CocoaDev

Edit AllPages

how do I make a NSImage from a C-Source image? (like the ones you can make with GIMP or GraphicConverter)

I have a struct like this:

static const struct { unsigned int pd_width; unsigned int pd_height; unsigned int bytes_per_pixel; /* 3:RGB, 4:RGBA */ unsigned char image_pixel_data[0xbf62]; }

–PtxMac

NSBitmapImageRep *bir;
BOOL hasAlpha;
if (cSourceImage.bytes_per_pixel==3) hasAlpha=NO;
else if (cSourceImage.bytes_per_pixel==4) hasAlpha=YES;

int bitsPerSample=8;    //    < - usually 8

bir=[[[NSBitmapImageRep alloc] initWithBitmapDataPlanes:nil
        pixelsWide:cSourceImage.pd_width
        pixelsHigh:cSourceImage.pd_height
        bitsPerSample:bitsPerSample   
        samplesPerPixel:cSourceImage.bytes_per_pixel	
        hasAlpha:hasAlpha
        isPlanar:YES
        colorSpaceName:NSDeviceRGBColorSpace
        bytesPerRow:cSourceImage.bytes_per_pixel*cSourceImage.pd_width
        bitsPerPixel:bitsPerSample*cSourceImage.bytes_per_pixel] autorelease]; 

char *bytes=[bir bitmapData];
int byteCount=cSourceImage.bytes_per_pixel*cSourceImage.pd_width*cSourceImage.pd_height;
memcpy(bytes, cSoureImage.image_pixel_data, byteCount);

NSImage *myImage;
myImage=[[[NSImage alloc] initWithData:[bir TIFFRepresentation]] autorelease];

NSBitmapImageRep’s documentation is pretty good. –zootbobbalu