gstreamer/gst-libs/gst/vaapi/gstvaapisurface.c

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/*
* gstvaapisurface.c - VA surface abstraction
*
* Copyright (C) 2010-2011 Splitted-Desktop Systems
* Author: Gwenole Beauchesne <gwenole.beauchesne@splitted-desktop.com>
* Copyright (C) 2011-2013 Intel Corporation
* Author: Gwenole Beauchesne <gwenole.beauchesne@intel.com>
*
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* 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.
*
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* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
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* 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
*/
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/**
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* SECTION:gstvaapisurface
* @short_description: VA surface abstraction
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*/
#include "sysdeps.h"
#include "gstvaapicompat.h"
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#include "gstvaapiutils.h"
#include "gstvaapisurface.h"
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#include "gstvaapisurface_priv.h"
#include "gstvaapicontext.h"
#include "gstvaapiimage.h"
#include "gstvaapiimage_priv.h"
#define DEBUG 1
#include "gstvaapidebug.h"
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);
gst_vaapi_object_unref(subpicture);
}
static void
gst_vaapi_surface_destroy_subpictures(GstVaapiSurface *surface)
{
if (surface->subpictures) {
g_ptr_array_foreach(surface->subpictures, destroy_subpicture_cb,
surface);
g_ptr_array_free(surface->subpictures, TRUE);
surface->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);
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gst_vaapi_surface_set_parent_context(surface, NULL);
if (surface_id != VA_INVALID_SURFACE) {
GST_VAAPI_DISPLAY_LOCK(display);
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status = vaDestroySurfaces(
GST_VAAPI_DISPLAY_VADISPLAY(display),
&surface_id, 1
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);
GST_VAAPI_DISPLAY_UNLOCK(display);
if (!vaapi_check_status(status, "vaDestroySurfaces()"))
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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,
GstVaapiChromaType chroma_type, guint width, guint height)
{
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GstVaapiDisplay * const display = GST_VAAPI_OBJECT_DISPLAY(surface);
VASurfaceID surface_id;
VAStatus status;
guint va_chroma_format;
va_chroma_format = from_GstVaapiChromaType(chroma_type);
if (!va_chroma_format)
goto error_unsupported_chroma_type;
GST_VAAPI_DISPLAY_LOCK(display);
status = vaCreateSurfaces(
GST_VAAPI_DISPLAY_VADISPLAY(display),
width, height, va_chroma_format,
1, &surface_id
);
GST_VAAPI_DISPLAY_UNLOCK(display);
if (!vaapi_check_status(status, "vaCreateSurfaces()"))
return FALSE;
surface->format = GST_VIDEO_FORMAT_UNKNOWN;
surface->chroma_type = chroma_type;
surface->width = width;
surface->height = height;
GST_DEBUG("surface %" GST_VAAPI_ID_FORMAT, GST_VAAPI_ID_ARGS(surface_id));
GST_VAAPI_OBJECT_ID(surface) = surface_id;
return TRUE;
/* ERRORS */
error_unsupported_chroma_type:
GST_ERROR("unsupported chroma-type %u", chroma_type);
return FALSE;
}
static gboolean
gst_vaapi_surface_create_with_format(GstVaapiSurface *surface,
GstVideoFormat format, guint width, guint height)
{
#if VA_CHECK_VERSION(0,34,0)
GstVaapiDisplay * const display = GST_VAAPI_OBJECT_DISPLAY(surface);
VASurfaceID surface_id;
VAStatus status;
guint chroma_type, va_chroma_format;
const VAImageFormat *va_format;
VASurfaceAttrib attrib;
