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273 lines
7.7 KiB
C
273 lines
7.7 KiB
C
/*
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* GStreamer
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* Copyright (C) 2019 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 "gstvkcommandpool.h"
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#include "gstvkcommandpool-private.h"
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/**
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* SECTION:vkcommandpool
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* @title: GstVulkanCommandPool
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* @short_description: Vulkan command pool
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* @see_also: #GstVulkanCommandBuffer, #GstVulkanDevice
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*/
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#define GST_VULKAN_COMMAND_POOL_LARGE_OUTSTANDING 1024
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#define GET_PRIV(pool) gst_vulkan_command_pool_get_instance_private (pool)
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#define GST_CAT_DEFAULT gst_vulkan_command_pool_debug
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GST_DEBUG_CATEGORY (GST_CAT_DEFAULT);
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struct _GstVulkanCommandPoolPrivate
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{
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GQueue *available;
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GRecMutex rec_mutex;
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gsize outstanding;
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};
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#define parent_class gst_vulkan_command_pool_parent_class
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G_DEFINE_TYPE_WITH_CODE (GstVulkanCommandPool, gst_vulkan_command_pool,
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GST_TYPE_OBJECT, G_ADD_PRIVATE (GstVulkanCommandPool);
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GST_DEBUG_CATEGORY_INIT (GST_CAT_DEFAULT,
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"vulkancommandpool", 0, "Vulkan Command Pool"));
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static void gst_vulkan_command_pool_finalize (GObject * object);
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static void
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gst_vulkan_command_pool_init (GstVulkanCommandPool * pool)
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{
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GstVulkanCommandPoolPrivate *priv = GET_PRIV (pool);
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g_rec_mutex_init (&priv->rec_mutex);
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priv->available = g_queue_new ();
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}
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static void
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gst_vulkan_command_pool_class_init (GstVulkanCommandPoolClass * device_class)
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{
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GObjectClass *gobject_class = (GObjectClass *) device_class;
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gobject_class->finalize = gst_vulkan_command_pool_finalize;
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}
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static void
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do_free_buffer (GstVulkanCommandBuffer * cmd_buf)
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{
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gst_vulkan_command_buffer_unref (cmd_buf);
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}
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static void
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gst_vulkan_command_pool_finalize (GObject * object)
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{
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GstVulkanCommandPool *pool = GST_VULKAN_COMMAND_POOL (object);
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GstVulkanCommandPoolPrivate *priv = GET_PRIV (pool);
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gst_vulkan_command_pool_lock (pool);
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g_queue_free_full (priv->available, (GDestroyNotify) do_free_buffer);
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priv->available = NULL;
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gst_vulkan_command_pool_unlock (pool);
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if (priv->outstanding > 0)
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g_critical
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("Destroying a Vulkan command pool that has outstanding buffers!");
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if (pool->pool)
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vkDestroyCommandPool (pool->queue->device->device, pool->pool, NULL);
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pool->pool = VK_NULL_HANDLE;
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gst_clear_object (&pool->queue);
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g_rec_mutex_clear (&priv->rec_mutex);
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G_OBJECT_CLASS (parent_class)->finalize (object);
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}
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/**
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* gst_vulkan_command_pool_get_queue
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* @pool: a #GstVulkanCommandPool
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*
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* Returns: (transfer full): the parent #GstVulkanQueue for this command pool
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*
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* Since: 1.18
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*/
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GstVulkanQueue *
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gst_vulkan_command_pool_get_queue (GstVulkanCommandPool * pool)
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{
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g_return_val_if_fail (GST_IS_VULKAN_COMMAND_POOL (pool), NULL);
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return pool->queue ? gst_object_ref (pool->queue) : NULL;
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}
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static GstVulkanCommandBuffer *
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command_alloc (GstVulkanCommandPool * pool, GError ** error)
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{
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VkResult err;
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VkCommandBufferAllocateInfo cmd_info = { 0, };
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GstVulkanCommandBuffer *buf;
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VkCommandBuffer cmd;
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cmd_info.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_ALLOCATE_INFO;
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cmd_info.pNext = NULL;
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cmd_info.commandPool = pool->pool;
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cmd_info.level = VK_COMMAND_BUFFER_LEVEL_PRIMARY;
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cmd_info.commandBufferCount = 1;
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gst_vulkan_command_pool_lock (pool);
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err = vkAllocateCommandBuffers (pool->queue->device->device, &cmd_info, &cmd);
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gst_vulkan_command_pool_unlock (pool);
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if (gst_vulkan_error_to_g_error (err, error, "vkCreateCommandBuffer") < 0)
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return NULL;
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buf =
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gst_vulkan_command_buffer_new_wrapped (cmd,
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VK_COMMAND_BUFFER_LEVEL_PRIMARY);
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GST_LOG_OBJECT (pool, "created cmd buffer %p", buf);
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return buf;
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}
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static gboolean
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gst_vulkan_command_pool_can_reset (GstVulkanCommandPool * pool)
