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/files/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 #elif defined (OS_MACOSX)
  33     FILE_PATH_LITERAL("human-voice-mac.wav");
  34 #else
  35     FILE_PATH_LITERAL("human-voice-linux.wav");
  36 #endif
  37
  38 // The javascript will load the reference file relative to its location,
  39 // which is in /webrtc on the web server. The files we are looking for are in
  40 // webrtc/resources in the chrome/test/data folder.
  41 static const char kReferenceFileRelativeUrl[] =
  42 #if defined (OS_WIN)
  43     "resources/human-voice-win.wav";
  44 #elif defined (OS_MACOSX)
  45     "resources/human-voice-mac.wav";
  46 #else
  47     "resources/human-voice-linux.wav";
  48 #endif
  49
  50 static const char kMainWebrtcTestHtmlPage[] =
  51     "/webrtc/webrtc_audio_quality_test.html";
  52
  53 // Test we can set up a WebRTC call and play audio through it.
  54 //
  55 // If you're not a googler and want to run this test, you need to provide a
  56 // pesq binary for your platform (and sox.exe on windows). Read more on how
  57 // resources are managed in chrome/test/data/webrtc/resources/README.
  58 //
  59 // This test will only work on machines that have been configured to record
  60 // their own input.
  61 //
  62 // On Linux:
  63 // 1. # sudo apt-get install pavucontrol sox
  64 // 2. For the user who will run the test: # pavucontrol
  65 // 3. In a separate terminal, # arecord dummy
  66 // 4. In pavucontrol, go to the recording tab.
  67 // 5. For the ALSA plug-in [aplay]: ALSA Capture from, change from <x> to
  68 //    <Monitor of x>, where x is whatever your primary sound device is called.
  69 // 6. Try launching chrome as the target user on the target machine, try
  70 //    playing, say, a YouTube video, and record with # arecord -f dat tmp.dat.
  71 //    Verify the recording with aplay (should have recorded what you played
  72 //    from chrome).
  73 //
  74 // Note: the volume for ALL your input devices will be forced to 100% by
  75 //       running this test on Linux.
  76 //
  77 // On Mac:
  78 // 1. Get SoundFlower: http://rogueamoeba.com/freebies/soundflower/download.php
  79 // 2. Install it + reboot.
  80 // 3. Install MacPorts (http://www.macports.org/).
  81 // 4. Install sox: sudo port install sox.
  82 // 5. In Sound Preferences, set both input and output to Soundflower (2ch).
  83 //    Note: You will no longer hear audio on this machine, and it will no
  84 //    longer use any built-in mics.
  85 // 6. Ensure the output volume is max and the input volume at about 20%.
  86 // 7. Try launching chrome as the target user on the target machine, try
  87 //    playing, say, a YouTube video, and record with 'rec test.wav trim 0 5'.
  88 //    Stop the video in chrome and try playing back the file; you should hear
  89 //    a recording of the video (note; if you play back on the target machine
  90 //    you must revert the changes in step 3 first).
  91 //
  92 // On Windows 7:
  93 // 1. Control panel > Sound > Manage audio devices.
  94 // 2. In the recording tab, right-click in an empty space in the pane with the
  95 //    devices. Tick 'show disabled devices'.
  96 // 3. You should see a 'stero mix' device - this is what your speakers output.
  97 //    Right click > Properties.
  98 // 4. In the Listen tab for the mix device, check the 'listen to this device'
  99 //    checkbox. Ensure the mix device is the default recording device.
 100 // 5. Launch chrome and try playing a video with sound. You should see
 101 //    in the volume meter for the mix device. Configure the mix device to have
 102 //    50 / 100 in level. Also go into the playback tab, right-click Speakers,
 103 //    and set that level to 50 / 100. Otherwise you will get distortion in
 104 //    the recording.
 105 class WebRtcAudioQualityBrowserTest : public WebRtcTestBase {
 106  public:
 107   WebRtcAudioQualityBrowserTest() {}
 108   virtual void SetUpInProcessBrowserTestFixture() OVERRIDE {
 109     DetectErrorsInJavaScript();  // Look for errors in our rather complex js.
 110   }
 111
 112   virtual void SetUpCommandLine(CommandLine* command_line) OVERRIDE {
 113     // This test expects real device handling and requires a real webcam / audio
 114     // device; it will not work with fake devices.
