chrome/browser/media/chrome_webrtc_audio_quality_browsertest.cc

   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 <ctime>
   6
   7 #include "base/command_line.h"
   8 #include "base/file_util.h"
   9 #include "base/path_service.h"
  10 #include "base/process/launch.h"
  11 #include "base/scoped_native_library.h"
  12 #include "base/strings/stringprintf.h"
  13 #include "chrome/browser/media/webrtc_browsertest_base.h"
  14 #include "chrome/browser/media/webrtc_browsertest_common.h"
  15 #include "chrome/browser/profiles/profile.h"
  16 #include "chrome/browser/ui/browser.h"
  17 #include "chrome/browser/ui/browser_tabstrip.h"
  18 #include "chrome/browser/ui/tabs/tab_strip_model.h"
  19 #include "chrome/common/chrome_paths.h"
  20 #include "chrome/common/chrome_switches.h"
  21 #include "chrome/test/base/ui_test_utils.h"
  22 #include "content/public/test/browser_test_utils.h"
  23 #include "media/base/media_switches.h"
  24 #include "net/test/embedded_test_server/embedded_test_server.h"
  25 #include "testing/perf/perf_test.h"
  26
  27 // These are relative to the reference file dir defined by
  28 // webrtc_browsertest_common.h (i.e. chrome/test/data/webrtc/resources).
  29 static const base::FilePath::CharType kReferenceFile[] =
  30 #if defined (OS_WIN)
  31     FILE_PATH_LITERAL("human-voice-win.wav");
  32 #else
  33     FILE_PATH_LITERAL("human-voice-linux.wav");
  34 #endif
  35
  36 // The javascript will load the reference file relative to its location,
  37 // which is in /webrtc on the web server. The files we are looking for are in
  38 // webrtc/resources in the chrome/test/data folder.
  39 static const char kReferenceFileRelativeUrl[] =
  40 #if defined (OS_WIN)
  41     "resources/human-voice-win.wav";
  42 #else
  43     "resources/human-voice-linux.wav";
  44 #endif
  45
  46 static const char kMainWebrtcTestHtmlPage[] =
  47     "/webrtc/webrtc_audio_quality_test.html";
  48
  49 // Test we can set up a WebRTC call and play audio through it.
  50 //
  51 // You must have the src-internal solution in your .gclient to put the required
  52 // pyauto_private directory into chrome/test/data/.
  53 //
  54 // This test will only work on machines that have been configured to record
  55 // their own input.
  56 //
  57 // On Linux:
  58 // 1. # sudo apt-get install pavucontrol
  59 // 2. For the user who will run the test: # pavucontrol
  60 // 3. In a separate terminal, # arecord dummy
  61 // 4. In pavucontrol, go to the recording tab.
  62 // 5. For the ALSA plug-in [aplay]: ALSA Capture from, change from <x> to
  63 //    <Monitor of x>, where x is whatever your primary sound device is called.
  64 // 6. Try launching chrome as the target user on the target machine, try
  65 //    playing, say, a YouTube video, and record with # arecord -f dat tmp.dat.
  66 //    Verify the recording with aplay (should have recorded what you played
  67 //    from chrome).
  68 //
  69 // Note: the volume for ALL your input devices will be forced to 100% by
  70 //       running this test on Linux.
  71 //
  72 // On Windows 7:
  73 // 1. Control panel > Sound > Manage audio devices.
  74 // 2. In the recording tab, right-click in an empty space in the pane with the
  75 //    devices. Tick 'show disabled devices'.
  76 // 3. You should see a 'stero mix' device - this is what your speakers output.
  77 //    Right click > Properties.
  78 // 4. In the Listen tab for the mix device, check the 'listen to this device'
  79 //    checkbox. Ensure the mix device is the default recording device.
  80 // 5. Launch chrome and try playing a video with sound. You should see
  81 //    in the volume meter for the mix device. Configure the mix device to have
  82 //    50 / 100 in level. Also go into the playback tab, right-click Speakers,
  83 //    and set that level to 50 / 100. Otherwise you will get distortion in
  84 //    the recording.
