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.
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 "base/win/windows_version.h"
14 #include "chrome/browser/media/webrtc_browsertest_base.h"
15 #include "chrome/browser/media/webrtc_browsertest_common.h"
16 #include "chrome/browser/profiles/profile.h"
17 #include "chrome/browser/ui/browser.h"
18 #include "chrome/browser/ui/browser_tabstrip.h"
19 #include "chrome/browser/ui/tabs/tab_strip_model.h"
20 #include "chrome/common/chrome_paths.h"
21 #include "chrome/common/chrome_switches.h"
22 #include "chrome/test/base/ui_test_utils.h"
23 #include "chrome/test/ui/ui_test.h"
24 #include "content/public/test/browser_test_utils.h"
25 #include "net/test/embedded_test_server/embedded_test_server.h"
26 #include "testing/perf/perf_test.h"
28 static const base::FilePath::CharType kReferenceFile[] =
30 FILE_PATH_LITERAL("pyauto_private/webrtc/human-voice-win.wav");
32 FILE_PATH_LITERAL("pyauto_private/webrtc/human-voice-linux.wav");
35 // The javascript will load the reference file relative to its location,
36 // which is in /webrtc on the web server. Therefore, prepend a '..' traversal.
37 static const char kReferenceFileRelativeUrl[] =
39 "../pyauto_private/webrtc/human-voice-win.wav";
41 "../pyauto_private/webrtc/human-voice-linux.wav";
44 static const base::FilePath::CharType kToolsPath[] =
45 FILE_PATH_LITERAL("pyauto_private/media/tools");
47 static const char kMainWebrtcTestHtmlPage[] =
48 "files/webrtc/webrtc_audio_quality_test.html";
50 static base::FilePath GetTestDataDir() {
51 base::FilePath source_dir;
52 PathService::Get(chrome::DIR_TEST_DATA, &source_dir);
56 // Test we can set up a WebRTC call and play audio through it.
58 // You must have the src-internal solution in your .gclient to put the required
59 // pyauto_private directory into chrome/test/data/.
61 // This test will only work on machines that have been configured to record
65 // 1. # sudo apt-get install pavucontrol
66 // 2. For the user who will run the test: # pavucontrol
67 // 3. In a separate terminal, # arecord dummy
68 // 4. In pavucontrol, go to the recording tab.
69 // 5. For the ALSA plug-in [aplay]: ALSA Capture from, change from <x> to
70 // <Monitor of x>, where x is whatever your primary sound device is called.
71 // 6. Try launching chrome as the target user on the target machine, try
72 // playing, say, a YouTube video, and record with # arecord -f dat tmp.dat.
73 // Verify the recording with aplay (should have recorded what you played
76 // Note: the volume for ALL your input devices will be forced to 100% by
77 // running this test on Linux.
80 // 1. Control panel > Sound > Manage audio devices.
81 // 2. In the recording tab, right-click in an empty space in the pane with the
82 // devices. Tick 'show disabled devices'.
83 // 3. You should see a 'stero mix' device - this is what your speakers output.
84 // Right click > Properties.
85 // 4. In the Listen tab for the mix device, check the 'listen to this device'
86 // checkbox. Ensure the mix device is the default recording device.
87 // 5. Launch chrome and try playing a video with sound. You should see
88 // in the volume meter for the mix device. Configure the mix device to have
89 // 50 / 100 in level. Also go into the playback tab, right-click Speakers,
90 // and set that level to 50 / 100. Otherwise you will get distortion in
92 class WebrtcAudioQualityBrowserTest : public WebRtcTestBase {
94 virtual void SetUpInProcessBrowserTestFixture() OVERRIDE {
95 PeerConnectionServerRunner::KillAllPeerConnectionServersOnCurrentSystem();
98 virtual void SetUpCommandLine(CommandLine* command_line) OVERRIDE {
99 // This test expects real device handling and requires a real webcam / audio
100 // device; it will not work with fake devices.
