/* Currently called by 1 function with i == pxformseq->numpxforms - 1 */
static int jas_cmpxformseq_delete(jas_cmpxformseq_t *pxformseq, int i)
{
jas_cmpxform_destroy(pxformseq->pxforms[i]);
pxformseq->pxforms[i] = 0;
--pxformseq->numpxforms;
return 0;
}
static int jas_cmpxformseq_delete(jas_cmpxformseq_t *pxformseq, int i)
{
assert(i >= 0 && i < pxformseq->numpxforms);
if (i != pxformseq->numpxforms - 1)
abort();
jas_cmpxform_destroy(pxformseq->pxforms[i]);
pxformseq->pxforms[i] = 0;
--pxformseq->numpxforms;
return 0;
}
static int mono(jas_iccprof_t *iccprof, int op, jas_cmpxformseq_t **retpxformseq)
{
jas_iccattrval_t *graytrc;
jas_cmshapmat_t *shapmat;
jas_cmpxform_t *pxform;
jas_cmpxformseq_t *pxformseq;
jas_cmshapmatlut_t lut;
jas_cmshapmatlut_init(&lut);
if (!(graytrc = jas_iccprof_getattr(iccprof, JAS_ICC_TAG_GRYTRC)) ||
graytrc->type != JAS_ICC_TYPE_CURV)
goto error;
if (!(pxform = jas_cmpxform_createshapmat()))
goto error;
shapmat = &pxform->data.shapmat;
if (!(pxformseq = jas_cmpxformseq_create()))
goto error;
if (jas_cmpxformseq_insertpxform(pxformseq, -1, pxform))
goto error;
pxform->numinchans = 1;
pxform->numoutchans = 3;
shapmat->mono = 1;
shapmat->useluts = 1;
shapmat->usemat = 1;
if (!op) {
shapmat->order = 0;
shapmat->mat[0][0] = 0.9642;
shapmat->mat[1][0] = 1.0;
shapmat->mat[2][0] = 0.8249;
if (jas_cmshapmatlut_set(&shapmat->luts[0], &graytrc->data.curv))
goto error;
} else {
shapmat->order = 1;
shapmat->mat[0][0] = 1.0 / 0.9642;
shapmat->mat[1][0] = 1.0;
shapmat->mat[2][0] = 1.0 / 0.8249;
jas_cmshapmatlut_init(&lut);
if (jas_cmshapmatlut_set(&lut, &graytrc->data.curv))
goto error;
if (jas_cmshapmatlut_invert(&shapmat->luts[0], &lut, lut.size))
goto error;
jas_cmshapmatlut_cleanup(&lut);
}
jas_iccattrval_destroy(graytrc);
jas_cmpxform_destroy(pxform);
*retpxformseq = pxformseq;
return 0;
error:
return -1;
}
static jas_cmprof_t *jas_cmprof_createsycc()
{
jas_cmprof_t *prof;
jas_cmpxform_t *fwdpxform;
jas_cmpxform_t *revpxform;
jas_cmshapmat_t *fwdshapmat;
jas_cmshapmat_t *revshapmat;
int i;
int j;
if (!(prof = jas_cmprof_createfromclrspc(JAS_CLRSPC_SRGB)))
goto error;
prof->clrspc = JAS_CLRSPC_SYCBCR;
assert(prof->numchans == 3 && prof->numrefchans == 3);
assert(prof->refclrspc == JAS_CLRSPC_CIEXYZ);
if (!(fwdpxform = jas_cmpxform_createshapmat()))
goto error;
fwdpxform->numinchans = 3;
fwdpxform->numoutchans = 3;
fwdshapmat = &fwdpxform->data.shapmat;
fwdshapmat->mono = 0;
fwdshapmat->order = 0;
fwdshapmat->useluts = 0;
fwdshapmat->usemat = 1;
fwdshapmat->mat[0][0] = 1.0;
fwdshapmat->mat[0][1] = 0.0;
fwdshapmat->mat[0][2] = 1.402;
fwdshapmat->mat[1][0] = 1.0;
fwdshapmat->mat[1][1] = -0.34413;
fwdshapmat->mat[1][2] = -0.71414;
fwdshapmat->mat[2][0] = 1.0;
fwdshapmat->mat[2][1] = 1.772;
fwdshapmat->mat[2][2] = 0.0;
fwdshapmat->mat[0][3] = -0.5 * (1.402);
fwdshapmat->mat[1][3] = -0.5 * (-0.34413 - 0.71414);
fwdshapmat->mat[2][3] = -0.5 * (1.772);
if (!(revpxform = jas_cmpxform_createshapmat()))
goto error;
revpxform->numinchans = 3;
revpxform->numoutchans = 3;
revshapmat = &revpxform->data.shapmat;
