/*
 *  gstvaapipluginutil.h - VA-API plugins private helper
 *
 *  Copyright (C) 2011-2012 Intel Corporation
 *  Copyright (C) 2011 Collabora
 *    Author: Nicolas Dufresne <nicolas.dufresne@collabora.co.uk>
 *
 *  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_PLUGIN_UTIL_H
#define GST_VAAPI_PLUGIN_UTIL_H

#include <gst/vaapi/gstvaapidisplay.h>
#include <gst/vaapi/gstvaapisurface.h>

G_GNUC_INTERNAL
gboolean
gst_vaapi_ensure_display(
    gpointer             element,
    GstVaapiDisplayType  display_type,
    GstVaapiDisplay    **display
);

G_GNUC_INTERNAL
void
gst_vaapi_set_display(
    const gchar      *type,
    const GValue     *value,
    GstVaapiDisplay **display
);

G_GNUC_INTERNAL
gboolean
gst_vaapi_reply_to_query(GstQuery *query, GstVaapiDisplay *display);

G_GNUC_INTERNAL
gboolean
gst_vaapi_append_surface_caps (GstCaps *out_caps, GstCaps *in_caps);

G_GNUC_INTERNAL
gboolean
gst_vaapi_apply_composition(GstVaapiSurface *surface, GstBuffer *buffer);

#ifndef G_PRIMITIVE_SWAP
#define G_PRIMITIVE_SWAP(type, a, b) do {       \
        const type t = a; a = b; b = t;         \
    } while (0)
#endif

/* Helpers to handle interlaced contents */
#if GST_CHECK_VERSION(1,0,0)
# define GST_CAPS_INTERLACED_MODES \
    "interlace-mode = (string){ progressive, interleaved }"
# define GST_CAPS_INTERLACED_FALSE \
    "interlace-mode = (string)progressive"

static inline void
gst_structure_remove_interlaced_field(GstStructure *structure)
{
    gst_structure_remove_field(structure, "interlace-mode");
}

static inline void
gst_structure_set_interlaced(GstStructure *structure, gboolean interlaced)
{
    gst_structure_set(structure, "interlace-mode",
        G_TYPE_STRING, interlaced ? "interleaved" : "progressive", NULL);
}
#else
# define GST_CAPS_INTERLACED_MODES \
    "interlaced = (boolean){ true, false }"
# define GST_CAPS_INTERLACED_FALSE \
    "interlaced = (boolean)false"

static inline void
gst_structure_remove_interlaced_field(GstStructure *structure)
{
    gst_structure_remove_field(structure, "interlaced");
}

static inline void
gst_structure_set_interlaced(GstStructure *structure, gboolean interlaced)
{
    gst_structure_set(structure, "interlaced",
        G_TYPE_BOOLEAN, interlaced, NULL);
}
#endif

#endif /* GST_VAAPI_PLUGIN_UTIL_H */