/*
******** nrrdAxesInsert
**
** like reshape, but preserves axis information on old axes, and
** this is only for adding a "stub" axis with length 1. All other
** axis attributes are initialized as usual.
*/
int
nrrdAxesInsert(Nrrd *nout, const Nrrd *nin, unsigned int axis) {
static const char me[]="nrrdAxesInsert", func[]="axinsert";
unsigned int ai;
if (!(nout && nin)) {
biffAddf(NRRD, "%s: got NULL pointer", me);
return 1;
}
if (!( axis <= nin->dim )) {
biffAddf(NRRD, "%s: given axis (%d) outside valid range [0, %d]",
me, axis, nin->dim);
return 1;
}
if (NRRD_DIM_MAX == nin->dim) {
biffAddf(NRRD, "%s: given nrrd already at NRRD_DIM_MAX (%d)",
me, NRRD_DIM_MAX);
return 1;
}
if (nout != nin) {
if (_nrrdCopy(nout, nin, (NRRD_BASIC_INFO_COMMENTS_BIT
| (nrrdStateKeyValuePairsPropagate
? 0
: NRRD_BASIC_INFO_KEYVALUEPAIRS_BIT)))) {
biffAddf(NRRD, "%s:", me);
return 1;
}
}
nout->dim = 1 + nin->dim;
for (ai=nin->dim; ai>axis; ai--) {
_nrrdAxisInfoCopy(&(nout->axis[ai]), &(nin->axis[ai-1]),
NRRD_AXIS_INFO_NONE);
}
/* the ONLY thing we can say about the new axis is its size */
_nrrdAxisInfoInit(&(nout->axis[axis]));
if (!nrrdStateKindNoop) {
/* except maybe the kind */
nout->axis[axis].kind = nrrdKindStub;
}
nout->axis[axis].size = 1;
if (nrrdContentSet_va(nout, func, nin, "%d", axis)) {
biffAddf(NRRD, "%s:", me);
return 1;
}
/* all basic info has already been copied by nrrdCopy() above */
return 0;
}
int
nrrdArithUnaryOp(Nrrd *nout, int op, const Nrrd *nin) {
static const char me[]="nrrdArithUnaryOp";
size_t N, I;
int size[NRRD_DIM_MAX];
double (*insert)(void *v, size_t I, double d),
(*lookup)(const void *v, size_t I), (*uop)(double), val;
if (!(nout && nin)) {
biffAddf(NRRD, "%s: got NULL pointer", me);
return 1;
}
if (nrrdTypeBlock == nin->type) {
biffAddf(NRRD, "%s: can't operate on type %s", me,
airEnumStr(nrrdType, nrrdTypeBlock));
return 1;
}
if (airEnumValCheck(nrrdUnaryOp, op)) {
biffAddf(NRRD, "%s: unary op %d invalid", me, op);
return 1;
}
if (nout != nin) {
if (nrrdCopy(nout, nin)) {
biffAddf(NRRD, "%s:", me);
return 1;
}
}
nrrdAxisInfoGet_nva(nin, nrrdAxisInfoSize, size);
uop = _nrrdUnaryOp[op];
N = nrrdElementNumber(nin);
lookup = nrrdDLookup[nin->type];
insert = nrrdDInsert[nin->type];
for (I=0; I<N; I++) {
val = lookup(nin->data, I);
insert(nout->data, I, uop(val));
}
if (nrrdContentSet_va(nout, airEnumStr(nrrdUnaryOp, op), nin, "")) {
biffAddf(NRRD, "%s:", me);
return 1;
}
nrrdBasicInfoInit(nout,
NRRD_BASIC_INFO_ALL ^ (NRRD_BASIC_INFO_OLDMIN_BIT
| NRRD_BASIC_INFO_OLDMAX_BIT));
return 0;
}
int
nrrdArithAffine(Nrrd *nout, double minIn,
const Nrrd *nin, double maxIn,
double minOut, double maxOut, int clamp) {
static const char me[]="nrrdArithAffine";
size_t I, N;
double (*ins)(void *v, size_t I, double d),
(*lup)(const void *v, size_t I), mmin, mmax;
if ( !nout || nrrdCheck(nin) ) {
biffAddf(NRRD, "%s: got NULL pointer or invalid input", me);
return 1;
}
if (nout != nin) {
if (nrrdCopy(nout, nin)) {
biffAddf(NRRD, "%s: couldn't initialize output", me);
return 1;
}
}
N = nrrdElementNumber(nin);
ins = nrrdDInsert[nout->type];
lup = nrrdDLookup[nin->type];
mmin = AIR_MIN(minOut, maxOut);
mmax = AIR_MAX(minOut, maxOut);
for (I=0; I<N; I++) {
double val;
val = lup(nin->data, I);
val = AIR_AFFINE(minIn, val, maxIn, minOut, maxOut);
if (clamp) {
val = AIR_CLAMP(mmin, val, mmax);
}
ins(nout->data, I, val);
}
/* HEY: it would be much better if the ordering here was the same as in
AIR_AFFINE, but that's not easy with the way the content functions are
now set up */
if (nrrdContentSet_va(nout, "affine", nin,
"%g,%g,%g,%g", minIn, maxIn,
minOut, maxOut)) {
biffAddf(NRRD, "%s:", me);
}
return 0;
}
/*
******** nrrdSlice()
**
** slices a nrrd along a given axis, at a given position.
**
** This is a newer version of the procedure, which is simpler, faster,
** and requires less memory overhead than the first one. It is based
** on the observation that any slice is a periodic square-wave pattern
** in the original data (viewed as a one- dimensional array). The
** characteristics of that periodic pattern are how far from the
** beginning it starts (offset), the length of the "on" part (length),
** the period (period), and the number of periods (numper).
*/
int
nrrdSlice(Nrrd *nout, const Nrrd *cnin, unsigned int saxi, size_t pos) {
static const char me[]="nrrdSlice", func[]="slice";
size_t
I,
rowLen, /* length of segment */
colStep, /* distance between start of each segment */
colLen, /* number of periods */
szOut[NRRD_DIM_MAX];
unsigned int ai, outdim;
int map[NRRD_DIM_MAX];
const char *src;
char *dest, stmp[2][AIR_STRLEN_SMALL];
airArray *mop;
Nrrd *nin;
if (!(cnin && nout)) {
biffAddf(NRRD, "%s: got NULL pointer", me);
return 1;
}
if (nout == cnin) {
biffAddf(NRRD, "%s: nout==nin disallowed", me);
return 1;
}
if (1 == cnin->dim) {
if (0 != saxi) {
biffAddf(NRRD, "%s: slice axis must be 0, not %u, for 1-D array",
me, saxi);
return 1;
}
} else {
if (!( saxi < cnin->dim )) {
biffAddf(NRRD, "%s: slice axis %d out of bounds (0 to %d)",
me, saxi, cnin->dim-1);
return 1;
}
}
if (!( pos < cnin->axis[saxi].size )) {
biffAddf(NRRD, "%s: position %s out of bounds (0 to %s)", me,
airSprintSize_t(stmp[0], pos),
airSprintSize_t(stmp[1], cnin->axis[saxi].size-1));
return 1;
}
/* this shouldn't actually be necessary .. */
if (!nrrdElementSize(cnin)) {
biffAddf(NRRD, "%s: nrrd reports zero element size!", me);
return 1;
}
/* HEY: copy and paste from measure.c/nrrdProject */
mop = airMopNew();
if (1 == cnin->dim) {
/* There are more efficient ways of dealing with this case; this way is
easy to implement because it leaves most of the established code below
only superficially changed; uniformly replacing nin with (nin ? nin :
cnin), even if pointlessly so; this expression that can't be assigned
to a new variable because of the difference in const. */
nin = nrrdNew();
airMopAdd(mop, nin, (airMopper)nrrdNuke, airMopAlways);
if (nrrdAxesInsert(nin, cnin, 1)) {
biffAddf(NRRD, "%s: trouble inserting axis on 1-D array", me);
airMopError(mop); return 1;
}
} else {
nin = NULL;
}
/* set up control variables */
rowLen = colLen = 1;
for (ai=0; ai<(nin ? nin : cnin)->dim; ai++) {
if (ai < saxi) {
rowLen *= (nin ? nin : cnin)->axis[ai].size;
} else if (ai > saxi) {
colLen *= (nin ? nin : cnin)->axis[ai].size;
}
}
rowLen *= nrrdElementSize(nin ? nin : cnin);
colStep = rowLen*(nin ? nin : cnin)->axis[saxi].size;
outdim = (nin ? nin : cnin)->dim-1;
for (ai=0; ai<outdim; ai++) {
map[ai] = AIR_INT(ai) + (ai >= saxi);
szOut[ai] = (nin ? nin : cnin)->axis[map[ai]].size;
}
nout->blockSize = (nin ? nin : cnin)->blockSize;
if (nrrdMaybeAlloc_nva(nout, (nin ? nin : cnin)->type, outdim, szOut)) {
biffAddf(NRRD, "%s: failed to create slice", me);
airMopError(mop); return 1;
}
/* the skinny */
src = AIR_CAST(const char *, (nin ? nin : cnin)->data);
dest = AIR_CAST(char *, nout->data);
src += rowLen*pos;
for (I=0; I<colLen; I++) {
/* HEY: replace with AIR_MEMCPY() or similar, when applicable */
memcpy(dest, src, rowLen);
src += colStep;
dest += rowLen;
}
/* copy the peripheral information */
if (nrrdAxisInfoCopy(nout, (nin ? nin : cnin), map, NRRD_AXIS_INFO_NONE)) {
biffAddf(NRRD, "%s:", me);
airMopError(mop); return 1;
}
if (nrrdContentSet_va(nout, func, cnin /* hide possible axinsert*/,
"%d,%d", saxi, pos)) {
biffAddf(NRRD, "%s:", me);
airMopError(mop); return 1;
}
if (nrrdBasicInfoCopy(nout, (nin ? nin : cnin),
NRRD_BASIC_INFO_DATA_BIT
| NRRD_BASIC_INFO_TYPE_BIT
| NRRD_BASIC_INFO_BLOCKSIZE_BIT
| NRRD_BASIC_INFO_DIMENSION_BIT
| NRRD_BASIC_INFO_SPACEORIGIN_BIT
| NRRD_BASIC_INFO_CONTENT_BIT
| NRRD_BASIC_INFO_COMMENTS_BIT
| (nrrdStateKeyValuePairsPropagate
? 0
: NRRD_BASIC_INFO_KEYVALUEPAIRS_BIT))) {
biffAddf(NRRD, "%s:", me);
airMopError(mop); return 1;
}
/* translate origin if this was a spatial axis, otherwise copy */
/* note that if there is no spatial info at all, this is all harmless */
if (AIR_EXISTS((nin ? nin : cnin)->axis[saxi].spaceDirection[0])) {
nrrdSpaceVecScaleAdd2(nout->spaceOrigin,
1.0, (nin ? nin : cnin)->spaceOrigin,
AIR_CAST(double, pos),
(nin ? nin : cnin)->axis[saxi].spaceDirection);
