PImage color format

thomaslengeling

Hey

I'm current sending live footage from a HD camera to processing. The image formats between processing and the c++ program are different. So the image/video that I'm sending is current in a RGBA image format (also can supports BGRA), so as I know in processing/Java only supports ARGB color format and RGB.

Here is the reading image code in processing.

        public PImage GetImage() {
            PImage img = parent.createImage(WIDTH, HEIGHT, parent.ARGB);
            PApplet.arrayCopy(Nui_GetImage(), img.pixels);
            img.updatePixels();
            return img;
        }

Is there a way to make a fast the conversion between RGBA to ARGB because the incoming video is in 1080p, or there is another Image library that supports RGBA format in processing or java.

Thomas

GoToLoop

Perhaps something like this? %%-

/**
 * RGBa_&_BGRa_To_aRGB (v1.04)
 * by GoToLoop (2014/Apr)
 *
 * forum.processing.org/two/discussion/4461/pimage-color-format
 */

static final color RGBa_To_aRGB(final color c) {
  return c<<030 | c>>>010;
}

static final color BGRa_To_aRGB(final color c) {
  final color a = c<<030;
  final color b = c>>>030;

  final color r = c<<010 & PImage.RED_MASK;
  final color g = c>>010 & PImage.GREEN_MASK;

  return a|r|g|b;
}

void setup() {
  println(hex(RGBa_To_aRGB(0x8040BBaa)));
  println(hex(BGRa_To_aRGB(0xBB4080aa)));
  exit();
}