GigaSampler (.GIG) files to .WAV extraction

Psychophanta · Post by **Psychophanta** » Thu Jan 15, 2004 8:55 pm

Code updated For 5.20+

Global len.l
Procedure.b CheckChunk(a.s)
  loc.l=Loc(0)
  For t.l=0 To Len(a.s)-1
    If ReadByte(0)<>PeekB(@a.s+t):FileSeek(0,loc.l):ProcedureReturn 0:EndIf
  Next
  len.l=ReadLong(0)
  ProcedureReturn 1
EndProcedure
Procedure.b CheckChunkandGotoNextChunk(a.s)
  If CheckChunk(a.s):FileSeek(0,Loc(0)+len):ProcedureReturn 1:EndIf
  ProcedureReturn 0
EndProcedure
Procedure.s parse(n.l)
  While n.l>0
    Read.s t$
    If CheckChunkandGotoNextChunk(t$)=0:ProcedureReturn t$+" not matched":EndIf
    n.l-1
  Wend
  ProcedureReturn "OK"
EndProcedure
Procedure.b MyIsFilename(a.s)
  If CheckFilename(a.s)
    For t.l=0 To Len(a.s)-1
      b.w=PeekB(@a.s+t)
      If b.w<=$1E Or b.w>=$7F:ProcedureReturn 0:EndIf
    Next
    ProcedureReturn 1
  EndIf
  ProcedureReturn 0
EndProcedure

;-INITS:
hWnd.l=OpenWindow(0,GetSystemMetrics_(#SM_CYSCREEN)/3,GetSystemMetrics_(#SM_CXSCREEN)/6,300,450,".GIG to .WAV",#PB_Window_SystemMenu)
If hWnd.l=0
  MessageBox_(hWnd,"Something fails: i can't open window","Error",#MB_ICONSTOP)
  End
EndIf

ButtonGadget(1,1,8,298,40,"Drag .GIG file")
TreeGadget(2,1,50,298,400)
DragAcceptFiles_(GadgetID(2),#True)  ;<-- this makes accept drag'n'drop on it
Structure PCMsample
  name.s
  fmt_chunk.l;<-location to "fmt " chunk inside .gig file
  datachunk.l;<-location to "data" chunk inside .gig file
EndStructure
Structure gigsample
  group.s
  name.s
  comment.s[4]
EndStructure
NewList s.PCMsample()
;-MAIN:
Repeat
  EventID.l=WaitWindowEvent()
  Gosub Interact
Until EventID=#PB_Event_CloseWindow
End
;-Interacting:
Interact:
If EventID.l=#WM_DROPFILES ;<---- When some file or folder was dropped to main window
  dropped.l=EventwParam()  ;<--retrieves the handle to structure for dropped file.
  GetCursorPos_(@coord.POINT)
  bufferNeeded=DragQueryFile_(dropped.l,0,0,0)  ;bufferNeeded = space in bytes in mem for to store first dropped complete filename (with path)
  buffer$=Space(bufferNeeded) ;fill space characters.
  DragQueryFile_(dropped.l,0,buffer$,bufferNeeded+1) ;now we have the string of file including complete path (in buffer$).
  DragFinish_(dropped.l)
  path$=GetPathPart(buffer$)
  nombre$=GetFilePart(buffer$)
  If buffer$<>""
    If ReadFile(0,buffer$)=0
      SetGadgetText(1,"can't open file "+nombre$):Return
    EndIf
    o.gigsample
    ClearList(s.PCMsample())
    Gosub parse
    CloseFile(0)
  EndIf
ElseIf EventID=#PB_Event_Gadget
  If EventGadget()=1 And ListSize(s.PCMsample());<-button pressed
    If ReadFile(0,buffer$)=0
      SetGadgetText(1,"can't open file"+Chr(10)+nombre$):Return
    EndIf
    While MyIsFilename(o.gigsample\name)=0
      o.gigsample\name=InputRequester("Not a valid name","Input new name:",o.gigsample\name)
    Wend
    If FileSize(path$+o.gigsample\name)<>-1;<-if already exists
      If MessageRequester("this directory already exists","add here?",#PB_MessageRequester_YesNo)=#IDNO:CloseFile(0):Return:EndIf
    ElseIf CreateDirectory(path$+o.gigsample\name)=0
      MessageRequester("can't create folder","can't create folder"):CloseFile(0):Return
    EndIf
    ForEach s.PCMsample()
      While MyIsFilename(s.PCMsample()\name)=0
        s.PCMsample()\name=InputRequester("Not a valid name","Input new name:",s.PCMsample()\name)
      Wend
      If FileSize(path$+o.gigsample\name+"\"+s.PCMsample()\name+".wav")<>-1;<-if already exists
        s.PCMsample()\name+"_"
      EndIf
      If CreateFile(1,path$+o.gigsample\name+"\"+s.PCMsample()\name+".wav")=0
        MessageRequester("can't create file","can't create file"):CloseFile(0):Return
      EndIf
      WriteLong(0,$46464952);<-"RIFF"
      WriteLong(0,$00000000);<-file lenght-8
      WriteLong(0,$45564157);<-"WAVE"      
      FileSeek(0,s.PCMsample()\fmt_chunk+4):fmt_len.l=ReadLong(0)+8
      FileSeek(0,s.PCMsample()\datachunk+4):datalen.l=ReadLong(0)+8
      *b0=ReAllocateMemory(0,fmt_len.l)
      *b1=ReAllocateMemory(1,datalen.l)
      If *b0=0 Or *b1=0:CloseFile(1):CloseFile(0):Return:EndIf
      FileSeek(0,s.PCMsample()\fmt_chunk):ReadData(0,*b0,fmt_len.l)
      FileSeek(1,12):WriteData(1,*b0,fmt_len.l)
      FileSeek(0,s.PCMsample()\datachunk):ReadData(0,*b1,datalen.l)
      WriteData(1,*b1,datalen.l)
      FileSeek(1,4):WriteLong(1,Lof(1)-8)
      CloseFile(1)
    Next
    CloseFile(0)
  EndIf
EndIf
Return

