Add pnm_formatpamtuples, pnm_writepamrowpart

git-svn-id: http://svn.code.sf.net/p/netpbm/code/trunk@4214 9d0c8265-081b-0410-96cb-a4ca84ce46f8

1 files changed, 26 insertions, 0 deletions

diff --git a/lib/pam.h b/lib/pam.h
index aebf529a..88b8c2bd 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
@@ -341,6 +353,12 @@ 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 +373,14 @@ 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