Le duodi 12 fructidor, an CCXXIV, Paul B Mahol a écrit : > Nicolas, what is status of this? > > I'm currently interested in frame multithreading in lavfi.
I am currently locked on a patch series to replace the recursive calls to filter_frames() with a FIFO on each link. I think this is an absolute necessity before considering inter-filter multithreading. Unfortunately, this is very tricky business because the filters' implementation are not ready for it. Filters must be activated, by actually calling their filter_frame() methods, when a frame is available, but not repeatedly so when they can not perform any work, but they often provide no visible test for that. Plus, the global API for activating a filtergraph was not designed with that kind of working in mind. I have made significant progress in the last weeks. I think I have got the propagating of frames working, and the propagating of EOF conditions on 1-to-1 filters too, but there is still an issue with filters with multiple inputs. I could post the whole patch as is at any time, but I do not think it would do much good as is. Regards, -- Nicolas George
signature.asc
Description: Digital signature
_______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-devel
