[gimp] plug-ins: be a little more forgiving loading g3 fax images.

[Jacob Boerema <jboerema src gnome org>]

commit fd2aa645afa409f8e3cebf460e7a75bdb0e7c645
Author: Jacob Boerema <jgboerema gmail com>
Date:   Fri Mar 5 14:11:42 2021 -0500

    plug-ins: be a little more forgiving loading g3 fax images.
    
    Only count a broken line once and only stop after at
    least 10 consecutive broken lines since older fax
    images are known for having bad lines.
    
    This enables loading the image in issues #475.

 plug-ins/file-faxg3/faxg3.c | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)
---
diff --git a/plug-ins/file-faxg3/faxg3.c b/plug-ins/file-faxg3/faxg3.c
index 101561d759..a44a3ca117 100644
--- a/plug-ins/file-faxg3/faxg3.c
+++ b/plug-ins/file-faxg3/faxg3.c
@@ -227,6 +227,7 @@ load_image (GFile   *file,
   int             color;
   int             i, rr, rsize;
   int             cons_eol;
+  int             last_eol_row;
 
   GimpImage      *image   = NULL;
   gint            bperrow = MAX_COLS/8;  /* bytes per bit row */
@@ -263,6 +264,7 @@ load_image (GFile   *file,
   data = 0;
 
   cons_eol = 0; /* consecutive EOLs read - zero yet */
+  last_eol_row = 0;
 
   color = 0; /* start with white */
   rr = 0;
@@ -298,7 +300,7 @@ load_image (GFile   *file,
 
   bp = &bitmap[row * MAX_COLS / 8];
 
-  while (rs > 0 && cons_eol < 4)        /* i.e., while (!EOF) */
+  while (rs > 0 && cons_eol < 10)        /* i.e., while (!EOF) */
     {
 #ifdef DEBUG
       g_printerr ("hibit=%2d, data=", hibit);
@@ -440,7 +442,11 @@ load_image (GFile   *file,
 
           if (col == 0)
             {
-              cons_eol++; /* consecutive EOLs */
+              if (last_eol_row != row)
+                {
+                  cons_eol++; /* consecutive EOLs */
+                  last_eol_row = row;
+                }
             }
           else
             {