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Merge pull request #15517 from mshabunin:fix-osx-avfoundation-auth

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Alexander Alekhin 2019-09-16 15:28:33 +00:00
commit 70c88a2087
1 changed files with 38 additions and 17 deletions
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55
modules/videoio/src/cap_avfoundation_mac.mm
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@ -316,24 +316,45 @@ int CvCaptureCAM::startCaptureDevice(int cameraNum) {
NSAutoreleasePool *localpool = [[NSAutoreleasePool alloc] init]; NSAutoreleasePool *localpool = [[NSAutoreleasePool alloc] init];
#if defined(__MAC_OS_X_VERSION_MAX_ALLOWED) && __MAC_OS_X_VERSION_MAX_ALLOWED >= 101400 #if defined(__MAC_OS_X_VERSION_MAX_ALLOWED) && __MAC_OS_X_VERSION_MAX_ALLOWED >= 101400
AVAuthorizationStatus status = [AVCaptureDevice authorizationStatusForMediaType:AVMediaTypeVideo]; if (@available(macOS 10.14, *))
if (status == AVAuthorizationStatusDenied)
{ {
fprintf(stderr, "OpenCV: camera access has been denied. Either run 'tccutil reset Camera' " AVAuthorizationStatus status = [AVCaptureDevice authorizationStatusForMediaType:AVMediaTypeVideo];
"command in same terminal to reset application authorization status, " if (status == AVAuthorizationStatusDenied)
"either modify 'System Preferences -> Security & Privacy -> Camera' " {
"settings for your application.\n"); fprintf(stderr, "OpenCV: camera access has been denied. Either run 'tccutil reset Camera' "
[localpool drain]; "command in same terminal to reset application authorization status, "
return 0; "either modify 'System Preferences -> Security & Privacy -> Camera' "
} "settings for your application.\n");
else if (status != AVAuthorizationStatusAuthorized) [localpool drain];
{ return 0;
fprintf(stderr, "OpenCV: not authorized to capture video (status %ld), requesting...\n", status); }
// TODO: doesn't work via ssh else if (status != AVAuthorizationStatusAuthorized)
[AVCaptureDevice requestAccessForMediaType:AVMediaTypeVideo completionHandler:^(BOOL) { /* we don't care */}]; {
// we do not wait for completion if (!cv::utils::getConfigurationParameterBool("OPENCV_AVFOUNDATION_SKIP_AUTH", false))
[localpool drain]; {
return 0; fprintf(stderr, "OpenCV: not authorized to capture video (status %ld), requesting...\n", status);
[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];
return 0;
}
} }
#endif #endif