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Merge pull request #14267 from mshabunin:fix-osx-camera-auth

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* Added authorization request to AVFoundation camera backend (OSX 10.14+)
This commit is contained in:
Maksim Shabunin 2019-04-05 21:58:01 +03:00 committed by Alexander Alekhin
parent 4c2100e02c
commit aa1359dc19
1 changed files with 23 additions and 1 deletions
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24
modules/videoio/src/cap_avfoundation_mac.mm
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@ -45,7 +45,7 @@
#include "precomp.hpp"
#include "opencv2/imgproc.hpp"
#include <stdio.h>
#include <AvailabilityMacros.h>
#include <Availability.h>
#import <AVFoundation/AVFoundation.h>
#define CV_CAP_MODE_BGR CV_FOURCC_MACRO('B','G','R','3')
@ -324,6 +324,28 @@ void CvCaptureCAM::stopCaptureDevice() {
int CvCaptureCAM::startCaptureDevice(int cameraNum) {
NSAutoreleasePool *localpool = [[NSAutoreleasePool alloc] init];
#if defined(__MAC_OS_X_VERSION_MAX_ALLOWED) && __MAC_OS_X_VERSION_MAX_ALLOWED >= 101400
AVAuthorizationStatus status = [AVCaptureDevice authorizationStatusForMediaType:AVMediaTypeVideo];
if (status == AVAuthorizationStatusDenied)
{
fprintf(stderr, "OpenCV: camera access has been denied. Either run 'tccutil reset Camera' "
"command in same terminal to reset application authorization status, "
"either modify 'System Preferences -> Security & Privacy -> Camera' "
"settings for your application.\n");
[localpool drain];
return 0;
}
else if (status != AVAuthorizationStatusAuthorized)
{
fprintf(stderr, "OpenCV: not authorized to capture video (status %ld), requesting...\n", status);
// TODO: doesn't work via ssh
[AVCaptureDevice requestAccessForMediaType:AVMediaTypeVideo completionHandler:^(BOOL) { /* we don't care */}];
// we do not wait for completion
[localpool drain];
return 0;
}
#endif
// get capture device
NSArray *devices = [[AVCaptureDevice devicesWithMediaType: AVMediaTypeVideo]
arrayByAddingObjectsFromArray:[AVCaptureDevice devicesWithMediaType:AVMediaTypeMuxed]];