gstreamer/ges/ges-timeline-object.c
Mathieu Duponchelle ad85383be1 ges: Add a track-object-added signal to GESTimelineObject
API: GESTimelineObject::track-object-added signal
2012-01-11 11:56:14 -03:00

1362 lines
38 KiB
C

/* GStreamer Editing Services
* Copyright (C) 2009 Edward Hervey <edward.hervey@collabora.co.uk>
* 2009 Nokia Corporation
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
/**
* SECTION:ges-timeline-object
* @short_description: Base Class for objects in a #GESTimelineLayer
*
* A #GESTimelineObject is a 'natural' object which controls one or more
* #GESTrackObject(s) in one or more #GESTrack(s).
*
* Keeps a reference to the #GESTrackObject(s) it created and
* sets/updates their properties.
*/
#include "ges-timeline-object.h"
#include "ges.h"
#include "gesmarshal.h"
#include "ges-internal.h"
gboolean
ges_timeline_object_fill_track_object_func (GESTimelineObject * object,
GESTrackObject * trackobj, GstElement * gnlobj);
gboolean
ges_timeline_object_create_track_objects_func (GESTimelineObject
* object, GESTrack * track);
static void
track_object_start_changed_cb (GESTrackObject * child,
GParamSpec * arg G_GNUC_UNUSED, GESTimelineObject * object);
static void
track_object_inpoint_changed_cb (GESTrackObject * child,
GParamSpec * arg G_GNUC_UNUSED, GESTimelineObject * object);
static void
track_object_duration_changed_cb (GESTrackObject * child,
GParamSpec * arg G_GNUC_UNUSED, GESTimelineObject * object);
static void
track_object_priority_changed_cb (GESTrackObject * child,
GParamSpec * arg G_GNUC_UNUSED, GESTimelineObject * object);
static void update_height (GESTimelineObject * object);
static gint sort_track_effects (gpointer a, gpointer b,
GESTimelineObject * object);
static void
get_layer_priorities (GESTimelineLayer * layer, guint32 * layer_min_gnl_prio,
guint32 * layer_max_gnl_prio);
static gboolean
ges_timeline_object_set_start_internal (GESTimelineObject * object,
guint64 start);
static gboolean ges_timeline_object_set_inpoint_internal (GESTimelineObject *
object, guint64 inpoint);
static gboolean ges_timeline_object_set_duration_internal (GESTimelineObject *
object, guint64 duration);
static gboolean ges_timeline_object_set_priority_internal (GESTimelineObject *
object, guint32 priority);
G_DEFINE_ABSTRACT_TYPE (GESTimelineObject, ges_timeline_object,
G_TYPE_INITIALLY_UNOWNED);
/* Mapping of relationship between a TimelineObject and the TrackObjects
* it controls
*
* NOTE : how do we make this public in the future ?
*/
typedef struct
{
GESTrackObject *object;
gint64 start_offset;
gint64 duration_offset;
gint64 inpoint_offset;
gint32 priority_offset;
guint start_notifyid;
guint duration_notifyid;
guint inpoint_notifyid;
guint priority_notifyid;
/* track mapping ?? */
} ObjectMapping;
enum
{
EFFECT_ADDED,
EFFECT_REMOVED,
TRACK_OBJECT_ADDED,
LAST_SIGNAL
};
static guint ges_timeline_object_signals[LAST_SIGNAL] = { 0 };
struct _GESTimelineObjectPrivate
{
/*< public > */
GESTimelineLayer *layer;
/*< private > */
/* A list of TrackObject controlled by this TimelineObject sorted by
* priority */
GList *trackobjects;
/* Set to TRUE when the timelineobject is doing updates of track object
* properties so we don't end up in infinite property update loops
*/
gboolean ignore_notifies;
gboolean is_moving;
GList *mappings;
guint nb_effects;
/* The formats supported by this TimelineObject */
GESTrackType supportedformats;
};
enum
{
PROP_0,
PROP_START,
PROP_INPOINT,
PROP_DURATION,
PROP_PRIORITY,
PROP_HEIGHT,
PROP_LAYER,
PROP_SUPPORTED_FORMATS,
PROP_LAST
};
static GParamSpec *properties[PROP_LAST];
static void
ges_timeline_object_get_property (GObject * object, guint property_id,
GValue * value, GParamSpec * pspec)
{
GESTimelineObject *tobj = GES_TIMELINE_OBJECT (object);
switch (property_id) {
case PROP_START:
g_value_set_uint64 (value, tobj->start);
break;
case PROP_INPOINT:
g_value_set_uint64 (value, tobj->inpoint);
break;
case PROP_DURATION:
g_value_set_uint64 (value, tobj->duration);
break;
case PROP_PRIORITY:
g_value_set_uint (value, tobj->priority);
break;
case PROP_HEIGHT:
g_value_set_uint (value, tobj->height);
break;
case PROP_LAYER:
g_value_set_object (value, tobj->priv->layer);
break;
case PROP_SUPPORTED_FORMATS:
g_value_set_flags (value, tobj->priv->supportedformats);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
}
}
static void
ges_timeline_object_set_property (GObject * object, guint property_id,
const GValue * value, GParamSpec * pspec)
{
GESTimelineObject *tobj = GES_TIMELINE_OBJECT (object);
switch (property_id) {
case PROP_START:
ges_timeline_object_set_start_internal (tobj, g_value_get_uint64 (value));
break;
case PROP_INPOINT:
ges_timeline_object_set_inpoint_internal (tobj,
g_value_get_uint64 (value));
break;
case PROP_DURATION:
ges_timeline_object_set_duration_internal (tobj,
g_value_get_uint64 (value));
break;
case PROP_PRIORITY:
ges_timeline_object_set_priority_internal (tobj,
g_value_get_uint (value));
break;
case PROP_SUPPORTED_FORMATS:
ges_timeline_object_set_supported_formats (tobj,
g_value_get_flags (value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
}
}
static void
ges_timeline_object_class_init (GESTimelineObjectClass * klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
g_type_class_add_private (klass, sizeof (GESTimelineObjectPrivate));
object_class->get_property = ges_timeline_object_get_property;
object_class->set_property = ges_timeline_object_set_property;
klass->create_track_objects = ges_timeline_object_create_track_objects_func;
klass->track_object_added = NULL;
klass->track_object_released = NULL;
/**
* GESTimelineObject:start
*
* The position of the object in the #GESTimelineLayer (in nanoseconds).
