exports.h

/**  © 2014, Brandon T. All Rights Reserved.
  *
  *  This file is part of the LibTesseract Library.
  *  LibTesseract is free software: you can redistribute it and/or modify
  *  it under the terms of the GNU General Public License as published by
  *  the Free Software Foundation, either version 3 of the License, or
  *  (at your option) any later version.
  *
  *  LibTesseract is distributed in the hope that it will be useful,
  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  *  GNU General Public License for more details.
  *
  *  You should have received a copy of the GNU General Public License
  *  along with LibTesseract.  If not, see <http://www.gnu.org/licenses/>.
  */

#ifndef EXPORTS_INCLUDED
#define EXPORTS_INCLUDED

#if defined(_WIN32) || defined(_WIN64)
#include <windows.h>
#endif

#include <tesseract/baseapi.h>
#include <tesseract/capi.h>

#if defined(_WIN32) || defined(_WIN64)
#define EXPORT __declspec(dllexport)
extern HMODULE module;
#else
#include <dlfcn.h>
#define EXPORT [[gnu::visibility("default")]]
#endif

static const char* PascalExports[] =
{
	(char*)"Tesseract_Create",            (char*)"function Tesseract_Create: Pointer;",
	(char*)"Tesseract_Delete",            (char*)"procedure Tesseract_Delete(var Tess: Pointer);",
	(char*)"Tesseract_Init",              (char*)"function Tesseract_Init(Tess: Pointer; DataPath, Language: PTessChar): Int32;",
	(char*)"Tesseract_End",               (char*)"procedure Tesseract_End(var Tess: Pointer);",
	(char*)"Tesseract_SetPageSegMode",    (char*)"procedure Tesseract_SetPageSegMode(Tess: Pointer; Mode: Int32);",
	(char*)"Tesseract_GetPageSegMode",    (char*)"function Tesseract_GetPageSegMode(Tess: Pointer): Int32;",
	(char*)"Tesseract_MeanTextConf",      (char*)"function Tesseract_MeanTextConf(Tess: Pointer): Single;",
	(char*)"Tesseract_SetImage",          (char*)"procedure Tesseract_SetImage(Tess: Pointer; ImageData: Pointer; Width, Height, BytesPerPixel, BytesPerLine: Int32);",
	(char*)"Tesseract_GetUTF8Text",       (char*)"function Tesseract_GetUTF8Text(Tess: Pointer; var Len: Int32): PTessChar;",
	(char*)"Tesseract_FreeUTF8Text",      (char*)"procedure Tesseract_FreeUTF8Text(var Text: PTessChar);",
	(char*)"Tesseract_SetVariable",       (char*)"function Tesseract_SetVariable(Tess: Pointer; Name, Value: PTessChar): Boolean;",
	(char*)"Tesseract_Clear",             (char*)"procedure Tesseract_Clear(Tess: Pointer);",
	(char*)"Tesseract_GetBlockCount",     (char*)"function Tesseract_GetBlockCount(Tess: Pointer): Int32;",
	(char*)"Tesseract_GetLineCount",      (char*)"function Tesseract_GetLineCount(Tess: Pointer): Int32;",
	(char*)"Tesseract_GetWordCount",      (char*)"function Tesseract_GetWordCount(Tess: Pointer): Int32;",
	(char*)"Tesseract_GetCharacterCount", (char*)"function Tesseract_GetCharacterCount(Tess: Pointer): Int32;",
	(char*)"Tesseract_GetBlockMatch",     (char*)"procedure Tesseract_GetBlockMatch(Tess: Pointer; Index: Int32; var Text: PTessChar; var Len: Int32; var Confidence: Single; var X1, Y1, X2, Y2: Int32);",
	(char*)"Tesseract_GetLineMatch",      (char*)"procedure Tesseract_GetLineMatch(Tess: Pointer; Index: Int32; var Text: PTessChar; var Len: Int32; var Confidence: Single; var X1, Y1, X2, Y2: Int32);",
	(char*)"Tesseract_GetWordMatch",      (char*)"procedure Tesseract_GetWordMatch(Tess: Pointer; Index: Int32; var Text: PTessChar; var Len: Int32; var Confidence: Single; var X1, Y1, X2, Y2: Int32);",
	(char*)"Tesseract_GetCharacterMatch", (char*)"procedure Tesseract_GetCharacterMatch(Tess: Pointer; Index: Int32; var Text: PTessChar; var Len: Int32; var Confidence: Single; var X1, Y1, X2, Y2: Int32);",
};   

