Log ManagedMediaSource buffer removal

Author: robwalch

src/controller/base-stream-controller.ts

@@ -43,7 +43,7 @@ import {
 } from '../utils/level-helper';
 import { estimatedAudioBitrate } from '../utils/mediacapabilities-helper';
 import { appendUint8Array } from '../utils/mp4-tools';
-import TimeRanges from '../utils/time-ranges';
+import { timeRangesToString } from '../utils/time-ranges';
 import type { FragmentTracker } from './fragment-tracker';
 import type { HlsConfig } from '../config';
 import type TransmuxerInterface from '../demux/transmuxer-interface';
@@ -826,7 +826,7 @@ export default class BaseStreamController
         part ? ' part: ' + part.index : ''
       } of ${this.fragInfo(frag, false, part)} > buffer:${
         media
-          ? TimeRanges.toString(BufferHelper.getBuffered(media))
+          ? timeRangesToString(BufferHelper.getBuffered(media))
           : '(detached)'
       })`,
     );

src/controller/buffer-controller.ts

@@ -23,6 +23,7 @@ import {
   isManagedMediaSource,
 } from '../utils/mediasource-helper';
 import { stringify } from '../utils/safe-json-stringify';
+import { timeRangesToString } from '../utils/time-ranges';
 import type { FragmentTracker } from './fragment-tracker';
 import type { HlsConfig } from '../config';
 import type Hls from '../hls';
@@ -1687,6 +1688,9 @@ transfer tracks: ${stringify(transferredTracks, (key, value) => (key === 'initSe
           // If media was ejected check for a change. Added ranges are redundant with changes on 'updateend' event.
           const removedRanges = event.removedRanges;
           if (removedRanges?.length) {
+            this.log(
+              `${type} buffer removed ${timeRangesToString(removedRanges)}`,
+            );
             this.hls.trigger(Events.BUFFER_FLUSHED, {
               type: type,
             });

src/utils/time-ranges.ts

@@ -2,16 +2,12 @@
  *  TimeRanges to string helper
  */
 
-const TimeRanges = {
-  toString: function (r: TimeRanges) {
-    let log = '';
-    const len = r.length;
-    for (let i = 0; i < len; i++) {
-      log += `[${r.start(i).toFixed(3)}-${r.end(i).toFixed(3)}]`;
-    }
+export function timeRangesToString(r: TimeRanges) {
+  let log = '';
+  const len = r.length;
+  for (let i = 0; i < len; i++) {
+    log += `[${r.start(i).toFixed(3)}-${r.end(i).toFixed(3)}]`;
+  }
 
-    return log;
-  },
-};
-
-export default TimeRanges;
+  return log;
+}