gstreamer/gst-libs/gst/vaapi/gstvaapisubpicture.c
2010-03-19 15:45:21 +00:00

287 lines
7.9 KiB
C

/*
* gstvaapisubpicture.c - VA subpicture abstraction
*
* gstreamer-vaapi (C) 2010 Splitted-Desktop Systems
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
*/
/**
* SECTION:gst-vaapi-subpicture
* @short_description:
*/
#include "config.h"
#include <string.h>
#include "gstvaapiutils.h"
#include "gstvaapisubpicture.h"
#include <va/va_backend.h>
#define DEBUG 1
#include "gstvaapidebug.h"
G_DEFINE_TYPE(GstVaapiSubpicture, gst_vaapi_subpicture, G_TYPE_OBJECT);
#define GST_VAAPI_SUBPICTURE_GET_PRIVATE(obj) \
(G_TYPE_INSTANCE_GET_PRIVATE((obj), \
GST_VAAPI_TYPE_SUBPICTURE, \
GstVaapiSubpicturePrivate))
struct _GstVaapiSubpicturePrivate {
VASubpictureID subpicture_id;
GstVaapiImage *image;
};
enum {
PROP_0,
PROP_SUBPICTURE_ID,
PROP_IMAGE
};
static void
gst_vaapi_subpicture_destroy(GstVaapiSubpicture *subpicture)
{
GstVaapiSubpicturePrivate * const priv = subpicture->priv;
GstVaapiDisplay *display;
VAStatus status;
if (priv->subpicture_id != VA_INVALID_ID) {
display = gst_vaapi_image_get_display(priv->image);
if (display) {
GST_VAAPI_DISPLAY_LOCK(display);
status = vaDestroySubpicture(
GST_VAAPI_DISPLAY_VADISPLAY(display),
priv->subpicture_id
);
GST_VAAPI_DISPLAY_UNLOCK(display);
if (!vaapi_check_status(status, "vaDestroySubpicture()"))
g_warning("failed to destroy subpicture 0x%08x\n",
priv->subpicture_id);
}
priv->subpicture_id = VA_INVALID_ID;
}
if (priv->image) {
g_object_unref(priv->image);
priv->image = NULL;
}
}
static gboolean
gst_vaapi_subpicture_create(GstVaapiSubpicture *subpicture)
{
GstVaapiSubpicturePrivate * const priv = subpicture->priv;
GstVaapiDisplay *display;
VASubpictureID subpicture_id;
VAStatus status;
if (!priv->image)
return FALSE;
display = gst_vaapi_image_get_display(priv->image);
if (!display)
return FALSE;
GST_VAAPI_DISPLAY_LOCK(display);
status = vaCreateSubpicture(
GST_VAAPI_DISPLAY_VADISPLAY(display),
gst_vaapi_image_get_id(priv->image),
&subpicture_id
);
GST_VAAPI_DISPLAY_UNLOCK(display);
if (!vaapi_check_status(status, "vaCreateSubpicture()"))
return FALSE;
priv->subpicture_id = subpicture_id;
return TRUE;
}
static void
gst_vaapi_subpicture_finalize(GObject *object)
{
gst_vaapi_subpicture_destroy(GST_VAAPI_SUBPICTURE(object));
G_OBJECT_CLASS(gst_vaapi_subpicture_parent_class)->finalize(object);
}
static void
gst_vaapi_subpicture_set_property(
GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec
)
{
GstVaapiSubpicture * const subpicture = GST_VAAPI_SUBPICTURE(object);
switch (prop_id) {
case PROP_IMAGE:
gst_vaapi_subpicture_set_image(subpicture, g_value_get_object(value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID(object, prop_id, pspec);
break;
}
}
static void
gst_vaapi_subpicture_get_property(
GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec
)
{
GstVaapiSubpicture * const subpicture = GST_VAAPI_SUBPICTURE(object);
switch (prop_id) {
case PROP_SUBPICTURE_ID:
g_value_set_uint(value, gst_vaapi_subpicture_get_id(subpicture));
break;
case PROP_IMAGE:
g_value_set_object(value, gst_vaapi_subpicture_get_image(subpicture));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID(object, prop_id, pspec);
break;
}
}
static void
gst_vaapi_subpicture_class_init(GstVaapiSubpictureClass *klass)
{
GObjectClass * const object_class = G_OBJECT_CLASS(klass);
g_type_class_add_private(klass, sizeof(GstVaapiSubpicturePrivate));
object_class->finalize = gst_vaapi_subpicture_finalize;
object_class->set_property = gst_vaapi_subpicture_set_property;
object_class->get_property = gst_vaapi_subpicture_get_property;
/**
* GstVaapiSubpicture:id:
*
* The underlying #VASubpictureID of the subpicture.
