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19 #ifndef AVUTIL_HWCONTEXT_VULKAN_H
20 #define AVUTIL_HWCONTEXT_VULKAN_H
22 #include <vulkan/vulkan.h>
26 * API-specific header for AV_HWDEVICE_TYPE_VULKAN.
28 * For user-allocated pools, AVHWFramesContext.pool must return AVBufferRefs
29 * with the data pointer set to an AVVkFrame.
33 * Main Vulkan context, allocated as AVHWDeviceContext.hwctx.
34 * All of these can be set before init to change what the context uses
36 typedef struct AVVulkanDeviceContext {
38 * Custom memory allocator, else NULL
40 const VkAllocationCallbacks *alloc;
42 * Vulkan instance. Must be at least version 1.1.
48 VkPhysicalDevice phys_dev;
54 * Queue family index for graphics
55 * @note av_hwdevice_create() will set all 3 queue indices if unset
56 * If there is no dedicated queue for compute or transfer operations,
57 * they will be set to the graphics queue index which can handle both.
59 int queue_family_index;
61 * Queue family index for transfer ops only
63 int queue_family_tx_index;
65 * Queue family index for compute ops
67 int queue_family_comp_index;
69 * Enabled instance extensions. By default, VK_KHR_surface is enabled if found.
70 * If supplying your own device context, set this to an array of strings, with
71 * each entry containing the specified Vulkan extension string to enable.
72 * Duplicates are possible and accepted.
73 * If no extensions are enabled, set these fields to NULL, and 0 respectively.
75 const char * const *enabled_inst_extensions;
76 int nb_enabled_inst_extensions;
78 * Enabled device extensions. By default, VK_KHR_external_memory_fd,
79 * VK_EXT_external_memory_dma_buf, VK_EXT_image_drm_format_modifier and
80 * VK_KHR_external_semaphore_fd are enabled if found.
81 * If supplying your own device context, these fields takes the same format as
82 * the above fields, with the same conditions that duplicates are possible
83 * and accepted, and that NULL and 0 respectively means no extensions are enabled.
85 const char * const *enabled_dev_extensions;
86 int nb_enabled_dev_extensions;
87 } AVVulkanDeviceContext;
90 * Allocated as AVHWFramesContext.hwctx, used to set pool-specific options
92 typedef struct AVVulkanFramesContext {
94 * Controls the tiling of output frames.
98 * Defines extra usage of output frames. This is bitwise OR'd with the
99 * standard usage flags (SAMPLED, STORAGE, TRANSFER_SRC and TRANSFER_DST).
101 VkImageUsageFlagBits usage;
103 * Extension data for image creation. By default, if the extension is
104 * available, this will be chained to a VkImageFormatListCreateInfoKHR.
108 * Extension data for memory allocation. Must have as many entries as
109 * the number of planes of the sw_format.
110 * This will be chained to VkExportMemoryAllocateInfo, which is used
111 * to make all pool images exportable to other APIs.
113 void *alloc_pnext[AV_NUM_DATA_POINTERS];
114 } AVVulkanFramesContext;
117 * Frame structure, the VkFormat of the image will always match
118 * the pool's sw_format.
119 * All frames, imported or allocated, will be created with the
120 * VK_IMAGE_CREATE_ALIAS_BIT flag set, so the memory may be aliased if needed.
122 * If all three queue family indices in the device context are the same,
123 * images will be created with the EXCLUSIVE sharing mode. Otherwise, all images
124 * will be created using the CONCURRENT sharing mode.
126 * @note the size of this structure is not part of the ABI, to allocate
127 * you must use @av_vk_frame_alloc().
129 typedef struct AVVkFrame {
131 * Vulkan images to which the memory is bound to.
133 VkImage img[AV_NUM_DATA_POINTERS];
136 * Same tiling must be used for all images.
138 VkImageTiling tiling;
141 * Memory backing the images. Could be less than the amount of images
142 * if importing from a DRM or VAAPI frame.
144 VkDeviceMemory mem[AV_NUM_DATA_POINTERS];
145 size_t size[AV_NUM_DATA_POINTERS];
148 * OR'd flags for all memory allocated
150 VkMemoryPropertyFlagBits flags;
153 * Updated after every barrier
155 VkAccessFlagBits access[AV_NUM_DATA_POINTERS];
156 VkImageLayout layout[AV_NUM_DATA_POINTERS];
159 * Per-image semaphores. Must not be freed manually. Must be waited on
160 * and signalled at every queue submission.
162 VkSemaphore sem[AV_NUM_DATA_POINTERS];
167 struct AVVkFrameInternal *internal;
171 * Allocates a single AVVkFrame and initializes everything as 0.
172 * @note Must be freed via av_free()
174 AVVkFrame *av_vk_frame_alloc(void);
177 * Returns the format of each image up to the number of planes for a given sw_format.
179 const VkFormat *av_vkfmt_from_pixfmt(enum AVPixelFormat p);
181 #endif /* AVUTIL_HWCONTEXT_VULKAN_H */