gstreamer/ges/ges-clip.c

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/* GStreamer Editing Services
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* Copyright (C) 2009 Edward Hervey <edward.hervey@collabora.co.uk>
* 2009 Nokia Corporation
* 2012 Collabora Ltd.
* Author: Sebastian Dröge <sebastian.droege@collabora.co.uk>
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*
* 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
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
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*/
/**
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* SECTION:ges-clip
* @short_description: Base Class for objects in a GESTimelineLayer
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*
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* A #GESClip is a 'natural' object which controls one or more
* #GESTrackElement(s) in one or more #GESTrack(s).
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*
* Keeps a reference to the #GESTrackElement(s) it created and
* sets/updates their properties.
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*/
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#include "ges-clip.h"
#include "ges.h"
#include "ges-internal.h"
#include <string.h>
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gboolean
ges_clip_fill_track_element_func (GESClip * clip,
GESTrackElement * trackelement, GstElement * gnlobj);
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GList *ges_clip_create_track_elements_func (GESClip * clip, GESTrackType type);
static gboolean _ripple (GESTimelineElement * element, GstClockTime start);
static gboolean _ripple_end (GESTimelineElement * element, GstClockTime end);
static gboolean _roll_start (GESTimelineElement * element, GstClockTime start);
static gboolean _roll_end (GESTimelineElement * element, GstClockTime end);
static gboolean _trim (GESTimelineElement * element, GstClockTime start);
G_DEFINE_ABSTRACT_TYPE (GESClip, ges_clip, GES_TYPE_CONTAINER);
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struct _GESClipPrivate
{
/*< public > */
GESTimelineLayer *layer;
/*< private > */
/* Set to TRUE when the clip is doing updates of track element
* properties so we don't end up in infinite property update loops
*/
gboolean is_moving;
guint nb_effects;
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/* The formats supported by this Clip */
GESTrackType supportedformats;
};
typedef struct _CheckTrack
{
GESTrack *track;
GESTrackElement *source;
} CheckTrack;
enum
{
PROP_0,
PROP_LAYER,
PROP_SUPPORTED_FORMATS,
PROP_LAST
};
static GParamSpec *properties[PROP_LAST];
/****************************************************
* *
* GESContainer virtual methods implementation *
* *
****************************************************/
static guint32
_compute_height (GESContainer * container)
{
GList *tmp;
guint32 min_prio = G_MAXUINT32, max_prio = 0;
if (container->children == NULL)
return 0;
/* Go over all childs and check if height has changed */
for (tmp = container->children; tmp; tmp = tmp->next) {
guint tck_priority = _PRIORITY (tmp->data);
if (tck_priority < min_prio)
min_prio = tck_priority;
if (tck_priority > max_prio)
max_prio = tck_priority;
}
return max_prio - min_prio + 1;
}
static void
_get_priority_range (GESContainer * container, guint32 * min_priority,
guint32 * max_priority)
{
GESTimelineLayer *layer = GES_CLIP (container)->priv->layer;
if (layer) {
*min_priority = layer->min_gnl_priority;
*max_priority = layer->max_gnl_priority;
} else {
*min_priority = 0;
*max_priority = G_MAXUINT32;
}
}
static gboolean
_add_child (GESContainer * container, GESTimelineElement * element)
{
GList *tmp;
guint max_prio, min_prio;
GESClipPrivate *priv = GES_CLIP (container)->priv;
/* First make sure we work with a sorted list of GESTimelineElement-s */
_ges_container_sort_children (container);
/* If the TrackElement is an effect:
* - We add it on top of the list of TrackEffect
* - We put all TrackObject present in the TimelineObject
* which are not BaseEffect on top of them
* FIXME: Let the full control over priorities to the user
*/
_get_priority_range (container, &min_prio, &max_prio);
if (GES_IS_BASE_EFFECT (element)) {
GST_DEBUG_OBJECT (container, "Adding %ith effect: %" GST_PTR_FORMAT
" Priority %i", priv->nb_effects + 1, element,
GES_TIMELINE_ELEMENT_PRIORITY (container) + priv->nb_effects);
tmp = g_list_nth (GES_CONTAINER_CHILDREN (container), priv->nb_effects);
for (; tmp; tmp = tmp->next)
ges_timeline_element_set_priority (GES_TIMELINE_ELEMENT (tmp->data),
GES_TIMELINE_ELEMENT_PRIORITY (tmp->data) + 1);
_set_priority0 (element, min_prio +
GES_TIMELINE_ELEMENT_PRIORITY (container) + priv->nb_effects);
priv->nb_effects++;
} else {
/* We add the track element on top of the effect list */
_set_priority0 (element, min_prio +
GES_TIMELINE_ELEMENT_PRIORITY (container) + priv->nb_effects);
}
/* We set the timing value of the child to ours, we avoid infinite loop
* making sure the container ignore notifies from the child */
_ges_container_set_children_control_mode (container,
GES_CHILDREN_IGNORE_NOTIFIES);
_set_start0 (element, GES_TIMELINE_ELEMENT_START (container));
_set_inpoint0 (element, GES_TIMELINE_ELEMENT_INPOINT (container));
_set_duration0 (element, GES_TIMELINE_ELEMENT_DURATION (container));
