gstreamer/plugins/elements/gstfdsink.c

165 lines
4 KiB
C
Raw Normal View History

/* GStreamer
* Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
* 2000 Wim Taymans <wtay@chello.be>
*
* gstfdsink.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 <gstfdsink.h>
#include <unistd.h>
GstElementDetails gst_fdsink_details = {
"Filedescriptor Sink",
"Sink",
"Write data to a file descriptor",
VERSION,
"Erik Walthinsen <omega@cse.ogi.edu>",
"(C) 1999",
};
/* FdSink signals and args */
enum {
/* FILL ME */
LAST_SIGNAL
};
enum {
ARG_0,
ARG_FD
};
static void gst_fdsink_class_init (GstFdSinkClass *klass);
static void gst_fdsink_init (GstFdSink *fdsink);
static void gst_fdsink_set_arg (GtkObject *object, GtkArg *arg, guint id);
static void gst_fdsink_get_arg (GtkObject *object, GtkArg *arg, guint id);
static void gst_fdsink_chain (GstPad *pad,GstBuffer *buf);
static GstElementClass *parent_class = NULL;
//static guint gst_fdsink_signals[LAST_SIGNAL] = { 0 };
GtkType
gst_fdsink_get_type (void)
{
static GtkType fdsink_type = 0;
if (!fdsink_type) {
static const GtkTypeInfo fdsink_info = {
"GstFdSink",
sizeof(GstFdSink),
sizeof(GstFdSinkClass),
(GtkClassInitFunc)gst_fdsink_class_init,
(GtkObjectInitFunc)gst_fdsink_init,
(GtkArgSetFunc)gst_fdsink_set_arg,
(GtkArgGetFunc)gst_fdsink_get_arg,
(GtkClassInitFunc)NULL,
};
fdsink_type = gtk_type_unique (GST_TYPE_ELEMENT, &fdsink_info);
}
return fdsink_type;
}
static void
gst_fdsink_class_init (GstFdSinkClass *klass)
{
GtkObjectClass *gtkobject_class;
gtkobject_class = (GtkObjectClass*)klass;
parent_class = gtk_type_class (GST_TYPE_ELEMENT);
gtk_object_add_arg_type ("GstFdSink::fd", GTK_TYPE_INT,
GTK_ARG_READWRITE, ARG_FD);
gtkobject_class->set_arg = gst_fdsink_set_arg;
gtkobject_class->get_arg = gst_fdsink_get_arg;
}
static void
gst_fdsink_init (GstFdSink *fdsink)
{
fdsink->sinkpad = gst_pad_new ("sink", GST_PAD_SINK);
gst_element_add_pad (GST_ELEMENT (fdsink), fdsink->sinkpad);
gst_pad_set_chain_function (fdsink->sinkpad, gst_fdsink_chain);
fdsink->fd = 1;
}
static void
gst_fdsink_chain (GstPad *pad, GstBuffer *buf)
{
GstFdSink *fdsink;
g_return_if_fail (pad != NULL);
g_return_if_fail (GST_IS_PAD (pad));
g_return_if_fail (buf != NULL);
fdsink = GST_FDSINK (pad->parent);
g_return_if_fail (fdsink->fd >= 0);
if (GST_BUFFER_DATA (buf)) {
DEBUG("writing %d bytes to file descriptor %d\n",GST_BUFFER_SIZE (buf), fdsink->fd);
write (fdsink->fd, GST_BUFFER_DATA (buf), GST_BUFFER_SIZE (buf));
}
gst_buffer_unref (buf);
}
static void
gst_fdsink_set_arg (GtkObject *object, GtkArg *arg, guint id)
{
GstFdSink *fdsink;
/* it's not null if we got it, but it might not be ours */
g_return_if_fail (GST_IS_FDSINK (object));
fdsink = GST_FDSINK (object);
switch(id) {
case ARG_FD:
fdsink->fd = GTK_VALUE_INT (*arg);
break;
default:
break;
}
}
static void
gst_fdsink_get_arg (GtkObject *object, GtkArg *arg, guint id)
{
GstFdSink *fdsink;
/* it's not null if we got it, but it might not be ours */
g_return_if_fail (GST_IS_FDSINK (object));
fdsink = GST_FDSINK (object);
switch(id) {
case ARG_FD:
GTK_VALUE_INT (*arg) = fdsink->fd;
break;
default:
break;
}
}