/*
 *  gstvaapicodec_objects.h - VA codec objects abstraction
 *
 *  Copyright (C) 2010-2011 Splitted-Desktop Systems
 *  Copyright (C) 2011-2012 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_CODEC_COMMON_H
#define GST_VAAPI_CODEC_COMMON_H

#include <gst/gstminiobject.h>
#include <gst/vaapi/gstvaapidecoder.h>

G_BEGIN_DECLS

typedef gpointer                                GstVaapiCodecBase;
typedef struct _GstVaapiCodecObject             GstVaapiCodecObject;
typedef struct _GstVaapiCodecObjectClass        GstVaapiCodecObjectClass;
typedef struct _GstVaapiIqMatrix                GstVaapiIqMatrix;
typedef struct _GstVaapiIqMatrixClass           GstVaapiIqMatrixClass;
typedef struct _GstVaapiBitPlane                GstVaapiBitPlane;
typedef struct _GstVaapiBitPlaneClass           GstVaapiBitPlaneClass;

/* ------------------------------------------------------------------------- */
/* --- Base Codec Object                                                 --- */
/* ------------------------------------------------------------------------- */

/* XXX: remove when a common base class for decoder and encoder is available */
#define GST_VAAPI_CODEC_BASE(obj) \
    ((GstVaapiCodecBase *)(obj))

#define GST_VAAPI_TYPE_CODEC_OBJECT \
    (gst_vaapi_codec_object_get_type())

#define GST_VAAPI_CODEC_OBJECT(obj)                             \
    (G_TYPE_CHECK_INSTANCE_CAST((obj),                          \
                                GST_VAAPI_TYPE_CODEC_OBJECT,    \
                                GstVaapiCodecObject))

#define GST_VAAPI_CODEC_OBJECT_CLASS(klass)                     \
    (G_TYPE_CHECK_CLASS_CAST((klass),                           \
                             GST_VAAPI_TYPE_CODEC_OBJECT,       \
                             GstVaapiCodecObjectClass))

#define GST_VAAPI_IS_CODEC_OBJECT(obj) \
    (G_TYPE_CHECK_INSTANCE_TYPE((obj), GST_VAAPI_TYPE_CODEC_OBJECT))

#define GST_VAAPI_IS_CODEC_OBJECT_CLASS(klass) \
    (G_TYPE_CHECK_CLASS_TYPE((klass), GST_VAAPI_TYPE_CODEC_OBJECT))

#define GST_VAAPI_CODEC_OBJECT_GET_CLASS(obj)                   \
    (G_TYPE_INSTANCE_GET_CLASS((obj),                           \
                               GST_VAAPI_TYPE_CODEC_OBJECT,     \
                               GstVaapiCodecObjectClass))

enum {
    GST_VAAPI_CODEC_OBJECT_FLAG_CONSTRUCTED = (GST_MINI_OBJECT_FLAG_LAST << 0),
    GST_VAAPI_CODEC_OBJECT_FLAG_LAST        = (GST_MINI_OBJECT_FLAG_LAST << 1)
};

typedef struct {
    GstVaapiCodecObject        *obj;
    GstVaapiCodecBase          *codec;
    gconstpointer               param;
    guint                       param_size;
    gconstpointer               data;
    guint                       data_size;
    guint                       flags;
} GstVaapiCodecObjectConstructorArgs;

/**
 * GstVaapiCodecObject:
 *
 * A #GstMiniObject holding the base codec object data
 */
struct _GstVaapiCodecObject {
    /*< private >*/
    GstMiniObject               parent_instance;
    GstVaapiCodecBase          *codec;
};

/**
 * GstVaapiCodecObjectClass:
 *
 * The #GstVaapiCodecObject base class.
 */
struct _GstVaapiCodecObjectClass {
    /*< private >*/
    GstMiniObjectClass          parent_class;

    gboolean (*construct)      (GstVaapiCodecObject *obj,
                                const GstVaapiCodecObjectConstructorArgs *args);
};

GType
gst_vaapi_codec_object_get_type(void)
    attribute_hidden;