} else {
/*
******** nrrdSplice()
**
** (opposite of nrrdSlice): replaces one slice of a nrrd with
** another nrrd. Will allocate memory for output only if nout != nin.
*/
int
nrrdSplice(Nrrd *nout, const Nrrd *nin, const Nrrd *nslice,
unsigned int axis, size_t pos) {
char me[]="nrrdSplice", func[]="splice", err[BIFF_STRLEN];
size_t
I,
rowLen, /* length of segment */
colStep, /* distance between start of each segment */
colLen; /* number of periods */
unsigned int ai;
char *src, *dest, *sliceCont;
if (!(nin && nout && nslice)) {
sprintf(err, "%s: got NULL pointer", me);
biffAdd(NRRD, err); return 1;
}
if (nout == nslice) {
sprintf(err, "%s: nout==nslice disallowed", me);
biffAdd(NRRD, err); return 1;
}
/* check that desired slice location is legit */
if (!( axis < nin->dim )) {
sprintf(err, "%s: slice axis %d out of bounds (0 to %d)",
me, axis, nin->dim-1);
biffAdd(NRRD, err); return 1;
}
if (!( pos < nin->axis[axis].size )) {
sprintf(err, "%s: position " _AIR_SIZE_T_CNV
" out of bounds (0 to " _AIR_SIZE_T_CNV ")",
me, pos, nin->axis[axis].size-1);
biffAdd(NRRD, err); return 1;
}
/* check that slice will fit in nin */
if (nrrdCheck(nslice) || nrrdCheck(nin)) {
sprintf(err, "%s: input or slice not valid nrrd", me);
biffAdd(NRRD, err); return 1;
}
if (!( nin->dim-1 == nslice->dim )) {
sprintf(err, "%s: dim of slice (%d) not one less than dim of input (%d)",
me, nslice->dim, nin->dim);
biffAdd(NRRD, err); return 1;
}
if (!( nin->type == nslice->type )) {
sprintf(err, "%s: type of slice (%s) != type of input (%s)",
me, airEnumStr(nrrdType, nslice->type),
airEnumStr(nrrdType, nin->type));
biffAdd(NRRD, err); return 1;
}
if (nrrdTypeBlock == nin->type) {
if (!( nin->blockSize == nslice->blockSize )) {
sprintf(err, "%s: input's blockSize (" _AIR_SIZE_T_CNV
") != subvolume's blockSize (" _AIR_SIZE_T_CNV ")",
me, nin->blockSize, nslice->blockSize);
biffAdd(NRRD, err); return 1;
}
}
for (ai=0; ai<nslice->dim; ai++) {
if (!( nin->axis[ai + (ai >= axis)].size == nslice->axis[ai].size )) {
sprintf(err, "%s: input's axis %d size (" _AIR_SIZE_T_CNV
") != slices axis %d size (" _AIR_SIZE_T_CNV ")",
me, ai + (ai >= axis),
nin->axis[ai + (ai >= axis)].size, ai,
nslice->axis[ai].size);
biffAdd(NRRD, err); return 1;
}
}
if (nout != nin) {
if (nrrdCopy(nout, nin)) {
sprintf(err, "%s:", me);
biffAdd(NRRD, err); return 1;
}
}
/* else we're going to splice in place */
/* the following was copied from nrrdSlice() */
/* set up control variables */
rowLen = colLen = 1;
for (ai=0; ai<nin->dim; ai++) {
if (ai < axis) {
rowLen *= nin->axis[ai].size;
} else if (ai > axis) {
colLen *= nin->axis[ai].size;
}
}
rowLen *= nrrdElementSize(nin);
colStep = rowLen*nin->axis[axis].size;
/* the skinny */
src = (char *)nout->data; /* switched src,dest from nrrdSlice() */
dest = (char *)nslice->data;
src += rowLen*pos;
for (I=0; I<colLen; I++) {
/* HEY: replace with AIR_MEMCPY() or similar, when applicable */
memcpy(src, dest, rowLen); /* switched src,dest from nrrdSlice() */
src += colStep;
dest += rowLen;
}
sliceCont = _nrrdContentGet(nslice);
if (nrrdContentSet_va(nout, func, nin, "%s,%d," _AIR_SIZE_T_CNV,
sliceCont, axis, pos)) {
sprintf(err, "%s:", me);
biffAdd(NRRD, err); free(sliceCont); return 1;
}
free(sliceCont);
/* basic info copied by nrrdCopy above */
return 0;
}
/*
******** nrrdInset()
**
** (opposite of nrrdCrop()) replace some sub-volume inside a nrrd with
** another given nrrd.
**
*/
int
nrrdInset(Nrrd *nout, const Nrrd *nin, const Nrrd *nsub, const size_t *min) {
char me[]="nrrdInset", func[] = "inset", err[BIFF_STRLEN],
buff1[NRRD_DIM_MAX*30], buff2[AIR_STRLEN_SMALL];
unsigned int ai;
size_t I,
lineSize, /* #bytes in one scanline to be copied */
typeSize, /* size of data type */
cIn[NRRD_DIM_MAX], /* coords for line start, in input */
cOut[NRRD_DIM_MAX], /* coords for line start, in output */
szIn[NRRD_DIM_MAX],
szOut[NRRD_DIM_MAX],
idxIn, idxOut, /* linear indices for input and output */
numLines; /* number of scanlines in output nrrd */
char *dataIn, *dataOut, *subCont;
/* errors */
if (!(nout && nin && nsub && min)) {
sprintf(err, "%s: got NULL pointer", me);
biffAdd(NRRD, err); return 1;
}
if (nout == nsub) {
sprintf(err, "%s: nout==nsub disallowed", me);
biffAdd(NRRD, err); return 1;
}
if (nrrdCheck(nin)) {
sprintf(err, "%s: input not valid nrrd", me);
biffAdd(NRRD, err); return 1;
}
if (nrrdCheck(nsub)) {
sprintf(err, "%s: subvolume not valid nrrd", me);
biffAdd(NRRD, err); return 1;
}
if (!( nin->dim == nsub->dim )) {
sprintf(err, "%s: input's dim (%d) != subvolume's dim (%d)",
me, nin->dim, nsub->dim);
biffAdd(NRRD, err); return 1;
}
if (!( nin->type == nsub->type )) {
sprintf(err, "%s: input's type (%s) != subvolume's type (%s)", me,
airEnumStr(nrrdType, nin->type),
airEnumStr(nrrdType, nsub->type));
biffAdd(NRRD, err); return 1;
}
if (nrrdTypeBlock == nin->type) {
if (!( nin->blockSize == nsub->blockSize )) {
sprintf(err, "%s: input's blockSize (" _AIR_SIZE_T_CNV
") != subvolume's blockSize (" _AIR_SIZE_T_CNV ")",
me, nin->blockSize, nsub->blockSize);
biffAdd(NRRD, err); return 1;
}
}
for (ai=0; ai<nin->dim; ai++) {
if (!( min[ai] + nsub->axis[ai].size - 1 <= nin->axis[ai].size - 1)) {
sprintf(err, "%s: axis %d range of inset indices [" _AIR_SIZE_T_CNV
"," _AIR_SIZE_T_CNV "] not within "
"input indices [0," _AIR_SIZE_T_CNV "]", me, ai,
min[ai], min[ai] + nsub->axis[ai].size - 1,
nin->axis[ai].size - 1);
biffAdd(NRRD, err); return 1;
}
}
if (nout != nin) {
if (nrrdCopy(nout, nin)) {
sprintf(err, "%s:", me);
biffAdd(NRRD, err); return 1;
}
}
/* else we're going to inset in place */
/* WARNING: following code copied/modified from nrrdCrop(),
so the meanings of "in"/"out", "src"/"dest" are all messed up */
nrrdAxisInfoGet_nva(nin, nrrdAxisInfoSize, szIn);
nrrdAxisInfoGet_nva(nsub, nrrdAxisInfoSize, szOut);
numLines = 1;
for (ai=1; ai<nin->dim; ai++) {
numLines *= szOut[ai];
}
lineSize = szOut[0]*nrrdElementSize(nin);
/* the skinny */
typeSize = nrrdElementSize(nin);
dataIn = (char *)nout->data;
dataOut = (char *)nsub->data;
for (ai=0; ai<NRRD_DIM_MAX; ai++) {
cOut[ai] = 0;
}
for (I=0; I<numLines; I++) {
for (ai=0; ai<nin->dim; ai++) {
cIn[ai] = cOut[ai] + min[ai];
}
NRRD_INDEX_GEN(idxOut, cOut, szOut, nin->dim);
NRRD_INDEX_GEN(idxIn, cIn, szIn, nin->dim);
memcpy(dataIn + idxIn*typeSize, dataOut + idxOut*typeSize, lineSize);
/* the lowest coordinate in cOut[] will stay zero, since we are
copying one (1-D) scanline at a time */
NRRD_COORD_INCR(cOut, szOut, nin->dim, 1);
}
/* HEY: before Teem version 2.0 figure out nrrdKind stuff here */
strcpy(buff1, "[");
for (ai=0; ai<nin->dim; ai++) {
sprintf(buff2, "%s" _AIR_SIZE_T_CNV, (ai ? "," : ""), min[ai]);
strcat(buff1, buff2);
}
strcat(buff1, "]");
subCont = _nrrdContentGet(nsub);
if (nrrdContentSet_va(nout, func, nin, "%s,%s", subCont, buff1)) {
sprintf(err, "%s:", me);
biffAdd(NRRD, err); free(subCont); return 1;
}
free(subCont);
/* basic info copied by nrrdCopy above */
return 0;
}
/*
** _nrrdApply1DSetUp()
**
** some error checking and initializing needed for 1D LUTS, regular,
** and irregular maps. The intent is that if this succeeds, then
** there is no need for any further error checking.
**
** The only thing this function DOES is allocate the output nrrd, and
** set meta information. The rest is just error checking.
**
** The given NrrdRange has to be fleshed out by the caller: it can't
** be NULL, and both range->min and range->max must exist.
*/
int
_nrrdApply1DSetUp(Nrrd *nout, const Nrrd *nin, const NrrdRange *range,
const Nrrd *nmap, int kind, int typeOut,
int rescale, int multi) {
char me[]="_nrrdApply1DSetUp", err[BIFF_STRLEN], *mapcnt;
char nounStr[][AIR_STRLEN_SMALL]={"lut",
"regular map",
"irregular map"};
char mnounStr[][AIR_STRLEN_SMALL]={"multi lut",
"multi regular map",
"multi irregular map"};
/* wishful thinking */
char verbStr[][AIR_STRLEN_SMALL]={"lut",
"rmap",
"imap"};
char mverbStr[][AIR_STRLEN_SMALL]={"mlut",
"mrmap",
"mimap"}; /* wishful thinking */
int mapAxis, copyMapAxis0=AIR_FALSE, axisMap[NRRD_DIM_MAX];
unsigned int ax, dim, entLen;
size_t size[NRRD_DIM_MAX];
double domMin, domMax;
if (nout == nin) {
sprintf(err, "%s: due to laziness, nout==nin always disallowed", me);
biffAdd(NRRD, err); return 1;
}
if (airEnumValCheck(nrrdType, typeOut)) {
sprintf(err, "%s: invalid requested output type %d", me, typeOut);
biffAdd(NRRD, err); return 1;
}
if (nrrdTypeBlock == nin->type || nrrdTypeBlock == typeOut) {
sprintf(err, "%s: input or requested output type is %s, need scalar",
me, airEnumStr(nrrdType, nrrdTypeBlock));
biffAdd(NRRD, err); return 1;
}
if (rescale && !(range
&& AIR_EXISTS(range->min)
&& AIR_EXISTS(range->max))) {
sprintf(err, "%s: want rescaling but didn't get a range, or "
"not both range->{min,max} exist", me);
biffAdd(NRRD, err); return 1;
}
if (kindLut == kind || kindRmap == kind) {
if (!multi) {
mapAxis = nmap->dim - 1;
if (!(0 == mapAxis || 1 == mapAxis)) {
sprintf(err, "%s: dimension of %s should be 1 or 2, not %d",
me, nounStr[kind], nmap->dim);
biffAdd(NRRD, err); return 1;
}
copyMapAxis0 = (1 == mapAxis);
} else {
mapAxis = nmap->dim - nin->dim - 1;
if (!(0 == mapAxis || 1 == mapAxis)) {
sprintf(err, "%s: dimension of %s should be %d or %d, not %d",
me, mnounStr[kind],
nin->dim + 1, nin->dim + 2, nmap->dim);
biffAdd(NRRD, err); return 1;
}
copyMapAxis0 = (1 == mapAxis);
/* need to make sure the relevant sizes match */
for (ax=0; ax<nin->dim; ax++) {
if (nin->axis[ax].size != nmap->axis[mapAxis + 1 + ax].size) {
sprintf(err, "%s: input and mmap don't have compatible sizes: "
"nin->axis[%d].size (" _AIR_SIZE_T_CNV ") "
"!= nmap->axis[%d].size (" _AIR_SIZE_T_CNV "): ",
me, ax, nin->axis[ax].size,
mapAxis + 1 + ax, nmap->axis[mapAxis + 1 + ax].size);
biffAdd(NRRD, err); return 1;
}
}
}
domMin = _nrrdApplyDomainMin(nmap, AIR_FALSE, mapAxis);
domMax = _nrrdApplyDomainMax(nmap, AIR_FALSE, mapAxis);
if (!( domMin < domMax )) {
sprintf(err, "%s: (axis %d) domain min (%g) not less than max (%g)", me,
mapAxis, domMin, domMax);
biffAdd(NRRD, err); return 1;
}
if (nrrdHasNonExist(nmap)) {
sprintf(err, "%s: %s nrrd has non-existent values",
