diff options
Diffstat (limited to 'plugins/FreeImage/src/Metadata/XTIFF.cpp')
| -rw-r--r-- | plugins/FreeImage/src/Metadata/XTIFF.cpp | 661 |
1 files changed, 661 insertions, 0 deletions
diff --git a/plugins/FreeImage/src/Metadata/XTIFF.cpp b/plugins/FreeImage/src/Metadata/XTIFF.cpp new file mode 100644 index 0000000000..bc63cf38b2 --- /dev/null +++ b/plugins/FreeImage/src/Metadata/XTIFF.cpp @@ -0,0 +1,661 @@ +// ==========================================================
+// Metadata functions implementation
+// Extended TIFF Directory GEO Tag Support
+//
+// Design and implementation by
+// - Hervé Drolon (drolon@infonie.fr)
+// - Thorsten Radde (support@IdealSoftware.com)
+// - Berend Engelbrecht (softwarecave@users.sourceforge.net)
+// - Mihail Naydenov (mnaydenov@users.sourceforge.net)
+//
+// Based on the LibTIFF xtiffio sample and on LibGeoTIFF
+//
+// This file is part of FreeImage 3
+//
+// COVERED CODE IS PROVIDED UNDER THIS LICENSE ON AN "AS IS" BASIS, WITHOUT WARRANTY
+// OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, WITHOUT LIMITATION, WARRANTIES
+// THAT THE COVERED CODE IS FREE OF DEFECTS, MERCHANTABLE, FIT FOR A PARTICULAR PURPOSE
+// OR NON-INFRINGING. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE COVERED
+// CODE IS WITH YOU. SHOULD ANY COVERED CODE PROVE DEFECTIVE IN ANY RESPECT, YOU (NOT
+// THE INITIAL DEVELOPER OR ANY OTHER CONTRIBUTOR) ASSUME THE COST OF ANY NECESSARY
+// SERVICING, REPAIR OR CORRECTION. THIS DISCLAIMER OF WARRANTY CONSTITUTES AN ESSENTIAL
+// PART OF THIS LICENSE. NO USE OF ANY COVERED CODE IS AUTHORIZED HEREUNDER EXCEPT UNDER
+// THIS DISCLAIMER.
+//
+// Use at your own risk!
+// ==========================================================
+
+#ifdef _MSC_VER
+#pragma warning (disable : 4786) // identifier was truncated to 'number' characters
+#endif
+
+#include "../LibTIFF4/tiffiop.h"
+
+#include "FreeImage.h"
+#include "Utilities.h"
+#include "FreeImageTag.h"
+#include "FIRational.h"
+
+// ----------------------------------------------------------
+// Extended TIFF Directory GEO Tag Support
+// ----------------------------------------------------------
+
+/**
+ Tiff info structure.
+ Entry format:
+ { TAGNUMBER, ReadCount, WriteCount, DataType, FIELDNUM, OkToChange, PassDirCountOnSet, AsciiName }
+
+ For ReadCount, WriteCount, -1 = unknown.
+*/
+static const TIFFFieldInfo xtiffFieldInfo[] = {
+ { TIFFTAG_GEOPIXELSCALE, -1, -1, TIFF_DOUBLE, FIELD_CUSTOM, TRUE, TRUE, "GeoPixelScale" },
+ { TIFFTAG_INTERGRAPH_MATRIX, -1, -1, TIFF_DOUBLE, FIELD_CUSTOM, TRUE, TRUE, "Intergraph TransformationMatrix" },
+ { TIFFTAG_GEOTRANSMATRIX, -1, -1, TIFF_DOUBLE, FIELD_CUSTOM, TRUE, TRUE, "GeoTransformationMatrix" },
+ { TIFFTAG_GEOTIEPOINTS, -1, -1, TIFF_DOUBLE, FIELD_CUSTOM, TRUE, TRUE, "GeoTiePoints" },
+ { TIFFTAG_GEOKEYDIRECTORY,-1,-1, TIFF_SHORT, FIELD_CUSTOM, TRUE, TRUE, "GeoKeyDirectory" },
+ { TIFFTAG_GEODOUBLEPARAMS, -1, -1, TIFF_DOUBLE, FIELD_CUSTOM, TRUE, TRUE, "GeoDoubleParams" },
+ { TIFFTAG_GEOASCIIPARAMS, -1, -1, TIFF_ASCII, FIELD_CUSTOM, TRUE, FALSE, "GeoASCIIParams" },
+ { TIFFTAG_JPL_CARTO_IFD, 1, 1, TIFF_LONG, FIELD_CUSTOM, TRUE, TRUE, "JPL Carto IFD offset" } /** Don't use this! **/
+};
+
+static void
+_XTIFFLocalDefaultDirectory(TIFF *tif) {
+ int tag_size = sizeof(xtiffFieldInfo) / sizeof(xtiffFieldInfo[0]);
+ // Install the extended Tag field info
+ TIFFMergeFieldInfo(tif, xtiffFieldInfo, tag_size);
+}
+
+static TIFFExtendProc _ParentExtender;
+
+/**
+This is the callback procedure, and is
+called by the DefaultDirectory method
+every time a new TIFF directory is opened.
