What are all the modules?

[Chris Jensen]

Thankyou, that's exactly what I needed to know.
My only question now is, what are the requirements of the various modules
(specifically I'm wondering why x11 works on my machine but xvideo
segfaults)
Is this stuff in the docs somewhere? I had a look but I couldn't find it, it
would be a really useful addition.
Thanks
Chris Jensen

----- Original Message -----
From: Samuel Hocevar <sam at zoy.org>
To: <vlc at videolan.org>
Sent: Sunday, July 08, 2001 11:29 PM
Subject: Re: What are all the modules?


> On Sun, Jul 08, 2001, Chris Jensen wrote:
>
> > There seems to be no reference as to what all the different output
modules
> > are and what their advantages are, is this information available
anywhere?
> > For instance I can only use the x11 module, but I've read suggestions to
use
> > sdl or xvideo - what is the difference in how these modules access the
video
> > hardware and how would these change the performance?
> > Similarly I would like to find out what the difference is with all the
other
> > modules, eg yuv and yuvmmx.
>
>    Ok, here is a little list:
>
> Modules with the INPUT capability
> ---------------------------------
>   dvd: allows for DVD access, chapter support, and so on
>   ps: reads MPEG1 and MPEG2 Program Stream files (most common MPEG
>       encapsulation format)
>   ts: reads MPEG1 and MPEG2 Transport Stream files (used by DVB and
>       satellite TV)
>   es: reads MPEG1 and MPEG2 Elementary streams (some files with only
>       video and no audio)
>   dummy: doesn't read any files, but recognizes special input patterns
>          such as `vlc:quit' or `vlc:pause:2'
>
> Modules with the VOUT (video output) capability
> -----------------------------------------------
>   x11: displays in an X Window System RGB window, needs an YUV to RGB
>        transformation module
>   xvideo: displays in an X Window System XVideo window, doesn't need
>           an YUV module since it is done in hardware; performances are
>           excellent
>   fb: displays on a Linux RGB framebuffer, needs an YUV module; can be
>       a bit faster than X11 on certain machines
>   beos: displays in a BeOS window; can use hardware YUV if available,
>         otherwise will fallback to using an YUV module
>   macosx: displays in a MacOS X window; currently needs an YUV module
>   sdl: displays using the SDL library; uses X11 or (if available) XVideo
>        under Unix, uses DirectX under Win32, or any other supported
>        output layer
>   directx: displays in a DirectX window; can use hardware YUV if
>            available, otherwise will fallback to using an YUV module
>   ggi: uses the GGI library; performances are poor but it might be
>        useful to people who know what they do; needs an YUV module
>   glide: uses the Glide library; same remarks as for ggi
>   dummy: displays in a memory buffer which won't be displayed on
>          screen; for testing purposes
>
> Modules with the AOUT (audio output) capability
> -----------------------------------------------
>   dsp: standard Linux and BSD OSS /dev/dsp support
>   alsa: uses the Advanced Linux Sound Architecture
>   esd: uses the Esound daemon; doesn't work properly due to latency issues
>   sdl: uses the SDL library; /dev/dsp under Unix, DirectSound under Win32
>   macosx: uses the OSX API
>   directx: uses DirectSound
>   beos: uses the BeOS API
>   dummy: plays sound in a memory buffer which won't be sent to the
>          soundcard; for testing purposes
>
> Modules with the INTF (interface) capability
> --------------------------------------------
>   gtk,gnome: most up-to-date interfaces, use either Gtk or GNOME
>   qt,kde: use the Qt or KDE libraries; haven't been updated for a while
>   beos: uses the BeOS API
>   macosx: minimal MacOS X GUI
>   rc: remote command interface
>   dummy: displays no interface, for testing purposes
>
> Other modules
> -------------
>   YUV modules: yuv, yuvmmx; used for YUV to RGB transformations
>   downmix modules: downmix, downmix3dn, downmixsse; used by the AC3
decoder
>   IMDCT modules: imdct, imdct3dn, imdctsse; used by the AC3 decoder
>   motion compensation modules: motion, motionmmx, motionmmxext; used by
>                                the video decoder
>   IDCT modules: idct, idctclassic, idctmmx, idctmmxext; used by the
>                 video decoder
>
>   mmx, mmxext, sse and 3dn are accelerated versions of the different
>   modules. vlc automatically chooses what it thinks is the best
>   implementation (assuming MMX and 3dn are faster than C, and assuming
>   MMX EXT and SSE are faster than MMX).
>
>
>   Hope everything was clear enough.
>
> --
> Sam.
>
>