxer

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This commit is contained in:
Vanilagy
2025-01-07 20:57:16 +01:00
parent 48c9a225e2
commit 3041989cf3
5 changed files with 378 additions and 8 deletions
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src/input-format.ts
+43 -6
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@@ -2,6 +2,8 @@ import { Demuxer } from './demuxer';
import { Input } from './input';
import { IsobmffDemuxer } from './isobmff/isobmff-demuxer';
import { IsobmffReader } from './isobmff/isobmff-reader';
import { RiffReader } from './wave/riff-reader';
import { WaveDemuxer } from './wave/wave-demuxer';
/** @public */
export abstract class InputFormat {
@@ -35,7 +37,7 @@ export abstract class IsobmffInputFormat extends InputFormat {
}
/** @internal */
override _createDemuxer(input: Input) {
_createDemuxer(input: Input) {
return new IsobmffDemuxer(input);
}
}
@@ -43,7 +45,7 @@ export abstract class IsobmffInputFormat extends InputFormat {
/** @public */
export class Mp4InputFormat extends IsobmffInputFormat {
/** @internal */
override async _canReadInput(input: Input) {
async _canReadInput(input: Input) {
const majorBrand = await this._getMajorBrand(input);
return !!majorBrand && majorBrand !== 'qt ';
}
@@ -60,7 +62,7 @@ export class Mp4InputFormat extends IsobmffInputFormat {
/** @public */
export class QuickTimeInputFormat extends IsobmffInputFormat {
/** @internal */
override async _canReadInput(input: Input) {
async _canReadInput(input: Input) {
const majorBrand = await this._getMajorBrand(input);
return majorBrand === 'qt ';
}
@@ -77,12 +79,12 @@ export class QuickTimeInputFormat extends IsobmffInputFormat {
/** @public */
export class MatroskaInputFormat extends InputFormat {
/** @internal */
override async _canReadInput() {
async _canReadInput() {
return false; // TODO
}
/** @internal */
override _createDemuxer(): never {
_createDemuxer(): never {
throw new Error('Not implemented');
}
@@ -95,6 +97,39 @@ export class MatroskaInputFormat extends InputFormat {
}
}
/** @public */
export class WaveInputFormat extends InputFormat {
async _canReadInput(input: Input) {
const sourceSize = await input._mainReader.source._getSize();
if (sourceSize < 12) {
return false;
}
const riffReader = new RiffReader(input._mainReader);
const riffType = riffReader.readAscii(4);
if (riffType !== 'RIFF' && riffType !== 'RIFX') {
return false;
}
riffReader.pos = 8;
const format = riffReader.readAscii(4);
return format === 'WAVE';
}
/** @internal */
_createDemuxer(input: Input) {
return new WaveDemuxer(input);
}
getName() {
return 'WAVE';
}
getMimeType() {
return 'audio/wav';
}
}
/** @public */
export const MP4 = new Mp4InputFormat();
/** @public */
@@ -103,6 +138,8 @@ export const QTFF = new QuickTimeInputFormat();
export const MATROSKA = new MatroskaInputFormat();
/** @public */
export const WEBM = MATROSKA;
/** @public */
export const WAVE = new WaveInputFormat();
/** @public */
export const ALL_FORMATS: InputFormat[] = [MP4, QTFF, MATROSKA];
export const ALL_FORMATS: InputFormat[] = [MP4, QTFF, MATROSKA, WAVE];