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68 lines
1.5 KiB
C++
68 lines
1.5 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/Mix.hxx"
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#include "pcm/Dither.hxx"
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#include <gtest/gtest.h>
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template<typename T, SampleFormat format, typename G=RandomInt<T>>
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static void
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TestPcmMix(G g=G())
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{
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constexpr unsigned N = 509;
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const auto src1 = TestDataBuffer<T, N>(g);
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const auto src2 = TestDataBuffer<T, N>(g);
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PcmDither dither;
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/* portion1=1.0: result must be equal to src1 */
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auto result = src1;
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bool success = pcm_mix(dither,
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result.begin(), src2.begin(), sizeof(result),
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format, 1.0);
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ASSERT_TRUE(success);
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AssertEqualWithTolerance(result, src1, 3);
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/* portion1=0.0: result must be equal to src2 */
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result = src1;
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success = pcm_mix(dither, result.begin(), src2.begin(), sizeof(result),
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format, 0.0);
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ASSERT_TRUE(success);
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AssertEqualWithTolerance(result, src2, 3);
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/* portion1=0.5 */
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result = src1;
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success = pcm_mix(dither, result.begin(), src2.begin(), sizeof(result),
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format, 0.5);
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ASSERT_TRUE(success);
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auto expected = src1;
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for (unsigned i = 0; i < N; ++i)
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expected[i] = (int64_t(src1[i]) + int64_t(src2[i])) / 2;
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for (unsigned i = 0; i < N; ++i)
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EXPECT_NEAR(result[i], expected[i], 3);
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}
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TEST(PcmTest, Mix8)
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{
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TestPcmMix<int8_t, SampleFormat::S8>();
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}
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TEST(PcmTest, Mix16)
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{
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TestPcmMix<int16_t, SampleFormat::S16>();
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}
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TEST(PcmTest, Mix24)
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{
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TestPcmMix<int32_t, SampleFormat::S24_P32>(RandomInt24());
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}
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TEST(PcmTest, Mix32)
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{
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TestPcmMix<int32_t, SampleFormat::S32>();
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}
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