1// Copyright 2013 The Chromium Authors. All rights reserved. 2// Use of this source code is governed by a BSD-style license that can be 3// found in the LICENSE file. 4 5#include "base/bind.h" 6#include "base/bind_helpers.h" 7#include "base/time/time.h" 8#include "media/base/sinc_resampler.h" 9#include "testing/gmock/include/gmock/gmock.h" 10#include "testing/gtest/include/gtest/gtest.h" 11#include "testing/perf/perf_test.h" 12 13namespace media { 14 15static const int kBenchmarkIterations = 50000000; 16 17static const double kSampleRateRatio = 192000.0 / 44100.0; 18static const double kKernelInterpolationFactor = 0.5; 19 20// Helper function to provide no input to SincResampler's Convolve benchmark. 21static void DoNothing(int frames, float* destination) {} 22 23// Define platform independent function name for Convolve* tests. 24#if defined(ARCH_CPU_X86_FAMILY) 25#define CONVOLVE_FUNC Convolve_SSE 26#elif defined(ARCH_CPU_ARM_FAMILY) && defined(USE_NEON) 27#define CONVOLVE_FUNC Convolve_NEON 28#endif 29 30static void RunConvolveBenchmark( 31 SincResampler* resampler, 32 float (*convolve_fn)(const float*, const float*, const float*, double), 33 bool aligned, 34 const std::string& trace_name) { 35 base::TimeTicks start = base::TimeTicks::HighResNow(); 36 for (int i = 0; i < kBenchmarkIterations; ++i) { 37 convolve_fn(resampler->get_kernel_for_testing() + (aligned ? 0 : 1), 38 resampler->get_kernel_for_testing(), 39 resampler->get_kernel_for_testing(), 40 kKernelInterpolationFactor); 41 } 42 double total_time_milliseconds = 43 (base::TimeTicks::HighResNow() - start).InMillisecondsF(); 44 perf_test::PrintResult("sinc_resampler_convolve", 45 "", 46 trace_name, 47 kBenchmarkIterations / total_time_milliseconds, 48 "runs/ms", 49 true); 50} 51 52// Benchmark for the various Convolve() methods. Make sure to build with 53// branding=Chrome so that DCHECKs are compiled out when benchmarking. 54TEST(SincResamplerPerfTest, Convolve) { 55 SincResampler resampler(kSampleRateRatio, 56 SincResampler::kDefaultRequestSize, 57 base::Bind(&DoNothing)); 58 59 RunConvolveBenchmark( 60 &resampler, SincResampler::Convolve_C, true, "unoptimized_aligned"); 61 62#if defined(CONVOLVE_FUNC) 63 RunConvolveBenchmark( 64 &resampler, SincResampler::CONVOLVE_FUNC, true, "optimized_aligned"); 65 RunConvolveBenchmark( 66 &resampler, SincResampler::CONVOLVE_FUNC, false, "optimized_unaligned"); 67#endif 68} 69 70#undef CONVOLVE_FUNC 71 72} // namespace media 73