  85 class WebRtcAudioQualityBrowserTest : public WebRtcTestBase {
  86  public:
  87   WebRtcAudioQualityBrowserTest() {}
  88   virtual void SetUpInProcessBrowserTestFixture() OVERRIDE {
  89     DetectErrorsInJavaScript();  // Look for errors in our rather complex js.
  90   }
  91
  92   virtual void SetUpCommandLine(CommandLine* command_line) OVERRIDE {
  93     // This test expects real device handling and requires a real webcam / audio
  94     // device; it will not work with fake devices.
  95     EXPECT_FALSE(command_line->HasSwitch(
  96         switches::kUseFakeDeviceForMediaStream));
  97     EXPECT_FALSE(command_line->HasSwitch(
  98         switches::kUseFakeUIForMediaStream));
  99   }
 100
 101   void AddAudioFile(const std::string& input_file_relative_url,
 102                     content::WebContents* tab_contents) {
 103     EXPECT_EQ("ok-added", ExecuteJavascript(
 104         "addAudioFile('" + input_file_relative_url + "')", tab_contents));
 105   }
 106
 107   void PlayAudioFile(content::WebContents* tab_contents) {
 108     EXPECT_EQ("ok-playing", ExecuteJavascript("playAudioFile()", tab_contents));
 109   }
 110
 111   base::FilePath CreateTemporaryWaveFile() {
 112     base::FilePath filename;
 113     EXPECT_TRUE(base::CreateTemporaryFile(&filename));
 114     base::FilePath wav_filename =
 115         filename.AddExtension(FILE_PATH_LITERAL(".wav"));
 116     EXPECT_TRUE(base::Move(filename, wav_filename));
 117     return wav_filename;
 118   }
 119 };
 120
 121 class AudioRecorder {
 122  public:
 123   AudioRecorder(): recording_application_(base::kNullProcessHandle) {}
 124   ~AudioRecorder() {}
 125
 126   // Starts the recording program for the specified duration. Returns true
 127   // on success.
 128   bool StartRecording(int duration_sec, const base::FilePath& output_file,
 129                       bool mono) {
 130     EXPECT_EQ(base::kNullProcessHandle, recording_application_)
 131         << "Tried to record, but is already recording.";
 132
 133     CommandLine command_line(CommandLine::NO_PROGRAM);
 134 #if defined(OS_WIN)
 135     // This disable is required to run SoundRecorder.exe on 64-bit Windows
 136     // from a 32-bit binary. We need to load the wow64 disable function from
 137     // the DLL since it doesn't exist on Windows XP.
 138     // TODO(phoglund): find some cleaner solution than using SoundRecorder.exe.
 139     base::ScopedNativeLibrary kernel32_lib(base::FilePath(L"kernel32"));
 140     if (kernel32_lib.is_valid()) {
 141       typedef BOOL (WINAPI* Wow64DisableWow64FSRedirection)(PVOID*);
 142       Wow64DisableWow64FSRedirection wow_64_disable_wow_64_fs_redirection;
 143       wow_64_disable_wow_64_fs_redirection =
 144           reinterpret_cast<Wow64DisableWow64FSRedirection>(
 145               kernel32_lib.GetFunctionPointer(
 146                   "Wow64DisableWow64FsRedirection"));
 147       if (wow_64_disable_wow_64_fs_redirection != NULL) {
 148         PVOID* ignored = NULL;
 149         wow_64_disable_wow_64_fs_redirection(ignored);
 150       }
 151     }
 152
 153     char duration_in_hms[128] = {0};
 154     struct tm duration_tm = {0};
 155     duration_tm.tm_sec = duration_sec;
 156     EXPECT_NE(0u, strftime(duration_in_hms, arraysize(duration_in_hms),
 157                            "%H:%M:%S", &duration_tm));
 158
 159     command_line.SetProgram(
 160         base::FilePath(FILE_PATH_LITERAL("SoundRecorder.exe")));
 161     command_line.AppendArg("/FILE");
 162     command_line.AppendArgPath(output_file);
 163     command_line.AppendArg("/DURATION");
 164     command_line.AppendArg(duration_in_hms);
 165 #else
 166     int num_channels = mono ? 1 : 2;
 167     command_line.SetProgram(base::FilePath("arecord"));
 168     command_line.AppendArg("-d");
 169     command_line.AppendArg(base::StringPrintf("%d", duration_sec));
 170     command_line.AppendArg("-f");
 171     command_line.AppendArg("dat");
 172     command_line.AppendArg("-c");
 173     command_line.AppendArg(base::StringPrintf("%d", num_channels));
 174     command_line.AppendArgPath(output_file);
 175 #endif
 176
 177     VLOG(0) << "Running " << command_line.GetCommandLineString();
 178     return base::LaunchProcess(command_line, base::LaunchOptions(),
 179                                &recording_application_);
 180   }
 181
 182   // Joins the recording program. Returns true on success.