;-SUBROUTINES:
parse:
Restore inicio
Read.s test$;<-"RIFF"
If CheckChunkandGotoNextChunk(test$)=0:SetGadgetText(1,test$+" not matched"):Return:EndIf
If Eof(0)=0:SetGadgetText(1,"wrong chunk lengh: "+test$):Return:EndIf
FileSeek(0,8)
Read.s test$;<-"DLS LIST"
If CheckChunkandGotoNextChunk(test$)=0:FileSeek(0,8):Goto parsecolh:EndIf
p.s=parse(3):If p.s<>"OK":SetGadgetText(1,p.s):Return:EndIf;<-parse "vers","cohl","dlid"
Read.s test$;<-"LIST"
If CheckChunk(test$)=0:SetGadgetText(1,test$+" not matched"):Return:EndIf
pos.l=Loc(0)+len.l;<-guardar esta posiciÃ³n, que apunta a "LIST"
Read.s test$;<-"linsLIST"
If CheckChunk(test$)=0:SetGadgetText(1,test$+" not matched"):Return:EndIf;<-ignore "linsLIST"
Read.s test$;<-"ins LIST"
If CheckChunk(test$)=0:SetGadgetText(1,test$+" not matched"):Return:EndIf;<-ignore "ins LIST"
Read.s test$;<-"INFOINAM"
If CheckChunk(test$)=0:SetGadgetText(1,test$+" not matched"):Return:EndIf
o.gigsample\name=RTrim(ReadString(0))
FileSeek(0,pos.l);<- go to "LIST" chunk
Read.s test$;<-"LIST"
If CheckChunk(test$)=0:SetGadgetText(1,test$+" not matched"):Return:EndIf
pos.l=Loc(0)+len.l;<-guardar esta posiciÃ³n que apunta a "ptbl"
Read.s test$;<-"3griLIST"
If CheckChunk(test$)=0:SetGadgetText(1,test$+" not matched"):Return:EndIf;<-ignore "3griLIST"
Read.s test$;<-"3gnl3gnm"
If CheckChunk(test$)=0:SetGadgetText(1,test$+" not matched"):Return:EndIf
o.gigsample\group=RTrim(ReadString(0))
FileSeek(0,pos.l);<-go to "ptbl" chunk
Read.s test$;<-"ptbl"
While ReadByte(0)=0:Wend:FileSeek(0,Loc(0)-1)
If CheckChunkandGotoNextChunk(test$)=0:SetGadgetText(1,test$+" not matched"):Return:EndIf
Read.s test$;<-"LIST" <- contains the size of entire samples chunk
If CheckChunk(test$)=0:SetGadgetText(1,test$+" not matched"):Return:EndIf;<-ignore it
Read.s test$;<-"wvplLIST" <- size of .gig formatted sample
If CheckChunk(test$)=0:SetGadgetText(1,test$+" not matched"):Return:EndIf
Repeat
  Restore buc
  pos.l=Loc(0)+len.l;<-guardar esta posiciÃ³n, que apunta a "LIST"
  Read.s test$;<-"wavefmt " <- standard .wav "fmt " chunk format.
  If CheckChunkandGotoNextChunk(test$)=0:SetGadgetText(1,test$+" not matched"):Return:EndIf
  AddElement(s.PCMsample())
  s.PCMsample()\fmt_chunk=Loc(0)-len.l-8;<-guardar esta posiciÃ³n, que apunta al "fmt " del pcm (20 bytes normalmente)
  Read.s test$;<- "LIST"
  If CheckChunkandGotoNextChunk(test$)=0:SetGadgetText(1,test$+" not matched"):Return:EndIf
  FileSeek(0,Loc(0)-len.l);<-ignore "LIST"
  Read.s test$;<-"INFOINAM"
  If CheckChunk(test$)=0:SetGadgetText(1,test$+" not matched"):Return:EndIf
  pos1.l=Loc(0)+len.l
  s.PCMsample()\name=RTrim(ReadString(0))
  FileSeek(0,pos1.l)
  Read.s test$;<-"data"
  If CheckChunkandGotoNextChunk(test$)=0:SetGadgetText(1,test$+" not matched"):Return:EndIf
  s.PCMsample()\datachunk=Loc(0)-len.l-8;<-guardar esta posiciÃ³n, que apunta al "data" del pcm
  FileSeek(0,pos.l):If Eof(0):Break:EndIf
  Read.s test$;<-"LIST"
  If CheckChunk(test$)=0
    If CheckChunk("einf")=0:SetGadgetText(1,"einf or "+test$+" not matched"):Return:EndIf
    Break
  EndIf
ForEver

