mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-11-03 16:09:39 +00:00
264 lines
7.2 KiB
C
264 lines
7.2 KiB
C
/* GStreamer
|
|
* Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
|
|
* 2000 Wim Taymans <wtay@chello.be>
|
|
*
|
|
* gstdisksink.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 <gst/gst.h>
|
|
#include "gstdisksink.h"
|
|
|
|
|
|
GstElementDetails gst_disksink_details = {
|
|
"Disk Sink",
|
|
"Sink",
|
|
"Disk hole for data",
|
|
VERSION,
|
|
"Thomas <thomas@apestaart.org>",
|
|
"(C) 2001"
|
|
};
|
|
|
|
|
|
/* DiskSink signals and args */
|
|
enum {
|
|
/* FILL ME */
|
|
SIGNAL_HANDOFF,
|
|
LAST_SIGNAL
|
|
};
|
|
|
|
enum {
|
|
ARG_0,
|
|
ARG_LOCATION,
|
|
};
|
|
|
|
|
|
static void gst_disksink_class_init (GstDiskSinkClass *klass);
|
|
static void gst_disksink_init (GstDiskSink *disksink);
|
|
|
|
static void gst_disksink_set_property (GObject *object, guint prop_id,
|
|
const GValue *value, GParamSpec *pspec);
|
|
static void gst_disksink_get_property (GObject *object, guint prop_id,
|
|
GValue *value, GParamSpec *pspec);
|
|
|
|
static gboolean gst_disksink_open_file (GstDiskSink *sink);
|
|
static void gst_disksink_close_file (GstDiskSink *sink);
|
|
|
|
static void gst_disksink_chain (GstPad *pad,GstBuffer *buf);
|
|
|
|
static GstElementStateReturn gst_disksink_change_state (GstElement *element);
|
|
|
|
static GstElementClass *parent_class = NULL;
|
|
static guint gst_disksink_signals[LAST_SIGNAL] = { 0 };
|
|
|
|
GType
|
|
gst_disksink_get_type (void)
|
|
{
|
|
static GType disksink_type = 0;
|
|
|
|
if (!disksink_type) {
|
|
static const GTypeInfo disksink_info = {
|
|
sizeof(GstDiskSinkClass), NULL,
|
|
NULL,
|
|
(GClassInitFunc)gst_disksink_class_init,
|
|
NULL,
|
|
NULL,
|
|
sizeof(GstDiskSink),
|
|
0,
|
|
(GInstanceInitFunc)gst_disksink_init,
|
|
};
|
|
disksink_type = g_type_register_static (GST_TYPE_ELEMENT, "GstDiskSink", &disksink_info, 0);
|
|
}
|
|
return disksink_type;
|
|
}
|
|
|
|
static void
|
|
gst_disksink_class_init (GstDiskSinkClass *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(G_OBJECT_CLASS(klass), ARG_LOCATION,
|
|
g_param_spec_string("location","location","location",
|
|
NULL,G_PARAM_READWRITE)); // CHECKME!
|
|
|
|
gst_disksink_signals[SIGNAL_HANDOFF] =
|
|
g_signal_new ("handoff", G_TYPE_FROM_CLASS(klass), G_SIGNAL_RUN_LAST,
|
|
G_STRUCT_OFFSET (GstDiskSinkClass, handoff), NULL, NULL,
|
|
g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0);
|
|
|
|
gobject_class->set_property = gst_disksink_set_property;
|
|
gobject_class->get_property = gst_disksink_get_property;
|
|
|
|
gstelement_class->change_state = gst_disksink_change_state;
|
|
}
|
|
|
|
static void
|
|
gst_disksink_init (GstDiskSink *disksink)
|
|
{
|
|
GstPad *pad;
|
|
pad = gst_pad_new ("sink", GST_PAD_SINK);
|
|
gst_element_add_pad (GST_ELEMENT (disksink), pad);
|
|
gst_pad_set_chain_function (pad, gst_disksink_chain);
|
|
|
|
disksink->filename = NULL;
|
|
disksink->file = NULL;
|
|
}
|
|
|
|
static void
|
|
gst_disksink_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec)
|
|
{
|
|
GstDiskSink *sink;
|
|
|
|
/* it's not null if we got it, but it might not be ours */
|
|
sink = GST_DISKSINK (object);
|
|
|
|
switch (prop_id) {
|
|
case ARG_LOCATION:
|
|
/* the element must be stopped or paused in order to do this */
|
|
g_return_if_fail ((GST_STATE (sink) < GST_STATE_PLAYING)
|
|
