Adding GetAudioInputDeviceNames to AudioManager, this function is supposed to do device enumerati...

media/audio/win/audio_manager_win.cc

Index: media/audio/win/audio_manager_win.cc
===================================================================
--- media/audio/win/audio_manager_win.cc	(revision 86276)
+++ media/audio/win/audio_manager_win.cc	(working copy)
@@ -18,6 +18,7 @@
 #include "base/process_util.h"
 #include "base/string_number_conversions.h"
 #include "base/string_util.h"
+#include "base/stringprintf.h"
 #include "base/win/windows_version.h"
 #include "media/audio/fake_audio_input_stream.h"
 #include "media/audio/fake_audio_output_stream.h"
@@ -253,6 +254,20 @@
   base::LaunchApp(command_line, false, false, NULL);
 }
 
+void AudioManagerWin::GetAudioInputDeviceNames(
+    AudioInputDeviceNames* device_names) {
+  // TODO(xians): query a full list of valid devices.
+  if (HasAudioInputDevices()) {
+    // We use (device_name)_(index) to make up the unique_ids to identify the
+    // devices. For default device, the index is 0, so its unique_id is
+    // Default_0.
+    AudioInputDeviceName name;
+    name.device_name = AudioManagerBase::kDefaultDeviceName;

[awong, 2011/05/23 17:36:15]

...This really seems odd now...

[xians, 2011/05/23 20:15:59]

We only prepend the default device to the list to display to the users.
This "Default" string is only used as the name of the default device in the
list, and when opening the device, we still use WAVE_MAPPER.

+    name.unique_id = StringPrintf("%s_0", AudioManagerBase::kDefaultDeviceName);
+    device_names->push_back(name);
+  }
+}
+
 // static
 AudioManager* AudioManager::CreateAudioManager() {
   return new AudioManagerWin();