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The duration-limit is the maximum duration that can be set for the clip given its current children and their properties. If a change in the children properties causes this to drop below the current duration, it is automatically capped by this limit. Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-editing-services/-/merge_requests/169>
199 lines
7 KiB
C
199 lines
7 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., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#pragma once
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#include <glib-object.h>
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#include <gst/gst.h>
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#include <ges/ges-timeline-element.h>
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#include <ges/ges-container.h>
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#include <ges/ges-types.h>
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#include <ges/ges-track.h>
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G_BEGIN_DECLS
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#define GES_TYPE_CLIP ges_clip_get_type()
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GES_DECLARE_TYPE(Clip, clip, CLIP);
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/**
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* GES_CLIP_CLASS_CAN_ADD_EFFECTS:
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* @klass: A #GESClipClass
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*
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* Whether the class allows for the user to add additional non-core
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* #GESBaseEffect-s to clips from this class.
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*/
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#define GES_CLIP_CLASS_CAN_ADD_EFFECTS(klass) ((GES_CLIP_CLASS (klass))->ABI.abi.can_add_effects)
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/**
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* GESFillTrackElementFunc:
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* @clip: The #GESClip controlling the track elements
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* @track_element: The #GESTrackElement
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* @nleobj: The nleobject that needs to be filled
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*
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* A function that will be called when the nleobject of a corresponding
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* track element needs to be filled.
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*
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* The implementer of this function shall add the proper #GstElement to @nleobj
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* using gst_bin_add().
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*
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* Deprecated: 1.18: This method type is no longer used.
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*
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* Returns: %TRUE if the implementer successfully filled the @nleobj.
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*/
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typedef gboolean (*GESFillTrackElementFunc) (GESClip *clip, GESTrackElement *track_element,
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GstElement *nleobj);
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/**
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* GESCreateTrackElementFunc:
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* @clip: A #GESClip
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* @type: A #GESTrackType to create a #GESTrackElement for
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*
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* A method for creating the core #GESTrackElement of a clip, to be added
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* to a #GESTrack of the given track type.
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*
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* If a clip may produce several track elements per track type,
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* #GESCreateTrackElementsFunc is more appropriate.
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*
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* Returns: (transfer floating) (nullable): The #GESTrackElement created
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* by @clip, or %NULL if @clip can not provide a track element for the
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* given @type or an error occurred.
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*/
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typedef GESTrackElement *(*GESCreateTrackElementFunc) (GESClip * clip, GESTrackType type);
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/**
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* GESCreateTrackElementsFunc:
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* @clip: A #GESClip
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* @type: A #GESTrackType to create #GESTrackElement-s for
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*
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* A method for creating the core #GESTrackElement-s of a clip, to be
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* added to #GESTrack-s of the given track type.
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*
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* Returns: (transfer container) (element-type GESTrackElement): A list of
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* the #GESTrackElement-s created by @clip for the given @type, or %NULL
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* if no track elements are created or an error occurred.
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*/
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typedef GList * (*GESCreateTrackElementsFunc) (GESClip * clip, GESTrackType type);
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/**
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* GESClip:
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*/
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struct _GESClip
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{
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GESContainer parent;
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/*< private >*/
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GESClipPrivate *priv;
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/* Padding for API extension */
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gpointer _ges_reserved[GES_PADDING_LARGE];
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};
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/**
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* GESClipClass:
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* @create_track_element: Method to create the core #GESTrackElement of
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* a clip of this class. If a clip of this class may create several track
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* elements per track type, this should be left as %NULL, and
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* create_track_elements() should be used instead. Otherwise, you should
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* implement this class method and leave create_track_elements() as the
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* default implementation
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* @create_track_elements: Method to create the (multiple) core
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* #GESTrackElement-s of a clip of this class. If create_track_element()
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* is implemented, this should be kept as the default implementation
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* @can_add_effects: Whether the user can add additional non-core
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* #GESBaseEffect-s to clips from this class, to be applied to the output
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* data of the core elements.
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*/
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struct _GESClipClass
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{
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/*< private > */
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GESContainerClass parent_class;
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/*< public > */
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GESCreateTrackElementFunc create_track_element;
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GESCreateTrackElementsFunc create_track_elements;
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/*< private >*/
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/* Padding for API extension */
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union {
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gpointer _ges_reserved[GES_PADDING_LARGE];
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struct {
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gboolean can_add_effects;
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} abi;
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} ABI;
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};
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/****************************************************
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* TrackElement handling *
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****************************************************/
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GES_API
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GESTrackType ges_clip_get_supported_formats (GESClip *clip);
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GES_API
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void ges_clip_set_supported_formats (GESClip *clip, GESTrackType supportedformats);
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GES_API
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GESTrackElement* ges_clip_add_asset (GESClip *clip, GESAsset *asset);
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GES_API
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GESTrackElement* ges_clip_find_track_element (GESClip *clip, GESTrack *track,
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GType type);
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GES_API
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GList * ges_clip_find_track_elements (GESClip * clip, GESTrack * track,
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GESTrackType track_type, GType type);
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GES_API
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GESTrackElement * ges_clip_add_child_to_track (GESClip * clip, GESTrackElement * child, GESTrack * track, GError **err);
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/****************************************************
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* Layer *
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****************************************************/
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GES_API
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GESLayer* ges_clip_get_layer (GESClip *clip);
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GES_API
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gboolean ges_clip_move_to_layer (GESClip *clip, GESLayer *layer);
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/****************************************************
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* Effects *
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****************************************************/
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GES_API
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GList* ges_clip_get_top_effects (GESClip *clip);
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GES_API
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gint ges_clip_get_top_effect_position (GESClip *clip, GESBaseEffect *effect);
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GES_API
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gint ges_clip_get_top_effect_index (GESClip *clip, GESBaseEffect *effect);
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GES_API
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gboolean ges_clip_set_top_effect_priority (GESClip *clip, GESBaseEffect *effect,
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guint newpriority);
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GES_API
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gboolean ges_clip_set_top_effect_index (GESClip *clip, GESBaseEffect *effect,
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guint newindex);
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/****************************************************
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* Editing *
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****************************************************/
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GES_API
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GESClip* ges_clip_split (GESClip *clip, guint64 position);
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GES_API
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GstClockTime ges_clip_get_timeline_time_from_source_frame (GESClip * clip,
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GESFrameNumber frame_number,
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GError ** err);
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GES_API
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GstClockTime ges_clip_get_duration_limit (GESClip * clip);
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G_END_DECLS
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