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Diffstat (limited to 'third_party/webrtc/src/webrtc/common_audio/signal_processing/signal_processing_unittest.cc')
-rw-r--r-- | third_party/webrtc/src/webrtc/common_audio/signal_processing/signal_processing_unittest.cc | 579 |
1 files changed, 579 insertions, 0 deletions
diff --git a/third_party/webrtc/src/webrtc/common_audio/signal_processing/signal_processing_unittest.cc b/third_party/webrtc/src/webrtc/common_audio/signal_processing/signal_processing_unittest.cc new file mode 100644 index 00000000..108f459c --- /dev/null +++ b/third_party/webrtc/src/webrtc/common_audio/signal_processing/signal_processing_unittest.cc @@ -0,0 +1,579 @@ +/* + * Copyright (c) 2012 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + +#include "testing/gtest/include/gtest/gtest.h" +#include "webrtc/common_audio/signal_processing/include/signal_processing_library.h" + +static const size_t kVector16Size = 9; +static const int16_t vector16[kVector16Size] = {1, -15511, 4323, 1963, + WEBRTC_SPL_WORD16_MAX, 0, WEBRTC_SPL_WORD16_MIN + 5, -3333, 345}; + +class SplTest : public testing::Test { + protected: + SplTest() { + WebRtcSpl_Init(); + } + virtual ~SplTest() { + } +}; + +TEST_F(SplTest, MacroTest) { + // Macros with inputs. + int A = 10; + int B = 21; + int a = -3; + int b = WEBRTC_SPL_WORD32_MAX; + + EXPECT_EQ(10, WEBRTC_SPL_MIN(A, B)); + EXPECT_EQ(21, WEBRTC_SPL_MAX(A, B)); + + EXPECT_EQ(3, WEBRTC_SPL_ABS_W16(a)); + EXPECT_EQ(3, WEBRTC_SPL_ABS_W32(a)); + + EXPECT_EQ(-63, WEBRTC_SPL_MUL(a, B)); + EXPECT_EQ(-2147483645, WEBRTC_SPL_MUL(a, b)); + EXPECT_EQ(2147483651u, WEBRTC_SPL_UMUL(a, b)); + b = WEBRTC_SPL_WORD16_MAX >> 1; + EXPECT_EQ(4294918147u, WEBRTC_SPL_UMUL_32_16(a, b)); + EXPECT_EQ(-49149, WEBRTC_SPL_MUL_16_U16(a, b)); + + a = b; + b = -3; + + EXPECT_EQ(-1, WEBRTC_SPL_MUL_16_32_RSFT16(a, b)); + EXPECT_EQ(-1, WEBRTC_SPL_MUL_16_32_RSFT15(a, b)); + EXPECT_EQ(-3, WEBRTC_SPL_MUL_16_32_RSFT14(a, b)); + EXPECT_EQ(-24, WEBRTC_SPL_MUL_16_32_RSFT11(a, b)); + + EXPECT_EQ(-12288, WEBRTC_SPL_MUL_16_16_RSFT(a, b, 2)); + EXPECT_EQ(-12287, WEBRTC_SPL_MUL_16_16_RSFT_WITH_ROUND(a, b, 2)); + + EXPECT_EQ(21, WEBRTC_SPL_SAT(a, A, B)); + EXPECT_EQ(21, WEBRTC_SPL_SAT(a, B, A)); + + // Shifting with negative numbers allowed + int shift_amount = 1; // Workaround compiler warning using variable here. + // Positive means left shift + EXPECT_EQ(32766, WEBRTC_SPL_SHIFT_W32(a, shift_amount)); + + // Shifting with negative numbers not allowed + // We cannot do casting here due to signed/unsigned problem + EXPECT_EQ(32766, WEBRTC_SPL_LSHIFT_W32(a, 1)); + + EXPECT_EQ(8191u, WEBRTC_SPL_RSHIFT_U32(a, 