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

275 lines
6.7 KiB
C

/*
* 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 "gstvkfence.h"
#include "gstvkdevice.h"
/**
* SECTION:vkfence
* @title: GstVulkanFence
* @short_description: Vulkan fences
* @see_also: #GstVulkanDevice
*
* A #GstVulkanFence encapsulates a VkFence
*/
GST_DEBUG_CATEGORY (gst_debug_vulkan_fence);
#define GST_CAT_DEFAULT gst_debug_vulkan_fence
#define gst_vulkan_fence_cache_release(c,f) gst_vulkan_handle_pool_release(GST_VULKAN_HANDLE_POOL (c), f)
static void
_init_debug (void)
{
static volatile gsize init;
if (g_once_init_enter (&init)) {
GST_DEBUG_CATEGORY_INIT (gst_debug_vulkan_fence,
"vulkanfence", 0, "Vulkan Fence");
g_once_init_leave (&init, 1);
}
}
static gboolean
gst_vulkan_fence_dispose (GstVulkanFence * fence)
{
GstVulkanFenceCache *cache;
/* no pool, do free */
if ((cache = fence->cache) == NULL)
return TRUE;
/* keep the buffer alive */
gst_vulkan_fence_ref (fence);
/* return the buffer to the cache */
gst_vulkan_fence_cache_release (cache, fence);
return FALSE;
}
static void
gst_vulkan_fence_free (GstVulkanFence * fence)
{
if (!fence)
return;
GST_TRACE ("Freeing fence %p", fence);
if (fence->fence)
vkDestroyFence (fence->device->device, fence->fence, NULL);
gst_clear_object (&fence->device);
g_free (fence);
}
/**
* gst_vulkan_fence_new:
* @device: the parent #GstVulkanDevice
* @error: a #GError for the failure condition
*
* Returns: whether a new #GstVulkanFence or %NULL on error
*
* Since: 1.18
*/
GstVulkanFence *
gst_vulkan_fence_new (GstVulkanDevice * device, GError ** error)
{
VkFenceCreateInfo fence_info = { 0, };
GstVulkanFence *fence;
VkResult err;
_init_debug ();
g_return_val_if_fail (GST_IS_VULKAN_DEVICE (device), FALSE);
fence = g_new0 (GstVulkanFence, 1);
GST_TRACE ("Creating fence %p with device %" GST_PTR_FORMAT, fence, device);
fence->device = gst_object_ref (device);
fence_info.sType = VK_STRUCTURE_TYPE_FENCE_CREATE_INFO;
fence_info.pNext = NULL;
fence_info.flags = 0;
err = vkCreateFence (device->device, &fence_info, NULL, &fence->fence);
if (gst_vulkan_error_to_g_error (err, error, "vkCreateFence") < 0) {
gst_clear_object (&fence->device);
g_free (fence);
return NULL;
}
gst_mini_object_init (GST_MINI_OBJECT_CAST (fence), 0, GST_TYPE_VULKAN_FENCE,
NULL, (GstMiniObjectDisposeFunction) gst_vulkan_fence_dispose,
(GstMiniObjectFreeFunction) gst_vulkan_fence_free);
return fence;
}
/**
* gst_vulkan_fence_new_always_signalled:
*
* Returns: a new #GstVulkanFence that is always in the signalled state
*
* Since: 1.18
*/
GstVulkanFence *
gst_vulkan_fence_new_always_signalled (GstVulkanDevice * device)
{
GstVulkanFence *fence;
g_return_val_if_fail (GST_IS_VULKAN_DEVICE (device), FALSE);
_init_debug ();
fence = g_new0 (GstVulkanFence, 1);
GST_TRACE ("Creating always-signalled fence %p with device %" GST_PTR_FORMAT,
fence, device);
fence->device = gst_object_ref (device);
fence->fence = VK_NULL_HANDLE;
gst_mini_object_init (GST_MINI_OBJECT_CAST (fence), 0, GST_TYPE_VULKAN_FENCE,
NULL, NULL, (GstMiniObjectFreeFunction) gst_vulkan_fence_free);
return fence;
}
/**
* gst_vulkan_fence_is_signaled:
* @fence: a #GstVulkanFence
*
* Returns: whether @fence has been signalled
*
* Since: 1.18
*/
gboolean
gst_vulkan_fence_is_signaled (GstVulkanFence * fence)
{
g_return_val_if_fail (fence != NULL, FALSE);
if (!fence->fence)
return TRUE;
return vkGetFenceStatus (fence->device->device, fence->fence) == VK_SUCCESS;
}
void
gst_vulkan_fence_reset (GstVulkanFence * fence)
{
g_return_if_fail (fence != NULL);
if (!fence->fence)
return;
GST_TRACE ("resetting fence %p", fence);
vkResetFences (fence->device->device, 1, &fence->fence);
}
GST_DEFINE_MINI_OBJECT_TYPE (GstVulkanFence, gst_vulkan_fence);
#define parent_class gst_vulkan_fence_cache_parent_class
G_DEFINE_TYPE_WITH_CODE (GstVulkanFenceCache, gst_vulkan_fence_cache,
GST_TYPE_VULKAN_HANDLE_POOL, _init_debug ());
GstVulkanFenceCache *
gst_vulkan_fence_cache_new (GstVulkanDevice * device)
{
GstVulkanFenceCache *ret;
GstVulkanHandlePool *pool;
g_return_val_if_fail (GST_IS_VULKAN_DEVICE (device), NULL);
ret = g_object_new (GST_TYPE_VULKAN_FENCE_CACHE, NULL);
pool = GST_VULKAN_HANDLE_POOL (ret);
pool->device = gst_object_ref (device);
gst_object_ref_sink (ret);
return ret;
}
static gpointer
gst_vulkan_fence_cache_alloc (GstVulkanHandlePool * pool, GError ** error)
{
return gst_vulkan_fence_new (pool->device, error);
}
static gpointer
gst_vulkan_fence_cache_acquire_impl (GstVulkanHandlePool * pool,
GError ** error)
{
GstVulkanFence *fence;
if ((fence =
GST_VULKAN_HANDLE_POOL_CLASS (parent_class)->acquire (pool, error))) {
fence->cache = gst_object_ref (pool);
if (!fence->device)
fence->device = gst_object_ref (pool->device);
}
return fence;
}
static void
gst_vulkan_fence_cache_release_impl (GstVulkanHandlePool * pool,
gpointer handle)
{
GstVulkanFence *fence = handle;
gst_vulkan_fence_reset (fence);
GST_VULKAN_HANDLE_POOL_CLASS (parent_class)->release (pool, handle);
if (fence) {
gst_clear_object (&fence->cache);
gst_clear_object (&fence->device);
}
}
static void
gst_vulkan_fence_cache_free (GstVulkanHandlePool * pool, gpointer handle)
{
GstVulkanFence *fence = handle;
if (!fence->device)
fence->device = gst_object_ref (pool->device);
gst_vulkan_fence_unref (handle);
}
static void
gst_vulkan_fence_cache_init (GstVulkanFenceCache * cache)
{
}
static void
gst_vulkan_fence_cache_class_init (GstVulkanFenceCacheClass * klass)
{
GstVulkanHandlePoolClass *handle_class = (GstVulkanHandlePoolClass *) klass;
handle_class->acquire = gst_vulkan_fence_cache_acquire_impl;
handle_class->alloc = gst_vulkan_fence_cache_alloc;
handle_class->release = gst_vulkan_fence_cache_release_impl;
handle_class->free = gst_vulkan_fence_cache_free;
}