void
_TIFFSetupFieldInfo(TIFF* tif, const TIFFFieldInfo info[], size_t n)
{
if (tif->tif_fieldinfo) {
size_t i;
for (i = 0; i < tif->tif_nfields; i++)
{
TIFFFieldInfo *fld = tif->tif_fieldinfo[i];
if (fld->field_bit == FIELD_CUSTOM &&
strncmp("Tag ", fld->field_name, 4) == 0) {
_TIFFfree(fld->field_name);
_TIFFfree(fld);
}
}
_TIFFfree(tif->tif_fieldinfo);
tif->tif_nfields = 0;
}
if (!_TIFFMergeFieldInfo(tif, info, n))
{
TIFFErrorExt(tif->tif_clientdata, "_TIFFSetupFieldInfo",
"Setting up field info failed");
}
}
static void _XTIFFLocalDefaultDirectory(TIFF *tif)
{
xtiff *xt = XTIFFDIR(tif);
XTIFFDirectory* xd = &xt->xtif_dir;
/* Install the extended Tag field info */
_TIFFMergeFieldInfo(tif, xtiffFieldInfo, N(xtiffFieldInfo));
/*
* free up any dynamically allocated arrays
* before the new directory is read in.
*/
_XTIFFFreeDirectory(xt);
_TIFFmemset(xt,0,sizeof(xtiff));
/* Override the tag access methods */
PARENT(xt,vsetfield) = TIFFMEMBER(tif,vsetfield);
TIFFMEMBER(tif,vsetfield) = _XTIFFVSetField;
PARENT(xt,vgetfield) = TIFFMEMBER(tif,vgetfield);
TIFFMEMBER(tif,vgetfield) = _XTIFFVGetField;
/*
* XXX Set up any default values here.
*/
xd->xd_example_single = 234;
}
int TIFFInitJBIG(TIFF* tif, int scheme)
{
JBIGState* codec = NULL;
assert(scheme == COMPRESSION_JBIG);
/*
* Merge codec-specific tag information.
*/
if (!_TIFFMergeFieldInfo(tif, jbigFieldInfo,
TIFFArrayCount(jbigFieldInfo))) {
TIFFErrorExt(tif->tif_clientdata, "TIFFInitJBIG",
"Merging JBIG codec-specific tags failed");
return 0;
}
/* Allocate memory for the JBIGState structure.*/
tif->tif_data = (tdata_t)_TIFFmalloc(sizeof(JBIGState));
if (tif->tif_data == NULL)
{
TIFFError("TIFFInitJBIG", "Not enough memory for JBIGState");
return 0;
}
_TIFFmemset(tif->tif_data, 0, sizeof(JBIGState));
codec = GetJBIGState(tif);
/* Initialize codec private fields */
codec->recvparams = 0;
codec->subaddress = NULL;
codec->faxdcs = NULL;
codec->recvtime = 0;
/*
* Override parent get/set field methods.
*/
codec->vgetparent = tif->tif_tagmethods.vgetfield;
codec->vsetparent = tif->tif_tagmethods.vsetfield;
tif->tif_tagmethods.vgetfield = JBIGVGetField;
tif->tif_tagmethods.vsetfield = JBIGVSetField;
tif->tif_tagmethods.printdir = JBIGPrintDir;
/*
* These flags are set so the JBIG Codec can control when to reverse
* bits and when not to and to allow the jbig decoder and bit reverser
* to write to memory when necessary.
*/
tif->tif_flags |= TIFF_NOBITREV;
tif->tif_flags &= ~TIFF_MAPPED;
/* Setup the function pointers for encode, decode, and cleanup. */
tif->tif_setupdecode = JBIGSetupDecode;
tif->tif_decodestrip = JBIGDecode;
tif->tif_setupencode = JBIGSetupEncode;
tif->tif_encodestrip = JBIGEncode;
tif->tif_cleanup = JBIGCleanup;
return 1;
}
int
TIFFInitZIP(TIFF* tif, int scheme)
{
ZIPState* sp;
assert( (scheme == COMPRESSION_DEFLATE)
|| (scheme == COMPRESSION_ADOBE_DEFLATE));
/*
* Allocate state block so tag methods have storage to record values.