+*/
+static void
+_XTIFFDefaultDirectory(TIFF *tif) {
+ // set up our own defaults
+ _XTIFFLocalDefaultDirectory(tif);
+
+ /*
+ Since an XTIFF client module may have overridden
+ the default directory method, we call it now to
+ allow it to set up the rest of its own methods.
+ */
+ if (_ParentExtender)
+ (*_ParentExtender)(tif);
+}
+
+/**
+XTIFF Initializer -- sets up the callback procedure for the TIFF module
+*/
+void
+XTIFFInitialize(void) {
+ static int first_time = 1;
+
+ if (! first_time)
+ return; /* Been there. Done that. */
+ first_time = 0;
+
+ // Grab the inherited method and install
+ _ParentExtender = TIFFSetTagExtender(_XTIFFDefaultDirectory);
+}
+
+// ----------------------------------------------------------
+// GeoTIFF tag reading / writing
+// ----------------------------------------------------------
+
+void
+tiff_read_geotiff_profile(TIFF *tif, FIBITMAP *dib) {
+ char defaultKey[16];
+
+ size_t tag_size = sizeof(xtiffFieldInfo) / sizeof(xtiffFieldInfo[0]);
+
+ TagLib& tag_lib = TagLib::instance();
+
+ for(unsigned i = 0; i < tag_size; i++) {
+
+ const TIFFFieldInfo *fieldInfo = &xtiffFieldInfo[i];
+
+ if(fieldInfo->field_type == TIFF_ASCII) {
+ char *params = NULL;
+
+ if(TIFFGetField(tif, fieldInfo->field_tag, ¶ms)) {
+ // create a tag
+ FITAG *tag = FreeImage_CreateTag();
+ if (!tag)
+ return;
+
+ WORD tag_id = (WORD)fieldInfo->field_tag;
+
+ FreeImage_SetTagType(tag, (FREE_IMAGE_MDTYPE)fieldInfo->field_type);
+ FreeImage_SetTagID(tag, tag_id);
+ FreeImage_SetTagKey(tag, tag_lib.getTagFieldName(TagLib::GEOTIFF, tag_id, defaultKey));
+ FreeImage_SetTagDescription(tag, tag_lib.getTagDescription(TagLib::GEOTIFF, tag_id));
+ FreeImage_SetTagLength(tag, (DWORD)strlen(params) + 1);
+ FreeImage_SetTagCount(tag, FreeImage_GetTagLength(tag));
+ FreeImage_SetTagValue(tag, params);
+ FreeImage_SetMetadata(FIMD_GEOTIFF, dib, FreeImage_GetTagKey(tag), tag);
+
+ // delete the tag
+ FreeImage_DeleteTag(tag);
+ }
+ } else {
+ short tag_count = 0;
+ void* data = NULL;
+
+ if(TIFFGetField(tif, fieldInfo->field_tag, &tag_count, &data)) {
+ // create a tag
+ FITAG *tag = FreeImage_CreateTag();
+ if (!tag)
+ return;
+
+ WORD tag_id = (WORD)fieldInfo->field_tag;
+ FREE_IMAGE_MDTYPE tag_type = (FREE_IMAGE_MDTYPE)fieldInfo->field_type;
+
+ FreeImage_SetTagType(tag, tag_type);
+ FreeImage_SetTagID(tag, tag_id);
+ FreeImage_SetTagKey(tag, tag_lib.getTagFieldName(TagLib::GEOTIFF, tag_id, defaultKey));
+ FreeImage_SetTagDescription(tag, tag_lib.getTagDescription(TagLib::GEOTIFF, tag_id));
+ FreeImage_SetTagLength(tag, FreeImage_TagDataWidth(tag_type) * tag_count);
+ FreeImage_SetTagCount(tag, tag_count);
+ FreeImage_SetTagValue(tag, data);
+ FreeImage_SetMetadata(FIMD_GEOTIFF, dib, FreeImage_GetTagKey(tag), tag);
+
+ // delete the tag
