private void applyOverlay(
int gg0000,
WritableRaster raster,
int frameIndex,
ImageReadParam param,
int outBits,
byte[] ovlyData) {
Attributes ovlyAttrs = metadata.getAttributes();
int grayscaleValue = 0xffff;
if (param instanceof DicomImageReadParam) {
DicomImageReadParam dParam = (DicomImageReadParam) param;
Attributes psAttrs = dParam.getPresentationState();
if (psAttrs != null) {
if (psAttrs.containsValue(Tag.OverlayData | gg0000)) ovlyAttrs = psAttrs;
grayscaleValue = Overlays.getRecommendedDisplayGrayscaleValue(psAttrs, gg0000);
} else grayscaleValue = dParam.getOverlayGrayscaleValue();
}
Overlays.applyOverlay(
ovlyData != null ? 0 : frameIndex,
raster,
ovlyAttrs,
gg0000,
grayscaleValue >>> (16 - outBits),
ovlyData);
}
