/* $Id: tiff2rgba.c,v 1.11 2004/11/03 00:28:24 fwarmerdam Exp $ */
/*
* Copyright (c) 1991-1997 Sam Leffler
* Copyright (c) 1991-1997 Silicon Graphics, Inc.
*
* Permission to use, copy, modify, distribute, and sell this software and
* its documentation for any purpose is hereby granted without fee, provided
* that (i) the above copyright notices and this permission notice appear in
* all copies of the software and related documentation, and (ii) the names of
* Sam Leffler and Silicon Graphics may not be used in any advertising or
* publicity relating to the software without the specific, prior written
* permission of Sam Leffler and Silicon Graphics.
*
* THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
* EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
* WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
*
* IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
* ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
* OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
* WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
* LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
* OF THIS SOFTWARE.
*/
#include "tif_config.h"
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
#include "tiffio.h"
#define streq(a,b) (strcmp(a,b) == 0)
#define CopyField(tag, v) \
if (TIFFGetField(in, tag, &v)) TIFFSetField(out, tag, v)
#ifndef howmany
#define howmany(x, y) (((x)+((y)-1))/(y))
#endif
#define roundup(x, y) (howmany(x,y)*((uint32)(y)))
uint16 compression = COMPRESSION_PACKBITS;
uint32 rowsperstrip = (uint32) -1;
int process_by_block = 0; /* default is whole image at once */
int no_alpha = 0;
static int tiffcvt(TIFF* in, TIFF* out);
static void usage(int code);
int
main(int argc, char* argv[])
{
TIFF *in, *out;
int c;
extern int optind;
extern char *optarg;
while ((c = getopt(argc, argv, "c:r:t:bn")) != -1)
switch (c) {
case 'b':
process_by_block = 1;
break;
case 'c':
if (streq(optarg, "none"))
compression = COMPRESSION_NONE;
else if (streq(optarg, "packbits"))
compression = COMPRESSION_PACKBITS;
else if (streq(optarg, "lzw"))
compression = COMPRESSION_LZW;
else if (streq(optarg, "jpeg"))
compression = COMPRESSION_JPEG;
else if (streq(optarg, "zip"))
compression = COMPRESSION_DEFLATE;
else
usage(-1);
break;
case 'r':
rowsperstrip = atoi(optarg);
break;
case 't':
rowsperstrip = atoi(optarg);
break;
case 'n':
no_alpha = 1;
break;
case '?':
usage(0);
/*NOTREACHED*/
}
if (argc - optind < 2)
usage(-1);
out = TIFFOpen(argv[argc-1], "w");
if (out == NULL)
return (-2);
for (; optind < argc-1; optind++) {
in = TIFFOpen(argv[optind], "r");
if (in != NULL) {
do {
if (!tiffcvt(in, out) ||
!TIFFWriteDirectory(out)) {
(void) TIFFClose(out);
return (1);
}
} while (TIFFReadDirectory(in));
(void) TIFFClose(in);
}
}
(void) TIFFClose(out);
return (0);
}
static int
cvt_by_tile( TIFF *in, TIFF *out )
{
uint32* raster; /* retrieve RGBA image */
uint32 width, height; /* image width & height */
uint32 tile_width, tile_height;
uint32 row, col;
uint32 *wrk_line;
int ok = 1;
TIFFGetField(in, TIFFTAG_IMAGEWIDTH, &width);
TIFFGetField(in, TIFFTAG_IMAGELENGTH, &height);
if( !TIFFGetField(in, TIFFTAG_TILEWIDTH, &tile_width)
|| !TIFFGetField(in, TIFFTAG_TILELENGTH, &tile_height) ) {
TIFFError(TIFFFileName(in), "Source image not tiled");
return (0);
}
TIFFSetField(out, TIFFTAG_TILEWIDTH, tile_width );
TIFFSetField(out, TIFFTAG_TILELENGTH, tile_height );
/*
* Allocate tile buffer
*/
raster = (uint32*)_TIFFmalloc(tile_width * tile_height * sizeof (uint32));
if (raster == 0) {
TIFFError(TIFFFileName(in), "No space for raster buffer");
return (0);
}
/*
* Allocate a scanline buffer for swapping during the vertical
* mirroring pass.
*/
wrk_line = (uint32*)_TIFFmalloc(tile_width * sizeof (uint32));
if (!wrk_line) {
TIFFError(TIFFFileName(in), "No space for raster scanline buffer");
ok = 0;
}
/*
* Loop over the tiles.