*/
tif->tif_data = (tidata_t) _TIFFmalloc(sizeof (ZIPState));
if (tif->tif_data == NULL)
goto bad;
sp = ZState(tif);
sp->stream.zalloc = NULL;
sp->stream.zfree = NULL;
sp->stream.opaque = NULL;
sp->stream.data_type = Z_BINARY;
/*
* Merge codec-specific tag information and
* override parent get/set field methods.
*/
_TIFFMergeFieldInfo(tif, zipFieldInfo, TIFFArrayCount(zipFieldInfo));
sp->vgetparent = tif->tif_tagmethods.vgetfield;
tif->tif_tagmethods.vgetfield = ZIPVGetField; /* hook for codec tags */
sp->vsetparent = tif->tif_tagmethods.vsetfield;
tif->tif_tagmethods.vsetfield = ZIPVSetField; /* hook for codec tags */
/* Default values for codec-specific fields */
sp->zipquality = Z_DEFAULT_COMPRESSION; /* default comp. level */
sp->state = 0;
/*
* Install codec methods.
*/
tif->tif_setupdecode = ZIPSetupDecode;
tif->tif_predecode = ZIPPreDecode;
tif->tif_decoderow = ZIPDecode;
tif->tif_decodestrip = ZIPDecode;
tif->tif_decodetile = ZIPDecode;
tif->tif_setupencode = ZIPSetupEncode;
tif->tif_preencode = ZIPPreEncode;
tif->tif_postencode = ZIPPostEncode;
tif->tif_encoderow = ZIPEncode;
tif->tif_encodestrip = ZIPEncode;
tif->tif_encodetile = ZIPEncode;
tif->tif_cleanup = ZIPCleanup;
/*
* Setup predictor setup.
*/
(void) TIFFPredictorInit(tif);
return (1);
bad:
TIFFErrorExt(tif->tif_clientdata, "TIFFInitZIP",
"No space for ZIP state block");
return (0);
}
void
_TIFFSetupFieldInfo(TIFF* tif)
{
if (tif->tif_fieldinfo) {
_TIFFfree(tif->tif_fieldinfo);
tif->tif_nfields = 0;
}
_TIFFMergeFieldInfo(tif, tiffFieldInfo, N(tiffFieldInfo));
}
void
TIFFMergeFieldInfo(TIFF* tif, const TIFFFieldInfo info[], int n)
{
if (_TIFFMergeFieldInfo(tif, info, n) < 0)
{
TIFFErrorExt(tif->tif_clientdata, "TIFFMergeFieldInfo",
"Merging block of %d fields failed", n);
}
}
const TIFFFieldInfo*
_TIFFFindOrRegisterFieldInfo( TIFF *tif, ttag_t tag, TIFFDataType dt )
{
const TIFFFieldInfo *fld;
fld = _TIFFFindFieldInfo( tif, tag, dt );
if( fld == NULL )
{
fld = _TIFFCreateAnonFieldInfo( tif, tag, dt );
_TIFFMergeFieldInfo( tif, fld, 1 );
}
return fld;
}
void
_TIFFSetupFieldInfo(TIFF* tif, const TIFFFieldInfo info[], size_t n)
{
if (tif->tif_fieldinfo) {
size_t i;
for (i = 0; i < tif->tif_nfields; i++)
{
TIFFFieldInfo *fld = tif->tif_fieldinfo[i];
if (fld->field_bit == FIELD_CUSTOM &&
strncmp("Tag ", fld->field_name, 4) == 0) {
_TIFFfree(fld->field_name);
_TIFFfree(fld);
}
}
_TIFFfree(tif->tif_fieldinfo);
tif->tif_nfields = 0;
}
_TIFFMergeFieldInfo(tif, info, n);
}
