refactor(mediabunny): [PKG-MB-03] type inputs and cancel owned loads

packages/artplayer-proxy-mediabunny/src/input.ts

@@ -0,0 +1,37 @@
+import type { InputOptions } from 'mediabunny'
+import {
+  ALL_FORMATS,
+  BlobSource,
+  HLS_FORMATS,
+  Input,
+  ReadableStreamSource,
+  UrlSource,
+} from 'mediabunny'
+
+const M3U8_RE = /\.m3u8(?:$|[?#])/i
+
+export function isHlsSource(src: unknown): boolean {
+  return typeof src === 'string' && M3U8_RE.test(src)
+}
+
+export function normalizeSource(src: unknown): unknown {
+  if (typeof src === 'string')
+    return new UrlSource(src)
+  if (src instanceof Blob)
+    return new BlobSource(src)
+  if (typeof ReadableStream !== 'undefined' && src instanceof ReadableStream)
+    return new ReadableStreamSource(src)
+  return src ?? null
+}
+
+export function createInput(src: unknown): Input | null {
+  const source = normalizeSource(src)
+  if (!source)
+    return null
+
+  return new Input({
+    // Preserve SDK Source/SourceRef pass-through and its historical validation errors.
+    source: source as InputOptions['source'],
+    formats: isHlsSource(src) ? HLS_FORMATS : ALL_FORMATS,
+  })
+}