summaryrefslogtreecommitdiff
path: root/tiff/contrib/pds/tif_imageiter.c
diff options
context:
space:
mode:
Diffstat (limited to 'tiff/contrib/pds/tif_imageiter.c')
-rw-r--r--tiff/contrib/pds/tif_imageiter.c525
1 files changed, 0 insertions, 525 deletions
diff --git a/tiff/contrib/pds/tif_imageiter.c b/tiff/contrib/pds/tif_imageiter.c
deleted file mode 100644
index 6140f96..0000000
--- a/tiff/contrib/pds/tif_imageiter.c
+++ /dev/null
@@ -1,525 +0,0 @@
-/* $Header: /cvs/maptools/cvsroot/libtiff/contrib/pds/tif_imageiter.c,v 1.3.2.1 2010-06-08 18:50:41 bfriesen Exp $ */
-
-/*
- * Copyright (c) 1991-1996 Sam Leffler
- * Copyright (c) 1991-1996 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
- *
- * Written by Conrad J. Poelman, PL/WSAT, Kirtland AFB, NM on 26 Mar 96.
- *
- * This file contains code to allow a calling program to "iterate" over each
- * pixels in an image as it is read from the file. The iterator takes care of
- * reading strips versus (possibly clipped) tiles, decoding the information
- * according to the decoding method, and so on, so that calling program can
- * ignore those details. The calling program does, however, need to be
- * conscious of the type of the pixel data that it is receiving.
- *
- * For reasons of efficiency, the callback function actually gets called for
- * "blocks" of pixels rather than for individual pixels. The format of the
- * callback arguments is given below.
- *
- * This code was taken from TIFFReadRGBAImage() in tif_getimage.c of the original
- * TIFF distribution, and simplified and generalized to provide this general
- * iteration capability. Those routines could certainly be re-implemented in terms
- * of a TIFFImageIter if desired.
- *
- */
-#include "tiffiop.h"
-#include "tif_imageiter.h"
-#include <assert.h>
-#include <stdio.h>
-
-static int gtTileContig(TIFFImageIter*, void *udata, uint32, uint32);
-static int gtTileSeparate(TIFFImageIter*, void *udata, uint32, uint32);
-static int gtStripContig(TIFFImageIter*, void *udata, uint32, uint32);
-static int gtStripSeparate(TIFFImageIter*, void *udata, uint32, uint32);
-
-static const char photoTag[] = "PhotometricInterpretation";
-
-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
-TIFFImageIterBegin(TIFFImageIter* img, TIFF* tif, int stop, char emsg[1024])
-{
- uint16* sampleinfo;
- uint16 extrasamples;
- uint16 planarconfig;
- int colorchannels;
-
- img->tif = tif;
- img->stoponerr = stop;
- TIFFGetFieldDefaulted(tif, TIFFTAG_BITSPERSAMPLE, &img->bitspersample);
- 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_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,
- &img->redcmap, &img->greencmap, &img->bluecmap)) {
- TIFFErrorExt(tif->tif_clientdata, TIFFFileName(tif), "Missing required \"Colormap\" tag");
- return (0);
- }
- /* fall thru... */
- case PHOTOMETRIC_MINISWHITE:
- case PHOTOMETRIC_MINISBLACK:
-/* This should work now so skip the check - BSR
- if (planarconfig == PLANARCONFIG_CONTIG && img->samplesperpixel != 1) {
- sprintf(emsg,
- "Sorry, can not handle contiguous data with %s=%d, and %s=%d",
- photoTag, img->photometric,
- "Samples/pixel", img->samplesperpixel);
- return (0);
- }
- */
- break;
- case PHOTOMETRIC_YCBCR:
- if (planarconfig != PLANARCONFIG_CONTIG) {
- sprintf(emsg, "Sorry, can not handle YCbCr images with %s=%d",
- "Planarconfiguration", planarconfig);
- return (0);
- }
- /* It would probably be nice to have a reality check here. */
- { uint16 compress;
- TIFFGetField(tif, TIFFTAG_COMPRESSION, &compress);
- if (compress == COMPRESSION_JPEG && planarconfig == PLANARCONFIG_CONTIG) {
- /* can rely on libjpeg to convert to RGB */
- /* XXX should restore current state on exit */
- TIFFSetField(tif, TIFFTAG_JPEGCOLORMODE, JPEGCOLORMODE_RGB);
- img->photometric = PHOTOMETRIC_RGB;
- }
- }
- break;
