TwoFilters.cxx

/*
 * Copyright 2003-2021 The Music Player Daemon Project
 * http://www.musicpd.org
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */

#include "TwoFilters.hxx"
#include "util/ConstBuffer.hxx"

ConstBuffer<void>
TwoFilters::FilterPCM(ConstBuffer<void> src)
{
	return second->FilterPCM(first->FilterPCM(src));
}

ConstBuffer<void>
TwoFilters::Flush()
{
	auto result = first->Flush();
	if (!result.IsNull())
		/* Flush() output from the first Filter must be
		   filtered by the second Filter */
		return second->FilterPCM(result);

	return second->Flush();
}