485 lines
20 KiB
C
485 lines
20 KiB
C
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// SPDX-License-Identifier: Apache-2.0
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// File: capi.h
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// Description: C-API TessBaseAPI
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//
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// (C) Copyright 2012, Google Inc.
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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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#ifndef API_CAPI_H_
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#define API_CAPI_H_
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#include "export.h"
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#ifdef __cplusplus
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# include <tesseract/baseapi.h>
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# include <tesseract/ocrclass.h>
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# include <tesseract/pageiterator.h>
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# include <tesseract/renderer.h>
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# include <tesseract/resultiterator.h>
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#endif
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#include <stdbool.h>
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#include <stdio.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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#ifndef BOOL
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# define BOOL int
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# define TRUE 1
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# define FALSE 0
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#endif
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#ifdef __cplusplus
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typedef tesseract::TessResultRenderer TessResultRenderer;
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typedef tesseract::TessBaseAPI TessBaseAPI;
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typedef tesseract::PageIterator TessPageIterator;
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typedef tesseract::ResultIterator TessResultIterator;
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typedef tesseract::MutableIterator TessMutableIterator;
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typedef tesseract::ChoiceIterator TessChoiceIterator;
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typedef tesseract::OcrEngineMode TessOcrEngineMode;
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typedef tesseract::PageSegMode TessPageSegMode;
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typedef tesseract::PageIteratorLevel TessPageIteratorLevel;
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typedef tesseract::Orientation TessOrientation;
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typedef tesseract::ParagraphJustification TessParagraphJustification;
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typedef tesseract::WritingDirection TessWritingDirection;
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typedef tesseract::TextlineOrder TessTextlineOrder;
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typedef tesseract::PolyBlockType TessPolyBlockType;
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typedef tesseract::ETEXT_DESC ETEXT_DESC;
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#else
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typedef struct TessResultRenderer TessResultRenderer;
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typedef struct TessBaseAPI TessBaseAPI;
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typedef struct TessPageIterator TessPageIterator;
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typedef struct TessResultIterator TessResultIterator;
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typedef struct TessMutableIterator TessMutableIterator;
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typedef struct TessChoiceIterator TessChoiceIterator;
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typedef enum TessOcrEngineMode {
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OEM_TESSERACT_ONLY,
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OEM_LSTM_ONLY,
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OEM_TESSERACT_LSTM_COMBINED,
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OEM_DEFAULT
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} TessOcrEngineMode;
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typedef enum TessPageSegMode {
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PSM_OSD_ONLY,
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PSM_AUTO_OSD,
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PSM_AUTO_ONLY,
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PSM_AUTO,
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PSM_SINGLE_COLUMN,
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PSM_SINGLE_BLOCK_VERT_TEXT,
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PSM_SINGLE_BLOCK,
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PSM_SINGLE_LINE,
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PSM_SINGLE_WORD,
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PSM_CIRCLE_WORD,
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PSM_SINGLE_CHAR,
