gstreamer/subprojects/gst-plugins-bad/gst-libs/gst/vulkan/gstvkqueue.c

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/*
* GStreamer
* Copyright (C) 2015 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 "gstvkqueue.h"
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/**
* SECTION:vkqueue
* @title: GstVulkanQueue
* @short_description: Vulkan command queue
* @see_also: #GstVulkanDevice
*
* GstVulkanQueue encapsulates the vulkan command queue.
*/
#define GST_CAT_DEFAULT gst_vulkan_queue_debug
GST_DEBUG_CATEGORY (GST_CAT_DEFAULT);
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GST_DEBUG_CATEGORY_STATIC (GST_CAT_CONTEXT);
static void
_init_debug (void)
{
static gsize init;
if (g_once_init_enter (&init)) {
GST_DEBUG_CATEGORY_INIT (GST_CAT_DEFAULT, "vulkanqueue", 0, "Vulkan Queue");
GST_DEBUG_CATEGORY_GET (GST_CAT_CONTEXT, "GST_CONTEXT");
g_once_init_leave (&init, 1);
}
}
struct _GstVulkanQueuePrivate
{
GMutex submit_lock;
};
#define parent_class gst_vulkan_queue_parent_class
G_DEFINE_TYPE_WITH_CODE (GstVulkanQueue, gst_vulkan_queue, GST_TYPE_OBJECT,
G_ADD_PRIVATE (GstVulkanQueue); _init_debug ());
#define GET_PRIV(queue) gst_vulkan_queue_get_instance_private (queue)
static void gst_vulkan_queue_dispose (GObject * object);
static void
gst_vulkan_queue_init (GstVulkanQueue * queue)
{
GstVulkanQueuePrivate *priv = GET_PRIV (queue);
g_mutex_init (&priv->submit_lock);
}
static void
gst_vulkan_queue_class_init (GstVulkanQueueClass * queue_class)
{
GObjectClass *gobject_class = (GObjectClass *) queue_class;
gobject_class->dispose = gst_vulkan_queue_dispose;
}
static void
gst_vulkan_queue_dispose (GObject * object)
{
GstVulkanQueue *queue = GST_VULKAN_QUEUE (object);
GstVulkanQueuePrivate *priv = GET_PRIV (queue);
if (queue->device)
gst_object_unref (queue->device);
queue->device = NULL;
g_mutex_clear (&priv->submit_lock);
G_OBJECT_CLASS (parent_class)->dispose (object);
}
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/**
* gst_vulkan_queue_get_device
* @queue: a #GstVulkanQueue
*
* Returns: (transfer full): the #GstVulkanDevice for @queue
*
* Since: 1.18
*/
GstVulkanDevice *
gst_vulkan_queue_get_device (GstVulkanQueue * queue)
{
g_return_val_if_fail (GST_IS_VULKAN_QUEUE (queue), NULL);
return queue->device ? gst_object_ref (queue->device) : NULL;
}
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/**
* gst_vulkan_queue_create_command_pool:
* @queue: a #GstVulkanQueue
* @error: a #GError
*
* Returns: (transfer full): a new #GstVUlkanCommandPool or %NULL
*
* Since: 1.18
*/
GstVulkanCommandPool *
gst_vulkan_queue_create_command_pool (GstVulkanQueue * queue, GError ** error)
{
GstVulkanCommandPool *pool;
VkCommandPoolCreateInfo cmd_pool_info = { 0, };
VkCommandPool vk_pool;
VkResult err;
g_return_val_if_fail (GST_IS_VULKAN_QUEUE (queue), NULL);
cmd_pool_info.sType = VK_STRUCTURE_TYPE_COMMAND_POOL_CREATE_INFO;
cmd_pool_info.pNext = NULL;
cmd_pool_info.queueFamilyIndex = queue->family;
cmd_pool_info.flags = VK_COMMAND_POOL_CREATE_RESET_COMMAND_BUFFER_BIT;
GST_OBJECT_LOCK (queue->device);
err =
vkCreateCommandPool (queue->device->device, &cmd_pool_info, NULL,
&vk_pool);
if (gst_vulkan_error_to_g_error (err, error, "vkCreateCommandPool") < 0) {
GST_OBJECT_LOCK (queue->device);
goto error;
}
GST_OBJECT_UNLOCK (queue->device);
pool = g_object_new (GST_TYPE_VULKAN_COMMAND_POOL, NULL);
gst_object_ref_sink (pool);
pool->queue = gst_object_ref (queue);
pool->pool = vk_pool;
return pool;
error:
return NULL;
}
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/**
* gst_context_set_vulkan_queue:
* @context: a #GstContext
* @queue: a #GstVulkanQueue
*
* Sets @queue on @context
*
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* Since: 1.18
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*/
void
gst_context_set_vulkan_queue (GstContext * context, GstVulkanQueue * queue)
{
GstStructure *s;
g_return_if_fail (context != NULL);
g_return_if_fail (gst_context_is_writable (context));
if (queue)
GST_CAT_LOG (GST_CAT_CONTEXT,
"setting GstVulkanQueue(%" GST_PTR_FORMAT ") on context(%"
GST_PTR_FORMAT ")", queue, context);
s = gst_context_writable_structure (context);
gst_structure_set (s, GST_VULKAN_QUEUE_CONTEXT_TYPE_STR,
GST_TYPE_VULKAN_QUEUE, queue, NULL);
}
/**
* gst_context_get_vulkan_queue:
* @context: a #GstContext
