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pipeline: Properly error out when linking fails

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In the rendering case we were getting random issues and often the
pipeline was not be able to preroll as some pad were not linked inside
encodebin.

https://bugzilla.gnome.org/show_bug.cgi?id=795422
This commit is contained in:
Thibault Saunier 2018-04-20 18:45:19 -03:00
parent 835d693749
commit 3be03c13c1
1 changed files with 70 additions and 16 deletions
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86
ges/ges-pipeline.c
View file

@ -43,6 +43,7 @@ GST_DEBUG_CATEGORY_STATIC (ges_pipeline_debug);
#define GST_CAT_DEFAULT ges_pipeline_debug
#define DEFAULT_TIMELINE_MODE GES_PIPELINE_MODE_PREVIEW
#define IN_RENDERING_MODE(timeline) ((timeline->priv->mode) & (GES_PIPELINE_MODE_RENDER | GES_PIPELINE_MODE_SMART_RENDER))
/* Structure corresponding to a timeline - sink link */
@ -520,6 +521,56 @@ _link_tracks (GESPipeline * pipeline)
for (tmp = pipeline->priv->timeline->tracks; tmp; tmp = tmp->next)
_link_track (pipeline, tmp->data);
if (IN_RENDERING_MODE (pipeline)) {
GString *unlinked_issues = NULL;
GstIterator *pads;
gboolean done = FALSE;
GValue paditem = { 0, };
pads = gst_element_iterate_sink_pads (pipeline->priv->encodebin);
while (!done) {
switch (gst_iterator_next (pads, &paditem)) {
case GST_ITERATOR_OK:
{
GstPad *testpad = g_value_get_object (&paditem);
if (!gst_pad_is_linked (testpad)) {
GstCaps *sinkcaps = gst_pad_query_caps (testpad, NULL);
gchar *caps_string = gst_caps_to_string (sinkcaps);
gchar *path_string =
gst_object_get_path_string (GST_OBJECT (testpad));
gst_caps_unref (sinkcaps);
if (!unlinked_issues)
unlinked_issues =
g_string_new ("Following encodebin pads are not linked:\n");
g_string_append_printf (unlinked_issues, " - %s: %s", path_string,
caps_string);
g_free (caps_string);
g_free (path_string);
}
g_value_reset (&paditem);
}
break;
case GST_ITERATOR_DONE:
case GST_ITERATOR_ERROR:
done = TRUE;
break;
case GST_ITERATOR_RESYNC:
gst_iterator_resync (pads);
break;
}
}
g_value_reset (&paditem);
gst_iterator_free (pads);
if (unlinked_issues) {
GST_ELEMENT_ERROR (pipeline, STREAM, FAILED, (NULL), ("%s",
unlinked_issues->str));
g_string_free (unlinked_issues, TRUE);
}
}
}
static void
@ -554,8 +605,7 @@ ges_pipeline_change_state (GstElement * element, GstStateChange transition)
ret = GST_STATE_CHANGE_FAILURE;
goto done;
}
if (self->priv->mode & (GES_PIPELINE_MODE_RENDER |
GES_PIPELINE_MODE_SMART_RENDER)) {
if (IN_RENDERING_MODE (self)) {
GST_DEBUG ("rendering => Updating pipeline caps");
/* Set caps on all tracks according to profile if present */
if (!ges_pipeline_update_caps (self)) {
@ -728,8 +778,10 @@ _link_track (GESPipeline * self, GESTrack * track)
gst_caps_unref (caps);
if (G_UNLIKELY (!track)) {
GST_WARNING_OBJECT (self, "Couldn't find coresponding track !");
if (G_UNLIKELY (!pad)) {
GST_ELEMENT_ERROR (self, STREAM, FAILED, (NULL),
("Trying to link %" GST_PTR_FORMAT
" but no pad is exposed for it.", track));
return;
}
@ -774,7 +826,8 @@ _link_track (GESPipeline * self, GESTrack * track)
sinkpad = gst_element_get_static_pad (chain->tee, "sink");
lret = gst_pad_link (pad, sinkpad);
if (lret != GST_PAD_LINK_OK) {
GST_ERROR_OBJECT (self, "Could not link the tee (%i)", lret);
GST_ELEMENT_ERROR (self, CORE, NEGOTIATION,
(NULL), ("Could not link the tee (%s)", gst_pad_link_get_name (lret)));
goto error;
}
@ -807,15 +860,19 @@ _link_track (GESPipeline * self, GESTrack * track)
if (G_UNLIKELY (!(sinkpad =
gst_element_get_request_pad (self->priv->playsink,
sinkpad_name)))) {
GST_ERROR_OBJECT (self, "Couldn't get a pad from the playsink !");
GST_ELEMENT_ERROR (self, CORE, NEGOTIATION,
(NULL), ("Could not get a pad from playsink for %s", sinkpad_name));
goto error;
}
tmppad = gst_element_get_request_pad (chain->tee, "src_%u");
if (G_UNLIKELY (gst_pad_link_full (tmppad, sinkpad,
GST_PAD_LINK_CHECK_NOTHING) != GST_PAD_LINK_OK)) {
GST_ERROR_OBJECT (self, "Couldn't link track pad to encodebin");
lret = gst_pad_link_full (tmppad, sinkpad, GST_PAD_LINK_CHECK_NOTHING);
if (G_UNLIKELY (lret != GST_PAD_LINK_OK)) {
gst_object_unref (tmppad);
GST_ELEMENT_ERROR (self, CORE, NEGOTIATION,
(NULL),
("Could not link %" GST_PTR_FORMAT " and %" GST_PTR_FORMAT " (%s)",
tmppad, sinkpad, gst_pad_link_get_name (lret)));
goto error;
}
gst_object_unref (tmppad);
@ -831,9 +888,7 @@ _link_track (GESPipeline * self, GESTrack * track)
}
/* Connect to encodebin */
if (self->
priv->mode & (GES_PIPELINE_MODE_RENDER | GES_PIPELINE_MODE_SMART_RENDER))
{
if (IN_RENDERING_MODE (self)) {
GstPad *tmppad;
GST_DEBUG_OBJECT (self, "Connecting to encodebin");
@ -849,15 +904,14 @@ _link_track (GESPipeline * self, GESTrack * track)
&sinkpad);
if (G_UNLIKELY (sinkpad == NULL)) {
GST_INFO_OBJECT (self, "Couldn't get a pad from encodebin for: %"
GST_PTR_FORMAT, caps);
gst_caps_unref (caps);
gst_element_set_locked_state (GST_ELEMENT (track), TRUE);
self->priv->not_rendered_tracks =
g_list_append (self->priv->not_rendered_tracks, track);
GST_INFO_OBJECT (self,
"Couldn't get a pad from encodebin for: %" GST_PTR_FORMAT, caps);
gst_caps_unref (caps);
goto error;
}