/*
 *  gstvaapivideopool_priv.h - Video object pool abstraction (private defs)
 *
 *  Copyright (C) 2010-2011 Splitted-Desktop Systems
 *  Copyright (C) 2012 Intel Corporation
 *
 *  This library is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU Lesser General Public License
 *  as published by the Free Software Foundation; either version 2.1
 *  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
 *  Lesser General Public License for more details.
 *
 *  You should have received a copy of the GNU Lesser General Public
 *  License along with this library; if not, write to the Free
 *  Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 *  Boston, MA 02110-1301 USA
 */

#ifndef GST_VAAPI_VIDEO_POOL_PRIV_H
#define GST_VAAPI_VIDEO_POOL_PRIV_H

#include "gstvaapiminiobject.h"

G_BEGIN_DECLS

#define GST_VAAPI_VIDEO_POOL_CLASS(klass) \
    ((GstVaapiVideoPoolClass *)(klass))

#define GST_VAAPI_IS_VIDEO_POOL_CLASS(klass) \
    ((klass) != NULL)

typedef struct _GstVaapiVideoPoolClass          GstVaapiVideoPoolClass;

/**
 * GstVaapiVideoPool:
 *
 * A pool of lazily allocated video objects. e.g. surfaces, images.
 */
struct _GstVaapiVideoPool {
    /*< private >*/
    GstVaapiMiniObject  parent_instance;

    GstVaapiDisplay    *display;
    GQueue              free_objects;
    GList              *used_objects;
    guint               used_count;
    guint               capacity;
};

/**
 * GstVaapiVideoPoolClass:
 * @alloc_object: virtual function for allocating a video pool object
 *
 * A pool base class used to hold video objects. e.g. surfaces, images.
 */
struct _GstVaapiVideoPoolClass {
    /*< private >*/
    GstVaapiMiniObjectClass parent_class;

    /*< public >*/
    gpointer (*alloc_object)(GstVaapiVideoPool *pool);
};

G_GNUC_INTERNAL
void
gst_vaapi_video_pool_init(GstVaapiVideoPool *pool, GstVaapiDisplay *display);

G_GNUC_INTERNAL
void
gst_vaapi_video_pool_finalize(GstVaapiVideoPool *pool);

/* Internal aliases */

#define gst_vaapi_video_pool_ref_internal(pool) \
    ((gpointer)gst_vaapi_mini_object_ref(GST_VAAPI_MINI_OBJECT(pool)))

#define gst_vaapi_video_pool_unref_internal(pool) \
    gst_vaapi_mini_object_unref(GST_VAAPI_MINI_OBJECT(pool))

#define gst_vaapi_video_pool_replace_internal(old_pool_ptr, new_pool) \
    gst_vaapi_mini_object_replace((GstVaapiMiniObject **)(old_pool_ptr), \
        GST_VAAPI_MINI_OBJECT(new_pool))

#undef  gst_vaapi_video_pool_ref
#define gst_vaapi_video_pool_ref(pool) \
    gst_vaapi_video_pool_ref_internal((pool))

#undef  gst_vaapi_video_pool_unref
#define gst_vaapi_video_pool_unref(pool) \
    gst_vaapi_video_pool_unref_internal((pool))

#undef  gst_vaapi_video_pool_replace
#define gst_vaapi_video_pool_replace(old_pool_ptr, new_pool) \
    gst_vaapi_video_pool_replace_internal((old_pool_ptr), (new_pool))

G_END_DECLS

#endif /* GST_VAAPI_VIDEO_POOL_PRIV_H */