*/
for( row = 0; ok && row < height; row += tile_height )
{
for( col = 0; ok && col < width; col += tile_width )
{
uint32 i_row;
/* Read the tile into an RGBA array */
if (!TIFFReadRGBATile(in, col, row, raster)) {
ok = 0;
break;
}
/*
* For some reason the TIFFReadRGBATile() function chooses the
* lower left corner as the origin. Vertically mirror scanlines.
*/
for( i_row = 0; i_row < tile_height / 2; i_row++ )
{
uint32 *top_line, *bottom_line;
top_line = raster + tile_width * i_row;
bottom_line = raster + tile_width * (tile_height-i_row-1);
_TIFFmemcpy(wrk_line, top_line, 4*tile_width);
_TIFFmemcpy(top_line, bottom_line, 4*tile_width);
_TIFFmemcpy(bottom_line, wrk_line, 4*tile_width);
}
/*
* Write out the result in a tile.
*/
if( TIFFWriteEncodedTile( out,
TIFFComputeTile( out, col, row, 0, 0),
raster,
4 * tile_width * tile_height ) == -1 )
{
ok = 0;
break;
}
}
}
_TIFFfree( raster );
_TIFFfree( wrk_line );
return ok;
}
static int
cvt_by_strip( TIFF *in, TIFF *out )
{
uint32* raster; /* retrieve RGBA image */
uint32 width, height; /* image width & height */
uint32 row;
uint32 *wrk_line;
int ok = 1;
TIFFGetField(in, TIFFTAG_IMAGEWIDTH, &width);
TIFFGetField(in, TIFFTAG_IMAGELENGTH, &height);
if( !TIFFGetField(in, TIFFTAG_ROWSPERSTRIP, &rowsperstrip) ) {
TIFFError(TIFFFileName(in), "Source image not in strips");
return (0);
}
TIFFSetField(out, TIFFTAG_ROWSPERSTRIP, rowsperstrip);
/*
* Allocate strip buffer
*/
raster = (uint32*)_TIFFmalloc(width * rowsperstrip * sizeof (uint32));
if (raster == 0) {
TIFFError(TIFFFileName(in), "No space for raster buffer");
return (0);
}
/*
* Allocate a scanline buffer for swapping during the vertical
* mirroring pass.
*/
wrk_line = (uint32*)_TIFFmalloc(width * sizeof (uint32));
if (!wrk_line) {
TIFFError(TIFFFileName(in), "No space for raster scanline buffer");
ok = 0;
}
/*
* Loop over the strips.
*/
for( row = 0; ok && row < height; row += rowsperstrip )
{
int rows_to_write, i_row;
/* Read the strip into an RGBA array */
if (!TIFFReadRGBAStrip(in, row, raster)) {
ok = 0;
break;
}
/*
* Figure out the number of scanlines actually in this strip.
*/
if( row + rowsperstrip > height )
rows_to_write = height - row;
else
rows_to_write = rowsperstrip;
/*
* For some reason the TIFFReadRGBAStrip() function chooses the
* lower left corner as the origin. Vertically mirror scanlines.
*/
for( i_row = 0; i_row < rows_to_write / 2; i_row++ )
{
uint32 *top_line, *bottom_line;
top_line = raster + width * i_row;
bottom_line = raster + width * (rows_to_write-i_row-1);
_TIFFmemcpy(wrk_line, top_line, 4*width);
_TIFFmemcpy(top_line, bottom_line, 4*width);
_TIFFmemcpy(bottom_line, wrk_line, 4*width);
}
/*
* Write out the result in a strip
*/
if( TIFFWriteEncodedStrip( out, row / rowsperstrip, raster,
4 * rows_to_write * width ) == -1 )
{
ok = 0;
break;
}
}
_TIFFfree( raster );
_TIFFfree( wrk_line );
return ok;
}
/*
* cvt_whole_image()
*
* read the whole image into one big RGBA buffer and then write out
* strips from that. This is using the traditional TIFFReadRGBAImage()
* API that we trust.