 115     EXPECT_FALSE(command_line->HasSwitch(
 116         switches::kUseFakeDeviceForMediaStream));
 117     EXPECT_FALSE(command_line->HasSwitch(
 118         switches::kUseFakeUIForMediaStream));
 119   }
 120
 121   void AddAudioFile(const std::string& input_file_relative_url,
 122                     content::WebContents* tab_contents) {
 123     EXPECT_EQ("ok-added", ExecuteJavascript(
 124         "addAudioFile('" + input_file_relative_url + "')", tab_contents));
 125   }
 126
 127   void PlayAudioFile(content::WebContents* tab_contents) {
 128     EXPECT_EQ("ok-playing", ExecuteJavascript("playAudioFile()", tab_contents));
 129   }
 130
 131   base::FilePath CreateTemporaryWaveFile() {
 132     base::FilePath filename;
 133     EXPECT_TRUE(base::CreateTemporaryFile(&filename));
 134     base::FilePath wav_filename =
 135         filename.AddExtension(FILE_PATH_LITERAL(".wav"));
 136     EXPECT_TRUE(base::Move(filename, wav_filename));
 137     return wav_filename;
 138   }
 139 };
 140
 141 class AudioRecorder {
 142  public:
 143   AudioRecorder(): recording_application_(base::kNullProcessHandle) {}
 144   ~AudioRecorder() {}
 145
 146   // Starts the recording program for the specified duration. Returns true
 147   // on success.
 148   bool StartRecording(int duration_sec, const base::FilePath& output_file,
 149                       bool mono) {
 150     EXPECT_EQ(base::kNullProcessHandle, recording_application_)
 151         << "Tried to record, but is already recording.";
 152
 153     CommandLine command_line(CommandLine::NO_PROGRAM);
 154 #if defined(OS_WIN)
 155     // This disable is required to run SoundRecorder.exe on 64-bit Windows
 156     // from a 32-bit binary. We need to load the wow64 disable function from
 157     // the DLL since it doesn't exist on Windows XP.
 158     // TODO(phoglund): find some cleaner solution than using SoundRecorder.exe.
 159     base::ScopedNativeLibrary kernel32_lib(base::FilePath(L"kernel32"));
 160     if (kernel32_lib.is_valid()) {
 161       typedef BOOL (WINAPI* Wow64DisableWow64FSRedirection)(PVOID*);
 162       Wow64DisableWow64FSRedirection wow_64_disable_wow_64_fs_redirection;
 163       wow_64_disable_wow_64_fs_redirection =
 164           reinterpret_cast<Wow64DisableWow64FSRedirection>(
 165               kernel32_lib.GetFunctionPointer(
 166                   "Wow64DisableWow64FsRedirection"));
 167       if (wow_64_disable_wow_64_fs_redirection != NULL) {
 168         PVOID* ignored = NULL;
 169         wow_64_disable_wow_64_fs_redirection(ignored);
 170       }
 171     }
 172
 173     char duration_in_hms[128] = {0};
 174     struct tm duration_tm = {0};
 175     duration_tm.tm_sec = duration_sec;
 176     EXPECT_NE(0u, strftime(duration_in_hms, arraysize(duration_in_hms),
 177                            "%H:%M:%S", &duration_tm));
 178
 179     command_line.SetProgram(
 180         base::FilePath(FILE_PATH_LITERAL("SoundRecorder.exe")));
 181     command_line.AppendArg("/FILE");
 182     command_line.AppendArgPath(output_file);
 183     command_line.AppendArg("/DURATION");
 184     command_line.AppendArg(duration_in_hms);
 185 #elif defined(OS_MACOSX)
 186     command_line.SetProgram(base::FilePath("rec"));
 187     command_line.AppendArg("-b");
 188     command_line.AppendArg("16");
 189     command_line.AppendArg("-q");
 190     command_line.AppendArgPath(output_file);
 191     command_line.AppendArg("trim");
 192     command_line.AppendArg("0");
 193     command_line.AppendArg(base::StringPrintf("%d", duration_sec));
 194     command_line.AppendArg("rate");
 195     command_line.AppendArg("16k");
 196     if (mono) {
 197       command_line.AppendArg("remix");
 198       command_line.AppendArg("-");
 199     }
 200 #else
 201     int num_channels = mono ? 1 : 2;
 202     command_line.SetProgram(base::FilePath("arecord"));
 203     command_line.AppendArg("-d");
 204     command_line.AppendArg(base::StringPrintf("%d", duration_sec));
 205     command_line.AppendArg("-f");
 206     command_line.AppendArg("dat");
 207     command_line.AppendArg("-c");
 208     command_line.AppendArg(base::StringPrintf("%d", num_channels));
 209     command_line.AppendArgPath(output_file);
 210 #endif
 211
 212     VLOG(0) << "Running " << command_line.GetCommandLineString();
 213     return base::LaunchProcess(command_line, base::LaunchOptions(),
 214                                &recording_application_);
 215   }
 216
 217   // Joins the recording program. Returns true on success.
