Function create_mapped_buffer

libavutil/vulkan.c:1337–1381

}

static int create_mapped_buffer(FFVulkanContext *s,
                                FFVkBuffer *vkb, VkBufferUsageFlags usage,
                                size_t size,
                                VkExternalMemoryBufferCreateInfo *create_desc,
                                VkImportMemoryHostPointerInfoEXT *import_desc,
                                VkMemoryHostPointerPropertiesEXT props)
{
    int err;
    VkResult ret;
    FFVulkanFunctions *vk = &s->vkfn;

    VkBufferCreateInfo buf_spawn = {
        .sType       = VK_STRUCTURE_TYPE_BUFFER_CREATE_INFO,
        .pNext       = create_desc,
        .usage       = usage,
        .sharingMode = VK_SHARING_MODE_EXCLUSIVE,
        .size        = size,
    };
    VkMemoryRequirements req = {
        .size           = size,
        .alignment      = s->hprops.minImportedHostPointerAlignment,
        .memoryTypeBits = props.memoryTypeBits,
    };

    err = ff_vk_alloc_mem(s, &req,
                          VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT,
                          import_desc, &vkb->flags, &vkb->mem);
    if (err < 0)
        return err;

    ret = vk->CreateBuffer(s->hwctx->act_dev, &buf_spawn, s->hwctx->alloc, &vkb->buf);
    if (ret != VK_SUCCESS) {
        vk->FreeMemory(s->hwctx->act_dev, vkb->mem, s->hwctx->alloc);
        return AVERROR_EXTERNAL;
    }

    ret = vk->BindBufferMemory(s->hwctx->act_dev, vkb->buf, vkb->mem, 0);
    if (ret != VK_SUCCESS) {
        vk->FreeMemory(s->hwctx->act_dev, vkb->mem, s->hwctx->alloc);
        vk->DestroyBuffer(s->hwctx->act_dev, vkb->buf, s->hwctx->alloc);
        return AVERROR_EXTERNAL;
    }

    return 0;
}

static void destroy_avvkbuf(void *opaque, uint8_t *data)
{