int THD_datablock_from_atr( THD_datablock *dblk, char *dirname, char *headname )
{
THD_diskptr *dkptr ;
ATR_int *atr_rank , *atr_dimen , *atr_scene , *atr_btype ;
ATR_float *atr_flt ;
ATR_string *atr_labs ;
int ii , view_type , func_type , dset_type ,
nx,ny,nz,nvox , nvals , ibr,typ ;
Boolean ok ;
char prefix[THD_MAX_NAME]="Unknown" ;
MRI_IMAGE *qim ;
int brick_ccode ;
char name[666] ;
ENTRY("THD_datablock_from_atr") ;
if( dblk == NULL || dblk->natr <= 0 ) RETURN(0) ; /* bad input */
dkptr = dblk->diskptr ;
/*-- get relevant attributes: rank, dimensions, view_type & func_type --*/
atr_rank = THD_find_int_atr( dblk , ATRNAME_DATASET_RANK ) ;
atr_dimen = THD_find_int_atr( dblk , ATRNAME_DATASET_DIMENSIONS ) ;
atr_scene = THD_find_int_atr( dblk , ATRNAME_SCENE_TYPE ) ;
/*-- missing an attribute ==> quit now --*/
if( atr_rank == NULL || atr_dimen == NULL || atr_scene == NULL ) RETURN(0) ;
/*-- load type codes from SCENE attribute --*/
STATUS("loading *_type from SCENE") ;
view_type = atr_scene->in[0] ;
func_type = atr_scene->in[1] ;
dset_type = atr_scene->in[2] ;
/*-- load other values from attributes into relevant places --*/
ok = True ;
nvox = 1 ;
STATUS("loading from RANK") ;
dkptr->rank = atr_rank->in[0] ; /* N.B.: rank isn't used much */
dkptr->nvals = dblk->nvals = nvals = atr_rank->in[1] ; /* but nvals is used */
STATUS("loading from DIMENSIONS") ;
for( ii=0 ; ii < dkptr->rank ; ii++ ){
dkptr->dimsizes[ii] = atr_dimen->in[ii] ;
ok = ( ok && dkptr->dimsizes[ii] >= 1 ) ;
nvox *= dkptr->dimsizes[ii] ;
}
#if 0
if( PRINT_TRACING ){
char str[256] ;
sprintf(str,"rank=%d nvals=%d dim[0]=%d dim[1]=%d dim[2]=%d nvox=%d",
dkptr->rank , dkptr->nvals ,
dkptr->dimsizes[0] , dkptr->dimsizes[1] , dkptr->dimsizes[2] , nvox ) ;
STATUS(str) ;
}
#endif
if( !ok || nvals < 1 ||
dkptr->rank < THD_MIN_RANK || dkptr->rank > THD_MAX_RANK ){
STATUS("bad rank!!??") ;
RETURN(0) ;
}
/*-- create the storage filenames --*/
STATUS("creating storage filenames") ;
if( headname != NULL && strchr(headname,'+') != NULL ){
FILENAME_TO_PREFIX(headname,prefix) ;
THD_init_diskptr_names( dkptr, dirname,NULL,prefix , view_type , True ) ;
} else {
if( headname != NULL ) MCW_strncpy(prefix,headname,THD_MAX_NAME) ;
THD_init_diskptr_names( dkptr, dirname,NULL,prefix , view_type , True ) ;
}
/*-- determine if the BRIK file exists --*/
STATUS("checking if .BRIK file exists") ;
brick_ccode = COMPRESS_filecode(dkptr->brick_name) ;
if (dkptr->storage_mode == STORAGE_UNDEFINED) { /* ZSS: Oct. 2011
the next line was being called all the time before */
if( brick_ccode != COMPRESS_NOFILE )
dkptr->storage_mode = STORAGE_BY_BRICK ; /* a .BRIK file */
}
/*-- if VOLUME_FILENAMES attribute exists, make it so [20 Jun 2002] --*/
