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• swscale/x86/rgb2rgb : add AVX512ICL version of uyvytoyuv422

  3 février, par Shreesh Adiga

  swscale/x86/rgb2rgb: add AVX512ICL version of uyvytoyuv422
  
  The scalar loop is replaced with masked AVX512 instructions.
  For extracting the Y from UYVY, vperm2b is used instead of
  various AND and packuswb.
  
  Instead of loading the vectors with interleaved lanes as done
  in AVX2 version, normal load is used. At the end of packuswb,
  for U and V, an extra permute operation is done to get the
  required layout.
  
  AMD 7950x Zen 4 benchmark data:
  uyvytoyuv422_c:                                      29105.0 ( 1.00x)
  uyvytoyuv422_sse2:                                    3888.0 ( 7.49x)
  uyvytoyuv422_avx:                                     3374.2 ( 8.63x)
  uyvytoyuv422_avx2:                                    2649.8 (10.98x)
  uyvytoyuv422_avx512icl:                               1615.0 (18.02x)
  
  Signed-off-by: Shreesh Adiga <16567adigashreesh@gmail.com>
  Signed-off-by: James Almer <jamrial@gmail.com>
  

  • [DH] libswscale/x86/rgb2rgb.c
  • [DH] libswscale/x86/rgb_2_rgb.asm

• lavc/vvcdec : export stream level VUI information

  3 février, par Nuo Mi

  lavc/vvcdec: export stream level VUI information
  
  Previously, VUI information was not exposed.
  If the container lacks HDR metadata, HDR videos appear washed out
  
  Command: mp4box -add hdr.mp4#video:colr=nclc,1,1,1 -new new.mp4 && ffprobe new.mp4
  Before: Stream #0:0[0x1](und): Video: vvc (vvc1 / 0x31637676), yuv420p10le(bt709), 1920x1080, 12164 kb/s, 50 fps, 50 tbr, 90k tbn (default)
  After:  Stream #0:0[0x1](und): Video: vvc (vvc1 / 0x31637676), yuv420p10le(tv, bt2020nc/bt2020/arib-std-b67), 1920x1080 [SAR 1:1 DAR 16:9], 12164 kb/s, 50 fps, 50 tbr, 90k tbn (default)
  
  Reported-by: Barry Warburton <blwarburton@gmail.com>
  

  • [DH] libavcodec/vvc/ps.c

• lavc/vvcdec : refact, set AVCodecContext->has_b_frames in sps_export_stream_params

  3 février, par Nuo Mi

  lavc/vvcdec: refact, set AVCodecContext->has_b_frames in sps_export_stream_params
  

  • [DH] libavcodec/vvc/dec.c
  • [DH] libavcodec/vvc/ps.c

• avformat/mov : fix eof check in mov_read_iinf()

  3 février, par Kacper Michajłow

  avformat/mov: fix eof check in mov_read_iinf()
  
  This fix ensures that the loop stops early on EOF. The issue occurs
  because mov_read_infe() performs a version check and skips unsupported
  versions. The problem is that seeking within the stream clears the EOF
  flag, causing avio_feof() to not function as expected. This is resolved
  by moving the EOF check after reading the size and type, ensuring the
  EOF flag is set when necessary.
  
  Signed-off-by: Kacper Michajłow <kasper93@gmail.com>
  Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
  

  • [DH] libavformat/mov.c

• avformat/riffdec : change declaration of ff_get_wav_header()

  3 février, par Viraaj Raulgaonkar

  avformat/riffdec: change declaration of ff_get_wav_header()
  
  Change the type of logctx from void* to AVFormatContext*. This is in
  preparation for the next commit.
  
  Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
  

  • [DH] libavformat/riff.h
  • [DH] libavformat/riffdec.c