三维重建软件etdips-src

/* $Header: /usr/people/rmullick/cvs/tdips/tiff/src/tif_getimage.c,v 1.1 2000/04/11 18:00:18 rmullick Exp $ */ /* * Copyright (c) 1991-1997 Sam Leffler * Copyright (c) 1991-1997 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 * * Read and return a packed RGBA image. */ #include "tiffiop.h" #include <assert.h> #include <stdio.h> static int gtTileContig(TIFFRGBAImage*, uint32*, uint32, uint32); static int gtTileSeparate(TIFFRGBAImage*, uint32*, uint32, uint32); static int gtStripContig(TIFFRGBAImage*, uint32*, uint32, uint32); static int gtStripSeparate(TIFFRGBAImage*, uint32*, uint32, uint32); static int pickTileContigCase(TIFFRGBAImage*); static int pickTileSeparateCase(TIFFRGBAImage*); static const char photoTag[] = "PhotometricInterpretation"; /* * Check the image to see if TIFFReadRGBAImage can deal with it. * 1/0 is returned according to whether or not the image can * be handled. If 0 is returned, emsg contains the reason * why it is being rejected. */ int TIFFRGBAImageOK(TIFF* tif, char emsg[1024]) { TIFFDirectory* td = &tif->tif_dir; uint16 photometric; int colorchannels; switch (td->td_bitspersample) { case 1: case 2: case 4: case 8: case 16: break; default: sprintf(emsg, "Sorry, can not handle images with %d-bit samples", td->td_bitspersample); return (0); } colorchannels = td->td_samplesperpixel - td->td_extrasamples; if (!TIFFGetField(tif, TIFFTAG_PHOTOMETRIC, &photometric)) { switch (colorchannels) { case 1: photometric = PHOTOMETRIC_MINISBLACK; break; case 3: photometric = PHOTOMETRIC_RGB; break; default: sprintf(emsg, "Missing needed %s tag", photoTag); return (0); } } switch (photometric) { case PHOTOMETRIC_MINISWHITE: case PHOTOMETRIC_MINISBLACK: case PHOTOMETRIC_PALETTE: if (td->td_planarconfig == PLANARCONFIG_CONTIG && td->td_samplesperpixel != 1) { sprintf(emsg, "Sorry, can not handle contiguous data with %s=%d, and %s=%d", photoTag, photometric, "Samples/pixel", td->td_samplesperpixel); return (0); } break; case PHOTOMETRIC_YCBCR: if (td->td_planarconfig != PLANARCONFIG_CONTIG) { sprintf(emsg, "Sorry, can not handle YCbCr images with %s=%d", "Planarconfiguration", td->td_planarconfig); return (0); } break; case PHOTOMETRIC_RGB: if (colorchannels < 3) { sprintf(emsg, "Sorry, can not handle RGB image with %s=%d", "Color channels", colorchannels); return (0); } break; #ifdef CMYK_SUPPORT case PHOTOMETRIC_SEPARATED: if (td->td_inkset != INKSET_CMYK) { sprintf(emsg, "Sorry, can not handle separated image with %s=%d", "InkSet", td->td_inkset); return (0); } if (td->td_samplesperpixel != 4) { sprintf(emsg, "Sorry, can not handle separated image with %s=%d", "Samples/pixel", td->td_samplesperpixel); return (0); } break; #endif case PHOTOMETRIC_LOGL: if (td->td_compression != COMPRESSION_SGILOG) { sprintf(emsg, "Sorry, LogL data must have %s=%d", "Compression", COMPRESSION_SGILOG); return (0); } break; case PHOTOMETRIC_LOGLUV: if (td->td_compression != COMPRESSION_SGILOG && td->td_compression != COMPRESSION_SGILOG24) { sprintf(emsg, "Sorry, LogLuv