[FFmpeg-devel] [PATCH] libmodplug wrapper
Sat Jul 11 05:11:29 CEST 2009
On Sat, Jul 11, 2009 at 02:04:08AM +0200, Michael Niedermayer wrote:
> On Fri, Jul 10, 2009 at 01:24:27PM +0000, Jai Menon wrote:
> > >
> > > I wish i knew ...
> > > my knowledge of these formats is shallow, if you have a link to some spec/doc
> > > of some representative one so i can get a better feeling of what would be
> > > needed for seeking that link would be appreciated ...
> > Try ftp://de.hornet.org/pub/demos/code/audio/docs/fmoddoc.zip
> > I wrote a protracker renderer in 16bit asm once based on that, and its
> > pretty verbose.
> > I'll again summarise the issues here :
> > libmodplug requires the entire file to be buffered into memory so we
> > have to read the entire contents of the file. If this was split into a
> > decoder and demuxer, the demuxer would have to do this somehow, which
> > i think would be ugly.
> > Assuming we go that route, the next problem is adding seek support.
> > Seeking through libmodplug is using the api call ModPlug_Seek and the
> > demuxer will also need to link to libmodplug. This seems like a bad
> > approach to me. After all, the primary reason for such factoring into
> > demuxer and decoder (other than clarity) is to allow for separation
> > between lavfo and lavc, isnt it? In this specific case, a user won't
> > be able to do mod decoding in the absence of either lavfo or lavc.
> The primary reason for the seperation in this case is so we can watch
> avi/mkv/nut files that have h264 video and mod/s3m/... audio
Err, you can legally kill anybody trying to make such perverted format
(i.e. Matroska devs).
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