diff options
Diffstat (limited to 'tiff/tools/bmp2tiff.c')
| -rw-r--r-- | tiff/tools/bmp2tiff.c | 850 |
1 files changed, 850 insertions, 0 deletions
diff --git a/tiff/tools/bmp2tiff.c b/tiff/tools/bmp2tiff.c new file mode 100644 index 0000000..02b83b3 --- /dev/null +++ b/tiff/tools/bmp2tiff.c @@ -0,0 +1,850 @@ +/* $Id: bmp2tiff.c,v 1.20.2.1 2010-06-08 18:50:43 bfriesen Exp $ + * + * Project: libtiff tools + * Purpose: Convert Windows BMP files in TIFF. + * Author: Andrey Kiselev, dron@ak4719.spb.edu + * + ****************************************************************************** + * Copyright (c) 2004, Andrey Kiselev <dron@ak4719.spb.edu> + * + * 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 <stdlib.h> +#include <string.h> +#include <ctype.h> +#include <sys/types.h> +#include <sys/stat.h> + +#ifdef HAVE_UNISTD_H +# include <unistd.h> +#endif + +#if HAVE_FCNTL_H +# include <fcntl.h> +#endif + +#if HAVE_SYS_TYPES_H +# include <sys/types.h> +#endif + +#if HAVE_IO_H +# include <io.h> +#endif + +#include "tiffio.h" + +#ifndef O_BINARY +# define O_BINARY 0 +#endif + +enum BMPType +{ + BMPT_WIN4, /* BMP used in Windows 3.0/NT 3.51/95 */ + BMPT_WIN5, /* BMP used in Windows NT 4.0/98/Me/2000/XP */ + BMPT_OS21, /* BMP used in OS/2 PM 1.x */ + BMPT_OS22 /* BMP used in OS/2 PM 2.x */ +}; + +/* + * Bitmap file consists of a BMPFileHeader structure followed by a + * BMPInfoHeader structure. An array of BMPColorEntry structures (also called + * a colour table) follows the bitmap information header structure. The colour + * table is followed by a second array of indexes into the colour table (the + * actual bitmap data). Data may be comressed, for 4-bpp and 8-bpp used RLE + * compression. + * + * +---------------------+ + * | BMPFileHeader | + * +---------------------+ + * | BMPInfoHeader | + * +---------------------+ + * | BMPColorEntry array | + * +---------------------+ + * | Colour-index array | + * +---------------------+ + * + * All numbers stored in Intel order with least significant byte first. + */ + +enum BMPComprMethod +{ + BMPC_RGB = 0L, /* Uncompressed */ + BMPC_RLE8 = 1L, /* RLE for 8 bpp images */ + BMPC_RLE4 = 2L, /* RLE for 4 bpp images */ + BMPC_BITFIELDS = 3L, /* Bitmap is not compressed and the colour table + * consists of three DWORD color masks that specify + * the red, green, and blue components of each + * pixel. This is valid when used with + * 16- and 32-bpp bitmaps. */ + BMPC_JPEG = 4L, /* Indicates that the image is a JPEG image. */ + BMPC_PNG = 5L /* Indicates that the image is a PNG image. */ +}; + +enum BMPLCSType /* Type of logical color space. */ +{ + BMPLT_CALIBRATED_RGB = 0, /* This value indicates that endpoints and + * gamma values are given in the appropriate + * fields. */ + BMPLT_DEVICE_RGB = 1, + BMPLT_DEVICE_CMYK = 2 +}; + +typedef struct +{ + int32 iCIEX; + int32 iCIEY; + int32 iCIEZ; +} BMPCIEXYZ; + +typedef struct /* This structure contains the x, y, and z */ +{ /* coordinates of the three colors that */ + /* correspond */ + BMPCIEXYZ iCIERed; /* to the red, green, and blue endpoints for */ + BMPCIEXYZ iCIEGreen; /* a specified logical color