 183   bool WaitForRecordingToEnd() {
 184     int exit_code = -1;
 185     base::WaitForExitCode(recording_application_, &exit_code);
 186     return exit_code == 0;
 187   }
 188  private:
 189   base::ProcessHandle recording_application_;
 190 };
 191
 192 bool ForceMicrophoneVolumeTo100Percent() {
 193 #if defined(OS_WIN)
 194   CommandLine command_line(test::GetReferenceFilesDir().Append(
 195       FILE_PATH_LITERAL("force_mic_volume_max.exe")));
 196   VLOG(0) << "Running " << command_line.GetCommandLineString();
 197   std::string result;
 198   if (!base::GetAppOutput(command_line, &result)) {
 199     LOG(ERROR) << "Failed to set source volume: output was " << result;
 200     return false;
 201   }
 202 #else
 203   // Just force the volume of, say the first 5 devices. A machine will rarely
 204   // have more input sources than that. This is way easier than finding the
 205   // input device we happen to be using.
 206   for (int device_index = 0; device_index < 5; ++device_index) {
 207     std::string result;
 208     const std::string kHundredPercentVolume = "65536";
 209     CommandLine command_line(base::FilePath(FILE_PATH_LITERAL("pacmd")));
 210     command_line.AppendArg("set-source-volume");
 211     command_line.AppendArg(base::StringPrintf("%d", device_index));
 212     command_line.AppendArg(kHundredPercentVolume);
 213     VLOG(0) << "Running " << command_line.GetCommandLineString();
 214     if (!base::GetAppOutput(command_line, &result)) {
 215       LOG(ERROR) << "Failed to set source volume: output was " << result;
 216       return false;
 217     }
 218   }
 219 #endif
 220   return true;
 221 }
 222
 223 // Removes silence from beginning and end of the |input_audio_file| and writes
 224 // the result to the |output_audio_file|. Returns true on success.
 225 bool RemoveSilence(const base::FilePath& input_file,
 226                    const base::FilePath& output_file) {
 227   // SOX documentation for silence command: http://sox.sourceforge.net/sox.html
 228   // To remove the silence from both beginning and end of the audio file, we
 229   // call sox silence command twice: once on normal file and again on its
 230   // reverse, then we reverse the final output.
 231   // Silence parameters are (in sequence):
 232   // ABOVE_PERIODS: The period for which silence occurs. Value 1 is used for
 233   //                 silence at beginning of audio.
 234   // DURATION: the amount of time in seconds that non-silence must be detected
 235   //           before sox stops trimming audio.
 236   // THRESHOLD: value used to indicate what sample value is treates as silence.
