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174 lines
5 KiB
C
174 lines
5 KiB
C
/* GStreamer
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* Copyright (C) 2001 Wim Taymans <wim.taymans@gmail.com>
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* 2004-2008 Edward Hervey <bilboed@bilboed.com>
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*
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* nleobject.h: Header for base NleObject
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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 __NLE_OBJECT_H__
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#define __NLE_OBJECT_H__
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#include <gst/gst.h>
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#include "nletypes.h"
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G_BEGIN_DECLS
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#define NLE_TYPE_OBJECT \
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(nle_object_get_type())
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#define NLE_OBJECT(obj) \
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(G_TYPE_CHECK_INSTANCE_CAST((obj),NLE_TYPE_OBJECT,NleObject))
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#define NLE_OBJECT_CAST(obj) ((NleObject*) (obj))
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#define NLE_OBJECT_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_CAST((klass),NLE_TYPE_OBJECT,NleObjectClass))
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#define NLE_OBJECT_GET_CLASS(obj) \
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(G_TYPE_INSTANCE_GET_CLASS ((obj), NLE_TYPE_OBJECT, NleObjectClass))
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#define NLE_IS_OBJECT(obj) \
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(G_TYPE_CHECK_INSTANCE_TYPE((obj),NLE_TYPE_OBJECT))
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#define NLE_IS_OBJECT_CLASS(obj) \
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(G_TYPE_CHECK_CLASS_TYPE((klass),NLE_TYPE_OBJECT))
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#define NLE_OBJECT_SRC(obj) (((NleObject *) obj)->srcpad)
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/**
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* NleObjectFlags:
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* @NLE_OBJECT_IS_SOURCE:
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* @NLE_OBJECT_IS_OPERATION:
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* @NLE_OBJECT_IS_EXPANDABLE: The #NleObject start/stop will extend accross the full composition.
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* @NLE_OBJECT_LAST_FLAG:
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*/
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typedef enum
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{
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NLE_OBJECT_SOURCE = (GST_BIN_FLAG_LAST << 0),
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NLE_OBJECT_OPERATION = (GST_BIN_FLAG_LAST << 1),
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NLE_OBJECT_EXPANDABLE = (GST_BIN_FLAG_LAST << 2),
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NLE_OBJECT_COMPOSITION = (GST_BIN_FLAG_LAST << 3),
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/* padding */
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NLE_OBJECT_LAST_FLAG = (GST_BIN_FLAG_LAST << 5)
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} NleObjectFlags;
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#define NLE_OBJECT_IS_SOURCE(obj) \
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(GST_OBJECT_FLAG_IS_SET(obj, NLE_OBJECT_SOURCE))
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#define NLE_OBJECT_IS_OPERATION(obj) \
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(GST_OBJECT_FLAG_IS_SET(obj, NLE_OBJECT_OPERATION))
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#define NLE_OBJECT_IS_EXPANDABLE(obj) \
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(GST_OBJECT_FLAG_IS_SET(obj, NLE_OBJECT_EXPANDABLE))
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#define NLE_OBJECT_IS_COMPOSITION(obj) \
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(GST_OBJECT_FLAG_IS_SET(obj, NLE_OBJECT_COMPOSITION))
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/* For internal usage only */
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#define NLE_OBJECT_START(obj) (NLE_OBJECT_CAST (obj)->start)
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#define NLE_OBJECT_STOP(obj) (NLE_OBJECT_CAST (obj)->stop)
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#define NLE_OBJECT_DURATION(obj) (NLE_OBJECT_CAST (obj)->duration)
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#define NLE_OBJECT_INPOINT(obj) (NLE_OBJECT_CAST (obj)->inpoint)
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#define NLE_OBJECT_PRIORITY(obj) (NLE_OBJECT_CAST (obj)->priority)
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#define NLE_OBJECT_ACTIVE(obj) (NLE_OBJECT_DURATION(obj) > 0 && NLE_OBJECT_CAST (obj)->active)
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#define NLE_OBJECT_IS_COMMITING(obj) (NLE_OBJECT_CAST (obj)->commiting)
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struct _NleObject
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{
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GstBin parent;
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GstPad *srcpad;
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/* Time positionning */
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GstClockTime start;
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GstClockTime inpoint;
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GstClockTimeDiff duration;
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/* Pending time positionning
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* Should be == GST_CLOCK_TIME_NONE when nothing to do
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*/
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GstClockTime pending_start;
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GstClockTime pending_inpoint;
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GstClockTimeDiff pending_duration;
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guint32 pending_priority;
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gboolean pending_active;
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gboolean commit_needed;
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gboolean commiting; /* Set to TRUE during the commiting time only */
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gboolean expandable;
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/* read-only */
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GstClockTime stop;
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/* priority in parent */
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guint32 priority;
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/* active in parent */
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gboolean active;
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/* Filtering caps */
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GstCaps *caps;
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/* current segment seek <RO> */
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gdouble segment_rate;
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GstSeekFlags segment_flags;
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gint64 segment_start;
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gint64 segment_stop;
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gboolean in_composition;
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};
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struct _NleObjectClass
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{
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GstBinClass parent_class;
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/* Signal method handler */
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gboolean (*commit_signal_handler) (NleObject * object, gboolean recurse);
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/* virtual methods for subclasses */
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gboolean (*prepare) (NleObject * object);
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gboolean (*cleanup) (NleObject * object);
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gboolean (*commit) (NleObject * object, gboolean recurse);
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};
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GType nle_object_get_type (void)G_GNUC_INTERNAL;
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gboolean
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nle_object_to_media_time (NleObject * object, GstClockTime otime,
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GstClockTime * mtime) G_GNUC_INTERNAL;
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gboolean
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nle_media_to_object_time (NleObject * object, GstClockTime mtime,
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GstClockTime * otime) G_GNUC_INTERNAL;
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void
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nle_object_set_caps (NleObject * object, const GstCaps * caps) G_GNUC_INTERNAL;
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void
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nle_object_set_commit_needed (NleObject *object) G_GNUC_INTERNAL;
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gboolean
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nle_object_commit (NleObject *object, gboolean recurse) G_GNUC_INTERNAL;
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void
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nle_object_reset (NleObject *object) G_GNUC_INTERNAL;
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GstStateChangeReturn
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nle_object_cleanup (NleObject * object) G_GNUC_INTERNAL;
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void nle_object_seek_all_children (NleObject *object, GstEvent *seek_event) G_GNUC_INTERNAL;
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G_END_DECLS
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#endif /* __NLE_OBJECT_H__ */
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