space. */ + BMPCIEXYZ iCIEBlue; +} BMPCIEXYZTriple; + +typedef struct +{ + char bType[2]; /* Signature "BM" */ + uint32 iSize; /* Size in bytes of the bitmap file. Should + * always be ignored while reading because + * of error in Windows 3.0 SDK's description + * of this field */ + uint16 iReserved1; /* Reserved, set as 0 */ + uint16 iReserved2; /* Reserved, set as 0 */ + uint32 iOffBits; /* Offset of the image from file start in bytes */ +} BMPFileHeader; + +/* File header size in bytes: */ +const int BFH_SIZE = 14; + +typedef struct +{ + uint32 iSize; /* Size of BMPInfoHeader structure in bytes. + * Should be used to determine start of the + * colour table */ + int32 iWidth; /* Image width */ + int32 iHeight; /* Image height. If positive, image has bottom + * left origin, if negative --- top left. */ + int16 iPlanes; /* Number of image planes (must be set to 1) */ + int16 iBitCount; /* Number of bits per pixel (1, 4, 8, 16, 24 + * or 32). If 0 then the number of bits per + * pixel is specified or is implied by the + * JPEG or PNG format. */ + uint32 iCompression; /* Compression method */ + uint32 iSizeImage; /* Size of uncomressed image in bytes. May + * be 0 for BMPC_RGB bitmaps. If iCompression + * is BI_JPEG or BI_PNG, iSizeImage indicates + * the size of the JPEG or PNG image buffer. */ + int32 iXPelsPerMeter; /* X resolution, pixels per meter (0 if not used) */ + int32 iYPelsPerMeter; /* Y resolution, pixels per meter (0 if not used) */ + uint32 iClrUsed; /* Size of colour table. If 0, iBitCount should + * be used to calculate this value + * (1<<iBitCount). This value should be + * unsigned for proper shifting. */ + int32 iClrImportant; /* Number of important colours. If 0, all + * colours are required */ + + /* + * Fields above should be used for bitmaps, compatible with Windows NT 3.51 + * and earlier. Windows 98/Me, Windows 2000/XP introduces additional fields: + */ + + int32 iRedMask; /* Colour mask that specifies the red component + * of each pixel, valid only if iCompression + * is set to BI_BITFIELDS. */ + int32 iGreenMask; /* The same for green component */ + int32 iBlueMask; /* The same for blue component */ + int32 iAlphaMask; /* Colour mask that specifies the alpha + * component of each pixel. */ + uint32 iCSType; /* Colour space of the DIB. */ + BMPCIEXYZTriple sEndpoints; /* This member is ignored unless the iCSType + * member specifies BMPLT_CALIBRATED_RGB. */ + int32 iGammaRed; /* Toned response curve for red. This member + * is ignored unless color values are + * calibrated RGB values and iCSType is set to + * BMPLT_CALIBRATED_RGB. Specified + * in 16^16 format. */ + int32 iGammaGreen; /* Toned response curve for green. */ + int32 iGammaBlue; /* Toned response curve for blue. */ +} BMPInfoHeader; + +/* + * Info header size in bytes: + */ +const unsigned int BIH_WIN4SIZE = 40; /* for BMPT_WIN4 */ +const unsigned int BIH_WIN5SIZE = 57; /* for BMPT_WIN5 */ +const unsigned int BIH_OS21SIZE = 12; /* for BMPT_OS21 */ +const unsigned int BIH_OS22SIZE = 64; /* for BMPT_OS22 */ + +/* + * We will use plain byte array instead of this structure, but declaration + * provided for reference + */ +typedef struct +{ + char bBlue; + char bGreen; + char bRed; + char bReserved; /* Must be 0 */ +} BMPColorEntry; + +static uint16 compression = (uint16) -1; +static int jpegcolormode = JPEGCOLORMODE_RGB; +static int quality = 75; /* JPEG quality */ +static uint16 predictor = 0; + +static void usage(void); +static int processCompressOptions(char*); +static void rearrangePixels(char *, uint32, uint32); + +int +main(int argc, char* argv[]) +{ + uint32 width, length; + uint16 nbands = 1; /* number of bands in input image */ + uint16 depth = 8; /* bits per pixel in input image */ + uint32 rowsperstrip = (uint32) -1; + uint16 photometric = PHOTOMETRIC_MINISBLACK; + int fd = 0; + struct stat instat; + char *outfilename = NULL, *infilename = NULL; + TIFF *out = NULL; + + BMPFileHeader file_hdr; + BMPInfoHeader info_hdr; + int bmp_type; + uint32 clr_tbl_size, n_clr_elems = 3; + unsigned char *clr_tbl; + unsigned short *red_tbl = NULL, *green_tbl = NULL, *blue_tbl = NULL; + uint32 row, clr; + + int c; + extern int optind; + extern char* optarg; + + while ((c = getopt(argc, argv, "c:r:o:h")) != -1) { + switch (c) { + case 'c': /* compression scheme */ + if (!processCompressOptions(optarg)) + usage(); + break; + case 'r': /* rows/strip */ + rowsperstrip = atoi(optarg); + break; + case 'o': + outfilename = optarg; + break; + case 'h': + usage(); + default: + break; + } + } + + if (argc - optind < 2) + usage(); + + if (outfilename == NULL) + outfilename = argv[argc-1]; + out = TIFFOpen(outfilename, "w"); + if (out == NULL) { + TIFFError(infilename, "Cannot open file %s for output", + outfilename); + goto bad3; + } + + + while (optind < argc-1) { + infilename = argv[optind]; + optind++; + + fd = open(infilename, O_RDONLY|O_BINARY, 0); + if (fd < 0) { + TIFFError(infilename, "Cannot open input file"); + return -1; + } + + read(fd, file_hdr.bType, 2); + if(file_hdr.bType[0] != 'B' || file_hdr.bType[1] != 'M') { + TIFFError(infilename, "File is not BMP"); + goto bad; + } + +/* -------------------------------------------------------------------- */ +/* Read the BMPFileHeader. We need iOffBits value only */ +/* -------------------------------------------------------------------- */ + lseek(fd, 10, SEEK_SET); + read(fd, &file_hdr.iOffBits, 4); +#ifdef WORDS_BIGENDIAN + TIFFSwabLong(&file_hdr.iOffBits); +#endif + fstat(fd, &instat); + file_hdr.iSize = instat.st_size; + +/* -------------------------------------------------------------------- */ +/* Read the BMPInfoHeader. */ +/* -------------------------------------------------------------------- */ + + lseek(fd, BFH_SIZE, SEEK_SET); + read(fd, &info_hdr.iSize, 4); +#ifdef WORDS_BIGENDIAN + TIFFSwabLong(&info_hdr.iSize); +#endif + + if (info_hdr.iSize == BIH_WIN4SIZE) + bmp_type = BMPT_WIN4; + else if (info_hdr.iSize == BIH_OS21SIZE) + bmp_type = BMPT_OS21; + else if (info_hdr.iSize == BIH_OS22SIZE + || info_hdr.iSize == 16) + bmp_type = BMPT_OS22; + else + bmp_type = BMPT_WIN5; + + if (bmp_type == BMPT_WIN4 + || bmp_type == BMPT_WIN5 + || bmp_type == BMPT_OS22) { + read(fd, &info_hdr.iWidth, 4); + read(fd, &info_hdr.iHeight, 