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AVFoundation: fix authorization request not being shown

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This commit is contained in:
Maksim Shabunin 2019-09-13 13:11:35 +03:00
parent 8609198b05
commit aaad238c6e
1 changed files with 22 additions and 4 deletions
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26
modules/videoio/src/cap_avfoundation_mac.mm
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@ -328,10 +328,28 @@ int CvCaptureCAM::startCaptureDevice(int cameraNum) {
} }
else if (status != AVAuthorizationStatusAuthorized) else if (status != AVAuthorizationStatusAuthorized)
{ {
fprintf(stderr, "OpenCV: not authorized to capture video (status %ld), requesting...\n", status); if (!cv::utils::getConfigurationParameterBool("OPENCV_AVFOUNDATION_SKIP_AUTH", false))
// TODO: doesn't work via ssh {
[AVCaptureDevice requestAccessForMediaType:AVMediaTypeVideo completionHandler:^(BOOL) { /* we don't care */}]; fprintf(stderr, "OpenCV: not authorized to capture video (status %ld), requesting...\n", status);
// we do not wait for completion [AVCaptureDevice requestAccessForMediaType:AVMediaTypeVideo completionHandler:^(BOOL) { /* we don't care */}];
if ([NSThread isMainThread])
{
// we run the main loop for 0.1 sec to show the message
[[NSRunLoop mainRunLoop] runUntilDate:[NSDate dateWithTimeIntervalSinceNow:0.1]];
}
else
{
fprintf(stderr, "OpenCV: can not spin main run loop from other thread, set "
"OPENCV_AVFOUNDATION_SKIP_AUTH=1 to disable authorization request "
"and perform it in your application.\n");
}
}
else
{
fprintf(stderr, "OpenCV: not authorized to capture video (status %ld), set "
"OPENCV_AVFOUNDATION_SKIP_AUTH=0 to enable authorization request or "
"perform it in your application.\n", status);
}
[localpool drain]; [localpool drain];
return 0; return 0;
} }