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gst/playback/gstdecodebin2.c: Handle dynamic pads within groups.

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Original commit message from CVS:
* gst/playback/gstdecodebin2.c: (connect_element),
(pad_added_group_cb), (gst_decode_group_check_if_blocked),
(sort_end_pads), (gst_decode_group_expose):
Handle dynamic pads within groups.
Sort pads before exposing them in order to make playbin happy.
There still is a race with the multiqueue filling up. This should be
solved separately.
Fixes #398721
This commit is contained in:
Edward Hervey 2007-02-20 11:20:52 +00:00
parent b99629643c
commit 7746c2f176
2 changed files with 110 additions and 4 deletions
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11
ChangeLog
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@ -1,3 +1,14 @@
2007-02-20 Edward Hervey <edward@fluendo.com>
* gst/playback/gstdecodebin2.c: (connect_element),
(pad_added_group_cb), (gst_decode_group_check_if_blocked),
(sort_end_pads), (gst_decode_group_expose):
Handle dynamic pads within groups.
Sort pads before exposing them in order to make playbin happy.
There still is a race with the multiqueue filling up. This should be
solved separately.
Fixes #398721
2007-02-16 Tim-Philipp Müller <tim at centricular dot net>
* gst-libs/gst/utils/base-utils.c:

103
gst/playback/gstdecodebin2.c
View file

@ -178,6 +178,7 @@ struct _GstDecodeGroup
* on this group */
gulong overrunsig;
gulong underrunsig;
guint nbdynamic; /* number of dynamic pads in the group. */
GList *endpads; /* List of GstDecodePad of source pads to be exposed */
GList *ghosts; /* List of GstGhostPad for the endpads */
@ -922,6 +923,12 @@ connect_element (GstDecodeBin * dbin, GstElement * element,
/* 2. if there are more potential pads, connect to relevent signals */
if (dynamic) {
if (group) {
GST_LOG ("Adding signals to element %s in group %p",
GST_ELEMENT_NAME (element), group);
GROUP_MUTEX_LOCK (group);
group->nbdynamic++;
GST_LOG ("Group %p has now %d dynamic elements", group, group->nbdynamic);
GROUP_MUTEX_UNLOCK (group);
g_signal_connect (G_OBJECT (element), "pad-added",
G_CALLBACK (pad_added_group_cb), group);
g_signal_connect (G_OBJECT (element), "pad-removed",
@ -1027,9 +1034,29 @@ type_found (GstElement * typefind, guint probability,
static void
pad_added_group_cb (GstElement * element, GstPad * pad, GstDecodeGroup * group)
{
GstCaps *caps;
gboolean expose = FALSE;
GST_LOG_OBJECT (pad, "pad added, group:%p", group);
/* FIXME : FILLME */
caps = gst_pad_get_caps (pad);
analyze_new_pad (group->dbin, element, pad, caps, group);
if (caps)
gst_caps_unref (caps);
GROUP_MUTEX_LOCK (group);
group->nbdynamic--;
GST_LOG ("Group %p has now %d dynamic objects", group, group->nbdynamic);
if (group->nbdynamic == 0)
expose = TRUE;
GROUP_MUTEX_UNLOCK (group);
if (expose) {
GST_LOG
("That was the last dynamic object, now attempting to expose the group");
DECODE_BIN_LOCK (group->dbin);
gst_decode_group_expose (group);
DECODE_BIN_UNLOCK (group->dbin);
}
}
static void
@ -1419,7 +1446,7 @@ gst_decode_group_control_source_pad (GstDecodeGroup * group, GstPad * pad)
* If the group is complete and blocked, the group will be marked as blocked
* and will ghost/expose all pads on decodebin if the group is the current one.
*
* MT safe
* Call with the group lock taken ! MT safe
*/
static void
gst_decode_group_check_if_blocked (GstDecodeGroup * group)
@ -1427,10 +1454,11 @@ gst_decode_group_check_if_blocked (GstDecodeGroup * group)
GList *tmp;
gboolean blocked = TRUE;
GST_LOG ("group : %p", group);
GST_LOG ("group : %p , ->complete:%d , ->nbdynamic:%d",
group, group->complete, group->nbdynamic);
/* 1. don't do anything if group is not complete */
if (!group->complete) {
if (!group->complete || group->nbdynamic) {
GST_DEBUG_OBJECT (group->dbin, "Group isn't complete yet");
return;
}
@ -1497,6 +1525,64 @@ gst_decode_group_check_if_drained (GstDecodeGroup * group)
DECODE_BIN_UNLOCK (dbin);
}
/* sort_end_pads:
* GCompareFunc to use with lists of GstPad.
* Sorts pads by mime type.
* First video (raw, then non-raw), then audio (raw, then non-raw),
* then others.
*
* Return: negative if a<b, 0 if a==b, positive if a>b
*/
static gint
sort_end_pads (GstDecodePad * da, GstDecodePad * db)
{
GstPad *a, *b;
gint va, vb;
GstCaps *capsa, *capsb;
GstStructure *sa, *sb;
const gchar *namea, *nameb;
a = da->pad;
b = db->pad;
capsa = gst_pad_get_caps (a);
capsb = gst_pad_get_caps (b);
sa = gst_caps_get_structure ((const GstCaps *) capsa, 0);
sb = gst_caps_get_structure ((const GstCaps *) capsb, 0);
namea = gst_structure_get_name (sa);
nameb = gst_structure_get_name (sb);
if (g_strrstr (namea, "video/x-raw-"))
va = 0;
else if (g_strrstr (namea, "video/"))
va = 1;
else if (g_strrstr (namea, "audio/x-raw"))
va = 2;
else if (g_strrstr (namea, "audio/"))
va = 3;
else
va = 4;
if (g_strrstr (nameb, "video/x-raw-"))
vb = 0;
else if (g_strrstr (nameb, "video/"))
vb = 1;
else if (g_strrstr (nameb, "audio/x-raw"))
vb = 2;
else if (g_strrstr (nameb, "audio/"))
vb = 3;
else
vb = 4;
gst_caps_unref (capsa);
gst_caps_unref (capsb);
return va - vb;
}
/* gst_decode_group_expose:
*
* Expose this group's pads.
@ -1526,8 +1612,17 @@ gst_decode_group_expose (GstDecodeGroup * group)
return FALSE;
}
if (group->nbdynamic) {
GST_WARNING ("Group %p still has %d dynamic objects, not exposing yet",
group, group->nbdynamic);
return FALSE;
}
GST_LOG ("Exposing group %p", group);
/* re-order pads : video, then audio, then others */
group->endpads = g_list_sort (group->endpads, (GCompareFunc) sort_end_pads);
/* Expose pads */
for (tmp = group->endpads; tmp; tmp = next) {