9 tiff.c - implements reading and writing tiff files, uses io layer.
13 io_glue *ig = io_new_fd( fd );
14 i_img *im = i_readtiff_wiol(ig, -1); // no limit on how much is read
16 io_glue *ig = io_new_fd( fd );
17 return_code = i_writetiff_wiol(im, ig);
21 tiff.c implements the basic functions to read and write tiff files.
22 It uses the iolayer and needs either a seekable source or an entire
25 =head1 FUNCTION REFERENCE
27 Some of these functions are internal.
34 #define byteswap_macro(x) \
35 ((((x) & 0xff000000) >> 24) | (((x) & 0x00ff0000) >> 8) | \
36 (((x) & 0x0000ff00) << 8) | (((x) & 0x000000ff) << 24))
43 static struct tag_name text_tag_names[] =
45 { "tiff_documentname", TIFFTAG_DOCUMENTNAME, },
46 { "tiff_imagedescription", TIFFTAG_IMAGEDESCRIPTION, },
47 { "tiff_make", TIFFTAG_MAKE, },
48 { "tiff_model", TIFFTAG_MODEL, },
49 { "tiff_pagename", TIFFTAG_PAGENAME, },
50 { "tiff_software", TIFFTAG_SOFTWARE, },
51 { "tiff_datetime", TIFFTAG_DATETIME, },
52 { "tiff_artist", TIFFTAG_ARTIST, },
53 { "tiff_hostcomputer", TIFFTAG_HOSTCOMPUTER, },
56 static const int text_tag_count =
57 sizeof(text_tag_names) / sizeof(*text_tag_names);
59 static void error_handler(char const *module, char const *fmt, va_list ap) {
60 i_push_errorvf(0, fmt, ap);
63 #define WARN_BUFFER_LIMIT 10000
64 static char *warn_buffer = NULL;
65 static int warn_buffer_size = 0;
67 static void warn_handler(char const *module, char const *fmt, va_list ap) {
72 vsnprintf(buf, sizeof(buf), fmt, ap);
74 vsprintf(buf, fmt, ap);
76 if (!warn_buffer || strlen(warn_buffer)+strlen(buf)+2 > warn_buffer_size) {
77 int new_size = warn_buffer_size + strlen(buf) + 2;
78 char *old_buffer = warn_buffer;
79 if (new_size > WARN_BUFFER_LIMIT) {
80 new_size = WARN_BUFFER_LIMIT;
82 warn_buffer = myrealloc(warn_buffer, new_size);
83 if (!old_buffer) *warn_buffer = '\0';
84 warn_buffer_size = new_size;
86 if (strlen(warn_buffer)+strlen(buf)+2 <= warn_buffer_size) {
87 strcat(warn_buffer, buf);
88 strcat(warn_buffer, "\n");
92 static int save_tiff_tags(TIFF *tif, i_img *im);
94 static void expand_4bit_hl(unsigned char *buf, int count);
96 static void pack_4bit_hl(unsigned char *buf, int count);
99 static toff_t sizeproc(thandle_t x) {
105 =item comp_seek(h, o, w)
107 Compatability for 64 bit systems like latest freebsd (internal)
109 h - tiff handle, cast an io_glue object
118 comp_seek(thandle_t h, toff_t o, int w) {
119 io_glue *ig = (io_glue*)h;
120 return (toff_t) ig->seekcb(ig, o, w);
124 =item comp_mmap(thandle_t, tdata_t*, toff_t*)
128 This shouldn't ever be called but newer tifflibs want it anyway.
135 comp_mmap(thandle_t h, tdata_t*p, toff_t*off) {
140 =item comp_munmap(thandle_t h, tdata_t p, toff_t off)
