100 lines
3.4 KiB
Objective-C
100 lines
3.4 KiB
Objective-C
/*
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Copyright (c) 2015, Apple Inc. All rights reserved.
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Redistribution and use in source and binary forms, with or without modification,
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are permitted provided that the following conditions are met:
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1. Redistributions of source code must retain the above copyright notice, this
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list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright notice,
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this list of conditions and the following disclaimer in the documentation and/or
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other materials provided with the distribution.
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3. Neither the name of the copyright holder(s) nor the names of any contributors
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may be used to endorse or promote products derived from this software without
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specific prior written permission. No license is granted to the trademarks of
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the copyright holders even if such marks are included in this software.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
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FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#import "ORKVoiceEngine.h"
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#import "ORKVoiceEngine_Internal.h"
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#import "ORKHelpers_Internal.h"
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@implementation ORKVoiceEngine
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+ (ORKVoiceEngine *)sharedVoiceEngine {
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static ORKVoiceEngine *sharedVoiceEngine;
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static dispatch_once_t onceToken;
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dispatch_once(&onceToken, ^{
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sharedVoiceEngine = [ORKVoiceEngine new];
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});
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return sharedVoiceEngine;
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}
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- (instancetype)init {
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self = [super init];
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if (self) {
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_speechSynthesizer = [[AVSpeechSynthesizer alloc] init];
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self.speechSynthesizer.delegate = self;
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}
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return self;
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}
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- (void)dealloc {
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[self.speechSynthesizer stopSpeakingAtBoundary:AVSpeechBoundaryImmediate];
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self.speechSynthesizer.delegate = nil;
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}
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- (void)speakText:(NSString *)text {
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if (self.speechSynthesizer.isSpeaking) {
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[self stopTalking];
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}
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if (UIAccessibilityIsVoiceOverRunning()) {
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UIAccessibilityPostNotification(UIAccessibilityAnnouncementNotification, text);
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return;
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}
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AVSpeechUtterance *utterance = [[AVSpeechUtterance alloc] initWithString:text];
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float speechRate = AVSpeechUtteranceDefaultSpeechRate;
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if (![[NSProcessInfo processInfo] isOperatingSystemAtLeastVersion:(NSOperatingSystemVersion){.majorVersion = 9, .minorVersion = 0, .patchVersion = 0}]) {
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speechRate = AVSpeechUtteranceDefaultSpeechRate / 2.5;
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}
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utterance.rate = speechRate;
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[self.speechSynthesizer speakUtterance:utterance];
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}
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- (void)speakInt:(NSInteger)number {
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[self speakText:[NSString stringWithFormat:@"%ld",(long)number]];
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}
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- (void)stopTalking {
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[self.speechSynthesizer stopSpeakingAtBoundary:AVSpeechBoundaryWord];
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}
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- (void)speechSynthesizer:(AVSpeechSynthesizer *)synthesizer didFinishSpeechUtterance:(AVSpeechUtterance *)utterance {
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}
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- (BOOL)isSpeaking {
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return self.speechSynthesizer.isSpeaking;
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}
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@end
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