161 lines
4.0 KiB
C++
161 lines
4.0 KiB
C++
/*
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* Copyright 2003-2021 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 "pcm/Volume.hxx"
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#include "pcm/Traits.hxx"
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#include "util/ConstBuffer.hxx"
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#include "test_pcm_util.hxx"
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#include <gtest/gtest.h>
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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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using value_type = typename Traits::value_type;
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PcmVolume pv;
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EXPECT_EQ(pv.Open(F, false), F);
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constexpr size_t N = 509;
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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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EXPECT_EQ(src.size, dest.size);
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EXPECT_EQ(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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EXPECT_EQ(src.size, dest.size);
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EXPECT_EQ(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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EXPECT_EQ(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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EXPECT_GE(_dest[i], expected - 4);
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EXPECT_LE(_dest[i], expected + 4);
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}
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pv.Close();
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}
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TEST(PcmTest, Volume8)
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{
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TestVolume<SampleFormat::S8>();
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}
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TEST(PcmTest, Volume16)
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{
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TestVolume<SampleFormat::S16>();
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}
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TEST(PcmTest, Volume16to32)
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{
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constexpr SampleFormat F = SampleFormat::S16;
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using value_type = int16_t;
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RandomInt<value_type> g;
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PcmVolume pv;
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EXPECT_EQ(pv.Open(F, true), SampleFormat::S24_P32);
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constexpr size_t N = 509;
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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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EXPECT_EQ(src.size * 2, dest.size);
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EXPECT_EQ(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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EXPECT_EQ(src.size * 2, dest.size);
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auto s = ConstBuffer<int16_t>::FromVoid(src);
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auto d = ConstBuffer<int32_t>::FromVoid(dest);
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for (size_t i = 0; i < N; ++i)
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EXPECT_EQ(d[i], s[i] << 8);
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pv.SetVolume(PCM_VOLUME_1 / 2);
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dest = pv.Apply(src);
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EXPECT_EQ(src.size * 2, dest.size);
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s = ConstBuffer<int16_t>::FromVoid(src);
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d = ConstBuffer<int32_t>::FromVoid(dest);
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for (unsigned i = 0; i < N; ++i) {
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const int32_t expected = (s[i] << 8) / 2;
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EXPECT_EQ(d[i], expected);
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}
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pv.Close();
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}
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TEST(PcmTest, Volume24)
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{
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TestVolume<SampleFormat::S24_P32>(RandomInt24());
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}
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TEST(PcmTest, Volume32)
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{
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TestVolume<SampleFormat::S32>();
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}
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TEST(PcmTest, VolumeFloat)
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{
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PcmVolume pv;
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pv.Open(SampleFormat::FLOAT, false);
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constexpr size_t N = 509;
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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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EXPECT_EQ(src.size, dest.size);
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EXPECT_EQ(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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EXPECT_EQ(src.size, dest.size);
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EXPECT_EQ(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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EXPECT_EQ(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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EXPECT_NEAR((double)_src[i] / 2., (double)_dest[i], 1.);
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pv.Close();
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}
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