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gstreamer/gst-libs/gst/vaapi/gstvaapisurface.c
Javier Jardón 30024b3f8e libs: use g_clear_object() wherever applicable. 
This is a preferred thread-safe version. Also add an inline version of
g_clear_object() if compiling with glib < 2.28.

Signed-off-by: Gwenole Beauchesne <gwenole.beauchesne@intel.com>
2012-07-19 15:19:17 +02:00

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/*
* gstvaapisurface.c - VA surface abstraction
*
* Copyright (C) 2010-2011 Splitted-Desktop Systems
* Copyright (C) 2011 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:gstvaapisurface
* @short_description: VA surface abstraction
*/
#include "sysdeps.h"
#include "gstvaapicompat.h"
#include "gstvaapiutils.h"
#include "gstvaapisurface.h"
#include "gstvaapisurface_priv.h"
#include "gstvaapicontext.h"
#include "gstvaapiimage.h"
#include "gstvaapi_priv.h"
#define DEBUG 1
#include "gstvaapidebug.h"
G_DEFINE_TYPE(GstVaapiSurface, gst_vaapi_surface, GST_VAAPI_TYPE_OBJECT);
#define GST_VAAPI_SURFACE_GET_PRIVATE(obj) \
(G_TYPE_INSTANCE_GET_PRIVATE((obj), \
GST_VAAPI_TYPE_SURFACE, \
GstVaapiSurfacePrivate))
struct _GstVaapiSurfacePrivate {
guint width;
guint height;
GstVaapiChromaType chroma_type;
GPtrArray *subpictures;
GstVaapiContext *parent_context;
};
enum {
PROP_0,
PROP_WIDTH,
PROP_HEIGHT,
PROP_CHROMA_TYPE,
PROP_PARENT_CONTEXT
};
static gboolean
_gst_vaapi_surface_associate_subpicture(
GstVaapiSurface *surface,
GstVaapiSubpicture *subpicture,
const GstVaapiRectangle *src_rect,
const GstVaapiRectangle *dst_rect
);
static gboolean
_gst_vaapi_surface_deassociate_subpicture(
GstVaapiSurface *surface,
GstVaapiSubpicture *subpicture
);
static void
destroy_subpicture_cb(gpointer subpicture, gpointer surface)
{
_gst_vaapi_surface_deassociate_subpicture(surface, subpicture);
g_object_unref(subpicture);
}
static void
gst_vaapi_surface_destroy_subpictures(GstVaapiSurface *surface)
{
GstVaapiSurfacePrivate * const priv = surface->priv;
if (priv->subpictures) {
g_ptr_array_foreach(priv->subpictures, destroy_subpicture_cb, surface);
g_ptr_array_free(priv->subpictures, TRUE);
priv->subpictures = NULL;
}
}
static void
gst_vaapi_surface_destroy(GstVaapiSurface *surface)
{
GstVaapiDisplay * const display = GST_VAAPI_OBJECT_DISPLAY(surface);
VASurfaceID surface_id;
VAStatus status;
surface_id = GST_VAAPI_OBJECT_ID(surface);
GST_DEBUG("surface %" GST_VAAPI_ID_FORMAT, GST_VAAPI_ID_ARGS(surface_id));
gst_vaapi_surface_destroy_subpictures(surface);
gst_vaapi_surface_set_parent_context(surface, NULL);
if (surface_id != VA_INVALID_SURFACE) {
GST_VAAPI_DISPLAY_LOCK(display);
status = vaDestroySurfaces(
GST_VAAPI_DISPLAY_VADISPLAY(display),
&surface_id, 1
);
GST_VAAPI_DISPLAY_UNLOCK(display);
if (!vaapi_check_status(status, "vaDestroySurfaces()"))
g_warning("failed to destroy surface %" GST_VAAPI_ID_FORMAT,
GST_VAAPI_ID_ARGS(surface_id));
GST_VAAPI_OBJECT_ID(surface) = VA_INVALID_SURFACE;
}
}
static gboolean
gst_vaapi_surface_create(GstVaapiSurface *surface)
{
GstVaapiDisplay * const display = GST_VAAPI_OBJECT_DISPLAY(surface);
GstVaapiSurfacePrivate * const priv = surface->priv;
