Hi,
I'm working with a very simple app that tries to read a coordinates card and past the data into diferent fields. The card's layout is COLUMNS from 1-10, ROWs from A-J and a two digit number for each cell. In my app, I have field for each of those cells (A1, A2...). I want that OCR to read that card and paste the info but I just cant. I have two problems. The camera won't close. It remains open until I press the button SAVE (this is not good because a user could take 3, 4, 5... pictures of the same card with, maybe, different results, and then? Which is the good one?). Then, after I press save, I can see the OCR kinda works ( the console prints all the date read) but the info is not pasted at all.
Any idea? I know is hard to know what's wrong but I've tried chatgpt and all it does... just doesn't work
This is the code from the scanview
import SwiftUI
import Vision
import VisionKit
struct ScanCardView: UIViewControllerRepresentable {
@Binding var scannedCoordinates: [String: String]
var useLettersForColumns: Bool
var numberOfColumns: Int
var numberOfRows: Int
@Environment(.presentationMode) var presentationMode
func makeUIViewController(context: Context) -> VNDocumentCameraViewController {
let scannerVC = VNDocumentCameraViewController()
scannerVC.delegate = context.coordinator
return scannerVC
}
func updateUIViewController(_ uiViewController: VNDocumentCameraViewController, context: Context) {}
func makeCoordinator() -> Coordinator {
return Coordinator(self)
}
class Coordinator: NSObject, VNDocumentCameraViewControllerDelegate {
let parent: ScanCardView
init(_ parent: ScanCardView) {
self.parent = parent
}
func documentCameraViewController(_ controller: VNDocumentCameraViewController, didFinishWith scan: VNDocumentCameraScan) {
print("Escaneo completado, procesando imagen...")
guard scan.pageCount > 0, let image = scan.imageOfPage(at: 0).cgImage else {
print("No se pudo obtener la imagen del escaneo.")
controller.dismiss(animated: true, completion: nil)
return
}
recognizeText(from: image)
DispatchQueue.main.async {
print("Finalizando proceso OCR y cerrando la cámara.")
controller.dismiss(animated: true, completion: nil)
}
}
func documentCameraViewControllerDidCancel(_ controller: VNDocumentCameraViewController) {
print("Escaneo cancelado por el usuario.")
controller.dismiss(animated: true, completion: nil)
}
func documentCameraViewController(_ controller: VNDocumentCameraViewController, didFailWithError error: Error) {
print("Error en el escaneo: \(error.localizedDescription)")
controller.dismiss(animated: true, completion: nil)
}
private func recognizeText(from image: CGImage) {
let request = VNRecognizeTextRequest { (request, error) in
guard let observations = request.results as? [VNRecognizedTextObservation], error == nil else {
print("Error en el reconocimiento de texto: \(String(describing: error?.localizedDescription))")
DispatchQueue.main.async {
self.parent.presentationMode.wrappedValue.dismiss()
}
return
}
let recognizedStrings = observations.compactMap { observation in
observation.topCandidates(1).first?.string
}
print("Texto reconocido: \(recognizedStrings)")
let filteredCoordinates = self.filterValidCoordinates(from: recognizedStrings)
DispatchQueue.main.async {
print("Coordenadas detectadas después de filtrar: \(filteredCoordinates)")
self.parent.scannedCoordinates = filteredCoordinates
}
}
request.recognitionLevel = .accurate
let handler = VNImageRequestHandler(cgImage: image, options: [:])
DispatchQueue.global(qos: .userInitiated).async {
do {
try handler.perform([request])
print("OCR completado y datos procesados.")
