134 lines
4.7 KiB
C
134 lines
4.7 KiB
C
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//$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
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//
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// Copyright (c) 2001 Microsoft Corporation. All rights reserved.
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//
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// Module:
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// volcano/dll/CharRec.h
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//
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// Description:
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// Header for main sequencing of character shape recognizer.
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//
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// Author:
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// hrowley
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//
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//$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
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#pragma once
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// const defintions
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#define SYM_UNKNOWN ((SYM)0xFFFF)
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// unicode value for space
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#define SYM_SPACE 0x0020
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// stroke ID corresponding to a space character
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#define SPACE_ALT_ID -2
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// ratio of avg char hgt above which a gap is considered a space
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#define SPACE_RATIO 0.75
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////
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//// Data structures
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////
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// Settings used to configure recognizer as it is being run.
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typedef struct tagRECOG_SETTINGS {
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ALC alcValid; // Characters to recognize.
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ALC alcPriority; // Characters to prioritize.
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UINT partialMode; // Which partial mode are we in.
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UINT *pAbort; // Abort address used by partial processing modes.
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BYTE *pbAllowedChars; // Bitmask representing which (folded) dense codes are allowed.
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BYTE *pbPriorityChars;// Bitmask representing which (folded) dense codes are preferred.
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} RECOG_SETTINGS;
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// A single stroke of ink.
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typedef struct tagSTROKE {
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int nInk; // How many points in this stroke
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int iBox; // The box containing this stroke
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int iOrder; // The index of the first real stroke in this (merged) stroke
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int iLast; // The index of the last real stroke in this (merged) stroke
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DWORD timeStart, timeEnd; // Range of time indices in this stroke
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RECT bbox; // Bounding box of stroke
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POINT *pts; // Array of points in the stroke
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} STROKE;
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// An alternate returned from the shape recognizer.
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typedef struct tagRECOG_ALT {
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wchar_t wch;
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float prob;
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} RECOG_ALT;
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// Build a copy of the glyph structure.
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GLYPH *CopyGlyph(GLYPH *pOldGlyph);
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////
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//// Functions
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////
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// Load and initialize the databases used.
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#ifdef USE_RESOURCES
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extern BOOL LoadCharRec(HINSTANCE hInstanceDll);
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#else
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extern BOOL LoadCharRec(wchar_t *pPath);
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#endif
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// Unload the databases used.
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extern BOOL UnloadCharRec();
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// Do shape matching.
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extern INT RecognizeChar(
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RECOG_SETTINGS *pRecogSettings,// Setting for recognizers.
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UINT cStrokes, // Number of strokes to process.
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UINT cRealStrokes, // Number of strokes before merging
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STROKE *pStrokes, // Array of strokes to process.
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FLOAT *pProbIsChar, // Out: probability of being valid char.
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UINT maxAlts, // Size of alts array supplied.
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RECOG_ALT *pAlts, // Out: alternate list matched.
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RECT *pGuideBox, // Guide box for this ink.
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int *pCount // Matching space for otter or zilla
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);
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// Do shape matching.
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INT RecognizeCharInsurance(
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RECOG_SETTINGS *pRecogSettings,// Setting for recognizers.
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UINT cStrokes, // Number of strokes to process.
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UINT cRealStrokes, // Number of strokes before merging
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STROKE *pStrokes, // Array of strokes to process.
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FLOAT *pProbIsChar, // Out: probability of being valid char.
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UINT maxAlts, // Size of alts array supplied.
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RECOG_ALT *pProbAlts, // Out: alternate list by probs.
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int *pnProbAlts,
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RECOG_ALT *pScoreAlts, // Out: alternate list by scores
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int *pnScoreAlts,
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RECT *pGuideBox, // Guide box for this ink.
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wchar_t dchContext, // Context (dense code, SYM_UNKNOWN=none)
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int *pCount, // Matching space for otter or zilla
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VOLCANO_WEIGHTS *pTuneScore, // Component scores for score alternates
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BOOL fStringMode, // Whether to use string mode weightings
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BOOL fProbMode, // Whether we are in prob mode
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void *pvCache, // Recognizer cache, or NULL for unused
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int iStroke // Index of last stroke of character
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);
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// Call the core recognizer for the given character. Returned the
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// number of alternates produced, or -1 if an error occurs.
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int CoreRecognizeChar(
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ALT_LIST *pAltList, // Alt list to be returned
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int cAlt, // Max number of alternates
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GLYPH **ppGlyph, // Character to recognize (which may be modified)
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int nRealStrokes, // Real stroke count for abort processing
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RECT *pGuideBox, // Guide box (for partial mode)
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RECOG_SETTINGS *pRecogSettings, // partial mode, other settings
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CHARSET *pCharSet, // ALCs
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int *piRecognizer, // Returns the VOLCANO_CONFIG_* constant for the recognizer used
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int *piSpace); // The space number in that recognizer
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// Initialize the recognizer partially.
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// When iLevel is set to 0, only the locale database, tuning database,
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// otter and zilla (and other core recognizers) are loaded.
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// When iLevel is set to 1, all the above databases are loaded, as well as
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// unigrams and crane/hawk.
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BOOL HwxConfigExPartial(wchar_t *pLocale, wchar_t *pRecogDir, int iLevel);
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