gstreamer/plugins/nle/nleurisource.c

166 lines
4.7 KiB
C

/* Gnonlin
* Copyright (C) <2005-2008> Edward Hervey <bilboed@bilboed.com>
*
* 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., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "nle.h"
#include "nleurisource.h"
/**
* SECTION:element-nleurisource
*
* NleURISource is a #NleSource which reads and decodes the contents
* of a given file. The data in the file is decoded using any available
* GStreamer plugins.
*/
static GstStaticPadTemplate nle_urisource_src_template =
GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_SOMETIMES,
GST_STATIC_CAPS_ANY);
GST_DEBUG_CATEGORY_STATIC (nleurisource);
#define GST_CAT_DEFAULT nleurisource
#define _do_init \
GST_DEBUG_CATEGORY_INIT (nleurisource, "nleurisource", GST_DEBUG_FG_BLUE | GST_DEBUG_BOLD, "GNonLin URI Source Element");
#define nle_urisource_parent_class parent_class
G_DEFINE_TYPE_WITH_CODE (NleURISource, nle_urisource, NLE_TYPE_SOURCE,
_do_init);
enum
{
ARG_0,
ARG_URI,
};
static gboolean nle_urisource_prepare (NleObject * object);
static void
nle_urisource_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec);
static void
nle_urisource_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
static void
nle_urisource_class_init (NleURISourceClass * klass)
{
GObjectClass *gobject_class;
NleObjectClass *nleobject_class;
GstElementClass *gstelement_class;
gobject_class = (GObjectClass *) klass;
gstelement_class = (GstElementClass *) klass;
nleobject_class = (NleObjectClass *) klass;
parent_class = g_type_class_ref (NLE_TYPE_SOURCE);
gst_element_class_set_static_metadata (gstelement_class, "GNonLin URI Source",
"Filter/Editor",
"High-level URI Source element", "Edward Hervey <bilboed@bilboed.com>");
gobject_class->set_property = GST_DEBUG_FUNCPTR (nle_urisource_set_property);
gobject_class->get_property = GST_DEBUG_FUNCPTR (nle_urisource_get_property);
g_object_class_install_property (gobject_class, ARG_URI,
g_param_spec_string ("uri", "Uri",
"Uri of the file to use", NULL, G_PARAM_READWRITE));
gst_element_class_add_static_pad_template (gstelement_class,
&nle_urisource_src_template);
nleobject_class->prepare = nle_urisource_prepare;
}
static void
nle_urisource_init (NleURISource * urisource)
{
GstElement *decodebin = NULL;
GST_OBJECT_FLAG_SET (urisource, NLE_OBJECT_SOURCE);
/* We create a bin with source and decodebin within */
decodebin =
gst_element_factory_make ("uridecodebin", "internal-uridecodebin");
g_object_set (decodebin, "expose-all-streams", FALSE, NULL);
gst_bin_add (GST_BIN (urisource), decodebin);
}
static inline void
nle_urisource_set_uri (NleURISource * fs, const gchar * uri)
{
g_object_set (NLE_SOURCE (fs)->element, "uri", uri, NULL);
}
static void
nle_urisource_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
NleURISource *fs = (NleURISource *) object;
switch (prop_id) {
case ARG_URI:
nle_urisource_set_uri (fs, g_value_get_string (value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
nle_urisource_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec)
{
NleURISource *fs = (NleURISource *) object;
switch (prop_id) {
case ARG_URI:
g_object_get_property ((GObject *) NLE_SOURCE (fs)->element, "uri",
value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static gboolean
nle_urisource_prepare (NleObject * object)
{
NleSource *fs = (NleSource *) object;
GST_DEBUG ("prepare");
/* Set the caps on uridecodebin */
if (!gst_caps_is_any (object->caps)) {
GST_DEBUG_OBJECT (object, "Setting uridecodebin caps to %" GST_PTR_FORMAT,
object->caps);
g_object_set (fs->element, "caps", object->caps, NULL);
}
return NLE_OBJECT_CLASS (parent_class)->prepare (object);
}