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Built SDL2_image and _mixer static

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Alan Youngblood
2022-09-30 15:49:16 -04:00
parent e2605bf6c1
commit 1dec4347e0
4473 changed files with 1964551 additions and 9 deletions
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# CMake build for libtiff
#
# Copyright © 2015 Open Microscopy Environment / University of Dundee
# Written by Roger Leigh <rleigh@codelibre.net>
#
# 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.
extra_dist(
README
tif_imageiter.c
tif_imageiter.h
tif_pdsdirread.c
tif_pdsdirwrite.c)

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# Tag Image File Format (TIFF) Software
#
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# its documentation for any purpose is hereby granted without fee, provided
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# 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.
# Process this file with automake to produce Makefile.in.
EXTRA_DIST = \
CMakeLists.txt \
README \
tif_imageiter.c \
tif_imageiter.h \
tif_pdsdirread.c \
tif_pdsdirwrite.c

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Date: Fri, 01 Aug 1997 20:14:52 MDT
To: Sam Leffler <sam@cthulhu.engr.sgi.com>
From: "Conrad J. Poelman (WSAT)" <poelmanc@plk.af.mil>
Subject: Potential TIFF library additions
Delivery-Date: Fri, 01 Aug 1997 19:21:06 -0700
Sam,
You probably don't remember me, but I sent in a couple of bug fixes
regarding the TIFF library about a 16 months ago or so...
I just wanted to send you two other additions that I have made to our
local version of the TIFF library in hopes that you will want to
incorporate them into your next major release of the TIFF library.
(These additions are based on TIFF version 3.4beta31, but they sit on
top of the library so they shouldn't be much trouble to incorporate them
into any more recent version.) They are internally documented to a
reasonable extent and we've been successfully using them in our code
here for over a year. If you think they would make good additions to the
TIFF library, I'd be happy to clean them up more, document them more,
and/or integrate them with the latest version of the TIFF library, but I
figured I'd see if you were interested in using them before I went to
all that trouble.
TIFF Image Iterator
-------------------
Your ReadRGBA() routine works well for reading many different formats
(TILED, STIP, compressed or not, etc.) of the most basic types of data
(RGB, 8-bit greyscale, 8-bit colormapped) into an SGI-style data array,
and serves as a good template for users with other needs. I used it as
an exmaple of how to make an iterator which, rather than fill a data
array, calls an arbitrary user-supplied callback function for each
"chunk" of data - that "chunk" might be a strip or a tile, and might
have one sample-per-pixel or two, and might be 8-bit data or 16-bit or
24-bit. The callback function can do whatever it wants with the data -
store it in a big array, convert it to RGBA, or draw it directly to the
screen. I was able to use this iterator to read 16-bit greyscale and 32-
and 64-bit floating point data, which wasn't possible with ReadRGBA().
I have tested this routine with 8- and 16-bit greyscale data as well as
with 32- and 64-bit floating point data. I believe nearly all of our
data is organized in strips, so actually I'd appreciate it if you had
some tiled images that I could test it with.
It should certainly be possible and would be cleanest to reimplement
ReadRGBA() in terms of the image iterator, but I haven't done that.
Private Sub-Directory Read/Write
--------------------------------
TIFF-PL is a Phillips Laboratory extension to the TIFF tags that allows
us to store satellite imaging-specific information in a TIFF format,
such as the satellite's trajectory, the imaging time, etc. In order to
give us the flexibility to modify the tag definitions without getting
approval from the TIFF committee every time, we were given only three
TIFF tags - a PL signature, a PL version number, and PL directory
offset, which lists the position in the file at which to find a private
sub-directory of tags-value pairs. So I wrote two routines:
TIFFWritePrivateDataSubDirectory(), which takes a list of tags and a
"get" function and writes the tag values into the TIFF file, returning
the offset within the file at which it wrote the directory; and
TIFFReadPrivateDataSubDirectory(), which takes an offset, a list of
tags, and a "set" function and reads all the data from the private
directory. The functions themselves are pretty simple. (The files are
huge because I had to basically copy all of the tif_dirread.c and
tif_dirwrite.c files in order to access the various fetching routines
which were all declared static and therefore inaccessible in the TIFF
library.)
I'm including the four source files (tif_imgiter.h, tif_imgiter.c,
tif_pdsdirread.c, tif_pdsdirwrite.c) in case you want to take a look at
them. I can also send you some sample code that uses them if you like.
If you're interested in having them incorporated into the standard TIFF
library, I'd be happy to do that integration and clean up and document
the routines. (For example, I've already realized that instead of
limiting the SEP callback function to three bands (R,G,B) it should take
an array to enable the handling of n-banded multi-spectral data...) If
not, I'll just leave them as they are, since they work fine for us now.
Holler if you have any questions.
