michaelni changed the topic of #ffmpeg-devel to: Welcome to the FFmpeg development channel | Questions about using FFmpeg or developing with libav* libs should be asked in #ffmpeg | This channel is publicly logged | FFmpeg 6.1.1 has been released! | Please read ffmpeg.org/developer.html#Code-of-conduct
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<Lynne> what's the overhead of larger? a function call that writes 36 bytes to an array, or a memcpy that writes a non-constant number of bytes (that's usually 36 bytes)?
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<BtbN> Unless it's a really huge memcpy, I don't expect there to be a notable difference
<Lynne> the destination memory may be slow (non-RAM, like the NIC buffer), and the function does writes a few bytes at a time
<Lynne> yeah, but it avoids passing a megabyte of just mostly unused array
<BtbN> If it's some magic buffer, like gpu uswc memory or what it's called... It might be faster to prepare a local buffer, and then copy it over in one go with a specialized routine
<Lynne> linux finally supports direct NIC ring buffer writes btw, useful for gigabits of uncompressed video, you don't even need root access
<BtbN> Realistically, it will need benchmarked
<BtbN> The kernel might be doing some magic as well, to only copy on syscall
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<Lynne> I think I found the only legitimate use of c1x's auto keyword, in for loops
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<cone-785> ffmpeg Wenbin Chen master:c695de56b5ba: libavfilter/dnn_bakcend_openvino: Add automatic input/output detection
<cone-785> ffmpeg Wenbin Chen master:d52e8ed11430: libavfilter/vf_dnn_detect: Use class confidence to filt boxes
<cone-785> ffmpeg Wenbin Chen master:3de38b9da5c2: libavfilter/dnn_interface: use dims to represent shapes
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<cone-140> ffmpeg Andreas Rheinhardt master:8f791304f2e7: avcodec/dxvenc, hap(dec|enc): Move TextureDSPContext to stack
<cone-140> ffmpeg Andreas Rheinhardt master:e1d1304b4b30: avcodec/texturedspenc: Remove unused rgtc1_u_alpha encoding func
<cone-140> ffmpeg Andreas Rheinhardt master:916f01674178: avcodec/dxvenc: Fix data races with slice threading
<cone-140> ffmpeg Andreas Rheinhardt master:555879ca7cf5: avcodec/dxvenc: Don't cast const away
<cone-140> ffmpeg Andreas Rheinhardt master:a3fc9fb9fbc0: avcodec/texturedsp: Add separate TextureDSPEncContext
<cone-140> ffmpeg Andreas Rheinhardt master:341d0419e129: avcodec/texturedsp: Factor common code out
<cone-140> ffmpeg Andreas Rheinhardt master:4f58372c10df: avcodec/hap: Avoid unnecessary opt.h inclusion
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<elenril> mkver: do you feel particularly strongly about -Ilibavcodec for bsfs?
<mkver> It is wrong that some the compilation flag of a file will be affected by whether something in another subfolder needs it.
<elenril> not sure what you mean by this
<elenril> I'm modifying CPPFLAGS for bsfs only
<cone-140> ffmpeg Anton Khirnov master:e0da916b8f5b: fftools/ffmpeg: optimize inter-thread queue sizes
<mkver> No, you are modifying it for all files that are needed by BSFs. Including e.g. h264_levels.o.
<elenril> oh, I didn't realize
<elenril> stupid of me
<elenril> would you be ok with doing it just for bsf/*
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<j-b> good morning
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<kierank> another beautiful day on ffmpeg-devel
<elenril> ...17 mails from the last 5 hours
<elenril> must be another cursed thread
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