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71 lines
2.5 KiB
71 lines
2.5 KiB
/*
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* mlt_transition.h -- abstraction for all transition services
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* Copyright (C) 2003-2004 Ushodaya Enterprises Limited
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* Author: Charles Yates <charles.yates@pandora.be>
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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 Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 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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* 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 this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef _MLT_TRANSITION_H_
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#define _MLT_TRANSITION_H_
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#include "mlt_service.h"
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/** The interface definition for all transitions.
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*/
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struct mlt_transition_s
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{
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/* We're implementing service here */
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struct mlt_service_s parent;
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/* public virtual */
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void ( *close )( mlt_transition );
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/* protected transition method */
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mlt_frame ( *process )( mlt_transition, mlt_frame, mlt_frame );
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/* Protected */
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void *child;
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/* track and in/out points */
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mlt_service producer;
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/* Private */
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mlt_frame *frames;
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int held;
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};
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/** Public final methods
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*/
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#define MLT_TRANSITION_SERVICE( transition ) ( &( transition )->parent )
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#define MLT_TRANSITION_PROPERTIES( transition ) MLT_SERVICE_PROPERTIES( MLT_TRANSITION_SERVICE( transition ) )
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extern int mlt_transition_init( mlt_transition self, void *child );
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extern mlt_transition mlt_transition_new( );
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extern mlt_service mlt_transition_service( mlt_transition self );
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extern mlt_properties mlt_transition_properties( mlt_transition self );
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extern int mlt_transition_connect( mlt_transition self, mlt_service producer, int a_track, int b_track );
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extern void mlt_transition_set_in_and_out( mlt_transition self, mlt_position in, mlt_position out );
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extern int mlt_transition_get_a_track( mlt_transition self );
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extern int mlt_transition_get_b_track( mlt_transition self );
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extern mlt_position mlt_transition_get_in( mlt_transition self );
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extern mlt_position mlt_transition_get_out( mlt_transition self );
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extern mlt_frame mlt_transition_process( mlt_transition self, mlt_frame a_frame, mlt_frame b_frame );
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extern void mlt_transition_close( mlt_transition self );
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#endif
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