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/*
* Copyright (C) 2013 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "third_party/blink/renderer/modules/speech/speech_synthesis_utterance.h"
#include "third_party/blink/renderer/core/execution_context/execution_context.h"
#include "third_party/blink/renderer/modules/speech/speech_synthesis.h"
#include "third_party/blink/renderer/platform/heap/garbage_collected.h"
#include "third_party/blink/renderer/platform/heap/persistent.h"
#include "third_party/blink/renderer/platform/wtf/functional.h"
namespace blink {
SpeechSynthesisUtterance* SpeechSynthesisUtterance::Create(
ExecutionContext* context) {
return MakeGarbageCollected<SpeechSynthesisUtterance>(context, String());
}
SpeechSynthesisUtterance* SpeechSynthesisUtterance::Create(
ExecutionContext* context,
const String& text) {
return MakeGarbageCollected<SpeechSynthesisUtterance>(context, text);
}
SpeechSynthesisUtterance::SpeechSynthesisUtterance(ExecutionContext* context,
const String& text)
: ExecutionContextClient(context),
receiver_(this, context),
mojom_utterance_(mojom::blink::SpeechSynthesisUtterance::New()) {
// Set default values. |voice| intentionally left null.
mojom_utterance_->text = text;
mojom_utterance_->lang = g_empty_string;
mojom_utterance_->volume = mojom::blink::kSpeechSynthesisDoublePrefNotSet;
mojom_utterance_->rate = mojom::blink::kSpeechSynthesisDoublePrefNotSet;
mojom_utterance_->pitch = mojom::blink::kSpeechSynthesisDoublePrefNotSet;
}
SpeechSynthesisUtterance::~SpeechSynthesisUtterance() = default;
const AtomicString& SpeechSynthesisUtterance::InterfaceName() const {
return event_target_names::kSpeechSynthesisUtterance;
}
SpeechSynthesisVoice* SpeechSynthesisUtterance::voice() const {
return voice_.Get();
}
void SpeechSynthesisUtterance::setVoice(SpeechSynthesisVoice* voice) {
// Cache our own version of the SpeechSynthesisVoice so that we don't have to
// do some lookup to go from the platform voice back to the speech synthesis
// voice in the read property.
voice_ = voice;
mojom_utterance_->voice = voice_ ? voice_->name() : String();
}
float SpeechSynthesisUtterance::volume() const {
return mojom_utterance_->volume ==
mojom::blink::kSpeechSynthesisDoublePrefNotSet
? mojom::blink::kSpeechSynthesisDefaultVolume
: mojom_utterance_->volume;
}
float SpeechSynthesisUtterance::rate() const {
return mojom_utterance_->rate ==
mojom::blink::kSpeechSynthesisDoublePrefNotSet
? mojom::blink::kSpeechSynthesisDefaultRate
: mojom_utterance_->rate;
}
float SpeechSynthesisUtterance::pitch() const {
return mojom_utterance_->pitch ==
mojom::blink::kSpeechSynthesisDoublePrefNotSet
? mojom::blink::kSpeechSynthesisDefaultPitch
: mojom_utterance_->pitch;
}
void SpeechSynthesisUtterance::Trace(Visitor* visitor) const {
visitor->Trace(receiver_);
visitor->Trace(synthesis_);
visitor->Trace(voice_);
ExecutionContextClient::Trace(visitor);
EventTarget::Trace(visitor);
}
void SpeechSynthesisUtterance::OnStartedSpeaking() {
DCHECK(synthesis_);
synthesis_->DidStartSpeaking(this);
}
void SpeechSynthesisUtterance::OnFinishedSpeaking(
mojom::blink::SpeechSynthesisErrorCode error_code) {
DCHECK(synthesis_);
finished_ = true;
synthesis_->DidFinishSpeaking(this, error_code);
}
void SpeechSynthesisUtterance::OnPausedSpeaking() {
DCHECK(synthesis_);
synthesis_->DidPauseSpeaking(this);
}
void SpeechSynthesisUtterance::OnResumedSpeaking() {
DCHECK(synthesis_);
synthesis_->DidResumeSpeaking(this);
}
void SpeechSynthesisUtterance::OnEncounteredWordBoundary(uint32_t char_index,
uint32_t char_length) {
DCHECK(synthesis_);
synthesis_->WordBoundaryEventOccurred(this, char_index, char_length);
}
void SpeechSynthesisUtterance::OnEncounteredSentenceBoundary(
uint32_t char_index,
uint32_t char_length) {
DCHECK(synthesis_);
synthesis_->SentenceBoundaryEventOccurred(this, char_index, char_length);
}
void SpeechSynthesisUtterance::OnEncounteredSpeakingError() {
DCHECK(synthesis_);
finished_ = true;
synthesis_->SpeakingErrorOccurred(this);
}
void SpeechSynthesisUtterance::Start(SpeechSynthesis* synthesis) {
ExecutionContext* context = GetExecutionContext();
if (!context)
return;
finished_ = false;
mojom::blink::SpeechSynthesisUtterancePtr mojom_utterance_to_send =
mojom_utterance_->Clone();
if (mojom_utterance_to_send->voice.IsNull())
mojom_utterance_to_send->voice = g_empty_string;
if (mojom_utterance_to_send->text.IsNull())
mojom_utterance_to_send->text = g_empty_string;
receiver_.reset();
synthesis_ = synthesis;
synthesis_->MojomSynthesis()->Speak(
std::move(mojom_utterance_to_send),
receiver_.BindNewPipeAndPassRemote(
context->GetTaskRunner(TaskType::kMiscPlatformAPI)));
// Add a disconnect handler so we can cleanup appropriately.
receiver_.set_disconnect_handler(WTF::BindOnce(
&SpeechSynthesisUtterance::OnDisconnected, WrapWeakPersistent(this)));
}
void SpeechSynthesisUtterance::OnDisconnected() {
// If the remote end disconnects, just simulate that we finished normally.
if (!finished_)
OnFinishedSpeaking(mojom::blink::SpeechSynthesisErrorCode::kNoError);
}
} // namespace blink
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