--- /dev/null
+/* GStreamer
+ * Copyright (C) 2003 Julien Moutte <julien@moutte.net>
+ * Copyright (C) 2005 Ronald S. Bultje <rbultje@ronald.bitfreak.net>
+ * Copyright (C) 2005 Jan Schmidt <thaytan@mad.scientist.com>
+ * Copyright (C) 2007 Wim Taymans <wim.taymans@gmail.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <string.h>
+
+#include "gststreamselector.h"
+
+GST_DEBUG_CATEGORY_STATIC (stream_selector_debug);
+#define GST_CAT_DEFAULT stream_selector_debug
+
+static GstStaticPadTemplate gst_stream_selector_sink_factory =
+GST_STATIC_PAD_TEMPLATE ("sink%d",
+ GST_PAD_SINK,
+ GST_PAD_REQUEST,
+ GST_STATIC_CAPS_ANY);
+
+static GstStaticPadTemplate gst_stream_selector_src_factory =
+GST_STATIC_PAD_TEMPLATE ("src",
+ GST_PAD_SRC,
+ GST_PAD_ALWAYS,
+ GST_STATIC_CAPS_ANY);
+
+enum
+{
+ PROP_0,
+ PROP_N_PADS,
+ PROP_ACTIVE_PAD,
+ PROP_LAST
+};
+
+static gboolean gst_stream_selector_is_active_sinkpad (GstStreamSelector * sel,
+ GstPad * pad);
+static GstPad *gst_stream_selector_activate_sinkpad (GstStreamSelector * sel,
+ GstPad * pad);
+static GstPad *gst_stream_selector_get_linked_pad (GstPad * pad,
+ gboolean strict);
+
+#define GST_TYPE_SELECTOR_PAD \
+ (gst_selector_pad_get_type())
+#define GST_SELECTOR_PAD(obj) \
+ (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_SELECTOR_PAD, GstSelectorPad))
+#define GST_SELECTOR_PAD_CLASS(klass) \
+ (G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_SELECTOR_PAD, GstSelectorPadClass))
+#define GST_IS_SELECTOR_PAD(obj) \
+ (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_SELECTOR_PAD))
+#define GST_IS_SELECTOR_PAD_CLASS(klass) \
+ (G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_SELECTOR_PAD))
+#define GST_SELECTOR_PAD_CAST(obj) \
+ ((GstSelectorPad *)(obj))
+
+typedef struct _GstSelectorPad GstSelectorPad;
+typedef struct _GstSelectorPadClass GstSelectorPadClass;
+
+struct _GstSelectorPad
+{
+ GstPad parent;
+
+ gboolean active;
+ gboolean eos;
+ gboolean segment_pending;
+ GstSegment segment;
+ GstTagList *tags;
+};
+
+struct _GstSelectorPadClass
+{
+ GstPadClass parent;
+};
+
+static void gst_selector_pad_class_init (GstSelectorPadClass * klass);
+static void gst_selector_pad_init (GstSelectorPad * pad);
+static void gst_selector_pad_finalize (GObject * object);
+
+static void gst_selector_pad_get_property (GObject * object,
+ guint prop_id, GValue * value, GParamSpec * pspec);
+
+static GstPadClass *selector_pad_parent_class = NULL;
+
+static void gst_selector_pad_reset (GstSelectorPad * pad);
+static gboolean gst_selector_pad_event (GstPad * pad, GstEvent * event);
+static GstCaps *gst_selector_pad_getcaps (GstPad * pad);
+static GstFlowReturn gst_selector_pad_chain (GstPad * pad, GstBuffer * buf);
+static GstFlowReturn gst_selector_pad_bufferalloc (GstPad * pad,
+ guint64 offset, guint size, GstCaps * caps, GstBuffer ** buf);
+
+enum
+{
+ PROP_PAD_0,
+ PROP_PAD_TAGS,
+ PROP_PAD_ACTIVE,
+ PROP_PAD_LAST