* @queue: resulting #GstVulkanQueue
*
* Returns: Whether @queue was in @context
*
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* Since: 1.18
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*/
gboolean
gst_context_get_vulkan_queue (GstContext * context, GstVulkanQueue ** queue)
{
const GstStructure *s;
gboolean ret;
g_return_val_if_fail (queue != NULL, FALSE);
g_return_val_if_fail (context != NULL, FALSE);
s = gst_context_get_structure (context);
ret = gst_structure_get (s, GST_VULKAN_QUEUE_CONTEXT_TYPE_STR,
GST_TYPE_VULKAN_QUEUE, queue, NULL);
GST_CAT_LOG (GST_CAT_CONTEXT, "got GstVulkanQueue(%" GST_PTR_FORMAT
") from context(%" GST_PTR_FORMAT ")", *queue, context);
return ret;
}
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/**
* gst_vulkan_queue_handle_context_query:
* @element: a #GstElement
* @query: a #GstQuery of type #GST_QUERY_CONTEXT
* @queue: (nullable): the #GstVulkanQueue
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*
* If a #GstVulkanQueue is requested in @query, sets @queue as the reply.
*
* Intended for use with element query handlers to respond to #GST_QUERY_CONTEXT
* for a #GstVulkanQueue.
*
* Returns: whether @query was responded to with @queue
*
* Since: 1.18
*/
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gboolean
gst_vulkan_queue_handle_context_query (GstElement * element, GstQuery * query,
GstVulkanQueue * queue)
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{
gboolean res = FALSE;
const gchar *context_type;
GstContext *context, *old_context;
g_return_val_if_fail (element != NULL, FALSE);
g_return_val_if_fail (query != NULL, FALSE);
g_return_val_if_fail (GST_QUERY_TYPE (query) == GST_QUERY_CONTEXT, FALSE);
if (!queue)
return FALSE;
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gst_query_parse_context_type (query, &context_type);
if (g_strcmp0 (context_type, GST_VULKAN_QUEUE_CONTEXT_TYPE_STR) == 0) {
gst_query_parse_context (query, &old_context);
if (old_context)
context = gst_context_copy (old_context);
else
context = gst_context_new (GST_VULKAN_QUEUE_CONTEXT_TYPE_STR, TRUE);
gst_context_set_vulkan_queue (context, queue);
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gst_query_set_context (query, context);
gst_context_unref (context);
res = queue != NULL;
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}
return res;
}
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/**
* gst_vulkan_queue_run_context_query:
* @element: a #GstElement
* @queue: (inout): a #GstVulkanQueue
*
* Attempt to retrieve a #GstVulkanQueue using #GST_QUERY_CONTEXT from the
* surrounding elements of @element.
*
* Returns: whether @queue contains a valid #GstVulkanQueue
*
* Since: 1.18
*/
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gboolean
gst_vulkan_queue_run_context_query (GstElement * element,
GstVulkanQueue ** queue)
{
GstQuery *query;
g_return_val_if_fail (GST_IS_ELEMENT (element), FALSE);
g_return_val_if_fail (queue != NULL, FALSE);
_init_debug ();
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if (*queue && GST_IS_VULKAN_QUEUE (*queue))
return TRUE;
if ((query =
gst_vulkan_local_context_query (element,
GST_VULKAN_QUEUE_CONTEXT_TYPE_STR))) {
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GstContext *context;
gst_query_parse_context (query, &context);
if (context)
gst_context_get_vulkan_queue (context, queue);
gst_query_unref (query);
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}
GST_DEBUG_OBJECT (element, "found queue %p", *queue);
if (*queue)
return TRUE;
return FALSE;
}
/**
* gst_vulkan_queue_submit_lock:
* @queue: a #GstVulkanQueue
*
* Locks the queue for command submission using `vkQueueSubmit()` to meet the
* Vulkan requirements for externally synchronised resources.
*
* Since: 1.18
*/
void
gst_vulkan_queue_submit_lock (GstVulkanQueue * queue)
{
GstVulkanQueuePrivate *priv = GET_PRIV (queue);
g_mutex_lock (&priv->submit_lock);
}
/**
* gst_vulkan_queue_submit_unlock:
* @queue: a #GstVulkanQueue
*
* Unlocks the queue for command submission using `vkQueueSubmit()`.
*
* See gst_vulkan_queue_submit_lock() for details on when this call is needed.
*
* Since: 1.18
*/
void
gst_vulkan_queue_submit_unlock (GstVulkanQueue * queue)
{
GstVulkanQueuePrivate *priv = GET_PRIV (queue);
g_mutex_unlock (&priv->submit_lock);
}