GstVaapiCodecObject *
gst_vaapi_codec_object_new(
    GType              type,
    GstVaapiCodecBase *codec,
    gconstpointer      param,
    guint              param_size,
    gconstpointer      data,
    guint              data_size
) attribute_hidden;

gboolean
gst_vaapi_codec_object_construct(
    GstVaapiCodecObject                      *obj,
    const GstVaapiCodecObjectConstructorArgs *args
) attribute_hidden;

/* ------------------------------------------------------------------------- */
/* --- Inverse Quantization Matrices                                     --- */
/* ------------------------------------------------------------------------- */

#define GST_VAAPI_TYPE_IQ_MATRIX \
    (gst_vaapi_iq_matrix_get_type())

#define GST_VAAPI_IQ_MATRIX_CAST(obj) \
    ((GstVaapiIqMatrix *)(obj))

#define GST_VAAPI_IQ_MATRIX(obj)                                \
    (G_TYPE_CHECK_INSTANCE_CAST((obj),                          \
                                GST_VAAPI_TYPE_IQ_MATRIX,       \
                                GstVaapiIqMatrix))

#define GST_VAAPI_IQ_MATRIX_CLASS(klass)                        \
    (G_TYPE_CHECK_CLASS_CAST((klass),                           \
                             GST_VAAPI_TYPE_IQ_MATRIX,          \
                             GstVaapiIqMatrixClass))

#define GST_VAAPI_IS_IQ_MATRIX(obj) \
    (G_TYPE_CHECK_INSTANCE_TYPE((obj), GST_VAAPI_TYPE_IQ_MATRIX))

#define GST_VAAPI_IS_IQ_MATRIX_CLASS(klass) \
    (G_TYPE_CHECK_CLASS_TYPE((klass), GST_VAAPI_TYPE_IQ_MATRIX))

#define GST_VAAPI_IQ_MATRIX_GET_CLASS(obj)                      \
    (G_TYPE_INSTANCE_GET_CLASS((obj),                           \
                               GST_VAAPI_TYPE_IQ_MATRIX,        \
                               GstVaapiIqMatrixClass))

/**
 * GstVaapiIqMatrix:
 *
 * A #GstVaapiCodecObject holding an inverse quantization matrix parameter.
 */
struct _GstVaapiIqMatrix {
    /*< private >*/
    GstVaapiCodecObject         parent_instance;
    VABufferID                  param_id;

    /*< public >*/
    gpointer                    param;
};

/**
 * GstVaapiIqMatrixClass:
 *
 * The #GstVaapiIqMatrix base class.
 */
struct _GstVaapiIqMatrixClass {
    /*< private >*/
    GstVaapiCodecObjectClass    parent_class;
};

GType
gst_vaapi_iq_matrix_get_type(void)
    attribute_hidden;

GstVaapiIqMatrix *
gst_vaapi_iq_matrix_new(
    GstVaapiDecoder *decoder,
    gconstpointer    param,
    guint            param_size
) attribute_hidden;

/* ------------------------------------------------------------------------- */
/* --- VC-1 Bit Planes                                                   --- */
/* ------------------------------------------------------------------------- */

#define GST_VAAPI_TYPE_BITPLANE \
    (gst_vaapi_bitplane_get_type())

#define GST_VAAPI_BITPLANE_CAST(obj) \
    ((GstVaapiBitPlane *)(obj))

#define GST_VAAPI_BITPLANE(obj)                                 \
    (G_TYPE_CHECK_INSTANCE_CAST((obj),                          \
                                GST_VAAPI_TYPE_BITPLANE,        \
                                GstVaapiBitPlane))

#define GST_VAAPI_BITPLANE_CLASS(klass)                         \
    (G_TYPE_CHECK_CLASS_CAST((klass),                           \
                             GST_VAAPI_TYPE_BITPLANE,           \
                             GstVaapiBitPlaneClass))

#define GST_VAAPI_IS_BITPLANE(obj) \
    (G_TYPE_CHECK_INSTANCE_TYPE((obj), GST_VAAPI_TYPE_BITPLANE))

