diff options
Diffstat (limited to 'filter/faxe.h')
| -rw-r--r-- | filter/faxe.h | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/filter/faxe.h b/filter/faxe.h new file mode 100644 index 00000000..dd3fc121 --- /dev/null +++ b/filter/faxe.h @@ -0,0 +1,37 @@ +/* Fax G3/G4 tables */ + +typedef struct cfe_code_s cfe_code; + +struct cfe_code_s +{ + unsigned short code; + unsigned short nbits; +}; + +typedef struct cf_runs_s { + cfe_code termination[64]; + cfe_code makeup[41]; +} cf_runs; + +/* Encoding tables */ + +/* Codes common to 1-D and 2-D encoding. */ +extern const cfe_code cf_run_eol; +extern const cf_runs cf_white_runs, cf_black_runs; +extern const cfe_code cf_uncompressed[6]; +extern const cfe_code cf_uncompressed_exit[10]; /* indexed by 2 x length of */ + +/* 1-D encoding. */ +extern const cfe_code cf1_run_uncompressed; + +/* 2-D encoding. */ +enum { cf2_run_vertical_offset = 3 }; +extern const cfe_code cf2_run_pass; +extern const cfe_code cf2_run_vertical[7]; /* indexed by b1 - a1 + offset */ +extern const cfe_code cf2_run_horizontal; +extern const cfe_code cf2_run_uncompressed; + +/* 2-D Group 3 encoding. */ +extern const cfe_code cf2_run_eol_1d; +extern const cfe_code cf2_run_eol_2d; + |