-- Conrad
__________________________________________________________________
Capt Conrad J. Poelman PL/WSAT (Phillips Laboratory)
505-846-4347 3550 Aberdeen Ave SE
(FAX) 505-846-4374 Kirtland AFB, NM 87117-5776

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/* $Header: /cvs/maptools/cvsroot/libtiff/contrib/pds/tif_imageiter.c,v 1.4 2010-06-08 18:55:15 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:
*/

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typedef struct _TIFFImageIter TIFFImageIter;
/* The callback function is called for each "block" of image pixel data after
it has been read from the file and decoded. This image pixel data is in the
buffer pp, and this data represents the image pixels from (x,y) to
(x+w,y+h). It is stored in pixel format, so each pixel contains
img->samplesperpixel consecutive samples each containing img->bitspersample
bits of data. The array pp is ordered in h consecutive rows of w+fromskew
pixels each. */
typedef void (*ImageIterTileContigRoutine)
(TIFFImageIter*, void *, uint32, uint32, uint32, uint32, int32,
unsigned char*);
#define DECLAREContigCallbackFunc(name) \
static void name(\
TIFFImageIter* img, \
void* user_data, \
uint32 x, uint32 y, \
uint32 w, uint32 h, \
int32 fromskew, \
u_char* pp \
)
typedef void (*ImageIterTileSeparateRoutine)
(TIFFImageIter*, void *, uint32, uint32, uint32, uint32, int32,
unsigned char*, unsigned char*, unsigned char*, unsigned char*);
#define DECLARESepCallbackFunc(name) \
static void name(\
TIFFImageIter* img, \
void* user_data, \
uint32 x, uint32 y, \
uint32 w, uint32 h,\
int32 fromskew, \
u_char* r, u_char* g, u_char* b, u_char* a\
)
struct _TIFFImageIter {
TIFF* tif; /* image handle */
int stoponerr; /* stop on read error */
int isContig; /* data is packed/separate */
int alpha; /* type of alpha data present */
uint32 width; /* image width */
uint32 height; /* image height */
uint16 bitspersample; /* image bits/sample */
uint16 samplesperpixel; /* image samples/pixel */
uint16 orientation; /* image orientation */
uint16 photometric; /* image photometric interp */
uint16* redcmap; /* colormap pallete */
uint16* greencmap;
uint16* bluecmap;
/* get image data routine */
int (*get)(TIFFImageIter*, void *udata, uint32, uint32);
union {
void (*any)(TIFFImageIter*);
ImageIterTileContigRoutine contig;
ImageIterTileSeparateRoutine separate;
} callback; /* fn to exec for each block */
};
/*
* Local Variables:
* mode: c
* c-basic-offset: 8
* fill-column: 78
* End:
*/

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/* $Header: /cvs/maptools/cvsroot/libtiff/contrib/pds/tif_pdsdirwrite.c,v 1.4 2010-06-08 18:55:15 bfriesen Exp $ */
/* When writing data to TIFF files, it is often useful to store application-
specific data in a private TIFF directory so that the tags don't need to
be registered and won't conflict with other people's user-defined tags.
One needs to have a registered public tag which contains some amount of
raw data. That raw data, however, is interpreted at an independent,
separate, private tiff directory. This file provides some routines which
will be useful for converting that data from its raw binary form into
the proper form for your application.
*/
/*
* Copyright (c) 1988-1996 Sam Leffler
* Copyright (c) 1991-1996 Silicon Graphics, Inc.
* Copyright (c( 1996 USAF Phillips Laboratory
*
* 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.
*
* These routines written by Conrad J. Poelman on a single late-night of
* March 20-21, 1996.
*
* The entire purpose of this file is to provide a single external function,
* TIFFWritePrivateDataSubDirectory(). This function is intended for use
* in writing a private subdirectory structure into a TIFF file. The
* actual reading of data from the structure is handled by the getFieldFn(),
* which is passed to TIFFWritePrivateDataSubDirectory() as a parameter. The
* idea is to enable any application wishing to read private subdirectories to
* do so easily using this function, without modifying the TIFF library.
*
* The astute observer will notice that only two functions are at all different
* from the original tif_dirwrite.c file: TIFFWritePrivateDataSubDirectory()and
* TIFFWriteNormalSubTag(). All the other stuff that makes this file so huge
* is only necessary because all of those functions are declared static in
* tif_dirwrite.c, so we have to totally duplicate them in order to use them.
*
* Oh, also please note the bug-fix in the routine TIFFWriteNormalSubTag(),
* which equally should be applied to TIFFWriteNormalTag().
