X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~yarrgweb/git?a=blobdiff_plain;f=yarrg%2Focr.h;fp=yarrg%2Focr.h;h=7d70b1de58a65b5600f5d8573aebab10439a1d3d;hb=c68fb80a6bbf7acbcac4b2cb2143f5fea745cd2b;hp=0000000000000000000000000000000000000000;hpb=b9cce976550d000f15e5a8f2b690740bdae1e468;p=ypp-sc-tools.main.git

diff --git a/yarrg/ocr.h b/yarrg/ocr.h
new file mode 100644
index 0000000..7d70b1d
--- /dev/null
+++ b/yarrg/ocr.h
@@ -0,0 +1,133 @@
+/*
+ * ocr.c forms a mostly-self-contained bit
+ * so we put its declarations in this separate file
+ */
+/*
+ *  This is part of ypp-sc-tools, a set of third-party tools for assisting
+ *  players of Yohoho Puzzle Pirates.
+ * 
+ *  Copyright (C) 2009 Ian Jackson <ijackson@chiark.greenend.org.uk>
+ * 
+ *  This program is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ * 
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ * 
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ * 
+ *  Yohoho and Puzzle Pirates are probably trademarks of Three Rings and
+ *  are used without permission.  This program is not endorsed or
+ *  sponsored by Three Rings.
+ */
+
+#ifndef OCR_H
+#define OCR_H
+
+#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
+
+# define PIXCOL_FMT_PER_WORD (PIXCOL_P_PER_WORD / PIXCOL_P_PER_FMT)
+
+#if PIXCOL_WORDS==2
+# define PIXCOL_PRFMT				\
+			      PRPIXCOL1 "-"	\
+			      PRPIXCOL1
+# define PIXCOL_PRVAL(pixcol)						\
+			      PIXCOL_FMT_PER_WORD, (pixcol).w[1],	\
+			      PIXCOL_FMT_PER_WORD, (pixcol).w[0]
+#elif PIXCOL_WORDS==3
+# define PIXCOL_PRFMT				\
+			      PRPIXCOL1 "-"	\
+			      PRPIXCOL1 "-"	\
+			      PRPIXCOL1
+# define PIXCOL_PRVAL(pixcol)						\
+			      PIXCOL_FMT_PER_WORD, (pixcol).w[2],	\
+			      PIXCOL_FMT_PER_WORD, (pixcol).w[1],	\
+			      PIXCOL_FMT_PER_WORD, (pixcol).w[0]
+#else
+# error need to implement PIXCOL_PR{FMT,VAL} for this PIXCOL_WORDS
+#endif
+
+typedef struct {
+  const char *s; /* valid until next call to ocr() */
+  int l,r; /* column numbers */
+  int match; /* match context index */
+  unsigned ctxmap; /* possible match contexts */
+} OcrResultGlyph;
+
+
+typedef const struct OcrCellTypeInfo *OcrCellType;
+extern const struct OcrCellTypeInfo ocr_celltype_text;
+extern const struct OcrCellTypeInfo ocr_celltype_number;
+const char *ocr_celltype_name(OcrCellType ct);
+
+
+typedef struct OcrReader OcrReader;
+OcrReader *ocr_init(int h);
+void ocr_showcharsets(void);
+
+OcrResultGlyph *ocr(OcrReader *rd, OcrCellType, int w, const Pixcol cols[]);
+  /* return value is array terminated by {0,-1,-1}
+   * array is valid until next call to ocr()
+   */
+
+
+extern const char *o_resolver;
+
+FILE *resolve_start(void);
+void resolve_finish(void);
+
+
+#endif /*OCR_H*/