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jpegdec: when scanning for 0xff marker ends, ensure desired result

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Otherwise, any non 0xff byte at end of data would be mistaken for
a tag byte, and in case of a frame_len 0 tag subsequently lead to an
infinite loop.
This commit is contained in:
Mark Nauwelaerts 2009-07-28 16:11:36 +02:00
parent 52482a3741
commit 7a89fb0468
1 changed files with 4 additions and 0 deletions
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4
ext/jpeg/gstjpegdec.c
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@ -433,6 +433,10 @@ gst_jpeg_dec_parse_image_data (GstJpegDec * dec)
/* at the very least we expect 0xff 0xNN, thus end-1 */
while (*data != 0xff && data < end - 1)
++data;
if (G_UNLIKELY (*data != 0xff)) {
GST_DEBUG ("at end of input and no next marker found, need more data");
return 0;
}
}
/* Skip over extra 0xff */
while (*data == 0xff && data < end)