} catch {
print("Error al realizar la solicitud de OCR: \(error.localizedDescription)")
}
}
}
private func filterValidCoordinates(from strings: [String]) -> [String: String] {
var result: [String: String] = [:]
print("Texto antes de filtrar: \(strings)")
for string in strings {
let trimmedString = string.replacingOccurrences(of: " ", with: "")
if parent.useLettersForColumns {
let pattern = "^[A-J]\\d{1,2}$" // Letras de A-J seguidas de 1 o 2 dígitos
if trimmedString.range(of: pattern, options: .regularExpression) != nil {
print("Coordenada válida detectada (letras): \(trimmedString)")
result[trimmedString] = "Valor" // Asignación de prueba
}
} else {
let pattern = "^[1-9]\\d{0,1}$" // Solo números, de 1 a 99
if trimmedString.range(of: pattern, options: .regularExpression) != nil {
print("Coordenada válida detectada (números): \(trimmedString)")
result[trimmedString] = "Valor"
}
}
}
print("Coordenadas finales después de filtrar: \(result)")
return result
}
}
}
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I have used the Mac M1 and M4.
Developing OpenGL projects on machines running macOS 15.2 and 13.6.
Call the OpenGL library functions of Mac.
glTexImage2D
If you use GL_LUMINANCE, GL_LUMINANCE_ALPHA, GL_ALPHA these three textures, you will get an error gl 500.
It makes me unable to draw normally on Mac.
What's the reason for this? Don't they support it?
I have a CoreImage pipeline and one of my steps is to rotate my image about the origin (bottom left corner) and then translate it. I'm not seeing the behaviour I'm expecting, and I think my problem is in how I'm combining these two steps.
As an example, I start with an identity transform
(lldb) po transform333
▿ CGAffineTransform
- a : 1.0
- b : 0.0
- c : 0.0
- d : 1.0
- tx : 0.0
- ty : 0.0
I then rotate 1.57 radians (approx. 90 degrees, CCW)
transform333 = transform333.rotated(by: 1.57)
- a : 0.0007963267107332633
- b : 0.9999996829318346
- c : -0.9999996829318346
- d : 0.0007963267107332633
- tx : 0.0
- ty : 0.0
I understand the current contents of the transform.
But then I translate by 10, 10:
(lldb) po transform333.translatedBy(x: 10, y: 10)
- a : 0.0007963267107332633
- b : 0.9999996829318346
- c : -0.9999996829318346
- d : 0.0007963267107332633
- tx : -9.992033562211013
- ty : 10.007960096425679
I was expecting tx and ty to be 10 and 10.
I have noticed that when I reverse the order of these operations, the transform contents look correct. So I'll most likely just perform the steps in what feels to me like the incorrect order.
Is anyone willing/able to point me to an explanation of why the steps I'm performing are giving me these results?
thanks,
mike
Hello all... is there a way to close a contour if you have found say two points on each side top "extension"? see image attached. So in end desire a trapezoid type shape. Code example would be very appreciated. thank you :) Think I have it as a CGPath. So a way to edit a CGPath, or close the top from a top left to a top right point?
Hi, I’m learning MAUI and was trying to use VNDocumentCameraViewController provided by Vision Kit to scan documents and it is working fine but I realized that I was not able to customize some of the options provided by default like, disabling the auto scan option. Is there any way to disable the auto scan option or are there any other alternatives with the same founctionalities as VNDocumentCameraViewController that are more customizable?
End goal: to detect 3 lines, and 2 corners accurately. Trying contours but they are a bit off. Is there a way or settings in contours to detect corners and lines more accurately, maybe less an sharper edged/corner contours? Or some other API or methods please?
I would love an email please ;) thank you. 2. also an overlay/scale issue
I facing to many lags in pubgmobile when i m playing its not running properly
macOS 15.2, MBP M1, built-in display.
The following code produces a line outside the bounds of my clipping region when drawing to CGLayers, to produce a clockwise arc:
CGContextBeginPath(m_s.outContext);
CGContextAddArc(m_s.outContext, leftX + radius, topY - radius, radius, -startRads, -endRads, 1);
CGContextSetRGBStrokeColor(m_s.outContext, col.fRed(), col.fGreen(), col.fBlue(), col.fAlpha());
CGContextSetLineWidth(m_s.outContext, width);
CGContextStrokePath(m_s.outContext);
Drawing other shapes such as rects or ellipses doesn't cause a problem.