1)); + + EXPECT_EQ(1470, WEBRTC_SPL_RAND(A)); + + EXPECT_EQ(-49149, WEBRTC_SPL_MUL_16_16(a, b)); + EXPECT_EQ(1073676289, WEBRTC_SPL_MUL_16_16(WEBRTC_SPL_WORD16_MAX, + WEBRTC_SPL_WORD16_MAX)); + EXPECT_EQ(1073709055, WEBRTC_SPL_MUL_16_32_RSFT16(WEBRTC_SPL_WORD16_MAX, + WEBRTC_SPL_WORD32_MAX)); + EXPECT_EQ(1073741824, WEBRTC_SPL_MUL_16_32_RSFT16(WEBRTC_SPL_WORD16_MIN, + WEBRTC_SPL_WORD32_MIN)); +#ifdef WEBRTC_ARCH_ARM_V7 + EXPECT_EQ(-1073741824, + WEBRTC_SPL_MUL_16_32_RSFT16(WEBRTC_SPL_WORD16_MIN, + WEBRTC_SPL_WORD32_MAX)); +#else + EXPECT_EQ(-1073741823, + WEBRTC_SPL_MUL_16_32_RSFT16(WEBRTC_SPL_WORD16_MIN, + WEBRTC_SPL_WORD32_MAX)); +#endif +} + +TEST_F(SplTest, InlineTest) { + int16_t a16 = 121; + int16_t b16 = -17; + int32_t a32 = 111121; + int32_t b32 = -1711; + + EXPECT_EQ(17, WebRtcSpl_GetSizeInBits(a32)); + + EXPECT_EQ(0, WebRtcSpl_NormW32(0)); + EXPECT_EQ(31, WebRtcSpl_NormW32(-1)); + EXPECT_EQ(0, WebRtcSpl_NormW32(WEBRTC_SPL_WORD32_MIN)); + EXPECT_EQ(14, WebRtcSpl_NormW32(a32)); + + EXPECT_EQ(0, WebRtcSpl_NormW16(0)); + EXPECT_EQ(15, WebRtcSpl_NormW16(-1)); + EXPECT_EQ(0, WebRtcSpl_NormW16(WEBRTC_SPL_WORD16_MIN)); + EXPECT_EQ(4, WebRtcSpl_NormW16(b32)); + for (int ii = 0; ii < 15; ++ii) { + int16_t value = 1 << ii; + EXPECT_EQ(14 - ii, WebRtcSpl_NormW16(value)); + EXPECT_EQ(15 - ii, WebRtcSpl_NormW16(-value)); + } + + EXPECT_EQ(0, WebRtcSpl_NormU32(0u)); + EXPECT_EQ(0, WebRtcSpl_NormU32(0xffffffff)); + EXPECT_EQ(15, WebRtcSpl_NormU32(static_cast<uint32_t>(a32))); + + EXPECT_EQ(104, WebRtcSpl_AddSatW16(a16, b16)); + EXPECT_EQ(138, WebRtcSpl_SubSatW16(a16, b16)); + + EXPECT_EQ(109410, WebRtcSpl_AddSatW32(a32, b32)); + EXPECT_EQ(112832, WebRtcSpl_SubSatW32(a32, b32)); + + a32 = 0x80000000; + b32 = 0x80000000; + // Cast to signed int to avoid compiler complaint on gtest.h. + EXPECT_EQ(static_cast<int>(0x80000000), WebRtcSpl_AddSatW32(a32, b32)); + a32 = 0x7fffffff; + b32 = 0x7fffffff; + EXPECT_EQ(0x7fffffff, WebRtcSpl_AddSatW32(a32, b32)); + a32 = 0; + b32 = 0x80000000; + EXPECT_EQ(0x7fffffff, WebRtcSpl_SubSatW32(a32, b32)); + a32 = 0x7fffffff; + b32 = 0x80000000; + EXPECT_EQ(0x7fffffff, WebRtcSpl_SubSatW32(a32, b32)); + a32 = 0x80000000; + b32 = 0x7fffffff; + EXPECT_EQ(static_cast<int>(0x80000000), WebRtcSpl_SubSatW32(a32, b32)); +} + +TEST_F(SplTest, MathOperationsTest) { + int A = 1134567892; + int32_t num = 117; + int32_t den = -5; + uint16_t denU = 5; + EXPECT_EQ(33700, WebRtcSpl_Sqrt(A)); + EXPECT_EQ(33683, WebRtcSpl_SqrtFloor(A)); + + + EXPECT_EQ(-91772805, WebRtcSpl_DivResultInQ31(den, num)); + EXPECT_EQ(-23, WebRtcSpl_DivW32W16ResW16(num, (int16_t)den)); + EXPECT_EQ(-23, WebRtcSpl_DivW32W16(num, (int16_t)den)); + EXPECT_EQ(23u, WebRtcSpl_DivU32U16(num, denU)); + EXPECT_EQ(0, WebRtcSpl_DivW32HiLow(128, 0, 256)); +} + +TEST_F(SplTest, BasicArrayOperationsTest) { + const size_t kVectorSize = 4; + int B[] = {4, 12, 133, 1100}; + int16_t b16[kVectorSize]; + int32_t b32[kVectorSize]; + + int16_t