101 EXPECT_FALSE(command_line->HasSwitch(
102 switches::kUseFakeDeviceForMediaStream));
103 EXPECT_FALSE(command_line->HasSwitch(
104 switches::kUseFakeUIForMediaStream));
107 bool HasAllRequiredResources() {
108 base::FilePath reference_file =
109 GetTestDataDir().Append(kReferenceFile);
110 if (!base::PathExists(reference_file)) {
111 LOG(ERROR) << "Cannot find the reference file to be used for audio "
112 << "quality comparison: " << reference_file.value();
118 void AddAudioFile(const std::string& input_file_relative_url,
119 content::WebContents* tab_contents) {
120 EXPECT_EQ("ok-added", ExecuteJavascript(
121 "addAudioFile('" + input_file_relative_url + "')", tab_contents));
124 void PlayAudioFile(content::WebContents* tab_contents) {
125 EXPECT_EQ("ok-playing", ExecuteJavascript("playAudioFile()", tab_contents));
128 // Ensures we didn't get any errors asynchronously (e.g. while no javascript
129 // call from this test was outstanding).
130 // TODO(phoglund): this becomes obsolete when we switch to communicating with
131 // the DOM message queue.
132 void AssertNoAsynchronousErrors(content::WebContents* tab_contents) {
133 EXPECT_EQ("ok-no-errors",
134 ExecuteJavascript("getAnyTestFailures()", tab_contents));
137 void EstablishCall(content::WebContents* from_tab,
138 content::WebContents* to_tab) {
139 EXPECT_EQ("ok-negotiating",
140 ExecuteJavascript("negotiateCall()", from_tab));
142 // Ensure the call gets up on both sides.
143 EXPECT_TRUE(PollingWaitUntil("getPeerConnectionReadyState()",
144 "active", from_tab));
145 EXPECT_TRUE(PollingWaitUntil("getPeerConnectionReadyState()",
149 void HangUp(content::WebContents* from_tab) {
150 EXPECT_EQ("ok-call-hung-up", ExecuteJavascript("hangUp()", from_tab));
153 void WaitUntilHangupVerified(content::WebContents* tab_contents) {
154 EXPECT_TRUE(PollingWaitUntil("getPeerConnectionReadyState()",
155 "no-peer-connection", tab_contents));
158 base::FilePath CreateTemporaryWaveFile() {
159 base::FilePath filename;
160 EXPECT_TRUE(file_util::CreateTemporaryFile(&filename));
161 base::FilePath wav_filename =
162 filename.AddExtension(FILE_PATH_LITERAL(".wav"));
163 EXPECT_TRUE(base::Move(filename, wav_filename));
167 PeerConnectionServerRunner peerconnection_server_;
170 class AudioRecorder {
172 AudioRecorder(): recording_application_(base::kNullProcessHandle) {}
175 // Starts the recording program for the specified duration. Returns true
177 bool StartRecording(int duration_sec, const base::FilePath& output_file,
179 EXPECT_EQ(base::kNullProcessHandle, recording_application_)
180 << "Tried to record, but is already recording.";
182 CommandLine command_line(CommandLine::NO_PROGRAM);
184 // This disable is required to run SoundRecorder.exe on 64-bit Windows
185 // from a 32-bit binary. We need to load the wow64 disable function from
186 // the DLL since it doesn't exist on Windows XP.
187 // TODO(phoglund): find some cleaner solution than using SoundRecorder.exe.
