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Decrease AudioBuffer chunking size, support more MP3 sample rates, lift MP3 encoder memory limit

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Vanilagy
2025-08-15 14:19:06 +02:00
parent 89df8fdae2
commit 3be94cc788
8 changed files with 67 additions and 22 deletions
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src/media-source.ts
+8 -7
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@@ -1334,16 +1334,17 @@ export class AudioBufferSource extends AudioSource {
* @returns A Promise that resolves once the output is ready to receive more samples. You should await this Promise
* to respect writer and encoder backpressure.
*/
add(audioBuffer: AudioBuffer) {
async add(audioBuffer: AudioBuffer) {
if (!(audioBuffer instanceof AudioBuffer)) {
throw new TypeError('audioBuffer must be an AudioBuffer.');
}
const audioSamples = AudioSample.fromAudioBuffer(audioBuffer, this._accumulatedTime);
const promises = audioSamples.map(sample => this._encoder.add(sample, true));
const iterator = AudioSample._fromAudioBuffer(audioBuffer, this._accumulatedTime);
this._accumulatedTime += audioBuffer.duration;
return Promise.all(promises);
for (const audioSample of iterator) {
await this._encoder.add(audioSample, true);
}
}
/** @internal */
@@ -1466,10 +1467,10 @@ export class MediaStreamAudioTrackSource extends AudioSource {
let totalDuration = 0;
this._scriptProcessorNode.onaudioprocess = (event) => {
const audioSamples = AudioSample.fromAudioBuffer(event.inputBuffer, totalDuration);
const iterator = AudioSample._fromAudioBuffer(event.inputBuffer, totalDuration);
totalDuration += event.inputBuffer.duration;
for (const audioSample of audioSamples) {
for (const audioSample of iterator) {
if (!audioReceived) {
audioReceived = true;