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[MOVED FROM GST-P-FARSIGHT] Add handling of position query to liveadder

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20080704185721-3e2dc-7a687e346e74b44fa847c5e5b6eb64c3e0949764.gz
This commit is contained in:
Olivier Crete 2008-07-04 18:57:21 +00:00 committed by Edward Hervey
parent 9e6d4708f8
commit 28d1fc48a6
1 changed files with 73 additions and 27 deletions
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100
gst/liveadder/liveadder.c
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@ -585,34 +585,21 @@ newseg_wrong_format:
}
}
/* FIXME:
*
* When we add a new stream (or remove a stream) the duration might
* also become invalid again and we need to post a new DURATION
* message to notify this fact to the parent.
* For now we take the max of all the upstream elements so the simple
* cases work at least somewhat.
*/
static gboolean
gst_live_adder_query_duration (GstLiveAdder * adder, GstQuery * query)
gst_live_adder_query_pos_dur (GstLiveAdder * adder, GstFormat informat,
gboolean position, gint64 *outvalue)
{
gint64 max;
gboolean res;
GstFormat format;
gint64 max = G_MININT64;
gboolean res = TRUE;
GstIterator *it;
gboolean done;
gboolean done = FALSE;
/* parse format */
gst_query_parse_duration (query, &format, NULL);
max = -1;
res = TRUE;
done = FALSE;
it = gst_element_iterate_sink_pads (GST_ELEMENT_CAST (adder));
while (!done) {
GstIteratorResult ires;
gpointer item;
GstFormat format = informat;
ires = gst_iterator_next (it, &item);
switch (ires) {
@ -622,20 +609,29 @@ gst_live_adder_query_duration (GstLiveAdder * adder, GstQuery * query)
case GST_ITERATOR_OK:
{
GstPad *pad = GST_PAD_CAST (item);
gint64 duration;
gint64 value;
gboolean curres;
/* ask sink peer for duration */
res &= gst_pad_query_peer_duration (pad, &format, &duration);
if (position)
curres = gst_pad_query_peer_position (pad, &format, &value);
else
curres = gst_pad_query_peer_duration (pad, &format, &value);
/* take max from all valid return values */
if (res) {
/* Only if the format is the one we requested, otherwise ignore it ?
*/
if (curres && format == informat) {
res &= curres;
/* valid unknown length, stop searching */
if (duration == -1) {
max = duration;
if (value == -1) {
max = value;
done = TRUE;
} else if (value > max) {
max = value;
}
/* else see if bigger than current max */
else if (duration > max)
max = duration;
}
break;
}
@ -651,6 +647,32 @@ gst_live_adder_query_duration (GstLiveAdder * adder, GstQuery * query)
}
gst_iterator_free (it);
if (res)
*outvalue = max;
return res;
}
/* FIXME:
*
* When we add a new stream (or remove a stream) the duration might
* also become invalid again and we need to post a new DURATION
* message to notify this fact to the parent.
* For now we take the max of all the upstream elements so the simple
* cases work at least somewhat.
*/
static gboolean
gst_live_adder_query_duration (GstLiveAdder * adder, GstQuery * query)
{
GstFormat format;
gint64 max;
gboolean res;
/* parse format */
gst_query_parse_duration (query, &format, NULL);
res = gst_live_adder_query_pos_dur (adder, format, FALSE, &max);
if (res) {
/* and store the max */
gst_query_set_duration (query, format, max);
@ -659,6 +681,27 @@ gst_live_adder_query_duration (GstLiveAdder * adder, GstQuery * query)
return res;
}
static gboolean
gst_live_adder_query_position (GstLiveAdder * adder, GstQuery * query)
{
GstFormat format;
gint64 max;
gboolean res;
/* parse format */
gst_query_parse_position (query, &format, NULL);
res = gst_live_adder_query_pos_dur (adder, format, TRUE, &max);
if (res) {
/* and store the max */
gst_query_set_position (query, format, max);
}
return res;
}
static gboolean
gst_live_adder_query (GstPad * pad, GstQuery * query)
@ -744,6 +787,9 @@ gst_live_adder_query (GstPad * pad, GstQuery * query)
case GST_QUERY_DURATION:
res = gst_live_adder_query_duration (adder, query);
break;
case GST_QUERY_POSITION:
res = gst_live_adder_query_position (adder, query);
break;
default:
res = gst_pad_query_default (pad, query);
break;