_ges_container_set_children_control_mode (container, GES_CHILDREN_UPDATE);
return TRUE;
}
static gboolean
_remove_child (GESContainer * container, GESTimelineElement * element)
{
if (GES_IS_BASE_EFFECT (element))
GES_CLIP (container)->priv->nb_effects--;
GST_FIXME_OBJECT (container, "We should set other children prios");
return TRUE;
}
static void
add_tlobj_to_list (gpointer key, gpointer tlobj, GList ** list)
{
*list = g_list_prepend (*list, gst_object_ref (tlobj));
}
static GList *
_ungroup (GESContainer * container, gboolean recursive)
{
GList *tmp, *ret = NULL;
GESClip *tmpclip;
GESTrackType track_type;
GESTrackElement *track_element;
gboolean first_obj = TRUE;
GESClip *clip = GES_CLIP (container);
GESTimelineElement *element = GES_TIMELINE_ELEMENT (container);
GESTimelineLayer *layer = clip->priv->layer;
GHashTable *_tracktype_clip = g_hash_table_new (g_int_hash, g_int_equal);
/* If there is no TrackElement, just return @container in a list */
if (GES_CONTAINER_CHILDREN (container) == NULL) {
GST_DEBUG ("No TrackElement, simply returning");
return g_list_prepend (ret, container);
}
/* We need a copy of the current list of tracks */
for (tmp = GES_CONTAINER_CHILDREN (container); tmp; tmp = tmp->next) {
track_element = GES_TRACK_ELEMENT (tmp->data);
track_type = ges_track_element_get_track_type (track_element);
tmpclip = g_hash_table_lookup (_tracktype_clip, &track_type);
if (tmpclip == NULL) {
if (G_UNLIKELY (first_obj == TRUE)) {
tmpclip = clip;
first_obj = FALSE;
} else {
tmpclip = GES_CLIP (ges_timeline_element_copy (element, FALSE));
if (layer) {
/* Add new container to the same layer as @container */
ges_clip_set_moving_from_layer (tmpclip, TRUE);
ges_timeline_layer_add_clip (layer, tmpclip);
ges_clip_set_moving_from_layer (tmpclip, FALSE);
}
}
g_hash_table_insert (_tracktype_clip, &track_type, tmpclip);
ges_clip_set_supported_formats (tmpclip, track_type);
}
/* Move trackelement to the container it is supposed to land into */
if (tmpclip != clip) {
/* We need to bump the refcount to avoid the object to be destroyed */
gst_object_ref (track_element);
ges_container_remove (container, GES_TIMELINE_ELEMENT (track_element));
ges_container_add (GES_CONTAINER (tmpclip),
GES_TIMELINE_ELEMENT (track_element));
gst_object_unref (track_element);
}
}
g_hash_table_foreach (_tracktype_clip, (GHFunc) add_tlobj_to_list, &ret);
g_hash_table_unref (_tracktype_clip);
return ret;
}
static GESContainer *
_group (GList * containers)
{
CheckTrack *tracks = NULL;
GESTimeline *timeline = NULL;
GESTrackType supported_formats;
GESTimelineLayer *layer = NULL;
GList *tmp, *tmpclip, *tmpelement;
GstClockTime start, inpoint, duration;
GESAsset *asset = NULL;
GESContainer *ret = NULL;
guint nb_tracks = 0, i = 0;
start = inpoint = duration = GST_CLOCK_TIME_NONE;
/* First check if all the containers are clips, if they
* all have the same start/inpoint/duration and are in the same
* layer.
*
* We also need to make sure that all source have been created by the
* same asset, keep the information */
for (tmp = containers; tmp; tmp = tmp->next) {
GESClip *clip;
GESTimeline *tmptimeline;
GESContainer *tmpcontainer;
GESTimelineElement *element;
tmpcontainer = GES_CONTAINER (tmp->data);
element = GES_TIMELINE_ELEMENT (tmp->data);
if (GES_IS_CLIP (element) == FALSE) {
GST_DEBUG ("Can only work with clips");
goto done;
}
clip = GES_CLIP (tmp->data);
tmptimeline = ges_timeline_element_get_timeline (element);
if (!timeline) {
GList *tmptrack;
start = _START (tmpcontainer);
inpoint = _INPOINT (tmpcontainer);
duration = _DURATION (tmpcontainer);
timeline = tmptimeline;
layer = clip->priv->layer;
nb_tracks = g_list_length (GES_TIMELINE_GET_TRACKS (timeline));
tracks = g_new0 (CheckTrack, nb_tracks);
for (tmptrack = GES_TIMELINE_GET_TRACKS (timeline); tmptrack;
tmptrack = tmptrack->next) {
tracks[i].track = tmptrack->data;
i++;
}
} else {
if (start != _START (tmpcontainer) ||
inpoint != _INPOINT (tmpcontainer) ||
duration != _DURATION (tmpcontainer) || clip->priv->layer != layer) {
GST_INFO ("All children must have the same start, inpoint, duration "
" and be in the same layer");
goto done;
} else {
GList *tmp2;
for (tmp2 = GES_CONTAINER_CHILDREN (tmp->data); tmp2; tmp2 = tmp2->next) {
GESTrackElement *track_element = GES_TRACK_ELEMENT (tmp2->data);
if (GES_IS_SOURCE (track_element)) {
guint i;
for (i = 0; i < nb_tracks; i++) {
if (tracks[i].track ==
ges_track_element_get_track (track_element)) {
if (tracks[i].source) {
GST_INFO ("Can not link clips with various source for a "
"same track");
goto done;
}
tracks[i].source = track_element;
break;
}
}
}
}
}
}
}
/* Then check that all sources have been created by the same asset,
* otherwise we can not group */
for (i = 0; i < nb_tracks; i++) {
if (tracks[i].source == NULL) {
GST_FIXME ("Check what to do here as we might end up having a mess");
continue;
}
/* FIXME Check what to do if we have source that have no assets */
if (!asset) {
asset =
ges_extractable_get_asset (GES_EXTRACTABLE
(ges_timeline_element_get_parent (GES_TIMELINE_ELEMENT (tracks
[i].source))));
continue;
}
if (asset !=
ges_extractable_get_asset (GES_EXTRACTABLE
(ges_timeline_element_get_parent (GES_TIMELINE_ELEMENT (tracks
[i].source))))) {
GST_INFO ("Can not link clips with source coming from different assets");