+};
+
+static GType
+gst_selector_pad_get_type (void)
+{
+ static GType selector_pad_type = 0;
+
+ if (!selector_pad_type) {
+ static const GTypeInfo selector_pad_info = {
+ sizeof (GstSelectorPadClass),
+ NULL,
+ NULL,
+ (GClassInitFunc) gst_selector_pad_class_init,
+ NULL,
+ NULL,
+ sizeof (GstSelectorPad),
+ 0,
+ (GInstanceInitFunc) gst_selector_pad_init,
+ };
+
+ selector_pad_type =
+ g_type_register_static (GST_TYPE_PAD, "GstPlaybinSelectorPad",
+ &selector_pad_info, 0);
+ }
+ return selector_pad_type;
+}
+
+static void
+gst_selector_pad_class_init (GstSelectorPadClass * klass)
+{
+ GObjectClass *gobject_class;
+
+ gobject_class = (GObjectClass *) klass;
+
+ selector_pad_parent_class = g_type_class_peek_parent (klass);
+
+ gobject_class->finalize = gst_selector_pad_finalize;
+ gobject_class->get_property = gst_selector_pad_get_property;
+
+ g_object_class_install_property (gobject_class, PROP_PAD_TAGS,
+ g_param_spec_boxed ("tags", "Tags",
+ "The currently active tags on the pad", GST_TYPE_TAG_LIST,
+ G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
+
+ g_object_class_install_property (gobject_class, PROP_PAD_ACTIVE,
+ g_param_spec_boolean ("active", "Active",
+ "If the pad is currently active", FALSE,
+ G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
+}
+
+static void
+gst_selector_pad_init (GstSelectorPad * pad)
+{
+ gst_selector_pad_reset (pad);
+}
+
+static void
+gst_selector_pad_finalize (GObject * object)
+{
+ GstSelectorPad *pad;
+
+ pad = GST_SELECTOR_PAD_CAST (object);
+
+ if (pad->tags)
+ gst_tag_list_free (pad->tags);
+
+ G_OBJECT_CLASS (selector_pad_parent_class)->finalize (object);
+}
+
+static void
+gst_selector_pad_get_property (GObject * object,
+ guint prop_id, GValue * value, GParamSpec * pspec)
+{
+ GstSelectorPad *pad;
+
+ pad = GST_SELECTOR_PAD (object);
+
+ switch (prop_id) {
+ case PROP_PAD_TAGS:
+ GST_OBJECT_LOCK (object);
+ g_value_set_boxed (value, pad->tags);
+ GST_OBJECT_UNLOCK (object);
+ break;
+ case PROP_PAD_ACTIVE:
+ {
+ GstStreamSelector *sel;
+
+ sel = GST_STREAM_SELECTOR (gst_pad_get_parent (pad));
+ g_value_set_boolean (value, gst_stream_selector_is_active_sinkpad (sel,
+ GST_PAD_CAST (pad)));
+ gst_object_unref (sel);
+ break;
+ }
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+}
+
+static void
+gst_selector_pad_reset (GstSelectorPad * pad)
+{
+ pad->active = FALSE;
+ pad->eos = FALSE;
+ gst_segment_init (&pad->segment, GST_FORMAT_UNDEFINED);
+}
+
+static gboolean
+gst_selector_pad_event (GstPad * pad, GstEvent * event)
+{
+ gboolean res = TRUE;
+ gboolean forward = TRUE;
+ GstStreamSelector *sel;
+ GstSelectorPad *selpad;
+ GstPad *active_sinkpad;
+
+ sel = GST_STREAM_SELECTOR (gst_pad_get_parent (pad));
+ selpad = GST_SELECTOR_PAD_CAST (pad);
+
+ /* only forward if we are dealing with the active sinkpad */
+ active_sinkpad = gst_stream_selector_activate_sinkpad (sel, pad);
+ forward = (active_sinkpad == pad);
+
