Experiment with AVX optimizations for FMAC, FMUL operations.

media/base/sinc_resampler_unittest.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // MSVC++ requires this to be set before any other includes to get M_PI.
 #define _USE_MATH_DEFINES
 
 #include <cmath>
 #include <memory>
 
@@ skipping 133 matching lines @@
       kSampleRateRatio, SincResampler::kDefaultRequestSize,
       base::Bind(&MockSource::ProvideInput, base::Unretained(&mock_source)));
 
   base::TimeTicks start = base::TimeTicks::Now();
   for (int i = 1; i < 10000; ++i)
     resampler.SetRatio(1.0 / i);
   double total_time_c_ms = (base::TimeTicks::Now() - start).InMillisecondsF();
   printf("SetRatio() took %.2fms.\n", total_time_c_ms);
 }
 
-
-// Define platform independent function name for Convolve* tests.
-#if defined(ARCH_CPU_X86_FAMILY)
-#define CONVOLVE_FUNC Convolve_SSE
-#elif defined(ARCH_CPU_ARM_FAMILY) && defined(USE_NEON)
-#define CONVOLVE_FUNC Convolve_NEON
-#endif
-
-// Ensure various optimized Convolve() methods return the same value.  Only run
-// this test if other optimized methods exist, otherwise the default Convolve()
-// will be tested by the parameterized SincResampler tests below.
-#if defined(CONVOLVE_FUNC)
-static const double kKernelInterpolationFactor = 0.5;
-
-TEST(SincResamplerTest, Convolve) {
-  // Initialize a dummy resampler.
-  MockSource mock_source;
-  SincResampler resampler(
-      kSampleRateRatio, SincResampler::kDefaultRequestSize,
-      base::Bind(&MockSource::ProvideInput, base::Unretained(&mock_source)));
-
-  // The optimized Convolve methods are slightly more precise than Convolve_C(),
-  // so comparison must be done using an epsilon.
-  static const double kEpsilon = 0.00000005;
-
-  // Use a kernel from SincResampler as input and kernel data, this has the
-  // benefit of already being properly sized and aligned for Convolve_SSE().
-  double result = resampler.Convolve_C(
-      resampler.kernel_storage_.get(), resampler.kernel_storage_.get(),
-      resampler.kernel_storage_.get(), kKernelInterpolationFactor);
-  double result2 = resampler.CONVOLVE_FUNC(
-      resampler.kernel_storage_.get(), resampler.kernel_storage_.get(),
-      resampler.kernel_storage_.get(), kKernelInterpolationFactor);
-  EXPECT_NEAR(result2, result, kEpsilon);
-
-  // Test Convolve() w/ unaligned input pointer.
-  result = resampler.Convolve_C(
-      resampler.kernel_storage_.get() + 1, resampler.kernel_storage_.get(),
-      resampler.kernel_storage_.get(), kKernelInterpolationFactor);
-  result2 = resampler.CONVOLVE_FUNC(
-      resampler.kernel_storage_.get() + 1, resampler.kernel_storage_.get(),
-      resampler.kernel_storage_.get(), kKernelInterpolationFactor);
-  EXPECT_NEAR(result2, result, kEpsilon);
-}
-#endif
-
 // Fake audio source for testing the resampler.  Generates a sinusoidal linear
 // chirp (http://en.wikipedia.org/wiki/Chirp) which can be tuned to stress the
 // resampler for the specific sample rate conversion being used.
 class SinusoidalLinearChirpSource {
  public:
   SinusoidalLinearChirpSource(int sample_rate,
                               int samples,
                               double max_frequency)
       : sample_rate_(sample_rate),
         total_samples_(samples),
@@ skipping 193 matching lines @@
         std::tr1::make_tuple(11025, 192000, kResamplingRMSError, -62.61),
         std::tr1::make_tuple(16000, 192000, kResamplingRMSError, -63.14),
         std::tr1::make_tuple(22050, 192000, kResamplingRMSError, -62.42),
         std::tr1::make_tuple(32000, 192000, kResamplingRMSError, -63.38),
         std::tr1::make_tuple(44100, 192000, kResamplingRMSError, -62.63),
         std::tr1::make_tuple(48000, 192000, kResamplingRMSError, -73.44),
         std::tr1::make_tuple(96000, 192000, kResamplingRMSError, -73.52),
         std::tr1::make_tuple(192000, 192000, kResamplingRMSError, -73.52)));
 
 }  // namespace media