if( headname != NULL && dkptr->storage_mode == STORAGE_UNDEFINED ){
atr_labs = THD_find_string_atr(dblk,"VOLUME_FILENAMES") ;
if( atr_labs != NULL ){
dkptr->storage_mode = STORAGE_BY_VOLUMES ;
dblk->malloc_type = DATABLOCK_MEM_MALLOC ;
}
}
/*-- now set the memory allocation codes, etc. --*/
dblk->brick_fac = (float *) XtMalloc( sizeof(float) * nvals ) ;
for( ibr=0 ; ibr < nvals ; ibr++ ) dblk->brick_fac[ibr] = 0.0 ;
/* scaling factors from short type to float type, if nonzero */
if( !AFNI_yesenv("AFNI_IGNORE_BRICK_FLTFAC") ){
atr_flt = THD_find_float_atr( dblk , ATRNAME_BRICK_FLTFAC ) ;
if( atr_flt != NULL ){
for( ibr=0 ; ibr < nvals && ibr < atr_flt->nfl ; ibr++ )
dblk->brick_fac[ibr] = atr_flt->fl[ibr] ;
}
}
/** Now create an empty shell of the "brick" == the data structure
that will hold all the voxel data. Note that all datablocks
will have a brick, even if they never actually contain data
themselves (are only warp-on-demand).
If the BRICK_TYPES input attribute doesn't exist, then all
sub-bricks are shorts. This makes the code work with old-style
datasets, which were always made up of shorts.
**/
atr_btype = THD_find_int_atr( dblk , ATRNAME_BRICK_TYPES ) ;
if( atr_btype == NULL ){
THD_init_datablock_brick( dblk , MRI_short , NULL ) ;
} else {
THD_init_datablock_brick( dblk , atr_btype->nin , atr_btype->in ) ;
}
if( !THD_datum_constant(dblk) ){ /* 15 Sep 2004 */
fprintf(stderr,
"\n** WARNING: File %s has mixed-type sub-bricks. ", MYHEAD ) ;
}
/* 25 April 1998: check if the byte order is stored inside */
atr_labs = THD_find_string_atr( dblk , ATRNAME_BYTEORDER ) ;
if( atr_labs != NULL && atr_labs->nch > 0 ){
if( strncmp(atr_labs->ch,LSB_FIRST_STRING,ORDER_LEN) == 0 )
dkptr->byte_order = LSB_FIRST ;
else if( strncmp(atr_labs->ch,MSB_FIRST_STRING,ORDER_LEN) == 0 )
dkptr->byte_order = MSB_FIRST ;
else
fprintf(stderr,"*** Unknown %s found in dataset %s\n",
ATRNAME_BYTEORDER , MYHEAD ) ;
} else if( !no_ordwarn &&
DBLK_BRICK_TYPE(dblk,0) != MRI_byte &&
dblk->diskptr->storage_mode == STORAGE_BY_BRICK ){ /* 20 Sep 1999 */
static int first=1 ;
if( first ){
fprintf(stderr,
"\n*** The situation below can be rectified with program '3drefit -byteorder':\n");
first = 0 ;
}
fprintf(stderr," ** Dataset %s: assuming byteorder %s\n",
MYHEAD , BYTE_ORDER_STRING(dkptr->byte_order) ) ;
}
/* if the data is not on disk, the flag remains at DATABLOCK_MEM_UNDEFINED,
otherwise the flag says how the memory for the bricks is to be created. */
if( dkptr->storage_mode == STORAGE_BY_BRICK ){
#if MMAP_THRESHOLD > 0
dblk->malloc_type = (dblk->total_bytes > MMAP_THRESHOLD)
? DATABLOCK_MEM_MMAP : DATABLOCK_MEM_MALLOC ;
DBLK_mmapfix(dblk) ; /* 18 Mar 2005 */
#else
dblk->malloc_type = DATABLOCK_MEM_MALLOC ;
