[FFmpeg-devel] [PATCH] mlpdec: Move quant_step_size out of substream context.

Michael Niedermayer michaelni
Wed Aug 13 00:15:57 CEST 2008

On Tue, Aug 12, 2008 at 06:24:14PM -0300, Ramiro Polla wrote:
> Hello,
> Since I don't have any specs for MLP, it's hard to know if this change
> will introduce any regression. Probably not, since the current code
> already has a similar limitation.
> quant_step_size is currently defined for every channel for every
> substream. I guess that all variables related to audio channels (not
> matrix channels) should be the same for all substreams. So we could
> save by having the channel information on a separate struct.
> I have tested this with all my samples. Whenever two different streams
> write quant_step_size to the same channel, it has always been the same
> value. Furthermore, the code already has only enough space for each
> channel (and not channel * substream) for sign_huff_offset, which is
> updated whenever quant_step_size is read.

Is this useful or needed for your encoder? if not then iam slightly
against it.

Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

Dictatorship naturally arises out of democracy, and the most aggravated
form of tyranny and slavery out of the most extreme liberty. -- Plato
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