87 lines
2.3 KiB
C++
87 lines
2.3 KiB
C++
/*
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* Copyright 2003-2016 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/PcmMix.hxx"
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#include "pcm/PcmDither.hxx"
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template<typename T, SampleFormat format, typename G=RandomInt<T>>
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static void
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TestPcmMix(G g=G())
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{
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constexpr unsigned N = 509;
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const auto src1 = TestDataBuffer<T, N>(g);
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const auto src2 = TestDataBuffer<T, N>(g);
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PcmDither dither;
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/* portion1=1.0: result must be equal to src1 */
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auto result = src1;
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bool success = pcm_mix(dither,
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result.begin(), src2.begin(), sizeof(result),
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format, 1.0);
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CPPUNIT_ASSERT(success);
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AssertEqualWithTolerance(result, src1, 3);
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/* portion1=0.0: result must be equal to src2 */
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result = src1;
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success = pcm_mix(dither, result.begin(), src2.begin(), sizeof(result),
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format, 0.0);
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CPPUNIT_ASSERT(success);
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AssertEqualWithTolerance(result, src2, 3);
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/* portion1=0.5 */
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result = src1;
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success = pcm_mix(dither, result.begin(), src2.begin(), sizeof(result),
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format, 0.5);
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CPPUNIT_ASSERT(success);
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auto expected = src1;
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for (unsigned i = 0; i < N; ++i)
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expected[i] = (int64_t(src1[i]) + int64_t(src2[i])) / 2;
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AssertEqualWithTolerance(result, expected, 3);
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}
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void
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PcmMixTest::TestMix8()
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{
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TestPcmMix<int8_t, SampleFormat::S8>();
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}
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void
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PcmMixTest::TestMix16()
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{
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TestPcmMix<int16_t, SampleFormat::S16>();
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}
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void
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PcmMixTest::TestMix24()
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{
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TestPcmMix<int32_t, SampleFormat::S24_P32>(RandomInt24());
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}
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void
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PcmMixTest::TestMix32()
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{
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TestPcmMix<int32_t, SampleFormat::S32>();
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}
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