flac dev - Sep 2004 - Developing SoundFont FLAC compressor using libFLAC

On Wed, 2002-07-17 at 15:34, Josh Coalson wrote:
> 
> Have you seen the API changes in 1.0.3?  Now all metadata is
> parsed and at each decoder layer you can specify which blocks
> get passed up to the metadata callback.  See the
> *_decoder_set_metadata_respond/ignore functions.
> 
> Also, on the encoder size, you can now pass a list of arbitrary
> metadata blocks to encode, instead of just padding and seektable.
> 
Rock on! No, I missed the fact that 1.0.3 has been released :)
> > BTW any plans yet for allowing changing of audio parameters while
> > encoding. I think this would give a significant increase in
> > compression
> > for some SoundFonts because the SoundFont sample chunk is multiple
> > consecutive samples and stereo pairs can be determined from the
> > SoundFont information. Cheers! 
> 
> It's on my TODO list but kind of far down :)  If you want to
> have a crack at it and send me a patch that's fine also.  The
> decoders should be OK, there's just some extra logic that
> would have to be peppered around the stream encoder.
> 
Yeah, no problem. FLAC gives a nice decrease in size as is and adding
this kind of support wouldn't break the SF-FLAC format in the future.
> Josh
> 
I'll let the list know when SF-FLAC is finished, should anyone be
interested. I'm considering starting a FREE SoundFont compressor
campaign, so users will stop using SoundFont encoders that aren't
available on platforms such as Linux. This would also pressure some of
the existing formats to release Linux versions. In order to do this I
need to program a stand alone compressor/de-compressor utility that can
work in Windows, OSX, etc. So I will probably working to get libFLAC to
compile with MingW32 (has this been tried?) Cheers!
	Josh Green

--- Josh Green <jgreen@users.sourceforge.net>
wrote:
> I'll let the list know when SF-FLAC is finished, should anyone be
> interested. I'm considering starting a FREE SoundFont compressor
> campaign, so users will stop using SoundFont encoders that aren't
> available on platforms such as Linux. This would also pressure some
> of
> the existing formats to release Linux versions. In order to do this I
> need to program a stand alone compressor/de-compressor utility that
> can
> work in Windows, OSX, etc. So I will probably working to get libFLAC
> to
> compile with MingW32 (has this been tried?) Cheers!
It should work... someone sent in patches for it a while
back which I incorporated, but let me know.

Or, with Cygwin you can use the straight auto*/libtool build
system on Windows just like with Unix.

Josh


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> --- Josh Green <jgreen@users.sourceforge.net> wrote:
>> I'll let the list know when SF-FLAC is finished, should anyone be
>> interested. I'm considering starting a FREE SoundFont compressor
>> campaign, so users will stop using SoundFont encoders that aren't
>> available on platforms such as Linux. This would also pressure some of
>> the existing formats to release Linux versions. In order to do this I
>> need to program a stand alone compressor/de-compressor utility that
>> can
>> work in Windows, OSX, etc. So I will probably working to get libFLAC
>> to
>> compile with MingW32 (has this been tried?) Cheers!
>
> It should work... someone sent in patches for it a while
> back which I incorporated, but let me know.
>
> Or, with Cygwin you can use the straight auto*/libtool build
> system on Windows just like with Unix.
>
> Josh
>
Sorry, I don't do windows :) I cross compile with MingW32 on Linux and then
test with wine, he he. I'll give it a try. BTW, I finished my SoundFont
FLAC compression plugin, although it is not available on the net for
testing yet. I will probably write a stand alone utility soon. Much praise
for new metadata handling functions, everything went rather smoothly and I
was able to use the file decoder. libFLAC is looking really flexible now,
congrats! Cheers.
    Josh Green