ios – 如何使CvVideoCamera不自动旋转？

我的CvVideoCamera自动旋转,我不希望它. This has been raised on the bugtracker,但一段时间没有活动.

解决方法

子类CvVideoCamera,并且只是删除旋转代码.我希望我的方向永远是肖像,所以这很简单：

MyCvVideoCamera.h

#import <opencv2/highgui/cap_ios.h>

@interface MyCvVideoCamera : CvVideoCamera

- (void)updateOrientation;
- (void)layoutPreviewLayer;

@property (nonatomic,retain) CALayer *customPreviewLayer;

@end

MyCvVideoCamera.m

#import "MyCvVideoCamera.h"

@implementation MyCvVideoCamera

- (void)updateOrientation;
{
    // nop
}
- (void)layoutPreviewLayer;
{
    if (self.parentView != nil) {
        CALayer* layer = self.customPreviewLayer;
        CGRect bounds = self.customPreviewLayer.bounds;
        layer.position = CGPointMake(self.parentView.frame.size.width/2.,self.parentView.frame.size.height/2.);
        layer.bounds = bounds;
    }
}
@end