Adding upstream version 124.0.1.upstream/124.0.1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 102 insertions, 0 deletions

diff --git a/third_party/libwebrtc/common_audio/real_fourier_unittest.cc b/third_party/libwebrtc/common_audio/real_fourier_unittest.cc
new file mode 100644
index 0000000000..eac4fce42e
--- /dev/null
+++ b/third_party/libwebrtc/common_audio/real_fourier_unittest.cc
@@ -0,0 +1,102 @@
+/*
+ *  Copyright (c) 2014 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 "common_audio/real_fourier.h"
+
+#include <stdlib.h>
+
+#include "common_audio/real_fourier_ooura.h"
+#include "test/gtest.h"
+
+namespace webrtc {
+
+using std::complex;
+
+TEST(RealFourierStaticsTest, AllocatorAlignment) {
+  {
+    RealFourier::fft_real_scoper real;
+    real = RealFourier::AllocRealBuffer(3);
+    ASSERT_TRUE(real.get() != nullptr);
+    uintptr_t ptr_value = reinterpret_cast<uintptr_t>(real.get());
+    EXPECT_EQ(0u, ptr_value % RealFourier::kFftBufferAlignment);
+  }
+  {
+    RealFourier::fft_cplx_scoper cplx;
+    cplx = RealFourier::AllocCplxBuffer(3);
+    ASSERT_TRUE(cplx.get() != nullptr);
+    uintptr_t ptr_value = reinterpret_cast<uintptr_t>(cplx.get());
+    EXPECT_EQ(0u, ptr_value % RealFourier::kFftBufferAlignment);
+  }
+}
+
+TEST(RealFourierStaticsTest, OrderComputation) {
+  EXPECT_EQ(4, RealFourier::FftOrder(13));
+  EXPECT_EQ(5, RealFourier::FftOrder(32));
+  EXPECT_EQ(1, RealFourier::FftOrder(2));
+  EXPECT_EQ(0, RealFourier::FftOrder(1));
+}
+
+TEST(RealFourierStaticsTest, ComplexLengthComputation) {
+  EXPECT_EQ(2U, RealFourier::ComplexLength(1));
+  EXPECT_EQ(3U, RealFourier::ComplexLength(2));
+  EXPECT_EQ(5U, RealFourier::ComplexLength(3));
+  EXPECT_EQ(9U, RealFourier::ComplexLength(4));
+  EXPECT_EQ(17U, RealFourier::ComplexLength(5));
+  EXPECT_EQ(65U, RealFourier::ComplexLength(7));
+}
+
+template <typename T>
+class RealFourierTest : public ::testing::Test {
+ protected:
+  RealFourierTest()
+      : rf_(2),
+        real_buffer_(RealFourier::AllocRealBuffer(4)),
+        cplx_buffer_(RealFourier::AllocCplxBuffer(3)) {}
+
+  ~RealFourierTest() {}
+
+  T rf_;
+  const RealFourier::fft_real_scoper real_buffer_;
+  const RealFourier::fft_cplx_scoper cplx_buffer_;
+};
+
+using FftTypes = ::testing::Types<RealFourierOoura>;
+TYPED_TEST_SUITE(RealFourierTest, FftTypes);
+
+TYPED_TEST(RealFourierTest, SimpleForwardTransform) {
+  this->real_buffer_[0] = 1.0f;
+  this->real_buffer_[1] = 2.0f;
+  this->real_buffer_[2] = 3.0f;
+  this->real_buffer_[3] = 4.0f;
+
+  this->rf_.Forward(this->real_buffer_.get(), this->cplx_buffer_.get());
+
+  EXPECT_NEAR(this->cplx_buffer_[0].real(), 10.0f, 1e-8f);
+  EXPECT_NEAR(this->cplx_buffer_[0].imag(), 0.0f, 1e-8f);
+  EXPECT_NEAR(this->cplx_buffer_[1].real(), -2.0f, 1e-8f);
+  EXPECT_NEAR(this->cplx_buffer_[1].imag(), 2.0f, 1e-8f);
+  EXPECT_NEAR(this->cplx_buffer_[2].real(), -2.0f, 1e-8f);
+  EXPECT_NEAR(this->cplx_buffer_[2].imag(), 0.0f, 1e-8f);
+}
+
+TYPED_TEST(RealFourierTest, SimpleBackwardTransform) {
+  this->cplx_buffer_[0] = complex<float>(10.0f, 0.0f);
+  this->cplx_buffer_[1] = complex<float>(-2.0f, 2.0f);
+  this->cplx_buffer_[2] = complex<float>(-2.0f, 0.0f);
+
+  this->rf_.Inverse(this->cplx_buffer_.get(), this->real_buffer_.get());
+
+  EXPECT_NEAR(this->real_buffer_[0], 1.0f, 1e-8f);
+  EXPECT_NEAR(this->real_buffer_[1], 2.0f, 1e-8f);
+  EXPECT_NEAR(this->real_buffer_[2], 3.0f, 1e-8f);
+  EXPECT_NEAR(this->real_buffer_[3], 4.0f, 1e-8f);
+}
+
+}  // namespace webrtc