+ FreeImage_DeleteTag(tag);
+ }
+ }
+ } // for(tag_size)
+}
+
+void
+tiff_write_geotiff_profile(TIFF *tif, FIBITMAP *dib) {
+ char defaultKey[16];
+
+ if(FreeImage_GetMetadataCount(FIMD_GEOTIFF, dib) == 0) {
+ return;
+ }
+
+ size_t tag_size = sizeof(xtiffFieldInfo) / sizeof(xtiffFieldInfo[0]);
+
+ TagLib& tag_lib = TagLib::instance();
+
+ for(unsigned i = 0; i < tag_size; i++) {
+ const TIFFFieldInfo *fieldInfo = &xtiffFieldInfo[i];
+
+ FITAG *tag = NULL;
+ const char *key = tag_lib.getTagFieldName(TagLib::GEOTIFF, (WORD)fieldInfo->field_tag, defaultKey);
+
+ if(FreeImage_GetMetadata(FIMD_GEOTIFF, dib, key, &tag)) {
+ if(FreeImage_GetTagType(tag) == FIDT_ASCII) {
+ TIFFSetField(tif, fieldInfo->field_tag, FreeImage_GetTagValue(tag));
+ } else {
+ TIFFSetField(tif, fieldInfo->field_tag, FreeImage_GetTagCount(tag), FreeImage_GetTagValue(tag));
+ }
+ }
+ }
+}
+
+// ----------------------------------------------------------
+// EXIF tag reading & writing
+// ----------------------------------------------------------
+
+/**
+Read a single exif tag
+*/
+static BOOL
+tiff_read_exif_tag(TIFF *tif, TagLib::MDMODEL md_model, FIBITMAP *dib, TagLib& tagLib, TIFFDirectory *td, uint32 tag) {
+ const TIFFField *fip;
+ uint32 value_count;
+ int mem_alloc = 0;
+ void *raw_data = NULL;
+
+ if(tag == TIFFTAG_EXIFIFD) {
+ return TRUE;
+ }
+
+ // get the tag key - use NULL to avoid reading GeoTIFF tags
+ const char *key = tagLib.getTagFieldName(md_model, (WORD)tag, NULL);
+ if(key == NULL) {
+ return TRUE;
+ }
+
+ fip = TIFFFieldWithTag(tif, tag);
+ if(fip == NULL) {
+ return TRUE;
+ }
+
+ if(fip->field_passcount) { //<- "passcount" means "returns count"
+ if (fip->field_readcount != TIFF_VARIABLE2) { //<- TIFF_VARIABLE2 means "uses LONG count"
+
+ // assume TIFF_VARIABLE (uses SHORT count)
+ uint16 value_count16;
+ if(TIFFGetField(tif, tag, &value_count16, &raw_data) != 1) {
+ return TRUE;
+ }
+ value_count = value_count16;
+ } else {
+ if(TIFFGetField(tif, tag, &value_count, &raw_data) != 1) {
+ return TRUE;
+ }
+ }
+ } else {
+
+ // determine count
+
+ if (fip->field_readcount == TIFF_VARIABLE || fip->field_readcount == TIFF_VARIABLE2) {
+ value_count = 1;
+ } else if (fip->field_readcount == TIFF_SPP) {
+ value_count = td->td_samplesperpixel;
+ } else {
+ value_count = fip->field_readcount;
+ }
+
+ // access fields as pointers to data
+ // (### determining this is NOT robust... and hardly can be. It is implemented looking the _TIFFVGetField code)
+
+ if(fip->field_tag == TIFFTAG_TRANSFERFUNCTION) {
+ // reading this tag cause a bug probably located somewhere inside libtiff
+ return TRUE;
+ }
+
+ if ((fip->field_type == TIFF_ASCII
+ || fip->field_readcount == TIFF_VARIABLE
+ || fip->field_readcount == TIFF_VARIABLE2
+ || fip->field_readcount == TIFF_SPP
