511 lines
14 KiB
C
511 lines
14 KiB
C
/* $Id: tiff2rgba.c,v 1.13 2007-01-31 14:46:59 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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#include "tif_config.h"
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#ifdef HAVE_UNISTD_H
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# include <unistd.h>
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#endif
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#include "tiffio.h"
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#define streq(a,b) (strcmp(a,b) == 0)
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#define CopyField(tag, v) \
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if (TIFFGetField(in, tag, &v)) TIFFSetField(out, tag, v)
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#ifndef howmany
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#define howmany(x, y) (((x)+((y)-1))/(y))
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#endif
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#define roundup(x, y) (howmany(x,y)*((uint32)(y)))
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uint16 compression = COMPRESSION_PACKBITS;
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uint32 rowsperstrip = (uint32) -1;
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int process_by_block = 0; /* default is whole image at once */
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int no_alpha = 0;
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static int tiffcvt(TIFF* in, TIFF* out);
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static void usage(int code);
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int
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main(int argc, char* argv[])
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{
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TIFF *in, *out;
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int c;
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extern int optind;
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extern char *optarg;
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while ((c = getopt(argc, argv, "c:r:t:bn")) != -1)
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switch (c) {
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case 'b':
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process_by_block = 1;
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break;
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case 'c':
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if (streq(optarg, "none"))
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compression = COMPRESSION_NONE;
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else if (streq(optarg, "packbits"))
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compression = COMPRESSION_PACKBITS;
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else if (streq(optarg, "lzw"))
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compression = COMPRESSION_LZW;
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else if (streq(optarg, "jpeg"))
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compression = COMPRESSION_JPEG;
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else if (streq(optarg, "zip"))
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compression = COMPRESSION_DEFLATE;
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else
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usage(-1);
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break;
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case 'r':
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rowsperstrip = atoi(optarg);
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break;
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case 't':
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rowsperstrip = atoi(optarg);
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break;
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case 'n':
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no_alpha = 1;
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break;
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case '?':
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usage(0);
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/*NOTREACHED*/
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}
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if (argc - optind < 2)
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usage(-1);
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out = TIFFOpen(argv[argc-1], "w");
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if (out == NULL)
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return (-2);
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for (; optind < argc-1; optind++) {
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in = TIFFOpen(argv[optind], "r");
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if (in != NULL) {
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do {
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if (!tiffcvt(in, out) ||
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!TIFFWriteDirectory(out)) {
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(void) TIFFClose(out);
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return (1);
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}
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} while (TIFFReadDirectory(in));
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(void) TIFFClose(in);
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}
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}
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(void) TIFFClose(out);
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return (0);
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}
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static int
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cvt_by_tile( TIFF *in, TIFF *out )
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{
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uint32* raster; /* retrieve RGBA image */
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uint32 width, height; /* image width & height */
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uint32 tile_width, tile_height;
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uint32 row, col;
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uint32 *wrk_line;
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int ok = 1;
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TIFFGetField(in, TIFFTAG_IMAGEWIDTH, &width);
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TIFFGetField(in, TIFFTAG_IMAGELENGTH, &height);
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if( !TIFFGetField(in, TIFFTAG_TILEWIDTH, &tile_width)
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|| !TIFFGetField(in, TIFFTAG_TILELENGTH, &tile_height) ) {
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TIFFError(TIFFFileName(in), "Source image not tiled");
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return (0);
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}
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TIFFSetField(out, TIFFTAG_TILEWIDTH, tile_width );
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TIFFSetField(out, TIFFTAG_TILELENGTH, tile_height );
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/*
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* Allocate tile buffer
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*/
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raster = (uint32*)_TIFFmalloc(tile_width * tile_height * sizeof (uint32));
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if (raster == 0) {
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TIFFError(TIFFFileName(in), "No space for raster buffer");
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return (0);
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}
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/*
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* Allocate a scanline buffer for swapping during the vertical
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* mirroring pass.
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*/
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wrk_line = (uint32*)_TIFFmalloc(tile_width * sizeof (uint32));
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if (!wrk_line) {
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TIFFError(TIFFFileName(in), "No space for raster scanline buffer");
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ok = 0;
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}
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/*
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* Loop over the tiles.
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*/
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for( row = 0; ok && row < height; row += tile_height )
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{
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for( col = 0; ok && col < width; col += tile_width )
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{
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uint32 i_row;
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/* Read the tile into an RGBA array */
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if (!TIFFReadRGBATile(in, col, row, raster)) {
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ok = 0;
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break;
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}
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/*
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* XXX: raster array has 4-byte unsigned integer type, that is why
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* we should rearrange it here.
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*/
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#if HOST_BIGENDIAN
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TIFFSwabArrayOfLong(raster, tile_width * tile_height);
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#endif
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/*
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* For some reason the TIFFReadRGBATile() function chooses the
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* lower left corner as the origin. Vertically mirror scanlines.