#endif
/* must be malloc-ed if:
data is compressed,
data is not in native byte order, or
user explicity forbids use of mmap */
if( brick_ccode >= 0 || dkptr->byte_order != native_order || no_mmap )
dblk->malloc_type = DATABLOCK_MEM_MALLOC ;
}
/* 30 Nov 1997: create the labels for sub-bricks */
THD_init_datablock_labels( dblk ) ;
atr_labs = THD_find_string_atr( dblk , ATRNAME_BRICK_LABS ) ;
if( atr_labs != NULL && atr_labs->nch > 0 ){ /* create labels from attribute */
int ipos = -1 , ipold , ngood ;
for( ibr=0 ; ibr < nvals ; ibr++ ){ /* loop over bricks */
for( ipold = ipos++ ; /* skip to */
ipos < atr_labs->nch && atr_labs->ch[ipos] != '\0' ; /* next \0 */
ipos++ ) /* nada */ ; /* or end. */
ngood = ipos - ipold - 1 ; /* number of good chars */
if( ngood > 0 ){
XtFree(dblk->brick_lab[ibr]) ;
/* 27 Oct 2011 - increase to 64 */
if( ngood > THD_MAX_SBLABEL ) ngood = THD_MAX_SBLABEL;
dblk->brick_lab[ibr] = (char *) XtMalloc(sizeof(char)*(ngood+2)) ;
memcpy( dblk->brick_lab[ibr] , atr_labs->ch+(ipold+1) , ngood ) ;
dblk->brick_lab[ibr][ngood] = '\0' ;
}
if( ipos >= atr_labs->nch ) break ; /* nothing more to do */
} /* end of loop over sub-bricks */
}
/* create the keywords for sub-bricks */
THD_init_datablock_keywords( dblk ) ;
atr_labs = THD_find_string_atr( dblk , ATRNAME_BRICK_KEYWORDS ) ;
if( atr_labs != NULL && atr_labs->nch > 0 ){ /* create keywords from attribute */
int ipos = -1 , ipold , ngood ;
for( ibr=0 ; ibr < nvals ; ibr++ ){ /* loop over bricks */
for( ipold = ipos++ ; /* skip to */
ipos < atr_labs->nch && atr_labs->ch[ipos] != '\0' ; /* next \0 */
ipos++ ) /* nada */ ; /* or end. */
ngood = ipos - ipold - 1 ; /* number of good chars */
if( ngood > 0 ){
XtFree(dblk->brick_keywords[ibr]) ;
dblk->brick_keywords[ibr] = (char *) XtMalloc(sizeof(char)*(ngood+2)) ;
memcpy( dblk->brick_keywords[ibr] , atr_labs->ch+(ipold+1) , ngood ) ;
dblk->brick_keywords[ibr][ngood] = '\0' ;
}
if( ipos >= atr_labs->nch ) break ; /* nothing more to do */
} /* end of loop over sub-bricks */
}
/* create the auxiliary statistics stuff for each brick, if present */
atr_labs = THD_find_string_atr( dblk , "BRICK_STATSYM" ) ; /* 01 Jun 2005 */
if( atr_labs != NULL && atr_labs->nch > 0 ){
NI_str_array *sar ; int scode,np ; float parm[3] ;
sar = NI_decode_string_list( atr_labs->ch , ";" ) ;
if( sar != NULL && sar->num > 0 ){
for( ibr=0 ; ibr < nvals && ibr < sar->num ; ibr++ ){
NI_stat_decode( sar->str[ibr] , &scode , parm,parm+1,parm+2 ) ;
if( scode >= AFNI_FIRST_STATCODE && scode <= AFNI_LAST_STATCODE ){
np = NI_stat_numparam(scode) ;
THD_store_datablock_stataux( dblk , ibr,scode,np,parm ) ;
}
}
NI_delete_str_array(sar) ;
}
} else { /*--- the olde way to get ye brick stataux parameters ---*/
