1 /* $Header$ */ 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 /* 34 * Codecs that want to support the Predictor tag must place 35 * this structure first in their private state block so that 36 * the predictor code can cast tif_data to find its state. 37 */ 38 typedef struct { 39 int predictor; /* predictor tag value */ 40 int stride; /* sample stride over data */ 41 tsize_t rowsize; /* tile/strip row size */ 42 43 TIFFPostMethod pfunc; /* horizontal differencer/accumulator */ 44 TIFFCodeMethod coderow; /* parent codec encode/decode row */ 45 TIFFCodeMethod codestrip; /* parent codec encode/decode strip */ 46 TIFFCodeMethod codetile; /* parent codec encode/decode tile */ 47 TIFFVGetMethod vgetparent; /* super-class method */ 48 TIFFVSetMethod vsetparent; /* super-class method */ 49 TIFFPrintMethod printdir; /* super-class method */ 50 TIFFBoolMethod setupdecode; /* super-class method */ 51 TIFFBoolMethod setupencode; /* super-class method */ 52 } TIFFPredictorState; 53 54 #if defined(__cplusplus) 55 extern "C" { 56 #endif 57 extern int TIFFPredictorInit(TIFF*); 58 #if defined(__cplusplus) 59 } 60 #endif 61 #endif /* _TIFFPREDICT_ */ 62