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These null checkes are slightly misleading when double-checking mutability for external language interop. None of the functions in these files allow the variable at hand to become `NULL` under normal operation, because they are checked at initialization and never (allowed to be) reassigned to `NULL`. Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1615>
239 lines
6.7 KiB
C
239 lines
6.7 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 "gstvkdescriptorpool.h"
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/**
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* SECTION:vkdescriptorpool
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* @title: GstVulkanDescriptorPool
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* @short_description: Vulkan descriptor pool
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* @see_also: #GstVulkanDescriptorSet, #GstVulkanDescriptorCache, #GstVulkanDevice
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*/
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#define GET_PRIV(pool) gst_vulkan_descriptor_pool_get_instance_private (pool)
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#define GST_CAT_DEFAULT gst_vulkan_descriptor_pool_debug
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GST_DEBUG_CATEGORY (GST_CAT_DEFAULT);
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struct _GstVulkanDescriptorPoolPrivate
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{
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gsize max_sets;
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gsize outstanding;
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};
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#define parent_class gst_vulkan_descriptor_pool_parent_class
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G_DEFINE_TYPE_WITH_CODE (GstVulkanDescriptorPool, gst_vulkan_descriptor_pool,
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GST_TYPE_OBJECT, G_ADD_PRIVATE (GstVulkanDescriptorPool);
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GST_DEBUG_CATEGORY_INIT (GST_CAT_DEFAULT,
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"vulkancommandpool", 0, "Vulkan Command Pool"));
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static void gst_vulkan_descriptor_pool_finalize (GObject * object);
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static void
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gst_vulkan_descriptor_pool_init (GstVulkanDescriptorPool * pool)
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{
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}
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static void
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gst_vulkan_descriptor_pool_class_init (GstVulkanDescriptorPoolClass *
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device_class)
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{
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GObjectClass *gobject_class = (GObjectClass *) device_class;
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gobject_class->finalize = gst_vulkan_descriptor_pool_finalize;
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}
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static void
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gst_vulkan_descriptor_pool_finalize (GObject * object)
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{
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GstVulkanDescriptorPool *pool = GST_VULKAN_DESCRIPTOR_POOL (object);
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#if 0
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GstVulkanDescriptorPoolPrivate *priv = GET_PRIV (pool);
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/* FIXME: track these correctly */
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if (priv->outstanding > 0)
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g_critical
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("Destroying a Vulkan descriptor pool that has outstanding descriptors!");
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#endif
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if (pool->pool)
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vkDestroyDescriptorPool (pool->device->device, pool->pool, NULL);
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pool->pool = VK_NULL_HANDLE;
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gst_clear_object (&pool->device);
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G_OBJECT_CLASS (parent_class)->finalize (object);
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}
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/**
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* gst_vulkan_descriptor_pool_new_wrapped:
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* @device: a #GstVulkanDevice
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* @pool: (transfer full): a `VkDescriptorPool`
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* @max_sets: maximum descriptor sets allocatable wit @pool
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*
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* Returns: (transfer full): a new #GstVulkanDescriptorPool
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*
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* Since: 1.18
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*/
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GstVulkanDescriptorPool *
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gst_vulkan_descriptor_pool_new_wrapped (GstVulkanDevice * device,
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VkDescriptorPool pool, gsize max_sets)
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{
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GstVulkanDescriptorPool *ret;
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GstVulkanDescriptorPoolPrivate *priv;
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g_return_val_if_fail (GST_IS_VULKAN_DEVICE (device), NULL);
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g_return_val_if_fail (pool != VK_NULL_HANDLE, NULL);
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g_return_val_if_fail (max_sets > 0, NULL);
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ret = g_object_new (GST_TYPE_VULKAN_DESCRIPTOR_POOL, NULL);
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ret->device = gst_object_ref (device);
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ret->pool = pool;
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priv = GET_PRIV (ret);
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priv->max_sets = max_sets;
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gst_object_ref_sink (ret);
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return ret;
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}
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/**
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* gst_vulkan_descriptor_pool_get_device
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* @pool: a #GstVulkanDescriptorPool
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*
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* Returns: (transfer full): the parent #GstVulkanDevice for this descriptor pool
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*
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* Since: 1.18
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*/
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GstVulkanDevice *