atr_flt = THD_find_float_atr( dblk , ATRNAME_BRICK_STATAUX ) ;
if( atr_flt != NULL && atr_flt->nfl >= 3 ){
int ipos=0 , iv,nv,jv ;
/* attribute stores all stataux stuff as follows:
sub-brick-index statcode no.-of-values value ... value
sub-brick-index statcode no.-of-values value ... value, etc. */
while( ipos <= atr_flt->nfl - 3 ){
iv = (int) ( atr_flt->fl[ipos++] ) ; /* which sub-brick */
jv = (int) ( atr_flt->fl[ipos++] ) ; /* statcode */
nv = (int) ( atr_flt->fl[ipos++] ) ; /* # of values that follow */
if( nv > atr_flt->nfl - ipos ) nv = atr_flt->nfl - ipos ;
THD_store_datablock_stataux( dblk , iv , jv , nv , atr_flt->fl + ipos ) ;
ipos += nv ;
}
}
}
#if 0
if( PRINT_TRACING ){
char str[256] ;
sprintf(str,"rank=%d nvals=%d dim[0]=%d dim[1]=%d dim[2]=%d",
dkptr->rank , dkptr->nvals ,
dkptr->dimsizes[0] , dkptr->dimsizes[1] , dkptr->dimsizes[2] ) ;
STATUS(str) ;
}
#endif
/*-- FDR curves [23 Jan 2008] --*/
for( ibr=0 ; ibr < dblk->nvals ; ibr++ ){
sprintf(name,"FDRCURVE_%06d",ibr) ;
atr_flt = THD_find_float_atr( dblk , name ) ;
if( atr_flt != NULL && atr_flt->nfl > 3 ){
int nv = atr_flt->nfl - 2 ; floatvec *fv ;
MAKE_floatvec(fv,nv) ;
fv->x0 = atr_flt->fl[0] ; fv->dx = atr_flt->fl[1] ;
memcpy( fv->ar , atr_flt->fl + 2 , sizeof(float)*nv ) ;
if( dblk->brick_fdrcurve == NULL )
dblk->brick_fdrcurve = (floatvec **)calloc(sizeof(floatvec *),dblk->nvals);
dblk->brick_fdrcurve[ibr] = fv ;
}
}
for( ibr=0 ; ibr < dblk->nvals ; ibr++ ){
sprintf(name,"MDFCURVE_%06d",ibr) ;
atr_flt = THD_find_float_atr( dblk , name ) ;
if( atr_flt != NULL && atr_flt->nfl > 3 ){
int nv = atr_flt->nfl - 2 ; floatvec *fv ;
MAKE_floatvec(fv,nv) ;
fv->x0 = atr_flt->fl[0] ; fv->dx = atr_flt->fl[1] ;
memcpy( fv->ar , atr_flt->fl + 2 , sizeof(float)*nv ) ;
if( dblk->brick_mdfcurve == NULL )
dblk->brick_mdfcurve = (floatvec **)calloc(sizeof(floatvec *),dblk->nvals);
dblk->brick_mdfcurve[ibr] = fv ;
}
}
RETURN(1) ;
}
Boolean THD_write_datablock( THD_datablock *blk , Boolean write_brick )
{
THD_diskptr *dkptr ;
Boolean good ;
int id , nx , ny , nz , nv , nxy , nxyz , ibr ;
int atrank[ATRSIZE_DATASET_RANK] , atdims[ATRSIZE_DATASET_DIMENSIONS] ;
MRI_IMAGE *im ;
int save_order ;
int64_t nb , idone ;
int do_mripurge ;
/*-- sanity checks --*/
if( ! ISVALID_DATABLOCK(blk) ) return False ;
if( DBLK_IS_MASTERED(blk) ) return False ; /* 11 Jan 1999 */
if( DBLK_IS_MINC(blk) ) WRITE_ERR("MINC with bad name extension?") ;
/* 29 Oct 2001 */
if( DBLK_IS_ANALYZE(blk) ) WRITE_ERR("ANALYZE but bad name extension?") ;
/* 27 Aug 2002 */
if( DBLK_IS_NIFTI(blk) ) WRITE_ERR("NIFTI but bad name extension?") ;
/* 28 Aug 2003 */
dkptr = blk->diskptr ;
if( ! ISVALID_DISKPTR(dkptr) ) WRITE_ERR("illegal file type") ;
