mirror of
https://github.com/tesseract-ocr/tesseract.git
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f4baca27c8
git-svn-id: https://tesseract-ocr.googlecode.com/svn/trunk@81 d0cd1f9f-072b-0410-8dd7-cf729c803f20
144 lines
5.3 KiB
C++
144 lines
5.3 KiB
C++
///////////////////////////////////////////////////////////////////////
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// File: tessdll.h
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// Description: Windows dll interface for Tesseract.
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// Author: Glen Wernersbach
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// Created: Tue May 15 10:30:01 PDT 2007
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//
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// (C) Copyright 2007, Jetsoftdev.
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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// http://www.apache.org/licenses/LICENSE-2.0
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//
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///////////////////////////////////////////////////////////////////////
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#ifndef __cplusplus
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typedef BOOL bool;
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#endif /* __cplusplus */
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#include "ocrclass.h"
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#ifdef TESSDLL_EXPORTS
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#define TESSDLL_API __declspec(dllexport)
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#else
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#define TESSDLL_API __declspec(dllimport)
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#endif
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#ifdef __cplusplus
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#include "baseapi.h"
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//This is an exposed C++
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class TESSDLL_API TessDllAPI : public TessBaseAPI
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{
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public:
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//lang is the code of the language for which the data will be loaded.
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//(Codes follow ISO 639-2.) If it is NULL, english (eng) will be loaded.
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TessDllAPI(const char* lang = NULL) ;
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~TessDllAPI ();
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//xsize should be the width of line in bytes times 8
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//ysize is the height
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//pass through a buffer of bytes for a 1 bit per pixel bitmap
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//BeginPage assumes the first memory address is the bottom of the image
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//BeginPageUpright assumes the first memory address is the top of the image
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int BeginPage(UINT32 xsize,UINT32 ysize,unsigned char *buf);
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int BeginPageUpright(UINT32 xsize,UINT32 ysize,unsigned char *buf);
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// This could probably be combined with about in a one function bpp=1
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int BeginPage(UINT32 xsize,UINT32 ysize,unsigned char *buf,UINT8 bpp);
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int BeginPageUpright(UINT32 xsize,UINT32 ysize,unsigned char *buf, UINT8 bpp);
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void EndPage();
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//This allows you to extract one word or section from the bitmap or
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//the whole page
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//To extract the whole page just enter zeros for left, right, top, bottom
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//Note: getting one word at time is not yet optimized for speed.
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//limit of 32000 character can be returned
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//see ocrclass.h for a decription of the ETEXT_DESC file
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ETEXT_DESC *Recognize_a_Block(UINT32 left,UINT32 right,
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UINT32 top,UINT32 bottom);
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ETEXT_DESC *Recognize_all_Words(void);
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private:
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int ProcessPagePass1();
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PAGE_RES *page_res;
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unsigned char *membuf;
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BLOCK_LIST* block_list;
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};
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#endif
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#ifdef __cplusplus
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extern "C"
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{
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#endif
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//The functions below provide a c wrapper to a global recognize class object
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//xsize should be the width of line in bytes times 8
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//ysize is the height
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//pass through a buffer of bytes for a 1 bit per pixel bitmap
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//BeginPage assumes the first memory address is the bottom of the image (MS DIB format)
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//BeginPageUpright assumes the first memory address is the top of the image (TIFF format)
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//lang is the code of the language for which the data will be loaded.
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//(Codes follow ISO 639-2.) If it is NULL, english (eng) will be loaded.
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TESSDLL_API int __cdecl TessDllBeginPage(UINT32 xsize,UINT32 ysize,
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unsigned char *buf);
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TESSDLL_API int __cdecl TessDllBeginPageLang(UINT32 xsize,UINT32 ysize,
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unsigned char *buf,
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const char* lang);
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TESSDLL_API int __cdecl TessDllBeginPageUpright(UINT32 xsize,UINT32 ysize,
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unsigned char *buf,
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const char* lang);
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//Added in version 2.0 to allow users to specify bytes per pixel to do
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//1 for binary biptmap
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//8 for gray
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//24 bit for color RGB
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TESSDLL_API int __cdecl TessDllBeginPageBPP(UINT32 xsize,UINT32 ysize,
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unsigned char *buf,UINT8 bpp);
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TESSDLL_API int __cdecl TessDllBeginPageLangBPP(UINT32 xsize,UINT32 ysize,
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unsigned char *buf,
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const char* lang,UINT8 bpp);
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TESSDLL_API int __cdecl TessDllBeginPageUprightBPP(UINT32 xsize,UINT32 ysize,
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unsigned char *buf,
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const char* lang,UINT8 bpp);
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TESSDLL_API void __cdecl TessDllEndPage(void);
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//This allows you to extract one word or section from the bitmap or
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//the whole page
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//To extract the whole page just enter zeros for left, right, top, bottom
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//Note: getting one word at time is not yet optimized for speed.
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//limit of 32000 character can be returned
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//see ocrclass.h for a decription of the ETEXT_DESC file
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TESSDLL_API ETEXT_DESC * __cdecl TessDllRecognize_a_Block(UINT32 left,
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UINT32 right,
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UINT32 top,
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UINT32 bottom);
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TESSDLL_API ETEXT_DESC * __cdecl TessDllRecognize_all_Words();
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//This will release any memory associated with the recognize class object
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TESSDLL_API void __cdecl TessDllRelease();
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#ifdef __cplusplus
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}
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#endif
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