188 base::ScopedNativeLibrary kernel32_lib(base::FilePath(L"kernel32"));
189 if (kernel32_lib.is_valid()) {
190 typedef BOOL (WINAPI* Wow64DisableWow64FSRedirection)(PVOID*);
191 Wow64DisableWow64FSRedirection wow_64_disable_wow_64_fs_redirection;
192 wow_64_disable_wow_64_fs_redirection =
193 reinterpret_cast<Wow64DisableWow64FSRedirection>(
194 kernel32_lib.GetFunctionPointer(
195 "Wow64DisableWow64FsRedirection"));
196 if (wow_64_disable_wow_64_fs_redirection != NULL) {
197 PVOID* ignored = NULL;
198 wow_64_disable_wow_64_fs_redirection(ignored);
202 char duration_in_hms[128] = {0};
203 struct tm duration_tm = {0};
204 duration_tm.tm_sec = duration_sec;
205 EXPECT_NE(0u, strftime(duration_in_hms, arraysize(duration_in_hms),
206 "%H:%M:%S", &duration_tm));
208 command_line.SetProgram(
209 base::FilePath(FILE_PATH_LITERAL("SoundRecorder.exe")));
210 command_line.AppendArg("/FILE");
211 command_line.AppendArgPath(output_file);
212 command_line.AppendArg("/DURATION");
213 command_line.AppendArg(duration_in_hms);
215 int num_channels = mono ? 1 : 2;
216 command_line.SetProgram(base::FilePath("arecord"));
217 command_line.AppendArg("-d");
218 command_line.AppendArg(base::StringPrintf("%d", duration_sec));
219 command_line.AppendArg("-f");
220 command_line.AppendArg("dat");
221 command_line.AppendArg("-c");
222 command_line.AppendArg(base::StringPrintf("%d", num_channels));
223 command_line.AppendArgPath(output_file);
226 LOG(INFO) << "Running " << command_line.GetCommandLineString();
227 return base::LaunchProcess(command_line, base::LaunchOptions(),
228 &recording_application_);
231 // Joins the recording program. Returns true on success.
232 bool WaitForRecordingToEnd() {
234 base::WaitForExitCode(recording_application_, &exit_code);
235 return exit_code == 0;
238 base::ProcessHandle recording_application_;
241 bool ForceMicrophoneVolumeTo100Percent() {
243 CommandLine command_line(GetTestDataDir().Append(kToolsPath).Append(
244 FILE_PATH_LITERAL("force_mic_volume_max.exe")));
245 LOG(INFO) << "Running " << command_line.GetCommandLineString();
247 if (!base::GetAppOutput(command_line, &result)) {
248 LOG(ERROR) << "Failed to set source volume: output was " << result;
252 // Just force the volume of, say the first 5 devices. A machine will rarely
253 // have more input sources than that. This is way easier than finding the
254 // input device we happen to be using.
255 for (int device_index = 0; device_index < 5; ++device_index) {
257 const std::string kHundredPercentVolume = "65536";
258 CommandLine command_line(base::FilePath(FILE_PATH_LITERAL("pacmd")));
259 command_line.AppendArg("set-source-volume");
260 command_line.AppendArg(base::StringPrintf("%d", device_index));
261 command_line.AppendArg(kHundredPercentVolume);
262 LOG(INFO) << "Running " << command_line.GetCommandLineString();
263 if (!base::GetAppOutput(command_line, &result)) {
264 LOG(ERROR) << "Failed to set source volume: output was " << result;
272 // Removes silence from beginning and end of the |input_audio_file| and writes
273 // the result to the |output_audio_file|. Returns true on success.
274 bool RemoveSilence(const base::FilePath& input_file,
275 const base::FilePath& output_file) {
276 // SOX documentation for silence command: http://sox.sourceforge.net/sox.html
277 // To remove the silence from both beginning and end of the audio file, we
278 // call sox silence command twice: once on normal file and again on its
279 // reverse, then we reverse the final output.
280 // Silence parameters are (in sequence):
281 // ABOVE_PERIODS: The period for which silence occurs. Value 1 is used for
282 // silence at beginning of audio.
283 // DURATION: the amount of time in seconds that non-silence must be detected
284 // before sox stops trimming audio.
285 // THRESHOLD: value used to indicate what sample value is treates as silence.