I can work around the issue by bringing the path back to the start of the arc:
CGContextBeginPath(m_s.outContext);
CGContextAddArc(m_s.outContext, leftX + radius, topY - radius, radius, -startRads, -endRads, 1);
// add a second arc back to the start
CGContextAddArc(m_s.outContext, leftX + radius, topY - radius, radius, -endRads, -startRads, 0);
CGContextSetRGBStrokeColor(m_s.outContext, col.fRed(), col.fGreen(), col.fBlue(), col.fAlpha());
CGContextSetLineWidth(m_s.outContext, width);
CGContextStrokePath(m_s.outContext);
But this does appear to be a bug.
Hello, I am making a project in SDL, and with that I am using SDL_Image. I am doing all of this on Xcode.
I've been able to initialize everything just fine, but issues spring up when I try to load an image.
When I give the code a path to look for an image:
Unable to load image! IMG_Error: Couldn't open [Insert image path here]: Operation not permitted
I get that error.
Keep in mind "Unable to load image" is a general error I put in the code should loading said image fail, the specific error which I called with IMG_GetError() is what we really need to know.
I've seen before that this might occur if a program does not have full disk access. Because of this, I've tried giving Xcode full disk access, but this didn't work and I still got the same error.
After many former OS and Xcode updates, my Game Controller Swift code generates a "DIS-CONNECTED" MESSAGE.
Mac Sequoia 15.2
Xcode 16.2
Tried to update PlayStation controller firmware on my Mac.
Still no luck with Xcode and its use of a game controller with tvOS.
I’m trying to create a CGContext that matches my screen using the following code
let context = CGContext(
data: pixelBuffer,
width: pixelWidth, // 3456
height: pixelHeight, // 2234
bitsPerComponent: 10, // PixelEncoding = "--RRRRRRRRRRGGGGGGGGGGBBBBBBBBBB"
bytesPerRow: bytesPerRow, // 13824
space: CGColorSpace(name: CGColorSpace.extendedSRGB)!,
bitmapInfo: CGImageAlphaInfo.none.rawValue
| CGImagePixelFormatInfo.RGBCIF10.rawValue
| CGImageByteOrderInfo.order16Little.rawValue
)
But it fails with an error
CGBitmapContextCreate: unsupported parameter combination:
RGB
10 bits/component, integer
13824 bytes/row
kCGImageAlphaNone
kCGImageByteOrder16Little
kCGImagePixelFormatRGBCIF10
Valid parameters for RGB color space model are:
16 bits per pixel, 5 bits per component, kCGImageAlphaNoneSkipFirst
32 bits per pixel, 8 bits per component, kCGImageAlphaNoneSkipFirst
32 bits per pixel, 8 bits per component, kCGImageAlphaNoneSkipLast
32 bits per pixel, 8 bits per component, kCGImageAlphaPremultipliedFirst
32 bits per pixel, 8 bits per component, kCGImageAlphaPremultipliedLast
32 bits per pixel, 10 bits per component, kCGImageAlphaNone|kCGImagePixelFormatRGBCIF10|kCGImageByteOrder16Little
64 bits per pixel, 16 bits per component, kCGImageAlphaPremultipliedLast
64 bits per pixel, 16 bits per component, kCGImageAlphaNoneSkipLast
64 bits per pixel, 16 bits per component, kCGImageAlphaPremultipliedLast|kCGBitmapFloatComponents|kCGImageByteOrder16Little
64 bits per pixel, 16 bits per component, kCGImageAlphaNoneSkipLast|kCGBitmapFloatComponents|kCGImageByteOrder16Little
128 bits per pixel, 32 bits per component, kCGImageAlphaPremultipliedLast|kCGBitmapFloatComponents
128 bits per pixel, 32 bits per component, kCGImageAlphaNoneSkipLast|kCGBitmapFloatComponents
See Quartz 2D Programming Guide (available online) for more information.
