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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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326 lines
9.9 KiB
C
326 lines
9.9 KiB
C
/* GStreamer
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* Copyright 2023 Igalia S.L.
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* @author: Thibault Saunier <tsaunier@igalia.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:element-autovideoflip
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* @title: autovideoflip
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*
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* The #autovideoflip element is used to flip the video plugging the right
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* element depending on caps and underlying buffer memory.
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*
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* Since: 1.24
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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/video/video.h>
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#include "gstautovideo.h"
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#include "gstautovideoflip.h"
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GST_DEBUG_CATEGORY (autovideoflip_debug);
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#define GST_CAT_DEFAULT (autovideoflip_debug)
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#define PROP_DIRECTION_DEFAULT GST_VIDEO_ORIENTATION_IDENTITY
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/* GstVideoFlip properties */
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enum
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{
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PROP_0,
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PROP_VIDEO_DIRECTION
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};
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struct _GstAutoVideoFlip
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{
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GstBaseAutoConvert parent;
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GstVideoOrientationMethod direction;
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GList *bindings;
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};
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G_DEFINE_TYPE (GstAutoVideoFlip, gst_auto_video_flip,
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GST_TYPE_BASE_AUTO_CONVERT);
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GST_ELEMENT_REGISTER_DEFINE (autovideoflip, "autovideoflip",
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GST_RANK_NONE, gst_auto_video_flip_get_type ());
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static void
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gst_auto_video_flip_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec)
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{
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GstAutoVideoFlip *self = GST_AUTO_VIDEO_FLIP (object);
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switch (prop_id) {
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case PROP_VIDEO_DIRECTION:
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self->direction = g_value_get_enum (value);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static void
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gst_auto_video_flip_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * pspec)
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{
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GstAutoVideoFlip *self = GST_AUTO_VIDEO_FLIP (object);
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switch (prop_id) {
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case PROP_VIDEO_DIRECTION:
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g_value_set_enum (value, self->direction);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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#if !GLIB_CHECK_VERSION(2, 68, 0)
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static GObject *
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g_binding_dup_target (GBinding * binding)
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{
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return g_object_ref (g_binding_get_target (binding));
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}
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#endif
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static gboolean
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element_is_handled_video_flip (GstElement * element)
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{
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GstElementFactory *factory = gst_element_get_factory (element);
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return !g_strcmp0 (GST_OBJECT_NAME (factory), "glvideoflip") ||
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!g_strcmp0 (GST_OBJECT_NAME (factory), "videoflip");
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}
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static gboolean
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gst_auto_video_flip_transform_to (GBinding * binding, const GValue * from,
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GValue * to_value, gpointer _udata)
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{
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g_value_set_enum (to_value, g_value_get_enum (from));
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return TRUE;
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}
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static void
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gst_auto_video_flip_deep_element_added (GstBin * bin, GstBin * sub_bin,
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GstElement * element)
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{
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GstAutoVideoFlip *self = GST_AUTO_VIDEO_FLIP (bin);
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GList *new_bindings = NULL;
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if (!element_is_handled_video_flip (element))
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goto done;
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GST_OBJECT_LOCK (bin);
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for (GList * tmp = self->bindings; tmp; tmp = tmp->next) {
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GBinding *binding = tmp->data;
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GObject *target = g_binding_dup_target (binding);
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if (GST_ELEMENT (target) == element) {
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GST_INFO_OBJECT (self, "Newly added element %s already bound",
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GST_OBJECT_NAME (gst_element_get_factory (element)));
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GST_OBJECT_UNLOCK (bin);
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gst_object_unref (target);
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goto done;
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}
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gst_object_unref (target);
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}
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GST_OBJECT_UNLOCK (bin);
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new_bindings = g_list_prepend (new_bindings,
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g_object_bind_property_full (bin, "video-direction",
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element, "video-direction",
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G_BINDING_SYNC_CREATE | G_BINDING_DEFAULT,
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gst_auto_video_flip_transform_to, NULL, NULL, NULL)
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);
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GST_OBJECT_LOCK (bin);
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self->bindings = g_list_concat (self->bindings, new_bindings);
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GST_OBJECT_UNLOCK (bin);
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done:
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GST_BIN_CLASS (gst_auto_video_flip_parent_class)->deep_element_added (bin,
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sub_bin, element);
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}
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static void
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gst_auto_video_flip_deep_element_removed (GstBin * bin, GstBin * sub_bin,
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GstElement * element)
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{
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GList *bindings = NULL;
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GstAutoVideoFlip *self = GST_AUTO_VIDEO_FLIP (bin);
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if (!element_is_handled_video_flip (element))
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goto done;
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GST_OBJECT_LOCK (bin);
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for (GList * tmp = self->bindings; tmp; tmp = tmp->next) {
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GBinding *binding = tmp->data;
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GObject *target = g_binding_dup_target (binding);
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if (GST_ELEMENT (target) == element) {
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GList *node = tmp;
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bindings = g_list_prepend (bindings, binding);
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tmp = tmp->prev;
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self->bindings = g_list_delete_link (self->bindings, node);
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if (!tmp)
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break;
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}
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gst_object_unref (target);
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}
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GST_OBJECT_UNLOCK (bin);
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done:
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GST_BIN_CLASS (gst_auto_video_flip_parent_class)->deep_element_removed (bin,
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sub_bin, element);
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}
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static void
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gst_auto_video_flip_class_init (GstAutoVideoFlipClass * klass)
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{
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GstElementClass *gstelement_class = (GstElementClass *) klass;
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GObjectClass *gobject_class = (GObjectClass *) klass;
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GstBinClass *gstbin_class = (GstBinClass *) klass;
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GST_DEBUG_CATEGORY_INIT (autovideoflip_debug, "autovideoflip", 0,
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"Auto video flipper");
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gobject_class->set_property = gst_auto_video_flip_set_property;
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gobject_class->get_property = gst_auto_video_flip_get_property;
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g_object_class_install_property (gobject_class, PROP_VIDEO_DIRECTION,
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g_param_spec_enum ("video-direction", "video-direction",
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"Video direction: rotation and flipping",
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GST_TYPE_VIDEO_ORIENTATION_METHOD, PROP_DIRECTION_DEFAULT,
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GST_PARAM_CONTROLLABLE | GST_PARAM_MUTABLE_PLAYING |
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G_PARAM_READWRITE | G_PARAM_CONSTRUCT | G_PARAM_STATIC_STRINGS));
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gst_element_class_set_static_metadata (gstelement_class,
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"Flip the video plugging the right element depending on caps",
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"Bin/Filter/Effect/Video",
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"Selects the right video flip element based on the caps",
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"Thibault Saunier <tsaunier@igalia.com>");
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gstbin_class->deep_element_added = gst_auto_video_flip_deep_element_added;
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gstbin_class->deep_element_removed = gst_auto_video_flip_deep_element_removed;
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}
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static void
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gst_auto_video_flip_init (GstAutoVideoFlip * self)
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{
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self->direction = PROP_DIRECTION_DEFAULT;
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/* *INDENT-OFF* */
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static const GstAutoVideoFilterGenerator gen[] = {
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{
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.first_elements = { "bayer2rgb", NULL},
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.colorspace_converters = { "videoconvertscale", NULL },
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.last_elements = { NULL } ,
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.filters = { "videoflip", NULL },
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.rank = GST_RANK_MARGINAL,
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},
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{
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.first_elements = { NULL, },
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.colorspace_converters = { "videoconvertscale", NULL },
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.last_elements = { NULL },
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.filters = { "videoflip" },
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.rank = GST_RANK_SECONDARY,
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},
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{
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.first_elements = { NULL, },
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.colorspace_converters = { "videoconvertscale", NULL },
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.last_elements = { "rgb2bayer", NULL },
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.filters = { "videoflip" },
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.rank = GST_RANK_MARGINAL,
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},
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{
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.first_elements = { "glupload" },
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.colorspace_converters = { "glcolorconvert", NULL },
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.last_elements = { NULL, },
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.filters = { "glvideoflip" },
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.rank = GST_RANK_PRIMARY,
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},
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{
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.first_elements = { NULL },
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.colorspace_converters = { "glcolorconvert", NULL },
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.last_elements = { NULL, },
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.filters = { "glvideoflip" },
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.rank = GST_RANK_PRIMARY,
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},
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{
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.first_elements = { "videoconvertscale", "glupload", NULL },
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.colorspace_converters = { NULL },
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.last_elements = { NULL },
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.filters = { "glvideoflip", NULL },
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.rank = GST_RANK_MARGINAL + 1,
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},
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{
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.first_elements = { NULL },
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.colorspace_converters = { NULL },
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.last_elements = { "gldownload", NULL },
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.filters = { "glvideoflip", NULL },
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.rank = GST_RANK_MARGINAL + 1,
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},
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{ /* CUDA -> GL */
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.first_elements = { "capsfilter caps=video/x-raw(memory:CUDAMemory)", "cudadownload", NULL },
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.colorspace_converters = { "glcolorconvert", "glcolorscale", "glcolorconvert", NULL },
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.last_elements = { NULL },
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.filters = { "glvideoflip", NULL },
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.rank = GST_RANK_PRIMARY - 1,
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},
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{ /* CUDA -> CUDA */
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.first_elements = { "capsfilter caps=video/x-raw(memory:CUDAMemory)", "cudadownload", NULL },
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.colorspace_converters = { "glcolorconvert", "glcolorscale", "glcolorconvert", NULL },
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.last_elements = { "cudaupload", "capsfilter caps=video/x-raw(memory:CUDAMemory)", NULL },
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.filters = { "glvideoflip", NULL },
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.rank = GST_RANK_SECONDARY - 1,
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},
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{ /* Software -> CUDA (uploading as soon as possible) */
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.first_elements = { "glupload", NULL },
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.colorspace_converters = { "glcoloconvert", NULL },
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.last_elements = { "cudaupload", "capsfilter caps=video/x-raw(memory:CUDAMemory)", NULL },
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.filters = { "glvideoflip", NULL },
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.rank = GST_RANK_MARGINAL,
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},
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{ /* CUDA -> Software */
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.first_elements = { "capsfilter caps=video/x-raw(memory:CUDAMemory)", "cudadownload", NULL },
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.colorspace_converters = { "glcolorconvert", "glcolorscale", "glcolorconvert", NULL },
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.last_elements = { "gldownload", NULL },
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.filters = { "glvideoflip", NULL },
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.rank = GST_RANK_MARGINAL,
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},
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{ /* Worst case we upload/download as required */
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.first_elements = { NULL},
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.colorspace_converters = { NULL },
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.last_elements = { NULL },
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.filters = { NULL },
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.rank = 0,
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},
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};
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/* *INDENT-ON* */
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gst_auto_video_register_well_known_bins (GST_BASE_AUTO_CONVERT (self), gen);
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}
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