bTmp16[kVectorSize]; + int32_t bTmp32[kVectorSize]; + + WebRtcSpl_MemSetW16(b16, 3, kVectorSize); + for (size_t kk = 0; kk < kVectorSize; ++kk) { + EXPECT_EQ(3, b16[kk]); + } + WebRtcSpl_ZerosArrayW16(b16, kVectorSize); + for (size_t kk = 0; kk < kVectorSize; ++kk) { + EXPECT_EQ(0, b16[kk]); + } + WebRtcSpl_MemSetW32(b32, 3, kVectorSize); + for (size_t kk = 0; kk < kVectorSize; ++kk) { + EXPECT_EQ(3, b32[kk]); + } + WebRtcSpl_ZerosArrayW32(b32, kVectorSize); + for (size_t kk = 0; kk < kVectorSize; ++kk) { + EXPECT_EQ(0, b32[kk]); + } + for (size_t kk = 0; kk < kVectorSize; ++kk) { + bTmp16[kk] = (int16_t)kk; + bTmp32[kk] = (int32_t)kk; + } + WEBRTC_SPL_MEMCPY_W16(b16, bTmp16, kVectorSize); + for (size_t kk = 0; kk < kVectorSize; ++kk) { + EXPECT_EQ(b16[kk], bTmp16[kk]); + } +// WEBRTC_SPL_MEMCPY_W32(b32, bTmp32, kVectorSize); +// for (int kk = 0; kk < kVectorSize; ++kk) { +// EXPECT_EQ(b32[kk], bTmp32[kk]); +// } + WebRtcSpl_CopyFromEndW16(b16, kVectorSize, 2, bTmp16); + for (size_t kk = 0; kk < 2; ++kk) { + EXPECT_EQ(static_cast<int16_t>(kk+2), bTmp16[kk]); + } + + for (size_t kk = 0; kk < kVectorSize; ++kk) { + b32[kk] = B[kk]; + b16[kk] = (int16_t)B[kk]; + } + WebRtcSpl_VectorBitShiftW32ToW16(bTmp16, kVectorSize, b32, 1); + for (size_t kk = 0; kk < kVectorSize; ++kk) { + EXPECT_EQ((B[kk]>>1), bTmp16[kk]); + } + WebRtcSpl_VectorBitShiftW16(bTmp16, kVectorSize, b16, 1); + for (size_t kk = 0; kk < kVectorSize; ++kk) { + EXPECT_EQ((B[kk]>>1), bTmp16[kk]); + } + WebRtcSpl_VectorBitShiftW32(bTmp32, kVectorSize, b32, 1); + for (size_t kk = 0; kk < kVectorSize; ++kk) { + EXPECT_EQ((B[kk]>>1), bTmp32[kk]); + } + + WebRtcSpl_MemCpyReversedOrder(&bTmp16[3], b16, kVectorSize); + for (size_t kk = 0; kk < kVectorSize; ++kk) { + EXPECT_EQ(b16[3-kk], bTmp16[kk]); + } +} + +TEST_F(SplTest, MinMaxOperationsTest) { + const size_t kVectorSize = 17; + + // Vectors to test the cases where minimum values have to be caught + // outside of the unrolled loops in ARM-Neon. + int16_t vector16[kVectorSize] = {-1, 7485, 0, 3333, + -18283, 0, 12334, -29871, 988, -3333, + 345, -456, 222, 999, 888, 8774, WEBRTC_SPL_WORD16_MIN}; + int32_t vector32[kVectorSize] = {-1, 0, 283211, 3333, + 8712345, 0, -3333, 89345, -374585456, 222, 999, 122345334, + -12389756, -987329871, 888, -2, WEBRTC_SPL_WORD32_MIN}; + + EXPECT_EQ(WEBRTC_SPL_WORD16_MIN, + WebRtcSpl_MinValueW16(vector16, kVectorSize)); + EXPECT_EQ(WEBRTC_SPL_WORD32_MIN, + WebRtcSpl_MinValueW32(vector32, kVectorSize)); + EXPECT_EQ(kVectorSize - 1, WebRtcSpl_MinIndexW16(vector16, kVectorSize)); + EXPECT_EQ(kVectorSize - 1, WebRtcSpl_MinIndexW32(vector32, kVectorSize)); + + // Test the cases where maximum values have to be caught + // outside of the unrolled loops in ARM-Neon. + vector16[kVectorSize - 1] = WEBRTC_SPL_WORD16_MAX; + vector32[kVectorSize - 1] = WEBRTC_SPL_WORD32_MAX; + + EXPECT_EQ(WEBRTC_SPL_WORD16_MAX, + WebRtcSpl_MaxAbsValueW16(vector16, kVectorSize)); + EXPECT_EQ(WEBRTC_SPL_WORD16_MAX, + WebRtcSpl_MaxValueW16(vector16, kVectorSize)); + EXPECT_EQ(WEBRTC_SPL_WORD32_MAX, + WebRtcSpl_MaxAbsValueW32(vector32, kVectorSize)); + EXPECT_EQ(WEBRTC_SPL_WORD32_MAX, + WebRtcSpl_MaxValueW32(vector32, kVectorSize)); + EXPECT_EQ(kVectorSize - 1, WebRtcSpl_MaxAbsIndexW16(vector16, kVectorSize)); + EXPECT_EQ(kVectorSize - 1, WebRtcSpl_MaxIndexW16(vector16, kVectorSize)); + EXPECT_EQ(kVectorSize - 1, WebRtcSpl_MaxIndexW32(vector32, kVectorSize)); + + // Test the cases where multiple maximum and minimum values are present. + vector16[1] = WEBRTC_SPL_WORD16_MAX; + vector16[6] = WEBRTC_SPL_WORD16_MIN; + vector16[11] = WEBRTC_SPL_WORD16_MIN; + vector32[1] = WEBRTC_SPL_WORD32_MAX; + vector32[6] = WEBRTC_SPL_WORD32_MIN; + vector32[11] = WEBRTC_SPL_WORD32_MIN; + + EXPECT_EQ(WEBRTC_SPL_WORD16_MAX, + WebRtcSpl_MaxAbsValueW16(vector16, kVectorSize)); + EXPECT_EQ(WEBRTC_SPL_WORD16_MAX, + WebRtcSpl_MaxValueW16(vector16, kVectorSize)); + EXPECT_EQ(WEBRTC_SPL_WORD16_MIN, + WebRtcSpl_MinValueW16(vector16, kVectorSize)); + EXPECT_EQ(WEBRTC_SPL_WORD32_MAX, + WebRtcSpl_MaxAbsValueW32(vector32, kVectorSize)); + EXPECT_EQ(WEBRTC_SPL_WORD32_MAX, + WebRtcSpl_MaxValueW32(vector32, kVectorSize)); + EXPECT_EQ(WEBRTC_SPL_WORD32_MIN, + WebRtcSpl_MinValueW32(vector32, kVectorSize)); + EXPECT_EQ(6u, WebRtcSpl_MaxAbsIndexW16(vector16, kVectorSize)); + EXPECT_EQ(1u, WebRtcSpl_MaxIndexW16(vector16, kVectorSize)); + EXPECT_EQ(1u, WebRtcSpl_MaxIndexW32(vector32, kVectorSize)); + EXPECT_EQ(6u, WebRtcSpl_MinIndexW16(vector16, kVectorSize)); + EXPECT_EQ(6u, WebRtcSpl_MinIndexW32(vector32, kVectorSize)); +} + +TEST_F(SplTest, VectorOperationsTest) { + const size_t kVectorSize = 4; + int B[] = {4, 12, 133, 1100}; + int16_t a16[kVectorSize]; + int16_t b16[kVectorSize]; + int16_t bTmp16[kVectorSize]; + + for (size_t kk = 0; kk < kVectorSize; ++kk) { + a16[kk] = B[kk]; + b16[kk] = B[kk]; + } + + WebRtcSpl_AffineTransformVector(bTmp16, b16, 3, 7, 2, kVectorSize); + for (size_t kk = 0; kk < kVectorSize; ++kk) { + EXPECT_EQ((B[kk]*3+7)>>2, bTmp16[kk]); + } + WebRtcSpl_ScaleAndAddVectorsWithRound(b16, 3, b16, 2, 2, bTmp16, kVectorSize); + for (size_t kk = 0; kk < kVectorSize; ++kk) { + EXPECT_EQ((B[kk]*3+B[kk]*2+2)>>2, bTmp16[kk]); + } + + WebRtcSpl_AddAffineVectorToVector(bTmp16, b16, 3, 7, 2, kVectorSize); + for (size_t kk = 0; kk < kVectorSize; ++kk) { + EXPECT_EQ(((B[kk]*3+B[kk]*2+2)>>2)+((b16[kk]*3+7)>>2), bTmp16[kk]); + } + + WebRtcSpl_ScaleVector(b16, bTmp16, 13, kVectorSize, 2); + for (size_t kk = 0; kk < kVectorSize; ++kk) { + EXPECT_EQ((b16[kk]*13)>>2, bTmp16[kk]); + } + WebRtcSpl_ScaleVectorWithSat(b16, bTmp16, 13, kVectorSize, 2); + for (size_t kk = 0; kk < kVectorSize; ++kk) { + EXPECT_EQ((b16[kk]*13)>>2, bTmp16[kk]); + } + WebRtcSpl_ScaleAndAddVectors(a16, 13, 2, b16, 7, 2, bTmp16, kVectorSize); + for (size_t kk = 0; kk < kVectorSize; ++kk) { + EXPECT_EQ(((a16[kk]*13)>>2)+((b16[kk]*7)>>2), bTmp16[kk]); + } + + WebRtcSpl_AddVectorsAndShift(bTmp16, a16, b16, kVectorSize, 2); + for (size_t kk = 0; kk < kVectorSize; ++kk) { + EXPECT_EQ(B[kk] >> 1, bTmp16[kk]); + } + WebRtcSpl_ReverseOrderMultArrayElements(bTmp16, a16, &b16[3], kVectorSize, 2); + for (size_t kk = 0; kk < kVectorSize; ++kk) { + EXPECT_EQ((a16[kk]*b16[3-kk])>>2, bTmp16[kk]); + } + WebRtcSpl_ElementwiseVectorMult(bTmp16, a16, b16, kVectorSize, 6); + for (size_t kk = 0; kk < kVectorSize; ++kk) { + EXPECT_EQ((a16[kk]*b16[kk])>>6, bTmp16[kk]); + } + + WebRtcSpl_SqrtOfOneMinusXSquared(b16, kVectorSize, bTmp16); + for (size_t kk = 0; kk < kVectorSize - 1; ++kk) { + EXPECT_EQ(32767, bTmp16[kk]); + } + EXPECT_EQ(32749, bTmp16[kVectorSize - 1]); + + EXPECT_EQ(0, WebRtcSpl_GetScalingSquare(b16, kVectorSize, 1)); +} + +TEST_F(SplTest, EstimatorsTest) { + const size_t kOrder = 2; + const int32_t unstable_filter[] = { 4, 12, 133, 1100 }; + const int32_t stable_filter[] = { 1100, 133, 12, 4 }; + int16_t lpc[kOrder + 2] = { 0 }; + int16_t refl[kOrder + 2] = { 0 }; + int16_t lpc_result[] = { 4096, -497, 15, 0 }; + int16_t refl_result[] = { -3962, 123, 0, 0 }; + + EXPECT_EQ(0, WebRtcSpl_LevinsonDurbin(unstable_filter, lpc, refl, kOrder)); + EXPECT_EQ(1, WebRtcSpl_LevinsonDurbin(stable_filter, lpc, refl, kOrder)); + for (size_t i = 0; i < kOrder + 2; ++i) { + EXPECT_EQ(lpc_result[i], lpc[i]); + EXPECT_EQ(refl_result[i], refl[i]); + } +} + +TEST_F(SplTest, FilterTest) { + const size_t kVectorSize = 4; + const size_t kFilterOrder = 3; + int16_t A[] = {1, 2, 33, 100}; + int16_t A5[] = {1, 2, 33, 100, -5}; + int16_t B[] = {4, 12, 133, 110}; + int16_t data_in[kVectorSize]; + int16_t data_out[kVectorSize]; + int16_t bTmp16Low[kVectorSize]; + int16_t bState[kVectorSize]; + int16_t bStateLow[kVectorSize]; + + WebRtcSpl_ZerosArrayW16(bState, kVectorSize); + WebRtcSpl_ZerosArrayW16(bStateLow, kVectorSize); + + for (size_t kk = 0; kk < kVectorSize; ++kk) { + data_in[kk] = A[kk]; + data_out[kk] = 0; + } + + // MA filters. + // Note that the input data has |kFilterOrder| states before the actual + // data (one sample). + WebRtcSpl_FilterMAFastQ12(&data_in[kFilterOrder], data_out, B, + kFilterOrder + 1, 1); + EXPECT_EQ(0, data_out[0]); + // AR filters. + // Note that the output data has |kFilterOrder| states before the actual + // data (one sample). + WebRtcSpl_FilterARFastQ12(data_in, &data_out[kFilterOrder], A, + kFilterOrder + 1, 1); + EXPECT_EQ(0, data_out[kFilterOrder]); + + EXPECT_EQ(kVectorSize, WebRtcSpl_FilterAR(A5, + 