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gst/playback/gstdecodebin2.c: When creating the groups, allow for a 5 second, unlimited buffers preroll phase after w...

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Original commit message from CVS:
* gst/playback/gstdecodebin2.c: (gst_decode_group_new),
(gst_decode_group_expose), (gst_decode_group_free), (add_fakesink):
When creating the groups, allow for a 5 second, unlimited buffers
preroll phase after which we expose the group.
When the group is exposed, use a small number of buffers up to a 2
second limit. Also disconnect the overrun signal from multiqueue when we
exposed the group because it is not needed anymore.
This commit is contained in:
Wim Taymans 2007-06-28 09:46:11 +00:00
parent 28ef3f5ddf
commit c198d8000c
2 changed files with 39 additions and 3 deletions
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10
ChangeLog
View file

@ -1,3 +1,13 @@
2007-06-28 Wim Taymans <wim@fluendo.com>
* gst/playback/gstdecodebin2.c: (gst_decode_group_new),
(gst_decode_group_expose), (gst_decode_group_free), (add_fakesink):
When creating the groups, allow for a 5 second, unlimited buffers
preroll phase after which we expose the group.
When the group is exposed, use a small number of buffers up to a 2
second limit. Also disconnect the overrun signal from multiqueue when we
exposed the group because it is not needed anymore.
2007-06-27 Tim-Philipp Müller <tim at centricular dot net>
* gst-libs/gst/tag/tags.c: (gst_tag_freeform_string_to_utf8):

28
gst/playback/gstdecodebin2.c
View file

@ -1457,11 +1457,18 @@ gst_decode_group_new (GstDecodeBin * dbin, gboolean use_queue)
group->endpads = NULL;
if (mq) {
/* we first configure the mulitqueue to buffer an unlimited number of
* buffers up to 5 seconds or, when no timestamps are present, up to 2 MB of
* memory. When this queue overruns, we assume the group is complete and can
* be exposed. */
g_object_set (G_OBJECT (mq),
"max-size-bytes", 2 * 1024 * 1024,
"max-size-time", 5 * GST_SECOND, "max-size-buffers", 0, NULL);
/* will expose the group */
group->overrunsig = g_signal_connect (G_OBJECT (mq), "overrun",
G_CALLBACK (multi_queue_overrun_cb), group);
/* will hide the group again, this is usually called when the multiqueue is
* drained because of EOS. */
group->underrunsig = g_signal_connect (G_OBJECT (mq), "underrun",
G_CALLBACK (multi_queue_underrun_cb), group);
@ -1740,7 +1747,6 @@ sort_end_pads (GstDecodePad * da, GstDecodePad * db)
*
* Not MT safe, please take the group lock
*/
static gboolean
gst_decode_group_expose (GstDecodeGroup * group)
{
@ -1771,6 +1777,21 @@ gst_decode_group_expose (GstDecodeGroup * group)
GST_LOG ("Exposing group %p", group);
if (group->multiqueue) {
/* update runtime limits. At runtime, we try to keep the amount of buffers
* in the queues as low as possible (but at least 5 buffers). */
g_object_set (G_OBJECT (group->multiqueue),
"max-size-bytes", 2 * 1024 * 1024,
"max-size-time", 2 * GST_SECOND, "max-size-buffers", 5, NULL);
/* we can now disconnect any overrun signal, which is used to expose the
* group. */
if (group->overrunsig) {
GST_LOG ("Disconnecting overrun");
g_signal_handler_disconnect (group->multiqueue, group->overrunsig);
group->overrunsig = 0;
}
}
/* re-order pads : video, then audio, then others */
group->endpads = g_list_sort (group->endpads, (GCompareFunc) sort_end_pads);
@ -1938,7 +1959,9 @@ gst_decode_group_free (GstDecodeGroup * group)
/* disconnect signal handlers on multiqueue */
if (group->multiqueue) {
if (group->underrunsig)
g_signal_handler_disconnect (group->multiqueue, group->underrunsig);
if (group->overrunsig)
g_signal_handler_disconnect (group->multiqueue, group->overrunsig);
deactivate_free_recursive (group, group->multiqueue);
}
@ -2065,6 +2088,9 @@ add_fakesink (GstDecodeBin * decode_bin)
if (!decode_bin->fakesink)
goto no_fakesink;
/* enable sync so that we force ASYNC preroll */
g_object_set (G_OBJECT (decode_bin->fakesink), "sync", TRUE, NULL);
/* hacky, remove sink flag, we don't want our decodebin to become a sink
* just because we add a fakesink element to make us ASYNC */
GST_OBJECT_FLAG_UNSET (decode_bin->fakesink, GST_ELEMENT_IS_SINK);