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/* GStreamer Push File Source
* Copyright (C) <2007> Tim-Philipp Müller <tim centricular net>
*
* 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.
*/
/**
* SECTION:element-pushfilesrc
* @see_also: filesrc
*
* This element is only useful for debugging purposes. It implements an URI
* protocol handler for the 'pushfile' protocol and behaves like a file source
* element that cannot be activated in pull-mode. This makes it very easy to
* debug demuxers or decoders that can operate both pull and push-based in
* connection with the playbin element (which creates a source based on the
* URI passed).
*
* <refsect2>
* <title>Example launch line</title>
* |[
* gst-launch -m playbin uri=pushfile:///home/you/some/file.ogg
* ]| This plays back the given file using playbin, with the demuxer operating
* push-based.
* </refsect2>
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "gstpushfilesrc.h"
#include <gst/gst.h>
GST_DEBUG_CATEGORY_STATIC (pushfilesrc_debug);
#define GST_CAT_DEFAULT pushfilesrc_debug
static GstStaticPadTemplate srctemplate = GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS_ANY);
static void gst_push_file_src_uri_handler_init (gpointer g_iface,
gpointer iface_data);
static void gst_file_push_src_add_uri_handler (GType type);
GST_BOILERPLATE_FULL (GstPushFileSrc, gst_push_file_src, GstBin, GST_TYPE_BIN,
gst_file_push_src_add_uri_handler);
static void
gst_file_push_src_add_uri_handler (GType type)
{
static const GInterfaceInfo info = {
gst_push_file_src_uri_handler_init,
NULL,
NULL
};
g_type_add_interface_static (type, GST_TYPE_URI_HANDLER, &info);
GST_DEBUG_CATEGORY_INIT (pushfilesrc_debug, "pushfilesrc", 0,
"pushfilesrc element");
}
static void
gst_push_file_src_base_init (gpointer g_class)
{
GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&srctemplate));
gst_element_class_set_details_simple (element_class, "Push File Source",
"Testing",
"Implements pushfile:// URI-handler for push-based file access",
"Tim-Philipp Müller <tim centricular net>");
}
static void
gst_push_file_src_dispose (GObject * obj)
{
GstPushFileSrc *src = GST_PUSH_FILE_SRC (obj);
if (src->srcpad) {
gst_element_remove_pad (GST_ELEMENT (src), src->srcpad);
src->srcpad = NULL;
}
if (src->filesrc) {
gst_bin_remove (GST_BIN (src), src->filesrc);
src->filesrc = NULL;
}
G_OBJECT_CLASS (parent_class)->dispose (obj);
}
static void
gst_push_file_src_class_init (GstPushFileSrcClass * g_class)
{
GObjectClass *gobject_class;
gobject_class = G_OBJECT_CLASS (g_class);
gobject_class->dispose = gst_push_file_src_dispose;
}
static gboolean
gst_push_file_src_ghostpad_checkgetrange (GstPad * pad)
{
return FALSE;
}
static void
gst_push_file_src_init (GstPushFileSrc * src, GstPushFileSrcClass * g_class)
{
src->filesrc = gst_element_factory_make ("filesrc", "real-filesrc");
if (src->filesrc) {
GstPad *pad;
gst_bin_add (GST_BIN (src), src->filesrc);
pad = gst_element_get_static_pad (src->filesrc, "src");
g_assert (pad != NULL);
src->srcpad = gst_ghost_pad_new ("src", pad);
/* FIXME^H^HCORE: try pushfile:///foo/bar.ext ! typefind ! fakesink without
* this and watch core bugginess (some pad stays in flushing state) */
gst_pad_set_checkgetrange_function (src->srcpad,
GST_DEBUG_FUNCPTR (gst_push_file_src_ghostpad_checkgetrange));
gst_element_add_pad (GST_ELEMENT (src), src->srcpad);
gst_object_unref (pad);
}
}
/*** GSTURIHANDLER INTERFACE *************************************************/
static GstURIType
gst_push_file_src_uri_get_type (void)
{
return GST_URI_SRC;
}
static gchar **
gst_push_file_src_uri_get_protocols (void)
{
static gchar *protocols[] = { (char *) "pushfile", NULL };
return protocols;
}
static const gchar *
gst_push_file_src_uri_get_uri (GstURIHandler * handler)
{
GstPushFileSrc *src = GST_PUSH_FILE_SRC (handler);
if (src->filesrc == NULL)
return NULL;
return gst_uri_handler_get_uri (GST_URI_HANDLER (src->filesrc));
}
static gboolean
gst_push_file_src_uri_set_uri (GstURIHandler * handler, const gchar * uri)
{
GstPushFileSrc *src = GST_PUSH_FILE_SRC (handler);
if (src->filesrc == NULL || !g_str_has_prefix (uri, "pushfile://"))
return FALSE;
/* skip 'push' bit */
return gst_uri_handler_set_uri (GST_URI_HANDLER (src->filesrc), uri + 4);
}
static void
gst_push_file_src_uri_handler_init (gpointer g_iface, gpointer iface_data)
{
GstURIHandlerInterface *iface = (GstURIHandlerInterface *) g_iface;
iface->get_type = gst_push_file_src_uri_get_type;
iface->get_protocols = gst_push_file_src_uri_get_protocols;
iface->get_uri = gst_push_file_src_uri_get_uri;
iface->set_uri = gst_push_file_src_uri_set_uri;
}
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