me, multi ? mnounStr[kind] : nounStr[kind]);
biffAdd(NRRD, err); return 1;
}
entLen = mapAxis ? nmap->axis[0].size : 1;
} else {
if (multi) {
sprintf(err, "%s: sorry, multi irregular maps not implemented", me);
biffAdd(NRRD, err); return 1;
}
/* its an irregular map */
if (nrrd1DIrregMapCheck(nmap)) {
sprintf(err, "%s: problem with irregular map", me);
biffAdd(NRRD, err); return 1;
}
/* mapAxis has no meaning for irregular maps, but we'll pretend ... */
mapAxis = nmap->axis[0].size == 2 ? 0 : 1;
copyMapAxis0 = AIR_TRUE;
entLen = nmap->axis[0].size-1;
}
if (mapAxis + nin->dim > NRRD_DIM_MAX) {
sprintf(err, "%s: input nrrd dim %d through non-scalar %s exceeds "
"NRRD_DIM_MAX %d",
me, nin->dim,
multi ? mnounStr[kind] : nounStr[kind], NRRD_DIM_MAX);
biffAdd(NRRD, err); return 1;
}
nrrdAxisInfoGet_nva(nin, nrrdAxisInfoSize, size+mapAxis);
if (mapAxis) {
size[0] = entLen;
axisMap[0] = -1;
}
for (dim=0; dim<nin->dim; dim++) {
axisMap[dim+mapAxis] = dim;
}
/*
fprintf(stderr, "##%s: pre maybe alloc: nout->data = %p\n", me, nout->data);
for (dim=0; dim<mapAxis + nin->dim; dim++) {
fprintf(stderr, " size[%d] = %d\n", d, (int)size[d]);
}
fprintf(stderr, " nout->dim = %d; nout->type = %d = %s; sizes = %d,%d\n",
nout->dim, nout->type,
airEnumStr(nrrdType, nout->type));
fprintf(stderr, " typeOut = %d = %s\n", typeOut,
airEnumStr(nrrdType, typeOut));
*/
if (nrrdMaybeAlloc_nva(nout, typeOut, mapAxis + nin->dim, size)) {
sprintf(err, "%s: couldn't allocate output nrrd", me);
biffAdd(NRRD, err); return 1;
}
/*
fprintf(stderr, " nout->dim = %d; nout->type = %d = %s\n",
nout->dim, nout->type,
airEnumStr(nrrdType, nout->type),
nout->axis[0].size, nout->axis[1].size);
for (d=0; d<nout->dim; d++) {
fprintf(stderr, " size[%d] = %d\n", d, (int)nout->axis[d].size);
}
fprintf(stderr, "##%s: post maybe alloc: nout->data = %p\n", me, nout->data);
*/
if (nrrdAxisInfoCopy(nout, nin, axisMap, NRRD_AXIS_INFO_NONE)) {
sprintf(err, "%s: trouble copying axis info", me);
biffAdd(NRRD, err); return 1;
}
if (copyMapAxis0) {
_nrrdAxisInfoCopy(nout->axis + 0, nmap->axis + 0,
NRRD_AXIS_INFO_SIZE_BIT);
}
mapcnt = _nrrdContentGet(nmap);
if (nrrdContentSet_va(nout, multi ? mverbStr[kind] : verbStr[kind],
nin, "%s", mapcnt)) {
sprintf(err, "%s:", me);
biffAdd(NRRD, err); free(mapcnt); return 1;
}
free(mapcnt);
if (nrrdBasicInfoCopy(nout, nin,
NRRD_BASIC_INFO_DATA_BIT
| NRRD_BASIC_INFO_TYPE_BIT
| NRRD_BASIC_INFO_BLOCKSIZE_BIT
| NRRD_BASIC_INFO_DIMENSION_BIT
| NRRD_BASIC_INFO_CONTENT_BIT
| (nrrdStateKeyValuePairsPropagate
? 0
: NRRD_BASIC_INFO_KEYVALUEPAIRS_BIT))) {
sprintf(err, "%s:", me);
biffAdd(NRRD, err); return 1;
}
return 0;
}
int
nrrdProject(Nrrd *nout, const Nrrd *nin, unsigned int axis,
int measr, int type) {
char me[]="nrrdProject", func[]="project", err[BIFF_STRLEN];
int iType, oType, axmap[NRRD_DIM_MAX];
unsigned int ai, ei;
size_t iElSz, oElSz, iSize[NRRD_DIM_MAX], oSize[NRRD_DIM_MAX], linLen,
rowIdx, rowNum, colIdx, colNum, colStep;
const char *ptr, *iData;
char *oData, *line;
double axmin, axmax;
airArray *mop;
if (!(nin && nout)) {
sprintf(err, "%s: got NULL pointer", me);
biffAdd(NRRD, err); return 1;
}
if (nout == nin) {
sprintf(err, "%s: nout==nin disallowed", me);
biffAdd(NRRD, err); return 1;
}
if (nrrdTypeBlock == nin->type) {
sprintf(err, "%s: can't project nrrd type %s", me,
airEnumStr(nrrdType, nrrdTypeBlock));
biffAdd(NRRD, err); return 1;
}
if (!AIR_IN_OP(nrrdMeasureUnknown, measr, nrrdMeasureLast)) {
sprintf(err, "%s: measure %d not recognized", me, measr);
biffAdd(NRRD, err); return 1;
}
/* without this check, the loops below cause segfaults, because
nin->dim is now unsigned */
if (!( 2 <= nin->dim )) {
sprintf(err, "%s: sorry, currently need at least 2-D array to project", me);
biffAdd(NRRD, err); return 1;
}
/* HEY: at some point, as a convenience, it would be nice to handle
projecting a single 1-D scanline down into a 1-D single-sample,
even though this would clearly be a special case */
if (!( axis <= nin->dim-1 )) {
sprintf(err, "%s: axis %d not in range [0,%d]", me, axis, nin->dim-1);
biffAdd(NRRD, err); return 1;
}
if (nrrdTypeDefault != type) {
if (!( AIR_IN_OP(nrrdTypeUnknown, type, nrrdTypeLast) )) {
sprintf(err, "%s: got invalid target type %d", me, type);
biffAdd(NRRD, err); return 1;
}
}
mop = airMopNew();
iType = nin->type;
oType = (nrrdTypeDefault != type
? type
: _nrrdMeasureType(nin, measr));
iElSz = nrrdTypeSize[iType];
oElSz = nrrdTypeSize[oType];
nrrdAxisInfoGet_nva(nin, nrrdAxisInfoSize, iSize);
colNum = rowNum = 1;
for (ai=0; ai<nin->dim; ai++) {
if (ai < axis) {
colNum *= iSize[ai];
} else if (ai > axis) {
rowNum *= iSize[ai];
}
}
linLen = iSize[axis];
colStep = linLen*colNum;
for (ai=0; ai<=nin->dim-2; ai++) {
axmap[ai] = ai + (ai >= axis);
}
for (ai=0; ai<=nin->dim-2; ai++) {
oSize[ai] = iSize[axmap[ai]];
}
if (nrrdMaybeAlloc_nva(nout, oType, nin->dim-1, oSize)) {
sprintf(err, "%s: failed to create output", me);
biffAdd(NRRD, err); airMopError(mop); return 1;
}
/* allocate a scanline buffer */
if (!(line = (char*)calloc(linLen, iElSz))) {
sprintf(err, "%s: couldn't calloc(" _AIR_SIZE_T_CNV ","
_AIR_SIZE_T_CNV ") scanline buffer",
me, linLen, iElSz);
biffAdd(NRRD, err); airMopError(mop); return 1;
}
airMopAdd(mop, line, airFree, airMopAlways);
/* the skinny */
axmin = nin->axis[axis].min;
axmax = nin->axis[axis].max;
iData = (char *)nin->data;
oData = (char *)nout->data;
for (rowIdx=0; rowIdx<rowNum; rowIdx++) {
for (colIdx=0; colIdx<colNum; colIdx++) {
ptr = iData + iElSz*(colIdx + rowIdx*colStep);
for (ei=0; ei<linLen; ei++) {
memcpy(line + ei*iElSz, ptr + ei*iElSz*colNum, iElSz);
}
nrrdMeasureLine[measr](oData, oType, line, iType, linLen,
axmin, axmax);
oData += oElSz;
}
}
/* copy the peripheral information */
if (nrrdAxisInfoCopy(nout, nin, axmap, NRRD_AXIS_INFO_NONE)) {
sprintf(err, "%s:", me);
biffAdd(NRRD, err); airMopError(mop); return 1;
}
if (nrrdContentSet_va(nout, func, nin,
"%d,%s", axis, airEnumStr(nrrdMeasure, measr))) {
sprintf(err, "%s:", me);
biffAdd(NRRD, err); airMopError(mop); return 1;
}
/* this will copy the space origin over directly, which is reasonable */
if (nrrdBasicInfoCopy(nout, nin,
NRRD_BASIC_INFO_DATA_BIT
| NRRD_BASIC_INFO_TYPE_BIT
| NRRD_BASIC_INFO_BLOCKSIZE_BIT
| NRRD_BASIC_INFO_DIMENSION_BIT
| NRRD_BASIC_INFO_CONTENT_BIT
| NRRD_BASIC_INFO_COMMENTS_BIT
| (nrrdStateKeyValuePairsPropagate
? 0
: NRRD_BASIC_INFO_KEYVALUEPAIRS_BIT))) {
sprintf(err, "%s:", me);
biffAdd(NRRD, err); airMopError(mop); return 1;
}
airMopOkay(mop);
return 0;
}
/*
******** nrrdSlice()
**
** slices a nrrd along a given axis, at a given position.
**
** This is a newer version of the procedure, which is simpler, faster,
** and requires less memory overhead than the first one. It is based
** on the observation that any slice is a periodic square-wave pattern
** in the original data (viewed as a one- dimensional array). The
** characteristics of that periodic pattern are how far from the
** beginning it starts (offset), the length of the "on" part (length),
** the period (period), and the number of periods (numper).
*/
int
nrrdSlice(Nrrd *nout, const Nrrd *nin, unsigned int saxi, size_t pos)
{
char me[]="nrrdSlice", func[]="slice", err[BIFF_STRLEN];
size_t
I,
rowLen, /* length of segment */
colStep, /* distance between start of each segment */
colLen, /* number of periods */
szOut[NRRD_DIM_MAX];
unsigned int ai, outdim;
int map[NRRD_DIM_MAX];
char *src, *dest;
if (!(nin && nout))
{
sprintf(err, "%s: got NULL pointer", me);
biffAdd(NRRD, err);
return 1;
}
if (nout == nin)
{
sprintf(err, "%s: nout==nin disallowed", me);
biffAdd(NRRD, err);
return 1;
}
if (1 == nin->dim)
{
sprintf(err, "%s: can't slice a 1-D nrrd; use nrrd{I,F,D}Lookup[]", me);
biffAdd(NRRD, err);
return 1;
}
if (!( saxi < nin->dim ))
{
sprintf(err, "%s: slice axis %d out of bounds (0 to %d)",
me, saxi, nin->dim-1);
biffAdd(NRRD, err);
return 1;
}
if (!( pos < nin->axis[saxi].size ))
{
sprintf(err, "%s: position " _AIR_SIZE_T_CNV
" out of bounds (0 to " _AIR_SIZE_T_CNV ")",
me, pos, nin->axis[saxi].size-1);
biffAdd(NRRD, err);
return 1;
}
/* this shouldn't actually be necessary .. */
if (!nrrdElementSize(nin))
{
sprintf(err, "%s: nrrd reports zero element size!", me);
biffAdd(NRRD, err);
return 1;
}
/* set up control variables */
rowLen = colLen = 1;
for (ai=0; ai<nin->dim; ai++)
{
if (ai < saxi)
{
rowLen *= nin->axis[ai].size;
}
else if (ai > saxi)
{
colLen *= nin->axis[ai].size;
}
}
rowLen *= nrrdElementSize(nin);
colStep = rowLen*nin->axis[saxi].size;
outdim = nin->dim-1;
for (ai=0; ai<outdim; ai++)
{
map[ai] = ai + (ai >= saxi);
szOut[ai] = nin->axis[map[ai]].size;
}
nout->blockSize = nin->blockSize;
if (nrrdMaybeAlloc_nva(nout, nin->type, outdim, szOut))
{
sprintf(err, "%s: failed to create slice", me);
biffAdd(NRRD, err);
return 1;
}
/* the skinny */
src = (char *)nin->data;
dest = (char *)nout->data;
src += rowLen*pos;
for (I=0; I<colLen; I++)
{
/* HEY: replace with AIR_MEMMOVE() or similar, when applicable */
memmove(dest, src, rowLen);
src += colStep;
dest += rowLen;
}
/* copy the peripheral information */
if (nrrdAxisInfoCopy(nout, nin, map, NRRD_AXIS_INFO_NONE))
{
sprintf(err, "%s:", me);
biffAdd(NRRD, err);
return 1;
}
if (nrrdContentSet_va(nout, func, nin, "%d,%d", saxi, pos))
{
sprintf(err, "%s:", me);
biffAdd(NRRD, err);
return 1;
}
if (nrrdBasicInfoCopy(nout, nin,
NRRD_BASIC_INFO_DATA_BIT
| NRRD_BASIC_INFO_TYPE_BIT
| NRRD_BASIC_INFO_BLOCKSIZE_BIT
| NRRD_BASIC_INFO_DIMENSION_BIT
| NRRD_BASIC_INFO_SPACEORIGIN_BIT
| NRRD_BASIC_INFO_CONTENT_BIT
| NRRD_BASIC_INFO_COMMENTS_BIT
| (nrrdStateKeyValuePairsPropagate
? 0
: NRRD_BASIC_INFO_KEYVALUEPAIRS_BIT)))
{
sprintf(err, "%s:", me);
biffAdd(NRRD, err);
return 1;
}
/* translate origin if this was a spatial axis, otherwise copy */
/* note that if there is no spatial info at all, this is all harmless */
if (AIR_EXISTS(nin->axis[saxi].spaceDirection[0]))
{
_nrrdSpaceVecScaleAdd2(nout->spaceOrigin,
1.0, nin->spaceOrigin,
pos, nin->axis[saxi].spaceDirection);
}
else
{
_nrrdSpaceVecCopy(nout->spaceOrigin, nin->spaceOrigin);
}
return 0;
