[flac-dev] Questions about FLAC documentation

Gravis flac at adaptivetime.com
Sun Nov 4 20:34:41 PST 2012

FlacNetLib was by far the most useful code reference.  if you dont
know object oriented programming then you need to muddle through
libFLAC as i havent seen any other implementation that isnt OO.


On Sun, Nov 4, 2012 at 1:16 PM, Serban Giuroiu <giuroiu at gmail.com> wrote:
> Hi, Gravis.
> I'm trying to build a FLAC encoder from scratch. Besides the official format specification, people have mentioned some different decoder implementations in this thread including the reference decoder, J-Ogg, and FlacNetLib.
> I'm wondering if you found any other resources that were useful to you. Thanks!
> Serban
> On Oct 6, 2012, at 2:01 AM, Gravis <flac at adaptivetime.com> wrote:
>> I'm implementing a FLAC decoder from scratch (save OGG stuff if I can
>> help it) because libFLAC simply will not fit my embedded platform,
>> For the most part I'm implementing using just the documentation but
>> not all of the documentation is concise (especially about variable
>> sized fields) and after looking at the libFLAC source I find myself
>> befuddled so I thought it best to get the information from the people
>> who know these things.  So...
>> In "FRAME_HEADER" there is a field of a variable size field with the
>> description "if(variable blocksize) \n <8-56> : 'UTF-8' coded sample
>> number (decoded number is 36 bits)" and I find the encoding scheme is
>> somehow alien (I can't figure out what it has to do with UTF-8)  and
>> it's two following fields to be incomprehensible.  There doesn't seem
>> to be any information indicating their purpose either.
>> The location and coding of audio samples is very nebulous in that I
>> don't know where they are or the specifics of how any of their
>> encoding scheme work.  More details, links to more information and
>> maybe even some pseudo code would be very helpful.  The documentation
>> about the metadata is great...  but it kinda goes downhill after that.
>> It would be fantastic if someone could update the documentation with
>> more information and details.
>> Just a side note, the code seems to be written as if it were intended
>> to be written in C++ (even to comments talk about it as if it were),
>> so why not just make it C++ and put a C frontend on it?
>> -Gravis
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