+ || value_count > 1)
+
+ && fip->field_tag != TIFFTAG_PAGENUMBER
+ && fip->field_tag != TIFFTAG_HALFTONEHINTS
+ && fip->field_tag != TIFFTAG_YCBCRSUBSAMPLING
+ && fip->field_tag != TIFFTAG_DOTRANGE
+
+ && fip->field_tag != TIFFTAG_BITSPERSAMPLE //<- these two are tricky -
+ && fip->field_tag != TIFFTAG_COMPRESSION //<- they are defined as TIFF_VARIABLE but in reality return a single value
+ ) {
+ if(TIFFGetField(tif, tag, &raw_data) != 1) {
+ return TRUE;
+ }
+ } else {
+
+ // access fields as values
+
+ const int value_size = _TIFFDataSize(fip->field_type);
+ raw_data = _TIFFmalloc(value_size * value_count);
+ mem_alloc = 1;
+ int ok = FALSE;
+
+ // ### if value_count > 1, tag is PAGENUMBER or HALFTONEHINTS or YCBCRSUBSAMPLING or DOTRANGE,
+ // all off which are value_count == 2 (see tif_dirinfo.c)
+ switch(value_count)
+ {
+ case 1:
+ ok = TIFFGetField(tif, tag, raw_data);
+ break;
+ case 2:
+ ok = TIFFGetField(tif, tag, raw_data, (BYTE*)(raw_data) + value_size*1);
+ break;
+/* # we might need more in the future:
+ case 3:
+ ok = TIFFGetField(tif, tag, raw_data, (BYTE*)(raw_data) + value_size*1, (BYTE*)(raw_data) + value_size*2);
+ break;
+*/
+ default:
+ FreeImage_OutputMessageProc(FIF_TIFF, "Unimplemented variable number of parameters for Tiff Tag %s", fip->field_name);
+ break;
+ }
+ if(ok != 1) {
+ _TIFFfree(raw_data);
+ return TRUE;
+ }
+ }
+ }
+
+ // build FreeImage tag from Tiff Tag data we collected
+
+ FITAG *fitag = FreeImage_CreateTag();
+ if (!fitag) {
+ if(mem_alloc) {
+ _TIFFfree(raw_data);
+ }
+ return FALSE;
+ }
+
+ FreeImage_SetTagID(fitag, (WORD)tag);
+ FreeImage_SetTagKey(fitag, key);
+
+ switch(fip->field_type) {
+ case TIFF_BYTE:
+ FreeImage_SetTagType(fitag, FIDT_BYTE);
+ FreeImage_SetTagLength(fitag, TIFFDataWidth(fip->field_type) * value_count);
+ FreeImage_SetTagCount(fitag, value_count);
+ FreeImage_SetTagValue(fitag, raw_data);
+ break;
+
+ case TIFF_UNDEFINED:
+ FreeImage_SetTagType(fitag, FIDT_UNDEFINED);
+ FreeImage_SetTagLength(fitag, TIFFDataWidth(fip->field_type) * value_count);
+ FreeImage_SetTagCount(fitag, value_count);
+ FreeImage_SetTagValue(fitag, raw_data);
+ break;
+
+ case TIFF_SBYTE:
+ FreeImage_SetTagType(fitag, FIDT_SBYTE);
+ FreeImage_SetTagLength(fitag, TIFFDataWidth(fip->field_type) * value_count);
+ FreeImage_SetTagCount(fitag, value_count);
+ FreeImage_SetTagValue(fitag, raw_data);
+ break;
+
+ case TIFF_SHORT:
+ FreeImage_SetTagType(fitag, FIDT_SHORT);
+ FreeImage_SetTagLength(fitag, TIFFDataWidth(fip->field_type) * value_count);
+ FreeImage_SetTagCount(fitag, value_count);
+ FreeImage_SetTagValue(fitag, raw_data);
+ break;
+
+ case TIFF_SSHORT:
+ FreeImage_SetTagType(fitag, FIDT_SSHORT);
+ FreeImage_SetTagLength(fitag, TIFFDataWidth(fip->field_type) * value_count);
