1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
|
// 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/renderer/tts_dispatcher.h"
#include "base/basictypes.h"
#include "base/strings/utf_string_conversions.h"
#include "chrome/common/tts_messages.h"
#include "chrome/common/tts_utterance_request.h"
#include "content/public/renderer/render_thread.h"
#include "third_party/WebKit/public/platform/WebCString.h"
#include "third_party/WebKit/public/platform/WebSpeechSynthesisUtterance.h"
#include "third_party/WebKit/public/platform/WebSpeechSynthesisVoice.h"
#include "third_party/WebKit/public/platform/WebString.h"
#include "third_party/WebKit/public/platform/WebVector.h"
using content::RenderThread;
using blink::WebSpeechSynthesizerClient;
using blink::WebSpeechSynthesisUtterance;
using blink::WebSpeechSynthesisVoice;
using blink::WebString;
using blink::WebVector;
int TtsDispatcher::next_utterance_id_ = 1;
TtsDispatcher::TtsDispatcher(WebSpeechSynthesizerClient* client)
: synthesizer_client_(client) {
RenderThread::Get()->AddObserver(this);
}
TtsDispatcher::~TtsDispatcher() {
RenderThread::Get()->RemoveObserver(this);
}
bool TtsDispatcher::OnControlMessageReceived(const IPC::Message& message) {
IPC_BEGIN_MESSAGE_MAP(TtsDispatcher, message)
IPC_MESSAGE_HANDLER(TtsMsg_SetVoiceList, OnSetVoiceList)
IPC_MESSAGE_HANDLER(TtsMsg_DidStartSpeaking, OnDidStartSpeaking)
IPC_MESSAGE_HANDLER(TtsMsg_DidFinishSpeaking, OnDidFinishSpeaking)
IPC_MESSAGE_HANDLER(TtsMsg_DidPauseSpeaking, OnDidPauseSpeaking)
IPC_MESSAGE_HANDLER(TtsMsg_DidResumeSpeaking, OnDidResumeSpeaking)
IPC_MESSAGE_HANDLER(TtsMsg_WordBoundary, OnWordBoundary)
IPC_MESSAGE_HANDLER(TtsMsg_SentenceBoundary, OnSentenceBoundary)
IPC_MESSAGE_HANDLER(TtsMsg_MarkerEvent, OnMarkerEvent)
IPC_MESSAGE_HANDLER(TtsMsg_WasInterrupted, OnWasInterrupted)
IPC_MESSAGE_HANDLER(TtsMsg_WasCancelled, OnWasCancelled)
IPC_MESSAGE_HANDLER(TtsMsg_SpeakingErrorOccurred, OnSpeakingErrorOccurred)
IPC_END_MESSAGE_MAP()
// Always return false because there may be multiple TtsDispatchers
// and we want them all to have a chance to handle this message.
return false;
}
void TtsDispatcher::updateVoiceList() {
RenderThread::Get()->Send(new TtsHostMsg_InitializeVoiceList());
}
void TtsDispatcher::speak(const WebSpeechSynthesisUtterance& web_utterance) {
int id = next_utterance_id_++;
utterance_id_map_[id] = web_utterance;
TtsUtteranceRequest utterance;
utterance.id = id;
utterance.text = web_utterance.text().utf8();
utterance.lang = web_utterance.lang().utf8();
utterance.voice = web_utterance.voice().utf8();
utterance.volume = web_utterance.volume();
utterance.rate = web_utterance.rate();
utterance.pitch = web_utterance.pitch();
RenderThread::Get()->Send(new TtsHostMsg_Speak(utterance));
}
void TtsDispatcher::pause() {
RenderThread::Get()->Send(new TtsHostMsg_Pause());
}
void TtsDispatcher::resume() {
RenderThread::Get()->Send(new TtsHostMsg_Resume());
}
void TtsDispatcher::cancel() {
RenderThread::Get()->Send(new TtsHostMsg_Cancel());
}
WebSpeechSynthesisUtterance TtsDispatcher::FindUtterance(int utterance_id) {
base::hash_map<int, WebSpeechSynthesisUtterance>::const_iterator iter =
utterance_id_map_.find(utterance_id);
if (iter == utterance_id_map_.end())
