[wxWidgets.git] / src / tiff / tools / tiff2rgba.c


/*
 * 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

#ifdef NEED_LIBPORT
# include "libport.h"
#endif

#include "tiffiop.h"
#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;
int bigtiff_output = 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:bn8")) != -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 '8':
				bigtiff_output = 1;
				break;

			case '?':
				usage(0);
				/*NOTREACHED*/
		}

	if (argc - optind < 2)
		usage(-1);

	out = TIFFOpen(argv[argc-1], bigtiff_output?"w8":"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);
					(void) TIFFClose(in);
					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;
            }


	    /*
	     * XXX: raster array has 4-byte unsigned integer type, that is why
	     * we should rearrange it here.
	     */
#if HOST_BIGENDIAN
	    TIFFSwabArrayOfLong(raster, tile_width * tile_height);
#endif

            /*
             * 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;
        }

	/*
	 * XXX: raster array has 4-byte unsigned integer type, that is why
	 * we should rearrange it here.
	 */
#if HOST_BIGENDIAN
	TIFFSwabArrayOfLong(raster, width * rowsperstrip);
#endif

        /*
         * 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;
    size_t pixel_count;
        
    TIFFGetField(in, TIFFTAG_IMAGEWIDTH, &width);
    TIFFGetField(in, TIFFTAG_IMAGELENGTH, &height);
    pixel_count = width * height;

    /* XXX: Check the integer overflow. */
    if (!width || !height || pixel_count / width != height) {
        TIFFError(TIFFFileName(in),
		  "Malformed input file; can't allocate buffer for raster of %lux%lu size",
		  (unsigned long)width, (unsigned long)height);
        return 0;
    }

    rowsperstrip = TIFFDefaultStripSize(out, rowsperstrip);
    TIFFSetField(out, TIFFTAG_ROWSPERSTRIP, rowsperstrip);

    raster = (uint32*)_TIFFCheckMalloc(in, pixel_count, sizeof(uint32), "raster buffer");
    if (raster == 0) {
        TIFFError(TIFFFileName(in), "Failed to allocate buffer (%lu elements of %lu each)",
		  (unsigned long)pixel_count, (unsigned long)sizeof(uint32));
        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);
    }

    /*
     * XXX: raster array has 4-byte unsigned integer type, that is why
     * we should rearrange it here.
     */
#if HOST_BIGENDIAN
    TIFFSwabArrayOfLong(raster, width * height);
#endif

    /*
     * Do we want to strip away alpha components?
     */
    if (no_alpha)
    {
        size_t count = pixel_count;
        unsigned char *src, *dst;