VASurfaceID surface_id;
VAStatus status;
guint format;
switch (priv->chroma_type) {
case GST_VAAPI_CHROMA_TYPE_YUV420:
format = VA_RT_FORMAT_YUV420;
break;
case GST_VAAPI_CHROMA_TYPE_YUV422:
format = VA_RT_FORMAT_YUV422;
break;
case GST_VAAPI_CHROMA_TYPE_YUV444:
format = VA_RT_FORMAT_YUV444;
break;
default:
GST_DEBUG("unsupported chroma-type %u\n", priv->chroma_type);
return FALSE;
}
GST_VAAPI_DISPLAY_LOCK(display);
status = vaCreateSurfaces(
GST_VAAPI_DISPLAY_VADISPLAY(display),
priv->width,
priv->height,
format,
1, &surface_id
);
GST_VAAPI_DISPLAY_UNLOCK(display);
if (!vaapi_check_status(status, "vaCreateSurfaces()"))
return FALSE;
GST_DEBUG("surface %" GST_VAAPI_ID_FORMAT, GST_VAAPI_ID_ARGS(surface_id));
GST_VAAPI_OBJECT_ID(surface) = surface_id;
return TRUE;
}
static void
gst_vaapi_surface_finalize(GObject *object)
{
gst_vaapi_surface_destroy(GST_VAAPI_SURFACE(object));
G_OBJECT_CLASS(gst_vaapi_surface_parent_class)->finalize(object);
}
static void
gst_vaapi_surface_set_property(
GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec
)
{
GstVaapiSurface * const surface = GST_VAAPI_SURFACE(object);
GstVaapiSurfacePrivate * const priv = surface->priv;
switch (prop_id) {
case PROP_WIDTH:
priv->width = g_value_get_uint(value);
break;
case PROP_HEIGHT:
priv->height = g_value_get_uint(value);
break;
case PROP_CHROMA_TYPE:
priv->chroma_type = g_value_get_uint(value);
break;
case PROP_PARENT_CONTEXT:
gst_vaapi_surface_set_parent_context(surface, g_value_get_object(value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID(object, prop_id, pspec);
break;
}
}
static void
gst_vaapi_surface_get_property(
GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec
)
{
GstVaapiSurface * const surface = GST_VAAPI_SURFACE(object);
switch (prop_id) {
case PROP_WIDTH:
g_value_set_uint(value, gst_vaapi_surface_get_width(surface));
break;
case PROP_HEIGHT:
g_value_set_uint(value, gst_vaapi_surface_get_height(surface));
break;
case PROP_CHROMA_TYPE:
g_value_set_uint(value, gst_vaapi_surface_get_chroma_type(surface));
break;
case PROP_PARENT_CONTEXT:
g_value_set_object(value, gst_vaapi_surface_get_parent_context(surface));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID(object, prop_id, pspec);
break;
}
}
static void
gst_vaapi_surface_constructed(GObject *object)
{
GstVaapiSurface * const surface = GST_VAAPI_SURFACE(object);
GObjectClass *parent_class;
gst_vaapi_surface_create(surface);
parent_class = G_OBJECT_CLASS(gst_vaapi_surface_parent_class);
if (parent_class->constructed)
parent_class->constructed(object);
}
static void
gst_vaapi_surface_class_init(GstVaapiSurfaceClass *klass)
{
GObjectClass * const object_class = G_OBJECT_CLASS(klass);
g_type_class_add_private(klass, sizeof(GstVaapiSurfacePrivate));
object_class->finalize = gst_vaapi_surface_finalize;
object_class->set_property = gst_vaapi_surface_set_property;
object_class->get_property = gst_vaapi_surface_get_property;
object_class->constructed = gst_vaapi_surface_constructed;
g_object_class_install_property
(object_class,
PROP_WIDTH,
g_param_spec_uint("width",
"Width",
"The width of the surface",
0, G_MAXINT32, 0,