if( strlen(dkptr->directory_name) == 0 ||
strlen(dkptr->header_name) == 0 ||
strlen(dkptr->filecode) == 0 )
WRITE_ERR("illegal file names stored in dataset") ;
if( dkptr->rank != 3 )
WRITE_ERR("cannot write non-3D datablock") ;
/*-- create directory if necessary --*/
if( ! THD_is_directory(dkptr->directory_name) ){
id = mkdir( dkptr->directory_name , THD_MKDIR_MODE ) ;
if( id != 0 ){
fprintf(stderr,
"\n"
"*** cannot mkdir new directory: %s\n"
" - Do you have permission to write to this disk?\n"
" - Is the disk full?\n" ,
dkptr->directory_name) ;
return False ;
}
}
/* 25 April 1998: deal with byte order issues */
if( native_order < 0 ){ /* initialization */
native_order = mri_short_order() ;
if( output_order < 0 ) THD_enviro_write_order() ;
}
if( dkptr->byte_order <= 0 ) dkptr->byte_order = native_order ;
save_order = (output_order > 0) ? output_order
: dkptr->byte_order ;
#if 0
fprintf(stderr,"THD_write_datablock: save_order=%d dkptr->byte_order=%d\n",
save_order, dkptr->byte_order ) ;
#endif
if( save_order != LSB_FIRST && save_order != MSB_FIRST )
save_order = native_order ;
if( save_order == LSB_FIRST )
THD_set_string_atr( blk , ATRNAME_BYTEORDER , LSB_FIRST_STRING ) ;
else if( save_order == MSB_FIRST )
THD_set_string_atr( blk , ATRNAME_BYTEORDER , MSB_FIRST_STRING ) ;
/*-- actually write attributes to disk --*/
good = THD_write_atr( blk ) ;
if( good == False )
WRITE_ERR(
"failure to write attributes - is disk full? do you have write permission?");
/*-- if not writing data, can exit --*/
if( write_brick == False || blk->brick == NULL ||
dkptr->storage_mode == STORAGE_UNDEFINED ) return True ;
if( dkptr->storage_mode == STORAGE_BY_VOLUMES ){ /* 20 Jun 2002 */
fprintf(stderr,"** Writing dataset by VOLUMES not yet supported.\n") ;
return False ;
}
/*-- check each brick for existence:
if none exist, cannot write, but is OK
if some but not all exist, cannot write, and is an error --*/
id = THD_count_potential_databricks( blk ) ;
if( id <= 0 ) return True ;
if( id < blk->nvals ){
ERROR_message("Write dataset error: only %d out of %d bricks in memory",
id,blk->nvals) ; return False ;
}
if( blk->malloc_type == DATABLOCK_MEM_UNDEFINED )
WRITE_ERR("undefined data exists in memory") ;
/*-- 13 Mar 2006: check for free disk space --*/
{ int mm = THD_freemegabytes( dkptr->header_name ) ;
int rr = blk->total_bytes / (1024l * 1024l) ;
if( mm >= 0 && mm <= rr )
WARNING_message("Disk space: writing file %s (%d MB),"
" but only %d free MB on disk" ,
dkptr->brick_name , rr , mm ) ;
}
/*-- write data out in whatever format is ordered --*/
nx = dkptr->dimsizes[0] ;
ny = dkptr->dimsizes[1] ; nxy = nx * ny ;
nz = dkptr->dimsizes[2] ; nxyz = nxy * nz ;
nv = dkptr->nvals ; nb = blk->total_bytes ;
