2594 lines
67 KiB
C
2594 lines
67 KiB
C
/* $Id: tif_getimage.c,v 1.45 2005-01-15 15:44:58 dron Exp $ */
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/*
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* Copyright (c) 1991-1997 Sam Leffler
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* Copyright (c) 1991-1997 Silicon Graphics, Inc.
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*
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* Permission to use, copy, modify, distribute, and sell this software and
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* its documentation for any purpose is hereby granted without fee, provided
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* that (i) the above copyright notices and this permission notice appear in
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* all copies of the software and related documentation, and (ii) the names of
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* Sam Leffler and Silicon Graphics may not be used in any advertising or
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* publicity relating to the software without the specific, prior written
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* permission of Sam Leffler and Silicon Graphics.
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*
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* THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
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* WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
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*
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* IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
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* ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
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* OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
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* WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
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* LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
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* OF THIS SOFTWARE.
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*/
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/*
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* TIFF Library
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*
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* Read and return a packed RGBA image.
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*/
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#include "tiffiop.h"
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#include <stdio.h>
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static int gtTileContig(TIFFRGBAImage*, uint32*, uint32, uint32);
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static int gtTileSeparate(TIFFRGBAImage*, uint32*, uint32, uint32);
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static int gtStripContig(TIFFRGBAImage*, uint32*, uint32, uint32);
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static int gtStripSeparate(TIFFRGBAImage*, uint32*, uint32, uint32);
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static int pickTileContigCase(TIFFRGBAImage*);
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static int pickTileSeparateCase(TIFFRGBAImage*);
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static const char photoTag[] = "PhotometricInterpretation";
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/*
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* Helper constants used in Orientation tag handling
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*/
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#define FLIP_VERTICALLY 0x01
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#define FLIP_HORIZONTALLY 0x02
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/*
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* Color conversion constants. We will define display types here.
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*/
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TIFFDisplay display_sRGB = {
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{ /* XYZ -> luminance matrix */
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{ 3.2410F, -1.5374F, -0.4986F },
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{ -0.9692F, 1.8760F, 0.0416F },
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{ 0.0556F, -0.2040F, 1.0570F }
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},
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100.0F, 100.0F, 100.0F, /* Light o/p for reference white */
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255, 255, 255, /* Pixel values for ref. white */
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1.0F, 1.0F, 1.0F, /* Residual light o/p for black pixel */
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2.4F, 2.4F, 2.4F, /* Gamma values for the three guns */
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};
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/*
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* Check the image to see if TIFFReadRGBAImage can deal with it.
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* 1/0 is returned according to whether or not the image can
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* be handled. If 0 is returned, emsg contains the reason
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* why it is being rejected.
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*/
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int
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TIFFRGBAImageOK(TIFF* tif, char emsg[1024])
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{
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TIFFDirectory* td = &tif->tif_dir;
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uint16 photometric;
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int colorchannels;
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if (!tif->tif_decodestatus) {
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sprintf(emsg, "Sorry, requested compression method is not configured");
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return (0);
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}
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switch (td->td_bitspersample) {
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case 1: case 2: case 4:
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case 8: case 16:
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break;
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default:
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sprintf(emsg, "Sorry, can not handle images with %d-bit samples",
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td->td_bitspersample);
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return (0);
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}
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colorchannels = td->td_samplesperpixel - td->td_extrasamples;
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if (!TIFFGetField(tif, TIFFTAG_PHOTOMETRIC, &photometric)) {
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switch (colorchannels) {
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case 1:
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photometric = PHOTOMETRIC_MINISBLACK;
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break;
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case 3:
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photometric = PHOTOMETRIC_RGB;
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break;
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default:
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sprintf(emsg, "Missing needed %s tag", photoTag);
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return (0);
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}
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}
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switch (photometric) {
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case PHOTOMETRIC_MINISWHITE:
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case PHOTOMETRIC_MINISBLACK:
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case PHOTOMETRIC_PALETTE:
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if (td->td_planarconfig == PLANARCONFIG_CONTIG
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&& td->td_samplesperpixel != 1
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&& td->td_bitspersample < 8 ) {
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sprintf(emsg,
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"Sorry, can not handle contiguous data with %s=%d, "
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"and %s=%d and Bits/Sample=%d",
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photoTag, photometric,
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"Samples/pixel", td->td_samplesperpixel,
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td->td_bitspersample);
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return (0);
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}
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/*
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** We should likely validate that any extra samples are either
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** to be ignored, or are alpha, and if alpha we should try to use
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** them. But for now we won't bother with this.
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*/
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break;
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case PHOTOMETRIC_YCBCR:
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if (td->td_planarconfig != PLANARCONFIG_CONTIG) {
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sprintf(emsg, "Sorry, can not handle YCbCr images with %s=%d",
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"Planarconfiguration", td->td_planarconfig);
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return (0);
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}
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break;
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case PHOTOMETRIC_RGB:
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if (colorchannels < 3) {
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sprintf(emsg, "Sorry, can not handle RGB image with %s=%d",
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"Color channels", colorchannels);
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return (0);
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}
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break;
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case PHOTOMETRIC_SEPARATED:
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if (td->td_inkset != INKSET_CMYK) {
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sprintf(emsg, "Sorry, can not handle separated image with %s=%d",
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"InkSet", td->td_inkset);
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return (0);
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}
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if (td->td_samplesperpixel < 4) {
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sprintf(emsg, "Sorry, can not handle separated image with %s=%d",
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"Samples/pixel", td->td_samplesperpixel);
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return (0);
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}
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break;
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case PHOTOMETRIC_LOGL:
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if (td->td_compression != COMPRESSION_SGILOG) {
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sprintf(emsg, "Sorry, LogL data must have %s=%d",
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"Compression", COMPRESSION_SGILOG);
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return (0);
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}
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break;
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case PHOTOMETRIC_LOGLUV:
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if (td->td_compression != COMPRESSION_SGILOG &&
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td->td_compression != COMPRESSION_SGILOG24) {
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sprintf(emsg, "Sorry, LogLuv data must have %s=%d or %d",
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"Compression", COMPRESSION_SGILOG, COMPRESSION_SGILOG24);
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return (0);
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}
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if (td->td_planarconfig != PLANARCONFIG_CONTIG) {
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sprintf(emsg, "Sorry, can not handle LogLuv images with %s=%d",
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"Planarconfiguration", td->td_planarconfig);
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return (0);
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}
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break;
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case PHOTOMETRIC_CIELAB:
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break;
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default:
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sprintf(emsg, "Sorry, can not handle image with %s=%d",
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photoTag, photometric);
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return (0);
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}
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return (1);
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}
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void
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TIFFRGBAImageEnd(TIFFRGBAImage* img)
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{
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if (img->Map)
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_TIFFfree(img->Map), img->Map = NULL;
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if (img->BWmap)
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_TIFFfree(img->BWmap), img->BWmap = NULL;
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if (img->PALmap)
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_TIFFfree(img->PALmap), img->PALmap = NULL;
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if (img->ycbcr)
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_TIFFfree(img->ycbcr), img->ycbcr = NULL;
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if (img->cielab)
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_TIFFfree(img->cielab), img->cielab = NULL;
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if( img->redcmap ) {
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_TIFFfree( img->redcmap );
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_TIFFfree( img->greencmap );
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_TIFFfree( img->bluecmap );
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}
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}
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static int
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isCCITTCompression(TIFF* tif)
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{
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uint16 compress;
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TIFFGetField(tif, TIFFTAG_COMPRESSION, &compress);
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return (compress == COMPRESSION_CCITTFAX3 ||
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compress == COMPRESSION_CCITTFAX4 ||
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compress == COMPRESSION_CCITTRLE ||
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compress == COMPRESSION_CCITTRLEW);
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}
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int
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TIFFRGBAImageBegin(TIFFRGBAImage* img, TIFF* tif, int stop, char emsg[1024])
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{
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uint16* sampleinfo;
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uint16 extrasamples;
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uint16 planarconfig;
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uint16 compress;
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int colorchannels;
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uint16 *red_orig, *green_orig, *blue_orig;
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int n_color;
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/* Initialize to normal values */
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img->row_offset = 0;
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img->col_offset = 0;
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img->redcmap = NULL;
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img->greencmap = NULL;
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img->bluecmap = NULL;
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img->req_orientation = ORIENTATION_BOTLEFT; /* It is the default */
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img->tif = tif;
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img->stoponerr = stop;
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TIFFGetFieldDefaulted(tif, TIFFTAG_BITSPERSAMPLE, &img->bitspersample);
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switch (img->bitspersample) {
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case 1: case 2: case 4:
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case 8: case 16:
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break;
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default:
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sprintf(emsg, "Sorry, can not handle images with %d-bit samples",
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img->bitspersample);
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return (0);
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}
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img->alpha = 0;
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TIFFGetFieldDefaulted(tif, TIFFTAG_SAMPLESPERPIXEL, &img->samplesperpixel);
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TIFFGetFieldDefaulted(tif, TIFFTAG_EXTRASAMPLES,
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&extrasamples, &sampleinfo);
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if (extrasamples >= 1)
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{
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switch (sampleinfo[0]) {
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case EXTRASAMPLE_UNSPECIFIED: /* Workaround for some images without */
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if (img->samplesperpixel > 3) /* correct info about alpha channel */
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img->alpha = EXTRASAMPLE_ASSOCALPHA;
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break;
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case EXTRASAMPLE_ASSOCALPHA: /* data is pre-multiplied */
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case EXTRASAMPLE_UNASSALPHA: /* data is not pre-multiplied */
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img->alpha = sampleinfo[0];
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break;
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}
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}
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#ifdef DEFAULT_EXTRASAMPLE_AS_ALPHA
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if( !TIFFGetField(tif, TIFFTAG_PHOTOMETRIC, &img->photometric))
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img->photometric = PHOTOMETRIC_MINISWHITE;
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if( extrasamples == 0
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&& img->samplesperpixel == 4
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&& img->photometric == PHOTOMETRIC_RGB )
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{
