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/time/time.h" 6 #include "media/base/audio_bus.h" 7 #include "media/base/fake_audio_render_callback.h" 8 #include "testing/gtest/include/gtest/gtest.h" 9 #include "testing/perf/perf_test.h" 10 11 namespace media { 12 13 static const int kBenchmarkIterations = 20; 14 15 template <typename T> 16 void RunInterleaveBench(AudioBus* bus, const std::string& trace_name) { 17 const int frame_size = bus->frames() * bus->channels(); 18 scoped_ptr<T> interleaved(new T[frame_size]); 19 const int byte_size = sizeof(*interleaved); 20 21 base::TimeTicks start = base::TimeTicks::HighResNow(); 22 for (int i = 0; i < kBenchmarkIterations; ++i) { 23 bus->ToInterleaved(bus->frames(), byte_size, interleaved.get()); 24 } 25 double total_time_milliseconds = 26 (base::TimeTicks::HighResNow() - start).InMillisecondsF(); 27 perf_test::PrintResult( 28 "audio_bus_to_interleaved", "", trace_name, 29 total_time_milliseconds / kBenchmarkIterations, "ms", true); 30 31 start = base::TimeTicks::HighResNow(); 32 for (int i = 0; i < kBenchmarkIterations; ++i) { 33 bus->FromInterleaved(interleaved.get(), bus->frames(), byte_size); 34 } 35 total_time_milliseconds = 36 (base::TimeTicks::HighResNow() - start).InMillisecondsF(); 37 perf_test::PrintResult( 38 "audio_bus_from_interleaved", "", trace_name, 39 total_time_milliseconds / kBenchmarkIterations, "ms", true); 40 } 41 42 // Benchmark the FromInterleaved() and ToInterleaved() methods. 43 TEST(AudioBusPerfTest, Interleave) { 44 scoped_ptr<AudioBus> bus = AudioBus::Create(2, 48000 * 120); 45 FakeAudioRenderCallback callback(0.2); 46 callback.Render(bus.get(), 0); 47 48 RunInterleaveBench<int8>(bus.get(), "int8"); 49 RunInterleaveBench<int16>(bus.get(), "int16"); 50 RunInterleaveBench<int32>(bus.get(), "int32"); 51 } 52 53 } // namespace media 54