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PSM_SPARSE_TEXT,
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PSM_SPARSE_TEXT_OSD,
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PSM_RAW_LINE,
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PSM_COUNT
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} TessPageSegMode;
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typedef enum TessPageIteratorLevel {
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RIL_BLOCK,
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RIL_PARA,
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RIL_TEXTLINE,
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RIL_WORD,
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RIL_SYMBOL
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} TessPageIteratorLevel;
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typedef enum TessPolyBlockType {
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PT_UNKNOWN,
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PT_FLOWING_TEXT,
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PT_HEADING_TEXT,
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PT_PULLOUT_TEXT,
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PT_EQUATION,
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PT_INLINE_EQUATION,
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PT_TABLE,
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PT_VERTICAL_TEXT,
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PT_CAPTION_TEXT,
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PT_FLOWING_IMAGE,
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PT_HEADING_IMAGE,
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PT_PULLOUT_IMAGE,
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PT_HORZ_LINE,
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PT_VERT_LINE,
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PT_NOISE,
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PT_COUNT
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} TessPolyBlockType;
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typedef enum TessOrientation {
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ORIENTATION_PAGE_UP,
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ORIENTATION_PAGE_RIGHT,
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ORIENTATION_PAGE_DOWN,
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ORIENTATION_PAGE_LEFT
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} TessOrientation;
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typedef enum TessParagraphJustification {
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JUSTIFICATION_UNKNOWN,
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JUSTIFICATION_LEFT,
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JUSTIFICATION_CENTER,
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JUSTIFICATION_RIGHT
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} TessParagraphJustification;
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typedef enum TessWritingDirection {
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WRITING_DIRECTION_LEFT_TO_RIGHT,
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WRITING_DIRECTION_RIGHT_TO_LEFT,
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WRITING_DIRECTION_TOP_TO_BOTTOM
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} TessWritingDirection;
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typedef enum TessTextlineOrder {
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TEXTLINE_ORDER_LEFT_TO_RIGHT,
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TEXTLINE_ORDER_RIGHT_TO_LEFT,
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TEXTLINE_ORDER_TOP_TO_BOTTOM
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} TessTextlineOrder;
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typedef struct ETEXT_DESC ETEXT_DESC;
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#endif
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typedef bool (*TessCancelFunc)(void *cancel_this, int words);
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typedef bool (*TessProgressFunc)(ETEXT_DESC *ths, int left, int right, int top,
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int bottom);
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struct Pix;
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struct Boxa;
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struct Pixa;
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/* General free functions */
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TESS_API const char *TessVersion();
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TESS_API void TessDeleteText(const char *text);
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TESS_API void TessDeleteTextArray(char **arr);
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TESS_API void TessDeleteIntArray(const int *arr);
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/* Renderer API */
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TESS_API TessResultRenderer *TessTextRendererCreate(const char *outputbase);
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TESS_API TessResultRenderer *TessHOcrRendererCreate(const char *outputbase);
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TESS_API TessResultRenderer *TessHOcrRendererCreate2(const char *outputbase,
