| #ifndef lint |
| static char rcsid[] = "$Header: /cvs/bao-parsec/ext/splash2/apps/volrend/src/libtiff/tif_aux.c,v 1.1.1.1 2012/03/29 17:22:40 uid42307 Exp $"; |
| #endif |
| |
| /* |
| * Copyright (c) 1991, 1992 Sam Leffler |
| * Copyright (c) 1991, 1992 Silicon Graphics, Inc. |
| * |
| * Permission to use, copy, modify, distribute, and sell this software and |
| * its documentation for any purpose is hereby granted without fee, provided |
| * that (i) the above copyright notices and this permission notice appear in |
| * all copies of the software and related documentation, and (ii) the names of |
| * Sam Leffler and Silicon Graphics may not be used in any advertising or |
| * publicity relating to the software without the specific, prior written |
| * permission of Sam Leffler and Silicon Graphics. |
| * |
| * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND, |
| * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY |
| * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. |
| * |
| * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR |
| * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND, |
| * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, |
| * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF |
| * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE |
| * OF THIS SOFTWARE. |
| */ |
| |
| /* |
| * TIFF Library. |
| * |
| * Auxiliary Support Routines. |
| */ |
| #include "tiffioP.h" |
| #include "prototypes.h" |
| |
| /* |
| * Like TIFFGetField, but return any default |
| * value if the tag is not present in the directory. |
| * |
| * NB: We use the value in the directory, rather than |
| * explcit values so that defaults exist only one |
| * place in the library -- in TIFFDefaultDirectory. |
| */ |
| TIFFVGetFieldDefaulted(tif, tag, ap) |
| TIFF *tif; |
| int tag; |
| va_list ap; |
| { |
| TIFFDirectory *td = &tif->tif_dir; |
| int i; |
| |
| if (TIFFVGetField(tif, tag, ap)) |
| return (1); |
| switch (tag) { |
| case TIFFTAG_SUBFILETYPE: |
| *va_arg(ap, u_short *) = td->td_subfiletype; |
| return (1); |
| case TIFFTAG_BITSPERSAMPLE: |
| *va_arg(ap, u_short *) = td->td_bitspersample; |
| return (1); |
| case TIFFTAG_THRESHHOLDING: |
| *va_arg(ap, u_short *) = td->td_threshholding; |
| return (1); |
| case TIFFTAG_FILLORDER: |
| *va_arg(ap, u_short *) = td->td_fillorder; |
| return (1); |
| case TIFFTAG_ORIENTATION: |
| *va_arg(ap, u_short *) = td->td_orientation; |
| return (1); |
| case TIFFTAG_SAMPLESPERPIXEL: |
| *va_arg(ap, u_short *) = td->td_samplesperpixel; |
| return (1); |
| case TIFFTAG_ROWSPERSTRIP: |
| *va_arg(ap, u_long *) = td->td_rowsperstrip; |
| return (1); |
| case TIFFTAG_MINSAMPLEVALUE: |
| *va_arg(ap, u_short *) = td->td_minsamplevalue; |
| return (1); |
| case TIFFTAG_MAXSAMPLEVALUE: |
| *va_arg(ap, u_short *) = td->td_maxsamplevalue; |
| return (1); |
| case TIFFTAG_PLANARCONFIG: |
| *va_arg(ap, u_short *) = td->td_planarconfig; |
| return (1); |
| case TIFFTAG_GROUP4OPTIONS: |
| *va_arg(ap, u_long *) = td->td_group4options; |
| return (1); |
| case TIFFTAG_RESOLUTIONUNIT: |
| *va_arg(ap, u_short *) = td->td_resolutionunit; |
| return (1); |
| case TIFFTAG_PREDICTOR: |
| *va_arg(ap, u_short *) = td->td_predictor; |
| return (1); |
| #ifdef CMYK_SUPPORT |
| case TIFFTAG_DOTRANGE: |
| *va_arg(ap, u_short *) = 0; |
| *va_arg(ap, u_short *) = (1<<td->td_bitspersample)-1; |
| return (1); |
| case TIFFTAG_INKSET: |
| *va_arg(ap, u_short *) = td->td_inkset; |
| return (1); |
| #endif |
| case TIFFTAG_TILEDEPTH: |
| *va_arg(ap, u_long *) = td->td_tiledepth; |
| return (1); |
| case TIFFTAG_DATATYPE: |
| *va_arg(ap, u_short *) = td->td_sampleformat-1; |
| return (1); |
| case TIFFTAG_IMAGEDEPTH: |
| *va_arg(ap, u_short *) = td->td_imagedepth; |
| return (1); |
| #ifdef YCBCR_SUPPORT |
| case TIFFTAG_YCBCRCOEFFICIENTS: |
| if (!td->td_ycbcrcoeffs) { |
| td->td_ycbcrcoeffs = (float *)malloc(3*sizeof (float)); |
| /* defaults are from CCIR Recommendation 601-1 */ |
| td->td_ycbcrcoeffs[0] = .299; |
| td->td_ycbcrcoeffs[1] = .587; |
| td->td_ycbcrcoeffs[2] = .114; |
| } |
| *va_arg(ap, float **) = td->td_ycbcrcoeffs; |
| return (1); |
| case TIFFTAG_YCBCRSUBSAMPLING: |
| *va_arg(ap, u_short *) = td->td_ycbcrsubsampling[0]; |
| *va_arg(ap, u_short *) = td->td_ycbcrsubsampling[1]; |
| return (1); |
| case TIFFTAG_YCBCRPOSITIONING: |
| *va_arg(ap, u_short *) = td->td_ycbcrpositioning; |
| return (1); |
| #endif |
| #ifdef COLORIMETRY_SUPPORT |
| case TIFFTAG_TRANSFERFUNCTION: |
| if (!td->td_transferfunction[0]) { |
| u_short **tf = td->td_transferfunction; |
| int n = 1<<td->td_bitspersample; |
| |
| tf[0] = (u_short *)malloc(n * sizeof (u_short)); |
| tf[0][0] = 0; |
| for (i = 1; i < n; i++) |
| tf[0][i] = (u_short) |
| floor(65535.*pow(i/(n-1.), 2.2) + .5); |
| for (i = 1; i < td->td_samplesperpixel; i++) { |
| tf[i] = (u_short *)malloc(n * sizeof (u_short)); |
| bcopy(tf[0], tf[i], n * sizeof (u_short)); |
| } |
| } |
| for (i = 0; i < td->td_samplesperpixel; i++) |
| *va_arg(ap, u_short **) = td->td_transferfunction[i]; |
| return (1); |
| case TIFFTAG_REFERENCEBLACKWHITE: |
| if (!td->td_refblackwhite) { |
| td->td_refblackwhite = (float *) |
| malloc(2*td->td_samplesperpixel * sizeof (float)); |
| for (i = 0; i < td->td_samplesperpixel; i++) { |
| td->td_refblackwhite[2*i+0] = 0; |
| td->td_refblackwhite[2*i+1] = 1L<<td->td_bitspersample; |
| } |
| } |
| *va_arg(ap, float **) = td->td_refblackwhite; |
| return (1); |
| #endif |
| } |
| return (0); |
| } |
| |
| /* |
| * Like TIFFGetField, but return any default |
| * value if the tag is not present in the directory. |
| */ |
| /*VARARGS2*/ |
| DECLARE2V(TIFFGetFieldDefaulted, TIFF*, tif, int, tag) |
| { |
| int ok; |
| va_list ap; |
| |
| VA_START(ap, tag); |
| ok = TIFFVGetFieldDefaulted(tif, tag, ap); |
| va_end(ap); |
| return (ok); |
| } |