diff options
Diffstat (limited to 'lib/pam.h')
| -rw-r--r-- | lib/pam.h | 37 |
1 files changed, 34 insertions, 3 deletions
diff --git a/lib/pam.h b/lib/pam.h index aebf529a..0b8c068a 100644 --- a/lib/pam.h +++ b/lib/pam.h @@ -136,6 +136,18 @@ struct pam { /* The plane number of the opacity plane; meaningless if 'haveOpacity' is false or 'visual' is false. */ + int is_seekable; /* boolean */ + /* The file 'file' is seekable -- you can set the position of next + reading or writing to anything and any time. + + If libnetpbm cannot tell if it is seekable or not, this is false. + */ + pm_filepos raster_pos; + /* The file position of the raster (which is also the end of the + header). + + Meaningless if 'is_seekable' is false. + */ }; #define PAM_HAVE_ALLOCATION_DEPTH 1 @@ -198,7 +210,7 @@ typedef sample *tuple; of the image (see pam.depth above). */ -#define PAM_OVERALL_MAXVAL 65535 +#define PAM_OVERALL_MAXVAL 65535lu /* Note: xv uses the same "P7" signature for its thumbnail images (it started using it years before PAM and unbeknownst to the designer @@ -251,8 +263,6 @@ pnm_scalesample(sample const source, return (source * newmaxval + (oldmaxval/2)) / oldmaxval; } - - void pnm_scaletuple(const struct pam * const pamP, tuple const dest, @@ -293,6 +303,9 @@ pnm_getopacity(const struct pam * const pamP, void pnm_createBlackTuple(const struct pam * const pamP, tuple * const blackTupleP); +void +pnm_createWhiteTuple(const struct pam * const pamP, tuple * const whiteTupleP); + tuple pnm_allocpamtuple(const struct pam * const pamP); @@ -341,6 +354,12 @@ void pnm_writepaminit(struct pam * const pamP); void +pnm_formatpamtuples(const struct pam * const pamP, + const tuple * const tuplerow, + unsigned char * const outbuf, + unsigned int const nTuple, + unsigned int * const rowSizeP); +void pnm_formatpamrow(const struct pam * const pamP, const tuple * const tuplerow, unsigned char * const outbuf, @@ -355,6 +374,14 @@ pnm_writepamrowmult(const struct pam * const pamP, unsigned int const rptcnt); void +pnm_writepamrowpart(const struct pam * const pamP, + const tuple * const tuplerow, + unsigned int const firstRow, + unsigned int const firstCol, + unsigned int const rowCt, + unsigned int const colCt); + +void pnm_writepam(struct pam * const pamP, tuple ** const tuplearray); void @@ -564,6 +591,10 @@ tuple pnm_backgroundtuple(struct pam * const pamP, tuple ** const tuples); +tuple +pnm_backgroundtuplerow(const struct pam * const pamP, + tuple * const tuplerow); + /*---------------------------------------------------------------------------- These are meant for passing to pm_system() as Standard Input feeder and Standard Output accepter. |