zlib deflate (compress) function with vlc_object?

[exebetche]

Hi,

I noticed that vlc use the zlib library. Is that a method to gzip compress data with zlib through vlc_object in LUA scripis?
If not what would be the most portable way to achieve that in a script?

I intend to use this function for the extension VLsub.

Many thanks,

[Jean-Baptiste Kempf]

Why do you need that?

[exebetche]

I'd like to offer the possibility to upload data to a website. The website require the data to be gzipped + base64 encoded. Base64 encode is easy with LUA. For the deflate algorithm, I could use a library like "lua-zlib" but I'd rather not because that means compile it under each OS (it seems LUA doesn't provide a way to directly use C-based .so/.dll).
So if by chance there's a way to do this with vlc out of the box that would be really great.

Thanks,

[Jean-Baptiste Kempf]

Weird website.

[exebetche]

Well, it use XML-RPC protocol so binary/zipped data needs to be base64-encoded. And gzip encoding is used to speed up data transfer. It seems this format is pretty common with this protocol.

[exebetche]

And beyond the weirdness, any idea to gzip data in LUA, pretty please, anybody?

[Jean-Baptiste Kempf]

we need to export the function.

[exebetche]

That's would be nice!

I took a quick look at the code, the function does exist here:
https://www.videolan.org/developers/vlc ... ip/ioapi.c

Somethind else; I suppose it would not be possible to do something like this:
os.execute("cvlc -vvv file:////home/vlc/dummy_file.txt --sout #std{access=file,mux=zip,dts=OUTPUT}'")

I know this doesn't work, but I mean use Vlc from command line through LUA with the dummy interface to zip the stream. It might do the trick until a later release with a proper stream function.