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unit nifti_img;
//only for Delphi - not Freepascal
//Unit for running multiple regression
interface
uses define_types,Classes,nifti_hdr,sysutils,dialogs
{$IFDEF FPC},gzio2
{$ELSE}
,gziod
{$ENDIF}
;
{$H+}
function LoadImg(lInName: string; lImgData: SingleP; lStart, lEnd,linvox_offset,lRApos,lDataType,lVolVox: integer): boolean;
function LoadImg8(lInName: string; lImgData: ByteP; lStart, lEnd,linvox_offset,lRApos,lDataType,lVolVox: integer): boolean;
implementation
uses npmform,hdr;
function LoadImg(lInName: string; lImgData: SingleP; lStart, lEnd,linvox_offset,lRApos,lDataType,lVolVox: integer): boolean;
var
lvox_offset,lInc,lFSize,lP2: integer;
lFData: file;
lImgName: string;
lByteP: ByteP;
lSmallIntP: SmallIntP;
lV,lMin,lMax: single;
begin
result := false;
if (lStart >= lEnd) or (lStart < 1) or (lEnd < 1) then begin
MainForm.NPMmsg('Error: LoadImg '+inttostr(lStart)+'>='+inttostr(lEnd)+' or zero');
exit;
end;
if Files4D(lInName) then begin
lImgName := Filename4D(lInName);
lP2 := BPP (lDataType);
if lP2 = 0 then begin
Showmessage(lImgName +' is an unsupported file type');
exit;
end;
lvox_offset := linvox_offset+ ((Vol4D(lInName)-1)* (lP2 * lVolVox));
end else begin
lImgName := lInName;
lvox_offset := linvox_offset;
end;
if UpCaseExt(lImgName) = '.HDR' then
lImgName := changefileext(lImgName,'.img');
lFSize := FSize(lImgName);
if (not GzExt(lImgName)) and (lFSize < (lEnd+ lvox_offset)) then begin
MainForm.NPMmsg('Error: LoadImg '+lImgName+' FSize = '+inttostr(lFSize)+' Expected '+inttostr(lEnd+ lvox_offset));
exit;
end;
filemode := 0;
if GzExt(lImgName) then begin
if lDataType = kDT_UNSIGNED_CHAR then begin
getmem(lByteP, (lEnd+1)-lStart);
UnGZip(lImgName,lByteP,lvox_offset+lStart-1,(lEnd+1)-lStart);
for lInc := 1 to ((lEnd+1)-lStart) do
lImgData^[lRApos+lInc-1] := lByteP^[lInc];
freemem(lByteP);
end else if (lDataType = kDT_SIGNED_SHORT) then begin
//getmem(lSmallIntP, sizeof(smallint)* ((lEnd+1)-lStart));
getmem(lByteP, ((lEnd+1)-lStart)*sizeof(smallint));
UnGZip(lImgName,lByteP,lvox_offset+((lStart-1)*sizeof(smallint)),((lEnd+1)-lStart)*sizeof(smallint));
for lInc := 1 to ((lEnd+1)-lStart) do begin
lP2 := ((lInc-1)*2)+1 ;
lImgData^[lRApos+lInc-1] := makesmallint(lByteP^[lP2],lByteP^[lP2+1]);
end;
freemem(lByteP);
end else if (lDataType = kDT_SIGNED_INT) or (lDataType = kDT_FLOAT) then begin
lByteP := ByteP(@lImgData^[lRApos]);
UnGZip(lImgName,lByteP,lvox_offset+((lStart-1)*sizeof(single)),((lEnd+1)-lStart)*sizeof(single));
(*getmem(lByteP, ((lEnd+1)-lStart)*sizeof(single));
UnGZip(lImgName,lByteP,lvox_offset+((lStart-1)*sizeof(single)),((lEnd+1)-lStart)*sizeof(single));
for lInc := 1 to ((lEnd+1)-lStart) do begin
lP2 := ((lInc-1)*4)+1 ;
lImgData^[lRApos+lInc-1] := makesingle(lByteP^[lP2],lByteP^[lP2+1],lByteP^[lP2+2],lByteP^[lP2+3]);
//lImgData^[lRApos+lInc-1] := makesingle(lByteP^[lP2+3],lByteP^[lP2+2],lByteP^[lP2+1],lByteP^[lP2]);
end;
freemem(lByteP); *)
//test range
