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// Copyright 2013 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.
#include "base/bind.h"
#include "base/bind_helpers.h"
#include "base/time/time.h"
#include "build/build_config.h"
#include "media/base/sinc_resampler.h"
#include "testing/gmock/include/gmock/gmock.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "testing/perf/perf_test.h"
namespace media {
static const int kBenchmarkIterations = 50000000;
static const double kSampleRateRatio = 192000.0 / 44100.0;
static const double kKernelInterpolationFactor = 0.5;
// Helper function to provide no input to SincResampler's Convolve benchmark.
static void DoNothing(int frames, float* destination) {}
// 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
static void RunConvolveBenchmark(
SincResampler* resampler,
float (*convolve_fn)(const float*, const float*, const float*, double),
bool aligned,
const std::string& trace_name) {
base::TimeTicks start = base::TimeTicks::Now();
for (int i = 0; i < kBenchmarkIterations; ++i) {
convolve_fn(resampler->get_kernel_for_testing() + (aligned ? 0 : 1),
resampler->get_kernel_for_testing(),
resampler->get_kernel_for_testing(),
kKernelInterpolationFactor);
}
double total_time_milliseconds =
(base::TimeTicks::Now() - start).InMillisecondsF();
perf_test::PrintResult("sinc_resampler_convolve",
"",
trace_name,
kBenchmarkIterations / total_time_milliseconds,
"runs/ms",
true);
}
// Benchmark for the various Convolve() methods. Make sure to build with
// branding=Chrome so that DCHECKs are compiled out when benchmarking.
TEST(SincResamplerPerfTest, Convolve) {
SincResampler resampler(kSampleRateRatio,
SincResampler::kDefaultRequestSize,
base::Bind(&DoNothing));
RunConvolveBenchmark(
&resampler, SincResampler::Convolve_C, true, "unoptimized_aligned");
#if defined(CONVOLVE_FUNC)
RunConvolveBenchmark(
&resampler, SincResampler::CONVOLVE_FUNC, true, "optimized_aligned");
RunConvolveBenchmark(
&resampler, SincResampler::CONVOLVE_FUNC, false, "optimized_unaligned");
#endif
}
#undef CONVOLVE_FUNC
} // namespace media
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