+ switch (GST_EVENT_TYPE (event)) {
+ case GST_EVENT_FLUSH_STOP:
+ gst_selector_pad_reset (selpad);
+ break;
+ case GST_EVENT_NEWSEGMENT:
+ {
+ gboolean update;
+ GstFormat format;
+ gdouble rate, arate;
+ gint64 start, stop, time;
+
+ gst_event_parse_new_segment_full (event, &update, &rate, &arate, &format,
+ &start, &stop, &time);
+
+ GST_DEBUG_OBJECT (selpad,
+ "configured NEWSEGMENT update %d, rate %lf, applied rate %lf, "
+ "format %d, "
+ "%" G_GINT64_FORMAT " -- %" G_GINT64_FORMAT ", time %"
+ G_GINT64_FORMAT, update, rate, arate, format, start, stop, time);
+
+ gst_segment_set_newsegment_full (&selpad->segment, update,
+ rate, arate, format, start, stop, time);
+ /* if we are not going to forward the segment, mark the segment as
+ * pending */
+ if (!forward)
+ selpad->segment_pending = TRUE;
+ break;
+ }
+ case GST_EVENT_TAG:
+ {
+ GstTagList *tags;
+
+ GST_OBJECT_LOCK (selpad);
+ if (selpad->tags)
+ gst_tag_list_free (selpad->tags);
+ gst_event_parse_tag (event, &tags);
+ if (tags)
+ tags = gst_tag_list_copy (tags);
+ selpad->tags = tags;
+ GST_DEBUG_OBJECT (sel, "received tags %" GST_PTR_FORMAT, selpad->tags);
+ GST_OBJECT_UNLOCK (selpad);
+ break;
+ }
+ case GST_EVENT_EOS:
+ selpad->eos = TRUE;
+ break;
+ default:
+ break;
+ }
+ if (forward)
+ res = gst_pad_push_event (sel->srcpad, event);
+ else
+ gst_event_unref (event);
+
+ gst_object_unref (sel);
+
+ return res;
+}
+
+static GstCaps *
+gst_selector_pad_getcaps (GstPad * pad)
+{
+ GstStreamSelector *sel;
+ GstCaps *caps;
+
+ sel = GST_STREAM_SELECTOR (gst_pad_get_parent (pad));
+
+ GST_DEBUG_OBJECT (sel, "Getting caps of srcpad peer");
+ caps = gst_pad_peer_get_caps (sel->srcpad);
+ if (caps == NULL)
+ caps = gst_caps_new_any ();
+
+ gst_object_unref (sel);
+
+ return caps;
+}
+
+static GstFlowReturn
+gst_selector_pad_bufferalloc (GstPad * pad, guint64 offset,
+ guint size, GstCaps * caps, GstBuffer ** buf)
+{
+ GstStreamSelector *sel;
+ GstFlowReturn result;
+ GstPad *active_sinkpad;
+
+ sel = GST_STREAM_SELECTOR (gst_pad_get_parent (pad));
+
+ active_sinkpad = gst_stream_selector_activate_sinkpad (sel, pad);
+
+ /* Fallback allocation for buffers from pads except the selected one */
+ if (pad != active_sinkpad) {
+ GST_DEBUG_OBJECT (sel,
+ "Pad %s:%s is not selected. Performing fallback allocation",
+ GST_DEBUG_PAD_NAME (pad));
+
+ *buf = NULL;
+ result = GST_FLOW_OK;
+ } else {
+ result = gst_pad_alloc_buffer (sel->srcpad, offset, size, caps, buf);
+
+ /* FIXME: HACK. If buffer alloc returns not-linked, perform a fallback
+ * allocation. This should NOT be necessary, because playbin should
+ * properly block the source pad from running until it's finished hooking
+ * everything up, but playbin needs refactoring first. */
+ if (result == GST_FLOW_NOT_LINKED) {
+ GST_DEBUG_OBJECT (sel,
+ "No peer pad yet - performing fallback allocation for pad %s:%s",
+ GST_DEBUG_PAD_NAME (pad));
+
+ *buf = NULL;