(*lINc := 1;
lMin := lImgData^[lRApos+lInc-1];
lMax := lMin;
for lInc := 1 to ((lEnd+1)-lStart) do begin
lV := lImgData^[lRApos+lInc-1];
if lV > lMax then
lMax := lV;
if lV < lMin then
lMin := lMax;
end;
MainForm.NPMmsg(inttostr(lvox_offset)+' '+realtostr(lMin,8)+' '+realtostr(lMax,8)); *)
//end
if lDataType = kDT_SIGNED_INT then begin
for lInc := 1 to ((lEnd+1)-lStart) do
lImgData^[lRApos+lInc-1] := conv4r4i (lImgData^[lRApos+lInc-1]);
end else begin
for lInc := 1 to ((lEnd+1)-lStart) do
if specialsingle(lImgData^[lRApos+lInc-1])then
lImgData^[lRApos+lInc-1] := 0;
end;
end else begin
showmessage(lImgName + ' is an unsupported compressed data type '+inttostr(lDataType));
exit;
end;
end else begin
assignfile(lFdata,lImgName);
if lDataType = kDT_UNSIGNED_CHAR then begin
getmem(lByteP, (lEnd+1)-lStart);
reset(lFdata,1); //12/2010
seek(lFdata,lvox_offset+lStart-1);
BlockRead(lFdata, lByteP^, (lEnd+1)-lStart);
for lInc := 1 to ((lEnd+1)-lStart) do
lImgData^[lRApos+lInc-1] := lByteP^[lInc];
freemem(lByteP);
end else if (lDataType = kDT_SIGNED_SHORT) then begin
getmem(lSmallIntP, sizeof(smallint)* ((lEnd+1)-lStart));
reset(lFdata,2);
if (lvox_offset mod 2) <> 0 then begin
showmessage('Error: this software can only read headers with dataoffsets that are divisible by 4.');
end;
seek(lFdata,(lvox_offset div 2)+ (lStart-1));
BlockRead(lFdata, lSmallIntP^, (lEnd+1)-lStart);
for lInc := 1 to ((lEnd+1)-lStart) do
lImgData^[lRApos+lInc-1] := lSmallIntP^[lInc];
freemem(lSmallIntP);
end else if (lDataType = kDT_SIGNED_INT) or (lDataType = kDT_FLOAT) then begin
//next: 4 byte data
reset(lFdata,4);
if (lvox_offset mod 4) <> 0 then begin
showmessage('Error: this software can only read headers with dataoffsets that are divisible by 4.');
end;
seek(lFdata,(lvox_offset div 4)+ (lStart-1) );
BlockRead(lFdata, lImgData[lRApos], (lEnd+1)-lStart);
if lDataType = kDT_SIGNED_INT then begin
for lInc := 1 to ((lEnd+1)-lStart) do
lImgData^[lRApos+lInc-1] := conv4r4i (lImgData^[lRApos+lInc-1]);
end else begin
for lInc := 1 to ((lEnd+1)-lStart) do
if specialsingle(lImgData^[lRApos+lInc-1]) then
lImgData^[lRApos+lInc-1] := 0;
end;
end else
showmessage('Unsupported COMPRESSED data type '+inttostr(lDataType));
closefile(lFdata);
end; //not gz
result := true;
end;
(*function LoadImgx(lInName: string; lImgData: SingleP; lStart, lEnd,linvox_offset,lRApos,lDataType,lVolVox: integer): boolean;
var
lvox_offset,lInc,lFSize,lP2: integer;
lFData: file;
lImgName: string;
lByteP: ByteP;
lSmallIntP: SmallIntP;
lV,lMin,lMax: single;
begin
result := false;
if (lStart >= lEnd) or (lStart < 1) or (lEnd < 1) then begin
MainForm.NPMmsg('Error: LoadImg '+inttostr(lStart)+'>='+inttostr(lEnd)+' or zero');
exit;
end;
if Files4D(lInName) then begin
lImgName := Filename4D(lInName);
lP2 := BPP (lDataType);
if lP2 = 0 then begin
Showmessage(lImgName +' is an unsupported file type');
exit;
end;
lvox_offset := linvox_offset+ ((Vol4D(lInName)-1)* (lP2 * lVolVox));
end else begin
