PTErr_t
makeForwardXformMono ( ResponseRecord_p grayTRC,
fut_p theFut)
{
PTErr_t PTErr = KCP_FAILURE;
KpInt32_t futReturn, i1;
fut_otbldat_p otblDat;
double gamma;
fut_calcData_t calcData;
KpUInt16_t rrpData[2] = { 0, RRECORD_DATA_SIZE -1 };
ResponseRecord_t rrt;
KpUInt16_t *pCurveData = NULL;
/* compute new table entries */
calcData.chan = 0; /* always uses 1st input chan */
for (i1 = 0; i1 < FWD_MONO_OCHANS; i1++) {
if (( ! IS_CHAN(theFut->chan[i1])) ||
!fut_calc_gtblEx (theFut->chan[i1]->gtbl, fut_grampEx, &calcData) ||
!fut_calc_otblEx (theFut->chan[i1]->otbl, otblFunc, NULL)) {
goto ErrOut0;
}
}
/* get address of the first output table */
futReturn = fut_get_otbl (theFut, 0, &otblDat);
if ((futReturn != 1) || (otblDat == (fut_otbldat_p)NULL)) {
goto ErrOut0;
}
if (PARA_TYPE_SIG == grayTRC->TagSig)
{
pCurveData = (KpUInt16_p) allocBufferPtr (MFV_CURVE_TBL_ENT); /* get memory for curve data */
if (NULL == pCurveData) {
return KCP_NO_MEMORY;
}
makeCurveFromPara (grayTRC->ParaFunction, grayTRC->ParaParams, pCurveData, MFV_CURVE_TBL_ENT);
grayTRC->CurveCount = MFV_CURVE_TBL_ENT;
grayTRC->CurveData = pCurveData;
}
/* setup the output table */
switch (grayTRC->CurveCount)
{
case 0:
/* setup the responseRecord struct */
rrt.CurveCount = 2;
rrt.CurveData = rrpData;
/* make the output table */
PTErr = calcOtblLSN (otblDat, &rrt);
break;
case 1:
gamma = (double)grayTRC->CurveData[0] / SCALEDOT8;
if (gamma <= 0.0) {
goto ErrOut0;
}
/* make the output table */
PTErr = calcOtblLS1 (otblDat, gamma);
break;
default:
/* make the output table */
makeMonotonic (grayTRC->CurveCount, grayTRC->CurveData);
PTErr = calcOtblLSN (otblDat, grayTRC);
}
GetOut:
if (NULL != pCurveData) {
freeBufferPtr (pCurveData);
}
return PTErr;
ErrOut0:
PTErr = KCP_SYSERR_0;
goto GetOut;
}
/*-------------------------------------------------------------------
* init_xfer -- initialize the transfer tables by transferring coarse
* control points from an ICC ResponseRecord
* and interpolating the fine tables from them;
* returns +1 for success, -1 for failure to
* allocate memory for coarse table
*-------------------------------------------------------------------
*/
PTErr_t
init_xfer ( xfer_p xferp,
ResponseRecord_p rrp)
{
PTErr_t PTErr = KCP_SUCCESS;
double val; /* input variables */
KpInt32_t numcoarse; /* number of input control points */
double_p coarse[2]; /* storage for control points */
KpInt32_t i; /* control-point index */
KpInt32_t hint;
KpUInt16_t *pCurveData = NULL;
/* Verify inputs: */
if (xferp == (xfer_p)NULL) return KCP_SYSERR_0;
if (rrp == (ResponseRecord_p)NULL) return KCP_SYSERR_0;
if (PARA_TYPE_SIG == rrp->TagSig)
{
pCurveData = (KpUInt16_p) allocBufferPtr (MFV_CURVE_TBL_ENT*sizeof(KpUInt16_t)); /* get memory for curve data */
if (NULL == pCurveData) {
return KCP_NO_MEMORY;
}
makeCurveFromPara (rrp->ParaFunction, rrp->ParaParams, pCurveData, MFV_CURVE_TBL_ENT);
rrp->CurveCount = MFV_CURVE_TBL_ENT;
rrp->CurveData = pCurveData;
}
if (rrp->CurveCount < 2) {
PTErr = KCP_SYSERR_0;
goto ErrOut;
}
if (rrp->CurveData == (KpUInt16_p)NULL) {
PTErr = KCP_SYSERR_0;
goto ErrOut;
}
/* Allocate space for coarse tables: */
numcoarse = rrp->CurveCount - 1; /* skip zero entry to avoid infinity in logarithm */
coarse[0] = (double_p)ALLOC (numcoarse, sizeof(double));
if (coarse[0] == NULL)
{
PTErr = KCP_NO_MEMORY;
goto ErrOut;
}
coarse[1] = (double_p)ALLOC (numcoarse, sizeof(double));
if (coarse[1] == NULL)
{
DALLOC (coarse[0]); /* release storage */
PTErr = KCP_NO_MEMORY;
goto ErrOut;
}
/* Build coarse tables from ResponseRecord: */
for (i = 0; i < numcoarse; i++)
{
val = (double)(i + 1) / (double)numcoarse; /* skip zero to avoid infinite log */
coarse[0][i] = -log10 (val);
