+/*
+ * ocr.c forms a mostly-self-contained bit
+ * so we put its declarations in this separate file
+ */
+
#ifndef OCR_H
#define OCR_H
-#include <pam.h>
-#include <stdint.h>
-#include <inttypes.h>
-#include <assert.h>
+
+#define _GNU_SOURCE
+
#include <string.h>
+#include <stdio.h>
+#include <errno.h>
+#include <assert.h>
+#include <stdint.h>
#include <stdlib.h>
+#include <unistd.h>
+#include <stdarg.h>
+#include <inttypes.h>
+
#include <sys/types.h>
#include <sys/wait.h>
+
+typedef struct {
+ int w,h;
+ char d[];
+} CanonImage;
+
typedef uint32_t Pixcol;
#define PSPIXCOL(priscan) priscan##32
typedef struct {
const char *s; /* valid until next call to ocr() */
int l,r; /* column numbers */
- int ctx; /* match context index */
+ unsigned ctxmap; /* match context index */
} OcrResultGlyph;
-OcrResultGlyph *ocr(int w, int h, Pixcol cols[]);
+
+typedef const struct OcrCellTypeInfo *OcrCellType;
+extern const struct OcrCellTypeInfo ocr_celltype_text;
+extern const struct OcrCellTypeInfo ocr_celltype_number;
+
+
+typedef struct OcrReader OcrReader;
+OcrReader *ocr_init(int h);
+
+OcrResultGlyph *ocr(OcrReader *rd, OcrCellType, int w, Pixcol cols[]);
/* return value is array terminated by {0,-1,-1}
* array is valid until next call to ocr()
*/
-void ocr_init(void);
+
+/*----- debugging arrangements, rather contingent -----*/
+
+#define DEBUG_FLAG_LIST \
+ DF(findypp) \
+ DF(pages) \
+ DF(rect) \
+ DF(ocr) \
+ DF(callout)
+
+enum {
+#define DF(f) dbg__shift_##f,
+ DEBUG_FLAG_LIST
+#undef DF
+};
+enum {
+#define DF(f) dbg_##f = 1 << dbg__shift_##f,
+ DEBUG_FLAG_LIST
+#undef DF
+};
+
+unsigned debug_flags;
+
+#define DEBUGP(f) (!!(debug_flags & dbg_##f))
+
+void debug_flush(void);
#define eassert assert
-#define debug stdout
+#define debug stderr
+
+const char *get_vardir(void);
+
+#define DEFINE_VWRAPPERF(decls, funcf) \
+ decls void funcf(const char *fmt, ...) { \
+ va_list al; va_start(al,fmt); v##funcf(fmt,al); va_end(al); \
+ }
+
+#define DEBUG_DEFINE_SOME_DEBUGF(fl,funcf) \
+ static void v##funcf(const char *fmt, va_list al) { \
+ if (DEBUGP(fl)) \
+ vfprintf(debug,fmt,al); \
+ } \
+ DEFINE_VWRAPPERF(static, funcf)
+
+#define DEBUG_DEFINE_DEBUGF(fl) DEBUG_DEFINE_SOME_DEBUGF(fl,debugf)
#endif /*OCR_H*/