revshapmat->mono = 0;
revshapmat->order = 1;
revshapmat->useluts = 0;
revshapmat->usemat = 1;
jas_cmshapmat_invmat(revshapmat->mat, fwdshapmat->mat);
for (i = 0; i < JAS_CMXFORM_NUMINTENTS; ++i) {
j = SEQFWD(i);
if (prof->pxformseqs[j]) {
if (jas_cmpxformseq_insertpxform(prof->pxformseqs[j], 0,
fwdpxform))
goto error;
}
j = SEQREV(i);
if (prof->pxformseqs[j]) {
if (jas_cmpxformseq_insertpxform(prof->pxformseqs[j],
-1, revpxform))
goto error;
}
}
jas_cmpxform_destroy(fwdpxform);
jas_cmpxform_destroy(revpxform);
return prof;
error:
return 0;
}
static int triclr(jas_iccprof_t *iccprof, int op, jas_cmpxformseq_t **retpxformseq)
{
int i;
jas_iccattrval_t *trcs[3];
jas_iccattrval_t *cols[3];
jas_cmshapmat_t *shapmat;
jas_cmpxform_t *pxform;
jas_cmpxformseq_t *pxformseq;
jas_cmreal_t mat[3][4];
jas_cmshapmatlut_t lut;
pxform = 0;
pxformseq = 0;
for (i = 0; i < 3; ++i) {
trcs[i] = 0;
cols[i] = 0;
}
jas_cmshapmatlut_init(&lut);
if (!(trcs[0] = jas_iccprof_getattr(iccprof, JAS_ICC_TAG_REDTRC)) ||
!(trcs[1] = jas_iccprof_getattr(iccprof, JAS_ICC_TAG_GRNTRC)) ||
!(trcs[2] = jas_iccprof_getattr(iccprof, JAS_ICC_TAG_BLUTRC)) ||
!(cols[0] = jas_iccprof_getattr(iccprof, JAS_ICC_TAG_REDMATCOL)) ||
!(cols[1] = jas_iccprof_getattr(iccprof, JAS_ICC_TAG_GRNMATCOL)) ||
!(cols[2] = jas_iccprof_getattr(iccprof, JAS_ICC_TAG_BLUMATCOL)))
goto error;
for (i = 0; i < 3; ++i) {
if (trcs[i]->type != JAS_ICC_TYPE_CURV ||
cols[i]->type != JAS_ICC_TYPE_XYZ)
goto error;
}
if (!(pxform = jas_cmpxform_createshapmat()))
goto error;
pxform->numinchans = 3;
pxform->numoutchans = 3;
shapmat = &pxform->data.shapmat;
if (!(pxformseq = jas_cmpxformseq_create()))
goto error;
if (jas_cmpxformseq_insertpxform(pxformseq, -1, pxform))
goto error;
shapmat->mono = 0;
shapmat->useluts = 1;
shapmat->usemat = 1;
if (!op) {
shapmat->order = 0;
for (i = 0; i < 3; ++i) {
shapmat->mat[0][i] = cols[i]->data.xyz.x / 65536.0;
shapmat->mat[1][i] = cols[i]->data.xyz.y / 65536.0;
shapmat->mat[2][i] = cols[i]->data.xyz.z / 65536.0;
}
for (i = 0; i < 3; ++i)
shapmat->mat[i][3] = 0.0;
for (i = 0; i < 3; ++i) {
if (jas_cmshapmatlut_set(&shapmat->luts[i], &trcs[i]->data.curv))
goto error;
}
} else {
shapmat->order = 1;
for (i = 0; i < 3; ++i) {
mat[0][i] = cols[i]->data.xyz.x / 65536.0;
mat[1][i] = cols[i]->data.xyz.y / 65536.0;
mat[2][i] = cols[i]->data.xyz.z / 65536.0;
}
for (i = 0; i < 3; ++i)
mat[i][3] = 0.0;
if (jas_cmshapmat_invmat(shapmat->mat, mat))
goto error;
for (i = 0; i < 3; ++i) {
jas_cmshapmatlut_init(&lut);
if (jas_cmshapmatlut_set(&lut, &trcs[i]->data.curv))
goto error;
if (jas_cmshapmatlut_invert(&shapmat->luts[i], &lut, lut.size))
goto error;
jas_cmshapmatlut_cleanup(&lut);
}
}
for (i = 0; i < 3; ++i) {
jas_iccattrval_destroy(trcs[i]);
jas_iccattrval_destroy(cols[i]);
}
jas_cmpxform_destroy(pxform);
*retpxformseq = pxformseq;
return 0;
error:
for (i = 0; i < 3; ++i) {
if (trcs[i]) {
jas_iccattrval_destroy(trcs[i]);
}
if (cols[i]) {
jas_iccattrval_destroy(cols[i]);
}
}
if (pxformseq) {
jas_cmpxformseq_destroy(pxformseq);
}
if (pxform) {
jas_cmpxform_destroy(pxform);
}
return -1;
}
