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5720ae4f25
Avoid loosing (too much) precision when rescaling back and forth by storing values in gdoubles. Handle the fact that position values can be negative Also fix debug category static variable as it clashes with the instance variable name in a few methods.
96 lines
2.7 KiB
C
96 lines
2.7 KiB
C
/* GStreamer
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* Copyright (C) 2013 Mathieu Duponchelle <mduponchelle1@gmail.com>
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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 _GST_FRAME_POSITIONNER_H_
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#define _GST_FRAME_POSITIONNER_H_
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#include <gst/base/gstbasetransform.h>
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#include <ges/ges-track-element.h>
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#include <ges/ges-track.h>
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G_BEGIN_DECLS
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#define GST_TYPE_FRAME_POSITIONNER (gst_frame_positioner_get_type())
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#define GST_FRAME_POSITIONNER(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_FRAME_POSITIONNER,GstFramePositioner))
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#define GST_FRAME_POSITIONNER_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_FRAME_POSITIONNER,GstFramePositionerClass))
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#define GST_IS_FRAME_POSITIONNER(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_FRAME_POSITIONNER))
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#define GST_IS_FRAME_POSITIONNER_CLASS(obj) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_FRAME_POSITIONNER))
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typedef struct _GstFramePositioner GstFramePositioner;
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typedef struct _GstFramePositionerClass GstFramePositionerClass;
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typedef struct _GstFramePositionerMeta GstFramePositionerMeta;
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struct _GstFramePositioner
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{
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GstBaseTransform base_framepositioner;
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GstElement *capsfilter;
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GESTrackElement *track_source;
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GESTrack *current_track;
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gboolean scale_in_compositor;
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gdouble alpha;
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gdouble posx;
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gdouble posy;
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guint zorder;
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gdouble width;
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gdouble height;
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gint natural_width;
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gint natural_height;
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gint track_width;
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gint track_height;
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gint fps_n;
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gint fps_d;
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gint par_n;
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gint par_d;
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gboolean user_positioned;
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/* This should never be made public, no padding needed */
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};
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struct _GstFramePositionerClass
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{
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GstBaseTransformClass base_framepositioner_class;
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};
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struct _GstFramePositionerMeta {
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GstMeta meta;
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gdouble alpha;
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gint posx;
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gint posy;
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gint height;
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gint width;
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guint zorder;
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};
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G_GNUC_INTERNAL void ges_frame_positioner_set_source_and_filter (GstFramePositioner *pos,
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GESTrackElement *trksrc,
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GstElement *capsfilter);
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G_GNUC_INTERNAL GType gst_frame_positioner_get_type (void);
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G_GNUC_INTERNAL GType
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gst_frame_positioner_meta_api_get_type (void);
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G_END_DECLS
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#endif
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