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BOOL font_info);
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TESS_API TessResultRenderer *TessAltoRendererCreate(const char *outputbase);
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TESS_API TessResultRenderer *TessTsvRendererCreate(const char *outputbase);
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TESS_API TessResultRenderer *TessPDFRendererCreate(const char *outputbase,
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const char *datadir,
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BOOL textonly);
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TESS_API TessResultRenderer *TessUnlvRendererCreate(const char *outputbase);
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TESS_API TessResultRenderer *TessBoxTextRendererCreate(const char *outputbase);
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TESS_API TessResultRenderer *TessLSTMBoxRendererCreate(const char *outputbase);
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TESS_API TessResultRenderer *TessWordStrBoxRendererCreate(
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const char *outputbase);
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TESS_API void TessDeleteResultRenderer(TessResultRenderer *renderer);
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TESS_API void TessResultRendererInsert(TessResultRenderer *renderer,
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TessResultRenderer *next);
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TESS_API TessResultRenderer *TessResultRendererNext(
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TessResultRenderer *renderer);
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TESS_API BOOL TessResultRendererBeginDocument(TessResultRenderer *renderer,
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const char *title);
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TESS_API BOOL TessResultRendererAddImage(TessResultRenderer *renderer,
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TessBaseAPI *api);
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TESS_API BOOL TessResultRendererEndDocument(TessResultRenderer *renderer);
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TESS_API const char *TessResultRendererExtention(TessResultRenderer *renderer);
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TESS_API const char *TessResultRendererTitle(TessResultRenderer *renderer);
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TESS_API int TessResultRendererImageNum(TessResultRenderer *renderer);
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/* Base API */
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TESS_API TessBaseAPI *TessBaseAPICreate();
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TESS_API void TessBaseAPIDelete(TessBaseAPI *handle);
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TESS_API size_t TessBaseAPIGetOpenCLDevice(TessBaseAPI *handle, void **device);
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TESS_API void TessBaseAPISetInputName(TessBaseAPI *handle, const char *name);
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TESS_API const char *TessBaseAPIGetInputName(TessBaseAPI *handle);
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TESS_API void TessBaseAPISetInputImage(TessBaseAPI *handle, struct Pix *pix);
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TESS_API struct Pix *TessBaseAPIGetInputImage(TessBaseAPI *handle);
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TESS_API int TessBaseAPIGetSourceYResolution(TessBaseAPI *handle);
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TESS_API const char *TessBaseAPIGetDatapath(TessBaseAPI *handle);
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TESS_API void TessBaseAPISetOutputName(TessBaseAPI *handle, const char *name);
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TESS_API BOOL TessBaseAPISetVariable(TessBaseAPI *handle, const char *name,
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const char *value);
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TESS_API BOOL TessBaseAPISetDebugVariable(TessBaseAPI *handle, const char *name,
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const char *value);
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TESS_API BOOL TessBaseAPIGetIntVariable(const TessBaseAPI *handle,
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const char *name, int *value);
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TESS_API BOOL TessBaseAPIGetBoolVariable(const TessBaseAPI *handle,
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const char *name, BOOL *value);
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TESS_API BOOL TessBaseAPIGetDoubleVariable(const TessBaseAPI *handle,
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const char *name, double *value);
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TESS_API const char *TessBaseAPIGetStringVariable(const TessBaseAPI *handle,
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const char *name);
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TESS_API void TessBaseAPIPrintVariables(const TessBaseAPI *handle, FILE *fp);
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TESS_API BOOL TessBaseAPIPrintVariablesToFile(const TessBaseAPI *handle,
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const char *filename);