	src = dst = (unsigned char *) raster;
        while (count > 0)
        {
	    *(dst++) = *(src++);
	    *(dst++) = *(src++);
	    *(dst++) = *(src++);
	    src++;
	    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] [-n] [-8] 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.",
    " -8 write BigTIFF file instead of ClassicTIFF",
    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: */
/*
 * Local Variables:
 * mode: c
 * c-basic-offset: 8
 * fill-column: 78
 * End:
 */
Commit	Line	Data
8414a40c VZ	1
	2	/*
	3	* Copyright (c) 1991-1997 Sam Leffler
	4	* Copyright (c) 1991-1997 Silicon Graphics, Inc.
	5	*
	6	* Permission to use, copy, modify, distribute, and sell this software and
	7	* its documentation for any purpose is hereby granted without fee, provided
	8	* that (i) the above copyright notices and this permission notice appear in
	9	* all copies of the software and related documentation, and (ii) the names of
	10	* Sam Leffler and Silicon Graphics may not be used in any advertising or
	11	* publicity relating to the software without the specific, prior written
	12	* permission of Sam Leffler and Silicon Graphics.
80ed523f VZ	13	*
	14	* THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
	15	* EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
	16	* WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
	17	*
8414a40c VZ	18	* IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
	19	* ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
	20	* OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
80ed523f VZ	21	* WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
80ed523f VZ	22	* LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
8414a40c VZ	23	* OF THIS SOFTWARE.
	24	*/
	25
	26	#include "tif_config.h"
	27
	28	#include <stdio.h>
	29	#include <string.h>
	30	#include <stdlib.h>
	31
	32	#ifdef HAVE_UNISTD_H
	33	# include <unistd.h>
	34	#endif
	35
80ed523f VZ	36	#ifdef NEED_LIBPORT
	37	# include "libport.h"
	38	#endif
	39
	40	#include "tiffiop.h"
8414a40c VZ	41	#include "tiffio.h"
	42
	43	#define streq(a,b) (strcmp(a,b) == 0)
	44	#define CopyField(tag, v) \
	45	if (TIFFGetField(in, tag, &v)) TIFFSetField(out, tag, v)
	46
	47	#ifndef howmany
	48	#define howmany(x, y) (((x)+((y)-1))/(y))
	49	#endif
	50	#define roundup(x, y) (howmany(x,y)*((uint32)(y)))
	51
80ed523f VZ	52	uint16 compression = COMPRESSION_PACKBITS;
	53	uint32 rowsperstrip = (uint32) -1;
	54	int process_by_block = 0; /* default is whole image at once */
	55	int no_alpha = 0;
	56	int bigtiff_output = 0;
8414a40c VZ	57
8414a40c VZ	58
80ed523f VZ	59	static int tiffcvt(TIFF* in, TIFF* out);
80ed523f VZ	60	static void usage(int code);
8414a40c VZ	61
	62	int
	63	main(int argc, char* argv[])
	64	{
80ed523f VZ	65	TIFF in, out;
	66	int c;
	67	extern int optind;
	68	extern char *optarg;
	69
	70	while ((c = getopt(argc, argv, "c:r:t:bn8")) != -1)
	71	switch (c) {
	72	case 'b':
	73	process_by_block = 1;
	74	break;
	75
	76	case 'c':
	77	if (streq(optarg, "none"))
	78	compression = COMPRESSION_NONE;
	79	else if (streq(optarg, "packbits"))
	80	compression = COMPRESSION_PACKBITS;
	81	else if (streq(optarg, "lzw"))
	82	compression = COMPRESSION_LZW;
	83	else if (streq(optarg, "jpeg"))
	84	compression = COMPRESSION_JPEG;
	85	else if (streq(optarg, "zip"))
	86	compression = COMPRESSION_DEFLATE;
	87	else
	88	usage(-1);
	89	break;
	90
	91	case 'r':
	92	rowsperstrip = atoi(optarg);
	93	break;
	94
	95	case 't':
	96	rowsperstrip = atoi(optarg);
	97	break;
	98
	99	case 'n':
	100	no_alpha = 1;
	101	break;
	102
	103	case '8':
	104	bigtiff_output = 1;
	105	break;
	106
	107	case '?':
	108	usage(0);
	109	/NOTREACHED/
	110	}
	111
	112	if (argc - optind < 2)
	113	usage(-1);
	114
	115	out = TIFFOpen(argv[argc-1], bigtiff_output?"w8":"w");
	116	if (out == NULL)
	117	return (-2);
	118