 237   const char* kAbovePeriods = "1";
 238   const char* kDuration = "2";
 239   const char* kTreshold = "5%";
 240
 241 #if defined(OS_WIN)
 242   CommandLine command_line(test::GetReferenceFilesDir().Append(
 243       FILE_PATH_LITERAL("sox.exe")));
 244 #else
 245   CommandLine command_line(base::FilePath(FILE_PATH_LITERAL("sox")));
 246 #endif
 247   command_line.AppendArgPath(input_file);
 248   command_line.AppendArgPath(output_file);
 249   command_line.AppendArg("silence");
 250   command_line.AppendArg(kAbovePeriods);
 251   command_line.AppendArg(kDuration);
 252   command_line.AppendArg(kTreshold);
 253   command_line.AppendArg("reverse");
 254   command_line.AppendArg("silence");
 255   command_line.AppendArg(kAbovePeriods);
 256   command_line.AppendArg(kDuration);
 257   command_line.AppendArg(kTreshold);
 258   command_line.AppendArg("reverse");
 259
 260   VLOG(0) << "Running " << command_line.GetCommandLineString();
 261   std::string result;
 262   bool ok = base::GetAppOutput(command_line, &result);
 263   VLOG(0) << "Output was:\n\n" << result;
 264   return ok;
 265 }
 266
 267 bool CanParseAsFloat(const std::string& value) {
 268   return atof(value.c_str()) != 0 || value == "0";
 269 }
 270
 271 // Runs PESQ to compare |reference_file| to a |actual_file|. The |sample_rate|
 272 // can be either 16000 or 8000.
 273 //
 274 // PESQ is only mono-aware, so the files should preferably be recorded in mono.
 275 // Furthermore it expects the file to be 16 rather than 32 bits, even though
 276 // 32 bits might work. The audio bandwidth of the two files should be the same
 277 // e.g. don't compare a 32 kHz file to a 8 kHz file.
 278 //
 279 // The raw score in MOS is written to |raw_mos|, whereas the MOS-LQO score is
 280 // written to mos_lqo. The scores are returned as floats in string form (e.g.
 281 // "3.145", etc). Returns true on success.
 282 bool RunPesq(const base::FilePath& reference_file,
 283              const base::FilePath& actual_file,
 284              int sample_rate, std::string* raw_mos, std::string* mos_lqo) {
 285   // PESQ will break if the paths are too long (!).
 286   EXPECT_LT(reference_file.value().length(), 128u);
 287   EXPECT_LT(actual_file.value().length(), 128u);
 288
 289 #if defined(OS_WIN)
 290   base::FilePath pesq_path =
 291       test::GetReferenceFilesDir().Append(FILE_PATH_LITERAL("pesq.exe"));
 292 #else
 293   base::FilePath pesq_path =
 294       test::GetReferenceFilesDir().Append(FILE_PATH_LITERAL("pesq"));
 295 #endif
 296
 297   if (!base::PathExists(pesq_path)) {
 298     LOG(ERROR) << "Missing PESQ binary in " << pesq_path.value();
 299     return false;
 300   }
 301
 302   CommandLine command_line(pesq_path);
 303   command_line.AppendArg(base::StringPrintf("+%d", sample_rate));
 304   command_line.AppendArgPath(reference_file);
 305   command_line.AppendArgPath(actual_file);
 306
 307   VLOG(0) << "Running " << command_line.GetCommandLineString();
 308   std::string result;
 309   if (!base::GetAppOutput(command_line, &result)) {
 310     LOG(ERROR) << "Failed to run PESQ.";
 311     return false;
 312   }
 313   VLOG(0) << "Output was:\n\n" << result;
 314
 315   const std::string result_anchor = "Prediction (Raw MOS, MOS-LQO):  = ";
 316   std::size_t anchor_pos = result.find(result_anchor);
 317   if (anchor_pos == std::string::npos) {
 318     LOG(ERROR) << "PESQ was not able to compute a score; we probably recorded "
 319         << "only silence.";
 320     return false;
 321   }
 322
 323   // There are two tab-separated numbers on the format x.xxx, e.g. 5 chars each.
 324   std::size_t first_number_pos = anchor_pos + result_anchor.length();
 325   *raw_mos = result.substr(first_number_pos, 5);
 326   EXPECT_TRUE(CanParseAsFloat(*raw_mos)) << "Failed to parse raw MOS number.";
 327   *mos_lqo = result.substr(first_number_pos + 5 + 1, 5);
 328   EXPECT_TRUE(CanParseAsFloat(*mos_lqo)) << "Failed to parse MOS LQO number.";
 329
 330   return true;
 331 }
 332
 333 #if defined(OS_LINUX) || defined(OS_WIN)
 334 // Only implemented on Linux and Windows for now.
