162 lines
3.7 KiB
C++
162 lines
3.7 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 "test_pcm_util.hxx"
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#include "pcm/PcmFormat.hxx"
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#include "pcm/Dither.hxx"
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#include "pcm/Buffer.hxx"
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#include "pcm/SampleFormat.hxx"
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#include <gtest/gtest.h>
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TEST(PcmTest, Format8To16)
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{
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constexpr size_t N = 509;
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const auto src = TestDataBuffer<int8_t, N>();
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PcmBuffer buffer;
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PcmDither dither;
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auto d = pcm_convert_to_16(buffer, dither, SampleFormat::S8, src);
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EXPECT_EQ(N, d.size);
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for (size_t i = 0; i < N; ++i)
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EXPECT_EQ(int(src[i]), d[i] >> 8);
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}
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TEST(PcmTest, Format16To24)
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{
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constexpr size_t N = 509;
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const auto src = TestDataBuffer<int16_t, N>();
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PcmBuffer buffer;
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auto d = pcm_convert_to_24(buffer, SampleFormat::S16, src);
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EXPECT_EQ(N, d.size);
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for (size_t i = 0; i < N; ++i)
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EXPECT_EQ(int(src[i]), d[i] >> 8);
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}
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TEST(PcmTest, Format16To32)
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{
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constexpr size_t N = 509;
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const auto src = TestDataBuffer<int16_t, N>();
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PcmBuffer buffer;
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auto d = pcm_convert_to_32(buffer, SampleFormat::S16, src);
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EXPECT_EQ(N, d.size);
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for (size_t i = 0; i < N; ++i)
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EXPECT_EQ(int(src[i]), d[i] >> 16);
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}
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TEST(PcmTest, FormatFloat16)
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{
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constexpr size_t N = 509;
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const auto src = TestDataBuffer<int16_t, N>();
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PcmBuffer buffer1, buffer2;
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auto f = pcm_convert_to_float(buffer1, SampleFormat::S16, src);
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EXPECT_EQ(N, f.size);
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for (size_t i = 0; i != f.size; ++i) {
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EXPECT_GE(f[i], -1.f);
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EXPECT_LE(f[i], 1.f);
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}
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PcmDither dither;
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auto d = pcm_convert_to_16(buffer2, dither,
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SampleFormat::FLOAT,
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f.ToVoid());
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EXPECT_EQ(N, d.size);
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for (size_t i = 0; i < N; ++i)
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EXPECT_EQ(src[i], d[i]);
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/* check if clamping works */
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auto *writable = const_cast<float *>(f.data);
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*writable++ = 1.01;
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*writable++ = 10;
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*writable++ = -1.01;
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*writable++ = -10;
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d = pcm_convert_to_16(buffer2, dither,
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SampleFormat::FLOAT,
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f.ToVoid());
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EXPECT_EQ(N, d.size);
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EXPECT_EQ(32767, int(d[0]));
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EXPECT_EQ(32767, int(d[1]));
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EXPECT_EQ(-32768, int(d[2]));
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EXPECT_EQ(-32768, int(d[3]));
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for (size_t i = 4; i < N; ++i)
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EXPECT_EQ(src[i], d[i]);
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}
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TEST(PcmTest, FormatFloat32)
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{
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constexpr size_t N = 509;
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const auto src = TestDataBuffer<int32_t, N>();
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PcmBuffer buffer1, buffer2;
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auto f = pcm_convert_to_float(buffer1, SampleFormat::S32, src);
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EXPECT_EQ(N, f.size);
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for (size_t i = 0; i != f.size; ++i) {
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EXPECT_GE(f[i], -1.f);
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EXPECT_LE(f[i], 1.f);
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}
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auto d = pcm_convert_to_32(buffer2,
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SampleFormat::FLOAT,
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f.ToVoid());
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EXPECT_EQ(N, d.size);
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constexpr int error = 64;
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for (size_t i = 0; i < N; ++i)
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EXPECT_NEAR(src[i], d[i], error);
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/* check if clamping works */
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auto *writable = const_cast<float *>(f.data);
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*writable++ = 1.01;
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*writable++ = 10;
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*writable++ = -1.01;
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*writable++ = -10;
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d = pcm_convert_to_32(buffer2,
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SampleFormat::FLOAT,
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f.ToVoid());
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EXPECT_EQ(N, d.size);
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EXPECT_EQ(2147483647, int(d[0]));
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EXPECT_EQ(2147483647, int(d[1]));
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EXPECT_EQ(-2147483648, int(d[2]));
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EXPECT_EQ(-2147483648, int(d[3]));
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for (size_t i = 4; i < N; ++i)
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EXPECT_NEAR(src[i], d[i], error);
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}
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