82 lines
2.4 KiB
C++
82 lines
2.4 KiB
C++
/*
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* Copyright (C) 2003-2014 The Music Player Daemon Project
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* http://www.musicpd.org
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program 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
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 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 "test_pcm_all.hxx"
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#include "test_pcm_util.hxx"
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#include "pcm/PcmChannels.hxx"
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#include "pcm/PcmBuffer.hxx"
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#include "util/ConstBuffer.hxx"
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void
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PcmChannelsTest::TestChannels16()
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{
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constexpr size_t N = 256;
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const auto src = TestDataBuffer<int16_t, N * 2>();
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PcmBuffer buffer;
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/* stereo to mono */
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auto dest = pcm_convert_channels_16(buffer, 1, 2, { src, N * 2 });
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CPPUNIT_ASSERT(!dest.IsNull());
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CPPUNIT_ASSERT_EQUAL(N, dest.size);
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for (unsigned i = 0; i < N; ++i)
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CPPUNIT_ASSERT_EQUAL(int16_t((src[i * 2] + src[i * 2 + 1]) / 2),
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dest.data[i]);
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/* mono to stereo */
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dest = pcm_convert_channels_16(buffer, 2, 1, { src, N * 2 });
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CPPUNIT_ASSERT(!dest.IsNull());
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CPPUNIT_ASSERT_EQUAL(N * 4, dest.size);
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for (unsigned i = 0; i < N; ++i) {
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CPPUNIT_ASSERT_EQUAL(src[i], dest.data[i * 2]);
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CPPUNIT_ASSERT_EQUAL(src[i], dest.data[i * 2 + 1]);
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}
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}
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void
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PcmChannelsTest::TestChannels32()
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{
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constexpr size_t N = 256;
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const auto src = TestDataBuffer<int32_t, N * 2>();
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PcmBuffer buffer;
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/* stereo to mono */
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auto dest = pcm_convert_channels_32(buffer, 1, 2, { src, N * 2 });
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CPPUNIT_ASSERT(!dest.IsNull());
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CPPUNIT_ASSERT_EQUAL(N, dest.size);
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for (unsigned i = 0; i < N; ++i)
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CPPUNIT_ASSERT_EQUAL(int32_t(((int64_t)src[i * 2] + (int64_t)src[i * 2 + 1]) / 2),
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dest.data[i]);
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/* mono to stereo */
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dest = pcm_convert_channels_32(buffer, 2, 1, { src, N * 2 });
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CPPUNIT_ASSERT(!dest.IsNull());
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CPPUNIT_ASSERT_EQUAL(N * 4, dest.size);
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for (unsigned i = 0; i < N; ++i) {
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CPPUNIT_ASSERT_EQUAL(src[i], dest.data[i * 2]);
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CPPUNIT_ASSERT_EQUAL(src[i], dest.data[i * 2 + 1]);
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}
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}
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