goto done;
}
}
/* And now pass all TrackElements to the first clip,
* and remove others from the layer (updating the supported formats) */
ret = containers->data;
supported_formats = GES_CLIP (ret)->priv->supportedformats;
for (tmpclip = containers->next; tmpclip; tmpclip = tmpclip->next) {
GESClip *cclip = tmpclip->data;
for (tmpelement = GES_CONTAINER_CHILDREN (cclip); tmpelement;
tmpelement = tmpelement->next) {
GESTimelineElement *celement = GES_TIMELINE_ELEMENT (tmpelement->data);
/* We need to bump the refcount to avoid the object to be destroyed */
gst_object_ref (celement);
ges_container_remove (GES_CONTAINER (cclip), celement);
ges_container_add (ret, celement);
gst_object_unref (celement);
supported_formats = supported_formats |
ges_track_element_get_track_type (GES_TRACK_ELEMENT (celement));
}
ges_timeline_layer_remove_clip (layer, tmpclip->data);
}
ges_clip_set_supported_formats (GES_CLIP (ret), supported_formats);
done:
if (tracks)
g_free (tracks);
return ret;
}
/****************************************************
* *
* GObject virtual methods implementation *
* *
****************************************************/
static void
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ges_clip_get_property (GObject * object, guint property_id,
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GValue * value, GParamSpec * pspec)
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{
GESClip *clip = GES_CLIP (object);
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switch (property_id) {
case PROP_LAYER:
g_value_set_object (value, clip->priv->layer);
break;
case PROP_SUPPORTED_FORMATS:
g_value_set_flags (value, clip->priv->supportedformats);
break;
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default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
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}
}
static void
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ges_clip_set_property (GObject * object, guint property_id,
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const GValue * value, GParamSpec * pspec)
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{
GESClip *clip = GES_CLIP (object);
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switch (property_id) {
case PROP_SUPPORTED_FORMATS:
ges_clip_set_supported_formats (clip, g_value_get_flags (value));
break;
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default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
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}
}
static void
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ges_clip_class_init (GESClipClass * klass)
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{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
GESContainerClass *container_class = GES_CONTAINER_CLASS (klass);
GESTimelineElementClass *element_class = GES_TIMELINE_ELEMENT_CLASS (klass);
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g_type_class_add_private (klass, sizeof (GESClipPrivate));
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object_class->get_property = ges_clip_get_property;
object_class->set_property = ges_clip_set_property;
klass->create_track_elements = ges_clip_create_track_elements_func;
klass->create_track_element = NULL;
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/**
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* GESClip:supported-formats:
*
* The formats supported by the clip.
*
* 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_AUDIO | GES_TRACK_TYPE_VIDEO,
G_PARAM_READWRITE | G_PARAM_CONSTRUCT);
g_object_class_install_property (object_class, PROP_SUPPORTED_FORMATS,
properties[PROP_SUPPORTED_FORMATS]);
/**
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* GESClip:layer:
*
* The GESTimelineLayer where this clip is being used.
*/
properties[PROP_LAYER] = g_param_spec_object ("layer", "Layer",
"The GESTimelineLayer where this clip is being used.",
GES_TYPE_TIMELINE_LAYER, G_PARAM_READABLE);
g_object_class_install_property (object_class, PROP_LAYER,
properties[PROP_LAYER]);
element_class->ripple = _ripple;
element_class->ripple_end = _ripple_end;
element_class->roll_start = _roll_start;
element_class->roll_end = _roll_end;
element_class->trim = _trim;
/* TODO implement the deep_copy Virtual method */
container_class->get_priority_range = _get_priority_range;
container_class->compute_height = _compute_height;
container_class->add_child = _add_child;
container_class->remove_child = _remove_child;
container_class->ungroup = _ungroup;
container_class->group = _group;
container_class->grouping_priority = G_MAXUINT;
klass->need_fill_track = TRUE;
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}
static void
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ges_clip_init (GESClip * self)
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{
self->priv = G_TYPE_INSTANCE_GET_PRIVATE (self,
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GES_TYPE_CLIP, GESClipPrivate);
/* FIXME, check why it was done this way _DURATION (self) = GST_SECOND; */
self->priv->layer = NULL;
self->priv->nb_effects = 0;
self->priv->is_moving = FALSE;
}
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/**
* ges_clip_create_track_element:
* @clip: The origin #GESClip
* @type: The #GESTrackType to create a #GESTrackElement for.