}
/*
******** nrrdArithGamma()
**
** map the values in a nrrd through a power function; essentially:
** val = pow(val, 1/gamma), but this is after the val has been normalized
** to be in the range of 0.0 to 1.0 (assuming that the given min and
** max really are the full range of the values in the nrrd). Thus,
** the given min and max values are fixed points of this
** transformation. Using a negative gamma means that after the pow()
** function has been applied, the value is inverted with respect to
** min and max (like in xv).
*/
int
nrrdArithGamma(Nrrd *nout, const Nrrd *nin,
const NrrdRange *_range, double Gamma) {
static const char me[]="nrrdArithGamma", func[]="gamma";
double val, min, max;
size_t I, num;
NrrdRange *range;
airArray *mop;
double (*lup)(const void *, size_t);
double (*ins)(void *, size_t, double);
if (!(nout && nin)) {
/* _range can be NULL */
biffAddf(NRRD, "%s: got NULL pointer", me);
return 1;
}
if (!( AIR_EXISTS(Gamma) )) {
biffAddf(NRRD, "%s: gamma doesn't exist", me);
return 1;
}
if (!( nrrdTypeBlock != nin->type && nrrdTypeBlock != nout->type )) {
biffAddf(NRRD, "%s: can't deal with %s type", me,
airEnumStr(nrrdType, nrrdTypeBlock));
return 1;
}
if (nout != nin) {
if (nrrdCopy(nout, nin)) {
biffAddf(NRRD, "%s: couldn't initialize by copy to output", me);
return 1;
}
}
mop = airMopNew();
if (_range) {
range = nrrdRangeCopy(_range);
nrrdRangeSafeSet(range, nin, nrrdBlind8BitRangeState);
} else {
range = nrrdRangeNewSet(nin, nrrdBlind8BitRangeTrue);
}
airMopAdd(mop, range, (airMopper)nrrdRangeNix, airMopAlways);
min = range->min;
max = range->max;
if (min == max) {
/* this is stupid. We want min < max to avoid making NaNs */
max += 1;
}
lup = nrrdDLookup[nin->type];
ins = nrrdDInsert[nout->type];
Gamma = 1/Gamma;
num = nrrdElementNumber(nin);
if (Gamma < 0.0) {
Gamma = -Gamma;
for (I=0; I<num; I++) {
val = lup(nin->data, I);
val = AIR_AFFINE(min, val, max, 0.0, 1.0);
val = pow(val, Gamma);
val = AIR_AFFINE(1.0, val, 0.0, min, max);
ins(nout->data, I, val);
}
} else {
for (I=0; I<num; I++) {
val = lup(nin->data, I);
val = AIR_AFFINE(min, val, max, 0.0, 1.0);
val = pow(val, Gamma);
val = AIR_AFFINE(0.0, val, 1.0, min, max);
ins(nout->data, I, val);
}
}
if (nrrdContentSet_va(nout, func, nin, "%g,%g,%g", min, max, Gamma)) {
biffAddf(NRRD, "%s:", me);
airMopError(mop); return 1;
}
if (nout != nin) {
nrrdAxisInfoCopy(nout, nin, NULL, NRRD_AXIS_INFO_NONE);
}
/* basic info handled by nrrdCopy above */
airMopOkay(mop);
return 0;
}
/*
******** nrrdHisto()
**
** makes a 1D histogram of a given size and type
**
** pre-NrrdRange policy:
** this looks at nin->min and nin->max to see if they are both non-NaN.
** If so, it uses these as the range of the histogram, otherwise it
** finds the min and max present in the volume. If nin->min and nin->max
** are being used as the histogram range, then values which fall outside
** this are ignored (they don't contribute to the histogram).
**
** post-NrrdRange policy:
*/
int
nrrdHisto(Nrrd *nout, const Nrrd *nin, const NrrdRange *_range,
const Nrrd *nwght, size_t bins, int type) {
static const char me[]="nrrdHisto", func[]="histo";
size_t I, num, idx;
airArray *mop;
NrrdRange *range;
double min, max, eps, val, count, incr, (*lup)(const void *v, size_t I);
if (!(nin && nout)) {
/* _range and nwght can be NULL */
biffAddf(NRRD, "%s: got NULL pointer", me);
return 1;
}
if (nout == nin) {
biffAddf(NRRD, "%s: nout==nin disallowed", me);
return 1;
}
if (!(bins > 0)) {
biffAddf(NRRD, "%s: bins value (" _AIR_SIZE_T_CNV ") invalid", me, bins);
return 1;
}
if (airEnumValCheck(nrrdType, type) || nrrdTypeBlock == type) {
biffAddf(NRRD, "%s: invalid nrrd type %d", me, type);
return 1;
}
if (nwght) {
if (nout==nwght) {
biffAddf(NRRD, "%s: nout==nwght disallowed", me);
return 1;
}
if (nrrdTypeBlock == nwght->type) {
biffAddf(NRRD, "%s: nwght type %s invalid", me,
airEnumStr(nrrdType, nrrdTypeBlock));
return 1;
}
if (!nrrdSameSize(nin, nwght, AIR_TRUE)) {
biffAddf(NRRD, "%s: nwght size mismatch with nin", me);
return 1;
}
lup = nrrdDLookup[nwght->type];
} else {
lup = NULL;
}
if (nrrdMaybeAlloc_va(nout, type, 1, bins)) {
biffAddf(NRRD, "%s: failed to alloc histo array (len " _AIR_SIZE_T_CNV
")", me, bins);
return 1;
}
mop = airMopNew();
/* nout->axis[0].size set */
nout->axis[0].spacing = AIR_NAN;
nout->axis[0].thickness = AIR_NAN;
if (nout && AIR_EXISTS(nout->axis[0].min) && AIR_EXISTS(nout->axis[0].max)) {
/* HEY: total hack to externally nail down min and max of histogram:
use the min and max already set on axis[0] */
/* HEY: shouldn't this blatent hack be further restricted by also
checking the existence of range->min and range->max ? */
min = nout->axis[0].min;
max = nout->axis[0].max;
} else {
if (_range) {
range = nrrdRangeCopy(_range);
nrrdRangeSafeSet(range, nin, nrrdBlind8BitRangeState);
} else {
range = nrrdRangeNewSet(nin, nrrdBlind8BitRangeState);
}
airMopAdd(mop, range, (airMopper)nrrdRangeNix, airMopAlways);
min = range->min;
max = range->max;
nout->axis[0].min = min;
nout->axis[0].max = max;
}
eps = (min == max ? 1.0 : 0.0);
nout->axis[0].center = nrrdCenterCell;
/* nout->axis[0].label set below */
/* make histogram */
num = nrrdElementNumber(nin);
for (I=0; I<num; I++) {
val = nrrdDLookup[nin->type](nin->data, I);
if (AIR_EXISTS(val)) {
if (val < min || val > max+eps) {
/* value is outside range; ignore it */
continue;
}
if (AIR_IN_CL(min, val, max)) {
idx = airIndex(min, val, max+eps, AIR_CAST(unsigned int, bins));
/*
printf("!%s: %d: index(%g, %g, %g, %d) = %d\n",
me, (int)I, min, val, max, bins, idx);
*/
/* count is a double in order to simplify clamping the
hit values to the representable range for nout->type */
count = nrrdDLookup[nout->type](nout->data, idx);
incr = nwght ? lup(nwght->data, I) : 1;
count = nrrdDClamp[nout->type](count + incr);
nrrdDInsert[nout->type](nout->data, idx, count);
}
}
}
if (nrrdContentSet_va(nout, func, nin, "%d", bins)) {
biffAddf(NRRD, "%s:", me);
airMopError(mop); return 1;
}
nout->axis[0].label = (char *)airFree(nout->axis[0].label);
nout->axis[0].label = (char *)airStrdup(nout->content);
if (!nrrdStateKindNoop) {
nout->axis[0].kind = nrrdKindDomain;
}
airMopOkay(mop);
return 0;
}
int
nrrdHistoDraw(Nrrd *nout, const Nrrd *nin,
size_t sy, int showLog, double max) {
static const char me[]="nrrdHistoDraw", func[]="dhisto";
char cmt[AIR_STRLEN_MED];
unsigned int k, sx, x, y, maxhitidx, E,
numticks, *Y, *logY, tick, *ticks;
double hits, maxhits, usemaxhits;
unsigned char *pgmData;
airArray *mop;
if (!(nin && nout && sy > 0)) {
biffAddf(NRRD, "%s: invalid args", me);
return 1;
}
if (nout == nin) {
biffAddf(NRRD, "%s: nout==nin disallowed", me);
return 1;
}
if (nrrdHistoCheck(nin)) {
biffAddf(NRRD, "%s: input nrrd not a histogram", me);
return 1;
}
sx = AIR_CAST(unsigned int, nin->axis[0].size);
nrrdBasicInfoInit(nout, NRRD_BASIC_INFO_DATA_BIT);
if (nrrdPGM(nout, sx, sy)) {
biffAddf(NRRD, "%s: failed to allocate histogram image", me);
return 1;
}
/* perhaps I should be using nrrdAxisInfoCopy */
nout->axis[0].spacing = nout->axis[1].spacing = AIR_NAN;
nout->axis[0].thickness = nout->axis[1].thickness = AIR_NAN;
nout->axis[0].min = nin->axis[0].min;
nout->axis[0].max = nin->axis[0].max;
nout->axis[0].center = nout->axis[1].center = nrrdCenterCell;
nout->axis[0].label = (char *)airStrdup(nin->axis[0].label);
nout->axis[1].label = (char *)airFree(nout->axis[1].label);
pgmData = (unsigned char *)nout->data;
maxhits = maxhitidx = 0;
for (x=0; x<sx; x++) {
hits = nrrdDLookup[nin->type](nin->data, x);
if (maxhits < hits) {
maxhits = hits;
maxhitidx = x;
}
}
if (AIR_EXISTS(max) && max > 0) {
usemaxhits = max;
} else {
usemaxhits = maxhits;
}
nout->axis[1].min = usemaxhits;
nout->axis[1].max = 0;
numticks = (unsigned int)log10(usemaxhits + 1);
mop = airMopNew();
ticks = (unsigned int*)calloc(numticks, sizeof(unsigned int));
airMopMem(mop, &ticks, airMopAlways);
Y = (unsigned int*)calloc(sx, sizeof(unsigned int));
airMopMem(mop, &Y, airMopAlways);
logY = (unsigned int*)calloc(sx, sizeof(unsigned int));
airMopMem(mop, &logY, airMopAlways);
if (!(ticks && Y && logY)) {
biffAddf(NRRD, "%s: failed to allocate temp arrays", me);
airMopError(mop); return 1;
}
for (k=0; k<numticks; k++) {
ticks[k] = airIndex(0, log10(pow(10,k+1) + 1), log10(usemaxhits+1), AIR_CAST(unsigned int, sy));
}
for (x=0; x<sx; x++) {
hits = nrrdDLookup[nin->type](nin->data, x);
Y[x] = airIndex(0, hits, usemaxhits, AIR_CAST(unsigned int, sy));
logY[x] = airIndex(0, log10(hits+1), log10(usemaxhits+1), AIR_CAST(unsigned int, sy));
/* printf("%d -> %d,%d", x, Y[x], logY[x]); */
}
for (y=0; y<sy; y++) {
tick = 0;
for (k=0; k<numticks; k++)
tick |= ticks[k] == y;
for (x=0; x<sx; x++) {
pgmData[x + sx*(sy-1-y)] =
(2 == showLog /* HACK: draw log curve, but not log tick marks */
? (y >= logY[x]
? 0 /* above log curve */
: (y >= Y[x]
? 128 /* below log curve, above normal curve */
: 255 /* below log curve, below normal curve */
)
)
: (!showLog
? (y >= Y[x] ? 0 : 255)
: (y >= logY[x] /* above log curve */
? (!tick ? 0 /* not on tick mark */
: 255) /* on tick mark */
: (y >= Y[x] /* below log curve, above normal curve */
? (!tick ? 128 /* not on tick mark */
: 0) /* on tick mark */
:255 /* below log curve, below normal curve */
)
)
)
);
}
}
E = AIR_FALSE;
sprintf(cmt, "min value: %g\n", nout->axis[0].min);
if (!E) E |= nrrdCommentAdd(nout, cmt);
sprintf(cmt, "max value: %g\n", nout->axis[0].max);
if (!E) E |= nrrdCommentAdd(nout, cmt);
sprintf(cmt, "max hits: %g, in bin %d, around value %g\n",
maxhits, maxhitidx, nrrdAxisInfoPos(nout, 0, maxhitidx));
if (!E) E |= nrrdCommentAdd(nout, cmt);
if (!E) E |= nrrdContentSet_va(nout, func, nin, "%d", sy);
if (E) {
biffAddf(NRRD, "%s:", me);
airMopError(mop); return 1;
}
/* bye */
airMopOkay(mop);
return 0;
