Speech refactoring: Turned AudioChunk into a refcounted class (CL1.4)

content/browser/speech/speech_recognizer_impl.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 "content/browser/speech/speech_recognizer_impl.h"
 
 #include "base/bind.h"
 #include "base/time.h"
 #include "content/browser/browser_main_loop.h"
 #include "content/browser/speech/audio_buffer.h"
@@ skipping 193 matching lines @@
   if (!audio_controller_.get())
     return;
 
   InformErrorAndAbortRecognition(content::SPEECH_RECOGNITION_ERROR_AUDIO);
 }
 
 void SpeechRecognizerImpl::OnData(AudioInputController* controller,
                                   const uint8* data, uint32 size) {
   if (size == 0)  // This could happen when recording stops and is normal.
     return;
-  AudioChunk* raw_audio = new AudioChunk(data, static_cast<size_t>(size),
-                                         kNumBitsPerAudioSample / 8);
+  scoped_refptr<AudioChunk> raw_audio(
+      new AudioChunk(data,
+                     static_cast<size_t>(size),
+                     kNumBitsPerAudioSample / 8));
   BrowserThread::PostTask(BrowserThread::IO, FROM_HERE,
                           base::Bind(&SpeechRecognizerImpl::HandleOnData,
                                      this, raw_audio));
 }
 
-void SpeechRecognizerImpl::HandleOnData(AudioChunk* raw_audio) {
-  scoped_ptr<AudioChunk> free_raw_audio_on_return(raw_audio);
+void SpeechRecognizerImpl::HandleOnData(scoped_refptr<AudioChunk> raw_audio) {
   // Check if we are still recording and if not discard this buffer, as
   // recording might have been stopped after this buffer was posted to the queue
   // by |OnData|.
   if (!audio_controller_.get())
     return;
 
   bool speech_was_heard_before_packet = endpointer_.DidStartReceivingSpeech();
 
   float rms;
   endpointer_.ProcessAudio(*raw_audio, &rms);
@@ skipping 114 matching lines @@
   return *(recognition_engine_.get());
 }
 
 void SpeechRecognizerImpl::SetAudioManagerForTesting(
     AudioManager* audio_manager) {
   testing_audio_manager_ = audio_manager;
 }
 
 
 }  // namespace speech