init repo

ActiveX/ASCOfficeUtils/PNM/headers/pm_c_util.h

@@ -0,0 +1,97 @@
+#ifndef PM_C_UTIL_INCLUDED
+#define PM_C_UTIL_INCLUDED
+
+/* Magic constants. */
+
+#define PPM_MAGIC1 'P'
+#define PPM_MAGIC2 '3'
+#define RPPM_MAGIC2 '6'
+#define PPM_FORMAT (PPM_MAGIC1 * 256 + PPM_MAGIC2)
+#define RPPM_FORMAT (PPM_MAGIC1 * 256 + RPPM_MAGIC2)
+#define PPM_TYPE PPM_FORMAT
+
+/* Magic constants. */
+#define PBM_MAGIC1 'P'
+#define PBM_MAGIC2 '1'
+#define RPBM_MAGIC2 '4'
+#define PBM_FORMAT (PBM_MAGIC1 * 256 + PBM_MAGIC2)
+#define RPBM_FORMAT (PBM_MAGIC1 * 256 + RPBM_MAGIC2)
+#define PBM_TYPE PBM_FORMAT
+
+/* Magic constants. */
+#define PGM_MAGIC1 'P'
+#define PGM_MAGIC2 '2'
+#define RPGM_MAGIC2 '5'
+#define PGM_FORMAT (PGM_MAGIC1 * 256 + PGM_MAGIC2)
+#define RPGM_FORMAT (PGM_MAGIC1 * 256 + RPGM_MAGIC2)
+#define PGM_TYPE PGM_FORMAT
+
+#define PPM_ASSIGN(p,red,grn,blu) \
+  do { (p).r = (red); (p).g = (grn); (p).b = (blu); } while (0)
+#define PNM_ASSIGN(x,r,g,b) PPM_ASSIGN(x,r,g,b)
+
+/* Macro for turning a format number into a type number. */
+#define PBM_FORMAT_TYPE(f) \
+  ((f) == PBM_FORMAT || (f) == RPBM_FORMAT ? PBM_TYPE : -1)
+
+/* Macro for turning a format number into a type number. */
+#define PGM_FORMAT_TYPE(f) ((f) == PGM_FORMAT || (f) == RPGM_FORMAT ? PGM_TYPE : PBM_FORMAT_TYPE(f))
+
+/* Macro for turning a format number into a type number. */
+#define PPM_FORMAT_TYPE(f) \
+  ((f) == PPM_FORMAT || (f) == RPPM_FORMAT ? PPM_TYPE : PGM_FORMAT_TYPE(f))
+
+#define PNM_FORMAT_TYPE(f) PPM_FORMAT_TYPE(f)
+
+#define pbm_packed_bytes(cols) (((cols)+7)/8)
+
+typedef unsigned int gray;
+typedef gray pixval;
+
+typedef struct {
+    pixval r, g, b;
+} pixel;
+
+#define PPM_GETR(p) ((p).r)
+#define PPM_GETG(p) ((p).g)
+#define PPM_GETB(p) ((p).b)
+
+typedef pixel xel;
+typedef pixval xelval;
+
+#define PNM_GET1(x) PPM_GETB(x)
+
+typedef unsigned char bit;
+#define PBM_WHITE 0
+#define PBM_BLACK 1
+
+/* NOTE: do not use "bool" as a type in an external interface.  It could
+   have different definitions on either side of the interface.  Even if both
+   sides include this interface header file, the conditional compilation
+   here means one side may use the typedef below and the other side may
+   use some other definition.  For an external interface, be safe and just
+   use "int".
+*/
+
+/* We used to assume that if TRUE was defined, then bool was too.
+   However, we had a report on 2001.09.21 of a Tru64 system that had
+   TRUE but not bool and on 2002.03.21 of an AIX 4.3 system that was
+   likewise.  So now we define bool all the time, unless the macro
+   HAVE_BOOL is defined.  If someone is using the Netpbm libraries and
+   also another library that defines bool, he can either make the
+   other library define/respect HAVE_BOOL or just define HAVE_BOOL in
+   the file that includes pm_config.h or with a compiler option.  Note
+   that C++ always has bool.  
+
+   A preferred way of getting booleans is <stdbool.h>.  But it's not
+   available on all platforms, and it's easy to reproduce what it does
+   here.
+*/
+#ifndef TRUE
+  #define TRUE 1
+  #endif
+#ifndef FALSE
+  #define FALSE 0
+#endif
+
+#endif