G_PARAM_READWRITE|G_PARAM_CONSTRUCT_ONLY));
g_object_class_install_property
(object_class,
PROP_HEIGHT,
g_param_spec_uint("height",
"Height",
"The height of the surface",
0, G_MAXINT32, 0,
G_PARAM_READWRITE|G_PARAM_CONSTRUCT_ONLY));
g_object_class_install_property
(object_class,
PROP_CHROMA_TYPE,
g_param_spec_uint("chroma-type",
"Chroma type",
"The chroma type of the surface",
0, G_MAXUINT32, 0,
G_PARAM_READWRITE|G_PARAM_CONSTRUCT_ONLY));
g_object_class_install_property
(object_class,
PROP_PARENT_CONTEXT,
g_param_spec_object("parent-context",
"Parent Context",
"The parent context, if any",
GST_VAAPI_TYPE_CONTEXT,
G_PARAM_READWRITE|G_PARAM_CONSTRUCT_ONLY));
}
static void
gst_vaapi_surface_init(GstVaapiSurface *surface)
{
GstVaapiSurfacePrivate *priv = GST_VAAPI_SURFACE_GET_PRIVATE(surface);
surface->priv = priv;
priv->width = 0;
priv->height = 0;
priv->chroma_type = 0;
priv->subpictures = NULL;
priv->parent_context = NULL;
}
/**
* gst_vaapi_surface_new:
* @display: a #GstVaapiDisplay
* @chroma_type: the surface chroma format
* @width: the requested surface width
* @height: the requested surface height
*
* Creates a new #GstVaapiSurface with the specified chroma format and
* dimensions.
*
* Return value: the newly allocated #GstVaapiSurface object
*/
GstVaapiSurface *
gst_vaapi_surface_new(
GstVaapiDisplay *display,
GstVaapiChromaType chroma_type,
guint width,
guint height
)
{
GST_DEBUG("size %ux%u, chroma type 0x%x", width, height, chroma_type);
return g_object_new(GST_VAAPI_TYPE_SURFACE,
"display", display,
"id", GST_VAAPI_ID(VA_INVALID_ID),
"width", width,
"height", height,
"chroma-type", chroma_type,
NULL);
}
/**
* gst_vaapi_surface_get_id:
* @surface: a #GstVaapiSurface
*
* Returns the underlying VASurfaceID of the @surface.
*
* Return value: the underlying VA surface id
*/
GstVaapiID
gst_vaapi_surface_get_id(GstVaapiSurface *surface)
{
g_return_val_if_fail(GST_VAAPI_IS_SURFACE(surface), VA_INVALID_SURFACE);
return GST_VAAPI_OBJECT_ID(surface);
}
/**
* gst_vaapi_surface_get_chroma_type:
* @surface: a #GstVaapiSurface
*
* Returns the #GstVaapiChromaType the @surface was created with.
*
* Return value: the #GstVaapiChromaType
*/
GstVaapiChromaType
gst_vaapi_surface_get_chroma_type(GstVaapiSurface *surface)
{
g_return_val_if_fail(GST_VAAPI_IS_SURFACE(surface), 0);
return surface->priv->chroma_type;
}
/**
* gst_vaapi_surface_get_width:
* @surface: a #GstVaapiSurface
*
* Returns the @surface width.
*
* Return value: the surface width, in pixels
*/
guint
gst_vaapi_surface_get_width(GstVaapiSurface *surface)
{
g_return_val_if_fail(GST_VAAPI_IS_SURFACE(surface), 0);
return surface->priv->width;
}
/**
* gst_vaapi_surface_get_height:
* @surface: a #GstVaapiSurface
*
* Returns the @surface height.
*
* Return value: the surface height, in pixels.
*/
guint
gst_vaapi_surface_get_height(GstVaapiSurface *surface)
{
g_return_val_if_fail(GST_VAAPI_IS_SURFACE(surface), 0);
return surface->priv->height;
}
/**
* gst_vaapi_surface_get_size:
* @surface: a #GstVaapiSurface
* @pwidth: return location for the width, or %NULL
* @pheight: return location for the height, or %NULL
*
* Retrieves the dimensions of a #GstVaapiSurface.