144 This shouldn't ever be called but newer tifflibs want it anyway.
150 comp_munmap(thandle_t h, tdata_t p, toff_t off) {
154 static i_img *read_one_tiff(TIFF *tif) {
156 uint32 width, height;
158 uint32* raster = NULL;
162 int gotXres, gotYres;
164 uint16 bits_per_sample;
170 TIFFGetField(tif, TIFFTAG_IMAGEWIDTH, &width);
171 TIFFGetField(tif, TIFFTAG_IMAGELENGTH, &height);
172 TIFFGetFieldDefaulted(tif, TIFFTAG_SAMPLESPERPIXEL, &channels);
173 tiled = TIFFIsTiled(tif);
174 TIFFGetFieldDefaulted(tif, TIFFTAG_PHOTOMETRIC, &photometric);
175 TIFFGetFieldDefaulted(tif, TIFFTAG_BITSPERSAMPLE, &bits_per_sample);
177 mm_log((1, "i_readtiff_wiol: width=%d, height=%d, channels=%d\n", width, height, channels));
178 mm_log((1, "i_readtiff_wiol: %stiled\n", tiled?"":"not "));
179 mm_log((1, "i_readtiff_wiol: %sbyte swapped\n", TIFFIsByteSwapped(tif)?"":"not "));
181 if (photometric == PHOTOMETRIC_PALETTE && bits_per_sample <= 8) {
183 im = i_img_pal_new(width, height, channels, 256);
186 im = i_img_empty_ch(NULL, width, height, channels);
192 /* general metadata */
193 i_tags_addn(&im->tags, "tiff_bitspersample", 0, bits_per_sample);
194 i_tags_addn(&im->tags, "tiff_photometric", 0, photometric);
196 /* resolution tags */
197 TIFFGetFieldDefaulted(tif, TIFFTAG_RESOLUTIONUNIT, &resunit);
198 gotXres = TIFFGetField(tif, TIFFTAG_XRESOLUTION, &xres);
199 gotYres = TIFFGetField(tif, TIFFTAG_YRESOLUTION, &yres);
200 if (gotXres || gotYres) {
205 i_tags_addn(&im->tags, "tiff_resolutionunit", 0, resunit);
206 if (resunit == RESUNIT_CENTIMETER) {
207 /* from dots per cm to dpi */
210 i_tags_add(&im->tags, "tiff_resolutionunit_name", 0, "centimeter", -1, 0);
212 else if (resunit == RESUNIT_NONE) {
213 i_tags_addn(&im->tags, "i_aspect_only", 0, 1);
214 i_tags_add(&im->tags, "tiff_resolutionunit_name", 0, "none", -1, 0);
216 else if (resunit == RESUNIT_INCH) {
217 i_tags_add(&im->tags, "tiff_resolutionunit_name", 0, "inch", -1, 0);
220 i_tags_add(&im->tags, "tiff_resolutionunit_name", 0, "unknown", -1, 0);
222 /* tifflib doesn't seem to provide a way to get to the original rational
223 value of these, which would let me provide a more reasonable
224 precision. So make up a number. */
225 i_tags_set_float2(&im->tags, "i_xres", 0, xres, 6);
226 i_tags_set_float2(&im->tags, "i_yres", 0, yres, 6);
230 for (i = 0; i < text_tag_count; ++i) {
232 if (TIFFGetField(tif, text_tag_names[i].tag, &data)) {
233 mm_log((1, "i_readtiff_wiol: tag %d has value %s\n",
234 text_tag_names[i].tag, data));
235 i_tags_add(&im->tags, text_tag_names[i].name, 0, data,
240 i_tags_add(&im->tags, "i_format", 0, "tiff", -1, 0);
241 if (warn_buffer && *warn_buffer) {
242 i_tags_add(&im->tags, "i_warning", 0, warn_buffer, -1, 0);
246 /* TIFFPrintDirectory(tif, stdout, 0); good for debugging */
248 if (photometric == PHOTOMETRIC_PALETTE &&
249 (bits_per_sample == 4 || bits_per_sample == 8)) {
254 unsigned char *buffer;
256 if (!TIFFGetField(tif, TIFFTAG_COLORMAP, maps+0, maps+1, maps+2)) {
257 i_push_error(0, "Cannot get colormap for paletted image");
261 buffer = (unsigned char *)_TIFFmalloc(width+2);
263 i_push_error(0, "out of memory");
268 memset(used, 0, sizeof(used));
269 while (row < height && TIFFReadScanline(tif, buffer, row, 0) > 0) {
270 if (bits_per_sample == 4)
271 expand_4bit_hl(buffer, (width+1)/2);
272 for (col = 0; col < width; ++col) {
273 used[buffer[col]] = 1;
275 i_ppal(im, 0, width, row, buffer);
281 /* Ideally we'd optimize the palette, but that could be expensive
282 since we'd have to re-index every pixel.
284 Optimizing the palette (even at this level) might not
285 be what the user wants, so I don't do it.
