1 /* $Id: tif_predict.h,v 1.9 2016-10-31 17:24:26 erouault Exp $ */ 2 3 /* 4 * Copyright (c) 1995-1997 Sam Leffler 5 * Copyright (c) 1995-1997 Silicon Graphics, Inc. 6 * 7 * Permission to use, copy, modify, distribute, and sell this software and 8 * its documentation for any purpose is hereby granted without fee, provided 9 * that (i) the above copyright notices and this permission notice appear in 10 * all copies of the software and related documentation, and (ii) the names of 11 * Sam Leffler and Silicon Graphics may not be used in any advertising or 12 * publicity relating to the software without the specific, prior written 13 * permission of Sam Leffler and Silicon Graphics. 14 * 15 * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND, 16 * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY 17 * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. 18 * 19 * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR 20 * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND, 21 * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, 22 * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF 23 * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE 24 * OF THIS SOFTWARE. 25 */ 26 27 #ifndef _TIFFPREDICT_ 28 #define _TIFFPREDICT_ 29 /* 30 * ``Library-private'' Support for the Predictor Tag 31 */ 32 33 typedef int (*TIFFEncodeDecodeMethod)(TIFF* tif, uint8* buf, tmsize_t size); 34 35 /* 36 * Codecs that want to support the Predictor tag must place 37 * this structure first in their private state block so that 38 * the predictor code can cast tif_data to find its state. 39 */ 40 typedef struct { 41 int predictor; /* predictor tag value */ 42 tmsize_t stride; /* sample stride over data */ 43 tmsize_t rowsize; /* tile/strip row size */ 44 45 TIFFCodeMethod encoderow; /* parent codec encode/decode row */ 46 TIFFCodeMethod encodestrip; /* parent codec encode/decode strip */ 47 TIFFCodeMethod encodetile; /* parent codec encode/decode tile */ 48 TIFFEncodeDecodeMethod encodepfunc; /* horizontal differencer */ 49 50 TIFFCodeMethod decoderow; /* parent codec encode/decode row */ 51 TIFFCodeMethod decodestrip; /* parent codec encode/decode strip */ 52 TIFFCodeMethod decodetile; /* parent codec encode/decode tile */ 53 TIFFEncodeDecodeMethod decodepfunc; /* horizontal accumulator */ 54 55 TIFFVGetMethod vgetparent; /* super-class method */ 56 TIFFVSetMethod vsetparent; /* super-class method */ 57 TIFFPrintMethod printdir; /* super-class method */ 58 TIFFBoolMethod setupdecode; /* super-class method */ 59 TIFFBoolMethod setupencode; /* super-class method */ 60 } TIFFPredictorState; 61 62 #if defined(__cplusplus) 63 extern "C" { 64 #endif 65 extern int TIFFPredictorInit(TIFF*); 66 extern int TIFFPredictorCleanup(TIFF*); 67 #if defined(__cplusplus) 68 } 69 #endif 70 #endif /* _TIFFPREDICT_ */ 71 72 /* vim: set ts=8 sts=8 sw=8 noet: */ 73 /* 74 * Local Variables: 75 * mode: c 76 * c-basic-offset: 8 77 * fill-column: 78 78 * End: 79 */ 80