lImgName := lInName;
lvox_offset := linvox_offset;
end;
if UpCaseExt(lImgName) = '.HDR' then
lImgName := changefileext(lImgName,'.img');
lFSize := FSize(lImgName);
if (not GzExt(lImgName)) and (lFSize < (lEnd+ lvox_offset)) then begin
MainForm.NPMmsg('Error: LoadImg '+lImgName+' FSize = '+inttostr(lFSize)+' Expected '+inttostr(lEnd+ lvox_offset));
exit;
end;
filemode := 0;
if GzExt(lImgName) then begin
if lDataType = kDT_UNSIGNED_CHAR then begin
getmem(lByteP, (lEnd+1)-lStart);
UnGZip(lImgName,lByteP,lvox_offset+lStart-1,(lEnd+1)-lStart);
for lInc := 1 to ((lEnd+1)-lStart) do
lImgData^[lRApos+lInc-1] := lByteP^[lInc];
freemem(lByteP);
end else if (lDataType = kDT_SIGNED_SHORT) then begin
//getmem(lSmallIntP, sizeof(smallint)* ((lEnd+1)-lStart));
getmem(lByteP, ((lEnd+1)-lStart)*sizeof(smallint));
UnGZip(lImgName,lByteP,lvox_offset+((lStart-1)*sizeof(smallint)),((lEnd+1)-lStart)*sizeof(smallint));
for lInc := 1 to ((lEnd+1)-lStart) do begin
lP2 := ((lInc-1)*2)+1 ;
lImgData^[lRApos+lInc-1] := makesmallint(lByteP^[lP2],lByteP^[lP2+1]);
end;
freemem(lByteP);
end else if (lDataType = kDT_SIGNED_INT) or (lDataType = kDT_FLOAT) then begin
lByteP := ByteP(@lImgData^[lRApos]);
UnGZip(lImgName,lByteP,lvox_offset+((lStart-1)*sizeof(single)),((lEnd+1)-lStart)*sizeof(single));
{getmem(lByteP, ((lEnd+1)-lStart)*sizeof(single));
UnGZip(lImgName,lByteP,lvox_offset+((lStart-1)*sizeof(single)),((lEnd+1)-lStart)*sizeof(single));
for lInc := 1 to ((lEnd+1)-lStart) do begin
lP2 := ((lInc-1)*4)+1 ;
lImgData^[lRApos+lInc-1] := makesingle(lByteP^[lP2],lByteP^[lP2+1],lByteP^[lP2+2],lByteP^[lP2+3]);
//lImgData^[lRApos+lInc-1] := makesingle(lByteP^[lP2+3],lByteP^[lP2+2],lByteP^[lP2+1],lByteP^[lP2]);
end;
freemem(lByteP);}
//test range
{lINc := 1;
lMin := lImgData^[lRApos+lInc-1];
lMax := lMin;
for lInc := 1 to ((lEnd+1)-lStart) do begin
lV := lImgData^[lRApos+lInc-1];
if lV > lMax then
lMax := lV;
if lV < lMin then
lMin := lMax;
end;
MainForm.NPMmsg(inttostr(lvox_offset)+' '+realtostr(lMin,8)+' '+realtostr(lMax,8)); }
//end
if lDataType = kDT_SIGNED_INT then begin
for lInc := 1 to ((lEnd+1)-lStart) do
lImgData^[lRApos+lInc-1] := conv4r4i (lImgData^[lRApos+lInc-1]);
end else begin
for lInc := 1 to ((lEnd+1)-lStart) do
if specialsingle(lImgData^[lRApos+lInc-1])then
lImgData^[lRApos+lInc-1] := 0;
end;
end else begin
showmessage(lImgName + ' is an unsupported compressed data type '+inttostr(lDataType));
exit;
end;
end else begin
assignfile(lFdata,lImgName);
if lDataType = kDT_UNSIGNED_CHAR then begin
getmem(lByteP, (lEnd+1)-lStart);
reset(lFdata,1);
seek(lFdata,lvox_offset+lStart-1);
BlockRead(lFdata, lByteP^, (lEnd+1)-lStart);
for lInc := 1 to ((lEnd+1)-lStart) do
lImgData^[lRApos+lInc-1] := lByteP^[lInc];
freemem(lByteP);
end else if (lDataType = kDT_SIGNED_SHORT) then begin
getmem(lSmallIntP, sizeof(smallint)* ((lEnd+1)-lStart));
reset(lFdata,2);
if (lvox_offset mod 2) <> 0 then begin
showmessage('Error: this software can only read headers with dataoffsets that are divisible by 4.');