 218   bool WaitForRecordingToEnd() {
 219     int exit_code = -1;
 220     base::WaitForExitCode(recording_application_, &exit_code);
 221     return exit_code == 0;
 222   }
 223  private:
 224   base::ProcessHandle recording_application_;
 225 };
 226
 227 bool ForceMicrophoneVolumeTo100Percent() {
 228 #if defined(OS_WIN)
 229   // Note: the force binary isn't in tools since it's one of our own.
 230   CommandLine command_line(test::GetReferenceFilesDir().Append(
 231       FILE_PATH_LITERAL("force_mic_volume_max.exe")));
 232   VLOG(0) << "Running " << command_line.GetCommandLineString();
 233   std::string result;
 234   if (!base::GetAppOutput(command_line, &result)) {
 235     LOG(ERROR) << "Failed to set source volume: output was " << result;
 236     return false;
 237   }
 238 #elif defined(OS_MACOSX)
 239   // TODO(phoglund): implement.
 240 #else
 241   // Just force the volume of, say the first 5 devices. A machine will rarely
 242   // have more input sources than that. This is way easier than finding the
 243   // input device we happen to be using.
 244   for (int device_index = 0; device_index < 5; ++device_index) {
 245     std::string result;
 246     const std::string kHundredPercentVolume = "65536";
 247     CommandLine command_line(base::FilePath(FILE_PATH_LITERAL("pacmd")));
 248     command_line.AppendArg("set-source-volume");
 249     command_line.AppendArg(base::StringPrintf("%d", device_index));
 250     command_line.AppendArg(kHundredPercentVolume);
 251     VLOG(0) << "Running " << command_line.GetCommandLineString();
 252     if (!base::GetAppOutput(command_line, &result)) {
 253       LOG(ERROR) << "Failed to set source volume: output was " << result;
 254       return false;
 255     }
 256   }
 257 #endif
 258   return true;
 259 }
 260
 261 // Removes silence from beginning and end of the |input_audio_file| and writes
 262 // the result to the |output_audio_file|. Returns true on success.
 263 bool RemoveSilence(const base::FilePath& input_file,
 264                    const base::FilePath& output_file) {
 265   // SOX documentation for silence command: http://sox.sourceforge.net/sox.html
 266   // To remove the silence from both beginning and end of the audio file, we
 267   // call sox silence command twice: once on normal file and again on its
 268   // reverse, then we reverse the final output.
 269   // Silence parameters are (in sequence):
 270   // ABOVE_PERIODS: The period for which silence occurs. Value 1 is used for
 271   //                 silence at beginning of audio.
 272   // DURATION: the amount of time in seconds that non-silence must be detected
 273   //           before sox stops trimming audio.
 274   // THRESHOLD: value used to indicate what sample value is treates as silence.