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*
* Creates a #GESTrackElement for the provided @type. The clip
* keep a reference to the newly created trackelement, you therefore need to
* call @ges_container_remove when you are done with it.
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*
* Returns: (transfer none): A #GESTrackElement. Returns NULL if the #GESTrackElement could not
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* be created.
*/
GESTrackElement *
ges_clip_create_track_element (GESClip * clip, GESTrackType type)
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{
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GESClipClass *class;
GESTrackElement *res;
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g_return_val_if_fail (GES_IS_CLIP (clip), NULL);
GST_DEBUG_OBJECT (clip, "Creating track element for %s",
ges_track_type_name (type));
if (!(type & clip->priv->supportedformats)) {
GST_DEBUG_OBJECT (clip, "We don't support this track type %i", type);
return NULL;
}
class = GES_CLIP_GET_CLASS (clip);
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if (G_UNLIKELY (class->create_track_element == NULL)) {
GST_ERROR ("No 'create_track_element' implementation available fo type %s",
G_OBJECT_TYPE_NAME (clip));
return NULL;
}
res = class->create_track_element (clip, type);
return res;
}
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/**
* ges_clip_create_track_elements:
* @clip: The origin #GESClip
* @type: The #GESTrackType to create each #GESTrackElement for.
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*
* Creates all #GESTrackElements supported by this clip for the track type.
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*
* Returns: (element-type GESTrackElement) (transfer full): A #GList of
* newly created #GESTrackElement-s
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*/
GList *
ges_clip_create_track_elements (GESClip * clip, GESTrackType type)
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{
GList *result, *tmp;
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GESClipClass *klass;
guint max_prio, min_prio;
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g_return_val_if_fail (GES_IS_CLIP (clip), NULL);
klass = GES_CLIP_GET_CLASS (clip);
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if (!(klass->create_track_elements)) {
GST_WARNING ("no GESClip::create_track_elements implentation");
return NULL;
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}
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GST_DEBUG_OBJECT (clip, "Creating TrackElements for type: %s",
ges_track_type_name (type));
result = klass->create_track_elements (clip, type);
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_get_priority_range (GES_CONTAINER (clip), &min_prio, &max_prio);
for (tmp = result; tmp; tmp = tmp->next) {
GESTimelineElement *elem = tmp->data;
_set_start0 (elem, GES_TIMELINE_ELEMENT_START (clip));
_set_inpoint0 (elem, GES_TIMELINE_ELEMENT_INPOINT (clip));
_set_duration0 (elem, GES_TIMELINE_ELEMENT_DURATION (clip));
if (GST_CLOCK_TIME_IS_VALID (GES_TIMELINE_ELEMENT_MAX_DURATION (clip)))
ges_timeline_element_set_max_duration (GES_TIMELINE_ELEMENT (elem),
GES_TIMELINE_ELEMENT_MAX_DURATION (clip));
_set_priority0 (elem, min_prio + GES_TIMELINE_ELEMENT_PRIORITY (clip)
+ clip->priv->nb_effects);
ges_container_add (GES_CONTAINER (clip), elem);
}
return result;
}
/*
* default implementation of GESClipClass::create_track_elements
*/
GList *
ges_clip_create_track_elements_func (GESClip * clip, GESTrackType type)
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{
GESTrackElement *result;
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GST_DEBUG_OBJECT (clip, "Creating trackelement for track: %s",
ges_track_type_name (type));
result = ges_clip_create_track_element (clip, type);
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if (!result) {
GST_DEBUG ("Did not create track element");
return NULL;
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}
return g_list_append (NULL, result);
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}
void
ges_clip_set_layer (GESClip * clip, GESTimelineLayer * layer)
{
GST_DEBUG ("clip:%p, layer:%p", clip, layer);
clip->priv->layer = layer;
/* We do not want to notify the setting of layer = NULL when
* it is actually the result of a move between layer (as we know
* that it will be added to another layer right after, and this
* is what imports here.) */
if (layer || clip->priv->is_moving == FALSE)
g_object_notify_by_pspec (G_OBJECT (clip), properties[PROP_LAYER]);
}
gboolean
ges_clip_fill_track_element (GESClip * clip,
GESTrackElement * trackelement, GstElement * gnlobj)
{
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GESClipClass *class;
gboolean res = TRUE;
GST_DEBUG ("clip:%p, trackelement:%p, gnlobject:%p",
clip, trackelement, gnlobj);
class = GES_CLIP_GET_CLASS (clip);
if (class->need_fill_track) {
if (G_UNLIKELY (class->fill_track_element == NULL)) {
GST_WARNING ("No 'fill_track_element' implementation available");
return FALSE;
}
res = class->fill_track_element (clip, trackelement, gnlobj);
}
GST_DEBUG ("Returning res:%d", res);
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return res;
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}
gboolean
ges_clip_fill_track_element_func (GESClip * clip,
GESTrackElement * trackelement, GstElement * gnlobj)
{
GST_WARNING ("No 'fill_track_element' implementation !");
return FALSE;
}
/**
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* ges_clip_set_moving_from_layer:
* @clip: a #GESClip
* @is_moving: %TRUE if you want to start moving @clip to another layer
* %FALSE when you finished moving it.