*/
properties[PROP_START] = g_param_spec_uint64 ("start", "Start",
"The position in the container", 0, G_MAXUINT64, 0, G_PARAM_READWRITE);
g_object_class_install_property (object_class, PROP_START,
properties[PROP_START]);
/**
* GESTimelineObject:in-point
*
* The in-point at which this #GESTimelineObject will start outputting data
* from its contents (in nanoseconds).
*
* Ex : an in-point of 5 seconds means that the first outputted buffer will
* be the one located 5 seconds in the controlled resource.
*/
properties[PROP_INPOINT] =
g_param_spec_uint64 ("in-point", "In-point", "The in-point", 0,
G_MAXUINT64, 0, G_PARAM_READWRITE);
g_object_class_install_property (object_class, PROP_INPOINT,
properties[PROP_INPOINT]);
/**
* GESTimelineObject:duration
*
* The duration (in nanoseconds) which will be used in the container #GESTrack
* starting from 'in-point'.
*/
properties[PROP_DURATION] =
g_param_spec_uint64 ("duration", "Duration", "The duration to use", 0,
G_MAXUINT64, GST_CLOCK_TIME_NONE, G_PARAM_READWRITE);
g_object_class_install_property (object_class, PROP_DURATION,
properties[PROP_DURATION]);
/**
* GESTimelineObject:priority
*
* The layer priority of the timeline object.
*/
properties[PROP_PRIORITY] = g_param_spec_uint ("priority", "Priority",
"The priority of the object", 0, G_MAXUINT, 0, G_PARAM_READWRITE);
g_object_class_install_property (object_class, PROP_PRIORITY,
properties[PROP_PRIORITY]);
/**
* GESTimelineObject:height
*
* The span of layer priorities which this object occupies.
*/
properties[PROP_HEIGHT] = g_param_spec_uint ("height", "Height",
"The span of priorities this object occupies", 0, G_MAXUINT, 1,
G_PARAM_READABLE);
g_object_class_install_property (object_class, PROP_HEIGHT,
properties[PROP_HEIGHT]);
/**
* GESTimelineObject:supported-formats:
*
* The formats supported by the object.
*
* Since: 0.10.XX
*/
properties[PROP_SUPPORTED_FORMATS] = g_param_spec_flags ("supported-formats",
"Supported formats", "Formats supported by the file",
GES_TYPE_TRACK_TYPE, GES_TRACK_TYPE_UNKNOWN,
G_PARAM_READWRITE | G_PARAM_CONSTRUCT);
g_object_class_install_property (object_class, PROP_SUPPORTED_FORMATS,
properties[PROP_SUPPORTED_FORMATS]);
/**
* GESTimelineObject:layer
*
* The GESTimelineLayer where this object is being used.
*/
properties[PROP_LAYER] = g_param_spec_object ("layer", "Layer",
"The GESTimelineLayer where this object is being used.",
GES_TYPE_TIMELINE_LAYER, G_PARAM_READABLE);
g_object_class_install_property (object_class, PROP_LAYER,
properties[PROP_LAYER]);
/**
* GESTimelineObject::effect-added
* @object: the #GESTimelineObject
* @effect: the #GESTrackEffect that was added.
*
* Will be emitted after an effect was added to the object.
*
* Since: 0.10.2
*/
ges_timeline_object_signals[EFFECT_ADDED] =
g_signal_new ("effect-added", G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_FIRST, 0, NULL, NULL, ges_marshal_VOID__OBJECT,
G_TYPE_NONE, 1, GES_TYPE_TRACK_EFFECT);
/**
* GESTimelineObject::effect-removed
* @object: the #GESTimelineObject
* @effect: the #GESTrackEffect that was added.
*
* Will be emitted after an effect was remove from the object.
*
* Since: 0.10.2
*/
ges_timeline_object_signals[EFFECT_REMOVED] =
g_signal_new ("effect-removed", G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_FIRST, 0, NULL, NULL, ges_marshal_VOID__OBJECT,
G_TYPE_NONE, 1, GES_TYPE_TRACK_EFFECT);
/**
* GESTimelineObject::track-object-added
* @object: the #GESTimelineObject
* @effect: the #GESTrackObject that was added.