end;
seek(lFdata,(lvox_offset div 2)+ (lStart-1));
BlockRead(lFdata, lSmallIntP^, (lEnd+1)-lStart);
for lInc := 1 to ((lEnd+1)-lStart) do
lImgData^[lRApos+lInc-1] := lSmallIntP^[lInc];
freemem(lSmallIntP);
end else if (lDataType = kDT_SIGNED_INT) or (lDataType = kDT_FLOAT) then begin
//next: 4 byte data
reset(lFdata,4);
if (lvox_offset mod 4) <> 0 then begin
showmessage('Error: this software can only read headers with dataoffsets that are divisible by 4.');
end;
seek(lFdata,(lvox_offset div 4)+ (lStart-1) );
BlockRead(lFdata, lImgData[lRApos], (lEnd+1)-lStart);
if lDataType = kDT_SIGNED_INT then begin
for lInc := 1 to ((lEnd+1)-lStart) do
lImgData^[lRApos+lInc-1] := conv4r4i (lImgData^[lRApos+lInc-1]);
end else begin
for lInc := 1 to ((lEnd+1)-lStart) do
if specialsingle(lImgData^[lRApos+lInc-1]) then
lImgData^[lRApos+lInc-1] := 0;
end;
end else
showmessage('Unsupported COMPRESSED data type '+inttostr(lDataType));
closefile(lFdata);
end; //not gz
result := true;
end; *)
function LoadImg8(lInName: string; lImgData: ByteP; lStart, lEnd,linvox_offset,lRApos,lDataType,lVolVox: integer): boolean;
//loads BINARY data - ignore scaling: zero or not zero
var
lvox_offset,lInc,lFSize,lP2: integer;
lFData: file;
lImgName: string;
lByteP: ByteP;
lSmallIntP: SmallIntP;
lSingle: single;
begin
result := false;
if (lStart >= lEnd) or (lStart < 1) or (lEnd < 1) then begin
MainForm.NPMmsg('Error: LoadImg '+inttostr(lStart)+'>='+inttostr(lEnd)+' or zero');
exit;
end;
if Files4D(lInName) then begin
lImgName := Filename4D(lInName);
lP2 := BPP (lDataType);
if lP2 = 0 then begin
Showmessage(lImgName +' is an unsupported file type');
exit;
end;
lvox_offset := linvox_offset+ ((Vol4D(lInName)-1)* (lP2 * lVolVox));
end else begin
lImgName := lInName;
lvox_offset := linvox_offset;
end;
if UpCaseExt(lImgName) = '.HDR' then
lImgName := changefileext(lImgName,'.img');
lFSize := FSize(lImgName);
if (not GzExt(lImgName)) and (lFSize < (lEnd+ lvox_offset)) then begin
MainForm.NPMmsg('Error: LoadImg '+lImgName+' FSize = '+inttostr(lFSize)+' Expected '+inttostr(lEnd+ lvox_offset));
exit;
end;
filemode := 0;
//zero array
for lInc := 1 to ((lEnd+1)-lStart) do
lImgData^[lRApos+lInc-1] := 0;//makesingle(lByteP^[lP2],lByteP^[lP2+1],lByteP^[lP2+2],lByteP^[lP2+3]);
if GzExt(lImgName) then begin
if lDataType = kDT_UNSIGNED_CHAR then begin
getmem(lByteP, (lEnd+1)-lStart);
UnGZip(lImgName,lByteP,lvox_offset+lStart-1,(lEnd+1)-lStart);
for lInc := 1 to ((lEnd+1)-lStart) do
lImgData^[lRApos+lInc-1] := lByteP^[lInc];
freemem(lByteP);
end else if (lDataType = kDT_SIGNED_SHORT) then begin
//getmem(lSmallIntP, sizeof(smallint)* ((lEnd+1)-lStart));
getmem(lByteP, ((lEnd+1)-lStart)*sizeof(smallint));
UnGZip(lImgName,lByteP,lvox_offset+((lStart-1)*sizeof(smallint)),((lEnd+1)-lStart)*sizeof(smallint));
for lInc := 1 to ((lEnd+1)-lStart) do begin
lP2 := ((lInc-1)*2)+1 ;
lImgData^[lRApos+lInc-1] := makesmallint(lByteP^[lP2],lByteP^[lP2+1]);
end;
freemem(lByteP);
