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244 lines
6.9 KiB
244 lines
6.9 KiB
/*
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* mlt_parser.c -- service parsing functionality
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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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#include "config.h"
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#include "mlt.h"
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#include <stdlib.h>
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static int on_invalid( mlt_parser this, mlt_service object )
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{
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return 0;
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}
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static int on_unknown( mlt_parser this, mlt_service object )
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{
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return 0;
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}
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static int on_start_producer( mlt_parser this, mlt_producer object )
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{
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return 0;
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}
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static int on_end_producer( mlt_parser this, mlt_producer object )
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{
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return 0;
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}
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static int on_start_playlist( mlt_parser this, mlt_playlist object )
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{
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return 0;
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}
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static int on_end_playlist( mlt_parser this, mlt_playlist object )
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{
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return 0;
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}
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static int on_start_tractor( mlt_parser this, mlt_tractor object )
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{
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return 0;
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}
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static int on_end_tractor( mlt_parser this, mlt_tractor object )
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{
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return 0;
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}
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static int on_start_multitrack( mlt_parser this, mlt_multitrack object )
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{
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return 0;
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}
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static int on_end_multitrack( mlt_parser this, mlt_multitrack object )
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{
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return 0;
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}
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static int on_start_track( mlt_parser this )
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{
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return 0;
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}
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static int on_end_track( mlt_parser this )
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{
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return 0;
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}
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static int on_start_filter( mlt_parser this, mlt_filter object )
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{
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return 0;
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}
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static int on_end_filter( mlt_parser this, mlt_filter object )
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{
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return 0;
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}
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static int on_start_transition( mlt_parser this, mlt_transition object )
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{
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return 0;
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}
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static int on_end_transition( mlt_parser this, mlt_transition object )
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{
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return 0;
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}
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mlt_parser mlt_parser_new( )
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{
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mlt_parser this = calloc( 1, sizeof( struct mlt_parser_s ) );
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if ( this != NULL && mlt_properties_init( &this->parent, this ) == 0 )
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{
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this->on_invalid = on_invalid;
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this->on_unknown = on_unknown;
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this->on_start_producer = on_start_producer;
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this->on_end_producer = on_end_producer;
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this->on_start_playlist = on_start_playlist;
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this->on_end_playlist = on_end_playlist;
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this->on_start_tractor = on_start_tractor;
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this->on_end_tractor = on_end_tractor;
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this->on_start_multitrack = on_start_multitrack;
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this->on_end_multitrack = on_end_multitrack;
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this->on_start_track = on_start_track;
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this->on_end_track = on_end_track;
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this->on_start_filter = on_start_filter;
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this->on_end_filter = on_end_filter;
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this->on_start_transition = on_start_transition;
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this->on_end_transition = on_end_transition;
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}
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return this;
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}
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mlt_properties mlt_parser_properties( mlt_parser this )
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{
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return &this->parent;
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}
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int mlt_parser_start( mlt_parser this, mlt_service object )
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{
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int error = 0;
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mlt_service_type type = mlt_service_identify( object );
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switch( type )
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{
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case invalid_type:
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error = this->on_invalid( this, object );
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break;
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case unknown_type:
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error = this->on_unknown( this, object );
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break;
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case producer_type:
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if ( mlt_producer_is_cut( ( mlt_producer )object ) )
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error = mlt_parser_start( this, ( mlt_service )mlt_producer_cut_parent( ( mlt_producer )object ) );
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error = this->on_start_producer( this, ( mlt_producer )object );
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if ( error == 0 )
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{
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int i = 0;
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while ( error == 0 && mlt_producer_filter( ( mlt_producer )object, i ) != NULL )
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error = mlt_parser_start( this, ( mlt_service )mlt_producer_filter( ( mlt_producer )object, i ++ ) );
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}
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error = this->on_end_producer( this, ( mlt_producer )object );
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break;
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case playlist_type:
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error = this->on_start_playlist( this, ( mlt_playlist )object );
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if ( error == 0 )
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{
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int i = 0;
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while ( error == 0 && i < mlt_playlist_count( ( mlt_playlist )object ) )
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mlt_parser_start( this, ( mlt_service )mlt_playlist_get_clip( ( mlt_playlist )object, i ++ ) );
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i = 0;
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while ( error == 0 && mlt_producer_filter( ( mlt_producer )object, i ) != NULL )
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error = mlt_parser_start( this, ( mlt_service )mlt_producer_filter( ( mlt_producer )object, i ++ ) );
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}
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error = this->on_end_playlist( this, ( mlt_playlist )object );
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break;
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case tractor_type:
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error = this->on_start_tractor( this, ( mlt_tractor )object );
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if ( error == 0 )
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{
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int i = 0;
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mlt_service next = mlt_service_producer( object );
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mlt_parser_start( this, ( mlt_service )mlt_tractor_multitrack( ( mlt_tractor )object ) );
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while ( next != ( mlt_service )mlt_tractor_multitrack( ( mlt_tractor )object ) )
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{
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mlt_parser_start( this, next );
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next = mlt_service_producer( next );
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}
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while ( error == 0 && mlt_producer_filter( ( mlt_producer )object, i ) != NULL )
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error = mlt_parser_start( this, ( mlt_service )mlt_producer_filter( ( mlt_producer )object, i ++ ) );
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}
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error = this->on_end_tractor( this, ( mlt_tractor )object );
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break;
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case multitrack_type:
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error = this->on_start_multitrack( this, ( mlt_multitrack )object );
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if ( error == 0 )
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{
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int i = 0;
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while ( i < mlt_multitrack_count( ( mlt_multitrack )object ) )
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{
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this->on_start_track( this );
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mlt_parser_start( this, ( mlt_service )mlt_multitrack_track( ( mlt_multitrack )object , i ++ ) );
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this->on_end_track( this );
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}
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i = 0;
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while ( error == 0 && mlt_producer_filter( ( mlt_producer )object, i ) != NULL )
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error = mlt_parser_start( this, ( mlt_service )mlt_producer_filter( ( mlt_producer )object, i ++ ) );
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}
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error = this->on_end_multitrack( this, ( mlt_multitrack )object );
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break;
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case filter_type:
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error = this->on_start_filter( this, ( mlt_filter )object );
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if ( error == 0 )
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{
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int i = 0;
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while ( error == 0 && mlt_producer_filter( ( mlt_producer )object, i ) != NULL )
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error = mlt_parser_start( this, ( mlt_service )mlt_producer_filter( ( mlt_producer )object, i ++ ) );
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}
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error = this->on_end_filter( this, ( mlt_filter )object );
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break;
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case transition_type:
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error = this->on_start_transition( this, ( mlt_transition )object );
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if ( error == 0 )
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{
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int i = 0;
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while ( error == 0 && mlt_producer_filter( ( mlt_producer )object, i ) != NULL )
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error = mlt_parser_start( this, ( mlt_service )mlt_producer_filter( ( mlt_producer )object, i ++ ) );
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}
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error = this->on_end_transition( this, ( mlt_transition )object );
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break;
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case field_type:
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break;
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case consumer_type:
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break;
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}
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return error;
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}
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void mlt_parser_close( mlt_parser this )
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{
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if ( this != NULL )
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{
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mlt_properties_close( &this->parent );
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free( this );
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}
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}
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