*
* Will be emitted after a track object was added to the object.
*
* Since: 0.10.2
*/
ges_timeline_object_signals[TRACK_OBJECT_ADDED] =
g_signal_new ("track-object-added", G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_FIRST, 0, NULL, NULL, ges_marshal_VOID__OBJECT,
G_TYPE_NONE, 1, GES_TYPE_TRACK_OBJECT);
klass->need_fill_track = TRUE;
}
static void
ges_timeline_object_init (GESTimelineObject * self)
{
self->priv = G_TYPE_INSTANCE_GET_PRIVATE (self,
GES_TYPE_TIMELINE_OBJECT, GESTimelineObjectPrivate);
self->duration = GST_SECOND;
self->height = 1;
self->priv->trackobjects = NULL;
self->priv->layer = NULL;
self->priv->nb_effects = 0;
self->priv->is_moving = FALSE;
}
/**
* ges_timeline_object_create_track_object:
* @object: The origin #GESTimelineObject
* @track: The #GESTrack to create a #GESTrackObject for.
*
* Creates a #GESTrackObject for the provided @track. The timeline object
* keep a reference to the newly created trackobject, you therefore need to
* call @ges_timeline_object_release_track_object when you are done with it.
*
* Returns: (transfer none): A #GESTrackObject. Returns NULL if the #GESTrackObject could not
* be created.
*/
GESTrackObject *
ges_timeline_object_create_track_object (GESTimelineObject * object,
GESTrack * track)
{
GESTimelineObjectClass *class;
GESTrackObject *res;
class = GES_TIMELINE_OBJECT_GET_CLASS (object);
if (G_UNLIKELY (class->create_track_object == NULL)) {
GST_ERROR ("No 'create_track_object' implementation available");
return NULL;
}
res = class->create_track_object (object, track);
ges_timeline_object_add_track_object (object, res);
return res;
}
/**
* ges_timeline_object_create_track_objects:
* @object: The origin #GESTimelineObject
* @track: The #GESTrack to create each #GESTrackObject for.
*
* Creates all #GESTrackObjects supported by this object and adds them to the
* provided track. The track is responsible for calling
* #ges_timeline_release_track_object on these objects when it is finished
* with them.
*
* Returns: %TRUE if each track object was created successfully, or %FALSE if an
* error occured.
*/
gboolean
ges_timeline_object_create_track_objects (GESTimelineObject * object,
GESTrack * track)
{
GESTimelineObjectClass *klass;
klass = GES_TIMELINE_OBJECT_GET_CLASS (object);
if (!(klass->create_track_objects)) {
GST_WARNING ("no GESTimelineObject::create_track_objects implentation");
return FALSE;
}
return klass->create_track_objects (object, track);
}
/*
* default implementation of GESTimelineObjectClass::create_track_objects
*/
gboolean
ges_timeline_object_create_track_objects_func (GESTimelineObject * object,
GESTrack * track)
{
GESTrackObject *result;
result = ges_timeline_object_create_track_object (object, track);
if (!result) {
GST_WARNING ("couldn't create track object");
return FALSE;
}
return ges_track_add_object (track, result);
}
/**
* ges_timeline_object_add_track_object:
* @object: a #GESTimelineObject
* @trobj: the GESTrackObject
*
* Add a track object to the timeline object. Should only be called by
* subclasses implementing the create_track_objects (plural) vmethod.
*
* Takes a reference on @trobj.
*
* Returns: %TRUE on success, %FALSE on failure.
*/
gboolean
ges_timeline_object_add_track_object (GESTimelineObject * object, GESTrackObject
* trobj)
{
ObjectMapping *mapping;
GList *tmp;
guint max_prio, min_prio;
GESTimelineObjectPrivate *priv = object->priv;
gboolean is_effect = GES_IS_TRACK_EFFECT (trobj);
GESTimelineObjectClass *klass = GES_TIMELINE_OBJECT_GET_CLASS (object);
GST_LOG ("Got a TrackObject : %p , setting the timeline object as its"
"creator. Is a TrackEffect %i", trobj, is_effect);
if (!trobj)
return FALSE;
ges_track_object_set_timeline_object (trobj, object);
g_object_ref (trobj);
mapping = g_slice_new0 (ObjectMapping);
mapping->object = trobj;
priv->mappings = g_list_append (priv->mappings, mapping);
GST_DEBUG ("Adding TrackObject to the list of controlled track objects");
/* We steal the initial reference */
GST_DEBUG ("Setting properties on newly created TrackObject");
mapping->priority_offset = priv->nb_effects;
/* If the trackobject is an effect:
* - We add it on top of the list of TrackEffect
* - We put all TrackObject present in the TimelineObject
* which are not TrackEffect on top of them
*
* FIXME: Let the full control over priorities to the user
*/
if (is_effect) {
GST_DEBUG
("Moving non on top effect under other TrackObject-s, nb effects %i",
priv->nb_effects);
for (tmp = g_list_nth (priv->trackobjects, priv->nb_effects); tmp;
tmp = tmp->next) {
GESTrackObject *tmpo = GES_TRACK_OBJECT (tmp->data);
/* We make sure not to move the entire #TimelineObject */
ges_track_object_set_locked (tmpo, FALSE);
ges_track_object_set_priority (tmpo,
ges_track_object_get_priority (tmpo) + 1);
ges_track_object_set_locked (tmpo, TRUE);
