/* GStreamer

 *

 * Copyright (C) 2007 Rene Stadler <mail@renestadler.de>

 * Copyright (C) 2007 Sebastian Dröge <slomo@circular-chaos.org>

 * 

 * 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-giosrc

 * @short_description: Read from any GIO-supported location

 * @see_also: #GstFileSrc, #GstGnomeVFSSrc, #GstGioSink

 *

 * <refsect2>

 * <para>

 * This plugin reads data from a local or remote location specified

 * by an URI. This location can be specified using any protocol supported by

 * the GIO library or it's VFS backends. Common protocols are 'file', 'http',

 * 'ftp', or 'smb'.

 * </para>

 * <para>

 * Example pipeline:

 * <programlisting>

 * gst-launch -v giosrc location=file:///home/joe/foo.xyz ! fakesink

 * </programlisting>

 * The above pipeline will simply read a local file and do nothing with the

 * data read. Instead of giosrc, we could just as well have used the

 * filesrc element here.

 * </para>

 * <para>

 * Another example pipeline:

 * <programlisting>

 * gst-launch -v giosrc location=smb://othercomputer/foo.xyz ! filesink location=/home/joe/foo.xyz

 * </programlisting>

 * The above pipeline will copy a file from a remote host to the local file

 * system using the Samba protocol.

 * </para>

 * <para>

 * Yet another example pipeline:

 * <programlisting>

 * gst-launch -v giosrc location=http://music.foobar.com/demo.mp3 ! mad ! audioconvert ! audioresample ! alsasink

 * </programlisting>

 * The above pipeline will read and decode and play an mp3 file from a

 * web server using the http protocol.

 * </para>

 * </refsect2>

 */

/* FIXME: We would like to mount the enclosing volume of an URL

 *        if it isn't mounted yet but this is possible async-only.

 *        Unfortunately this requires a running main loop from the

 *        default context and we can't guarantuee this!

 *

 *        We would also like to do authentication while mounting.

 */

#ifdef HAVE_CONFIG_H

#include <config.h>

#endif

#include "gstgiosrc.h"

GST_DEBUG_CATEGORY_STATIC (gst_gio_src_debug);

#define GST_CAT_DEFAULT gst_gio_src_debug

enum

{

  ARG_0,

  ARG_LOCATION

};

GST_BOILERPLATE_FULL (GstGioSrc, gst_gio_src, GstGioBaseSrc,

    GST_TYPE_GIO_BASE_SRC, gst_gio_uri_handler_do_init);

static void gst_gio_src_finalize (GObject * object);

static void gst_gio_src_set_property (GObject * object, guint prop_id,

    const GValue * value, GParamSpec * pspec);

static void gst_gio_src_get_property (GObject * object, guint prop_id,

    GValue * value, GParamSpec * pspec);

static gboolean gst_gio_src_start (GstBaseSrc * base_src);

static void

gst_gio_src_base_init (gpointer gclass)

{

  static GstElementDetails element_details = {

    "GIO source",

    "Source/File",

    "Read from any GIO-supported location",

    "Ren\xc3\xa9 Stadler <mail@renestadler.de>, "

        "Sebastian Dröge <slomo@circular-chaos.org>"

  };

  GstElementClass *element_class = GST_ELEMENT_CLASS (gclass);

  GST_DEBUG_CATEGORY_INIT (gst_gio_src_debug, "gio_src", 0, "GIO source");

  gst_element_class_set_details (element_class, &element_details);

}

static void

gst_gio_src_class_init (GstGioSrcClass * klass)

{

  GObjectClass *gobject_class;

  GstElementClass *gstelement_class;

  GstBaseSrcClass *gstbasesrc_class;

  gobject_class = (GObjectClass *) klass;

  gstelement_class = (GstElementClass *) klass;

  gstbasesrc_class = (GstBaseSrcClass *) klass;

  gobject_class->finalize = gst_gio_src_finalize;

  gobject_class->set_property = gst_gio_src_set_property;

  gobject_class->get_property = gst_gio_src_get_property;

  g_object_class_install_property (gobject_class, ARG_LOCATION,

      g_param_spec_string ("location", "Location", "URI location to read from",

          NULL, G_PARAM_READWRITE));

  gstbasesrc_class->start = GST_DEBUG_FUNCPTR (gst_gio_src_start);

}

static void

gst_gio_src_init (GstGioSrc * src, GstGioSrcClass * gclass)

{

}

static void

gst_gio_src_finalize (GObject * object)

{

  GstGioSrc *src = GST_GIO_SRC (object);

  if (src->location) {

    g_free (src->location);

    src->location = NULL;

  }

  GST_CALL_PARENT (G_OBJECT_CLASS, finalize, (object));

}

static void

gst_gio_src_set_property (GObject * object, guint prop_id,

    const GValue * value, GParamSpec * pspec)

{

  GstGioSrc *src = GST_GIO_SRC (object);

  switch (prop_id) {

    case ARG_LOCATION:

      if (GST_STATE (src) == GST_STATE_PLAYING ||

          GST_STATE (src) == GST_STATE_PAUSED)

        break;

      g_free (src->location);

      src->location = g_strdup (g_value_get_string (value));

      break;

    default:

      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);

      break;

  }

}

static void

gst_gio_src_get_property (GObject * object, guint prop_id,

    GValue * value, GParamSpec * pspec)

{

  GstGioSrc *src = GST_GIO_SRC (object);

  switch (prop_id) {

    case ARG_LOCATION:

      g_value_set_string (value, src->location);

      break;

    default:

      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);

      break;

  }

}

static gboolean

gst_gio_src_start (GstBaseSrc * base_src)

{

  GstGioSrc *src = GST_GIO_SRC (base_src);

  GFile *file;

  GError *err = NULL;

  GInputStream *stream;

  GCancellable *cancel = GST_GIO_BASE_SRC (src)->cancel;

  if (src->location == NULL) {

    GST_ELEMENT_ERROR (src, RESOURCE, OPEN_READ, (NULL), ("No location given"));

    return FALSE;

  }

  file = g_file_new_for_uri (src->location);

  if (file == NULL) {

    GST_ELEMENT_ERROR (src, RESOURCE, OPEN_READ, (NULL),

        ("Malformed URI or protocol not supported (%s)", src->location));

    return FALSE;

  }

  stream = G_INPUT_STREAM (g_file_read (file, cancel, &err));

  g_object_unref (file);

  if (stream == NULL && !gst_gio_error (src, "g_file_read", &err, NULL)) {

    if (GST_GIO_ERROR_MATCHES (err, NOT_FOUND)) {

      GST_ELEMENT_ERROR (src, RESOURCE, NOT_FOUND, (NULL),

          ("Could not open location %s for reading: %s",

              src->location, err->message));

    } else {

      GST_ELEMENT_ERROR (src, RESOURCE, OPEN_READ, (NULL),

          ("Could not open location %s for reading: %s",

              src->location, err->message));

    }

    g_clear_error (&err);

    return FALSE;

  } else if (stream == NULL) {

    return FALSE;

  }

  gst_gio_base_src_set_stream (GST_GIO_BASE_SRC (src), stream);

  GST_DEBUG_OBJECT (src, "opened location %s", src->location);

  return GST_BASE_SRC_CLASS (parent_class)->start (base_src);

}