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93 lines
2.3 KiB
C++
93 lines
2.3 KiB
C++
// SPDX-License-Identifier: GPL-2.0-or-later
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// Copyright The Music Player Daemon Project
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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 <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);
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EXPECT_NE(dest.data(), nullptr);
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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);
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EXPECT_NE(dest.data(), nullptr);
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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);
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EXPECT_NE(dest.data(), nullptr);
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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);
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EXPECT_NE(dest.data(), nullptr);
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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);
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EXPECT_NE(dest.data(), nullptr);
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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);
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EXPECT_NE(dest.data(), nullptr);
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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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