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TESS_API int TessBaseAPIInit1(TessBaseAPI *handle, const char *datapath,
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const char *language, TessOcrEngineMode oem,
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char **configs, int configs_size);
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TESS_API int TessBaseAPIInit2(TessBaseAPI *handle, const char *datapath,
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const char *language, TessOcrEngineMode oem);
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TESS_API int TessBaseAPIInit3(TessBaseAPI *handle, const char *datapath,
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const char *language);
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TESS_API int TessBaseAPIInit4(TessBaseAPI *handle, const char *datapath,
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const char *language, TessOcrEngineMode mode,
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char **configs, int configs_size, char **vars_vec,
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char **vars_values, size_t vars_vec_size,
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BOOL set_only_non_debug_params);
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TESS_API int TessBaseAPIInit5(TessBaseAPI *handle, const char *data, int data_size,
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const char *language, TessOcrEngineMode mode,
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char **configs, int configs_size, char **vars_vec,
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char **vars_values, size_t vars_vec_size,
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BOOL set_only_non_debug_params);
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TESS_API const char *TessBaseAPIGetInitLanguagesAsString(
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const TessBaseAPI *handle);
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TESS_API char **TessBaseAPIGetLoadedLanguagesAsVector(
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const TessBaseAPI *handle);
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TESS_API char **TessBaseAPIGetAvailableLanguagesAsVector(
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const TessBaseAPI *handle);
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TESS_API void TessBaseAPIInitForAnalysePage(TessBaseAPI *handle);
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TESS_API void TessBaseAPIReadConfigFile(TessBaseAPI *handle,
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const char *filename);
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TESS_API void TessBaseAPIReadDebugConfigFile(TessBaseAPI *handle,
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const char *filename);
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TESS_API void TessBaseAPISetPageSegMode(TessBaseAPI *handle,
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TessPageSegMode mode);
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TESS_API TessPageSegMode TessBaseAPIGetPageSegMode(const TessBaseAPI *handle);
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TESS_API char *TessBaseAPIRect(TessBaseAPI *handle,
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const unsigned char *imagedata,
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int bytes_per_pixel, int bytes_per_line,
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int left, int top, int width, int height);
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TESS_API void TessBaseAPIClearAdaptiveClassifier(TessBaseAPI *handle);
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TESS_API void TessBaseAPISetImage(TessBaseAPI *handle,
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const unsigned char *imagedata, int width,
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int height, int bytes_per_pixel,
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int bytes_per_line);
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TESS_API void TessBaseAPISetImage2(TessBaseAPI *handle, struct Pix *pix);
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TESS_API void TessBaseAPISetSourceResolution(TessBaseAPI *handle, int ppi);
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TESS_API void TessBaseAPISetRectangle(TessBaseAPI *handle, int left, int top,
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int width, int height);
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TESS_API struct Pix *TessBaseAPIGetThresholdedImage(TessBaseAPI *handle);
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TESS_API struct Boxa *TessBaseAPIGetRegions(TessBaseAPI *handle,
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struct Pixa **pixa);
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TESS_API struct Boxa *TessBaseAPIGetTextlines(TessBaseAPI *handle,
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struct Pixa **pixa,
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int **blockids);
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TESS_API struct Boxa *TessBaseAPIGetTextlines1(TessBaseAPI *handle,
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BOOL raw_image, int raw_padding,
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struct Pixa **pixa,
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int **blockids, int **paraids);
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TESS_API struct Boxa *TessBaseAPIGetStrips(TessBaseAPI *handle,