287 We'll add a function to optimize a paletted image instead.
289 maxused = (1 << bits_per_sample)-1;
291 while (maxused >= 0 && !used[maxused])
294 for (i = 0; i < 1 << bits_per_sample; ++i) {
296 for (ch = 0; ch < 3; ++ch) {
297 c.channel[ch] = Sample16To8(maps[ch][i]);
299 i_addcolors(im, &c, 1);
307 uint32 tile_width, tile_height;
309 TIFFGetField(tif, TIFFTAG_TILEWIDTH, &tile_width);
310 TIFFGetField(tif, TIFFTAG_TILELENGTH, &tile_height);
311 mm_log((1, "i_readtiff_wiol: tile_width=%d, tile_height=%d\n", tile_width, tile_height));
313 raster = (uint32*)_TIFFmalloc(tile_width * tile_height * sizeof (uint32));
316 i_push_error(0, "No space for raster buffer");
320 for( row = 0; row < height; row += tile_height ) {
321 for( col = 0; ok && col < width; col += tile_width ) {
322 uint32 i_row, x, newrows, newcols;
324 /* Read the tile into an RGBA array */
325 if (!TIFFReadRGBATile(tif, col, row, raster)) {
329 newrows = (row+tile_height > height) ? height-row : tile_height;
330 mm_log((1, "i_readtiff_wiol: newrows=%d\n", newrows));
331 newcols = (col+tile_width > width ) ? width-row : tile_width;
332 for( i_row = 0; i_row < tile_height; i_row++ ) {
333 for(x = 0; x < newcols; x++) {
335 uint32 temp = raster[x+tile_width*(tile_height-i_row-1)];
336 val.rgba.r = TIFFGetR(temp);
337 val.rgba.g = TIFFGetG(temp);
338 val.rgba.b = TIFFGetB(temp);
339 val.rgba.a = TIFFGetA(temp);
340 i_ppix(im, col+x, row+i_row, &val);
346 uint32 rowsperstrip, row;
347 int rc = TIFFGetField(tif, TIFFTAG_ROWSPERSTRIP, &rowsperstrip);
348 mm_log((1, "i_readtiff_wiol: rowsperstrip=%d rc = %d\n", rowsperstrip, rc));
350 if (rc != 1 || rowsperstrip==-1) {
351 rowsperstrip = height;
354 raster = (uint32*)_TIFFmalloc(width * rowsperstrip * sizeof (uint32));
357 i_push_error(0, "No space for raster buffer");
361 for( row = 0; row < height; row += rowsperstrip ) {
362 uint32 newrows, i_row;
364 if (!TIFFReadRGBAStrip(tif, row, raster)) {
369 newrows = (row+rowsperstrip > height) ? height-row : rowsperstrip;
370 mm_log((1, "newrows=%d\n", newrows));
372 for( i_row = 0; i_row < newrows; i_row++ ) {
374 for(x = 0; x<width; x++) {
376 uint32 temp = raster[x+width*(newrows-i_row-1)];
377 val.rgba.r = TIFFGetR(temp);
378 val.rgba.g = TIFFGetG(temp);
379 val.rgba.b = TIFFGetB(temp);
380 val.rgba.a = TIFFGetA(temp);
381 i_ppix(im, x, i_row+row, &val);
388 mm_log((1, "i_readtiff_wiol: error during reading\n"));
389 i_tags_addn(&im->tags, "i_incomplete", 0, 1);
398 =item i_readtiff_wiol(im, ig)
403 i_readtiff_wiol(io_glue *ig, int length, int page) {
405 TIFFErrorHandler old_handler;
406 TIFFErrorHandler old_warn_handler;
410 old_handler = TIFFSetErrorHandler(error_handler);
411 old_warn_handler = TIFFSetWarningHandler(warn_handler);
415 /* Add code to get the filename info from the iolayer */
416 /* Also add code to check for mmapped code */
418 io_glue_commit_types(ig);
419 mm_log((1, "i_readtiff_wiol(ig %p, length %d)\n", ig, length));
421 tif = TIFFClientOpen("(Iolayer)",
424 (TIFFReadWriteProc) ig->readcb,
425 (TIFFReadWriteProc) ig->writecb,
426 (TIFFSeekProc) comp_seek,
427 (TIFFCloseProc) ig->closecb,
428 ig->sizecb ? (TIFFSizeProc) ig->sizecb : (TIFFSizeProc) sizeproc,
429 (TIFFMapFileProc) comp_mmap,
430 (TIFFUnmapFileProc) comp_munmap);
433 mm_log((1, "i_readtiff_wiol: Unable to open tif file\n"));
434 i_push_error(0, "Error opening file");
435 TIFFSetErrorHandler(old_handler);
436 TIFFSetWarningHandler(old_warn_handler);
441 if (!TIFFSetDirectory(tif, page)) {
442 mm_log((1, "i_readtiff_wiol: Unable to switch to directory %d\n", page));
443 i_push_errorf(0, "could not switch to page %d", page);
444 TIFFSetErrorHandler(old_handler);
445 TIFFSetWarningHandler(old_warn_handler);
451 im = read_one_tiff(tif);
453 if (TIFFLastDirectory(tif)) mm_log((1, "Last directory of tiff file\n"));
454 TIFFSetErrorHandler(old_handler);
455 TIFFSetWarningHandler(old_warn_handler);
461 =item i_readtiff_multi_wiol(ig, length, *count)