}
priv->nb_effects++;
/* emit 'effect-added' */
g_signal_emit (object, ges_timeline_object_signals[EFFECT_ADDED], 0,
GES_TRACK_EFFECT (trobj));
}
object->priv->trackobjects =
g_list_insert_sorted_with_data (object->priv->trackobjects, trobj,
(GCompareDataFunc) sort_track_effects, object);
ges_track_object_set_start (trobj, object->start);
ges_track_object_set_duration (trobj, object->duration);
ges_track_object_set_inpoint (trobj, object->inpoint);
if (klass->track_object_added) {
GST_DEBUG ("Calling track_object_added subclass method");
klass->track_object_added (object, trobj);
} else {
GST_DEBUG ("%s doesn't have any track_object_added vfunc implementation",
G_OBJECT_CLASS_NAME (klass));
}
/* Listen to all property changes */
mapping->start_notifyid =
g_signal_connect (G_OBJECT (trobj), "notify::start",
G_CALLBACK (track_object_start_changed_cb), object);
mapping->duration_notifyid =
g_signal_connect (G_OBJECT (trobj), "notify::duration",
G_CALLBACK (track_object_duration_changed_cb), object);
mapping->inpoint_notifyid =
g_signal_connect (G_OBJECT (trobj), "notify::inpoint",
G_CALLBACK (track_object_inpoint_changed_cb), object);
mapping->priority_notifyid =
g_signal_connect (G_OBJECT (trobj), "notify::priority",
G_CALLBACK (track_object_priority_changed_cb), object);
get_layer_priorities (priv->layer, &min_prio, &max_prio);
ges_track_object_set_priority (trobj, min_prio + object->priority
+ mapping->priority_offset);
GST_DEBUG ("Returning trobj:%p", trobj);
if (!GES_IS_TRACK_PARSE_LAUNCH_EFFECT (trobj)) {
g_signal_emit (object, ges_timeline_object_signals[TRACK_OBJECT_ADDED], 0,
GES_TRACK_OBJECT (trobj));
}
return TRUE;
}
/**
* ges_timeline_object_release_track_object:
* @object: a #GESTimelineObject
* @trackobject: the #GESTrackObject to release
*
* Release the @trackobject from the control of @object.
*
* Returns: %TRUE if the @trackobject was properly released, else %FALSE.
*/
gboolean
ges_timeline_object_release_track_object (GESTimelineObject * object,
GESTrackObject * trackobject)
{
GList *tmp;
ObjectMapping *mapping = NULL;
GESTimelineObjectClass *klass = GES_TIMELINE_OBJECT_GET_CLASS (object);
GST_DEBUG ("object:%p, trackobject:%p", object, trackobject);
if (!(g_list_find (object->priv->trackobjects, trackobject))) {
GST_WARNING ("TrackObject isn't controlled by this object");
return FALSE;
}
for (tmp = object->priv->mappings; tmp; tmp = tmp->next) {
mapping = (ObjectMapping *) tmp->data;
if (mapping->object == trackobject)
break;
}
if (tmp && mapping) {
/* Disconnect all notify listeners */
g_signal_handler_disconnect (trackobject, mapping->start_notifyid);
g_signal_handler_disconnect (trackobject, mapping->duration_notifyid);
g_signal_handler_disconnect (trackobject, mapping->inpoint_notifyid);
g_signal_handler_disconnect (trackobject, mapping->priority_notifyid);
g_slice_free (ObjectMapping, mapping);
object->priv->mappings = g_list_delete_link (object->priv->mappings, tmp);
}
object->priv->trackobjects =
g_list_remove (object->priv->trackobjects, trackobject);
if (GES_IS_TRACK_EFFECT (trackobject)) {
/* emit 'object-removed' */
g_signal_emit (object, ges_timeline_object_signals[EFFECT_REMOVED], 0,
GES_TRACK_EFFECT (trackobject));
}
ges_track_object_set_timeline_object (trackobject, NULL);
GST_DEBUG ("Removing reference to track object %p", trackobject);
if (klass->track_object_released) {
GST_DEBUG ("Calling track_object_released subclass method");
klass->track_object_released (object, trackobject);
}
g_object_unref (trackobject);
/* FIXME : resync properties ? */
return TRUE;
}
void
ges_timeline_object_set_layer (GESTimelineObject * object,
GESTimelineLayer * layer)
{
GST_DEBUG ("object:%p, layer:%p", object, layer);
object->priv->layer = layer;
}
gboolean
ges_timeline_object_fill_track_object (GESTimelineObject * object,
GESTrackObject * trackobj, GstElement * gnlobj)
{
GESTimelineObjectClass *class;
gboolean res = TRUE;
GST_DEBUG ("object:%p, trackobject:%p, gnlobject:%p",
object, trackobj, gnlobj);
class = GES_TIMELINE_OBJECT_GET_CLASS (object);
if (class->need_fill_track) {
if (G_UNLIKELY (class->fill_track_object == NULL)) {
GST_WARNING ("No 'fill_track_object' implementation available");
return FALSE;
}
res = class->fill_track_object (object, trackobj, gnlobj);
}
GST_DEBUG ("Returning res:%d", res);
return res;
}
gboolean
ges_timeline_object_fill_track_object_func (GESTimelineObject * object,
GESTrackObject * trackobj, GstElement * gnlobj)
{
GST_WARNING ("No 'fill_track_object' implementation !");
return FALSE;
}
static ObjectMapping *
find_object_mapping (GESTimelineObject * object, GESTrackObject * child)
{
GList *tmp;
for (tmp = object->priv->mappings; tmp; tmp = tmp->next) {
ObjectMapping *map = (ObjectMapping *) tmp->data;
if (map->object == child)
return map;
