Make AudioParameters a class instead of a struct

media/base/channel_layout.h

 // Copyright (c) 2011 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.
 
 #ifndef MEDIA_BASE_CHANNEL_LAYOUT_H_
 #define MEDIA_BASE_CHANNEL_LAYOUT_H_
 
 #include "media/base/media_export.h"
 
 enum ChannelLayout {
   CHANNEL_LAYOUT_NONE = 0,
   CHANNEL_LAYOUT_UNSUPPORTED,
 
   // Front C
   CHANNEL_LAYOUT_MONO,
 
   // Front L, Front R
   CHANNEL_LAYOUT_STEREO,
 
   // Front L, Front R, Back C
   CHANNEL_LAYOUT_2_1,
 
   // Front L, Front R, Front C
   CHANNEL_LAYOUT_SURROUND,
 
   // Front L, Front R, Front C, Back C
-  CHANNEL_LAYOUT_4POINT0,
+  CHANNEL_LAYOUT_4_0,
 
   // Front L, Front R, Side L, Side R
   CHANNEL_LAYOUT_2_2,
 
   // Front L, Front R, Back L, Back R
   CHANNEL_LAYOUT_QUAD,
 
   // Front L, Front R, Front C, Side L, Side R
-  CHANNEL_LAYOUT_5POINT0,
+  CHANNEL_LAYOUT_5_0,
 
   // Front L, Front R, Front C, Side L, Side R, LFE
-  CHANNEL_LAYOUT_5POINT1,
+  CHANNEL_LAYOUT_5_1,
 
   // Front L, Front R, Front C, Back L, Back R
-  CHANNEL_LAYOUT_5POINT0_BACK,
+  CHANNEL_LAYOUT_5_0_BACK,
 
   // Front L, Front R, Front C, Back L, Back R, LFE
-  CHANNEL_LAYOUT_5POINT1_BACK,
+  CHANNEL_LAYOUT_5_1_BACK,
 
   // Front L, Front R, Front C, Side L, Side R, Back L, Back R
-  CHANNEL_LAYOUT_7POINT0,
+  CHANNEL_LAYOUT_7_0,
 
   // Front L, Front R, Front C, Side L, Side R, LFE, Back L, Back R
-  CHANNEL_LAYOUT_7POINT1,
+  CHANNEL_LAYOUT_7_1,
 
   // Front L, Front R, Front C, Back L, Back R, LFE, Front LofC, Front RofC
-  CHANNEL_LAYOUT_7POINT1_WIDE,
+  CHANNEL_LAYOUT_7_1_WIDE,
 
   // Stereo L, Stereo R
   CHANNEL_LAYOUT_STEREO_DOWNMIX,
 
   // Total number of layouts.
   CHANNEL_LAYOUT_MAX
 };
 
 enum Channels {
   LEFT = 0,
@@ skipping 17 matching lines @@
 // left side surround sound channel in FFmpeg's 5.1 layout is in the 5th
 // position (because the order is L, R, C, LFE, LS, RS), so
 // kChannelOrderings[CHANNEL_LAYOUT_5POINT1][SIDE_LEFT] = 4;
 // Values of -1 mean the channel at that index is not used for that layout.
 extern const int kChannelOrderings[CHANNEL_LAYOUT_MAX][CHANNELS_MAX];
 
 // Returns the number of channels in a given ChannelLayout.
 MEDIA_EXPORT int ChannelLayoutToChannelCount(ChannelLayout layout);
 
 #endif  // MEDIA_BASE_CHANNEL_LAYOUT_H_