예제 #1
0
/**
Write all known exif tags

@param tif TIFF handle
@param md_model Metadata model from where to load the tags
@param dib Image being written
@return Returns TRUE if successful, returns FALSE otherwise
*/
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];
		
		const uint32 tag_id = TIFFFieldTag(fld);

		if(skip_write_field(tif, tag_id)) {
			// 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)tag_id, defaultKey);

		if(FreeImage_GetMetadata(FIMD_EXIF_MAIN, dib, key, &tag)) {
			FREE_IMAGE_MDTYPE tag_type = FreeImage_GetTagType(tag);
			TIFFDataType tif_tag_type = TIFFFieldDataType(fld);
			
			// 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((unsigned)_TIFFDataSize(tif_tag_type) != FreeImage_TagDataWidth(tag_type)) {
				// skip tag or _TIFFmemcpy will fail
				continue;
			}

			if(tag_type == FIDT_ASCII) {
				TIFFSetField(tif, tag_id, FreeImage_GetTagValue(tag));
			} else {
				TIFFSetField(tif, tag_id, FreeImage_GetTagCount(tag), FreeImage_GetTagValue(tag));
			}
		}
	}

	return TRUE;
}
예제 #2
0
파일: tiffset.c 프로젝트: BRAINSia/libtiff
int
main(int argc, char* argv[])
{
    TIFF *tiff;
    int  arg_index;

    if (argc < 2)
        usage();

    tiff = TIFFOpen(argv[argc-1], "r+");
    if (tiff == NULL)
        return 2;

    for( arg_index = 1; arg_index < argc-1; arg_index++ ) {
	if (strcmp(argv[arg_index],"-d") == 0 && arg_index < argc-2) {
	    arg_index++;
	    if( TIFFSetDirectory(tiff, atoi(argv[arg_index]) ) != 1 )
            {
               fprintf( stderr, "Failed to set directory=%s\n", argv[arg_index] );
               return 6;
            }
	    arg_index++;
	}
	if (strcmp(argv[arg_index],"-sd") == 0 && arg_index < argc-2) {
	    arg_index++;
	    if( TIFFSetSubDirectory(tiff, atoi(argv[arg_index]) ) != 1 )
            {
               fprintf( stderr, "Failed to set sub directory=%s\n", argv[arg_index] );
               return 7;
            }
	    arg_index++;
	}
    /* Add unset option to tiffset -- Zach Baker ([email protected]) 11/14/2012 */ 
    if (strcmp(argv[arg_index],"-u") == 0 && arg_index < argc-2) {
            const TIFFField *fip;
            const char *tagname;
            arg_index++;
            tagname = argv[arg_index];
            fip = GetField(tiff, tagname);
            if (!fip)
                return 3;

            if (TIFFUnsetField(tiff, TIFFFieldTag(fip)) != 1)
            {
                    fprintf(stderr, "Failed to unset %s\n", TIFFFieldName(fip));
            }
            arg_index++;
    } else if (strcmp(argv[arg_index],"-s") == 0 && arg_index < argc-3) {
            const TIFFField *fip;
            const char *tagname;

            arg_index++;
            tagname = argv[arg_index];
            fip = GetField(tiff, tagname);

            if (!fip)
                return 3;

            arg_index++;
            if (TIFFFieldDataType(fip) == TIFF_ASCII) {
                if (TIFFSetField(tiff, TIFFFieldTag(fip), argv[arg_index]) != 1)
                    fprintf( stderr, "Failed to set %s=%s\n",
                             TIFFFieldName(fip), argv[arg_index] );
            } else if (TIFFFieldWriteCount(fip) > 0
		       || TIFFFieldWriteCount(fip) == TIFF_VARIABLE) {
                int     ret = 1;
                short   wc;

                if (TIFFFieldWriteCount(fip) == TIFF_VARIABLE)
                        wc = atoi(argv[arg_index++]);
                else
                        wc = TIFFFieldWriteCount(fip);

                if (argc - arg_index < wc) {
                    fprintf( stderr,
                             "Number of tag values is not enough. "
                             "Expected %d values for %s tag, got %d\n",
                             wc, TIFFFieldName(fip), argc - arg_index);
                    return 4;
                }
                    
                if (wc > 1) {
                        int     i, size;
                        void    *array;

