From 0e78e575ed47eb8e405cf81e3f487b56af7ce90a Mon Sep 17 00:00:00 2001
From: Michael Niedermayer <michaelni@gmx.at>
Date: Sat, 8 Sep 2012 21:18:47 +0200
Subject: [PATCH] swr/auto_matrix: treat a single channel as mono instead of
failing
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
---
libswresample/rematrix.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/libswresample/rematrix.c b/libswresample/rematrix.c
index c4c218de54f..1117f235ccb 100644
--- a/libswresample/rematrix.c
+++ b/libswresample/rematrix.c
@@ -106,6 +106,13 @@ static int clean_layout(SwrContext *s, int64_t layout){
if((layout & AV_CH_LAYOUT_STEREO_DOWNMIX) == AV_CH_LAYOUT_STEREO_DOWNMIX)
return AV_CH_LAYOUT_STEREO;
+ if(layout && layout != AV_CH_FRONT_CENTER && !(layout&(layout-1))) {
+ char buf[128];
+ av_get_channel_layout_string(buf, sizeof(buf), -1, layout);
+ av_log(s, AV_LOG_VERBOSE, "Treating %s as mono\n", buf);
+ return AV_CH_FRONT_CENTER;
+ }
+
return layout;
}
--
GitLab