return WebSpeechSynthesisUtterance();
return iter->second;
}
void TtsDispatcher::OnSetVoiceList(const std::vector<TtsVoice>& voices) {
WebVector<WebSpeechSynthesisVoice> out_voices(voices.size());
for (size_t i = 0; i < voices.size(); ++i) {
out_voices[i] = WebSpeechSynthesisVoice();
out_voices[i].setVoiceURI(WebString::fromUTF8(voices[i].voice_uri));
out_voices[i].setName(WebString::fromUTF8(voices[i].name));
out_voices[i].setLanguage(WebString::fromUTF8(voices[i].lang));
out_voices[i].setIsLocalService(voices[i].local_service);
out_voices[i].setIsDefault(voices[i].is_default);
}
synthesizer_client_->setVoiceList(out_voices);
}
void TtsDispatcher::OnDidStartSpeaking(int utterance_id) {
if (utterance_id_map_.find(utterance_id) == utterance_id_map_.end())
return;
WebSpeechSynthesisUtterance utterance = FindUtterance(utterance_id);
if (utterance.isNull())
return;
synthesizer_client_->didStartSpeaking(utterance);
}
void TtsDispatcher::OnDidFinishSpeaking(int utterance_id) {
WebSpeechSynthesisUtterance utterance = FindUtterance(utterance_id);
if (utterance.isNull())
return;
synthesizer_client_->didFinishSpeaking(utterance);
utterance_id_map_.erase(utterance_id);
}
void TtsDispatcher::OnDidPauseSpeaking(int utterance_id) {
WebSpeechSynthesisUtterance utterance = FindUtterance(utterance_id);
if (utterance.isNull())
return;
synthesizer_client_->didPauseSpeaking(utterance);
}
void TtsDispatcher::OnDidResumeSpeaking(int utterance_id) {
WebSpeechSynthesisUtterance utterance = FindUtterance(utterance_id);
if (utterance.isNull())
return;
synthesizer_client_->didResumeSpeaking(utterance);
}
void TtsDispatcher::OnWordBoundary(int utterance_id, int char_index) {
CHECK(char_index >= 0);
WebSpeechSynthesisUtterance utterance = FindUtterance(utterance_id);
if (utterance.isNull())
return;
synthesizer_client_->wordBoundaryEventOccurred(
utterance, static_cast<unsigned>(char_index));
}
void TtsDispatcher::OnSentenceBoundary(int utterance_id, int char_index) {
CHECK(char_index >= 0);
WebSpeechSynthesisUtterance utterance = FindUtterance(utterance_id);
if (utterance.isNull())
return;
synthesizer_client_->sentenceBoundaryEventOccurred(
utterance, static_cast<unsigned>(char_index));
}
void TtsDispatcher::OnMarkerEvent(int utterance_id, int char_index) {
// Not supported yet.
}
void TtsDispatcher::OnWasInterrupted(int utterance_id) {
WebSpeechSynthesisUtterance utterance = FindUtterance(utterance_id);
if (utterance.isNull())
return;
// The web speech API doesn't support "interrupted".
synthesizer_client_->didFinishSpeaking(utterance);
utterance_id_map_.erase(utterance_id);
}
void TtsDispatcher::OnWasCancelled(int utterance_id) {
WebSpeechSynthesisUtterance utterance = FindUtterance(utterance_id);
if (utterance.isNull())
return;
// The web speech API doesn't support "cancelled".
synthesizer_client_->didFinishSpeaking(utterance);
utterance_id_map_.erase(utterance_id);
}
void TtsDispatcher::OnSpeakingErrorOccurred(int utterance_id,
const std::string& error_message) {
WebSpeechSynthesisUtterance utterance = FindUtterance(utterance_id);
if (utterance.isNull())
return;
// The web speech API doesn't support an error message.
synthesizer_client_->speakingErrorOccurred(utterance);
utterance_id_map_.erase(utterance_id);
}
|
