src/mlt%2B%2B/MltProducer.cpp

/**
 * MltProducer.cpp - MLT Wrapper
 * Copyright (C) 2004-2019 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
 */

#include "MltProducer.h"
#include "MltFilter.h"
#include "MltProfile.h"
#include "MltEvent.h"
#include "MltConsumer.h"
using namespace Mlt;

Producer::Producer( ) :
	instance( NULL ),
	parent_( NULL )
{
}

Producer::Producer( Profile& profile, const char *id, const char *service ) :
	Producer( profile.get_profile() , id, service )
{
}

Producer::Producer( mlt_profile profile, const char *id, const char *service ) :
	instance( NULL ),
	parent_( NULL )
{
	if ( id != NULL && service != NULL )
		instance = mlt_factory_producer( profile, id, service );
	else
		instance = mlt_factory_producer( profile, NULL, id != NULL ? id : service );
}

Producer::Producer( Service &producer ) :
	instance( NULL ),
	parent_( NULL )
{
	mlt_service_type type = producer.type( );
	if ( type == mlt_service_producer_type || type == mlt_service_playlist_type ||
		 type == mlt_service_tractor_type || type == mlt_service_multitrack_type ||
		 type == mlt_service_chain_type || type == mlt_service_link_type )
	{
		instance = ( mlt_producer )producer.get_service( );
		inc_ref( );
	}
}

Producer::Producer( mlt_producer producer ) :
	instance( producer ),
	parent_( NULL )
{
	inc_ref( );
}

Producer::Producer( Producer &producer ) :
	Mlt::Service( producer ),
	instance( producer.get_producer( ) ),
	parent_( NULL )
{
	inc_ref( );
}

Producer::Producer( const Producer &producer ) :
	Producer( const_cast<Producer&>(producer) )
{
}

Producer::Producer( Producer *producer ) :
	instance( producer != NULL ? producer->get_producer( ) : NULL ),
	parent_( NULL )
{
	if ( is_valid( ) )
		inc_ref( );
}

Producer::~Producer( )
{
	delete parent_;
	mlt_producer_close( instance );
	instance = NULL;
}

Producer &Producer::operator=(const Producer &producer)
{
	if (this != &producer)
	{
		delete parent_;
		parent_ = nullptr;
		mlt_producer_close( instance );
		instance = producer.instance;
		inc_ref( );
	}
	return *this;
}

mlt_producer Producer::get_producer( )
{
	return instance;
}

mlt_producer Producer::get_parent( )
{
	return get_producer( ) != NULL && mlt_producer_cut_parent( get_producer( ) ) != NULL ? mlt_producer_cut_parent( get_producer( ) ) : get_producer( );
}

Producer &Producer::parent( )
{
	if ( is_cut( ) && parent_ == NULL )
		parent_ = new Producer( get_parent( ) );
	return parent_ == NULL ? *this : *parent_;
}

mlt_service Producer::get_service( )
{
	return mlt_producer_service( get_producer( ) );
}

int Producer::seek( int position )
{
	return mlt_producer_seek( get_producer( ), position );
}

int Producer::seek( const char *time )
{
	return mlt_producer_seek_time( get_producer( ), time );
}

int Producer::position( )
{
	return mlt_producer_position( get_producer( ) );
}

int Producer::frame( )
{
	return mlt_producer_frame( get_producer( ) );
}

char* Producer::frame_time( mlt_time_format format )
{
	return mlt_producer_frame_time( get_producer(), format );
}

int Producer::set_speed( double speed )
{
	return mlt_producer_set_speed( get_producer( ), speed );
}

int Producer::pause()
{
	int result = 0;

	if ( get_speed() != 0 )
	{
		Consumer consumer( ( mlt_consumer ) mlt_service_consumer( get_service( ) ) );
		Event *event = consumer.setup_wait_for( "consumer-sdl-paused" );

		result = mlt_producer_set_speed( get_producer( ), 0 );
		if ( result == 0 && consumer.is_valid() && !consumer.is_stopped() )
			consumer.wait_for( event );
		delete event;
	}

	return result;
}

double Producer::get_speed( )
{
	return mlt_producer_get_speed( get_producer( ) );
}

double Producer::get_fps( )
{
	return mlt_producer_get_fps( get_producer( ) );
}

int Producer::set_in_and_out( int in, int out )
{
	return mlt_producer_set_in_and_out( get_producer( ), in, out );
}

int Producer::get_in( )
{
	return mlt_producer_get_in( get_producer( ) );
}

int Producer::get_out( )
{
	return mlt_producer_get_out( get_producer( ) );
}

int Producer::get_length( )
{
	return mlt_producer_get_length( get_producer( ) );
}

char* Producer::get_length_time( mlt_time_format format )
{
	return mlt_producer_get_length_time( get_producer( ), format );
}

int Producer::get_playtime( )
{
	return mlt_producer_get_playtime( get_producer( ) );
}

Producer *Producer::cut( int in, int out )
{
	mlt_producer producer = mlt_producer_cut( get_producer( ), in, out );
	Producer *result = new Producer( producer );
	mlt_producer_close( producer );
	return result;
}

bool Producer::is_cut( )
{
	return mlt_producer_is_cut( get_producer( ) ) != 0;
}

bool Producer::is_blank( )
{
	return mlt_producer_is_blank( get_producer( ) ) != 0;
}

bool Producer::same_clip( Producer &that )
{
	return mlt_producer_cut_parent( get_producer( ) ) == mlt_producer_cut_parent( that.get_producer( ) );
}

bool Producer::runs_into( Producer &that )
{
	return same_clip( that ) && get_out( ) == ( that.get_in( ) - 1 );
}

void Producer::optimise( )
{
	mlt_producer_optimise( get_producer( ) );
}

int Producer::clear( )
{
	return mlt_producer_clear( get_producer( ) );
}

int64_t Producer::get_creation_time( )
{
	return mlt_producer_get_creation_time( get_producer( ) );
}

void Producer::set_creation_time( int64_t creation_time )
{
	mlt_producer_set_creation_time( get_producer( ), creation_time );
}