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/*
 *  gstvaapisurfaceproxy.c - VA surface proxy
 *
 *  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
 */

/**
 * SECTION:gstvaapisurfaceproxy
 * @short_description: VA surface proxy
 */

#include "sysdeps.h"
#include "gstvaapisurfaceproxy.h"
#include "gstvaapiobject_priv.h"

#define DEBUG 1
#include "gstvaapidebug.h"

G_DEFINE_TYPE(GstVaapiSurfaceProxy, gst_vaapi_surface_proxy, G_TYPE_OBJECT);

#define GST_VAAPI_SURFACE_PROXY_GET_PRIVATE(obj)                \
    (G_TYPE_INSTANCE_GET_PRIVATE((obj),                         \
                                 GST_VAAPI_TYPE_SURFACE_PROXY,	\
                                 GstVaapiSurfaceProxyPrivate))

struct _GstVaapiSurfaceProxyPrivate {
    GstVaapiContext    *context;
    GstVaapiSurface    *surface;
    GstClockTime        timestamp;
    guint               is_interlaced   : 1;
    guint               tff             : 1;
};

enum {
    PROP_0,

    PROP_CONTEXT,
    PROP_SURFACE,
    PROP_TIMESTAMP,
    PROP_INTERLACED,
    PROP_TFF
};

static void
gst_vaapi_surface_proxy_finalize(GObject *object)
{
    GstVaapiSurfaceProxy * const proxy = GST_VAAPI_SURFACE_PROXY(object);

    gst_vaapi_surface_proxy_set_surface(proxy, NULL);
    gst_vaapi_surface_proxy_set_context(proxy, NULL);

    G_OBJECT_CLASS(gst_vaapi_surface_proxy_parent_class)->finalize(object);
}

static void
gst_vaapi_surface_proxy_set_property(
    GObject      *object,
    guint         prop_id,
    const GValue *value,
    GParamSpec   *pspec
)
{
    GstVaapiSurfaceProxy * const proxy = GST_VAAPI_SURFACE_PROXY(object);

    switch (prop_id) {
    case PROP_CONTEXT:
        gst_vaapi_surface_proxy_set_context(proxy, g_value_get_pointer(value));
        break;
    case PROP_SURFACE:
        gst_vaapi_surface_proxy_set_surface(proxy, g_value_get_pointer(value));
        break;
    case PROP_TIMESTAMP:
        gst_vaapi_surface_proxy_set_timestamp(proxy, g_value_get_uint64(value));
        break;
    case PROP_INTERLACED:
        gst_vaapi_surface_proxy_set_interlaced(proxy, g_value_get_boolean(value));
        break;
    case PROP_TFF:
        gst_vaapi_surface_proxy_set_tff(proxy, g_value_get_boolean(value));
        break;
    default:
        G_OBJECT_WARN_INVALID_PROPERTY_ID(object, prop_id, pspec);
        break;
    }
}

static void
gst_vaapi_surface_proxy_get_property(
    GObject    *object,
    guint       prop_id,
    GValue     *value,
    GParamSpec *pspec
)
{
    GstVaapiSurfaceProxy * const proxy = GST_VAAPI_SURFACE_PROXY(object);

    switch (prop_id) {
    case PROP_CONTEXT:
        g_value_set_pointer(value, gst_vaapi_surface_proxy_get_context(proxy));
        break;
    case PROP_SURFACE:
        g_value_set_pointer(value, gst_vaapi_surface_proxy_get_surface(proxy));
        break;
    case PROP_TIMESTAMP:
        g_value_set_uint64(value, gst_vaapi_surface_proxy_get_timestamp(proxy));
        break;
    case PROP_INTERLACED:
        g_value_set_boolean(value, gst_vaapi_surface_proxy_get_interlaced(proxy));
        break;
    case PROP_TFF:
        g_value_set_boolean(value, gst_vaapi_surface_proxy_get_tff(proxy));
        break;
    default:
        G_OBJECT_WARN_INVALID_PROPERTY_ID(object, prop_id, pspec);
        break;
    }
}

static void
gst_vaapi_surface_proxy_class_init(GstVaapiSurfaceProxyClass *klass)
{
    GObjectClass * const object_class = G_OBJECT_CLASS(klass);

    g_type_class_add_private(klass, sizeof(GstVaapiSurfaceProxyPrivate));

    object_class->finalize     = gst_vaapi_surface_proxy_finalize;
    object_class->set_property = gst_vaapi_surface_proxy_set_property;
    object_class->get_property = gst_vaapi_surface_proxy_get_property;

    g_object_class_install_property
        (object_class,
         PROP_CONTEXT,
         g_param_spec_pointer("context",
                              "Context",
                              "The context stored in the proxy",
                              G_PARAM_READWRITE));

