Making AudioInputDeviceManager to return UnavailableDeviceParameters when there are no physical inp…

content/browser/renderer_host/media/audio_input_device_manager.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/browser/renderer_host/media/audio_input_device_manager.h"
 
 #include <memory>
 
 #include "base/bind.h"
 #include "base/command_line.h"
@@ skipping 153 matching lines @@
     base::TimeTicks start_time,
     const media::AudioParameters& input_params,
     const media::AudioParameters& matched_output_params,
     const std::string& matched_output_device_id) {
   DCHECK_CURRENTLY_ON(BrowserThread::IO);
   DCHECK(GetDevice(session_id) == devices_.end());
 
   UMA_HISTOGRAM_TIMES("Media.AudioInputDeviceManager.OpenOnDeviceThreadTime",
                       base::TimeTicks::Now() - start_time);
 
+  media::AudioParameters valid_input_params =
+      input_params.IsValid()
+          ? input_params
+          : media::AudioParameters::UnavailableDeviceParams();
+
   StreamDeviceInfo info(device.type, device.name, device.id);
   info.session_id = session_id;
-  info.device.input.sample_rate = input_params.sample_rate();
-  info.device.input.channel_layout = input_params.channel_layout();
-  info.device.input.frames_per_buffer = input_params.frames_per_buffer();
-  info.device.input.effects = input_params.effects();
-  info.device.input.mic_positions = input_params.mic_positions();
+  info.device.input.sample_rate = valid_input_params.sample_rate();
+  info.device.input.channel_layout = valid_input_params.channel_layout();
+  info.device.input.frames_per_buffer = valid_input_params.frames_per_buffer();
+  info.device.input.effects = valid_input_params.effects();
+  info.device.input.mic_positions = valid_input_params.mic_positions();
   info.device.matched_output_device_id = matched_output_device_id;
   info.device.matched_output.sample_rate = matched_output_params.sample_rate();
   info.device.matched_output.channel_layout =
       matched_output_params.channel_layout();
   info.device.matched_output.frames_per_buffer =
       matched_output_params.frames_per_buffer();
   info.device.matched_output.effects = matched_output_params.effects();
 
   devices_.push_back(info);
 
@@ skipping 22 matching lines @@
 
 #if defined(OS_CHROMEOS)
 void AudioInputDeviceManager::SetKeyboardMicStreamActiveOnUIThread(
     bool active) {
   DCHECK_CURRENTLY_ON(BrowserThread::UI);
   chromeos::CrasAudioHandler::Get()->SetKeyboardMicActive(active);
 }
 #endif
 
 }  // namespace content