+ FreeImage_SetTagCount(fitag, value_count);
+ FreeImage_SetTagValue(fitag, raw_data);
+ break;
+
+ case TIFF_LONG:
+ FreeImage_SetTagType(fitag, FIDT_LONG);
+ FreeImage_SetTagLength(fitag, TIFFDataWidth(fip->field_type) * value_count);
+ FreeImage_SetTagCount(fitag, value_count);
+ FreeImage_SetTagValue(fitag, raw_data);
+ break;
+
+ case TIFF_IFD:
+ FreeImage_SetTagType(fitag, FIDT_IFD);
+ FreeImage_SetTagLength(fitag, TIFFDataWidth(fip->field_type) * value_count);
+ FreeImage_SetTagCount(fitag, value_count);
+ FreeImage_SetTagValue(fitag, raw_data);
+ break;
+
+ case TIFF_SLONG:
+ FreeImage_SetTagType(fitag, FIDT_SLONG);
+ FreeImage_SetTagLength(fitag, TIFFDataWidth(fip->field_type) * value_count);
+ FreeImage_SetTagCount(fitag, value_count);
+ FreeImage_SetTagValue(fitag, raw_data);
+ break;
+
+ case TIFF_RATIONAL: {
+ // LibTIFF converts rational to floats : reconvert floats to rationals
+ DWORD *rvalue = (DWORD*)malloc(2 * value_count * sizeof(DWORD));
+ for(uint32 i = 0; i < value_count; i++) {
+ float *fv = (float*)raw_data;
+ FIRational rational(fv[i]);
+ rvalue[2*i] = rational.getNumerator();
+ rvalue[2*i+1] = rational.getDenominator();
+ }
+ FreeImage_SetTagType(fitag, FIDT_RATIONAL);
+ FreeImage_SetTagLength(fitag, TIFFDataWidth(fip->field_type) * value_count);
+ FreeImage_SetTagCount(fitag, value_count);
+ FreeImage_SetTagValue(fitag, rvalue);
+ free(rvalue);
+ }
+ break;
+
+ case TIFF_SRATIONAL: {
+ // LibTIFF converts rational to floats : reconvert floats to rationals
+ LONG *rvalue = (LONG*)malloc(2 * value_count * sizeof(LONG));
+ for(uint32 i = 0; i < value_count; i++) {
+ float *fv = (float*)raw_data;
+ FIRational rational(fv[i]);
+ rvalue[2*i] = rational.getNumerator();
+ rvalue[2*i+1] = rational.getDenominator();
+ }
+ FreeImage_SetTagType(fitag, FIDT_RATIONAL);
+ FreeImage_SetTagLength(fitag, TIFFDataWidth(fip->field_type) * value_count);
+ FreeImage_SetTagCount(fitag, value_count);
+ FreeImage_SetTagValue(fitag, rvalue);
+ free(rvalue);
+ }
+ break;
+
+ case TIFF_FLOAT:
+ FreeImage_SetTagType(fitag, FIDT_FLOAT);
+ FreeImage_SetTagLength(fitag, TIFFDataWidth(fip->field_type) * value_count);
+ FreeImage_SetTagCount(fitag, value_count);
+ FreeImage_SetTagValue(fitag, raw_data);
+ break;
+
+ case TIFF_DOUBLE:
+ FreeImage_SetTagType(fitag, FIDT_DOUBLE);
+ FreeImage_SetTagLength(fitag, TIFFDataWidth(fip->field_type) * value_count);
+ FreeImage_SetTagCount(fitag, value_count);
+ FreeImage_SetTagValue(fitag, raw_data);
+ break;
+
+ case TIFF_LONG8: // BigTIFF 64-bit unsigned integer
+ FreeImage_SetTagType(fitag, FIDT_LONG8);
+ FreeImage_SetTagLength(fitag, TIFFDataWidth(fip->field_type) * value_count);
+ FreeImage_SetTagCount(fitag, value_count);
+ FreeImage_SetTagValue(fitag, raw_data);
+ break;
+
+ case TIFF_IFD8: // BigTIFF 64-bit unsigned integer (offset)