+ result = GST_FLOW_OK;
+ }
+ }
+
+ gst_object_unref (sel);
+
+ return result;
+}
+
+static GstFlowReturn
+gst_selector_pad_chain (GstPad * pad, GstBuffer * buf)
+{
+ GstStreamSelector *sel;
+ GstFlowReturn res;
+ GstPad *active_sinkpad;
+ GstSelectorPad *selpad;
+ GstClockTime timestamp;
+ GstSegment *seg;
+
+ sel = GST_STREAM_SELECTOR (gst_pad_get_parent (pad));
+ selpad = GST_SELECTOR_PAD_CAST (pad);
+ seg = &selpad->segment;
+
+ active_sinkpad = gst_stream_selector_activate_sinkpad (sel, pad);
+
+ timestamp = GST_BUFFER_TIMESTAMP (buf);
+ if (GST_CLOCK_TIME_IS_VALID (timestamp)) {
+ GST_DEBUG_OBJECT (sel, "received timestamp %" GST_TIME_FORMAT,
+ GST_TIME_ARGS (timestamp));
+ gst_segment_set_last_stop (seg, seg->format, timestamp);
+ }
+
+ /* Ignore buffers from pads except the selected one */
+ if (pad != active_sinkpad)
+ goto ignore;
+
+ /* if we have a pending segment, push it out now */
+ if (selpad->segment_pending) {
+ gst_pad_push_event (sel->srcpad, gst_event_new_new_segment_full (FALSE,
+ seg->rate, seg->applied_rate, seg->format, seg->start, seg->stop,
+ seg->time));
+
+ selpad->segment_pending = FALSE;
+ }
+
+ /* forward */
+ GST_DEBUG_OBJECT (sel, "Forwarding buffer %p from pad %s:%s", buf,
+ GST_DEBUG_PAD_NAME (pad));
+ res = gst_pad_push (sel->srcpad, buf);
+done:
+ gst_object_unref (sel);
+ return res;
+ /* dropped buffers */
+ignore:
+ {
+ GST_DEBUG_OBJECT (sel, "Ignoring buffer %p from pad %s:%s",
+ buf, GST_DEBUG_PAD_NAME (pad));
+ gst_buffer_unref (buf);
+ res = GST_FLOW_NOT_LINKED;
+ goto done;
+ }
+}
+
+static void gst_stream_selector_dispose (GObject * object);
+
+static void gst_stream_selector_init (GstStreamSelector * sel);
+static void gst_stream_selector_base_init (GstStreamSelectorClass * klass);
+static void gst_stream_selector_class_init (GstStreamSelectorClass * klass);
+
+static void gst_stream_selector_set_property (GObject * object,
+ guint prop_id, const GValue * value, GParamSpec * pspec);
+static void gst_stream_selector_get_property (GObject * object,
+ guint prop_id, GValue * value, GParamSpec * pspec);
+
+static GstPad *gst_stream_selector_request_new_pad (GstElement * element,
+ GstPadTemplate * templ, const gchar * unused);
+static void gst_stream_selector_release_pad (GstElement * element,
+ GstPad * pad);
+static GstIterator *gst_stream_selector_pad_iterate_linked_pads (GstPad * pad);
+static GstCaps *gst_stream_selector_getcaps (GstPad * pad);
+
+static GstElementClass *parent_class = NULL;
+
+GType
+gst_stream_selector_get_type (void)
+{
+ static GType stream_selector_type = 0;
+
+ if (!stream_selector_type) {
+ static const GTypeInfo stream_selector_info = {
+ sizeof (GstStreamSelectorClass),
+ (GBaseInitFunc) gst_stream_selector_base_init,
+ NULL,
+ (GClassInitFunc) gst_stream_selector_class_init,
+ NULL,
+ NULL,
+ sizeof (GstStreamSelector),
+ 0,
+ (GInstanceInitFunc) gst_stream_selector_init,
+ };
+ stream_selector_type =