va_format = gst_vaapi_video_format_to_va_format(format);
if (!va_format)
goto error_unsupported_format;
chroma_type = gst_vaapi_video_format_get_chroma_type(format);
if (!chroma_type)
goto error_unsupported_format;
va_chroma_format = from_GstVaapiChromaType(chroma_type);
if (!va_chroma_format)
goto error_unsupported_format;
attrib.flags = VA_SURFACE_ATTRIB_SETTABLE;
attrib.type = VASurfaceAttribPixelFormat;
attrib.value.type = VAGenericValueTypeInteger;
attrib.value.value.i = va_format->fourcc;
GST_VAAPI_DISPLAY_LOCK(display);
status = vaCreateSurfaces(
GST_VAAPI_DISPLAY_VADISPLAY(display),
va_chroma_format, width, height,
&surface_id, 1,
&attrib, 1
);
GST_VAAPI_DISPLAY_UNLOCK(display);
if (!vaapi_check_status(status, "vaCreateSurfaces()"))
return FALSE;
surface->format = format;
surface->chroma_type = chroma_type;
surface->width = width;
surface->height = height;
GST_DEBUG("surface %" GST_VAAPI_ID_FORMAT, GST_VAAPI_ID_ARGS(surface_id));
GST_VAAPI_OBJECT_ID(surface) = surface_id;
return TRUE;
/* ERRORS */
error_unsupported_format:
GST_ERROR("unsupported format %u", gst_vaapi_video_format_to_string(format));
return FALSE;
#else
return FALSE;
#endif
}
#define gst_vaapi_surface_finalize gst_vaapi_surface_destroy
GST_VAAPI_OBJECT_DEFINE_CLASS(GstVaapiSurface, gst_vaapi_surface)
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/**
* 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 *
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gst_vaapi_surface_new(
GstVaapiDisplay *display,
GstVaapiChromaType chroma_type,
guint width,
guint height
)
{
GstVaapiSurface *surface;
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GST_DEBUG("size %ux%u, chroma type 0x%x", width, height, chroma_type);
surface = gst_vaapi_object_new(gst_vaapi_surface_class(), display);
if (!surface)
return NULL;
if (!gst_vaapi_surface_create(surface, chroma_type, width, height))
goto error;
return surface;
error:
gst_vaapi_object_unref(surface);
return NULL;
}
/**
* gst_vaapi_surface_new_with_format:
* @display: a #GstVaapiDisplay
* @format: the surface format
* @width: the requested surface width
* @height: the requested surface height
*
* Creates a new #GstVaapiSurface with the specified pixel format and
* dimensions.
*
* Return value: the newly allocated #GstVaapiSurface object, or %NULL
* if creation of VA surface with explicit pixel format is not
* supported or failed.
*/
GstVaapiSurface *
gst_vaapi_surface_new_with_format(
GstVaapiDisplay *display,
GstVideoFormat format,
guint width,
guint height
)
{
GstVaapiSurface *surface;
GST_DEBUG("size %ux%u, format %s", width, height,
gst_vaapi_video_format_to_string(format));
surface = gst_vaapi_object_new(gst_vaapi_surface_class(), display);
if (!surface)
return NULL;
if (!gst_vaapi_surface_create_with_format(surface, format, width, height))
goto error;
return surface;
error:
gst_vaapi_object_unref(surface);
return 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(surface != NULL, VA_INVALID_SURFACE);
return GST_VAAPI_OBJECT_ID(surface);
}
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/**
* gst_vaapi_surface_get_chroma_type:
* @surface: a #GstVaapiSurface
*
* Returns the #GstVaapiChromaType the @surface was created with.
*
* Return value: the #GstVaapiChromaType
*/
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GstVaapiChromaType
gst_vaapi_surface_get_chroma_type(GstVaapiSurface *surface)
{
g_return_val_if_fail(surface != NULL, 0);
return GST_VAAPI_SURFACE_CHROMA_TYPE(surface);
}
/**
* gst_vaapi_surface_get_format:
* @surface: a #GstVaapiSurface
*
* Returns the #GstVideoFormat the @surface was created with.