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struct Pixa **pixa, int **blockids);
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TESS_API struct Boxa *TessBaseAPIGetWords(TessBaseAPI *handle,
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struct Pixa **pixa);
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TESS_API struct Boxa *TessBaseAPIGetConnectedComponents(TessBaseAPI *handle,
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struct Pixa **cc);
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TESS_API struct Boxa *TessBaseAPIGetComponentImages(TessBaseAPI *handle,
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TessPageIteratorLevel level,
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BOOL text_only,
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struct Pixa **pixa,
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int **blockids);
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TESS_API struct Boxa *TessBaseAPIGetComponentImages1(
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TessBaseAPI *handle, TessPageIteratorLevel level, BOOL text_only,
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BOOL raw_image, int raw_padding, struct Pixa **pixa, int **blockids,
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int **paraids);
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TESS_API int TessBaseAPIGetThresholdedImageScaleFactor(
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const TessBaseAPI *handle);
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TESS_API TessPageIterator *TessBaseAPIAnalyseLayout(TessBaseAPI *handle);
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TESS_API int TessBaseAPIRecognize(TessBaseAPI *handle, ETEXT_DESC *monitor);
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TESS_API BOOL TessBaseAPIProcessPages(TessBaseAPI *handle, const char *filename,
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const char *retry_config,
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int timeout_millisec,
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TessResultRenderer *renderer);
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TESS_API BOOL TessBaseAPIProcessPage(TessBaseAPI *handle, struct Pix *pix,
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int page_index, const char *filename,
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const char *retry_config,
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int timeout_millisec,
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TessResultRenderer *renderer);
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TESS_API TessResultIterator *TessBaseAPIGetIterator(TessBaseAPI *handle);
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TESS_API TessMutableIterator *TessBaseAPIGetMutableIterator(
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TessBaseAPI *handle);
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TESS_API char *TessBaseAPIGetUTF8Text(TessBaseAPI *handle);
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TESS_API char *TessBaseAPIGetHOCRText(TessBaseAPI *handle, int page_number);
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TESS_API char *TessBaseAPIGetAltoText(TessBaseAPI *handle, int page_number);
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TESS_API char *TessBaseAPIGetTsvText(TessBaseAPI *handle, int page_number);
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TESS_API char *TessBaseAPIGetBoxText(TessBaseAPI *handle, int page_number);
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TESS_API char *TessBaseAPIGetLSTMBoxText(TessBaseAPI *handle, int page_number);
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TESS_API char *TessBaseAPIGetWordStrBoxText(TessBaseAPI *handle,
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int page_number);
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TESS_API char *TessBaseAPIGetUNLVText(TessBaseAPI *handle);
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|
TESS_API int TessBaseAPIMeanTextConf(TessBaseAPI *handle);
|
||
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|
|
||
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|
TESS_API int *TessBaseAPIAllWordConfidences(TessBaseAPI *handle);
|
||
|
|
|
||
|
|
#ifndef DISABLED_LEGACY_ENGINE
|
||
|
|
TESS_API BOOL TessBaseAPIAdaptToWordStr(TessBaseAPI *handle,
|
||
|
|
TessPageSegMode mode,
|
||
|
|
const char *wordstr);
|
||
|
|
#endif // #ifndef DISABLED_LEGACY_ENGINE
|
||
|
|
|
||
|
|
TESS_API void TessBaseAPIClear(TessBaseAPI *handle);
|
||
|
|
TESS_API void TessBaseAPIEnd(TessBaseAPI *handle);
|
||
|
|
|
||
|
|
TESS_API int TessBaseAPIIsValidWord(TessBaseAPI *handle, const char *word);
|
||
|
|
TESS_API BOOL TessBaseAPIGetTextDirection(TessBaseAPI *handle, int *out_offset,
|
||
|
|
float *out_slope);
|
||
|
|
|
||
|
|
TESS_API const char *TessBaseAPIGetUnichar(TessBaseAPI *handle, int unichar_id);
|
||
|
|
|
||
|
|
TESS_API void TessBaseAPIClearPersistentCache(TessBaseAPI *handle);
|
||
|
|
|
||
|
|
#ifndef DISABLED_LEGACY_ENGINE
|
||
|
|
|
||
|
|
// Call TessDeleteText(*best_script_name) to free memory allocated by this
|
||
|
|
// function
|
||
|
|
TESS_API BOOL TessBaseAPIDetectOrientationScript(TessBaseAPI *handle,
|
||
|
|
int *orient_deg,
|
||
|
|
float *orient_conf,
|
||
|
|
const char **script_name,
|
||
|
|
float *script_conf);
|
||
|
|
#endif // #ifndef DISABLED_LEGACY_ENGINE
|
