/* Id */ /* * Copyright (c) 1988-1997 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. */ /* * TIFF Library. * * Directory Tag Get & Set Routines. * (and also some miscellaneous stuff) */ #include "tiffiop.h" /* * These are used in the backwards compatibility code... */ #define DATATYPE_VOID 0 /* !untyped data */ #define DATATYPE_INT 1 /* !signed integer data */ #define DATATYPE_UINT 2 /* !unsigned integer data */ #define DATATYPE_IEEEFP 3 /* !IEEE floating point data */ static void setByteArray(void** vpp, void* vp, size_t nmemb, size_t elem_size) { if (*vpp) _TIFFfree(*vpp), *vpp = 0; if (vp) { tsize_t bytes = nmemb * elem_size; if (elem_size && bytes / elem_size == nmemb) *vpp = (void*) _TIFFmalloc(bytes); if (*vpp) _TIFFmemcpy(*vpp, vp, bytes); } } void _TIFFsetByteArray(void** vpp, void* vp, uint32 n) { setByteArray(vpp, vp, n, 1); } void _TIFFsetString(char** cpp, char* cp) { setByteArray((void**) cpp, (void*) cp, strlen(cp)+1, 1); } void _TIFFsetNString(char** cpp, char* cp, uint32 n) { setByteArray((void**) cpp, (void*) cp, n, 1); } void _TIFFsetShortArray(uint16** wpp, uint16* wp, uint32 n) { setByteArray((void**) wpp, (void*) wp, n, sizeof (uint16)); } void _TIFFsetLongArray(uint32** lpp, uint32* lp, uint32 n) { setByteArray((void**) lpp, (void*) lp, n, sizeof (uint32)); } void _TIFFsetFloatArray(float** fpp, float* fp, uint32 n) { setByteArray((void**) fpp, (void*) fp, n, sizeof (float)); } void _TIFFsetDoubleArray(double** dpp, double* dp, uint32 n) { setByteArray((void**) dpp, (void*) dp, n, sizeof (double)); } /* * Install extra samples information. */ static int setExtraSamples(TIFFDirectory* td, va_list ap, uint32* v) { uint16* va; uint32 i; *v = va_arg(ap, uint32); if ((uint16) *v > td->td_samplesperpixel) return (0); va = va_arg(ap, uint16*); if (*v > 0 && va == NULL) /* typically missing param */ return (0); for (i = 0; i < *v; i++) if (va[i] > EXTRASAMPLE_UNASSALPHA) return (0); td->td_extrasamples = (uint16) *v; _TIFFsetShortArray(&td->td_sampleinfo, va, td->td_extrasamples); return (1); } static uint32 checkInkNamesString(TIFF* tif, uint32 slen, const char* s) { TIFFDirectory* td = &tif->tif_dir; uint16 i = td->td_samplesperpixel; if (slen > 0) { const char* ep = s+slen; const char* cp = s; for (; i > 0; i--) { for (; *cp != '\0'; cp++) if (cp >= ep) goto bad; cp++; /* skip \0 */ } return (cp-s); } bad: TIFFErrorExt(tif->tif_clientdata, "TIFFSetField", "%s: Invalid InkNames value; expecting %d names, found %d", tif->tif_name, td->td_samplesperpixel, td->td_samplesperpixel-i); return (0); } static int _TIFFVSetField(TIFF* tif, ttag_t tag, va_list ap) { static const char module[] = "_TIFFVSetField"; TIFFDirectory* td = &tif->tif_dir; int status = 1; uint32 v32, i, v; char* s; switch (tag) { case TIFFTAG_SUBFILETYPE: td->td_subfiletype = va_arg(ap, uint32); break; case TIFFTAG_IMAGEWIDTH: td->td_imagewidth = va_arg(ap, uint32); break; case TIFFTAG_IMAGELENGTH: td->td_imagelength = va_arg(ap, uint32); break; case TIFFTAG_BITSPERSAMPLE: td->td_bitspersample = (uint16) va_arg(ap, int); /* * If the data require post-decoding processing to byte-swap * samples, set it up here. Note that since tags are required * to be ordered, compression code can override this behaviour * in the setup method if it wants to roll the post decoding * work in with its normal work. */ if (tif->tif_flags & TIFF_SWAB) { if (td->td_bitspersample == 16) tif->tif_postdecode = _TIFFSwab16BitData; else if (td->td_bitspersample == 24) tif->tif_postdecode = _TIFFSwab24BitData; else if (td->td_bitspersample == 32) tif->tif_postdecode = _TIFFSwab32BitData; else if (td->td_bitspersample == 64) tif->tif_postdecode = _TIFFSwab64BitData; else if (td->td_bitspersample == 128) /* two 64's */ tif->tif_postdecode = _TIFFSwab64BitData; } break; case TIFFTAG_COMPRESSION: v = va_arg(ap, uint32) & 0xffff; /* * If we're changing the compression scheme, the notify the * previous module so that it can cleanup any state it's * setup. */ if (TIFFFieldSet(tif, FIELD_COMPRESSION)) { if (td->td_compression == v) break; (*tif->tif_cleanup)(tif); tif->tif_flags &= ~TIFF_CODERSETUP; } /* * Setup