Tesseract based OCR devices.

pdfocr8/24/32, ocr and hocr devices.

Use OCRLanguage to set languages to use ("eng" by default).

1 files changed, 45 insertions, 0 deletions

diff --git a/base/tessocr.h b/base/tessocr.h
new file mode 100644
index 000000000..c5e7967b9
--- /dev/null
+++ b/base/tessocr.h
@@ -0,0 +1,45 @@
+/* Copyright (C) 2020 Artifex Software, Inc.
+   All Rights Reserved.
+
+   This software is provided AS-IS with no warranty, either express or
+   implied.
+
+   This software is distributed under license and may not be copied,
+   modified or distributed except as expressly authorized under the terms
+   of the license contained in the file LICENSE in this distribution.
+
+   Refer to licensing information at http://www.artifex.com or contact
+   Artifex Software, Inc.,  1305 Grant Avenue - Suite 200, Novato,
+   CA 94945, U.S.A., +1(415)492-9861, for further information.
+*/
+
+
+/* Simple veneer for tesseract */
+
+#ifndef tessocr_h_INCLUDED
+#  define tessocr_h_INCLUDED
+
+#include "gsmemory.h"
+
+int ocr_image_to_utf8(gs_memory_t *mem,
+                      int w, int h, int bpp, int raster,
+                      int xres, int yres,
+                      void *data, int restore_data,
+                      const char *language, char **out);
+
+int ocr_image_to_hocr(gs_memory_t *mem,
+                      int w, int h, int bpp, int raster,
+                      int xres, int yres, void *data, int restore,
+                      int pagecount, const char *language, char **out);
+
+int ocr_init_api(gs_memory_t *mem, const char *language, void **state);
+
+void ocr_fin_api(gs_memory_t *mem, void *api_);
+
+int ocr_recognise(void *api_, int w, int h, void *data,
+                  int xres, int yres,
+                  int (*callback)(void *, const char *, const int *, const int *, const int *, int),
+                  void *arg);
+
+#endif
+