/* GStreamer

 * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>

 * Copyright (C) <2003> David Schleef <ds@schleef.org>

 * Copyright (C) <2006> Julien Moutte <julien@moutte.net>

 * Copyright (C) <2006> Zeeshan Ali <zeeshan.ali@nokia.com>

 * Copyright (C) <2006-2008> Tim-Philipp Müller <tim centricular net>

 * Copyright (C) <2009> Young-Ho Cha <ganadist@gmail.com>

 * Copyright (C) <2011> 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-textoverlay

 * @title: textoverlay

 * @see_also: #GstTextRender, #GstTextOverlay, #GstTimeOverlay, #GstSubParse

 *

 * This plugin renders text on top of a video stream. This can be either

 * static text or text from buffers received on the text sink pad, e.g.

 * as produced by the subparse element. If the text sink pad is not linked,

 * the text set via the "text" property will be rendered. If the text sink

 * pad is linked, text will be rendered as it is received on that pad,

 * honouring and matching the buffer timestamps of both input streams.

 *

 * The text can contain newline characters and text wrapping is enabled by

 * default.

 *

 * ## Example launch lines

 * |[

 * gst-launch-1.0 -v videotestsrc ! textoverlay text="Room A" valignment=top halignment=left font-desc="Sans, 72" ! autovideosink

 * ]|

 * Here is a simple pipeline that displays a static text in the top left

 * corner of the video picture

 * |[

 * gst-launch-1.0 -v filesrc location=subtitles.srt ! subparse ! txt.   videotestsrc ! timeoverlay ! textoverlay name=txt shaded-background=yes ! autovideosink

 * ]|

 * Here is another pipeline that displays subtitles from an .srt subtitle

 * file, centered at the bottom of the picture and with a rectangular shading

 * around the text in the background:

 *

 * If you do not have such a subtitle file, create one looking like this

 * in a text editor:

 * |[

 * 1

 * 00:00:03,000 --> 00:00:05,000

 * Hello? (3-5s)

 *

 * 2

 * 00:00:08,000 --> 00:00:13,000

 * Yes, this is a subtitle. Don't

 * you like it? (8-13s)

 *

 * 3

 * 00:00:18,826 --> 00:01:02,886

 * Uh? What are you talking about?

 * I don't understand  (18-62s)

 * ]|

 *

 */

#ifdef HAVE_CONFIG_H

#include "config.h"

#endif

#include <gsttextoverlay.h>

static GstStaticPadTemplate text_sink_template_factory =

GST_STATIC_PAD_TEMPLATE ("text_sink",

    GST_PAD_SINK,

    GST_PAD_ALWAYS,

    GST_STATIC_CAPS ("text/x-raw, format = { pango-markup, utf8 }")

    );

G_DEFINE_TYPE (GstTextOverlay, gst_text_overlay, GST_TYPE_BASE_TEXT_OVERLAY);

static void

gst_text_overlay_class_init (GstTextOverlayClass * klass)

{

  GstElementClass *element_class = (GstElementClass *) klass;

  gst_element_class_add_static_pad_template (element_class,

      &text_sink_template_factory);

  gst_element_class_set_static_metadata (element_class, "Text overlay",

      "Filter/Editor/Video",

      "Adds text strings on top of a video buffer",

      "David Schleef <ds@schleef.org>, " "Zeeshan Ali <zeeshan.ali@nokia.com>");

}

static void

gst_text_overlay_init (GstTextOverlay * overlay)

{

}