+ g_type_register_static (GST_TYPE_ELEMENT,
+ "GstStreamSelector", &stream_selector_info, 0);
+ GST_DEBUG_CATEGORY_INIT (stream_selector_debug,
+ "streamselector", 0, "A stream-selector element");
+ }
+
+ return stream_selector_type;
+}
+
+static void
+gst_stream_selector_base_init (GstStreamSelectorClass * klass)
+{
+ GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
+
+ gst_element_class_set_details_simple (element_class,
+ "StreamSelector", "Generic",
+ "N-to-1 input stream_selectoring",
+ "Julien Moutte <julien@moutte.net>, "
+ "Jan Schmidt <thaytan@mad.scientist.com>, "
+ "Wim Taymans <wim.taymans@gmail.com>");
+ gst_element_class_add_pad_template (element_class,
+ gst_static_pad_template_get (&gst_stream_selector_sink_factory));
+ gst_element_class_add_pad_template (element_class,
+ gst_static_pad_template_get (&gst_stream_selector_src_factory));
+}
+
+static void
+gst_stream_selector_class_init (GstStreamSelectorClass * klass)
+{
+ GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
+ GstElementClass *gstelement_class = GST_ELEMENT_CLASS (klass);
+
+ parent_class = g_type_class_peek_parent (klass);
+
+ gobject_class->dispose = gst_stream_selector_dispose;
+
+ gobject_class->set_property = gst_stream_selector_set_property;
+ gobject_class->get_property = gst_stream_selector_get_property;
+
+ g_object_class_install_property (gobject_class, PROP_N_PADS,
+ g_param_spec_uint ("n-pads", "Number of Pads",
+ "The number of sink pads", 0, G_MAXUINT, 0,
+ G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
+ g_object_class_install_property (gobject_class, PROP_ACTIVE_PAD,
+ g_param_spec_object ("active-pad", "Active Pad",
+ "The currently active sink pad", GST_TYPE_PAD,
+ G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
+
+ gstelement_class->request_new_pad = gst_stream_selector_request_new_pad;
+ gstelement_class->release_pad = gst_stream_selector_release_pad;
+}
+
+static void
+gst_stream_selector_init (GstStreamSelector * sel)
+{
+ sel->srcpad = gst_pad_new ("src", GST_PAD_SRC);
+ gst_pad_set_iterate_internal_links_function (sel->srcpad,
+ GST_DEBUG_FUNCPTR (gst_stream_selector_pad_iterate_linked_pads));
+ gst_pad_set_getcaps_function (sel->srcpad,
+ GST_DEBUG_FUNCPTR (gst_stream_selector_getcaps));
+ gst_element_add_pad (GST_ELEMENT (sel), sel->srcpad);
+ /* sinkpad management */
+ sel->padcount = 0;
+ sel->active_sinkpad = NULL;
+ gst_segment_init (&sel->segment, GST_FORMAT_UNDEFINED);
+}
+
+static void
+gst_stream_selector_dispose (GObject * object)
+{
+ GstStreamSelector *sel = GST_STREAM_SELECTOR (object);
+
+ if (sel->active_sinkpad) {
+ gst_object_unref (sel->active_sinkpad);
+ sel->active_sinkpad = NULL;
+ }
+
+ G_OBJECT_CLASS (parent_class)->dispose (object);
+}
+
+static void
+gst_stream_selector_set_property (GObject * object, guint prop_id,
+ const GValue * value, GParamSpec * pspec)
+{
+ GstStreamSelector *sel = GST_STREAM_SELECTOR (object);
+
+ switch (prop_id) {
