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141 lines
4.6 KiB
C
141 lines
4.6 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 GstStream 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_STREAMS_H__
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#define __GST_STREAMS_H__
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#include <gst/gstobject.h>
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G_BEGIN_DECLS
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#define GST_TYPE_STREAM (gst_stream_get_type ())
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#define GST_IS_STREAM(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_STREAM))
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#define GST_IS_STREAM_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_STREAM))
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#define GST_STREAM_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GST_TYPE_STREAM, GstStreamClass))
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#define GST_STREAM(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_STREAM, GstStream))
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#define GST_STREAM_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_STREAM, GstStreamClass))
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#define GST_STREAM_CAST(obj) ((GstStream*)(obj))
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/**
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* GstStreamType:
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* @GST_STREAM_TYPE_UNKNOWN: The stream is of unknown (unclassified) type.
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* @GST_STREAM_TYPE_AUDIO: The stream is of audio data
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* @GST_STREAM_TYPE_VIDEO: The stream carries video data
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* @GST_STREAM_TYPE_CONTAINER: The stream is a muxed container type
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* @GST_STREAM_TYPE_TEXT: The stream contains subtitle / subpicture data.
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*
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* #GstStreamType describes a high level classification set for
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* flows of data in #GstStream objects.
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*
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* Note that this is a flag, and therefore users should not assume it
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* will be a single value. Do not use the equality operator for checking
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* whether a stream is of a certain type.
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*/
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typedef enum {
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GST_STREAM_TYPE_UNKNOWN = 1 << 0,
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GST_STREAM_TYPE_AUDIO = 1 << 1,
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GST_STREAM_TYPE_VIDEO = 1 << 2,
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GST_STREAM_TYPE_CONTAINER = 1 << 3,
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GST_STREAM_TYPE_TEXT = 1 << 4
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} GstStreamType;
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typedef struct _GstStream GstStream;
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typedef struct _GstStreamClass GstStreamClass;
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typedef struct _GstStreamPrivate GstStreamPrivate;
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/**
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* GstStream:
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* @stream_id: The Stream Identifier for this #GstStream
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*
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* A high-level object representing a single stream. It might be backed, or
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* not, by an actual flow of data in a pipeline (#GstPad).
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*
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* A #GstStream does not care about data changes (such as decoding, encoding,
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* parsing,...) as long as the underlying data flow corresponds to the same
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* high-level flow (ex: a certain audio track).
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*
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* A #GstStream contains all the information pertinent to a stream, such as
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* stream-id, tags, caps, type, ...
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*
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* Elements can subclass a #GstStream for internal usage (to contain information
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* pertinent to streams of data).
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*/
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struct _GstStream {
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GstObject object;
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/*< public >*/
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const gchar *stream_id;
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/*< private >*/
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GstStreamPrivate *priv;
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gpointer _gst_reserved[GST_PADDING];
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};
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/**
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* GstStreamClass:
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* @parent_class: the parent class structure
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*
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* GstStream class structure
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*/
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struct _GstStreamClass {
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GstObjectClass parent_class;
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/*< private >*/
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gpointer _gst_reserved[GST_PADDING];
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};
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GType gst_stream_get_type (void);
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#include <gst/gstevent.h>
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GstStream *gst_stream_new (const gchar *stream_id,
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GstCaps *caps,
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GstStreamType type,
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GstStreamFlags flags);
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const gchar *gst_stream_get_stream_id (GstStream *stream);
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void gst_stream_set_stream_flags (GstStream *stream, GstStreamFlags flags);
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GstStreamFlags gst_stream_get_stream_flags (GstStream *stream);
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void gst_stream_set_stream_type (GstStream *stream, GstStreamType stream_type);
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GstStreamType gst_stream_get_stream_type (GstStream *stream);
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void gst_stream_set_tags (GstStream *stream, GstTagList *tags);
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GstTagList *gst_stream_get_tags (GstStream *stream);
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void gst_stream_set_caps (GstStream *stream, GstCaps *caps);
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GstCaps *gst_stream_get_caps (GstStream *stream);
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const gchar *gst_stream_type_get_name (GstStreamType stype);
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#ifdef G_DEFINE_AUTOPTR_CLEANUP_FUNC
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G_DEFINE_AUTOPTR_CLEANUP_FUNC(GstStream, gst_object_unref)
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#endif
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G_END_DECLS
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#endif /* __GST_STREAMS_H__ */
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