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585 lines
16 KiB
C
585 lines
16 KiB
C
/* GStreamer Editing Services
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* Copyright (C) 2009 Edward Hervey <edward.hervey@collabora.co.uk>
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* 2009 Nokia Corporation
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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., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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/**
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* SECTION:ges-track-object
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* @short_description: Base Class for objects contained in a #GESTrack
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*
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* #GESTrackObject is the Base Class for any object that can be contained in a
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* #GESTrack.
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*
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* It contains the basic information as to the location of the object within
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* its container, like the start position, the in-point, the duration and the
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* priority.
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*/
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#include "ges-internal.h"
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#include "ges-track-object.h"
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#include "ges-timeline-object.h"
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static GQuark _start_quark;
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static GQuark _inpoint_quark;
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static GQuark _duration_quark;
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static GQuark _priority_quark;
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#define _do_init \
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{ \
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_start_quark = g_quark_from_static_string ("start"); \
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_inpoint_quark = g_quark_from_static_string ("inpoint"); \
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_duration_quark = g_quark_from_static_string ("duration"); \
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_priority_quark = g_quark_from_static_string ("priority"); \
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}
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G_DEFINE_TYPE_WITH_CODE (GESTrackObject, ges_track_object, G_TYPE_OBJECT,
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_do_init);
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enum
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{
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PROP_0,
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PROP_START,
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PROP_INPOINT,
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PROP_DURATION,
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PROP_PRIORITY,
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PROP_PRIORITY_OFFSET,
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PROP_ACTIVE
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};
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static gboolean
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ges_track_object_create_gnl_object_func (GESTrackObject * object);
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void gnlobject_start_cb (GstElement * gnlobject, GParamSpec * arg
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G_GNUC_UNUSED, GESTrackObject * obj);
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void gnlobject_media_start_cb (GstElement * gnlobject, GParamSpec * arg
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G_GNUC_UNUSED, GESTrackObject * obj);
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void gnlobject_priority_cb (GstElement * gnlobject, GParamSpec * arg
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G_GNUC_UNUSED, GESTrackObject * obj);
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void gnlobject_duration_cb (GstElement * gnlobject, GParamSpec * arg
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G_GNUC_UNUSED, GESTrackObject * obj);
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void gnlobject_active_cb (GstElement * gnlobject, GParamSpec * arg
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G_GNUC_UNUSED, GESTrackObject * obj);
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static gboolean ges_track_object_update_priority (GESTrackObject * object);
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static void
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ges_track_object_get_property (GObject * object, guint property_id,
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GValue * value, GParamSpec * pspec)
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{
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GESTrackObject *tobj = GES_TRACK_OBJECT (object);
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switch (property_id) {
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case PROP_START:
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g_value_set_uint64 (value, tobj->start);
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break;
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case PROP_INPOINT:
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g_value_set_uint64 (value, tobj->inpoint);
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break;
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case PROP_DURATION:
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g_value_set_uint64 (value, tobj->duration);
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break;
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case PROP_PRIORITY:
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g_value_set_uint (value, tobj->base_priority);
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break;
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case PROP_PRIORITY_OFFSET:
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g_value_set_uint (value, tobj->priority_offset);
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break;
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case PROP_ACTIVE:
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g_value_set_boolean (value, tobj->active);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
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}
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}
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static void
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ges_track_object_set_property (GObject * object, guint property_id,
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const GValue * value, GParamSpec * pspec)
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{
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GESTrackObject *tobj = GES_TRACK_OBJECT (object);
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switch (property_id) {
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case PROP_START:
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ges_track_object_set_start_internal (tobj, g_value_get_uint64 (value));
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break;
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case PROP_INPOINT:
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ges_track_object_set_inpoint_internal (tobj, g_value_get_uint64 (value));
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break;
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case PROP_DURATION:
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ges_track_object_set_duration_internal (tobj, g_value_get_uint64 (value));
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break;
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case PROP_PRIORITY:
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ges_track_object_set_priority_internal (tobj, g_value_get_uint (value));
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break;
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case PROP_PRIORITY_OFFSET:
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ges_track_object_set_priority_offset_internal (tobj, g_value_get_uint
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(value));
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break;
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case PROP_ACTIVE:
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ges_track_object_set_active (tobj, g_value_get_boolean (value));
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
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}
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}
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static void
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ges_track_object_dispose (GObject * object)
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{
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G_OBJECT_CLASS (ges_track_object_parent_class)->dispose (object);
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}
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static void
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ges_track_object_finalize (GObject * object)
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{
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G_OBJECT_CLASS (ges_track_object_parent_class)->finalize (object);
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}
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static void
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ges_track_object_class_init (GESTrackObjectClass * klass)
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{
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GObjectClass *object_class = G_OBJECT_CLASS (klass);
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object_class->get_property = ges_track_object_get_property;
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object_class->set_property = ges_track_object_set_property;
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object_class->dispose = ges_track_object_dispose;
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object_class->finalize = ges_track_object_finalize;
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/**
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* GESTrackObject:start
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*
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* The position of the object in the container #GESTrack (in nanoseconds).
