How can i get informtion from an CGImageRef image?

Hi,

I would like to know how can i get information from a CGImageRef image to put them into initWithBitmapDataPlanes like bitsPerSample, hasAlpha, bitsPerPixel etc... ?
Thank you!

PHP:

    NSImage *imagePath = [[NSImage alloc] initWithContentsOfFile:@"/Users/bker/Desktop/TEST/001.jpg"];
    //NSImage *imagePath = [[NSImage alloc] initWithContentsOfFile:@"/Users/bker/Desktop/TEST/001.png"];
    //NSImage *imagePath = [[NSImage alloc] initWithContentsOfFile:@"/Users/bker/Desktop/TEST/001.tiff"];

    CGImageSourceRef asource = CGImageSourceCreateWithData((CFDataRef)[imagePath TIFFRepresentation], NULL);
    CGImageRef bitmap =  CGImageSourceCreateImageAtIndex(asource, 0, NULL);
    
    NSBitmapImageRep *bitmap = [NSBitmapImageRep alloc];
    [bitmap initWithBitmapDataPlanes:NULL
                              pixelsWide: ?
                              pixelsHigh: ?
                           bitsPerSample: ?
                         samplesPerPixel: ?
                                hasAlpha: ?
                                isPlanar: ?
                          colorSpaceName: ?
                            bitmapFormat: ?
                             bytesPerRow: ?
                            bitsPerPixel: ?
     ];