feat(pcm): increase buffer size for smoother playback (06e6f044) · Commits · e / tools / webadb

libraries/pcm-player/worker/worker.ts

+13 −15

Original line number	Diff line number	Diff line
		@@ -21,6 +21,7 @@ abstract class SourceProcessor<T>
		#chunkSampleCounts: number[] = [];
		#totalSampleCount = 0;

		#starting = true;
		#speedUp = false;
		#readOffset = 0;
		#inputOffset = 0;
		@@ -33,8 +34,7 @@ abstract class SourceProcessor<T>
		this.#readBuffer = new Float32Array(this.channelCount);

		this.port.onmessage = (event) => {
		while (this.#totalSampleCount > 16000) {
		console.log("[Audio] Buffer overflow, dropping samples");
		while (this.#totalSampleCount > 0.35 * 48000) {
		this.#chunks.shift();
		const count = this.#chunkSampleCounts.shift()!;
		this.#totalSampleCount -= count;
		@@ -46,8 +46,7 @@ abstract class SourceProcessor<T>
		this.#chunkSampleCounts.push(length);
		this.#totalSampleCount += length;

		if (!this.#speedUp && this.#totalSampleCount > 8000) {
		console.log("[Audio] Speeding up");
		if (!this.#speedUp && this.#totalSampleCount > 0.25 * 48000) {
		this.#speedUp = true;
		this.#readOffset = 0;
		this.#inputOffset = 0;
		@@ -59,10 +58,17 @@ abstract class SourceProcessor<T>
		protected abstract createSource(data: ArrayBuffer[]): [T, number];

		process(_inputs: Float32Array[][], [outputs]: Float32Array[][]) {
		// Stop speeding up when buffer is below 0.05s
		if (this.#speedUp && this.#totalSampleCount < 3000) {
		console.log("[Audio] Restoring normal speed");
		if (this.#starting) {
		if (this.#totalSampleCount < 0.1 * 48000) {
		return true;
		} else {
		this.#starting = false;
		}
		}

		if (this.#speedUp && this.#totalSampleCount < 0.15 * 48000) {
		this.#speedUp = false;
		this.#starting = true;
		}

		const outputLength = outputs![0]!.length;
		@@ -153,14 +159,6 @@ abstract class SourceProcessor<T>
		this.#chunks.shift();
		this.#chunkSampleCounts.shift();
		}

		if (outputIndex < outputLength) {
		console.log(
		`[Audio] Buffer underflow, inserting silence: ${
		outputLength - outputIndex
		} samples`,
		);
		}
		}

		#read(offset: number) {

libraries/scrcpy/src/options/codec.ts

+1 −1

Original line number	Diff line number	Diff line
		@@ -37,7 +37,7 @@ export class ScrcpyAudioCodec implements ScrcpyOptionValue {
		"raw",
		0x00_72_61_77,
		"audio/raw",
		"1",
		"",
		);

		readonly optionValue: string;