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*/
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g_object_class_install_property (object_class, PROP_START,
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g_param_spec_uint64 ("start", "Start",
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"The position in the container", 0, G_MAXUINT64, 0,
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G_PARAM_READWRITE));
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/**
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* GESTrackObject:in-point
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*
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* The in-point at which this #GESTrackObject will start outputting data
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* from its contents (in nanoseconds).
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*
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* Ex : an in-point of 5 seconds means that the first outputted buffer will
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* be the one located 5 seconds in the controlled resource.
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*/
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g_object_class_install_property (object_class, PROP_INPOINT,
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g_param_spec_uint64 ("in-point", "In-point", "The in-point", 0,
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G_MAXUINT64, 0, G_PARAM_READWRITE));
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/**
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* GESTrackObject:duration
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*
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* The duration (in nanoseconds) which will be used in the container #GESTrack
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* starting from 'in-point'.
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*
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*/
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g_object_class_install_property (object_class, PROP_DURATION,
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g_param_spec_uint64 ("duration", "Duration", "The duration to use",
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0, G_MAXUINT64, GST_SECOND, G_PARAM_READWRITE));
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/**
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* GESTrackObject:priority
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*
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* The priority of the object within the containing #GESTrack.
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* If two objects intersect over the same region of time, the @priority
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* property is used to decide which one takes precedence.
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*
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* The highest priority (that supercedes everything) is 0, and then lowering
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* priorities go in increasing numerical value (with #G_MAXUINT64 being the
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* lowest priority).
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*/
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g_object_class_install_property (object_class, PROP_PRIORITY,
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g_param_spec_uint ("priority", "Priority",
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"The priority of the object", 0, G_MAXUINT, 0, G_PARAM_READWRITE));
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/**
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* GESTrackObject:priority-offset
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*
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* The priority of the object relative to its parent track object.
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*/
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g_object_class_install_property (object_class, PROP_PRIORITY_OFFSET,
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g_param_spec_uint ("priority-offset", "Priority Offset",
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"An offset from the base priority", 0, G_MAXUINT, 0,
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G_PARAM_READWRITE));
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/**
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* GESTrackObject:active
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*
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* Whether the object should be taken into account in the #GESTrack output.
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* If #FALSE, then its contents will not be used in the resulting track.
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*/
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g_object_class_install_property (object_class, PROP_ACTIVE,
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g_param_spec_boolean ("active", "Active", "Use object in output",
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TRUE, G_PARAM_READWRITE));
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klass->create_gnl_object = ges_track_object_create_gnl_object_func;
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}
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static void
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ges_track_object_init (GESTrackObject * self)
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{
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/* Sane default values */
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self->pending_start = 0;
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self->pending_inpoint = 0;
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self->pending_duration = GST_SECOND;
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self->pending_gnl_priority = 1;
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self->pending_active = TRUE;
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}
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gboolean
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ges_track_object_set_start_internal (GESTrackObject * object, guint64 start)
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{
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GST_DEBUG ("object:%p, start:%" GST_TIME_FORMAT,
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object, GST_TIME_ARGS (start));
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if (object->gnlobject != NULL) {
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if (G_UNLIKELY (start == object->start))
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return FALSE;
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g_object_set (object->gnlobject, "start", start, NULL);
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} else
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object->pending_start = start;
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return TRUE;
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};
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gboolean
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ges_track_object_set_inpoint_internal (GESTrackObject * object, guint64 inpoint)
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{
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GST_DEBUG ("object:%p, inpoint:%" GST_TIME_FORMAT,
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object, GST_TIME_ARGS (inpoint));
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if (object->gnlobject != NULL) {
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if (G_UNLIKELY (inpoint == object->inpoint))
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return FALSE;
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g_object_set (object->gnlobject, "media-start", inpoint, NULL);
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} else
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object->pending_inpoint = inpoint;
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return TRUE;
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}
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gboolean
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ges_track_object_set_duration_internal (GESTrackObject * object,
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guint64 duration)
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{
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GST_DEBUG ("object:%p, duration:%" GST_TIME_FORMAT,
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object, GST_TIME_ARGS (duration));
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if (object->gnlobject != NULL) {
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if (G_UNLIKELY (duration == object->duration))
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return FALSE;
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g_object_set (object->gnlobject, "duration", duration, "media-duration",
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duration, NULL);
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} else
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object->pending_duration = duration;
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return TRUE;
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}
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/* NOTE: we handle priority differently than other properties! the gnlpriority
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* is object->base_priority + object->priority_offset! A change to either one
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* will trigger an update to the gnonlin priority and a subsequent property
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* notification.
