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32b3387ae6
The major functionality gain this provides is proper reference counting for a descriptor set. Overall this allows us to create descriptor sets when they are needed (or reused from a cache) without violating any of vulkan's object synchronisation requirements. As there are a fixed number of sets available in a pool, the number of descriptors in elements is currently hardcoded to 32. This can be extended in a future change to create pools on the fly if that limit is ever overrun.
113 lines
3.5 KiB
C
113 lines
3.5 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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#ifndef __GST_VULKAN_DESCRIPTOR_SET_H__
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#define __GST_VULKAN_DESCRIPTOR_SET_H__
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#include <gst/gst.h>
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#include <gst/vulkan/vulkan_fwd.h>
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#include <gst/vulkan/gstvkapi.h>
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G_BEGIN_DECLS
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GST_VULKAN_API
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GType gst_vulkan_descriptor_set_get_type (void);
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#define GST_TYPE_VULKAN_DESCRIPTOR_SET (gst_vulkan_descriptor_set_get_type ())
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typedef struct _GstVulkanDescriptorSet GstVulkanDescriptorSet;
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struct _GstVulkanDescriptorSet
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{
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GstMiniObject parent;
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VkDescriptorSet set;
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/* <protected> */
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GstVulkanDescriptorPool *pool;
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GstVulkanDescriptorCache *cache;
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guint n_layouts;
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GstVulkanHandle **layouts;
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GMutex lock;
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};
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/**
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* gst_vulkan_descriptor_set_ref: (skip)
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* @set: a #GstVulkanDescriptorSet.
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*
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* Increases the refcount of the given buffer by one.
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*
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* Returns: (transfer full): @buf
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*/
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static inline GstVulkanDescriptorSet* gst_vulkan_descriptor_set_ref(GstVulkanDescriptorSet* set);
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static inline GstVulkanDescriptorSet *
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gst_vulkan_descriptor_set_ref (GstVulkanDescriptorSet * set)
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{
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return (GstVulkanDescriptorSet *) gst_mini_object_ref (GST_MINI_OBJECT_CAST (set));
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}
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/**
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* gst_vulkan_descriptor_set_unref: (skip)
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* @set: (transfer full): a #GstVulkanDescriptorSet.
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*
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* Decreases the refcount of the buffer. If the refcount reaches 0, the buffer
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* will be freed.
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*/
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static inline void gst_vulkan_descriptor_set_unref(GstVulkanDescriptorSet* set);
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static inline void
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gst_vulkan_descriptor_set_unref (GstVulkanDescriptorSet * set)
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{
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gst_mini_object_unref (GST_MINI_OBJECT_CAST (set));
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}
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/**
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* gst_clear_vulkan_descriptor_set: (skip)
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* @set_ptr: a pointer to a #GstVulkanDescriptorSet reference
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*
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* Clears a reference to a #GstVulkanDescriptorSet.
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*
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* @buf_ptr must not be %NULL.
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*
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* If the reference is %NULL then this function does nothing. Otherwise, the
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* reference count of the descriptor set is decreased and the pointer is set
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* to %NULL.
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*
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* Since: 1.16
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*/
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static inline void
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gst_clear_vulkan_descriptor_set (GstVulkanDescriptorSet ** set_ptr)
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{
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gst_clear_mini_object ((GstMiniObject **) set_ptr);
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}
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#define gst_vulkan_descriptor_set_lock(set) g_mutex_lock (&((set)->lock))
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#define gst_vulkan_descriptor_set_unlock(set) g_mutex_unlock (&((set)->lock))
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GST_VULKAN_API
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GstVulkanDescriptorSet * gst_vulkan_descriptor_set_new_wrapped (GstVulkanDescriptorPool * pool,
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VkDescriptorSet set,
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guint n_layouts,
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GstVulkanHandle ** layouts);
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G_END_DECLS
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#endif /* _GST_VULKAN_DESCRIPTOR_SET_H_ */
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