*/
void
gst_vaapi_surface_get_size(
GstVaapiSurface *surface,
guint *pwidth,
guint *pheight
)
{
g_return_if_fail(GST_VAAPI_IS_SURFACE(surface));
if (pwidth)
*pwidth = gst_vaapi_surface_get_width(surface);
if (pheight)
*pheight = gst_vaapi_surface_get_height(surface);
}
/**
* gst_vaapi_surface_set_parent_context:
* @surface: a #GstVaapiSurface
* @context: a #GstVaapiContext
*
* Sets new parent context, or clears any parent context if @context
* is %NULL. This function owns an extra reference to the context,
* which will be released when the surface is destroyed.
*/
void
gst_vaapi_surface_set_parent_context(
GstVaapiSurface *surface,
GstVaapiContext *context
)
{
GstVaapiSurfacePrivate *priv;
g_return_if_fail(GST_VAAPI_IS_SURFACE(surface));
priv = surface->priv;
g_clear_object(&priv->parent_context);
if (context)
priv->parent_context = g_object_ref(context);
}
/**
* gst_vaapi_surface_get_parent_context:
* @surface: a #GstVaapiSurface
*
* Retrieves the parent #GstVaapiContext, or %NULL if there is
* none. The surface shall still own a reference to the context.
* i.e. the caller shall not unreference the returned context object.
*
* Return value: the parent context, if any.
*/
GstVaapiContext *
gst_vaapi_surface_get_parent_context(GstVaapiSurface *surface)
{
g_return_val_if_fail(GST_VAAPI_IS_SURFACE(surface), NULL);
return surface->priv->parent_context;
}
/**
* gst_vaapi_surface_derive_image:
* @surface: a #GstVaapiSurface
*
* Derives a #GstVaapiImage from the @surface. This image buffer can
* then be mapped/unmapped for direct CPU access. This operation is
* only possible if the underlying implementation supports direct
* rendering capabilities and internal surface formats that can be
* represented with a #GstVaapiImage.
*
* When the operation is not possible, the function returns %NULL and
* the user should then fallback to using gst_vaapi_surface_get_image()
* or gst_vaapi_surface_put_image() to accomplish the same task in an
* indirect manner (additional copy).
*
* An image created with gst_vaapi_surface_derive_image() should be
* unreferenced when it's no longer needed. The image and image buffer
* data structures will be destroyed. However, the surface contents
* will remain unchanged until destroyed through the last call to
* g_object_unref().
*
* Return value: the newly allocated #GstVaapiImage object, or %NULL
* on failure
*/
GstVaapiImage *
gst_vaapi_surface_derive_image(GstVaapiSurface *surface)
{
GstVaapiDisplay *display;
VAImage va_image;
VAStatus status;
g_return_val_if_fail(GST_VAAPI_IS_SURFACE(surface), NULL);
display = GST_VAAPI_OBJECT_DISPLAY(surface);
va_image.image_id = VA_INVALID_ID;
va_image.buf = VA_INVALID_ID;
GST_VAAPI_DISPLAY_LOCK(display);
status = vaDeriveImage(
GST_VAAPI_DISPLAY_VADISPLAY(display),
GST_VAAPI_OBJECT_ID(surface),
&va_image
);
GST_VAAPI_DISPLAY_UNLOCK(display);
if (!vaapi_check_status(status, "vaDeriveImage()"))
return NULL;
if (va_image.image_id == VA_INVALID_ID || va_image.buf == VA_INVALID_ID)
return NULL;
return gst_vaapi_image_new_with_image(display, &va_image);
}
/**
* gst_vaapi_surface_get_image
* @surface: a #GstVaapiSurface
* @image: a #GstVaapiImage
*
* Retrieves surface data into a #GstVaapiImage. The @image must have
* a format supported by the @surface.