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gst_vulkan_descriptor_pool_get_device (GstVulkanDescriptorPool * pool)
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{
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g_return_val_if_fail (GST_IS_VULKAN_DESCRIPTOR_POOL (pool), NULL);
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return gst_object_ref (pool->device);
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}
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/**
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* gst_vulkan_descriptor_pool_get_max_sets:
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* @pool: a #GstVulkanDescriptorPool
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*
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* Returns: the maximum number of sets allocatable from @pool
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*
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* Since: 1.18
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*/
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gsize
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gst_vulkan_descriptor_pool_get_max_sets (GstVulkanDescriptorPool * pool)
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{
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GstVulkanDescriptorPoolPrivate *priv;
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g_return_val_if_fail (GST_IS_VULKAN_DESCRIPTOR_POOL (pool), 0);
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priv = GET_PRIV (pool);
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return priv->max_sets;
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}
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static GstVulkanDescriptorSet *
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descriptor_set_alloc (GstVulkanDescriptorPool * pool, guint n_layouts,
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GstVulkanHandle ** layouts, GError ** error)
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{
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VkDescriptorSetLayout *vk_layouts;
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VkDescriptorSetAllocateInfo alloc_info;
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GstVulkanDescriptorSet *set;
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VkDescriptorSet descriptor;
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VkResult err;
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guint i;
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vk_layouts = g_alloca (n_layouts * sizeof (VkDescriptorSetLayout));
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for (i = 0; i < n_layouts; i++)
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vk_layouts[i] = (VkDescriptorSetLayout) layouts[i]->handle;
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/* *INDENT-OFF* */
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alloc_info = (VkDescriptorSetAllocateInfo) {
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.sType = VK_STRUCTURE_TYPE_DESCRIPTOR_SET_ALLOCATE_INFO,
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.pNext = NULL,
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.descriptorPool = pool->pool,
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.descriptorSetCount = n_layouts,
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.pSetLayouts = vk_layouts
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};
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/* *INDENT-ON* */
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err =
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vkAllocateDescriptorSets (pool->device->device, &alloc_info, &descriptor);
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if (gst_vulkan_error_to_g_error (err, error, "vkAllocateDescriptorSets") < 0)
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return NULL;
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set =
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gst_vulkan_descriptor_set_new_wrapped (pool, descriptor, n_layouts,
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layouts);
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GST_LOG_OBJECT (pool, "created descriptor set %p", set);
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return set;
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}
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/**
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* gst_vulkan_descriptor_pool_create:
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* @pool: a #GstVulkanDescriptorPool
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* @n_layouts: number of @layouts
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* @layouts: (array length=n_layouts): list of #GstVulkanHandle containing
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* descriptor set layouts
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* @error: a #GError
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*
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* Returns: a new #GstVulkanDescriptorSet
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*
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* Since: 1.18
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*/
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GstVulkanDescriptorSet *
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gst_vulkan_descriptor_pool_create (GstVulkanDescriptorPool * pool,
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guint n_layouts, GstVulkanHandle ** layouts, GError ** error)
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{
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GstVulkanDescriptorSet *cmd = NULL;
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GstVulkanDescriptorPoolPrivate *priv;
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g_return_val_if_fail (GST_IS_VULKAN_DESCRIPTOR_POOL (pool), NULL);
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g_return_val_if_fail (n_layouts > 0, NULL);
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g_return_val_if_fail (layouts != NULL, NULL);
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priv = GET_PRIV (pool);
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GST_OBJECT_LOCK (pool);
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priv->outstanding++;
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if (priv->outstanding >= priv->max_sets) {
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g_warning ("%s: Attempt was made to allocate more descriptor sets than are "
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"available", GST_OBJECT_NAME (pool));
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g_set_error (error, GST_VULKAN_ERROR, VK_ERROR_TOO_MANY_OBJECTS,
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"Attempt was made to allocate more descriptor sets than are available");
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priv->outstanding--;
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GST_OBJECT_UNLOCK (pool);
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return NULL;
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}
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GST_OBJECT_UNLOCK (pool);
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cmd = descriptor_set_alloc (pool, n_layouts, layouts, error);
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if (!cmd)
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return NULL;
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return cmd;
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}
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