Refactor AudioParameters member setting.

media/audio/win/audio_low_latency_input_win_unittest.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 <windows.h>
 #include <mmsystem.h>
 
 #include "base/basictypes.h"
 #include "base/environment.h"
 #include "base/files/file_util.h"
@@ skipping 175 matching lines @@
   AudioParameters::Format format() const { return default_params_.format(); }
   int channels() const {
     return ChannelLayoutToChannelCount(default_params_.channel_layout());
   }
   int bits_per_sample() const { return default_params_.bits_per_sample(); }
   int sample_rate() const { return default_params_.sample_rate(); }
   int frames_per_buffer() const { return frames_per_buffer_; }
 
  private:
   AudioInputStream* CreateInputStream() {
+    AudioParameters params = default_params_;
+    params.set_frames_per_buffer(frames_per_buffer_);
     AudioInputStream* ais = audio_man_->MakeAudioInputStream(
-        AudioParameters(format(), default_params_.channel_layout(),
-                        sample_rate(), bits_per_sample(), frames_per_buffer_,
-                        default_params_.effects()),
-        AudioManagerBase::kDefaultDeviceId);
+        params, AudioManagerBase::kDefaultDeviceId);
     EXPECT_TRUE(ais);
     return ais;
   }
 
   AudioManager* audio_man_;
   AudioParameters default_params_;
   int frames_per_buffer_;
 };
 
 // Convenience method which creates a default AudioInputStream object.
@@ skipping 252 matching lines @@
   WriteToFileAudioSink file_sink(file_name, aisw.bits_per_sample());
   VLOG(0) << ">> Speak into the default microphone while recording.";
   ais->Start(&file_sink);
   base::PlatformThread::Sleep(TestTimeouts::action_timeout());
   ais->Stop();
   VLOG(0) << ">> Recording has stopped.";
   ais.Close();
 }
 
 }  // namespace media