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codecparsers: mpeg2: fix video packet header size checks.

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Fix video packet header size checks for:
- Sequence Header: 64 bits ;
- Sequence Scalable Extension: 10 bits ;
- Slice Header: 6 bits.

https://bugzilla.gnome.org/show_bug.cgi?id=703668

Signed-off-by: Gwenole Beauchesne <gwenole.beauchesne@intel.com>
This commit is contained in:
Gwenole Beauchesne 2013-07-05 18:33:42 +02:00
parent daae2c6aa0
commit 5ad6f2d4a0
1 changed files with 3 additions and 3 deletions
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6
gst-libs/gst/codecparsers/gstmpegvideoparser.c
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@ -323,7 +323,7 @@ gst_mpeg_video_packet_parse_sequence_header (const GstMpegVideoPacket * packet,
g_return_val_if_fail (seqhdr != NULL, FALSE);
if (packet->size < 4)
if (packet->size < 8)
return FALSE;
gst_bit_reader_init (&br, &packet->data[packet->offset], packet->size);
@ -543,7 +543,7 @@ gboolean
g_return_val_if_fail (seqscaleext != NULL, FALSE);
if (packet->size < 5) {
if (packet->size < 2) {
GST_DEBUG ("not enough bytes to parse the extension");
return FALSE;
}
@ -962,7 +962,7 @@ gst_mpeg_video_packet_parse_slice_header (const GstMpegVideoPacket * packet,
g_return_val_if_fail (seqhdr != NULL, FALSE);
if (packet->size < 5)
if (packet->size < 1)
return FALSE;
gst_bit_reader_init (&br, &packet->data[packet->offset], packet->size);