	119	for (; optind < argc-1; optind++) {
	120	in = TIFFOpen(argv[optind], "r");
	121	if (in != NULL) {
	122	do {
	123	if (!tiffcvt(in, out) \|\|
	124	!TIFFWriteDirectory(out)) {
	125	(void) TIFFClose(out);
	126	(void) TIFFClose(in);
	127	return (1);
	128	}
129	} while (TIFFReadDirectory(in));
130	(void) TIFFClose(in);
131	}
132	}
133	(void) TIFFClose(out);
134	return (0);
8414a40c VZ	135	}
	136
	137	static int
	138	cvt_by_tile( TIFF in, TIFF out )
	139
	140	{
	141	uint32* raster; /* retrieve RGBA image */
	142	uint32 width, height; /* image width & height */
	143	uint32 tile_width, tile_height;
	144	uint32 row, col;
	145	uint32 *wrk_line;
	146	int ok = 1;
	147
	148	TIFFGetField(in, TIFFTAG_IMAGEWIDTH, &width);
	149	TIFFGetField(in, TIFFTAG_IMAGELENGTH, &height);
	150
	151	if( !TIFFGetField(in, TIFFTAG_TILEWIDTH, &tile_width)
	152	\|\| !TIFFGetField(in, TIFFTAG_TILELENGTH, &tile_height) ) {
	153	TIFFError(TIFFFileName(in), "Source image not tiled");
	154	return (0);
	155	}
	156
	157	TIFFSetField(out, TIFFTAG_TILEWIDTH, tile_width );
	158	TIFFSetField(out, TIFFTAG_TILELENGTH, tile_height );
	159
	160	/*
	161	* Allocate tile buffer
	162	*/
	163	raster = (uint32)_TIFFmalloc(tile_width tile_height * sizeof (uint32));
	164	if (raster == 0) {
	165	TIFFError(TIFFFileName(in), "No space for raster buffer");
	166	return (0);
	167	}
	168
	169	/*
	170	* Allocate a scanline buffer for swapping during the vertical
	171	* mirroring pass.
	172	*/
	173	wrk_line = (uint32)_TIFFmalloc(tile_width sizeof (uint32));
	174	if (!wrk_line) {
	175	TIFFError(TIFFFileName(in), "No space for raster scanline buffer");
	176	ok = 0;
	177	}
	178
	179	/*
	180	* Loop over the tiles.
	181	*/
	182	for( row = 0; ok && row < height; row += tile_height )
	183	{
	184	for( col = 0; ok && col < width; col += tile_width )
	185	{
	186	uint32 i_row;
	187
	188	/* Read the tile into an RGBA array */
	189	if (!TIFFReadRGBATile(in, col, row, raster)) {
	190	ok = 0;
	191	break;
	192	}
	193
80ed523f VZ	194
	195	/*
	196	* XXX: raster array has 4-byte unsigned integer type, that is why
	197	* we should rearrange it here.
	198	*/
	199	#if HOST_BIGENDIAN
	200	TIFFSwabArrayOfLong(raster, tile_width * tile_height);
	201	#endif
	202
8414a40c VZ	203	/*
	204	* For some reason the TIFFReadRGBATile() function chooses the
	205	* lower left corner as the origin. Vertically mirror scanlines.
	206	*/
	207	for( i_row = 0; i_row < tile_height / 2; i_row++ )
	208	{
	209	uint32 top_line, bottom_line;
	210
	211	top_line = raster + tile_width * i_row;
	212	bottom_line = raster + tile_width * (tile_height-i_row-1);
	213
	214	_TIFFmemcpy(wrk_line, top_line, 4*tile_width);
	215	_TIFFmemcpy(top_line, bottom_line, 4*tile_width);
	216	_TIFFmemcpy(bottom_line, wrk_line, 4*tile_width);
	217	}
	218
	219	/*
	220	* Write out the result in a tile.
	221	*/
	222
	223	if( TIFFWriteEncodedTile( out,
	224	TIFFComputeTile( out, col, row, 0, 0),
	225	raster,
	226	4 * tile_width * tile_height ) == -1 )
	227	{
	228	ok = 0;
	229	break;
	230	}
	231	}
	232	}
	233
	234	_TIFFfree( raster );
	235	_TIFFfree( wrk_line );
	236
	237	return ok;
	238	}
	239
	240	static int
	241	cvt_by_strip( TIFF in, TIFF out )
	242
	243	{
	244	uint32* raster; /* retrieve RGBA image */
	245	uint32 width, height; /* image width & height */
	246	uint32 row;
	247	uint32 *wrk_line;
	248	int ok = 1;
	249
	250	TIFFGetField(in, TIFFTAG_IMAGEWIDTH, &width);
	251	TIFFGetField(in, TIFFTAG_IMAGELENGTH, &height);
	252
	253	if( !TIFFGetField(in, TIFFTAG_ROWSPERSTRIP, &rowsperstrip) ) {
	254	TIFFError(TIFFFileName(in), "Source image not in strips");
	255	return (0);
	256	}
	257
	258	TIFFSetField(out, TIFFTAG_ROWSPERSTRIP, rowsperstrip);
	259
	260	/*
	261	* Allocate strip buffer
	262	*/
	263	raster = (uint32)_TIFFmalloc(width rowsperstrip * sizeof (uint32));
	264	if (raster == 0) {