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img->alpha = EXTRASAMPLE_ASSOCALPHA;
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extrasamples = 1;
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}
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#endif
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colorchannels = img->samplesperpixel - extrasamples;
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TIFFGetFieldDefaulted(tif, TIFFTAG_COMPRESSION, &compress);
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TIFFGetFieldDefaulted(tif, TIFFTAG_PLANARCONFIG, &planarconfig);
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if (!TIFFGetField(tif, TIFFTAG_PHOTOMETRIC, &img->photometric)) {
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switch (colorchannels) {
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case 1:
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if (isCCITTCompression(tif))
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img->photometric = PHOTOMETRIC_MINISWHITE;
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else
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img->photometric = PHOTOMETRIC_MINISBLACK;
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break;
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case 3:
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img->photometric = PHOTOMETRIC_RGB;
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break;
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default:
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sprintf(emsg, "Missing needed %s tag", photoTag);
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return (0);
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}
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}
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switch (img->photometric) {
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case PHOTOMETRIC_PALETTE:
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if (!TIFFGetField(tif, TIFFTAG_COLORMAP,
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&red_orig, &green_orig, &blue_orig)) {
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sprintf(emsg, "Missing required \"Colormap\" tag");
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return (0);
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}
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/* copy the colormaps so we can modify them */
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n_color = (1L << img->bitspersample);
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img->redcmap = (uint16 *) _TIFFmalloc(sizeof(uint16)*n_color);
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img->greencmap = (uint16 *) _TIFFmalloc(sizeof(uint16)*n_color);
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img->bluecmap = (uint16 *) _TIFFmalloc(sizeof(uint16)*n_color);
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if( !img->redcmap || !img->greencmap || !img->bluecmap ) {
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sprintf(emsg, "Out of memory for colormap copy");
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return (0);
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}
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_TIFFmemcpy( img->redcmap, red_orig, n_color * 2 );
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_TIFFmemcpy( img->greencmap, green_orig, n_color * 2 );
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_TIFFmemcpy( img->bluecmap, blue_orig, n_color * 2 );
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/* fall thru... */
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case PHOTOMETRIC_MINISWHITE:
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case PHOTOMETRIC_MINISBLACK:
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if (planarconfig == PLANARCONFIG_CONTIG
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&& img->samplesperpixel != 1
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&& img->bitspersample < 8 ) {
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sprintf(emsg,
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"Sorry, can not handle contiguous data with %s=%d, "
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"and %s=%d and Bits/Sample=%d",
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photoTag, img->photometric,
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"Samples/pixel", img->samplesperpixel,
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img->bitspersample);
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return (0);
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}
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break;
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case PHOTOMETRIC_YCBCR:
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if (planarconfig != PLANARCONFIG_CONTIG) {
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sprintf(emsg, "Sorry, can not handle YCbCr images with %s=%d",
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"Planarconfiguration", planarconfig);
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return (0);
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}
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/* It would probably be nice to have a reality check here. */
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if (planarconfig == PLANARCONFIG_CONTIG)
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/* can rely on libjpeg to convert to RGB */
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/* XXX should restore current state on exit */
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switch (compress) {
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case COMPRESSION_OJPEG:
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case COMPRESSION_JPEG:
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TIFFSetField(tif, TIFFTAG_JPEGCOLORMODE, JPEGCOLORMODE_RGB);
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img->photometric = PHOTOMETRIC_RGB;
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break;
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default:
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/* do nothing */;
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break;
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}
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break;
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case PHOTOMETRIC_RGB:
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if (colorchannels < 3) {
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sprintf(emsg, "Sorry, can not handle RGB image with %s=%d",
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"Color channels", colorchannels);
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return (0);
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}
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break;
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case PHOTOMETRIC_SEPARATED: {
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uint16 inkset;
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TIFFGetFieldDefaulted(tif, TIFFTAG_INKSET, &inkset);
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if (inkset != INKSET_CMYK) {
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sprintf(emsg, "Sorry, can not handle separated image with %s=%d",
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"InkSet", inkset);
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return (0);
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}
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if (img->samplesperpixel < 4) {
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sprintf(emsg, "Sorry, can not handle separated image with %s=%d",
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"Samples/pixel", img->samplesperpixel);
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return (0);
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}
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break;
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}
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case PHOTOMETRIC_LOGL:
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if (compress != COMPRESSION_SGILOG) {
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sprintf(emsg, "Sorry, LogL data must have %s=%d",
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"Compression", COMPRESSION_SGILOG);
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return (0);
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}
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TIFFSetField(tif, TIFFTAG_SGILOGDATAFMT, SGILOGDATAFMT_8BIT);
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img->photometric = PHOTOMETRIC_MINISBLACK; /* little white lie */
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img->bitspersample = 8;
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break;
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case PHOTOMETRIC_LOGLUV:
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if (compress != COMPRESSION_SGILOG && compress != COMPRESSION_SGILOG24) {
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sprintf(emsg, "Sorry, LogLuv data must have %s=%d or %d",
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"Compression", COMPRESSION_SGILOG, COMPRESSION_SGILOG24);
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return (0);
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}
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if (planarconfig != PLANARCONFIG_CONTIG) {
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sprintf(emsg, "Sorry, can not handle LogLuv images with %s=%d",
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"Planarconfiguration", planarconfig);
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return (0);
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}
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TIFFSetField(tif, TIFFTAG_SGILOGDATAFMT, SGILOGDATAFMT_8BIT);
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img->photometric = PHOTOMETRIC_RGB; /* little white lie */
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img->bitspersample = 8;
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break;
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case PHOTOMETRIC_CIELAB:
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break;
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default:
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sprintf(emsg, "Sorry, can not handle image with %s=%d",
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photoTag, img->photometric);
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return (0);
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}
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img->Map = NULL;
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img->BWmap = NULL;
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img->PALmap = NULL;
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img->ycbcr = NULL;
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img->cielab = NULL;
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TIFFGetField(tif, TIFFTAG_IMAGEWIDTH, &img->width);
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TIFFGetField(tif, TIFFTAG_IMAGELENGTH, &img->height);
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TIFFGetFieldDefaulted(tif, TIFFTAG_ORIENTATION, &img->orientation);
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img->isContig =
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!(planarconfig == PLANARCONFIG_SEPARATE && colorchannels > 1);
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if (img->isContig) {
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img->get = TIFFIsTiled(tif) ? gtTileContig : gtStripContig;
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if (!pickTileContigCase(img)) {
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sprintf(emsg, "Sorry, can not handle image");
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return 0;
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}
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} else {
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img->get = TIFFIsTiled(tif) ? gtTileSeparate : gtStripSeparate;
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if (!pickTileSeparateCase(img)) {
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sprintf(emsg, "Sorry, can not handle image");
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return 0;
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}
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}
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return 1;
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}
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|
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int
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TIFFRGBAImageGet(TIFFRGBAImage* img, uint32* raster, uint32 w, uint32 h)
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{
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if (img->get == NULL) {
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TIFFError(TIFFFileName(img->tif), "No \"get\" routine setup");
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return (0);
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}
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if (img->put.any == NULL) {
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TIFFError(TIFFFileName(img->tif),
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"No \"put\" routine setupl; probably can not handle image format");
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return (0);
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}
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return (*img->get)(img, raster, w, h);
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}
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|
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/*
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* Read the specified image into an ABGR-format rastertaking in account
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* specified orientation.
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*/
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int
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TIFFReadRGBAImageOriented(TIFF* tif,
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uint32 rwidth, uint32 rheight, uint32* raster,
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int orientation, int stop)
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{
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char emsg[1024] = "";
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TIFFRGBAImage img;
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int ok;
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if (TIFFRGBAImageOK(tif, emsg) &&
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TIFFRGBAImageBegin(&img, tif, stop, emsg)) {
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img.req_orientation = orientation;
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/* XXX verify rwidth and rheight against width and height */
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ok = TIFFRGBAImageGet(&img, raster+(rheight-img.height)*rwidth,
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rwidth, img.height);
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TIFFRGBAImageEnd(&img);
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} else {
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TIFFError(TIFFFileName(tif), emsg);
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ok = 0;
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}
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return (ok);
|
|
}
|
|
|
|
/*
|
|
* Read the specified image into an ABGR-format raster. Use bottom left
|
|
* origin for raster by default.
|
|
*/
|
|
int
|
|
TIFFReadRGBAImage(TIFF* tif,
|
|
uint32 rwidth, uint32 rheight, uint32* raster, int stop)
|
|
{
|
|
return TIFFReadRGBAImageOriented(tif, rwidth, rheight, raster,
|
|
ORIENTATION_BOTLEFT, stop);
|
|
}
|
|
|
|
static int
|
|
setorientation(TIFFRGBAImage* img)
|
|
{
|
|
switch (img->orientation) {
|
|
case ORIENTATION_TOPLEFT:
|
|
case ORIENTATION_LEFTTOP:
|
|
if (img->req_orientation == ORIENTATION_TOPRIGHT ||
|
|
img->req_orientation == ORIENTATION_RIGHTTOP)
|
|
return FLIP_HORIZONTALLY;
|
|
else if (img->req_orientation == ORIENTATION_BOTRIGHT ||
|
|
img->req_orientation == ORIENTATION_RIGHTBOT)
|
|
return FLIP_HORIZONTALLY | FLIP_VERTICALLY;
|
|
else if (img->req_orientation == ORIENTATION_BOTLEFT ||
|
|
img->req_orientation == ORIENTATION_LEFTBOT)
|
|
return FLIP_VERTICALLY;
|
|
else
|
|
return 0;
|
|
case ORIENTATION_TOPRIGHT:
|
|
case ORIENTATION_RIGHTTOP:
|
|
if (img->req_orientation == ORIENTATION_TOPLEFT ||
|
|
img->req_orientation == ORIENTATION_LEFTTOP)
|
|
return FLIP_HORIZONTALLY;
|
|
else if (img->req_orientation == ORIENTATION_BOTRIGHT ||
|
|
img->req_orientation == ORIENTATION_RIGHTBOT)
|
|
return FLIP_VERTICALLY;
|
|
else if (img->req_orientation == ORIENTATION_BOTLEFT ||
|
|
img->req_orientation == ORIENTATION_LEFTBOT)
|
|
return FLIP_HORIZONTALLY | FLIP_VERTICALLY;
|
|
else
|
|
return 0;
|
|
case ORIENTATION_BOTRIGHT:
|
|
case ORIENTATION_RIGHTBOT:
|
|
if (img->req_orientation == ORIENTATION_TOPLEFT ||
|
|
img->req_orientation == ORIENTATION_LEFTTOP)
|
|
return FLIP_HORIZONTALLY | FLIP_VERTICALLY;
|
|
else if (img->req_orientation == ORIENTATION_TOPRIGHT ||
|
|
img->req_orientation == ORIENTATION_RIGHTTOP)
|
|
return FLIP_VERTICALLY;
|
|
else if (img->req_orientation == ORIENTATION_BOTLEFT ||
|
|
img->req_orientation == ORIENTATION_LEFTBOT)
|
|
return FLIP_HORIZONTALLY;
|
|
else
|
|
return 0;
|
|
case ORIENTATION_BOTLEFT:
|
|
case ORIENTATION_LEFTBOT:
|
|
if (img->req_orientation == ORIENTATION_TOPLEFT ||
|
|
img->req_orientation == ORIENTATION_LEFTTOP)
|
|
return FLIP_VERTICALLY;
|
|
else if (img->req_orientation == ORIENTATION_TOPRIGHT ||
|
|
img->req_orientation == ORIENTATION_RIGHTTOP)
|
|
return FLIP_HORIZONTALLY | FLIP_VERTICALLY;
|
|
else if (img->req_orientation == ORIENTATION_BOTRIGHT ||
|
|
img->req_orientation == ORIENTATION_RIGHTBOT)
|
|
return FLIP_HORIZONTALLY;
|
|
else
|
|
return 0;
|
|
default: /* NOTREACHED */
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Get an tile-organized image that has
|
|
* PlanarConfiguration contiguous if SamplesPerPixel > 1
|
|
* or
|
|
* SamplesPerPixel == 1
|
|
*/
|
|
static int
|
|
gtTileContig(TIFFRGBAImage* img, uint32* raster, uint32 w, uint32 h)
|
|
{
|
|
TIFF* tif = img->tif;
|
|
tileContigRoutine put = img->put.contig;
|
|
uint32 col, row, y, rowstoread;
|
|
uint32 pos;
|
|
uint32 tw, th;
|
|
unsigned char* buf;
|
|
int32 fromskew, toskew;
|
|
uint32 nrow;
|
|
int ret = 1, flip;
|
|
|
|
buf = (unsigned char*) _TIFFmalloc(TIFFTileSize(tif));
|
|
if (buf == 0) {
|
|
TIFFError(TIFFFileName(tif), "No space for tile buffer");
|
|
return (0);
|
|
}
|
|
_TIFFmemset(buf, 0, TIFFTileSize(tif));
|
|
TIFFGetField(tif, TIFFTAG_TILEWIDTH, &tw);
|
|
TIFFGetField(tif, TIFFTAG_TILELENGTH, &th);
|
|
|
|
flip = setorientation(img);
|
|
if (flip & FLIP_VERTICALLY) {
|
|
y = h - 1;
|
|
toskew = -(int32)(tw + w);
|
|
}
|
|
else {
|
|
y = 0;
|
|
toskew = -(int32)(tw - w);
|
|
}
|
|
|
|
for (row = 0; row < h; row += nrow)
|
|
{
|
|
rowstoread = th - (row + img->row_offset) % th;
|
|
nrow = (row + rowstoread > h ? h - row : rowstoread);
|
|
for (col = 0; col < w; col += tw)
|
|
{
|
|
if (TIFFReadTile(tif, buf, col+img->col_offset,
|
|
row+img->row_offset, 0, 0) < 0 && img->stoponerr)
|
|
{
|
|
ret = 0;
|
|
break;
|
|
}
|
|
|
|
pos = ((row+img->row_offset) % th) * TIFFTileRowSize(tif);
|
|
|
|
if (col + tw > w)
|
|
{
|
|
/*
|
|
* Tile is clipped horizontally. Calculate
|
|
* visible portion and skewing factors.
|
|
*/
|
|
uint32 npix = w - col;
|
|
fromskew = tw - npix;
|
|
(*put)(img, raster+y*w+col, col, y,
|
|
npix, nrow, fromskew, toskew + fromskew, buf + pos);
|
|
}
|
|
else
|
|
{
|
|
(*put)(img, raster+y*w+col, col, y, tw, nrow, 0, toskew, buf + pos);
|
|
}
|
|
}
|
|
|
|
y += (flip & FLIP_VERTICALLY ? -(int32) nrow : (int32) nrow);
|
|
}
|
|
_TIFFfree(buf);
|
|
|
|
if (flip & FLIP_HORIZONTALLY) {
|
|
uint32 line;
|
|
|
|
for (line = 0; line < h; line++) {
|
|
uint32 *left = raster + (line * w);
|
|
uint32 *right = left + w - 1;
|
|
|
|
while ( left < right ) {
|
|
uint32 temp = *left;
|
|
*left = *right;
|
|
*right = temp;
|
|
left++, right--;
|
|
}
|
|
}
|
|
}
|
|
|
|
return (ret);
|
|
}
|
|
|
|
/*
|
|
* Get an tile-organized image that has
|
|
* SamplesPerPixel > 1
|
|
* PlanarConfiguration separated
|
|
* We assume that all such images are RGB.
