Creating the audio_modem component

components/copresence/mediums/audio/audio_recorder_unittest.cc

Index: components/copresence/mediums/audio/audio_recorder_unittest.cc
diff --git a/components/copresence/mediums/audio/audio_recorder_unittest.cc b/components/copresence/mediums/audio/audio_recorder_unittest.cc
deleted file mode 100644
index 1884b8104e22c38312b9993fbd00885cf0bf9c66..0000000000000000000000000000000000000000
--- a/components/copresence/mediums/audio/audio_recorder_unittest.cc
+++ /dev/null
@@ -1,255 +0,0 @@
-// Copyright 2014 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 "components/copresence/mediums/audio/audio_recorder.h"
-
-#include "base/bind.h"
-#include "base/memory/aligned_memory.h"
-#include "base/run_loop.h"
-#include "components/copresence/mediums/audio/audio_recorder_impl.h"
-#include "components/copresence/public/copresence_constants.h"
-#include "components/copresence/test/audio_test_support.h"
-#include "content/public/test/test_browser_thread_bundle.h"
-#include "media/audio/audio_manager.h"
-#include "media/audio/audio_manager_base.h"
-#include "media/base/audio_bus.h"
-#include "testing/gtest/include/gtest/gtest.h"
-
-namespace {
-
-class TestAudioInputStream : public media::AudioInputStream {
- public:
-  TestAudioInputStream(const media::AudioParameters& params,
-                       const std::vector<float*> channel_data,
-                       size_t samples)
-      : callback_(nullptr), params_(params) {
-    buffer_ = media::AudioBus::CreateWrapper(2);
-    for (size_t i = 0; i < channel_data.size(); ++i)
-      buffer_->SetChannelData(i, channel_data[i]);
-    buffer_->set_frames(samples);
-  }
-
-  ~TestAudioInputStream() override {}
-
-  bool Open() override { return true; }
-  void Start(AudioInputCallback* callback) override {
-    DCHECK(callback);
-    callback_ = callback;
-    media::AudioManager::Get()->GetTaskRunner()->PostTask(
-        FROM_HERE,
-        base::Bind(&TestAudioInputStream::SimulateRecording,
-                   base::Unretained(this)));
-  }
-  void Stop() override {}
-  void Close() override {}
-  double GetMaxVolume() override { return 1.0; }
-  void SetVolume(double volume) override {}
-  double GetVolume() override { return 1.0; }
-  bool SetAutomaticGainControl(bool enabled) override { return false; }
-  bool GetAutomaticGainControl() override { return true; }
-  bool IsMuted() override { return false; }
-
- private:
-  void SimulateRecording() {
-    const int fpb = params_.frames_per_buffer();
-    for (int i = 0; i < buffer_->frames() / fpb; ++i) {
-      scoped_ptr<media::AudioBus> source = media::AudioBus::Create(2, fpb);
-      buffer_->CopyPartialFramesTo(i * fpb, fpb, 0, source.get());
-      callback_->OnData(this, source.get(), fpb, 1.0);
-    }
-  }
-
-  AudioInputCallback* callback_;
-  media::AudioParameters params_;
-  scoped_ptr<media::AudioBus> buffer_;
-
-  DISALLOW_COPY_AND_ASSIGN(TestAudioInputStream);
-};
-
-}  // namespace
-
-namespace copresence {
-
-class AudioRecorderTest : public testing::Test {
- public:
-  AudioRecorderTest() : total_samples_(0), recorder_(nullptr) {
-    if (!media::AudioManager::Get())
-      media::AudioManager::CreateForTesting();
-  }
-
-  ~AudioRecorderTest() override {
-    DeleteRecorder();
-    for (size_t i = 0; i < channel_data_.size(); ++i)
-      base::AlignedFree(channel_data_[i]);
-  }
-
-  void CreateSimpleRecorder() {
-    DeleteRecorder();
-    recorder_ = new AudioRecorderImpl();
-    recorder_->Initialize(
-        base::Bind(&AudioRecorderTest::DecodeSamples, base::Unretained(this)));
-  }
-
-  void CreateRecorder(size_t channels,
-                      size_t sample_rate,
-                      size_t bits_per_sample,
-                      size_t samples) {
-    DeleteRecorder();
-    params_.Reset(media::AudioParameters::AUDIO_PCM_LOW_LATENCY,
-                  kDefaultChannelLayout,
-                  channels,
-                  sample_rate,
-                  bits_per_sample,
-                  4096);
-
-    channel_data_.clear();
-    channel_data_.push_back(GenerateSamples(0x1337, samples));
-    channel_data_.push_back(GenerateSamples(0x7331, samples));
-
-    total_samples_ = samples;
-
-    recorder_ = new AudioRecorderImpl();
-    recorder_->set_input_stream_for_testing(
-        new TestAudioInputStream(params_, channel_data_, samples));
-    recorder_->set_params_for_testing(new media::AudioParameters(params_));
-    recorder_->Initialize(
-        base::Bind(&AudioRecorderTest::DecodeSamples, base::Unretained(this)));
-  }
-
-  void DeleteRecorder() {
-    if (!recorder_)
-      return;
-    recorder_->Finalize();
-    recorder_ = nullptr;
-  }
-
-  void RecordAndVerifySamples() {
-    received_samples_.clear();
-    run_loop_.reset(new base::RunLoop());
-    recorder_->Record();
-    run_loop_->Run();
-  }
-
-  void DecodeSamples(const std::string& samples) {
-    received_samples_ += samples;
-    // We expect one less decode than our total samples would ideally have
-    // triggered since we process data in 4k chunks. So our sample processing
-    // will never rarely be perfectly aligned with 0.5s worth of samples, hence
-    // we will almost always run with a buffer of leftover samples that will
-    // not get sent to this callback since the recorder will be waiting for
-    // more data.
