Simplified AudioOutputStream interface.

media/audio/simple_sources.cc

 // Copyright (c) 2010 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/simple_sources.h"
 
 #include <algorithm>
 #include <math.h>
 
 #include "base/basictypes.h"
@@ skipping 25 matching lines @@
   int16* sin_tbl = reinterpret_cast<int16*>(dest);
   uint32 len = max_size / sizeof(int16);
   // The table is filled with s(t) = 32768*sin(2PI*f*t).
   for (uint32 ix = 0; ix != len; ++ix) {
     double th = kTwoPi * ix * f;
     sin_tbl[ix] = static_cast<int16>((1 << 15) * sin(th));
   }
   return max_size;
 }
 
-void SineWaveAudioSource::OnClose(AudioOutputStream* stream) {
-}
-
 void SineWaveAudioSource::OnError(AudioOutputStream* stream, int code) {
   NOTREACHED();
 }
 
 //////////////////////////////////////////////////////////////////////////////
 // PushSource implementation.
 
 PushSource::PushSource()
     : buffer_(0, 0) {
 }
 
 PushSource::~PushSource() { }
 
 uint32 PushSource::OnMoreData(
     AudioOutputStream* stream, uint8* dest, uint32 max_size,
     AudioBuffersState buffers_state) {
   return buffer_.Read(dest, max_size);
 }
 
-void PushSource::OnClose(AudioOutputStream* stream) {
-  CleanUp();
-}
-
 void PushSource::OnError(AudioOutputStream* stream, int code) {
   NOTREACHED();
 }
 
 // TODO(cpu): Manage arbitrary large sizes.
 bool PushSource::Write(const void *data, uint32 len) {
   if (len == 0) {
     NOTREACHED();
     return false;
   }
   buffer_.Append(static_cast<const uint8*>(data), len);
   return true;
 }
 
 uint32 PushSource::UnProcessedBytes() {
   return buffer_.forward_bytes();
 }
 
 void PushSource::ClearAll() {
   // Cleanup() will discard all the data.
   CleanUp();
 }
 
 void PushSource::CleanUp() {
   buffer_.Clear();
 }