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gst/mpegdemux/gstmpegdemux.c: Use the adjusted SCR for calculating the mux rate.

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Original commit message from CVS:
* gst/mpegdemux/gstmpegdemux.c: (gst_flups_demux_src_query),
(gst_flups_demux_parse_pack_start):
Use the adjusted SCR for calculating the mux rate.
Don't update the rate estimation after a discont.
This commit is contained in:
Wim Taymans 2008-12-29 18:22:26 +00:00
parent 32a2faa550
commit 679c4b992c
2 changed files with 25 additions and 6 deletions
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7
ChangeLog
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@ -1,3 +1,10 @@
2008-12-29 Wim Taymans <wim.taymans@collabora.co.uk>
* gst/mpegdemux/gstmpegdemux.c: (gst_flups_demux_src_query),
(gst_flups_demux_parse_pack_start):
Use the adjusted SCR for calculating the mux rate.
Don't update the rate estimation after a discont.
2008-12-29 Wim Taymans <wim.taymans@collabora.co.uk>
* gst/mpegdemux/gstmpegdemux.c: (gst_flups_demux_send_data):

24
gst/mpegdemux/gstmpegdemux.c
View file

@ -960,8 +960,14 @@ gst_flups_demux_src_query (GstPad * pad, GstQuery * query)
gst_query_parse_duration (query, &format, &duration);
GST_LOG_OBJECT (demux,
"query on peer pad reported bytes %" G_GUINT64_FORMAT, duration);
duration = BYTES_TO_GSTTIME (duration);
GST_LOG_OBJECT (demux, "converted to time %" GST_TIME_FORMAT,
GST_TIME_ARGS (duration));
gst_query_set_duration (query, GST_FORMAT_TIME, duration);
res = TRUE;
break;
@ -1013,6 +1019,8 @@ gst_flups_demux_parse_pack_start (GstFluPSDemux * demux)
guint length;
guint32 scr1, scr2;
guint64 scr, scr_adjusted, new_rate;
guint64 scr_rate_n;
guint64 scr_rate_d;
GST_DEBUG ("parsing pack start");
@ -1126,12 +1134,12 @@ gst_flups_demux_parse_pack_start (GstFluPSDemux * demux)
demux->first_scr_offset = demux->last_scr_offset;
demux->base_time = MPEGTIME_TO_GSTTIME (demux->first_scr);
/* at begin consider the new_rate as the scr rate, bytes/clock ticks */
demux->scr_rate_n = new_rate;
demux->scr_rate_d = CLOCK_FREQ;
scr_rate_n = new_rate;
scr_rate_d = CLOCK_FREQ;
} else if (demux->first_scr_offset != demux->last_scr_offset) {
/* estimate byte rate related to the SCR */
demux->scr_rate_n = demux->last_scr_offset - demux->first_scr_offset;
demux->scr_rate_d = scr - demux->first_scr;
scr_rate_n = demux->last_scr_offset - demux->first_scr_offset;
scr_rate_d = scr_adjusted - demux->first_scr;
}
GST_DEBUG_OBJECT (demux, "%s mode scr: %" G_GUINT64_FORMAT " at %"
@ -1141,8 +1149,7 @@ gst_flups_demux_parse_pack_start (GstFluPSDemux * demux)
((demux->sink_segment.rate >= 0.0) ? "forward" : "backward"),
scr, demux->last_scr_offset,
demux->first_scr, demux->first_scr_offset,
demux->scr_rate_n, demux->scr_rate_d,
(float) demux->scr_rate_n / demux->scr_rate_d);
scr_rate_n, scr_rate_d, (float) scr_rate_n / scr_rate_d);
/* adjustment of the SCR */
if (demux->current_scr != G_MAXUINT64) {
@ -1188,6 +1195,9 @@ gst_flups_demux_parse_pack_start (GstFluPSDemux * demux)
GST_DEBUG_OBJECT (demux, "discont found, diff: %" G_GINT64_FORMAT
", adjust %" G_GINT64_FORMAT, diff, demux->scr_adjust);
scr_adjusted = demux->next_scr;
/* don't update rate estimation on disconts */
scr_rate_n = demux->scr_rate_n;
scr_rate_d = demux->scr_rate_d;
} else {
demux->next_scr = scr_adjusted;
}
@ -1196,6 +1206,8 @@ gst_flups_demux_parse_pack_start (GstFluPSDemux * demux)
/* update the current_scr and rate members */
demux->mux_rate = new_rate;
demux->current_scr = scr_adjusted;
demux->scr_rate_n = scr_rate_n;
demux->scr_rate_d = scr_rate_d;
/* Reset the bytes_since_scr value to count the data remaining in the
* adapter */