|
|
*/
|
|
static int
|
|
gtTileSeparate(TIFFRGBAImage* img, uint32* raster, uint32 w, uint32 h)
|
|
{
|
|
TIFF* tif = img->tif;
|
|
tileSeparateRoutine put = img->put.separate;
|
|
uint32 col, row, y, rowstoread;
|
|
uint32 pos;
|
|
uint32 tw, th;
|
|
unsigned char* buf;
|
|
unsigned char* r;
|
|
unsigned char* g;
|
|
unsigned char* b;
|
|
unsigned char* a;
|
|
tsize_t tilesize;
|
|
int32 fromskew, toskew;
|
|
int alpha = img->alpha;
|
|
uint32 nrow;
|
|
int ret = 1, flip;
|
|
|
|
tilesize = TIFFTileSize(tif);
|
|
buf = (unsigned char*) _TIFFmalloc(4*tilesize);
|
|
if (buf == 0) {
|
|
TIFFError(TIFFFileName(tif), "No space for tile buffer");
|
|
return (0);
|
|
}
|
|
_TIFFmemset(buf, 0, 4*tilesize);
|
|
r = buf;
|
|
g = r + tilesize;
|
|
b = g + tilesize;
|
|
a = b + tilesize;
|
|
if (!alpha)
|
|
_TIFFmemset(a, 0xff, tilesize);
|
|
TIFFGetField(tif, TIFFTAG_TILEWIDTH, &tw);
|
|
TIFFGetField(tif, TIFFTAG_TILELENGTH, &th);
|
|
|
|
flip = setorientation(img);
|
|
if (flip & FLIP_VERTICALLY) {
|
|
y = h - 1;
|
|
toskew = -(int32)(tw + w);
|
|
}
|
|
else {
|
|
y = 0;
|
|
toskew = -(int32)(tw - w);
|
|
}
|
|
|
|
for (row = 0; row < h; row += nrow)
|
|
{
|
|
rowstoread = th - (row + img->row_offset) % th;
|
|
nrow = (row + rowstoread > h ? h - row : rowstoread);
|
|
for (col = 0; col < w; col += tw)
|
|
{
|
|
if (TIFFReadTile(tif, r, col+img->col_offset,
|
|
row+img->row_offset,0,0) < 0 && img->stoponerr)
|
|
{
|
|
ret = 0;
|
|
break;
|
|
}
|
|
if (TIFFReadTile(tif, g, col+img->col_offset,
|
|
row+img->row_offset,0,1) < 0 && img->stoponerr)
|
|
{
|
|
ret = 0;
|
|
break;
|
|
}
|
|
if (TIFFReadTile(tif, b, col+img->col_offset,
|
|
row+img->row_offset,0,2) < 0 && img->stoponerr)
|
|
{
|
|
ret = 0;
|
|
break;
|
|
}
|
|
if (alpha && TIFFReadTile(tif,a,col+img->col_offset,
|
|
row+img->row_offset,0,3) < 0 && img->stoponerr)
|
|
{
|
|
ret = 0;
|
|
break;
|
|
}
|
|
|
|
pos = ((row+img->row_offset) % th) * TIFFTileRowSize(tif);
|
|
|
|
if (col + tw > w)
|
|
{
|
|
/*
|
|
* Tile is clipped horizontally. Calculate
|
|
* visible portion and skewing factors.
|
|
*/
|
|
uint32 npix = w - col;
|
|
fromskew = tw - npix;
|
|
(*put)(img, raster+y*w+col, col, y,
|
|
npix, nrow, fromskew, toskew + fromskew,
|
|
r + pos, g + pos, b + pos, a + pos);
|
|
} else {
|
|
(*put)(img, raster+y*w+col, col, y,
|
|
tw, nrow, 0, toskew, r + pos, g + pos, b + pos, a + pos);
|
|
}
|
|
}
|
|
|
|
y += (flip & FLIP_VERTICALLY ?-(int32) nrow : (int32) nrow);
|
|
}
|
|
|
|
if (flip & FLIP_HORIZONTALLY) {
|
|
uint32 line;
|
|
|
|
for (line = 0; line < h; line++) {
|
|
uint32 *left = raster + (line * w);
|
|
uint32 *right = left + w - 1;
|
|
|
|
while ( left < right ) {
|
|
uint32 temp = *left;
|
|
*left = *right;
|
|
*right = temp;
|
|
left++, right--;
|
|
}
|
|
}
|
|
}
|
|
|
|
_TIFFfree(buf);
|
|
return (ret);
|
|
}
|
|
|
|
/*
|
|
* Get a strip-organized image that has
|
|
* PlanarConfiguration contiguous if SamplesPerPixel > 1
|
|
* or
|
|
* SamplesPerPixel == 1
|
|
*/
|
|
static int
|
|
gtStripContig(TIFFRGBAImage* img, uint32* raster, uint32 w, uint32 h)
|
|
{
|
|
TIFF* tif = img->tif;
|
|
tileContigRoutine put = img->put.contig;
|
|
uint32 row, y, nrow, rowstoread;
|
|
uint32 pos;
|
|
unsigned char* buf;
|
|
uint32 rowsperstrip;
|
|
uint32 imagewidth = img->width;
|
|
tsize_t scanline;
|
|
int32 fromskew, toskew;
|
|
int ret = 1, flip;
|
|
|
|
buf = (unsigned char*) _TIFFmalloc(TIFFStripSize(tif));
|
|
if (buf == 0) {
|
|
TIFFError(TIFFFileName(tif), "No space for strip buffer");
|
|
return (0);
|
|
}
|
|
_TIFFmemset(buf, 0, TIFFStripSize(tif));
|
|
|
|
flip = setorientation(img);
|
|
if (flip & FLIP_VERTICALLY) {
|
|
y = h - 1;
|
|
toskew = -(int32)(w + w);
|
|
} else {
|
|
y = 0;
|
|
toskew = -(int32)(w - w);
|
|
}
|
|
|
|
TIFFGetFieldDefaulted(tif, TIFFTAG_ROWSPERSTRIP, &rowsperstrip);
|
|
scanline = TIFFScanlineSize(tif);
|
|
fromskew = (w < imagewidth ? imagewidth - w : 0);
|
|
for (row = 0; row < h; row += nrow)
|
|
{
|
|
rowstoread = rowsperstrip - (row + img->row_offset) % rowsperstrip;
|
|
nrow = (row + rowstoread > h ? h - row : rowstoread);
|
|
if (TIFFReadEncodedStrip(tif,
|
|
TIFFComputeStrip(tif,row+img->row_offset, 0),
|
|
buf,
|
|
((row + img->row_offset)%rowsperstrip + nrow) * scanline) < 0
|
|
&& img->stoponerr)
|
|
{
|
|
ret = 0;
|
|
break;
|
|
}
|
|
|
|
pos = ((row + img->row_offset) % rowsperstrip) * scanline;
|
|
(*put)(img, raster+y*w, 0, y, w, nrow, fromskew, toskew, buf + pos);
|
|
y += (flip & FLIP_VERTICALLY ? -(int32) nrow : (int32) nrow);
|
|
}
|
|
|
|
if (flip & FLIP_HORIZONTALLY) {
|
|
uint32 line;
|
|
|
|
for (line = 0; line < h; line++) {
|
|
uint32 *left = raster + (line * w);
|
|
uint32 *right = left + w - 1;
|
|
|
|
while ( left < right ) {
|
|
uint32 temp = *left;
|
|
*left = *right;
|
|
*right = temp;
|
|
left++, right--;
|
|
}
|
|
}
|
|
}
|
|
|
|
_TIFFfree(buf);
|
|
return (ret);
|
|
}
|
|
|
|
/*
|
|
* Get a strip-organized image with
|
|
* SamplesPerPixel > 1
|
|
* PlanarConfiguration separated
|
|
* We assume that all such images are RGB.
|
|
*/
|
|
static int
|
|
gtStripSeparate(TIFFRGBAImage* img, uint32* raster, uint32 w, uint32 h)
|
|
{
|
|
TIFF* tif = img->tif;
|
|
tileSeparateRoutine put = img->put.separate;
|
|
unsigned char *buf;
|
|
unsigned char *r, *g, *b, *a;
|
|
uint32 row, y, nrow, rowstoread;
|
|
uint32 pos;
|
|
tsize_t scanline;
|
|
uint32 rowsperstrip, offset_row;
|
|
uint32 imagewidth = img->width;
|
|
tsize_t stripsize;
|
|
int32 fromskew, toskew;
|
|
int alpha = img->alpha;
|
|
int ret = 1, flip;
|
|
|
|
stripsize = TIFFStripSize(tif);
|
|
r = buf = (unsigned char *)_TIFFmalloc(4*stripsize);
|
|
if (buf == 0) {
|
|
TIFFError(TIFFFileName(tif), "No space for tile buffer");
|
|
return (0);
|
|
}
|
|
_TIFFmemset(buf, 0, 4*stripsize);
|
|
g = r + stripsize;
|
|
b = g + stripsize;
|
|
a = b + stripsize;
|
|
if (!alpha)
|
|
_TIFFmemset(a, 0xff, stripsize);
|
|
|
|
flip = setorientation(img);
|
|
if (flip & FLIP_VERTICALLY) {
|
|
y = h - 1;
|
|
toskew = -(int32)(w + w);
|
|
}
|
|
else {
|
|
y = 0;
|
|
toskew = -(int32)(w - w);
|
|
}
|
|
|
|
TIFFGetFieldDefaulted(tif, TIFFTAG_ROWSPERSTRIP, &rowsperstrip);
|
|
scanline = TIFFScanlineSize(tif);
|
|
fromskew = (w < imagewidth ? imagewidth - w : 0);
|
|
for (row = 0; row < h; row += nrow)
|
|
{
|
|
rowstoread = rowsperstrip - (row + img->row_offset) % rowsperstrip;
|
|
nrow = (row + rowstoread > h ? h - row : rowstoread);
|
|
offset_row = row + img->row_offset;
|
|
if (TIFFReadEncodedStrip(tif, TIFFComputeStrip(tif, offset_row, 0),
|
|
r, ((row + img->row_offset)%rowsperstrip + nrow) * scanline) < 0
|
|
&& img->stoponerr)
|
|
{
|
|
ret = 0;
|
|
break;
|
|
}
|
|
if (TIFFReadEncodedStrip(tif, TIFFComputeStrip(tif, offset_row, 1),
|
|
g, ((row + img->row_offset)%rowsperstrip + nrow) * scanline) < 0
|
|
&& img->stoponerr)
|
|
{
|
|
ret = 0;
|
|
break;
|
|
}
|
|
if (TIFFReadEncodedStrip(tif, TIFFComputeStrip(tif, offset_row, 2),
|
|
b, ((row + img->row_offset)%rowsperstrip + nrow) * scanline) < 0
|
|
&& img->stoponerr)
|
|
{
|
|
ret = 0;
|
|
break;
|
|
}
|
|
if (alpha &&
|
|
(TIFFReadEncodedStrip(tif, TIFFComputeStrip(tif, offset_row, 3),
|
|
a, ((row + img->row_offset)%rowsperstrip + nrow) * scanline) < 0
|
|
&& img->stoponerr))
|
|
{
|
|
ret = 0;
|
|
break;
|
|
}
|
|
|
|
pos = ((row + img->row_offset) % rowsperstrip) * scanline;
|
|
(*put)(img, raster+y*w, 0, y, w, nrow, fromskew, toskew, r + pos, g + pos,
|
|
b + pos, a + pos);
|
|
y += (flip & FLIP_VERTICALLY ? -(int32) nrow : (int32) nrow);
|
|
}
|
|
|
|
if (flip & FLIP_HORIZONTALLY) {
|
|
uint32 line;
|
|
|
|
for (line = 0; line < h; line++) {
|
|
uint32 *left = raster + (line * w);
|
|
uint32 *right = left + w - 1;
|
|
|
|
while ( left < right ) {
|
|
uint32 temp = *left;
|
|
*left = *right;
|
|
*right = temp;
|
|
left++, right--;
|
|
}
|
|
}
|
|
}
|
|
|
|
_TIFFfree(buf);
|
|
return (ret);
|
|
}
|
|
|
|
/*
|
|
* The following routines move decoded data returned
|
|
* from the TIFF library into rasters filled with packed
|
|
* ABGR pixels (i.e. suitable for passing to lrecwrite.)