463 Reads multiple images from a TIFF.
468 i_readtiff_multi_wiol(io_glue *ig, int length, int *count) {
470 TIFFErrorHandler old_handler;
471 TIFFErrorHandler old_warn_handler;
472 i_img **results = NULL;
473 int result_alloc = 0;
477 old_handler = TIFFSetErrorHandler(error_handler);
478 old_warn_handler = TIFFSetWarningHandler(warn_handler);
482 /* Add code to get the filename info from the iolayer */
483 /* Also add code to check for mmapped code */
485 io_glue_commit_types(ig);
486 mm_log((1, "i_readtiff_wiol(ig %p, length %d)\n", ig, length));
488 tif = TIFFClientOpen("(Iolayer)",
491 (TIFFReadWriteProc) ig->readcb,
492 (TIFFReadWriteProc) ig->writecb,
493 (TIFFSeekProc) comp_seek,
494 (TIFFCloseProc) ig->closecb,
495 ig->sizecb ? (TIFFSizeProc) ig->sizecb : (TIFFSizeProc) sizeproc,
496 (TIFFMapFileProc) comp_mmap,
497 (TIFFUnmapFileProc) comp_munmap);
500 mm_log((1, "i_readtiff_wiol: Unable to open tif file\n"));
501 i_push_error(0, "Error opening file");
502 TIFFSetErrorHandler(old_handler);
503 TIFFSetWarningHandler(old_warn_handler);
509 i_img *im = read_one_tiff(tif);
512 if (++*count > result_alloc) {
513 if (result_alloc == 0) {
515 results = mymalloc(result_alloc * sizeof(i_img *));
520 newresults = myrealloc(results, result_alloc * sizeof(i_img *));
522 i_img_destroy(im); /* don't leak it */
525 results = newresults;
528 results[*count-1] = im;
529 } while (TIFFSetDirectory(tif, ++dirnum));
531 TIFFSetWarningHandler(old_warn_handler);
532 TIFFSetErrorHandler(old_handler);
538 i_writetiff_low_faxable(TIFF *tif, i_img *im, int fine) {
539 uint32 width, height;
540 unsigned char *linebuf = NULL;
545 float vres = fine ? 196 : 98;
551 switch (im->channels) {
561 /* This means a colorspace we don't handle yet */
562 mm_log((1, "i_writetiff_wiol_faxable: don't handle %d channel images.\n", im->channels));
566 /* Add code to get the filename info from the iolayer */
567 /* Also add code to check for mmapped code */
570 mm_log((1, "i_writetiff_wiol_faxable: width=%d, height=%d, channels=%d\n", width, height, im->channels));
572 if (!TIFFSetField(tif, TIFFTAG_IMAGEWIDTH, width) )
573 { mm_log((1, "i_writetiff_wiol_faxable: TIFFSetField width=%d failed\n", width)); return 0; }
574 if (!TIFFSetField(tif, TIFFTAG_IMAGELENGTH, height) )
575 { mm_log((1, "i_writetiff_wiol_faxable: TIFFSetField length=%d failed\n", height)); return 0; }
576 if (!TIFFSetField(tif, TIFFTAG_SAMPLESPERPIXEL, 1))
577 { mm_log((1, "i_writetiff_wiol_faxable: TIFFSetField samplesperpixel=1 failed\n")); return 0; }
578 if (!TIFFSetField(tif, TIFFTAG_ORIENTATION, ORIENTATION_TOPLEFT))
579 { mm_log((1, "i_writetiff_wiol_faxable: TIFFSetField Orientation=topleft\n")); return 0; }
580 if (!TIFFSetField(tif, TIFFTAG_BITSPERSAMPLE, 1) )
581 { mm_log((1, "i_writetiff_wiol_faxable: TIFFSetField bitpersample=1\n")); return 0; }
582 if (!TIFFSetField(tif, TIFFTAG_PLANARCONFIG, PLANARCONFIG_CONTIG))
583 { mm_log((1, "i_writetiff_wiol_faxable: TIFFSetField planarconfig\n")); return 0; }
584 if (!TIFFSetField(tif, TIFFTAG_PHOTOMETRIC, PHOTOMETRIC_MINISWHITE))
585 { mm_log((1, "i_writetiff_wiol_faxable: TIFFSetField photometric=%d\n", PHOTOMETRIC_MINISBLACK)); return 0; }
586 if (!TIFFSetField(tif, TIFFTAG_COMPRESSION, 3))
587 { mm_log((1, "i_writetiff_wiol_faxable: TIFFSetField compression=3\n")); return 0; }
589 linebuf = (unsigned char *)_TIFFmalloc( TIFFScanlineSize(tif) );
591 if (!TIFFSetField(tif, TIFFTAG_ROWSPERSTRIP, TIFFDefaultStripSize(tif, -1))) {
592 mm_log((1, "i_writetiff_wiol_faxable: TIFFSetField rowsperstrip=-1\n")); return 0; }