*
* Return value: the #GstVideoFormat, or %GST_VIDEO_FORMAT_ENCODED if
* the surface was not created with an explicit video format, or if
* the underlying video format could not be determined
*/
GstVideoFormat
gst_vaapi_surface_get_format(GstVaapiSurface *surface)
{
g_return_val_if_fail(surface != NULL, 0);
/* Try to determine the underlying VA surface format */
if (surface->format == GST_VIDEO_FORMAT_UNKNOWN) {
GstVaapiImage * const image = gst_vaapi_surface_derive_image(surface);
if (image) {
surface->format = GST_VAAPI_IMAGE_FORMAT(image);
gst_vaapi_object_unref(image);
}
if (surface->format == GST_VIDEO_FORMAT_UNKNOWN)
surface->format = GST_VIDEO_FORMAT_ENCODED;
}
return GST_VAAPI_SURFACE_FORMAT(surface);
}
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/**
* gst_vaapi_surface_get_width:
* @surface: a #GstVaapiSurface
*
* Returns the @surface width.
*
* Return value: the surface width, in pixels
*/
guint
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gst_vaapi_surface_get_width(GstVaapiSurface *surface)
{
g_return_val_if_fail(surface != NULL, 0);
return GST_VAAPI_SURFACE_WIDTH(surface);
}
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/**
* gst_vaapi_surface_get_height:
* @surface: a #GstVaapiSurface
*
* Returns the @surface height.
*
* Return value: the surface height, in pixels.
*/
guint
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gst_vaapi_surface_get_height(GstVaapiSurface *surface)
{
g_return_val_if_fail(surface != NULL, 0);
return GST_VAAPI_SURFACE_HEIGHT(surface);
}
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/**
* gst_vaapi_surface_get_size:
* @surface: a #GstVaapiSurface
* @pwidth: return location for the width, or %NULL
* @pheight: return location for the height, or %NULL
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*
* Retrieves the dimensions of a #GstVaapiSurface.
*/
void
gst_vaapi_surface_get_size(
GstVaapiSurface *surface,
guint *pwidth,
guint *pheight
)
{
g_return_if_fail(surface != NULL);
if (pwidth)
*pwidth = GST_VAAPI_SURFACE_WIDTH(surface);
if (pheight)
*pheight = GST_VAAPI_SURFACE_HEIGHT(surface);
}
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/**
* 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
)
{
g_return_if_fail(surface != NULL);
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surface->parent_context = NULL;
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}
/**
* 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(surface != NULL, NULL);
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return surface->parent_context;
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}
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/**
* 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
* gst_vaapi_object_unref().
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*
* 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(surface != NULL, NULL);
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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);
}
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/**
* 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
*/
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gboolean
gst_vaapi_surface_get_image(GstVaapiSurface *surface, GstVaapiImage *image)
{
GstVaapiDisplay *display;
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VAImageID image_id;
VAStatus status;
guint width, height;
g_return_val_if_fail(surface != NULL, FALSE);
g_return_val_if_fail(image != NULL, FALSE);
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display = GST_VAAPI_OBJECT_DISPLAY(surface);
if (!display)
return FALSE;
width = GST_VAAPI_IMAGE_WIDTH(image);
height = GST_VAAPI_IMAGE_HEIGHT(image);
if (width != surface->width || height != surface->height)
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return FALSE;
image_id = GST_VAAPI_OBJECT_ID(image);
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if (image_id == VA_INVALID_ID)
return FALSE;
GST_VAAPI_DISPLAY_LOCK(display);
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status = vaGetImage(
GST_VAAPI_DISPLAY_VADISPLAY(display),
GST_VAAPI_OBJECT_ID(surface),
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0, 0, width, height,
image_id
);
GST_VAAPI_DISPLAY_UNLOCK(display);
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if (!vaapi_check_status(status, "vaGetImage()"))
return FALSE;
return TRUE;
}
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/**
* 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
*/