val = (double)rrp->CurveData[i + 1] / SCALEDOT16;
val = MAX (val, 1.0e-12); /* clip to avoid infinite log */
coarse[1][i] = -log10 (val);
}
/* Build fine tables by interpolating in coarse tables: */
hint = 1;
for (i = 0; i < NUMFINE; i++) /* spaced code values */
{
double code;
code = (double)i * 2.4 / (double)(NUMFINE - 1); /* equally spaced in [0, 2.4] */
xferp->nonlinear[i] = code;
xferp->linear[i] = f4l (code, coarse[0], coarse[1], numcoarse, &hint);
}
/* Delete coarse tables: */
DALLOC (coarse[0]);
DALLOC (coarse[1]);
ErrOut:
if (NULL != pCurveData) {
freeBufferPtr (pCurveData);
}
return PTErr;
}
/*---------------------------------------------------------------------------
* makeInverseXformFromMatrix -- make a fut of given gridsize from given
* matrix data for inverse transform (XYZ -> RGB); return status code
*---------------------------------------------------------------------------
*/
PTErr_t
makeInverseXformFromMatrix (LPMATRIXDATA mdata,
KpUInt32_t interpMode,
KpInt32_p dim,
fut_p theFut)
{
PTErr_t PTErr = KCP_SUCCESS;
ResponseRecord_p rrp;
KpInt32_t i;
fut_chan_p theChan;
fut_gtbl_p theGtbl;
fut_otbl_p theOtbl;
mf2_tbldat_p gtblDat[3], otblDat, prevOtblDat;
KpUInt16_t prevGamma = 0, thisGamma;
double fwdgamma, one[3];
double offset[3] = {1.0 / 3.0, 1.0 / 3.0, 1.0 / 3.0};
KpUInt16_t *pCurveData = NULL;
for (i = 0; i < 3; i++) {
if (!IS_CHAN(theChan = theFut->chan[i])
|| !IS_GTBL(theGtbl = theChan->gtbl)
|| ((gtblDat[i] = theGtbl->refTbl) == NULL) /* Get grid tables */
|| !IS_OTBL(theOtbl = theChan->otbl)
|| ((otblDat = theOtbl->refTbl) == NULL)) { /* Get output table */
return KCP_INCON_PT;
}
if (theOtbl->refTblEntries != FUT_OUTTBL_ENT) return KCP_INCON_PT;
/* Get ResponseRecord: */
rrp = mdata->outResponse[i];
if (NULL == rrp) {
break; /* must only have output tables */
}
if (PARA_TYPE_SIG == rrp->TagSig)
{
pCurveData = (KpUInt16_p) allocBufferPtr (MFV_CURVE_TBL_ENT*sizeof(KpUInt16_t)); /* get memory for curve data */
if (NULL == pCurveData) {
return KCP_NO_MEMORY;
}
makeCurveFromPara (rrp->ParaFunction, rrp->ParaParams, pCurveData, MFV_CURVE_TBL_ENT);
rrp->CurveCount = MFV_CURVE_TBL_ENT;
rrp->CurveData = pCurveData;
}
if ((rrp->CurveCount > 0) && (rrp->CurveData == (KpUInt16_p)NULL)) {
PTErr = KCP_INCON_PT;
goto ErrOut;
}
/* Recompute output table: */
switch (rrp->CurveCount) {
case 0: /* linear response, with clipping */
calcOtbl0 (otblDat);
break;
case 1: /* power law */
thisGamma = rrp->CurveData[0];
if (prevGamma == thisGamma) { /* same gamma, just copy table */
memcpy (otblDat, prevOtblDat, sizeof (*otblDat) * FUT_OUTTBL_ENT);
}
else {
prevGamma = thisGamma;
prevOtblDat = otblDat;
fwdgamma = (double)thisGamma / SCALEDOT8;
if (fwdgamma <= 0.0) {
PTErr = KCP_INCON_PT;
goto ErrOut;
}
calcOtbl1 (otblDat, fwdgamma);
}
break;
default: /* look-up table of arbitrary length */
makeInverseMonotonic (rrp->CurveCount, rrp->CurveData);
if (rrp->CurveCount == theOtbl->refTblEntries) { /* ready-to-use look-up table */
memcpy (otblDat, rrp->CurveData, sizeof (*otblDat) * rrp->CurveCount);
}
else {
PTErr = calcOtblN (otblDat, rrp, interpMode);
if (PTErr != KCP_SUCCESS) {
PTErr = KCP_INCON_PT;
goto ErrOut;
}
}
break;
}
}
/* Compute inverse matrix (XYZ -> RGB): */
one[0] = one[1] = one[2] = 1.0; /* arbitrary vector */
/* replaces matrix with inverse */
if (solvemat (3, mdata->matrix, one) != 0) {
PTErr = KCP_INCON_PT;
goto ErrOut;
}
/* Rescale given matrix by factor of 3 for extended range: */
for (i = 0; i < 3; i++) {
KpInt32_t j;
for (j = 0; j < 3; j++) {
mdata->matrix[i][j] /= 3.0;
}
}
/* Replace grid tables: */
calcGtbl3 (gtblDat, dim, mdata->matrix, offset); /* with offset */
ErrOut:
if (NULL != pCurveData) {
freeBufferPtr (pCurveData);
}
return PTErr;
}