	265	TIFFError(TIFFFileName(in), "No space for raster buffer");
	266	return (0);
267	}
268
269	/*
270	* Allocate a scanline buffer for swapping during the vertical
271	* mirroring pass.
272	*/
273	wrk_line = (uint32)_TIFFmalloc(width sizeof (uint32));
274	if (!wrk_line) {
275	TIFFError(TIFFFileName(in), "No space for raster scanline buffer");
276	ok = 0;
277	}
278
279	/*
280	* Loop over the strips.
281	*/
282	for( row = 0; ok && row < height; row += rowsperstrip )
283	{
284	int rows_to_write, i_row;
285
286	/* Read the strip into an RGBA array */
287	if (!TIFFReadRGBAStrip(in, row, raster)) {
288	ok = 0;
289	break;
290	}
291
80ed523f VZ	292	/*
	293	* XXX: raster array has 4-byte unsigned integer type, that is why
	294	* we should rearrange it here.
	295	*/
	296	#if HOST_BIGENDIAN
	297	TIFFSwabArrayOfLong(raster, width * rowsperstrip);
	298	#endif
	299
8414a40c VZ	300	/*
	301	* Figure out the number of scanlines actually in this strip.
	302	*/
	303	if( row + rowsperstrip > height )
	304	rows_to_write = height - row;
	305	else
	306	rows_to_write = rowsperstrip;
	307
	308	/*
	309	* For some reason the TIFFReadRGBAStrip() function chooses the
	310	* lower left corner as the origin. Vertically mirror scanlines.
	311	*/
	312
	313	for( i_row = 0; i_row < rows_to_write / 2; i_row++ )
	314	{
	315	uint32 top_line, bottom_line;
	316
	317	top_line = raster + width * i_row;
	318	bottom_line = raster + width * (rows_to_write-i_row-1);
	319
	320	_TIFFmemcpy(wrk_line, top_line, 4*width);
	321	_TIFFmemcpy(top_line, bottom_line, 4*width);
	322	_TIFFmemcpy(bottom_line, wrk_line, 4*width);
	323	}
	324
	325	/*
	326	* Write out the result in a strip
	327	*/
	328
	329	if( TIFFWriteEncodedStrip( out, row / rowsperstrip, raster,
	330	4 * rows_to_write * width ) == -1 )
	331	{
	332	ok = 0;
	333	break;
	334	}
	335	}
	336
	337	_TIFFfree( raster );
	338	_TIFFfree( wrk_line );
	339
	340	return ok;
	341	}
	342
	343	/*
	344	* cvt_whole_image()
	345	*
	346	* read the whole image into one big RGBA buffer and then write out
	347	* strips from that. This is using the traditional TIFFReadRGBAImage()
	348	* API that we trust.
	349	*/
	350
	351	static int
	352	cvt_whole_image( TIFF in, TIFF out )
	353
	354	{
	355	uint32* raster; /* retrieve RGBA image */
	356	uint32 width, height; /* image width & height */
	357	uint32 row;
80ed523f	358	size_t pixel_count;
8414a40c VZ	359
	360	TIFFGetField(in, TIFFTAG_IMAGEWIDTH, &width);
	361	TIFFGetField(in, TIFFTAG_IMAGELENGTH, &height);
80ed523f VZ	362	pixel_count = width * height;
	363
	364	/* XXX: Check the integer overflow. */
	365	if (!width \|\| !height \|\| pixel_count / width != height) {
	366	TIFFError(TIFFFileName(in),
	367	"Malformed input file; can't allocate buffer for raster of %lux%lu size",
	368	(unsigned long)width, (unsigned long)height);
	369	return 0;
	370	}
8414a40c VZ	371
	372	rowsperstrip = TIFFDefaultStripSize(out, rowsperstrip);
	373	TIFFSetField(out, TIFFTAG_ROWSPERSTRIP, rowsperstrip);
	374
80ed523f	375	raster = (uint32*)_TIFFCheckMalloc(in, pixel_count, sizeof(uint32), "raster buffer");
8414a40c	376	if (raster == 0) {
80ed523f VZ	377	TIFFError(TIFFFileName(in), "Failed to allocate buffer (%lu elements of %lu each)",
80ed523f VZ	378	(unsigned long)pixel_count, (unsigned long)sizeof(uint32));
8414a40c VZ	379	return (0);
	380	}
	381
	382	/* Read the image in one chunk into an RGBA array */
	383	if (!TIFFReadRGBAImageOriented(in, width, height, raster,
	384	ORIENTATION_TOPLEFT, 0)) {
	385	_TIFFfree(raster);
	386	return (0);
	387	}
	388
	389	/*
80ed523f VZ	390	* XXX: raster array has 4-byte unsigned integer type, that is why
	391	* we should rearrange it here.
	392	*/
	393	#if HOST_BIGENDIAN
	394	TIFFSwabArrayOfLong(raster, width * height);
	395	#endif
	396
	397	/*
	398	* Do we want to strip away alpha components?
	399	*/
	400	if (no_alpha)
8414a40c	401	{
