From e98852a389b6d9835376003335ea253597d8c7c1 Mon Sep 17 00:00:00 2001 From: Maksim Shabunin Date: Fri, 13 Sep 2019 13:11:35 +0300 Subject: [PATCH] AVFoundation: fix authorization request not being shown --- modules/videoio/src/cap_avfoundation_mac.mm | 26 +++++++++++++++++---- 1 file changed, 22 insertions(+), 4 deletions(-) diff --git a/modules/videoio/src/cap_avfoundation_mac.mm b/modules/videoio/src/cap_avfoundation_mac.mm index 71df9245a0..0c61a08a65 100644 --- a/modules/videoio/src/cap_avfoundation_mac.mm +++ b/modules/videoio/src/cap_avfoundation_mac.mm @@ -339,10 +339,28 @@ int CvCaptureCAM::startCaptureDevice(int cameraNum) { } 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 + if (!cv::utils::getConfigurationParameterBool("OPENCV_AVFOUNDATION_SKIP_AUTH", false)) + { + 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; }