    g_object_class_install_property
        (object_class,
         PROP_SURFACE,
         g_param_spec_pointer("surface",
                              "Surface",
                              "The surface stored in the proxy",
                              G_PARAM_READWRITE));

    g_object_class_install_property
        (object_class,
         PROP_TIMESTAMP,
         g_param_spec_uint64("timestamp",
                             "Timestamp",
                             "The presentation time of the surface",
                             0, G_MAXUINT64, GST_CLOCK_TIME_NONE,
                             G_PARAM_READWRITE));

    g_object_class_install_property
        (object_class,
         PROP_INTERLACED,
         g_param_spec_boolean("interlaced",
                              "Interlaced",
                              "Flag indicating whether surface is interlaced",
                              FALSE,
                              G_PARAM_READWRITE));

    g_object_class_install_property
        (object_class,
         PROP_TFF,
         g_param_spec_boolean("tff",
                              "Top-Field-First",
                              "Flag indicating for interlaced surfaces whether Top Field is First",
                              FALSE,
                              G_PARAM_READWRITE));
}

static void
gst_vaapi_surface_proxy_init(GstVaapiSurfaceProxy *proxy)
{ 
    GstVaapiSurfaceProxyPrivate *priv;

    priv                = GST_VAAPI_SURFACE_PROXY_GET_PRIVATE(proxy);
    proxy->priv         = priv;
    priv->context       = NULL;
    priv->surface       = NULL;
    priv->timestamp     = GST_CLOCK_TIME_NONE;
    priv->is_interlaced = FALSE;
    priv->tff           = FALSE;
}

/**
 * gst_vaapi_surface_proxy_new:
 * @context: a #GstVaapiContext
 * @surface: a #GstVaapiSurface
 *
 * Creates a new #GstVaapiSurfaceProxy with the specified context and
 * surface.
 *
 * Return value: the newly allocated #GstVaapiSurfaceProxy object
 */
GstVaapiSurfaceProxy *
gst_vaapi_surface_proxy_new(GstVaapiContext *context, GstVaapiSurface *surface)
{
    g_return_val_if_fail(GST_VAAPI_IS_CONTEXT(context), NULL);
    g_return_val_if_fail(GST_VAAPI_IS_SURFACE(surface), NULL);

    return g_object_new(GST_VAAPI_TYPE_SURFACE_PROXY,
                        "context",  context,
                        "surface",  surface,
                        NULL);
}

/**
 * gst_vaapi_surface_proxy_get_context:
 * @proxy: a #GstVaapiSurfaceProxy
 *
 * Returns the #GstVaapiContext stored in the @proxy.
 *
 * Return value: the #GstVaapiContext
 */
GstVaapiContext *
gst_vaapi_surface_proxy_get_context(GstVaapiSurfaceProxy *proxy)
{
    g_return_val_if_fail(GST_VAAPI_IS_SURFACE_PROXY(proxy), NULL);

    return proxy->priv->context;
}

/**
 * gst_vaapi_surface_proxy_set_context:
 * @proxy: a #GstVaapiSurfaceProxy
 * @context: the new #GstVaapiContext to be stored in @proxy
 *
 * Stores a new @context into the @proxy. The proxy releases the
 * previous reference, if any, and then holds a reference to the new
 * @context.
 */
void
gst_vaapi_surface_proxy_set_context(
    GstVaapiSurfaceProxy *proxy,
    GstVaapiContext      *context
)
{
    GstVaapiSurfaceProxyPrivate *priv;

    g_return_if_fail(GST_VAAPI_IS_SURFACE_PROXY(proxy));

    priv = proxy->priv;

    if (priv->context) {
        g_object_unref(priv->context);
        priv->context = NULL;
    }

    if (context)
        priv->context = g_object_ref(context);
}

/**
 * gst_vaapi_surface_proxy_get_surface:
 * @proxy: a #GstVaapiSurfaceProxy
 *
 * Returns the #GstVaapiSurface stored in the @proxy.
 *
 * Return value: the #GstVaapiSurface
 */
GstVaapiSurface *
gst_vaapi_surface_proxy_get_surface(GstVaapiSurfaceProxy *proxy)
{
    g_return_val_if_fail(GST_VAAPI_IS_SURFACE_PROXY(proxy), NULL);

    return proxy->priv->surface;
}

/**
 * gst_vaapi_surface_proxy_get_surface_id:
 * @proxy: a #GstVaapiSurfaceProxy
 *
 * Returns the VA surface ID stored in the @proxy.
 *
 * Return value: the #GstVaapiID
 */
GstVaapiID
gst_vaapi_surface_proxy_get_surface_id(GstVaapiSurfaceProxy *proxy)
{
    g_return_val_if_fail(GST_VAAPI_IS_SURFACE_PROXY(proxy), GST_VAAPI_ID_NONE);
    g_return_val_if_fail(proxy->priv->surface != NULL, GST_VAAPI_ID_NONE);

