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/* G3 fax format declarations */
#ifndef G3_H_INCLUDED
#define G3_H_INCLUDED
/* G3 is nearly universal as the format for fax transmissions in the
US. Its full name is CCITT Group 3 (G3). It is specified in
Recommendations T.4 and T.30 and in EIA Standards EIA-465 and
EIA-466. It dates to 1993.
G3 faxes are 204 dots per inch (dpi) horizontally and 98 dpi (196
dpi optionally, in fine-detail mode) vertically. Since G3 neither
assumes error free transmission nor retransmits when errors occur,
the encoding scheme used is differential only over small segments
never exceeding 2 lines at standard resolution or 4 lines for
fine-detail. (The incremental G3 encoding scheme is called
two-dimensional and the number of lines so encoded is specified by
a parameter called k.)
G3 specifies much more than the format of the bit stream, which is
the subject of this header file. It also specifies layers
underneath the bit stream.
There is also the newer G4.
*/
typedef struct g3TableEntry {
short int code;
short int length;
} g3TableEntry;
static struct g3TableEntry ttable[] = {
/* TERMWHITE TERMBLACK */
{ 0x35, 8 }, { 0x37, 10 }, /* white 0 , black 0 */
{ 0x07, 6 }, { 0x02, 3 },
{ 0x07, 4 }, { 0x03, 2 },
{ 0x08, 4 }, { 0x02, 2 },
{ 0x0b, 4 }, { 0x03, 3 },
{ 0x0c, 4 }, { 0x03, 4 },
{ 0x0e, 4 }, { 0x02, 4 },
{ 0x0f, 4 }, { 0x03, 5 },
{ 0x13, 5 }, { 0x05, 6 },
{ 0x14, 5 }, { 0x04, 6 },
{ 0x07, 5 }, { 0x04, 7 },
{ 0x08, 5 }, { 0x05, 7 },
{ 0x08, 6 }, { 0x07, 7 },
{ 0x03, 6 }, { 0x04, 8 },
{ 0x34, 6 }, { 0x07, 8 },
{ 0x35, 6 }, { 0x18, 9 },
{ 0x2a, 6 }, { 0x17, 10 },
{ 0x2b, 6 }, { 0x18, 10 },
{ 0x27, 7 }, { 0x08, 10 },
{ 0x0c, 7 }, { 0x67, 11 },
{ 0x08, 7 }, { 0x68, 11 },
{ 0x17, 7 }, { 0x6c, 11 },
{ 0x03, 7 }, { 0x37, 11 },
{ 0x04, 7 }, { 0x28, 11 },
{ 0x28, 7 }, { 0x17, 11 },
{ 0x2b, 7 }, { 0x18, 11 },
{ 0x13, 7 }, { 0xca, 12 },
{ 0x24, 7 }, { 0xcb, 12 },
{ 0x18, 7 }, { 0xcc, 12 },
{ 0x02, 8 }, { 0xcd, 12 },
{ 0x03, 8 }, { 0x68, 12 },
{ 0x1a, 8 }, { 0x69, 12 },
{ 0x1b, 8 }, { 0x6a, 12 },
{ 0x12, 8 }, { 0x6b, 12 },
{ 0x13, 8 }, { 0xd2, 12 },
{ 0x14, 8 }, { 0xd3, 12 },
{ 0x15, 8 }, { 0xd4, 12 },
{ 0x16, 8 }, { 0xd5, 12 },
{ 0x17, 8 }, { 0xd6, 12 },
{ 0x28, 8 }, { 0xd7, 12 },
{ 0x29, 8 }, { 0x6c, 12 },
{ 0x2a, 8 }, { 0x6d, 12 },
{ 0x2b, 8 }, { 0xda, 12 },
{ 0x2c, 8 }, { 0xdb, 12 },
{ 0x2d, 8 }, { 0x54, 12 },
{ 0x04, 8 }, { 0x55, 12 },
{ 0x05, 8 }, { 0x56, 12 },
{ 0x0a, 8 }, { 0x57, 12 },
{ 0x0b, 8 }, { 0x64, 12 },
{ 0x52, 8 }, { 0x65, 12 },
{ 0x53, 8 }, { 0x52, 12 },
{ 0x54, 8 }, { 0x53, 12 },
{ 0x55, 8 }, { 0x24, 12 },
{ 0x24, 8 }, { 0x37, 12 },
{ 0x25, 8 }, { 0x38, 12 },
{ 0x58, 8 }, { 0x27, 12 },
{ 0x59, 8 }, { 0x28, 12 },
{ 0x5a, 8 }, { 0x58, 12 },
{ 0x5b, 8 }, { 0x59, 12 },
{ 0x4a, 8 }, { 0x2b, 12 },
{ 0x4b, 8 }, { 0x2c, 12 },
{ 0x32, 8 }, { 0x5a, 12 },
{ 0x33, 8 }, { 0x66, 12 },
{ 0x34, 8 }, { 0x67, 12 }, /* white 63 , black 63 */
/* mtable */
/* MKUPWHITE MKUPBLACK */
{ 0x00, 0 }, { 0x00, 0 }, /* dummy to simplify pointer math */
{ 0x1b, 5 }, { 0x0f, 10 }, /* white 64 , black 64 */
{ 0x12, 5 }, { 0xc8, 12 },
{ 0x17, 6 }, { 0xc9, 12 },
{ 0x37, 7 }, { 0x5b, 12 },
{ 0x36, 8 }, { 0x33, 12 },
{ 0x37, 8 }, { 0x34, 12 },
{ 0x64, 8 }, { 0x35, 12 },
{ 0x65, 8 }, { 0x6c, 13 },
{ 0x68, 8 }, { 0x6d, 13 },
{ 0x67, 8 }, { 0x4a, 13 },
{ 0xcc, 9 }, { 0x4b, 13 },
{ 0xcd, 9 }, { 0x4c, 13 },
{ 0xd2, 9 }, { 0x4d, 13 },
{ 0xd3, 9 }, { 0x72, 13 },
{ 0xd4, 9 }, { 0x73, 13 },
{ 0xd5, 9 }, { 0x74, 13 },
{ 0xd6, 9 }, { 0x75, 13 },
{ 0xd7, 9 }, { 0x76, 13 },
{ 0xd8, 9 }, { 0x77, 13 },
{ 0xd9, 9 }, { 0x52, 13 },
{ 0xda, 9 }, { 0x53, 13 },
{ 0xdb, 9 }, { 0x54, 13 },
{ 0x98, 9 }, { 0x55, 13 },
{ 0x99, 9 }, { 0x5a, 13 },
{ 0x9a, 9 }, { 0x5b, 13 },
{ 0x18, 6 }, { 0x64, 13 },
{ 0x9b, 9 }, { 0x65, 13 },
{ 0x08, 11 }, { 0x08, 11 }, /* extable len = 1792 */
{ 0x0c, 11 }, { 0x0c, 11 },
{ 0x0d, 11 }, { 0x0d, 11 },
{ 0x12, 12 }, { 0x12, 12 },
{ 0x13, 12 }, { 0x13, 12 },
{ 0x14, 12 }, { 0x14, 12 },
{ 0x15, 12 }, { 0x15, 12 },
{ 0x16, 12 }, { 0x16, 12 },
{ 0x17, 12 }, { 0x17, 12 },
{ 0x1c, 12 }, { 0x1c, 12 },
{ 0x1d, 12 }, { 0x1d, 12 },
{ 0x1e, 12 }, { 0x1e, 12 },
{ 0x1f, 12 }, { 0x1f, 12 },
};
#define mtable ((ttable)+64*2)
#endif
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