 335 #define MAYBE_MANUAL_TestAudioQuality MANUAL_TestAudioQuality
 336 #else
 337 #define MAYBE_MANUAL_TestAudioQuality DISABLED_MANUAL_TestAudioQuality
 338 #endif
 339
 340 IN_PROC_BROWSER_TEST_F(WebRtcAudioQualityBrowserTest,
 341                        MAYBE_MANUAL_TestAudioQuality) {
 342   if (OnWinXp()) {
 343     LOG(ERROR) << "This test is not implemented for Windows XP.";
 344     return;
 345   }
 346   if (OnWin8()) {
 347     // http://crbug.com/379798.
 348     LOG(ERROR) << "Temporarily disabled for Win 8.";
 349     return;
 350   }
 351   ASSERT_TRUE(test::HasReferenceFilesInCheckout());
 352   ASSERT_TRUE(embedded_test_server()->InitializeAndWaitUntilReady());
 353
 354   ASSERT_TRUE(ForceMicrophoneVolumeTo100Percent());
 355
 356   ui_test_utils::NavigateToURL(
 357       browser(), embedded_test_server()->GetURL(kMainWebrtcTestHtmlPage));
 358   content::WebContents* left_tab =
 359       browser()->tab_strip_model()->GetActiveWebContents();
 360
 361   chrome::AddTabAt(browser(), GURL(), -1, true);
 362   content::WebContents* right_tab =
 363       browser()->tab_strip_model()->GetActiveWebContents();
 364   ui_test_utils::NavigateToURL(
 365       browser(), embedded_test_server()->GetURL(kMainWebrtcTestHtmlPage));
 366
 367   // Prepare the peer connections manually in this test since we don't add
 368   // getUserMedia-derived media streams in this test like the other tests.
 369   EXPECT_EQ("ok-peerconnection-created",
 370             ExecuteJavascript("preparePeerConnection()", left_tab));
 371   EXPECT_EQ("ok-peerconnection-created",
 372             ExecuteJavascript("preparePeerConnection()", right_tab));
 373
 374   AddAudioFile(kReferenceFileRelativeUrl, left_tab);
 375
 376   NegotiateCall(left_tab, right_tab);
 377
 378   // Note: the media flow isn't necessarily established on the connection just
 379   // because the ready state is ok on both sides. We sleep a bit between call
 380   // establishment and playing to avoid cutting of the beginning of the audio
 381   // file.
 382   test::SleepInJavascript(left_tab, 2000);
 383
 384   base::FilePath recording = CreateTemporaryWaveFile();
 385
 386   // Note: the sound clip is about 10 seconds: record for 15 seconds to get some
 387   // safety margins on each side.
 388   AudioRecorder recorder;
 389   static int kRecordingTimeSeconds = 15;
 390   ASSERT_TRUE(recorder.StartRecording(kRecordingTimeSeconds, recording, true));
 391
 392   PlayAudioFile(left_tab);
 393
 394   ASSERT_TRUE(recorder.WaitForRecordingToEnd());
 395   VLOG(0) << "Done recording to " << recording.value() << std::endl;
 396
 397   HangUp(left_tab);
 398
 399   base::FilePath trimmed_recording = CreateTemporaryWaveFile();
 400
 401   ASSERT_TRUE(RemoveSilence(recording, trimmed_recording));
 402   VLOG(0) << "Trimmed silence: " << trimmed_recording.value() << std::endl;
 403
 404   std::string raw_mos;
 405   std::string mos_lqo;
 406   base::FilePath reference_file_in_test_dir =
 407       test::GetReferenceFilesDir().Append(kReferenceFile);
 408   ASSERT_TRUE(RunPesq(reference_file_in_test_dir, trimmed_recording, 16000,
 409                       &raw_mos, &mos_lqo));
 410
 411   perf_test::PrintResult("audio_pesq", "", "raw_mos", raw_mos, "score", true);
 412   perf_test::PrintResult("audio_pesq", "", "mos_lqo", mos_lqo, "score", true);
 413
 414   EXPECT_TRUE(base::DeleteFile(recording, false));
 415   EXPECT_TRUE(base::DeleteFile(trimmed_recording, false));
 416 }