*/
g_object_class_install_property
(object_class,
PROP_SUBPICTURE_ID,
g_param_spec_uint("id",
"VA subpicture id",
"The underlying VA subpicture id",
0, G_MAXUINT32, VA_INVALID_ID,
G_PARAM_READABLE));
/**
* GstVaapiSubpicture:image:
*
* The #GstVaapiImage this subpicture is bound to.
*/
g_object_class_install_property
(object_class,
PROP_IMAGE,
g_param_spec_object("image",
"Image",
"The GstVaapiImage this subpicture is bound to",
GST_VAAPI_TYPE_IMAGE,
G_PARAM_READWRITE));
}
static void
gst_vaapi_subpicture_init(GstVaapiSubpicture *subpicture)
{
GstVaapiSubpicturePrivate *priv = GST_VAAPI_SUBPICTURE_GET_PRIVATE(subpicture);
subpicture->priv = priv;
priv->subpicture_id = VA_INVALID_ID;
priv->image = NULL;
}
/**
* gst_vaapi_subpicture_new:
* @image: a #GstVaapiImage
*
* Creates a new #GstVaapiSubpicture with @image as source pixels. The
* newly created object holds a reference on @image.
*
* Return value: the newly allocated #GstVaapiSubpicture object
*/
GstVaapiSubpicture *
gst_vaapi_subpicture_new(GstVaapiImage *image)
{
g_return_val_if_fail(GST_VAAPI_IS_IMAGE(image), NULL);
GST_DEBUG("image 0x%08x", gst_vaapi_image_get_id(image));
return g_object_new(GST_VAAPI_TYPE_SUBPICTURE,
"image", image,
NULL);
}
/**
* gst_vaapi_subpicture_get_id:
* @subpicture: a #GstVaapiSubpicture
*
* Returns the underlying VASubpictureID of the @subpicture.
*
* Return value: the underlying VA subpicture id
*/
VASubpictureID
gst_vaapi_subpicture_get_id(GstVaapiSubpicture *subpicture)
{
g_return_val_if_fail(GST_VAAPI_IS_SUBPICTURE(subpicture), VA_INVALID_ID);
return subpicture->priv->subpicture_id;
}
/**
* gst_vaapi_subpicture_get_image:
* @subpicture: a #GstVaapiSubpicture
*
* Returns the #GstVaapiImage this @subpicture is bound to.
*
* Return value: the #GstVaapiImage this @subpicture is bound to
*/
GstVaapiImage *
gst_vaapi_subpicture_get_image(GstVaapiSubpicture *subpicture)
{
g_return_val_if_fail(GST_VAAPI_IS_SUBPICTURE(subpicture), NULL);
return subpicture->priv->image;
}
/**
* gst_vaapi_subpicture_set_image:
* @subpicture: a #GstVaapiSubpicture
* @image: a #GstVaapiImage
*
* Binds a new #GstVaapiImage to the @subpicture. The reference to the
* previous image is released a new one acquired on @image.
*/
void
gst_vaapi_subpicture_set_image(
GstVaapiSubpicture *subpicture,
GstVaapiImage *image
)
{
g_return_if_fail(GST_VAAPI_IS_SUBPICTURE(subpicture));
g_return_if_fail(GST_VAAPI_IS_IMAGE(image));
gst_vaapi_subpicture_destroy(subpicture);
subpicture->priv->image = g_object_ref(image);
gst_vaapi_subpicture_create(subpicture);
}