- case PHOTOMETRIC_RGB:
- if (colorchannels < 3) {
- sprintf(emsg, "Sorry, can not handle RGB image with %s=%d",
- "Color channels", colorchannels);
- return (0);
- }
- break;
- case PHOTOMETRIC_SEPARATED: {
- uint16 inkset;
- TIFFGetFieldDefaulted(tif, TIFFTAG_INKSET, &inkset);
- if (inkset != INKSET_CMYK) {
- sprintf(emsg, "Sorry, can not handle separated image with %s=%d",
- "InkSet", inkset);
- return (0);
- }
- if (img->samplesperpixel != 4) {
- sprintf(emsg, "Sorry, can not handle separated image with %s=%d",
- "Samples/pixel", img->samplesperpixel);
- return (0);
- }
- break;
- }
- default:
- sprintf(emsg, "Sorry, can not handle image with %s=%d",
- photoTag, img->photometric);
- return (0);
- }
- TIFFGetField(tif, TIFFTAG_IMAGEWIDTH, &img->width);
- TIFFGetField(tif, TIFFTAG_IMAGELENGTH, &img->height);
-
- TIFFGetFieldDefaulted(tif, TIFFTAG_ORIENTATION, &img->orientation);
- switch (img->orientation) {
- case ORIENTATION_BOTRIGHT:
- case ORIENTATION_RIGHTBOT: /* XXX */
- case ORIENTATION_LEFTBOT: /* XXX */
- TIFFWarning(TIFFFileName(tif), "using bottom-left orientation");
- img->orientation = ORIENTATION_BOTLEFT;
- /* fall thru... */
- case ORIENTATION_BOTLEFT:
- break;
- case ORIENTATION_TOPRIGHT:
- case ORIENTATION_RIGHTTOP: /* XXX */
- case ORIENTATION_LEFTTOP: /* XXX */
- default:
- TIFFWarning(TIFFFileName(tif), "using top-left orientation");
- img->orientation = ORIENTATION_TOPLEFT;
- /* fall thru... */
- case ORIENTATION_TOPLEFT:
- break;
- }
-
- img->isContig =
- !(planarconfig == PLANARCONFIG_SEPARATE && colorchannels > 1);
- if (img->isContig) {
- img->get = TIFFIsTiled(tif) ? gtTileContig : gtStripContig;
- } else {
- img->get = TIFFIsTiled(tif) ? gtTileSeparate : gtStripSeparate;
- }
- return (1);
-}
-
-int
-TIFFImageIterGet(TIFFImageIter* img, void *udata, uint32 w, uint32 h)
-{
- if (img->get == NULL) {
- TIFFErrorExt(img->tif->tif_clientdata, TIFFFileName(img->tif), "No \"get\" routine setup");
- return (0);
- }
- if (img->callback.any == NULL) {
- TIFFErrorExt(img->tif->tif_clientdata, TIFFFileName(img->tif),
- "No \"put\" routine setupl; probably can not handle image format");
- return (0);
- }
- return (*img->get)(img, udata, w, h);
-}
-
-TIFFImageIterEnd(TIFFImageIter* img)
-{
- /* Nothing to free... ? */
-}
-
-/*
- * Read the specified image into an ABGR-format raster.
- */
-int
-TIFFReadImageIter(TIFF* tif,
- uint32 rwidth, uint32 rheight, uint8* raster, int stop)
-{
- char emsg[1024];
- TIFFImageIter img;
- int ok;
-
- if (TIFFImageIterBegin(&img, tif, stop, emsg)) {
- /* XXX verify rwidth and rheight against width and height */
- ok = TIFFImageIterGet(&img, raster, rwidth, img.height);
- TIFFImageIterEnd(&img);
- } else {
- TIFFErrorExt(tif->tif_clientdata, TIFFFileName(tif), emsg);
- ok = 0;
- }
- return (ok);
-}
-
-
-/*
- * Get an tile-organized image that has
- * PlanarConfiguration contiguous if SamplesPerPixel > 1
- * or
- * SamplesPerPixel == 1
- */
-static int
-gtTileContig(TIFFImageIter* img, void *udata, uint32 w, uint32 h)
-{
- TIFF* tif = img->tif;
- ImageIterTileContigRoutine callback = img->callback.contig;
- uint16 orientation;
- uint32 col, row;
- uint32 tw, th;
- u_char* buf;
- int32 fromskew;
- uint32 nrow;
-
- buf = (u_char*) _TIFFmalloc(TIFFTileSize(tif));
- if (buf == 0) {
- TIFFErrorExt(tif->tif_clientdata, TIFFFileName(tif), "No space for tile buffer");
- return (0);
- }
- TIFFGetField(tif, TIFFTAG_TILEWIDTH, &tw);
- TIFFGetField(tif, TIFFTAG_TILELENGTH, &th);
- orientation = img->orientation;
- for (row = 0; row < h; row += th) {
- nrow = (row + th > h ? h - row : th);
- for (col = 0; col < w; col += tw) {
- if (TIFFReadTile(tif, buf, col, row, 0, 0) < 0 && img->stoponerr)
- break;
- if (col + tw > w) {
- /*
- * Tile is clipped horizontally. Calculate
- * visible portion and skewing factors.
