#define channel_width 21
#define channel_height 21
static unsigned char channel_bits[] = {
   0x00, 0x00, 0x00, 0x00, 0x1f, 0x00, 0xc0, 0x7f, 0x00, 0xe0, 0xff, 0x00,
   0xf0, 0xe0, 0x01, 0x70, 0xc0, 0x01, 0x70, 0xc0, 0x01, 0x78, 0x80, 0x01,
   0x78, 0x00, 0x00, 0x78, 0x00, 0x00, 0x78, 0x00, 0x00, 0x78, 0x00, 0x00,
   0x78, 0x00, 0x00, 0x78, 0x80, 0x01, 0x70, 0xc0, 0x01, 0x70, 0xc0, 0x01,
   0xf0, 0xe0, 0x01, 0xe0, 0xff, 0x00, 0xc0, 0x7f, 0x00, 0x00, 0x1f, 0x00,
   0x00, 0x00, 0x00};