getting extracted filepaths from zip file

[NioZero]

hi...


i have used irrlicht file system to store all my models,textures and data into a zip file.. like this

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device->getFileSystem()->addFileArchive("data.zip",true,true,irr::io::EFAT_ZIP);

when i want to create nodes using the models from this zip, i do it this way

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irr::video::ITexture *texture = driver->getTexture("texture.png");
irr::scene::IAnimatedMesh *mesh = smgr->getMesh("model.obj");

and it works perfectly


But suppose that the contents of the zip are these files ...

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texture.png
model.obj
song.mp3
other.file

and i want to load the 'song.mp3' file into another library, but that library doesn't support zip file and need a "full path" to load a song.. and because this file is contained within a zip, I suppose i need to 'extract' that file first before to get the real path. (this might apply to any file)


in other words, i need something like this...

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irr::io::IFileSystem *file = device->getFileSystem();
irr::io::path ExtractedPath = file->extractFileAndGetPath("song.mp3"); // or something like file->getExtractedPath("song.mp3");
mylibrary->loadSong( ExtractedPath );

Is there any way to do this? in the IFileSystem reference does not show anything related...

[Bate]

you can create the file in memory and pass it to other libraries

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  irr::io::IReadFile *readFile = filesystem->createAndOpenFile(filename);

  void* buffer = malloc(readFile->getSize());
  readFile->read(buffer, readFile->getSize());

  // create memory file using buffer and readFile->getSize()
  // with your lib here

  free(buffer);

  readFile->drop();

[NioZero]

you can create the file in memory and pass it to other libraries

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  irr::io::IReadFile *readFile = filesystem->createAndOpenFile(filename);

  void* buffer = malloc(readFile->getSize());
  readFile->read(buffer, readFile->getSize());

  // create memory file using buffer and readFile->getSize()
  // with your lib here

  free(buffer);

  readFile->drop();

i am doing a little testing with audiere for now, but I would like to work for any library...

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irr::io::IReadFile *File = file->createAndOpenFile("song.mp3");

void* buffer = malloc( File->getSize() );
File->read( buffer , File->getSize() );
audiere::OutputStream* stream = audiere::OpenSound( audiodevice , buffer );
free(buffer);
File->drop();

but that doesn't work... even making reinterpret_cast or something else.. ( File->getFilename() only returns the file name, not the extracted path )



likewise thanks for the reply




offtopic: would be nice if the forum had installed bbgeshi. bbcodes look much better

[Bate]

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  irr::io::IReadFile *readFile = filesystem->createAndOpenFile(filename);

  void* buffer = malloc(readFile->getSize());

  readFile->read(buffer, readFile->getSize());

  // you need to create a mem file first
  FilePtr memFile = CreateMemoryFile(buffer, readFile->getSize());

  free(buffer);

  readFile->drop();

  OutputStreamPtr out = OpenSound(deviceAudio, memFile, stream, format);

[NioZero]

i never realized... (I don't work much with audiere), but that's works.. although the reading is very slow, especially if the files are very large ..

But it would do for a while ... thanks ..

[stefbuet]

Irrklang have a similar file managment and you can change loading method by inheriting the IFileFactory. This class is nearly the same as IFile from Irrlicht, same methods, same properties, so you just have to make the same things and you'll be able to use Irrlicht File system with Irrklang, that is to say use archive files. However it's not thread same when streaming large files...