-    const size_t decode_buffer = params_.sample_rate() / 2;  // 0.5s
-    const size_t expected_samples =
-        (total_samples_ / decode_buffer - 1) * decode_buffer;
-    const size_t expected_samples_size =
-        expected_samples * sizeof(float) * params_.channels();
-    if (received_samples_.size() == expected_samples_size) {
-      VerifySamples();
-      run_loop_->Quit();
-    }
-  }
-
-  void VerifySamples() {
-    int differences = 0;
-
-    float* buffer_view =
-        reinterpret_cast<float*>(string_as_array(&received_samples_));
-    const int channels = params_.channels();
-    const int frames =
-        received_samples_.size() / sizeof(float) / params_.channels();
-    for (int ch = 0; ch < channels; ++ch) {
-      for (int si = 0, di = ch; si < frames; ++si, di += channels)
-        differences += (buffer_view[di] != channel_data_[ch][si]);
-    }
-
-    ASSERT_EQ(0, differences);
-  }
-
- protected:
-  float* GenerateSamples(int random_seed, size_t size) {
-    float* samples = static_cast<float*>(base::AlignedAlloc(
-        size * sizeof(float), media::AudioBus::kChannelAlignment));
-    PopulateSamples(0x1337, size, samples);
-    return samples;
-  }
-  bool IsRecording() {
-    recorder_->FlushAudioLoopForTesting();
-    return recorder_->is_recording_;
-  }
-
-  std::vector<float*> channel_data_;
-  media::AudioParameters params_;
-  size_t total_samples_;
-
-  // Deleted by calling Finalize() on the object.
-  AudioRecorderImpl* recorder_;
-
-  std::string received_samples_;
-
-  scoped_ptr<base::RunLoop> run_loop_;
-  content::TestBrowserThreadBundle thread_bundle_;
-};
-
-// TODO(rkc): These tests are broken on all platforms.
-// On Windows and Mac, we cannot use non-OS params. The tests need to be
-// rewritten to use the params provided to us by the audio manager
-// rather than setting our own params.
-// On Linux, there is a memory leak in the audio code during initialization.
-#define MAYBE_BasicRecordAndStop DISABLED_BasicRecordAndStop
-#define MAYBE_OutOfOrderRecordAndStopMultiple DISABLED_OutOfOrderRecordAndStopMultiple
-#define MAYBE_RecordingEndToEnd DISABLED_RecordingEndToEnd
-
-TEST_F(AudioRecorderTest, MAYBE_BasicRecordAndStop) {
-  CreateSimpleRecorder();
-
-  recorder_->Record();
-  EXPECT_TRUE(IsRecording());
-  recorder_->Stop();
-  EXPECT_FALSE(IsRecording());
-  recorder_->Record();
-
-  EXPECT_TRUE(IsRecording());
-  recorder_->Stop();
-  EXPECT_FALSE(IsRecording());
-  recorder_->Record();
-
-  EXPECT_TRUE(IsRecording());
-  recorder_->Stop();
-  EXPECT_FALSE(IsRecording());
-
-  DeleteRecorder();
-}
-
-TEST_F(AudioRecorderTest, MAYBE_OutOfOrderRecordAndStopMultiple) {
-  CreateSimpleRecorder();
-
-  recorder_->Stop();
-  recorder_->Stop();
-  recorder_->Stop();
-  EXPECT_FALSE(IsRecording());
-
-  recorder_->Record();
-  recorder_->Record();
-  EXPECT_TRUE(IsRecording());
-
-  recorder_->Stop();
-  recorder_->Stop();
-  EXPECT_FALSE(IsRecording());
-
-  DeleteRecorder();
-}
-
-TEST_F(AudioRecorderTest, MAYBE_RecordingEndToEnd) {
-  const int kNumSamples = 48000 * 3;
-  CreateRecorder(
-      kDefaultChannels, kDefaultSampleRate, kDefaultBitsPerSample, kNumSamples);
-
-  RecordAndVerifySamples();
-
-  DeleteRecorder();
-}
-
-// TODO(rkc): Add tests with recording different sample rates.
-
-}  // namespace copresence