*
*/
#include "tiffiop.h"
#if HAVE_IEEEFP
#define TIFFCvtNativeToIEEEFloat(tif, n, fp)
#define TIFFCvtNativeToIEEEDouble(tif, n, dp)
#else
extern void TIFFCvtNativeToIEEEFloat(TIFF*, uint32, float*);
extern void TIFFCvtNativeToIEEEDouble(TIFF*, uint32, double*);
#endif
static int TIFFWriteNormalTag(TIFF*, TIFFDirEntry*, const TIFFFieldInfo*);
static int TIFFWriteNormalSubTag(TIFF*, TIFFDirEntry*, const TIFFFieldInfo*,
int (*getFieldFn)(TIFF *tif,ttag_t tag,...));
static void TIFFSetupShortLong(TIFF*, ttag_t, TIFFDirEntry*, uint32);
static int TIFFSetupShortPair(TIFF*, ttag_t, TIFFDirEntry*);
static int TIFFWritePerSampleShorts(TIFF*, ttag_t, TIFFDirEntry*);
static int TIFFWritePerSampleAnys(TIFF*, TIFFDataType, ttag_t, TIFFDirEntry*);
static int TIFFWriteShortTable(TIFF*, ttag_t, TIFFDirEntry*, uint32, uint16**);
static int TIFFWriteShortArray(TIFF*,
TIFFDataType, ttag_t, TIFFDirEntry*, uint32, uint16*);
static int TIFFWriteLongArray(TIFF *,
TIFFDataType, ttag_t, TIFFDirEntry*, uint32, uint32*);
static int TIFFWriteRationalArray(TIFF *,
TIFFDataType, ttag_t, TIFFDirEntry*, uint32, float*);
static int TIFFWriteFloatArray(TIFF *,
TIFFDataType, ttag_t, TIFFDirEntry*, uint32, float*);
static int TIFFWriteDoubleArray(TIFF *,
TIFFDataType, ttag_t, TIFFDirEntry*, uint32, double*);
static int TIFFWriteByteArray(TIFF*, TIFFDirEntry*, char*);
static int TIFFWriteAnyArray(TIFF*,
TIFFDataType, ttag_t, TIFFDirEntry*, uint32, double*);
#ifdef COLORIMETRY_SUPPORT
static int TIFFWriteTransferFunction(TIFF*, TIFFDirEntry*);
#endif
static int TIFFWriteData(TIFF*, TIFFDirEntry*, char*);
static int TIFFLinkDirectory(TIFF*);
#define WriteRationalPair(type, tag1, v1, tag2, v2) { \
if (!TIFFWriteRational(tif, type, tag1, dir, v1)) \
goto bad; \
if (!TIFFWriteRational(tif, type, tag2, dir+1, v2)) \
goto bad; \
dir++; \
}
#define TIFFWriteRational(tif, type, tag, dir, v) \
TIFFWriteRationalArray((tif), (type), (tag), (dir), 1, &(v))
#ifndef TIFFWriteRational
static int TIFFWriteRational(TIFF*,
TIFFDataType, ttag_t, TIFFDirEntry*, float);
#endif
/* This function will write an entire directory to the disk, and return the
offset value indicating where in the file it wrote the beginning of the
directory structure. This is NOT the same as the offset value before
calling this function, because some of the fields may have caused various
data items to be written out BEFORE writing the directory structure.
This code was basically written by ripping of the TIFFWriteDirectory()
code and generalizing it, using RPS's TIFFWritePliIfd() code for
inspiration. My original goal was to make this code general enough that
the original TIFFWriteDirectory() could be rewritten to just call this
function with the appropriate field and field-accessing arguments.
However, now I realize that there's a lot of code that gets executed for
the main, standard TIFF directories that does not apply to special
private subdirectories, so such a reimplementation for the sake of
eliminating redundant or duplicate code is probably not possible,
unless we also pass in a Main flag to indiciate which type of handling
to do, which would be kind of a hack. I've marked those places where I
changed or ripped out code which would have to be re-inserted to
generalize this function. If it can be done in a clean and graceful way,
it would be a great way to generalize the TIFF library. Otherwise, I'll
just leave this code here where it duplicates but remains on top of and
hopefully mostly independent of the main TIFF library.
The caller will probably want to free the sub directory structure after
returning from this call, since otherwise once written out, the user
is likely to forget about it and leave data lying around.
*/
toff_t
TIFFWritePrivateDataSubDirectory(TIFF* tif,
uint32 pdir_fieldsset[], int pdir_fields_last,
TIFFFieldInfo *field_info,
int (*getFieldFn)(TIFF *tif, ttag_t tag, ...))
{
uint16 dircount;
uint32 diroff, nextdiroff;
ttag_t tag;
uint32 nfields;
tsize_t dirsize;
char* data;
TIFFDirEntry* dir;
u_long b, *fields, fields_size;
toff_t directory_offset;
TIFFFieldInfo* fip;
/*
* Deleted out all of the encoder flushing and such code from here -
* not necessary for subdirectories.
*/
/* Finish writing out any image data. */
TIFFFlushData(tif);
/*
* Size the directory so that we can calculate
* offsets for the data items that aren't kept
* in-place in each field.
*/
nfields = 0;
for (b = 0; b <= pdir_fields_last; b++)
if (FieldSet(pdir_fieldsset, b))
/* Deleted code to make size of first 4 tags 2
instead of 1. */
nfields += 1;
dirsize = nfields * sizeof (TIFFDirEntry);
data = (char*) _TIFFmalloc(dirsize);
if (data == NULL) {
TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
"Cannot write private subdirectory, out of space");
return (0);
}
/*
* Place directory in data section of the file. If there isn't one
* yet, place it at the end of the file. The directory is treated as
* data, so we don't link it into the directory structure at all.
*/
if (tif->tif_dataoff == 0)
tif->tif_dataoff =(TIFFSeekFile(tif, (toff_t) 0, SEEK_END)+1) &~ 1;
diroff = tif->tif_dataoff;
tif->tif_dataoff = (toff_t)(
diroff + sizeof (uint16) + dirsize + sizeof (toff_t));
if (tif->tif_dataoff & 1)
tif->tif_dataoff++;
(void) TIFFSeekFile(tif, tif->tif_dataoff, SEEK_SET);
/*tif->tif_curdir++;*/
dir = (TIFFDirEntry*) data;
/*
* Setup external form of directory
* entries and write data items.
*/
/*
* We make a local copy of the fieldsset here so that we don't mess
* up the original one when we call ResetFieldBit(). But I'm not sure
* why the original code calls ResetFieldBit(), since we're already
* going through the fields in order...
