gstreamer/plugins/elements/gstidentity.c

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/* Gnome-Streamer
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
*
* 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.
*/
#include <gstidentity.h>
GstElementDetails gst_identity_details = {
"Identity",
"Filter",
"Pass data without modification",
VERSION,
"Erik Walthinsen <omega@cse.ogi.edu>",
"(C) 1999",
};
/* Identity signals and args */
enum {
/* FILL ME */
LAST_SIGNAL
};
enum {
ARG_0,
ARG_CONTROL
};
static void gst_identity_class_init (GstIdentityClass *klass);
static void gst_identity_init (GstIdentity *identity);
static void gst_identity_set_arg (GtkObject *object, GtkArg *arg, guint id);
static void gst_identity_get_arg (GtkObject *object, GtkArg *arg, guint id);
static void gst_identity_chain (GstPad *pad, GstBuffer *buf);
static GstFilterClass *parent_class = NULL;
//static guint gst_identity_signals[LAST_SIGNAL] = { 0 };
GtkType
gst_identity_get_type (void)
{
static GtkType identity_type = 0;
if (!identity_type) {
static const GtkTypeInfo identity_info = {
"GstIdentity",
sizeof(GstIdentity),
sizeof(GstIdentityClass),
(GtkClassInitFunc)gst_identity_class_init,
(GtkObjectInitFunc)gst_identity_init,
(GtkArgSetFunc)gst_identity_set_arg,
(GtkArgGetFunc)gst_identity_get_arg,
(GtkClassInitFunc)NULL,
};
identity_type = gtk_type_unique (GST_TYPE_FILTER, &identity_info);
}
return identity_type;
}
static void
gst_identity_class_init (GstIdentityClass *klass)
{
GtkObjectClass *gtkobject_class;
GstFilterClass *gstfilter_class;
gtkobject_class = (GtkObjectClass*)klass;
gstfilter_class = (GstFilterClass*)klass;
parent_class = gtk_type_class (GST_TYPE_FILTER);
//gtk_object_add_arg_type("GstIdentity::control", GTK_TYPE_INT,
// GTK_ARG_READWRITE, ARG_CONTROL);
//gtkobject_class->set_arg = gst_identity_set_arg;
//gtkobject_class->get_arg = gst_identity_get_arg;
}
static void
gst_identity_init (GstIdentity *identity)
{
identity->sinkpad = gst_pad_new ("sink", GST_PAD_SINK);
gst_element_add_pad (GST_ELEMENT (identity), identity->sinkpad);
gst_pad_set_chain_function (identity->sinkpad, gst_identity_chain);
identity->srcpad = gst_pad_new ("src", GST_PAD_SRC);
gst_element_add_pad (GST_ELEMENT (identity), identity->srcpad);
identity->control = 0;
}
static void
gst_identity_chain (GstPad *pad, GstBuffer *buf)
{
GstIdentity *identity;
g_return_if_fail (pad != NULL);
g_return_if_fail (GST_IS_PAD (pad));
g_return_if_fail (buf != NULL);
identity = GST_IDENTITY (pad->parent);
// g_print("gst_identity_chain: got buffer in '%s'\n",
// gst_element_get_name(GST_ELEMENT(identity)));
g_print("i");
gst_pad_push (identity->srcpad, buf);
}
static void
gst_identity_set_arg (GtkObject *object, GtkArg *arg, guint id)
{
GstIdentity *identity;
/* it's not null if we got it, but it might not be ours */
g_return_if_fail (GST_IS_IDENTITY (object));
identity = GST_IDENTITY (object);
switch(id) {
case ARG_CONTROL:
identity->control = GTK_VALUE_INT (*arg);
break;
default:
break;
}
}
static void gst_identity_get_arg(GtkObject *object,GtkArg *arg,guint id) {
GstIdentity *identity;
/* it's not null if we got it, but it might not be ours */
g_return_if_fail (GST_IS_IDENTITY (object));
identity = GST_IDENTITY (object);
switch (id) {
case ARG_CONTROL:
GTK_VALUE_INT (*arg) = identity->control;
break;
default:
arg->type = GTK_TYPE_INVALID;
break;
}
}