flac 1.4.0 encoding slowdown when used in CinelerraGG?

[Randrianasulu]

Hello!

we tried to upgrade our copy of FLAC library from 1.3.2 to 1.4.0 and got quite unexpected slowdown, more than 2x!

Application's code:
https://git.cinelerra-gg.org/git/?p=goodguy/cinelerra.git;a=summary

especially see cinelerra/fileflac.C

you need to replace flac tarball in thirdparty/src and patch configure.ac

may be our API usage was slightly wrong before and now it just become much more visible speed-wise? Sorry, not really programmer enough (

our maillist thread where 2x sliwdown was reported
https://www.mail-archive.com/cin@lists.cinelerra-gg.org/msg04787.html

[ktmf01]

What compiler are you using? Have you also compared resulting filesizes or only speed?

[ktmf01]

I see here that no compression level is set. This means Cinelerra is probably affected by this change: 7b73bbc

In effect, it means the default compression level changed from 0, the initialization value, to 5, which is the intended default. With music-like sources, you should see a compression improvement of about 10%. If you rather have faster compression instead of better compression, just add FLAC__stream_encoder_set_compression_level(0) just before FLAC__stream_encoder_init_file

[Randrianasulu]

oh, it seems we were bitten by default debug=yes. disabling debug give our speed back, it seems.

Thanks! (as side effect of this I even implemented compression level choice GUI for our program! so, win after all)