*
* fields_size is the number of uint32's we will need to hold the
* bit-mask for all of the fields. If our highest field number is
* 100, then we'll need 100 / (8*4)+1 == 4 uint32's to hold the
* fieldset.
*
* Unlike the original code, we allocate fields dynamically based
* on the requested pdir_fields_last value, allowing private
* data subdirectories to contain more than the built-in code's limit
* of 95 tags in a directory.
*/
fields_size = pdir_fields_last / (8*sizeof(uint32)) + 1;
fields = _TIFFmalloc(fields_size*sizeof(uint32));
_TIFFmemcpy(fields, pdir_fieldsset, fields_size * sizeof(uint32));
/* Deleted "write out extra samples tag" code here. */
/* Deleted code for checking a billion little special cases for the
* standard TIFF tags. Should add a general mechanism for overloading
* write function for each field, just like Brian kept telling me!!!
*/
for (fip = field_info; fip->field_tag; fip++) {
/* Deleted code to check for FIELD_IGNORE!! */
if (/* fip->field_bit == FIELD_IGNORE || */
!FieldSet(fields, fip->field_bit))
continue;
if (!TIFFWriteNormalSubTag(tif, dir, fip, getFieldFn))
goto bad;
dir++;
ResetFieldBit(fields, fip->field_bit);
}
/* Now we've written all of the referenced data, and are about to
write the main directory structure, so grab the tif_dataoff value
now so we can remember where we wrote the directory. */
directory_offset = tif->tif_dataoff;
/*
* Write directory.
*/
dircount = (uint16) nfields;
/* Deleted code to link to the next directory - we set it to zero! */
nextdiroff = 0;
if (tif->tif_flags & TIFF_SWAB) {
/*
* The file's byte order is opposite to the
* native machine architecture. We overwrite
* the directory information with impunity
* because it'll be released below after we
* write it to the file. Note that all the
* other tag construction routines assume that
* we do this byte-swapping; i.e. they only
* byte-swap indirect data.
*/
for (dir = (TIFFDirEntry*) data; dircount; dir++, dircount--) {
TIFFSwabArrayOfShort(&dir->tdir_tag, 2);
TIFFSwabArrayOfLong(&dir->tdir_count, 2);
}
dircount = (uint16) nfields;
TIFFSwabShort(&dircount);
TIFFSwabLong(&nextdiroff);
}
(void) TIFFSeekFile(tif, tif->tif_dataoff, SEEK_SET);
if (!WriteOK(tif, &dircount, sizeof (dircount))) {
TIFFErrorExt(tif->tif_clientdata, tif->tif_name, "Error writing private subdirectory count");
goto bad;
}
if (!WriteOK(tif, data, dirsize)) {
TIFFErrorExt(tif->tif_clientdata, tif->tif_name, "Error writing private subdirectory contents");
goto bad;
}
if (!WriteOK(tif, &nextdiroff, sizeof (nextdiroff))) {
TIFFErrorExt(tif->tif_clientdata, tif->tif_name, "Error writing private subdirectory link");
goto bad;
}
tif->tif_dataoff += sizeof(dircount) + dirsize + sizeof(nextdiroff);
_TIFFfree(data);
_TIFFfree(fields);
tif->tif_flags &= ~TIFF_DIRTYDIRECT;
#if (0)
/* This stuff commented out because I don't think we want it for
subdirectories, but I could be wrong. */
(*tif->tif_cleanup)(tif);
/*
* Reset directory-related state for subsequent
* directories.
*/
TIFFDefaultDirectory(tif);
tif->tif_curoff = 0;
tif->tif_row = (uint32) -1;
tif->tif_curstrip = (tstrip_t) -1;
#endif
return (directory_offset);
bad:
_TIFFfree(data);
_TIFFfree(fields);
return (0);
}
#undef WriteRationalPair
/*
* Process tags that are not special cased.
*/
/* The standard function TIFFWriteNormalTag() could definitely be replaced
with a simple call to this function, just adding TIFFGetField() as the
last argument. */
static int
TIFFWriteNormalSubTag(TIFF* tif, TIFFDirEntry* dir, const TIFFFieldInfo* fip,
int (*getFieldFn)(TIFF *tif, ttag_t tag, ...))
