gstreamer/gst/elements/gstfdsink.c

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/* 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.
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include "gstfdsink.h"
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
static GstStaticPadTemplate sinktemplate = GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS_ANY);
GST_DEBUG_CATEGORY_STATIC (gst_fdsink_debug);
#define GST_CAT_DEFAULT gst_fdsink_debug
GstElementDetails gst_fdsink_details =
GST_ELEMENT_DETAILS ("Filedescriptor Sink",
"Sink/File",
"Write data to a file descriptor",
"Erik Walthinsen <omega@cse.ogi.edu>");
/* FdSink signals and args */
enum
{
/* FILL ME */
LAST_SIGNAL
};
enum
{
ARG_0,
ARG_FD
};
#define _do_init(bla) \
GST_DEBUG_CATEGORY_INIT (gst_fdsink_debug, "fdsink", 0, "fdsink element");
GST_BOILERPLATE_FULL (GstFdSink, gst_fdsink, GstElement, GST_TYPE_ELEMENT,
_do_init);
static void gst_fdsink_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec);
static void gst_fdsink_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
static void gst_fdsink_chain (GstPad * pad, GstData * _data);
static void
gst_fdsink_base_init (gpointer g_class)
{
GstElementClass *gstelement_class = GST_ELEMENT_CLASS (g_class);
gst_element_class_add_pad_template (gstelement_class,
gst_static_pad_template_get (&sinktemplate));
gst_element_class_set_details (gstelement_class, &gst_fdsink_details);
}
static void
gst_fdsink_class_init (GstFdSinkClass * klass)
{
GObjectClass *gobject_class;
gobject_class = G_OBJECT_CLASS (klass);
gobject_class->set_property = gst_fdsink_set_property;
gobject_class->get_property = gst_fdsink_get_property;
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_FD,
g_param_spec_int ("fd", "fd", "An open file descriptor to write to",
0, G_MAXINT, 1, G_PARAM_READWRITE));
}
static void
gst_fdsink_init (GstFdSink * fdsink)
{
fdsink->sinkpad =
gst_pad_new_from_template (gst_static_pad_template_get (&sinktemplate),
"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, GstData * _data)
{
GstBuffer *buf = GST_BUFFER (_data);
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 (gst_pad_get_parent (pad));
g_return_if_fail (fdsink->fd >= 0);
if (GST_BUFFER_DATA (buf)) {
GST_DEBUG ("writing %d bytes to file descriptor %d", 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_property (GObject * object, guint prop_id, const GValue * value,
GParamSpec * pspec)
{
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 (prop_id) {
case ARG_FD:
fdsink->fd = g_value_get_int (value);
break;
default:
break;
}
}
static void
gst_fdsink_get_property (GObject * object, guint prop_id, GValue * value,
GParamSpec * pspec)
{
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 (prop_id) {
case ARG_FD:
g_value_set_int (value, fdsink->fd);
break;
default:
break;
}
}