From c89ed445b9fcd4d6c76cbf3278dd2d7d7e2e0a42 Mon Sep 17 00:00:00 2001
From: Carl Hetherington <cth@carlh.net>
Date: Tue, 24 Jan 2023 00:54:52 +0100
Subject: Only write the appropriate number of AudioChannelLabelSubDescriptors
 (DoM #2431).

---
 src/cpl.cc | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'src')

diff --git a/src/cpl.cc b/src/cpl.cc
index 74f6f0bd..d73def9f 100644
--- a/src/cpl.cc
+++ b/src/cpl.cc
@@ -512,6 +512,9 @@ CPL::maybe_write_composition_metadata_asset (xmlpp::Element* node) const
 
 				for (auto i: channels) {
 					auto channel = reinterpret_cast<ASDCP::MXF::AudioChannelLabelSubDescriptor*>(i);
+					if (static_cast<int>(channel->MCAChannelID) > asset->channels()) {
+						continue;
+					}
 					auto ch = mca_subs->add_child("AudioChannelLabelSubDescriptor", "r0");
 					channel->InstanceUID.EncodeString(buffer, sizeof(buffer));
 					ch->add_child("InstanceID", "r1")->add_child_text("urn:uuid:" + string(buffer));
-- 
cgit v1.2.3