Hi,
I'm trying to pass audio through from an input directly to the built-in speakers in a macOS app. It's to go along with passing through video to the form. I have successfully populated an AVCaptureDevice object and then initialised an AVCaptureDeviceInput from it. I've then added it as an input to my session. Am I missing something to actually output the session to the speakers though?
Thanks,
Jimmy
-(void) initCaptureSession {
session = [[AVCaptureSession alloc] init];
if ([session canSetSessionPreset : AVCaptureSessionPresetHigh])
[session setSessionPreset : AVCaptureSessionPresetHigh];
if (@available(macOS 10.14, *)) {
if ([AVCaptureDevice authorizationStatusForMediaType: AVMediaTypeVideo] == AVAuthorizationStatusNotDetermined)
{
[AVCaptureDevice requestAccessForMediaType:AVMediaTypeVideo completionHandler:^(BOOL granted) {
if (granted) {
//self.videoConsentState = PrivacyConsentStateGranted;
}
else {
//self.videoConsentState = PrivacyConsentStateDenied;
}}];
}
} else {
// Fallback on earlier versions
}
AVCaptureDevice *device = nil;
AVCaptureDeviceInput *device_input = nil;
NSArray *devices = [AVCaptureDevice devicesWithMediaType : AVMediaTypeVideo];
for (AVCaptureDevice *dev in devices){
if ([dev.localizedName isEqualToString:@"USB Video"]){
device = dev;
}
}
if (device != nil){
device_input = [[AVCaptureDeviceInput alloc] initWithDevice : device error : nil];
[session addInput : device_input];
}
if (@available(macOS 10.14, *)) {
if ([AVCaptureDevice authorizationStatusForMediaType: AVMediaTypeAudio] == AVAuthorizationStatusNotDetermined)
{
[AVCaptureDevice requestAccessForMediaType:AVMediaTypeAudio completionHandler:^(BOOL granted) {
if (granted) {
//self.microphoneConsentState = PrivacyConsentStateGranted;
}
else {
//self.microphoneConsentState = PrivacyConsentStateDenied;
}}];
}
} else {
// Fallback on earlier versions
}
AVCaptureDevice *audioDevice = nil;
AVCaptureDeviceInput *audioDevice_input = nil;
NSArray *audioDevices = [AVCaptureDevice devicesWithMediaType : AVMediaTypeAudio];
for (AVCaptureDevice *dev in audioDevices){
if ([dev.localizedName isEqualToString:@"USB Digital Audio"]){
audioDevice = dev;
}
}
if (audioDevice != nil){
audioDevice_input = [[AVCaptureDeviceInput alloc] initWithDevice : audioDevice error : nil];
[session addInput : audioDevice_input];
}
}
-(void) setupPreviewLayer {
self.preview_layer = [[AVCaptureVideoPreviewLayer alloc] initWithSession : session];
[self.preview_layer setVideoGravity : AVLayerVideoGravityResizeAspectFill];
[self.preview_layer setFrame : self.view.bounds];
[self.view.layer addSublayer : self.preview_layer];
if (![session isRunning]){
[session startRunning];
}
}
JimmyClephane
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