*
* Return value: %TRUE on success
*/
gboolean
gst_vaapi_surface_get_image(GstVaapiSurface *surface, GstVaapiImage *image)
{
GstVaapiDisplay *display;
VAImageID image_id;
VAStatus status;
guint width, height;
g_return_val_if_fail(GST_VAAPI_IS_SURFACE(surface), FALSE);
g_return_val_if_fail(GST_VAAPI_IS_IMAGE(image), FALSE);
display = GST_VAAPI_OBJECT_DISPLAY(surface);
if (!display)
return FALSE;
gst_vaapi_image_get_size(image, &width, &height);
if (width != surface->priv->width || height != surface->priv->height)
return FALSE;
image_id = GST_VAAPI_OBJECT_ID(image);
if (image_id == VA_INVALID_ID)
return FALSE;
GST_VAAPI_DISPLAY_LOCK(display);
status = vaGetImage(
GST_VAAPI_DISPLAY_VADISPLAY(display),
GST_VAAPI_OBJECT_ID(surface),
0, 0, width, height,
image_id
);
GST_VAAPI_DISPLAY_UNLOCK(display);
if (!vaapi_check_status(status, "vaGetImage()"))
return FALSE;
return TRUE;
}
/**
* gst_vaapi_surface_put_image:
* @surface: a #GstVaapiSurface
* @image: a #GstVaapiImage
*
* Copies data from a #GstVaapiImage into a @surface. The @image must
* have a format supported by the @surface.
*
* Return value: %TRUE on success
*/
gboolean
gst_vaapi_surface_put_image(GstVaapiSurface *surface, GstVaapiImage *image)
{
GstVaapiDisplay *display;
VAImageID image_id;
VAStatus status;
guint width, height;
g_return_val_if_fail(GST_VAAPI_IS_SURFACE(surface), FALSE);
g_return_val_if_fail(GST_VAAPI_IS_IMAGE(image), FALSE);
display = GST_VAAPI_OBJECT_DISPLAY(surface);
if (!display)
return FALSE;
gst_vaapi_image_get_size(image, &width, &height);
if (width != surface->priv->width || height != surface->priv->height)
return FALSE;
image_id = GST_VAAPI_OBJECT_ID(image);
if (image_id == VA_INVALID_ID)
return FALSE;
GST_VAAPI_DISPLAY_LOCK(display);
status = vaPutImage(
GST_VAAPI_DISPLAY_VADISPLAY(display),
GST_VAAPI_OBJECT_ID(surface),
image_id,
0, 0, width, height,
0, 0, width, height
);
GST_VAAPI_DISPLAY_UNLOCK(display);
if (!vaapi_check_status(status, "vaPutImage()"))
return FALSE;
return TRUE;
}
/**
* gst_vaapi_surface_associate_subpicture:
* @surface: a #GstVaapiSurface
* @subpicture: a #GstVaapiSubpicture
* @src_rect: the sub-rectangle of the source subpicture
* image to extract and process. If %NULL, the entire image will be used.
* @dst_rect: the sub-rectangle of the destination
* surface into which the image is rendered. If %NULL, the entire
* surface will be used.
*
* Associates the @subpicture with the @surface. The @src_rect
* coordinates and size are relative to the source image bound to
* @subpicture. The @dst_rect coordinates and size are relative to the
* target @surface. Note that the @surface holds an additional
* reference to the @subpicture.
*
* Return value: %TRUE on success
*/
gboolean
gst_vaapi_surface_associate_subpicture(
GstVaapiSurface *surface,
GstVaapiSubpicture *subpicture,
const GstVaapiRectangle *src_rect,
const GstVaapiRectangle *dst_rect
)
{
gboolean success;
g_return_val_if_fail(GST_VAAPI_IS_SURFACE(surface), FALSE);
g_return_val_if_fail(GST_VAAPI_IS_SUBPICTURE(subpicture), FALSE);
if (!surface->priv->subpictures) {
surface->priv->subpictures = g_ptr_array_new();
if (!surface->priv->subpictures)
return FALSE;
}
if (g_ptr_array_remove_fast(surface->priv->subpictures, subpicture)) {
success = _gst_vaapi_surface_deassociate_subpicture(surface, subpicture);
g_object_unref(subpicture);
if (!success)
