9 Aug
2005
9 Aug
'05
9:49 p.m.
On Tuesday 09 August 2005 19:14, Erik de Castro Lopo wrote:
When I get a bit of time (yeah right :-)) I'll
take a look at the
BWF stuff.
Nothing like having a truck back up and dump a bunch of standards docs on your
desk... :)
However, since you already have a hardware MPEG codec
(where the
hardware manufacturer pays the licensing fees), you might want
to look at the sf_read_raw/sf_write_raw interfaces:
http://www.mega-nerd.com/libsndfile/api.html#raw
The warning about reading/writing compressed format being undefined
is mainly warning about mixing raw read/writes with standard read/
writes which use libsndfile's internal codecs. This would not be
an issue for your case.
This is pretty much the approach I had in mind. Rivendell is at a crossroads
right now where I need to add two key features:
Surround-sound support (hence WAVE-EX)
OggVorbis and OggFLAC
So, it sounds like this could be a strategic point to make the switch. Would
you accept patches to add BWF functionality? There would be no MPEG codec
support -- I quite understand the patent concerns. Merely the ability to
create and parse the proper chunk structures, dealing only with raw MPEG
frames.
PS : Libsndfile is very close to having full Ogg
Vorbis support
(Conrad ???). Would that be enough for you to drop or at
least partially replace MP3?
Actually, I don't care that much about MP3 -- Layer 2 support is what we
primarily need. If Ogg were available, we'd still need L2 for backward
compatibility, but I suspect it would rapidly become a 'legacy' format.
Cheers!
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| Frederick F. Gleason, Jr. | Director of Broadcast Software Development |
| | Salem Radio Labs |
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| There cannot be a crisis next week. My schedule is already full. |
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