Re: [Opensvcdecoder-support] use_ref_base_pic_flag and store_ref_base_pic_flag

[Médéric B. <Med...@in...>]

Dear jfwang,

I know that the decoder has got problems with MGS decoding process.

Reference lists are created and stored into fill_default_ref_list 
function as you said.
These lists are updated in UpdateReferenceListAddress 
(SliceHeaderExtension.c, line 162) function in order to change the 
memory address with those of the layer which is displayed.

As you said, when use_ref_base_pic_flag = 1, base layer picture should 
be used as reference frmaes. So the list should not be updated in order 
to use the base layer as reference.
Maybe, it can be corrected just by testing if use_ref_base_pic_flag is 
different of 1.

Kind regards,
Médéric

Le 08/03/2011 16:12, jf w a écrit :
> Hi all,
>
> The performance of opensvcdecoder is very good. But when I decode some 
> video, there are some distortion. So  I'm trying to understand the 
> code of opensvcdecoder. However, I encounter some problems.
>
> I think the function fill_default_ref_list in Pic_list.c is to 
> construct refPicLXl0 and refPicLXl1. But I don't find the code about 
> the scenario with use_ref_base_pic_flag=1. When use_ref_base_pic_flag 
> =1, the refPicLXl0 and refPicLXl1 should use the reference base 
> picture when it is available.
>
> Is the scenario handled by other code? Any suggestion is helpful.
>
> -- 
> Thanks,
> jfwang
> BUAA
>
>
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