}
return NULL;
}
static gboolean
ges_timeline_object_set_start_internal (GESTimelineObject * object,
guint64 start)
{
GList *tmp;
GESTrackObject *tr;
ObjectMapping *map;
GST_DEBUG ("object:%p, start:%" GST_TIME_FORMAT,
object, GST_TIME_ARGS (start));
object->priv->ignore_notifies = TRUE;
for (tmp = object->priv->trackobjects; tmp; tmp = g_list_next (tmp)) {
tr = (GESTrackObject *) tmp->data;
map = find_object_mapping (object, tr);
if (ges_track_object_is_locked (tr)) {
/* Move the child... */
ges_track_object_set_start (tr, start + map->start_offset);
} else {
/* ... or update the offset */
map->start_offset = start - tr->start;
}
}
object->priv->ignore_notifies = FALSE;
object->start = start;
return TRUE;
}
/**
* ges_timeline_object_set_start:
* @object: a #GESTimelineObject
* @start: the position in #GstClockTime
*
* Set the position of the object in its containing layer
*/
void
ges_timeline_object_set_start (GESTimelineObject * object, guint64 start)
{
if (ges_timeline_object_set_start_internal (object, start))
#if GLIB_CHECK_VERSION(2,26,0)
g_object_notify_by_pspec (G_OBJECT (object), properties[PROP_START]);
#else
g_object_notify (G_OBJECT (object), "start");
#endif
}
static gboolean
ges_timeline_object_set_inpoint_internal (GESTimelineObject * object,
guint64 inpoint)
{
GList *tmp;
GESTrackObject *tr;
GST_DEBUG ("object:%p, inpoint:%" GST_TIME_FORMAT,
object, GST_TIME_ARGS (inpoint));
for (tmp = object->priv->trackobjects; tmp; tmp = g_list_next (tmp)) {
tr = (GESTrackObject *) tmp->data;
if (ges_track_object_is_locked (tr))
/* call set_inpoint on each trackobject */
ges_track_object_set_inpoint (tr, inpoint);
}
object->inpoint = inpoint;
return TRUE;
}
/**
* ges_timeline_object_set_inpoint:
* @object: a #GESTimelineObject
* @inpoint: the in-point in #GstClockTime
*
* Set the in-point, that is the moment at which the @object will start
* outputting data from its contents.
*/
void
ges_timeline_object_set_inpoint (GESTimelineObject * object, guint64 inpoint)
{
if (ges_timeline_object_set_inpoint_internal (object, inpoint))
#if GLIB_CHECK_VERSION(2,26,0)
g_object_notify_by_pspec (G_OBJECT (object), properties[PROP_INPOINT]);
#else
g_object_notify (G_OBJECT (object), "in-point");
#endif
}
static gboolean
ges_timeline_object_set_duration_internal (GESTimelineObject * object,
guint64 duration)
{
GList *tmp;
GESTrackObject *tr;
GST_DEBUG ("object:%p, duration:%" GST_TIME_FORMAT,
object, GST_TIME_ARGS (duration));
for (tmp = object->priv->trackobjects; tmp; tmp = g_list_next (tmp)) {
tr = (GESTrackObject *) tmp->data;
if (ges_track_object_is_locked (tr))
/* call set_duration on each trackobject */
ges_track_object_set_duration (tr, duration);
}
object->duration = duration;
return TRUE;
}
/**
* ges_timeline_object_set_duration:
* @object: a #GESTimelineObject
* @duration: the duration in #GstClockTime
*
* Set the duration of the object
*/
void
ges_timeline_object_set_duration (GESTimelineObject * object, guint64 duration)
{
if (ges_timeline_object_set_duration_internal (object, duration))
#if GLIB_CHECK_VERSION(2,26,0)
g_object_notify_by_pspec (G_OBJECT (object), properties[PROP_DURATION]);
#else
g_object_notify (G_OBJECT (object), "duration");
#endif
}
static gboolean
ges_timeline_object_set_priority_internal (GESTimelineObject * object,
guint priority)
{
GList *tmp;
GESTrackObject *tr;
ObjectMapping *map;
GESTimelineObjectPrivate *priv = object->priv;
guint32 layer_min_gnl_prio, layer_max_gnl_prio;
GST_DEBUG ("object:%p, priority:%" G_GUINT32_FORMAT, object, priority);
priv->ignore_notifies = TRUE;
object->priv->ignore_notifies = TRUE;
get_layer_priorities (priv->layer, &layer_min_gnl_prio, &layer_max_gnl_prio);
for (tmp = priv->trackobjects; tmp; tmp = g_list_next (tmp)) {
tr = (GESTrackObject *) tmp->data;
map = find_object_mapping (object, tr);
if (ges_track_object_is_locked (tr)) {
guint32 real_tck_prio;
/* Move the child... */
real_tck_prio = layer_min_gnl_prio + priority + map->priority_offset;
if (real_tck_prio > layer_max_gnl_prio) {
GST_WARNING ("%p priority of %i, is outside of the its containing "
"layer space. (%d/%d) setting it to the maximum it can be", object,
priority, layer_min_gnl_prio, layer_max_gnl_prio);
real_tck_prio = layer_max_gnl_prio;
}
ges_track_object_set_priority (tr, real_tck_prio);
} else {
/* ... or update the offset */
map->priority_offset = layer_min_gnl_prio + priority - tr->priority;
}
}
priv->trackobjects = g_list_sort_with_data (priv->trackobjects,
(GCompareDataFunc) sort_track_effects, object);
priv->ignore_notifies = FALSE;
object->priority = priority;
return TRUE;
}
/**
* ges_timeline_object_set_moving_from_layer:
* @object: a #GESTimelineObject
* @is_moving: %TRUE if you want to start moving @object to another layer
* %FALSE when you finished moving it.
