Implement HasInputDevices in CrasAudioManager

media/audio/cras/audio_manager_cras.cc

 // Copyright 2013 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 "media/audio/cras/audio_manager_cras.h"
 
 #include <algorithm>
 
 #include "base/command_line.h"
 #include "base/environment.h"
 #include "base/logging.h"
 #include "base/nix/xdg_util.h"
 #include "base/stl_util.h"
+#include "chromeos/audio/audio_device.h"
+#include "chromeos/audio/cras_audio_handler.h"
 #include "media/audio/cras/cras_input.h"
 #include "media/audio/cras/cras_unified.h"
 #include "media/base/channel_layout.h"
 
 // cras_util.h headers pull in min/max macros...
 // TODO(dgreid): Fix headers such that these aren't imported.
 #undef min
 #undef max
 
 namespace media {
@@ skipping 18 matching lines @@
 static const int kMaximumOutputBufferSize = 8192;
 
 // Default input buffer size.
 static const int kDefaultInputBufferSize = 1024;
 
 bool AudioManagerCras::HasAudioOutputDevices() {
   return true;
 }
 
 bool AudioManagerCras::HasAudioInputDevices() {
-  return true;
+  chromeos::AudioDeviceList devices;
+  chromeos::CrasAudioHandler::Get()->GetAudioDevices(&devices);
+  for (size_t i = 0; i < devices.size(); ++i)
+    if (devices[i].is_input && devices[i].is_for_simple_usage())
+      return true;
+  return false;
 }
 
 AudioManagerCras::AudioManagerCras(AudioLogFactory* audio_log_factory)
     : AudioManagerBase(audio_log_factory),
       has_keyboard_mic_(false) {
   SetMaxOutputStreamsAllowed(kMaxOutputStreams);
 }
 
 AudioManagerCras::~AudioManagerCras() {
   Shutdown();
@@ skipping 109 matching lines @@
     case 24:
       return SND_PCM_FORMAT_S24;
     case 32:
       return SND_PCM_FORMAT_S32;
     default:
       return SND_PCM_FORMAT_UNKNOWN;
   }
 }
 
 }  // namespace media