286 const char* kAbovePeriods = "1";
287 const char* kDuration = "2";
288 const char* kTreshold = "5%";
291 CommandLine command_line(GetTestDataDir().Append(kToolsPath).Append(
292 FILE_PATH_LITERAL("sox.exe")));
294 CommandLine command_line(base::FilePath(FILE_PATH_LITERAL("sox")));
296 command_line.AppendArgPath(input_file);
297 command_line.AppendArgPath(output_file);
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 command_line.AppendArg("silence");
304 command_line.AppendArg(kAbovePeriods);
305 command_line.AppendArg(kDuration);
306 command_line.AppendArg(kTreshold);
307 command_line.AppendArg("reverse");
309 LOG(INFO) << "Running " << command_line.GetCommandLineString();
311 bool ok = base::GetAppOutput(command_line, &result);
312 LOG(INFO) << "Output was:\n\n" << result;
316 bool CanParseAsFloat(const std::string& value) {
317 return atof(value.c_str()) != 0 || value == "0";
320 // Runs PESQ to compare |reference_file| to a |actual_file|. The |sample_rate|
321 // can be either 16000 or 8000.
323 // PESQ is only mono-aware, so the files should preferably be recorded in mono.
324 // Furthermore it expects the file to be 16 rather than 32 bits, even though
325 // 32 bits might work. The audio bandwidth of the two files should be the same
326 // e.g. don't compare a 32 kHz file to a 8 kHz file.
328 // The raw score in MOS is written to |raw_mos|, whereas the MOS-LQO score is
329 // written to mos_lqo. The scores are returned as floats in string form (e.g.
330 // "3.145", etc). Returns true on success.
331 bool RunPesq(const base::FilePath& reference_file,
332 const base::FilePath& actual_file,
333 int sample_rate, std::string* raw_mos, std::string* mos_lqo) {
334 // PESQ will break if the paths are too long (!).
335 EXPECT_LT(reference_file.value().length(), 128u);
336 EXPECT_LT(actual_file.value().length(), 128u);
339 base::FilePath pesq_path =
340 GetTestDataDir().Append(kToolsPath).Append(FILE_PATH_LITERAL("pesq.exe"));
342 base::FilePath pesq_path =
343 GetTestDataDir().Append(kToolsPath).Append(FILE_PATH_LITERAL("pesq"));
346 if (!base::PathExists(pesq_path)) {
347 LOG(ERROR) << "Missing PESQ binary in " << pesq_path.value();
351 CommandLine command_line(pesq_path);
352 command_line.AppendArg(base::StringPrintf("+%d", sample_rate));
353 command_line.AppendArgPath(reference_file);
354 command_line.AppendArgPath(actual_file);
356 LOG(INFO) << "Running " << command_line.GetCommandLineString();
358 if (!base::GetAppOutput(command_line, &result)) {
359 LOG(ERROR) << "Failed to run PESQ.";
362 LOG(INFO) << "Output was:\n\n" << result;
364 const std::string result_anchor = "Prediction (Raw MOS, MOS-LQO): = ";
365 std::size_t anchor_pos = result.find(result_anchor);
366 if (anchor_pos == std::string::npos) {
367 LOG(ERROR) << "PESQ was not able to compute a score; we probably recorded "
372 // There are two tab-separated numbers on the format x.xxx, e.g. 5 chars each.
373 std::size_t first_number_pos = anchor_pos + result_anchor.length();
374 *raw_mos = result.substr(first_number_pos, 5);
375 EXPECT_TRUE(CanParseAsFloat(*raw_mos)) << "Failed to parse raw MOS number.";
376 *mos_lqo = result.substr(first_number_pos + 5 + 1, 5);
377 EXPECT_TRUE(CanParseAsFloat(*mos_lqo)) << "Failed to parse MOS LQO number.";
382 #if defined(OS_LINUX) || defined(OS_WIN)
383 // Only implemented on Linux and Windows for now.