+ case PROP_ACTIVE_PAD:
+ {
+ GstPad *pad = NULL;
+ GstPad **active_pad_p;
+
+ pad = g_value_get_object (value);
+
+ GST_OBJECT_LOCK (object);
+ if (pad != sel->active_sinkpad) {
+ GstSelectorPad *selpad;
+
+ selpad = GST_SELECTOR_PAD_CAST (pad);
+ /* we can only activate pads that have data received */
+ if (selpad && !selpad->active) {
+ GST_DEBUG_OBJECT (sel, "No data received on pad %" GST_PTR_FORMAT,
+ pad);
+ } else {
+ active_pad_p = &sel->active_sinkpad;
+ gst_object_replace ((GstObject **) active_pad_p,
+ GST_OBJECT_CAST (pad));
+ GST_DEBUG_OBJECT (sel, "New active pad is %" GST_PTR_FORMAT,
+ sel->active_sinkpad);
+ }
+ }
+ GST_OBJECT_UNLOCK (object);
+ break;
+ }
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+}
+
+static void
+gst_stream_selector_get_property (GObject * object, guint prop_id,
+ GValue * value, GParamSpec * pspec)
+{
+ GstStreamSelector *sel = GST_STREAM_SELECTOR (object);
+
+ switch (prop_id) {
+ case PROP_N_PADS:
+ GST_OBJECT_LOCK (object);
+ g_value_set_uint (value, sel->n_pads);
+ GST_OBJECT_UNLOCK (object);
+ break;
+ case PROP_ACTIVE_PAD:{
+ GST_OBJECT_LOCK (object);
+ g_value_set_object (value, sel->active_sinkpad);
+ GST_OBJECT_UNLOCK (object);
+ break;
+ }
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+}
+
+static GstPad *
+gst_stream_selector_get_linked_pad (GstPad * pad, gboolean strict)
+{
+ GstStreamSelector *sel;
+ GstPad *otherpad = NULL;
+
+ sel = GST_STREAM_SELECTOR (gst_pad_get_parent (pad));
+
+ GST_OBJECT_LOCK (sel);
+ if (pad == sel->srcpad)
+ otherpad = sel->active_sinkpad;
+ else if (pad == sel->active_sinkpad || !strict)
+ otherpad = sel->srcpad;
+ if (otherpad)
+ gst_object_ref (otherpad);
+ GST_OBJECT_UNLOCK (sel);
+ gst_object_unref (sel);
+ return otherpad;
+}
+
+static GstCaps *
+gst_stream_selector_getcaps (GstPad * pad)
+{
+ GstPad *otherpad;
+ GstObject *parent;
+ GstCaps *caps;
+
+ otherpad = gst_stream_selector_get_linked_pad (pad, FALSE);
+ parent = gst_object_get_parent (GST_OBJECT (pad));
+ if (!otherpad) {
+ GST_DEBUG_OBJECT (parent,
+ "Pad %s:%s not linked, returning ANY", GST_DEBUG_PAD_NAME (pad));
+ caps = gst_caps_new_any ();
+ } else {
+ GST_DEBUG_OBJECT (parent,
+ "Pad %s:%s is linked (to %s:%s), returning peer caps",
+ GST_DEBUG_PAD_NAME (pad), GST_DEBUG_PAD_NAME (otherpad));
+ /* if the peer has caps, use those. If the pad is not linked, this function
+ * returns NULL and we return ANY */
+ if (!(caps = gst_pad_peer_get_caps (otherpad)))
+ caps = gst_caps_new_any ();
+ gst_object_unref (otherpad);
+ }
+
+ gst_object_unref (parent);
+ return caps;
+}
+
+/* check if the pad is the active sinkpad */
+static gboolean
+gst_stream_selector_is_active_sinkpad (GstStreamSelector * sel, GstPad * pad)
+{
+ gboolean res;
+
+ GST_OBJECT_LOCK (sel);
+ res = (pad == sel->active_sinkpad);
+ GST_OBJECT_UNLOCK (sel);
+
+ return res;
+}
+
+/* Get or create the active sinkpad */
+static GstPad *
