This avoids divisions by zero later.
Reported-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC: libav-sta...@libav.org
---
libavformat/segafilm.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/libavformat/segafilm.c b/libavformat/segafilm.c
index adf2475..ac9c873 100644
--- a/libavformat/segafilm.c
+++ b/libavformat/segafilm.c
@@ -111,6 +111,10 @@ static int film_read_header(AVFormatContext *s)
return AVERROR(EIO);
film->audio_samplerate = AV_RB16(&scratch[24]);
film->audio_channels = scratch[21];
+ if (film->audio_channels == 0) {
+ av_log(s, AV_LOG_ERROR, "Invalid number of channels\n");
+ return AVERROR_INVALIDDATA;
+ }
film->audio_bits = scratch[22];
if (scratch[23] == 2)
film->audio_type = AV_CODEC_ID_ADPCM_ADX;
--
1.7.9.5
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