gstreamer/gst-libs/gst/vulkan/gstvkbuffermemory.c

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/*
* GStreamer
* Copyright (C) 2016 Matthew Waters <matthew@centricular.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "gstvkbuffermemory.h"
/**
* SECTION:vkbuffermemory
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* @title: GstVulkanBufferMemory
* @short_description: memory subclass for Vulkan buffer memory
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* @see_also: #GstVulkanMemory, #GstMemory, #GstAllocator
*
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* #GstVulkanBufferMemory is a #GstMemory subclass providing support for the
* mapping of Vulkan device memory.
*/
#define GST_CAT_DEFUALT GST_CAT_VULKAN_BUFFER_MEMORY
GST_DEBUG_CATEGORY_STATIC (GST_CAT_DEFUALT);
static GstAllocator *_vulkan_buffer_memory_allocator;
static gboolean
_create_info_from_args (VkBufferCreateInfo * info, gsize size,
VkBufferUsageFlags usage)
{
/* FIXME: validate these */
/* *INDENT-OFF* */
*info = (VkBufferCreateInfo) {
.sType = VK_STRUCTURE_TYPE_BUFFER_CREATE_INFO,
.pNext = NULL,
.flags = 0,
.size = size,
.usage = usage,
.sharingMode = VK_SHARING_MODE_EXCLUSIVE,
.queueFamilyIndexCount = 0,
.pQueueFamilyIndices = NULL,
};
/* *INDENT-ON* */
return TRUE;
}
static void
_vk_buffer_mem_init (GstVulkanBufferMemory * mem, GstAllocator * allocator,
GstMemory * parent, GstVulkanDevice * device, VkBufferUsageFlags usage,
GstAllocationParams * params, gsize size, gpointer user_data,
GDestroyNotify notify)
{
gsize align = gst_memory_alignment, offset = 0, maxsize = size;
GstMemoryFlags flags = 0;
if (params) {
flags = params->flags;
align |= params->align;
offset = params->prefix;
maxsize += params->prefix + params->padding + align;
}
gst_memory_init (GST_MEMORY_CAST (mem), flags, allocator, parent, maxsize,
align, offset, size);
mem->device = gst_object_ref (device);
mem->usage = usage;
mem->wrapped = FALSE;
mem->notify = notify;
mem->user_data = user_data;
mem->barrier.parent.type = GST_VULKAN_BARRIER_TYPE_BUFFER;
mem->barrier.parent.pipeline_stages = VK_PIPELINE_STAGE_TOP_OF_PIPE_BIT;
mem->barrier.parent.access_flags = 0;
g_mutex_init (&mem->lock);
GST_CAT_DEBUG (GST_CAT_VULKAN_BUFFER_MEMORY,
"new Vulkan Buffer memory:%p size:%" G_GSIZE_FORMAT, mem, maxsize);
}
static GstVulkanBufferMemory *
_vk_buffer_mem_new_alloc (GstAllocator * allocator, GstMemory * parent,
GstVulkanDevice * device, gsize size, VkBufferUsageFlags usage,
VkMemoryPropertyFlags mem_prop_flags, gpointer user_data,
GDestroyNotify notify)
{
GstVulkanBufferMemory *mem = NULL;
GstAllocationParams params = { 0, };
VkBufferCreateInfo buffer_info;
GError *error = NULL;
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guint32 type_idx;
VkBuffer buffer;
VkResult err;
if (!_create_info_from_args (&buffer_info, size, usage)) {
GST_CAT_ERROR (GST_CAT_VULKAN_BUFFER_MEMORY, "Incorrect buffer parameters");
goto error;
}
err = vkCreateBuffer (device->device, &buffer_info, NULL, &buffer);
if (gst_vulkan_error_to_g_error (err, &error, "vkCreateBuffer") < 0)
goto vk_error;
mem = g_new0 (GstVulkanBufferMemory, 1);
vkGetBufferMemoryRequirements (device->device, buffer, &mem->requirements);
if ((mem->requirements.alignment & (mem->requirements.alignment - 1)) != 0) {
g_set_error_literal (&error, GST_VULKAN_ERROR, GST_VULKAN_FAILED,
"Vulkan implementation requires unsupported non-power-of 2 memory alignment");
goto vk_error;
}
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params.align = mem->requirements.alignment - 1;
_vk_buffer_mem_init (mem, allocator, parent, device, usage, &params, size,
user_data, notify);
mem->buffer = buffer;
