gstreamer/gst/realmedia/pnmsrc.c

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/* GStreamer
* Copyright (C) <2009> Wim Taymans <wim.taymans@gmail.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., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <string.h>
#include "pnmsrc.h"
GST_DEBUG_CATEGORY_STATIC (pnmsrc_debug);
#define GST_CAT_DEFAULT pnmsrc_debug
/* elementfactory information */
static const GstElementDetails gst_pnm_src_details =
GST_ELEMENT_DETAILS ("PNM packet receiver",
"Source/Network",
"Receive data over the network via PNM",
"Wim Taymans <wim.taymans@gmail.com>");
/* PNMSrc signals and args */
enum
{
/* FILL ME */
LAST_SIGNAL
};
#define DEFAULT_LOCATION NULL
enum
{
PROP_0,
PROP_LOCATION,
PROP_LAST
};
static GstStaticPadTemplate gst_pnm_src_template =
GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("application/vnd.rn-realmedia")
);
static GstFlowReturn gst_pnm_src_create (GstPushSrc * psrc, GstBuffer ** buf);
static void gst_pnm_src_uri_handler_init (gpointer g_iface,
gpointer iface_data);
static void
_do_init (GType pnmsrc_type)
{
static const GInterfaceInfo urihandler_info = {
gst_pnm_src_uri_handler_init,
NULL,
NULL
};
g_type_add_interface_static (pnmsrc_type, GST_TYPE_URI_HANDLER,
&urihandler_info);
}
GST_BOILERPLATE_FULL (GstPNMSrc, gst_pnm_src, GstPushSrc, GST_TYPE_PUSH_SRC,
_do_init);
static void gst_pnm_src_finalize (GObject * object);
static void gst_pnm_src_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec);
static void gst_pnm_src_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
static void
gst_pnm_src_base_init (gpointer klass)
{
GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&gst_pnm_src_template));
gst_element_class_set_details (element_class, &gst_pnm_src_details);
GST_DEBUG_CATEGORY_INIT (pnmsrc_debug, "pnmsrc",
0, "Source for the pnm:// uri");
}
static void
gst_pnm_src_class_init (GstPNMSrcClass * klass)
{
GObjectClass *gobject_class;
GstPushSrcClass *gstpushsrc_class;
gobject_class = (GObjectClass *) klass;
gstpushsrc_class = (GstPushSrcClass *) klass;
parent_class = g_type_class_peek_parent (klass);
gobject_class->set_property = gst_pnm_src_set_property;
gobject_class->get_property = gst_pnm_src_get_property;
gobject_class->finalize = gst_pnm_src_finalize;
g_object_class_install_property (gobject_class, PROP_LOCATION,
g_param_spec_string ("location", "PNM Location",
"Location of the PNM url to read",
DEFAULT_LOCATION, G_PARAM_READWRITE));
gstpushsrc_class->create = gst_pnm_src_create;
}
static void
gst_pnm_src_init (GstPNMSrc * pnmsrc, GstPNMSrcClass * klass)
{
pnmsrc->location = g_strdup (DEFAULT_LOCATION);
}
gboolean
gst_pnm_src_plugin_init (GstPlugin * plugin)
{
return gst_element_register (plugin, "pnmsrc",
GST_RANK_MARGINAL, GST_TYPE_PNM_SRC);
}
static void
gst_pnm_src_finalize (GObject * object)
{
GstPNMSrc *pnmsrc;
pnmsrc = GST_PNM_SRC (object);
g_free (pnmsrc->location);
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static void
gst_pnm_src_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstPNMSrc *src;
src = GST_PNM_SRC (object);
switch (prop_id) {
case PROP_LOCATION:
g_free (src->location);
src->location = g_value_dup_string (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_pnm_src_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec)
{
GstPNMSrc *src;
src = GST_PNM_SRC (object);
switch (prop_id) {
case PROP_LOCATION:
g_value_set_string (value, src->location);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static GstFlowReturn
gst_pnm_src_create (GstPushSrc * psrc, GstBuffer ** buf)
{
GstPNMSrc *src;
GstMessage *m;
gchar *url;
src = GST_PNM_SRC (psrc);
if (src->location == NULL)
return GST_FLOW_ERROR;
url = g_strdup_printf ("rtsp%s", &src->location[3]);
/* the only thing we do is redirect to an RTSP url */
m = gst_message_new_element (GST_OBJECT_CAST (src),
gst_structure_new ("redirect", "new-location", G_TYPE_STRING, url, NULL));
g_free (url);
gst_element_post_message (GST_ELEMENT_CAST (src), m);
return GST_FLOW_UNEXPECTED;
}
/*** GSTURIHANDLER INTERFACE *************************************************/
static GstURIType
gst_pnm_src_uri_get_type (void)
{
return GST_URI_SRC;
}
static gchar **
gst_pnm_src_uri_get_protocols (void)
{
static gchar *protocols[] = { "pnm", NULL };
return protocols;
}
static const gchar *
gst_pnm_src_uri_get_uri (GstURIHandler * handler)
{
GstPNMSrc *src = GST_PNM_SRC (handler);
return src->location;
}
static gboolean
gst_pnm_src_uri_set_uri (GstURIHandler * handler, const gchar * uri)
{
GstPNMSrc *src = GST_PNM_SRC (handler);
if (!g_str_has_prefix (uri, "pnm://"))
return FALSE;
g_free (src->location);
src->location = g_strdup (uri);
return TRUE;
}
static void
gst_pnm_src_uri_handler_init (gpointer g_iface, gpointer iface_data)
{
GstURIHandlerInterface *iface = (GstURIHandlerInterface *) g_iface;
iface->get_type = gst_pnm_src_uri_get_type;
iface->get_protocols = gst_pnm_src_uri_get_protocols;
iface->get_uri = gst_pnm_src_uri_get_uri;
iface->set_uri = gst_pnm_src_uri_set_uri;
}