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a7c2aa473f
Weak refs don't quite work here correctly as there is always a race with taking the lock between find_view() and remove_view(). If find_view() returns a view that is going to removed by remove_view() then we have an interesting situation. In theory, the number and type of views for an image are relatively constant and should not change one they've been set up which means that it is actually practical to perform pool-like reference counting here where the image holds a pool of different views that it can give out as necessary.
154 lines
5.7 KiB
C
154 lines
5.7 KiB
C
/*
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* GStreamer
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* Copyright (C) 2015 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_IMAGE_MEMORY_H__
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#define __GST_VULKAN_IMAGE_MEMORY_H__
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#include <gst/vulkan/gstvkbarrier.h>
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#include <gst/vulkan/gstvkdevice.h>
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#include <gst/video/video.h>
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G_BEGIN_DECLS
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#define GST_TYPE_VULKAN_IMAGE_MEMORY_ALLOCATOR (gst_vulkan_image_memory_allocator_get_type())
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GST_VULKAN_API
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GType gst_vulkan_image_memory_allocator_get_type(void);
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#define GST_IS_VULKAN_IMAGE_MEMORY_ALLOCATOR(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_VULKAN_IMAGE_MEMORY_ALLOCATOR))
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#define GST_IS_VULKAN_IMAGE_MEMORY_ALLOCATOR_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_VULKAN_IMAGE_MEMORY_ALLOCATOR))
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#define GST_VULKAN_IMAGE_MEMORY_ALLOCATOR_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GST_TYPE_VULKAN_MEMORY_ALLOCATOR, GstVulkanImageMemoryAllocatorClass))
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#define GST_VULKAN_IMAGE_MEMORY_ALLOCATOR(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_VULKAN_MEMORY_ALLOCATOR, GstVulkanImageMemoryAllocator))
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#define GST_VULKAN_IMAGE_MEMORY_ALLOCATOR_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_VULKAN_MEMORY_ALLOCATOR, GstVulkanImageMemoryAllocatorClass))
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#define GST_VULKAN_IMAGE_MEMORY_ALLOCATOR_CAST(obj) ((GstVulkanImageMemoryAllocator *)(obj))
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#define GST_VULKAN_IMAGE_MEMORY_ALLOCATOR_NAME "VulkanImage"
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#define GST_CAPS_FEATURE_MEMORY_VULKAN_IMAGE "memory:VulkanImage"
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struct _GstVulkanBarrierImageInfo
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{
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GstVulkanBarrierMemoryInfo parent;
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VkImageLayout image_layout;
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/* FIXME: multiple layers or mipmap levels may require multiple barriers */
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VkImageSubresourceRange subresource_range;
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};
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struct _GstVulkanImageMemory
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{
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GstMemory parent;
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GstVulkanDevice * device;
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VkImage image;
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GstVulkanMemory *vk_mem;
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VkImageCreateInfo create_info;
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VkMemoryRequirements requirements;
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VkImageFormatProperties format_properties;
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VkImageUsageFlags usage;
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GstVulkanBarrierImageInfo barrier;
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GMutex lock;
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gboolean wrapped;
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GDestroyNotify notify;
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gpointer user_data;
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GPtrArray *views;
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GPtrArray *outstanding_views;
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gpointer _padding[GST_PADDING];
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};
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/**
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* GstVulkanImageMemoryFindViewFunc:
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*
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* Function definition used to find views. Return %TRUE if @view matches the
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* criteria.
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*/
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typedef gboolean (*GstVulkanImageMemoryFindViewFunc) (GstVulkanImageView * view, gpointer user_data);
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/**
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* GstVulkanImageMemoryAllocator
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*
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* Opaque #GstVulkanImageMemoryAllocator struct
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*/
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struct _GstVulkanImageMemoryAllocator
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{
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GstAllocator parent;
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};
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/**
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* GstVulkanImageMemoryAllocatorClass:
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*
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* The #GstVulkanImageMemoryAllocatorClass only contains private data
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*/
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struct _GstVulkanImageMemoryAllocatorClass
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{
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GstAllocatorClass parent_class;
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};
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GST_VULKAN_API
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void gst_vulkan_image_memory_init_once (void);
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GST_VULKAN_API
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gboolean gst_is_vulkan_image_memory (GstMemory * mem);
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GST_VULKAN_API
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GstMemory * gst_vulkan_image_memory_alloc (GstVulkanDevice * device,
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VkFormat format,
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gsize width,
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gsize height,
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VkImageTiling tiling,
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VkImageUsageFlags usage,
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VkMemoryPropertyFlags mem_prop_flags);
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GST_VULKAN_API
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GstMemory * gst_vulkan_image_memory_wrapped (GstVulkanDevice * device,
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VkImage image,
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VkFormat format,
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gsize width,
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gsize height,
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VkImageTiling tiling,
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VkImageUsageFlags usage,
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gpointer user_data,
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GDestroyNotify notify);
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GST_VULKAN_API
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guint32 gst_vulkan_image_memory_get_width (GstVulkanImageMemory * image);
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GST_VULKAN_API
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guint32 gst_vulkan_image_memory_get_height (GstVulkanImageMemory * image);
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GST_VULKAN_API
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GstVulkanImageView *gst_vulkan_image_memory_find_view (GstVulkanImageMemory * image,
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GstVulkanImageMemoryFindViewFunc find_func,
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gpointer user_data);
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GST_VULKAN_API
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void gst_vulkan_image_memory_add_view (GstVulkanImageMemory * image,
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GstVulkanImageView * view);
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GST_VULKAN_API
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VkFormat gst_vulkan_format_from_video_info (GstVideoInfo * v_info,
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guint plane);
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G_END_DECLS
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#endif /* __GST_VULKAN_IMAGE_MEMORY_H__ */
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