/**
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;
}
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;
}
/**
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;
}