static const char* PascalTypes[] =
{
	(char*)"PTessChar", (char*)"^Char;",
};

static const long int PascalExportCount = sizeof(PascalExports) / (sizeof(PascalExports[0]) * 2);
static const long int PascalTypeCount = sizeof(PascalTypes) / (sizeof(PascalTypes[0]) * 2);

extern "C"
{
	EXPORT tesseract::TessBaseAPI* Tesseract_Create();
	EXPORT void Tesseract_Delete(tesseract::TessBaseAPI* &tesseract_ptr);
	EXPORT int Tesseract_Init(tesseract::TessBaseAPI* tesseract_ptr, const char* datapath, const char* language);
	EXPORT void Tesseract_End(tesseract::TessBaseAPI* &tesseract_ptr);
	EXPORT void Tesseract_SetPageSegMode(tesseract::TessBaseAPI* tesseract_ptr, int mode);
	EXPORT int Tesseract_GetPageSegMode(tesseract::TessBaseAPI* tesseract_ptr);
	EXPORT float Tesseract_MeanTextConf(tesseract::TessBaseAPI* tesseract_ptr);
	EXPORT void Tesseract_SetImage(tesseract::TessBaseAPI* tesseract_ptr, const unsigned char* imagedata, int width, int height, int bytes_per_pixel, int bytes_per_line);
	EXPORT const char* Tesseract_GetUTF8Text(tesseract::TessBaseAPI* tesseract_ptr, int* len);
	EXPORT void Tesseract_FreeUTF8Text(char* &utf8_text_ptr);
	EXPORT bool Tesseract_SetVariable(tesseract::TessBaseAPI* tesseract_ptr, const char* name, const char* value);
	EXPORT void Tesseract_Clear(tesseract::TessBaseAPI* tesseract_ptr);
	EXPORT int Tesseract_GetBlockCount(tesseract::TessBaseAPI* tesseract_ptr);
	EXPORT int Tesseract_GetLineCount(tesseract::TessBaseAPI* tesseract_ptr); 
	EXPORT int Tesseract_GetWordCount(tesseract::TessBaseAPI* tesseract_ptr); 
	EXPORT int Tesseract_GetCharacterCount(tesseract::TessBaseAPI* tesseract_ptr); 
	EXPORT void Tesseract_GetBlockMatch(tesseract::TessBaseAPI* tesseract_ptr, int index, char* &text, int* len, float* confidence, int* x1, int* y1, int* x2, int* y2); 
	EXPORT void Tesseract_GetLineMatch(tesseract::TessBaseAPI* tesseract_ptr, int index, char* &text, int* len, float* confidence, int* x1, int* y1, int* x2, int* y2); 
	EXPORT void Tesseract_GetWordMatch(tesseract::TessBaseAPI* tesseract_ptr, int index, char* &text, int* len, float* confidence, int* x1, int* y1, int* x2, int* y2); 
	EXPORT void Tesseract_GetCharacterMatch(tesseract::TessBaseAPI* tesseract_ptr, int index, char* &text, int* len, float* confidence, int* x1, int* y1, int* x2, int* y2);

	EXPORT int GetPluginABIVersion();
	EXPORT int GetFunctionCount();
	EXPORT int GetTypeCount();
	EXPORT int GetFunctionInfo(int Index, void** Address, char** Definition);
	EXPORT int GetTypeInfo(int Index, char** Type, char** Definition);
}

#endif // EXPORTS_INCLUDED