|
|
*
|
|
* The routines have been created according to the most
|
|
* important cases and optimized. pickTileContigCase and
|
|
* pickTileSeparateCase analyze the parameters and select
|
|
* the appropriate "put" routine to use.
|
|
*/
|
|
#define REPEAT8(op) REPEAT4(op); REPEAT4(op)
|
|
#define REPEAT4(op) REPEAT2(op); REPEAT2(op)
|
|
#define REPEAT2(op) op; op
|
|
#define CASE8(x,op) \
|
|
switch (x) { \
|
|
case 7: op; case 6: op; case 5: op; \
|
|
case 4: op; case 3: op; case 2: op; \
|
|
case 1: op; \
|
|
}
|
|
#define CASE4(x,op) switch (x) { case 3: op; case 2: op; case 1: op; }
|
|
#define NOP
|
|
|
|
#define UNROLL8(w, op1, op2) { \
|
|
uint32 _x; \
|
|
for (_x = w; _x >= 8; _x -= 8) { \
|
|
op1; \
|
|
REPEAT8(op2); \
|
|
} \
|
|
if (_x > 0) { \
|
|
op1; \
|
|
CASE8(_x,op2); \
|
|
} \
|
|
}
|
|
#define UNROLL4(w, op1, op2) { \
|
|
uint32 _x; \
|
|
for (_x = w; _x >= 4; _x -= 4) { \
|
|
op1; \
|
|
REPEAT4(op2); \
|
|
} \
|
|
if (_x > 0) { \
|
|
op1; \
|
|
CASE4(_x,op2); \
|
|
} \
|
|
}
|
|
#define UNROLL2(w, op1, op2) { \
|
|
uint32 _x; \
|
|
for (_x = w; _x >= 2; _x -= 2) { \
|
|
op1; \
|
|
REPEAT2(op2); \
|
|
} \
|
|
if (_x) { \
|
|
op1; \
|
|
op2; \
|
|
} \
|
|
}
|
|
|
|
#define SKEW(r,g,b,skew) { r += skew; g += skew; b += skew; }
|
|
#define SKEW4(r,g,b,a,skew) { r += skew; g += skew; b += skew; a+= skew; }
|
|
|
|
#define A1 (((uint32)0xffL)<<24)
|
|
#define PACK(r,g,b) \
|
|
((uint32)(r)|((uint32)(g)<<8)|((uint32)(b)<<16)|A1)
|
|
#define PACK4(r,g,b,a) \
|
|
((uint32)(r)|((uint32)(g)<<8)|((uint32)(b)<<16)|((uint32)(a)<<24))
|
|
#define W2B(v) (((v)>>8)&0xff)
|
|
#define PACKW(r,g,b) \
|
|
((uint32)W2B(r)|((uint32)W2B(g)<<8)|((uint32)W2B(b)<<16)|A1)
|
|
#define PACKW4(r,g,b,a) \
|
|
((uint32)W2B(r)|((uint32)W2B(g)<<8)|((uint32)W2B(b)<<16)|((uint32)W2B(a)<<24))
|
|
|
|
#define DECLAREContigPutFunc(name) \
|
|
static void name(\
|
|
TIFFRGBAImage* img, \
|
|
uint32* cp, \
|
|
uint32 x, uint32 y, \
|
|
uint32 w, uint32 h, \
|
|
int32 fromskew, int32 toskew, \
|
|
unsigned char* pp \
|
|
)
|
|
|
|
/*
|
|
* 8-bit palette => colormap/RGB
|
|
*/
|
|
DECLAREContigPutFunc(put8bitcmaptile)
|
|
{
|
|
uint32** PALmap = img->PALmap;
|
|
int samplesperpixel = img->samplesperpixel;
|
|
|
|
(void) y;
|
|
while (h-- > 0) {
|
|
for (x = w; x-- > 0;)
|
|
{
|
|
*cp++ = PALmap[*pp][0];
|
|
pp += samplesperpixel;
|
|
}
|
|
cp += toskew;
|
|
pp += fromskew;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* 4-bit palette => colormap/RGB
|
|
*/
|
|
DECLAREContigPutFunc(put4bitcmaptile)
|
|
{
|
|
uint32** PALmap = img->PALmap;
|
|
|
|
(void) x; (void) y;
|
|
fromskew /= 2;
|
|
while (h-- > 0) {
|
|
uint32* bw;
|
|
UNROLL2(w, bw = PALmap[*pp++], *cp++ = *bw++);
|
|
cp += toskew;
|
|
pp += fromskew;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* 2-bit palette => colormap/RGB
|
|
*/
|
|
DECLAREContigPutFunc(put2bitcmaptile)
|
|
{
|
|
uint32** PALmap = img->PALmap;
|
|
|
|
(void) x; (void) y;
|
|
fromskew /= 4;
|
|
while (h-- > 0) {
|
|
uint32* bw;
|
|
UNROLL4(w, bw = PALmap[*pp++], *cp++ = *bw++);
|
|
cp += toskew;
|
|
pp += fromskew;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* 1-bit palette => colormap/RGB
|
|
*/
|
|
DECLAREContigPutFunc(put1bitcmaptile)
|
|
{
|
|
uint32** PALmap = img->PALmap;
|
|
|
|
(void) x; (void) y;
|
|
fromskew /= 8;
|
|
while (h-- > 0) {
|
|
uint32* bw;
|
|
UNROLL8(w, bw = PALmap[*pp++], *cp++ = *bw++);
|
|
cp += toskew;
|
|
pp += fromskew;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* 8-bit greyscale => colormap/RGB
|
|
*/
|
|
DECLAREContigPutFunc(putgreytile)
|
|
{
|
|
int samplesperpixel = img->samplesperpixel;
|
|
uint32** BWmap = img->BWmap;
|
|
|
|
(void) y;
|
|
while (h-- > 0) {
|
|
for (x = w; x-- > 0;)
|
|
{
|
|
*cp++ = BWmap[*pp][0];
|
|
pp += samplesperpixel;
|
|
}
|
|
cp += toskew;
|
|
pp += fromskew;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* 16-bit greyscale => colormap/RGB
|
|
*/
|
|
DECLAREContigPutFunc(put16bitbwtile)
|
|
{
|
|
int samplesperpixel = img->samplesperpixel;
|
|
uint32** BWmap = img->BWmap;
|
|
|
|
(void) y;
|
|
while (h-- > 0) {
|
|
uint16 *wp = (uint16 *) pp;
|
|
|
|
for (x = w; x-- > 0;)
|
|
{
|
|
/* use high order byte of 16bit value */
|
|
|
|
*cp++ = BWmap[*wp >> 8][0];
|
|
pp += 2 * samplesperpixel;
|
|
wp += samplesperpixel;
|
|
}
|
|
cp += toskew;
|
|
pp += fromskew;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* 1-bit bilevel => colormap/RGB
|
|
*/
|
|
DECLAREContigPutFunc(put1bitbwtile)
|
|
{
|
|
uint32** BWmap = img->BWmap;
|
|
|
|
(void) x; (void) y;
|
|
fromskew /= 8;
|
|
while (h-- > 0) {
|
|
uint32* bw;
|
|
UNROLL8(w, bw = BWmap[*pp++], *cp++ = *bw++);
|
|
cp += toskew;
|
|
pp += fromskew;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* 2-bit greyscale => colormap/RGB
|
|
*/
|
|
DECLAREContigPutFunc(put2bitbwtile)
|
|
{
|
|
uint32** BWmap = img->BWmap;
|
|
|
|
(void) x; (void) y;
|
|
fromskew /= 4;
|
|
while (h-- > 0) {
|
|
uint32* bw;
|
|
UNROLL4(w, bw = BWmap[*pp++], *cp++ = *bw++);
|
|
cp += toskew;
|
|
pp += fromskew;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* 4-bit greyscale => colormap/RGB
|
|
*/
|
|
DECLAREContigPutFunc(put4bitbwtile)
|
|
{
|
|
uint32** BWmap = img->BWmap;
|
|
|
|
(void) x; (void) y;
|
|
fromskew /= 2;
|
|
while (h-- > 0) {
|
|
uint32* bw;
|
|
UNROLL2(w, bw = BWmap[*pp++], *cp++ = *bw++);
|
|
cp += toskew;
|
|
pp += fromskew;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* 8-bit packed samples, no Map => RGB
|
|
*/
|
|
DECLAREContigPutFunc(putRGBcontig8bittile)
|
|
{
|
|
int samplesperpixel = img->samplesperpixel;
|
|
|
|
(void) x; (void) y;
|
|
fromskew *= samplesperpixel;
|
|
while (h-- > 0) {
|
|
UNROLL8(w, NOP,
|
|
*cp++ = PACK(pp[0], pp[1], pp[2]);
|
|
pp += samplesperpixel);
|
|
cp += toskew;
|
|
pp += fromskew;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* 8-bit packed samples, w/ Map => RGB
|
|
*/
|
|
DECLAREContigPutFunc(putRGBcontig8bitMaptile)
|
|
{
|
|
TIFFRGBValue* Map = img->Map;
|
|
int samplesperpixel = img->samplesperpixel;
|
|
|
|
(void) y;
|
|
fromskew *= samplesperpixel;
|
|
while (h-- > 0) {
|
|
for (x = w; x-- > 0;) {
|
|
*cp++ = PACK(Map[pp[0]], Map[pp[1]], Map[pp[2]]);
|
|
pp += samplesperpixel;
|
|
}
|
|
pp += fromskew;
|
|
cp += toskew;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* 8-bit packed samples => RGBA w/ associated alpha
|
|
* (known to have Map == NULL)
|
|
*/
|
|
DECLAREContigPutFunc(putRGBAAcontig8bittile)
|
|
{
|
|
int samplesperpixel = img->samplesperpixel;
|
|
|
|
(void) x; (void) y;
|
|
fromskew *= samplesperpixel;
|
|
while (h-- > 0) {
|
|
UNROLL8(w, NOP,
|
|
*cp++ = PACK4(pp[0], pp[1], pp[2], pp[3]);
|
|
pp += samplesperpixel);
|
|
cp += toskew;
|
|
pp += fromskew;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* 8-bit packed samples => RGBA w/ unassociated alpha
|
|
* (known to have Map == NULL)
|
|
*/
|
|
DECLAREContigPutFunc(putRGBUAcontig8bittile)
|
|
{
|
|
int samplesperpixel = img->samplesperpixel;
|
|
|
|
(void) y;
|
|
fromskew *= samplesperpixel;
|
|
while (h-- > 0) {
|
|
uint32 r, g, b, a;
|
|
for (x = w; x-- > 0;) {
|
|
a = pp[3];
|
|
r = (pp[0] * a) / 255;
|
|
g = (pp[1] * a) / 255;
|
|
b = (pp[2] * a) / 255;
|
|
*cp++ = PACK4(r,g,b,a);
|
|
pp += samplesperpixel;
|
|
}
|
|
cp += toskew;
|
|
pp += fromskew;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* 16-bit packed samples => RGB
|
|
*/
|
|
DECLAREContigPutFunc(putRGBcontig16bittile)
|
|
{
|
|
int samplesperpixel = img->samplesperpixel;
|
|
uint16 *wp = (uint16 *)pp;
|
|
|
|
(void) y;
|
|
fromskew *= samplesperpixel;
|
|
while (h-- > 0) {
|
|
for (x = w; x-- > 0;) {
|
|
*cp++ = PACKW(wp[0], wp[1], wp[2]);
|
|
wp += samplesperpixel;
|
|
}
|
|
cp += toskew;
|
|
wp += fromskew;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* 16-bit packed samples => RGBA w/ associated alpha
|
|
* (known to have Map == NULL)
|
|
*/
|
|
DECLAREContigPutFunc(putRGBAAcontig16bittile)
|
|
{
|
|
int samplesperpixel = img->samplesperpixel;
|
|
uint16 *wp = (uint16 *)pp;
|
|
|
|
(void) y;
|
|
fromskew *= samplesperpixel;
|
|
while (h-- > 0) {
|
|
for (x = w; x-- > 0;) {
|
|
*cp++ = PACKW4(wp[0], wp[1], wp[2], wp[3]);
|
|
wp += samplesperpixel;
|
|
}
|
|
cp += toskew;
|
|
wp += fromskew;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* 16-bit packed samples => RGBA w/ unassociated alpha
|
|
* (known to have Map == NULL)
|
|
*/
|
|
DECLAREContigPutFunc(putRGBUAcontig16bittile)
|
|
{
|
|
int samplesperpixel = img->samplesperpixel;
|
|
uint16 *wp = (uint16 *)pp;
|
|
|
|
(void) y;
|
|
fromskew *= samplesperpixel;
|
|
while (h-- > 0) {
|
|
uint32 r,g,b,a;
|
|
/*
|
|
* We shift alpha down four bits just in case unsigned
|
|
* arithmetic doesn't handle the full range.
