I am attempting to load a jpeg image into a vImage_Buffer.
I am just trying to get the data in an ARGB format. This code works fine in the Xcode 15 build , but fails with kvImageInvalidParameter error from vImageBuffer_InitWithCGImage in the Xcode 26 build.
This code is written in ObjectiveC++.
Here is a code fragment:
int CDib_ARGB::Load(LPCSTR pFilename)
{
int rc = 0;
if (NULL == m_pRaw_vImage_Buffer)
{
NSString *pNS_filename = [[NSString alloc]initWithUTF8String:pFilename];
NSImage *pNSImage = [[NSImage alloc] initWithContentsOfFile:pNS_filename];
if (nil == pNSImage)
rc = -1;
else
{
int width = pNSImage.size.width;
int height = pNSImage.size.height;
if (pNSImage.representations)
{
NSImageRep *imageRep;
int jj;
width = 0;
height = 0;
for (jj = 0; jj < pNSImage.representations.count; jj++)
{
imageRep = pNSImage.representations[jj];
if (imageRep.pixelsWide > width)
width = imageRep.pixelsWide;
if (imageRep.pixelsHigh > height)
height = imageRep.pixelsHigh;
}
}
NSSize imageSize = NSMakeSize(width, height);
NSRect imageRect = NSMakeRect(0, 0, width, height);
pNSImage.size = imageSize;
CGImageRef cgImage = [pNSImage CGImageForProposedRect:&imageRect context:NULL hints:nil];
if (nil == cgImage)
rc = -1;
else
{
//Alloc and load vImage_Buffer.
vImage_Buffer *pvImage_Buffer = new vImage_Buffer;
if (NULL == pvImage_Buffer)
rc = -1;
else
{
vImage_CGImageFormat format;
format.bitsPerComponent = 8;
format.bitsPerPixel = 32;
format.colorSpace = nil;
format.bitmapInfo = kCGImageAlphaFirst | kCGBitmapByteOrderDefault;//ARGB8888
format.version = 0;
format.decode = nil;
format.renderingIntent = kCGRenderingIntentDefault;
memset(pvImage_Buffer, 0, sizeof(vImage_Buffer));
long status = vImageBuffer_InitWithCGImage(pvImage_Buffer, &format, nil, cgImage, kvImagePrintDiagnosticsToConsole);
if (kvImageNoError != status)
{ //This is where Xcode 26 sends me.
delete pvImage_Buffer;
rc = -1;
}
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