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mpeg4parser: prevent assertion when scanning for sync code

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Only search if there is indeed enough data to be searched otherwise
an assertion is raised
This commit is contained in:
Thiago Santos 2016-02-19 16:40:54 -03:00
parent ab31900b64
commit 115945b663
1 changed files with 5 additions and 2 deletions
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7
gst-libs/gst/codecparsers/gstmpeg4parser.c
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@ -481,8 +481,11 @@ gst_mpeg4_parse (GstMpeg4Packet * packet, gboolean skip_user_data,
packet->type = (GstMpeg4StartCode) (data[off1 + 3]);
find_end:
off2 = gst_byte_reader_masked_scan_uint32 (&br, 0xffffff00, 0x00000100,
off1 + 4, size - off1 - 4);
if (off1 < size - 4)
off2 = gst_byte_reader_masked_scan_uint32 (&br, 0xffffff00, 0x00000100,
off1 + 4, size - off1 - 4);
else
off2 = -1;
if (off2 == -1) {
GST_DEBUG ("Packet start %d, No end found", off1 + 4);