Refactor SpeechInputManager between chrome/ and content/.

content/browser/speech/speech_input_manager.cc

 // 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.
 
 #include "content/browser/speech/speech_input_manager.h"
 
 #include "content/browser/browser_thread.h"
 #include "media/audio/audio_manager.h"
 
 namespace speech_input {
 
-SpeechInputManager::SpeechInputManager() : censor_results_(true) {
+SpeechInputManager::SpeechInputManager()
+    : can_report_metrics_(false),
+      censor_results_(true),
+      recording_caller_id_(0) {
 }
 
 SpeechInputManager::~SpeechInputManager() {
+  while (requests_.begin() != requests_.end())
+    CancelRecognition(requests_.begin()->first);
+}
+
+bool SpeechInputManager::HasPendingRequest(int caller_id) const {
+  return requests_.find(caller_id) != requests_.end();
+}
+
+SpeechInputManagerDelegate* SpeechInputManager::GetDelegate(
+    int caller_id) const {
+  return requests_.find(caller_id)->second.delegate;
 }
 
 void SpeechInputManager::ShowAudioInputSettings() {
   // Since AudioManager::ShowAudioInputSettings can potentially launch external
   // processes, do that in the FILE thread to not block the calling threads.
   if (!BrowserThread::CurrentlyOn(BrowserThread::FILE)) {
     BrowserThread::PostTask(
         BrowserThread::FILE, FROM_HERE,
         NewRunnableFunction(&SpeechInputManager::ShowAudioInputSettings));
     return;
   }
 
   DCHECK(AudioManager::GetAudioManager()->CanShowAudioInputSettings());
   if (AudioManager::GetAudioManager()->CanShowAudioInputSettings())
     AudioManager::GetAudioManager()->ShowAudioInputSettings();
 }
 
+void SpeechInputManager::StartRecognition(
+    SpeechInputManagerDelegate* delegate,
+    int caller_id,
+    int render_process_id,
+    int render_view_id,
+    const gfx::Rect& element_rect,
+    const std::string& language,
+    const std::string& grammar,
+    const std::string& origin_url) {
+  DCHECK(!HasPendingRequest(caller_id));
+
+  ShowRecognitionRequested(
+      caller_id, render_process_id, render_view_id, element_rect);
+  GetRequestInfo(&can_report_metrics_, &request_info_);
+
+  SpeechInputRequest* request = &requests_[caller_id];
+  request->delegate = delegate;
+  request->recognizer = new SpeechRecognizer(
+      this, caller_id, language, grammar, censor_results(),
+      request_info_, can_report_metrics_ ? origin_url : "");
+  request->is_active = false;
+
+  StartRecognitionForRequest(caller_id);
+}
+
+void SpeechInputManager::StartRecognitionForRequest(int caller_id) {
+  DCHECK(HasPendingRequest(caller_id));
+
+  // If we are currently recording audio for another caller, abort that cleanly.
+  if (recording_caller_id_)
+    CancelRecognitionAndInformDelegate(recording_caller_id_);
+
+  if (!AudioManager::GetAudioManager()->HasAudioInputDevices()) {
+    ShowNoMicError(caller_id);
+  } else {
+    recording_caller_id_ = caller_id;
+    requests_[caller_id].is_active = true;
+    requests_[caller_id].recognizer->StartRecording();
+    ShowWarmUp(caller_id);
+  }
+}
+
+void SpeechInputManager::CancelRecognition(int caller_id) {
+  DCHECK(HasPendingRequest(caller_id));
+  if (requests_[caller_id].is_active)
+    requests_[caller_id].recognizer->CancelRecognition();
+  requests_.erase(caller_id);
+  if (recording_caller_id_ == caller_id)
+    recording_caller_id_ = 0;
+  DoClose(caller_id);
+}
+
+void SpeechInputManager::CancelAllRequestsWithDelegate(
+    SpeechInputManagerDelegate* delegate) {
+  SpeechRecognizerMap::iterator it = requests_.begin();
+  while (it != requests_.end()) {
+    if (it->second.delegate == delegate) {
+      CancelRecognition(it->first);
+      // This map will have very few elements so it is simpler to restart.
+      it = requests_.begin();
+    } else {
+      ++it;
+    }
+  }
+}
+
+void SpeechInputManager::StopRecording(int caller_id) {
+  DCHECK(HasPendingRequest(caller_id));
+  requests_[caller_id].recognizer->StopRecording();
+}
+
+void SpeechInputManager::SetRecognitionResult(
+    int caller_id, bool error, const SpeechInputResultArray& result) {
+  DCHECK(HasPendingRequest(caller_id));
+  GetDelegate(caller_id)->SetRecognitionResult(caller_id, result);
+}
+
+void SpeechInputManager::DidCompleteRecording(int caller_id) {
+  DCHECK(recording_caller_id_ == caller_id);
+  DCHECK(HasPendingRequest(caller_id));
+  recording_caller_id_ = 0;
+  GetDelegate(caller_id)->DidCompleteRecording(caller_id);
+  ShowRecognizing(caller_id);
+}
+
+void SpeechInputManager::DidCompleteRecognition(int caller_id) {
+  GetDelegate(caller_id)->DidCompleteRecognition(caller_id);
+  requests_.erase(caller_id);
+  DoClose(caller_id);
+}
+
+void SpeechInputManager::OnRecognizerError(
+    int caller_id, SpeechRecognizer::ErrorCode error) {
+  if (caller_id == recording_caller_id_)
+    recording_caller_id_ = 0;
+  requests_[caller_id].is_active = false;
+  ShowRecognizerError(caller_id, error);
+}
+
+void SpeechInputManager::DidStartReceivingAudio(int caller_id) {
+  DCHECK(HasPendingRequest(caller_id));
+  DCHECK(recording_caller_id_ == caller_id);
+  ShowRecording(caller_id);
+}
+
+void SpeechInputManager::DidCompleteEnvironmentEstimation(int caller_id) {
+  DCHECK(HasPendingRequest(caller_id));
+  DCHECK(recording_caller_id_ == caller_id);
+}
+
+void SpeechInputManager::SetInputVolume(int caller_id, float volume,
+                                        float noise_volume) {
+  DCHECK(HasPendingRequest(caller_id));
+  DCHECK_EQ(recording_caller_id_, caller_id);
+  ShowInputVolume(caller_id, volume, noise_volume);
+}
+
+void SpeechInputManager::CancelRecognitionAndInformDelegate(
+    int caller_id) {
+  SpeechInputManagerDelegate* cur_delegate = GetDelegate(caller_id);
+  CancelRecognition(caller_id);
+  cur_delegate->DidCompleteRecording(caller_id);
+  cur_delegate->DidCompleteRecognition(caller_id);
+}
+
+void SpeechInputManager::OnFocusChanged(int caller_id) {
+  // Ignore if the caller id was not in our active recognizers list because the
+  // user might have clicked more than once, or recognition could have been
+  // ended due to other reasons before the user click was processed.
+  if (HasPendingRequest(caller_id)) {
+    // If this is an ongoing recording or if we were displaying an error message
+    // to the user, abort it since user has switched focus. Otherwise
+    // recognition has started and keep that going so user can start speaking to
+    // another element while this gets the results in parallel.
+    if (recording_caller_id_ == caller_id || !requests_[caller_id].is_active) {
+      CancelRecognitionAndInformDelegate(caller_id);
+    }
+  }
+}
+
 }  // namespace speech_input