From 126933fb5ed3116049e69ac95aa0b118cb651090 Mon Sep 17 00:00:00 2001
From: Carl Kittelberger <icedream@icedream.pw>
Date: Mon, 22 Jan 2024 00:47:44 +0100
Subject: [PATCH] Use metadata hash to avoid duped metadata.

This was causing high CPU usage.
---
 icedreammusic/np/main.go | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/icedreammusic/np/main.go b/icedreammusic/np/main.go
index 52d0ffc..e7da17b 100644
--- a/icedreammusic/np/main.go
+++ b/icedreammusic/np/main.go
@@ -39,6 +39,7 @@ func init() {
 func watchMetadata(ctx context.Context) <-chan *libnp.Info {
 	ticker := time.NewTicker(time.Second)
 	c := make(chan *libnp.Info)
+	var lastMetadataID [64]byte
 	go func(ticker *time.Ticker) {
 		for {
 			select {
@@ -50,6 +51,14 @@ func watchMetadata(ctx context.Context) <-chan *libnp.Info {
 					os.Stderr.WriteString("WARNING: " + err.Error() + "\n")
 					continue
 				}
+				var newMetadataID [64]byte
+				if info != nil {
+					newMetadataID = generateIDFromMetadata(*info)
+				}
+				if newMetadataID == lastMetadataID {
+					// metadata did not change
+					continue
+				}
 				c <- info
 			}
 		}