/*
    Copyright (C) 2014-2021 Carl Hetherington <cth@carlh.net>

    This file is part of DCP-o-matic.

    DCP-o-matic 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.

    DCP-o-matic 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 DCP-o-matic.  If not, see <http://www.gnu.org/licenses/>.

*/


/** @file  test/audio_mapping_test.cc
 *  @brief Test AudioMapping class.
 *  @ingroup selfcontained
 */


#include <boost/test/unit_test.hpp>
#include "lib/audio_mapping.h"
#include "lib/util.h"


using std::list;
using std::string;
using boost::optional;


BOOST_AUTO_TEST_CASE (audio_mapping_test)
{
	AudioMapping none;
	BOOST_CHECK_EQUAL (none.input_channels(), 0);

	AudioMapping four (4, MAX_DCP_AUDIO_CHANNELS);
	BOOST_CHECK_EQUAL (four.input_channels(), 4);

	four.set (0, 1, 1);

	for (int i = 0; i < 4; ++i) {
		for (int j = 0; j < MAX_DCP_AUDIO_CHANNELS; ++j) {
			BOOST_CHECK_EQUAL (four.get(i, j), (i == 0 && j == 1) ? 1 : 0);
		}
	}

	auto mapped = four.mapped_output_channels ();
	BOOST_CHECK_EQUAL (mapped.size(), 1U);
	BOOST_CHECK_EQUAL (mapped.front(), 1);

	four.make_zero ();

	for (int i = 0; i < 4; ++i) {
		for (int j = 0; j < MAX_DCP_AUDIO_CHANNELS; ++j) {
			BOOST_CHECK_EQUAL (four.get (i, j), 0);
		}
	}
}


static void
guess_check (boost::filesystem::path filename, int output_channel)
{
	AudioMapping m (1, 8);
	m.make_default (0, filename);
	for (int i = 0; i < 8; ++i) {
		BOOST_TEST_INFO (filename);
		BOOST_CHECK_CLOSE (m.get(0, i), i == output_channel ? 1 : 0, 0.01);
	}
}


BOOST_AUTO_TEST_CASE (audio_mapping_guess_test)
{
	guess_check ("stuff_L_nonsense.wav", 0);
	guess_check ("stuff_nonsense.wav", 2);
	guess_check ("fred_R.wav", 1);
	guess_check ("jim_C_sheila.aiff", 2);
	guess_check ("things_Lfe_and.wav", 3);
	guess_check ("weeee_Ls.aiff", 4);
	guess_check ("try_Rs-it.wav", 5);

	/* PT-style */
	guess_check ("things_LFE.wav", 3);
	guess_check ("ptish_Lsr_abc.wav", 6);
	guess_check ("ptish_Rsr_abc.wav", 7);
	guess_check ("more_Lss_s.wav", 4);
	guess_check ("other_Rss.aiff", 5);
}