}
/*
******** nrrdShuffle
**
** rearranges hyperslices of a nrrd along a given axis according to
** given permutation. This could be used to on a 4D array,
** representing a 3D volume of vectors, to re-order the vector
** components.
**
** the given permutation array must allocated for at least as long as
** the input nrrd along the chosen axis. perm[j] = i means that the
** value at position j in the _new_ array should come from position i
** in the _old_array. The standpoint is from the new, looking at
** where to find the values amid the old array (perm answers "what do
** I put here", not "where do I put this"). This allows multiple
** positions in the new array to copy from the same old position, and
** insures that there is an source for all positions along the new
** array.
*/
int
nrrdShuffle(Nrrd *nout, const Nrrd *nin, unsigned int axis,
const size_t *perm) {
static const char me[]="nrrdShuffle", func[]="shuffle";
char buff2[AIR_STRLEN_SMALL];
/* Sun Feb 8 13:13:58 CST 2009: There was a memory bug here caused
by using the same buff1[NRRD_DIM_MAX*30] declaration that had
worked fine for nrrdAxesPermute and nrrdReshape, but does NOT
work here because now samples along an axes are re-ordered, not
axes, so its often not allocated for long enough to hold the
string that's printed to it. Ideally there'd be another argument
that says whether to document the shuffle in the content string,
which would mean an API change. Or, we can use a secret
heuristic (or maybe later a nrrdState variable) for determining
when an axis is short enough to make documenting the shuffle
interesting. This is useful since functions like nrrdFlip()
probably do *not* need the shuffle (the sample reversal) to be
documented for long axes */
#define LONGEST_INTERESTING_AXIS 42
char buff1[LONGEST_INTERESTING_AXIS*30];
unsigned int ai, ldim, len;
size_t idxInB=0, idxOut, lineSize, numLines, size[NRRD_DIM_MAX], *lsize,
cIn[NRRD_DIM_MAX+1], cOut[NRRD_DIM_MAX+1];
char *dataIn, *dataOut;
if (!(nin && nout && perm)) {
biffAddf(NRRD, "%s: got NULL pointer", me);
return 1;
}
if (nout == nin) {
biffAddf(NRRD, "%s: nout==nin disallowed", me);
return 1;
}
if (!( axis < nin->dim )) {
biffAddf(NRRD, "%s: axis %d outside valid range [0,%d]",
me, axis, nin->dim-1);
return 1;
}
len = AIR_CAST(unsigned int, nin->axis[axis].size);
for (ai=0; ai<len; ai++) {
if (!( perm[ai] < len )) {
char stmp[AIR_STRLEN_SMALL];
biffAddf(NRRD, "%s: perm[%d] (%s) outside valid range [0,%d]", me, ai,
airSprintSize_t(stmp, perm[ai]), len-1);
return 1;
}
}
/* this shouldn't actually be necessary .. */
if (!nrrdElementSize(nin)) {
biffAddf(NRRD, "%s: nrrd reports zero element size!", me);
return 1;
}
/* set information in new volume */
nout->blockSize = nin->blockSize;
nrrdAxisInfoGet_nva(nin, nrrdAxisInfoSize, size);
if (nrrdMaybeAlloc_nva(nout, nin->type, nin->dim, size)) {
biffAddf(NRRD, "%s: failed to allocate output", me);
return 1;
}
if (nrrdAxisInfoCopy(nout, nin, NULL, NRRD_AXIS_INFO_NONE)) {
biffAddf(NRRD, "%s:", me);
return 1;
}
/* the min and max along the shuffled axis are now meaningless */
nout->axis[axis].min = nout->axis[axis].max = AIR_NAN;
/* do the safe thing first */
nout->axis[axis].kind = _nrrdKindAltered(nin->axis[axis].kind, AIR_FALSE);
/* try cleverness */
if (!nrrdStateKindNoop) {
if (0 == nrrdKindSize(nin->axis[axis].kind)
|| nrrdKindStub == nin->axis[axis].kind
|| nrrdKindScalar == nin->axis[axis].kind
|| nrrdKind2Vector == nin->axis[axis].kind
|| nrrdKind3Color == nin->axis[axis].kind
|| nrrdKind4Color == nin->axis[axis].kind
|| nrrdKind3Vector == nin->axis[axis].kind
|| nrrdKind3Gradient == nin->axis[axis].kind
|| nrrdKind3Normal == nin->axis[axis].kind
|| nrrdKind4Vector == nin->axis[axis].kind) {
/* these kinds have no intrinsic ordering */
nout->axis[axis].kind = nin->axis[axis].kind;
}
}
/* the skinny */
lineSize = 1;
for (ai=0; ai<axis; ai++) {
lineSize *= nin->axis[ai].size;
}
numLines = nrrdElementNumber(nin)/lineSize;
lineSize *= nrrdElementSize(nin);
lsize = size + axis;
ldim = nin->dim - axis;
dataIn = AIR_CAST(char *, nin->data);
dataOut = AIR_CAST(char *, nout->data);
memset(cIn, 0, sizeof(cIn));
memset(cOut, 0, sizeof(cOut));
for (idxOut=0; idxOut<numLines; idxOut++) {
memcpy(cIn, cOut, sizeof(cIn));
cIn[0] = perm[cOut[0]];
NRRD_INDEX_GEN(idxInB, cIn, lsize, ldim);
NRRD_INDEX_GEN(idxOut, cOut, lsize, ldim);
memcpy(dataOut + idxOut*lineSize, dataIn + idxInB*lineSize, lineSize);
NRRD_COORD_INCR(cOut, lsize, ldim, 0);
}
/* Set content. The LONGEST_INTERESTING_AXIS hack avoids the
previous array out-of-bounds bug */
if (len <= LONGEST_INTERESTING_AXIS) {
strcpy(buff1, "");
for (ai=0; ai<len; ai++) {
char stmp[AIR_STRLEN_SMALL];
sprintf(buff2, "%s%s", (ai ? "," : ""), airSprintSize_t(stmp, perm[ai]));
strcat(buff1, buff2);
}
if (nrrdContentSet_va(nout, func, nin, "%s", buff1)) {
biffAddf(NRRD, "%s:", me);
return 1;
}
} else {
if (nrrdContentSet_va(nout, func, nin, "")) {
biffAddf(NRRD, "%s:", me);
return 1;
}
}
if (nrrdBasicInfoCopy(nout, nin,
NRRD_BASIC_INFO_DATA_BIT
| NRRD_BASIC_INFO_TYPE_BIT
| NRRD_BASIC_INFO_BLOCKSIZE_BIT
| NRRD_BASIC_INFO_DIMENSION_BIT
| NRRD_BASIC_INFO_CONTENT_BIT
| NRRD_BASIC_INFO_COMMENTS_BIT
| (nrrdStateKeyValuePairsPropagate
? 0
: NRRD_BASIC_INFO_KEYVALUEPAIRS_BIT))) {
biffAddf(NRRD, "%s:", me);
return 1;
}
return 0;