|
|
* We still have plenty of accuracy, since the output is 8 bits.
|
|
* So we have (r * 0xffff) * (a * 0xfff)) = r*a * (0xffff*0xfff)
|
|
* Since we want r*a * 0xff for eight bit output,
|
|
* we divide by (0xffff * 0xfff) / 0xff == 0x10eff.
|
|
*/
|
|
for (x = w; x-- > 0;) {
|
|
a = wp[3] >> 4;
|
|
r = (wp[0] * a) / 0x10eff;
|
|
g = (wp[1] * a) / 0x10eff;
|
|
b = (wp[2] * a) / 0x10eff;
|
|
*cp++ = PACK4(r,g,b,a);
|
|
wp += samplesperpixel;
|
|
}
|
|
cp += toskew;
|
|
wp += fromskew;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* 8-bit packed CMYK samples w/o Map => RGB
|
|
*
|
|
* NB: The conversion of CMYK->RGB is *very* crude.
|
|
*/
|
|
DECLAREContigPutFunc(putRGBcontig8bitCMYKtile)
|
|
{
|
|
int samplesperpixel = img->samplesperpixel;
|
|
uint16 r, g, b, k;
|
|
|
|
(void) x; (void) y;
|
|
fromskew *= samplesperpixel;
|
|
while (h-- > 0) {
|
|
UNROLL8(w, NOP,
|
|
k = 255 - pp[3];
|
|
r = (k*(255-pp[0]))/255;
|
|
g = (k*(255-pp[1]))/255;
|
|
b = (k*(255-pp[2]))/255;
|
|
*cp++ = PACK(r, g, b);
|
|
pp += samplesperpixel);
|
|
cp += toskew;
|
|
pp += fromskew;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* 8-bit packed CMYK samples w/Map => RGB
|
|
*
|
|
* NB: The conversion of CMYK->RGB is *very* crude.
|
|
*/
|
|
DECLAREContigPutFunc(putRGBcontig8bitCMYKMaptile)
|
|
{
|
|
int samplesperpixel = img->samplesperpixel;
|
|
TIFFRGBValue* Map = img->Map;
|
|
uint16 r, g, b, k;
|
|
|
|
(void) y;
|
|
fromskew *= samplesperpixel;
|
|
while (h-- > 0) {
|
|
for (x = w; x-- > 0;) {
|
|
k = 255 - pp[3];
|
|
r = (k*(255-pp[0]))/255;
|
|
g = (k*(255-pp[1]))/255;
|
|
b = (k*(255-pp[2]))/255;
|
|
*cp++ = PACK(Map[r], Map[g], Map[b]);
|
|
pp += samplesperpixel;
|
|
}
|
|
pp += fromskew;
|
|
cp += toskew;
|
|
}
|
|
}
|
|
|
|
#define DECLARESepPutFunc(name) \
|
|
static void name(\
|
|
TIFFRGBAImage* img,\
|
|
uint32* cp,\
|
|
uint32 x, uint32 y, \
|
|
uint32 w, uint32 h,\
|
|
int32 fromskew, int32 toskew,\
|
|
unsigned char* r, unsigned char* g, unsigned char* b, unsigned char* a\
|
|
)
|
|
|
|
/*
|
|
* 8-bit unpacked samples => RGB
|
|
*/
|
|
DECLARESepPutFunc(putRGBseparate8bittile)
|
|
{
|
|
(void) img; (void) x; (void) y; (void) a;
|
|
while (h-- > 0) {
|
|
UNROLL8(w, NOP, *cp++ = PACK(*r++, *g++, *b++));
|
|
SKEW(r, g, b, fromskew);
|
|
cp += toskew;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* 8-bit unpacked samples => RGB
|
|
*/
|
|
DECLARESepPutFunc(putRGBseparate8bitMaptile)
|
|
{
|
|
TIFFRGBValue* Map = img->Map;
|
|
|
|
(void) y; (void) a;
|
|
while (h-- > 0) {
|
|
for (x = w; x > 0; x--)
|
|
*cp++ = PACK(Map[*r++], Map[*g++], Map[*b++]);
|
|
SKEW(r, g, b, fromskew);
|
|
cp += toskew;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* 8-bit unpacked samples => RGBA w/ associated alpha
|
|
*/
|
|
DECLARESepPutFunc(putRGBAAseparate8bittile)
|
|
{
|
|
(void) img; (void) x; (void) y;
|
|
while (h-- > 0) {
|
|
UNROLL8(w, NOP, *cp++ = PACK4(*r++, *g++, *b++, *a++));
|
|
SKEW4(r, g, b, a, fromskew);
|
|
cp += toskew;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* 8-bit unpacked samples => RGBA w/ unassociated alpha
|
|
*/
|
|
DECLARESepPutFunc(putRGBUAseparate8bittile)
|
|
{
|
|
(void) img; (void) y;
|
|
while (h-- > 0) {
|
|
uint32 rv, gv, bv, av;
|
|
for (x = w; x-- > 0;) {
|
|
av = *a++;
|
|
rv = (*r++ * av) / 255;
|
|
gv = (*g++ * av) / 255;
|
|
bv = (*b++ * av) / 255;
|
|
*cp++ = PACK4(rv,gv,bv,av);
|
|
}
|
|
SKEW4(r, g, b, a, fromskew);
|
|
cp += toskew;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* 16-bit unpacked samples => RGB
|
|
*/
|
|
DECLARESepPutFunc(putRGBseparate16bittile)
|
|
{
|
|
uint16 *wr = (uint16*) r;
|
|
uint16 *wg = (uint16*) g;
|
|
uint16 *wb = (uint16*) b;
|
|
|
|
(void) img; (void) y; (void) a;
|
|
while (h-- > 0) {
|
|
for (x = 0; x < w; x++)
|
|
*cp++ = PACKW(*wr++, *wg++, *wb++);
|
|
SKEW(wr, wg, wb, fromskew);
|
|
cp += toskew;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* 16-bit unpacked samples => RGBA w/ associated alpha
|
|
*/
|
|
DECLARESepPutFunc(putRGBAAseparate16bittile)
|
|
{
|
|
uint16 *wr = (uint16*) r;
|
|
uint16 *wg = (uint16*) g;
|
|
uint16 *wb = (uint16*) b;
|
|
uint16 *wa = (uint16*) a;
|
|
|
|
(void) img; (void) y;
|
|
while (h-- > 0) {
|
|
for (x = 0; x < w; x++)
|
|
*cp++ = PACKW4(*wr++, *wg++, *wb++, *wa++);
|
|
SKEW4(wr, wg, wb, wa, fromskew);
|
|
cp += toskew;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* 16-bit unpacked samples => RGBA w/ unassociated alpha
|
|
*/
|
|
DECLARESepPutFunc(putRGBUAseparate16bittile)
|
|
{
|
|
uint16 *wr = (uint16*) r;
|
|
uint16 *wg = (uint16*) g;
|
|
uint16 *wb = (uint16*) b;
|
|
uint16 *wa = (uint16*) a;
|
|
|
|
(void) img; (void) y;
|
|
while (h-- > 0) {
|
|
uint32 r,g,b,a;
|
|
/*
|
|
* We shift alpha down four bits just in case unsigned
|
|
* arithmetic doesn't handle the full range.
|
|
* We still have plenty of accuracy, since the output is 8 bits.
|
|
* So we have (r * 0xffff) * (a * 0xfff)) = r*a * (0xffff*0xfff)
|
|
* Since we want r*a * 0xff for eight bit output,
|
|
* we divide by (0xffff * 0xfff) / 0xff == 0x10eff.
|
|
*/
|
|
for (x = w; x-- > 0;) {
|
|
a = *wa++ >> 4;
|
|
r = (*wr++ * a) / 0x10eff;
|
|
g = (*wg++ * a) / 0x10eff;
|
|
b = (*wb++ * a) / 0x10eff;
|
|
*cp++ = PACK4(r,g,b,a);
|
|
}
|
|
SKEW4(wr, wg, wb, wa, fromskew);
|
|
cp += toskew;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* 8-bit packed CIE L*a*b 1976 samples => RGB
|
|
*/
|
|
DECLAREContigPutFunc(putcontig8bitCIELab)
|
|
{
|
|
float X, Y, Z;
|
|
uint32 r, g, b;
|
|
(void) y;
|
|
fromskew *= 3;
|
|
while (h-- > 0) {
|
|
for (x = w; x-- > 0;) {
|
|
TIFFCIELabToXYZ(img->cielab,
|
|
(unsigned char)pp[0],
|
|
(signed char)pp[1],
|
|
(signed char)pp[2],
|
|
&X, &Y, &Z);
|
|
TIFFXYZToRGB(img->cielab, X, Y, Z, &r, &g, &b);
|
|
*cp++ = PACK(r, g, b);
|
|
pp += 3;
|
|
}
|
|
cp += toskew;
|
|
pp += fromskew;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* YCbCr -> RGB conversion and packing routines.
|
|
*/
|
|
|
|
#define YCbCrtoRGB(dst, Y) { \
|
|
uint32 r, g, b; \
|
|
TIFFYCbCrtoRGB(img->ycbcr, (Y), Cb, Cr, &r, &g, &b); \
|
|
dst = PACK(r, g, b); \
|
|
}
|
|
|
|
/*
|
|
* 8-bit packed YCbCr samples => RGB
|
|
* This function is generic for different sampling sizes,
|
|
* and can handle blocks sizes that aren't multiples of the
|
|
* sampling size. However, it is substantially less optimized
|
|
* than the specific sampling cases. It is used as a fallback
|
|
* for difficult blocks.