*
* Sets the clip in a moving to layer state. You might rather use the
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* ges_clip_move_to_layer function to move #GESClip-s
* from a layer to another.
**/
void
ges_clip_set_moving_from_layer (GESClip * clip, gboolean is_moving)
{
g_return_if_fail (GES_IS_CLIP (clip));
clip->priv->is_moving = is_moving;
}
/**
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* ges_clip_is_moving_from_layer:
* @clip: a #GESClip
*
* Tells you if the clip is currently moving from a layer to another.
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* You might rather use the ges_clip_move_to_layer function to
* move #GESClip-s from a layer to another.
*
*
* Returns: %TRUE if @clip is currently moving from its current layer
* %FALSE otherwize
**/
gboolean
ges_clip_is_moving_from_layer (GESClip * clip)
{
g_return_val_if_fail (GES_IS_CLIP (clip), FALSE);
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return clip->priv->is_moving;
}
/**
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* ges_clip_move_to_layer:
* @clip: a #GESClip
* @layer: the new #GESTimelineLayer
*
* Moves @clip to @layer. If @clip 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 @clip could be moved %FALSE otherwize
*/
gboolean
ges_clip_move_to_layer (GESClip * clip, GESTimelineLayer * layer)
{
gboolean ret;
GESTimelineLayer *current_layer;
g_return_val_if_fail (GES_IS_CLIP (clip), FALSE);
g_return_val_if_fail (GES_IS_TIMELINE_LAYER (layer), FALSE);
current_layer = clip->priv->layer;
if (current_layer == NULL) {
GST_DEBUG ("Not moving %p, only adding it to %p", clip, layer);
return ges_timeline_layer_add_clip (layer, clip);
}
GST_DEBUG_OBJECT (clip, "moving to layer %p, priority: %d", layer,
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ges_timeline_layer_get_priority (layer));
clip->priv->is_moving = TRUE;
gst_object_ref (clip);
ret = ges_timeline_layer_remove_clip (current_layer, clip);
if (!ret) {
gst_object_unref (clip);
return FALSE;
}
ret = ges_timeline_layer_add_clip (layer, clip);
clip->priv->is_moving = FALSE;
gst_object_unref (clip);
return ret;
}
/**
* ges_clip_find_track_element:
* @clip: a #GESClip
* @track: a #GESTrack or NULL
* @type: a #GType indicating the type of track element you are looking
* for or %G_TYPE_NONE if you do not care about the track type.
*
* Finds the #GESTrackElement controlled by @clip that is used in @track. You
* may optionally specify a GType to further narrow search criteria.
*
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* Note: If many objects match, then the one with the highest priority will be
* returned.
*
* Returns: (transfer full): The #GESTrackElement used by @track, else %NULL.
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* Unref after usage.
*/
GESTrackElement *
ges_clip_find_track_element (GESClip * clip, GESTrack * track, GType type)
{
GESTrackElement *ret = NULL;
GList *tmp;
GESTrackElement *otmp;
g_return_val_if_fail (GES_IS_CLIP (clip), NULL);
g_return_val_if_fail (GES_IS_TRACK (track), NULL);
for (tmp = GES_CONTAINER_CHILDREN (clip); tmp; tmp = g_list_next (tmp)) {
otmp = (GESTrackElement *) tmp->data;
if (ges_track_element_get_track (otmp) == track) {
if ((type != G_TYPE_NONE) &&
!G_TYPE_CHECK_INSTANCE_TYPE (tmp->data, type))
continue;
ret = GES_TRACK_ELEMENT (tmp->data);
gst_object_ref (ret);
break;
}
}
return ret;
}
/**
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* ges_clip_get_layer:
* @clip: a #GESClip
*
* Get the #GESTimelineLayer to which this clip belongs.
*
* Returns: (transfer full): The #GESTimelineLayer where this @clip is being
* used, or %NULL if it is not used on any layer. The caller should unref it
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* usage.
*/
GESTimelineLayer *
ges_clip_get_layer (GESClip * clip)
{
g_return_val_if_fail (GES_IS_CLIP (clip), NULL);
if (clip->priv->layer != NULL)
gst_object_ref (G_OBJECT (clip->priv->layer));
return clip->priv->layer;
}
/**
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* ges_clip_get_top_effects:
* @clip: The origin #GESClip
*
* Get effects applied on @clip
*
* Returns: (transfer full) (element-type GESTrackElement): a #GList of the
* #GESBaseEffect that are applied on @clip order by ascendant priorities.
* The refcount of the objects will be increased. The user will have to
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* unref each #GESBaseEffect and free the #GList.