*/
static int
cvt_whole_image( TIFF *in, TIFF *out )
{
uint32* raster; /* retrieve RGBA image */
uint32 width, height; /* image width & height */
uint32 row;
TIFFGetField(in, TIFFTAG_IMAGEWIDTH, &width);
TIFFGetField(in, TIFFTAG_IMAGELENGTH, &height);
rowsperstrip = TIFFDefaultStripSize(out, rowsperstrip);
TIFFSetField(out, TIFFTAG_ROWSPERSTRIP, rowsperstrip);
raster = (uint32*)_TIFFmalloc(width * height * sizeof (uint32));
if (raster == 0) {
TIFFError(TIFFFileName(in), "No space for raster buffer");
return (0);
}
/* Read the image in one chunk into an RGBA array */
if (!TIFFReadRGBAImageOriented(in, width, height, raster,
ORIENTATION_TOPLEFT, 0)) {
_TIFFfree(raster);
return (0);
}
/*
** Do we want to strip away alpha components?
*/
if( no_alpha )
{
int pixel_count = width * height;
unsigned char *src, *dst;
src = (unsigned char *) raster;
dst = (unsigned char *) raster;
while( pixel_count > 0 )
{
*(dst++) = *(src++);
*(dst++) = *(src++);
*(dst++) = *(src++);
src++;
pixel_count--;
}
}
/* Write out the result in strips */
for( row = 0; row < height; row += rowsperstrip )
{
unsigned char * raster_strip;
int rows_to_write;
int bytes_per_pixel;
if( no_alpha )
{
raster_strip = ((unsigned char *) raster) + 3 * row * width;
bytes_per_pixel = 3;
}
else
{
raster_strip = (unsigned char *) (raster + row * width);
bytes_per_pixel = 4;
}
if( row + rowsperstrip > height )
rows_to_write = height - row;
else
rows_to_write = rowsperstrip;
if( TIFFWriteEncodedStrip( out, row / rowsperstrip, raster_strip,
bytes_per_pixel * rows_to_write * width ) == -1 )
{
_TIFFfree( raster );
return 0;
}
}
_TIFFfree( raster );
return 1;
}
static int
tiffcvt(TIFF* in, TIFF* out)
{
uint32 width, height; /* image width & height */
uint16 shortv;
float floatv;
char *stringv;
uint32 longv;
uint16 v[1];
TIFFGetField(in, TIFFTAG_IMAGEWIDTH, &width);
TIFFGetField(in, TIFFTAG_IMAGELENGTH, &height);
CopyField(TIFFTAG_SUBFILETYPE, longv);
TIFFSetField(out, TIFFTAG_IMAGEWIDTH, width);
TIFFSetField(out, TIFFTAG_IMAGELENGTH, height);
TIFFSetField(out, TIFFTAG_BITSPERSAMPLE, 8);
TIFFSetField(out, TIFFTAG_COMPRESSION, compression);
TIFFSetField(out, TIFFTAG_PHOTOMETRIC, PHOTOMETRIC_RGB);
CopyField(TIFFTAG_FILLORDER, shortv);
TIFFSetField(out, TIFFTAG_ORIENTATION, ORIENTATION_TOPLEFT);
if( no_alpha )
TIFFSetField(out, TIFFTAG_SAMPLESPERPIXEL, 3);
else
TIFFSetField(out, TIFFTAG_SAMPLESPERPIXEL, 4);
if( !no_alpha )
{
v[0] = EXTRASAMPLE_ASSOCALPHA;
TIFFSetField(out, TIFFTAG_EXTRASAMPLES, 1, v);
}
CopyField(TIFFTAG_XRESOLUTION, floatv);
CopyField(TIFFTAG_YRESOLUTION, floatv);
CopyField(TIFFTAG_RESOLUTIONUNIT, shortv);
TIFFSetField(out, TIFFTAG_PLANARCONFIG, PLANARCONFIG_CONTIG);
TIFFSetField(out, TIFFTAG_SOFTWARE, TIFFGetVersion());
CopyField(TIFFTAG_DOCUMENTNAME, stringv);
if( process_by_block && TIFFIsTiled( in ) )
return( cvt_by_tile( in, out ) );
else if( process_by_block )
return( cvt_by_strip( in, out ) );
else
return( cvt_whole_image( in, out ) );
}
static char* stuff[] = {
"usage: tiff2rgba [-c comp] [-r rows] [-b] input... output",
"where comp is one of the following compression algorithms:",
" jpeg\t\tJPEG encoding",
" zip\t\tLempel-Ziv & Welch encoding",
" lzw\t\tLempel-Ziv & Welch encoding",
" packbits\tPackBits encoding",
" none\t\tno compression",
"and the other options are:",
" -r\trows/strip",
" -b (progress by block rather than as a whole image)",
" -n don't emit alpha component.",
NULL
};
static void
usage(int code)
{
char buf[BUFSIZ];
int i;
setbuf(stderr, buf);
fprintf(stderr, "%s\n\n", TIFFGetVersion());
for (i = 0; stuff[i] != NULL; i++)
fprintf(stderr, "%s\n", stuff[i]);
exit(code);
}
/* vim: set ts=8 sts=8 sw=8 noet: */
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