|
|
*/
|
|
#ifdef notdef
|
|
static void putcontig8bitYCbCrGenericTile(
|
|
TIFFRGBAImage* img,
|
|
uint32* cp,
|
|
uint32 x, uint32 y,
|
|
uint32 w, uint32 h,
|
|
int32 fromskew, int32 toskew,
|
|
unsigned char* pp,
|
|
int h_group,
|
|
int v_group )
|
|
|
|
{
|
|
uint32* cp1 = cp+w+toskew;
|
|
uint32* cp2 = cp1+w+toskew;
|
|
uint32* cp3 = cp2+w+toskew;
|
|
int32 incr = 3*w+4*toskew;
|
|
int32 Cb, Cr;
|
|
int group_size = v_group * h_group + 2;
|
|
|
|
(void) y;
|
|
fromskew = (fromskew * group_size) / h_group;
|
|
|
|
for( yy = 0; yy < h; yy++ )
|
|
{
|
|
unsigned char *pp_line;
|
|
int y_line_group = yy / v_group;
|
|
int y_remainder = yy - y_line_group * v_group;
|
|
|
|
pp_line = pp + v_line_group *
|
|
|
|
|
|
for( xx = 0; xx < w; xx++ )
|
|
{
|
|
Cb = pp
|
|
}
|
|
}
|
|
for (; h >= 4; h -= 4) {
|
|
x = w>>2;
|
|
do {
|
|
Cb = pp[16];
|
|
Cr = pp[17];
|
|
|
|
YCbCrtoRGB(cp [0], pp[ 0]);
|
|
YCbCrtoRGB(cp [1], pp[ 1]);
|
|
YCbCrtoRGB(cp [2], pp[ 2]);
|
|
YCbCrtoRGB(cp [3], pp[ 3]);
|
|
YCbCrtoRGB(cp1[0], pp[ 4]);
|
|
YCbCrtoRGB(cp1[1], pp[ 5]);
|
|
YCbCrtoRGB(cp1[2], pp[ 6]);
|
|
YCbCrtoRGB(cp1[3], pp[ 7]);
|
|
YCbCrtoRGB(cp2[0], pp[ 8]);
|
|
YCbCrtoRGB(cp2[1], pp[ 9]);
|
|
YCbCrtoRGB(cp2[2], pp[10]);
|
|
YCbCrtoRGB(cp2[3], pp[11]);
|
|
YCbCrtoRGB(cp3[0], pp[12]);
|
|
YCbCrtoRGB(cp3[1], pp[13]);
|
|
YCbCrtoRGB(cp3[2], pp[14]);
|
|
YCbCrtoRGB(cp3[3], pp[15]);
|
|
|
|
cp += 4, cp1 += 4, cp2 += 4, cp3 += 4;
|
|
pp += 18;
|
|
} while (--x);
|
|
cp += incr, cp1 += incr, cp2 += incr, cp3 += incr;
|
|
pp += fromskew;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
/*
|
|
* 8-bit packed YCbCr samples w/ 4,4 subsampling => RGB
|
|
*/
|
|
DECLAREContigPutFunc(putcontig8bitYCbCr44tile)
|
|
{
|
|
uint32* cp1 = cp+w+toskew;
|
|
uint32* cp2 = cp1+w+toskew;
|
|
uint32* cp3 = cp2+w+toskew;
|
|
int32 incr = 3*w+4*toskew;
|
|
|
|
(void) y;
|
|
/* adjust fromskew */
|
|
fromskew = (fromskew * 18) / 4;
|
|
if ((h & 3) == 0 && (w & 3) == 0) {
|
|
for (; h >= 4; h -= 4) {
|
|
x = w>>2;
|
|
do {
|
|
int32 Cb = pp[16];
|
|
int32 Cr = pp[17];
|
|
|
|
YCbCrtoRGB(cp [0], pp[ 0]);
|
|
YCbCrtoRGB(cp [1], pp[ 1]);
|
|
YCbCrtoRGB(cp [2], pp[ 2]);
|
|
YCbCrtoRGB(cp [3], pp[ 3]);
|
|
YCbCrtoRGB(cp1[0], pp[ 4]);
|
|
YCbCrtoRGB(cp1[1], pp[ 5]);
|
|
YCbCrtoRGB(cp1[2], pp[ 6]);
|
|
YCbCrtoRGB(cp1[3], pp[ 7]);
|
|
YCbCrtoRGB(cp2[0], pp[ 8]);
|
|
YCbCrtoRGB(cp2[1], pp[ 9]);
|
|
YCbCrtoRGB(cp2[2], pp[10]);
|
|
YCbCrtoRGB(cp2[3], pp[11]);
|
|
YCbCrtoRGB(cp3[0], pp[12]);
|
|
YCbCrtoRGB(cp3[1], pp[13]);
|
|
YCbCrtoRGB(cp3[2], pp[14]);
|
|
YCbCrtoRGB(cp3[3], pp[15]);
|
|
|
|
cp += 4, cp1 += 4, cp2 += 4, cp3 += 4;
|
|
pp += 18;
|
|
} while (--x);
|
|
cp += incr, cp1 += incr, cp2 += incr, cp3 += incr;
|
|
pp += fromskew;
|
|
}
|
|
} else {
|
|
while (h > 0) {
|
|
for (x = w; x > 0;) {
|
|
int32 Cb = pp[16];
|
|
int32 Cr = pp[17];
|
|
switch (x) {
|
|
default:
|
|
switch (h) {
|
|
default: YCbCrtoRGB(cp3[3], pp[15]); /* FALLTHROUGH */
|
|
case 3: YCbCrtoRGB(cp2[3], pp[11]); /* FALLTHROUGH */
|
|
case 2: YCbCrtoRGB(cp1[3], pp[ 7]); /* FALLTHROUGH */
|
|
case 1: YCbCrtoRGB(cp [3], pp[ 3]); /* FALLTHROUGH */
|
|
} /* FALLTHROUGH */
|
|
case 3:
|
|
switch (h) {
|
|
default: YCbCrtoRGB(cp3[2], pp[14]); /* FALLTHROUGH */
|
|
case 3: YCbCrtoRGB(cp2[2], pp[10]); /* FALLTHROUGH */
|
|
case 2: YCbCrtoRGB(cp1[2], pp[ 6]); /* FALLTHROUGH */
|
|
case 1: YCbCrtoRGB(cp [2], pp[ 2]); /* FALLTHROUGH */
|
|
} /* FALLTHROUGH */
|
|
case 2:
|
|
switch (h) {
|
|
default: YCbCrtoRGB(cp3[1], pp[13]); /* FALLTHROUGH */
|
|
case 3: YCbCrtoRGB(cp2[1], pp[ 9]); /* FALLTHROUGH */
|
|
case 2: YCbCrtoRGB(cp1[1], pp[ 5]); /* FALLTHROUGH */
|
|
case 1: YCbCrtoRGB(cp [1], pp[ 1]); /* FALLTHROUGH */
|
|
} /* FALLTHROUGH */
|
|
case 1:
|
|
switch (h) {
|
|
default: YCbCrtoRGB(cp3[0], pp[12]); /* FALLTHROUGH */
|
|
case 3: YCbCrtoRGB(cp2[0], pp[ 8]); /* FALLTHROUGH */
|
|
case 2: YCbCrtoRGB(cp1[0], pp[ 4]); /* FALLTHROUGH */
|
|
case 1: YCbCrtoRGB(cp [0], pp[ 0]); /* FALLTHROUGH */
|
|
} /* FALLTHROUGH */
|
|
}
|
|
if (x < 4) {
|
|
cp += x; cp1 += x; cp2 += x; cp3 += x;
|
|
x = 0;
|
|
}
|
|
else {
|
|
cp += 4; cp1 += 4; cp2 += 4; cp3 += 4;
|
|
x -= 4;
|
|
}
|
|
pp += 18;
|
|
}
|
|
if (h <= 4)
|
|
break;
|
|
h -= 4;
|
|
cp += incr, cp1 += incr, cp2 += incr, cp3 += incr;
|
|
pp += fromskew;
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* 8-bit packed YCbCr samples w/ 4,2 subsampling => RGB
|
|
*/
|
|
DECLAREContigPutFunc(putcontig8bitYCbCr42tile)
|
|
{
|
|
uint32* cp1 = cp+w+toskew;
|
|
int32 incr = 2*toskew+w;
|
|
|
|
(void) y;
|
|
fromskew = (fromskew * 10) / 4;
|
|
if ((h & 3) == 0 && (w & 1) == 0) {
|
|
for (; h >= 2; h -= 2) {
|
|
x = w>>2;
|
|
do {
|
|
int32 Cb = pp[8];
|
|
int32 Cr = pp[9];
|
|
|
|
YCbCrtoRGB(cp [0], pp[0]);
|
|
YCbCrtoRGB(cp [1], pp[1]);
|
|
YCbCrtoRGB(cp [2], pp[2]);
|
|
YCbCrtoRGB(cp [3], pp[3]);
|
|
YCbCrtoRGB(cp1[0], pp[4]);
|
|
YCbCrtoRGB(cp1[1], pp[5]);
|
|
YCbCrtoRGB(cp1[2], pp[6]);
|
|
YCbCrtoRGB(cp1[3], pp[7]);
|
|
|
|
cp += 4, cp1 += 4;
|
|
pp += 10;
|
|
} while (--x);
|
|
cp += incr, cp1 += incr;
|
|
pp += fromskew;
|
|
}
|
|
} else {
|
|
while (h > 0) {
|
|
for (x = w; x > 0;) {
|
|
int32 Cb = pp[8];
|
|
int32 Cr = pp[9];
|
|
switch (x) {
|
|
default:
|
|
switch (h) {
|
|
default: YCbCrtoRGB(cp1[3], pp[ 7]); /* FALLTHROUGH */
|
|
case 1: YCbCrtoRGB(cp [3], pp[ 3]); /* FALLTHROUGH */
|
|
} /* FALLTHROUGH */
|
|
case 3:
|
|
switch (h) {
|
|
default: YCbCrtoRGB(cp1[2], pp[ 6]); /* FALLTHROUGH */
|
|
case 1: YCbCrtoRGB(cp [2], pp[ 2]); /* FALLTHROUGH */
|
|
} /* FALLTHROUGH */
|
|
case 2:
|
|
switch (h) {
|
|
default: YCbCrtoRGB(cp1[1], pp[ 5]); /* FALLTHROUGH */
|
|
case 1: YCbCrtoRGB(cp [1], pp[ 1]); /* FALLTHROUGH */
|
|
} /* FALLTHROUGH */
|
|
case 1:
|
|
switch (h) {
|
|
default: YCbCrtoRGB(cp1[0], pp[ 4]); /* FALLTHROUGH */
|
|
case 1: YCbCrtoRGB(cp [0], pp[ 0]); /* FALLTHROUGH */
|
|
} /* FALLTHROUGH */
|
|
}
|
|
if (x < 4) {
|
|
cp += x; cp1 += x;
|
|
x = 0;
|
|
}
|
|
else {
|
|
cp += 4; cp1 += 4;
|
|
x -= 4;
|
|
}
|
|
pp += 10;
|
|
}
|
|
if (h <= 2)
|
|
break;
|
|
h -= 2;
|
|
cp += incr, cp1 += incr;
|
|
pp += fromskew;
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* 8-bit packed YCbCr samples w/ 4,1 subsampling => RGB
|
|
*/
|
|
DECLAREContigPutFunc(putcontig8bitYCbCr41tile)
|
|
{
|
|
(void) y;
|
|
/* XXX adjust fromskew */
|
|
do {
|
|
x = w>>2;
|
|
do {
|
|
int32 Cb = pp[4];
|
|
int32 Cr = pp[5];
|
|
|
|
YCbCrtoRGB(cp [0], pp[0]);
|
|
YCbCrtoRGB(cp [1], pp[1]);
|
|
YCbCrtoRGB(cp [2], pp[2]);
|
|
YCbCrtoRGB(cp [3], pp[3]);
|
|
|
|
cp += 4;
|
|
pp += 6;
|
|
} while (--x);
|
|
|
|
if( (w&3) != 0 )
|
|
{
|
|
int32 Cb = pp[4];
|
|
int32 Cr = pp[5];
|
|
|
|
switch( (w&3) ) {
|
|
case 3: YCbCrtoRGB(cp [2], pp[2]);
|
|
case 2: YCbCrtoRGB(cp [1], pp[1]);
|
|
case 1: YCbCrtoRGB(cp [0], pp[0]);
|
|
case 0: break;
|
|
}
|
|
|
|
cp += (w&3);
|
|
pp += 6;
|
|
}
|
|
|
|
cp += toskew;
|
|
pp += fromskew;
|
|
} while (--h);
|
|
|
|
}
|
|
|
|
/*
|
|
* 8-bit packed YCbCr samples w/ 2,2 subsampling => RGB
|
|
*/
|
|
DECLAREContigPutFunc(putcontig8bitYCbCr22tile)
|
|
{
|
|
uint32* cp1 = cp+w+toskew;
|
|
int32 incr = 2*toskew+w;
|
|
|
|
(void) y;
|
|
fromskew = (fromskew * 6) / 2;
|
|
if ((h & 1) == 0 && (w & 1) == 0) {
|
|
for (; h >= 2; h -= 2) {
|
|
x = w>>1;
|
|
do {
|
|
int32 Cb = pp[4];
|
|
int32 Cr = pp[5];
|
|
|
|
YCbCrtoRGB(cp [0], pp[0]);
|
|
YCbCrtoRGB(cp [1], pp[1]);
|
|
YCbCrtoRGB(cp1[0], pp[2]);
|
|
YCbCrtoRGB(cp1[1], pp[3]);
|
|
|
|
cp += 2, cp1 += 2;
|
|
pp += 6;
|
|
} while (--x);
|
|
cp += incr, cp1 += incr;
|
|
pp += fromskew;
|
|
}
|
|
} else {
|
|
while (h > 0) {
|
|
for (x = w; x > 0;) {
|
|
int32 Cb = pp[4];
|
|
int32 Cr = pp[5];
|
|
switch (x) {
|
|
default:
|
|
switch (h) {
|
|
default: YCbCrtoRGB(cp1[1], pp[ 3]); /* FALLTHROUGH */
|
|
case 1: YCbCrtoRGB(cp [1], pp[ 1]); /* FALLTHROUGH */
|
|
} /* FALLTHROUGH */
|
|
case 1:
|
|
switch (h) {
|
|
default: YCbCrtoRGB(cp1[0], pp[ 2]); /* FALLTHROUGH */
|
|
case 1: YCbCrtoRGB(cp [0], pp[ 0]); /* FALLTHROUGH */
|
|
} /* FALLTHROUGH */
|
|
}
|
|
if (x < 2) {
|
|
cp += x; cp1 += x;
|
|
x = 0;
|
|
}
|
|
else {
|
|
cp += 2; cp1 += 2;
|
|
x -= 2;
|
|
}
|
|
pp += 6;
|
|
}
|
|
if (h <= 2)
|
|
break;
|
|
h -= 2;
|
|
cp += incr, cp1 += incr;
|
|
pp += fromskew;
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* 8-bit packed YCbCr samples w/ 2,1 subsampling => RGB