*
* Since: 0.10.2
*/
GList *
ges_clip_get_top_effects (GESClip * clip)
{
GList *tmp, *ret;
guint i;
g_return_val_if_fail (GES_IS_CLIP (clip), NULL);
GST_DEBUG_OBJECT (clip, "Getting the %i top effects", clip->priv->nb_effects);
ret = NULL;
for (tmp = GES_CONTAINER_CHILDREN (clip), i = 0;
i < clip->priv->nb_effects; tmp = tmp->next, i++) {
ret = g_list_append (ret, gst_object_ref (tmp->data));
}
return g_list_sort (ret, (GCompareFunc) element_start_compare);
}
/**
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* ges_clip_get_top_effect_position:
* @clip: The origin #GESClip
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* @effect: The #GESBaseEffect 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_clip_get_top_effect_position (GESClip * clip, GESBaseEffect * effect)
{
guint max_prio, min_prio;
g_return_val_if_fail (GES_IS_CLIP (clip), -1);
g_return_val_if_fail (GES_IS_BASE_EFFECT (effect), -1);
_get_priority_range (GES_CONTAINER (clip), &min_prio, &max_prio);
return GES_TIMELINE_ELEMENT_PRIORITY (effect) - min_prio +
GES_TIMELINE_ELEMENT_PRIORITY (clip);
}
/**
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* ges_clip_set_top_effect_priority:
* @clip: The origin #GESClip
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* @effect: The #GESBaseEffect to move
* @newpriority: the new position at which to move the @effect inside this
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* #GESClip
*
* 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_clip_set_top_effect_priority (GESClip * clip,
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GESBaseEffect * effect, guint newpriority)
{
gint inc;
GList *tmp;
guint current_prio;
GESTrackElement *track_element;
g_return_val_if_fail (GES_IS_CLIP (clip), FALSE);
track_element = GES_TRACK_ELEMENT (effect);
current_prio = _PRIORITY (track_element);
/* We don't change the priority */
if (current_prio == newpriority ||
(G_UNLIKELY (GES_CLIP (GES_TIMELINE_ELEMENT_PARENT (track_element)) !=
clip)))
return FALSE;
if (newpriority > (clip->priv->nb_effects - 1)) {
GST_DEBUG ("You are trying to make %p not a top effect", effect);
return FALSE;
}
if (current_prio > clip->priv->nb_effects) {
GST_DEBUG ("%p is not a top effect", effect);
return FALSE;
}
_ges_container_sort_children (GES_CONTAINER (clip));
if (_PRIORITY (track_element) < newpriority)
inc = -1;
else
inc = +1;
GST_DEBUG_OBJECT (clip, "Setting top effect %" GST_PTR_FORMAT "priority: %i",
effect, newpriority);
for (tmp = GES_CONTAINER_CHILDREN (clip); tmp; tmp = tmp->next) {
GESTrackElement *tmpo = GES_TRACK_ELEMENT (tmp->data);
guint tck_priority = _PRIORITY (tmpo);
if (tmpo == track_element)
continue;
if ((inc == +1 && tck_priority >= newpriority) ||
(inc == -1 && tck_priority <= newpriority)) {
_set_priority0 (GES_TIMELINE_ELEMENT (tmpo), tck_priority + inc);
}
}
_set_priority0 (GES_TIMELINE_ELEMENT (track_element), newpriority);
return TRUE;
}
/**
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* ges_clip_edit:
* @clip: the #GESClip to edit
* @layers: (element-type GESTimelineLayer): The layers you want the edit to
* happen in, %NULL means that the edition is done in all the
* #GESTimelineLayers contained in the current timeline.
* @new_layer_priority: The priority of the layer @clip should land in.
* If the layer you're trying to move the clip to doesn't exist, it will
* be created automatically. -1 means no move.
* @mode: The #GESEditMode in which the editition will happen.
* @edge: The #GESEdge the edit should happen on.
* @position: The position at which to edit @clip (in nanosecond)
*
* Edit @clip in the different exisiting #GESEditMode modes. In the case of
* slide, and roll, you need to specify a #GESEdge
*
* Returns: %TRUE if the clip as been edited properly, %FALSE if an error
* occured
*
* Since: 0.10.XX
*/
gboolean
ges_clip_edit (GESClip * clip, GList * layers,
gint new_layer_priority, GESEditMode mode, GESEdge edge, guint64 position)
{
GList *tmp;
gboolean ret = TRUE;
GESTimelineLayer *layer;
g_return_val_if_fail (GES_IS_CLIP (clip), FALSE);
if (!G_UNLIKELY (GES_CONTAINER_CHILDREN (clip))) {
GST_WARNING_OBJECT (clip, "Trying to edit, but not containing"
"any TrackElement yet.");
return FALSE;
}
for (tmp = GES_CONTAINER_CHILDREN (clip); tmp; tmp = g_list_next (tmp)) {
if (ges_track_element_is_locked (tmp->data)
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&& GES_IS_SOURCE (tmp->data)) {
ret &= ges_track_element_edit (tmp->data, layers, mode, edge, position);
break;
}
}
/* Moving to layer */
if (new_layer_priority == -1) {
GST_DEBUG_OBJECT (clip, "Not moving new prio %d", new_layer_priority);
} else {
gint priority_offset;
layer = clip->priv->layer;
if (layer == NULL) {
GST_WARNING_OBJECT (clip, "Not in any layer yet, not moving");
return FALSE;
}
priority_offset = new_layer_priority -
ges_timeline_layer_get_priority (layer);
ret &= timeline_context_to_layer (layer->timeline, priority_offset);
}
return ret;
}
/**
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* ges_clip_split:
* @clip: the #GESClip to split
* @position: a #GstClockTime representing the position at which to split
*
* The function modifies @clip, and creates another #GESClip so
* we have two clips at the end, splitted at the time specified by @position.
