gstreamer/gst/elements/gstfakesink.c

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/* GStreamer
* Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
* 2000 Wim Taymans <wtay@chello.be>
*
* gstfakesink.c:
*
* 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 <gstfakesink.h>
GstElementDetails gst_fakesink_details = {
"Fake Sink",
"Sink",
"Black hole for data",
VERSION,
"Erik Walthinsen <omega@cse.ogi.edu>",
"(C) 1999",
};
/* FakeSink signals and args */
enum {
/* FILL ME */
SIGNAL_HANDOFF,
LAST_SIGNAL
};
enum {
ARG_0,
ARG_NUM_SOURCES,
};
static void gst_fakesink_class_init (GstFakeSinkClass *klass);
static void gst_fakesink_init (GstFakeSink *fakesink);
static void gst_fakesink_set_arg (GtkObject *object, GtkArg *arg, guint id);
static void gst_fakesink_get_arg (GtkObject *object, GtkArg *arg, guint id);
static void gst_fakesink_chain (GstPad *pad,GstBuffer *buf);
static GstElementClass *parent_class = NULL;
static guint gst_fakesink_signals[LAST_SIGNAL] = { 0 };
GtkType
gst_fakesink_get_type (void)
{
static GtkType fakesink_type = 0;
if (!fakesink_type) {
static const GtkTypeInfo fakesink_info = {
"GstFakeSink",
sizeof(GstFakeSink),
sizeof(GstFakeSinkClass),
(GtkClassInitFunc)gst_fakesink_class_init,
(GtkObjectInitFunc)gst_fakesink_init,
(GtkArgSetFunc)NULL,
(GtkArgGetFunc)NULL,
(GtkClassInitFunc)NULL,
};
fakesink_type = gtk_type_unique (GST_TYPE_ELEMENT, &fakesink_info);
}
return fakesink_type;
}
static void
gst_fakesink_class_init (GstFakeSinkClass *klass)
{
GtkObjectClass *gtkobject_class;
gtkobject_class = (GtkObjectClass*)klass;
parent_class = gtk_type_class (GST_TYPE_ELEMENT);
gtk_object_add_arg_type ("GstFakeSink::num_sources", GTK_TYPE_INT,
GTK_ARG_READWRITE, ARG_NUM_SOURCES);
gst_fakesink_signals[SIGNAL_HANDOFF] =
gtk_signal_new ("handoff", GTK_RUN_LAST, gtkobject_class->type,
GTK_SIGNAL_OFFSET (GstFakeSinkClass, handoff),
gtk_marshal_NONE__NONE, GTK_TYPE_NONE, 0);
gtk_object_class_add_signals (gtkobject_class, gst_fakesink_signals,
LAST_SIGNAL);
gtkobject_class->set_arg = gst_fakesink_set_arg;
gtkobject_class->get_arg = gst_fakesink_get_arg;
}
static void
gst_fakesink_init (GstFakeSink *fakesink)
{
GstPad *pad;
pad = gst_pad_new ("sink", GST_PAD_SINK);
gst_element_add_pad (GST_ELEMENT (fakesink), pad);
gst_pad_set_chain_function (pad, gst_fakesink_chain);
fakesink->sinkpads = g_slist_prepend (NULL, pad);
fakesink->numsinkpads = 1;
// we're ready right away, since we don't have any args...
// gst_element_set_state(GST_ELEMENT(fakesink),GST_STATE_READY);
}
static void
gst_fakesink_set_arg (GtkObject *object, GtkArg *arg, guint id)
{
GstFakeSink *sink;
gint new_numsinks;
GstPad *pad;
/* it's not null if we got it, but it might not be ours */
sink = GST_FAKESINK (object);
switch(id) {
case ARG_NUM_SOURCES:
new_numsinks = GTK_VALUE_INT (*arg);
while (sink->numsinkpads < new_numsinks) {
pad = gst_pad_new (g_strdup_printf ("sink%d", sink->numsinkpads), GST_PAD_SINK);
gst_pad_set_chain_function (pad, gst_fakesink_chain);
gst_element_add_pad (GST_ELEMENT (sink), pad);
sink->sinkpads = g_slist_append (sink->sinkpads, pad);
sink->numsinkpads++;
}
break;
default:
break;
}
}
static void
gst_fakesink_get_arg (GtkObject *object, GtkArg *arg, guint id)
{
GstFakeSink *sink;
/* it's not null if we got it, but it might not be ours */
g_return_if_fail (GST_IS_FAKESINK (object));
sink = GST_FAKESINK (object);
switch (id) {
case ARG_NUM_SOURCES:
GTK_VALUE_INT (*arg) = sink->numsinkpads;
break;
default:
arg->type = GTK_TYPE_INVALID;
break;
}
}
/**
* gst_fakesink_chain:
* @pad: the pad this faksink is connected to
* @buf: the buffer that has to be absorbed
*
* take the buffer from the pad and unref it without doing
* anything with it.
*/
static void
gst_fakesink_chain (GstPad *pad, GstBuffer *buf)
{
GstFakeSink *fakesink;
g_return_if_fail (pad != NULL);
g_return_if_fail (GST_IS_PAD (pad));
g_return_if_fail (buf != NULL);
fakesink = GST_FAKESINK (gst_pad_get_parent (pad));
g_print("fakesink: ******* (%s:%s)< \n",GST_DEBUG_PAD_NAME(pad));
gst_buffer_unref (buf);
gtk_signal_emit (GTK_OBJECT (fakesink), gst_fakesink_signals[SIGNAL_HANDOFF],
fakesink);
}