80ed523f	402	size_t count = pixel_count;
8414a40c VZ	403	unsigned char src, dst;
8414a40c VZ	404
80ed523f VZ	405	src = dst = (unsigned char *) raster;
80ed523f VZ	406	while (count > 0)
8414a40c	407	{
80ed523f VZ	408	(dst++) = (src++);
	409	(dst++) = (src++);
	410	(dst++) = (src++);
	411	src++;
	412	count--;
8414a40c VZ	413	}
	414	}
	415
80ed523f VZ	416	/*
	417	* Write out the result in strips
	418	*/
	419	for (row = 0; row < height; row += rowsperstrip)
8414a40c VZ	420	{
	421	unsigned char * raster_strip;
	422	int rows_to_write;
	423	int bytes_per_pixel;
	424
80ed523f	425	if (no_alpha)
8414a40c VZ	426	{
	427	raster_strip = ((unsigned char ) raster) + 3 row * width;
	428	bytes_per_pixel = 3;
	429	}
	430	else
	431	{
	432	raster_strip = (unsigned char ) (raster + row width);
	433	bytes_per_pixel = 4;
	434	}
	435
	436	if( row + rowsperstrip > height )
	437	rows_to_write = height - row;
	438	else
	439	rows_to_write = rowsperstrip;
	440
	441	if( TIFFWriteEncodedStrip( out, row / rowsperstrip, raster_strip,
	442	bytes_per_pixel * rows_to_write * width ) == -1 )
	443	{
	444	_TIFFfree( raster );
	445	return 0;
	446	}
	447	}
	448
	449	_TIFFfree( raster );
	450
	451	return 1;
	452	}
	453
	454
	455	static int
	456	tiffcvt(TIFF* in, TIFF* out)
	457	{
	458	uint32 width, height; /* image width & height */
	459	uint16 shortv;
	460	float floatv;
	461	char *stringv;
	462	uint32 longv;
	463	uint16 v[1];
	464
	465	TIFFGetField(in, TIFFTAG_IMAGEWIDTH, &width);
	466	TIFFGetField(in, TIFFTAG_IMAGELENGTH, &height);
	467
	468	CopyField(TIFFTAG_SUBFILETYPE, longv);
	469	TIFFSetField(out, TIFFTAG_IMAGEWIDTH, width);
	470	TIFFSetField(out, TIFFTAG_IMAGELENGTH, height);
	471	TIFFSetField(out, TIFFTAG_BITSPERSAMPLE, 8);
	472	TIFFSetField(out, TIFFTAG_COMPRESSION, compression);
	473	TIFFSetField(out, TIFFTAG_PHOTOMETRIC, PHOTOMETRIC_RGB);
	474
	475	CopyField(TIFFTAG_FILLORDER, shortv);
	476	TIFFSetField(out, TIFFTAG_ORIENTATION, ORIENTATION_TOPLEFT);
	477
	478	if( no_alpha )
	479	TIFFSetField(out, TIFFTAG_SAMPLESPERPIXEL, 3);
	480	else
	481	TIFFSetField(out, TIFFTAG_SAMPLESPERPIXEL, 4);
	482
	483	if( !no_alpha )
	484	{
	485	v[0] = EXTRASAMPLE_ASSOCALPHA;
	486	TIFFSetField(out, TIFFTAG_EXTRASAMPLES, 1, v);
	487	}
	488
	489	CopyField(TIFFTAG_XRESOLUTION, floatv);
490	CopyField(TIFFTAG_YRESOLUTION, floatv);
491	CopyField(TIFFTAG_RESOLUTIONUNIT, shortv);
492	TIFFSetField(out, TIFFTAG_PLANARCONFIG, PLANARCONFIG_CONTIG);
493	TIFFSetField(out, TIFFTAG_SOFTWARE, TIFFGetVersion());
494	CopyField(TIFFTAG_DOCUMENTNAME, stringv);
495
496	if( process_by_block && TIFFIsTiled( in ) )
497	return( cvt_by_tile( in, out ) );
498	else if( process_by_block )
499	return( cvt_by_strip( in, out ) );
500	else
501	return( cvt_whole_image( in, out ) );
502	}
503
504	static char* stuff[] = {
80ed523f	505	"usage: tiff2rgba [-c comp] [-r rows] [-b] [-n] [-8] input... output",
8414a40c VZ	506	"where comp is one of the following compression algorithms:",
	507	" jpeg\t\tJPEG encoding",
	508	" zip\t\tLempel-Ziv & Welch encoding",
	509	" lzw\t\tLempel-Ziv & Welch encoding",
	510	" packbits\tPackBits encoding",
	511	" none\t\tno compression",
	512	"and the other options are:",
	513	" -r\trows/strip",
	514	" -b (progress by block rather than as a whole image)",
	515	" -n don't emit alpha component.",
80ed523f	516	" -8 write BigTIFF file instead of ClassicTIFF",
8414a40c VZ	517	NULL
	518	};
	519
	520	static void
	521	usage(int code)
	522	{
	523	char buf[BUFSIZ];
	524	int i;
	525
	526	setbuf(stderr, buf);
	527	fprintf(stderr, "%s\n\n", TIFFGetVersion());
	528	for (i = 0; stuff[i] != NULL; i++)
	529	fprintf(stderr, "%s\n", stuff[i]);
	530	exit(code);
	531	}
	532
	533	/* vim: set ts=8 sts=8 sw=8 noet: */
80ed523f VZ	534	/*
	535	* Local Variables:
	536	* mode: c
	537	* c-basic-offset: 8
	538	* fill-column: 78
	539	* End:
	540	*/