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{
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g_return_val_if_fail (GST_IS_VULKAN_COMMAND_POOL (pool), FALSE);
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/* whether VK_COMMAND_POOL_CREATE_RESET_COMMAND_BUFFER_BIT was in flags on
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* pool creation */
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return TRUE;
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}
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/**
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* gst_vulkan_command_pool_create:
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* @pool: a #GstVulkanCommandPool
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* @error: a #GError
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*
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* Returns: a new or recycled primary #GstVulkanCommandBuffer
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*
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* Since: 1.18
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*/
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GstVulkanCommandBuffer *
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gst_vulkan_command_pool_create (GstVulkanCommandPool * pool, GError ** error)
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{
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GstVulkanCommandBuffer *cmd = NULL;
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GstVulkanCommandPoolPrivate *priv;
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g_return_val_if_fail (GST_IS_VULKAN_COMMAND_POOL (pool), NULL);
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priv = GET_PRIV (pool);
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if (gst_vulkan_command_pool_can_reset (pool)) {
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gst_vulkan_command_pool_lock (pool);
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cmd = g_queue_pop_head (priv->available);
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gst_vulkan_command_pool_unlock (pool);
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}
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if (!cmd)
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cmd = command_alloc (pool, error);
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if (!cmd)
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return NULL;
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cmd->pool = gst_object_ref (pool);
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gst_vulkan_command_pool_lock (pool);
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priv->outstanding++;
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if (priv->outstanding > GST_VULKAN_COMMAND_POOL_LARGE_OUTSTANDING)
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g_critical ("%s: There are a large number of command buffers outstanding! "
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"This usually means there is a reference counting issue somewhere.",
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GST_OBJECT_NAME (pool));
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gst_vulkan_command_pool_unlock (pool);
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return cmd;
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}
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void
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gst_vulkan_command_pool_release_buffer (GstVulkanCommandPool * pool,
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GstVulkanCommandBuffer * buffer)
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{
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GstVulkanCommandPoolPrivate *priv;
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gboolean can_reset;
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g_return_if_fail (GST_IS_VULKAN_COMMAND_POOL (pool));
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g_return_if_fail (buffer != NULL);
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g_return_if_fail (buffer->pool == pool);
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priv = GET_PRIV (pool);
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can_reset = gst_vulkan_command_pool_can_reset (pool);
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gst_vulkan_command_pool_lock (pool);
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if (can_reset) {
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vkResetCommandBuffer (buffer->cmd, 0);
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g_queue_push_tail (priv->available, buffer);
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GST_TRACE_OBJECT (pool, "reset command buffer %p", buffer);
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}
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/* TODO: if this is a secondary command buffer, all primary command buffers
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* that reference this command buffer will be invalid */
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priv->outstanding--;
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gst_vulkan_command_pool_unlock (pool);
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/* decrease the refcount that the buffer had to us */
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gst_clear_object (&buffer->pool);
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if (!can_reset)
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gst_vulkan_command_buffer_unref (buffer);
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}
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/**
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* gst_vulkan_command_pool_lock:
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* @pool: a #GstVulkanCommandPool
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*
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* This should be called to ensure no other thread will attempt to access
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* the pool's internal resources. Any modification of any of the allocated
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* #GstVulkanCommandBuffer's need to be encapsulated in a
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* gst_vulkan_command_pool_lock()/gst_vulkan_command_pool_unlock() pair to meet
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* the Vulkan API requirements that host access to the command pool is
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* externally synchronised.
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*
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* Since: 1.18
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*/
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void
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gst_vulkan_command_pool_lock (GstVulkanCommandPool * pool)
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{
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GstVulkanCommandPoolPrivate *priv;
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g_return_if_fail (GST_IS_VULKAN_COMMAND_POOL (pool));
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priv = GET_PRIV (pool);
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g_rec_mutex_lock (&priv->rec_mutex);
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}
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/**
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* gst_vulkan_command_pool_unlock:
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* @pool: a #GstVulkanCommandPool
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*
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* See the documentation for gst_vulkan_command_pool_lock() for when you would
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* need to use this function.
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*
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* Since: 1.18
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*/
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void
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gst_vulkan_command_pool_unlock (GstVulkanCommandPool * pool)
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{
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GstVulkanCommandPoolPrivate *priv;
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g_return_if_fail (GST_IS_VULKAN_COMMAND_POOL (pool));
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priv = GET_PRIV (pool);
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g_rec_mutex_unlock (&priv->rec_mutex);
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}
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