384 #define MAYBE_MANUAL_TestAudioQuality MANUAL_TestAudioQuality
386 #define MAYBE_MANUAL_TestAudioQuality DISABLED_MANUAL_TestAudioQuality
389 IN_PROC_BROWSER_TEST_F(WebrtcAudioQualityBrowserTest,
390 MAYBE_MANUAL_TestAudioQuality) {
392 if (base::win::GetVersion() < base::win::VERSION_VISTA) {
393 // It would take work to implement this on XP; not prioritized right now.
394 LOG(ERROR) << "This test is not implemented for Windows XP.";
398 ASSERT_TRUE(HasAllRequiredResources());
399 // TODO(phoglund): make this use embedded_test_server when that test server
400 // can handle files > ~400Kb.
401 ASSERT_TRUE(test_server()->Start());
402 ASSERT_TRUE(peerconnection_server_.Start());
404 ASSERT_TRUE(ForceMicrophoneVolumeTo100Percent());
406 ui_test_utils::NavigateToURL(
407 browser(), test_server()->GetURL(kMainWebrtcTestHtmlPage));
408 content::WebContents* left_tab =
409 browser()->tab_strip_model()->GetActiveWebContents();
411 chrome::AddBlankTabAt(browser(), -1, true);
412 content::WebContents* right_tab =
413 browser()->tab_strip_model()->GetActiveWebContents();
414 ui_test_utils::NavigateToURL(
415 browser(), test_server()->GetURL(kMainWebrtcTestHtmlPage));
417 ConnectToPeerConnectionServer("peer 1", left_tab);
418 ConnectToPeerConnectionServer("peer 2", right_tab);
420 EXPECT_EQ("ok-peerconnection-created",
421 ExecuteJavascript("preparePeerConnection()", left_tab));
423 AddAudioFile(kReferenceFileRelativeUrl, left_tab);
425 EstablishCall(left_tab, right_tab);
427 // Note: the media flow isn't necessarily established on the connection just
428 // because the ready state is ok on both sides. We sleep a bit between call
429 // establishment and playing to avoid cutting of the beginning of the audio
431 SleepInJavascript(left_tab, 2000);
433 base::FilePath recording = CreateTemporaryWaveFile();
435 // Note: the sound clip is about 10 seconds: record for 15 seconds to get some
436 // safety margins on each side.
437 AudioRecorder recorder;
438 static int kRecordingTimeSeconds = 15;
439 ASSERT_TRUE(recorder.StartRecording(kRecordingTimeSeconds, recording, true));
441 PlayAudioFile(left_tab);
443 ASSERT_TRUE(recorder.WaitForRecordingToEnd());
444 LOG(INFO) << "Done recording to " << recording.value() << std::endl;
446 AssertNoAsynchronousErrors(left_tab);
447 AssertNoAsynchronousErrors(right_tab);
450 WaitUntilHangupVerified(left_tab);
451 WaitUntilHangupVerified(right_tab);
453 AssertNoAsynchronousErrors(left_tab);
454 AssertNoAsynchronousErrors(right_tab);
456 base::FilePath trimmed_recording = CreateTemporaryWaveFile();
458 ASSERT_TRUE(RemoveSilence(recording, trimmed_recording));
459 LOG(INFO) << "Trimmed silence: " << trimmed_recording.value() << std::endl;
463 base::FilePath reference_file_in_test_dir =
464 GetTestDataDir().Append(kReferenceFile);
465 ASSERT_TRUE(RunPesq(reference_file_in_test_dir, trimmed_recording, 16000,
466 &raw_mos, &mos_lqo));
468 perf_test::PrintResult("audio_pesq", "", "raw_mos", raw_mos, "score", true);
469 perf_test::PrintResult("audio_pesq", "", "mos_lqo", mos_lqo, "score", true);
471 EXPECT_TRUE(base::DeleteFile(recording, false));
472 EXPECT_TRUE(base::DeleteFile(trimmed_recording, false));
474 ASSERT_TRUE(peerconnection_server_.Stop());