* The newly created clip will be added to the same layer as @clip is in.
* This implies that @clip must be in a #GESTimelineLayer for the operation to
* be possible.
*
* Returns: (transfer none): The newly created #GESClip resulting from the
* splitting
*/
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GESClip *
ges_clip_split (GESClip * clip, guint64 position)
{
GList *tmp;
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GESClip *new_object;
GstClockTime start, inpoint, duration;
g_return_val_if_fail (GES_IS_CLIP (clip), NULL);
g_return_val_if_fail (clip->priv->layer, NULL);
g_return_val_if_fail (GST_CLOCK_TIME_IS_VALID (position), NULL);
duration = _DURATION (clip);
start = _START (clip);
inpoint = _INPOINT (clip);
if (position >= start + duration || position <= start) {
GST_WARNING_OBJECT (clip, "Can not split %" GST_TIME_FORMAT
" out of boundaries", GST_TIME_ARGS (position));
return NULL;
}
GST_DEBUG_OBJECT (clip, "Spliting at %" GST_TIME_FORMAT,
GST_TIME_ARGS (position));
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/* Create the new Clip */
new_object = GES_CLIP (ges_timeline_element_copy (GES_TIMELINE_ELEMENT (clip),
FALSE));
GST_DEBUG_OBJECT (new_object, "New 'splitted' clip");
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/* Set new timing properties on the Clip */
_set_start0 (GES_TIMELINE_ELEMENT (new_object), position);
_set_inpoint0 (GES_TIMELINE_ELEMENT (new_object),
_INPOINT (clip) + duration - (duration + start - position));
_set_duration0 (GES_TIMELINE_ELEMENT (new_object),
duration + start - position);
/* We do not want the timeline to create again TrackElement-s */
ges_clip_set_moving_from_layer (new_object, TRUE);
ges_timeline_layer_add_clip (clip->priv->layer, new_object);
ges_clip_set_moving_from_layer (new_object, FALSE);
/* We first set the new duration and the child mapping will be updated
* properly in the following loop
* FIXME: Avoid setting it oureself reworking the API */
GES_TIMELINE_ELEMENT (clip)->duration = position - _START (clip);
for (tmp = GES_CONTAINER_CHILDREN (clip); tmp; tmp = tmp->next) {
GESTrackElement *new_trackelement, *trackelement =
GES_TRACK_ELEMENT (tmp->data);
duration = _DURATION (trackelement);
start = _START (trackelement);
inpoint = _INPOINT (trackelement);
if (position <= start || position >= (start + duration)) {
GST_DEBUG_OBJECT (trackelement,
"Outside %" GST_TIME_FORMAT "the boundaries "
"not copying it ( start %" GST_TIME_FORMAT ", end %" GST_TIME_FORMAT
")", GST_TIME_ARGS (position), GST_TIME_ARGS (_START (trackelement)),
GST_TIME_ARGS (_START (trackelement) + _DURATION (trackelement)));
continue;
}
new_trackelement =
GES_TRACK_ELEMENT (ges_timeline_element_copy (GES_TIMELINE_ELEMENT
(trackelement), TRUE));
if (new_trackelement == NULL) {
GST_WARNING_OBJECT (trackelement, "Could not create a copy");
continue;
}
/* Set 'new' track element timing propeties */
_set_start0 (GES_TIMELINE_ELEMENT (new_trackelement), position);
_set_inpoint0 (GES_TIMELINE_ELEMENT (new_trackelement),
inpoint + duration - (duration + start - position));
_set_duration0 (GES_TIMELINE_ELEMENT (new_trackelement),
duration + start - position);
/* Set 'old' track element duration */
_set_duration0 (GES_TIMELINE_ELEMENT (trackelement), position - start);
ges_container_add (GES_CONTAINER (new_object),
GES_TIMELINE_ELEMENT (new_trackelement));
}
return new_object;
}
/**
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* ges_clip_set_supported_formats:
* @clip: the #GESClip to set supported formats on
* @supportedformats: the #GESTrackType defining formats supported by @clip
*
* Sets the formats supported by the file.
*
* Since: 0.10.XX
*/
void
ges_clip_set_supported_formats (GESClip * clip, GESTrackType supportedformats)
{
g_return_if_fail (GES_IS_CLIP (clip));
clip->priv->supportedformats = supportedformats;
}
/**
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* ges_clip_get_supported_formats:
* @clip: the #GESClip
*
* Get the formats supported by @clip.
*
* Returns: The formats supported by @clip.
