From 0dcfccaa691bf533b0f144b6d98b49eb59f1f3ab Mon Sep 17 00:00:00 2001
From: Paul B Mahol <onemda@gmail.com>
Date: Tue, 29 Jan 2013 10:54:02 +0000
Subject: [PATCH] auenc: strict check for supported codec
Also check number of streams and give error message why muxing failed.
This prevents muxing unsupported codec with known and supported tag.
Signed-off-by: Paul B Mahol <onemda@gmail.com>
---
libavformat/au.c | 10 +++++++++-
1 file changed, 9 insertions(+), 1 deletion(-)
diff --git a/libavformat/au.c b/libavformat/au.c
index f8871621105..db2ab275587 100644
--- a/libavformat/au.c
+++ b/libavformat/au.c
@@ -156,8 +156,16 @@ static int au_write_header(AVFormatContext *s)
AVIOContext *pb = s->pb;
AVCodecContext *enc = s->streams[0]->codec;
- if (!enc->codec_tag)
+ if (s->nb_streams != 1) {
+ av_log(s, AV_LOG_ERROR, "only one stream is supported\n");
return AVERROR(EINVAL);
+ }
+
+ enc->codec_tag = ff_codec_get_tag(codec_au_tags, enc->codec_id);
+ if (!enc->codec_tag) {
+ av_log(s, AV_LOG_ERROR, "unsupported codec\n");
+ return AVERROR(EINVAL);
+ }
ffio_wfourcc(pb, ".snd"); /* magic number */
avio_wb32(pb, AU_HEADER_SIZE); /* header size */
--
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