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outputselector: implement pad_alloc on active pad.

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This commit is contained in:
Stefan Kost 2009-05-28 10:12:58 +03:00
parent 4d5a48db97
commit addb247436
2 changed files with 40 additions and 6 deletions
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45
gst/selector/gstoutputselector.c
View file

@ -19,7 +19,7 @@
/**
* SECTION:element-output-selector
* @see_also: #GstTee, #GstInputSelector
* @see_also: #GstOutputSelector, #GstInputSelector
*
* Direct input stream to one out of N output pads.
*/
@ -74,6 +74,8 @@ static GstPad *gst_output_selector_request_new_pad (GstElement * element,
static void gst_output_selector_release_pad (GstElement * element,
GstPad * pad);
static GstFlowReturn gst_output_selector_chain (GstPad * pad, GstBuffer * buf);
static GstFlowReturn gst_output_selector_buffer_alloc (GstPad * pad,
guint64 offset, guint size, GstCaps * caps, GstBuffer ** buf);
static GstStateChangeReturn gst_output_selector_change_state (GstElement *
element, GstStateChange transition);
static gboolean gst_output_selector_handle_sink_event (GstPad * pad,
@ -136,17 +138,17 @@ gst_output_selector_init (GstOutputSelector * sel,
GST_DEBUG_FUNCPTR (gst_output_selector_chain));
gst_pad_set_event_function (sel->sinkpad,
GST_DEBUG_FUNCPTR (gst_output_selector_handle_sink_event));
gst_element_add_pad (GST_ELEMENT (sel), sel->sinkpad);
gst_pad_set_bufferalloc_function (sel->sinkpad,
GST_DEBUG_FUNCPTR (gst_output_selector_buffer_alloc));
/*
gst_pad_set_bufferalloc_function (sel->sinkpad,
GST_DEBUG_FUNCPTR (gst_output_selector_bufferalloc));
gst_pad_set_setcaps_function (sel->sinkpad,
GST_DEBUG_FUNCPTR (gst_pad_proxy_setcaps));
gst_pad_set_getcaps_function (sel->sinkpad,
GST_DEBUG_FUNCPTR (gst_pad_proxy_getcaps));
*/
gst_element_add_pad (GST_ELEMENT (sel), sel->sinkpad);
/* srcpad management */
sel->active_srcpad = NULL;
sel->nb_srcpads = 0;
@ -251,6 +253,37 @@ gst_output_selector_get_property (GObject * object, guint prop_id,
}
}
static GstFlowReturn
gst_output_selector_buffer_alloc (GstPad * pad, guint64 offset, guint size,
GstCaps * caps, GstBuffer ** buf)
{
GstOutputSelector *sel;
GstFlowReturn res;
GstPad *allocpad;
sel = GST_OUTPUT_SELECTOR (GST_PAD_PARENT (pad));
res = GST_FLOW_NOT_LINKED;
GST_OBJECT_LOCK (sel);
if ((allocpad = sel->active_srcpad)) {
/* if we had a previous pad we used for allocating a buffer, continue using
* it. */
GST_DEBUG_OBJECT (sel, "using pad %s:%s for alloc",
GST_DEBUG_PAD_NAME (allocpad));
gst_object_ref (allocpad);
GST_OBJECT_UNLOCK (sel);
res = gst_pad_alloc_buffer (allocpad, offset, size, caps, buf);
gst_object_unref (allocpad);
GST_OBJECT_LOCK (sel);
}
GST_OBJECT_UNLOCK (sel);
return res;
}
static GstPad *
gst_output_selector_request_new_pad (GstElement * element,
GstPadTemplate * templ, const gchar * name)

1
gst/selector/gstoutputselector.h
View file

@ -42,6 +42,7 @@ struct _GstOutputSelector {
GstElement element;
GstPad *sinkpad;
GstPad *allocpad;
GstPad *active_srcpad;
GstPad *pending_srcpad;