Why is it unsupported if it matches the 6th option? (32 bits per pixel, 10 bits per component, kCGImageAlphaNone|kCGImagePixelFormatRGBCIF10|kCGImageByteOrder16Little)
Hi, I uptaded to the 15.2 my system. It was Turkish and I change the English for AI. But Image Playground is not working.
My Playground app has been stuck at Downloading support for Image Playground now for about 4-5 days.
Topic:
Graphics & Games
SubTopic:
General
We as a team of engineers work on an app intended to visualize medical images. The type of situations where the app is used involves time critical decision making for acute clinical conditions. Stability of the app and performance are of utmost importance and can directly help timely treatment action. The app we are developing uses multiple libraries and tools like vtk, webgl, opengl, webkit, gl-matrix etc.
The problem specifically can be described as follows, it has been observed that when 3D volume is rendered in the app and we try to rotate the volume the rotation is slow, unresposive and laggy. Specifically, we have noticed that iOS 18.1 the volume rotation is much smoother as compared to latest iOS 18.2. Eariler, we have faced somewhat similar issue with iOS 17 but it got improved in iOS 18.1. This performance regression is affecting the user experience in our healthcare application.
We have taken reference from the cornerstone.js code and you can reproduce the issue using the following example: https://www.cornerstonejs.org/live-examples/volumeviewport3d
Steps to Reproduce:
Load the above mentioned test example on an iPhone running version 18.2 using safari.
Perform volume rendering using the provided dataset.
Measure the time taken by volume for each rotate or drag action.
Repeat the same steps on an iPhone running version 18.1 for comparison.
Additional Information:
Device Model Tested:
iPhone12, iPhone13, iPhone14
iOS Version With Issue:
18.2
18.3(Beta)
I would appreciate any insights or suggestions on how to address this performance regression. If additional information is needed, please let me know.
Thank you.
I am trying to convert a JPG image to a JP2 (JPEG 2000) format using the ImageMagick library on iOS. However, although the file extension is changing to .jp2, the format of the image does not seem to be changing. The output image is still being treated as a JPG file, and not as a true JP2 format.
Here is the code
(IBAction)convertButtonClicked:(id)sender {
NSString *jpgPath = [[NSBundle mainBundle] pathForResource:@"Example" ofType:@"jpg"];
NSString *tempFilePath = [NSTemporaryDirectory() stringByAppendingPathComponent:@"Converted.jp2"];
MagickWand *wand = NewMagickWand();
if (MagickReadImage(wand, [jpgPath UTF8String]) == MagickFalse) {
char *description;
ExceptionType severity;
description = MagickGetException(wand, &severity);
NSLog(@"Error reading image: %s", description);
MagickRelinquishMemory(description);
return;
}
if (MagickSetFormat(wand, "JP2") == MagickFalse) {
char *description;
ExceptionType severity;
description = MagickGetException(wand, &severity);
NSLog(@"Error setting image format to JP2: %s", description);
MagickRelinquishMemory(description);
}
if (MagickWriteImage(wand, [tempFilePath UTF8String]) == MagickFalse) {
NSLog(@"Error writing JP2 image");
return;
}
NSLog(@"Image successfully converted.");
}
@end
Topic:
Graphics & Games
SubTopic:
General
Hello,
I am trying to read video frames using AVAssetReaderTrackOutput. Here is the sample code:
//prepare assets
let asset = AVURLAsset(url: some_url)
let assetReader = try AVAssetReader(asset: asset)
guard let videoTrack = try await asset.loadTracks(withMediaCharacteristic: .visual).first else {
throw SomeErrorCode.error