#undef LONGEST_INTERESTING_AXIS
}
/*
******** nrrdAxesPermute
**
** changes the scanline ordering of the data in a nrrd
**
** The basic means by which data is moved around is with memcpy().
** The goal is to call memcpy() as few times as possible, on memory
** segments as large as possible. Currently, this is done by
** detecting how many of the low-index axes are left untouched by
** the permutation- this constitutes a "scanline" which can be
** copied around as a unit. For permuting the y and z axes of a
** matrix-x-y-z order matrix volume, this optimization produced a
** factor of 5 speed up (exhaustive multi-platform tests, of course).
**
** The axes[] array determines the permutation of the axes.
** axis[i] = j means: axis i in the output will be the input's axis j
** (axis[i] answers: "what do I put here", from the standpoint of the output,
** not "where do I put this", from the standpoint of the input)
*/
int
nrrdAxesPermute(Nrrd *nout, const Nrrd *nin, const unsigned int *axes) {
static const char me[]="nrrdAxesPermute", func[]="permute";
char buff1[NRRD_DIM_MAX*30], buff2[AIR_STRLEN_SMALL];
size_t idxOut, idxInA=0, /* indices for input and output scanlines */
lineSize, /* size of block of memory which can be
moved contiguously from input to output,
thought of as a "scanline" */
numLines, /* how many "scanlines" there are to permute */
szIn[NRRD_DIM_MAX], *lszIn,
szOut[NRRD_DIM_MAX], *lszOut,
cIn[NRRD_DIM_MAX],
cOut[NRRD_DIM_MAX];
char *dataIn, *dataOut;
int axmap[NRRD_DIM_MAX];
unsigned int
ai, /* running index along dimensions */
lowPax, /* lowest axis which is "p"ermutated */
ldim, /* nin->dim - lowPax */
ip[NRRD_DIM_MAX+1], /* inverse of permutation in "axes" */
laxes[NRRD_DIM_MAX+1]; /* copy of axes[], but shifted down by lowPax
elements, to remove i such that i == axes[i] */
airArray *mop;
mop = airMopNew();
if (!(nin && nout && axes)) {
biffAddf(NRRD, "%s: got NULL pointer", me);
airMopError(mop); return 1;
}
/* we don't actually need ip[], computing it is for error checking */
if (nrrdInvertPerm(ip, axes, nin->dim)) {
biffAddf(NRRD, "%s: couldn't compute axis permutation inverse", me);
airMopError(mop); return 1;
}
/* this shouldn't actually be necessary .. */
if (!nrrdElementSize(nin)) {
biffAddf(NRRD, "%s: nrrd reports zero element size!", me);
airMopError(mop); return 1;
}
for (ai=0; ai<nin->dim && axes[ai] == ai; ai++)
;
lowPax = ai;
/* allocate output by initial copy */
if (nout != nin) {
if (nrrdCopy(nout, nin)) {
biffAddf(NRRD, "%s: trouble copying input", me);
airMopError(mop); return 1;
}
dataIn = (char*)nin->data;
} else {
dataIn = (char*)calloc(nrrdElementNumber(nin), nrrdElementSize(nin));
if (!dataIn) {
biffAddf(NRRD, "%s: couldn't create local copy of data", me);
airMopError(mop); return 1;
}
airMopAdd(mop, dataIn, airFree, airMopAlways);
memcpy(dataIn, nin->data, nrrdElementNumber(nin)*nrrdElementSize(nin));
}
if (lowPax < nin->dim) {
/* if lowPax == nin->dim, then we were given the identity permutation, so
there's nothing to do other than the copy already done. Otherwise,
here we are (actually, lowPax < nin->dim-1) */
for (ai=0; ai<nin->dim; ai++) {
axmap[ai] = AIR_INT(axes[ai]);
}
nrrdAxisInfoGet_nva(nin, nrrdAxisInfoSize, szIn);
if (nrrdAxisInfoCopy(nout, nin, axmap, NRRD_AXIS_INFO_NONE)) {
biffAddf(NRRD, "%s:", me);
airMopError(mop); return 1;
}
nrrdAxisInfoGet_nva(nout, nrrdAxisInfoSize, szOut);
/* the skinny */
lineSize = 1;
for (ai=0; ai<lowPax; ai++) {
lineSize *= szIn[ai];
}
numLines = nrrdElementNumber(nin)/lineSize;
lineSize *= nrrdElementSize(nin);
lszIn = szIn + lowPax;
lszOut = szOut + lowPax;
ldim = nin->dim - lowPax;
memset(laxes, 0, sizeof(laxes));
for (ai=0; ai<ldim; ai++) {
laxes[ai] = axes[ai+lowPax]-lowPax;
}
dataOut = AIR_CAST(char *, nout->data);
memset(cIn, 0, sizeof(cIn));
memset(cOut, 0, sizeof(cOut));
for (idxOut=0; idxOut<numLines; idxOut++) {
/* in our representation of the coordinates of the start of the
scanlines that we're copying, we are not even storing all the
zeros in the coordinates prior to lowPax, and when we go to
a linear index for the memcpy(), we multiply by lineSize */
for (ai=0; ai<ldim; ai++) {
cIn[laxes[ai]] = cOut[ai];
}
NRRD_INDEX_GEN(idxInA, cIn, lszIn, ldim);
memcpy(dataOut + idxOut*lineSize, dataIn + idxInA*lineSize, lineSize);
NRRD_COORD_INCR(cOut, lszOut, ldim, 0);
}
/* set content */
strcpy(buff1, "");
for (ai=0; ai<nin->dim; ai++) {
sprintf(buff2, "%s%d", (ai ? "," : ""), axes[ai]);
strcat(buff1, buff2);
}
if (nrrdContentSet_va(nout, func, nin, "%s", buff1)) {
biffAddf(NRRD, "%s:", me);
airMopError(mop); return 1;
}
if (nout != nin) {
if (nrrdBasicInfoCopy(nout, nin,
NRRD_BASIC_INFO_DATA_BIT
| NRRD_BASIC_INFO_TYPE_BIT
| NRRD_BASIC_INFO_BLOCKSIZE_BIT
| NRRD_BASIC_INFO_DIMENSION_BIT
| NRRD_BASIC_INFO_CONTENT_BIT
| NRRD_BASIC_INFO_COMMENTS_BIT
| (nrrdStateKeyValuePairsPropagate
? 0
: NRRD_BASIC_INFO_KEYVALUEPAIRS_BIT))) {
biffAddf(NRRD, "%s:", me);
airMopError(mop); return 1;
}
}
}
airMopOkay(mop);
return 0;
}
/*
** _nrrdApply2DSetUp()
**
** some error checking and initializing needed for 2D LUTS and regular
** maps. The intent is that if this succeeds, then there is no need
** for any further error checking.
**
** The only thing this function DOES is allocate the output nrrd, and
** set meta information. The rest is just error checking.
**
** The given NrrdRange has to be fleshed out by the caller: it can't
** be NULL, and both range->min and range->max must exist.
*/
int
_nrrdApply2DSetUp(Nrrd *nout, const Nrrd *nin,
const NrrdRange *range0, const NrrdRange *range1,
const Nrrd *nmap, int kind, int typeOut,
int rescale0, int rescale1) {
char me[]="_nrrdApply2DSetUp", err[BIFF_STRLEN], *mapcnt;
char nounStr[][AIR_STRLEN_SMALL]={"2D lut",
"2D regular map"};
char verbStr[][AIR_STRLEN_SMALL]={"lut2",
"rmap2"};
int mapAxis, copyMapAxis0=AIR_FALSE, axisMap[NRRD_DIM_MAX];
unsigned int dim, entLen;
size_t size[NRRD_DIM_MAX];
double domMin, domMax;
if (nout == nin) {
sprintf(err, "%s: due to laziness, nout==nin always disallowed", me);
biffAdd(NRRD, err); return 1;
}
if (airEnumValCheck(nrrdType, typeOut)) {
sprintf(err, "%s: invalid requested output type %d", me, typeOut);
biffAdd(NRRD, err); return 1;
}
if (nrrdTypeBlock == nin->type || nrrdTypeBlock == typeOut) {
sprintf(err, "%s: input or requested output type is %s, need scalar",
me, airEnumStr(nrrdType, nrrdTypeBlock));
biffAdd(NRRD, err); return 1;
}
if (!(2 == nin->axis[0].size)) {
sprintf(err, "%s: input axis[0] must have size 2 (not "
_AIR_SIZE_T_CNV ")", me, nin->axis[0].size);
biffAdd(NRRD, err); return 1;
}
if (!(nin->dim > 1)) {
sprintf(err, "%s: input dimension must be > 1 (not %u)", me, nin->dim);
biffAdd(NRRD, err); return 1;
}
if (rescale0 && !(range0
&& AIR_EXISTS(range0->min)
&& AIR_EXISTS(range0->max))) {
sprintf(err, "%s: want axis 0 rescaling but didn't get range, or "
"not both range->{min,max} exist", me);
biffAdd(NRRD, err); return 1;
}
if (rescale1 && !(range1
&& AIR_EXISTS(range1->min)
&& AIR_EXISTS(range1->max))) {
sprintf(err, "%s: want axis 1 rescaling but didn't get range, or "
"not both range->{min,max} exist", me);
biffAdd(NRRD, err); return 1;
}
mapAxis = nmap->dim - 2;
if (!(0 == mapAxis || 1 == mapAxis)) {
sprintf(err, "%s: dimension of %s should be 2 or 3, not %d",
me, nounStr[kind], nmap->dim);
biffAdd(NRRD, err); return 1;
}
copyMapAxis0 = (1 == mapAxis);
domMin = _nrrdApplyDomainMin(nmap, AIR_FALSE, mapAxis);
domMax = _nrrdApplyDomainMax(nmap, AIR_FALSE, mapAxis);
if (!( domMin < domMax )) {
sprintf(err, "%s: (axis %d) domain min (%g) not less than max (%g)", me,
mapAxis, domMin, domMax);
biffAdd(NRRD, err); return 1;
}
domMin = _nrrdApplyDomainMin(nmap, AIR_FALSE, mapAxis+1);
domMax = _nrrdApplyDomainMax(nmap, AIR_FALSE, mapAxis+1);
if (!( domMin < domMax )) {
sprintf(err, "%s: (axis %d) domain min (%g) not less than max (%g)", me,
mapAxis+1, domMin, domMax);
biffAdd(NRRD, err); return 1;
}
if (nrrdHasNonExist(nmap)) {
sprintf(err, "%s: %s nrrd has non-existent values",
me, nounStr[kind]);
biffAdd(NRRD, err); return 1;
}
entLen = mapAxis ? nmap->axis[0].size : 1;
if (mapAxis + nin->dim - 1 > NRRD_DIM_MAX) {
sprintf(err, "%s: input nrrd dim %d through non-scalar %s exceeds "
"NRRD_DIM_MAX %d",
me, nin->dim, nounStr[kind], NRRD_DIM_MAX);
biffAdd(NRRD, err); return 1;
}
if (mapAxis) {
size[0] = entLen;
axisMap[0] = -1;
}
for (dim=1; dim<nin->dim; dim++) {
size[dim-1+mapAxis] = nin->axis[dim].size;
axisMap[dim-1+mapAxis] = dim;
}
/*
fprintf(stderr, "##%s: pre maybe alloc: nout->data = %p\n", me, nout->data);
for (dim=0; dim<mapAxis + nin->dim - 1; dim++) {
fprintf(stderr, " size[%d] = %d\n", dim, (int)size[dim]);
}
fprintf(stderr, " nout->dim = %u; nout->type = %d = %s; sizes = %u,%u\n",
nout->dim, nout->type,
airEnumStr(nrrdType, nout->type),
AIR_CAST(unsigned int, nout->axis[0].size),
AIR_CAST(unsigned int, nout->axis[1].size));
fprintf(stderr, " typeOut = %d = %s\n", typeOut,
airEnumStr(nrrdType, typeOut));
*/
if (nrrdMaybeAlloc_nva(nout, typeOut, nin->dim - 1 + mapAxis, size)) {
sprintf(err, "%s: couldn't allocate output nrrd", me);
biffAdd(NRRD, err); return 1;
}
/*
fprintf(stderr, " nout->dim = %d; nout->type = %d = %s\n",
nout->dim, nout->type,
airEnumStr(nrrdType, nout->type));
for (dim=0; dim<nout->dim; dim++) {
fprintf(stderr, " size[%d] = %d\n", dim, (int)nout->axis[dim].size);
}
fprintf(stderr, "##%s: post maybe alloc: nout->data = %p\n", me, nout->data);
*/
if (nrrdAxisInfoCopy(nout, nin, axisMap, NRRD_AXIS_INFO_NONE)) {
sprintf(err, "%s: trouble copying axis info", me);
biffAdd(NRRD, err); return 1;
}
if (copyMapAxis0) {
_nrrdAxisInfoCopy(nout->axis + 0, nmap->axis + 0,
NRRD_AXIS_INFO_SIZE_BIT);
}
mapcnt = _nrrdContentGet(nmap);
if (nrrdContentSet_va(nout, verbStr[kind], nin, "%s", mapcnt)) {
sprintf(err, "%s:", me);
biffAdd(NRRD, err); free(mapcnt); return 1;
}
free(mapcnt);
nrrdBasicInfoInit(nout, (NRRD_BASIC_INFO_DATA_BIT
| NRRD_BASIC_INFO_TYPE_BIT
| NRRD_BASIC_INFO_BLOCKSIZE_BIT
| NRRD_BASIC_INFO_DIMENSION_BIT
| NRRD_BASIC_INFO_CONTENT_BIT));
return 0;
