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aacparse: only require two frames in a row when we do not have sync

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This avoids a single bit error dropping two frames unnecessarily.
The two consecutive frames check is still required when we don't
have sync.

https://bugzilla.gnome.org/show_bug.cgi?id=657080
This commit is contained in:
Vincent Penquerc'h 2011-08-23 12:12:15 +01:00 committed by Sebastian Dröge
parent bd604175c5
commit f3fc3e1f69
1 changed files with 6 additions and 2 deletions
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8
gst/audioparsers/gstaacparse.c
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@ -340,8 +340,12 @@ gst_aac_parse_check_adts_frame (GstAacParse * aacparse,
if ((data[0] == 0xff) && ((data[1] & 0xf6) == 0xf0)) { if ((data[0] == 0xff) && ((data[1] & 0xf6) == 0xf0)) {
*framesize = gst_aac_parse_adts_get_frame_len (data); *framesize = gst_aac_parse_adts_get_frame_len (data);
/* In EOS mode this is enough. No need to examine the data further */ /* In EOS mode this is enough. No need to examine the data further.
if (drain) { We also relax the check when we have sync, on the assumption that
if we're not looking at random data, we have a much higher chance
to get the correct sync, and this avoids losing two frames when
a single bit corruption happens. */
if (drain || !GST_BASE_PARSE_LOST_SYNC (aacparse)) {
return TRUE; return TRUE;
} }