Palette File Format
-------------------

  offset  length  content

  0       8       "DISPpal0"
  8       4       number of colors(Intel order).
  12      4       R,G,B,A for each color.
  ...     ...     ......



YUV Format (from Berkeley MPEG ENCODER package)
----------

The U and V components are subsampled 4:1.

To give you an idea of what format the YUV file must be in, the following
code will read in a YUV file:

    unsigned char **y_data, **cr_data, **cb_data;

    void      	ReadYUV(char *fileName, int width, int height)
    {
	FILE *fpointer;
	register int y;

	/* should allocate memory for y_data, cr_data, cb_data here */

	fpointer = fopen(fileName, "r");

	for (y = 0; y < height; y++)			/* Y */
	    fread(y_data[y], 1, width, fpointer);

	for (y = 0; y < height / 2; y++)			/* U */
	    fread(cb_data[y], 1, width / 2, fpointer);

	for (y = 0; y < height / 2; y++)			/* V */
	    fread(cr_data[y], 1, width / 2, fpointer);

	fclose(fpointer);
    }



Raw RGB Format
--------------

  for (y = 0; y < height; ++y)
    for (x = 0; x < width; ++x) {
      read RED;		/* 1 byte */
      read GREEN;	/* 1 byte */
      read BLUE;	/* 1 byte */
    }



Raw GREY Format
---------------

  for (y = 0; y < height; ++y)
    for (x = 0; x < width; ++x)
      read GREY;	/* 1 byte */