4xm: prevent overflow during block alignment calculation

[ffmpeg] / libavformat / electronicarts.c

diff --git a/libavformat/electronicarts.c b/libavformat/electronicarts.c
index 80ce4c6e37834c515c456090c427e8cbc7146262..30eb723bd50000abbc152f0c498ad8ba0e17e6f2 100644 (file)
--- a/libavformat/electronicarts.c
+++ b/libavformat/electronicarts.c
@@ -557,7 +557,7 @@ static int ea_read_header(AVFormatContext *s)
         st->codecpar->channels              = ea->num_channels;
         st->codecpar->sample_rate           = ea->sample_rate;
         st->codecpar->bits_per_coded_sample = ea->bytes * 8;
-        st->codecpar->bit_rate              = st->codecpar->channels *
+        st->codecpar->bit_rate              = (int64_t)st->codecpar->channels *
                                               st->codecpar->sample_rate *
                                               st->codecpar->bits_per_coded_sample / 4;
         st->codecpar->block_align           = st->codecpar->channels *