data must have %s=%d or %d", "Compression", COMPRESSION_SGILOG, COMPRESSION_SGILOG24); return (0); } if (td->td_planarconfig != PLANARCONFIG_CONTIG) { sprintf(emsg, "Sorry, can not handle LogLuv images with %s=%d", "Planarconfiguration", td->td_planarconfig); return (0); } break; default: sprintf(emsg, "Sorry, can not handle image with %s=%d", photoTag, photometric); return (0); } return (1); } void TIFFRGBAImageEnd(TIFFRGBAImage* img) { if (img->Map) _TIFFfree(img->Map), img->Map = NULL; if (img->BWmap) _TIFFfree(img->BWmap), img->BWmap = NULL; if (img->PALmap) _TIFFfree(img->PALmap), img->PALmap = NULL; if (img->ycbcr) _TIFFfree(img->ycbcr), img->ycbcr = NULL; if( img->redcmap ) { _TIFFfree( img->redcmap ); _TIFFfree( img->greencmap ); _TIFFfree( img->bluecmap ); } } static int isCCITTCompression(TIFF* tif) { uint16 compress; TIFFGetField(tif, TIFFTAG_COMPRESSION, &compress); return (compress == COMPRESSION_CCITTFAX3 || compress == COMPRESSION_CCITTFAX4 || compress == COMPRESSION_CCITTRLE || compress == COMPRESSION_CCITTRLEW); } int TIFFRGBAImageBegin(TIFFRGBAImage* img, TIFF* tif, int stop, char emsg[1024]) { uint16* sampleinfo; uint16 extrasamples; uint16 planarconfig; uint16 compress; int colorchannels; uint16 *red_orig, *green_orig, *blue_orig; int n_color; /* Initialize to normal values */ img->row_offset = 0; img->col_offset = 0; img->redcmap = NULL; img->greencmap = NULL; img->bluecmap = NULL; img->tif = tif; img->stoponerr = stop; TIFFGetFieldDefaulted(tif, TIFFTAG_BITSPERSAMPLE, &img->bitspersample); switch (img->bitspersample) { case 1: case 2: case 4: case 8: case 16: break; default: sprintf(emsg, "Sorry, can not image with %d-bit samples", img->bitspersample); return (0); } img->alpha = 0; TIFFGetFieldDefaulted(tif, TIFFTAG_SAMPLESPERPIXEL, &img->samplesperpixel); TIFFGetFieldDefaulted(tif, TIFFTAG_EXTRASAMPLES, &extrasamples, &sampleinfo); if (extrasamples == 1) switch (sampleinfo[0]) { case EXTRASAMPLE_ASSOCALPHA: /* data is pre-multiplied */ case EXTRASAMPLE_UNASSALPHA: /* data is not pre-multiplied */ img->alpha = sampleinfo[0]; break; } colorchannels = img->samplesperpixel - extrasamples; TIFFGetFieldDefaulted(tif, TIFFTAG_COMPRESSION, &compress); TIFFGetFieldDefaulted(tif, TIFFTAG_PLANARCONFIG, &planarconfig); if (!TIFFGetField(tif, TIFFTAG_PHOTOMETRIC, &img->photometric)) { switch (colorchannels) { case 1: if (isCCITTCompression(tif)) img->photometric = PHOTOMETRIC_MINISWHITE; else img->photometric = PHOTOMETRIC_MINISBLACK; break; case 3: img->photometric = PHOTOMETRIC_RGB; break; default: sprintf(emsg, "Missing needed %s tag", photoTag); return (0); } } switch (img->photometric) { case PHOTOMETRIC_PALETTE: if (!TIFFGetField(tif, TIFFTAG_COLORMAP, &red_orig, &green_orig, &blue_orig)) { TIFFError(TIFFFileName(tif), "Missing required \"Colormap\" tag"); return (0); } /* copy the colormaps so we can modify them */ n_color = (1L << img->bitspersample); img->redcmap = (uint16 *) _TIFFmalloc(sizeof(uint16)*n_color); img->greencmap = (u