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*/
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gboolean
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ges_track_object_set_priority_internal (GESTrackObject * object,
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guint32 priority)
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{
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guint32 save;
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save = object->base_priority;
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GST_DEBUG ("object:%p, priority:%d", object, priority);
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object->base_priority = priority;
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if (!ges_track_object_update_priority (object)) {
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object->base_priority = save;
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return FALSE;
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}
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return TRUE;
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}
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gboolean
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ges_track_object_set_priority_offset_internal (GESTrackObject * object,
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guint32 priority_offset)
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{
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guint32 save;
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save = object->priority_offset;
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GST_DEBUG ("object:%p, offset:%d", priority_offset);
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object->priority_offset = priority_offset;
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if (!ges_track_object_update_priority (object)) {
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object->base_priority = save;
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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 gboolean
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ges_track_object_update_priority (GESTrackObject * object)
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{
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guint32 priority, offset, gnl;
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priority = object->base_priority;
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offset = object->priority_offset;
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gnl = priority + offset;
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GST_DEBUG ("object:%p, base:%d, offset:%d: gnl:%d", object, priority, offset,
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gnl);
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if (object->gnlobject != NULL) {
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if (G_UNLIKELY (gnl == object->gnl_priority))
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return FALSE;
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g_object_set (object->gnlobject, "priority", gnl, NULL);
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} else
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object->pending_gnl_priority = gnl;
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return TRUE;
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}
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gboolean
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ges_track_object_set_active (GESTrackObject * object, gboolean active)
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{
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GST_DEBUG ("object:%p, active:%d", object, active);
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if (object->gnlobject != NULL) {
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if (G_UNLIKELY (active == object->active))
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return FALSE;
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g_object_set (object->gnlobject, "active", active, NULL);
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} else
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object->pending_active = active;
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return TRUE;
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}
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/* Callbacks from the GNonLin object */
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void
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gnlobject_start_cb (GstElement * gnlobject, GParamSpec * arg G_GNUC_UNUSED,
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GESTrackObject * obj)
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{
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guint64 start;
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GESTrackObjectClass *klass;
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klass = GES_TRACK_OBJECT_GET_CLASS (obj);
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g_object_get (gnlobject, "start", &start, NULL);
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GST_DEBUG ("gnlobject start : %" GST_TIME_FORMAT " current : %"
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GST_TIME_FORMAT, GST_TIME_ARGS (start), GST_TIME_ARGS (obj->start));
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if (start != obj->start) {
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obj->start = start;
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if (klass->start_changed)
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klass->start_changed (obj, start);
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/* FIXME : emit changed */
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}
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}
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/* Callbacks from the GNonLin object */
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void
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gnlobject_media_start_cb (GstElement * gnlobject,
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GParamSpec * arg G_GNUC_UNUSED, GESTrackObject * obj)
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{
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guint64 start;
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GESTrackObjectClass *klass;
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klass = GES_TRACK_OBJECT_GET_CLASS (obj);
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g_object_get (gnlobject, "media-start", &start, NULL);
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GST_DEBUG ("gnlobject in-point : %" GST_TIME_FORMAT " current : %"
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GST_TIME_FORMAT, GST_TIME_ARGS (start), GST_TIME_ARGS (obj->inpoint));
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if (start != obj->inpoint) {
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obj->inpoint = start;
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if (klass->media_start_changed)
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klass->media_start_changed (obj, start);
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/* FIXME : emit changed */
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}
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}
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void
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gnlobject_priority_cb (GstElement * gnlobject, GParamSpec * arg G_GNUC_UNUSED,
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GESTrackObject * obj)
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{