594 TIFFGetField(tif, TIFFTAG_ROWSPERSTRIP, &rowsperstrip);
595 TIFFGetField(tif, TIFFTAG_ROWSPERSTRIP, &rc);
597 mm_log((1, "i_writetiff_wiol_faxable: TIFFGetField rowsperstrip=%d\n", rowsperstrip));
598 mm_log((1, "i_writetiff_wiol_faxable: TIFFGetField scanlinesize=%d\n", TIFFScanlineSize(tif) ));
599 mm_log((1, "i_writetiff_wiol_faxable: TIFFGetField planarconfig=%d == %d\n", rc, PLANARCONFIG_CONTIG));
601 if (!TIFFSetField(tif, TIFFTAG_XRESOLUTION, (float)204))
602 { mm_log((1, "i_writetiff_wiol_faxable: TIFFSetField Xresolution=204\n")); return 0; }
603 if (!TIFFSetField(tif, TIFFTAG_YRESOLUTION, vres))
604 { mm_log((1, "i_writetiff_wiol_faxable: TIFFSetField Yresolution=196\n")); return 0; }
605 if (!TIFFSetField(tif, TIFFTAG_RESOLUTIONUNIT, RESUNIT_INCH)) {
606 mm_log((1, "i_writetiff_wiol_faxable: TIFFSetField ResolutionUnit=%d\n", RESUNIT_INCH)); return 0;
609 if (!save_tiff_tags(tif, im)) {
613 for (y=0; y<height; y++) {
615 for(x=0; x<width; x+=8) {
620 linebuf[linebufpos]=0;
621 bits = width-x; if(bits>8) bits=8;
622 i_gsamp(im, x, x+8, y, luma, &luma_chan, 1);
623 for(bitpos=0;bitpos<bits;bitpos++) {
624 linebuf[linebufpos] |= ((luma[bitpos] < 128) ? bitval : 0);
629 if (TIFFWriteScanline(tif, linebuf, y, 0) < 0) {
630 mm_log((1, "i_writetiff_wiol_faxable: TIFFWriteScanline failed.\n"));
634 if (linebuf) _TIFFfree(linebuf);
640 i_writetiff_low(TIFF *tif, i_img *im) {
641 uint32 width, height;
643 uint16 predictor = 0;
645 int jpegcolormode = JPEGCOLORMODE_RGB;
646 uint16 compression = COMPRESSION_PACKBITS;
649 uint32 rowsperstrip = (uint32) -1; /* Let library pick default */
650 unsigned char *linebuf = NULL;
655 int got_xres, got_yres, aspect_only, resunit;
657 uint16 bitspersample = 8;
658 uint16 samplesperpixel;
659 uint16 *colors = NULL;
663 channels = im->channels;
667 photometric = PHOTOMETRIC_MINISBLACK;
670 photometric = PHOTOMETRIC_RGB;
671 if (compression == COMPRESSION_JPEG && jpegcolormode == JPEGCOLORMODE_RGB) photometric = PHOTOMETRIC_YCBCR;
672 else if (im->type == i_palette_type) {
673 photometric = PHOTOMETRIC_PALETTE;
677 /* This means a colorspace we don't handle yet */
678 mm_log((1, "i_writetiff_wiol: don't handle %d channel images.\n", channels));
682 /* Add code to get the filename info from the iolayer */
683 /* Also add code to check for mmapped code */
685 /*io_glue_commit_types(ig);*/
686 /*mm_log((1, "i_writetiff_wiol(im 0x%p, ig 0x%p)\n", im, ig));*/
688 mm_log((1, "i_writetiff_low: width=%d, height=%d, channels=%d\n", width, height, channels));
690 if (!TIFFSetField(tif, TIFFTAG_IMAGEWIDTH, width) ) {
691 mm_log((1, "i_writetiff_wiol: TIFFSetField width=%d failed\n", width));
694 if (!TIFFSetField(tif, TIFFTAG_IMAGELENGTH, height) ) {
695 mm_log((1, "i_writetiff_wiol: TIFFSetField length=%d failed\n", height));
698 if (!TIFFSetField(tif, TIFFTAG_ORIENTATION, ORIENTATION_TOPLEFT)) {
699 mm_log((1, "i_writetiff_wiol: TIFFSetField Orientation=topleft\n"));
702 if (!TIFFSetField(tif, TIFFTAG_PLANARCONFIG, PLANARCONFIG_CONTIG)) {
703 mm_log((1, "i_writetiff_wiol: TIFFSetField planarconfig\n"));
706 if (!TIFFSetField(tif, TIFFTAG_PHOTOMETRIC, photometric)) {
707 mm_log((1, "i_writetiff_wiol: TIFFSetField photometric=%d\n", photometric));
710 if (!TIFFSetField(tif, TIFFTAG_COMPRESSION, compression)) {
711 mm_log((1, "i_writetiff_wiol: TIFFSetField compression=%d\n", compression));
714 samplesperpixel = channels;
715 if (photometric == PHOTOMETRIC_PALETTE) {
718 int count = i_colorcount(im);
727 size = 1 << bitspersample;
