From d180fce6c707d22a69206c1f8efeabd38424de95 Mon Sep 17 00:00:00 2001
From: Carl Eugen Hoyos <ceffmpeg@gmail.com>
Date: Tue, 17 Oct 2017 23:00:07 +0200
Subject: lavf/cafenc: Only allow mono and stereo for Opus.

Found-by: James Almer
---
 libavformat/cafenc.c | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'libavformat/cafenc.c')

diff --git a/libavformat/cafenc.c b/libavformat/cafenc.c
index 211b046563..0f7c4ebbb3 100644
--- a/libavformat/cafenc.c
+++ b/libavformat/cafenc.c
@@ -123,6 +123,11 @@ static int caf_write_header(AVFormatContext *s)
         return AVERROR_PATCHWELCOME;
     }
 
+    if (par->codec_id == AV_CODEC_ID_OPUS && par->channels > 2) {
+        av_log(s, AV_LOG_ERROR, "Only mono and stereo are supported for Opus\n");
+        return AVERROR_INVALIDDATA;
+    }
+
     if (!codec_tag) {
         av_log(s, AV_LOG_ERROR, "unsupported codec\n");
         return AVERROR_INVALIDDATA;
-- 
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