/usr/include/mlt/framework/mlt_transition.h is in libmlt-dev 6.6.0-1build1.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 | /**
* \file mlt_transition.h
* \brief abstraction for all transition services
* \see mlt_transition_s
*
* Copyright (C) 2003-2015 Meltytech, LLC
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef MLT_TRANSITION_H
#define MLT_TRANSITION_H
#include "mlt_service.h"
/** \brief Transition abstract service class
*
* A transition may modify the output of a producer based on the output of a second producer.
*
* \extends mlt_service_s
* \properties \em a_track the track index (0-based) of a multitrack of the first producer
* \properties \em b_track the track index (0-based) of a multitrack of the second producer
* \properties \em accepts_blanks a flag to indicate if the transition should accept blank frames
* \properties \em always_active a flag to indicate that the in and out points do not apply
* \properties \em _transition_type 1 for video, 2 for audio, 3 for both audio and video
* \properties \em disable Set this to disable the transition while keeping it in the object model.
*/
struct mlt_transition_s
{
/** We're implementing service here */
struct mlt_service_s parent;
/** public virtual */
void ( *close )( mlt_transition );
/** protected transition method */
mlt_frame ( *process )( mlt_transition, mlt_frame, mlt_frame );
/** Protected */
void *child;
/** track and in/out points */
mlt_service producer;
/** Private */
mlt_frame *frames;
int held;
};
#define MLT_TRANSITION_SERVICE( transition ) ( &( transition )->parent )
#define MLT_TRANSITION_PROPERTIES( transition ) MLT_SERVICE_PROPERTIES( MLT_TRANSITION_SERVICE( transition ) )
extern int mlt_transition_init( mlt_transition self, void *child );
extern mlt_transition mlt_transition_new( );
extern mlt_service mlt_transition_service( mlt_transition self );
extern mlt_properties mlt_transition_properties( mlt_transition self );
extern int mlt_transition_connect( mlt_transition self, mlt_service producer, int a_track, int b_track );
extern void mlt_transition_set_in_and_out( mlt_transition self, mlt_position in, mlt_position out );
extern void mlt_transition_set_tracks( mlt_transition self, int a_track, int b_track );
extern int mlt_transition_get_a_track( mlt_transition self );
extern int mlt_transition_get_b_track( mlt_transition self );
extern mlt_position mlt_transition_get_in( mlt_transition self );
extern mlt_position mlt_transition_get_out( mlt_transition self );
extern mlt_position mlt_transition_get_length( mlt_transition self );
extern mlt_position mlt_transition_get_position( mlt_transition self, mlt_frame frame );
extern double mlt_transition_get_progress( mlt_transition self, mlt_frame frame );
extern double mlt_transition_get_progress_delta( mlt_transition self, mlt_frame frame );
extern mlt_frame mlt_transition_process( mlt_transition self, mlt_frame a_frame, mlt_frame b_frame );
extern void mlt_transition_close( mlt_transition self );
#endif
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