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359 lines
10 KiB
C
359 lines
10 KiB
C
/*
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* GStreamer
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* Copyright (C) 2016 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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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include "vkbuffermemory.h"
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/**
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* SECTION:vkbuffermemory
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* @short_description: memory subclass for Vulkan buffer memory
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* @see_also: #GstMemory, #GstAllocator
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*
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* GstVulkanBufferMemory is a #GstMemory subclass providing support for the
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* mapping of Vulkan device memory.
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*/
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#define GST_CAT_DEFUALT GST_CAT_VULKAN_BUFFER_MEMORY
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GST_DEBUG_CATEGORY_STATIC (GST_CAT_DEFUALT);
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static GstAllocator *_vulkan_buffer_memory_allocator;
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#define GST_VK_BUFFER_CREATE_INFO_INIT GST_VK_STRUCT_8
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#define GST_VK_BUFFER_CREATE_INFO(info, pNext, flags, size, usage, sharingMode, queueFamilyIndexCount, pQueueFamilyIndices ) \
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G_STMT_START { \
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VkBufferCreateInfo tmp = GST_VK_BUFFER_CREATE_INFO_INIT (VK_STRUCTURE_TYPE_BUFFER_CREATE_INFO, pNext, flags, size, usage, sharingMode, queueFamilyIndexCount, pQueueFamilyIndices); \
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(info) = tmp; \
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} G_STMT_END
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static gboolean
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_create_info_from_args (VkBufferCreateInfo * info, gsize size,
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VkBufferUsageFlags usage)
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{
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/* FIXME: validate these */
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GST_VK_BUFFER_CREATE_INFO (*info, NULL, 0, size, usage,
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VK_SHARING_MODE_EXCLUSIVE, 0, NULL);
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return TRUE;
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}
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static void
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_vk_buffer_mem_init (GstVulkanBufferMemory * mem, GstAllocator * allocator,
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GstMemory * parent, GstVulkanDevice * device, VkBufferUsageFlags usage,
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GstAllocationParams * params, gsize size, gpointer user_data,
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GDestroyNotify notify)
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{
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gsize align = gst_memory_alignment, offset = 0, maxsize = size;
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GstMemoryFlags flags = 0;
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if (params) {
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flags = params->flags;
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align |= params->align;
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offset = params->prefix;
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maxsize += params->prefix + params->padding + align;
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}
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gst_memory_init (GST_MEMORY_CAST (mem), flags, allocator, parent, maxsize,
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align, offset, size);
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mem->device = gst_object_ref (device);
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mem->wrapped = FALSE;
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mem->notify = notify;
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mem->user_data = user_data;
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g_mutex_init (&mem->lock);
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GST_CAT_DEBUG (GST_CAT_VULKAN_BUFFER_MEMORY,
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"new Vulkan Buffer memory:%p size:%" G_GSIZE_FORMAT, mem, maxsize);
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}
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static GstVulkanBufferMemory *
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_vk_buffer_mem_new_alloc (GstAllocator * allocator, GstMemory * parent,
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GstVulkanDevice * device, VkFormat format, gsize size,
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VkBufferUsageFlags usage, VkMemoryPropertyFlags mem_prop_flags,
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gpointer user_data, GDestroyNotify notify)
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{
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GstVulkanBufferMemory *mem = NULL;
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GstAllocationParams params = { 0, };
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VkBufferCreateInfo buffer_info;
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GError *error = NULL;
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guint32 type_idx;
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VkBuffer buffer;
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VkResult err;
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if (!_create_info_from_args (&buffer_info, size, usage)) {
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GST_CAT_ERROR (GST_CAT_VULKAN_BUFFER_MEMORY, "Incorrect buffer parameters");
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goto error;
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}
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err = vkCreateBuffer (device->device, &buffer_info, NULL, &buffer);
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if (gst_vulkan_error_to_g_error (err, &error, "vkCreateBuffer") < 0)
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goto vk_error;
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mem = g_new0 (GstVulkanBufferMemory, 1);
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vkGetBufferMemoryRequirements (device->device, buffer, &mem->requirements);
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/* XXX: assumes alignment is a power of 2 */
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params.align = mem->requirements.alignment - 1;
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_vk_buffer_mem_init (mem, allocator, parent, device, usage, ¶ms,
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mem->requirements.size, user_data, notify);
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mem->buffer = buffer;
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if (!gst_vulkan_memory_find_memory_type_index_with_type_properties (device,
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mem->requirements.memoryTypeBits, mem_prop_flags, &type_idx))
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goto error;
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mem->vk_mem = (GstVulkanMemory *) gst_vulkan_memory_alloc (device, type_idx,
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¶ms, mem->requirements.size, mem_prop_flags);
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if (!mem->vk_mem)
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goto error;
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err = vkBindBufferMemory (device->device, buffer, mem->vk_mem->mem_ptr, 0);
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if (gst_vulkan_error_to_g_error (err, &error, "vkBindBufferMemory") < 0)
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goto vk_error;
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return mem;
