/* GStreamer

 *

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

 * Copyright (C) 2007-2009 Sebastian Dröge <sebastian.droege@collabora.co.uk>

 * 

 * 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.

 */

/**

 * SECTION:element-giostreamsrc

 * @title: giostreamsrc

 *

 * This plugin reads data from a custom GIO #GInputStream.

 *

 * It can, for example, be used to read data from memory with a

 * #GMemoryInputStream or to read from a file with a

 * #GFileInputStream.

 *

 * ## Example code

 *

 * The following example reads data from a #GMemoryInputStream.

 * |[

#include <gst/gst.h>

#include <gio/gio.h>

...

GstElement *src;

GMemoryInputStream *stream;

// in_data will contain the data to send

guint8 *in_data;

gint i;

...

in_data = g_new (guint8, 512);

for (i = 0; i < 512; i++)

  in_data[i] = i % 256;

stream = G_MEMORY_INPUT_STREAM (g_memory_input_stream_new_from_data (in_data, 512,

          (GDestroyNotify) g_free));

src = gst_element_factory_make ("giostreamsrc", "src");

g_object_set (G_OBJECT (src), "stream", stream, NULL);

...

 * ]|

 *

 */

#ifdef HAVE_CONFIG_H

#include <config.h>

#endif

#include "gstgiostreamsrc.h"

GST_DEBUG_CATEGORY_STATIC (gst_gio_stream_src_debug);

#define GST_CAT_DEFAULT gst_gio_stream_src_debug

enum

{

  PROP_0,

  PROP_STREAM

};

#define gst_gio_stream_src_parent_class parent_class

G_DEFINE_TYPE (GstGioStreamSrc, gst_gio_stream_src, GST_TYPE_GIO_BASE_SRC);

static void gst_gio_stream_src_finalize (GObject * object);

static void gst_gio_stream_src_set_property (GObject * object, guint prop_id,

    const GValue * value, GParamSpec * pspec);

static void gst_gio_stream_src_get_property (GObject * object, guint prop_id,

    GValue * value, GParamSpec * pspec);

static GInputStream *gst_gio_stream_src_get_stream (GstGioBaseSrc * bsrc);

static void

gst_gio_stream_src_class_init (GstGioStreamSrcClass * klass)

{

  GObjectClass *gobject_class = (GObjectClass *) klass;

  GstElementClass *gstelement_class = (GstElementClass *) klass;

  GstGioBaseSrcClass *gstgiobasesrc_class = (GstGioBaseSrcClass *) klass;

  GST_DEBUG_CATEGORY_INIT (gst_gio_stream_src_debug, "gio_stream_src", 0,

      "GIO source");

  gobject_class->finalize = gst_gio_stream_src_finalize;

  gobject_class->set_property = gst_gio_stream_src_set_property;

  gobject_class->get_property = gst_gio_stream_src_get_property;

  g_object_class_install_property (gobject_class, PROP_STREAM,

      g_param_spec_object ("stream", "Stream", "Stream to read from",

          G_TYPE_INPUT_STREAM, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));

  gst_element_class_set_static_metadata (gstelement_class, "GIO stream source",

      "Source",

      "Read from any GIO stream",

      "Sebastian Dröge <sebastian.droege@collabora.co.uk>");

  gstgiobasesrc_class->get_stream =

      GST_DEBUG_FUNCPTR (gst_gio_stream_src_get_stream);

}

static void

gst_gio_stream_src_init (GstGioStreamSrc * src)

{

}

static void

gst_gio_stream_src_finalize (GObject * object)

{

  GstGioStreamSrc *src = GST_GIO_STREAM_SRC (object);

  if (src->stream) {

    g_object_unref (src->stream);

    src->stream = NULL;

  }

  GST_CALL_PARENT (G_OBJECT_CLASS, finalize, (object));

}

static void

gst_gio_stream_src_set_property (GObject * object, guint prop_id,

    const GValue * value, GParamSpec * pspec)

{

  GstGioStreamSrc *src = GST_GIO_STREAM_SRC (object);

  switch (prop_id) {

    case PROP_STREAM:{

      GObject *stream;

      if (GST_STATE (src) == GST_STATE_PLAYING ||

          GST_STATE (src) == GST_STATE_PAUSED) {

        GST_WARNING

            ("Setting a new stream not supported in PLAYING or PAUSED state");

        break;

      }

      stream = g_value_dup_object (value);

      if (src->stream)

        g_object_unref (src->stream);

      src->stream = G_INPUT_STREAM (stream);

      break;

    }

    default:

      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);

      break;

  }

}

static void

gst_gio_stream_src_get_property (GObject * object, guint prop_id,

    GValue * value, GParamSpec * pspec)

{

  GstGioStreamSrc *src = GST_GIO_STREAM_SRC (object);

  switch (prop_id) {

    case PROP_STREAM:

      g_value_set_object (value, src->stream);

      break;

    default:

      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);

      break;

  }

}

static GInputStream *

gst_gio_stream_src_get_stream (GstGioBaseSrc * bsrc)

{

  GstGioStreamSrc *src = GST_GIO_STREAM_SRC (bsrc);

  return (src->stream) ? g_object_ref (src->stream) : NULL;

}