}
var readerSettings: [String: Any] = [
kCVPixelBufferIOSurfacePropertiesKey as String: [String: String]()
]
//check if HDR video
var isHDRDetected: Bool = false
let hdrTracks = try await asset.loadTracks(withMediaCharacteristic: .containsHDRVideo)
if hdrTracks.count > 0 {
readerSettings[AVVideoAllowWideColorKey as String] = true
readerSettings[kCVPixelBufferPixelFormatTypeKey as String] =
kCVPixelFormatType_420YpCbCr10BiPlanarFullRange
isHDRDetected = true
}
//add output to assetReader
let output = AVAssetReaderTrackOutput(track: videoTrack, outputSettings: readerSettings)
guard assetReader.canAdd(output) else {
throw SomeErrorCode.error
}
assetReader.add(output)
guard assetReader.startReading() else {
throw SomeErrorCode.error
}
//add writer ouput settings
let videoOutputSettings: [String: Any] = [
AVVideoCodecKey: AVVideoCodecType.hevc,
AVVideoWidthKey: 1920,
AVVideoHeightKey: 1080,
]
let finalPath = "//some URL oath"
let assetWriter = try AVAssetWriter(outputURL: finalPath, fileType: AVFileType.mov)
guard assetWriter.canApply(outputSettings: videoOutputSettings, forMediaType: AVMediaType.video)
else {
throw SomeErrorCode.error
}
let assetWriterInput = AVAssetWriterInput(mediaType: .video, outputSettings: videoOutputSettings)
let sourcePixelAttributes: [String: Any] = [
kCVPixelBufferPixelFormatTypeKey as String: isHDRDetected
? kCVPixelFormatType_420YpCbCr10BiPlanarFullRange : kCVPixelFormatType_32ARGB,
kCVPixelBufferWidthKey as String: 1920,
kCVPixelBufferHeightKey as String: 1080,
]
//create assetAdoptor
let assetAdaptor = AVAssetWriterInputTaggedPixelBufferGroupAdaptor(
assetWriterInput: assetWriterInput, sourcePixelBufferAttributes: sourcePixelAttributes)
guard assetWriter.canAdd(assetWriterInput) else {
throw SomeErrorCode.error
}
assetWriter.add(assetWriterInput)
guard assetWriter.startWriting() else {
throw SomeErrorCode.error
}
assetWriter.startSession(atSourceTime: CMTime.zero)
//prepare tranfer session
var session: VTPixelTransferSession? = nil
guard
VTPixelTransferSessionCreate(allocator: kCFAllocatorDefault, pixelTransferSessionOut: &session)
== noErr, let session
else {
throw SomeErrorCode.error
}
guard let pixelBufferPool = assetAdaptor.pixelBufferPool else {
throw SomeErrorCode.error
}
//read through frames
while let nextSampleBuffer = output.copyNextSampleBuffer() {
autoreleasepool {
guard let imageBuffer = CMSampleBufferGetImageBuffer(nextSampleBuffer) else {
return
}
//this part copied from (https://developer.apple.com/videos/play/wwdc2023/10181) at 23:58 timestamp
let attachment = [
kCVImageBufferYCbCrMatrixKey: kCVImageBufferYCbCrMatrix_ITU_R_2020,
kCVImageBufferColorPrimariesKey: kCVImageBufferColorPrimaries_ITU_R_2020,
kCVImageBufferTransferFunctionKey: kCVImageBufferTransferFunction_SMPTE_ST_2084_PQ,
]
CVBufferSetAttachments(imageBuffer, attachment as CFDictionary, .shouldPropagate)
//now convert to CIImage with HDR data
let image = CIImage(cvPixelBuffer: imageBuffer)
let cropped = "" //here perform some actions like cropping, flipping, etc. and preserve this changes by converting the extent to CGImage first:
//this part copied from (https://developer.apple.com/videos/play/wwdc2023/10181) at 24:30 timestamp
guard
let cgImage = context.createCGImage(
cropped, from: cropped.extent, format: .RGBA16,
colorSpace: CGColorSpace(name: CGColorSpace.itur_2100_PQ)!)
else {
continue
}
//finally convert it back to CIImage
let newScaledImage = CIImage(cgImage: cgImage)
//now write it to a new pixelBuffer
let pixelBufferAttributes: [String: Any] = [
kCVPixelBufferCGImageCompatibilityKey as String: true,
kCVPixelBufferCGBitmapContextCompatibilityKey as String: true,
]
var pixelBuffer: CVPixelBuffer?
