Revert 56006 - Revert 56002 - Adds SpeechInputManagerImpl to handle requests ...

chrome/browser/speech/speech_input_manager.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 "chrome/browser/speech/speech_input_manager.h"
 
+#include "base/ref_counted.h"
+#include "chrome/browser/speech/speech_recognizer.h"
+#include <map>
+
 namespace speech_input {
 
-SpeechInputManager* SpeechInputManager::Create(Listener* listener) {
-  // TODO(satish): Implement a real speech input manager.
-  return NULL;
+class SpeechInputManagerImpl : public SpeechInputManager,
+                               public SpeechRecognizerDelegate {
+public:
+  explicit SpeechInputManagerImpl(SpeechInputManagerDelegate* delegate);
+  virtual ~SpeechInputManagerImpl();
+
+  // SpeechInputManager methods.
+  void StartRecognition(int render_view_id);
+  void CancelRecognition(int render_view_id);
+  void StopRecording(int render_view_id);
+
+  // SpeechRecognizer::Delegate methods.
+  void SetRecognitionResult(int render_view_id, bool error,
+                            const string16& value);
+  void DidCompleteRecording(int render_view_id);
+  void DidCompleteRecognition(int render_view_id);
+
+private:
+  SpeechInputManagerDelegate* delegate_;
+  typedef std::map<int, scoped_refptr<SpeechRecognizer> > SpeechRecognizerMap;
+  SpeechRecognizerMap recognizers_;
+  int recording_render_view_id_;
+};
+
+SpeechInputManager* SpeechInputManager::Create(
+    SpeechInputManagerDelegate* delegate) {
+  return new SpeechInputManagerImpl(delegate);
+}
+
+SpeechInputManagerImpl::SpeechInputManagerImpl(
+    SpeechInputManagerDelegate* delegate)
+    : delegate_(delegate),
+      recording_render_view_id_(0) {
+}
+
+SpeechInputManagerImpl::~SpeechInputManagerImpl() {
+  while (recognizers_.begin() != recognizers_.end())
+    recognizers_.begin()->second->CancelRecognition();
+}
+
+void SpeechInputManagerImpl::StartRecognition(int render_view_id) {
+  // Make sure we are not already doing recognition for this render view.
+  DCHECK(recognizers_.find(render_view_id) == recognizers_.end());
+  if (recognizers_.find(render_view_id) != recognizers_.end())
+    return;
+
+  // If we are currently recording audio for another caller, abort that now.
+  if (recording_render_view_id_)
+    CancelRecognition(recording_render_view_id_);
+
+  recording_render_view_id_ = render_view_id;
+  recognizers_[render_view_id] = new SpeechRecognizer(this, render_view_id);
+  recognizers_[render_view_id]->StartRecording();
+}
+
+void SpeechInputManagerImpl::CancelRecognition(int render_view_id) {
+  DCHECK(recognizers_.find(render_view_id) != recognizers_.end());
+  if (recognizers_.find(render_view_id) != recognizers_.end()) {
+    recognizers_[render_view_id]->CancelRecognition();
+  }
+}
+
+void SpeechInputManagerImpl::StopRecording(int render_view_id) {
+  DCHECK(recognizers_.find(render_view_id) != recognizers_.end());
+  if (recognizers_.find(render_view_id) != recognizers_.end()) {
+    recognizers_[render_view_id]->StopRecording();
+  }
+}
+
+void SpeechInputManagerImpl::SetRecognitionResult(int render_view_id,
+                                                  bool error,
+                                                  const string16& value) {
+  delegate_->SetRecognitionResult(render_view_id, (error ? string16() : value));
+}
+
+void SpeechInputManagerImpl::DidCompleteRecording(int render_view_id) {
+  DCHECK(recording_render_view_id_ == render_view_id);
+  recording_render_view_id_ = 0;
+  delegate_->DidCompleteRecording(render_view_id);
+}
+
+void SpeechInputManagerImpl::DidCompleteRecognition(int render_view_id) {
+  recognizers_.erase(render_view_id);
+  delegate_->DidCompleteRecognition(render_view_id);
 }
 
 }  // namespace speech_input