X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~yarrgweb/git?p=ypp-sc-tools.web-live.git;a=blobdiff_plain;f=pctb%2Fconvert.c;h=c8082e697cea3ff4f70b26c1e1d24c9e72e2eafc;hp=a0ecca16703749cd47ef6dbd81c03437e2868a33;hb=24222363faec9b4e3d7074af2df5f39933613c7f;hpb=59acfe7ae6e8c81462dce00da5006166efb63d22

diff --git a/pctb/convert.c b/pctb/convert.c
index a0ecca1..c8082e6 100644
--- a/pctb/convert.c
+++ b/pctb/convert.c
@@ -1,12 +1,5 @@
-#include <pam.h>
-#include <stdint.h>
-#include <inttypes.h>
-#include <assert.h>
-#include <string.h>
-#include <stdlib.h>
 
-#define eassert assert
-#define debug stdout
+#include "ocr.h"
 
 typedef struct {
   unsigned long rgb; /* on screen */
@@ -16,7 +9,7 @@ typedef struct {
 static int height, width;
 static char *image;
 
-static void debug_flush(void) {
+void debug_flush(void) {
   eassert(!fflush(debug));
   eassert(!ferror(debug));
 }
@@ -242,88 +235,9 @@ static void load_image_and_canonify(void) {
   debug_flush();
 }
 
-typedef uint32_t Pixcol;
-#define PSPIXCOL(priscan) priscan##32
-
-typedef struct {
-  Pixcol col;
-  struct OCRDatabaseNode *then;
-} OCRDatabaseLink;
-
-#define MAXGLYPHCHRS 3
-
-typedef struct OCRDatabaseNode {
-  char s[MAXGLYPHCHRS+1]; /* null-terminated; "" means no match here */
-  int nlinks, alinks;
-  OCRDatabaseLink *links;
-} OCRDatabaseNode;
-
-#define N_OCR_CONTEXTS 2
-static OCRDatabaseNode ocr_contexts[N_OCR_CONTEXTS];
-
-static void load_ocr_database(void) {
-  int ctx,nchrs;
-  OCRDatabaseNode *current, *additional;
-  char chrs[MAXGLYPHCHRS+1];
-  Pixcol cv;
-  int r,i,j;
-
-  FILE *db= fopen("database","r");  eassert(db);
-
-  for (;;) {
-    r= fscanf(db, "%d %d", &ctx, &nchrs);
-    if (r==EOF) break;
-    eassert(r==2);
-    eassert(ctx>=0 && ctx<N_OCR_CONTEXTS);
-    eassert(nchrs>0 && nchrs<=MAXGLYPHCHRS);
-
-    for (i=0; i<nchrs; i++) {
-      int c;
-      r= fscanf(db, "%x", &c);  eassert(r==1);
-      eassert(c>0 && c<=255);
-      chrs[i]= c;
-    }
-    chrs[nchrs]= 0;
-
-    int twidth;
-    r= fscanf(db, "%d", &twidth);  eassert(r==1);
-    current= &ocr_contexts[ctx];
-    for (i=0; i<twidth; i++) {
-      r= fscanf(db, "%"PSPIXCOL(SCNx), &cv);  eassert(r==1);
-      for (j=0; j<current->nlinks; j++)
-	if (current->links[j].col == cv) {
-	  current= current->links[j].then;
-	  goto found_link;
-	}
-
-      additional= malloc(sizeof(*additional)); eassert(additional);
-      additional->s[0]= 0;
-      additional->nlinks= additional->alinks= 0;
-      additional->links= 0;
-      if (current->nlinks==current->alinks) {
-	current->alinks++;
-	current->alinks<<=1;
-	current->links= realloc(current->links,
-            sizeof(*current->links) * current->alinks);
-	eassert(current->links);
-      }
-      current->links[current->nlinks].col= cv;
-      current->links[current->nlinks].then= additional;
-      current->nlinks++;
-      current= additional;
-
-    found_link:;
-    }
-
-    eassert(!current->s[0]);
-    strcpy(current->s, chrs);
-  }
-  eassert(!ferror(db));
-  eassert(feof(db));
-  fclose(db);
-}      
-
 static void ocr_rectangle(Rect r) {
+  OcrResultGlyph *results, *res;
+
   int w= r.br.x - r.tl.x + 1;
   int h= r.br.y - r.tl.y + 1;
   Pixcol cols[w+1];
@@ -341,56 +255,20 @@ static void ocr_rectangle(Rect r) {
   }
   cols[w]= 0;
 
-  int nspaces=0;
-  int ctx=1,i;
-  x=0;
-
-  for (;;) {
-    if (x>w) break;
-
-    if (!cols[x]) {
-      nspaces++;
-      x++;
-      if (nspaces>3) ctx=1;
-      continue;
-    }
-      
-    OCRDatabaseNode *current=0, *lastmatch=0;
-    int startx=x;
-    int afterlastmatchx=-1;
-    current= &ocr_contexts[ctx];
-    for (;;) {
-      if (x>w) break;
-      Pixcol cv= cols[x];
-      for (i=0; i<current->nlinks; i++)
-	if (current->links[i].col == cv)
-	  goto found;
-      /* not found */
-      break;
-    found:
-      x++;
-      current= current->links[i].then;
-      if (current->s[0]) { lastmatch=current; afterlastmatchx=x; }
-    }
-
-    if (!lastmatch) {
-      int x2;
-      for (x2=x+1; x2<w && cols[x2]; x2++);
-      printf("UNKNOWN x=%d ctx=%d %d..%d\n",x, ctx, startx,x2);
-      x++;
-    } else {
-      printf("OUTPUT x=%d `%s'\n", x, lastmatch->s);
-      x= afterlastmatchx;
-      ctx= 0;
-    }
-  }
+  results= ocr(w,h,cols);
+  printf("YES! \"");
+  for (res=0; res->s; res++)
+    printf("%s",res->s);
+  printf("\"\n");
+  eassert(!ferror(stdout));
+  eassert(!fflush(stdout));
 }
 
 int main(void) {
   Rect thisr, entryr;
   int tryrect, colno;
 
-  load_ocr_database();
+  ocr_init();
   load_image_and_canonify();
   find_structure();