Refactor AudioParameters member setting.

media/audio/audio_parameters_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 "base/basictypes.h"
 #include "base/strings/string_number_conversions.h"
 #include "media/audio/audio_parameters.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace media {
@@ skipping 187 matching lines @@
       EXPECT_EQ(i < j, values[i] < values[j]);
     }
 
     // Verify that a value is never less than itself.
     EXPECT_FALSE(values[i] < values[i]);
   }
 }
 
 TEST(AudioParameters, Constructor_ValidChannelCounts) {
   int expected_channels = 8;
-  ChannelLayout expected_layout = CHANNEL_LAYOUT_5_1;
+  ChannelLayout expected_layout = CHANNEL_LAYOUT_DISCRETE;
 
   AudioParameters params(AudioParameters::AUDIO_PCM_LOW_LATENCY,
-                         expected_layout, expected_channels, 44100, 16, 880,
-                         AudioParameters::NO_EFFECTS);
-
-  EXPECT_EQ(expected_channels, params.channels());
-  EXPECT_EQ(expected_layout, params.channel_layout());
-  EXPECT_FALSE(params.IsValid());
-
-  expected_layout = CHANNEL_LAYOUT_DISCRETE;
-  params.Reset(AudioParameters::AUDIO_PCM_LOW_LATENCY, expected_layout,
-               expected_channels, 44100, 16, 880);
-
+                         expected_layout, 44100, 16, 880);
+  params.set_channels_for_discrete(expected_channels);
   EXPECT_EQ(expected_channels, params.channels());
   EXPECT_EQ(expected_layout, params.channel_layout());
   EXPECT_TRUE(params.IsValid());
 }
 
 }  // namespace media