ext/vulkan/vkelementutils.c

   1 /*
   2  * GStreamer
   3  * Copyright (C) 2019 Matthew Waters <matthew@centricular.com>
   4  *
   5  * This library is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU Library General Public
   7  * License as published by the Free Software Foundation; either
   8  * version 2 of the License, or (at your option) any later version.
   9  *
  10  * This library is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * Library General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU Library General Public
  16  * License along with this library; if not, write to the
  17  * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
  18  * Boston, MA 02110-1301, USA.
  19  */
  20
  21 #ifdef HAVE_CONFIG_H
  22 #include "config.h"
  23 #endif
  24
  25 #include "vkelementutils.h"
  26
  27 static void
  28 fill_vulkan_image_view_info (VkImage image, VkFormat format,
  29     VkImageViewCreateInfo * info)
  30 {
  31   /* *INDENT-OFF* */
  32   *info = (VkImageViewCreateInfo) {
  33       .sType = VK_STRUCTURE_TYPE_IMAGE_VIEW_CREATE_INFO,
  34       .pNext = NULL,
  35       .image = image,
  36       .format = format,
  37       .viewType = VK_IMAGE_VIEW_TYPE_2D,
  38       .flags = 0,
  39       .components = (VkComponentMapping) {
  40           VK_COMPONENT_SWIZZLE_R,
  41           VK_COMPONENT_SWIZZLE_G,
  42           VK_COMPONENT_SWIZZLE_B,
  43           VK_COMPONENT_SWIZZLE_A
  44       },
  45       .subresourceRange = (VkImageSubresourceRange) {
  46           .aspectMask = VK_IMAGE_ASPECT_COLOR_BIT,
  47           .baseMipLevel = 0,
  48           .levelCount = 1,
  49           .baseArrayLayer = 0,
  50           .layerCount = 1,
  51       }
  52   };
  53   /* *INDENT-ON* */
  54 }
  55
  56 static gboolean
  57 find_compatible_view (GstVulkanImageView * view, VkImageViewCreateInfo * info)
  58 {
  59   return view->create_info.image == info->image
  60       && view->create_info.format == info->format
  61       && view->create_info.viewType == info->viewType
  62       && view->create_info.flags == info->flags
  63       && view->create_info.components.r == info->components.r
  64       && view->create_info.components.g == info->components.g
  65       && view->create_info.components.b == info->components.b
  66       && view->create_info.components.a == info->components.a
  67       && view->create_info.subresourceRange.aspectMask ==
  68       info->subresourceRange.aspectMask
  69       && view->create_info.subresourceRange.baseMipLevel ==
  70       info->subresourceRange.baseMipLevel
  71       && view->create_info.subresourceRange.levelCount ==
  72       info->subresourceRange.levelCount
  73       && view->create_info.subresourceRange.levelCount ==
  74       info->subresourceRange.levelCount
  75       && view->create_info.subresourceRange.baseArrayLayer ==
  76       info->subresourceRange.baseArrayLayer
  77       && view->create_info.subresourceRange.layerCount ==
  78       info->subresourceRange.layerCount;
  79 }
  80
  81 GstVulkanImageView *
  82 get_or_create_image_view (GstVulkanImageMemory * image)
  83 {
  84   VkImageViewCreateInfo create_info;
  85   GstVulkanImageView *ret = NULL;
  86
  87   fill_vulkan_image_view_info (image->image, image->create_info.format,
  88       &create_info);
  89
  90   ret = gst_vulkan_image_memory_find_view (image,
  91       (GstVulkanImageMemoryFindViewFunc) find_compatible_view, &create_info);
  92   if (!ret) {
  93     ret = gst_vulkan_image_view_new (image, &create_info);
  94     gst_vulkan_image_memory_add_view (image, ret);
  95   }
  96
  97   return ret;
  98 }