|| (GST_STATE (sink) == GST_STATE_PAUSED));
|
|
if (sink->filename)
|
|
g_free (sink->filename);
|
|
sink->filename = g_strdup (g_value_get_string (value));
|
|
if ( (GST_STATE (sink) == GST_STATE_PAUSED)
|
|
&& (sink->filename != NULL))
|
|
{
|
|
gst_disksink_close_file (sink);
|
|
gst_disksink_open_file (sink);
|
|
}
|
|
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void
|
|
gst_disksink_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec)
|
|
{
|
|
GstDiskSink *sink;
|
|
|
|
/* it's not null if we got it, but it might not be ours */
|
|
g_return_if_fail (GST_IS_DISKSINK (object));
|
|
|
|
sink = GST_DISKSINK (object);
|
|
|
|
switch (prop_id) {
|
|
case ARG_LOCATION:
|
|
g_value_set_string (value, sink->filename);
|
|
break;
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static gboolean
|
|
gst_disksink_open_file (GstDiskSink *sink)
|
|
{
|
|
g_return_val_if_fail (!GST_FLAG_IS_SET (sink, GST_DISKSINK_OPEN), FALSE);
|
|
|
|
/* open the file */
|
|
sink->file = fopen (sink->filename, "w");
|
|
if (sink->file == NULL) {
|
|
perror ("open");
|
|
gst_element_error (GST_ELEMENT (sink), g_strconcat("opening file \"", sink->filename, "\"", NULL));
|
|
return FALSE;
|
|
}
|
|
|
|
GST_FLAG_SET (sink, GST_DISKSINK_OPEN);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static void
|
|
gst_disksink_close_file (GstDiskSink *sink)
|
|
{
|
|
g_return_if_fail (GST_FLAG_IS_SET (sink, GST_DISKSINK_OPEN));
|
|
|
|
if (fclose (sink->file) != 0)
|
|
{
|
|
perror ("close");
|
|
gst_element_error (GST_ELEMENT (sink), g_strconcat("closing file \"", sink->filename, "\"", NULL));
|
|
}
|
|
else {
|
|
GST_FLAG_UNSET (sink, GST_DISKSINK_OPEN);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* gst_disksink_chain:
|
|
* @pad: the pad this disksink is connected to
|
|
* @buf: the buffer that has to be absorbed
|
|
*
|
|
* take the buffer from the pad and write to file if it's open
|
|
*/
|
|
static void
|
|
gst_disksink_chain (GstPad *pad, GstBuffer *buf)
|
|
{
|
|
GstDiskSink *disksink;
|
|
gint bytes_written = 0;
|
|
|
|
g_return_if_fail (pad != NULL);
|
|
g_return_if_fail (GST_IS_PAD (pad));
|
|
g_return_if_fail (buf != NULL);
|
|
|
|
disksink = GST_DISKSINK (gst_pad_get_parent (pad));
|
|
|
|
if (GST_FLAG_IS_SET (disksink, GST_DISKSINK_OPEN))
|
|
{
|
|
bytes_written = fwrite (GST_BUFFER_DATA (buf), 1, GST_BUFFER_SIZE (buf), disksink->file);
|
|
if (bytes_written < GST_BUFFER_SIZE (buf))
|
|
{
|
|
printf ("disksink : Warning : %d bytes should be written, only %d bytes written\n",
|
|
GST_BUFFER_SIZE (buf), bytes_written);
|
|
}
|
|
}
|
|
gst_buffer_unref (buf);
|
|
|
|
g_signal_emit (G_OBJECT (disksink), gst_disksink_signals[SIGNAL_HANDOFF], 0,
|
|
disksink);
|
|
}
|
|
|
|
static GstElementStateReturn
|
|
gst_disksink_change_state (GstElement *element)
|
|
{
|
|
g_return_val_if_fail (GST_IS_DISKSINK (element), GST_STATE_FAILURE);
|
|
|
|
if (GST_STATE_PENDING (element) == GST_STATE_NULL) {
|
|
if (GST_FLAG_IS_SET (element, GST_DISKSINK_OPEN))
|
|
gst_disksink_close_file (GST_DISKSINK (element));
|
|
} else {
|
|
if (!GST_FLAG_IS_SET (element, GST_DISKSINK_OPEN)) {
|
|
if (!gst_disksink_open_file (GST_DISKSINK (element)))
|
|
return GST_STATE_FAILURE;
|
|
}
|
|
}
|
|
|
|
if (GST_ELEMENT_CLASS (parent_class)->change_state)
|
|
return GST_ELEMENT_CLASS (parent_class)->change_state (element);
|
|
|
|
return GST_STATE_SUCCESS;
|
|
}
|
|
|