[FFmpeg-devel] Masked LZ Decompression

[Umair Khan]

On Fri, May 20, 2016 at 11:53 PM, Paul B Mahol <onemda at gmail.com> wrote:
> On 5/20/16, Umair Khan <omerjerk at gmail.com> wrote:
>> Hi,
>>
>> I'm working on implementing floating point support in the ALS decoder.
>> In this I've to use masked LZ decompression. I've written the code for
>> myself for masked lz decompression using the help from the reference
>> software.
>> Although, I'm not yet sure if an implementation of masked LZ is
>> already there in FFmpeg or not.
>> If it is already there, it makes no sense to have my own implementation as
>> well.
>>
>> So anybody has any idea if we have masked LZ implementation already or not ?
>
> IMHO we do not. Because its audio related.

Hi Paul,

Any idea about this https://ffmpeg.org/doxygen/2.8/lzw_8c.html ?
This looks like the encoder part - https://ffmpeg.org/doxygen/2.8/lzwenc_8c.html

I'm not sure how masked LZ is different from LZW. There's almost zero
information available on internet about masked lz.
Also, there's a research paper available here -
http://www.aes.org/e-lib/browse.cfm?elib=13068
Any way if we can get this ?

Umair