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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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09141c6e1f
Since we started depending on GLib 2.44, we can be sure this macro is defined (it will be a no-op on compilers that don't support it). For plugins we should just start using `G_DECLARE_FINAL_TYPE` which means we no longer need the macro there, but for most types in core we don't want to break ABI, which means it's better to just keep it like it is (and use the `#ifdef` instead).
120 lines
4.2 KiB
C
120 lines
4.2 KiB
C
/* GStreamer
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* Copyright (C) 2015 Centricular Ltd
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* @author: Edward Hervey <edward@centricular.com>
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* @author: Jan Schmidt <jan@centricular.com>
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*
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* gststreams.h : Header for GstStreamCollection subsystem
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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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#ifndef __GST_STREAM_COLLECTION_H__
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#define __GST_STREAM_COLLECTION_H__
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#include <gst/gstobject.h>
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G_BEGIN_DECLS
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#define GST_TYPE_STREAM_COLLECTION (gst_stream_collection_get_type ())
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#define GST_IS_STREAM_COLLECTION(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_STREAM_COLLECTION))
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#define GST_IS_STREAM_COLLECTION_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_STREAM_COLLECTION))
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#define GST_STREAM_COLLECTION_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GST_TYPE_STREAM_COLLECTION, GstStreamCollectionClass))
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#define GST_STREAM_COLLECTION(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_STREAM_COLLECTION, GstStreamCollection))
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#define GST_STREAM_COLLECTION_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_STREAM_COLLECTION, GstStreamCollectionClass))
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#define GST_STREAM_COLLECTION_CAST(obj) ((GstStreamCollection*)(obj))
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typedef struct _GstStreamCollection GstStreamCollection;
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typedef struct _GstStreamCollectionClass GstStreamCollectionClass;
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typedef struct _GstStreamCollectionPrivate GstStreamCollectionPrivate;
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#include <gst/gststreamcollection.h>
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#include <gst/gststreams.h>
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/**
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* GstStreamCollection:
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*
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* A collection of #GstStream that are available.
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*
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* A #GstStreamCollection will be provided by elements that can make those
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* streams available. Applications can use the collection to show the user
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* what streams are available by using %gst_stream_collection_get_stream()
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*
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* Once posted, a #GstStreamCollection is immutable. Updates are made by sending
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* a new #GstStreamCollection message, which may or may not share some of
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* the #GstStream objects from the collection it replaces. The receiver can check
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* the sender of a stream collection message to know which collection is
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* obsoleted.
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*
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* Several elements in a pipeline can provide #GstStreamCollection.
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*
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* Applications can activate streams from a collection by using the
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* #GST_EVENT_SELECT_STREAMS event on a pipeline, bin or element.
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*
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* Since: 1.10
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*/
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struct _GstStreamCollection {
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/*< private >*/
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GstObject object;
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gchar *upstream_id;
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GstStreamCollectionPrivate *priv;
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gpointer _gst_reserved[GST_PADDING];
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};
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/**
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* GstStreamCollectionClass:
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* @parent_class: the parent class structure
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* @stream_notify: default signal handler for the stream-notify signal
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*
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* GstStreamCollection class structure
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*/
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struct _GstStreamCollectionClass {
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GstObjectClass parent_class;
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/* signals */
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void (*stream_notify) (GstStreamCollection *collection, GstStream *stream, GParamSpec * pspec);
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/*< private >*/
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gpointer _gst_reserved[GST_PADDING];
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};
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GST_API
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GType gst_stream_collection_get_type (void);
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GST_API
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GstStreamCollection *gst_stream_collection_new (const gchar *upstream_id);
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GST_API
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const gchar *gst_stream_collection_get_upstream_id (GstStreamCollection *collection);
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GST_API
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guint gst_stream_collection_get_size (GstStreamCollection *collection);
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GST_API
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GstStream *gst_stream_collection_get_stream (GstStreamCollection *collection, guint index);
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GST_API
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gboolean gst_stream_collection_add_stream (GstStreamCollection *collection,
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GstStream *stream);
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G_DEFINE_AUTOPTR_CLEANUP_FUNC(GstStreamCollection, gst_object_unref)
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G_END_DECLS
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#endif /* __GST_STREAM_COLLECTION_H__ */
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