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Diffstat (limited to 'platform/ios/tts_ios.mm')
| -rw-r--r-- | platform/ios/tts_ios.mm | 164 |
1 files changed, 164 insertions, 0 deletions
diff --git a/platform/ios/tts_ios.mm b/platform/ios/tts_ios.mm new file mode 100644 index 0000000000..a079d02add --- /dev/null +++ b/platform/ios/tts_ios.mm @@ -0,0 +1,164 @@ +/*************************************************************************/ +/* tts_ios.mm */ +/*************************************************************************/ +/* This file is part of: */ +/* GODOT ENGINE */ +/* https://godotengine.org */ +/*************************************************************************/ +/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur. */ +/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md). */ +/* */ +/* 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. */ +/*************************************************************************/ + +#include "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::range_lerp(message.rate, 1.f, 10.f, AVSpeechUtteranceDefaultSpeechRate, AVSpeechUtteranceMaximumSpeechRate)]; + } else if (message.rate < 1.f) { + [new_utterance setRate:Math::range_lerp(message.rate, 0.1f, 1.f, AVSpeechUtteranceMinimumSpeechRate, AVSpeechUtteranceDefaultSpeechRate)]; + } + [new_utterance setPitchMultiplier:message.pitch]; + [new_utterance setVolume:(Math::range_lerp(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 |