{
u_short wc = (u_short) fip->field_writecount;
dir->tdir_tag = fip->field_tag;
dir->tdir_type = (u_short) fip->field_type;
dir->tdir_count = wc;
#define WRITEF(x,y) x(tif, fip->field_type, fip->field_tag, dir, wc, y)
switch (fip->field_type) {
case TIFF_SHORT:
case TIFF_SSHORT:
if (wc > 1) {
uint16* wp;
if (wc == (u_short) TIFF_VARIABLE) {
(*getFieldFn)(tif, fip->field_tag, &wc, &wp);
dir->tdir_count = wc;
} else
(*getFieldFn)(tif, fip->field_tag, &wp);
if (!WRITEF(TIFFWriteShortArray, wp))
return (0);
} else {
uint16 sv;
(*getFieldFn)(tif, fip->field_tag, &sv);
dir->tdir_offset =
TIFFInsertData(tif, dir->tdir_type, sv);
}
break;
case TIFF_LONG:
case TIFF_SLONG:
if (wc > 1) {
uint32* lp;
if (wc == (u_short) TIFF_VARIABLE) {
(*getFieldFn)(tif, fip->field_tag, &wc, &lp);
dir->tdir_count = wc;
} else
(*getFieldFn)(tif, fip->field_tag, &lp);
if (!WRITEF(TIFFWriteLongArray, lp))
return (0);
} else {
/* XXX handle LONG->SHORT conversion */
(*getFieldFn)(tif, fip->field_tag, &dir->tdir_offset);
}
break;
case TIFF_RATIONAL:
case TIFF_SRATIONAL:
if (wc > 1) {
float* fp;
if (wc == (u_short) TIFF_VARIABLE) {
(*getFieldFn)(tif, fip->field_tag, &wc, &fp);
dir->tdir_count = wc;
} else
(*getFieldFn)(tif, fip->field_tag, &fp);
if (!WRITEF(TIFFWriteRationalArray, fp))
return (0);
} else {
float fv;
(*getFieldFn)(tif, fip->field_tag, &fv);
if (!WRITEF(TIFFWriteRationalArray, &fv))
return (0);
}
break;
case TIFF_FLOAT:
if (wc > 1) {
float* fp;
if (wc == (u_short) TIFF_VARIABLE) {
(*getFieldFn)(tif, fip->field_tag, &wc, &fp);
dir->tdir_count = wc;
} else
(*getFieldFn)(tif, fip->field_tag, &fp);
if (!WRITEF(TIFFWriteFloatArray, fp))
return (0);
} else {
float fv;
(*getFieldFn)(tif, fip->field_tag, &fv);
if (!WRITEF(TIFFWriteFloatArray, &fv))
return (0);
}
break;
case TIFF_DOUBLE:
/* Hey - I think this is a bug, or at least a "gross
inconsistency", in the TIFF library. Look at the original
TIFF library code below within the "#if (0) ... #else".
Just from the type of *dp, you can see that this code
expects TIFFGetField() to be handed a double ** for
any TIFF_DOUBLE tag, even for the constant wc==1 case.
This is totally inconsistent with other fields (like
TIFF_FLOAT, above) and is also inconsistent with the
TIFFSetField() function for TIFF_DOUBLEs, which expects
to be passed a single double by value for the wc==1 case.
(See the handling of TIFFFetchNormalTag() in tif_dirread.c
for an example.) Maybe this function was written before
TIFFWriteDoubleArray() was written, not that that's an
excuse. Anyway, the new code below is a trivial modification
of the TIFF_FLOAT code above. The fact that even single
doubles get written out in the data segment and get an
offset value stored is irrelevant here - that is all
handled by TIFFWriteDoubleArray(). */
#if (0)
{ double* dp;
if (wc == (u_short) TIFF_VARIABLE) {
(*getFieldFn)(tif, fip->field_tag, &wc, &dp);
dir->tdir_count = wc;
} else
(*getFieldFn)(tif, fip->field_tag, &dp);
TIFFCvtNativeToIEEEDouble(tif, wc, dp);
if (!TIFFWriteData(tif, dir, (char*) dp))
return (0);
}
#else
if (wc > 1) {
double* dp;
if (wc == (u_short) TIFF_VARIABLE) {
(*getFieldFn)(tif, fip->field_tag, &wc, &dp);
dir->tdir_count = wc;
} else
(*getFieldFn)(tif, fip->field_tag, &dp);
if (!WRITEF(TIFFWriteDoubleArray, dp))
return (0);
} else {
double dv;
(*getFieldFn)(tif, fip->field_tag, &dv);
if (!WRITEF(TIFFWriteDoubleArray, &dv))
return (0);
}
#endif
break;
case TIFF_ASCII:
{ char* cp;
(*getFieldFn)(tif, fip->field_tag, &cp);
dir->tdir_count = (uint32) (strlen(cp) + 1);
if (!TIFFWriteByteArray(tif, dir, cp))
return (0);
}
break;
case TIFF_UNDEFINED:
{ char* cp;
if (wc == (u_short) TIFF_VARIABLE) {
(*getFieldFn)(tif, fip->field_tag, &wc, &cp);
dir->tdir_count = wc;
} else
(*getFieldFn)(tif, fip->field_tag, &cp);
if (!TIFFWriteByteArray(tif, dir, cp))
return (0);
}
break;
}
return (1);
}
#undef WRITEF
/* Everything after this is exactly duplicated from the standard tif_dirwrite.c
file, necessitated by the fact that they are declared static there so
we can't call them!
*/
/*
* Setup a directory entry with either a SHORT
* or LONG type according to the value.
*/
static void
TIFFSetupShortLong(TIFF* tif, ttag_t tag, TIFFDirEntry* dir, uint32 v)
{
dir->tdir_tag = tag;
dir->tdir_count = 1;
if (v > 0xffffL) {
dir->tdir_type = (short) TIFF_LONG;
dir->tdir_offset = v;
} else {
dir->tdir_type = (short) TIFF_SHORT;
dir->tdir_offset = TIFFInsertData(tif, (int) TIFF_SHORT, v);
}
}
#undef MakeShortDirent
#ifndef TIFFWriteRational
/*
* Setup a RATIONAL directory entry and
* write the associated indirect value.
