[FFmpeg-cvslog] mxfdec: Sanity-check SampleRate

[Tomas Härdin]

ffmpeg | branch: master | Tomas Härdin <tomas.hardin at codemill.se> | Thu Jan 26 14:12:50 2012 +0100| [d6b81ff949af13969ac2ae4cdf5852a6d09c267f] | committer: Diego Biurrun

mxfdec: Sanity-check SampleRate

This avoids a SIGFPE if SampleRate is missing or set to naughty values.

Signed-off-by: Diego Biurrun <diego at biurrun.de>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=d6b81ff949af13969ac2ae4cdf5852a6d09c267f
---

 libavformat/mxfdec.c |    5 ++++-
 1 files changed, 4 insertions(+), 1 deletions(-)

diff --git a/libavformat/mxfdec.c b/libavformat/mxfdec.c
index 9a89469..50c40c9 100644
--- a/libavformat/mxfdec.c
+++ b/libavformat/mxfdec.c
@@ -1431,7 +1431,10 @@ static int mxf_parse_structural_metadata(MXFContext *mxf)
                 st->codec->codec_id = container_ul->id;
             st->codec->channels = descriptor->channels;
             st->codec->bits_per_coded_sample = descriptor->bits_per_sample;
-            st->codec->sample_rate = descriptor->sample_rate.num / descriptor->sample_rate.den;
+
+            if (descriptor->sample_rate.den > 0)
+                st->codec->sample_rate = descriptor->sample_rate.num / descriptor->sample_rate.den;
+
             /* TODO: implement CODEC_ID_RAWAUDIO */
             if (st->codec->codec_id == CODEC_ID_PCM_S16LE) {
                 if (descriptor->bits_per_sample > 16 && descriptor->bits_per_sample <= 24)