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Implement PCM decoder, add PCM support to ISOBMFF demuxer

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This commit is contained in:
Vanilagy
2025-01-01 21:31:00 +01:00
parent d203d75bdd
commit fac4e4bf7b
7 changed files with 511 additions and 72 deletions
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src/codec.ts
+28 -4
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@@ -11,9 +11,32 @@ import {
import { SubtitleMetadata } from './subtitles';
/** @public */
export const VIDEO_CODECS = ['avc', 'hevc', 'vp8', 'vp9', 'av1'] as const;
export const VIDEO_CODECS = [
'avc',
'hevc',
'vp8',
'vp9',
'av1',
] as const;
/** @public */
export const AUDIO_CODECS = ['aac', 'mp3', 'opus'] as const; // TODO add the rest
export const PCM_CODECS = [
'pcm-u8',
'pcm-s8',
'pcm-s16be',
'pcm-s16le',
'pcm-s24be',
'pcm-s24le',
'pcm-s32be',
'pcm-s32le',
'pcm-f32be',
'pcm-f32le',
] as const;
export const AUDIO_CODECS = [
'aac',
'mp3',
'opus',
...PCM_CODECS,
] as const; // TODO add the rest
/** @public */
export const SUBTITLE_CODECS = ['webvtt'] as const; // TODO add the rest
@@ -21,6 +44,7 @@ export const SUBTITLE_CODECS = ['webvtt'] as const; // TODO add the rest
export type VideoCodec = typeof VIDEO_CODECS[number];
/** @public */
export type AudioCodec = typeof AUDIO_CODECS[number];
export type PcmAudioCodec = typeof PCM_CODECS[number];
/** @public */
export type SubtitleCodec = typeof SUBTITLE_CODECS[number];
/** @public */
@@ -361,7 +385,6 @@ export const buildAudioCodecString = (codec: AudioCodec, numberOfChannels: numbe
return 'vorbis'; // Also easy, this one
}
// eslint-disable-next-line @typescript-eslint/restrict-template-expressions
throw new TypeError(`Unhandled codec '${codec}'.`);
};
@@ -373,11 +396,12 @@ export const extractAudioCodecString = (codec: AudioCodec, description: Uint8Arr
return 'mp3';
} else if (codec === 'opus') {
return 'opus';
} else if (codec.startsWith('pcm-')) {
return codec;
} else if (codec === 'vorbis') {
return 'vorbis';
}
// eslint-disable-next-line @typescript-eslint/restrict-template-expressions
throw new TypeError(`Unhandled codec '${codec}'.`);
};