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if (!gst_vulkan_memory_find_memory_type_index_with_type_properties (device,
mem->requirements.memoryTypeBits, mem_prop_flags, &type_idx))
goto error;
mem->vk_mem = (GstVulkanMemory *) gst_vulkan_memory_alloc (device, type_idx,
&params, mem->requirements.size, mem_prop_flags);
if (!mem->vk_mem)
goto error;
err = vkBindBufferMemory (device->device, buffer, mem->vk_mem->mem_ptr, 0);
if (gst_vulkan_error_to_g_error (err, &error, "vkBindBufferMemory") < 0)
goto vk_error;
return mem;
vk_error:
{
GST_CAT_ERROR (GST_CAT_VULKAN_BUFFER_MEMORY,
"Failed to allocate buffer memory %s", error->message);
g_clear_error (&error);
goto error;
}
error:
{
if (mem)
gst_memory_unref ((GstMemory *) mem);
return NULL;
}
}
static GstVulkanBufferMemory *
_vk_buffer_mem_new_wrapped (GstAllocator * allocator, GstMemory * parent,
GstVulkanDevice * device, VkBuffer buffer, VkBufferUsageFlags usage,
gpointer user_data, GDestroyNotify notify)
{
GstVulkanBufferMemory *mem = g_new0 (GstVulkanBufferMemory, 1);
GstAllocationParams params = { 0, };
mem->buffer = buffer;
vkGetBufferMemoryRequirements (device->device, mem->buffer,
&mem->requirements);
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params.align = mem->requirements.alignment - 1;
params.flags = GST_MEMORY_FLAG_NOT_MAPPABLE;
_vk_buffer_mem_init (mem, allocator, parent, device, usage, &params,
mem->requirements.size, user_data, notify);
mem->wrapped = TRUE;
return mem;
}
static gpointer
_vk_buffer_mem_map_full (GstVulkanBufferMemory * mem, GstMapInfo * info,
gsize size)
{
GstMapInfo *vk_map_info;
/* FIXME: possible barrier needed */
g_mutex_lock (&mem->lock);
if (!mem->vk_mem) {
g_mutex_unlock (&mem->lock);
return NULL;
}
vk_map_info = g_new0 (GstMapInfo, 1);
info->user_data[0] = vk_map_info;
if (!gst_memory_map ((GstMemory *) mem->vk_mem, vk_map_info, info->flags)) {
g_free (vk_map_info);
g_mutex_unlock (&mem->lock);
return NULL;
}
g_mutex_unlock (&mem->lock);
return vk_map_info->data;
}
static void
_vk_buffer_mem_unmap_full (GstVulkanBufferMemory * mem, GstMapInfo * info)
{
g_mutex_lock (&mem->lock);
gst_memory_unmap ((GstMemory *) mem->vk_mem, info->user_data[0]);
g_mutex_unlock (&mem->lock);
g_free (info->user_data[0]);
}
static GstMemory *
_vk_buffer_mem_copy (GstVulkanBufferMemory * src, gssize offset, gssize size)
{
return NULL;
}
static GstMemory *
_vk_buffer_mem_share (GstVulkanBufferMemory * mem, gssize offset, gssize size)
{
return NULL;
}
static gboolean
_vk_buffer_mem_is_span (GstVulkanBufferMemory * mem1,
GstVulkanBufferMemory * mem2, gsize * offset)
{
return FALSE;
}
static GstMemory *
_vk_buffer_mem_alloc (GstAllocator * allocator, gsize size,
GstAllocationParams * params)
{
g_critical ("Subclass should override GstAllocatorClass::alloc() function");
return NULL;
}
static void
_vk_buffer_mem_free (GstAllocator * allocator, GstMemory * memory)
{
GstVulkanBufferMemory *mem = (GstVulkanBufferMemory *) memory;
GST_CAT_TRACE (GST_CAT_VULKAN_BUFFER_MEMORY, "freeing buffer memory:%p "
"id:%" G_GUINT64_FORMAT, mem, (guint64) mem->buffer);
if (mem->buffer && !mem->wrapped)
vkDestroyBuffer (mem->device->device, mem->buffer, NULL);
if (mem->vk_mem)
gst_memory_unref ((GstMemory *) mem->vk_mem);
if (mem->notify)
mem->notify (mem->user_data);
gst_object_unref (mem->device);
g_free (mem);
}
/**
* gst_vulkan_buffer_memory_alloc:
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* @device: a #GstVulkanDevice
* @size: size of the new buffer
* @usage: buffer usage flags
* @mem_prop_flags: memory properties flags for the backing memory
*
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* Allocate a new #GstVulkanBufferMemory.
