gstqtvideosinkbase.h

/*
    Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies). <qt-info@nokia.com>
    Copyright (C) 2011-2012 Collabora Ltd. <info@collabora.com>

    This library is free software; you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License version 2.1
    as published by the Free Software Foundation.

    This program 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 Lesser General Public License for more details.

    You should have received a copy of the GNU Lesser General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/

/**
 * @file
 *   @brief Extracted from QtGstreamer to avoid overly complex dependency
 *   @author Gus Grubba <mavlink@grubba.com>
 */

#ifndef GST_QT_VIDEO_SINK_BASE_H
#define GST_QT_VIDEO_SINK_BASE_H

#include "gstqtvideosinkplugin.h"
#include <gst/video/gstvideosink.h>

#define GST_TYPE_QT_VIDEO_SINK_BASE \
  (GstQtVideoSinkBase::get_type())
#define GST_QT_VIDEO_SINK_BASE(obj) \
  (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_QT_VIDEO_SINK_BASE, GstQtVideoSinkBase))
#define GST_QT_VIDEO_SINK_BASE_CLASS(klass) \
  (G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_QT_VIDEO_SINK_BASE, GstQtVideoSinkBaseClass))
#define GST_QT_VIDEO_SINK_BASE_GET_CLASS(obj) \
  (G_TYPE_INSTANCE_GET_CLASS ((obj), GST_TYPE_QT_VIDEO_SINK_BASE, GstQtVideoSinkBaseClass))

class QtVideoSinkDelegate;

struct GstQtVideoSinkBase
{
public:
    GstVideoSink parent;

    static GType get_type();

private:
    enum {
        PROP_0,
        PROP_PIXEL_ASPECT_RATIO,
        PROP_FORCE_ASPECT_RATIO,
    };

    static void base_init(gpointer g_class);
    static void class_init(gpointer g_class, gpointer class_data);
    static void init(GTypeInstance *instance, gpointer g_class);
    static void finalize(GObject *object);

    static void set_property(GObject *object, guint prop_id,
                             const GValue *value, GParamSpec *pspec);
    static void get_property(GObject *object, guint prop_id,
                             GValue *value, GParamSpec *pspec);

    static GstStateChangeReturn change_state(GstElement *element, GstStateChange transition);

    static gboolean set_caps(GstBaseSink *sink, GstCaps *caps);

    static GstFlowReturn show_frame(GstVideoSink *sink, GstBuffer *buffer);

public:
    QtVideoSinkDelegate *delegate;

private:
    static GstVideoSinkClass *s_parent_class;
};


struct GstQtVideoSinkBaseClass
{
    GstVideoSinkClass parent_class;
};

#endif