git.videolan.org Git - x264.git/summary

Les articles publiés sur le site

• x86 : AVX-512 mbtree_fix8_pack and mbtree_fix8_unpack

  7 octobre 2017, par Henrik Gramner

  x86: AVX-512 mbtree_fix8_pack and mbtree_fix8_unpack
  
  Takes advantage of opmasks to avoid having to use scalar code for the tail.
  
  Also make some slight improvements to the checkasm test.
  

  • [DH] common/x86/mc-a2.asm
  • [DH] common/x86/mc-c.c
  • [DH] tools/checkasm.c

• x86 : Faster mbtree_fix8_unpack

  7 octobre 2017, par Henrik Gramner

  x86: Faster mbtree_fix8_unpack
  
  Use a different multiplier in order to eliminate some shifts.
  
  About 25% faster than before.
  

  • [DH] common/x86/mc-a2.asm

• Don’t force fast-intra for subme 3

  22 septembre 2017, par Anton Mitrofanov

  Don't force fast-intra for subme < 3
  
  It have caused significant quality hit without any meaningful (if any) speed up.
  

  • [DH] encoder/analyse.c

• Make ref and i4x4_mode costs global instead of static

  22 septembre 2017, par Anton Mitrofanov

  Make ref and i4x4_mode costs global instead of static
  
  Fixes some thread safety doubts and makes code cleaner.
  Downside: slightly higher memory usage when calling multiple encoders from the same application.
  

  • [DH] common/common.h
  • [DH] encoder/analyse.c
  • [DH] encoder/encoder.c

• Fix thread safety of x264_threading_init() and use of X264_PTHREAD_MUTEX_INITIALIZER...

  22 septembre 2017, par Anton Mitrofanov

  Fix thread safety of x264_threading_init() and use of X264_PTHREAD_MUTEX_INITIALIZER with win32thread
  

  • [DH] common/osdep.c
  • [DH] common/threadpool.c
  • [DH] common/win32thread.c