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*/
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for( i_row = 0; i_row < tile_height / 2; i_row++ )
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{
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uint32 *top_line, *bottom_line;
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top_line = raster + tile_width * i_row;
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bottom_line = raster + tile_width * (tile_height-i_row-1);
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_TIFFmemcpy(wrk_line, top_line, 4*tile_width);
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_TIFFmemcpy(top_line, bottom_line, 4*tile_width);
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_TIFFmemcpy(bottom_line, wrk_line, 4*tile_width);
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}
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/*
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* Write out the result in a tile.
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*/
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if( TIFFWriteEncodedTile( out,
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TIFFComputeTile( out, col, row, 0, 0),
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raster,
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4 * tile_width * tile_height ) == -1 )
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{
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ok = 0;
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break;
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}
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}
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}
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_TIFFfree( raster );
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_TIFFfree( wrk_line );
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return ok;
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}
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static int
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cvt_by_strip( TIFF *in, TIFF *out )
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{
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uint32* raster; /* retrieve RGBA image */
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uint32 width, height; /* image width & height */
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uint32 row;
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uint32 *wrk_line;
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int ok = 1;
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TIFFGetField(in, TIFFTAG_IMAGEWIDTH, &width);
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TIFFGetField(in, TIFFTAG_IMAGELENGTH, &height);
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if( !TIFFGetField(in, TIFFTAG_ROWSPERSTRIP, &rowsperstrip) ) {
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TIFFError(TIFFFileName(in), "Source image not in strips");
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return (0);
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}
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TIFFSetField(out, TIFFTAG_ROWSPERSTRIP, rowsperstrip);
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/*
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* Allocate strip buffer
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*/
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raster = (uint32*)_TIFFmalloc(width * rowsperstrip * sizeof (uint32));
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if (raster == 0) {
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TIFFError(TIFFFileName(in), "No space for raster buffer");
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return (0);
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}
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/*
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* Allocate a scanline buffer for swapping during the vertical
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* mirroring pass.
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*/
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wrk_line = (uint32*)_TIFFmalloc(width * sizeof (uint32));
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if (!wrk_line) {
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TIFFError(TIFFFileName(in), "No space for raster scanline buffer");
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ok = 0;
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}
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/*
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* Loop over the strips.
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*/
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for( row = 0; ok && row < height; row += rowsperstrip )
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{
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int rows_to_write, i_row;
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/* Read the strip into an RGBA array */
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if (!TIFFReadRGBAStrip(in, row, raster)) {
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ok = 0;
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break;
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}
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/*
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* XXX: raster array has 4-byte unsigned integer type, that is why
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* we should rearrange it here.
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*/
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#if HOST_BIGENDIAN
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TIFFSwabArrayOfLong(raster, width * rowsperstrip);
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#endif
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/*
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* Figure out the number of scanlines actually in this strip.
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*/
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if( row + rowsperstrip > height )
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rows_to_write = height - row;
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else
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rows_to_write = rowsperstrip;
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/*
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* For some reason the TIFFReadRGBAStrip() function chooses the
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* lower left corner as the origin. Vertically mirror scanlines.
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*/
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for( i_row = 0; i_row < rows_to_write / 2; i_row++ )
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{
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uint32 *top_line, *bottom_line;
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top_line = raster + width * i_row;
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bottom_line = raster + width * (rows_to_write-i_row-1);
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_TIFFmemcpy(wrk_line, top_line, 4*width);
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_TIFFmemcpy(top_line, bottom_line, 4*width);
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_TIFFmemcpy(bottom_line, wrk_line, 4*width);
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}
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/*
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* Write out the result in a strip
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*/
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if( TIFFWriteEncodedStrip( out, row / rowsperstrip, raster,
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4 * rows_to_write * width ) == -1 )
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{
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ok = 0;
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break;
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}
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}
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_TIFFfree( raster );
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_TIFFfree( wrk_line );
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return ok;
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}
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/*
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* cvt_whole_image()
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*
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* read the whole image into one big RGBA buffer and then write out
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* strips from that. This is using the traditional TIFFReadRGBAImage()
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* API that we trust.
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*/
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static int
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cvt_whole_image( TIFF *in, TIFF *out )
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{
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uint32* raster; /* retrieve RGBA image */
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uint32 width, height; /* image width & height */
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uint32 row;
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TIFFGetField(in, TIFFTAG_IMAGEWIDTH, &width);
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TIFFGetField(in, TIFFTAG_IMAGELENGTH, &height);
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rowsperstrip = TIFFDefaultStripSize(out, rowsperstrip);
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TIFFSetField(out, TIFFTAG_ROWSPERSTRIP, rowsperstrip);
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raster = (uint32*)_TIFFmalloc(width * height * sizeof (uint32));
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if (raster == 0) {
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TIFFError(TIFFFileName(in), "No space for raster buffer");
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return (0);
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}
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/* Read the image in one chunk into an RGBA array */
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if (!TIFFReadRGBAImageOriented(in, width, height, raster,
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ORIENTATION_TOPLEFT, 0)) {
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_TIFFfree(raster);
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return (0);
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}
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/*
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* XXX: raster array has 4-byte unsigned integer type, that is why
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* we should rearrange it here.