    return GST_VAAPI_OBJECT_ID(proxy->priv->surface);
}

/**
 * gst_vaapi_surface_proxy_set_surface:
 * @proxy: a #GstVaapiSurfaceProxy
 * @surface: the new #GstVaapiSurface to be stored in @proxy
 *
 * Stores a new @surface into the @proxy. The proxy releases the
 * previous reference, if any, and then holds a reference to the new
 * @surface.
 */
void
gst_vaapi_surface_proxy_set_surface(
    GstVaapiSurfaceProxy *proxy,
    GstVaapiSurface      *surface
)
{
    GstVaapiSurfaceProxyPrivate *priv;

    g_return_if_fail(GST_VAAPI_IS_SURFACE_PROXY(proxy));

    priv = proxy->priv;

    if (priv->surface) {
        if (priv->context)
            gst_vaapi_context_put_surface(priv->context, priv->surface);
        g_object_unref(priv->surface);
        priv->surface = NULL;
    }

    if (surface)
        priv->surface = g_object_ref(surface);
}

/**
 * gst_vaapi_surface_proxy_get_timestamp:
 * @proxy: a #GstVaapiSurfaceProxy
 *
 * Returns the presentation timestamp of the #GstVaapiSurface held by @proxy.
 *
 * Return value: the presentation timestamp of the surface, or
 *   %GST_CLOCK_TIME_NONE is none was set
 */
GstClockTime
gst_vaapi_surface_proxy_get_timestamp(GstVaapiSurfaceProxy *proxy)
{
    g_return_val_if_fail(GST_VAAPI_IS_SURFACE_PROXY(proxy), GST_CLOCK_TIME_NONE);

    return proxy->priv->timestamp;
}

/**
 * gst_vaapi_surface_proxy_set_timestamp:
 * @proxy: a #GstVaapiSurfaceProxy
 * @timestamp: the new presentation timestamp as a #GstClockTime
 *
 * Sets the presentation timestamp of the @proxy surface to @timestamp.
 */
void
gst_vaapi_surface_proxy_set_timestamp(
    GstVaapiSurfaceProxy *proxy,
    GstClockTime          timestamp
)
{
    g_return_if_fail(GST_VAAPI_IS_SURFACE_PROXY(proxy));

    proxy->priv->timestamp = timestamp;
}

/**
 * gst_vaapi_surface_proxy_get_interlaced:
 * @proxy: a #GstVaapiSurfaceProxy
 *
 * Returns whether the @proxy holds an interlaced #GstVaapiSurface or not.
 *
 * Return value: %TRUE if the underlying surface is interlaced, %FALSE
 *     otherwise.
 */
gboolean
gst_vaapi_surface_proxy_get_interlaced(GstVaapiSurfaceProxy *proxy)
{
    g_return_val_if_fail(GST_VAAPI_IS_SURFACE_PROXY(proxy), FALSE);

    return proxy->priv->is_interlaced;
}

/**
 * gst_vaapi_surface_proxy_set_interlaced:
 * @proxy: a #GstVaapiSurfaceProxy
 * @b: a boolean value
 *
 * Sets whether the underlying #GstVaapiSurface for @proxy is interlaced
 * or not.
 */
void
gst_vaapi_surface_proxy_set_interlaced(GstVaapiSurfaceProxy *proxy, gboolean b)
{
    g_return_if_fail(GST_VAAPI_IS_SURFACE_PROXY(proxy));

    proxy->priv->is_interlaced = b;
}

/**
 * gst_vaapi_surface_proxy_get_tff:
 * @proxy: a #GstVaapiSurfaceProxy
 *
 * Returns the TFF flag of the #GstVaapiSurface held by @proxy.
 *
 * Return value: the TFF flag of the surface
 */
gboolean
gst_vaapi_surface_proxy_get_tff(GstVaapiSurfaceProxy *proxy)
{
    g_return_val_if_fail(GST_VAAPI_IS_SURFACE_PROXY(proxy), FALSE);

    return proxy->priv->is_interlaced && proxy->priv->tff;
}

/**
 * gst_vaapi_surface_proxy_set_tff:
 * @proxy: a #GstVaapiSurfaceProxy
 * @tff: the new value of the TFF flag
 *
 * Sets the TFF flag of the @proxy surface to @tff.
 */
void
gst_vaapi_surface_proxy_set_tff(GstVaapiSurfaceProxy *proxy, gboolean tff)
{
    g_return_if_fail(GST_VAAPI_IS_SURFACE_PROXY(proxy));

    proxy->priv->tff = tff;
}