switch( dkptr->storage_mode ){
default: WRITE_ERR("illegal storage_mode!") ; break ;
case STORAGE_BY_BRICK:{
FILE *far ;
Boolean purge_when_done = False , ok ;
int force_gzip=0 , csave=COMPRESS_NONE ;
/** if we have a mmap-ed file, copy into RAM (ugh) **/
if( blk->malloc_type == DATABLOCK_MEM_MMAP ){
char *bnew , *bold ;
int offset ;
bnew = (char *) malloc( (size_t)nb ) ; /* work space */
bold = DBLK_ARRAY(blk,0) ; /* start of mapped file */
if( bnew == NULL )
WRITE_ERR("cannot rewrite due to malloc failure - is memory exhausted?") ;
memcpy( bnew , bold , (size_t)nb ) ; /* make a copy, */
munmap( (void *) bold , (size_t)nb ) ; /* then unmap file */
/* fix sub-brick pointers */
offset = 0 ;
for( ibr=0 ; ibr < nv ; ibr++ ){
mri_fix_data_pointer( (void *)(bnew+offset) , DBLK_BRICK(blk,ibr) ) ;
offset += DBLK_BRICK_BYTES(blk,ibr) ;
DBLK_BRICK(blk,ibr)->fondisk = 0 ; /* 31 Jan 2007 */
}
purge_when_done = True ;
} /** fall thru to here if have a malloc-ed dataset **/
if( save_order != native_order ) purge_when_done = True ;
/** delete old file, if any **/
COMPRESS_unlink( dkptr->brick_name ) ; /* Feb 1998 */
/** create new file **/
id = strlen(dkptr->directory_name) ;
ok = ( dkptr->directory_name[id-1] == '/' ) ;
if( ok ) sprintf( dkptr->brick_name , "%s%s.%s",
dkptr->directory_name ,
dkptr->filecode , DATASET_BRICK_SUFFIX );
else sprintf( dkptr->brick_name , "%s/%s.%s",
dkptr->directory_name ,
dkptr->filecode , DATASET_BRICK_SUFFIX );
/** COMPRESS for output added Feb 1998 */
if( compress_mode == COMPRESS_NOFILE ) THD_enviro_write_compression() ;
#ifdef COMPRESS_GZIP
/*-- 02 Mar 2001: check if we will force gzip --*/
if( compress_mode == COMPRESS_NONE && AFNI_yesenv("AFNI_AUTOGZIP") ){
double entrop = ENTROPY_datablock(blk) ;
force_gzip = (entrop < 2.7) ;
#if 0
fprintf(stderr,"Entropy=%g ==> forcing write gzip on %s\n",entrop,dkptr->brick_name) ;
#endif
} else {
force_gzip = 0 ;
}
if( force_gzip ){
csave = compress_mode ; compress_mode = COMPRESS_GZIP ;
}
#endif
far = COMPRESS_fopen_write( dkptr->brick_name , compress_mode ) ;
if( far == NULL ){
if( compress_mode != COMPRESS_NONE ){
compress_mode = COMPRESS_NONE ; force_gzip = 0 ;
far = COMPRESS_fopen_write( dkptr->brick_name , compress_mode ) ;
}
}
if( far == NULL )
WRITE_ERR("cannot open output brick file - do you have write permission?") ;
/** write each brick out in a separate operation **/
idone = 0 ;
for( ibr=0 ; ibr < nv ; ibr++ ){
do_mripurge = MRI_IS_PURGED( DBLK_BRICK(blk,ibr) ) ;
if( do_mripurge ) mri_unpurge( DBLK_BRICK(blk,ibr) ) ;
if( save_order != native_order ){ /* 25 April 1998 */
switch( DBLK_BRICK_TYPE(blk,ibr) ){
default: break ;
case MRI_short:
mri_swap2( DBLK_BRICK_NVOX(blk,ibr) , DBLK_ARRAY(blk,ibr) ) ;
