#define SHIFTING_STOPPED 0
#define SHIFTING_FORWARD 1
#define SHIFTING_REVERSE 2
#define SHIFTING_DEFAULT SHIFTING_REVERSE

#define PATTERN_OFF     0
#define PATTERN_RAINBOW 1
#define PATTERN_RED     2
#define PATTERN_DEFAULT PATTERN_RAINBOW

#define OFFSET_INCREMENT_DEFAULT 2

// FIXME: DIM_FACTOR is for testing only; remove this when ready to embed
#define DIM_FACTOR 1

#define GAMMA_CORRECTION { \
  0,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1, \
  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  2,  2,  2,  2,  2,  2, \
  2,  2,  2,  2,  2,  2,  2,  3,  3,  3,  3,  3,  3,  3,  4,  4, \
  4,  4,  4,  4,  4,  5,  5,  5,  5,  5,  6,  6,  6,  6,  7,  7, \
  7,  7,  8,  8,  8,  8,  9,  9,  9, 10, 10, 10, 11, 11, 11, 12, \
 12, 13, 13, 13, 14, 14, 15, 15, 15, 16, 16, 17, 17, 18, 18, 19, \
 19, 20, 20, 21, 21, 22, 22, 23, 24, 24, 25, 25, 26, 27, 27, 28, \
 29, 29, 30, 31, 31, 32, 33, 34, 34, 35, 36, 37, 37, 38, 39, 40, \
 41, 42, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 52, 53, 54, \
 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 69, 70, 71, 72, \
 73, 75, 76, 77, 78, 80, 81, 82, 84, 85, 86, 88, 89, 90, 92, 93, \
 95, 96, 98, 99,101,102,104,105,107,108,110,111,113,115,116,118, \
120,121,123,125,126,128,130,132,133,135,137,139,141,142,144,146, \
148,150,152,154,156,158,160,162,164,166,168,170,172,174,176,179, \
181,183,185,187,189,192,194,196,199,201,203,206,208,210,213,215, \
217,220,222,225,227,230,232,235,238,240,243,245,248,251,253,255}