                        switch (TIFFFieldDataType(fip)) {
                                /*
                                 * XXX: We can't use TIFFDataWidth()
                                 * to determine the space needed to store
                                 * the value. For TIFF_RATIONAL values
                                 * TIFFDataWidth() returns 8, but we use 4-byte
                                 * float to represent rationals.
                                 */
                                case TIFF_BYTE:
                                case TIFF_ASCII:
                                case TIFF_SBYTE:
                                case TIFF_UNDEFINED:
				default:
                                    size = 1;
                                    break;

                                case TIFF_SHORT:
                                case TIFF_SSHORT:
                                    size = 2;
                                    break;

                                case TIFF_LONG:
                                case TIFF_SLONG:
                                case TIFF_FLOAT:
                                case TIFF_IFD:
                                case TIFF_RATIONAL:
                                case TIFF_SRATIONAL:
                                    size = 4;
                                    break;

                                case TIFF_DOUBLE:
                                    size = 8;
                                    break;
                        }

                        array = _TIFFmalloc(wc * size);
                        if (!array) {
                                fprintf(stderr, "No space for %s tag\n",
                                        tagname);
                                return 4;
                        }

                        switch (TIFFFieldDataType(fip)) {
                            case TIFF_BYTE:
                                for (i = 0; i < wc; i++)
                                    ((uint8 *)array)[i] = atoi(argv[arg_index+i]);
                                break;
                            case TIFF_SHORT:
                                for (i = 0; i < wc; i++)
                                    ((uint16 *)array)[i] = atoi(argv[arg_index+i]);
                                break;
                            case TIFF_SBYTE:
                                for (i = 0; i < wc; i++)
                                    ((int8 *)array)[i] = atoi(argv[arg_index+i]);
                                break;
                            case TIFF_SSHORT:
                                for (i = 0; i < wc; i++)
                                    ((int16 *)array)[i] = atoi(argv[arg_index+i]);
                                break;
                            case TIFF_LONG:
                                for (i = 0; i < wc; i++)
                                    ((uint32 *)array)[i] = atol(argv[arg_index+i]);
                                break;
                            case TIFF_SLONG:
                            case TIFF_IFD:
                                for (i = 0; i < wc; i++)
                                    ((uint32 *)array)[i] = atol(argv[arg_index+i]);
                                break;
                            case TIFF_DOUBLE:
                                for (i = 0; i < wc; i++)
                                    ((double *)array)[i] = atof(argv[arg_index+i]);
                                break;
                            case TIFF_RATIONAL:
                            case TIFF_SRATIONAL:
                            case TIFF_FLOAT:
                                for (i = 0; i < wc; i++)
                                    ((float *)array)[i] = (float)atof(argv[arg_index+i]);
                                break;
                            default:
                                break;
                        }
                
                        if (TIFFFieldPassCount(fip)) {
                                ret = TIFFSetField(tiff, TIFFFieldTag(fip),
                                                   wc, array);
                        } else if (TIFFFieldTag(fip) == TIFFTAG_PAGENUMBER
				   || TIFFFieldTag(fip) == TIFFTAG_HALFTONEHINTS
				   || TIFFFieldTag(fip) == TIFFTAG_YCBCRSUBSAMPLING
				   || TIFFFieldTag(fip) == TIFFTAG_DOTRANGE) {
       				if (TIFFFieldDataType(fip) == TIFF_BYTE) {
					ret = TIFFSetField(tiff, TIFFFieldTag(fip),
						((uint8 *)array)[0], ((uint8 *)array)[1]);
				} else if (TIFFFieldDataType(fip) == TIFF_SHORT) {
					ret = TIFFSetField(tiff, TIFFFieldTag(fip),
						((uint16 *)array)[0], ((uint16 *)array)[1]);
				}
			} else {
                                ret = TIFFSetField(tiff, TIFFFieldTag(fip),
                                                   array);
                        }

                        _TIFFfree(array);
                } else {
                        switch (TIFFFieldDataType(fip)) {
                            case TIFF_BYTE:
                            case TIFF_SHORT:
                            case TIFF_SBYTE:
                            case TIFF_SSHORT:
                                ret = TIFFSetField(tiff, TIFFFieldTag(fip),
                                                   atoi(argv[arg_index++]));
                                break;
                            case TIFF_LONG:
                            case TIFF_SLONG:
                            case TIFF_IFD:
                                ret = TIFFSetField(tiff, TIFFFieldTag(fip),
                                                   atol(argv[arg_index++]));
                                break;
                            case TIFF_DOUBLE:
                                ret = TIFFSetField(tiff, TIFFFieldTag(fip),
                                                   atof(argv[arg_index++]));
                                break;
                            case TIFF_RATIONAL:
                            case TIFF_SRATIONAL:
                            case TIFF_FLOAT:
                                ret = TIFFSetField(tiff, TIFFFieldTag(fip),
                                                   (float)atof(argv[arg_index++]));
                                break;
                            default:
                                break;
                        }
                }

