126 lines
3.2 KiB
C++
126 lines
3.2 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 "pcm/Volume.hxx"
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#include "pcm/Traits.hxx"
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#include "util/ConstBuffer.hxx"
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#include "util/Error.hxx"
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#include "test_pcm_util.hxx"
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#include <algorithm>
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#include <string.h>
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template<SampleFormat F, class Traits=SampleTraits<F>,
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typename G=RandomInt<typename Traits::value_type>>
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static void
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TestVolume(G g=G())
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{
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typedef typename Traits::value_type value_type;
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PcmVolume pv;
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CPPUNIT_ASSERT(pv.Open(F, IgnoreError()));
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constexpr size_t N = 256;
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static value_type zero[N];
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const auto _src = TestDataBuffer<value_type, N>(g);
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const ConstBuffer<void> src(_src, sizeof(_src));
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pv.SetVolume(0);
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auto dest = pv.Apply(src);
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CPPUNIT_ASSERT_EQUAL(src.size, dest.size);
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CPPUNIT_ASSERT_EQUAL(0, memcmp(dest.data, zero, sizeof(zero)));
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pv.SetVolume(PCM_VOLUME_1);
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dest = pv.Apply(src);
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CPPUNIT_ASSERT_EQUAL(src.size, dest.size);
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CPPUNIT_ASSERT_EQUAL(0, memcmp(dest.data, src.data, src.size));
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pv.SetVolume(PCM_VOLUME_1 / 2);
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dest = pv.Apply(src);
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CPPUNIT_ASSERT_EQUAL(src.size, dest.size);
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const auto _dest = ConstBuffer<value_type>::FromVoid(dest);
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for (unsigned i = 0; i < N; ++i) {
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const auto expected = (_src[i] + 1) / 2;
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CPPUNIT_ASSERT(_dest.data[i] >= expected - 4);
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CPPUNIT_ASSERT(_dest.data[i] <= expected + 4);
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}
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pv.Close();
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}
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void
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PcmVolumeTest::TestVolume8()
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{
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TestVolume<SampleFormat::S8>();
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}
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void
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PcmVolumeTest::TestVolume16()
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{
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TestVolume<SampleFormat::S16>();
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}
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void
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PcmVolumeTest::TestVolume24()
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{
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TestVolume<SampleFormat::S24_P32>(RandomInt24());
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}
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void
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PcmVolumeTest::TestVolume32()
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{
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TestVolume<SampleFormat::S32>();
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}
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void
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PcmVolumeTest::TestVolumeFloat()
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{
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PcmVolume pv;
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CPPUNIT_ASSERT(pv.Open(SampleFormat::FLOAT, IgnoreError()));
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constexpr size_t N = 256;
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static float zero[N];
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const auto _src = TestDataBuffer<float, N>(RandomFloat());
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const ConstBuffer<void> src(_src, sizeof(_src));
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pv.SetVolume(0);
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auto dest = pv.Apply(src);
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CPPUNIT_ASSERT_EQUAL(src.size, dest.size);
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CPPUNIT_ASSERT_EQUAL(0, memcmp(dest.data, zero, sizeof(zero)));
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pv.SetVolume(PCM_VOLUME_1);
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dest = pv.Apply(src);
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CPPUNIT_ASSERT_EQUAL(src.size, dest.size);
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CPPUNIT_ASSERT_EQUAL(0, memcmp(dest.data, src.data, src.size));
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pv.SetVolume(PCM_VOLUME_1 / 2);
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dest = pv.Apply(src);
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CPPUNIT_ASSERT_EQUAL(src.size, dest.size);
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const auto _dest = ConstBuffer<float>::FromVoid(dest);
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for (unsigned i = 0; i < N; ++i)
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CPPUNIT_ASSERT_DOUBLES_EQUAL(_src[i] / 2, _dest.data[i], 1);
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pv.Close();
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}
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