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7b3ac927dc
This way the user can easily know how the clip would look like if no scaling was applied to the clip, this is useful to be able to properly position the clips with the framepositionner element.
101 lines
2.9 KiB
C
101 lines
2.9 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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#ifndef _GES_VIDEO_SOURCE
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#define _GES_VIDEO_SOURCE
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#include <glib-object.h>
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#include <gst/gst.h>
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#include <ges/ges-types.h>
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#include <ges/ges-track-element.h>
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#include <ges/ges-source.h>
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G_BEGIN_DECLS
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#define GES_TYPE_VIDEO_SOURCE ges_video_source_get_type()
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#define GES_VIDEO_SOURCE(obj) \
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(G_TYPE_CHECK_INSTANCE_CAST ((obj), GES_TYPE_VIDEO_SOURCE, GESVideoSource))
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#define GES_VIDEO_SOURCE_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_CAST ((klass), GES_TYPE_VIDEO_SOURCE, GESVideoSourceClass))
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#define GES_IS_VIDEO_SOURCE(obj) \
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(G_TYPE_CHECK_INSTANCE_TYPE ((obj), GES_TYPE_VIDEO_SOURCE))
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#define GES_IS_VIDEO_SOURCE_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_TYPE ((klass), GES_TYPE_VIDEO_SOURCE))
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#define GES_VIDEO_SOURCE_GET_CLASS(obj) \
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(G_TYPE_INSTANCE_GET_CLASS ((obj), GES_TYPE_VIDEO_SOURCE, GESVideoSourceClass))
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typedef struct _GESVideoSourcePrivate GESVideoSourcePrivate;
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/**
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* GESVideoSource:
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*
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* Base class for video sources
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*/
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struct _GESVideoSource {
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/*< private >*/
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GESSource parent;
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GESVideoSourcePrivate *priv;
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/* Padding for API extension */
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gpointer _ges_reserved[GES_PADDING];
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};
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/**
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* GESVideoSourceClass:
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* @create_source: method to return the GstElement to put in the source topbin.
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* Other elements will be queued, like a videoscale.
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* In the case of a VideoUriSource, for example, the subclass will return a decodebin,
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* and we will append a videoscale.
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*/
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struct _GESVideoSourceClass {
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/*< private >*/
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GESSourceClass parent_class;
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/*< public >*/
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GstElement* (*create_source) (GESTrackElement * object);
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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];
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struct {
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gboolean disable_scale_in_compositor;
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gboolean (*needs_converters)(GESVideoSource *self);
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gboolean (*get_natural_size)(GESVideoSource* self, gint* width, gint* height);
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} abi;
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} ABI;
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};
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GES_API
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GType ges_video_source_get_type (void);
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GES_API
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gboolean ges_video_source_get_natural_size(GESVideoSource* self, gint* width, gint* height);
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G_END_DECLS
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#endif /* _GES_VIDEO_SOURCE */
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