From 899f4894dbb98e9473cf57e5891f49a798e1c38e Mon Sep 17 00:00:00 2001
From: kixelated <kixelated@gmail.com>
Date: Wed, 25 Oct 2023 11:51:41 +0900
Subject: [PATCH] Temporary fix to disable MSE audio. (#68)

---
 lib/playback/index.ts       | 5 +++++
 lib/playback/mse/segment.ts | 4 ++++
 lib/playback/mse/source.ts  | 4 ++++
 3 files changed, 13 insertions(+)

diff --git a/lib/playback/index.ts b/lib/playback/index.ts
index 036d57b..842e998 100644
--- a/lib/playback/index.ts
+++ b/lib/playback/index.ts
@@ -75,6 +75,11 @@ export class Player {
 				throw new Error(`expected CMAF track`)
 			}
 
+			if (isAudioTrack(track) && this.#backend instanceof MSE) {
+				// TODO temporary hack to disable audio in MSE
+				continue
+			}
+
 			inits.add(track.init_track)
 			tracks.push(track)
 		}
diff --git a/lib/playback/mse/segment.ts b/lib/playback/mse/segment.ts
index 0cfb767..699cc9f 100644
--- a/lib/playback/mse/segment.ts
+++ b/lib/playback/mse/segment.ts
@@ -73,6 +73,10 @@ export class Segment {
 			mdat.write(stream)
 		}
 
+		if (stream.buffer.byteLength == 0) {
+			return this.done
+		}
+
 		this.source.initialize(this.init)
 		this.source.append(stream.buffer)
 
diff --git a/lib/playback/mse/source.ts b/lib/playback/mse/source.ts
index 22b95ba..e99273b 100644
--- a/lib/playback/mse/source.ts
+++ b/lib/playback/mse/source.ts
@@ -45,6 +45,10 @@ export class Source {
 
 	// Append the segment data to the buffer.
 	append(data: Uint8Array | ArrayBuffer) {
+		if (data.byteLength == 0) {
+			throw new Error("empty append")
+		}
+
 		this.queue.push({
 			kind: "data",
 			data: data,