                if (ret != 1)
                    fprintf(stderr, "Failed to set %s\n", TIFFFieldName(fip));
                arg_index += wc;
            }
        } else if (strcmp(argv[arg_index],"-sf") == 0 && arg_index < argc-3) {
            FILE    *fp;
            const TIFFField *fip;
            char    *text;
            size_t  len;

            arg_index++;
            fip = GetField(tiff, argv[arg_index]);

            if (!fip)
                return 3;

            if (TIFFFieldDataType(fip) != TIFF_ASCII) {
                fprintf( stderr,
                         "Only ASCII tags can be set from file. "
                         "%s is not ASCII tag.\n", TIFFFieldName(fip) );
                return 5;
            }

            arg_index++;
            fp = fopen( argv[arg_index], "rt" );
            if(fp == NULL) {
                perror( argv[arg_index] );
                continue;
            }

            text = (char *) malloc(1000000);
            len = fread( text, 1, 999999, fp );
            text[len] = '\0';

            fclose( fp );

            if(TIFFSetField( tiff, TIFFFieldTag(fip), text ) != 1) {
                fprintf(stderr, "Failed to set %s from file %s\n", 
                        TIFFFieldName(fip), argv[arg_index]);
            }

            _TIFFfree( text );
            arg_index++;
        } else {
            fprintf(stderr, "Unrecognised option: %s\n",
                    argv[arg_index]);
            usage();
        }
    }

    TIFFRewriteDirectory(tiff);
    TIFFClose(tiff);
    return 0;
}
예제 #3
0
/**
Read a single Exif tag

@param tif TIFF handle
@param tag_id TIFF Tag ID
@param dib Image being read
@param md_model Metadata model where to store the tag
@return Returns TRUE if successful, returns FALSE otherwise
*/
static BOOL 
tiff_read_exif_tag(TIFF *tif, uint32 tag_id, FIBITMAP *dib, TagLib::MDMODEL md_model) {
	uint32 value_count = 0;
	int mem_alloc = 0;
	void *raw_data = NULL;

	if(tag_id == TIFFTAG_EXIFIFD) {
		// Exif IFD offset - skip this tag
		// md_model should be EXIF_MAIN, the Exif IFD is processed later using the EXIF_EXIF metadata model
		return TRUE;
	}
	if((tag_id == TIFFTAG_GPSIFD) && (md_model == TagLib::EXIF_MAIN)) {
		// Exif GPS IFD offset - skip this tag
		// should be processed in another way ...
		return TRUE;
	}
	
	TagLib& tagLib = TagLib::instance();

	// get the tag key - use NULL to avoid reading GeoTIFF tags
	const char *key = tagLib.getTagFieldName(md_model, (WORD)tag_id, NULL);
	if(key == NULL) {
		return TRUE;
	}

	const TIFFField *fip = TIFFFieldWithTag(tif, tag_id);
	if(fip == NULL) {
		return TRUE;
	}

	if(TIFFFieldPassCount(fip)) { 
		// a count value is required for 'TIFFGetField'

		if (TIFFFieldReadCount(fip) != TIFF_VARIABLE2) {
			// a count is required, it will be of type uint16
			uint16 value_count16 = 0;
			if(TIFFGetField(tif, tag_id, &value_count16, &raw_data) != 1) {
				// stop, ignore error
				return TRUE;
			}
			value_count = value_count16;
		} else {
			// a count is required, it will be of type uint32
			uint32 value_count32 = 0;
			if(TIFFGetField(tif, tag_id, &value_count32, &raw_data) != 1) {
				// stop, ignore error
				return TRUE;
			}
			value_count = value_count32;
		}

	} else {
		// determine count

		if (TIFFFieldReadCount(fip) == TIFF_VARIABLE || TIFFFieldReadCount(fip) == TIFF_VARIABLE2) {
			value_count = 1;
		} else if (TIFFFieldReadCount(fip) == TIFF_SPP) {
			uint16 spp;
			TIFFGetFieldDefaulted(tif, TIFFTAG_SAMPLESPERPIXEL, &spp);
			value_count = spp;
		} else {
			value_count = TIFFFieldReadCount(fip);
		}

