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Add HLS live mode

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Vanilagy
2026-03-31 14:13:00 +02:00
parent 6b677291cd
commit b06e407d65
13 changed files with 812 additions and 401 deletions
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src/target.ts
+36 -12
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@@ -9,18 +9,28 @@
import type { FileHandle } from 'node:fs/promises';
import { Output } from './output';
import * as nodeAlias from './node';
import { assert } from './misc';
import { assert, EventEmitter } from './misc';
const node = typeof nodeAlias !== 'undefined'
? nodeAlias // Aliasing it prevents some bundler warnings
: undefined!;
/**
* The events emitted by a {@link Target}.
* @group Output targets
* @public
*/
export type TargetEvents = {
write: { start: number; end: number };
finalized: void;
};
/**
* Base class for targets, specifying where output files are written.
* @group Output targets
* @public
*/
export abstract class Target {
export abstract class Target extends EventEmitter<TargetEvents> {
/** @internal */
_output: Output | null = null;
@@ -43,11 +53,25 @@ export abstract class Target {
*
* Use this callback to track the size of the output file as it grows. But be warned, this function is chatty and
* gets called *extremely* often.
* @deprecated Use `target.on('write', ({ start, end }) => ...)` instead.
*/
onwrite: ((start: number, end: number) => unknown) | null = null;
/** @deprecated Use `target.on('finalized', () => ...)` instead. */
onfinalized: (() => unknown) | null = null;
/** @internal */
_dispatchWrite(start: number, end: number) {
this.onwrite?.(start, end);
this.emit('write', { start, end });
}
/** @internal */
_dispatchFinalized() {
this.onfinalized?.();
this.emit('finalized');
}
slice(offset: number) {
if (!Number.isInteger(offset) || offset < 0) {
throw new TypeError('offset must be a non-negative integer.');
@@ -139,7 +163,7 @@ export class BufferTarget extends Target {
this._maxPos = Math.max(this._maxPos, pos + data.byteLength);
this.onwrite?.(pos, pos + data.byteLength);
this._dispatchWrite(pos, pos + data.byteLength);
}
/** @internal */
@@ -148,7 +172,7 @@ export class BufferTarget extends Target {
/** @internal */
async _finalize() {
this.buffer = this._buffer.slice(0, this._maxPos);
this.onfinalized?.();
this._dispatchFinalized();
}
/** @internal */
@@ -293,7 +317,7 @@ export class StreamTarget extends Target {
this._lastWriteEnd = Math.max(this._lastWriteEnd, pos + data.byteLength);
this.onwrite?.(pos, pos + data.byteLength);
this._dispatchWrite(pos, pos + data.byteLength);
}
/** @internal */
@@ -502,7 +526,7 @@ export class StreamTarget extends Target {
await this._streamWriter.ready;
await this._streamWriter.close();
this.onfinalized?.();
this._dispatchFinalized();
}
/** @internal */
@@ -575,7 +599,7 @@ export class FilePathTarget extends Target {
/** @internal */
_write(data: Uint8Array, pos: number) {
this._streamTarget._write(data, pos);
this.onwrite?.(pos, pos + data.byteLength);
this._dispatchWrite(pos, pos + data.byteLength);
}
/** @internal */
@@ -586,7 +610,7 @@ export class FilePathTarget extends Target {
/** @internal */
async _finalize() {
await this._streamTarget._finalize();
this.onfinalized?.();
this._dispatchFinalized();
}
/** @internal */
@@ -608,7 +632,7 @@ export class NullTarget extends Target {
/** @internal */
_write(data: Uint8Array, pos: number) {
this.onwrite?.(pos, pos + data.byteLength);
this._dispatchWrite(pos, pos + data.byteLength);
}
/** @internal */
@@ -616,7 +640,7 @@ export class NullTarget extends Target {
/** @internal */
async _finalize() {
this.onfinalized?.();
this._dispatchFinalized();
}
/** @internal */
@@ -643,7 +667,7 @@ export class RangedTarget extends Target {
/** @internal */
_write(data: Uint8Array, pos: number): void {
this._baseTarget._write(data, this._offset + pos);
this.onwrite?.(pos, pos + data.byteLength);
this._dispatchWrite(pos, pos + data.byteLength);
}
/** @internal */
@@ -653,7 +677,7 @@ export class RangedTarget extends Target {
/** @internal */
async _finalize() {
this.onfinalized?.();
this._dispatchFinalized();
}
/** @internal */