204 lines
7 KiB
C
Executable file
204 lines
7 KiB
C
Executable file
/*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg 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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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef AVUTIL_HWCONTEXT_VULKAN_H
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#define AVUTIL_HWCONTEXT_VULKAN_H
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#include <vulkan/vulkan.h>
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#include "pixfmt.h"
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#include "frame.h"
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/**
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* @file
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* API-specific header for AV_HWDEVICE_TYPE_VULKAN.
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*
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* For user-allocated pools, AVHWFramesContext.pool must return AVBufferRefs
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* with the data pointer set to an AVVkFrame.
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*/
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/**
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* Main Vulkan context, allocated as AVHWDeviceContext.hwctx.
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* All of these can be set before init to change what the context uses
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*/
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typedef struct AVVulkanDeviceContext {
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/**
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* Custom memory allocator, else NULL
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*/
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const VkAllocationCallbacks *alloc;
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/**
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* Vulkan instance. Must be at least version 1.1.
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*/
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VkInstance inst;
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/**
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* Physical device
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*/
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VkPhysicalDevice phys_dev;
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/**
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* Active device
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*/
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VkDevice act_dev;
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/**
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* Queue family index for graphics
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* @note av_hwdevice_create() will set all 3 queue indices if unset
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* If there is no dedicated queue for compute or transfer operations,
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* they will be set to the graphics queue index which can handle both.
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* nb_graphics_queues indicates how many queues were enabled for the
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* graphics queue (must be at least 1)
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*/
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int queue_family_index;
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int nb_graphics_queues;
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/**
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* Queue family index to use for transfer operations, and the amount of queues
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* enabled. In case there is no dedicated transfer queue, nb_tx_queues
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* must be 0 and queue_family_tx_index must be the same as either the graphics
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* queue or the compute queue, if available.
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*/
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int queue_family_tx_index;
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int nb_tx_queues;
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/**
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* Queue family index for compute ops, and the amount of queues enabled.
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* In case there are no dedicated compute queues, nb_comp_queues must be
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* 0 and its queue family index must be set to the graphics queue.
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*/
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int queue_family_comp_index;
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int nb_comp_queues;
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/**
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* Enabled instance extensions.
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* If supplying your own device context, set this to an array of strings, with
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* each entry containing the specified Vulkan extension string to enable.
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* Duplicates are possible and accepted.
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* If no extensions are enabled, set these fields to NULL, and 0 respectively.
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*/
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const char * const *enabled_inst_extensions;
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int nb_enabled_inst_extensions;
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/**
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* Enabled device extensions. By default, VK_KHR_external_memory_fd,
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* VK_EXT_external_memory_dma_buf, VK_EXT_image_drm_format_modifier,
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* VK_KHR_external_semaphore_fd and VK_EXT_external_memory_host are enabled if found.
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* If supplying your own device context, these fields takes the same format as
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* the above fields, with the same conditions that duplicates are possible
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* and accepted, and that NULL and 0 respectively means no extensions are enabled.
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*/
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const char * const *enabled_dev_extensions;
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int nb_enabled_dev_extensions;
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/**
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* This structure should be set to the set of features that present and enabled
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* during device creation. When a device is created by FFmpeg, it will default to
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* enabling all that are present of the shaderImageGatherExtended,
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* fragmentStoresAndAtomics, shaderInt64 and vertexPipelineStoresAndAtomics features.
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*/
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VkPhysicalDeviceFeatures2 device_features;
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} AVVulkanDeviceContext;
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/**
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* Allocated as AVHWFramesContext.hwctx, used to set pool-specific options
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*/
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typedef struct AVVulkanFramesContext {
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/**
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* Controls the tiling of allocated frames.
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*/
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VkImageTiling tiling;
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/**
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* Defines extra usage of output frames. If left as 0, the following bits
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* are set: TRANSFER_SRC, TRANSFER_DST. SAMPLED and STORAGE.
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*/
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VkImageUsageFlagBits usage;
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/**
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* Extension data for image creation.
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*/
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void *create_pnext;
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/**
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* Extension data for memory allocation. Must have as many entries as
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* the number of planes of the sw_format.
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* This will be chained to VkExportMemoryAllocateInfo, which is used
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* to make all pool images exportable to other APIs if the necessary
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* extensions are present in enabled_dev_extensions.
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*/
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void *alloc_pnext[AV_NUM_DATA_POINTERS];
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} AVVulkanFramesContext;
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/*
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* Frame structure, the VkFormat of the image will always match
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* the pool's sw_format.
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* All frames, imported or allocated, will be created with the
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* VK_IMAGE_CREATE_ALIAS_BIT flag set, so the memory may be aliased if needed.
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*
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* If all three queue family indices in the device context are the same,
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* images will be created with the EXCLUSIVE sharing mode. Otherwise, all images
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* will be created using the CONCURRENT sharing mode.
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*
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* @note the size of this structure is not part of the ABI, to allocate
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* you must use @av_vk_frame_alloc().
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*/
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typedef struct AVVkFrame {
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/**
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* Vulkan images to which the memory is bound to.
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*/
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VkImage img[AV_NUM_DATA_POINTERS];
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/**
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* The same tiling must be used for all images in the frame.
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*/
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VkImageTiling tiling;
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/**
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* Memory backing the images. Could be less than the amount of images
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* if importing from a DRM or VAAPI frame.
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*/
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VkDeviceMemory mem[AV_NUM_DATA_POINTERS];
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size_t size[AV_NUM_DATA_POINTERS];
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/**
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* OR'd flags for all memory allocated
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*/
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VkMemoryPropertyFlagBits flags;
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/**
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* Updated after every barrier
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*/
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VkAccessFlagBits access[AV_NUM_DATA_POINTERS];
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VkImageLayout layout[AV_NUM_DATA_POINTERS];
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/**
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* Synchronization semaphores. Must not be freed manually. Must be waited on
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* and signalled at every queue submission.
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* Could be less than the amount of images: either one per VkDeviceMemory
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* or one for the entire frame. All others will be set to VK_NULL_HANDLE.
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*/
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VkSemaphore sem[AV_NUM_DATA_POINTERS];
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/**
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* Internal data.
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*/
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struct AVVkFrameInternal *internal;
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} AVVkFrame;
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/**
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* Allocates a single AVVkFrame and initializes everything as 0.
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* @note Must be freed via av_free()
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*/
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AVVkFrame *av_vk_frame_alloc(void);
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/**
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* Returns the format of each image up to the number of planes for a given sw_format.
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* Returns NULL on unsupported formats.
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*/
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const VkFormat *av_vkfmt_from_pixfmt(enum AVPixelFormat p);
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#endif /* AVUTIL_HWCONTEXT_VULKAN_H */
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