[FFmpeg-devel] [RFC] Channel layouts
Fri Aug 29 11:42:01 CEST 2008
M?ns Rullg?rd wrote:
> Benjamin Larsson wrote:
>> Peter Ross wrote:
>>>> permutation table to match the internal FFmpeg channel order. I'm not
>>>> sure how well that would fit for most decoders. One other option would
>>>> be to decode in codec native order and then pass a channel permutation
>>>> table via some means. I'll look into what would work best with dca.
>>> If that is correct then all decoders and encoder need a channel order
>>> Why not perform the permutation inside the decoder?
>> Yeah, the issue I'm hinting at is that you might only know how to
>> reorder after you decoded the samples and that you would need to do a
>> memcopy to rearrange the order.
> Wouldn't it be as simple as reordering a few pointer, e.g. before
> passing them to float_to_int16_interleave?
Well codecs will not perform float 2 int by themselfs in the future. But
in theory yes.
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