*
* Sets the object in a moving to layer state. You might rather use the
* ges_timeline_object_move_to_layer function to move #GESTimelineObject-s
* from a layer to another.
**/
void
ges_timeline_object_set_moving_from_layer (GESTimelineObject * object,
gboolean is_moving)
{
object->priv->is_moving = is_moving;
}
/**
* ges_timeline_object_is_moving_from_layer:
* @object: a #GESTimelineObject
*
* Tells you if the object is currently moving from a layer to another.
* You might rather use the ges_timeline_object_move_to_layer function to
* move #GESTimelineObject-s from a layer to another.
*
*
* Returns: %TRUE if @object is currently moving from its current layer
* %FALSE otherwize
**/
gboolean
ges_timeline_object_is_moving_from_layer (GESTimelineObject * object)
{
return object->priv->is_moving;
}
/**
* ges_timeline_object_move_to_layer:
* @object: a #GESTimelineObject
* @layer: the new #GESTimelineLayer
*
* Moves @object to @layer. If @object is not in any layer, it adds it to
* @layer, else, it removes it from its current layer, and adds it to @layer.
*
* Returns: %TRUE if @object could be moved %FALSE otherwize
*/
gboolean
ges_timeline_object_move_to_layer (GESTimelineObject * object, GESTimelineLayer
* layer)
{
gboolean ret;
GESTimelineLayer *current_layer = object->priv->layer;
if (current_layer == NULL) {
GST_DEBUG ("Not moving %p, only adding it to %p", object, layer);
return ges_timeline_layer_add_object (layer, object);
}
object->priv->is_moving = TRUE;
g_object_ref (object);
ret = ges_timeline_layer_remove_object (current_layer, object);
if (!ret) {
g_object_unref (object);
return FALSE;
}
ret = ges_timeline_layer_add_object (layer, object);
object->priv->is_moving = FALSE;
g_object_unref (object);
return ret;
}
/**
* ges_timeline_object_set_priority:
* @object: a #GESTimelineObject
* @priority: the priority
*
* Sets the priority of the object within the containing layer
*/
void
ges_timeline_object_set_priority (GESTimelineObject * object, guint priority)
{
if (ges_timeline_object_set_priority_internal (object, priority))
#if GLIB_CHECK_VERSION(2,26,0)
g_object_notify_by_pspec (G_OBJECT (object), properties[PROP_PRIORITY]);
#else
g_object_notify (G_OBJECT (object), "priority");
#endif
}
/**
* ges_timeline_object_find_track_object:
* @object: a #GESTimelineObject
* @track: a #GESTrack or NULL
* @type: a #GType indicating the type of track object you are looking
* for or %G_TYPE_NONE if you do not care about the track type.
*
* Finds the #GESTrackObject controlled by @object that is used in @track. You
* may optionally specify a GType to further narrow search criteria.
*
* Note: If many objects match, then the one with the highest priority will be
* returned.
*
* Returns: (transfer full): The #GESTrackObject used by @track, else %NULL.
* Unref after usage.
*/
GESTrackObject *
ges_timeline_object_find_track_object (GESTimelineObject * object,
GESTrack * track, GType type)
{
GESTrackObject *ret = NULL;
GList *tmp;
GESTrackObject *otmp;
g_return_val_if_fail (GES_IS_TIMELINE_OBJECT (object), NULL);
g_return_val_if_fail (GES_IS_TRACK (track), NULL);
for (tmp = object->priv->trackobjects; tmp; tmp = g_list_next (tmp)) {
otmp = (GESTrackObject *) tmp->data;
if (ges_track_object_get_track (otmp) == track) {
if ((type != G_TYPE_NONE) &&
!G_TYPE_CHECK_INSTANCE_TYPE (tmp->data, type))
continue;
ret = GES_TRACK_OBJECT (tmp->data);
g_object_ref (ret);
break;
}
}
return ret;
}
/**
* ges_timeline_object_get_layer:
* @object: a #GESTimelineObject
*
* Get the #GESTimelineLayer to which this object belongs.
