mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-07-02 04:35:55 +00:00
269c2d1dc0
The way a clip's track elements are added to tracks was re-handled. This doesn't affect the normal usage of a simple audio-video timeline, where the tracks are added before any clips, but usage for multi-track timelines has improved. The main changes are: + We can now handle a track being selected for more than one track, including a full copy of their children properties and bindings. (Previously broken.) + When a clip is split, we copy the new elements directly into the same track, avoiding select-tracks-for-object. + When a clip is grouped or ungrouped, we avoid moving the elements to or from tracks. + Added API to allow users to copy the core elements of a clip directly into a track, complementing select-tracks-for-object. + Enforced the rule that a clip can only contain one core child in a track, and all the non-core children must be added to tracks that already contains a core child. This extends the previous condition that two sources from the same clip should not be added to the same track. + Made ges_track_add_element check that the newly added track element does not break the configuration rules of the timeline. + When adding a track to a timeline, we only use select-tracks-for-object to check whether track elements should be added to the new track, not existing ones. + When removing a track from a timeline, we empty it of all the track elements that are controlled by a clip. Thus, we ensure that a clip only contains elements that are in the tracks of the same timeline, or no track. Similarly, when removing a clip from a timeline. + We can now avoid unsupported timeline configurations when a layer is added to a timeline, and already contains clips. + We can now avoid unsupported timeline configurations when a track is added to a timeline, and the timeline already contains clips. Fixes https://gitlab.freedesktop.org/gstreamer/gst-editing-services/-/issues/84
197 lines
7 KiB
C
197 lines
7 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., 51 Franklin St, Fifth Floor,
|
|
* Boston, MA 02110-1301, USA.
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include <glib-object.h>
|
|
#include <gst/gst.h>
|
|
#include <ges/ges-timeline-element.h>
|
|
#include <ges/ges-container.h>
|
|
#include <ges/ges-types.h>
|
|
#include <ges/ges-track.h>
|
|
|
|
G_BEGIN_DECLS
|
|
|
|
#define GES_TYPE_CLIP ges_clip_get_type()
|
|
GES_DECLARE_TYPE(Clip, clip, CLIP);
|
|
|
|
/**
|
|
* GES_CLIP_CLASS_CAN_ADD_EFFECTS:
|
|
* @klass: A #GESClipClass
|
|
*
|
|
* Whether the class allows for the user to add additional non-core
|
|
* #GESBaseEffect-s to clips from this class.
|
|
*/
|
|
#define GES_CLIP_CLASS_CAN_ADD_EFFECTS(klass) ((GES_CLIP_CLASS (klass))->ABI.abi.can_add_effects)
|
|
|
|
/**
|
|
* GESFillTrackElementFunc:
|
|
* @clip: The #GESClip controlling the track elements
|
|
* @track_element: The #GESTrackElement
|
|
* @nleobj: The nleobject that needs to be filled
|
|
*
|
|
* A function that will be called when the nleobject of a corresponding
|
|
* track element needs to be filled.
|
|
*
|
|
* The implementer of this function shall add the proper #GstElement to @nleobj
|
|
* using gst_bin_add().
|
|
*
|
|
* Deprecated: 1.18: This method type is no longer used.
|
|
*
|
|
* Returns: %TRUE if the implementer successfully filled the @nleobj.
|
|
*/
|
|
typedef gboolean (*GESFillTrackElementFunc) (GESClip *clip, GESTrackElement *track_element,
|
|
GstElement *nleobj);
|
|
|
|
/**
|
|
* GESCreateTrackElementFunc:
|
|
* @clip: A #GESClip
|
|
* @type: A #GESTrackType to create a #GESTrackElement for
|
|
*
|
|
* A method for creating the core #GESTrackElement of a clip, to be added
|
|
* to a #GESTrack of the given track type.
|
|
*
|
|
* If a clip may produce several track elements per track type,
|
|
* #GESCreateTrackElementsFunc is more appropriate.
|
|
*
|
|
* Returns: (transfer floating) (nullable): The #GESTrackElement created
|
|
* by @clip, or %NULL if @clip can not provide a track element for the
|
|
* given @type or an error occurred.
|
|
*/
|
|
typedef GESTrackElement *(*GESCreateTrackElementFunc) (GESClip * clip, GESTrackType type);
|
|
|
|
/**
|
|
* GESCreateTrackElementsFunc:
|
|
* @clip: A #GESClip
|
|
* @type: A #GESTrackType to create #GESTrackElement-s for
|
|
*
|
|
* A method for creating the core #GESTrackElement-s of a clip, to be
|
|
* added to #GESTrack-s of the given track type.