*/
static int
TIFFWriteRational(TIFF* tif,
TIFFDataType type, ttag_t tag, TIFFDirEntry* dir, float v)
{
return (TIFFWriteRationalArray(tif, type, tag, dir, 1, &v));
}
#endif
#define NITEMS(x) (sizeof (x) / sizeof (x[0]))
/*
* Setup a directory entry that references a
* samples/pixel array of SHORT values and
* (potentially) write the associated indirect
* values.
*/
static int
TIFFWritePerSampleShorts(TIFF* tif, ttag_t tag, TIFFDirEntry* dir)
{
uint16 buf[10], v;
uint16* w = buf;
int i, status, samples = tif->tif_dir.td_samplesperpixel;
if (samples > NITEMS(buf))
w = (uint16*) _TIFFmalloc(samples * sizeof (uint16));
TIFFGetField(tif, tag, &v);
for (i = 0; i < samples; i++)
w[i] = v;
status = TIFFWriteShortArray(tif, TIFF_SHORT, tag, dir, samples, w);
if (w != buf)
_TIFFfree((char*) w);
return (status);
}
/*
* Setup a directory entry that references a samples/pixel array of ``type''
* values and (potentially) write the associated indirect values. The source
* data from TIFFGetField() for the specified tag must be returned as double.
*/
static int
TIFFWritePerSampleAnys(TIFF* tif,
TIFFDataType type, ttag_t tag, TIFFDirEntry* dir)
{
double buf[10], v;
double* w = buf;
int i, status;
int samples = (int) tif->tif_dir.td_samplesperpixel;
if (samples > NITEMS(buf))
w = (double*) _TIFFmalloc(samples * sizeof (double));
TIFFGetField(tif, tag, &v);
for (i = 0; i < samples; i++)
w[i] = v;
status = TIFFWriteAnyArray(tif, type, tag, dir, samples, w);
if (w != buf)
_TIFFfree(w);
return (status);
}
#undef NITEMS
/*
* Setup a pair of shorts that are returned by
* value, rather than as a reference to an array.
*/
static int
TIFFSetupShortPair(TIFF* tif, ttag_t tag, TIFFDirEntry* dir)
{
uint16 v[2];
TIFFGetField(tif, tag, &v[0], &v[1]);
return (TIFFWriteShortArray(tif, TIFF_SHORT, tag, dir, 2, v));
}
/*
* Setup a directory entry for an NxM table of shorts,
* where M is known to be 2**bitspersample, and write
* the associated indirect data.
*/
static int
TIFFWriteShortTable(TIFF* tif,
ttag_t tag, TIFFDirEntry* dir, uint32 n, uint16** table)
{
uint32 i, off;
dir->tdir_tag = tag;
dir->tdir_type = (short) TIFF_SHORT;
/* XXX -- yech, fool TIFFWriteData */
dir->tdir_count = (uint32) (1L<<tif->tif_dir.td_bitspersample);
off = tif->tif_dataoff;
for (i = 0; i < n; i++)
if (!TIFFWriteData(tif, dir, (char *)table[i]))
return (0);
dir->tdir_count *= n;
dir->tdir_offset = off;
return (1);
}
/*
* Write/copy data associated with an ASCII or opaque tag value.
*/
static int
TIFFWriteByteArray(TIFF* tif, TIFFDirEntry* dir, char* cp)
{
if (dir->tdir_count > 4) {
if (!TIFFWriteData(tif, dir, cp))
return (0);
} else
_TIFFmemcpy(&dir->tdir_offset, cp, dir->tdir_count);
return (1);
}
/*
* Setup a directory entry of an array of SHORT
* or SSHORT and write the associated indirect values.
*/
static int
TIFFWriteShortArray(TIFF* tif,
TIFFDataType type, ttag_t tag, TIFFDirEntry* dir, uint32 n, uint16* v)
{
dir->tdir_tag = tag;
dir->tdir_type = (short) type;
dir->tdir_count = n;
if (n <= 2) {
if (tif->tif_header.tiff_magic == TIFF_BIGENDIAN) {
dir->tdir_offset = (uint32) ((long) v[0] << 16);
if (n == 2)
dir->tdir_offset |= v[1] & 0xffff;
} else {
dir->tdir_offset = v[0] & 0xffff;
if (n == 2)
dir->tdir_offset |= (long) v[1] << 16;
}
return (1);
} else
return (TIFFWriteData(tif, dir, (char*) v));
}
/*
* Setup a directory entry of an array of LONG
* or SLONG and write the associated indirect values.
*/
static int
TIFFWriteLongArray(TIFF* tif,
TIFFDataType type, ttag_t tag, TIFFDirEntry* dir, uint32 n, uint32* v)
{
dir->tdir_tag = tag;
dir->tdir_type = (short) type;
dir->tdir_count = n;
if (n == 1) {
dir->tdir_offset = v[0];
return (1);
} else
return (TIFFWriteData(tif, dir, (char*) v));
}
/*
* Setup a directory entry of an array of RATIONAL
* or SRATIONAL and write the associated indirect values.
