Create Subversion repository

git-svn-id: http://svn.code.sf.net/p/netpbm/code/trunk@1 9d0c8265-081b-0410-96cb-a4ca84ce46f8

1 files changed, 111 insertions, 0 deletions

diff --git a/lib/ppmcmap.h b/lib/ppmcmap.h
new file mode 100644
index 00000000..b44dcbea
--- /dev/null
+++ b/lib/ppmcmap.h
@@ -0,0 +1,111 @@
+#ifndef PPMCMAP_INCLUDED
+#define PPMCMAP_INCLUDED
+/* ppmcmap.h - header file for colormap routines in libppm
+*/
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+#if 0
+} /* to fake out automatic code indenters */
+#endif
+
+
+/* Color histogram stuff. */
+
+typedef struct colorhist_item* colorhist_vector;
+struct colorhist_item {
+    pixel color;
+    int value;
+};
+
+typedef struct colorhist_list_item* colorhist_list;
+struct colorhist_list_item {
+    struct colorhist_item ch;
+    colorhist_list next;
+};
+
+colorhist_vector
+ppm_computecolorhist( pixel ** const pixels, 
+                      const int cols, const int rows, const int maxcolors, 
+                      int * const colorsP );
+colorhist_vector
+ppm_computecolorhist2(FILE * const ifp,
+                      const int cols, const int rows, 
+                      const pixval maxval, const int format, 
+                      const int maxcolors, int * const colorsP );
+
+void
+ppm_addtocolorhist( colorhist_vector chv, 
+                    int * const colorsP, const int maxcolors, 
+                    const pixel * const colorP, 
+                    const int value, const int position );
+
+void
+ppm_freecolorhist(colorhist_vector const chv);
+
+
+/* Color hash table stuff. */
+
+typedef colorhist_list* colorhash_table;
+
+colorhash_table
+ppm_computecolorhash( pixel ** const pixels, 
+                      const int cols, const int rows, 
+                      const int maxcolors, int * const colorsP );
+
+colorhash_table
+ppm_computecolorhash2(FILE * const ifp,
+                      const int cols, const int rows, 
+                      const pixval maxval, const int format, 
+                      const int maxcolors, int * const colorsP);
+
+int
+ppm_lookupcolor(colorhash_table const cht, 
+                const pixel *   const colorP );
+
+colorhist_vector
+ppm_colorhashtocolorhist(colorhash_table const cht, 
+                         int             const maxcolors);
+
+colorhash_table
+ppm_colorhisttocolorhash(colorhist_vector const chv, 
+                         int              const colors);
+
+int
+ppm_addtocolorhash(colorhash_table const cht, 
+                   const pixel *   const colorP, 
+                   int             const value);
+
+void
+ppm_delfromcolorhash(colorhash_table const cht, 
+                     const pixel *   const colorP);
+
+
+colorhash_table
+ppm_alloccolorhash(void);
+
+void
+ppm_freecolorhash(colorhash_table const cht);
+
+
+colorhash_table ppm_colorrowtocolorhash ARGS((pixel *colorrow, int ncolors));
+pixel * ppm_computecolorrow ARGS((pixel **pixels, int cols, int rows, int maxcolors, int *ncolorsP));
+pixel * ppm_mapfiletocolorrow ARGS((FILE *file, int maxcolors, int *ncolorsP, pixval *maxvalP));
+void    ppm_colorrowtomapfile ARGS((FILE *ofp, pixel *colormap, int ncolors, pixval maxval));
+void    ppm_sortcolorrow (pixel * const colorrow, const int ncolors, 
+                          int (*cmpfunc)(pixel *, pixel *) );
+int     ppm_addtocolorrow ARGS((pixel *colorrow, int *ncolorsP, int maxcolors, pixel *pixelP));
+
+int
+ppm_findclosestcolor(const pixel * const colormap, 
+                     int           const ncolors, 
+                     const pixel * const pP);
+
+/* standard sort function for ppm_sortcolorrow() */
+#define PPM_STDSORT     (int (*)(pixel *, pixel *))0
+#endif
+
+#ifdef __cplusplus
+}
+#endif