Nightlies and iOS sound input

beginners
#1

I am trying to mobe to nightlies as suggested by the forum post, I want to use sound input for iOS, but there is an issue I dont understand.

When the bool ofxiOSSoundStream::setup(const ofSoundStreamSettings & settings)
function runs it has an error:

Thread 1: EXC_BAD_ACCESS (code=1, address=0x464630b96110)

On this line:

        [(__bridge SoundInputStream *)soundInputStream start];

Does anyone have any clues as to how to solve this?

#2

Ahh I wonder if its a permissions issue with the plist - you might need to add the microphone capability as described here:

#3

Seemingly the plist does nto trigger a request for access, I had to add some code do do that, I tried in a few ways but something like this worked:

bool ofxiOSSoundStream::setup(const ofSoundStreamSettings & settings) {
    close();
    
    microphonePermissionGranted = false;
    AVAudioSessionRecordPermission permissionStatus = [[AVAudioSession sharedInstance] recordPermission];
    if (permissionStatus == AVAudioSessionRecordPermissionGranted) {
        microphonePermissionGranted = true;
        ofLogVerbose("ofxiOSSoundStream") << "Has mic permission";
    } else if (permissionStatus == AVAudioSessionRecordPermissionDenied) {
        microphonePermissionGranted = false;
        ofLogVerbose("ofxiOSSoundStream") << "No mic permission";
    } else {
        AVAudioSession *audioSession = [AVAudioSession sharedInstance];
        [audioSession requestRecordPermission:^(BOOL granted) {
            microphonePermissionGranted = granted;
            ofLogVerbose("ofxiOSSoundStream") << "Asked for and got mic permission";
        }];
    }
    
    if(microphonePermissionGranted) {
        this->settings = settings;
        
        
        if(settings.numInputChannels > 0) {
            soundInputStream = (__bridge void *)[[SoundInputStream alloc] initWithNumOfChannels:settings.numInputChannels
                                                                                 withSampleRate:settings.sampleRate
                                                                                 withBufferSize:settings.bufferSize];
            ofxiOSSoundStreamDelegate * delegate = [[ofxiOSSoundStreamDelegate alloc] initWithSoundInputFn:settings.inCallback];
            
            
            ((__bridge SoundInputStream *)soundInputStream).delegate = delegate;
            [(__bridge SoundInputStream *)soundInputStream start];
        }
        
        if(settings.numOutputChannels > 0) {
            soundOutputStream = (__bridge void *)[[SoundOutputStream alloc] initWithNumOfChannels:settings.numOutputChannels
                                                                                   withSampleRate:settings.sampleRate
                                                                                   withBufferSize:settings.bufferSize];
            ofxiOSSoundStreamDelegate * delegate = [[ofxiOSSoundStreamDelegate alloc] initWithSoundOutputFn:settings.outCallback];
            ((__bridge SoundInputStream *)soundOutputStream).delegate = delegate;
            [(__bridge SoundInputStream *)soundOutputStream start];
        }
        
        bool bOk = (soundInputStream != NULL) || (soundOutputStream != NULL);
        return bOk;
    }
    else{
        return false;
    }
}

The app then asked for permission on run (before the soundstream was initialised) but crashed as described above.

#4

With some help I managed to get this going. I’m not sure if this a perfect solution but it helped me.

#5

hey @fresla can you please test it again with the current master or tomorrow nightly? thanks

#6

Hi, yes the recent fixes work for me, soundstream input and output work as do the sound players. I do see the same issue as you meontioned on github, the playback level of the file is low when the soundstream input is active. Otherwise it is all working well.