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libavutil/channel_layout: Check strtol*() for failure

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Fixes assertion failure
Fixes: 4f5814bb15d2dda6fc18ef9791b13816/signal_sigabrt_7ffff6ae7cc9_65_7209d160d168b76f311be6cd64a548eb.wv

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2015-11-05 19:24:33 +01:00
parent 3692d859f4
commit c9bfd6a8c3
1 changed files with 5 additions and 2 deletions
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7
libavutil/channel_layout.c
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@ -122,13 +122,16 @@ static uint64_t get_channel_layout_single(const char *name, int name_len)
strlen(channel_names[i].name) == name_len &&
!memcmp(channel_names[i].name, name, name_len))
return (int64_t)1 << i;
errno = 0;
i = strtol(name, &end, 10);
if ((end + 1 - name == name_len && *end == 'c'))
if (!errno && (end + 1 - name == name_len && *end == 'c'))
return av_get_default_channel_layout(i);
errno = 0;
layout = strtoll(name, &end, 0);
if (end - name == name_len)
if (!errno && end - name == name_len)
return FFMAX(layout, 0);
return 0;
}