|
|
*/
|
|
DECLAREContigPutFunc(putcontig8bitYCbCr21tile)
|
|
{
|
|
(void) y;
|
|
fromskew = (fromskew * 4) / 2;
|
|
do {
|
|
x = w>>1;
|
|
do {
|
|
int32 Cb = pp[2];
|
|
int32 Cr = pp[3];
|
|
|
|
YCbCrtoRGB(cp[0], pp[0]);
|
|
YCbCrtoRGB(cp[1], pp[1]);
|
|
|
|
cp += 2;
|
|
pp += 4;
|
|
} while (--x);
|
|
|
|
if( (w&1) != 0 )
|
|
{
|
|
int32 Cb = pp[2];
|
|
int32 Cr = pp[3];
|
|
|
|
YCbCrtoRGB(cp [0], pp[0]);
|
|
|
|
cp += 1;
|
|
pp += 4;
|
|
}
|
|
|
|
cp += toskew;
|
|
pp += fromskew;
|
|
} while (--h);
|
|
}
|
|
|
|
/*
|
|
* 8-bit packed YCbCr samples w/ no subsampling => RGB
|
|
*/
|
|
DECLAREContigPutFunc(putcontig8bitYCbCr11tile)
|
|
{
|
|
(void) y;
|
|
fromskew *= 3;
|
|
do {
|
|
x = w; /* was x = w>>1; patched 2000/09/25 warmerda@home.com */
|
|
do {
|
|
int32 Cb = pp[1];
|
|
int32 Cr = pp[2];
|
|
|
|
YCbCrtoRGB(*cp++, pp[0]);
|
|
|
|
pp += 3;
|
|
} while (--x);
|
|
cp += toskew;
|
|
pp += fromskew;
|
|
} while (--h);
|
|
}
|
|
#undef YCbCrtoRGB
|
|
|
|
static tileContigRoutine
|
|
initYCbCrConversion(TIFFRGBAImage* img)
|
|
{
|
|
static char module[] = "initCIELabConversion";
|
|
|
|
float *luma, *refBlackWhite;
|
|
uint16 hs, vs;
|
|
|
|
if (img->ycbcr == NULL) {
|
|
img->ycbcr = (TIFFYCbCrToRGB*) _TIFFmalloc(
|
|
TIFFroundup(sizeof (TIFFYCbCrToRGB), sizeof (long))
|
|
+ 4*256*sizeof (TIFFRGBValue)
|
|
+ 2*256*sizeof (int)
|
|
+ 3*256*sizeof (int32)
|
|
);
|
|
if (img->ycbcr == NULL) {
|
|
TIFFError(module,
|
|
"No space for YCbCr->RGB conversion state");
|
|
return (NULL);
|
|
}
|
|
}
|
|
|
|
TIFFGetFieldDefaulted(img->tif, TIFFTAG_YCBCRCOEFFICIENTS, &luma);
|
|
TIFFGetFieldDefaulted(img->tif, TIFFTAG_REFERENCEBLACKWHITE,
|
|
&refBlackWhite);
|
|
if (TIFFYCbCrToRGBInit(img->ycbcr, luma, refBlackWhite) < 0)
|
|
return NULL;
|
|
|
|
/*
|
|
* The 6.0 spec says that subsampling must be
|
|
* one of 1, 2, or 4, and that vertical subsampling
|
|
* must always be <= horizontal subsampling; so
|
|
* there are only a few possibilities and we just
|
|
* enumerate the cases.
|
|
*/
|
|
TIFFGetFieldDefaulted(img->tif, TIFFTAG_YCBCRSUBSAMPLING, &hs, &vs);
|
|
switch ((hs<<4)|vs) {
|
|
case 0x44: return (putcontig8bitYCbCr44tile);
|
|
case 0x42: return (putcontig8bitYCbCr42tile);
|
|
case 0x41: return (putcontig8bitYCbCr41tile);
|
|
case 0x22: return (putcontig8bitYCbCr22tile);
|
|
case 0x21: return (putcontig8bitYCbCr21tile);
|
|
case 0x11: return (putcontig8bitYCbCr11tile);
|
|
}
|
|
|
|
return (NULL);
|
|
}
|
|
|
|
static tileContigRoutine
|
|
initCIELabConversion(TIFFRGBAImage* img)
|
|
{
|
|
static char module[] = "initCIELabConversion";
|
|
|
|
float *whitePoint;
|
|
float refWhite[3];
|
|
|
|
if (!img->cielab) {
|
|
img->cielab = (TIFFCIELabToRGB *)
|
|
_TIFFmalloc(sizeof(TIFFCIELabToRGB));
|
|
if (!img->cielab) {
|
|
TIFFError(module,
|
|
"No space for CIE L*a*b*->RGB conversion state.");
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
TIFFGetFieldDefaulted(img->tif, TIFFTAG_WHITEPOINT, &whitePoint);
|
|
refWhite[1] = 100.0F;
|
|
refWhite[0] = whitePoint[0] / whitePoint[1] * refWhite[1];
|
|
refWhite[2] = (1.0F - whitePoint[0] - whitePoint[1])
|
|
/ whitePoint[1] * refWhite[1];
|
|
if (TIFFCIELabToRGBInit(img->cielab, &display_sRGB, refWhite) < 0) {
|
|
TIFFError(module,
|
|
"Failed to initialize CIE L*a*b*->RGB conversion state.");
|
|
_TIFFfree(img->cielab);
|
|
return NULL;
|
|
}
|
|
|
|
return putcontig8bitCIELab;
|
|
}
|
|
|
|
/*
|
|
* Greyscale images with less than 8 bits/sample are handled
|
|
* with a table to avoid lots of shifts and masks. The table
|
|
* is setup so that put*bwtile (below) can retrieve 8/bitspersample
|
|
* pixel values simply by indexing into the table with one
|
|
* number.
|
|
*/
|
|
static int
|
|
makebwmap(TIFFRGBAImage* img)
|
|
{
|
|
TIFFRGBValue* Map = img->Map;
|
|
int bitspersample = img->bitspersample;
|
|
int nsamples = 8 / bitspersample;
|
|
int i;
|
|
uint32* p;
|
|
|
|
if( nsamples == 0 )
|
|
nsamples = 1;
|
|
|
|
img->BWmap = (uint32**) _TIFFmalloc(
|
|
256*sizeof (uint32 *)+(256*nsamples*sizeof(uint32)));
|
|
if (img->BWmap == NULL) {
|
|
TIFFError(TIFFFileName(img->tif), "No space for B&W mapping table");
|
|
return (0);
|
|
}
|
|
p = (uint32*)(img->BWmap + 256);
|
|
for (i = 0; i < 256; i++) {
|
|
TIFFRGBValue c;
|
|
img->BWmap[i] = p;
|
|
switch (bitspersample) {
|
|
#define GREY(x) c = Map[x]; *p++ = PACK(c,c,c);
|
|
case 1:
|
|
GREY(i>>7);
|
|
GREY((i>>6)&1);
|
|
GREY((i>>5)&1);
|
|
GREY((i>>4)&1);
|
|
GREY((i>>3)&1);
|
|
GREY((i>>2)&1);
|
|
GREY((i>>1)&1);
|
|
GREY(i&1);
|
|
break;
|
|
case 2:
|
|
GREY(i>>6);
|
|
GREY((i>>4)&3);
|
|
GREY((i>>2)&3);
|
|
GREY(i&3);
|
|
break;
|
|
case 4:
|
|
GREY(i>>4);
|
|
GREY(i&0xf);
|
|
break;
|
|
case 8:
|
|
case 16:
|
|
GREY(i);
|
|
break;
|
|
}
|
|
#undef GREY
|
|
}
|
|
return (1);
|
|
}
|
|
|
|
/*
|
|
* Construct a mapping table to convert from the range
|
|
* of the data samples to [0,255] --for display. This
|
|
* process also handles inverting B&W images when needed.
|
|
*/
|
|
static int
|
|
setupMap(TIFFRGBAImage* img)
|
|
{
|
|
int32 x, range;
|
|
|
|
range = (int32)((1L<<img->bitspersample)-1);
|
|
|
|
/* treat 16 bit the same as eight bit */
|
|
if( img->bitspersample == 16 )
|
|
range = (int32) 255;
|
|
|
|
img->Map = (TIFFRGBValue*) _TIFFmalloc((range+1) * sizeof (TIFFRGBValue));
|
|
if (img->Map == NULL) {
|
|
TIFFError(TIFFFileName(img->tif),
|
|
"No space for photometric conversion table");
|
|
return (0);
|
|
}
|
|
if (img->photometric == PHOTOMETRIC_MINISWHITE) {
|
|
for (x = 0; x <= range; x++)
|
|
img->Map[x] = (TIFFRGBValue) (((range - x) * 255) / range);
|
|
} else {
|
|
for (x = 0; x <= range; x++)
|
|
img->Map[x] = (TIFFRGBValue) ((x * 255) / range);
|
|
}
|
|
if (img->bitspersample <= 16 &&
|
|
(img->photometric == PHOTOMETRIC_MINISBLACK ||
|
|
img->photometric == PHOTOMETRIC_MINISWHITE)) {
|
|
/*
|
|
* Use photometric mapping table to construct
|
|
* unpacking tables for samples <= 8 bits.
|
|
*/
|
|
if (!makebwmap(img))
|
|
return (0);
|
|
/* no longer need Map, free it */
|
|
_TIFFfree(img->Map), img->Map = NULL;
|
|
}
|
|
return (1);
|
|
}
|
|
|
|
static int
|
|
checkcmap(TIFFRGBAImage* img)
|
|
{
|
|
uint16* r = img->redcmap;
|
|
uint16* g = img->greencmap;
|
|
uint16* b = img->bluecmap;
|
|
long n = 1L<<img->bitspersample;
|
|
|
|
while (n-- > 0)
|
|
if (*r++ >= 256 || *g++ >= 256 || *b++ >= 256)
|
|
return (16);
|
|
return (8);
|
|
}
|
|
|
|
static void
|
|
cvtcmap(TIFFRGBAImage* img)
|
|
{
|
|
uint16* r = img->redcmap;
|
|
uint16* g = img->greencmap;
|
|
uint16* b = img->bluecmap;
|
|
long i;
|
|
|
|
for (i = (1L<<img->bitspersample)-1; i >= 0; i--) {
|
|
#define CVT(x) ((uint16)((x)>>8))
|
|
r[i] = CVT(r[i]);
|
|
g[i] = CVT(g[i]);
|
|
b[i] = CVT(b[i]);
|
|
#undef CVT
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Palette images with <= 8 bits/sample are handled
|
|
* with a table to avoid lots of shifts and masks. The table
|
|
* is setup so that put*cmaptile (below) can retrieve 8/bitspersample
|
|
* pixel values simply by indexing into the table with one
|
|
* number.
|
|
*/
|
|
static int
|
|
makecmap(TIFFRGBAImage* img)
|
|
{
|
|
int bitspersample = img->bitspersample;
|
|
int nsamples = 8 / bitspersample;
|
|
uint16* r = img->redcmap;
|
|
uint16* g = img->greencmap;
|
|
uint16* b = img->bluecmap;
|
|
uint32 *p;
|
|
int i;
|
|
|
|
img->PALmap = (uint32**) _TIFFmalloc(
|
|
256*sizeof (uint32 *)+(256*nsamples*sizeof(uint32)));
|
|
if (img->PALmap == NULL) {
|
|
TIFFError(TIFFFileName(img->tif), "No space for Palette mapping table");
|
|
return (0);
|
|
}
|
|
p = (uint32*)(img->PALmap + 256);
|
|
for (i = 0; i < 256; i++) {
|
|
TIFFRGBValue c;
|
|
img->PALmap[i] = p;
|
|
#define CMAP(x) c = (TIFFRGBValue) x; *p++ = PACK(r[c]&0xff, g[c]&0xff, b[c]&0xff);
|
|
switch (bitspersample) {
|
|
case 1:
|
|
CMAP(i>>7);
|
|
CMAP((i>>6)&1);
|
|
CMAP((i>>5)&1);
|
|
CMAP((i>>4)&1);
|
|
CMAP((i>>3)&1);
|
|
CMAP((i>>2)&1);
|
|
CMAP((i>>1)&1);
|
|
CMAP(i&1);
|
|
break;
|
|
case 2:
|
|
CMAP(i>>6);
|
|
CMAP((i>>4)&3);
|
|
CMAP((i>>2)&3);
|
|
CMAP(i&3);
|
|
break;
|
|
case 4:
|
|
CMAP(i>>4);
|
|
CMAP(i&0xf);
|
|
break;
|
|
case 8:
|
|
CMAP(i);
|
|
break;
|
|
}
|
|
#undef CMAP
|
|
}
|
|
return (1);
|
|
}
|
|
|
|
/*
|
|
* Construct any mapping table used
|
|
* by the associated put routine.