*/
static int
TIFFWriteRationalArray(TIFF* tif,
TIFFDataType type, ttag_t tag, TIFFDirEntry* dir, uint32 n, float* v)
{
uint32 i;
uint32* t;
int status;
dir->tdir_tag = tag;
dir->tdir_type = (short) type;
dir->tdir_count = n;
t = (uint32*) _TIFFmalloc(2*n * sizeof (uint32));
for (i = 0; i < n; i++) {
float fv = v[i];
int sign = 1;
uint32 den;
if (fv < 0) {
if (type == TIFF_RATIONAL) {
TIFFWarning(tif->tif_name,
"\"%s\": Information lost writing value (%g) as (unsigned) RATIONAL",
_TIFFFieldWithTag(tif,tag)->field_name, v);
fv = 0;
} else
fv = -fv, sign = -1;
}
den = 1L;
if (fv > 0) {
while (fv < 1L<<(31-3) && den < 1L<<(31-3))
fv *= 1<<3, den *= 1L<<3;
}
t[2*i+0] = sign * (fv + 0.5);
t[2*i+1] = den;
}
status = TIFFWriteData(tif, dir, (char *)t);
_TIFFfree((char*) t);
return (status);
}
static int
TIFFWriteFloatArray(TIFF* tif,
TIFFDataType type, ttag_t tag, TIFFDirEntry* dir, uint32 n, float* v)
{
dir->tdir_tag = tag;
dir->tdir_type = (short) type;
dir->tdir_count = n;
TIFFCvtNativeToIEEEFloat(tif, n, v);
if (n == 1) {
dir->tdir_offset = *(uint32*) &v[0];
return (1);
} else
return (TIFFWriteData(tif, dir, (char*) v));
}
static int
TIFFWriteDoubleArray(TIFF* tif,
TIFFDataType type, ttag_t tag, TIFFDirEntry* dir, uint32 n, double* v)
{
dir->tdir_tag = tag;
dir->tdir_type = (short) type;
dir->tdir_count = n;
TIFFCvtNativeToIEEEDouble(tif, n, v);
return (TIFFWriteData(tif, dir, (char*) v));
}
/*
* Write an array of ``type'' values for a specified tag (i.e. this is a tag
* which is allowed to have different types, e.g. SMaxSampleType).
* Internally the data values are represented as double since a double can
* hold any of the TIFF tag types (yes, this should really be an abstract
* type tany_t for portability). The data is converted into the specified
* type in a temporary buffer and then handed off to the appropriate array
* writer.
*/
static int
TIFFWriteAnyArray(TIFF* tif,
TIFFDataType type, ttag_t tag, TIFFDirEntry* dir, uint32 n, double* v)
{
char buf[10 * sizeof(double)];
char* w = buf;
int i, status = 0;
if (n * TIFFDataWidth(type) > sizeof buf)
w = (char*) _TIFFmalloc(n * TIFFDataWidth(type));
switch (type) {
case TIFF_BYTE:
{ unsigned char* bp = (unsigned char*) w;
for (i = 0; i < n; i++)
bp[i] = (unsigned char) v[i];
dir->tdir_tag = tag;
dir->tdir_type = (short) type;
dir->tdir_count = n;
if (!TIFFWriteByteArray(tif, dir, (char*) bp))
goto out;
}
break;
case TIFF_SBYTE:
{ signed char* bp = (signed char*) w;
for (i = 0; i < n; i++)
bp[i] = (signed char) v[i];
dir->tdir_tag = tag;
dir->tdir_type = (short) type;
dir->tdir_count = n;
if (!TIFFWriteByteArray(tif, dir, (char*) bp))
goto out;
}
break;
case TIFF_SHORT:
{ uint16* bp = (uint16*) w;
for (i = 0; i < n; i++)
bp[i] = (uint16) v[i];
if (!TIFFWriteShortArray(tif, type, tag, dir, n, (uint16*)bp))
goto out;
}
break;
case TIFF_SSHORT:
{ int16* bp = (int16*) w;
for (i = 0; i < n; i++)
bp[i] = (int16) v[i];
if (!TIFFWriteShortArray(tif, type, tag, dir, n, (uint16*)bp))
goto out;
}
break;
case TIFF_LONG:
{ uint32* bp = (uint32*) w;
for (i = 0; i < n; i++)
bp[i] = (uint32) v[i];
if (!TIFFWriteLongArray(tif, type, tag, dir, n, bp))
goto out;
}
break;
case TIFF_SLONG:
{ int32* bp = (int32*) w;
for (i = 0; i < n; i++)
bp[i] = (int32) v[i];
if (!TIFFWriteLongArray(tif, type, tag, dir, n, (uint32*) bp))
goto out;
}
break;
case TIFF_FLOAT:
{ float* bp = (float*) w;
for (i = 0; i < n; i++)
bp[i] = (float) v[i];
if (!TIFFWriteFloatArray(tif, type, tag, dir, n, bp))
goto out;
}
break;
case TIFF_DOUBLE:
return (TIFFWriteDoubleArray(tif, type, tag, dir, n, v));
default:
/* TIFF_NOTYPE */
/* TIFF_ASCII */
/* TIFF_UNDEFINED */
/* TIFF_RATIONAL */
/* TIFF_SRATIONAL */
goto out;
}
status = 1;
out:
if (w != buf)
_TIFFfree(w);
return (status);
}
#ifdef COLORIMETRY_SUPPORT
static int
TIFFWriteTransferFunction(TIFF* tif, TIFFDirEntry* dir)
{
TIFFDirectory* td = &tif->tif_dir;
tsize_t n = (1L<<td->td_bitspersample) * sizeof (uint16);
uint16** tf = td->td_transferfunction;
int ncols;
/*
* Check if the table can be written as a single column,
* or if it must be written as 3 columns. Note that we
* write a 3-column tag if there are 2 samples/pixel and
* a single column of data won't suffice--hmm.
