[Flac-dev] En/decoding 32bit Integer Formats

[taktik]

On 05.09.2006, at 22:51, Josh Coalson wrote:

> --- taktik <taktik at renoise.com> wrote:
>> What exactly is the reason why libFlac and/or the FLAC command-line
>> en/decoder currently doesn't support 32bit integer samples?
>>
>> The comment in "FLAC/format.h" -> of
>> FLAC__REFERENCE_CODEC_MAX_BITS_PER_SAMPLE notes that
>> the FLAC format supports 32bit, but the reference en/decoders
>> currently do not. Does
>> this mean that libFlac or just the commandline tool is limited to 24
>> bit?
>>
>> We would love to use FLAC as a total replacement for WAV files in our
>>
>> product (in exported song
>> and instrument content), but really need to have 32bit support, as
>> our internal sample format
>> is 32 bit.
>> I already hackily tried to change
>> FLAC__REFERENCE_CODEC_MAX_BITS_PER_SAMPLE to 32u and ran
>> some tests using libFlac. All seemed to work well, so this limitation
>> is maybe (no longer?)
>> needed?
>
> if this works for you, then you are lucky!  the missing parts
> are 32-bit handling in flac itself (parsing PCM samples), and
> tuning for 32-bit in libFLAC.  otherwise the current libFLAC
> should handle 32-bit but I don't have any good material to
> tune against.


Great.

Assuming I would send you a patch that integrates the 32bit pcm im/ 
export in the
commandline tool, adjust libFlac to handle 32bit int samples, and add  
some test
for all this: Could this then be integrated into the official release?

Greets,
eduard

-------------- next part --------------
A non-text attachment was scrubbed...
Name: PGP.sig
Type: application/pgp-signature
Size: 186 bytes
Desc: This is a digitally signed message part
Url : http://lists.xiph.org/pipermail/flac-dev/attachments/20060906/12da1fca/PGP.pgp