break ;
case MRI_complex: /* 23 Nov 1999 */
mri_swap4( 2*DBLK_BRICK_NVOX(blk,ibr), DBLK_ARRAY(blk,ibr)) ;
break ;
case MRI_float: /* 23 Nov 1999 */
case MRI_int:
mri_swap4( DBLK_BRICK_NVOX(blk,ibr) , DBLK_ARRAY(blk,ibr) ) ;
break ;
}
}
idone += fwrite( DBLK_ARRAY(blk,ibr), 1, DBLK_BRICK_BYTES(blk,ibr), far );
if( do_mripurge ){ /* 31 Jan 2007 */
if( !purge_when_done ) mri_purge( DBLK_BRICK(blk,ibr) ) ;
else mri_clear( DBLK_BRICK(blk,ibr) ) ;
}
} /* end of loop over sub-bricks */
COMPRESS_fclose(far) ;
if( purge_when_done ){
if( blk->malloc_type == DATABLOCK_MEM_MMAP ){
free( DBLK_ARRAY(blk,0) ) ;
for( ibr=0 ; ibr < nv ; ibr++ )
mri_clear_data_pointer( DBLK_BRICK(blk,ibr) ) ;
} else {
THD_purge_datablock( blk , DATABLOCK_MEM_MALLOC ) ;
}
}
if( compress_mode >= 0 || save_order != native_order ){
blk->malloc_type = DATABLOCK_MEM_MALLOC ;
}
DBLK_mmapfix(blk) ; /* 28 Mar 2005 */
if( force_gzip ) compress_mode = csave ; /* 02 Mar 2001 */
if( idone != blk->total_bytes )
WRITE_ERR("Write error in brick file: Is disk full, or write_protected?") ;
dkptr->byte_order = save_order ; /* 23 Nov 1999 */
return True ;
}
break ;
} /* end of switch over data storage mode */
return False ; /* should NEVER be reached */
}
void THD_load_nifti( THD_datablock *dblk )
{
THD_diskptr *dkptr ;
int nx,ny,nz,nxy,nxyz,nxyzv , nerr=0,ibr,nv, nslice ;
int datum, need_copy=0 ;
int scale_data=0 ;
void *ptr ;
nifti_image *nim ;
nifti_brick_list NBL ; /* holds the data read from disk */
ENTRY("THD_load_nifti") ;
/*-- open and read input [these errors should never occur] --*/
if( !ISVALID_DATABLOCK(dblk) ||
dblk->diskptr->storage_mode != STORAGE_BY_NIFTI ||
dblk->brick == NULL ) EXRETURN ;
dkptr = dblk->diskptr ;
/* purge any existing bricks [10 Mar 2014] */
STATUS("purging existing data bricks (if any)") ;
THD_purge_datablock(dblk,DATABLOCK_MEM_ANY) ;
STATUS("calling nifti_image_read_bricks") ;
NBL.nbricks = 0 ;
if( ! DBLK_IS_MASTERED(dblk) ) /* allow mastering 14 Apr 2006 [rickr] */
nim = nifti_image_read_bricks( dkptr->brick_name, 0,NULL , &NBL ) ;
else {
/* n2 10 Jul, 2015 [rickr] */
/* convert master_ival to an array of int64_t */
int64_t * i64_vals = copy_ints_as_i64(dblk->master_ival, dblk->nvals);
nim = nifti_image_read_bricks( dkptr->brick_name, dblk->nvals,
i64_vals, &NBL ) ;
}
if( nim == NULL || NBL.nbricks <= 0 ) EXRETURN ;
datum = DBLK_BRICK_TYPE(dblk,0) ; /* destination data type */
/*-- determine if we need to copy the data from the
bricks as loaded above because of a type conversion --*/
switch( nim->datatype ){
case DT_INT16:
case DT_UINT8: need_copy = (datum == MRI_float) ; break ;
case DT_FLOAT32:
case DT_COMPLEX64:
case DT_RGB24: need_copy = 0 ; break ;