+ FreeImage_SetTagType(fitag, FIDT_IFD8);
+ FreeImage_SetTagLength(fitag, TIFFDataWidth(fip->field_type) * value_count);
+ FreeImage_SetTagCount(fitag, value_count);
+ FreeImage_SetTagValue(fitag, raw_data);
+ break;
+
+ case TIFF_SLONG8: // BigTIFF 64-bit signed integer
+ FreeImage_SetTagType(fitag, FIDT_SLONG8);
+ FreeImage_SetTagLength(fitag, TIFFDataWidth(fip->field_type) * value_count);
+ FreeImage_SetTagCount(fitag, value_count);
+ FreeImage_SetTagValue(fitag, raw_data);
+ break;
+
+ default: {
+ size_t length = strlen((char*)raw_data) + 1;
+ FreeImage_SetTagType(fitag, FIDT_ASCII);
+ FreeImage_SetTagLength(fitag, (DWORD)length);
+ FreeImage_SetTagCount(fitag, (DWORD)length);
+ FreeImage_SetTagValue(fitag, raw_data);
+ }
+ break;
+ }
+
+ const char *description = tagLib.getTagDescription(md_model, (WORD)tag);
+ if(description) {
+ FreeImage_SetTagDescription(fitag, description);
+ }
+ // store the tag
+ FreeImage_SetMetadata(tagLib.getFreeImageModel(md_model), dib, FreeImage_GetTagKey(fitag), fitag);
+
+ // destroy the tag
+ FreeImage_DeleteTag(fitag);
+
+ if(mem_alloc) {
+ _TIFFfree(raw_data);
+ }
+ return TRUE;
+}
+
+/**
+Read all known exif tags
+*/
+BOOL
+tiff_read_exif_tags(TIFF *tif, TagLib::MDMODEL md_model, FIBITMAP *dib) {
+ int i;
+ short count;
+
+ TagLib& tagLib = TagLib::instance();
+
+ TIFFDirectory *td = &tif->tif_dir;
+
+ count = (short) TIFFGetTagListCount(tif);
+ for(i = 0; i < count; i++) {
+ uint32 tag = TIFFGetTagListEntry(tif, i);
+ // read the tag
+ if (!tiff_read_exif_tag(tif, md_model, dib, tagLib, td, tag))
+ return FALSE;
+ }
+
+ // we want to know values of standard tags too!!
+
+ // loop over all Core Directory Tags
+ // ### uses private data, but there is no other way
+ if(md_model == TagLib::EXIF_MAIN) {
+
+ uint32 lastTag = 0; //<- used to prevent reading some tags twice (as stored in tif_fieldinfo)
+
+ for (int fi = 0, nfi = (int)tif->tif_nfields; nfi > 0; nfi--, fi++) {
+ const TIFFField *fld = tif->tif_fields[fi];
+
+ if(fld->field_tag == lastTag)
+ continue;
+
+ // test if tag value is set
+ // (lifted directly form LibTiff _TIFFWriteDirectory)
+
+ if ( fld->field_bit == FIELD_CUSTOM ) {
+ int ci, is_set = FALSE;
+
+ for ( ci = 0; ci < td->td_customValueCount; ci++ ) {
+ is_set |= (td->td_customValues[ci].info == fld);
+ }
+
+ if ( !is_set ) {
+ continue;
+ }
+
+ } else if (!TIFFFieldSet(tif, fld->field_bit)) {
+ continue;
+ }
+
+ // process *all* other tags (some will be ignored)
+
+ tiff_read_exif_tag(tif, md_model, dib, tagLib, td, fld->field_tag);
+
+
+ lastTag = fld->field_tag;
+ }
+
+ }
+
+ return TRUE;
+
+}
+
+
+/**
+Skip tags that are already handled by the LibTIFF writing process
+*/
+static BOOL
+skip_write_field(TIFF* tif, uint32 tag) {
+ switch (tag) {
