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vc1parser: do not overwrite buffer

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I do not know the bitstream format, but this seems likely
to be what was intended. Also add a check on the number of
items to read.

https://bugzilla.gnome.org/show_bug.cgi?id=662776
This commit is contained in:
Vincent Penquerc'h 2011-10-26 16:29:35 +01:00 committed by Sebastian Dröge
parent 32a1e05795
commit ca2f96caac
1 changed files with 9 additions and 1 deletions
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10
gst-libs/gst/codecparsers/gstvc1parser.c
View file

@ -1985,8 +1985,16 @@ gst_vc1_parse_entry_point_header (const guint8 * data, gsize size,
entrypoint->quantizer = gst_bit_reader_get_bits_uint8_unchecked (&br, 2);
if (advanced->hrd_param_flag) {
if (seqhdr->advanced.hrd_param.hrd_num_leaky_buckets >
MAX_HRD_NUM_LEAKY_BUCKETS) {
GST_WARNING
("hrd_num_leaky_buckets (%d) > MAX_HRD_NUM_LEAKY_BUCKETS (%d)",
seqhdr->advanced.hrd_param.hrd_num_leaky_buckets,
MAX_HRD_NUM_LEAKY_BUCKETS);
goto failed;
}
for (i = 0; i < seqhdr->advanced.hrd_param.hrd_num_leaky_buckets; i++)
READ_UINT8 (&br, entrypoint->hrd_full[MAX_HRD_NUM_LEAKY_BUCKETS], 8);
READ_UINT8 (&br, entrypoint->hrd_full[i], 8);
}
READ_UINT8 (&br, entrypoint->coded_size_flag, 1);