mirrors/gstreamer
mirrors/gstreamer
1
1
Fork 0
mirror of https://gitlab.freedesktop.org/gstreamer/gstreamer.git synced 2024-10-05 02:02:26 +00:00
Code Issues 1 Projects Releases Wiki Activity

gst/mpegdemux/gstmpegtsdemux.c: Heuristic approach when resyncing.

Browse source 
Original commit message from CVS:
patch by: Josep Torra
* gst/mpegdemux/gstmpegtsdemux.c:
Heuristic approach when resyncing.
This commit is contained in:
Zaheer Abbas Merali 2008-11-05 18:52:38 +00:00
parent a65390d31a
commit cf69768bfb
2 changed files with 36 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

7
ChangeLog
View file

@ -1,3 +1,10 @@
2008-11-05 Zaheer Abbas Merali <zaheerabbas at merali dot org>
patch by: Josep Torra
* gst/mpegdemux/gstmpegtsdemux.c:
Heuristic approach when resyncing.
2008-11-05 Zaheer Abbas Merali <zaheerabbas at merali dot org>
patch by: Sebastian Pölsterl

30
gst/mpegdemux/gstmpegtsdemux.c
View file

@ -2458,6 +2458,33 @@ gst_fluts_demux_src_pad_query (GstPad * pad, GstQuery * query)
}
#endif
static FORCE_INLINE gint
is_mpegts_sync (const guint8 * in_data, const guint8 * end_data,
guint packetsize)
{
guint ret = 0;
if (G_LIKELY (IS_MPEGTS_SYNC (in_data)))
return 100;
if (in_data + packetsize < end_data - 5) {
if (G_LIKELY (IS_MPEGTS_SYNC (in_data + packetsize)))
ret += 50;
}
if (in_data[0] == 0x47) {
ret += 25;
if ((in_data[1] & 0x80) == 0x00)
ret += 10;
if ((in_data[3] & 0x10) == 0x10)
ret += 5;
}
return ret;
}
static FORCE_INLINE guint
gst_fluts_demux_sync_scan (GstFluTSDemux * demux, const guint8 * in_data,
guint size, guint * flush)
@ -2468,7 +2495,8 @@ gst_fluts_demux_sync_scan (GstFluTSDemux * demux, const guint8 * in_data,
while (ptr_data <= end_scan && sync_count < LENGHT_SYNC_LUT) {
/* if sync code is found try to store it in the LUT */
if (G_LIKELY (IS_MPEGTS_SYNC (ptr_data))) {
guint chance = is_mpegts_sync (ptr_data, end_scan, demux->packetsize);
if (G_LIKELY (chance > 50)) {
/* skip paketsize bytes and try find next */
guint8 *next_sync = ptr_data + demux->packetsize;
if (next_sync < end_scan) {