*
* Since: 0.10.XX
*/
GESTrackType
ges_clip_get_supported_formats (GESClip * clip)
{
g_return_val_if_fail (GES_IS_CLIP (clip), GES_TRACK_TYPE_UNKNOWN);
return clip->priv->supportedformats;
}
gboolean
_ripple (GESTimelineElement * element, GstClockTime start)
{
GList *tmp;
gboolean ret = TRUE;
GESTimeline *timeline;
GESClip *clip = GES_CLIP (element);
timeline = ges_timeline_layer_get_timeline (clip->priv->layer);
if (timeline == NULL) {
GST_DEBUG ("Not in a timeline yet");
return FALSE;
}
for (tmp = GES_CONTAINER_CHILDREN (element); tmp; tmp = g_list_next (tmp)) {
if (ges_track_element_is_locked (tmp->data)) {
ret = timeline_ripple_object (timeline, GES_TRACK_ELEMENT (tmp->data),
NULL, GES_EDGE_NONE, start);
/* As we work only with locked objects, the changes will be reflected
* to others controlled TrackElements */
break;
}
}
return ret;
}
static gboolean
_ripple_end (GESTimelineElement * element, GstClockTime end)
{
GList *tmp;
gboolean ret = TRUE;
GESTimeline *timeline;
GESClip *clip = GES_CLIP (element);
timeline = ges_timeline_layer_get_timeline (clip->priv->layer);
if (timeline == NULL) {
GST_DEBUG ("Not in a timeline yet");
return FALSE;
}
for (tmp = GES_CONTAINER_CHILDREN (element); tmp; tmp = g_list_next (tmp)) {
if (ges_track_element_is_locked (tmp->data)) {
ret = timeline_ripple_object (timeline, GES_TRACK_ELEMENT (tmp->data),
NULL, GES_EDGE_END, end);
/* As we work only with locked objects, the changes will be reflected
* to others controlled TrackElements */
break;
}
}
return ret;
}
gboolean
_roll_start (GESTimelineElement * element, GstClockTime start)
{
GList *tmp;
gboolean ret = TRUE;
GESTimeline *timeline;
GESClip *clip = GES_CLIP (element);
timeline = ges_timeline_layer_get_timeline (clip->priv->layer);
if (timeline == NULL) {
GST_DEBUG ("Not in a timeline yet");
return FALSE;
}
for (tmp = GES_CONTAINER_CHILDREN (element); tmp; tmp = g_list_next (tmp)) {
if (ges_track_element_is_locked (tmp->data)) {
ret = timeline_roll_object (timeline, GES_TRACK_ELEMENT (tmp->data),
NULL, GES_EDGE_START, start);
/* As we work only with locked objects, the changes will be reflected
* to others controlled TrackElements */
break;
}
}
return ret;
}
gboolean
_roll_end (GESTimelineElement * element, GstClockTime end)
{
GList *tmp;
gboolean ret = TRUE;
GESTimeline *timeline;
GESClip *clip = GES_CLIP (element);
timeline = ges_timeline_layer_get_timeline (clip->priv->layer);
if (timeline == NULL) {
GST_DEBUG ("Not in a timeline yet");
return FALSE;
}
for (tmp = GES_CONTAINER_CHILDREN (element); tmp; tmp = g_list_next (tmp)) {
if (ges_track_element_is_locked (tmp->data)) {
ret = timeline_roll_object (timeline, GES_TRACK_ELEMENT (tmp->data),
NULL, GES_EDGE_END, end);
/* As we work only with locked objects, the changes will be reflected
* to others controlled TrackElements */
break;
}
}
return ret;
}
gboolean
_trim (GESTimelineElement * element, GstClockTime start)
{
GList *tmp;
gboolean ret = TRUE;
GESTimeline *timeline;
GESClip *clip = GES_CLIP (element);
timeline = ges_timeline_layer_get_timeline (clip->priv->layer);
if (timeline == NULL) {
GST_DEBUG ("Not in a timeline yet");
return FALSE;
}
for (tmp = GES_CONTAINER_CHILDREN (element); tmp; tmp = g_list_next (tmp)) {
if (ges_track_element_is_locked (tmp->data)) {
ret = timeline_trim_object (timeline, GES_TRACK_ELEMENT (tmp->data),
NULL, GES_EDGE_START, start);
break;
}
}
return ret;
}
/**
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* ges_clip_add_asset:
* @clip: a #GESClip
* @asset: a #GESAsset with #GES_TYPE_TRACK_ELEMENT as extractable_type
*
* Extracts a #GESTrackElement from @asset and adds it to the @clip.
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* Should only be called in order to add operations to a #GESClip,
* ni other cases TrackElement are added automatically when adding the
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* #GESClip/#GESAsset to a layer.
*
* Takes a reference on @track_element.
*
* Returns: %TRUE on success, %FALSE on failure.
*/
gboolean
ges_clip_add_asset (GESClip * clip, GESAsset * asset)
{
g_return_val_if_fail (GES_IS_CLIP (clip), FALSE);
g_return_val_if_fail (GES_IS_ASSET (asset), FALSE);
g_return_val_if_fail (g_type_is_a (ges_asset_get_extractable_type
(asset), GES_TYPE_TRACK_ELEMENT), FALSE);
return ges_container_add (GES_CONTAINER (clip),
GES_TIMELINE_ELEMENT (ges_asset_extract (asset, NULL)));
}