mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-11-24 02:31:03 +00:00
34ff895040
There can be multiple views per image for different subresource ranges or planes in multi-planer images.
125 lines
3.4 KiB
C
125 lines
3.4 KiB
C
/*
|
|
* GStreamer
|
|
* Copyright (C) 2019 Matthew Waters <matthew@centricular.com>
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Library General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2 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
|
|
* Library General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Library General Public
|
|
* License along with this library; if not, write to the
|
|
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
|
|
* Boston, MA 02110-1301, USA.
|
|
*/
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
#include "config.h"
|
|
#endif
|
|
|
|
#include <gst/vulkan/vulkan.h>
|
|
|
|
/**
|
|
* SECTION:vkimageview
|
|
* @title: GstVulkanImageView
|
|
* @short_description: wrapper for `VkImageView`'s
|
|
* @see_also: #GstVulkanImageMemory
|
|
*
|
|
* #GstVulkanImageView is a wrapper around a `VkImageView` mostly for
|
|
* usage across element boundaries with #GstVulkanImageMemory
|
|
*/
|
|
|
|
#define GST_CAT_DEFUALT GST_CAT_VULKAN_IMAGE_VIEW
|
|
GST_DEBUG_CATEGORY_STATIC (GST_CAT_DEFUALT);
|
|
|
|
static void
|
|
init_debug (void)
|
|
{
|
|
static volatile gsize _init = 0;
|
|
|
|
if (g_once_init_enter (&_init)) {
|
|
GST_DEBUG_CATEGORY_INIT (GST_CAT_VULKAN_IMAGE_VIEW, "vulkanimageview",
|
|
0, "Vulkan Image View");
|
|
g_once_init_leave (&_init, 1);
|
|
}
|
|
}
|
|
|
|
static void
|
|
gst_vulkan_image_view_free (GstVulkanImageView * view)
|
|
{
|
|
GST_CAT_TRACE (GST_CAT_VULKAN_IMAGE_VIEW, "freeing image view:%p ", view);
|
|
|
|
if (view->view)
|
|
vkDestroyImageView (view->device->device, view->view, NULL);
|
|
|
|
if (view->image)
|
|
gst_memory_unref (GST_MEMORY_CAST (view->image));
|
|
view->image = NULL;
|
|
gst_clear_object (&view->device);
|
|
|
|
g_free (view);
|
|
}
|
|
|
|
/**
|
|
* gst_vulkan_image_view_new:
|
|
* @image: a #GstVulkanImageMemory to create the new view from
|
|
* @create_info: the creation information to create the view from
|
|
*
|
|
* Returns: (transfer full): A new #GstVulkanImageView from @image and
|
|
* @create_info
|
|
*/
|
|
GstVulkanImageView *
|
|
gst_vulkan_image_view_new (GstVulkanImageMemory * image,
|
|
VkImageViewCreateInfo * create_info)
|
|
{
|
|
GstVulkanImageView *view;
|
|
GError *error = NULL;
|
|
VkResult err;
|
|
|
|
g_return_val_if_fail (create_info != NULL, NULL);
|
|
g_return_val_if_fail (gst_is_vulkan_image_memory (GST_MEMORY_CAST (image)),
|
|
NULL);
|
|
|
|
init_debug ();
|
|
|
|
view = g_new0 (GstVulkanImageView, 1);
|
|
|
|
gst_mini_object_init ((GstMiniObject *) view, 0,
|
|
gst_vulkan_image_view_get_type (), NULL, NULL,
|
|
(GstMiniObjectFreeFunction) gst_vulkan_image_view_free);
|
|
|
|
err =
|
|
vkCreateImageView (image->device->device, create_info, NULL, &view->view);
|
|
if (gst_vulkan_error_to_g_error (err, &error, "vkImageCreateView") < 0)
|
|
goto vk_error;
|
|
|
|
view->image =
|
|
(GstVulkanImageMemory *) gst_memory_ref (GST_MEMORY_CAST (image));
|
|
view->device = gst_object_ref (image->device);
|
|
view->create_info = *create_info;
|
|
/* we cannot keep this as it may point to stack allocated memory */
|
|
view->create_info.pNext = NULL;
|
|
|
|
return view;
|
|
|
|
vk_error:
|
|
{
|
|
GST_CAT_ERROR (GST_CAT_VULKAN_IMAGE_VIEW,
|
|
"Failed to allocate image memory %s", error->message);
|
|
g_clear_error (&error);
|
|
goto error;
|
|
}
|
|
|
|
error:
|
|
{
|
|
g_free (view);
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
GST_DEFINE_MINI_OBJECT_TYPE (GstVulkanImageView, gst_vulkan_image_view);
|