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vk_error:
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{
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GST_CAT_ERROR (GST_CAT_VULKAN_BUFFER_MEMORY,
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"Failed to allocate buffer memory %s", error->message);
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g_clear_error (&error);
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goto error;
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}
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error:
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{
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if (mem)
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gst_memory_unref ((GstMemory *) mem);
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return NULL;
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}
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}
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static GstVulkanBufferMemory *
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_vk_buffer_mem_new_wrapped (GstAllocator * allocator, GstMemory * parent,
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GstVulkanDevice * device, VkBuffer buffer, VkFormat format,
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VkBufferUsageFlags usage, gpointer user_data, GDestroyNotify notify)
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{
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GstVulkanBufferMemory *mem = g_new0 (GstVulkanBufferMemory, 1);
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GstAllocationParams params = { 0, };
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mem->buffer = buffer;
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vkGetBufferMemoryRequirements (device->device, mem->buffer,
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&mem->requirements);
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params.align = mem->requirements.alignment - 1;
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params.flags = GST_MEMORY_FLAG_NOT_MAPPABLE;
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_vk_buffer_mem_init (mem, allocator, parent, device, usage, ¶ms,
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mem->requirements.size, user_data, notify);
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mem->wrapped = TRUE;
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return mem;
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}
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static gpointer
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_vk_buffer_mem_map_full (GstVulkanBufferMemory * mem, GstMapInfo * info,
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gsize size)
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{
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GstMapInfo *vk_map_info;
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/* FIXME: possible barrier needed */
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g_mutex_lock (&mem->lock);
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if (!mem->vk_mem) {
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g_mutex_unlock (&mem->lock);
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return NULL;
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}
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vk_map_info = g_new0 (GstMapInfo, 1);
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info->user_data[0] = vk_map_info;
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if (!gst_memory_map ((GstMemory *) mem->vk_mem, vk_map_info, info->flags)) {
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g_free (vk_map_info);
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g_mutex_unlock (&mem->lock);
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return NULL;
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}
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g_mutex_unlock (&mem->lock);
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return vk_map_info->data;
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}
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static void
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_vk_buffer_mem_unmap_full (GstVulkanBufferMemory * mem, GstMapInfo * info)
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{
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g_mutex_lock (&mem->lock);
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gst_memory_unmap ((GstMemory *) mem->vk_mem, info->user_data[0]);
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g_mutex_unlock (&mem->lock);
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g_free (info->user_data[0]);
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}
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static GstMemory *
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_vk_buffer_mem_copy (GstVulkanBufferMemory * src, gssize offset, gssize size)
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{
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return NULL;
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}
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static GstMemory *
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_vk_buffer_mem_share (GstVulkanBufferMemory * mem, gssize offset, gssize size)
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{
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return NULL;
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}
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static gboolean
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_vk_buffer_mem_is_span (GstVulkanBufferMemory * mem1,
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GstVulkanBufferMemory * mem2, gsize * offset)
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{
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return FALSE;
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}
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static GstMemory *
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_vk_buffer_mem_alloc (GstAllocator * allocator, gsize size,
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GstAllocationParams * params)
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{
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g_critical ("Subclass should override GstAllocatorClass::alloc() function");
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return NULL;
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}
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static void
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_vk_buffer_mem_free (GstAllocator * allocator, GstMemory * memory)
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{
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GstVulkanBufferMemory *mem = (GstVulkanBufferMemory *) memory;
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GST_CAT_TRACE (GST_CAT_VULKAN_BUFFER_MEMORY, "freeing buffer memory:%p "
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"id:%" G_GUINT64_FORMAT, mem, (guint64) mem->buffer);
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if (mem->buffer && !mem->wrapped)
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vkDestroyBuffer (mem->device->device, mem->buffer, NULL);
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if (mem->vk_mem)
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gst_memory_unref ((GstMemory *) mem->vk_mem);
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if (mem->notify)
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mem->notify (mem->user_data);
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gst_object_unref (mem->device);
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}
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/**
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* gst_vulkan_buffer_memory_alloc:
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* @device:a #GstVulkanDevice
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* @memory_type_index: the Vulkan memory type index
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* @params: a #GstAllocationParams
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* @size: the size to allocate
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*
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* Allocated a new #GstVulkanBufferMemory.