new compression routine state. */ if( (status = TIFFSetCompressionScheme(tif, v)) != 0 ) td->td_compression = (uint16) v; else status = 0; break; case TIFFTAG_PHOTOMETRIC: td->td_photometric = (uint16) va_arg(ap, int); break; case TIFFTAG_THRESHHOLDING: td->td_threshholding = (uint16) va_arg(ap, int); break; case TIFFTAG_FILLORDER: v = va_arg(ap, uint32); if (v != FILLORDER_LSB2MSB && v != FILLORDER_MSB2LSB) goto badvalue; td->td_fillorder = (uint16) v; break; case TIFFTAG_ORIENTATION: v = va_arg(ap, uint32); if (v < ORIENTATION_TOPLEFT || ORIENTATION_LEFTBOT < v) { TIFFWarningExt(tif->tif_clientdata, tif->tif_name, "Bad value %lu for \"%s\" tag ignored", v, _TIFFFieldWithTag(tif, tag)->field_name); } else td->td_orientation = (uint16) v; break; case TIFFTAG_SAMPLESPERPIXEL: /* XXX should cross check -- e.g. if pallette, then 1 */ v = va_arg(ap, uint32); if (v == 0) goto badvalue; td->td_samplesperpixel = (uint16) v; break; case TIFFTAG_ROWSPERSTRIP: v32 = va_arg(ap, uint32); if (v32 == 0) goto badvalue32; td->td_rowsperstrip = v32; if (!TIFFFieldSet(tif, FIELD_TILEDIMENSIONS)) { td->td_tilelength = v32; td->td_tilewidth = td->td_imagewidth; } break; case TIFFTAG_MINSAMPLEVALUE: td->td_minsamplevalue = (uint16) va_arg(ap, int); break; case TIFFTAG_MAXSAMPLEVALUE: td->td_maxsamplevalue = (uint16) va_arg(ap, int); break; case TIFFTAG_SMINSAMPLEVALUE: td->td_sminsamplevalue = va_arg(ap, double); break; case TIFFTAG_SMAXSAMPLEVALUE: td->td_smaxsamplevalue = va_arg(ap, double); break; case TIFFTAG_XRESOLUTION: td->td_xresolution = (float) va_arg(ap, double); break; case TIFFTAG_YRESOLUTION: td->td_yresolution = (float) va_arg(ap, double); break; case TIFFTAG_PLANARCONFIG: v = va_arg(ap, uint32); if (v != PLANARCONFIG_CONTIG && v != PLANARCONFIG_SEPARATE) goto badvalue; td->td_planarconfig = (uint16) v; break; case TIFFTAG_XPOSITION: td->td_xposition = (float) va_arg(ap, double); break; case TIFFTAG_YPOSITION: td->td_yposition = (float) va_arg(ap, double); break; case TIFFTAG_RESOLUTIONUNIT: v = va_arg(ap, uint32); if (v < RESUNIT_NONE || RESUNIT_CENTIMETER < v) goto badvalue; td->td_resolutionunit = (uint16) v; break; case TIFFTAG_PAGENUMBER: td->td_pagenumber[0] = (uint16) va_arg(ap, int); td->td_pagenumber[1] = (uint16) va_arg(ap, int); break; case TIFFTAG_HALFTONEHINTS: td->td_halftonehints[0] = (uint16) va_arg(ap, int); td->td_halftonehints[1] = (uint16) va_arg(ap, int); break; case TIFFTAG_COLORMAP: v32 = (uint32)(1L<td_bitspersample); _TIFFsetShortArray(&td->td_colormap[0], va_arg(ap, uint16*), v32); _TIFFsetShortArray(&td->td_colormap[1], va_arg(ap, uint16*), v32); _TIFFsetShortArray(&td->td_colormap[2], va_arg(ap, uint16*), v32); break; case TIFFTAG_EXTRASAMPLES: if (!setExtraSamples(td, ap, &v)) goto badvalue; break; case TIFFTAG_MATTEING: td->td_extrasamples = (uint16) (va_arg(ap, int) != 0); if (td->td_extrasamples) { uint16 sv = EXTRASAMPLE_ASSOCALPHA; _TIFFsetShortArray(&td->td_sampleinfo, &sv, 1); } break; case TIFFTAG_TILEWIDTH: v32 = va_arg(ap, uint32); if (v32 % 16) { if (tif->tif_mode != O_RDONLY) goto badvalue32; TIFFWarningExt(tif->tif_clientdata, tif->tif_name, "Nonstandard tile width %d, convert file", v32); } td->td_tilewidth = v32; tif->tif_flags |= TIFF_ISTILED; break; case TIFFTAG_TILELENGTH: v32 = va_arg(ap, uint32); if (v32 % 16) { if (tif->tif_mode != O_RDONLY) goto badvalue32; TIFFWarningExt(tif->tif_clientdata, tif->tif_name, "Nonstandard tile length %d, convert file", v32); } td->td_tilelength = v32; tif->tif_flags |= TIFF_ISTILED; break; case TIFFTAG_TILEDEPTH: v32 = va_arg(ap, uint32); if (v32 == 0) goto badvalue32; td->td_tiledepth = v32; break; case TIFFTAG_DATATYPE: v = va_arg(ap, uint32); switch (v) { case DATATYPE_VOID: v = SAMPLEFORMAT_VOID; break; case DATATYPE_INT: v = SAMPLEFORMAT_INT; break; case DATATYPE_UINT: v = SAMPLEFORMAT_UINT; break; case DATATYPE_IEEEFP: v = SAMPLEFORMAT_IEEEFP;break; default: goto badvalue; } td->td_sampleformat = (uint16) v; break; case TIFFTAG_SAMPLEFORMAT: v = va_arg(ap, uint32); if (v < SAMPLEFORMAT_UINT || SAMPLEFORMAT_COMPLEXIEEEFP < v) goto badvalue; td->td_sampleformat = (uint16) v; /* Try to fix up the SWAB function for complex data. */ if( td->td_sampleformat == SAMPLEFORMAT_COMPLEXINT && td->td_bitspersample == 32 && tif->tif_postdecode == _TIFFSwab32BitData ) tif->tif_postdecode = _TIFFSwab16BitData; else if( (td->td_sampleformat == SAMPLEFORMAT_COMPLEXINT || td->td_sampleformat == SAMPLEFORMAT_COMPLEXIEEEFP) && td->td_bitspersample == 64 && tif->tif_postdecode == _TIFFSwab64BitData ) tif->tif_postdecode = _TIFFSwab32BitData; break; case TIFFTAG_IMAGEDEPTH: td->td_imagedepth = va_arg(ap, uint32); break; case TIFFTAG_SUBIFD: if ((tif->tif_flags & TIFF_INSUBIFD) == 0) { td->td_nsubifd = (uint16) va_arg(ap, int); _TIFFsetLongArray(&td->td_subifd, va_arg(ap, uint32*), (long) td->td_nsubifd); } else { TIFFErrorExt(tif->tif_clientdata, module, "%s: Sorry, cannot nest SubIFDs", tif->tif_name); status = 0; } break; case TIFFTAG_YCBCRPOSITIONING: td->td_ycbcrpositioning = (uint16) va_arg(ap, int); break; case TIFFTAG_YCBCRSUBSAMPLING: td->td_ycbcrsubsampling[0] = (uint16) va_arg(ap, int); td->td_ycbcrsubsampling[1] = (uint16) va_arg(ap, int); break; case TIFFTAG_TRANSFERFUNCTION: v = (td->td_samplesperpixel - td->td_extrasamples) > 1 ? 3 : 1; for (i = 0; i < v; i++) _TIFFsetShortArray(&td->td_transferfunction[i], va_arg(ap, uint16*), 1L<td_bitspersample); break; case TIFFTAG_INKNAMES: v = va_arg(ap, uint32); s = va_arg(ap, char*); v = checkInkNamesString(tif, v, s); status = v > 0; if( v > 0 ) { _TIFFsetNString(&td->td_inknames, s, v); td->td_inknameslen = v; } break; default: { const TIFFFieldInfo* fip = _TIFFFindFieldInfo(tif, tag, TIFF_ANY); TIFFTagValue *tv; int tv_size, iCustom; /* * This can happen if multiple images are open with different * codecs which have private tags. The global tag information * table may then have tags that are valid for one file but not * the other. If the client tries to set a tag that is not valid * for the image's codec then we'll arrive here. This * happens, for example, when tiffcp is used to convert between * compression schemes and codec-specific tags are blindly copied. */ if(fip == NULL || fip->field_bit != FIELD_CUSTOM) { TIFFErrorExt(tif->tif_clientdata, module, "%s: Invalid %stag \"%s\" (not supported by codec)", tif->tif_name, isPseudoTag(tag) ? "pseudo-" : "", _TIFFFieldWithTag(tif, tag)->field_name); status = 0; break; } /* * Find the existing entry for this custom value. */ tv = NULL; for(iCustom = 0; iCustom < td->td_customValueCount; iCustom++) { if(td->td_customValues[iCustom].info == fip) { tv = td->td_customValues + iCustom; if(tv->value != NULL) { _TIFFfree(tv->value); tv->value = NULL; } break; } } /* * Grow the custom list if the entry was not found. */ if(tv == NULL) { TIFFTagValue *new_customValues; td->td_customValueCount++; new_customValues = (TIFFTagValue *) _TIFFrealloc(td->td_customValues, sizeof(TIFFTagValue) * td->td_customValueCount); if (!new_customValues) { TIFFErrorExt(tif->tif_clientdata, module, "%s: Failed to allocate space for list of custom values", tif->tif_name); status = 0; goto end; } td->td_customValues = new_customValues; tv = td->td_customValues + (td->td_customValueCount-1); tv->info = fip; tv->value = NULL; tv->count = 0; } /* * Set custom value ... save a copy of the custom tag value. */ tv_size = _TIFFDataSize(fip->field_type); if (tv_size == 0) { status = 0; TIFFErrorExt(tif->tif_clientdata, module, "%s: Bad field type %d for \"%s\"", tif->tif_name, fip->field_type, fip->field_name); goto end; } if(fip->field_passcount) { if (fip->field_writecount == TIFF_VARIABLE2) tv->count = (uint32) va_arg(ap, uint32); else tv->count = (int) va_arg(ap, int); } else if (fip->field_writecount == TIFF_VARIABLE || fip->field_writecount == TIFF_VARIABLE2) tv->count = 1; else if (fip->field_writecount == TIFF_SPP) tv->count = td->td_samplesperpixel; else tv->count = fip->field_writecount; if (fip->field_type == TIFF_ASCII) _TIFFsetString((char **)&tv->value, va_arg(ap, char *)); else { tv->value = _TIFFmalloc(tv_size * tv->count); if (!tv->value) { status = 0; goto end; } if ((fip->field_passcount || fip->field_writecount == TIFF_VARIABLE || fip->field_writecount == TIFF_VARIABLE2 || fip->field_writecount == TIFF_SPP || tv->count > 1) && fip->field_tag != TIFFTAG_PAGENUMBER && fip->field_tag != TIFFTAG_HALFTONEHINTS && fip->field_tag != TIFFTAG_YCBCRSUBSAMPLING && fip->field_tag != TIFFTAG_DOTRANGE) { _TIFFmemcpy(tv->value, va_arg(ap, void *), tv->count * tv_size); } else { /* * XXX: The following loop required to handle * TIFFTAG_PAGENUMBER, TIFFTAG_HALFTONEHINTS, * TIFFTAG_YCBCRSUBSAMPLING and TIFFTAG_DOTRANGE tags. * These tags are actually arrays and should be passed as * array pointers to TIFFSetField() function, but actually * passed as a list of separate values. This behaviour * must be changed in the future! */ int i2; char *val = (char *)tv->value; for (i2 = 0; i2 < tv->count; i2++, val += tv_size) { switch (fip->field_type) { case TIFF_BYTE: case TIFF_UNDEFINED: { uint8 v2 = (uint8)va_arg(ap, int); _TIFFmemcpy(val, &v2, tv_size); } break; case TIFF_SBYTE: { int8 v3 = (int8)va_arg(ap, int); _TIFFmemcpy(val, &v3, tv_size); } break; case TIFF_SHORT: { uint16 v4 = (uint16)va_arg(ap, int); _TIFFmemcpy(val, &v4, tv_size); } break; case TIFF_SSHORT: { int16 v5 = (int16)va_arg(ap, int); _TIFFmemcpy(val, &v5, tv_size); } break; case TIFF_LONG: case TIFF_IFD: { uint32 v6 = va_arg(ap, uint32); _TIFFmemcpy(val, &v6, tv_size); } break; case TIFF_SLONG: { int32 v7 = va_arg(ap, int32); _TIFFmemcpy(val, &v7, tv_size); } break; case TIFF_RATIONAL: case TIFF_SRATIONAL: case TIFF_FLOAT: { float v8 = (float)va_arg(ap, double); _TIFFmemcpy(val, &v8, tv_size); } break; case TIFF_DOUBLE: { double v9 = va_arg(ap, double); _TIFFmemcpy(val, &v9, tv_size); } break; default: _TIFFmemset(val, 0, tv_size); status = 0; break; } } } } } } if (status) { TIFFSetFieldBit(tif, _TIFFFieldWithTag(tif, tag)->field_bit); tif->tif_flags |= TIFF_DIRTYDIRECT; } end: va_end(ap); return (status); badvalue: TIFFErrorExt(tif->tif_clientdata, module, "%s: Bad value %d for \"%s\"", tif->tif_name, v, _TIFFFieldWithTag(tif, tag)->field_name); va_end(ap); return (0); badvalue32: TIFFErrorExt(tif->tif_clientdata, module, "%s: Bad value %ld for \"%s\"", tif->tif_name, v32, _TIFFFieldWithTag(tif, tag)->field_name); va_end(ap); return (0); } /* * Return 1/0 according to whether or not * it is permissible to set the tag's value. * Note that we allow ImageLength to be changed * so that we can append and extend to images. * Any other tag may not be altered once writing * has commenced, unless its value has no effect * on the format of the data that is written. */ static int OkToChangeTag(TIFF* tif, ttag_t tag) { const TIFFFieldInfo* fip = _TIFFFindFieldInfo(tif, tag, TIFF_ANY); if (!fip) { /* unknown tag */ TIFFErrorExt(tif->tif_clientdata, "TIFFSetField", "%s: Unknown %stag %u", tif->tif_name, isPseudoTag(tag) ? "pseudo-" : "", tag); return (0); } if (tag != TIFFTAG_IMAGELENGTH && (tif->tif_flags & TIFF_BEENWRITING) && !fip->field_oktochange) { /* * Consult info table to see if tag can be changed * after we've started writing. We only allow changes * to those tags that don't/shouldn't affect the * compression and/or format of the data. */ TIFFErrorExt(tif->tif_clientdata, "TIFFSetField", "%s: Cannot modify tag \"%s\" while writing", tif->tif_name, fip->field_name); return (0); } return (1); } /* * Record the value of a field in the * internal directory structure. The * field will be written to the file * when/if the directory structure is * updated. */ int TIFFSetField(TIFF* tif, ttag_t tag, ...) { va_list ap; int status; va_start(ap, tag); status = TIFFVSetField(tif, tag, ap); va_end(ap); return (status); } /* * Like TIFFSetField, but taking a varargs * parameter list. This routine is useful * for building higher-level interfaces on * top of the library. */ int TIFFVSetField(TIFF* tif, ttag_t tag, va_list ap) { return OkToChangeTag(tif, tag) ? (*tif->tif_tagmethods.vsetfield)(tif, tag, ap) : 0; } static int _TIFFVGetField(TIFF* tif, ttag_t tag, va_list ap) { TIFFDirectory* td = &tif->tif_dir; int ret_val = 1; switch (tag) { case TIFFTAG_SUBFILETYPE: *va_arg(ap, uint32*) = td->td_subfiletype; break; case TIFFTAG_IMAGEWIDTH: *va_arg(ap, uint32*) = td->td_imagewidth; break; case