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/*
* Copyright (C) 2012 Google 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:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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 THE COPYRIGHT HOLDERS ``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 THE COPYRIGHT OWNER 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.
*/
#ifndef THIRD_PARTY_BLINK_RENDERER_MODULES_SPEECH_SPEECH_RECOGNITION_H_
#define THIRD_PARTY_BLINK_RENDERER_MODULES_SPEECH_SPEECH_RECOGNITION_H_
#include "media/base/audio_parameters.h"
#include "media/mojo/mojom/speech_recognizer.mojom-blink.h"
#include "third_party/blink/public/platform/web_private_ptr.h"
#include "third_party/blink/renderer/bindings/core/v8/active_script_wrappable.h"
#include "third_party/blink/renderer/bindings/core/v8/idl_types.h"
#include "third_party/blink/renderer/bindings/core/v8/script_promise.h"
#include "third_party/blink/renderer/bindings/core/v8/script_promise_resolver.h"
#include "third_party/blink/renderer/bindings/modules/v8/v8_availability_status.h"
#include "third_party/blink/renderer/bindings/modules/v8/v8_speech_recognition_mode.h"
#include "third_party/blink/renderer/core/execution_context/execution_context_lifecycle_observer.h"
#include "third_party/blink/renderer/core/page/page_visibility_observer.h"
#include "third_party/blink/renderer/modules/event_target_modules.h"
#include "third_party/blink/renderer/modules/modules_export.h"
#include "third_party/blink/renderer/modules/speech/speech_grammar_list.h"
#include "third_party/blink/renderer/modules/speech/speech_recognition_phrase_list.h"
#include "third_party/blink/renderer/modules/speech/speech_recognition_result.h"
#include "third_party/blink/renderer/platform/heap/garbage_collected.h"
#include "third_party/blink/renderer/platform/mojo/heap_mojo_receiver.h"
#include "third_party/blink/renderer/platform/mojo/heap_mojo_remote.h"
#include "third_party/blink/renderer/platform/wtf/text/wtf_string.h"
namespace media {
class AudioParameters;
} // namespace media
namespace blink {
class ExceptionState;
class ExecutionContext;
class LocalDOMWindow;
class MediaStreamTrack;
class SpeechRecognitionController;
class MODULES_EXPORT SpeechRecognition final
: public EventTarget,
public ActiveScriptWrappable<SpeechRecognition>,
public ExecutionContextLifecycleObserver,
public media::mojom::blink::SpeechRecognitionSessionClient,
public PageVisibilityObserver {
DEFINE_WRAPPERTYPEINFO();
public:
static SpeechRecognition* Create(ExecutionContext*);
SpeechRecognition(LocalDOMWindow*);
~SpeechRecognition() override;
// SpeechRecognition.idl attributes implementation.
SpeechGrammarList* grammars() const { return grammars_.Get(); }
void setGrammars(SpeechGrammarList* grammars) { grammars_ = grammars; }
SpeechRecognitionPhraseList* phrases() const { return phrases_.Get(); }
void setPhrases(SpeechRecognitionPhraseList* phrases);
String lang() const { return lang_; }
void setLang(const String& lang) { lang_ = lang; }
bool continuous() const { return continuous_; }
void setContinuous(bool continuous) { continuous_ = continuous; }
bool interimResults() const { return interim_results_; }
void setInterimResults(bool interim_results) {
interim_results_ = interim_results;
}
unsigned maxAlternatives() const { return max_alternatives_; }
void setMaxAlternatives(unsigned max_alternatives) {
max_alternatives_ = max_alternatives;
}
V8SpeechRecognitionMode mode() const { return mode_; }
void setMode(const V8SpeechRecognitionMode& mode);
// Callable by the user. Methods may be called after the execution context is
// destroyed.
void start(ExceptionState&);
void start(MediaStreamTrack*, ExceptionState&);
void stopFunction();
void abort();
static ScriptPromise<V8AvailabilityStatus>
availableOnDevice(ScriptState*, const String& lang, ExceptionState&);
static ScriptPromise<IDLBoolean> installOnDevice(ScriptState*,
const String& lang,
ExceptionState&);
// media::mojom::blink::SpeechRecognitionSessionClient
void ResultRetrieved(
WTF::Vector<media::mojom::blink::WebSpeechRecognitionResultPtr> results)
override;
void ErrorOccurred(
media::mojom::blink::SpeechRecognitionErrorPtr error) override;
void Started() override;
void AudioStarted() override;
void SoundStarted() override;
void SoundEnded() override;
void AudioEnded() override;
void Ended() override;
// EventTarget
const AtomicString& InterfaceName() const override;
ExecutionContext* GetExecutionContext() const override;
// ScriptWrappable
bool HasPendingActivity() const final;
// ExecutionContextLifecycleObserver
void ContextDestroyed() override;
// PageVisibilityObserver
void PageVisibilityChanged() override;
DEFINE_ATTRIBUTE_EVENT_LISTENER(audiostart, kAudiostart)
DEFINE_ATTRIBUTE_EVENT_LISTENER(soundstart, kSoundstart)
DEFINE_ATTRIBUTE_EVENT_LISTENER(speechstart, kSpeechstart)
DEFINE_ATTRIBUTE_EVENT_LISTENER(speechend, kSpeechend)
DEFINE_ATTRIBUTE_EVENT_LISTENER(soundend, kSoundend)
DEFINE_ATTRIBUTE_EVENT_LISTENER(audioend, kAudioend)
DEFINE_ATTRIBUTE_EVENT_LISTENER(result, kResult)
DEFINE_ATTRIBUTE_EVENT_LISTENER(nomatch, kNomatch)
DEFINE_ATTRIBUTE_EVENT_LISTENER(error, kError)
DEFINE_ATTRIBUTE_EVENT_LISTENER(start, kStart)
DEFINE_ATTRIBUTE_EVENT_LISTENER(end, kEnd)
void Trace(Visitor*) const override;
private:
void OnConnectionError();
void CheckAvailabilityAndStart(ExceptionState* exception_state);
void StartInternal();
void StartController(
mojo::PendingReceiver<media::mojom::blink::SpeechRecognitionSession>
session_receiver,
std::optional<media::AudioParameters> audio_parameters = std::nullopt,
mojo::PendingReceiver<
media::mojom::blink::SpeechRecognitionAudioForwarder>
audio_forwarder_receiver = mojo::NullReceiver());
Member<MediaStreamTrack> stream_track_;
Member<SpeechGrammarList> grammars_;
Member<SpeechRecognitionPhraseList> phrases_;
String lang_;
bool continuous_ = false;
bool interim_results_ = false;
uint32_t max_alternatives_ = 1;
V8SpeechRecognitionMode mode_ = V8SpeechRecognitionMode{
V8SpeechRecognitionMode::Enum::kOndevicePreferred};
Member<SpeechRecognitionController> controller_;
bool started_ = false;
bool stopping_ = false;
HeapVector<Member<SpeechRecognitionResult>> final_results_;
HeapMojoReceiver<media::mojom::blink::SpeechRecognitionSessionClient,
SpeechRecognition>
receiver_;
HeapMojoRemote<media::mojom::blink::SpeechRecognitionSession> session_;
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_MODULES_SPEECH_SPEECH_RECOGNITION_H_
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