Add an AudioTrack based audio output stream.

media/audio/android/audio_manager_android.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 "media/audio/android/audio_manager_android.h"
 
 #include "base/android/build_info.h"
 #include "base/android/context_utils.h"
 #include "base/android/jni_array.h"
 #include "base/android/jni_string.h"
 #include "base/android/scoped_java_ref.h"
 #include "base/bind.h"
 #include "base/logging.h"
 #include "base/message_loop/message_loop.h"
 #include "base/strings/string_number_conversions.h"
 #include "jni/AudioManagerAndroid_jni.h"
 #include "media/audio/android/audio_record_input.h"
 #include "media/audio/android/opensles_input.h"
 #include "media/audio/android/opensles_output.h"
+#include "media/audio/android/audio_track_output_stream.h"
 #include "media/audio/audio_manager.h"
 #include "media/audio/audio_parameters.h"
 #include "media/audio/fake_audio_input_stream.h"
 #include "media/base/channel_layout.h"
 
 using base::android::AppendJavaStringArrayToStringVector;
 using base::android::AttachCurrentThread;
 using base::android::ConvertJavaStringToUTF8;
 using base::android::ConvertUTF8ToJavaString;
 using base::android::ScopedJavaLocalRef;
@@ skipping 174 matching lines @@
 }
 
 AudioOutputStream* AudioManagerAndroid::MakeLowLatencyOutputStream(
     const AudioParameters& params,
     const std::string& device_id) {
   DLOG_IF(ERROR, !device_id.empty()) << "Not implemented!";
   DCHECK_EQ(AudioParameters::AUDIO_PCM_LOW_LATENCY, params.format());
 
   // Set stream type which matches the current system-wide audio mode used by
   // the Android audio manager.
-  const SLint32 stream_type = communication_mode_is_on_ ?
-      SL_ANDROID_STREAM_VOICE : SL_ANDROID_STREAM_MEDIA;
-  return new OpenSLESOutputStream(this, params, stream_type);
+  // const SLint32 stream_type = communication_mode_is_on_ ?
+  //     SL_ANDROID_STREAM_VOICE : SL_ANDROID_STREAM_MEDIA;
+//  return new OpenSLESOutputStream(this, params, stream_type);
+  return new AudioTrackOutputStream(this, params);
 }
 
 AudioInputStream* AudioManagerAndroid::MakeLinearInputStream(
     const AudioParameters& params, const std::string& device_id) {
   // TODO(henrika): add support for device selection if/when any client
   // needs it.
   DLOG_IF(ERROR, !device_id.empty()) << "Not implemented!";
   DCHECK_EQ(AudioParameters::AUDIO_PCM_LINEAR, params.format());
   return new OpenSLESInputStream(this, params);
 }
@@ skipping 182 matching lines @@
   output_volume_override_ = volume;
 
   DCHECK(GetTaskRunner()->BelongsToCurrentThread());
   for (OutputStreams::iterator it = streams_.begin();
        it != streams_.end(); ++it) {
     (*it)->SetVolume(volume);
   }
 }
 
 }  // namespace media