return FALSE;
}
success = _gst_vaapi_surface_associate_subpicture(
surface,
subpicture,
src_rect,
dst_rect
);
if (!success)
return FALSE;
g_ptr_array_add(surface->priv->subpictures, g_object_ref(subpicture));
return TRUE;
}
gboolean
_gst_vaapi_surface_associate_subpicture(
GstVaapiSurface *surface,
GstVaapiSubpicture *subpicture,
const GstVaapiRectangle *src_rect,
const GstVaapiRectangle *dst_rect
)
{
GstVaapiDisplay *display;
GstVaapiRectangle src_rect_default, dst_rect_default;
GstVaapiImage *image;
VASurfaceID surface_id;
VAStatus status;
display = GST_VAAPI_OBJECT_DISPLAY(surface);
if (!display)
return FALSE;
surface_id = GST_VAAPI_OBJECT_ID(surface);
if (surface_id == VA_INVALID_SURFACE)
return FALSE;
if (!src_rect) {
image = gst_vaapi_subpicture_get_image(subpicture);
if (!image)
return FALSE;
src_rect = &src_rect_default;
src_rect_default.x = 0;
src_rect_default.y = 0;
gst_vaapi_image_get_size(
image,
&src_rect_default.width,
&src_rect_default.height
);
}
if (!dst_rect) {
dst_rect = &dst_rect_default;
dst_rect_default.x = 0;
dst_rect_default.y = 0;
dst_rect_default.width = surface->priv->width;
dst_rect_default.height = surface->priv->height;
}
GST_VAAPI_DISPLAY_LOCK(display);
status = vaAssociateSubpicture(
GST_VAAPI_DISPLAY_VADISPLAY(display),
GST_VAAPI_OBJECT_ID(subpicture),
&surface_id, 1,
src_rect->x, src_rect->y, src_rect->width, src_rect->height,
dst_rect->x, dst_rect->y, dst_rect->width, dst_rect->height,
0
);
GST_VAAPI_DISPLAY_UNLOCK(display);
if (!vaapi_check_status(status, "vaAssociateSubpicture()"))
return FALSE;
return TRUE;
}
/**
* gst_vaapi_surface_deassociate_subpicture:
* @surface: a #GstVaapiSurface
* @subpicture: a #GstVaapiSubpicture
*
* Deassociates @subpicture from @surface. Other associations are kept.
*
* Return value: %TRUE on success
*/
gboolean
gst_vaapi_surface_deassociate_subpicture(
GstVaapiSurface *surface,
GstVaapiSubpicture *subpicture
)
{
gboolean success;
g_return_val_if_fail(GST_VAAPI_IS_SURFACE(surface), FALSE);
g_return_val_if_fail(GST_VAAPI_IS_SUBPICTURE(subpicture), FALSE);
if (!surface->priv->subpictures)
return TRUE;
/* First, check subpicture was really associated with this surface */
if (!g_ptr_array_remove_fast(surface->priv->subpictures, subpicture)) {
GST_DEBUG("subpicture %" GST_VAAPI_ID_FORMAT " was not bound to "
"surface %" GST_VAAPI_ID_FORMAT,
GST_VAAPI_ID_ARGS(GST_VAAPI_OBJECT_ID(subpicture)),
GST_VAAPI_ID_ARGS(GST_VAAPI_OBJECT_ID(surface)));
return TRUE;
}
success = _gst_vaapi_surface_deassociate_subpicture(surface, subpicture);
g_object_unref(subpicture);
return success;
}
gboolean
_gst_vaapi_surface_deassociate_subpicture(
GstVaapiSurface *surface,
GstVaapiSubpicture *subpicture
)
{
GstVaapiDisplay *display;
VASurfaceID surface_id;
VAStatus status;
display = GST_VAAPI_OBJECT_DISPLAY(surface);
if (!display)
return FALSE;
surface_id = GST_VAAPI_OBJECT_ID(surface);
if (surface_id == VA_INVALID_SURFACE)
return FALSE;
GST_VAAPI_DISPLAY_LOCK(display);
status = vaDeassociateSubpicture(
GST_VAAPI_DISPLAY_VADISPLAY(display),
GST_VAAPI_OBJECT_ID(subpicture),
&surface_id, 1
);
GST_VAAPI_DISPLAY_UNLOCK(display);
if (!vaapi_check_status(status, "vaDeassociateSubpicture()"))
return FALSE;
return TRUE;
}
/**
* gst_vaapi_surface_sync:
* @surface: a #GstVaapiSurface
*
* Blocks until all pending operations on the @surface have been
* completed.