5, + data_in, + kVectorSize, + bState, + kVectorSize, + bStateLow, + kVectorSize, + data_out, + bTmp16Low, + kVectorSize)); +} + +TEST_F(SplTest, RandTest) { + const int kVectorSize = 4; + int16_t BU[] = {3653, 12446, 8525, 30691}; + int16_t b16[kVectorSize]; + uint32_t bSeed = 100000; + + EXPECT_EQ(7086, WebRtcSpl_RandU(&bSeed)); + EXPECT_EQ(31565, WebRtcSpl_RandU(&bSeed)); + EXPECT_EQ(-9786, WebRtcSpl_RandN(&bSeed)); + EXPECT_EQ(kVectorSize, WebRtcSpl_RandUArray(b16, kVectorSize, &bSeed)); + for (int kk = 0; kk < kVectorSize; ++kk) { + EXPECT_EQ(BU[kk], b16[kk]); + } +} + +TEST_F(SplTest, DotProductWithScaleTest) { + EXPECT_EQ(605362796, WebRtcSpl_DotProductWithScale(vector16, + vector16, kVector16Size, 2)); +} + +TEST_F(SplTest, CrossCorrelationTest) { + // Note the function arguments relation specificed by API. + const size_t kCrossCorrelationDimension = 3; + const int kShift = 2; + const int kStep = 1; + const size_t kSeqDimension = 6; + + const int16_t kVector16[kVector16Size] = {1, 4323, 1963, + WEBRTC_SPL_WORD16_MAX, WEBRTC_SPL_WORD16_MIN + 5, -3333, -876, 8483, 142}; + int32_t vector32[kCrossCorrelationDimension] = {0}; + + WebRtcSpl_CrossCorrelation(vector32, vector16, kVector16, kSeqDimension, + kCrossCorrelationDimension, kShift, kStep); + + // WebRtcSpl_CrossCorrelationC() and WebRtcSpl_CrossCorrelationNeon() + // are not bit-exact. + const int32_t kExpected[kCrossCorrelationDimension] = + {-266947903, -15579555, -171282001}; + const int32_t* expected = kExpected; +#if !defined(MIPS32_LE) + const int32_t kExpectedNeon[kCrossCorrelationDimension] = + {-266947901, -15579553, -171281999}; + if (WebRtcSpl_CrossCorrelation != WebRtcSpl_CrossCorrelationC) { + expected = kExpectedNeon; + } +#endif + for (size_t i = 0; i < kCrossCorrelationDimension; ++i) { + EXPECT_EQ(expected[i], vector32[i]); + } +} + +TEST_F(SplTest, AutoCorrelationTest) { + int scale = 0; + int32_t vector32[kVector16Size]; + const int32_t expected[kVector16Size] = {302681398, 14223410, -121705063, + -85221647, -17104971, 61806945, 6644603, -669329, 43}; + + EXPECT_EQ(kVector16Size, + WebRtcSpl_AutoCorrelation(vector16, kVector16Size, + kVector16Size - 1, vector32, &scale)); + EXPECT_EQ(3, scale); + for (size_t i = 0; i < kVector16Size; ++i) { + EXPECT_EQ(expected[i], vector32[i]); + } +} + +TEST_F(SplTest, SignalProcessingTest) { + const size_t kVectorSize = 4; + int A[] = {1, 2, 33, 100}; + const int16_t kHanning[4] = { 2399, 8192, 13985, 16384 }; + int16_t b16[kVectorSize]; + + int16_t bTmp16[kVectorSize]; + + int bScale = 0; + + for (size_t kk = 0; kk < kVectorSize; ++kk) { + b16[kk] = A[kk]; + } + + // TODO(bjornv): Activate the Reflection Coefficient tests when refactoring. +// WebRtcSpl_ReflCoefToLpc(b16, kVectorSize, bTmp16); +//// for (int kk = 0; kk < kVectorSize; ++kk) { +//// EXPECT_EQ(aTmp16[kk], bTmp16[kk]); +//// } +// WebRtcSpl_LpcToReflCoef(bTmp16, kVectorSize, b16); +//// for (int kk = 0; kk < kVectorSize; ++kk) { +//// EXPECT_EQ(a16[kk], b16[kk]); +//// } +// WebRtcSpl_AutoCorrToReflCoef(b32, kVectorSize, bTmp16); +//// for (int kk = 0; kk < kVectorSize; ++kk) { +//// EXPECT_EQ(aTmp16[kk], bTmp16[kk]); +//// } + + WebRtcSpl_GetHanningWindow(bTmp16, kVectorSize); + for (size_t kk = 0; kk < kVectorSize; ++kk) { + EXPECT_EQ(kHanning[kk], bTmp16[kk]); + } + + for (size_t kk = 0; kk < kVectorSize; ++kk) { + b16[kk] = A[kk]; + } + EXPECT_EQ(11094 , WebRtcSpl_Energy(b16, kVectorSize, &bScale)); + EXPECT_EQ(0, bScale); +} + +TEST_F(SplTest, FFTTest) { + int16_t B[] = {1, 2, 33, 100, + 2, 3, 34, 101, + 3, 4, 35, 102, + 4, 5, 36, 103}; + + EXPECT_EQ(0, WebRtcSpl_ComplexFFT(B, 3, 1)); +// for (int kk = 0; kk < 16; ++kk) { +// EXPECT_EQ(A[kk], B[kk]); +// } + EXPECT_EQ(0, WebRtcSpl_ComplexIFFT(B, 3, 1)); +// for (int kk = 0; kk < 16; ++kk) { +// EXPECT_EQ(A[kk], B[kk]); +// } + WebRtcSpl_ComplexBitReverse(B, 3); + for (int kk = 0; kk < 16; ++kk) { + //EXPECT_EQ(A[kk], B[kk]); + } +} + +TEST_F(SplTest, Resample48WithSaturationTest) { + // The test resamples 3*kBlockSize number of samples to 2*kBlockSize number + // of samples. + const size_t kBlockSize = 16; + + // Saturated input vector of 48 samples. + const int32_t kVectorSaturated[3 * kBlockSize + 7] = { + -32768, -32768, -32768, -32768, -32768, -32768, -32768, -32768, + -32768, -32768, -32768, -32768, -32768, -32768, -32768, -32768, + -32768, -32768, -32768, -32768, -32768, -32768, -32768, -32768, + 32767, 32767, 32767, 32767, 32767, 32767, 32767, 32767, + 32767, 32767, 32767, 32767, 32767, 32767, 32767, 32767, + 32767, 32767, 32767, 32767, 32767, 32767, 32767, 32767, + 32767, 32767, 32767, 32767, 32767, 32767, 32767 + }; + + // All values in |out_vector| should be |kRefValue32kHz|. + const int32_t kRefValue32kHz1 = -1077493760; + const int32_t kRefValue32kHz2 = 1077493645; + + // After bit shift with saturation, |out_vector_w16| is saturated. + + const int16_t kRefValue16kHz1 = -32768; + const int16_t kRefValue16kHz2 = 32767; + // Vector for storing output. + int32_t out_vector[2 * kBlockSize]; + int16_t out_vector_w16[2 * kBlockSize]; + + WebRtcSpl_Resample48khzTo32khz(kVectorSaturated, out_vector, kBlockSize); + WebRtcSpl_VectorBitShiftW32ToW16(out_vector_w16, 2 * kBlockSize, out_vector, + 15); + + // Comparing output values against references. The values at position + // 12-15 are skipped to account for the filter lag. + for (size_t i = 0; i < 12; ++i) { + EXPECT_EQ(kRefValue32kHz1, out_vector[i]); + EXPECT_EQ(kRefValue16kHz1, out_vector_w16[i]); + } + for (size_t i = 16; i < 2 * kBlockSize; ++i) { + EXPECT_EQ(kRefValue32kHz2, out_vector[i]); + EXPECT_EQ(kRefValue16kHz2, out_vector_w16[i]); + } +} |