 275   const char* kAbovePeriods = "1";
 276   const char* kDuration = "2";
 277   const char* kTreshold = "5%";
 278
 279 #if defined(OS_WIN)
 280   base::FilePath sox_path = test::GetReferenceFilesDir().Append(
 281       FILE_PATH_LITERAL("tools/sox.exe"));
 282   if (!base::PathExists(sox_path)) {
 283     LOG(ERROR) << "Missing sox.exe binary in " << sox_path.value()
 284                << "; you may have to provide this binary yourself.";
 285     return false;
 286   }
 287   CommandLine command_line(sox_path);
 288 #else
 289   CommandLine command_line(base::FilePath(FILE_PATH_LITERAL("sox")));
 290 #endif
 291   command_line.AppendArgPath(input_file);
 292   command_line.AppendArgPath(output_file);
 293   command_line.AppendArg("silence");
 294   command_line.AppendArg(kAbovePeriods);
 295   command_line.AppendArg(kDuration);
 296   command_line.AppendArg(kTreshold);
 297   command_line.AppendArg("reverse");
 298   command_line.AppendArg("silence");
 299   command_line.AppendArg(kAbovePeriods);
 300   command_line.AppendArg(kDuration);
 301   command_line.AppendArg(kTreshold);
 302   command_line.AppendArg("reverse");
 303
 304   VLOG(0) << "Running " << command_line.GetCommandLineString();
 305   std::string result;
 306   bool ok = base::GetAppOutput(command_line, &result);
 307   VLOG(0) << "Output was:\n\n" << result;
 308   return ok;
 309 }
 310
 311 bool CanParseAsFloat(const std::string& value) {
 312   return atof(value.c_str()) != 0 || value == "0";
 313 }
 314
 315 // Runs PESQ to compare |reference_file| to a |actual_file|. The |sample_rate|
 316 // can be either 16000 or 8000.
 317 //
 318 // PESQ is only mono-aware, so the files should preferably be recorded in mono.
 319 // Furthermore it expects the file to be 16 rather than 32 bits, even though
 320 // 32 bits might work. The audio bandwidth of the two files should be the same
 321 // e.g. don't compare a 32 kHz file to a 8 kHz file.
 322 //
 323 // The raw score in MOS is written to |raw_mos|, whereas the MOS-LQO score is
 324 // written to mos_lqo. The scores are returned as floats in string form (e.g.
 325 // "3.145", etc). Returns true on success.
 326 bool RunPesq(const base::FilePath& reference_file,
 327              const base::FilePath& actual_file,
 328              int sample_rate, std::string* raw_mos, std::string* mos_lqo) {
 329   // PESQ will break if the paths are too long (!).
 330   EXPECT_LT(reference_file.value().length(), 128u);
 331   EXPECT_LT(actual_file.value().length(), 128u);
 332
 333 #if defined(OS_WIN)
 334   base::FilePath pesq_path =
 335       test::GetReferenceFilesDir().Append(FILE_PATH_LITERAL("tools/pesq.exe"));
 336 #elif defined(OS_MACOSX)
 337   base::FilePath pesq_path =
 338       test::GetReferenceFilesDir().Append(FILE_PATH_LITERAL("tools/pesq_mac"));
 339 #else
 340   base::FilePath pesq_path =
 341       test::GetReferenceFilesDir().Append(FILE_PATH_LITERAL("tools/pesq"));
 342 #endif
 343
 344   if (!base::PathExists(pesq_path)) {
 345     LOG(ERROR) << "Missing PESQ binary in " << pesq_path.value()
 346                << "; you may have to provide this binary yourself.";
 347     return false;
 348   }
 349
 350   CommandLine command_line(pesq_path);
 351   command_line.AppendArg(base::StringPrintf("+%d", sample_rate));
 352   command_line.AppendArgPath(reference_file);
 353   command_line.AppendArgPath(actual_file);
 354
 355   VLOG(0) << "Running " << command_line.GetCommandLineString();
 356   std::string result;
 357   if (!base::GetAppOutput(command_line, &result)) {
 358     LOG(ERROR) << "Failed to run PESQ.";
 359     return false;
 360   }
 361   VLOG(0) << "Output was:\n\n" << result;
 362
 363   const std::string result_anchor = "Prediction (Raw MOS, MOS-LQO):  = ";
 364   std::size_t anchor_pos = result.find(result_anchor);
 365   if (anchor_pos == std::string::npos) {
 366     LOG(ERROR) << "PESQ was not able to compute a score; we probably recorded "
 367         << "only silence.";
 368     return false;
 369   }
 370
 371   // There are two tab-separated numbers on the format x.xxx, e.g. 5 chars each.
 372   std::size_t first_number_pos = anchor_pos + result_anchor.length();
 373   *raw_mos = result.substr(first_number_pos, 5);
 374   EXPECT_TRUE(CanParseAsFloat(*raw_mos)) << "Failed to parse raw MOS number.";
 375   *mos_lqo = result.substr(first_number_pos + 5 + 1, 5);
 376   EXPECT_TRUE(CanParseAsFloat(*mos_lqo)) << "Failed to parse MOS LQO number.";
 377
 378   return true;
 379 }
 380
 381 #if defined(OS_LINUX) || defined(OS_WIN)
 382 // Only implemented on Linux and Windows for now.
