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h264parse: fix and tweak frame timestamping

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... to run with properly init'ed variables, and to only perform interpolation
in safe cases.
This commit is contained in:
Mark Nauwelaerts 2012-01-04 10:56:51 +01:00
parent 9d0c7d054e
commit c4abaf1428
2 changed files with 29 additions and 3 deletions
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31
gst/videoparsers/gsth264parse.c
View file

@ -215,6 +215,10 @@ gst_h264_parse_reset (GstH264Parse * h264parse)
h264parse->have_pps = FALSE;
h264parse->have_sps = FALSE;
h264parse->dts = GST_CLOCK_TIME_NONE;
h264parse->ts_trn_nb = GST_CLOCK_TIME_NONE;
h264parse->do_ts = TRUE;
h264parse->pending_key_unit_ts = GST_CLOCK_TIME_NONE;
h264parse->force_key_unit_event = NULL;
@ -1238,9 +1242,12 @@ gst_h264_parse_parse_frame (GstBaseParse * parse, GstBaseParseFrame * frame)
gst_h264_parse_update_src_caps (h264parse, NULL);
gst_h264_parse_get_timestamp (h264parse,
&GST_BUFFER_TIMESTAMP (buffer), &GST_BUFFER_DURATION (buffer),
h264parse->frame_start);
/* don't mess with timestamps if provided by upstream,
* particularly since our ts not that good they handle seeking etc */
if (h264parse->do_ts)
gst_h264_parse_get_timestamp (h264parse,
&GST_BUFFER_TIMESTAMP (buffer), &GST_BUFFER_DURATION (buffer),
h264parse->frame_start);
if (h264parse->keyframe)
GST_BUFFER_FLAG_UNSET (buffer, GST_BUFFER_FLAG_DELTA_UNIT);
@ -1728,6 +1735,24 @@ gst_h264_parse_event (GstBaseParse * parse, GstEvent * event)
gst_event_replace (&h264parse->force_key_unit_event, event);
break;
}
case GST_EVENT_FLUSH_STOP:
h264parse->dts = GST_CLOCK_TIME_NONE;
h264parse->ts_trn_nb = GST_CLOCK_TIME_NONE;
break;
case GST_EVENT_NEWSEGMENT:
{
gdouble rate, applied_rate;
GstFormat format;
gint64 start;
gst_event_parse_new_segment_full (event, NULL, &rate, &applied_rate,
&format, &start, NULL, NULL);
/* don't try to mess with more subtle cases (e.g. seek) */
if (format == GST_FORMAT_TIME &&
(start != 0 || rate != 1.0 || applied_rate != 1.0))
h264parse->do_ts = FALSE;
break;
}
default:
break;
}

1
gst/videoparsers/gsth264parse.h
View file

@ -92,6 +92,7 @@ struct _GstH264Parse
GstClockTime dts;
/* dts at start of last buffering period */
GstClockTime ts_trn_nb;
gboolean do_ts;
/* frame parsing */
/*guint last_nal_pos;*/