|
|
*/
|
|
static int
|
|
buildMap(TIFFRGBAImage* img)
|
|
{
|
|
switch (img->photometric) {
|
|
case PHOTOMETRIC_RGB:
|
|
case PHOTOMETRIC_YCBCR:
|
|
case PHOTOMETRIC_SEPARATED:
|
|
if (img->bitspersample == 8)
|
|
break;
|
|
/* fall thru... */
|
|
case PHOTOMETRIC_MINISBLACK:
|
|
case PHOTOMETRIC_MINISWHITE:
|
|
if (!setupMap(img))
|
|
return (0);
|
|
break;
|
|
case PHOTOMETRIC_PALETTE:
|
|
/*
|
|
* Convert 16-bit colormap to 8-bit (unless it looks
|
|
* like an old-style 8-bit colormap).
|
|
*/
|
|
if (checkcmap(img) == 16)
|
|
cvtcmap(img);
|
|
else
|
|
TIFFWarning(TIFFFileName(img->tif), "Assuming 8-bit colormap");
|
|
/*
|
|
* Use mapping table and colormap to construct
|
|
* unpacking tables for samples < 8 bits.
|
|
*/
|
|
if (img->bitspersample <= 8 && !makecmap(img))
|
|
return (0);
|
|
break;
|
|
}
|
|
return (1);
|
|
}
|
|
|
|
/*
|
|
* Select the appropriate conversion routine for packed data.
|
|
*/
|
|
static int
|
|
pickTileContigCase(TIFFRGBAImage* img)
|
|
{
|
|
tileContigRoutine put = 0;
|
|
|
|
if (buildMap(img)) {
|
|
switch (img->photometric) {
|
|
case PHOTOMETRIC_RGB:
|
|
switch (img->bitspersample) {
|
|
case 8:
|
|
if (!img->Map) {
|
|
if (img->alpha == EXTRASAMPLE_ASSOCALPHA)
|
|
put = putRGBAAcontig8bittile;
|
|
else if (img->alpha == EXTRASAMPLE_UNASSALPHA)
|
|
put = putRGBUAcontig8bittile;
|
|
else
|
|
put = putRGBcontig8bittile;
|
|
} else
|
|
put = putRGBcontig8bitMaptile;
|
|
break;
|
|
case 16:
|
|
put = putRGBcontig16bittile;
|
|
if (!img->Map) {
|
|
if (img->alpha == EXTRASAMPLE_ASSOCALPHA)
|
|
put = putRGBAAcontig16bittile;
|
|
else if (img->alpha == EXTRASAMPLE_UNASSALPHA)
|
|
put = putRGBUAcontig16bittile;
|
|
}
|
|
break;
|
|
}
|
|
break;
|
|
case PHOTOMETRIC_SEPARATED:
|
|
if (img->bitspersample == 8) {
|
|
if (!img->Map)
|
|
put = putRGBcontig8bitCMYKtile;
|
|
else
|
|
put = putRGBcontig8bitCMYKMaptile;
|
|
}
|
|
break;
|
|
case PHOTOMETRIC_PALETTE:
|
|
switch (img->bitspersample) {
|
|
case 8: put = put8bitcmaptile; break;
|
|
case 4: put = put4bitcmaptile; break;
|
|
case 2: put = put2bitcmaptile; break;
|
|
case 1: put = put1bitcmaptile; break;
|
|
}
|
|
break;
|
|
case PHOTOMETRIC_MINISWHITE:
|
|
case PHOTOMETRIC_MINISBLACK:
|
|
switch (img->bitspersample) {
|
|
case 16: put = put16bitbwtile; break;
|
|
case 8: put = putgreytile; break;
|
|
case 4: put = put4bitbwtile; break;
|
|
case 2: put = put2bitbwtile; break;
|
|
case 1: put = put1bitbwtile; break;
|
|
}
|
|
break;
|
|
case PHOTOMETRIC_YCBCR:
|
|
if (img->bitspersample == 8)
|
|
put = initYCbCrConversion(img);
|
|
break;
|
|
case PHOTOMETRIC_CIELAB:
|
|
if (img->bitspersample == 8)
|
|
put = initCIELabConversion(img);
|
|
break;
|
|
}
|
|
}
|
|
return ((img->put.contig = put) != 0);
|
|
}
|
|
|
|
/*
|
|
* Select the appropriate conversion routine for unpacked data.
|
|
*
|
|
* NB: we assume that unpacked single channel data is directed
|
|
* to the "packed routines.
|
|
*/
|
|
static int
|
|
pickTileSeparateCase(TIFFRGBAImage* img)
|
|
{
|
|
tileSeparateRoutine put = 0;
|
|
|
|
if (buildMap(img)) {
|
|
switch (img->photometric) {
|
|
case PHOTOMETRIC_RGB:
|
|
switch (img->bitspersample) {
|
|
case 8:
|
|
if (!img->Map) {
|
|
if (img->alpha == EXTRASAMPLE_ASSOCALPHA)
|
|
put = putRGBAAseparate8bittile;
|
|
else if (img->alpha == EXTRASAMPLE_UNASSALPHA)
|
|
put = putRGBUAseparate8bittile;
|
|
else
|
|
put = putRGBseparate8bittile;
|
|
} else
|
|
put = putRGBseparate8bitMaptile;
|
|
break;
|
|
case 16:
|
|
put = putRGBseparate16bittile;
|
|
if (!img->Map) {
|
|
if (img->alpha == EXTRASAMPLE_ASSOCALPHA)
|
|
put = putRGBAAseparate16bittile;
|
|
else if (img->alpha == EXTRASAMPLE_UNASSALPHA)
|
|
put = putRGBUAseparate16bittile;
|
|
}
|
|
break;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
return ((img->put.separate = put) != 0);
|
|
}
|
|
|
|
/*
|
|
* Read a whole strip off data from the file, and convert to RGBA form.
|
|
* If this is the last strip, then it will only contain the portion of
|
|
* the strip that is actually within the image space. The result is
|
|
* organized in bottom to top form.
|
|
*/
|
|
|
|
|
|
int
|
|
TIFFReadRGBAStrip(TIFF* tif, uint32 row, uint32 * raster )
|
|
|
|
{
|
|
char emsg[1024] = "";
|
|
TIFFRGBAImage img;
|
|
int ok;
|
|
uint32 rowsperstrip, rows_to_read;
|
|
|
|
if( TIFFIsTiled( tif ) )
|
|
{
|
|
TIFFError(TIFFFileName(tif),
|
|
"Can't use TIFFReadRGBAStrip() with tiled file.");
|
|
return (0);
|
|
}
|
|
|
|
TIFFGetFieldDefaulted(tif, TIFFTAG_ROWSPERSTRIP, &rowsperstrip);
|
|
if( (row % rowsperstrip) != 0 )
|
|
{
|
|
TIFFError(TIFFFileName(tif),
|
|
"Row passed to TIFFReadRGBAStrip() must be first in a strip.");
|
|
return (0);
|
|
}
|
|
|
|
if (TIFFRGBAImageOK(tif, emsg) && TIFFRGBAImageBegin(&img, tif, 0, emsg)) {
|
|
|
|
img.row_offset = row;
|
|
img.col_offset = 0;
|
|
|
|
if( row + rowsperstrip > img.height )
|
|
rows_to_read = img.height - row;
|
|
else
|
|
rows_to_read = rowsperstrip;
|
|
|
|
ok = TIFFRGBAImageGet(&img, raster, img.width, rows_to_read );
|
|
|
|
TIFFRGBAImageEnd(&img);
|
|
} else {
|
|
TIFFError(TIFFFileName(tif), emsg);
|
|
ok = 0;
|
|
}
|
|
|
|
return (ok);
|
|
}
|
|
|
|
/*
|
|
* Read a whole tile off data from the file, and convert to RGBA form.
|
|
* The returned RGBA data is organized from bottom to top of tile,
|
|
* and may include zeroed areas if the tile extends off the image.
|
|
*/
|
|
|
|
int
|
|
TIFFReadRGBATile(TIFF* tif, uint32 col, uint32 row, uint32 * raster)
|
|
|
|
{
|
|
char emsg[1024] = "";
|
|
TIFFRGBAImage img;
|
|
int ok;
|
|
uint32 tile_xsize, tile_ysize;
|
|
uint32 read_xsize, read_ysize;
|
|
uint32 i_row;
|
|
|
|
/*
|
|
* Verify that our request is legal - on a tile file, and on a
|
|
* tile boundary.
|
|
*/
|
|
|
|
if( !TIFFIsTiled( tif ) )
|
|
{
|
|
TIFFError(TIFFFileName(tif),
|
|
"Can't use TIFFReadRGBATile() with stripped file.");
|
|
return (0);
|
|
}
|
|
|
|
TIFFGetFieldDefaulted(tif, TIFFTAG_TILEWIDTH, &tile_xsize);
|
|
TIFFGetFieldDefaulted(tif, TIFFTAG_TILELENGTH, &tile_ysize);
|
|
if( (col % tile_xsize) != 0 || (row % tile_ysize) != 0 )
|
|
{
|
|
TIFFError(TIFFFileName(tif),
|
|
"Row/col passed to TIFFReadRGBATile() must be top"
|
|
"left corner of a tile.");
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Setup the RGBA reader.
|
|
*/
|
|
|
|
if (!TIFFRGBAImageOK(tif, emsg)
|
|
|| !TIFFRGBAImageBegin(&img, tif, 0, emsg)) {
|
|
TIFFError(TIFFFileName(tif), emsg);
|
|
return( 0 );
|
|
}
|
|
|
|
/*
|
|
* The TIFFRGBAImageGet() function doesn't allow us to get off the
|
|
* edge of the image, even to fill an otherwise valid tile. So we
|
|
* figure out how much we can read, and fix up the tile buffer to
|
|
* a full tile configuration afterwards.
|
|
*/
|
|
|
|
if( row + tile_ysize > img.height )
|
|
read_ysize = img.height - row;
|
|
else
|
|
read_ysize = tile_ysize;
|
|
|
|
if( col + tile_xsize > img.width )
|
|
read_xsize = img.width - col;
|
|
else
|
|
read_xsize = tile_xsize;
|
|
|
|
/*
|
|
* Read the chunk of imagery.
|
|
*/
|
|
|
|
img.row_offset = row;
|
|
img.col_offset = col;
|
|
|
|
ok = TIFFRGBAImageGet(&img, raster, read_xsize, read_ysize );
|
|
|
|
TIFFRGBAImageEnd(&img);
|
|
|
|
/*
|
|
* If our read was incomplete we will need to fix up the tile by
|
|
* shifting the data around as if a full tile of data is being returned.
|
|
*
|
|
* This is all the more complicated because the image is organized in
|
|
* bottom to top format.
|
|
*/
|
|
|
|
if( read_xsize == tile_xsize && read_ysize == tile_ysize )
|
|
return( ok );
|
|
|
|
for( i_row = 0; i_row < read_ysize; i_row++ ) {
|
|
memmove( raster + (tile_ysize - i_row - 1) * tile_xsize,
|
|
raster + (read_ysize - i_row - 1) * read_xsize,
|
|
read_xsize * sizeof(uint32) );
|
|
_TIFFmemset( raster + (tile_ysize - i_row - 1) * tile_xsize+read_xsize,
|
|
0, sizeof(uint32) * (tile_xsize - read_xsize) );
|
|
}
|
|
|
|
for( i_row = read_ysize; i_row < tile_ysize; i_row++ ) {
|
|
_TIFFmemset( raster + (tile_ysize - i_row - 1) * tile_xsize,
|
|
0, sizeof(uint32) * tile_xsize );
|
|
}
|
|
|
|
return (ok);
|
|
}
|
|
|
|
/* vim: set ts=8 sts=8 sw=8 noet: */
|