*
* Return value: %TRUE on success
*/
gboolean
gst_vaapi_surface_sync(GstVaapiSurface *surface)
{
GstVaapiDisplay *display;
VAStatus status;
g_return_val_if_fail(GST_VAAPI_IS_SURFACE(surface), FALSE);
display = GST_VAAPI_OBJECT_DISPLAY(surface);
if (!display)
return FALSE;
GST_VAAPI_DISPLAY_LOCK(display);
status = vaSyncSurface(
GST_VAAPI_DISPLAY_VADISPLAY(display),
GST_VAAPI_OBJECT_ID(surface)
);
GST_VAAPI_DISPLAY_UNLOCK(display);
if (!vaapi_check_status(status, "vaSyncSurface()"))
return FALSE;
return TRUE;
}
/**
* gst_vaapi_surface_query_status:
* @surface: a #GstVaapiSurface
* @pstatus: return location for the #GstVaapiSurfaceStatus
*
* Finds out any pending operations on the @surface. The
* #GstVaapiSurfaceStatus flags are returned into @pstatus.
*
* Return value: %TRUE on success
*/
gboolean
gst_vaapi_surface_query_status(
GstVaapiSurface *surface,
GstVaapiSurfaceStatus *pstatus
)
{
VASurfaceStatus surface_status;
VAStatus status;
g_return_val_if_fail(GST_VAAPI_IS_SURFACE(surface), FALSE);
GST_VAAPI_OBJECT_LOCK_DISPLAY(surface);
status = vaQuerySurfaceStatus(
GST_VAAPI_OBJECT_VADISPLAY(surface),
GST_VAAPI_OBJECT_ID(surface),
&surface_status
);
GST_VAAPI_OBJECT_UNLOCK_DISPLAY(surface);
if (!vaapi_check_status(status, "vaQuerySurfaceStatus()"))
return FALSE;
if (pstatus)
*pstatus = to_GstVaapiSurfaceStatus(surface_status);
return TRUE;
}
/**
* gst_vaapi_surface_set_subpictures_from_composition:
* @surface: a #GstVaapiSurface
* @compostion: a #GstVideoOverlayCompositon
* @propagate_context: a flag specifying whether to apply composition
* to the parent context, if any
*
* Helper to update the subpictures from #GstVideoOverlayCompositon. Sending
* a NULL composition will clear all the current subpictures. Note that this
* method will clear existing subpictures.
*
* Return value: %TRUE on success
*/
gboolean
gst_vaapi_surface_set_subpictures_from_composition(
GstVaapiSurface *surface,
GstVideoOverlayComposition *composition,
gboolean propagate_context
)
{
GstVaapiDisplay *display;
guint n, nb_rectangles;
g_return_val_if_fail(GST_VAAPI_IS_SURFACE(surface), FALSE);
if (propagate_context) {
GstVaapiContext * const context = surface->priv->parent_context;
if (context)
return gst_vaapi_context_apply_composition(context, composition);
}
display = GST_VAAPI_OBJECT_DISPLAY(surface);
if (!display)
return FALSE;
/* Clear current subpictures */
gst_vaapi_surface_destroy_subpictures(surface);
if (!composition)
return TRUE;
nb_rectangles = gst_video_overlay_composition_n_rectangles (composition);
/* Overlay all the rectangles cantained in the overlay composition */
for (n = 0; n < nb_rectangles; ++n) {
GstVideoOverlayRectangle *rect;
GstVaapiRectangle sub_rect;
GstVaapiSubpicture *subpicture;
rect = gst_video_overlay_composition_get_rectangle (composition, n);
subpicture = gst_vaapi_subpicture_new_from_overlay_rectangle (display,
rect);
gst_video_overlay_rectangle_get_render_rectangle (rect,
(gint *)&sub_rect.x, (gint *)&sub_rect.y,
&sub_rect.width, &sub_rect.height);
if (!gst_vaapi_surface_associate_subpicture (surface, subpicture,
NULL, &sub_rect)) {
GST_WARNING ("could not render overlay rectangle %p", rect);
g_object_unref (subpicture);
return FALSE;
}
g_object_unref (subpicture);
}
return TRUE;
}
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