110 lines
3.1 KiB
C++
110 lines
3.1 KiB
C++
/*
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* Copyright 2003-2020 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/PcmChannels.hxx"
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#include "pcm/Buffer.hxx"
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#include "util/ConstBuffer.hxx"
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#include <gtest/gtest.h>
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TEST(PcmTest, Channels16)
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{
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constexpr size_t N = 509;
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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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EXPECT_FALSE(dest.IsNull());
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EXPECT_EQ(N, dest.size);
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for (unsigned i = 0; i < N; ++i)
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EXPECT_EQ(int16_t((src[i * 2] + src[i * 2 + 1]) / 2),
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dest[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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EXPECT_FALSE(dest.IsNull());
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EXPECT_EQ(N * 4, dest.size);
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for (unsigned i = 0; i < N; ++i) {
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EXPECT_EQ(src[i], dest[i * 2]);
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EXPECT_EQ(src[i], dest[i * 2 + 1]);
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}
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/* stereo to 5.1 */
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dest = pcm_convert_channels_16(buffer, 6, 2, { src, N * 2 });
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EXPECT_FALSE(dest.IsNull());
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EXPECT_EQ(N * 6, dest.size);
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constexpr int16_t silence = 0;
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for (unsigned i = 0; i < N; ++i) {
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EXPECT_EQ(src[i * 2], dest[i * 6]);
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EXPECT_EQ(src[i * 2 + 1], dest[i * 6+ 1]);
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EXPECT_EQ(silence, dest[i * 6 + 2]);
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EXPECT_EQ(silence, dest[i * 6 + 3]);
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EXPECT_EQ(silence, dest[i * 6 + 4]);
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EXPECT_EQ(silence, dest[i * 6 + 5]);
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}
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}
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TEST(PcmTest, Channels32)
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{
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constexpr size_t N = 509;
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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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EXPECT_FALSE(dest.IsNull());
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EXPECT_EQ(N, dest.size);
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for (unsigned i = 0; i < N; ++i)
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EXPECT_EQ(int32_t(((int64_t)src[i * 2] + (int64_t)src[i * 2 + 1]) / 2),
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dest[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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EXPECT_FALSE(dest.IsNull());
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EXPECT_EQ(N * 4, dest.size);
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for (unsigned i = 0; i < N; ++i) {
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EXPECT_EQ(src[i], dest[i * 2]);
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EXPECT_EQ(src[i], dest[i * 2 + 1]);
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}
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/* stereo to 5.1 */
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dest = pcm_convert_channels_32(buffer, 6, 2, { src, N * 2 });
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EXPECT_FALSE(dest.IsNull());
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EXPECT_EQ(N * 6, dest.size);
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constexpr int32_t silence = 0;
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for (unsigned i = 0; i < N; ++i) {
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EXPECT_EQ(src[i * 2], dest[i * 6]);
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EXPECT_EQ(src[i * 2 + 1], dest[i * 6+ 1]);
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EXPECT_EQ(silence, dest[i * 6 + 2]);
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EXPECT_EQ(silence, dest[i * 6 + 3]);
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EXPECT_EQ(silence, dest[i * 6 + 4]);
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EXPECT_EQ(silence, dest[i * 6 + 5]);
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}
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}
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