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// Copyright (c) 2013 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/tts_android.h"
#include <string>
#include "base/android/jni_string.h"
#include "base/memory/singleton.h"
#include "base/strings/utf_string_conversions.h"
#include "chrome/browser/speech/tts_controller.h"
#include "jni/TtsPlatformImpl_jni.h"
using base::android::AttachCurrentThread;
// static
TtsPlatformImpl* TtsPlatformImpl::GetInstance() {
return TtsPlatformImplAndroid::GetInstance();
}
TtsPlatformImplAndroid::TtsPlatformImplAndroid()
: utterance_id_(0) {
JNIEnv* env = AttachCurrentThread();
java_ref_.Reset(
Java_TtsPlatformImpl_create(env,
reinterpret_cast<intptr_t>(this),
base::android::GetApplicationContext()));
}
TtsPlatformImplAndroid::~TtsPlatformImplAndroid() {
JNIEnv* env = AttachCurrentThread();
Java_TtsPlatformImpl_destroy(env, java_ref_.obj());
}
bool TtsPlatformImplAndroid::PlatformImplAvailable() {
return true;
}
bool TtsPlatformImplAndroid::Speak(
int utterance_id,
const std::string& utterance,
const std::string& lang,
const VoiceData& voice,
const UtteranceContinuousParameters& params) {
JNIEnv* env = AttachCurrentThread();
jboolean success = Java_TtsPlatformImpl_speak(
env, java_ref_.obj(),
utterance_id,
base::android::ConvertUTF8ToJavaString(env, utterance).Release(),
base::android::ConvertUTF8ToJavaString(env, lang).Release(),
params.rate, params.pitch, params.volume);
if (!success)
return false;
utterance_ = utterance;
utterance_id_ = utterance_id;
return true;
}
bool TtsPlatformImplAndroid::StopSpeaking() {
JNIEnv* env = AttachCurrentThread();
Java_TtsPlatformImpl_stop(env, java_ref_.obj());
utterance_id_ = 0;
utterance_.clear();
return true;
}
void TtsPlatformImplAndroid::Pause() {
StopSpeaking();
}
void TtsPlatformImplAndroid::Resume() {
}
bool TtsPlatformImplAndroid::IsSpeaking() {
return (utterance_id_ != 0);
}
void TtsPlatformImplAndroid::GetVoices(
std::vector<VoiceData>* out_voices) {
JNIEnv* env = AttachCurrentThread();
if (!Java_TtsPlatformImpl_isInitialized(env, java_ref_.obj()))
return;
int count = Java_TtsPlatformImpl_getVoiceCount(env, java_ref_.obj());
for (int i = 0; i < count; ++i) {
out_voices->push_back(VoiceData());
VoiceData& data = out_voices->back();
data.native = true;
data.name = base::android::ConvertJavaStringToUTF8(
Java_TtsPlatformImpl_getVoiceName(env, java_ref_.obj(), i));
data.lang = base::android::ConvertJavaStringToUTF8(
Java_TtsPlatformImpl_getVoiceLanguage(env, java_ref_.obj(), i));
data.gender = TTS_GENDER_NONE;
data.events.insert(TTS_EVENT_START);
data.events.insert(TTS_EVENT_END);
data.events.insert(TTS_EVENT_ERROR);
}
}
void TtsPlatformImplAndroid::VoicesChanged(JNIEnv* env, jobject obj) {
TtsController::GetInstance()->VoicesChanged();
}
void TtsPlatformImplAndroid::OnEndEvent(
JNIEnv* env, jobject obj, jint utterance_id) {
SendFinalTtsEvent(utterance_id, TTS_EVENT_END,
static_cast<int>(utterance_.size()));
}
void TtsPlatformImplAndroid::OnErrorEvent(
JNIEnv* env, jobject obj, jint utterance_id) {
SendFinalTtsEvent(utterance_id, TTS_EVENT_ERROR, 0);
}
void TtsPlatformImplAndroid::OnStartEvent(
JNIEnv* env, jobject obj, jint utterance_id) {
if (utterance_id != utterance_id_)
return;
TtsController::GetInstance()->OnTtsEvent(
utterance_id_, TTS_EVENT_START, 0, std::string());
}
void TtsPlatformImplAndroid::SendFinalTtsEvent(
int utterance_id, TtsEventType event_type, int char_index) {
if (utterance_id != utterance_id_)
return;
TtsController::GetInstance()->OnTtsEvent(
utterance_id_, event_type, char_index, std::string());
utterance_id_ = 0;
utterance_.clear();
}
// static
TtsPlatformImplAndroid* TtsPlatformImplAndroid::GetInstance() {
return Singleton<TtsPlatformImplAndroid,
LeakySingletonTraits<TtsPlatformImplAndroid> >::get();
}
// static
bool TtsPlatformImplAndroid::Register(JNIEnv* env) {
return RegisterNativesImpl(env);
}
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