CVPixelBufferCreate(
kCFAllocatorDefault, Int(newScaledImage.extent.width), Int(newScaledImage.extent.height),
kCVPixelFormatType_420YpCbCr10BiPlanarFullRange, pixelBufferAttributes as CFDictionary,
&pixelBuffer)
guard let pixelBuffer else {
continue
}
context.render(newScaledImage, to: pixelBuffer) //context is a CIContext reference
var pixelTransferBuffer: CVPixelBuffer?
CVPixelBufferPoolCreatePixelBuffer(kCFAllocatorDefault, pixelBufferPool, &pixelTransferBuffer)
guard let pixelTransferBuffer else {
continue
}
// Transfer the image to the pixel buffer.
guard
VTPixelTransferSessionTransferImage(session, from: pixelBuffer, to: pixelTransferBuffer)
== noErr
else {
continue
}
//finally append to taggedBuffer
}
}
assetWriterInput.markAsFinished()
await assetWriter.finishWriting()
The result video is not in correct color as the original video. It turns out too bright. If I play around with attachment values, it can be either too dim or too bright but not exactly proper as the original video. What am I missing in my setup? I did find that kCVPixelFormatType_4444AYpCbCr16 can produce proper video output but then I can't convert it to CIImage and so I can't do the CIImage operations that I need. Mainly cropping and resizing the CIImage
Hello!
Brand new to the Apple developer community, so, hello everyone! I'm a game developer, we just launched our first game on PC and I'm looking to port it to ios. Time is something I'm kind of short on, and I hear it takes some jumping through hoops to get the know-how to port something to mobile. Any good sites you'd recommend for finding programmers to port your game? It's fairly simple - just a visual novel. Any and all suggestions welcome!
All the best!
Elijah
Topic:
Graphics & Games
SubTopic:
General
Hi all,
I have been trying to get Apple's assistive touch's snap to item to work for a unity game built using Apple's Core & Accessibility API. The switch control recognises these buttons however, eye tracking will not snap to them. The case in which it needs to snap is when an external eye tracking device is connected and utilises assistive touch & assistive touch's snap to item.
All buttons in the game have a AccessibilityNode with the trait 'Button' on them & an appropriate label, which, following the documentation and comments on the developer forum, should allow them to be recognised by snap to item.
This is not the case, devices (iPads and iPhones) do not recognise the buttons as a snap to target.
Does anyone know why this is the case, and if this is a bug?
Hi,
wanted to test if possible to use Mesa3D OGLon12+D3DMetal 2b3 to get GL>4.1 support on windows apps via D3D12Metal..
using simple wglgears.c app (similar glxgears) and running like:
GALLIUM_DRIVER=d3d12 wine64 wglgears64 -info
with overridden opengl32.dll using contents from:
https://github.com/pal1000/mesa-dist-win/releases/download/24.3.0-rc1/mesa3d-24.3.0-rc1-release-msvc.7z
I get:
[D3DMetal:LOG:5E53] Unsupported API: CreateCommandQueue1
caused by:
https://gitlab.freedesktop.org/mesa/mesa/-/commit/c022c9603d500b59ff5e6f93c8a214d1785ab20a
API:
https://learn.microsoft.com/en-us/windows/win32/api/d3d12/nf-d3d12-id3d12device9-createcommandqueue1
note setup is correct as using:
GALLIUM_DRIVER=llvmpipe wine64 wglgears64 -info
I get:
GL_RENDERER = llvmpipe (LLVM 19.1.3, 128 bits)
GL_VERSION = 4.5 (Compatibility Profile) Mesa 24.3.0-rc1 (git-85ba713d76)
GL_VENDOR = Mesa
GL_EXTENSIONS = GL_ARB_multisample GL_EXT_abgr GL_EXT_bgra GL_EXT_blend_color GL_EXT_blend_minmax GL_EXT_blend_subtract
r GL_EXT_texture.. etc..
