[Ffmpeg-devel-old] Native vorbis decoder, unfinished. (was: Re: [Ffmpeg-devel] Native ogg demuxer)
Mon Apr 11 18:58:45 CEST 2005
2005. ?prilis 11. 18.12-kor Alex Beregszaszi ezeket a bolcs gondolatokat
> Attached is my my start on a vorbis implementation, but sadly it looks
> like I wont have time to finish it (pending since last year).
> It has most of the setup packet decoding in it, the actual frame
> decoding is a much easier step.
No. 1.) you have to build the vlc table 2.) you have to decode the floor
3.) you have to decode the residue 4.) inverse coupling 5.) you have to take
the dot product of the floor and the residue 6.) (mdct +)windowing
It might sound easy, but 1.), 2.) and 6.) proved tricky for me (and 3. was/is
wrong in the full html version of the specification).
> Alex Beregszaszi e-mail: alex at fsn.hu
> Free Software Network cell: +36 70 3144424
- Use the Source Luke ! -
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