Support the Aec dump for the APM in chrome

content/renderer/media/media_stream_dependency_factory.cc

 // Copyright (c) 2012 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 "content/renderer/media/media_stream_dependency_factory.h"
 
 #include <vector>
 
 #include "base/command_line.h"
 #include "base/strings/utf_string_conversions.h"
@@ skipping 735 matching lines @@
     IPC_MESSAGE_HANDLER(MediaStreamMsg_EnableAecDump, OnAecDumpFile)
     IPC_MESSAGE_HANDLER(MediaStreamMsg_DisableAecDump, OnDisableAecDump)
     IPC_MESSAGE_UNHANDLED(handled = false)
   IPC_END_MESSAGE_MAP()
   return handled;
 }
 
 void MediaStreamDependencyFactory::OnAecDumpFile(
     IPC::PlatformFileForTransit file_handle) {
   DCHECK_EQ(aec_dump_file_, base::kInvalidPlatformFileValue);
+  if (CommandLine::ForCurrentProcess()->HasSwitch(
+          switches::kEnableAudioTrackProcessing)) {
+    EnsureWebRtcAudioDeviceImpl();
+    GetWebRtcAudioDevice()->EnableAecDump(file_handle);

[Henrik Grunell, 2014/03/06 10:12:20]

Have WebRtcAudioDeviceImpl::EnableAecDump take a base::PlatformFile instead and
use IPC::PlatformFileForTransitToPlatformFile here.

[no longer working on chromium, 2014/03/06 18:57:21]

Done.

+    return;
+  }
+
+  // TODO(xians): Remove the following code after kEnableAudioTrackProcessing

[Henrik Grunell, 2014/03/06 10:12:20]

It shouldn't be removed when the flag is on by default, but when the flag is
removed.

[no longer working on chromium, 2014/03/06 18:57:21]

Done.

+  // is on by default.
   if (PeerConnectionFactoryCreated()) {
     base::PlatformFile file =
         IPC::PlatformFileForTransitToPlatformFile(file_handle);
     DCHECK_NE(file, base::kInvalidPlatformFileValue);
     StartAecDump(file);
   } else {
     aec_dump_file_ = IPC::PlatformFileForTransitToPlatformFile(file_handle);
     DCHECK_NE(aec_dump_file_, base::kInvalidPlatformFileValue);
   }
 }
 
 void MediaStreamDependencyFactory::OnDisableAecDump() {
+  if (CommandLine::ForCurrentProcess()->HasSwitch(
+          switches::kEnableAudioTrackProcessing)) {
+    GetWebRtcAudioDevice()->DisableAecDump();
+    return;
+  }
+
+  // TODO(xians): Remove the following code after kEnableAudioTrackProcessing
+  // is on by default.
   if (aec_dump_file_ != base::kInvalidPlatformFileValue)
     base::ClosePlatformFile(aec_dump_file_);
   aec_dump_file_ = base::kInvalidPlatformFileValue;
 }
 
 void MediaStreamDependencyFactory::StartAecDump(
     const base::PlatformFile& aec_dump_file) {
   // |pc_factory_| always takes ownership of |aec_dump_file|. If StartAecDump()
   // fails, |aec_dump_file| will be closed.
   if (!GetPcFactory()->StartAecDump(aec_dump_file))
     VLOG(1) << "Could not start AEC dump.";
 }
 
 void MediaStreamDependencyFactory::EnsureWebRtcAudioDeviceImpl() {
   if (audio_device_)
     return;
 
   audio_device_ = new WebRtcAudioDeviceImpl();
 }
 
 }  // namespace content