[FFmpeg-devel] dvdata.h mess, are there still objections to fixing it
Thu Oct 15 21:12:02 CEST 2009
Reimar D?ffinger <Reimar.Doeffinger at gmx.de> writes:
> On Thu, Oct 15, 2009 at 07:44:24PM +0100, M?ns Rullg?rd wrote:
>> Reimar D?ffinger <Reimar.Doeffinger at gmx.de> writes:
>> > On Thu, Oct 15, 2009 at 07:21:36PM +0100, M?ns Rullg?rd wrote:
>> >> Reimar D?ffinger <Reimar.Doeffinger at gmx.de> writes:
>> >> > I remember that dvdata.h was discussed in the past.
>> >> > There is a huge amount of data in that header, and it is included 3
>> >> > times.
>> >> > That means that the FFmpeg binary contains
>> >> > dv_idct_factor_hd1080, dv_idct_factor_hd720, work_chunks_dv100pali,
>> >> > work_chunks_dv100ntsci, dv_idct_factor_sd etc. 3 times, making about
>> >> > 233kB of .bss wasted for no good reason at all.
>> >> > Preferably someone should check which ones are actually, really,
>> >> > performance relevant and that compiler optimizes away and keep only
>> >> > those in the header, but in case nobody volunteers, are there any
>> >> > objections to moving dv_profiles and all the non-const stuff to a
>> >> > separate .c file (while adding ff_ prefix)?
>> >> Just do it.
>> > Yeah, after looking at its effects I started working on it.
>> > It only moves out the profiles, which I really expect not
>> > to make any performance difference.
>> > .rodata size reduced by 3264 bytes, .bss size reduced by
>> > 312416 bytes (on x86_64).
>> > While I can't imagine that I could have messed it up, I'd appreciate a
>> > quick verification of the Makefile part.
>> I can't read michael-diffs.
> Huh? If you mean the svn cp "mess",
> just look only at the last few lines of the diff.
Diego said OK, so I trust it's fine.
mans at mansr.com
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