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*
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* Returns: a #GstMemory object backed by a vulkan device memory
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*/
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GstMemory *
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gst_vulkan_buffer_memory_alloc (GstVulkanDevice * device, VkFormat format,
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gsize size, VkBufferUsageFlags usage, VkMemoryPropertyFlags mem_prop_flags)
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{
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GstVulkanBufferMemory *mem;
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mem = _vk_buffer_mem_new_alloc (_vulkan_buffer_memory_allocator, NULL, device,
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format, size, usage, mem_prop_flags, NULL, NULL);
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return (GstMemory *) mem;
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}
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GstMemory *
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gst_vulkan_buffer_memory_wrapped (GstVulkanDevice * device, VkBuffer buffer,
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VkFormat format, VkBufferUsageFlags usage, gpointer user_data,
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GDestroyNotify notify)
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{
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GstVulkanBufferMemory *mem;
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mem =
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_vk_buffer_mem_new_wrapped (_vulkan_buffer_memory_allocator, NULL, device,
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buffer, format, usage, user_data, notify);
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return (GstMemory *) mem;
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}
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G_DEFINE_TYPE (GstVulkanBufferMemoryAllocator,
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gst_vulkan_buffer_memory_allocator, GST_TYPE_ALLOCATOR);
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static void
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gst_vulkan_buffer_memory_allocator_class_init
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(GstVulkanBufferMemoryAllocatorClass * klass)
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{
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GstAllocatorClass *allocator_class = (GstAllocatorClass *) klass;
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allocator_class->alloc = _vk_buffer_mem_alloc;
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allocator_class->free = _vk_buffer_mem_free;
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}
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static void
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gst_vulkan_buffer_memory_allocator_init (GstVulkanBufferMemoryAllocator *
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allocator)
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{
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GstAllocator *alloc = GST_ALLOCATOR_CAST (allocator);
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alloc->mem_type = GST_VULKAN_BUFFER_MEMORY_ALLOCATOR_NAME;
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alloc->mem_map_full = (GstMemoryMapFullFunction) _vk_buffer_mem_map_full;
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alloc->mem_unmap_full =
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(GstMemoryUnmapFullFunction) _vk_buffer_mem_unmap_full;
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alloc->mem_copy = (GstMemoryCopyFunction) _vk_buffer_mem_copy;
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alloc->mem_share = (GstMemoryShareFunction) _vk_buffer_mem_share;
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alloc->mem_is_span = (GstMemoryIsSpanFunction) _vk_buffer_mem_is_span;
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}
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/**
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* gst_vulkan_buffer_memory_init_once:
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*
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* Initializes the Vulkan memory allocator. It is safe to call this function
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* multiple times. This must be called before any other #GstVulkanBufferMemory operation.
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*/
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void
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gst_vulkan_buffer_memory_init_once (void)
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{
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static volatile gsize _init = 0;
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if (g_once_init_enter (&_init)) {
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GST_DEBUG_CATEGORY_INIT (GST_CAT_VULKAN_BUFFER_MEMORY, "vulkanbuffermemory",
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0, "Vulkan Buffer Memory");
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_vulkan_buffer_memory_allocator =
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g_object_new (gst_vulkan_buffer_memory_allocator_get_type (), NULL);
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gst_allocator_register (GST_VULKAN_BUFFER_MEMORY_ALLOCATOR_NAME,
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gst_object_ref (_vulkan_buffer_memory_allocator));
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g_once_init_leave (&_init, 1);
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}
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}
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/**
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* gst_is_vulkan_buffer_memory:
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* @mem:a #GstMemory
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*
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* Returns: whether the memory at @mem is a #GstVulkanBufferMemory
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*/
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gboolean
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gst_is_vulkan_buffer_memory (GstMemory * mem)
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{
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return mem != NULL && mem->allocator != NULL &&
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g_type_is_a (G_OBJECT_TYPE (mem->allocator),
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GST_TYPE_VULKAN_BUFFER_MEMORY_ALLOCATOR);
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}
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