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• avfilter/avfilter : Add numbers of (in|out)pads directly to AVFilter

  12 août 2021, par Andreas Rheinhardt

  avfilter/avfilter : Add numbers of (in|out)pads directly to AVFilter
  Up until now, an AVFilter's lists of input and output AVFilterPads
  
  were terminated by a sentinel and the only way to get the length
  
  of these lists was by using avfilter_pad_count(). This has two
  
  drawbacks : first, sizeof(AVFilterPad) is not negligible
  
  (i.e. 64B on 64bit systems) ; second, getting the size involves
  
  a function call instead of just reading the data.
  This commit therefore changes this. The sentinels are removed and new
  
  private fields nb_inputs and nb_outputs are added to AVFilter that
  
  contain the number of elements of the respective AVFilterPad array.
  Given that AVFilter.(in|out)puts are the only arrays of zero-terminated
  
  AVFilterPads an API user has access to (AVFilterContext.(in|out)put_pads
  
  are not zero-terminated and they already have a size field) the argument
  
  to avfilter_pad_count() is always one of these lists, so it just has to
  
  find the filter the list belongs to and read said number. This is slower
  
  than before, but a replacement function that just reads the internal numbers
  
  that users are expected to switch to will be added soon ; and furthermore,
  
  avfilter_pad_count() is probably never called in hot loops anyway.
  This saves about 49KiB from the binary ; notice that these sentinels are
  
  not in .bss despite being zeroed : they are in .data.rel.ro due to the
  
  non-sentinels.
  Reviewed-by : Nicolas George <george@nsup.org>
  
  Signed-off-by : Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
  

  • [DH] libavfilter/aeval.c
  • [DH] libavfilter/af_acontrast.c
  • [DH] libavfilter/af_acopy.c
  • [DH] libavfilter/af_acrossover.c
  • [DH] libavfilter/af_acrusher.c
  • [DH] libavfilter/af_adeclick.c
  • [DH] libavfilter/af_adelay.c
  • [DH] libavfilter/af_adenorm.c
  • [DH] libavfilter/af_aderivative.c
  • [DH] libavfilter/af_aecho.c
  • [DH] libavfilter/af_aemphasis.c
  • [DH] libavfilter/af_aexciter.c
  • [DH] libavfilter/af_afade.c
  • [DH] libavfilter/af_afftdn.c
  • [DH] libavfilter/af_afftfilt.c
  • [DH] libavfilter/af_aformat.c
  • [DH] libavfilter/af_afreqshift.c
  • [DH] libavfilter/af_afwtdn.c
  • [DH] libavfilter/af_agate.c
  • [DH] libavfilter/af_aiir.c
  • [DH] libavfilter/af_alimiter.c
  • [DH] libavfilter/af_amerge.c
  • [DH] libavfilter/af_amix.c
  • [DH] libavfilter/af_amultiply.c
  • [DH] libavfilter/af_anequalizer.c
  • [DH] libavfilter/af_anlmdn.c
  • [DH] libavfilter/af_anlms.c
  • [DH] libavfilter/af_anull.c
  • [DH] libavfilter/af_apad.c
  • [DH] libavfilter/af_aphaser.c
  • [DH] libavfilter/af_apulsator.c
  • [DH] libavfilter/af_aresample.c
  • [DH] libavfilter/af_arnndn.c
  • [DH] libavfilter/af_asetnsamples.c
  • [DH] libavfilter/af_asetrate.c
  • [DH] libavfilter/af_ashowinfo.c
  • [DH] libavfilter/af_asoftclip.c
  • [DH] libavfilter/af_asr.c
  • [DH] libavfilter/af_astats.c
  • [DH] libavfilter/af_asubboost.c
  • [DH] libavfilter/af_asupercut.c
  • [DH] libavfilter/af_atempo.c
  • [DH] libavfilter/af_axcorrelate.c
  • [DH] libavfilter/af_biquads.c
  • [DH] libavfilter/af_bs2b.c
  • [DH] libavfilter/af_channelmap.c
  • [DH] libavfilter/af_channelsplit.c
  • [DH] libavfilter/af_chorus.c
  • [DH] libavfilter/af_compand.c
  • [DH] libavfilter/af_compensationdelay.c
  • [DH] libavfilter/af_crossfeed.c
  • [DH] libavfilter/af_crystalizer.c
  • [DH] libavfilter/af_dcshift.c
  • [DH] libavfilter/af_deesser.c
  • [DH] libavfilter/af_drmeter.c
  • [DH] libavfilter/af_dynaudnorm.c
  • [DH] libavfilter/af_earwax.c
  • [DH] libavfilter/af_extrastereo.c
  • [DH] libavfilter/af_firequalizer.c
  • [DH] libavfilter/af_flanger.c
  • [DH] libavfilter/af_haas.c
  • [DH] libavfilter/af_hdcd.c
  • [DH] libavfilter/af_headphone.c
  • [DH] libavfilter/af_join.c
  • [DH] libavfilter/af_ladspa.c
  • [DH] libavfilter/af_loudnorm.c
  • [DH] libavfilter/af_lv2.c
  • [DH] libavfilter/af_mcompand.c
  • [DH] libavfilter/af_pan.c
  • [DH] libavfilter/af_replaygain.c
  • [DH] libavfilter/af_rubberband.c
  • [DH] libavfilter/af_sidechaincompress.c
  • [DH] libavfilter/af_silencedetect.c
  • [DH] libavfilter/af_silenceremove.c
  • [DH] libavfilter/af_sofalizer.c
  • [DH] libavfilter/af_speechnorm.c
  • [DH] libavfilter/af_stereotools.c
  • [DH] libavfilter/af_stereowiden.c
  • [DH] libavfilter/af_superequalizer.c
  • [DH] libavfilter/af_surround.c
  • [DH] libavfilter/af_tremolo.c
  • [DH] libavfilter/af_vibrato.c
  • [DH] libavfilter/af_volume.c
  • [DH] libavfilter/af_volumedetect.c
  • [DH] libavfilter/asink_anullsink.c
  • [DH] libavfilter/asrc_afirsrc.c
  • [DH] libavfilter/asrc_anoisesrc.c
  • [DH] libavfilter/asrc_anullsrc.c
  • [DH] libavfilter/asrc_flite.c
  • [DH] libavfilter/asrc_hilbert.c
  • [DH] libavfilter/asrc_sinc.c
  • [DH] libavfilter/asrc_sine.c
  • [DH] libavfilter/avf_abitscope.c
  • [DH] libavfilter/avf_ahistogram.c
  • [DH] libavfilter/avf_aphasemeter.c
  • [DH] libavfilter/avf_avectorscope.c
  • [DH] libavfilter/avf_showcqt.c
  • [DH] libavfilter/avf_showfreqs.c
  • [DH] libavfilter/avf_showspatial.c
  • [DH] libavfilter/avf_showspectrum.c
  • [DH] libavfilter/avf_showvolume.c
  • [DH] libavfilter/avf_showwaves.c
  • [DH] libavfilter/avfilter.c
  • [DH] libavfilter/avfilter.h
  • [DH] libavfilter/buffersink.c
  • [DH] libavfilter/buffersrc.c
  • [DH] libavfilter/f_bench.c
  • [DH] libavfilter/f_cue.c
  • [DH] libavfilter/f_drawgraph.c
  • [DH] libavfilter/f_ebur128.c
  • [DH] libavfilter/f_graphmonitor.c
  • [DH] libavfilter/f_interleave.c
  • [DH] libavfilter/f_loop.c
  • [DH] libavfilter/f_metadata.c
  • [DH] libavfilter/f_perms.c
  • [DH] libavfilter/f_realtime.c
  • [DH] libavfilter/f_reverse.c
  • [DH] libavfilter/f_segment.c
  • [DH] libavfilter/f_select.c
  • [DH] libavfilter/f_sendcmd.c
  • [DH] libavfilter/f_sidedata.c
  • [DH] libavfilter/f_zmq.c
  • [DH] libavfilter/fifo.c
  • [DH] libavfilter/internal.h
  • [DH] libavfilter/setpts.c
  • [DH] libavfilter/settb.c
  • [DH] libavfilter/split.c
  • [DH] libavfilter/trim.c
  • [D

