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Emit connection-failed signal if gst_pad_alloc_buffer fails.

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Buffer allocation might fail for requested format.
We need to emit connection-failed signal
and allow backend to insert colorspace transformation element.

Change-Id: I9a101bb3c027f150c68bbeaba8ab932deded47ea
Reviewed-by: Dmytro Poplavskiy <dmytro.poplavskiy@nokia.com>
Reviewed-by: Michael Goddard <michael.goddard@nokia.com>
This commit is contained in:
Lev Zelenskiy
2012-04-17 14:44:49 +10:00
committed by Qt by Nokia
parent 3998106d93
commit 1a71385d6a
1 changed files with 47 additions and 35 deletions
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82
src/plugins/gstreamer/gstvideoconnector.c
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@@ -200,47 +200,59 @@ gst_video_connector_buffer_alloc (GstPad * pad, guint64 offset, guint size,
return GST_FLOW_ERROR;
*buf = NULL;
GST_OBJECT_LOCK (element);
gst_object_ref(element->srcpad);
GST_OBJECT_UNLOCK (element);
gboolean isFailed = FALSE;
while (1) {
GST_OBJECT_LOCK (element);
gst_object_ref(element->srcpad);
GST_OBJECT_UNLOCK (element);
// Check if downstream element is in NULL state
// and wait for up to 1 second for it to switch.
GstPad *peerPad = gst_pad_get_peer(element->srcpad);
if (peerPad) {
GstElement *parent = gst_pad_get_parent_element(peerPad);
gst_object_unref (peerPad);
if (parent) {
GstState state;
GstState pending;
int totalTimeout = 0;
// This seems to sleep for about 10ms usually.
while (totalTimeout < 1000000) {
gst_element_get_state(parent, &state, &pending, 0);
if (state != GST_STATE_NULL)
break;
usleep(5000);
totalTimeout += 5000;
}
// Check if downstream element is in NULL state
// and wait for up to 1 second for it to switch.
GstPad *peerPad = gst_pad_get_peer(element->srcpad);
if (peerPad) {
GstElement *parent = gst_pad_get_parent_element(peerPad);
gst_object_unref (peerPad);
if (parent) {
GstState state;
GstState pending;
int totalTimeout = 0;
// This seems to sleep for about 10ms usually.
while (totalTimeout < 1000000) {
gst_element_get_state(parent, &state, &pending, 0);
if (state != GST_STATE_NULL)
break;
usleep(5000);
totalTimeout += 5000;
}
gst_object_unref (parent);
if (state == GST_STATE_NULL) {
GST_DEBUG_OBJECT (element, "Downstream element is in NULL state");
// Downstream filter seems to be in the wrong state
return GST_FLOW_UNEXPECTED;
gst_object_unref (parent);
if (state == GST_STATE_NULL) {
GST_DEBUG_OBJECT (element, "Downstream element is in NULL state");
// Downstream filter seems to be in the wrong state
return GST_FLOW_UNEXPECTED;
}
}
}
}
res = gst_pad_alloc_buffer(element->srcpad, offset, size, caps, buf);
gst_object_unref (element->srcpad);
res = gst_pad_alloc_buffer(element->srcpad, offset, size, caps, buf);
gst_object_unref (element->srcpad);
GST_DEBUG_OBJECT (element, "buffer alloc finished: %s", gst_flow_get_name (res));
GST_DEBUG_OBJECT (element, "buffer alloc finished: %s", gst_flow_get_name (res));
if (res == GST_FLOW_WRONG_STATE) {
// Just in case downstream filter is still somehow in the wrong state.
// Pipeline stalls if we report GST_FLOW_WRONG_STATE.
return GST_FLOW_UNEXPECTED;
if (res == GST_FLOW_WRONG_STATE) {
// Just in case downstream filter is still somehow in the wrong state.
// Pipeline stalls if we report GST_FLOW_WRONG_STATE.
return GST_FLOW_UNEXPECTED;
}
if (res >= GST_FLOW_OK || isFailed == TRUE)
break;
//if gst_pad_alloc_buffer failed, emit "connection-failed" signal
//so colorspace transformation element can be inserted
GST_INFO_OBJECT(element, "gst_video_connector_buffer_alloc failed, emit connection-failed signal");
g_signal_emit(G_OBJECT(element), gst_video_connector_signals[SIGNAL_CONNECTION_FAILED], 0);
isFailed = TRUE;
}
return res;
@@ -259,7 +271,7 @@ gst_video_connector_setcaps (GstPad *pad, GstCaps *caps)
if (!res) {
//if set_caps failed, emit "connection-failed" signal
//so colorspace transformation elemnt can be inserted
//so colorspace transformation element can be inserted
GST_INFO_OBJECT(element, "gst_video_connector_setcaps failed, emit connection-failed signal");
g_signal_emit(G_OBJECT(element), gst_video_connector_signals[SIGNAL_CONNECTION_FAILED], 0);