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*/
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#if HOST_BIGENDIAN
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TIFFSwabArrayOfLong(raster, width * height);
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#endif
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/*
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* Do we want to strip away alpha components?
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*/
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if (no_alpha)
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{
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int pixel_count = width * height;
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unsigned char *src, *dst;
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src = dst = (unsigned char *) raster;
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while (pixel_count > 0)
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{
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*(dst++) = *(src++);
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*(dst++) = *(src++);
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*(dst++) = *(src++);
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src++, pixel_count--;
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}
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}
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/*
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* Write out the result in strips
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*/
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for (row = 0; row < height; row += rowsperstrip)
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{
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unsigned char * raster_strip;
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int rows_to_write;
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int bytes_per_pixel;
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if (no_alpha)
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{
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raster_strip = ((unsigned char *) raster) + 3 * row * width;
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bytes_per_pixel = 3;
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}
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else
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{
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raster_strip = (unsigned char *) (raster + row * width);
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bytes_per_pixel = 4;
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}
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if( row + rowsperstrip > height )
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rows_to_write = height - row;
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else
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rows_to_write = rowsperstrip;
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if( TIFFWriteEncodedStrip( out, row / rowsperstrip, raster_strip,
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bytes_per_pixel * rows_to_write * width ) == -1 )
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{
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_TIFFfree( raster );
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return 0;
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}
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}
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_TIFFfree( raster );
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return 1;
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}
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static int
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tiffcvt(TIFF* in, TIFF* out)
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{
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uint32 width, height; /* image width & height */
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uint16 shortv;
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float floatv;
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char *stringv;
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uint32 longv;
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uint16 v[1];
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TIFFGetField(in, TIFFTAG_IMAGEWIDTH, &width);
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TIFFGetField(in, TIFFTAG_IMAGELENGTH, &height);
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CopyField(TIFFTAG_SUBFILETYPE, longv);
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TIFFSetField(out, TIFFTAG_IMAGEWIDTH, width);
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TIFFSetField(out, TIFFTAG_IMAGELENGTH, height);
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TIFFSetField(out, TIFFTAG_BITSPERSAMPLE, 8);
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TIFFSetField(out, TIFFTAG_COMPRESSION, compression);
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TIFFSetField(out, TIFFTAG_PHOTOMETRIC, PHOTOMETRIC_RGB);
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CopyField(TIFFTAG_FILLORDER, shortv);
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TIFFSetField(out, TIFFTAG_ORIENTATION, ORIENTATION_TOPLEFT);
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if( no_alpha )
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TIFFSetField(out, TIFFTAG_SAMPLESPERPIXEL, 3);
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else
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TIFFSetField(out, TIFFTAG_SAMPLESPERPIXEL, 4);
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if( !no_alpha )
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{
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v[0] = EXTRASAMPLE_ASSOCALPHA;
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TIFFSetField(out, TIFFTAG_EXTRASAMPLES, 1, v);
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}
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CopyField(TIFFTAG_XRESOLUTION, floatv);
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CopyField(TIFFTAG_YRESOLUTION, floatv);
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CopyField(TIFFTAG_RESOLUTIONUNIT, shortv);
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TIFFSetField(out, TIFFTAG_PLANARCONFIG, PLANARCONFIG_CONTIG);
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TIFFSetField(out, TIFFTAG_SOFTWARE, TIFFGetVersion());
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CopyField(TIFFTAG_DOCUMENTNAME, stringv);
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if( process_by_block && TIFFIsTiled( in ) )
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return( cvt_by_tile( in, out ) );
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else if( process_by_block )
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return( cvt_by_strip( in, out ) );
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else
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return( cvt_whole_image( in, out ) );
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}
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static char* stuff[] = {
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"usage: tiff2rgba [-c comp] [-r rows] [-b] input... output",
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"where comp is one of the following compression algorithms:",
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" jpeg\t\tJPEG encoding",
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" zip\t\tLempel-Ziv & Welch encoding",
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" lzw\t\tLempel-Ziv & Welch encoding",
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" packbits\tPackBits encoding",
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" none\t\tno compression",
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"and the other options are:",
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" -r\trows/strip",
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" -b (progress by block rather than as a whole image)",
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" -n don't emit alpha component.",
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NULL
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};
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static void
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usage(int code)
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{
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char buf[BUFSIZ];
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int i;
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setbuf(stderr, buf);
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fprintf(stderr, "%s\n\n", TIFFGetVersion());
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for (i = 0; stuff[i] != NULL; i++)
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fprintf(stderr, "%s\n", stuff[i]);
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exit(code);
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}
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/* vim: set ts=8 sts=8 sw=8 noet: */
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