SetGadgetText(1,Str(ListSize(s.PCMsample()))+" samples found. PUSH here to EXTRACT")
AddGadgetItem(2,-1,o.gigsample\name)
AddGadgetItem(2,-1,o.gigsample\group)

ForEach s.PCMsample()
  AddGadgetItem(2,-1,s.PCMsample()\name)
Next

For n.l=0 To CountGadgetItems(2)-1
  SetGadgetItemState(2,n,#PB_Tree_Expanded)
Next
Return

parsecolh:
Restore colhdata
Read.s test$;<-"DLS colh"
If CheckChunkandGotoNextChunk(test$)=0:SetGadgetText(1,test$+" not matched"):Return:EndIf
Read.s test$;<-"LIST"
If CheckChunk(test$)=0:SetGadgetText(1,test$+" not matched"):Return:EndIf
pos.l=Loc(0)+len.l;<-guardar esta posiciÃ³n, que apunta a "ptbl"
Read.s test$;<- "linsLIST"
If CheckChunk(test$)=0:SetGadgetText(1,test$+" not matched"):Return:EndIf;<-ignore "linsLIST"
p.s=parse(4):If p.s<>"OK":SetGadgetText(1,p.s):Return:EndIf;<-parse "ins insh","LIST","LIST","LIST"
FileSeek(0,Loc(0)-len.l);<-ignore "LIST"
Read.s test$;<-"INFOINAM"
If CheckChunk(test$)=0:SetGadgetText(1,test$+" not matched"):Return:EndIf
o.gigsample\name=RTrim(ReadString(0))
FileSeek(0,pos.l)
Read.s test$;<-"ptbl"
If CheckChunkandGotoNextChunk(test$)=0:SetGadgetText(1,test$+" not matched"):Return:EndIf
Read.s test$;<-"LIST" <- contains the size of entire samples chunk
If CheckChunk(test$)=0:SetGadgetText(1,test$+" not matched"):Return:EndIf;<-ignore it
Read.s test$;<-"wvplLIST" <- size of .gig formatted sample
If CheckChunk(test$)=0:SetGadgetText(1,test$+" not matched"):Return:EndIf
Repeat:Restore buc2
  Read.s test$;<-"wavefmt " <- .wav "fmt " chunk format.
  If CheckChunk(test$)=0
    If CheckChunk("INFOICMT")=0:SetGadgetText(1,"INFOICMT not matched"):Return:EndIf
    pos1.l=Loc(0)+len.l
    o.gigsample\comment[0]=RTrim(ReadString(0))
    FileSeek(0,pos1.l)
    If CheckChunk("ICOP")=0:SetGadgetText(1,"ICOP not matched"):Return:EndIf
    pos1.l=Loc(0)+len.l
    o.gigsample\comment[1]=RTrim(ReadString(0))
    FileSeek(0,pos1.l)
    If CheckChunk("INAM")=0:SetGadgetText(1,"INAM not matched"):Return:EndIf
    pos1.l=Loc(0)+len.l
    o.gigsample\comment[2]=RTrim(ReadString(0))
    FileSeek(0,pos1.l)
    If CheckChunk("ISFT")=0:SetGadgetText(1,"ISFT not matched"):Return:EndIf
    o.gigsample\comment[3]=RTrim(ReadString(0))
    Break
  EndIf
  AddElement(s.PCMsample())
  s.PCMsample()\fmt_chunk=Loc(0)-8;<-guardar esta posiciÃ³n, que apunta al "fmt " del pcm (20 bytes normalmente)
  FileSeek(0,Loc(0)+len.l)
  Read.s test$;<-"wsmp"
  If CheckChunkandGotoNextChunk(test$)=0:SetGadgetText(1,test$+" not matched"):Return:EndIf
  Read.s test$;<-"data"
  If CheckChunkandGotoNextChunk(test$)=0:SetGadgetText(1,test$+" not matched"):Return:EndIf
  s.PCMsample()\datachunk=Loc(0)-len.l-8;<-guardar esta posiciÃ³n, que apunta al "data" del pcm
  Read.s test$;<- "LIST"
  If CheckChunk(test$)=0:SetGadgetText(1,test$+" not matched"):Return:EndIf;<-ignore "LIST"
  Read.s test$;<-"INFOINAM"
  If CheckChunk(test$)=0:SetGadgetText(1,test$+" not matched"):Return:EndIf
  pos1.l=Loc(0)+len.l
  s.PCMsample()\name=RTrim(ReadString(0))
  FileSeek(0,pos1.l)
  Read.s test$;<- "LIST" (size of sample)
  If CheckChunk(test$)=0:SetGadgetText(1,test$+" not matched"):Return:EndIf
ForEver;Until Eof(0)

