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/****************************************************************************
*
* (c) 2009-2016 QGROUNDCONTROL PROJECT <http://www.qgroundcontrol.org>
*
* QGroundControl is licensed according to the terms in the file
* COPYING.md in the root of the source code directory.
*
****************************************************************************/
/**
* @file
* @brief TTS for iOS
*
* @author Gus Grubba <mavlink@grubba.com>
*
*/
#include <QString>
#include "QGC.h"
#if (defined __ios__) && defined QGC_SPEECH_ENABLED
#import <AVFoundation/AVSpeechSynthesis.h>
class SpeakIOS
{
public:
SpeakIOS ();
~SpeakIOS ();
void speak (QString msg );
private:
AVSpeechSynthesizer *_synth;
};
SpeakIOS::SpeakIOS()
: _synth([[AVSpeechSynthesizer alloc] init])
{
}
SpeakIOS::~SpeakIOS()
{
[_synth release];
}
void SpeakIOS::speak(QString msg)
{
while ([_synth isSpeaking]) {
QGC::SLEEP::msleep(100);
}
NSString *msg_ns = [NSString stringWithCString:msg.toStdString().c_str() encoding:[NSString defaultCStringEncoding]];
AVSpeechUtterance *utterance = [[[AVSpeechUtterance alloc] initWithString: msg_ns] autorelease];
AVSpeechSynthesisVoice* currentVoice = [AVSpeechSynthesisVoice voiceWithLanguage:[AVSpeechSynthesisVoice currentLanguageCode]];
utterance.voice = currentVoice;
utterance.voice = [AVSpeechSynthesisVoice voiceWithLanguage:@"en-US"];
utterance.rate = 0.5;
[_synth speakUtterance:utterance];
}
//-- The one and only static singleton
SpeakIOS kSpeakIOS;
void iOSSpeak(QString msg)
{
kSpeakIOS.speak(msg);
}
#endif