4); + read(fd, &info_hdr.iPlanes, 2); + read(fd, &info_hdr.iBitCount, 2); + read(fd, &info_hdr.iCompression, 4); + read(fd, &info_hdr.iSizeImage, 4); + read(fd, &info_hdr.iXPelsPerMeter, 4); + read(fd, &info_hdr.iYPelsPerMeter, 4); + read(fd, &info_hdr.iClrUsed, 4); + read(fd, &info_hdr.iClrImportant, 4); +#ifdef WORDS_BIGENDIAN + TIFFSwabLong((uint32*) &info_hdr.iWidth); + TIFFSwabLong((uint32*) &info_hdr.iHeight); + TIFFSwabShort((uint16*) &info_hdr.iPlanes); + TIFFSwabShort((uint16*) &info_hdr.iBitCount); + TIFFSwabLong((uint32*) &info_hdr.iCompression); + TIFFSwabLong((uint32*) &info_hdr.iSizeImage); + TIFFSwabLong((uint32*) &info_hdr.iXPelsPerMeter); + TIFFSwabLong((uint32*) &info_hdr.iYPelsPerMeter); + TIFFSwabLong((uint32*) &info_hdr.iClrUsed); + TIFFSwabLong((uint32*) &info_hdr.iClrImportant); +#endif + n_clr_elems = 4; + } + + if (bmp_type == BMPT_OS22) { + /* + * FIXME: different info in different documents + * regarding this! + */ + n_clr_elems = 3; + } + + if (bmp_type == BMPT_OS21) { + int16 iShort; + + read(fd, &iShort, 2); +#ifdef WORDS_BIGENDIAN + TIFFSwabShort((uint16*) &iShort); +#endif + info_hdr.iWidth = iShort; + read(fd, &iShort, 2); +#ifdef WORDS_BIGENDIAN + TIFFSwabShort((uint16*) &iShort); +#endif + info_hdr.iHeight = iShort; + read(fd, &iShort, 2); +#ifdef WORDS_BIGENDIAN + TIFFSwabShort((uint16*) &iShort); +#endif + info_hdr.iPlanes = iShort; + read(fd, &iShort, 2); +#ifdef WORDS_BIGENDIAN + TIFFSwabShort((uint16*) &iShort); +#endif + info_hdr.iBitCount = iShort; + info_hdr.iCompression = BMPC_RGB; + n_clr_elems = 3; + } + + if (info_hdr.iBitCount != 1 && info_hdr.iBitCount != 4 && + info_hdr.iBitCount != 8 && info_hdr.iBitCount != 16 && + info_hdr.iBitCount != 24 && info_hdr.iBitCount != 32) { + TIFFError(infilename, + "Cannot process BMP file with bit count %d", + info_hdr.iBitCount); + close(fd); + return 0; + } + + width = info_hdr.iWidth; + length = (info_hdr.iHeight > 0) ? info_hdr.iHeight : -info_hdr.iHeight; + + switch (info_hdr.iBitCount) + { + case 1: + case 4: + case 8: + nbands = 1; + depth = info_hdr.iBitCount; + photometric = PHOTOMETRIC_PALETTE; + /* Allocate memory for colour table and read it. */ + if (info_hdr.iClrUsed) + clr_tbl_size = + ((uint32)(1<<depth)<info_hdr.iClrUsed) + ? (uint32) (1 << depth) + : info_hdr.iClrUsed; + else + clr_tbl_size = 1 << depth; + clr_tbl = (unsigned char *) + _TIFFmalloc(n_clr_elems * clr_tbl_size); + if (!clr_tbl) { + TIFFError(infilename, + "Can't allocate space for color table"); + goto bad; + } + + lseek(fd, BFH_SIZE + info_hdr.iSize, SEEK_SET); + read(fd, clr_tbl, n_clr_elems * clr_tbl_size); + + red_tbl = (unsigned short*) + _TIFFmalloc(1<<depth * sizeof(unsigned short)); + if (!red_tbl) { + TIFFError(infilename, + "Can't allocate space for red component table"); + _TIFFfree(clr_tbl); + goto bad1; + } + green_tbl = (unsigned short*) + _TIFFmalloc(1<<depth * sizeof(unsigned short)); + if (!green_tbl) { + TIFFError(infilename, + "Can't allocate space for green component table"); + _TIFFfree(clr_tbl); + goto bad2; + } + blue_tbl = (unsigned short*) + _TIFFmalloc(1<<depth * sizeof(unsigned short)); + if (!blue_tbl) { + TIFFError(infilename, + "Can't allocate space for blue component table"); + _TIFFfree(clr_tbl); + goto bad3; + } + + for(clr = 0; clr < clr_tbl_size; clr++) { + red_tbl[clr] = 257*clr_tbl[clr*n_clr_elems+2]; + green_tbl[clr] = 257*clr_tbl[clr*n_clr_elems+1]; + blue_tbl[clr] = 257*clr_tbl[clr*n_clr_elems]; + } + + _TIFFfree(clr_tbl); + break; + case 16: + case 24: + nbands = 3; + depth = info_hdr.iBitCount / nbands; + photometric = PHOTOMETRIC_RGB; + break; + case 32: + nbands = 3; + depth = 8; + photometric = PHOTOMETRIC_RGB; + break; + default: + break; + } + +/* -------------------------------------------------------------------- */ +/* Create output file. */ +/* -------------------------------------------------------------------- */ + + TIFFSetField(out, TIFFTAG_IMAGEWIDTH, width); + TIFFSetField(out, TIFFTAG_IMAGELENGTH, length); + TIFFSetField(out, TIFFTAG_ORIENTATION, ORIENTATION_TOPLEFT); + TIFFSetField(out, TIFFTAG_SAMPLESPERPIXEL, nbands); + TIFFSetField(out, TIFFTAG_BITSPERSAMPLE, depth); + TIFFSetField(out, TIFFTAG_PLANARCONFIG, PLANARCONFIG_CONTIG); + TIFFSetField(out, TIFFTAG_PHOTOMETRIC, photometric); + TIFFSetField(out, TIFFTAG_ROWSPERSTRIP, + TIFFDefaultStripSize(out, rowsperstrip)); + + if (red_tbl && green_tbl && blue_tbl) { + TIFFSetField(out, TIFFTAG_COLORMAP, + red_tbl, green_tbl, blue_tbl); + } + + if (compression == (uint16) -1) + compression = COMPRESSION_PACKBITS; + TIFFSetField(out, TIFFTAG_COMPRESSION, compression); + switch (compression) { + case COMPRESSION_JPEG: + if (photometric == PHOTOMETRIC_RGB + && jpegcolormode == JPEGCOLORMODE_RGB) + photometric = PHOTOMETRIC_YCBCR; + TIFFSetField(out, TIFFTAG_JPEGQUALITY, quality); + TIFFSetField(out, TIFFTAG_JPEGCOLORMODE, jpegcolormode); + break; + case COMPRESSION_LZW: + case COMPRESSION_DEFLATE: + if (predictor != 0) + TIFFSetField(out, TIFFTAG_PREDICTOR, predictor); + break; + } + +/* -------------------------------------------------------------------- */ +/* Read uncompressed image data. */ +/* -------------------------------------------------------------------- */ + + if (info_hdr.iCompression == BMPC_RGB) { + uint32 offset, size; + char *scanbuf; + + /* XXX: Avoid integer overflow. We can calculate size + * in one step using + * + * size = ((width * info_hdr.iBitCount + 31) & ~31) / 8 + * + * formulae, but we should check for overflow + * conditions during calculation. + */ + size = width * info_hdr.iBitCount + 31; + if (!width || !info_hdr.iBitCount + || (size - 31) / info_hdr.iBitCount != width ) { + TIFFError(infilename, + "Wrong image parameters; can't " + "allocate space for scanline buffer"); + goto bad3; + } + size = (size & ~31) / 8; + + scanbuf = (char *) _TIFFmalloc(size); + if (!scanbuf) { + TIFFError(infilename, + "Can't allocate space for scanline buffer"); + goto bad3; + } + + for (row = 0; row < length; row++) { + if (info_hdr.iHeight > 0) + offset = file_hdr.iOffBits+(length-row-1)*size; + else + offset = file_hdr.iOffBits + row * size; + if (lseek(fd, offset, SEEK_SET) == (off_t)-1) { + TIFFError(infilename, + "scanline %lu: Seek error", + (unsigned long) row); + break; + } + + if (read(fd, scanbuf, size) < 0) { + TIFFError(infilename, + "scanline %lu: Read error", + (unsigned long) row); + break; + } + + rearrangePixels(scanbuf, width, info_hdr.iBitCount); + + if (TIFFWriteScanline(out, scanbuf, row, 0)<0) { + TIFFError(infilename, + "scanline %lu: Write error", + (unsigned long) row); + break; + } + } + + _TIFFfree(scanbuf); + +/* -------------------------------------------------------------------- */ +/* Read compressed image data. */ +/* -------------------------------------------------------------------- */ + + } else if ( info_hdr.iCompression == BMPC_RLE8 + || info_hdr.iCompression == BMPC_RLE4 ) { + uint32 i, j, k, runlength; + uint32 compr_size, uncompr_size; + unsigned char *comprbuf; + unsigned char *uncomprbuf; + + compr_size = file_hdr.iSize - file_hdr.iOffBits; + uncompr_size = width * length; + comprbuf = (unsigned char *) _TIFFmalloc( compr_size ); + if (!comprbuf) { + TIFFError(infilename, + "Can't allocate space for compressed scanline buffer"); + goto bad3; + } + uncomprbuf = (unsigned char *)_TIFFmalloc(uncompr_size); + if (!uncomprbuf) { + TIFFError(infilename, + "Can't allocate space for uncompressed scanline buffer"); + goto bad3; + } + + lseek(fd, file_hdr.iOffBits, SEEK_SET); + read(fd, comprbuf, compr_size); + i = 0; + j = 0; + if (info_hdr.iBitCount == 8) { /* RLE8 */ + while(j < uncompr_size && i < compr_size) { + if ( comprbuf[i] ) { + runlength = comprbuf[i++]; + while( runlength > 0 + && j < uncompr_size + && i < compr_size ) { + uncomprbuf[j++] = comprbuf[i]; + runlength--; + } + i++; + } else { + i++; + if (comprbuf[i] == 0) /* Next scanline */ + i++; + else if (comprbuf[i] == 1) /* End of image */ + break; + else if (comprbuf[i] == 2) { /* Move to... */ + i++; + if (i < compr_size - 1) { + j+=comprbuf[i]+comprbuf[i+1]*width; + i += 2; + } + else + break; + } else { /* Absolute mode */ + runlength = comprbuf[i++]; + for (k = 0; k < runlength && j < uncompr_size && i < compr_size; k++) + uncomprbuf[j++] = comprbuf[i++]; + if ( k & 0x01 ) + i++; + } + } + } + } + else { /* RLE4 */ + while( j < uncompr_size && i < compr_size ) { + if ( comprbuf[i] ) { + runlength = comprbuf[i++]; + while( runlength > 0 && j < uncompr_size && i < compr_size ) { + if ( runlength & 0x01 ) + uncomprbuf[j++] = (comprbuf[i] & 0xF0) >> 4; + else + uncomprbuf[j++] = comprbuf[i] & 0x0F; + runlength--; + } + i++; + } else { + i++; + if (comprbuf[i] == 0) /* Next scanline */ + i++; + else if (comprbuf[i] == 1) /* End of image */ + break; + else if (comprbuf[i] == 2) { /* Move to... */ + i++; + if (i < compr_size - 1) { + j+=comprbuf[i]+comprbuf[i+1]*width; + i += 2; + } + else + break; + } else { /* Absolute mode */ + runlength = comprbuf[i++]; + for (k = 0; k < runlength && j < uncompr_size && i < compr_size; k++) { + if (k & 0x01) + uncomprbuf[j++] = comprbuf[i++] & 0x0F; + else + uncomprbuf[j++] = (comprbuf[i] & 0xF0) >> 4; + } + if (k & 0x01) + i++; + } + } + } + } + + _TIFFfree(comprbuf); + + for (row = 0; row < length; row++) { + if (TIFFWriteScanline(out, + uncomprbuf + (length - row - 1) * width, + row, 0) < 0) { + TIFFError(infilename, + "scanline %lu: Write error.