|
|
*
|
|
* Returns: (transfer container) (element-type GESTrackElement): A list of
|
|
* the #GESTrackElement-s created by @clip for the given @type, or %NULL
|
|
* if no track elements are created or an error occurred.
|
|
*/
|
|
typedef GList * (*GESCreateTrackElementsFunc) (GESClip * clip, GESTrackType type);
|
|
|
|
/**
|
|
* GESClip:
|
|
*/
|
|
struct _GESClip
|
|
{
|
|
GESContainer parent;
|
|
|
|
/*< private >*/
|
|
GESClipPrivate *priv;
|
|
|
|
/* Padding for API extension */
|
|
gpointer _ges_reserved[GES_PADDING_LARGE];
|
|
};
|
|
|
|
/**
|
|
* GESClipClass:
|
|
* @create_track_element: Method to create the core #GESTrackElement of
|
|
* a clip of this class. If a clip of this class may create several track
|
|
* elements per track type, this should be left as %NULL, and
|
|
* create_track_elements() should be used instead. Otherwise, you should
|
|
* implement this class method and leave create_track_elements() as the
|
|
* default implementation
|
|
* @create_track_elements: Method to create the (multiple) core
|
|
* #GESTrackElement-s of a clip of this class. If create_track_element()
|
|
* is implemented, this should be kept as the default implementation
|
|
* @can_add_effects: Whether the user can add additional non-core
|
|
* #GESBaseEffect-s to clips from this class, to be applied to the output
|
|
* data of the core elements.
|
|
*/
|
|
struct _GESClipClass
|
|
{
|
|
/*< private > */
|
|
GESContainerClass parent_class;
|
|
|
|
/*< public > */
|
|
GESCreateTrackElementFunc create_track_element;
|
|
GESCreateTrackElementsFunc create_track_elements;
|
|
|
|
/*< private >*/
|
|
/* Padding for API extension */
|
|
union {
|
|
gpointer _ges_reserved[GES_PADDING_LARGE];
|
|
struct {
|
|
gboolean can_add_effects;
|
|
} abi;
|
|
} ABI;
|
|
};
|
|
|
|
/****************************************************
|
|
* TrackElement handling *
|
|
****************************************************/
|
|
GES_API
|
|
GESTrackType ges_clip_get_supported_formats (GESClip *clip);
|
|
GES_API
|
|
void ges_clip_set_supported_formats (GESClip *clip, GESTrackType supportedformats);
|
|
GES_API
|
|
GESTrackElement* ges_clip_add_asset (GESClip *clip, GESAsset *asset);
|
|
GES_API
|
|
GESTrackElement* ges_clip_find_track_element (GESClip *clip, GESTrack *track,
|
|
GType type);
|
|
GES_API
|
|
GList * ges_clip_find_track_elements (GESClip * clip, GESTrack * track,
|
|
GESTrackType track_type, GType type);
|
|
|
|
GES_API
|
|
GESTrackElement * ges_clip_add_child_to_track (GESClip * clip, GESTrackElement * child, GESTrack * track, GError **err);
|
|
|
|
/****************************************************
|
|
* Layer *
|
|
****************************************************/
|
|
GES_API
|
|
GESLayer* ges_clip_get_layer (GESClip *clip);
|
|
GES_API
|
|
gboolean ges_clip_move_to_layer (GESClip *clip, GESLayer *layer);
|
|
|
|
/****************************************************
|
|
* Effects *
|
|
****************************************************/
|
|
GES_API
|
|
GList* ges_clip_get_top_effects (GESClip *clip);
|
|
GES_API
|
|
gint ges_clip_get_top_effect_position (GESClip *clip, GESBaseEffect *effect);
|
|
GES_API
|
|
gint ges_clip_get_top_effect_index (GESClip *clip, GESBaseEffect *effect);
|
|
GES_API
|
|
gboolean ges_clip_set_top_effect_priority (GESClip *clip, GESBaseEffect *effect,
|
|
guint newpriority);
|
|
GES_API
|
|
gboolean ges_clip_set_top_effect_index (GESClip *clip, GESBaseEffect *effect,
|
|
guint newindex);
|
|
|
|
/****************************************************
|
|
* Editing *
|
|
****************************************************/
|
|
GES_API
|
|
GESClip* ges_clip_split (GESClip *clip, guint64 position);
|
|
|
|
GES_API
|
|
GstClockTime ges_clip_get_timeline_time_from_source_frame (GESClip * clip,
|
|
GESFrameNumber frame_number,
|
|
GError ** err);
|
|
|
|
G_END_DECLS
|