}
/*
******** nrrdSpatialResample()
**
** general-purpose array-resampler: resamples a nrrd of any type
** (except block) and any dimension along any or all of its axes, with
** any combination of up- or down-sampling along the axes, with any
** kernel (specified by callback), with potentially a different kernel
** for each axis. Whether or not to resample along axis d is
** controlled by the non-NULL-ity of info->kernel[ai]. Where to sample
** on the axis is controlled by info->min[ai] and info->max[ai]; these
** specify a range of "positions" aka "world space" positions, as
** determined by the per-axis min and max of the input nrrd, which must
** be set for every resampled axis.
**
** we cyclically permute those axes being resampled, and never touch
** the position (in axis ordering) of axes along which we are not
** resampling. This strategy is certainly not the most intelligent
** one possible, but it does mean that the axis along which we're
** currently resampling-- the one along which we'll have to look at
** multiple adjecent samples-- is that resampling axis which is
** currently most contiguous in memory. It may make sense to precede
** the resampling with an axis permutation which bubbles all the
** resampled axes to the front (most contiguous) end of the axis list,
** and then puts them back in place afterwards, depending on the cost
** of such axis permutation overhead.
*/
int
nrrdSpatialResample(Nrrd *nout, const Nrrd *nin,
const NrrdResampleInfo *info) {
char me[]="nrrdSpatialResample", func[]="resample", err[BIFF_STRLEN];
nrrdResample_t
*array[NRRD_DIM_MAX], /* intermediate copies of the input data
undergoing resampling; we don't need a full-
fledged nrrd for these. Only about two of
these arrays will be allocated at a time;
intermediate results will be free()d when not
needed */
*_inVec, /* current input vector being resampled;
not necessarily contiguous in memory
(if strideIn != 1) */
*inVec, /* buffer for input vector; contiguous */
*_outVec; /* output vector in context of volume;
never contiguous */
double tmpF;
double ratio, /* factor by which or up or downsampled */
ratios[NRRD_DIM_MAX]; /* record of "ratio" for all resampled axes,
used to compute new spacing in output */
Nrrd *floatNin; /* if the input nrrd type is not nrrdResample_t,
then we convert it and keep it here */
unsigned int ai,
pi, /* current pass */
topLax,
permute[NRRD_DIM_MAX], /* how to permute axes of last pass to get
axes for current pass */
ax[NRRD_DIM_MAX+1][NRRD_DIM_MAX], /* axis ordering on each pass */
passes; /* # of passes needed to resample all axes */
int i, s, e,
topRax, /* the lowest index of an axis which is
resampled. If all axes are being resampled,
then this is 0. If for some reason the
"x" axis (fastest stride) is not being
resampled, but "y" is, then topRax is 1 */
botRax, /* index of highest axis being resampled */
typeIn, typeOut; /* types of input and output of resampling */
size_t sz[NRRD_DIM_MAX+1][NRRD_DIM_MAX];
/* how many samples along each
axis, changing on each pass */
/* all these variables have to do with the spacing of elements in
memory for the current pass of resampling, and they (except
strideIn) are re-set at the beginning of each pass */
nrrdResample_t
*weight; /* sample weights */
unsigned int ci[NRRD_DIM_MAX+1],
co[NRRD_DIM_MAX+1];
int
sizeIn, sizeOut, /* lengths of input and output vectors */
dotLen, /* # input samples to dot with weights to get
one output sample */
doRound, /* actually do rounding on output: we DO NOT
round when info->round but the output
type is not integral */
*index; /* dotLen*sizeOut 2D array of input indices */
size_t
I, /* swiss-army int */
strideIn, /* the stride between samples in the input
"scanline" being resampled */
strideOut, /* stride between samples in output
"scanline" from resampling */
L, LI, LO, numLines, /* top secret */
numOut; /* # of _samples_, total, in output volume;
this is for allocating the output */
airArray *mop; /* for cleaning up */
if (!(nout && nin && info)) {
sprintf(err, "%s: got NULL pointer", me);
biffAdd(NRRD, err); return 1;
}
if (nrrdBoundaryUnknown == info->boundary) {
sprintf(err, "%s: need to specify a boundary behavior", me);
biffAdd(NRRD, err); return 1;
}
typeIn = nin->type;
typeOut = nrrdTypeDefault == info->type ? typeIn : info->type;
if (_nrrdResampleCheckInfo(nin, info)) {
sprintf(err, "%s: problem with arguments", me);
biffAdd(NRRD, err); return 1;
}
_nrrdResampleComputePermute(permute, ax, sz,
&topRax, &botRax, &passes,
nin, info);
topLax = topRax ? 0 : 1;
/* not sure where else to put this:
(want to put it before 0 == passes branch)
We have to assume some centering when doing resampling, and it would
be stupid to not record it in the outgoing nrrd, since the value of
nrrdDefaultCenter could always change. */
for (ai=0; ai<nin->dim; ai++) {
if (info->kernel[ai]) {
nout->axis[ai].center = _nrrdCenter(nin->axis[ai].center);
}
}
if (0 == passes) {
/* actually, no resampling was desired. Copy input to output,
but with the clamping that we normally do at the end of resampling */
nrrdAxisInfoGet_nva(nin, nrrdAxisInfoSize, sz[0]);
if (nrrdMaybeAlloc_nva(nout, typeOut, nin->dim, sz[0])) {
sprintf(err, "%s: couldn't allocate output", me);
biffAdd(NRRD, err); return 1;
}
numOut = nrrdElementNumber(nout);
for (I=0; I<numOut; I++) {
tmpF = nrrdDLookup[nin->type](nin->data, I);
tmpF = nrrdDClamp[typeOut](tmpF);
nrrdDInsert[typeOut](nout->data, I, tmpF);
}
nrrdAxisInfoCopy(nout, nin, NULL, NRRD_AXIS_INFO_NONE);
/* HEY: need to create textual representation of resampling parameters */
if (nrrdContentSet_va(nout, func, nin, "")) {
sprintf(err, "%s:", me);
biffAdd(NRRD, err); return 1;
}
if (nrrdBasicInfoCopy(nout, nin,
NRRD_BASIC_INFO_DATA_BIT
| NRRD_BASIC_INFO_TYPE_BIT
| NRRD_BASIC_INFO_BLOCKSIZE_BIT
| NRRD_BASIC_INFO_DIMENSION_BIT
| NRRD_BASIC_INFO_CONTENT_BIT
| NRRD_BASIC_INFO_COMMENTS_BIT
| (nrrdStateKeyValuePairsPropagate
? 0
: NRRD_BASIC_INFO_KEYVALUEPAIRS_BIT))) {
sprintf(err, "%s:", me);
biffAdd(NRRD, err); return 1;
}
return 0;
}
mop = airMopNew();
/* convert input nrrd to nrrdResample_t if necessary */
if (nrrdResample_nrrdType != typeIn) {
if (nrrdConvert(floatNin = nrrdNew(), nin, nrrdResample_nrrdType)) {
sprintf(err, "%s: couldn't create float copy of input", me);
biffAdd(NRRD, err); airMopError(mop); return 1;
}
array[0] = (nrrdResample_t*)floatNin->data;
airMopAdd(mop, floatNin, (airMopper)nrrdNuke, airMopAlways);
} else {
floatNin = NULL;
array[0] = (nrrdResample_t*)nin->data;
}
/* compute strideIn; this is actually the same for every pass
because (strictly speaking) in every pass we are resampling
the same axis, and axes with lower indices are constant length */
strideIn = 1;
for (ai=0; ai<(unsigned int)topRax; ai++) { /* HEY scrutinize casts */
strideIn *= nin->axis[ai].size;
}
/*
printf("%s: strideIn = " _AIR_SIZE_T_CNV "\n", me, strideIn);
*/
/* go! */
for (pi=0; pi<passes; pi++) {
/*
printf("%s: --- pass %d --- \n", me, pi);
*/
numLines = strideOut = 1;
for (ai=0; ai<nin->dim; ai++) {
if (ai < (unsigned int)botRax) { /* HEY scrutinize cast */
strideOut *= sz[pi+1][ai];
}
if (ai != (unsigned int)topRax) { /* HEY scrutinize cast */
numLines *= sz[pi][ai];
}
}
sizeIn = sz[pi][topRax];
sizeOut = sz[pi+1][botRax];
numOut = numLines*sizeOut;
/* for the rest of the loop body, d is the original "dimension"
for the axis being resampled */
ai = ax[pi][topRax];
/*
printf("%s(%d): numOut = " _AIR_SIZE_T_CNV "\n", me, pi, numOut);
printf("%s(%d): numLines = " _AIR_SIZE_T_CNV "\n", me, pi, numLines);
printf("%s(%d): stride: In=%d, Out=%d\n", me, pi,
(int)strideIn, (int)strideOut);
printf("%s(%d): sizeIn = %d\n", me, pi, sizeIn);
printf("%s(%d): sizeOut = %d\n", me, pi, sizeOut);
*/
/* we can free the input to the previous pass
(if its not the given data) */
if (pi > 0) {
if (pi == 1) {
if (array[0] != nin->data) {
airMopSub(mop, floatNin, (airMopper)nrrdNuke);
floatNin = nrrdNuke(floatNin);
array[0] = NULL;
/*
printf("%s: pi %d: freeing array[0]\n", me, pi);
*/
}
} else {
airMopSub(mop, array[pi-1], airFree);
array[pi-1] = (nrrdResample_t*)airFree(array[pi-1]);
/*
printf("%s: pi %d: freeing array[%d]\n", me, pi, pi-1);
*/
}
}
/* allocate output volume */
array[pi+1] = (nrrdResample_t*)calloc(numOut, sizeof(nrrdResample_t));
if (!array[pi+1]) {
sprintf(err, "%s: couldn't create array of " _AIR_SIZE_T_CNV
" nrrdResample_t's for output of pass %d",
me, numOut, pi);
biffAdd(NRRD, err); airMopError(mop); return 1;
}
airMopAdd(mop, array[pi+1], airFree, airMopAlways);
/*
printf("%s: allocated array[%d]\n", me, pi+1);
*/
/* allocate contiguous input scanline buffer, we alloc one more
than needed to provide a place for the pad value. That is, in
fact, the over-riding reason to copy a scanline to a local
array: so that there is a simple consistent (non-branchy) way
to incorporate the pad values */
inVec = (nrrdResample_t *)calloc(sizeIn+1, sizeof(nrrdResample_t));
airMopAdd(mop, inVec, airFree, airMopAlways);
inVec[sizeIn] = AIR_CAST(nrrdResample_t, info->padValue);
dotLen = _nrrdResampleMakeWeightIndex(&weight, &index, &ratio,
nin, info, ai);
if (!dotLen) {
sprintf(err, "%s: trouble creating weight and index vector arrays", me);
biffAdd(NRRD, err); airMopError(mop); return 1;
}
ratios[ai] = ratio;
airMopAdd(mop, weight, airFree, airMopAlways);
airMopAdd(mop, index, airFree, airMopAlways);
/* the skinny: resample all the scanlines */
_inVec = array[pi];
_outVec = array[pi+1];
memset(ci, 0, (NRRD_DIM_MAX+1)*sizeof(int));
memset(co, 0, (NRRD_DIM_MAX+1)*sizeof(int));
for (L=0; L<numLines; L++) {
/* calculate the index to get to input and output scanlines,
according the coordinates of the start of the scanline */
NRRD_INDEX_GEN(LI, ci, sz[pi], nin->dim);
NRRD_INDEX_GEN(LO, co, sz[pi+1], nin->dim);
_inVec = array[pi] + LI;
_outVec = array[pi+1] + LO;
/* read input scanline into contiguous array */
for (i=0; i<sizeIn; i++) {
inVec[i] = _inVec[i*strideIn];
}
/* do the weighting */
for (i=0; i<sizeOut; i++) {
tmpF = 0.0;
/*
fprintf(stderr, "%s: i = %d (tmpF=0)\n", me, (int)i);
*/
for (s=0; s<dotLen; s++) {
tmpF += inVec[index[s + dotLen*i]]*weight[s + dotLen*i];
/*
fprintf(stderr, " tmpF += %g*%g == %g\n",
inVec[index[s + dotLen*i]], weight[s + dotLen*i], tmpF);
*/
}
_outVec[i*strideOut] = tmpF;
/*
fprintf(stderr, "--> out[%d] = %g\n",
i*strideOut, _outVec[i*strideOut]);
*/
}
/* update the coordinates for the scanline starts. We don't
use the usual NRRD_COORD macros because we're subject to
the unusual constraint that ci[topRax] and co[permute[topRax]]
must stay exactly zero */
e = topLax;
ci[e]++;
co[permute[e]]++;
while (L < numLines-1 && ci[e] == sz[pi][e]) {
ci[e] = co[permute[e]] = 0;
e++;
e += e == topRax;
ci[e]++;
co[permute[e]]++;
}
}
/* pass-specific clean up */
airMopSub(mop, weight, airFree);
airMopSub(mop, index, airFree);
airMopSub(mop, inVec, airFree);
weight = (nrrdResample_t*)airFree(weight);
index = (int*)airFree(index);
inVec = (nrrdResample_t*)airFree(inVec);
}
/* clean up second-to-last array and scanline buffers */
if (passes > 1) {
airMopSub(mop, array[passes-1], airFree);
array[passes-1] = (nrrdResample_t*)airFree(array[passes-1]);
/*
printf("%s: now freeing array[%d]\n", me, passes-1);
*/
} else if (array[passes-1] != nin->data) {
airMopSub(mop, floatNin, (airMopper)nrrdNuke);
floatNin = nrrdNuke(floatNin);
}
array[passes-1] = NULL;
/* create output nrrd and set axis info */
if (nrrdMaybeAlloc_nva(nout, typeOut, nin->dim, sz[passes])) {
sprintf(err, "%s: couldn't allocate final output nrrd", me);
biffAdd(NRRD, err); airMopError(mop); return 1;
}
airMopAdd(mop, nout, (airMopper)nrrdNuke, airMopOnError);
nrrdAxisInfoCopy(nout, nin, NULL,
(NRRD_AXIS_INFO_SIZE_BIT
| NRRD_AXIS_INFO_MIN_BIT
| NRRD_AXIS_INFO_MAX_BIT
| NRRD_AXIS_INFO_SPACING_BIT
| NRRD_AXIS_INFO_SPACEDIRECTION_BIT /* see below */
| NRRD_AXIS_INFO_THICKNESS_BIT
| NRRD_AXIS_INFO_KIND_BIT));
for (ai=0; ai<nin->dim; ai++) {
if (info->kernel[ai]) {
/* we do resample this axis */
nout->axis[ai].spacing = nin->axis[ai].spacing/ratios[ai];
/* no way to usefully update thickness: we could be doing blurring
but maintaining the number of samples: thickness increases, or
we could be downsampling, in which the relationship between the
sampled and the skipped regions of space becomes complicated:
no single scalar can represent it, or we could be upsampling,
in which the notion of "skip" could be rendered meaningless */
nout->axis[ai].thickness = AIR_NAN;
nout->axis[ai].min = info->min[ai];
nout->axis[ai].max = info->max[ai];
/*
HEY: this is currently a bug: all this code was written long
before there were space directions, so min/max are always
set, regardless of whethere there are incoming space directions
which then disallows output space directions on the same axes
_nrrdSpaceVecScale(nout->axis[ai].spaceDirection,
1.0/ratios[ai], nin->axis[ai].spaceDirection);
*/
nout->axis[ai].kind = _nrrdKindAltered(nin->axis[ai].kind, AIR_TRUE);
} else {
/* this axis remains untouched */
nout->axis[ai].min = nin->axis[ai].min;
nout->axis[ai].max = nin->axis[ai].max;
nout->axis[ai].spacing = nin->axis[ai].spacing;
nout->axis[ai].thickness = nin->axis[ai].thickness;
nout->axis[ai].kind = nin->axis[ai].kind;
}
}
/* HEY: need to create textual representation of resampling parameters */
if (nrrdContentSet_va(nout, func, nin, "")) {
sprintf(err, "%s:", me);
biffAdd(NRRD, err); return 1;
}
/* copy the resampling final result into the output nrrd, maybe
rounding as we go to make sure that 254.9999 is saved as 255
in uchar output, and maybe clamping as we go to insure that
integral results don't have unexpected wrap-around. */
if (info->round) {
if (nrrdTypeInt == typeOut ||
nrrdTypeUInt == typeOut ||
nrrdTypeLLong == typeOut ||
nrrdTypeULLong == typeOut) {
fprintf(stderr, "%s: WARNING: possible erroneous output with "
"rounding of %s output type due to int-based implementation "
"of rounding\n", me, airEnumStr(nrrdType, typeOut));
}
doRound = nrrdTypeIsIntegral[typeOut];
} else {
doRound = AIR_FALSE;
}
numOut = nrrdElementNumber(nout);
for (I=0; I<numOut; I++) {
tmpF = array[passes][I];
if (doRound) {
tmpF = AIR_CAST(nrrdResample_t, AIR_ROUNDUP(tmpF));
}
if (info->clamp) {
tmpF = nrrdDClamp[typeOut](tmpF);
}
nrrdDInsert[typeOut](nout->data, I, tmpF);
}
if (nrrdBasicInfoCopy(nout, nin,
NRRD_BASIC_INFO_DATA_BIT
| NRRD_BASIC_INFO_TYPE_BIT
| NRRD_BASIC_INFO_BLOCKSIZE_BIT
| NRRD_BASIC_INFO_DIMENSION_BIT
| NRRD_BASIC_INFO_CONTENT_BIT
| NRRD_BASIC_INFO_COMMENTS_BIT
| (nrrdStateKeyValuePairsPropagate
? 0
: NRRD_BASIC_INFO_KEYVALUEPAIRS_BIT))) {
sprintf(err, "%s:", me);
biffAdd(NRRD, err); return 1;
}
/* enough already */
airMopOkay(mop);
return 0;