		// access fields as pointers to data
		// (### determining this is NOT robust... and hardly can be. It is implemented looking the _TIFFVGetField code)

		if(TIFFFieldTag(fip) == TIFFTAG_TRANSFERFUNCTION) {
			// reading this tag cause a bug probably located somewhere inside libtiff
			return TRUE;
		}

		if ((TIFFFieldDataType(fip) == TIFF_ASCII
		     || TIFFFieldReadCount(fip) == TIFF_VARIABLE
		     || TIFFFieldReadCount(fip) == TIFF_VARIABLE2
		     || TIFFFieldReadCount(fip) == TIFF_SPP
			 || value_count > 1)
			 
			 && TIFFFieldTag(fip) != TIFFTAG_PAGENUMBER
			 && TIFFFieldTag(fip) != TIFFTAG_HALFTONEHINTS
			 && TIFFFieldTag(fip) != TIFFTAG_YCBCRSUBSAMPLING
			 && TIFFFieldTag(fip) != TIFFTAG_DOTRANGE

			 && TIFFFieldTag(fip) != TIFFTAG_BITSPERSAMPLE	//<- these two are tricky - 
			 && TIFFFieldTag(fip) != TIFFTAG_COMPRESSION	//<- they are defined as TIFF_VARIABLE but in reality return a single value
			 ) {
				 if(TIFFGetField(tif, tag_id, &raw_data) != 1) {
					 // stop, ignore error
					 return TRUE;
				 }
		} else {
			int value_size = 0;

			// access fields as values

			// Note: 
			// For TIFF_RATIONAL values, TIFFDataWidth() returns 8, but LibTIFF use internaly 4-byte float to represent rationals.
			{
				TIFFDataType tag_type = TIFFFieldDataType(fip);
				switch(tag_type) {
					case TIFF_RATIONAL:
					case TIFF_SRATIONAL:
						value_size = 4;
						break;
					default:
						value_size = TIFFDataWidth(tag_type);
						break;
				}
			}

			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_id, raw_data);
					break;
				case 2:
					ok = TIFFGetField(tif, tag_id, raw_data, (BYTE*)(raw_data) + value_size*1);
					break;
/* # we might need more in the future:
				case 3:
					ok = TIFFGetField(tif, tag_id, 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", TIFFFieldName(fip));
					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_id);
	FreeImage_SetTagKey(fitag, key);

	switch(TIFFFieldDataType(fip)) {
		case TIFF_BYTE:
			FreeImage_SetTagType(fitag, FIDT_BYTE);
			FreeImage_SetTagLength(fitag, TIFFDataWidth( TIFFFieldDataType(fip) ) * 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( TIFFFieldDataType(fip) ) * 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( TIFFFieldDataType(fip) ) * 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( TIFFFieldDataType(fip) ) * 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( TIFFFieldDataType(fip) ) * 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( TIFFFieldDataType(fip) ) * 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( TIFFFieldDataType(fip) ) * 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( TIFFFieldDataType(fip) ) * 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( TIFFFieldDataType(fip) ) * 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( TIFFFieldDataType(fip) ) * 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( TIFFFieldDataType(fip) ) * 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( TIFFFieldDataType(fip) ) * 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( TIFFFieldDataType(fip) ) * 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( TIFFFieldDataType(fip) ) * 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( TIFFFieldDataType(fip) ) * value_count);
			FreeImage_SetTagCount(fitag, value_count);
			FreeImage_SetTagValue(fitag, raw_data);
			break;

		case TIFF_ASCII:
		default: {
			size_t length = 0;
			if(!mem_alloc && (TIFFFieldDataType(fip) == TIFF_ASCII) && (TIFFFieldReadCount(fip) == TIFF_VARIABLE)) {
				// when metadata tag is of type ASCII and it's value is of variable size (TIFF_VARIABLE),
				// tiff_read_exif_tag function gives length of 1 so all strings are truncated ...
				// ... try to avoid this by using an explicit calculation for 'length'
				length = strlen((char*)raw_data) + 1;
			}
			else {
				// remember that raw_data = _TIFFmalloc(value_size * value_count);
				const int value_size = TIFFDataWidth( TIFFFieldDataType(fip) );
				length = value_size * value_count;
			}
			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_id);
	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;
}