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// 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()
: 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);
}
}
}
SpeechInputManager::SpeechInputRequest::SpeechInputRequest()
: delegate(NULL),
is_active(false) {
}
SpeechInputManager::SpeechInputRequest::~SpeechInputRequest() {
}
} // namespace speech_input
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