Method _nExtractAlpha

shared/java/Bitmap.java:1006–1006

(long ptr, long dstPtr, long paintPtr)

    @ApiStatus.Internal public static native boolean _nExtractSubset(long ptr, long dstPtr, int left, int top, int right, int bottom);
    @ApiStatus.Internal public static native byte[]  _nReadPixels(long ptr, int width, int height, int colorType, int alphaType, long colorSpacePtr, long dstRowBytes, int srcX, int srcY);
    @ApiStatus.Internal public static native IPoint  _nExtractAlpha(long ptr, long dstPtr, long paintPtr);
    @ApiStatus.Internal public static native ByteBuffer _nPeekPixels(long ptr);
    @ApiStatus.Internal public static native long    _nMakeShader(long ptr, int tmx, int tmy, long samplingMode, float[] localMatrix);
}