TIFFTAG_IMAGELENGTH: *va_arg(ap, uint32*) = td->td_imagelength; break; case TIFFTAG_BITSPERSAMPLE: *va_arg(ap, uint16*) = td->td_bitspersample; break; case TIFFTAG_COMPRESSION: *va_arg(ap, uint16*) = td->td_compression; break; case TIFFTAG_PHOTOMETRIC: *va_arg(ap, uint16*) = td->td_photometric; break; case TIFFTAG_THRESHHOLDING: *va_arg(ap, uint16*) = td->td_threshholding; break; case TIFFTAG_FILLORDER: *va_arg(ap, uint16*) = td->td_fillorder; break; case TIFFTAG_ORIENTATION: *va_arg(ap, uint16*) = td->td_orientation; break; case TIFFTAG_SAMPLESPERPIXEL: *va_arg(ap, uint16*) = td->td_samplesperpixel; break; case TIFFTAG_ROWSPERSTRIP: *va_arg(ap, uint32*) = td->td_rowsperstrip; break; case TIFFTAG_MINSAMPLEVALUE: *va_arg(ap, uint16*) = td->td_minsamplevalue; break; case TIFFTAG_MAXSAMPLEVALUE: *va_arg(ap, uint16*) = td->td_maxsamplevalue; break; case TIFFTAG_SMINSAMPLEVALUE: *va_arg(ap, double*) = td->td_sminsamplevalue; break; case TIFFTAG_SMAXSAMPLEVALUE: *va_arg(ap, double*) = td->td_smaxsamplevalue; break; case TIFFTAG_XRESOLUTION: *va_arg(ap, float*) = td->td_xresolution; break; case TIFFTAG_YRESOLUTION: *va_arg(ap, float*) = td->td_yresolution; break; case TIFFTAG_PLANARCONFIG: *va_arg(ap, uint16*) = td->td_planarconfig; break; case TIFFTAG_XPOSITION: *va_arg(ap, float*) = td->td_xposition; break; case TIFFTAG_YPOSITION: *va_arg(ap, float*) = td->td_yposition; break; case TIFFTAG_RESOLUTIONUNIT: *va_arg(ap, uint16*) = td->td_resolutionunit; break; case TIFFTAG_PAGENUMBER: *va_arg(ap, uint16*) = td->td_pagenumber[0]; *va_arg(ap, uint16*) = td->td_pagenumber[1]; break; case TIFFTAG_HALFTONEHINTS: *va_arg(ap, uint16*) = td->td_halftonehints[0]; *va_arg(ap, uint16*) = td->td_halftonehints[1]; break; case TIFFTAG_COLORMAP: *va_arg(ap, uint16**) = td->td_colormap[0]; *va_arg(ap, uint16**) = td->td_colormap[1]; *va_arg(ap, uint16**) = td->td_colormap[2]; break; case TIFFTAG_STRIPOFFSETS: case TIFFTAG_TILEOFFSETS: *va_arg(ap, uint32**) = td->td_stripoffset; break; case TIFFTAG_STRIPBYTECOUNTS: case TIFFTAG_TILEBYTECOUNTS: *va_arg(ap, uint32**) = td->td_stripbytecount; break; case TIFFTAG_MATTEING: *va_arg(ap, uint16*) = (td->td_extrasamples == 1 && td->td_sampleinfo[0] == EXTRASAMPLE_ASSOCALPHA); break; case TIFFTAG_EXTRASAMPLES: *va_arg(ap, uint16*) = td->td_extrasamples; *va_arg(ap, uint16**) = td->td_sampleinfo; break; case TIFFTAG_TILEWIDTH: *va_arg(ap, uint32*) = td->td_tilewidth; break; case TIFFTAG_TILELENGTH: *va_arg(ap, uint32*) = td->td_tilelength; break; case TIFFTAG_TILEDEPTH: *va_arg(ap, uint32*) = td->td_tiledepth; break; case TIFFTAG_DATATYPE: switch (td->td_sampleformat) { case SAMPLEFORMAT_UINT: *va_arg(ap, uint16*) = DATATYPE_UINT; break; case SAMPLEFORMAT_INT: *va_arg(ap, uint16*) = DATATYPE_INT; break; case SAMPLEFORMAT_IEEEFP: *va_arg(ap, uint16*) = DATATYPE_IEEEFP; break; case SAMPLEFORMAT_VOID: *va_arg(ap, uint16*) = DATATYPE_VOID; break; } break; case TIFFTAG_SAMPLEFORMAT: *va_arg(ap, uint16*) = td->td_sampleformat; break; case TIFFTAG_IMAGEDEPTH: *va_arg(ap, uint32*) = td->td_imagedepth; break; case TIFFTAG_SUBIFD: *va_arg(ap, uint16*) = td->td_nsubifd; *va_arg(ap, uint32**) = td->td_subifd; break; case TIFFTAG_YCBCRPOSITIONING: *va_arg(ap, uint16*) = td->td_ycbcrpositioning; break; case TIFFTAG_YCBCRSUBSAMPLING: *va_arg(ap, uint16*) = td->td_ycbcrsubsampling[0]; *va_arg(ap, uint16*) = td->td_ycbcrsubsampling[1]; break; case TIFFTAG_TRANSFERFUNCTION: *va_arg(ap, uint16**) = td->td_transferfunction[0]; if (td->td_samplesperpixel - td->td_extrasamples > 1) { *va_arg(ap, uint16**) = td->td_transferfunction[1]; *va_arg(ap, uint16**) = td->td_transferfunction[2]; } break; case TIFFTAG_INKNAMES: *va_arg(ap, char**) = td->td_inknames; break; default: { const TIFFFieldInfo* fip = _TIFFFindFieldInfo(tif, tag, TIFF_ANY); int i; /* * This can happen if multiple images are open with * different codecs which have private tags. The * global tag information table may then have tags * that are valid for one file but not the other. * If the client tries to get a tag that is not valid * for the image's codec then we'll arrive here. */ if( fip == NULL || fip->field_bit != FIELD_CUSTOM ) { TIFFErrorExt(tif->tif_clientdata, "_TIFFVGetField", "%s: Invalid %stag \"%s\" (not supported by codec)", tif->tif_name, isPseudoTag(tag) ? "pseudo-" : "", _TIFFFieldWithTag(tif, tag)->field_name); ret_val = 0; break; } /* * Do we have a custom value? */ ret_val = 0; for (i = 0; i < td->td_customValueCount; i++) { TIFFTagValue *tv = td->td_customValues + i; if (tv->info->field_tag != tag) continue; if (fip->field_passcount) { if (fip->field_readcount == TIFF_VARIABLE2) *va_arg(ap, uint32*) = (uint32)tv->count; else /* Assume TIFF_VARIABLE */ *va_arg(ap, uint16*) = (uint16)tv->count; *va_arg(ap, void **) = tv->value; ret_val = 1; } else { if ((fip->field_type == TIFF_ASCII || fip->field_readcount == TIFF_VARIABLE || fip->field_readcount == TIFF_VARIABLE2 || fip->field_readcount == TIFF_SPP || tv->count > 1) && fip->field_tag != TIFFTAG_PAGENUMBER && fip->field_tag != TIFFTAG_HALFTONEHINTS && fip->field_tag != TIFFTAG_YCBCRSUBSAMPLING && fip->field_tag != TIFFTAG_DOTRANGE) { *va_arg(ap, void **) = tv->value; ret_val = 1; } else { int j; char *val = (char *)tv->value; for (j = 0; j < tv->count; j++, val += _TIFFDataSize(tv->info->field_type)) { switch (fip->field_type) { case TIFF_BYTE: case TIFF_UNDEFINED: *va_arg(ap, uint8*) = *(uint8 *)val; ret_val = 1; break; case TIFF_SBYTE: *va_arg(ap, int8*) = *(int8 *)val; ret_val = 1; break; case TIFF_SHORT: *va_arg(ap, uint16*) = *(uint16 *)val; ret_val = 1; break; case TIFF_SSHORT: *va_arg(ap, int16*) = *(int16 *)val; ret_val = 1; break; case TIFF_LONG: case TIFF_IFD: *va_arg(ap, uint32*) = *(uint32 *)val; ret_val = 1; break; case TIFF_SLONG: *va_arg(ap, int32*) = *(int32 *)val; ret_val = 1; break; case TIFF_RATIONAL: case TIFF_SRATIONAL: case TIFF_FLOAT: *va_arg(ap, float*) = *(float *)val; ret_val = 1; break; case TIFF_DOUBLE: *va_arg(ap, double*) = *(double *)val; ret_val = 1; break; default: ret_val = 0; break; } } } } break; } } } return(ret_val); } /* * Return the value of a field in the * internal directory structure. */ int TEXPORT TIFFGetField(TIFF* tif, ttag_t tag, ...) { int status; va_list ap; va_start(ap, tag); status = TIFFVGetField(tif, tag, ap); va_end(ap); return (status); } /* * Like TIFFGetField, but taking a varargs * parameter list. This routine is useful * for building higher-level interfaces on * top of the library. */ int TIFFVGetField(TIFF* tif, ttag_t tag, va_list ap) { const TIFFFieldInfo* fip = _TIFFFindFieldInfo(tif, tag, TIFF_ANY); return (fip && (isPseudoTag(tag) || TIFFFieldSet(tif, fip->field_bit)) ? (*tif->tif_tagmethods.vgetfield)(tif, tag, ap) : 0); } #define CleanupField(member) { \ if (td->member) { \ _TIFFfree(td->member); \ td->member = 0; \ } \ } /* * Release storage associated with a directory. */ void TIFFFreeDirectory(TIFF* tif) { TIFFDirectory *td = &tif->tif_dir; int i; _TIFFmemset(td->td_fieldsset, 0, FIELD_SETLONGS); CleanupField(td_colormap[0]); CleanupField(td_colormap[1]); CleanupField(td_colormap[2]); CleanupField(td_sampleinfo); CleanupField(td_subifd); CleanupField(td_inknames); CleanupField(td_transferfunction[0]); CleanupField(td_transferfunction[1]); CleanupField(td_transferfunction[2]); CleanupField(td_stripoffset); CleanupField(td_stripbytecount); TIFFClrFieldBit(tif, FIELD_YCBCRSUBSAMPLING); TIFFClrFieldBit(tif, FIELD_YCBCRPOSITIONING); /* Cleanup custom tag values */ for( i = 0; i < td->td_customValueCount; i++ ) { if (td->td_customValues[i].value) _TIFFfree(td->td_customValues[i].value); } td->td_customValueCount = 0; CleanupField(td_customValues); } #undef CleanupField /* * Client Tag extension support (from Niles Ritter). */ static TIFFExtendProc _TIFFextender = (TIFFExtendProc) NULL; TIFFExtendProc TIFFSetTagExtender(TIFFExtendProc extender) { TIFFExtendProc prev = _TIFFextender; _TIFFextender = extender; return (prev); } /* * Setup for a new directory. Should we automatically call * TIFFWriteDirectory() if the current one is dirty? * * The newly created directory will not exist on the file till * TIFFWriteDirectory(), TIFFFlush() or TIFFClose() is called. */ int TIFFCreateDirectory(TIFF* tif) { TIFFDefaultDirectory(tif); tif->tif_diroff = 0; tif->tif_nextdiroff = 0; tif->tif_curoff = 0; tif->tif_row = (uint32) -1; tif->tif_curstrip = (tstrip_t) -1; return 0; } /* * Setup a default directory structure. */ int TIFFDefaultDirectory(TIFF* tif) { register TIFFDirectory* td = &tif->tif_dir; size_t tiffFieldInfoCount; const TIFFFieldInfo *tiffFieldInfo = _TIFFGetFieldInfo(&tiffFieldInfoCount); _TIFFSetupFieldInfo(tif, tiffFieldInfo, tiffFieldInfoCount); _TIFFmemset(td, 0, sizeof (*td)); td->td_fillorder = FILLORDER_MSB2LSB; td->td_bitspersample = 1; td->td_threshholding = THRESHHOLD_BILEVEL; td->td_orientation = ORIENTATION_TOPLEFT; td->td_samplesperpixel = 1; td->td_rowsperstrip = (uint32) -1; td->td_tilewidth = 0; td->td_tilelength = 0; td->td_tiledepth = 1; td->td_stripbytecountsorted = 1; /* Our own arrays always sorted. */ td->td_resolutionunit = RESUNIT_INCH; td->td_sampleformat = SAMPLEFORMAT_UINT; td->td_imagedepth = 1; td->td_ycbcrsubsampling[0] = 2; td->td_ycbcrsubsampling[1] = 2; td->td_ycbcrpositioning = YCBCRPOSITION_CENTERED; tif->tif_postdecode = _TIFFNoPostDecode; tif->tif_foundfield = NULL; tif->tif_tagmethods.vsetfield = _TIFFVSetField; tif->tif_tagmethods.vgetfield = _TIFFVGetField; tif->tif_tagmethods.printdir = NULL; /* * Give client code a chance to install their own * tag extensions & methods, prior to compression overloads. */ if (_TIFFextender) (*_TIFFextender)(tif); (void) TIFFSetField(tif, TIFFTAG_COMPRESSION, COMPRESSION_NONE); /* * NB: The directory is marked dirty as a result of setting * up the default compression scheme. However, this really * isn't correct -- we want TIFF_DIRTYDIRECT to be set only * if the user does something. We could just do the setup * by hand, but it seems better to use the normal mechanism * (i.e. TIFFSetField). */ tif->tif_flags &= ~TIFF_DIRTYDIRECT; /* * As per http://bugzilla.remotesensing.org/show_bug.cgi?id=19 * we clear the ISTILED flag when setting up a new directory. * Should we also be clearing stuff like INSUBIFD? */ tif->tif_flags &= ~TIFF_ISTILED; return (1); } static int TIFFAdvanceDirectory(TIFF* tif, uint32* nextdir, toff_t* off) { static const char module[] = "TIFFAdvanceDirectory"; uint16 dircount; if (isMapped(tif)) { toff_t poff=*nextdir; if (poff+sizeof(uint16) > tif->tif_size) { TIFFErrorExt(tif->tif_clientdata, module, "%s: Error fetching directory count", tif->tif_name); return (0); } _TIFFmemcpy(&dircount, tif->tif_base+poff, sizeof (uint16)); if (tif->tif_flags & TIFF_SWAB) TIFFSwabShort(&dircount); poff+=sizeof (uint16)+dircount*sizeof (TIFFDirEntry); if (off != NULL) *off = poff; if (((toff_t) (poff+sizeof (uint32))) > tif->tif_size) { TIFFErrorExt(tif->tif_clientdata, module, "%s: Error fetching directory link", tif->tif_name); return (0); } _TIFFmemcpy(nextdir, tif->tif_base+poff, sizeof (uint32)); if (tif->tif_flags & TIFF_SWAB) TIFFSwabLong(nextdir); return (1); } else { if (!SeekOK(tif, *nextdir) || !ReadOK(tif, &dircount, sizeof (uint16))) { TIFFErrorExt(tif->tif_clientdata, module, "%s: Error fetching directory count", tif->tif_name); return (0); } if (tif->tif_flags & TIFF_SWAB) TIFFSwabShort(&dircount); if (off != NULL) *off = TIFFSeekFile(tif, dircount*sizeof (TIFFDirEntry), SEEK_CUR); else (void) TIFFSeekFile(tif, dircount*sizeof (TIFFDirEntry), SEEK_CUR); if (!ReadOK(tif, nextdir, sizeof (uint32))) { TIFFErrorExt(tif->tif_clientdata, module, "%s: Error fetching directory link", tif->tif_name); return (0); } if (tif->tif_flags & TIFF_SWAB) TIFFSwabLong(nextdir); return (1); } } /* * Count the number of directories in a file. */ tdir_t TEXPORT TIFFNumberOfDirectories(TIFF* tif) { toff_t nextdir = tif->tif_header.tiff_diroff; tdir_t n = 0; while (nextdir != 0 && TIFFAdvanceDirectory(tif, &nextdir, NULL)) n++; return (n); } /* * Set the n-th directory as the current directory. * NB: Directories are numbered starting at 0. */ int TEXPORT TIFFSetDirectory(TIFF* tif, tdir_t dirn) { toff_t nextdir; tdir_t n; nextdir = tif->tif_header.tiff_diroff; for (n = dirn; n > 0 && nextdir != 0; n--) if (!TIFFAdvanceDirectory(tif, &nextdir, NULL)) return (0); tif->tif_nextdiroff = nextdir; /* * Set curdir to the actual directory index. The * -1 is because TIFFReadDirectory will increment * tif_curdir after successfully reading the directory. */ tif->tif_curdir = (dirn - n) - 1; /* * Reset tif_dirnumber counter and start new list of seen directories. * We need this to prevent IFD loops. */ tif->tif_dirnumber = 0; return (TIFFReadDirectory(tif)); } /* * Set the current directory to be the directory * located at the specified file offset. This interface * is used mainly to access directories linked with * the SubIFD tag (e.g. thumbnail images). */ int TIFFSetSubDirectory(TIFF* tif, uint32 diroff) { tif->tif_nextdiroff = diroff; /* * Reset tif_dirnumber counter and start new list of seen directories. * We need this to prevent IFD loops. */ tif->tif_dirnumber = 0; return (TIFFReadDirectory(tif)); } /* * Return file offset of the current directory. */ uint32 TIFFCurrentDirOffset(TIFF* tif) { return (tif->tif_diroff); } /* * Return an indication of whether or not we are * at the last directory in the file. */ int TIFFLastDirectory(TIFF* tif) { return (tif->tif_nextdiroff == 0); } /* * Unlink the specified directory from the directory chain. */ int TIFFUnlinkDirectory(TIFF* tif, tdir_t dirn) { static const char module[] = "TIFFUnlinkDirectory"; toff_t nextdir; toff_t off; tdir_t n; if (tif->tif_mode == O_RDONLY) { TIFFErrorExt(tif->tif_clientdata, module, "Can not unlink directory in read-only file"); return (0); } /* * Go to the directory before the one we want * to unlink and nab the offset of the link * field we'll need to patch. */ nextdir = tif->tif_header.tiff_diroff; off = sizeof (uint16) + sizeof (uint16); for (n = dirn-1; n > 0; n--) { if (nextdir == 0) { TIFFErrorExt(tif->tif_clientdata, module, "Directory %d does not exist", dirn); return (0); } if (!TIFFAdvanceDirectory(tif, &nextdir, &off)) return (0); } /* * Advance to the directory to be unlinked and fetch * the offset of the directory that follows. */ if (!TIFFAdvanceDirectory(tif, &nextdir, NULL)) return (0); /* * Go back and patch the link field of the preceding * directory to point to the offset of the directory * that follows. */ (void) TIFFSeekFile(tif, off, SEEK_SET); if (tif->tif_flags & TIFF_SWAB) TIFFSwabLong(&nextdir); if (!WriteOK(tif, &nextdir, sizeof (uint32))) { TIFFErrorExt(tif->tif_clientdata, module, "Error writing directory link"); return (0); } /* * Leave directory state setup safely. We don't have * facilities for doing inserting and removing directories, * so it's safest to just invalidate everything. This * means that the caller can only append to the directory * chain. */ (*tif->tif_cleanup)(tif); if ((tif->tif_flags & TIFF_MYBUFFER) && tif->tif_rawdata) { _TIFFfree(tif->tif_rawdata); tif->tif_rawdata = NULL; tif->tif_rawcc = 0; } tif->tif_flags &= ~(TIFF_BEENWRITING|TIFF_BUFFERSETUP|TIFF_POSTENCODE); TIFFFreeDirectory(tif); TIFFDefaultDirectory(tif); tif->tif_diroff = 0; /* force link on next write */ tif->tif_nextdiroff = 0; /* next write must be at end */ tif->tif_curoff = 0; tif->tif_row = (uint32) -1; tif->tif_curstrip = (tstrip_t) -1; return (1); } /* [BFC] * * Author: Bruce Cameron * * Set a table of tags that are to be replaced during directory process by the * 'IGNORE' state - or return TRUE/FALSE for the requested tag such that * 'ReadDirectory' can use the stored information. * * FIXME: this is never used properly. Should be removed in the future. */ int TIFFReassignTagToIgnore (enum TIFFIgnoreSense task, int TIFFtagID) { static int TIFFignoretags [FIELD_LAST]; static int tagcount = 0 ; int i; /* Loop index */ int j; /* Loop index */ switch (task) { case TIS_STORE: if ( tagcount < (FIELD_LAST - 1) ) { for ( j = 0 ; j < tagcount ; ++j ) { /* Do not add duplicate tag */ if ( TIFFignoretags [j] == TIFFtagID ) return (TRUE) ; } TIFFignoretags [tagcount++] = TIFFtagID ; return (TRUE) ; } break ; case TIS_EXTRACT: for ( i = 0 ; i < tagcount ; ++i ) { if ( TIFFignoretags [i] == TIFFtagID ) return (TRUE) ; } break; case TIS_EMPTY: tagcount = 0 ; /* Clear the list */ return (TRUE) ; default: break; } return (FALSE); } /* vim: set ts=8 sts=8 sw=8 noet: */