private void setBuf()

in java/org/libjpegturbo/turbojpeg/YUVImage.java [221:268]
43 lines of code
26 McCabe index (conditional complexity)

  private void setBuf(byte[][] planes, int[] offsets, int width, int[] strides,
                     int height, int subsamp, boolean alloc) {
    if ((planes == null && !alloc) || width < 1 || height < 1 || subsamp < 0 ||
        subsamp >= TJ.NUMSAMP)
      throw new IllegalArgumentException("Invalid argument in YUVImage.setBuf()");

    int nc = (subsamp == TJ.SAMP_GRAY ? 1 : 3);
    if ((planes != null && planes.length != nc) ||
        (offsets != null && offsets.length != nc) ||
        (strides != null && strides.length != nc))
      throw new IllegalArgumentException("YUVImage.setBuf(): planes, offsets, or strides array is the wrong size");

    if (planes == null)
      planes = new byte[nc][];
    if (offsets == null)
      offsets = new int[nc];
    if (strides == null)
      strides = new int[nc];

    for (int i = 0; i < nc; i++) {
      int pw = TJ.planeWidth(i, width, subsamp);
      int ph = TJ.planeHeight(i, height, subsamp);
      int planeSize = TJ.planeSizeYUV(i, width, strides[i], height, subsamp);

      if (strides[i] == 0)
        strides[i] = pw;
      if (alloc) {
        if (strides[i] < pw)
          throw new IllegalArgumentException("Stride must be >= plane width when allocating a new YUV image");
        planes[i] = new byte[strides[i] * ph];
      }
      if (planes[i] == null || offsets[i] < 0)
        throw new IllegalArgumentException("Invalid argument in YUVImage.setBuf()");
      if (strides[i] < 0 && offsets[i] - planeSize + pw < 0)
        throw new IllegalArgumentException("Stride for plane " + i +
                                           " would cause memory to be accessed below plane boundary");
      if (planes[i].length < offsets[i] + planeSize)
        throw new IllegalArgumentException("Image plane " + i +
                                           " is not large enough");
    }

    yuvPlanes = planes;
    yuvOffsets = offsets;
    yuvWidth = width;
    yuvStrides = strides;
    yuvHeight = height;
    yuvSubsamp = subsamp;
  }