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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/time/time.h"
#include "media/base/audio_bus.h"
#include "media/base/fake_audio_render_callback.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "testing/perf/perf_test.h"
namespace media {
static const int kBenchmarkIterations = 20;
template <typename T>
void RunInterleaveBench(AudioBus* bus, const std::string& trace_name) {
const int frame_size = bus->frames() * bus->channels();
scoped_ptr<T> interleaved(new T[frame_size]);
const int byte_size = sizeof(*interleaved);
base::TimeTicks start = base::TimeTicks::HighResNow();
for (int i = 0; i < kBenchmarkIterations; ++i) {
bus->ToInterleaved(bus->frames(), byte_size, interleaved.get());
}
double total_time_milliseconds =
(base::TimeTicks::HighResNow() - start).InMillisecondsF();
perf_test::PrintResult(
"audio_bus_to_interleaved", "", trace_name,
total_time_milliseconds / kBenchmarkIterations, "ms", true);
start = base::TimeTicks::HighResNow();
for (int i = 0; i < kBenchmarkIterations; ++i) {
bus->FromInterleaved(interleaved.get(), bus->frames(), byte_size);
}
total_time_milliseconds =
(base::TimeTicks::HighResNow() - start).InMillisecondsF();
perf_test::PrintResult(
"audio_bus_from_interleaved", "", trace_name,
total_time_milliseconds / kBenchmarkIterations, "ms", true);
}
// Benchmark the FromInterleaved() and ToInterleaved() methods.
TEST(AudioBusPerfTest, Interleave) {
scoped_ptr<AudioBus> bus = AudioBus::Create(2, 48000 * 120);
FakeAudioRenderCallback callback(0.2);
callback.Render(bus.get(), 0);
RunInterleaveBench<int8>(bus.get(), "int8");
RunInterleaveBench<int16>(bus.get(), "int16");
RunInterleaveBench<int32>(bus.get(), "int32");
}
} // namespace media
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