+gst_stream_selector_activate_sinkpad (GstStreamSelector * sel, GstPad * pad)
+{
+ GstPad *active_sinkpad;
+ GstSelectorPad *selpad;
+
+ selpad = GST_SELECTOR_PAD_CAST (pad);
+
+ GST_OBJECT_LOCK (sel);
+ selpad->active = TRUE;
+ active_sinkpad = sel->active_sinkpad;
+ if (active_sinkpad == NULL) {
+ /* first pad we get an alloc on becomes the activated pad by default */
+ active_sinkpad = sel->active_sinkpad = gst_object_ref (pad);
+ GST_DEBUG_OBJECT (sel, "Activating pad %s:%s", GST_DEBUG_PAD_NAME (pad));
+ }
+ GST_OBJECT_UNLOCK (sel);
+
+ return active_sinkpad;
+}
+
+static GstIterator *
+gst_stream_selector_pad_iterate_linked_pads (GstPad * pad)
+{
+ GstStreamSelector *sel = GST_STREAM_SELECTOR (gst_pad_get_parent (pad));
+ GstPad *otherpad;
+ GstIterator *ret;
+
+ otherpad = gst_stream_selector_get_linked_pad (pad, TRUE);
+ ret =
+ gst_iterator_new_single (GST_TYPE_PAD, otherpad,
+ (GstCopyFunction) gst_object_ref, (GFreeFunc) gst_object_unref);
+
+ if (otherpad)
+ gst_object_unref (otherpad);
+ gst_object_unref (sel);
+
+ return ret;
+}
+
+static GstPad *
+gst_stream_selector_request_new_pad (GstElement * element,
+ GstPadTemplate * templ, const gchar * unused)
+{
+ GstStreamSelector *sel;
+ gchar *name = NULL;
+ GstPad *sinkpad = NULL;
+
+ sel = GST_STREAM_SELECTOR (element);
+ g_return_val_if_fail (templ->direction == GST_PAD_SINK, NULL);
+ GST_LOG_OBJECT (sel, "Creating new pad %d", sel->padcount);
+ GST_OBJECT_LOCK (sel);
+ name = g_strdup_printf ("sink%d", sel->padcount++);
+ sinkpad = g_object_new (GST_TYPE_SELECTOR_PAD,
+ "name", name, "direction", templ->direction, "template", templ, NULL);
+ g_free (name);
+ sel->n_pads++;
+ GST_OBJECT_UNLOCK (sel);
+
+ gst_pad_set_event_function (sinkpad,
+ GST_DEBUG_FUNCPTR (gst_selector_pad_event));
+ gst_pad_set_getcaps_function (sinkpad,
+ GST_DEBUG_FUNCPTR (gst_selector_pad_getcaps));
+ gst_pad_set_chain_function (sinkpad,
+ GST_DEBUG_FUNCPTR (gst_selector_pad_chain));
+ gst_pad_set_iterate_internal_links_function (sinkpad,
+ GST_DEBUG_FUNCPTR (gst_stream_selector_pad_iterate_linked_pads));
+ gst_pad_set_bufferalloc_function (sinkpad,
+ GST_DEBUG_FUNCPTR (gst_selector_pad_bufferalloc));
+
+ gst_pad_set_active (sinkpad, TRUE);
+ gst_element_add_pad (GST_ELEMENT (sel), sinkpad);
+ return sinkpad;
+}
+
+static void
+gst_stream_selector_release_pad (GstElement * element, GstPad * pad)
+{
+ GstStreamSelector *sel;
+
+ sel = GST_STREAM_SELECTOR (element);
+ GST_LOG_OBJECT (sel, "Releasing pad %s:%s", GST_DEBUG_PAD_NAME (pad));
+
+ GST_OBJECT_LOCK (sel);
+ /* if the pad was the active pad, makes us select a new one */
+ if (sel->active_sinkpad == pad) {
+ GST_DEBUG_OBJECT (sel, "Deactivating pad %s:%s", GST_DEBUG_PAD_NAME (pad));
+ sel->active_sinkpad = NULL;
+ }
+ sel->n_pads--;
+ GST_OBJECT_UNLOCK (sel);
+
+ gst_pad_set_active (pad, FALSE);
+ gst_element_remove_pad (GST_ELEMENT (sel), pad);
+}
projects / mafwsubrenderer / blobdiff