Log audio system used to WebRTC log.

media/audio/alsa/audio_manager_alsa.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/alsa/audio_manager_alsa.h"
 
 #include <stddef.h>
 
 #include "base/command_line.h"
 #include "base/environment.h"
@@ skipping 34 matching lines @@
 // In addition, note that we support no more than 2 channels for recording,
 // hence surround devices are not stored in the list.
 static const char* kInvalidAudioInputDevices[] = {
   "default",
   "dmix",
   "null",
   "pulse",
   "surround",
 };
 
+namespace {
+const char kAudioManagerName[] = "ALSA";
+}
+
 // static
 void AudioManagerAlsa::ShowLinuxAudioInputSettings() {
   std::unique_ptr<base::Environment> env(base::Environment::Create());
   base::CommandLine command_line(base::CommandLine::NO_PROGRAM);
   switch (base::nix::GetDesktopEnvironment(env.get())) {
     case base::nix::DESKTOP_ENVIRONMENT_GNOME:
       command_line.SetProgram(base::FilePath("gnome-volume-control"));
       break;
     case base::nix::DESKTOP_ENVIRONMENT_KDE3:
     case base::nix::DESKTOP_ENVIRONMENT_KDE4:
@@ skipping 55 matching lines @@
 
 AudioParameters AudioManagerAlsa::GetInputStreamParameters(
     const std::string& device_id) {
   static const int kDefaultInputBufferSize = 1024;
 
   return AudioParameters(
       AudioParameters::AUDIO_PCM_LOW_LATENCY, CHANNEL_LAYOUT_STEREO,
       kDefaultSampleRate, 16, kDefaultInputBufferSize);
 }
 
+const char* AudioManagerAlsa::GetName() {
+  return kAudioManagerName;
+}
+
 void AudioManagerAlsa::GetAlsaAudioDevices(StreamType type,
                                            AudioDeviceNames* device_names) {
   // Constants specified by the ALSA API for device hints.
   static const char kPcmInterfaceName[] = "pcm";
   int card = -1;
 
   // Loop through the sound cards to get ALSA device hints.
   while (!wrapper_->CardNext(&card) && card >= 0) {
     void** hints = NULL;
     int error = wrapper_->DeviceNameHint(card, kPcmInterfaceName, &hints);
@@ skipping 223 matching lines @@
   if (base::CommandLine::ForCurrentProcess()->HasSwitch(
           switches::kAlsaInputDevice)) {
     device_name = base::CommandLine::ForCurrentProcess()->GetSwitchValueASCII(
         switches::kAlsaInputDevice);
   }
 
   return new AlsaPcmInputStream(this, device_name, params, wrapper_.get());
 }
 
 }  // namespace media