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gboolean
gst_vaapi_surface_put_image(GstVaapiSurface *surface, GstVaapiImage *image)
{
GstVaapiDisplay *display;
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VAImageID image_id;
VAStatus status;
guint width, height;
g_return_val_if_fail(surface != NULL, FALSE);
g_return_val_if_fail(image != NULL, FALSE);
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display = GST_VAAPI_OBJECT_DISPLAY(surface);
if (!display)
return FALSE;
width = GST_VAAPI_IMAGE_WIDTH(image);
height = GST_VAAPI_IMAGE_HEIGHT(image);
if (width != surface->width || height != surface->height)
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return FALSE;
image_id = GST_VAAPI_OBJECT_ID(image);
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if (image_id == VA_INVALID_ID)
return FALSE;
GST_VAAPI_DISPLAY_LOCK(display);
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status = vaPutImage(
GST_VAAPI_DISPLAY_VADISPLAY(display),
GST_VAAPI_OBJECT_ID(surface),
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image_id,
0, 0, width, height,
0, 0, width, height
);
GST_VAAPI_DISPLAY_UNLOCK(display);
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if (!vaapi_check_status(status, "vaPutImage()"))
return FALSE;
return TRUE;
}
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/**
* 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(surface != NULL, FALSE);
g_return_val_if_fail(subpicture != NULL, FALSE);
if (!surface->subpictures) {
surface->subpictures = g_ptr_array_new();
if (!surface->subpictures)
return FALSE;
}
if (g_ptr_array_remove_fast(surface->subpictures, subpicture)) {
success = _gst_vaapi_surface_deassociate_subpicture(surface,
subpicture);
gst_vaapi_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->subpictures, gst_vaapi_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;
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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;
src_rect_default.width = GST_VAAPI_IMAGE_WIDTH(image);
src_rect_default.height = GST_VAAPI_IMAGE_HEIGHT(image);
}
if (!dst_rect) {
dst_rect = &dst_rect_default;
dst_rect_default.x = 0;
dst_rect_default.y = 0;
dst_rect_default.width = surface->width;
dst_rect_default.height = surface->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,
from_GstVaapiSubpictureFlags(gst_vaapi_subpicture_get_flags(subpicture))
);
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(surface != NULL, FALSE);
g_return_val_if_fail(subpicture != NULL, FALSE);
if (!surface->subpictures)
return TRUE;
/* First, check subpicture was really associated with this surface */
if (!g_ptr_array_remove_fast(surface->subpictures, subpicture)) {
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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);
gst_vaapi_object_unref(subpicture);
return success;
}
gboolean
_gst_vaapi_surface_deassociate_subpicture(
GstVaapiSurface *surface,
GstVaapiSubpicture *subpicture
)
{
GstVaapiDisplay *display;
VASurfaceID surface_id;
VAStatus status;
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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;
}
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/**
* gst_vaapi_surface_sync:
* @surface: a #GstVaapiSurface
*
* Blocks until all pending operations on the @surface have been
* completed.
*
* Return value: %TRUE on success
*/
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gboolean
gst_vaapi_surface_sync(GstVaapiSurface *surface)
{
GstVaapiDisplay *display;
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VAStatus status;
g_return_val_if_fail(surface != NULL, FALSE);
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display = GST_VAAPI_OBJECT_DISPLAY(surface);
if (!display)
return FALSE;
GST_VAAPI_DISPLAY_LOCK(display);
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status = vaSyncSurface(
GST_VAAPI_DISPLAY_VADISPLAY(display),
GST_VAAPI_OBJECT_ID(surface)
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);
GST_VAAPI_DISPLAY_UNLOCK(display);
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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(surface != NULL, 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(surface != NULL, FALSE);
if (propagate_context && surface->parent_context)
return gst_vaapi_context_apply_composition(surface->parent_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);
gst_vaapi_object_unref (subpicture);
return FALSE;
}
gst_vaapi_object_unref (subpicture);
}
return TRUE;
}