Let Contraints Controll Mute/Unmute Audio Local Playback For Desktop Sharing

content/browser/webrtc/webrtc_getusermedia_browsertest.cc

 // 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 <stddef.h>
 
 #include "base/command_line.h"
 #include "base/json/json_reader.h"
 #include "base/memory/ref_counted_memory.h"
 #include "base/strings/stringprintf.h"
 #include "base/test/trace_event_analyzer.h"
 #include "base/threading/thread_restrictions.h"
 #include "base/trace_event/trace_event_impl.h"
 #include "base/values.h"
 #include "build/build_config.h"
+#include "content/browser/browser_main_loop.h"
+#include "content/browser/renderer_host/media/media_stream_manager.h"
 #include "content/browser/web_contents/web_contents_impl.h"
 #include "content/browser/webrtc/webrtc_content_browsertest_base.h"
 #include "content/browser/webrtc/webrtc_internals.h"
 #include "content/public/common/content_switches.h"
 #include "content/public/test/browser_test_utils.h"
 #include "content/public/test/content_browser_test_utils.h"
 #include "content/public/test/test_utils.h"
 #include "content/shell/browser/shell.h"
 #include "net/test/embedded_test_server/embedded_test_server.h"
 #include "testing/perf/perf_test.h"
@@ skipping 43 matching lines @@
     const std::string& audio_source_id,
     const std::string& video_source_id) {
   const std::string audio_constraint =
       "audio: {optional: [{sourceId:\"" + audio_source_id + "\"}]}, ";
 
   const std::string video_constraint =
       "video: {optional: [{ sourceId:\"" + video_source_id + "\"}]}";
   return function_name + "({" + audio_constraint + video_constraint + "});";
 }
 
+std::string GenerateGetUserMediaWithDisableLocalEcho(
+    const std::string& function_name,
+    const std::string& disable_local_echo) {
+  const std::string audio_constraint =
+      "audio:{mandatory: { chromeMediaSource : 'system', disableLocalEcho : " +
+      disable_local_echo + " }},";
+
+  const std::string video_constraint =
+      "video: { mandatory: { chromeMediaSource:'screen' }}";
+  return function_name + "({" + audio_constraint + video_constraint + "});";
+}
+
+bool VerifyDisableLocalEcho(bool expect_value,
+                            const content::StreamControls& controls) {
+  return expect_value == controls.disable_local_echo;
+}
+
 }  // namespace
 
 namespace content {
 
 class WebRtcGetUserMediaBrowserTest : public WebRtcContentBrowserTestBase {
  public:
   WebRtcGetUserMediaBrowserTest() : trace_log_(NULL) {
     // Automatically grant device permission.
     AppendUseFakeUIForMediaStreamFlag();
   }
@@ skipping 627 matching lines @@
   GURL url(embedded_test_server()->GetURL("/media/getusermedia.html"));
 
   std::string call =
       GenerateGetUserMediaWithMandatorySourceID(
           "getUserMediaInIframeAndCloseInFailureCb", "invalid", "invalid");
   NavigateToURL(shell(), url);
 
   ExecuteJavascriptAndWaitForOk(call);
 }
 
+IN_PROC_BROWSER_TEST_F(WebRtcGetUserMediaBrowserTest,
+                       DisableLocalEchoParameter) {
+  base::CommandLine::ForCurrentProcess()->AppendSwitch(
+      switches::kEnableExperimentalWebPlatformFeatures);
+  ASSERT_TRUE(embedded_test_server()->Start());
+
+  GURL url(embedded_test_server()->GetURL("/media/getusermedia.html"));
+  NavigateToURL(shell(), url);
+
+  MediaStreamManager* manager =
+      BrowserMainLoop::GetInstance()->media_stream_manager();
+
+  manager->SetGenerateStreamCallbackForTesting(
+      base::Bind(&VerifyDisableLocalEcho, false));
+  std::string call = GenerateGetUserMediaWithDisableLocalEcho(
+      "getUserMediaAndExpectSuccess", "false");
+  ExecuteJavascriptAndWaitForOk(call);
+
+  manager->SetGenerateStreamCallbackForTesting(
+      base::Bind(&VerifyDisableLocalEcho, true));
+  call = GenerateGetUserMediaWithDisableLocalEcho(
+      "getUserMediaAndExpectSuccess", "true");
+  ExecuteJavascriptAndWaitForOk(call);
+
+  manager->SetGenerateStreamCallbackForTesting(
+      MediaStreamManager::GenerateStreamTestCallback());
+}
+
 }  // namespace content