+ case TIFFTAG_SAMPLEFORMAT:
+ case TIFFTAG_IMAGEWIDTH:
+ case TIFFTAG_IMAGELENGTH:
+ case TIFFTAG_SAMPLESPERPIXEL:
+ case TIFFTAG_BITSPERSAMPLE:
+ case TIFFTAG_PHOTOMETRIC:
+ case TIFFTAG_PLANARCONFIG:
+ case TIFFTAG_ROWSPERSTRIP:
+ case TIFFTAG_RESOLUTIONUNIT:
+ case TIFFTAG_XRESOLUTION:
+ case TIFFTAG_YRESOLUTION:
+ case TIFFTAG_SUBFILETYPE:
+ case TIFFTAG_PAGENUMBER:
+ case TIFFTAG_COLORMAP:
+ case TIFFTAG_ORIENTATION:
+ case TIFFTAG_COMPRESSION:
+ case TIFFTAG_PREDICTOR:
+ case TIFFTAG_GROUP3OPTIONS:
+ case TIFFTAG_FILLORDER:
+ // skip always, values have been set in SaveOneTIFF()
+ return TRUE;
+ break;
+
+ case TIFFTAG_RICHTIFFIPTC:
+ // skip always, IPTC metadata model is set in tiff_write_iptc_profile()
+ return TRUE;
+ break;
+
+ case TIFFTAG_YCBCRCOEFFICIENTS:
+ case TIFFTAG_REFERENCEBLACKWHITE:
+ case TIFFTAG_YCBCRSUBSAMPLING:
+ // skip as they cannot be filled yet
+ return TRUE;
+ break;
+
+ case TIFFTAG_PAGENAME:
+ {
+ char *value = NULL;
+ TIFFGetField(tif, TIFFTAG_PAGENAME, &value);
+ // only skip if no value has been set
+ if(value == NULL) {
+ return FALSE;
+ } else {
+ return TRUE;
+ }
+ }
+ default:
+ return FALSE;
+ break;
+ }
+}
+
+/**
+Write all known exif tags
+*/
+BOOL
+tiff_write_exif_tags(TIFF *tif, TagLib::MDMODEL md_model, FIBITMAP *dib) {
+ char defaultKey[16];
+
+ // only EXIF_MAIN so far
+ if(md_model != TagLib::EXIF_MAIN) {
+ return FALSE;
+ }
+
+ if(FreeImage_GetMetadataCount(FIMD_EXIF_MAIN, dib) == 0) {
+ return FALSE;
+ }
+
+ TagLib& tag_lib = TagLib::instance();
+
+ for (int fi = 0, nfi = (int)tif->tif_nfields; nfi > 0; nfi--, fi++) {
+ const TIFFField *fld = tif->tif_fields[fi];
+
+ if(skip_write_field(tif, fld->field_tag)) {
+ // skip tags that are already handled by the LibTIFF writing process
+ continue;
+ }
+
+ FITAG *tag = NULL;
+ // get the tag key
+ const char *key = tag_lib.getTagFieldName(TagLib::EXIF_MAIN, (WORD)fld->field_tag, defaultKey);
+
+ if(FreeImage_GetMetadata(FIMD_EXIF_MAIN, dib, key, &tag)) {
+ FREE_IMAGE_MDTYPE tag_type = FreeImage_GetTagType(tag);
+ TIFFDataType tif_tag_type = fld->field_type;
+
+ // check for identical formats
+
+ // (enum value are the sames between FREE_IMAGE_MDTYPE and TIFFDataType types)
+ if ((int)tif_tag_type != (int)tag_type) {
+ // skip tag or _TIFFmemcpy will fail
+ continue;
+ }
+ // type of storage may differ (e.g. rationnal array vs float array type)
+ if(_TIFFDataSize(tif_tag_type) != FreeImage_TagDataWidth(tag_type)) {
+ // skip tag or _TIFFmemcpy will fail
+ continue;
+ }
+
+ if(tag_type == FIDT_ASCII) {
+ TIFFSetField(tif, fld->field_tag, FreeImage_GetTagValue(tag));
+ } else {
+ TIFFSetField(tif, fld->field_tag, FreeImage_GetTagCount(tag), FreeImage_GetTagValue(tag));
+ }
+ }
+ }
+
+ return TRUE;
+}
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