#define GST_VAAPI_IS_BITPLANE_CLASS(klass) \
    (G_TYPE_CHECK_CLASS_TYPE((klass), GST_VAAPI_TYPE_BITPLANE))

#define GST_VAAPI_BITPLANE_GET_CLASS(obj)                       \
    (G_TYPE_INSTANCE_GET_CLASS((obj),                           \
                               GST_VAAPI_TYPE_BITPLANE,         \
                               GstVaapiBitPlaneClass))

/**
 * GstVaapiBitPlane:
 *
 * A #GstVaapiCodecObject holding a VC-1 bit plane parameter.
 */
struct _GstVaapiBitPlane {
    /*< private >*/
    GstVaapiCodecObject         parent_instance;
    VABufferID                  data_id;

    /*< public >*/
    guint8                     *data;
};

/**
 * GstVaapiBitPlaneClass:
 *
 * The #GstVaapiBitPlane base class.
 */
struct _GstVaapiBitPlaneClass {
    /*< private >*/
    GstVaapiCodecObjectClass    parent_class;
};

GType
gst_vaapi_bitplane_get_type(void)
    attribute_hidden;

GstVaapiBitPlane *
gst_vaapi_bitplane_new(GstVaapiDecoder *decoder, guint8 *data, guint data_size)
    attribute_hidden;

/* ------------------------------------------------------------------------- */
/* --- Helpers to create codec-dependent objects                         --- */
/* ------------------------------------------------------------------------- */

#define GST_VAAPI_CODEC_DEFINE_TYPE(type, prefix, base_type)            \
G_DEFINE_TYPE(type, prefix, base_type)                                  \
                                                                        \
static void                                                             \
prefix##_destroy(type *);                                               \
                                                                        \
static gboolean                                                         \
prefix##_create(                                                        \
    type *,                                                             \
    const GstVaapiCodecObjectConstructorArgs *args                      \
);                                                                      \
                                                                        \
static void                                                             \
prefix##_finalize(GstMiniObject *object)                                \
{                                                                       \
    GstMiniObjectClass *parent_class;                                   \
                                                                        \
    prefix##_destroy((type *)object);                                   \
                                                                        \
    parent_class = GST_MINI_OBJECT_CLASS(prefix##_parent_class);        \
    if (parent_class->finalize)                                         \
        parent_class->finalize(object);                                 \
}                                                                       \
                                                                        \
static gboolean                                                         \
prefix##_construct(                                                     \
    GstVaapiCodecObject                      *object,                   \
    const GstVaapiCodecObjectConstructorArgs *args                      \
)                                                                       \
{                                                                       \
    GstVaapiCodecObjectClass *parent_class;                             \
                                                                        \
    parent_class = GST_VAAPI_CODEC_OBJECT_CLASS(prefix##_parent_class); \
    if (parent_class->construct) {                                      \
        if (!parent_class->construct(object, args))                     \
            return FALSE;                                               \
    }                                                                   \
    return prefix##_create((type *)object, args);                       \
}                                                                       \
                                                                        \
static void                                                             \
prefix##_class_init(type##Class *klass)                                 \
{                                                                       \
    GstMiniObjectClass * const object_class =                           \
        GST_MINI_OBJECT_CLASS(klass);                                   \
    GstVaapiCodecObjectClass * const codec_class =                      \
        GST_VAAPI_CODEC_OBJECT_CLASS(klass);                            \
                                                                        \
    object_class->finalize = prefix##_finalize;                         \
    codec_class->construct = prefix##_construct;                        \
}

#define GST_VAAPI_IQ_MATRIX_NEW(codec, decoder)                         \
    gst_vaapi_iq_matrix_new(GST_VAAPI_DECODER_CAST(decoder),            \
                            NULL, sizeof(VAIQMatrixBuffer##codec))

#define GST_VAAPI_BITPLANE_NEW(decoder, size) \
    gst_vaapi_bitplane_new(GST_VAAPI_DECODER_CAST(decoder), NULL, size)

G_END_DECLS

#endif /* GST_VAAPI_CODEC_OBJECTS_H */