end else if (lDataType = kDT_SIGNED_INT) or (lDataType = kDT_FLOAT) then begin
getmem(lByteP, ((lEnd+1)-lStart)*sizeof(single));
UnGZip(lImgName,lByteP,lvox_offset+((lStart-1)*sizeof(single)),((lEnd+1)-lStart)*sizeof(single));
if lDataType = kDT_SIGNED_INT then begin
for lInc := 1 to ((lEnd+1)-lStart) do begin
lP2 := ((lInc-1)*4)+1 ;
lSingle := conv4r4i (makesingle(lByteP^[lP2],lByteP^[lP2+1],lByteP^[lP2+2],lByteP^[lP2+3]));
if lSingle <> 0 then
lImgData^[lRApos+lInc-1] := 1;
end;
end else begin //32 bit float
for lInc := 1 to ((lEnd+1)-lStart) do begin
lP2 := ((lInc-1)*4)+1 ;
lSingle := makesingle(lByteP^[lP2],lByteP^[lP2+1],lByteP^[lP2+2],lByteP^[lP2+3]);
if (not specialsingle(lSingle)) and (lSingle <> 0) then
lImgData^[lRApos+lInc-1] := 1;
end;
end;
freemem(lByteP);
end else begin
showmessage(lImgName + ' is an unsupported compressed data type '+inttostr(lDataType));
exit;
end;
end else begin
assignfile(lFdata,lImgName);
if lDataType = kDT_UNSIGNED_CHAR then begin
getmem(lByteP, (lEnd+1)-lStart);
reset(lFdata,1);
seek(lFdata,lvox_offset+lStart-1);
BlockRead(lFdata, lByteP^, (lEnd+1)-lStart);
for lInc := 1 to ((lEnd+1)-lStart) do
lImgData^[lRApos+lInc-1] := lByteP^[lInc];
freemem(lByteP);
end else if (lDataType = kDT_SIGNED_SHORT) then begin
getmem(lSmallIntP, sizeof(smallint)* ((lEnd+1)-lStart));
reset(lFdata,2);
if (lvox_offset mod 2) <> 0 then begin
showmessage('Error: this software can only read headers with dataoffsets that are divisible by 4.');
end;
seek(lFdata,(lvox_offset div 2)+ (lStart-1));
BlockRead(lFdata, lSmallIntP^, (lEnd+1)-lStart);
for lInc := 1 to ((lEnd+1)-lStart) do
lImgData^[lRApos+lInc-1] := lSmallIntP^[lInc];
freemem(lSmallIntP);
end else if (lDataType = kDT_SIGNED_INT) or (lDataType = kDT_FLOAT) then begin
//next: 4 byte data
reset(lFdata,4);
if (lvox_offset mod 4) <> 0 then begin
showmessage('Error: this software can only read headers with dataoffsets that are divisible by 4.');
end;
seek(lFdata,(lvox_offset div 4)+ (lStart-1) );
getmem(lByteP, ((lEnd+1)-lStart)*sizeof(single));
//fx(((lEnd+1)-lStart)*sizeof(single));
BlockRead(lFdata, lByteP^, ((lEnd+1)-lStart));
//April 2009
//UnGZip(lImgName,lByteP,lvox_offset+((lStart-1)*sizeof(single)),((lEnd+1)-lStart)*sizeof(single));
if lDataType = kDT_SIGNED_INT then begin
for lInc := 1 to ((lEnd+1)-lStart) do begin
lP2 := ((lInc-1)*4)+1 ;
lSingle := conv4r4i (makesingle(lByteP^[lP2],lByteP^[lP2+1],lByteP^[lP2+2],lByteP^[lP2+3]));
if lSingle <> 0 then
lImgData^[lRApos+lInc-1] := 1;
end;
end else begin
for lInc := 1 to ((lEnd+1)-lStart) do begin
lP2 := ((lInc-1)*4)+1 ;
lSingle := makesingle(lByteP^[lP2],lByteP^[lP2+1],lByteP^[lP2+2],lByteP^[lP2+3]);
if (not specialsingle(lSingle)) and (lSingle <> 0) then
lImgData^[lRApos+lInc-1] := 1;
end;
end;
freemem(lByteP);
end else
showmessage('Unsupported COMPRESSED data type '+inttostr(lDataType));
closefile(lFdata);
end; //not gz
result := true;
end;
end.
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