mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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340 lines
9.5 KiB
C
340 lines
9.5 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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/**
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* SECTION:vulkanvideofilter
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* @title: GstVulkanVideoFilter
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* @short_description: Vulkan filter base class
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* @see_also: #GstVulkanInstance, #GstVulkanDevice
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*
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* #GstVulkanVideoFilter is a helper base class for retrieving and holding the
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* #GstVulkanInstance, #GstVulkanDevice and #GstVulkanQueue used by an element.
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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 <string.h>
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#include <gst/vulkan/gstvkvideofilter.h>
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GST_DEBUG_CATEGORY (gst_debug_vulkan_video_filter);
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#define GST_CAT_DEFAULT gst_debug_vulkan_video_filter
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static void gst_vulkan_video_filter_finalize (GObject * object);
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static gboolean gst_vulkan_video_filter_query (GstBaseTransform * bt,
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GstPadDirection direction, GstQuery * query);
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static void gst_vulkan_video_filter_set_context (GstElement * element,
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GstContext * context);
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static gboolean gst_vulkan_video_filter_start (GstBaseTransform * bt);
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static gboolean gst_vulkan_video_filter_stop (GstBaseTransform * bt);
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static gboolean gst_vulkan_video_filter_set_caps (GstBaseTransform * bt,
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GstCaps * in_caps, GstCaps * out_caps);
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static GstCaps *gst_vulkan_video_filter_transform_caps (GstBaseTransform *
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bt, GstPadDirection direction, GstCaps * caps, GstCaps * filter);
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static gboolean
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gst_vulkan_video_filter_propose_allocation (GstBaseTransform * bt,
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GstQuery * decide_query, GstQuery * query);
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static gboolean
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gst_vulkan_video_filter_decide_allocation (GstBaseTransform * bt,
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GstQuery * query);
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enum
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{
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PROP_0,
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};
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enum
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{
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SIGNAL_0,
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LAST_SIGNAL
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};
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/* static guint gst_vulkan_video_filter_signals[LAST_SIGNAL] = { 0 }; */
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#define gst_vulkan_video_filter_parent_class parent_class
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G_DEFINE_TYPE_WITH_CODE (GstVulkanVideoFilter,
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gst_vulkan_video_filter, GST_TYPE_BASE_TRANSFORM,
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GST_DEBUG_CATEGORY_INIT (gst_debug_vulkan_video_filter,
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"vulkanvideofilter", 0, "Vulkan Video Filter"));
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static void
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gst_vulkan_video_filter_class_init (GstVulkanVideoFilterClass * klass)
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{
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GObjectClass *gobject_class;
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GstElementClass *gstelement_class;
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GstBaseTransformClass *gstbasetransform_class;
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gobject_class = (GObjectClass *) klass;
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gstelement_class = (GstElementClass *) klass;
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gstbasetransform_class = (GstBaseTransformClass *) klass;
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gobject_class->finalize = gst_vulkan_video_filter_finalize;
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gstelement_class->set_context = gst_vulkan_video_filter_set_context;
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gstbasetransform_class->start =
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GST_DEBUG_FUNCPTR (gst_vulkan_video_filter_start);
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gstbasetransform_class->stop =
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GST_DEBUG_FUNCPTR (gst_vulkan_video_filter_stop);
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gstbasetransform_class->query =
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GST_DEBUG_FUNCPTR (gst_vulkan_video_filter_query);
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gstbasetransform_class->set_caps = gst_vulkan_video_filter_set_caps;
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gstbasetransform_class->transform_caps =
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gst_vulkan_video_filter_transform_caps;
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gstbasetransform_class->propose_allocation =
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gst_vulkan_video_filter_propose_allocation;
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gstbasetransform_class->decide_allocation =
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gst_vulkan_video_filter_decide_allocation;
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}
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static void
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gst_vulkan_video_filter_init (GstVulkanVideoFilter * render)
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{
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}
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static void
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gst_vulkan_video_filter_finalize (GObject * object)
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{
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GstVulkanVideoFilter *render = GST_VULKAN_VIDEO_FILTER (object);
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gst_caps_replace (&render->in_caps, NULL);
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gst_caps_replace (&render->out_caps, NULL);
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G_OBJECT_CLASS (parent_class)->finalize (object);
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}
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static gboolean
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gst_vulkan_video_filter_query (GstBaseTransform * bt,
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GstPadDirection direction, GstQuery * query)
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{
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GstVulkanVideoFilter *render = GST_VULKAN_VIDEO_FILTER (bt);
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switch (GST_QUERY_TYPE (query)) {
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case GST_QUERY_CONTEXT:{
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if (gst_vulkan_handle_context_query (GST_ELEMENT (render), query,
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NULL, render->instance, render->device))
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return TRUE;
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if (gst_vulkan_queue_handle_context_query (GST_ELEMENT (render),
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query, render->queue))
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return TRUE;
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break;
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}
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default:
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break;
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}
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return GST_BASE_TRANSFORM_CLASS (parent_class)->query (bt, direction, query);
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}
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static void
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gst_vulkan_video_filter_set_context (GstElement * element, GstContext * context)
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{
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GstVulkanVideoFilter *render = GST_VULKAN_VIDEO_FILTER (element);
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gst_vulkan_handle_set_context (element, context, NULL, &render->instance);
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GST_ELEMENT_CLASS (parent_class)->set_context (element, context);
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}
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struct choose_data
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{
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GstVulkanVideoFilter *filter;
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GstVulkanQueue *queue;
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};
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static gboolean
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_choose_queue (GstVulkanDevice * device, GstVulkanQueue * queue,
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struct choose_data *data)
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{
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guint flags =
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device->physical_device->queue_family_props[queue->family].queueFlags;
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if ((flags & VK_QUEUE_GRAPHICS_BIT) != 0) {