728 colors = (uint16 *)_TIFFmalloc(sizeof(uint16) * 3 * size);
730 out[1] = colors + size;
731 out[2] = colors + 2 * size;
733 for (i = 0; i < count; ++i) {
734 i_getcolors(im, i, &c, 1);
735 for (ch = 0; ch < 3; ++ch)
736 out[ch][i] = c.channel[ch] * 257;
738 for (; i < size; ++i) {
739 for (ch = 0; ch < 3; ++ch)
742 if (!TIFFSetField(tif, TIFFTAG_BITSPERSAMPLE, bitspersample)) {
743 mm_log((1, "i_writetiff_wiol: TIFFSetField bitpersample=%d\n",
747 if (!TIFFSetField(tif, TIFFTAG_COLORMAP, out[0], out[1], out[2])) {
748 mm_log((1, "i_writetiff_wiol: TIFFSetField colormap\n"));
753 if (!TIFFSetField(tif, TIFFTAG_BITSPERSAMPLE, bitspersample)) {
754 mm_log((1, "i_writetiff_wiol: TIFFSetField bitpersample=%d\n",
759 if (!TIFFSetField(tif, TIFFTAG_SAMPLESPERPIXEL, samplesperpixel)) {
760 mm_log((1, "i_writetiff_wiol: TIFFSetField samplesperpixel=%d failed\n", samplesperpixel));
764 switch (compression) {
765 case COMPRESSION_JPEG:
766 mm_log((1, "i_writetiff_wiol: jpeg compression\n"));
767 if (!TIFFSetField(tif, TIFFTAG_JPEGQUALITY, quality) ) {
768 mm_log((1, "i_writetiff_wiol: TIFFSetField jpegquality=%d\n", quality));
771 if (!TIFFSetField(tif, TIFFTAG_JPEGCOLORMODE, jpegcolormode)) {
772 mm_log((1, "i_writetiff_wiol: TIFFSetField jpegcolormode=%d\n", jpegcolormode));
776 case COMPRESSION_LZW:
777 mm_log((1, "i_writetiff_wiol: lzw compression\n"));
779 case COMPRESSION_DEFLATE:
780 mm_log((1, "i_writetiff_wiol: deflate compression\n"));
782 if (!TIFFSetField(tif, TIFFTAG_PREDICTOR, predictor)) {
783 mm_log((1, "i_writetiff_wiol: TIFFSetField predictor=%d\n", predictor));
787 case COMPRESSION_PACKBITS:
788 mm_log((1, "i_writetiff_wiol: packbits compression\n"));
791 mm_log((1, "i_writetiff_wiol: unknown compression %d\n", compression));
795 linebytes = channels * width;
796 linebytes = TIFFScanlineSize(tif) > linebytes ? linebytes
797 : TIFFScanlineSize(tif);
798 /* working space for the scanlines - we go from 8-bit/pixel to 4 */
799 if (photometric == PHOTOMETRIC_PALETTE && bitspersample == 4)
800 linebytes += linebytes + 1;
801 linebuf = (unsigned char *)_TIFFmalloc(linebytes);
803 if (!TIFFSetField(tif, TIFFTAG_ROWSPERSTRIP, TIFFDefaultStripSize(tif, rowsperstrip))) {
804 mm_log((1, "i_writetiff_wiol: TIFFSetField rowsperstrip=%d\n", rowsperstrip)); return 0; }
806 TIFFGetField(tif, TIFFTAG_ROWSPERSTRIP, &rowsperstrip);
807 TIFFGetField(tif, TIFFTAG_ROWSPERSTRIP, &rc);
809 mm_log((1, "i_writetiff_wiol: TIFFGetField rowsperstrip=%d\n", rowsperstrip));
810 mm_log((1, "i_writetiff_wiol: TIFFGetField scanlinesize=%d\n", TIFFScanlineSize(tif) ));
811 mm_log((1, "i_writetiff_wiol: TIFFGetField planarconfig=%d == %d\n", rc, PLANARCONFIG_CONTIG));
812 mm_log((1, "i_writetiff_wiol: bitspersample = %d\n", bitspersample));
814 got_xres = i_tags_get_float(&im->tags, "i_xres", 0, &xres);
815 got_yres = i_tags_get_float(&im->tags, "i_yres", 0, &yres);
816 if (!i_tags_get_int(&im->tags, "i_aspect_only", 0,&aspect_only))
818 if (!i_tags_get_int(&im->tags, "tiff_resolutionunit", 0, &resunit))
819 resunit = RESUNIT_INCH;
820 if (got_xres || got_yres) {
826 resunit = RESUNIT_NONE;
829 if (resunit == RESUNIT_CENTIMETER) {
834 resunit = RESUNIT_INCH;
837 if (!TIFFSetField(tif, TIFFTAG_XRESOLUTION, (float)xres)) {
838 i_push_error(0, "cannot set TIFFTAG_XRESOLUTION tag");
841 if (!TIFFSetField(tif, TIFFTAG_YRESOLUTION, (float)yres)) {
842 i_push_error(0, "cannot set TIFFTAG_YRESOLUTION tag");
845 if (!TIFFSetField(tif, TIFFTAG_RESOLUTIONUNIT, (uint16)resunit)) {
846 i_push_error(0, "cannot set TIFFTAG_RESOLUTIONUNIT tag");
