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1c89096b4f
Allows a cleaner control flow when there is no fence available for use with the trash list. An always signalled fence type will always return TRUE for gst_vulkan_fence_is_signalled.
155 lines
3.9 KiB
C
155 lines
3.9 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 "gstvkfence.h"
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/**
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* SECTION:vkfence
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* @title: GstVulkanFence
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* @short_description: Vulkan fences
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* @see_also: #GstVulkanDevice
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*
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* A #GstVulkanFence encapsulates a VkFence
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*/
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GST_DEBUG_CATEGORY (gst_debug_vulkan_fence);
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#define GST_CAT_DEFAULT gst_debug_vulkan_fence
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static void
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_init_debug (void)
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{
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static volatile gsize init;
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if (g_once_init_enter (&init)) {
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GST_DEBUG_CATEGORY_INIT (gst_debug_vulkan_fence,
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"vulkanfence", 0, "Vulkan Fence");
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g_once_init_leave (&init, 1);
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}
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}
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static void
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gst_vulkan_fence_free (GstVulkanFence * fence)
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{
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if (!fence)
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return;
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GST_TRACE ("Freeing fence %p", fence);
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if (fence->fence)
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vkDestroyFence (fence->device->device, fence->fence, NULL);
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gst_object_unref (fence->device);
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g_free (fence);
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}
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/**
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* gst_vulkan_fence_new:
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* @device: the parent #GstVulkanDevice
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* @flags: set of flags to create the fence with
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* @error: a #GError for the failure condition
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*
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* Returns: whether a new #GstVulkanFence or %NULL on error
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*
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* Since: 1.18
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*/
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GstVulkanFence *
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gst_vulkan_fence_new (GstVulkanDevice * device, VkFenceCreateFlags flags,
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GError ** error)
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{
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VkFenceCreateInfo fence_info = { 0, };
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GstVulkanFence *fence;
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VkResult err;
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_init_debug ();
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g_return_val_if_fail (GST_IS_VULKAN_DEVICE (device), FALSE);
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fence = g_new0 (GstVulkanFence, 1);
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GST_TRACE ("Creating fence %p with device %" GST_PTR_FORMAT, fence, device);
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fence->device = gst_object_ref (device);
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fence_info.sType = VK_STRUCTURE_TYPE_FENCE_CREATE_INFO;
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fence_info.pNext = NULL;
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fence_info.flags = flags;
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err = vkCreateFence (device->device, &fence_info, NULL, &fence->fence);
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if (gst_vulkan_error_to_g_error (err, error, "vkCreateFence") < 0) {
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gst_clear_object (&fence->device);
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g_free (fence);
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return NULL;
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}
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gst_mini_object_init (GST_MINI_OBJECT_CAST (fence), 0, GST_TYPE_VULKAN_FENCE,
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NULL, NULL, (GstMiniObjectFreeFunction) gst_vulkan_fence_free);
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return fence;
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}
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/**
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* gst_vulkan_fence_new_always_signalled:
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*
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* Returns: a new #GstVulkanFence that is always in the signalled state
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*/
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GstVulkanFence *
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gst_vulkan_fence_new_always_signalled (GstVulkanDevice * device)
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{
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GstVulkanFence *fence;
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g_return_val_if_fail (GST_IS_VULKAN_DEVICE (device), FALSE);
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_init_debug ();
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fence = g_new0 (GstVulkanFence, 1);
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GST_TRACE ("Creating always-signalled fence %p with device %" GST_PTR_FORMAT,
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fence, device);
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fence->device = gst_object_ref (device);
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fence->fence = VK_NULL_HANDLE;
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gst_mini_object_init (GST_MINI_OBJECT_CAST (fence), 0, GST_TYPE_VULKAN_FENCE,
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NULL, NULL, (GstMiniObjectFreeFunction) gst_vulkan_fence_free);
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return fence;
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}
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/**
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* gst_vulkan_fence_is_signaled:
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* @fence: a #GstVulkanFence
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*
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* Returns: whether @fence has been signalled
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*
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* Since: 1.18
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*/
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gboolean
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gst_vulkan_fence_is_signaled (GstVulkanFence * fence)
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{
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g_return_val_if_fail (fence != NULL, FALSE);
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if (!fence->fence)
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return TRUE;
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return vkGetFenceStatus (fence->device->device, fence->fence) == VK_SUCCESS;
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}
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GST_DEFINE_MINI_OBJECT_TYPE (GstVulkanFence, gst_vulkan_fence);
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