+#include "common.h"
+
+
+#define AADEPTH 2
+#define AAMAXVAL ((1<<AADEPTH)-1)
+ /* Change this ? Also change in
+ * dictionary-manager set aadepth
+ * dictionary-update-receiver my $aadepth
+ */
+
+
+typedef uint32_t Pixcolv;
+#define PIXCOL_P_PER_WORD (32 / AADEPTH)
+
+#define OCR_MAX_H 30
+#define PIXCOL_WORDS ((OCR_MAX_H + PIXCOL_P_PER_WORD - 1) / PIXCOL_P_PER_WORD)
+
+typedef struct { Pixcolv w[PIXCOL_WORDS]; } Pixcol;
+
+static inline int pixcol_p_word(int y) {
+ return y / PIXCOL_P_PER_WORD;
+}
+static inline int pixcol_p_shift(int y) {
+ return (y % PIXCOL_P_PER_WORD)*AADEPTH;
+}
+static inline void pixcol_p_add(Pixcol *pixcol, int y, unsigned pixval) {
+ pixcol->w[pixcol_p_word(y)] |= pixval << pixcol_p_shift(y);
+}
+static inline unsigned int pixcol_p_get(const Pixcol *pixcol, int y) {
+ return (pixcol->w[pixcol_p_word(y)] >> pixcol_p_shift(y)) & AAMAXVAL;
+}
+static inline int pixcol_cmp(const Pixcol *pixcol1, const Pixcol *pixcol2) {
+ return memcmp(pixcol1, pixcol2, sizeof(*pixcol1));
+}
+static inline int pixcol_nonzero(const Pixcol *pixcol) {
+ static const Pixcol zero;
+ return pixcol_cmp(pixcol, &zero);
+}
+
+#if AADEPTH==3
+# define PRPIXCOL1 "%0*" PRIo32
+# define PIXCOL_P_PER_FMT 1
+#elif AADEPTH==2
+# define PRPIXCOL1 "%0*" PRIx32
+# define PIXCOL_P_PER_FMT 2
+#else
+# error need to implement PRPIXCOL1 for this AADEPTH
+#endif