From f7813a5324be39d13ab536c245d15dfc602a7849 Mon Sep 17 00:00:00 2001
From: Tim Redfern <tim@eclectronics.org>
Date: Sun, 29 Dec 2013 12:19:38 +0000
Subject: basic type mechanism working

---
 ffmpeg/libavformat/wavenc.c | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'ffmpeg/libavformat/wavenc.c')

diff --git a/ffmpeg/libavformat/wavenc.c b/ffmpeg/libavformat/wavenc.c
index fea38cf..0067dfe 100644
--- a/ffmpeg/libavformat/wavenc.c
+++ b/ffmpeg/libavformat/wavenc.c
@@ -116,6 +116,11 @@ static int wav_write_header(AVFormatContext *s)
     AVIOContext *pb = s->pb;
     int64_t fmt;
 
+    if (s->nb_streams != 1) {
+        av_log(s, AV_LOG_ERROR, "WAVE files have exactly one stream\n");
+        return AVERROR(EINVAL);
+    }
+
     if (wav->rf64 == RF64_ALWAYS) {
         ffio_wfourcc(pb, "RF64");
         avio_wl32(pb, -1); /* RF64 chunk size: use size in ds64 */
-- 
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