- */
- uint32 npix = w - col;
- fromskew = tw - npix;
- (*callback)(img, udata, col, row, npix, nrow, fromskew, buf);
- } else {
- (*callback)(img, udata, col, row, tw, nrow, 0, buf);
- }
- }
- }
- _TIFFfree(buf);
- return (1);
-}
-
-/*
- * Get an tile-organized image that has
- * SamplesPerPixel > 1
- * PlanarConfiguration separated
- * We assume that all such images are RGB.
- */
-static int
-gtTileSeparate(TIFFImageIter* img, void *udata, uint32 w, uint32 h)
-{
- TIFF* tif = img->tif;
- ImageIterTileSeparateRoutine callback = img->callback.separate;
- uint16 orientation;
- uint32 col, row;
- uint32 tw, th;
- u_char* buf;
- u_char* r;
- u_char* g;
- u_char* b;
- u_char* a;
- tsize_t tilesize;
- int32 fromskew;
- int alpha = img->alpha;
- uint32 nrow;
-
- tilesize = TIFFTileSize(tif);
- buf = (u_char*) _TIFFmalloc(4*tilesize);
- if (buf == 0) {
- TIFFErrorExt(tif->tif_clientdata, TIFFFileName(tif), "No space for tile buffer");
- return (0);
- }
- r = buf;
- g = r + tilesize;
- b = g + tilesize;
- a = b + tilesize;
- if (!alpha)
- memset(a, 0xff, tilesize);
- TIFFGetField(tif, TIFFTAG_TILEWIDTH, &tw);
- TIFFGetField(tif, TIFFTAG_TILELENGTH, &th);
- orientation = img->orientation;
- for (row = 0; row < h; row += th) {
- nrow = (row + th > h ? h - row : th);
- for (col = 0; col < w; col += tw) {
- if (TIFFReadTile(tif, r, col, row,0,0) < 0 && img->stoponerr)
- break;
- if (TIFFReadTile(tif, g, col, row,0,1) < 0 && img->stoponerr)
- break;
- if (TIFFReadTile(tif, b, col, row,0,2) < 0 && img->stoponerr)
- break;
- if (alpha && TIFFReadTile(tif,a,col,row,0,3) < 0 && img->stoponerr)
- break;
- if (col + tw > w) {
- /*
- * Tile is clipped horizontally. Calculate
- * visible portion and skewing factors.
- */
- uint32 npix = w - col;
- fromskew = tw - npix;
- (*callback)(img, udata, col, row, npix, nrow, fromskew, r, g, b, a);
- } else {
- (*callback)(img, udata, col, row, tw, nrow, 0, r, g, b, a);
- }
- }
- }
- _TIFFfree(buf);
- return (1);
-}
-
-/*
- * Get a strip-organized image that has
- * PlanarConfiguration contiguous if SamplesPerPixel > 1
- * or
- * SamplesPerPixel == 1
- */
-static int
-gtStripContig(TIFFImageIter* img, void *udata, uint32 w, uint32 h)
-{
- TIFF* tif = img->tif;
- ImageIterTileContigRoutine callback = img->callback.contig;
- uint16 orientation;
- uint32 row, nrow;
- u_char* buf;
- uint32 rowsperstrip;
- uint32 imagewidth = img->width;
- tsize_t scanline;
- int32 fromskew;
-
- buf = (u_char*) _TIFFmalloc(TIFFStripSize(tif));
- if (buf == 0) {
- TIFFErrorExt(tif->tif_clientdata, TIFFFileName(tif), "No space for strip buffer");
- return (0);
- }
- orientation = img->orientation;
- TIFFGetFieldDefaulted(tif, TIFFTAG_ROWSPERSTRIP, &rowsperstrip);
- scanline = TIFFScanlineSize(tif);
- fromskew = (w < imagewidth ? imagewidth - w : 0);
- for (row = 0; row < h; row += rowsperstrip) {
- nrow = (row + rowsperstrip > h ? h - row : rowsperstrip);
- if (TIFFReadEncodedStrip(tif, TIFFComputeStrip(tif, row, 0),
- buf, nrow*scanline) < 0 && img->stoponerr)
- break;
- (*callback)(img, udata, 0, row, w, nrow, fromskew, buf);
- }
- _TIFFfree(buf);
- return (1);
-}
-
-/*
- * Get a strip-organized image with
- * SamplesPerPixel > 1
- * PlanarConfiguration separated
- * We assume that all such images are RGB.