SetGadgetText(1,Str(ListSize(s.PCMsample()))+" samples found. PUSH here to EXTRACT")
AddGadgetItem(2,-1,o.gigsample\name)

ForEach s.PCMsample()
  AddGadgetItem(2,-1,s.PCMsample()\name)
Next

For n.l=0 To 3:AddGadgetItem(2,-1,o.gigsample\comment[n.l]):Next
For n.l=0 To CountGadgetItems(2)-1
  SetGadgetItemState(2,n,#PB_Tree_Expanded)
Next
Return
DataSection
  inicio:
  Data.s "RIFF","DLS LIST","vers","colh","dlid"
  Data.s "LIST","linsLIST","ins LIST","INFOINAM"
  Data.s "LIST","3griLIST","3gnl3gnm"
  Data.s "ptbl","LIST"
  Data.s "wvplLIST"
  buc:
  Data.s "wavefmt ","LIST","INFOINAM","data"
  Data.s "LIST"
  colhdata:
  Data.s "DLS colh","LIST","linsLIST","ins insh","LIST","LIST","LIST","INFOINAM"
  Data.s "ptbl","LIST","wvplLIST"
  buc2:
  Data.s "wavefmt ","wsmp","data","LIST","INFOINAM","LIST"
EndDataSection

traumatic · Post by **traumatic** » Thu Jan 15, 2004 9:46 pm

Cool! Are you planning to do more in the direction of sample-conversion?
Like PB-CDXtract or something?

einander · Post by **einander** » Thu Jan 15, 2004 9:53 pm

@Psychophanta:

Works perfect converting samples to 16/44 wav.
Thanks for sharing it!

Regards
Einander

Psychophanta · Post by **Psychophanta** » Thu Jan 15, 2004 11:02 pm

That is a fast made program to simply just extract PCM .WAV from .GIG files. I needed it, and i made it quickly, thanks again to PB.

Are you planning to do more in the direction of sample-conversion?
Like PB-CDXtract or something?

Not really, but it is a good thing to convert propietary formats to another standard formats, but it is very hard to make what is called "reverse-ingeneering", parsing files, etc.

traumatic · Post by **traumatic** » Thu Jan 15, 2004 11:20 pm

Psychophanta wrote: [...]but it is very hard to make what is called "reverse-ingeneering", parsing files, etc.

i know, i once had to deal with exs-files (emagic ex24).
no official support, really a pain! but hey - it worked in the end...

PureBasic Forums - English

GigaSampler (.GIG) files to .WAV extraction

GigaSampler (.GIG) files to .WAV extraction

Re: GigaSampler (.GIG) files to .WAV extraction