||
|
|
|
||
|
|
TESS_API void TessBaseAPISetMinOrientationMargin(TessBaseAPI *handle,
|
||
|
|
double margin);
|
||
|
|
|
||
|
|
TESS_API int TessBaseAPINumDawgs(const TessBaseAPI *handle);
|
||
|
|
|
||
|
|
TESS_API TessOcrEngineMode TessBaseAPIOem(const TessBaseAPI *handle);
|
||
|
|
|
||
|
|
TESS_API void TessBaseGetBlockTextOrientations(TessBaseAPI *handle,
|
||
|
|
int **block_orientation,
|
||
|
|
bool **vertical_writing);
|
||
|
|
|
||
|
|
/* Page iterator */
|
||
|
|
|
||
|
|
TESS_API void TessPageIteratorDelete(TessPageIterator *handle);
|
||
|
|
|
||
|
|
TESS_API TessPageIterator *TessPageIteratorCopy(const TessPageIterator *handle);
|
||
|
|
|
||
|
|
TESS_API void TessPageIteratorBegin(TessPageIterator *handle);
|
||
|
|
|
||
|
|
TESS_API BOOL TessPageIteratorNext(TessPageIterator *handle,
|
||
|
|
TessPageIteratorLevel level);
|
||
|
|
|
||
|
|
TESS_API BOOL TessPageIteratorIsAtBeginningOf(const TessPageIterator *handle,
|
||
|
|
TessPageIteratorLevel level);
|
||
|
|
|
||
|
|
TESS_API BOOL TessPageIteratorIsAtFinalElement(const TessPageIterator *handle,
|
||
|
|
TessPageIteratorLevel level,
|
||
|
|
TessPageIteratorLevel element);
|
||
|
|
|
||
|
|
TESS_API BOOL TessPageIteratorBoundingBox(const TessPageIterator *handle,
|
||
|
|
TessPageIteratorLevel level,
|
||
|
|
int *left, int *top, int *right,
|
||
|
|
int *bottom);
|
||
|
|
|
||
|
|
TESS_API TessPolyBlockType
|
||
|
|
TessPageIteratorBlockType(const TessPageIterator *handle);
|
||
|
|
|
||
|
|
TESS_API struct Pix *TessPageIteratorGetBinaryImage(
|
||
|
|
const TessPageIterator *handle, TessPageIteratorLevel level);
|
||
|
|
|
||
|
|
TESS_API struct Pix *TessPageIteratorGetImage(const TessPageIterator *handle,
|
||
|
|
TessPageIteratorLevel level,
|
||
|
|
int padding,
|
||
|
|
struct Pix *original_image,
|
||
|
|
int *left, int *top);
|
||
|
|
|
||
|
|
TESS_API BOOL TessPageIteratorBaseline(const TessPageIterator *handle,
|
||
|
|
TessPageIteratorLevel level, int *x1,
|
||
|
|
int *y1, int *x2, int *y2);
|
||
|
|
|
||
|
|
TESS_API void TessPageIteratorOrientation(
|
||
|
|
TessPageIterator *handle, TessOrientation *orientation,
|
||
|
|
TessWritingDirection *writing_direction, TessTextlineOrder *textline_order,
|
||
|
|
float *deskew_angle);
|
||
|
|
|
||
|
|
TESS_API void TessPageIteratorParagraphInfo(
|
||
|
|
TessPageIterator *handle, TessParagraphJustification *justification,
|
||
|
|
BOOL *is_list_item, BOOL *is_crown, int *first_line_indent);
|
||
|
|
|
||
|
|
/* Result iterator */
|
||
|
|
|
||
|
|
TESS_API void TessResultIteratorDelete(TessResultIterator *handle);
|
||
|
|
TESS_API TessResultIterator *TessResultIteratorCopy(
|
||
|
|
const TessResultIterator *handle);
|
||
|
|
TESS_API TessPageIterator *TessResultIteratorGetPageIterator(
|
||
|
|
TessResultIterator *handle);
|
||
|
|
TESS_API const TessPageIterator *TessResultIteratorGetPageIteratorConst(
|
||
|
|
const TessResultIterator *handle);
|
||
|
|
TESS_API TessChoiceIterator *TessResultIteratorGetChoiceIterator(
|
||
|
|
const TessResultIterator *handle);
|
||
|
|
|
||
|
|
TESS_API BOOL TessResultIteratorNext(TessResultIterator *handle,
|
||
|
|
TessPageIteratorLevel level);
|
||
|
|
TESS_API char *TessResultIteratorGetUTF8Text(const TessResultIterator *handle,
|
||
|
|
TessPageIteratorLevel level);
|
||
|
|
TESS_API float TessResultIteratorConfidence(const TessResultIterator *handle,
|
||
|
|
TessPageIteratorLevel level);
|
||
|
|
TESS_API const char *TessResultIteratorWordRecognitionLanguage(
|
||
|
|
const TessResultIterator *handle);
|
||
|
|
TESS_API const char *TessResultIteratorWordFontAttributes(
|
||
|
|
const TessResultIterator *handle, BOOL *is_bold, BOOL *is_italic,
|
||
|
|
BOOL *is_underlined, BOOL *is_monospace, BOOL *is_serif, BOOL *is_smallcaps,
|
||
|
|
int *pointsize, int *font_id);
|
||
|
|
|
||
|
|
TESS_API BOOL
|
||
|
|
TessResultIteratorWordIsFromDictionary(const TessResultIterator *handle);
|
||
|
|
TESS_API BOOL TessResultIteratorWordIsNumeric(const TessResultIterator *handle);
|
||
|
|
TESS_API BOOL
|
||
|
|
TessResultIteratorSymbolIsSuperscript(const TessResultIterator *handle);
|
||
|
|
TESS_API BOOL
|
||
|
|
TessResultIteratorSymbolIsSubscript(const TessResultIterator *handle);
|
||
|
|
TESS_API BOOL
|
||
|
|
TessResultIteratorSymbolIsDropcap(const TessResultIterator *handle);
|
||
|
|
|
||
|
|
TESS_API void TessChoiceIteratorDelete(TessChoiceIterator *handle);
|
||
|
|
TESS_API BOOL TessChoiceIteratorNext(TessChoiceIterator *handle);
|
||
|
|
TESS_API const char *TessChoiceIteratorGetUTF8Text(
|
||
|
|
const TessChoiceIterator *handle);
|
||
|
|
TESS_API float TessChoiceIteratorConfidence(const TessChoiceIterator *handle);
|
||
|
|
|
||
|
|
/* Progress monitor */
|
||
|
|
|
||
|
|
TESS_API ETEXT_DESC *TessMonitorCreate();
|
||
|
|
TESS_API void TessMonitorDelete(ETEXT_DESC *monitor);
|
||
|
|
TESS_API void TessMonitorSetCancelFunc(ETEXT_DESC *monitor,
|
||
|
|
TessCancelFunc cancelFunc);
|
||
|
|
TESS_API void TessMonitorSetCancelThis(ETEXT_DESC *monitor, void *cancelThis);
|
||
|
|
TESS_API void *TessMonitorGetCancelThis(ETEXT_DESC *monitor);
|
||
|
|
TESS_API void TessMonitorSetProgressFunc(ETEXT_DESC *monitor,
|
||
|
|
TessProgressFunc progressFunc);
|
||
|
|
TESS_API int TessMonitorGetProgress(ETEXT_DESC *monitor);
|
||
|
|
TESS_API void TessMonitorSetDeadlineMSecs(ETEXT_DESC *monitor, int deadline);
|
||
|
|
|
||
|
|
#ifdef __cplusplus
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#endif // API_CAPI_H_
|