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Implement MP3 muxer

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Vanilagy
2025-01-26 11:45:56 +01:00
parent 7205d9445b
commit d3566305df
11 changed files with 482 additions and 148 deletions
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src/wave/wave-muxer.ts
+7 -9
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@@ -24,7 +24,7 @@ export class WaveMuxer extends Muxer {
}
async addEncodedVideoSample() {
throw new Error('WAVE format does not support video.');
throw new Error('WAVE does not support video.');
}
async addEncodedAudioSample(
@@ -46,19 +46,17 @@ export class WaveMuxer extends Muxer {
this.validateAndNormalizeTimestamp(track, sample.timestamp, sample.type === 'key');
if (sample.data) {
this.output._writer.write(sample.data);
this.dataSize += sample.data.byteLength;
}
this.writer.write(sample.data);
this.dataSize += sample.data.byteLength;
await this.output._writer.flush();
await this.writer.flush();
} finally {
release();
}
}
async addSubtitleCue() {
throw new Error('WAVE format does not support subtitles.');
throw new Error('WAVE does not support subtitles.');
}
private writeHeader(track: OutputAudioTrack, config: AudioDecoderConfig) {
@@ -102,7 +100,7 @@ export class WaveMuxer extends Muxer {
}
async finalize() {
const currentPos = this.writer.getPos();
const endPos = this.writer.getPos();
// Write file size
this.writer.seek(4);
@@ -112,6 +110,6 @@ export class WaveMuxer extends Muxer {
this.writer.seek(40);
this.riffWriter.writeU32(this.dataSize);
this.writer.seek(currentPos);
this.writer.seek(endPos);
}
}