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fix CvVideoCamera defaultfps

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This commit is contained in:
Oliver Lumby 2015-08-01 13:55:28 +02:00
parent 157c94c03e
commit 2de3a24f46
1 changed files with 19 additions and 5 deletions
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24
modules/videoio/src/cap_ios_video_camera.mm
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@ -295,13 +295,27 @@ static CGFloat DegreesToRadians(CGFloat degrees) {return degrees * M_PI / 180;}
// set default FPS // set default FPS
if ([self.videoDataOutput connectionWithMediaType:AVMediaTypeVideo].supportsVideoMinFrameDuration) { AVCaptureDeviceInput *currentInput = [self.captureSession.inputs objectAtIndex:0];
[self.videoDataOutput connectionWithMediaType:AVMediaTypeVideo].videoMinFrameDuration = CMTimeMake(1, self.defaultFPS); AVCaptureDevice *device = currentInput.device;
NSError *error = nil;
[device lockForConfiguration:&error];
float maxRate = ((AVFrameRateRange*) [device.activeFormat.videoSupportedFrameRateRanges objectAtIndex:0]).maxFrameRate;
if (maxRate > self.defaultFPS - 1 && error == nil) {
[device setActiveVideoMinFrameDuration:CMTimeMake(1, self.defaultFPS)];
[device setActiveVideoMaxFrameDuration:CMTimeMake(1, self.defaultFPS)];
NSLog(@"[Camera] FPS set to %d", self.defaultFPS);
} else {
NSLog(@"[Camera] unable to set defaultFPS at %d FPS, max is %f FPS", self.defaultFPS, maxRate);
} }
if ([self.videoDataOutput connectionWithMediaType:AVMediaTypeVideo].supportsVideoMaxFrameDuration) {
[self.videoDataOutput connectionWithMediaType:AVMediaTypeVideo].videoMaxFrameDuration = CMTimeMake(1, self.defaultFPS); if (error != nil) {
NSLog(@"[Camera] unable to set defaultFPS: %@", error);
} }
[device unlockForConfiguration];
// set video mirroring for front camera (more intuitive) // set video mirroring for front camera (more intuitive)
if ([self.videoDataOutput connectionWithMediaType:AVMediaTypeVideo].supportsVideoMirroring) { if ([self.videoDataOutput connectionWithMediaType:AVMediaTypeVideo].supportsVideoMirroring) {
if (self.defaultAVCaptureDevicePosition == AVCaptureDevicePositionFront) { if (self.defaultAVCaptureDevicePosition == AVCaptureDevicePositionFront) {
@ -329,7 +343,7 @@ static CGFloat DegreesToRadians(CGFloat degrees) {return degrees * M_PI / 180;}
[self.videoDataOutput setSampleBufferDelegate:self queue:videoDataOutputQueue]; [self.videoDataOutput setSampleBufferDelegate:self queue:videoDataOutputQueue];
NSLog(@"[Camera] created AVCaptureVideoDataOutput at %d FPS", self.defaultFPS); NSLog(@"[Camera] created AVCaptureVideoDataOutput");
} }