From 4098a3726eabd98cf10c564e2578f8eccd5fe8f8 Mon Sep 17 00:00:00 2001
From: Tulir Asokan <tulir@maunium.net>
Date: Sun, 8 Sep 2024 13:47:49 +0300
Subject: [PATCH] event: ensure MSC1767 audio has empty waveform

---
 event/audio.go | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/event/audio.go b/event/audio.go
index 798acc8c..9eeb8edb 100644
--- a/event/audio.go
+++ b/event/audio.go
@@ -1,8 +1,21 @@
 package event
 
+import (
+	"encoding/json"
+)
+
 type MSC1767Audio struct {
 	Duration int   `json:"duration"`
 	Waveform []int `json:"waveform"`
 }
 
+type serializableMSC1767Audio MSC1767Audio
+
+func (ma *MSC1767Audio) MarshalJSON() ([]byte, error) {
+	if ma.Waveform == nil {
+		ma.Waveform = []int{}
+	}
+	return json.Marshal((*serializableMSC1767Audio)(ma))
+}
+
 type MSC3245Voice struct{}