/**************************************************************************/
/* tts_ios.mm */
/**************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/**************************************************************************/
/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of the Software, and to */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/**************************************************************************/
#import "tts_ios.h"
@implementation TTS_IOS
- (id)init {
self = [super init];
self->speaking = false;
self->av_synth = [[AVSpeechSynthesizer alloc] init];
[self->av_synth setDelegate:self];
print_verbose("Text-to-Speech: AVSpeechSynthesizer initialized.");
return self;
}
- (void)speechSynthesizer:(AVSpeechSynthesizer *)av_synth willSpeakRangeOfSpeechString:(NSRange)characterRange utterance:(AVSpeechUtterance *)utterance {
NSString *string = [utterance speechString];
// Convert from UTF-16 to UTF-32 position.
int pos = 0;
for (NSUInteger i = 0; i < MIN(characterRange.location, string.length); i++) {
unichar c = [string characterAtIndex:i];
if ((c & 0xfffffc00) == 0xd800) {
i++;
}
pos++;
}
DisplayServer::get_singleton()->tts_post_utterance_event(DisplayServer::TTS_UTTERANCE_BOUNDARY, ids[utterance], pos);
}
- (void)speechSynthesizer:(AVSpeechSynthesizer *)av_synth didCancelSpeechUtterance:(AVSpeechUtterance *)utterance {
DisplayServer::get_singleton()->tts_post_utterance_event(DisplayServer::TTS_UTTERANCE_CANCELED, ids[utterance]);
ids.erase(utterance);
speaking = false;
[self update];
}
- (void)speechSynthesizer:(AVSpeechSynthesizer *)av_synth didFinishSpeechUtterance:(AVSpeechUtterance *)utterance {
DisplayServer::get_singleton()->tts_post_utterance_event(DisplayServer::TTS_UTTERANCE_ENDED, ids[utterance]);
ids.erase(utterance);
speaking = false;
[self update];
}
- (void)update {
if (!speaking && queue.size() > 0) {
DisplayServer::TTSUtterance &message = queue.front()->get();
AVSpeechUtterance *new_utterance = [[AVSpeechUtterance alloc] initWithString:[NSString stringWithUTF8String:message.text.utf8().get_data()]];
[new_utterance setVoice:[AVSpeechSynthesisVoice voiceWithIdentifier:[NSString stringWithUTF8String:message.voice.utf8().get_data()]]];
if (message.rate > 1.f) {
[new_utterance setRate:Math::remap(message.rate, 1.f, 10.f, AVSpeechUtteranceDefaultSpeechRate, AVSpeechUtteranceMaximumSpeechRate)];
} else if (message.rate < 1.f) {
[new_utterance setRate:Math::remap(message.rate, 0.1f, 1.f, AVSpeechUtteranceMinimumSpeechRate, AVSpeechUtteranceDefaultSpeechRate)];
}
[new_utterance setPitchMultiplier:message.pitch];
[new_utterance setVolume:(Math::remap(message.volume, 0.f, 100.f, 0.f, 1.f))];
ids[new_utterance] = message.id;
[av_synth speakUtterance:new_utterance];
queue.pop_front();
DisplayServer::get_singleton()->tts_post_utterance_event(DisplayServer::TTS_UTTERANCE_STARTED, message.id);
speaking = true;
}
}
- (void)pauseSpeaking {
[av_synth pauseSpeakingAtBoundary:AVSpeechBoundaryImmediate];
}
- (void)resumeSpeaking {
[av_synth continueSpeaking];
}
- (void)stopSpeaking {
for (DisplayServer::TTSUtterance &message : queue) {
DisplayServer::get_singleton()->tts_post_utterance_event(DisplayServer::TTS_UTTERANCE_CANCELED, message.id);
}
queue.clear();
[av_synth stopSpeakingAtBoundary:AVSpeechBoundaryImmediate];
speaking = false;
}
- (bool)isSpeaking {
return speaking || (queue.size() > 0);
}
- (bool)isPaused {
return [av_synth isPaused];
}
- (void)speak:(const String &)text voice:(const String &)voice volume:(int)volume pitch:(float)pitch rate:(float)rate utterance_id:(int)utterance_id interrupt:(bool)interrupt {
if (interrupt) {
[self stopSpeaking];
}
if (text.is_empty()) {
DisplayServer::get_singleton()->tts_post_utterance_event(DisplayServer::TTS_UTTERANCE_CANCELED, utterance_id);
return;
}
DisplayServer::TTSUtterance message;
message.text = text;
message.voice = voice;
message.volume = CLAMP(volume, 0, 100);
message.pitch = CLAMP(pitch, 0.f, 2.f);
message.rate = CLAMP(rate, 0.1f, 10.f);
message.id = utterance_id;
queue.push_back(message);
if ([self isPaused]) {
[self resumeSpeaking];
} else {
[self update];
}
}
- (Array)getVoices {
Array list;
for (AVSpeechSynthesisVoice *voice in [AVSpeechSynthesisVoice speechVoices]) {
NSString *voiceIdentifierString = [voice identifier];
NSString *voiceLocaleIdentifier = [voice language];
NSString *voiceName = [voice name];
Dictionary voice_d;
voice_d["name"] = String::utf8([voiceName UTF8String]);
voice_d["id"] = String::utf8([voiceIdentifierString UTF8String]);
voice_d["language"] = String::utf8([voiceLocaleIdentifier UTF8String]);
list.push_back(voice_d);
}
return list;
}
@end
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