Add recording capability to AudioManager, and implemented on windows using the WaveIn APIs.

media/audio/mac/audio_manager_mac.cc

-// Copyright (c) 2009 The Chromium Authors. All rights reserved.
+// Copyright (c) 2010 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 <CoreAudio/AudioHardware.h>
 
 #include "base/at_exit.h"
 #include "media/audio/fake_audio_output_stream.h"
 #include "media/audio/mac/audio_manager_mac.h"
 #include "media/audio/mac/audio_output_mac.h"
 
 bool AudioManagerMac::HasAudioOutputDevices() {
   AudioDeviceID output_device_id = kAudioObjectUnknown;
   AudioObjectPropertyAddress property_address = {
     kAudioHardwarePropertyDefaultOutputDevice,  // mSelector
     kAudioObjectPropertyScopeGlobal,            // mScope
     kAudioObjectPropertyElementMaster           // mElement
   };
   size_t output_device_id_size = sizeof(output_device_id);
   OSStatus err = AudioObjectGetPropertyData(kAudioObjectSystemObject,
                                             &property_address,
                                             0,     // inQualifierDataSize
                                             NULL,  // inQualifierData
                                             &output_device_id_size,
                                             &output_device_id);
   return err == kAudioHardwareNoError &&
          output_device_id != kAudioObjectUnknown;
 }
 
+bool AudioManagerMac::HasAudioInputDevices() {
+  // TODO(satish): implement.
+  return false;
+}
+
+AudioInputStream* AudioManagerMac::MakeAudioInputStream(
+    Format format,
+    int channels,
+    int sample_rate,
+    char bits_per_sample,
+    uint32 samples_per_packet) {
+  // TODO(satish): implement.
+  return NULL;
+}
+
 AudioOutputStream* AudioManagerMac::MakeAudioOutputStream(
     Format format,
     int channels,
     int sample_rate,
     char bits_per_sample) {
   if (format == AUDIO_MOCK)
     return FakeAudioOutputStream::MakeFakeStream();
   else if (format != AUDIO_PCM_LINEAR)
     return NULL;
   return new PCMQueueOutAudioOutputStream(this, channels, sample_rate,
@@ skipping 26 matching lines @@
 }
 
 // By convention, the AudioManager is not thread safe.
 AudioManager* AudioManager::GetAudioManager() {
   if (!g_audio_manager) {
     g_audio_manager = new AudioManagerMac();
     base::AtExitManager::RegisterCallback(&DestroyAudioManagerMac, NULL);
   }
   return g_audio_manager;
 }