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/*
* 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, #GstVulkanDevice
*
* #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 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);
}
}
extern void
gst_vulkan_image_memory_release_view (GstVulkanImageMemory * image,
GstVulkanImageView * view);
static gboolean
gst_vulkan_image_view_dispose (GstVulkanImageView * view)
{
GstVulkanImageMemory *image;
if ((image = view->image) == NULL)
return TRUE;
gst_vulkan_image_view_ref (view);
gst_vulkan_image_memory_release_view (image, view);
return FALSE;
}
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
*
* Since: 1.18
*/
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,
(GstMiniObjectDisposeFunction) gst_vulkan_image_view_dispose,
(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;
GST_CAT_TRACE (GST_CAT_VULKAN_IMAGE_VIEW, "new image view for image: %p",
image);
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);
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