*
* Returns: (transfer full): The #GESTimelineLayer where this @object is being
* used, or %NULL if it is not used on any layer. The caller should unref it
* usage.
*/
GESTimelineLayer *
ges_timeline_object_get_layer (GESTimelineObject * object)
{
g_return_val_if_fail (GES_IS_TIMELINE_OBJECT (object), NULL);
if (object->priv->layer != NULL)
g_object_ref (G_OBJECT (object->priv->layer));
return object->priv->layer;
}
/**
* ges_timeline_object_get_track_objects:
* @object: a #GESTimelineObject
*
* Get the list of #GESTrackObject contained in @object
*
* Returns: (transfer full) (element-type GESTrackObject): The list of
* trackobject contained in @object.
* The user is responsible for unreffing the contained objects
* and freeing the list.
*/
GList *
ges_timeline_object_get_track_objects (GESTimelineObject * object)
{
GList *ret;
GList *tmp;
g_return_val_if_fail (GES_IS_TIMELINE_OBJECT (object), NULL);
ret = g_list_copy (object->priv->trackobjects);
for (tmp = ret; tmp; tmp = tmp->next) {
g_object_ref (tmp->data);
}
return ret;
}
static gint
sort_track_effects (gpointer a, gpointer b, GESTimelineObject * object)
{
guint prio_offset_a, prio_offset_b;
ObjectMapping *map_a, *map_b;
GESTrackObject *obj_a, *obj_b;
obj_a = GES_TRACK_OBJECT (a);
obj_b = GES_TRACK_OBJECT (b);
map_a = find_object_mapping (object, obj_a);
map_b = find_object_mapping (object, obj_b);
prio_offset_a = map_a->priority_offset;
prio_offset_b = map_b->priority_offset;
if ((gint) prio_offset_a > (guint) prio_offset_b)
return 1;
if ((guint) prio_offset_a < (guint) prio_offset_b)
return -1;
return 0;
}
/**
* ges_timeline_object_get_top_effects:
* @object: The origin #GESTimelineObject
*
* Get effects applied on @object
*
* Returns: (transfer full) (element-type GESTrackObject): a #GList of the
* #GESTrackEffect that are applied on @object order by ascendant priorities.
* The refcount of the objects will be increased. The user will have to
* unref each #GESTrackEffect and free the #GList.
*
* Since: 0.10.2
*/
GList *
ges_timeline_object_get_top_effects (GESTimelineObject * object)
{
GList *tmp, *ret;
guint i;
ret = NULL;
for (tmp = object->priv->trackobjects, i = 0; i < object->priv->nb_effects;
tmp = tmp->next, i++) {
ret = g_list_append (ret, tmp->data);
g_object_ref (tmp->data);
}
return ret;
}
/**
* ges_timeline_object_get_top_effect_position:
* @object: The origin #GESTimelineObject
* @effect: The #GESTrackEffect we want to get the top position from
*
* Gets the top position of an effect.
*
* Returns: The top position of the effect, -1 if something went wrong.
*
* Since: 0.10.2
*/
gint
ges_timeline_object_get_top_effect_position (GESTimelineObject * object,
GESTrackEffect * effect)
{
return find_object_mapping (object,
GES_TRACK_OBJECT (effect))->priority_offset;
}
/**
* ges_timeline_object_set_top_effect_priority:
* @object: The origin #GESTimelineObject
* @effect: The #GESTrackEffect to move
* @newpriority: the new position at which to move the @effect inside this
* #GESTimelineObject
*
* This is a convenience method that lets you set the priority of a top effect.
*
* Returns: %TRUE if @effect was successfuly moved, %FALSE otherwise.
*
* Since: 0.10.2
*/
gboolean
ges_timeline_object_set_top_effect_priority (GESTimelineObject * object,
GESTrackEffect * effect, guint newpriority)
{
GList *tmp;
gint inc;
GESTrackObject *tck_obj = GES_TRACK_OBJECT (effect);
GESTimelineObjectPrivate *priv = object->priv;
guint current_prio = ges_track_object_get_priority (tck_obj);
/* We don't change the priority */
if (current_prio == newpriority ||
(G_UNLIKELY (ges_track_object_get_timeline_object (tck_obj) != object)))
return FALSE;
if (newpriority > (object->priv->nb_effects - 1)) {
GST_DEBUG ("You are trying to make %p not a top effect", effect);
return FALSE;
}
if (current_prio > object->priv->nb_effects) {
GST_DEBUG ("%p is not a top effect");
return FALSE;
}
if (tck_obj->priority < newpriority)
inc = -1;
else
inc = +1;
ges_track_object_set_priority (tck_obj, newpriority);
for (tmp = priv->trackobjects; tmp; tmp = tmp->next) {
GESTrackObject *tmpo = GES_TRACK_OBJECT (tmp->data);
guint tck_priority = ges_track_object_get_priority (tmpo);
if ((inc == +1 && tck_priority >= newpriority) ||
(inc == -1 && tck_priority <= newpriority)) {
ges_track_object_set_priority (tmpo, tck_priority + inc);
}
}
priv->trackobjects = g_list_sort_with_data (priv->trackobjects,
(GCompareDataFunc) sort_track_effects, object);
return TRUE;
}
static void
update_height (GESTimelineObject * object)
{
GList *tmp;
guint32 min_prio = G_MAXUINT32, max_prio = 0;
/* Go over all childs and check if height has changed */
for (tmp = object->priv->trackobjects; tmp; tmp = tmp->next) {
guint tck_priority =
ges_track_object_get_priority (GES_TRACK_OBJECT (tmp->data));
if (tck_priority < min_prio)
min_prio = tck_priority;
if (tck_priority > max_prio)
max_prio = tck_priority;
}
/* FIXME : We only grow the height */
if (object->height < (max_prio - min_prio + 1)) {
object->height = max_prio - min_prio + 1;
GST_DEBUG ("Updating height %i", object->height);
#if GLIB_CHECK_VERSION(2,26,0)
g_object_notify_by_pspec (G_OBJECT (object), properties[PROP_HEIGHT]);
#else
g_object_notify (G_OBJECT (object), "height");
#endif
}
}
/**
* ges_timeline_object_set_supported_formats:
* @self: the #GESTimelineObject to set supported formats on
* @supportedformats: the #GESTrackType defining formats supported by @self
*
* Sets the formats supported by the file.
