libs/tiff/tif_predict.c

37 #define	PredictorState(tif)	((TIFFPredictorState*) (tif)->tif_data)
50 PredictorSetup(TIFF* tif)
52 	TIFFPredictorState* sp = PredictorState(tif);
53 	TIFFDirectory* td = &tif->tif_dir;
58 		TIFFError(tif->tif_name, "\"Predictor\" value %d not supported",
63 		TIFFError(tif->tif_name,
73 	if (isTiled(tif))
74 		sp->rowsize = TIFFTileRowSize(tif);
76 		sp->rowsize = TIFFScanlineSize(tif);
81 PredictorSetupDecode(TIFF* tif)
83 	TIFFPredictorState* sp = PredictorState(tif);
84 	TIFFDirectory* td = &tif->tif_dir;
86 	if (!(*sp->setupdecode)(tif) || !PredictorSetup(tif))
97 		sp->coderow = tif->tif_decoderow;
98 		tif->tif_decoderow = PredictorDecodeRow;
99 		sp->codestrip = tif->tif_decodestrip;
100 		tif->tif_decodestrip = PredictorDecodeTile;
101 		sp->codetile = tif->tif_decodetile;
102 		tif->tif_decodetile = PredictorDecodeTile;
112 		if (tif->tif_flags&TIFF_SWAB) {
115 				tif->tif_postdecode = _TIFFNoPostDecode;
123 PredictorSetupEncode(TIFF* tif)
125 	TIFFPredictorState* sp = PredictorState(tif);
126 	TIFFDirectory* td = &tif->tif_dir;
128 	if (!(*sp->setupencode)(tif) || !PredictorSetup(tif))
139 		sp->coderow = tif->tif_encoderow;
140 		tif->tif_encoderow = PredictorEncodeRow;
141 		sp->codestrip = tif->tif_encodestrip;
142 		tif->tif_encodestrip = PredictorEncodeTile;
143 		sp->codetile = tif->tif_encodetile;
144 		tif->tif_encodetile = PredictorEncodeTile;
160 horAcc8(TIFF* tif, tidata_t cp0, tsize_t cc)
162 	TIFFPredictorState* sp = PredictorState(tif);
203 swabHorAcc16(TIFF* tif, tidata_t cp0, tsize_t cc)
205 	TIFFPredictorState* sp = PredictorState(tif);
221 horAcc16(TIFF* tif, tidata_t cp0, tsize_t cc)
223 	tsize_t stride = PredictorState(tif)->stride;
240 PredictorDecodeRow(TIFF* tif, tidata_t op0, tsize_t occ0, tsample_t s)
242 	TIFFPredictorState *sp = PredictorState(tif);
247 	if ((*sp->coderow)(tif, op0, occ0, s)) {
248 		(*sp->pfunc)(tif, op0, occ0);
262 PredictorDecodeTile(TIFF* tif, tidata_t op0, tsize_t occ0, tsample_t s)
264 	TIFFPredictorState *sp = PredictorState(tif);
268 	if ((*sp->codetile)(tif, op0, occ0, s)) {
273 			(*sp->pfunc)(tif, op0, (tsize_t) rowsize);
283 horDiff8(TIFF* tif, tidata_t cp0, tsize_t cc)
285 	TIFFPredictorState* sp = PredictorState(tif);
328 horDiff16(TIFF* tif, tidata_t cp0, tsize_t cc)
330 	TIFFPredictorState* sp = PredictorState(tif);
346 PredictorEncodeRow(TIFF* tif, tidata_t bp, tsize_t cc, tsample_t s)
348 	TIFFPredictorState *sp = PredictorState(tif);
354 	(*sp->pfunc)(tif, bp, cc);
355 	return ((*sp->coderow)(tif, bp, cc, s));
359 PredictorEncodeTile(TIFF* tif, tidata_t bp0, tsize_t cc0, tsample_t s)
361 	TIFFPredictorState *sp = PredictorState(tif);
371 		(*sp->pfunc)(tif, bp, (tsize_t) rowsize);
375 	return ((*sp->codetile)(tif, bp0, cc0, s));
387 PredictorVSetField(TIFF* tif, ttag_t tag, va_list ap)
389 	TIFFPredictorState *sp = PredictorState(tif);
394 		TIFFSetFieldBit(tif, FIELD_PREDICTOR);
397 		return (*sp->vsetparent)(tif, tag, ap);
399 	tif->tif_flags |= TIFF_DIRTYDIRECT;
404 PredictorVGetField(TIFF* tif, ttag_t tag, va_list ap)
406 	TIFFPredictorState *sp = PredictorState(tif);
413 		return (*sp->vgetparent)(tif, tag, ap);
420 PredictorPrintDir(TIFF* tif, FILE* fd, long flags)
422 	TIFFPredictorState* sp = PredictorState(tif);
425 	if (TIFFFieldSet(tif,FIELD_PREDICTOR)) {
434 		(*sp->printdir)(tif, fd, flags);
439 TIFFPredictorInit(TIFF* tif)
441 	TIFFPredictorState* sp = PredictorState(tif);
447 	_TIFFMergeFieldInfo(tif, predictFieldInfo, N(predictFieldInfo));
448 	sp->vgetparent = tif->tif_vgetfield;
449 	tif->tif_vgetfield = PredictorVGetField;/* hook for predictor tag */
450 	sp->vsetparent = tif->tif_vsetfield;
451 	tif->tif_vsetfield = PredictorVSetField;/* hook for predictor tag */
452 	sp->printdir = tif->tif_printdir;
454 	tif->tif_printdir = PredictorPrintDir;	/* hook for predictor tag */
457 	sp->setupdecode = tif->tif_setupdecode;
458 	tif->tif_setupdecode = PredictorSetupDecode;
459 	sp->setupencode = tif->tif_setupencode;
460 	tif->tif_setupencode = PredictorSetupEncode;