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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.
96 lines
3.9 KiB
C
96 lines
3.9 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 _VK_FULL_SCREEN_RENDER_H_
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#define _VK_FULL_SCREEN_RENDER_H_
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#include <gst/gst.h>
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#include <gst/video/video.h>
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#include <gst/vulkan/vulkan.h>
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G_BEGIN_DECLS
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#define GST_TYPE_VULKAN_FULL_SCREEN_RENDER (gst_vulkan_full_screen_render_get_type())
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#define GST_VULKAN_FULL_SCREEN_RENDER(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_VULKAN_FULL_SCREEN_RENDER,GstVulkanFullScreenRender))
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#define GST_VULKAN_FULL_SCREEN_RENDER_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_VULKAN_FULL_SCREEN_RENDER,GstVulkanFullScreenRenderClass))
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#define GST_VULKAN_FULL_SCREEN_RENDER_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS((obj),GST_TYPE_VULKAN_FULL_SCREEN_RENDER,GstVulkanFullScreenRenderClass))
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#define GST_IS_VULKAN_FULL_SCREEN_RENDER(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_VULKAN_FULL_SCREEN_RENDER))
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#define GST_IS_VULKAN_FULL_SCREEN_RENDER_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_VULKAN_FULL_SCREEN_RENDER))
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typedef struct _GstVulkanFullScreenRender GstVulkanFullScreenRender;
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typedef struct _GstVulkanFullScreenRenderClass GstVulkanFullScreenRenderClass;
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typedef void (*GstVulkanFullScreenRenderDestroyInfoNotify)
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(GstVulkanFullScreenRender * render, gpointer info);
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struct Vertex
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{
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gfloat x, y, z;
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gfloat s, t;
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};
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struct _GstVulkanFullScreenRender
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{
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GstBaseTransform parent;
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GstVulkanInstance *instance;
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GstVulkanDevice *device;
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GstVulkanQueue *queue;
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GstCaps *in_caps;
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GstVideoInfo in_info;
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GstCaps *out_caps;
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GstVideoInfo out_info;
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guint n_shader_stages;
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VkPipelineShaderStageCreateInfo *shader_create_info;
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GstVulkanFullScreenRenderDestroyInfoNotify destroy_shader_create_info;
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VkRenderPass render_pass;
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VkPipelineLayout pipeline_layout;
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VkPipeline graphics_pipeline;
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GstVulkanHandle *descriptor_set_layout;
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GstMemory *vertices;
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GstMemory *indices;
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GstVulkanTrashList *trash_list;
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GstVulkanFence *last_fence;
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};
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struct _GstVulkanFullScreenRenderClass
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{
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GstBaseTransformClass video_sink_class;
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void (*shader_create_info) (GstVulkanFullScreenRender * render);
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VkDescriptorSetLayoutBinding * (*descriptor_set_layout_bindings) (GstVulkanFullScreenRender * render, guint * n_bindings);
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VkAttachmentReference * (*render_pass_attachment_references) (GstVulkanFullScreenRender * render, guint * n_refs);
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VkAttachmentDescription * (*render_pass_attachment_descriptions) (GstVulkanFullScreenRender * render, guint * n_descriptions);
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VkPushConstantRange * (*push_constant_ranges) (GstVulkanFullScreenRender * render, guint * n_constants);
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};
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gboolean gst_vulkan_full_screen_render_fill_command_buffer (GstVulkanFullScreenRender * render, VkCommandBuffer cmd, VkFramebuffer framebuffer);
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gboolean gst_vulkan_full_screen_render_submit (GstVulkanFullScreenRender * render, VkCommandBuffer cmd, GstVulkanFence *fence);
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GType gst_vulkan_full_screen_render_get_type(void);
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G_END_DECLS
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#endif
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