}
/*
******** nrrdCrop()
**
** select some sub-volume inside a given nrrd, producing an output
** nrrd with the same dimensions, but with equal or smaller sizes
** along each axis.
*/
int
nrrdCrop(Nrrd *nout, const Nrrd *nin, size_t *min, size_t *max)
{
char me[]="nrrdCrop", func[] = "crop", err[BIFF_STRLEN],
buff1[NRRD_DIM_MAX*30], buff2[AIR_STRLEN_SMALL];
unsigned int ai;
size_t I,
lineSize, /* #bytes in one scanline to be copied */
typeSize, /* size of data type */
cIn[NRRD_DIM_MAX], /* coords for line start, in input */
cOut[NRRD_DIM_MAX], /* coords for line start, in output */
szIn[NRRD_DIM_MAX],
szOut[NRRD_DIM_MAX],
idxIn=0, idxOut=0, /* linear indices for input and output */
numLines; /* number of scanlines in output nrrd */
char *dataIn, *dataOut;
/* errors */
if (!(nout && nin && min && max))
{
sprintf(err, "%s: got NULL pointer", me);
biffAdd(NRRD, err);
return 1;
}
if (nout == nin)
{
sprintf(err, "%s: nout==nin disallowed", me);
biffAdd(NRRD, err);
return 1;
}
for (ai=0; ai<nin->dim; ai++)
{
if (!(min[ai] <= max[ai]))
{
sprintf(err, "%s: axis %d min (" _AIR_SIZE_T_CNV
") not <= max (" _AIR_SIZE_T_CNV ")",
me, ai, min[ai], max[ai]);
biffAdd(NRRD, err);
return 1;
}
if (!( min[ai] < nin->axis[ai].size && max[ai] < nin->axis[ai].size ))
{
sprintf(err, "%s: axis %d min (" _AIR_SIZE_T_CNV
") or max (" _AIR_SIZE_T_CNV ") out of bounds [0,"
_AIR_SIZE_T_CNV "]",
me, ai, min[ai], max[ai], nin->axis[ai].size-1);
biffAdd(NRRD, err);
return 1;
}
}
/* this shouldn't actually be necessary .. */
if (!nrrdElementSize(nin))
{
sprintf(err, "%s: nrrd reports zero element size!", me);
biffAdd(NRRD, err);
return 1;
}
/* allocate */
nrrdAxisInfoGet_nva(nin, nrrdAxisInfoSize, szIn);
numLines = 1;
for (ai=0; ai<nin->dim; ai++)
{
szOut[ai] = max[ai] - min[ai] + 1;
if (ai)
{
numLines *= szOut[ai];
}
}
nout->blockSize = nin->blockSize;
if (nrrdMaybeAlloc_nva(nout, nin->type, nin->dim, szOut))
{
sprintf(err, "%s:", me);
biffAdd(NRRD, err);
return 1;
}
lineSize = szOut[0]*nrrdElementSize(nin);
/* the skinny */
typeSize = nrrdElementSize(nin);
dataIn = (char *)nin->data;
dataOut = (char *)nout->data;
memset(cOut, 0, NRRD_DIM_MAX*sizeof(unsigned int));
/*
printf("!%s: nin->dim = %d\n", me, nin->dim);
printf("!%s: min = %d %d %d\n", me, min[0], min[1], min[2]);
printf("!%s: szIn = %d %d %d\n", me, szIn[0], szIn[1], szIn[2]);
printf("!%s: szOut = %d %d %d\n", me, szOut[0], szOut[1], szOut[2]);
printf("!%s: lineSize = %d\n", me, lineSize);
printf("!%s: typeSize = %d\n", me, typeSize);
printf("!%s: numLines = %d\n", me, (int)numLines);
*/
for (I=0; I<numLines; I++)
{
for (ai=0; ai<nin->dim; ai++)
{
cIn[ai] = cOut[ai] + min[ai];
}
NRRD_INDEX_GEN(idxOut, cOut, szOut, nin->dim);
NRRD_INDEX_GEN(idxIn, cIn, szIn, nin->dim);
/*
printf("!%s: %5d: cOut=(%3d,%3d,%3d) --> idxOut = %5d\n",
me, (int)I, cOut[0], cOut[1], cOut[2], (int)idxOut);
printf("!%s: %5d: cIn=(%3d,%3d,%3d) --> idxIn = %5d\n",
me, (int)I, cIn[0], cIn[1], cIn[2], (int)idxIn);
*/
memmove(dataOut + idxOut*typeSize, dataIn + idxIn*typeSize, lineSize);
/* the lowest coordinate in cOut[] will stay zero, since we are
copying one (1-D) scanline at a time */
NRRD_COORD_INCR(cOut, szOut, nin->dim, 1);
}
if (nrrdAxisInfoCopy(nout, nin, NULL, (NRRD_AXIS_INFO_SIZE_BIT |
NRRD_AXIS_INFO_MIN_BIT |
NRRD_AXIS_INFO_MAX_BIT )))
{
sprintf(err, "%s:", me);
biffAdd(NRRD, err);
return 1;
}
for (ai=0; ai<nin->dim; ai++)
{
nrrdAxisInfoPosRange(&(nout->axis[ai].min), &(nout->axis[ai].max),
nin, ai, min[ai], max[ai]);
/* do the safe thing first */
nout->axis[ai].kind = _nrrdKindAltered(nin->axis[ai].kind, AIR_FALSE);
/* try cleverness */
if (!nrrdStateKindNoop)
{
if (nout->axis[ai].size == nin->axis[ai].size)
{
/* we can safely copy kind; the samples didn't change */
nout->axis[ai].kind = nin->axis[ai].kind;
}
else if (nrrdKind4Color == nin->axis[ai].kind
&& 3 == szOut[ai])
{
nout->axis[ai].kind = nrrdKind3Color;
}
else if (nrrdKind4Vector == nin->axis[ai].kind
&& 3 == szOut[ai])
{
nout->axis[ai].kind = nrrdKind3Vector;
}
else if ((nrrdKind4Vector == nin->axis[ai].kind
|| nrrdKind3Vector == nin->axis[ai].kind)
&& 2 == szOut[ai])
{
nout->axis[ai].kind = nrrdKind2Vector;
}
else if (nrrdKindRGBAColor == nin->axis[ai].kind
&& 0 == min[ai]
&& 2 == max[ai])
{
nout->axis[ai].kind = nrrdKindRGBColor;
}
else if (nrrdKind2DMaskedSymMatrix == nin->axis[ai].kind
&& 1 == min[ai]
&& max[ai] == szIn[ai]-1)
{
nout->axis[ai].kind = nrrdKind2DSymMatrix;
}
else if (nrrdKind2DMaskedMatrix == nin->axis[ai].kind
&& 1 == min[ai]
&& max[ai] == szIn[ai]-1)
{
nout->axis[ai].kind = nrrdKind2DMatrix;
}
else if (nrrdKind3DMaskedSymMatrix == nin->axis[ai].kind
&& 1 == min[ai]
&& max[ai] == szIn[ai]-1)
{
nout->axis[ai].kind = nrrdKind3DSymMatrix;
}
else if (nrrdKind3DMaskedMatrix == nin->axis[ai].kind
&& 1 == min[ai]
&& max[ai] == szIn[ai]-1)
{
nout->axis[ai].kind = nrrdKind3DMatrix;
}
}
}
strcpy(buff1, "");
for (ai=0; ai<nin->dim; ai++)
{
sprintf(buff2, "%s[" _AIR_SIZE_T_CNV "," _AIR_SIZE_T_CNV "]",
(ai ? "x" : ""), min[ai], max[ai]);
strcat(buff1, buff2);
}
if (nrrdContentSet_va(nout, func, nin, "%s", buff1))
{
sprintf(err, "%s:", me);
biffAdd(NRRD, err);
return 1;
}
if (nrrdBasicInfoCopy(nout, nin,
NRRD_BASIC_INFO_DATA_BIT
| NRRD_BASIC_INFO_TYPE_BIT
| NRRD_BASIC_INFO_BLOCKSIZE_BIT
| NRRD_BASIC_INFO_DIMENSION_BIT
| NRRD_BASIC_INFO_SPACEORIGIN_BIT
| NRRD_BASIC_INFO_CONTENT_BIT
| NRRD_BASIC_INFO_COMMENTS_BIT
| (nrrdStateKeyValuePairsPropagate
? 0
: NRRD_BASIC_INFO_KEYVALUEPAIRS_BIT)))
{
sprintf(err, "%s:", me);
biffAdd(NRRD, err);
return 1;
}
/* copy origin, then shift it along the spatial axes */
_nrrdSpaceVecCopy(nout->spaceOrigin, nin->spaceOrigin);
for (ai=0; ai<nin->dim; ai++)
{
if (AIR_EXISTS(nin->axis[ai].spaceDirection[0]))
{
_nrrdSpaceVecScaleAdd2(nout->spaceOrigin,
1.0, nout->spaceOrigin,
min[ai], nin->axis[ai].spaceDirection);
}
}
return 0;
}