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Diffstat (limited to 'libavutil/hwcontext_vulkan.h')
-rw-r--r-- | libavutil/hwcontext_vulkan.h | 158 |
1 files changed, 158 insertions, 0 deletions
diff --git a/libavutil/hwcontext_vulkan.h b/libavutil/hwcontext_vulkan.h new file mode 100644 index 0000000000..01d6d98b01 --- /dev/null +++ b/libavutil/hwcontext_vulkan.h @@ -0,0 +1,158 @@ +/* + * This file is part of FFmpeg. + * + * FFmpeg is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * FFmpeg is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with FFmpeg; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#ifndef AVUTIL_HWCONTEXT_VULKAN_H +#define AVUTIL_HWCONTEXT_VULKAN_H + +#include <vulkan/vulkan.h> + +/** + * @file + * API-specific header for AV_HWDEVICE_TYPE_VULKAN. + * + * For user-allocated pools, AVHWFramesContext.pool must return AVBufferRefs + * with the data pointer set to an AVVkFrame. + */ + +/** + * Main Vulkan context, allocated as AVHWDeviceContext.hwctx. + * All of these can be set before init to change what the context uses + */ +typedef struct AVVulkanDeviceContext { + /** + * Custom memory allocator, else NULL + */ + const VkAllocationCallbacks *alloc; + /** + * Instance + */ + VkInstance inst; + /** + * Physical device + */ + VkPhysicalDevice phys_dev; + /** + * Active device + */ + VkDevice act_dev; + /** + * Queue family index for graphics + * @note av_hwdevice_create() will set all 3 queue indices if unset + * If there is no dedicated queue for compute or transfer operations, + * they will be set to the graphics queue index which can handle both. + */ + int queue_family_index; + /** + * Queue family index for transfer ops only + */ + int queue_family_tx_index; + /** + * Queue family index for compute ops + */ + int queue_family_comp_index; +} AVVulkanDeviceContext; + +/** + * Allocated as AVHWFramesContext.hwctx, used to set pool-specific options + */ +typedef struct AVVulkanFramesContext { + /** + * Controls the tiling of output frames. + */ + VkImageTiling tiling; + /** + * Defines extra usage of output frames. This is bitwise OR'd with the + * standard usage flags (SAMPLED, STORAGE, TRANSFER_SRC and TRANSFER_DST). + */ + VkImageUsageFlagBits usage; + /** + * Extension data for image creation. By default, if the extension is + * available, this will be chained to a VkImageFormatListCreateInfoKHR. + */ + void *create_pnext; + /** + * Extension data for memory allocation. Must have as many entries as + * the number of planes of the sw_format. + * This will be chained to VkExportMemoryAllocateInfo, which is used + * to make all pool images exportable to other APIs. + */ + void *alloc_pnext[AV_NUM_DATA_POINTERS]; +} AVVulkanFramesContext; + +/* + * Frame structure, the VkFormat of the image will always match + * the pool's sw_format. + * All frames, imported or allocated, will be created with the + * VK_IMAGE_CREATE_ALIAS_BIT flag set, so the memory may be aliased if needed. + * + * @note the size of this structure is not part of the ABI, to allocate + * you must use @av_vk_frame_alloc(). + */ +typedef struct AVVkFrame { + /** + * Vulkan images to which the memory is bound to. + */ + VkImage img[AV_NUM_DATA_POINTERS]; + + /** + * Same tiling must be used for all images. + */ + VkImageTiling tiling; + + /** + * Memory backing the images. Could be less than the amount of images + * if importing from a DRM or VAAPI frame. + */ + VkDeviceMemory mem[AV_NUM_DATA_POINTERS]; + size_t size[AV_NUM_DATA_POINTERS]; + + /** + * OR'd flags for all memory allocated + */ + VkMemoryPropertyFlagBits flags; + + /** + * Updated after every barrier + */ + VkAccessFlagBits access[AV_NUM_DATA_POINTERS]; + VkImageLayout layout[AV_NUM_DATA_POINTERS]; + + /** + * Per-image semaphores. Must not be freed manually. Must be waited on + * and signalled at every queue submission. + */ + VkSemaphore sem[AV_NUM_DATA_POINTERS]; + + /** + * Internal data. + */ + struct AVVkFrameInternal *internal; +} AVVkFrame; + +/** + * Allocates a single AVVkFrame and initializes everything as 0. + * @note Must be freed via av_free() + */ +AVVkFrame *av_vk_frame_alloc(void); + +/** + * Returns the format of each image up to the number of planes for a given sw_format. + */ +const VkFormat *av_vkfmt_from_pixfmt(enum AVPixelFormat p); + +#endif /* AVUTIL_HWCONTEXT_VULKAN_H */ |