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guint32 priority;
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GESTrackObjectClass *klass;
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klass = GES_TRACK_OBJECT_GET_CLASS (obj);
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g_object_get (gnlobject, "priority", &priority, NULL);
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GST_DEBUG ("gnlobject priority : %d current : %d", priority,
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obj->gnl_priority);
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if (priority != obj->gnl_priority) {
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obj->gnl_priority = priority;
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if (klass->gnl_priority_changed)
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klass->gnl_priority_changed (obj, priority);
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/* FIXME : emit changed */
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}
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}
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void
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gnlobject_duration_cb (GstElement * gnlobject, GParamSpec * arg G_GNUC_UNUSED,
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GESTrackObject * obj)
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{
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guint64 duration;
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GESTrackObjectClass *klass;
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klass = GES_TRACK_OBJECT_GET_CLASS (obj);
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g_object_get (gnlobject, "duration", &duration, NULL);
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GST_DEBUG ("gnlobject duration : %" GST_TIME_FORMAT " current : %"
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GST_TIME_FORMAT, GST_TIME_ARGS (duration), GST_TIME_ARGS (obj->duration));
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if (duration != obj->duration) {
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obj->duration = duration;
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if (klass->duration_changed)
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klass->duration_changed (obj, duration);
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/* FIXME : emit changed */
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}
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}
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void
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gnlobject_active_cb (GstElement * gnlobject, GParamSpec * arg G_GNUC_UNUSED,
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GESTrackObject * obj)
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{
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gboolean active;
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GESTrackObjectClass *klass;
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klass = GES_TRACK_OBJECT_GET_CLASS (obj);
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g_object_get (gnlobject, "active", &active, NULL);
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GST_DEBUG ("gnlobject active : %d current : %d", active, obj->active);
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if (active != obj->active) {
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obj->active = active;
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if (klass->active_changed)
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klass->active_changed (obj, active);
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/* FIXME : emit changed */
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}
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}
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/* default 'create_gnl_object' virtual method implementation */
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static gboolean
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ges_track_object_create_gnl_object_func (GESTrackObject * object)
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{
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return FALSE;
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}
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static gboolean
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ensure_gnl_object (GESTrackObject * object)
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{
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GESTrackObjectClass *class;
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gboolean res;
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if (object->gnlobject && object->valid)
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return TRUE;
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/* 1. Create the GnlObject */
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GST_DEBUG ("Creating GnlObject");
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class = GES_TRACK_OBJECT_GET_CLASS (object);
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if (G_UNLIKELY (class->create_gnl_object == NULL)) {
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GST_ERROR ("No 'create_gnl_object' implementation !");
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return FALSE;
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}
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GST_DEBUG ("Calling virtual method");
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/* call the create_gnl_object virtual method */
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res = class->create_gnl_object (object);
|
|
|
|
if (G_UNLIKELY (res && (object->gnlobject == NULL))) {
|
|
GST_ERROR
|
|
("'create_gnl_object' implementation returned TRUE but no GnlObject is available");
|
|
return FALSE;
|
|
}
|
|
|
|
/* Connect to property notifications */
|
|
g_signal_connect (G_OBJECT (object->gnlobject), "notify::start",
|
|
G_CALLBACK (gnlobject_start_cb), object);
|
|
g_signal_connect (G_OBJECT (object->gnlobject), "notify::media-start",
|
|
G_CALLBACK (gnlobject_media_start_cb), object);
|
|
g_signal_connect (G_OBJECT (object->gnlobject), "notify::duration",
|
|
G_CALLBACK (gnlobject_duration_cb), object);
|
|
g_signal_connect (G_OBJECT (object->gnlobject), "notify::priority",
|
|
G_CALLBACK (gnlobject_priority_cb), object);
|
|
g_signal_connect (G_OBJECT (object->gnlobject), "notify::active",
|
|
G_CALLBACK (gnlobject_active_cb), object);
|
|
|
|
/* 2. Fill in the GnlObject */
|
|
if (res) {
|
|
GST_DEBUG ("Got a valid GnlObject, now filling it in");
|
|
|
|
res =
|
|
ges_timeline_object_fill_track_object (object->timelineobj, object,
|
|
object->gnlobject);
|
|
if (res) {
|
|
/* Set some properties on the GnlObject */
|
|
g_object_set (object->gnlobject,
|
|
"caps", object->track->caps,
|
|
"duration", object->pending_duration,
|
|
"media-duration", object->pending_duration,
|
|
"start", object->pending_start,
|
|
"media-start", object->pending_inpoint,
|
|
"priority", object->pending_gnl_priority,
|
|
"active", object->pending_active, NULL);
|
|
|
|
}
|
|
}
|
|
|
|
object->valid = res;
|
|
|
|
GST_DEBUG ("Returning res:%d", res);
|
|
|
|
return res;
|
|
}
|
|
|
|
gboolean
|
|
ges_track_object_set_track (GESTrackObject * object, GESTrack * track)
|
|
{
|
|
GST_DEBUG ("object:%p, track:%p", object, track);
|
|
|
|
object->track = track;
|
|
|
|
if (object->track)
|
|
return ensure_gnl_object (object);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
void
|
|
ges_track_object_set_timeline_object (GESTrackObject * object,
|
|
GESTimelineObject * tlobj)
|
|
{
|
|
GST_DEBUG ("object:%p, timeline-object:%p", object, tlobj);
|
|
|
|
object->timelineobj = tlobj;
|
|
}
|