Source/WebCore/Modules/speech/cocoa/WebSpeechRecognizerTaskMock.mm

/*
 * Copyright (C) 2020 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
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 *
 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
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#import "config.h"
#import "WebSpeechRecognizerTaskMock.h"

#if HAVE(SPEECHRECOGNIZER)

NS_ASSUME_NONNULL_BEGIN

@implementation WebSpeechRecognizerTaskMock

- (instancetype)initWithIdentifier:(WebCore::SpeechRecognitionConnectionClientIdentifier)identifier locale:(NSString*)localeIdentifier doMultipleRecognitions:(BOOL)continuous reportInterimResults:(BOOL)interimResults maxAlternatives:(unsigned long)alternatives delegateCallback:(void(^)(const WebCore::SpeechRecognitionUpdate&))callback
{
    UNUSED_PARAM(localeIdentifier);
    UNUSED_PARAM(interimResults);
    UNUSED_PARAM(alternatives);

    if (!(self = [super init]))
        return nil;

    _doMultipleRecognitions = continuous;
    _identifier = identifier;
    _delegateCallback = callback;
    _completed = false;
    _hasSentSpeechStart = false;
    _hasSentSpeechEnd = false;

    return self;
}

- (void)audioSamplesAvailable:(CMSampleBufferRef)sampleBuffer
{
    UNUSED_PARAM(sampleBuffer);
    
    if (!_hasSentSpeechStart) {
        _hasSentSpeechStart = true;
        _delegateCallback(WebCore::SpeechRecognitionUpdate::create(_identifier, WebCore::SpeechRecognitionUpdateType::SpeechStart));
    }

    // Fake some recognition results.
    WebCore::SpeechRecognitionAlternativeData alternative { "Test"_s, 1.0 };
    _delegateCallback(WebCore::SpeechRecognitionUpdate::createResult(_identifier, { WebCore::SpeechRecognitionResultData { { WTFMove(alternative) }, true } }));

    if (!_doMultipleRecognitions)
        [self abort];
}

- (void)abort
{
    if (_completed)
        return;
    _completed = true;

    if (!_hasSentSpeechEnd && _hasSentSpeechStart) {
        _hasSentSpeechEnd = true;
        _delegateCallback(WebCore::SpeechRecognitionUpdate::create(_identifier, WebCore::SpeechRecognitionUpdateType::SpeechEnd));
    }

    _delegateCallback(WebCore::SpeechRecognitionUpdate::create(_identifier, WebCore::SpeechRecognitionUpdateType::End));
}

- (void)stop
{
    [self abort];
}

@end

NS_ASSUME_NONNULL_END

#endif