 383 #define MAYBE_MANUAL_TestAudioQuality MANUAL_TestAudioQuality
 384 #else
 385 #define MAYBE_MANUAL_TestAudioQuality DISABLED_MANUAL_TestAudioQuality
 386 #endif
 387
 388 IN_PROC_BROWSER_TEST_F(WebRtcAudioQualityBrowserTest,
 389                        MAYBE_MANUAL_TestAudioQuality) {
 390   if (OnWinXp()) {
 391     LOG(ERROR) << "This test is not implemented for Windows XP.";
 392     return;
 393   }
 394   if (OnWin8()) {
 395     // http://crbug.com/379798.
 396     LOG(ERROR) << "Temporarily disabled for Win 8.";
 397     return;
 398   }
 399   ASSERT_TRUE(test::HasReferenceFilesInCheckout());
 400   ASSERT_TRUE(embedded_test_server()->InitializeAndWaitUntilReady());
 401
 402   ASSERT_TRUE(ForceMicrophoneVolumeTo100Percent());
 403
 404   ui_test_utils::NavigateToURL(
 405       browser(), embedded_test_server()->GetURL(kMainWebrtcTestHtmlPage));
 406   content::WebContents* left_tab =
 407       browser()->tab_strip_model()->GetActiveWebContents();
 408
 409   chrome::AddTabAt(browser(), GURL(), -1, true);
 410   content::WebContents* right_tab =
 411       browser()->tab_strip_model()->GetActiveWebContents();
 412   ui_test_utils::NavigateToURL(
 413       browser(), embedded_test_server()->GetURL(kMainWebrtcTestHtmlPage));
 414
 415   // Prepare the peer connections manually in this test since we don't add
 416   // getUserMedia-derived media streams in this test like the other tests.
 417   EXPECT_EQ("ok-peerconnection-created",
 418             ExecuteJavascript("preparePeerConnection()", left_tab));
 419   EXPECT_EQ("ok-peerconnection-created",
 420             ExecuteJavascript("preparePeerConnection()", right_tab));
 421
 422   AddAudioFile(kReferenceFileRelativeUrl, left_tab);
 423
 424   NegotiateCall(left_tab, right_tab);
 425
 426   // Note: the media flow isn't necessarily established on the connection just
 427   // because the ready state is ok on both sides. We sleep a bit between call
 428   // establishment and playing to avoid cutting of the beginning of the audio
 429   // file.
 430   test::SleepInJavascript(left_tab, 2000);
 431
 432   base::FilePath recording = CreateTemporaryWaveFile();
 433
 434   // Note: the sound clip is about 10 seconds: record for 15 seconds to get some
 435   // safety margins on each side.
 436   AudioRecorder recorder;
 437   static int kRecordingTimeSeconds = 15;
 438   ASSERT_TRUE(recorder.StartRecording(kRecordingTimeSeconds, recording, true));
 439
 440   PlayAudioFile(left_tab);
 441
 442   ASSERT_TRUE(recorder.WaitForRecordingToEnd());
 443   VLOG(0) << "Done recording to " << recording.value() << std::endl;
 444
 445   HangUp(left_tab);
 446
 447   base::FilePath trimmed_recording = CreateTemporaryWaveFile();
 448
 449   ASSERT_TRUE(RemoveSilence(recording, trimmed_recording));
 450   VLOG(0) << "Trimmed silence: " << trimmed_recording.value() << std::endl;
 451
 452   std::string raw_mos;
 453   std::string mos_lqo;
 454   base::FilePath reference_file_in_test_dir =
 455       test::GetReferenceFilesDir().Append(kReferenceFile);
 456   ASSERT_TRUE(RunPesq(reference_file_in_test_dir, trimmed_recording, 16000,
 457                       &raw_mos, &mos_lqo));
 458
 459   perf_test::PrintResult("audio_pesq", "", "raw_mos", raw_mos, "score", true);
 460   perf_test::PrintResult("audio_pesq", "", "mos_lqo", mos_lqo, "score", true);
 461
 462   EXPECT_TRUE(base::DeleteFile(recording, false));
 463   EXPECT_TRUE(base::DeleteFile(trimmed_recording, false));
 464 }