Getting SE play length

[Wichu]

Is there any way to get the play length of a SE, or other .wav file? I want to get one to loop; however, the SE file is different depending on a variable. Since there are hundreds of different SE files playable, making an array with their lengths is not an option.

 

[Dargor]

No unfortunately. However, I think, but am not sure, that there's an Audio module in Script Analysis which allows you to retrieve that kind of information.

try this
viewtopic.php?f=11&t=55486

 

[Wichu]

Thanks. Unfortunately, I'd rather not use that, since it doesn't support MIDI looping by default like RMXP's Audio module (i.e. using control 111 to loop). However, it's given me an idea; I'll use the FMOD Ex script to record the play lengths of each one in a file, then add the contents of the file as a constant in my game.

EDIT: Looking through poccil's Pokémon starter kit, I found an interesting script.

def getOggPage(file)
 pos=file.pos
 dw=file.fgetdw
 return nil if dw!=0x5367674F
 header=file.read(22)
 bodysize=0
 hdrbodysize=file.fgetb
 hdrbodysize.times do
  bodysize+=file.fgetb
 end
 ret=[header,file.pos,bodysize,file.pos+bodysize]
 return ret
end

def oggfiletime(file)
  pages=[]
  page=nil
  begin
    page=getOggPage(file)
    if page
     pages.push(page)
     file.pos=page[3]
    end
  end while page
  if pages.length==0
    return -1
  end
  curserial=nil
  i=-1
  pcmlengths=[]
  rates=[]
  for page in pages
    header=page[0]
    serial=header[10,4].unpack("V")
    frame=header[2,8].unpack("C*")
    frameno=frame[7]
    frameno=(frameno<<8)|frame[6]
    frameno=(frameno<<8)|frame[5]
    frameno=(frameno<<8)|frame[4]
    frameno=(frameno<<8)|frame[3]
    frameno=(frameno<<8)|frame[2]
    frameno=(frameno<<8)|frame[1]
    frameno=(frameno<<8)|frame[0]
    if serial!=curserial
      curserial=serial
      file.pos=page[1]
      packtype=file.fgetb
      string=file.read(6)
      if string!="vorbis"
        return -1
      end
      if packtype!=1
        return -1
      end
      i+=1
      version=file.fgetdw
      if version!=0
        return -1
      end
      channels=file.fgetb
      rates[i]=file.fgetdw
    end
    pcmlengths[i]=frameno
  end
  ret=0.0
  for i in 0...pcmlengths.length
   ret+=pcmlengths[i]*1.0/rates[i]
  end
  return ret
end
def getPlayTime(filename)
  time=-1
  File.open(filename,"rb"){|file|
   file.pos=0
   fdw=file.fgetdw
   if fdw==0x46464952 # "RIFF"
     filesize=file.fgetdw
     wave=file.fgetdw
     if wave!=0x45564157 # "WAVE"
       return -1
     end
     fmt=file.fgetdw
     if fmt!=0x20746d66 # "fmt "
       return -1
     end
     fmtsize=file.fgetdw
     format=file.fgetw
     channels=file.fgetw
     rate=file.fgetdw
     bytessec=file.fgetdw
     if bytessec==0
       return -1
     end
     bytessample=file.fgetw
     bitssample=file.fgetw
     data=file.fgetdw
     if data!=0x61746164 # "data"
       return -1
     end
     datasize=file.fgetdw
     time=(datasize*1.0)/bytessec
   elsif fdw==0x5367674F # "OggS"
     file.pos=0
     time=oggfiletime(file)
   end
  }
  return time
end