- */
-static int
-gtStripSeparate(TIFFImageIter* img, void *udata, uint32 w, uint32 h)
-{
- TIFF* tif = img->tif;
- ImageIterTileSeparateRoutine callback = img->callback.separate;
- uint16 orientation;
- u_char *buf;
- u_char *r, *g, *b, *a;
- uint32 row, nrow;
- tsize_t scanline;
- uint32 rowsperstrip;
- uint32 imagewidth = img->width;
- tsize_t stripsize;
- int32 fromskew;
- int alpha = img->alpha;
-
- stripsize = TIFFStripSize(tif);
- r = buf = (u_char *)_TIFFmalloc(4*stripsize);
- if (buf == 0) {
- TIFFErrorExt(tif->tif_clientdata, TIFFFileName(tif), "No space for tile buffer");
- return (0);
- }
- g = r + stripsize;
- b = g + stripsize;
- a = b + stripsize;
- if (!alpha)
- memset(a, 0xff, stripsize);
- orientation = img->orientation;
- TIFFGetFieldDefaulted(tif, TIFFTAG_ROWSPERSTRIP, &rowsperstrip);
- scanline = TIFFScanlineSize(tif);
- fromskew = (w < imagewidth ? imagewidth - w : 0);
- for (row = 0; row < h; row += rowsperstrip) {
- nrow = (row + rowsperstrip > h ? h - row : rowsperstrip);
- if (TIFFReadEncodedStrip(tif, TIFFComputeStrip(tif, row, 0),
- r, nrow*scanline) < 0 && img->stoponerr)
- break;
- if (TIFFReadEncodedStrip(tif, TIFFComputeStrip(tif, row, 1),
- g, nrow*scanline) < 0 && img->stoponerr)
- break;
- if (TIFFReadEncodedStrip(tif, TIFFComputeStrip(tif, row, 2),
- b, nrow*scanline) < 0 && img->stoponerr)
- break;
- if (alpha &&
- (TIFFReadEncodedStrip(tif, TIFFComputeStrip(tif, row, 3),
- a, nrow*scanline) < 0 && img->stoponerr))
- break;
- (*callback)(img, udata, 0, row, w, nrow, fromskew, r, g, b, a);
- }
- _TIFFfree(buf);
- return (1);
-}
-
-DECLAREContigCallbackFunc(TestContigCallback)
-{
- printf("Contig Callback called with x = %d, y = %d, w = %d, h = %d, fromskew = %d\n",
- x, y, w, h, fromskew);
-}
-
-
-DECLARESepCallbackFunc(TestSepCallback)
-{
- printf("Sep Callback called with x = %d, y = %d, w = %d, h = %d, fromskew = %d\n",
- x, y, w, h, fromskew);
-}
-
-
-#ifdef MAIN
-main(int argc, char **argv)
-{
- char emsg[1024];
- TIFFImageIter img;
- int ok;
- int stop = 1;
-
- TIFF *tif;
- unsigned long nx, ny;
- unsigned short BitsPerSample, SamplesPerPixel;
- int isColorMapped, isPliFile;
- unsigned char *ColorMap;
- unsigned char *data;
-
- if (argc < 2) {
- fprintf(stderr,"usage: %s tiff_file\n",argv[0]);
- exit(1);
- }
- tif = (TIFF *)PLIGetImage(argv[1], (void *) &data, &ColorMap,
- &nx, &ny, &BitsPerSample, &SamplesPerPixel,
- &isColorMapped, &isPliFile);
- if (tif != NULL) {
-
- if (TIFFImageIterBegin(&img, tif, stop, emsg)) {
- /* Here need to set data and callback function! */
- if (img.isContig) {
- img.callback = TestContigCallback;
- } else {
- img.callback = TestSepCallback;
- }
- ok = TIFFImageIterGet(&img, NULL, img.width, img.height);
- TIFFImageIterEnd(&img);
- } else {
- TIFFErrorExt(tif->tif_clientdata, TIFFFileName(tif), emsg);
- }
- }
-
-}
-#endif
-/*
- * Local Variables:
- * mode: c
- * c-basic-offset: 8
- * fill-column: 78
- * End:
- */