Inherits NSObject.
Class Method Summary | |
| (UIImage *) | + sampleBufferTo32RGBA: |
| Converts CMSampleBuffer to UIImage. More... | |
| (NSData *) | + anySampleBufferFormatTo32RGBA: |
| Converts CMSampleBuffer to RGBA8888 data format. More... | |
| (GMVImageOrientation) | + imageOrientationFromOrientation:withCaptureDevicePosition:defaultDeviceOrientation: |
| This function determines the image exif metadata using device orientation and device position. More... | |
| (UIImage *) | + imageFromData:width:height: |
| Converts a RGBA buffer to an UIImage. More... | |
Method Detail
| + (UIImage *) sampleBufferTo32RGBA: | (CMSampleBufferRef) | sampleBuffer |
Converts CMSampleBuffer to UIImage.
This function supports 420v, 420f, and BGRA CVPixelBufferPixelFormatTypes.
- Parameters
-
sampleBuffer The buffer to convert to UIImage.
- Returns
- UIImage in RGBA8888 format.
| + (NSData *) anySampleBufferFormatTo32RGBA: | (CMSampleBufferRef) | sampleBuffer |
Converts CMSampleBuffer to RGBA8888 data format.
This function supports 420v, 420f, and BGRA CVPixelBufferPixelFormatTypes. The output data corresponds to an image with exact same width and height than input sampleBuffer. The number of bytes in a pixel row corresponds to the returned NSData's length divided by height.
- Parameters
-
sampleBuffer The buffer to convert to NSData.
- Returns
- NSData in RGBA8888 format.
| + (GMVImageOrientation) imageOrientationFromOrientation: | (UIDeviceOrientation) | deviceOrientation | |
| withCaptureDevicePosition: | (AVCaptureDevicePosition) | position | |
| defaultDeviceOrientation: | (UIDeviceOrientation) | defaultOrientation | |
This function determines the image exif metadata using device orientation and device position.
The orientation is significant when using detections on an image generated from AVCaptureVideoDataOutput CMSampleBuffer. AVCaptureVideoDataOutput does not support setting the video orientation, therefore the client has to handle the rotation on their own. GMVImageOrientation can be passed in to GMVDetector featuresInImage:options: to let the detector handle the video rotation for you.
- Parameters
-
deviceOrientation The device orientation. position The caputre device position. defaultOrientation The default device orientation to use when deviceOrientaitonhas value as UIDeviceOrientationFaceUp or UIDeviceOrientationFaceDown.
- Returns
- GMVImageOrientation value to express an image exif metadata.
| + (UIImage *) imageFromData: | (NSData *) | data | |
| width: | (size_t) | width | |
| height: | (size_t) | height | |
Converts a RGBA buffer to an UIImage.
The number of bytes in a pixel row is inferred from data's length divided by height.
- Parameters
-
data The RGBA buffer. width The width of the buffer. height The height of the height of the buffer.
- Returns
- An UIImage instance constructed from
data.