*/
switch (td->td_samplesperpixel - td->td_extrasamples) {
default: if (_TIFFmemcmp(tf[0], tf[2], n)) { ncols = 3; break; }
case 2: if (_TIFFmemcmp(tf[0], tf[1], n)) { ncols = 3; break; }
case 1: case 0: ncols = 1;
}
return (TIFFWriteShortTable(tif,
TIFFTAG_TRANSFERFUNCTION, dir, ncols, tf));
}
#endif
/*
* Write a contiguous directory item.
*/
static int
TIFFWriteData(TIFF* tif, TIFFDirEntry* dir, char* cp)
{
tsize_t cc;
if (tif->tif_flags & TIFF_SWAB) {
switch (dir->tdir_type) {
case TIFF_SHORT:
case TIFF_SSHORT:
TIFFSwabArrayOfShort((uint16*) cp, dir->tdir_count);
break;
case TIFF_LONG:
case TIFF_SLONG:
case TIFF_FLOAT:
TIFFSwabArrayOfLong((uint32*) cp, dir->tdir_count);
break;
case TIFF_RATIONAL:
case TIFF_SRATIONAL:
TIFFSwabArrayOfLong((uint32*) cp, 2*dir->tdir_count);
break;
case TIFF_DOUBLE:
TIFFSwabArrayOfDouble((double*) cp, dir->tdir_count);
break;
}
}
dir->tdir_offset = tif->tif_dataoff;
cc = dir->tdir_count * TIFFDataWidth(dir->tdir_type);
if (SeekOK(tif, dir->tdir_offset) &&
WriteOK(tif, cp, cc)) {
tif->tif_dataoff += (cc + 1) & ~1;
return (1);
}
TIFFErrorExt(tif->tif_clientdata, tif->tif_name, "Error writing data for field \"%s\"",
_TIFFFieldWithTag(tif, dir->tdir_tag)->field_name);
return (0);
}
/*
* Link the current directory into the
* directory chain for the file.
*/
static int
TIFFLinkDirectory(TIFF* tif)
{
static const char module[] = "TIFFLinkDirectory";
uint32 nextdir;
uint32 diroff;
tif->tif_diroff = (TIFFSeekFile(tif, (toff_t) 0, SEEK_END)+1) &~ 1;
diroff = (uint32) tif->tif_diroff;
if (tif->tif_flags & TIFF_SWAB)
TIFFSwabLong(&diroff);
#if SUBIFD_SUPPORT
if (tif->tif_flags & TIFF_INSUBIFD) {
(void) TIFFSeekFile(tif, tif->tif_subifdoff, SEEK_SET);
if (!WriteOK(tif, &diroff, sizeof (diroff))) {
TIFFErrorExt(tif->tif_clientdata, module,
"%s: Error writing SubIFD directory link",
tif->tif_name);
return (0);
}
/*
* Advance to the next SubIFD or, if this is
* the last one configured, revert back to the
* normal directory linkage.
*/
if (--tif->tif_nsubifd)
tif->tif_subifdoff += sizeof (diroff);
else
tif->tif_flags &= ~TIFF_INSUBIFD;
return (1);
}
#endif
if (tif->tif_header.tiff_diroff == 0) {
/*
* First directory, overwrite offset in header.
*/
tif->tif_header.tiff_diroff = (uint32) tif->tif_diroff;
#define HDROFF(f) ((toff_t) &(((TIFFHeader*) 0)->f))
(void) TIFFSeekFile(tif, HDROFF(tiff_diroff), SEEK_SET);
if (!WriteOK(tif, &diroff, sizeof (diroff))) {
TIFFErrorExt(tif->tif_clientdata, tif->tif_name, "Error writing TIFF header");
return (0);
}
return (1);
}
/*
* Not the first directory, search to the last and append.
*/
nextdir = tif->tif_header.tiff_diroff;
do {
uint16 dircount;
if (!SeekOK(tif, nextdir) ||
!ReadOK(tif, &dircount, sizeof (dircount))) {
TIFFErrorExt(tif->tif_clientdata, module, "Error fetching directory count");
return (0);
}
if (tif->tif_flags & TIFF_SWAB)
TIFFSwabShort(&dircount);
(void) TIFFSeekFile(tif,
dircount * sizeof (TIFFDirEntry), SEEK_CUR);
if (!ReadOK(tif, &nextdir, sizeof (nextdir))) {
TIFFErrorExt(tif->tif_clientdata, module, "Error fetching directory link");
return (0);
}
if (tif->tif_flags & TIFF_SWAB)
TIFFSwabLong(&nextdir);
} while (nextdir != 0);
(void) TIFFSeekFile(tif, -(toff_t) sizeof (nextdir), SEEK_CUR);
if (!WriteOK(tif, &diroff, sizeof (diroff))) {
TIFFErrorExt(tif->tif_clientdata, module, "Error writing directory link");
return (0);
}
return (1);
}
/*
* Local Variables:
* mode: c
* c-basic-offset: 8
* fill-column: 78
* End:
*/