*
* Since: 0.10.XX
*/
void
ges_timeline_object_set_supported_formats (GESTimelineObject * self,
GESTrackType supportedformats)
{
self->priv->supportedformats = supportedformats;
}
/**
* ges_timeline_object_get_supported_formats:
* @self: the #GESTimelineObject
*
* Get the formats supported by @self.
*
* Returns: The formats supported by @self.
*
* Since: 0.10.XX
*/
GESTrackType
ges_timeline_object_get_supported_formats (GESTimelineObject * self)
{
return self->priv->supportedformats;
}
/*
* PROPERTY NOTIFICATIONS FROM TRACK OBJECTS
*/
static void
track_object_start_changed_cb (GESTrackObject * child,
GParamSpec * arg G_GNUC_UNUSED, GESTimelineObject * object)
{
ObjectMapping *map;
if (object->priv->ignore_notifies)
return;
map = find_object_mapping (object, child);
if (G_UNLIKELY (map == NULL))
/* something massively screwed up if we get this */
return;
if (!ges_track_object_is_locked (child)) {
/* Update the internal start_offset */
map->start_offset = object->start - child->start;
} else {
/* Or update the parent start */
ges_timeline_object_set_start (object, child->start + map->start_offset);
}
}
static void
track_object_inpoint_changed_cb (GESTrackObject * child,
GParamSpec * arg G_GNUC_UNUSED, GESTimelineObject * object)
{
if (object->priv->ignore_notifies)
return;
}
static void
track_object_duration_changed_cb (GESTrackObject * child,
GParamSpec * arg G_GNUC_UNUSED, GESTimelineObject * object)
{
if (object->priv->ignore_notifies)
return;
}
static void
track_object_priority_changed_cb (GESTrackObject * child,
GParamSpec * arg G_GNUC_UNUSED, GESTimelineObject * object)
{
ObjectMapping *map;
guint32 layer_min_gnl_prio, layer_max_gnl_prio;
guint tck_priority = ges_track_object_get_priority (child);
GST_DEBUG ("TrackObject %p priority changed to %i", child,
ges_track_object_get_priority (child));
if (object->priv->ignore_notifies)
return;
update_height (object);
map = find_object_mapping (object, child);
get_layer_priorities (object->priv->layer, &layer_min_gnl_prio,
&layer_max_gnl_prio);
if (G_UNLIKELY (map == NULL))
/* something massively screwed up if we get this */
return;
if (!ges_track_object_is_locked (child)) {
if (tck_priority < layer_min_gnl_prio || tck_priority > layer_max_gnl_prio) {
GST_WARNING ("%p priority of %i, is outside of its containing "
"layer space. (%d/%d). This is a bug in the program.", object,
tck_priority, layer_min_gnl_prio, layer_max_gnl_prio);
}
/* Update the internal priority_offset */
map->priority_offset =
(layer_min_gnl_prio + object->priority) - tck_priority;
} else if (tck_priority < layer_min_gnl_prio + object->priority) {
/* Or update the parent priority, the object priority is always the
* highest priority (smaller number) */
if (tck_priority - layer_min_gnl_prio < 0 ||
layer_max_gnl_prio - tck_priority < 0) {
GST_WARNING ("%p priority of %i, is outside of its containing "
"layer space. (%d/%d). This is a bug in the program.", object,
tck_priority, layer_min_gnl_prio, layer_max_gnl_prio);
return;
}
ges_timeline_object_set_priority (object,
tck_priority - layer_min_gnl_prio);
}
GST_DEBUG ("object %p priority %d child %p priority %d", object,
object->priority, child, ges_track_object_get_priority (child));
}
static void
get_layer_priorities (GESTimelineLayer * layer, guint32 * layer_min_gnl_prio,
guint32 * layer_max_gnl_prio)
{
if (layer) {
*layer_min_gnl_prio = layer->min_gnl_priority;
*layer_max_gnl_prio = layer->max_gnl_priority;
} else {
*layer_min_gnl_prio = 0;
*layer_max_gnl_prio = G_MAXUINT32;
}
}