/* * Copyright (C) 2003-2014 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 "config.h" #include "test_pcm_all.hxx" #include "test_pcm_util.hxx" #include "pcm/PcmChannels.hxx" #include "pcm/PcmBuffer.hxx" #include "util/ConstBuffer.hxx" void PcmChannelsTest::TestChannels16() { constexpr size_t N = 256; const auto src = TestDataBuffer<int16_t, N * 2>(); PcmBuffer buffer; /* stereo to mono */ auto dest = pcm_convert_channels_16(buffer, 1, 2, { src, N * 2 }); CPPUNIT_ASSERT(!dest.IsNull()); CPPUNIT_ASSERT_EQUAL(N, dest.size); for (unsigned i = 0; i < N; ++i) CPPUNIT_ASSERT_EQUAL(int16_t((src[i * 2] + src[i * 2 + 1]) / 2), dest.data[i]); /* mono to stereo */ dest = pcm_convert_channels_16(buffer, 2, 1, { src, N * 2 }); CPPUNIT_ASSERT(!dest.IsNull()); CPPUNIT_ASSERT_EQUAL(N * 4, dest.size); for (unsigned i = 0; i < N; ++i) { CPPUNIT_ASSERT_EQUAL(src[i], dest.data[i * 2]); CPPUNIT_ASSERT_EQUAL(src[i], dest.data[i * 2 + 1]); } } void PcmChannelsTest::TestChannels32() { constexpr size_t N = 256; const auto src = TestDataBuffer<int32_t, N * 2>(); PcmBuffer buffer; /* stereo to mono */ auto dest = pcm_convert_channels_32(buffer, 1, 2, { src, N * 2 }); CPPUNIT_ASSERT(!dest.IsNull()); CPPUNIT_ASSERT_EQUAL(N, dest.size); for (unsigned i = 0; i < N; ++i) CPPUNIT_ASSERT_EQUAL(int32_t(((int64_t)src[i * 2] + (int64_t)src[i * 2 + 1]) / 2), dest.data[i]); /* mono to stereo */ dest = pcm_convert_channels_32(buffer, 2, 1, { src, N * 2 }); CPPUNIT_ASSERT(!dest.IsNull()); CPPUNIT_ASSERT_EQUAL(N * 4, dest.size); for (unsigned i = 0; i < N; ++i) { CPPUNIT_ASSERT_EQUAL(src[i], dest.data[i * 2]); CPPUNIT_ASSERT_EQUAL(src[i], dest.data[i * 2 + 1]); } }