\n", + (unsigned long) row); + } + } + + _TIFFfree(uncomprbuf); + } + TIFFWriteDirectory(out); + if (blue_tbl) { + _TIFFfree(blue_tbl); + blue_tbl=NULL; + } + if (green_tbl) { + _TIFFfree(green_tbl); + green_tbl=NULL; + } + if (red_tbl) { + _TIFFfree(red_tbl); + red_tbl=NULL; + } + } + +bad3: + if (blue_tbl) + _TIFFfree(blue_tbl); +bad2: + if (green_tbl) + _TIFFfree(green_tbl); +bad1: + if (red_tbl) + _TIFFfree(red_tbl); +bad: + close(fd); + + if (out) + TIFFClose(out); + return 0; +} + +/* + * Image data in BMP file stored in BGR (or ABGR) format. We should rearrange + * pixels to RGB (RGBA) format. + */ +static void +rearrangePixels(char *buf, uint32 width, uint32 bit_count) +{ + char tmp; + uint32 i; + + switch(bit_count) { + case 16: /* FIXME: need a sample file */ + break; + case 24: + for (i = 0; i < width; i++, buf += 3) { + tmp = *buf; + *buf = *(buf + 2); + *(buf + 2) = tmp; + } + break; + case 32: + { + char *buf1 = buf; + + for (i = 0; i < width; i++, buf += 4) { + tmp = *buf; + *buf1++ = *(buf + 2); + *buf1++ = *(buf + 1); + *buf1++ = tmp; + } + } + break; + default: + break; + } +} + +static int +processCompressOptions(char* opt) +{ + if (strcmp(opt, "none") == 0) + compression = COMPRESSION_NONE; + else if (strcmp(opt, "packbits") == 0) + compression = COMPRESSION_PACKBITS; + else if (strncmp(opt, "jpeg", 4) == 0) { + char* cp = strchr(opt, ':'); + + compression = COMPRESSION_JPEG; + while( cp ) + { + if (isdigit((int)cp[1])) + quality = atoi(cp+1); + else if (cp[1] == 'r' ) + jpegcolormode = JPEGCOLORMODE_RAW; + else + usage(); + + cp = strchr(cp+1,':'); + } + } else if (strncmp(opt, "lzw", 3) == 0) { + char* cp = strchr(opt, ':'); + if (cp) + predictor = atoi(cp+1); + compression = COMPRESSION_LZW; + } else if (strncmp(opt, "zip", 3) == 0) { + char* cp = strchr(opt, ':'); + if (cp) + predictor = atoi(cp+1); + compression = COMPRESSION_DEFLATE; + } else + return (0); + return (1); +} + +static char* stuff[] = { +"bmp2tiff --- convert Windows BMP files to TIFF", +"usage: bmp2tiff [options] input.bmp [input2.bmp ...] output.tif", +"where options are:", +" -r # make each strip have no more than # rows", +"", +" -c lzw[:opts] compress output with Lempel-Ziv & Welch encoding", +" -c zip[:opts] compress output with deflate encoding", +" -c jpeg[:opts]compress output with JPEG encoding", +" -c packbits compress output with packbits encoding", +" -c none use no compression algorithm on output", +"", +"JPEG options:", +" # set compression quality level (0-100, default 75)", +" r output color image as RGB rather than YCbCr", +"For example, -c jpeg:r:50 to get JPEG-encoded RGB data with 50% comp. quality", +"", +"LZW and deflate options:", +" # set predictor value", +"For example, -c lzw:2 to get LZW-encoded data with horizontal differencing", +" -o out.tif write output to out.tif", +" -h this help message", +NULL +}; + +static void +usage(void) +{ + 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(-1); +} + +/* vim: set ts=8 sts=8 sw=8 noet: */ +/* + * Local Variables: + * mode: c + * c-basic-offset: 8 + * fill-column: 78 + * End: + */ |