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if (data->queue)
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gst_object_unref (data->queue);
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data->queue = gst_object_ref (queue);
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return FALSE;
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}
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return TRUE;
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}
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static GstVulkanQueue *
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_find_graphics_queue (GstVulkanVideoFilter * filter)
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{
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struct choose_data data;
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data.filter = filter;
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data.queue = NULL;
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gst_vulkan_device_foreach_queue (filter->device,
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(GstVulkanDeviceForEachQueueFunc) _choose_queue, &data);
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return data.queue;
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}
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static GstCaps *
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gst_vulkan_video_filter_transform_caps (GstBaseTransform * bt,
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GstPadDirection direction, GstCaps * caps, GstCaps * filter)
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{
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GstCaps *result, *tmp;
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tmp = gst_caps_copy (caps);
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if (filter) {
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result = gst_caps_intersect_full (filter, tmp, GST_CAPS_INTERSECT_FIRST);
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gst_caps_unref (tmp);
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} else {
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result = tmp;
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}
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return result;
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}
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static gboolean
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gst_vulkan_video_filter_set_caps (GstBaseTransform * bt,
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GstCaps * in_caps, GstCaps * out_caps)
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{
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GstVulkanVideoFilter *render = GST_VULKAN_VIDEO_FILTER (bt);
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if (!gst_video_info_from_caps (&render->in_info, in_caps))
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return FALSE;
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if (!gst_video_info_from_caps (&render->out_info, out_caps))
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return FALSE;
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gst_caps_replace (&render->in_caps, in_caps);
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gst_caps_replace (&render->out_caps, out_caps);
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GST_DEBUG_OBJECT (bt, "set caps: %" GST_PTR_FORMAT, in_caps);
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return TRUE;
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}
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static gboolean
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gst_vulkan_video_filter_propose_allocation (GstBaseTransform * bt,
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GstQuery * decide_query, GstQuery * query)
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{
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/* FIXME: */
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return FALSE;
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}
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static gboolean
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gst_vulkan_video_filter_decide_allocation (GstBaseTransform * bt,
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GstQuery * query)
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{
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GstVulkanVideoFilter *render = GST_VULKAN_VIDEO_FILTER (bt);
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GstBufferPool *pool = NULL;
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GstStructure *config;
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GstCaps *caps;
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guint min, max, size;
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gboolean update_pool;
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gst_query_parse_allocation (query, &caps, NULL);
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if (!caps)
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return FALSE;
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if (gst_query_get_n_allocation_pools (query) > 0) {
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gst_query_parse_nth_allocation_pool (query, 0, &pool, &size, &min, &max);
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update_pool = TRUE;
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} else {
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GstVideoInfo vinfo;
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gst_video_info_init (&vinfo);
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gst_video_info_from_caps (&vinfo, caps);
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size = vinfo.size;
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min = max = 0;
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update_pool = FALSE;
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}
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if (!pool || !GST_IS_VULKAN_IMAGE_BUFFER_POOL (pool)) {
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if (pool)
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gst_object_unref (pool);
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pool = gst_vulkan_image_buffer_pool_new (render->device);
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}
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config = gst_buffer_pool_get_config (pool);
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gst_buffer_pool_config_set_params (config, caps, size, min, max);
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gst_buffer_pool_config_add_option (config, GST_BUFFER_POOL_OPTION_VIDEO_META);
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gst_buffer_pool_set_config (pool, config);
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if (update_pool)
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gst_query_set_nth_allocation_pool (query, 0, pool, size, min, max);
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else
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gst_query_add_allocation_pool (query, pool, size, min, max);
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gst_object_unref (pool);
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return TRUE;
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}
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static gboolean
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gst_vulkan_video_filter_start (GstBaseTransform * bt)
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{
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GstVulkanVideoFilter *render = GST_VULKAN_VIDEO_FILTER (bt);
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if (!gst_vulkan_ensure_element_data (GST_ELEMENT (bt), NULL,
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&render->instance)) {
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GST_ELEMENT_ERROR (render, RESOURCE, NOT_FOUND,
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("Failed to retrieve vulkan instance"), (NULL));
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return FALSE;
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}
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if (!gst_vulkan_device_run_context_query (GST_ELEMENT (render),
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&render->device)) {
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GError *error = NULL;
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GST_DEBUG_OBJECT (render, "No device retrieved from peer elements");
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if (!(render->device =
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gst_vulkan_instance_create_device (render->instance, &error))) {
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GST_ELEMENT_ERROR (render, RESOURCE, NOT_FOUND,
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("Failed to create vulkan device"), ("%s", error->message));
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g_clear_error (&error);
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return FALSE;
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}
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}
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if (!gst_vulkan_queue_run_context_query (GST_ELEMENT (render),
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&render->queue)) {
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GST_DEBUG_OBJECT (render, "No queue retrieved from peer elements");
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render->queue = _find_graphics_queue (render);
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}
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if (!render->queue)
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return FALSE;
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return TRUE;
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}
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static gboolean
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gst_vulkan_video_filter_stop (GstBaseTransform * bt)
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{
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GstVulkanVideoFilter *render = GST_VULKAN_VIDEO_FILTER (bt);
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gst_clear_object (&render->device);
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gst_clear_object (&render->queue);
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gst_clear_object (&render->instance);
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return TRUE;
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}
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