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// 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_recognition_dispatcher_host.h"
#include "base/bind.h"
#include "base/command_line.h"
#include "base/lazy_instance.h"
#include "content/common/speech_recognition_messages.h"
#include "content/public/browser/speech_recognition_manager.h"
#include "content/public/browser/speech_recognition_preferences.h"
#include "content/public/browser/speech_recognition_session_config.h"
#include "content/public/browser/speech_recognition_session_context.h"
#include "content/public/common/content_switches.h"
namespace content {
SpeechRecognitionManager* SpeechRecognitionDispatcherHost::manager_for_tests_;
void SpeechRecognitionDispatcherHost::SetManagerForTests(
SpeechRecognitionManager* manager) {
manager_for_tests_ = manager;
}
SpeechRecognitionDispatcherHost::SpeechRecognitionDispatcherHost(
int render_process_id,
net::URLRequestContextGetter* context_getter,
SpeechRecognitionPreferences* recognition_preferences)
: render_process_id_(render_process_id),
context_getter_(context_getter),
recognition_preferences_(recognition_preferences) {
// Do not add any non-trivial initialization here, instead do it lazily when
// required (e.g. see the method |manager()|) or add an Init() method.
}
SpeechRecognitionDispatcherHost::~SpeechRecognitionDispatcherHost() {
if (SpeechRecognitionManager* sr_manager = manager())
sr_manager->AbortAllSessionsForListener(this);
}
SpeechRecognitionManager* SpeechRecognitionDispatcherHost::manager() {
if (manager_for_tests_)
return manager_for_tests_;
return SpeechRecognitionManager::GetInstance();
}
bool SpeechRecognitionDispatcherHost::OnMessageReceived(
const IPC::Message& message, bool* message_was_ok) {
bool handled = true;
IPC_BEGIN_MESSAGE_MAP_EX(SpeechRecognitionDispatcherHost, message,
*message_was_ok)
IPC_MESSAGE_HANDLER(SpeechRecognitionHostMsg_StartRequest,
OnStartRequest)
IPC_MESSAGE_HANDLER(SpeechRecognitionHostMsg_AbortRequest,
OnAbortRequest)
IPC_MESSAGE_HANDLER(SpeechRecognitionHostMsg_StopCaptureRequest,
OnStopCaptureRequest)
IPC_MESSAGE_UNHANDLED(handled = false)
IPC_END_MESSAGE_MAP()
return handled;
}
void SpeechRecognitionDispatcherHost::OnStartRequest(
const SpeechRecognitionHostMsg_StartRequest_Params& params) {
SpeechRecognitionSessionContext context;
context.context_name = params.origin_url;
context.render_process_id = render_process_id_;
context.render_view_id = params.render_view_id;
context.request_id = params.request_id;
context.requested_by_page_element = false;
SpeechRecognitionSessionConfig config;
config.is_legacy_api = false;
config.language = params.language;
config.grammars = params.grammars;
config.max_hypotheses = params.max_hypotheses;
config.origin_url = params.origin_url;
config.initial_context = context;
config.url_request_context_getter = context_getter_.get();
if (recognition_preferences_) {
config.filter_profanities = recognition_preferences_->FilterProfanities();
} else {
config.filter_profanities = false;
}
config.continuous = params.continuous;
config.interim_results = params.interim_results;
config.event_listener = this;
int session_id = manager()->CreateSession(config);
DCHECK_NE(session_id, SpeechRecognitionManager::kSessionIDInvalid);
manager()->StartSession(session_id);
}
void SpeechRecognitionDispatcherHost::OnAbortRequest(int render_view_id,
int request_id) {
int session_id = manager()->GetSession(render_process_id_,
render_view_id,
request_id);
// The renderer might provide an invalid |request_id| if the session was not
// started as expected, e.g., due to unsatisfied security requirements.
if (session_id != SpeechRecognitionManager::kSessionIDInvalid)
manager()->AbortSession(session_id);
}
void SpeechRecognitionDispatcherHost::OnStopCaptureRequest(
int render_view_id, int request_id) {
int session_id = manager()->GetSession(render_process_id_,
render_view_id,
request_id);
// The renderer might provide an invalid |request_id| if the session was not
// started as expected, e.g., due to unsatisfied security requirements.
if (session_id != SpeechRecognitionManager::kSessionIDInvalid)
manager()->StopAudioCaptureForSession(session_id);
}
// -------- SpeechRecognitionEventListener interface implementation -----------
void SpeechRecognitionDispatcherHost::OnRecognitionStart(int session_id) {
const SpeechRecognitionSessionContext& context =
manager()->GetSessionContext(session_id);
Send(new SpeechRecognitionMsg_Started(context.render_view_id,
context.request_id));
}
void SpeechRecognitionDispatcherHost::OnAudioStart(int session_id) {
const SpeechRecognitionSessionContext& context =
manager()->GetSessionContext(session_id);
Send(new SpeechRecognitionMsg_AudioStarted(context.render_view_id,
context.request_id));
}
void SpeechRecognitionDispatcherHost::OnSoundStart(int session_id) {
const SpeechRecognitionSessionContext& context =
manager()->GetSessionContext(session_id);
Send(new SpeechRecognitionMsg_SoundStarted(context.render_view_id,
context.request_id));
}
void SpeechRecognitionDispatcherHost::OnSoundEnd(int session_id) {
const SpeechRecognitionSessionContext& context =
manager()->GetSessionContext(session_id);
Send(new SpeechRecognitionMsg_SoundEnded(context.render_view_id,
context.request_id));
}
void SpeechRecognitionDispatcherHost::OnAudioEnd(int session_id) {
const SpeechRecognitionSessionContext& context =
manager()->GetSessionContext(session_id);
Send(new SpeechRecognitionMsg_AudioEnded(context.render_view_id,
context.request_id));
}
void SpeechRecognitionDispatcherHost::OnRecognitionEnd(int session_id) {
const SpeechRecognitionSessionContext& context =
manager()->GetSessionContext(session_id);
Send(new SpeechRecognitionMsg_Ended(context.render_view_id,
context.request_id));
}
void SpeechRecognitionDispatcherHost::OnRecognitionResults(
int session_id,
const SpeechRecognitionResults& results) {
const SpeechRecognitionSessionContext& context =
manager()->GetSessionContext(session_id);
Send(new SpeechRecognitionMsg_ResultRetrieved(context.render_view_id,
context.request_id,
results));
}
void SpeechRecognitionDispatcherHost::OnRecognitionError(
int session_id,
const SpeechRecognitionError& error) {
const SpeechRecognitionSessionContext& context =
manager()->GetSessionContext(session_id);
Send(new SpeechRecognitionMsg_ErrorOccurred(context.render_view_id,
context.request_id,
error));
}
// The events below are currently not used by speech JS APIs implementation.
void SpeechRecognitionDispatcherHost::OnAudioLevelsChange(int session_id,
float volume,
float noise_volume) {
}
void SpeechRecognitionDispatcherHost::OnEnvironmentEstimationComplete(
int session_id) {
}
} // namespace content
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