*
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* Returns: (transfer full): a #GstMemory object backed by a vulkan buffer
* backed by vulkan device memory
*
* Since: 1.18
*/
GstMemory *
gst_vulkan_buffer_memory_alloc (GstVulkanDevice * device, gsize size,
VkBufferUsageFlags usage, VkMemoryPropertyFlags mem_prop_flags)
{
GstVulkanBufferMemory *mem;
mem = _vk_buffer_mem_new_alloc (_vulkan_buffer_memory_allocator, NULL, device,
size, usage, mem_prop_flags, NULL, NULL);
return (GstMemory *) mem;
}
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/**
* gst_vulkan_buffer_memory_wrapped:
* @device: a #GstVulkanDevice
* @buffer: a #VkBuffer
* @usage: usage flags of @buffer
* @user_data: (allow-none): user data to call @notify with
* @notify: (allow-none): a #GDestroyNotify called when @buffer is no longer in use
*
* Allocated a new wrapped #GstVulkanBufferMemory with @buffer.
*
* Returns: (transfer full): a #GstMemory object backed by a vulkan device memory
*
* Since: 1.18
*/
GstMemory *
gst_vulkan_buffer_memory_wrapped (GstVulkanDevice * device, VkBuffer buffer,
VkBufferUsageFlags usage, gpointer user_data, GDestroyNotify notify)
{
GstVulkanBufferMemory *mem;
mem =
_vk_buffer_mem_new_wrapped (_vulkan_buffer_memory_allocator, NULL, device,
buffer, usage, user_data, notify);
return (GstMemory *) mem;
}
G_DEFINE_TYPE (GstVulkanBufferMemoryAllocator,
gst_vulkan_buffer_memory_allocator, GST_TYPE_ALLOCATOR);
static void
gst_vulkan_buffer_memory_allocator_class_init
(GstVulkanBufferMemoryAllocatorClass * klass)
{
GstAllocatorClass *allocator_class = (GstAllocatorClass *) klass;
allocator_class->alloc = _vk_buffer_mem_alloc;
allocator_class->free = _vk_buffer_mem_free;
}
static void
gst_vulkan_buffer_memory_allocator_init (GstVulkanBufferMemoryAllocator *
allocator)
{
GstAllocator *alloc = GST_ALLOCATOR_CAST (allocator);
alloc->mem_type = GST_VULKAN_BUFFER_MEMORY_ALLOCATOR_NAME;
alloc->mem_map_full = (GstMemoryMapFullFunction) _vk_buffer_mem_map_full;
alloc->mem_unmap_full =
(GstMemoryUnmapFullFunction) _vk_buffer_mem_unmap_full;
alloc->mem_copy = (GstMemoryCopyFunction) _vk_buffer_mem_copy;
alloc->mem_share = (GstMemoryShareFunction) _vk_buffer_mem_share;
alloc->mem_is_span = (GstMemoryIsSpanFunction) _vk_buffer_mem_is_span;
}
/**
* gst_vulkan_buffer_memory_init_once:
*
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* Initializes the Vulkan buffer memory allocator. It is safe to call this function
* multiple times. This must be called before any other #GstVulkanBufferMemory operation.
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*
* Since: 1.18
*/
void
gst_vulkan_buffer_memory_init_once (void)
{
static volatile gsize _init = 0;
if (g_once_init_enter (&_init)) {
GST_DEBUG_CATEGORY_INIT (GST_CAT_VULKAN_BUFFER_MEMORY, "vulkanbuffermemory",
0, "Vulkan Buffer Memory");
_vulkan_buffer_memory_allocator =
g_object_new (gst_vulkan_buffer_memory_allocator_get_type (), NULL);
gst_object_ref_sink (_vulkan_buffer_memory_allocator);
gst_allocator_register (GST_VULKAN_BUFFER_MEMORY_ALLOCATOR_NAME,
gst_object_ref (_vulkan_buffer_memory_allocator));
g_once_init_leave (&_init, 1);
}
}
/**
* gst_is_vulkan_buffer_memory:
* @mem:a #GstMemory
*
* Returns: whether the memory at @mem is a #GstVulkanBufferMemory
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*
* Since: 1.18
*/
gboolean
gst_is_vulkan_buffer_memory (GstMemory * mem)
{
return mem != NULL && mem->allocator != NULL &&
g_type_is_a (G_OBJECT_TYPE (mem->allocator),
GST_TYPE_VULKAN_BUFFER_MEMORY_ALLOCATOR);
}