I have a Mac Studio 2023 M2 Max
Running Sonoma 14.6.1
Developing in XCode 16.1
It seems that the NSScreen frame settings may be incorrect. The frame settings received from NSScreen.screens don't seem to match up with the Desktop arrangement settings in the Settings.
Apologies in advance for this long post!
for screen in NSScreen.screens {
let name = screen.localizedName
Globals.logger.debug("Globals initializeScreens - screen \(i) '\(name, privacy: .public)'")
Globals.logger.debug("Globals initializeScreens - '\(screen.debugDescription, privacy: .public)'")
}
This is what I receive in the log:
Globals initializeScreens - '<NSScreen: 0x600000ef4240;
name="PHL 346E2C";
backingScaleFactor=1.000000;
frame={{0, 0}, {3440, 1440}};
visibleFrame={{0, 0}, {3440, 1415}}>'
Globals initializeScreens - screen 2 'Blackmagic (1)'
Globals initializeScreens - '<NSScreen: 0x600000ef42a0;
name="Blackmagic (1)";
backingScaleFactor=1.000000;
frame={{-3840, 0}, {1920, 1080}};
visibleFrame={{-3840, 0}, {1920, 1055}}>'
Globals initializeScreens - screen 3 'Blackmagic (4)'
Globals initializeScreens - '<NSScreen: 0x600000ef4360;
name="Blackmagic (4)";
backingScaleFactor=1.000000;
frame={{-1920, 0}, {1920, 1080}};
visibleFrame={{-1920, 0}, {1920, 1055}}>'
Globals initializeScreens - screen 4 'Blackmagic (2)'
Globals initializeScreens - '<NSScreen: 0x600000ef43c0;
name="Blackmagic (2)";
backingScaleFactor=1.000000;
frame={{5360, 0}, {1920, 1080}};
visibleFrame={{5360, 0}, {1920, 1055}}>'
Globals initializeScreens - screen 5 'Blackmagic (3)'
Globals initializeScreens - '<NSScreen: 0x600000ef4420;
name="Blackmagic (3)";
backingScaleFactor=1.000000;
frame={{3440, 0}, {1920, 1080}};
visibleFrame={{3440, 0}, {1920, 1055}}>'
It looks like the frame settings for Blackmagic (2) and Blackmagic (4) are switched.
The setup has five monitors. Four are using the USB-C Digital AV Multiport Adapters. The output for these are streamed into a rack of A/V equipment using BlackMagic Design mini converters and monitors.
My Swift application allows users to open four movies, one for each of the AV Adapters. The movies can then be played back in sync for later processing by the A/V equipment.
Here are some screen captures that show my display settings.
Blackmagic (1) and Blackmagic (2) are to the left of the main screen.
Blackmagic (3) and Blackmagic(4) are to the right of the main screen.
The desktop is hard to see but is correct.
The wallpaper settings are all correct.
The wallpaper is correctly ordered when displayed on the monitors.
After opening the movies and using the NSScreen frame settings, the displays are incorrectly ordered. Test B and Test D are switched, which is what I would expect given the NSScreen frame values.
Any ideas? I've tried re-arranging the desktops, rebooting, etc. but no luck.
