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Unified Diff: chrome/browser/speech/tts_request_handler.cc

Issue 12589005: Implement web speech synthesis. (Closed) Base URL: http://git.chromium.org/chromium/src.git@webtts
Patch Set: Fresh update Created 7 years, 9 months ago
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Index: chrome/browser/speech/tts_request_handler.cc
diff --git a/chrome/browser/speech/tts_request_handler.cc b/chrome/browser/speech/tts_request_handler.cc
new file mode 100644
index 0000000000000000000000000000000000000000..8752e5ba15ef3c19ea5ed8c8fa407c522991279e
--- /dev/null
+++ b/chrome/browser/speech/tts_request_handler.cc
@@ -0,0 +1,130 @@
+// 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_request_handler.h"
+
+#include "base/logging.h"
+#include "chrome/browser/profiles/profile.h"
+#include "chrome/browser/speech/tts_controller.h"
+#include "content/public/browser/browser_context.h"
+
+class TtsRequestEventHandler : public UtteranceEventDelegate {
+ public:
+ explicit TtsRequestEventHandler(content::TtsDispatcherHost* dispatcher_host);
+ virtual void OnTtsEvent(Utterance* utterance,
+ TtsEventType event_type,
+ int char_index,
+ const std::string& error_message) OVERRIDE;
+ private:
+ content::TtsDispatcherHost* dispatcher_host_;
+};
+
+TtsRequestEventHandler::TtsRequestEventHandler(
+ content::TtsDispatcherHost* dispatcher_host)
+ : dispatcher_host_(dispatcher_host) {
+}
+
+void TtsRequestEventHandler::OnTtsEvent(Utterance* utterance,
+ TtsEventType event_type,
+ int char_index,
+ const std::string& error_message) {
+ switch (event_type) {
+ case TTS_EVENT_START:
+ dispatcher_host_->DidStartSpeaking(utterance->src_id());
+ break;
+ case TTS_EVENT_END:
+ dispatcher_host_->DidFinishSpeaking(utterance->src_id());
+ break;
+ case TTS_EVENT_WORD:
+ dispatcher_host_->WordBoundary(
+ utterance->src_id(), char_index);
+ break;
+ case TTS_EVENT_SENTENCE:
+ dispatcher_host_->SentenceBoundary(
+ utterance->src_id(), char_index);
+ break;
+ case TTS_EVENT_MARKER:
+ dispatcher_host_->MarkerEvent(
+ utterance->src_id(), char_index);
+ break;
+ case TTS_EVENT_INTERRUPTED:
+ dispatcher_host_->WasInterrupted(utterance->src_id());
+ break;
+ case TTS_EVENT_CANCELLED:
+ dispatcher_host_->WasCancelled(utterance->src_id());
+ break;
+ case TTS_EVENT_ERROR:
+ dispatcher_host_->SpeakingErrorOccurred(
+ utterance->src_id(), error_message);
+ break;
+ }
+
+ if (utterance->finished())
+ delete this;
+}
+
+
+TtsRequestHandler::TtsRequestHandler() {
+}
+
+TtsRequestHandler::~TtsRequestHandler() {
+}
+
+void TtsRequestHandler::OnInitializeVoiceList(
+ content::TtsDispatcherHost* dispatcher_host) {
+ content::BrowserContext* context = dispatcher_host->GetBrowserContext();
+ Profile* profile = Profile::FromBrowserContext(context);
+ CHECK(profile);
+ TtsController* tts_controller = TtsController::GetInstance();
+ std::vector<VoiceData> voices;
+ tts_controller->GetVoices(profile, &voices);
+
+ std::vector<content::TtsVoice> out_voices;
+ out_voices.resize(voices.size());
+ for (size_t i = 0; i < voices.size(); ++i) {
+ content::TtsVoice& out_voice = out_voices[i];
+ out_voice.voice_uri = voices[i].name;
+ out_voice.name = voices[i].name;
+ out_voice.lang = voices[i].lang;
+ out_voice.local_service = true;
+ out_voice.is_default = (i == 0);
+ }
+ dispatcher_host->SendVoiceList(out_voices);
+}
+
+void TtsRequestHandler::OnSpeak(content::TtsDispatcherHost* dispatcher_host,
+ const content::TtsUtteranceRequest& request) {
+ content::BrowserContext* context = dispatcher_host->GetBrowserContext();
+ Profile* profile = Profile::FromBrowserContext(context);
+ CHECK(profile);
+
+ scoped_ptr<Utterance> utterance(new Utterance(profile));
+ utterance->set_src_id(request.id);
+ utterance->set_text(request.text);
+ utterance->set_lang(request.lang);
+ utterance->set_voice_name(request.voice);
+ utterance->set_can_enqueue(true);
+
+ UtteranceContinuousParameters params;
+ params.rate = request.rate;
+ params.pitch = request.pitch;
+ params.volume = request.volume;
+ utterance->set_continuous_parameters(params);
+
+ utterance->set_event_delegate(new TtsRequestEventHandler(dispatcher_host));
+
+ TtsController::GetInstance()->SpeakOrEnqueue(utterance.release());
+}
+
+void TtsRequestHandler::OnPause(content::TtsDispatcherHost* dispatcher_host) {
+ // TODO(dmazzoni): Not supported by TtsController yet.
+}
+
+void TtsRequestHandler::OnResume(content::TtsDispatcherHost* dispatcher_host) {
+ // TODO(dmazzoni): Not supported by TtsController yet.
+}
+
+void TtsRequestHandler::OnCancel(content::TtsDispatcherHost* dispatcher_host) {
+ TtsController::GetInstance()->Stop();
+}

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