851 if (!save_tiff_tags(tif, im)) {
855 if (photometric == PHOTOMETRIC_PALETTE) {
856 for (y = 0; y < height; ++y) {
857 i_gpal(im, 0, width, y, linebuf);
858 if (bitspersample == 4)
859 pack_4bit_hl(linebuf, width);
860 if (TIFFWriteScanline(tif, linebuf, y, 0) < 0) {
861 mm_log((1, "i_writetiff_wiol: TIFFWriteScanline failed.\n"));
862 if (linebuf) _TIFFfree(linebuf);
863 if (colors) _TIFFfree(colors);
869 for (y=0; y<height; y++) {
871 for(x=0; x<width; x++) {
872 (void) i_gpix(im, x, y,&val);
873 for(ch=0; ch<channels; ch++)
874 linebuf[ci++] = val.channel[ch];
876 if (TIFFWriteScanline(tif, linebuf, y, 0) < 0) {
877 mm_log((1, "i_writetiff_wiol: TIFFWriteScanline failed.\n"));
878 if (linebuf) _TIFFfree(linebuf);
879 if (colors) _TIFFfree(colors);
884 if (linebuf) _TIFFfree(linebuf);
885 if (colors) _TIFFfree(colors);
890 =item i_writetiff_multi_wiol(ig, imgs, count, fine_mode)
892 Stores an image in the iolayer object.
894 ig - io_object that defines source to write to
895 imgs,count - the images to write
901 i_writetiff_multi_wiol(io_glue *ig, i_img **imgs, int count) {
903 TIFFErrorHandler old_handler;
906 old_handler = TIFFSetErrorHandler(error_handler);
908 io_glue_commit_types(ig);
910 mm_log((1, "i_writetiff_multi_wiol(ig 0x%p, imgs 0x%p, count %d)\n",
913 /* FIXME: Enable the mmap interface */
915 tif = TIFFClientOpen("No name",
918 (TIFFReadWriteProc) ig->readcb,
919 (TIFFReadWriteProc) ig->writecb,
920 (TIFFSeekProc) comp_seek,
921 (TIFFCloseProc) ig->closecb,
922 ig->sizecb ? (TIFFSizeProc) ig->sizecb : (TIFFSizeProc) sizeproc,
923 (TIFFMapFileProc) comp_mmap,
924 (TIFFUnmapFileProc) comp_munmap);
929 mm_log((1, "i_writetiff_multi_wiol: Unable to open tif file for writing\n"));
930 i_push_error(0, "Could not create TIFF object");
931 TIFFSetErrorHandler(old_handler);
935 for (i = 0; i < count; ++i) {
936 if (!i_writetiff_low(tif, imgs[i])) {
938 TIFFSetErrorHandler(old_handler);
942 if (!TIFFWriteDirectory(tif)) {
943 i_push_error(0, "Cannot write TIFF directory");
945 TIFFSetErrorHandler(old_handler);
950 TIFFSetErrorHandler(old_handler);
951 (void) TIFFClose(tif);
957 =item i_writetiff_multi_wiol_faxable(ig, imgs, count, fine_mode)
959 Stores an image in the iolayer object.
961 ig - io_object that defines source to write to
962 imgs,count - the images to write
963 fine_mode - select fine or normal mode fax images
970 i_writetiff_multi_wiol_faxable(io_glue *ig, i_img **imgs, int count, int fine) {
973 TIFFErrorHandler old_handler;
975 old_handler = TIFFSetErrorHandler(error_handler);
977 io_glue_commit_types(ig);
979 mm_log((1, "i_writetiff_multi_wiol(ig 0x%p, imgs 0x%p, count %d)\n",
982 /* FIXME: Enable the mmap interface */
984 tif = TIFFClientOpen("No name",
987 (TIFFReadWriteProc) ig->readcb,
988 (TIFFReadWriteProc) ig->writecb,
989 (TIFFSeekProc) comp_seek,
990 (TIFFCloseProc) ig->closecb,
991 ig->sizecb ? (TIFFSizeProc) ig->sizecb : (TIFFSizeProc) sizeproc,
992 (TIFFMapFileProc) comp_mmap,
993 (TIFFUnmapFileProc) comp_munmap);
998 mm_log((1, "i_writetiff_mulit_wiol: Unable to open tif file for writing\n"));
999 i_push_error(0, "Could not create TIFF object");
1000 TIFFSetErrorHandler(old_handler);
1004 for (i = 0; i < count; ++i) {
1005 if (!i_writetiff_low_faxable(tif, imgs[i], fine)) {
1007 TIFFSetErrorHandler(old_handler);
1011 if (!TIFFWriteDirectory(tif)) {
1012 i_push_error(0, "Cannot write TIFF directory");
1014 TIFFSetErrorHandler(old_handler);
1019 (void) TIFFClose(tif);
1020 TIFFSetErrorHandler(old_handler);
1026 =item i_writetiff_wiol(im, ig)
