On Fri, 14 Dec 2007, Soenke Hahn wrote: > > ... the one thing I would most like to > > see is a lazy version, enabling something like this: > > do > > hFile <- openFile "path/filename" ReadMode > > hOutFile <- openFile "path/newFile" WriteMode > > (format, audioData) <- HSnd.readFile hFile > > HSnd.writeFile hOutFile format $ some_processing_func audioData > > closeFile hFile > > closeFile hOutFile > > I thought about that once too (i used libst, the library behind sox). As i see > it, one problem is, that the headers of audio files (at least the ones, i > looked at) include the length of the soundfile. If 'some_processing_func' > changes the length of the sound data, you would have to modify the header > after writing the whole file. Is this supposed to happen in the 'closeFile' > operation?
Indeed, the iffparse.library on AmigaOS did it this way. This is obviously only possible on devices that allow for 'seek'. _______________________________________________ haskell-art mailing list [email protected] http://lists.lurk.org/mailman/listinfo/haskell-art
