Make AudioParameters a class instead of a struct

media/audio/win/waveout_output_win.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/win/waveout_output_win.h"
 
 #include <windows.h>
 #include <mmsystem.h>
 #pragma comment(lib, "winmm.lib")
 
@@ skipping 66 matching lines @@
 
 PCMWaveOutAudioOutputStream::PCMWaveOutAudioOutputStream(
     AudioManagerWin* manager, const AudioParameters& params, int num_buffers,
     UINT device_id)
     : state_(PCMA_BRAND_NEW),
       manager_(manager),
       device_id_(device_id),
       waveout_(NULL),
       callback_(NULL),
       num_buffers_(num_buffers),
-      buffer_size_(params.GetPacketSize()),
+      buffer_size_(params.GetBytesPerBuffer()),
       volume_(1),
-      channels_(params.channels),
+      channels_(params.channels()),
       pending_bytes_(0) {
   format_.Format.wFormatTag = WAVE_FORMAT_EXTENSIBLE;
-  format_.Format.nChannels = params.channels;
-  format_.Format.nSamplesPerSec = params.sample_rate;
-  format_.Format.wBitsPerSample = params.bits_per_sample;
+  format_.Format.nChannels = params.channels();
+  format_.Format.nSamplesPerSec = params.sample_rate();
+  format_.Format.wBitsPerSample = params.bits_per_sample();
   format_.Format.cbSize = sizeof(format_) - sizeof(WAVEFORMATEX);
   // The next are computed from above.
   format_.Format.nBlockAlign = (format_.Format.nChannels *
                                 format_.Format.wBitsPerSample) / 8;
   format_.Format.nAvgBytesPerSec = format_.Format.nBlockAlign *
                                    format_.Format.nSamplesPerSec;
-  if (params.channels > kMaxChannelsToMask) {
+  if (params.channels() > kMaxChannelsToMask) {
     format_.dwChannelMask = kChannelsToMask[kMaxChannelsToMask];
   } else {
-    format_.dwChannelMask = kChannelsToMask[params.channels];
+    format_.dwChannelMask = kChannelsToMask[params.channels()];
   }
   format_.SubFormat = KSDATAFORMAT_SUBTYPE_PCM;
-  format_.Samples.wValidBitsPerSample = params.bits_per_sample;
+  format_.Samples.wValidBitsPerSample = params.bits_per_sample();
 }
 
 PCMWaveOutAudioOutputStream::~PCMWaveOutAudioOutputStream() {
   DCHECK(NULL == waveout_);
 }
 
 bool PCMWaveOutAudioOutputStream::Open() {
   if (state_ != PCMA_BRAND_NEW)
     return false;
   if (BufferSize() * num_buffers_ > kMaxOpenBufferSize)
@@ skipping 286 matching lines @@
       // the same buffers we can get away without calling waveOutPrepareHeader.
       MMRESULT result = ::waveOutWrite(stream->waveout_,
                                        buffer,
                                        sizeof(WAVEHDR));
       if (result != MMSYSERR_NOERROR)
         stream->HandleError(result);
       stream->pending_bytes_ += buffer->dwBufferLength;
     }
   }
 }