| // 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 <memory> |
| |
| #include "base/time/time.h" |
| #include "media/base/audio_converter.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 = 200000; |
| |
| // InputCallback that zero's out the provided AudioBus. |
| class NullInputProvider : public AudioConverter::InputCallback { |
| public: |
| NullInputProvider() = default; |
| ~NullInputProvider() override = default; |
| |
| double ProvideInput(AudioBus* audio_bus, uint32_t frames_delayed) override { |
| audio_bus->Zero(); |
| return 1; |
| } |
| }; |
| |
| void RunConvertBenchmark(const AudioParameters& in_params, |
| const AudioParameters& out_params, |
| bool fifo, |
| const std::string& trace_name) { |
| NullInputProvider fake_input1; |
| NullInputProvider fake_input2; |
| NullInputProvider fake_input3; |
| std::unique_ptr<AudioBus> output_bus = AudioBus::Create(out_params); |
| |
| AudioConverter converter(in_params, out_params, !fifo); |
| converter.AddInput(&fake_input1); |
| converter.AddInput(&fake_input2); |
| converter.AddInput(&fake_input3); |
| |
| base::TimeTicks start = base::TimeTicks::Now(); |
| for (int i = 0; i < kBenchmarkIterations; ++i) { |
| converter.Convert(output_bus.get()); |
| } |
| double runs_per_second = kBenchmarkIterations / |
| (base::TimeTicks::Now() - start).InSecondsF(); |
| perf_test::PrintResult( |
| "audio_converter", "", trace_name, runs_per_second, "runs/s", true); |
| } |
| |
| TEST(AudioConverterPerfTest, ConvertBenchmark) { |
| // Create input and output parameters to convert between the two most common |
| // sets of parameters (as indicated via UMA data). |
| AudioParameters input_params(AudioParameters::AUDIO_PCM_LINEAR, |
| CHANNEL_LAYOUT_MONO, 48000, 2048); |
| AudioParameters output_params(AudioParameters::AUDIO_PCM_LINEAR, |
| CHANNEL_LAYOUT_STEREO, 44100, 440); |
| |
| RunConvertBenchmark(input_params, output_params, false, "convert"); |
| } |
| |
| TEST(AudioConverterPerfTest, ConvertBenchmarkFIFO) { |
| // Create input and output parameters to convert between common buffer sizes |
| // without any resampling for the FIFO vs no FIFO benchmarks. |
| AudioParameters input_params(AudioParameters::AUDIO_PCM_LINEAR, |
| CHANNEL_LAYOUT_STEREO, |
| 44100, |
| 2048); |
| AudioParameters output_params(AudioParameters::AUDIO_PCM_LINEAR, |
| CHANNEL_LAYOUT_STEREO, 44100, 440); |
| |
| RunConvertBenchmark(input_params, output_params, true, "convert_fifo_only"); |
| RunConvertBenchmark(input_params, output_params, false, |
| "convert_pass_through"); |
| } |
| |
| } // namespace media |