The code that changes the screen location is similar to this post on Stack Overflow
public func setDisplay( screen: NSScreen ) {
Globals.logger.log("MovieWindowController - setDisplay = \(screen.localizedName, privacy: .public)")
Globals.logger.debug("MovieWindowController - setDisplay - '\(screen.debugDescription, privacy: .public)'")
let dx = CGFloat(Constants.midX)
let dy = CGFloat(Constants.midY)
var pos = NSPoint()
pos.x = screen.visibleFrame.midX - dx
pos.y = screen.visibleFrame.midY - dy
Globals.logger.debug("MovieWindowController - setDisplay - x = '\(pos.x, privacy: .public)', y = '\(pos.y, privacy: .public)'")
window?.setFrameOrigin(pos)
}
The log show just what I would expect given the incorrect frame values.
MovieWindowController - setDisplay = Blackmagic (1)
MovieWindowController - setDisplay - '<NSScreen: 0x6000018e8420; name="Blackmagic (1)"; backingScaleFactor=1.000000; frame={{-3840, 0}, {1920, 1080}}; visibleFrame={{-3840, 0}, {1920, 1055}}>'
MovieWindowController - setDisplay - x = '-3840.000000', y = '-12.500000'
MovieWindowController - setDisplay = Blackmagic (2)
MovieWindowController - setDisplay - '<NSScreen: 0x6000018a10e0; name="Blackmagic (2)"; backingScaleFactor=1.000000; frame={{5360, 0}, {1920, 1080}}; visibleFrame={{5360, 0}, {1920, 1055}}>'
MovieWindowController - setDisplay - x = '5360.000000', y = '-12.500000'
MovieWindowController - setDisplay = Blackmagic (3)
MovieWindowController - setDisplay - '<NSScreen: 0x6000018cc8a0; name="Blackmagic (3)"; backingScaleFactor=1.000000; frame={{3440, 0}, {1920, 1080}}; visibleFrame={{3440, 0}, {1920, 1055}}>'
MovieWindowController - setDisplay - x = '3440.000000', y = '-12.500000'
MovieWindowController - setDisplay = Blackmagic (4)
MovieWindowController - setDisplay - '<NSScreen: 0x6000018c9ce0; name="Blackmagic (4)"; backingScaleFactor=1.000000; frame={{-1920, 0}, {1920, 1080}}; visibleFrame={{-1920, 0}, {1920, 1055}}>'
MovieWindowController - setDisplay - x = '-1920.000000', y = '-12.500000'
Am I correct? I think this is driving me crazy!
Thanks in advance!
Edit: The mouse behavior is correct in moving across the displays!
Topic:
Graphics & Games
SubTopic:
General
So I get JPEG data in my app. Previously I was using the higher level NSBitmapImageRep API and just feeding the JPEG data to it.
But now I've noticed on Sonoma If I get a JPEG in the CMYK color space the NSBitmapImageRep renders mostly black and is corrupted. So I'm trying to drop down to the lower level APIs. Specifically I grab a CGImageRef and and trying to use the Accelerate API to convert it to another format (to hopefully workaround the issue...
CGImageRef sourceCGImage = `CGImageCreateWithJPEGDataProvider(jpegDataProvider,`
NULL,
shouldInterpolate,
kCGRenderingIntentDefault);
Now I use vImageConverter_CreateWithCGImageFormat... with the following values for source and destination formats:
Source format: (derived from sourceCGImage)
bitsPerComponent = 8
bitsPerPixel = 32
colorSpace = (kCGColorSpaceICCBased; kCGColorSpaceModelCMYK; Generic CMYK Profile)
bitmapInfo = kCGBitmapByteOrderDefault
version = 0
decode = 0x000060000147f780
renderingIntent = kCGRenderingIntentDefault
Destination format:
bitsPerComponent = 8
bitsPerPixel = 24
colorSpace = (DeviceRBG)
bitmapInfo = 8197
version = 0
decode = 0x0000000000000000
renderingIntent = kCGRenderingIntentDefault
But vImageConverter_CreateWithCGImageFormat fails with kvImageInvalidImageFormat. Now if I change the destination format to use 32 bitsPerpixel and use alpha in the bitmap info the vImageConverter_CreateWithCGImageFormat does not return an error but I get a black image just like NSBitmapImageRep