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Code Issues 1 Projects Releases Wiki Activity

avfvideosrc: wait for permissions request dialog callback

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otherwise gstreamer gives up on transitioning the pipeline before the
user has accepted

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/1370>
This commit is contained in:
Kevin King 2020-06-23 15:31:51 -07:00 committed by GStreamer Merge Bot
parent 482d2c9459
commit eebfed0726
1 changed files with 11 additions and 0 deletions
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11
sys/applemedia/avfvideosrc.m
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@ -452,13 +452,24 @@ static AVCaptureVideoOrientation GstAVFVideoSourceOrientation2AVCaptureVideoOrie
GST_DEBUG_OBJECT (element, "Device video access permission has already been granted");
break;
case AVAuthorizationStatusNotDetermined:
;
// Explicit user permission is required for media capture,
// but the user has not yet granted or denied such permission.
dispatch_semaphore_t sema = dispatch_semaphore_create(0);
dispatch_sync (mainQueue, ^{
[AVCaptureDevice requestAccessForMediaType:AVMediaTypeVideo completionHandler:^(BOOL granted) {
GST_DEBUG_OBJECT (element, "Device video access permission %s", granted ? "granted" : "not granted");
dispatch_semaphore_signal(sema);
}];
});
// Block on dialog being answered
if (![NSThread isMainThread]) {
dispatch_semaphore_wait(sema, DISPATCH_TIME_FOREVER);
} else {
while (dispatch_semaphore_wait(sema, DISPATCH_TIME_NOW)) {
[[NSRunLoop currentRunLoop] runMode:NSDefaultRunLoopMode beforeDate:[NSDate dateWithTimeIntervalSinceNow:0]];
}
}
// Check if permission has been granted
AVAuthorizationStatus videoAuthorizationStatus = [AVCaptureDevice authorizationStatusForMediaType:AVMediaTypeVideo];
if (videoAuthorizationStatus != AVAuthorizationStatusAuthorized) {