1028 Stores an image in the iolayer object.
1030 im - image object to write out
1031 ig - io_object that defines source to write to
1036 i_writetiff_wiol(i_img *img, io_glue *ig) {
1038 TIFFErrorHandler old_handler;
1040 old_handler = TIFFSetErrorHandler(error_handler);
1042 io_glue_commit_types(ig);
1044 mm_log((1, "i_writetiff_wiol(img %p, ig 0x%p)\n", img, ig));
1046 /* FIXME: Enable the mmap interface */
1048 tif = TIFFClientOpen("No name",
1051 (TIFFReadWriteProc) ig->readcb,
1052 (TIFFReadWriteProc) ig->writecb,
1053 (TIFFSeekProc) comp_seek,
1054 (TIFFCloseProc) ig->closecb,
1055 ig->sizecb ? (TIFFSizeProc) ig->sizecb : (TIFFSizeProc) sizeproc,
1056 (TIFFMapFileProc) comp_mmap,
1057 (TIFFUnmapFileProc) comp_munmap);
1062 mm_log((1, "i_writetiff_wiol: Unable to open tif file for writing\n"));
1063 i_push_error(0, "Could not create TIFF object");
1064 TIFFSetErrorHandler(old_handler);
1068 if (!i_writetiff_low(tif, img)) {
1070 TIFFSetErrorHandler(old_handler);
1074 (void) TIFFClose(tif);
1075 TIFFSetErrorHandler(old_handler);
1083 =item i_writetiff_wiol_faxable(i_img *, io_glue *)
1085 Stores an image in the iolayer object in faxable tiff format.
1087 im - image object to write out
1088 ig - io_object that defines source to write to
1090 Note, this may be rewritten to use to simply be a call to a
1091 lower-level function that gives more options for writing tiff at some
1098 i_writetiff_wiol_faxable(i_img *im, io_glue *ig, int fine) {
1100 TIFFErrorHandler old_handler;
1102 old_handler = TIFFSetErrorHandler(error_handler);
1104 io_glue_commit_types(ig);
1106 mm_log((1, "i_writetiff_wiol(img %p, ig 0x%p)\n", im, ig));
1108 /* FIXME: Enable the mmap interface */
1110 tif = TIFFClientOpen("No name",
1113 (TIFFReadWriteProc) ig->readcb,
1114 (TIFFReadWriteProc) ig->writecb,
1115 (TIFFSeekProc) comp_seek,
1116 (TIFFCloseProc) ig->closecb,
1117 ig->sizecb ? (TIFFSizeProc) ig->sizecb : (TIFFSizeProc) sizeproc,
1118 (TIFFMapFileProc) comp_mmap,
1119 (TIFFUnmapFileProc) comp_munmap);
1124 mm_log((1, "i_writetiff_wiol: Unable to open tif file for writing\n"));
1125 i_push_error(0, "Could not create TIFF object");
1126 TIFFSetErrorHandler(old_handler);
1130 if (!i_writetiff_low_faxable(tif, im, fine)) {
1132 TIFFSetErrorHandler(old_handler);
1136 (void) TIFFClose(tif);
1137 TIFFSetErrorHandler(old_handler);
1142 static int save_tiff_tags(TIFF *tif, i_img *im) {
1145 for (i = 0; i < text_tag_count; ++i) {
1147 if (i_tags_find(&im->tags, text_tag_names[i].name, 0, &entry)) {
1148 if (!TIFFSetField(tif, text_tag_names[i].tag,
1149 im->tags.tags[entry].data)) {
1150 i_push_errorf(0, "cannot save %s to TIFF", text_tag_names[i].name);
1161 =item expand_4bit_hl(buf, count)
1163 Expands 4-bit/entry packed data into 1 byte/entry.
1165 buf must contain count bytes to be expanded and have 2*count bytes total
1168 The data is expanded in place.
1173 static void expand_4bit_hl(unsigned char *buf, int count) {
1174 while (--count >= 0) {
1175 buf[count*2+1] = buf[count] & 0xF;
1176 buf[count*2] = buf[count] >> 4;
1180 static void pack_4bit_hl(unsigned char *buf, int count) {
1183 buf[i/2] = (buf[i] << 4) + buf[i+1];
1193 Arnar M. Hrafnkelsson <addi@umich.edu>