case DT_INT8: /* these are the cases where AFNI can't */
case DT_UINT16: /* directly handle the NIFTI datatype, */
case DT_INT32: /* so we'll convert them to floats. */
case DT_UINT32:
case DT_FLOAT64: need_copy = 1 ; break ;
#if 0
case DT_COMPLEX128: need_copy = 1 ; break ;
#endif
}
/*-- various dimensions --*/
nx = dkptr->dimsizes[0] ;
ny = dkptr->dimsizes[1] ; nxy = nx * ny ;
nz = dkptr->dimsizes[2] ; nxyz = nxy * nz ;
nv = dkptr->nvals ; if( nv > NBL.nbricks ) nv = NBL.nbricks ;
nxyzv = nxyz * nv ; nslice = nz*nv ;
dblk->malloc_type = DATABLOCK_MEM_MALLOC ;
/*------ don't need to copy data ==> just copy pointers from NBL ------*/
if( !need_copy ){
STATUS("copying brick pointers directly") ;
for( ibr=0 ; ibr < nv ; ibr++ ){
mri_fix_data_pointer( NBL.bricks[ibr] ,DBLK_BRICK(dblk,ibr) ) ;
NBL.bricks[ibr] = NULL ; /* so it won't be deleted later */
if( DBLK_BRICK_TYPE(dblk,ibr) == MRI_float ){
STATUS("doing floatscan") ;
nerr += thd_floatscan( DBLK_BRICK_NVOX(dblk,ibr) ,
DBLK_ARRAY(dblk,ibr) ) ;
} else if( DBLK_BRICK_TYPE(dblk,ibr) == MRI_complex ){
STATUS("doing complexscan") ;
nerr += thd_complexscan( DBLK_BRICK_NVOX(dblk,ibr) ,
DBLK_ARRAY(dblk,ibr) ) ;
}
}
if( nerr > 0 ) WARNING_message("file %s: corrected %d float errors\n",
dkptr->brick_name , nerr ) ;
} else { /*---------- need to copy data ==> do some more work -----------*/
register int ii ; void *nbuf ;
STATUS("converting input bricks to floats") ;
for( ibr=0 ; ibr < nv ; ibr++ ){
if( DBLK_ARRAY(dblk,ibr) == NULL ){ /* make space */
ptr = AFMALL(void, DBLK_BRICK_BYTES(dblk,ibr) ) ; /* for this */
if( ptr == NULL ) ERROR_message("malloc fails for NIfTI sub-brick #%d",ibr) ;
mri_fix_data_pointer( ptr , DBLK_BRICK(dblk,ibr) ) ; /* sub-brick! */
}
ptr = DBLK_ARRAY(dblk,ibr) ; if( ptr == NULL ) break ; /* bad news!! */
nbuf = NBL.bricks[ibr] ; /* data as read from NIfTI file */
/* macro to convert data from type "ityp" in nbuf to float in dataset */
#undef CPF
#define CPF(ityp) do{ ityp *sar = (ityp *)nbuf ; float *far = (float *)ptr ; \
for( ii=0 ; ii < nxyz ; ii++ ) far[ii] = (float)sar[ii]; \
} while(0)
/* load from nbuf into brick array (will be float or complex) */
STATUS(" converting sub-brick") ;
switch( nim->datatype ){
case DT_UINT8: CPF(unsigned char) ; break ;
case DT_INT8: CPF(signed char) ; break ;
case DT_INT16: CPF(signed short) ; break ;
case DT_UINT16: CPF(unsigned short) ; break ;
case DT_INT32: CPF(signed int) ; break ;
case DT_UINT32: CPF(unsigned int) ; break ;
case DT_FLOAT64: /* added floatscan 2 Dec, 2014 [rickr] */
{ CPF(double) ; thd_floatscan(nxyz, (float *)ptr) ; break ; }
#if 0
case DT_COMPLEX128: break ;
#endif
}
STATUS(" free-ing NIfTI volume") ;
free(NBL.bricks[ibr]) ; NBL.bricks[ibr] = NULL ;
}
}
