--- /dev/null
+/* GStreamer
+ * Copyright (C) 2003 Julien Moutte <julien@moutte.net>
+ *
+ * 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
+
+/* Object header */
+#include "gstswitch.h"
+
+enum {
+ ARG_0,
+ ARG_NB_SOURCES,
+ ARG_ACTIVE_SOURCE
+};
+
+/* ElementFactory information */
+static GstElementDetails gst_switch_details = GST_ELEMENT_DETAILS (
+ "Switch",
+ "Generic",
+ "N-to-1 input switching",
+ "Julien Moutte <julien@moutte.net>"
+);
+
+GST_PAD_TEMPLATE_FACTORY (gst_switch_sink_factory,
+ "sink%d",
+ GST_PAD_SINK,
+ GST_PAD_REQUEST,
+ GST_CAPS_ANY
+);
+
+static GstElementClass *parent_class = NULL;
+
+/* ============================================================= */
+/* */
+/* Private Methods */
+/* */
+/* ============================================================= */
+
+static GstPad*
+gst_switch_request_new_pad (GstElement *element,
+ GstPadTemplate *templ,
+ const gchar *unused)
+{
+ char *name = NULL;
+ GstPad *sinkpad = NULL;
+ GstSwitch *gstswitch = NULL;
+ GstSwitchPad *switchpad = NULL;
+
+ g_return_val_if_fail (GST_IS_SWITCH (element), NULL);
+
+ if (templ->direction != GST_PAD_SINK) {
+ g_warning ("gstswitch: requested a non sink pad\n");
+ return NULL;
+ }
+
+ gstswitch = GST_SWITCH (element);
+
+ name = g_strdup_printf ("sink%d", gstswitch->nb_sinkpads);
+
+ sinkpad = gst_pad_new_from_template (templ, name);
+
+ if (name)
+ g_free (name);
+
+ gst_element_add_pad (GST_ELEMENT (gstswitch), sinkpad);
+
+ switchpad = g_new0 (GstSwitchPad, 1);
+ if (!switchpad)
+ return NULL;
+
+ switchpad->sinkpad = sinkpad;
+ switchpad->data = NULL;
+ switchpad->forwarded = FALSE;
+
+ gstswitch->sinkpads = g_list_insert (gstswitch->sinkpads, switchpad,
+ gstswitch->nb_sinkpads);
+ gstswitch->nb_sinkpads++;
+
+ return sinkpad;
+}
+
+static gboolean
+gst_switch_poll_sinkpads (GstSwitch *gstswitch)
+{
+ GList *pads;
+
+ g_return_val_if_fail (gstswitch != NULL, FALSE);
+ g_return_val_if_fail (GST_IS_SWITCH (gstswitch), FALSE);
+
+ pads = gstswitch->sinkpads;
+
+ while (pads) {
+ GstSwitchPad *switchpad = pads->data;
+ GstData *data = gst_pad_pull (switchpad->sinkpad);
+ if (GST_IS_EVENT (data) &&
+ (GST_EVENT_TYPE (GST_EVENT (data)) == GST_EVENT_EOS)) {
+ /* If that data was not forwarded we unref it */
+ if (!switchpad->forwarded && switchpad->data) {
+ gst_data_unref (switchpad->data);
+ switchpad->data = NULL;
+ }
+ gst_event_unref (GST_EVENT (data));
+ }
+ else {
+ /* If that data was not forwarded we unref it */
+ if (!switchpad->forwarded && switchpad->data) {
+ gst_data_unref (switchpad->data);
+ switchpad->data = NULL;
+ }
+ switchpad->data = data;
+ switchpad->forwarded = FALSE;
+ }
+ pads = g_list_next (pads);
+ }
+
+ return TRUE;
+}
+
+static void
+gst_switch_loop (GstElement *element)
+{
+ GstSwitch *gstswitch = NULL;
+ GstSwitchPad *switchpad = NULL;
+
+ g_return_if_fail (element != NULL);
+ g_return_if_fail (GST_IS_SWITCH (element));
+
+ gstswitch = GST_SWITCH (element);
+
+ /* We poll all our sinkpads */
+ gst_switch_poll_sinkpads (gstswitch);
+
+ /* We get the active sinkpad */
+ switchpad = g_list_nth_data (gstswitch->sinkpads, gstswitch->active_sinkpad);
+
+ if (switchpad) {
+ /* Pushing active sinkpad data to srcpad */
+ gst_pad_push (gstswitch->srcpad, switchpad->data);
+ /* Mark this data as forwarded so that it won't get unrefed on next poll */
+ switchpad->forwarded = TRUE;
+ }
+}
+
+/* =========================================== */
+/* */
+/* Properties */
+/* */
+/* =========================================== */
+
+static void
+gst_switch_set_property (GObject *object, guint prop_id,
+ const GValue *value, GParamSpec *pspec)
+{
+ GstSwitch *gstswitch = NULL;
+
+ g_return_if_fail (GST_IS_SWITCH (object));
+
+ gstswitch = GST_SWITCH (object);
+
+ switch (prop_id) {
+ case ARG_ACTIVE_SOURCE:
+ gstswitch->active_sinkpad = g_value_get_int (value);
+ break;
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+}
+
+static void
+gst_switch_get_property (GObject *object, guint prop_id,
+ GValue *value, GParamSpec *pspec)
+{
+ GstSwitch *gstswitch = NULL;
+
+ g_return_if_fail (GST_IS_SWITCH (object));
+
+ gstswitch = GST_SWITCH (object);
+
+ switch (prop_id) {
+ case ARG_ACTIVE_SOURCE:
+ g_value_set_int (value, gstswitch->active_sinkpad);
+ break;
+ case ARG_NB_SOURCES:
+ g_value_set_int (value, gstswitch->nb_sinkpads);
+ break;
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+}
+
+/* =========================================== */
+/* */
+/* Init & Class init */
+/* */
+/* =========================================== */
+
+static void
+gst_switch_dispose (GObject *object)
+{
+ GstSwitch *gstswitch = NULL;
+
+ gstswitch = GST_SWITCH (object);
+
+ if (gstswitch->sinkpads) {
+ g_list_free (gstswitch->sinkpads);
+ gstswitch->sinkpads = NULL;
+ }
+
+ G_OBJECT_CLASS (parent_class)->dispose (object);
+}
+
+static void
+gst_switch_init (GstSwitch *gstswitch)
+{
+ gstswitch->srcpad = gst_pad_new ("src", GST_PAD_SRC);
+ gst_element_add_pad (GST_ELEMENT (gstswitch), gstswitch->srcpad);
+
+ gst_element_set_loop_function (GST_ELEMENT (gstswitch), gst_switch_loop);
+
+ gstswitch->sinkpads = NULL;
+ gstswitch->active_sinkpad = 0;
+ gstswitch->nb_sinkpads = 0;
+}
+
+static void
+gst_switch_base_init (gpointer g_class)
+{
+ GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
+
+ gst_element_class_set_details (element_class, &gst_switch_details);
+
+ gst_element_class_add_pad_template (element_class,
+ GST_PAD_TEMPLATE_GET (gst_switch_sink_factory));
+}
+
+static void
+gst_switch_class_init (GstSwitchClass *klass)
+{
+ GObjectClass *gobject_class;
+ GstElementClass *gstelement_class;
+
+ gobject_class = (GObjectClass *) klass;
+ gstelement_class = (GstElementClass *) klass;
+
+ parent_class = g_type_class_ref (GST_TYPE_ELEMENT);
+
+ g_object_class_install_property (gobject_class,
+ ARG_NB_SOURCES,
+ g_param_spec_int ("nb_sources",
+ "number of sources",
+ "number of sources",
+ G_MININT, G_MAXINT, 0,
+ G_PARAM_READABLE));
+ g_object_class_install_property (gobject_class,
+ ARG_ACTIVE_SOURCE,
+ g_param_spec_int ("active_source",
+ "active source",
+ "active source",
+ G_MININT, G_MAXINT, 0,
+ G_PARAM_READWRITE));
+
+ gobject_class->dispose = gst_switch_dispose;
+ gobject_class->set_property = gst_switch_set_property;
+ gobject_class->get_property = gst_switch_get_property;
+
+ gstelement_class->request_new_pad = gst_switch_request_new_pad;
+}
+
+/* ============================================================= */
+/* */
+/* Public Methods */
+/* */
+/* ============================================================= */
+
+GType
+gst_switch_get_type (void)
+{
+ static GType switch_type = 0;
+
+ if (!switch_type) {
+ static const GTypeInfo switch_info = {
+ sizeof(GstSwitchClass),
+ gst_switch_base_init,
+ NULL,
+ (GClassInitFunc) gst_switch_class_init,
+ NULL,
+ NULL,
+ sizeof(GstSwitch),
+ 0,
+ (GInstanceInitFunc) gst_switch_init,
+ };
+
+ switch_type = g_type_register_static (GST_TYPE_ELEMENT,
+ "GstSwitch", &switch_info, 0);
+ }
+
+ return switch_type;
+}
+
+static gboolean
+plugin_init (GstPlugin *plugin)
+{
+ return gst_element_register (plugin, "switch", GST_RANK_NONE,
+ GST_TYPE_SWITCH);
+}
+
+GST_PLUGIN_DEFINE (
+ GST_VERSION_MAJOR,
+ GST_VERSION_MINOR,
+ "switch",
+ "N-to-1 input switching",
+ plugin_init,
+ VERSION,
+ GST_LICENSE,
+ GST_PACKAGE,
+ GST_ORIGIN
+)
--- /dev/null
+/* GStreamer
+ * Copyright (C) 2003 Julien Moutte <julien@moutte.net>
+ *
+ * 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.
+ */
+
+#ifndef __GST_SWITCH_H__
+#define __GST_SWITCH_H__
+
+#include <gst/gst.h>
+
+G_BEGIN_DECLS
+
+#define GST_TYPE_SWITCH \
+ (gst_switch_get_type())
+#define GST_SWITCH(obj) \
+ (G_TYPE_CHECK_INSTANCE_CAST((obj), GST_TYPE_SWITCH, GstSwitch))
+#define GST_SWITCH_CLASS(klass) \
+ (G_TYPE_CHECK_CLASS_CAST((klass), GST_TYPE_SWITCH, GstSwitch))
+#define GST_IS_SWITCH(obj) \
+ (G_TYPE_CHECK_INSTANCE_TYPE((obj), GST_TYPE_SWITCH))
+#define GST_IS_SWITCH_CLASS(obj) \
+ (G_TYPE_CHECK_CLASS_TYPE((klass), GST_TYPE_SWITCH))
+
+typedef struct _GstSwitchPad GstSwitchPad;
+
+typedef struct _GstSwitch GstSwitch;
+typedef struct _GstSwitchClass GstSwitchClass;
+
+struct _GstSwitchPad {
+ GstPad *sinkpad;
+ GstData *data;
+ gboolean forwarded;
+};
+
+struct _GstSwitch {
+ GstElement element;
+
+ GList *sinkpads;
+ GstPad *srcpad;
+
+ guint nb_sinkpads;
+ guint active_sinkpad;
+};
+
+struct _GstSwitchClass {
+ GstElementClass parent_class;
+};
+
+GType gst_switch_get_type (void);
+
+G_END_DECLS
+
+#endif /* __GST_SWITCH_H__ */
projects / platform / upstream / gstreamer.git / commitdiff