[libav-commits] alacenc: do not generate invalid multi-channel ALAC files

Justin Ruggles git at libav.org
Tue Jan 3 20:10:16 CET 2012


Module: libav
Branch: master
Commit: 149e1b0468ca8828fe198025c4662a957871bd02

Author:    Justin Ruggles <justin.ruggles at gmail.com>
Committer: Justin Ruggles <justin.ruggles at gmail.com>
Date:      Wed Dec  7 12:04:21 2011 -0500

alacenc: do not generate invalid multi-channel ALAC files

---

 libavcodec/alacenc.c |    8 ++++++++
 1 files changed, 8 insertions(+), 0 deletions(-)

diff --git a/libavcodec/alacenc.c b/libavcodec/alacenc.c
index 7e29a24..e7977b3 100644
--- a/libavcodec/alacenc.c
+++ b/libavcodec/alacenc.c
@@ -391,6 +391,14 @@ static av_cold int alac_encode_init(AVCodecContext *avctx)
         return -1;
     }
 
+    /* TODO: Correctly implement multi-channel ALAC.
+             It is similar to multi-channel AAC, in that it has a series of
+             single-channel (SCE), channel-pair (CPE), and LFE elements. */
+    if (avctx->channels > 2) {
+        av_log(avctx, AV_LOG_ERROR, "only mono or stereo input is currently supported\n");
+        return AVERROR_PATCHWELCOME;
+    }
+
     // Set default compression level
     if (avctx->compression_level == FF_COMPRESSION_DEFAULT)
         s->compression_level = 2;



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