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h264decoder: Don't scan empty buffer

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gst_adapter_masked_scan_uint32_peek() asserts if size is 0. Don't
try and scan in that case. This fixes assertion that would some times
happen when the stream is corrupted.

https://bugzilla.gnome.org/show_bug.cgi?id=796832
This commit is contained in:
Nicolas Dufresne 2018-07-18 13:07:51 -04:00
parent f5eb4faa59
commit 927536b791
1 changed files with 3 additions and 0 deletions
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3
gst-libs/gst/vaapi/gstvaapidecoder_h264.c
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@ -4236,6 +4236,9 @@ decode_slice (GstVaapiDecoderH264 * decoder, GstVaapiDecoderUnit * unit)
static inline gint static inline gint
scan_for_start_code (GstAdapter * adapter, guint ofs, guint size, guint32 * scp) scan_for_start_code (GstAdapter * adapter, guint ofs, guint size, guint32 * scp)
{ {
if (size == 0)
return -1;
return (gint) gst_adapter_masked_scan_uint32_peek (adapter, return (gint) gst_adapter_masked_scan_uint32_peek (adapter,
0xffffff00, 0x00000100, ofs, size, scp); 0xffffff00, 0x00000100, ofs, size, scp);
} }