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151 lines
4 KiB
C
151 lines
4 KiB
C
/*
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* GStreamer
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* Copyright (C) 2019 Matthew Waters <matthew@centricular.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <gst/vulkan/vulkan.h>
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/**
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* SECTION:vkimageview
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* @title: GstVulkanImageView
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* @short_description: wrapper for `VkImageView`'s
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* @see_also: #GstVulkanImageMemory, #GstVulkanDevice
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*
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* #GstVulkanImageView is a wrapper around a `VkImageView` mostly for
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* usage across element boundaries with #GstVulkanImageMemory
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*/
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#define GST_CAT_DEFUALT GST_CAT_VULKAN_IMAGE_VIEW
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GST_DEBUG_CATEGORY_STATIC (GST_CAT_DEFUALT);
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static void
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init_debug (void)
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{
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static gsize _init = 0;
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if (g_once_init_enter (&_init)) {
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GST_DEBUG_CATEGORY_INIT (GST_CAT_VULKAN_IMAGE_VIEW, "vulkanimageview",
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0, "Vulkan Image View");
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g_once_init_leave (&_init, 1);
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}
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}
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extern void
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gst_vulkan_image_memory_release_view (GstVulkanImageMemory * image,
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GstVulkanImageView * view);
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static gboolean
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gst_vulkan_image_view_dispose (GstVulkanImageView * view)
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{
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GstVulkanImageMemory *image;
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if ((image = view->image) == NULL)
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return TRUE;
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gst_vulkan_image_view_ref (view);
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gst_vulkan_image_memory_release_view (image, view);
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return FALSE;
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}
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static void
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gst_vulkan_image_view_free (GstVulkanImageView * view)
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{
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GST_CAT_TRACE (GST_CAT_VULKAN_IMAGE_VIEW, "freeing image view:%p ", view);
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if (view->view)
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vkDestroyImageView (view->device->device, view->view, NULL);
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if (view->image) {
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gst_memory_unref (GST_MEMORY_CAST (view->image));
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}
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view->image = NULL;
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gst_clear_object (&view->device);
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g_free (view);
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}
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/**
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* gst_vulkan_image_view_new:
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* @image: a #GstVulkanImageMemory to create the new view from
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* @create_info: the creation information to create the view from
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*
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* Returns: (transfer full): A new #GstVulkanImageView from @image and
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* @create_info
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*
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* Since: 1.18
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*/
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GstVulkanImageView *
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gst_vulkan_image_view_new (GstVulkanImageMemory * image,
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VkImageViewCreateInfo * create_info)
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{
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GstVulkanImageView *view;
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GError *error = NULL;
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VkResult err;
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g_return_val_if_fail (create_info != NULL, NULL);
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g_return_val_if_fail (gst_is_vulkan_image_memory (GST_MEMORY_CAST (image)),
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NULL);
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init_debug ();
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view = g_new0 (GstVulkanImageView, 1);
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gst_mini_object_init ((GstMiniObject *) view, 0,
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gst_vulkan_image_view_get_type (), NULL,
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(GstMiniObjectDisposeFunction) gst_vulkan_image_view_dispose,
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(GstMiniObjectFreeFunction) gst_vulkan_image_view_free);
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err =
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vkCreateImageView (image->device->device, create_info, NULL, &view->view);
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if (gst_vulkan_error_to_g_error (err, &error, "vkImageCreateView") < 0)
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goto vk_error;
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view->image =
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(GstVulkanImageMemory *) gst_memory_ref (GST_MEMORY_CAST (image));
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view->device = gst_object_ref (image->device);
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view->create_info = *create_info;
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/* we cannot keep this as it may point to stack allocated memory */
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view->create_info.pNext = NULL;
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GST_CAT_TRACE (GST_CAT_VULKAN_IMAGE_VIEW, "new image view for image: %p",
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image);
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return view;
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vk_error:
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{
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GST_CAT_ERROR (GST_CAT_VULKAN_IMAGE_VIEW,
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"Failed to allocate image memory %s", error->message);
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g_clear_error (&error);
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goto error;
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}
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error:
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{
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g_free (view);
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return NULL;
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}
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}
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GST_DEFINE_MINI_OBJECT_TYPE (GstVulkanImageView, gst_vulkan_image_view);
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