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/* This file is part of GEGL
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*
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* GEGL is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 3 of the License, or (at your option) any later version.
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*
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* GEGL 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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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with GEGL; if not, see <http://www.gnu.org/licenses/>.
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*
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* Copyright 2008 Øyvind Kolås
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*/
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/* GeglOperationTemporal
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* Base class for operations that want access to previous frames in a video sequence,
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* it contains API to configure the amounts of frames to store as well as getting a
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* GeglBuffer pointing to any of the previously stored frames.
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*/
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#ifndef __GEGL_OPERATION_TEMPORAL_H__
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#define __GEGL_OPERATION_TEMPORAL_H__
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#include "gegl-operation-filter.h"
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G_BEGIN_DECLS
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#define GEGL_TYPE_OPERATION_TEMPORAL (gegl_operation_temporal_get_type ())
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#define GEGL_OPERATION_TEMPORAL(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GEGL_TYPE_OPERATION_TEMPORAL, GeglOperationTemporal))
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#define GEGL_OPERATION_TEMPORAL_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GEGL_TYPE_OPERATION_TEMPORAL, GeglOperationTemporalClass))
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#define GEGL_IS_OPERATION_TEMPORAL(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GEGL_TYPE_OPERATION_TEMPORAL))
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#define GEGL_IS_OPERATION_TEMPORAL_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GEGL_TYPE_OPERATION_TEMPORAL))
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#define GEGL_OPERATION_TEMPORAL_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GEGL_TYPE_OPERATION_TEMPORAL, GeglOperationTemporalClass))
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typedef struct _GeglOperationTemporal GeglOperationTemporal;
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typedef struct _GeglOperationTemporalPrivate GeglOperationTemporalPrivate;
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struct _GeglOperationTemporal
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{
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GeglOperationFilter parent_instance;
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GeglOperationTemporalPrivate *priv;
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};
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typedef struct _GeglOperationTemporalClass GeglOperationTemporalClass;
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struct _GeglOperationTemporalClass
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{
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GeglOperationFilterClass parent_class;
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gboolean (* process) (GeglOperation *self,
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GeglBuffer *input,
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GeglBuffer *output,
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const GeglRectangle *roi,
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gint level);
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gpointer pad[4];
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};
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GType gegl_operation_temporal_get_type (void) G_GNUC_CONST;
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void gegl_operation_temporal_set_history_length (GeglOperation *op,
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gint history_length);
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guint gegl_operation_temporal_get_history_length (GeglOperation *op);
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/* you need to unref the buffer when you're done with it */
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GeglBuffer *gegl_operation_temporal_get_frame (GeglOperation *op,
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gint frame);
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G_END_DECLS
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#endif
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