• tests/dnn : Make DNN tests regular libavfilter tests

  15 décembre 2021, par Andreas Rheinhardt

  tests/dnn : Make DNN tests regular libavfilter tests
  They test libavfilter internal API, so they should be libavfilter
  
  test programs (which implies : linked statically to libavfilter
  
  to access internal APIs and linked normally (statically or dynamically
  
  depending upon the build configuration) against all the other libs).
  Right now, they are always linked statically against all libs,
  
  which is a significant size waste compared to shared libs as all
  
  of libavcodec has been pulled in despite not being really used.
  
  This also leads to linking failures on systems for which av_export_avutil
  
  is intended : libavcodec does not expect to be linked statically
  
  against the library providing avpriv_(cga|vga16)_font in this case.
  
  This is fixed by this commit.
  Signed-off-by : Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
  

  • [DH] libavfilter/Makefile
  • [DH] libavfilter/tests/.gitignore
  • [DH] libavfilter/tests/dnn-layer-avgpool.c
  • [DH] libavfilter/tests/dnn-layer-conv2d.c
  • [DH] libavfilter/tests/dnn-layer-dense.c
  • [DH] libavfilter/tests/dnn-layer-depth2space.c
  • [DH] libavfilter/tests/dnn-layer-mathbinary.c
  • [DH] libavfilter/tests/dnn-layer-mathunary.c
  • [DH] libavfilter/tests/dnn-layer-maximum.c
  • [DH] libavfilter/tests/dnn-layer-pad.c
  • [DH] tests/Makefile
  • [DH] tests/dnn/.gitignore
  • [DH] tests/dnn/Makefile
  • [DH] tests/dnn/dnn-layer-avgpool-test.c
  • [DH] tests/dnn/dnn-layer-conv2d-test.c
  • [DH] tests/dnn/dnn-layer-dense-test.c
  • [DH] tests/dnn/dnn-layer-depth2space-test.c
  • [DH] tests/dnn/dnn-layer-mathbinary-test.c
  • [DH] tests/dnn/dnn-layer-mathunary-test.c
  • [DH] tests/dnn/dnn-layer-maximum-test.c
  • [DH] tests/dnn/dnn-layer-pad-test.c
  • [DH] tests/fate/dnn.mak

• Nginx Rtmp Module - How to check resolution when pushing rtmp stream to server before redirecting stream to another application ?

  22 août 2022, par bui the vuong

  I have a problem when developing a livestream system with nginx-rtmp-module . I have consulted some systems, there is a function that when pushing the rtmp stream, the livestream systems can recognize the resolution of the stream -> from there it will encode to hls with the corresponding profiles. For example stream 720p produces hls file with 360p -> 720p , if stream 1080p will produce hls file with 360p -> 1080p . I have tried the ways but no success. So how can I check the resolution and redirect the rtmp stream to the appropriate application for encoding. Looking forward to everyone's advice.