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• avcodec/vp6 : Don't reload unnecessarily often in get_vlc2()

  17 avril, par Andreas Rheinhardt

  avcodec/vp6: Don't reload unnecessarily often in get_vlc2()
  
  The VLC trees used here have very few different codes
  and are therefore guaranteed to not be very deep: The AC/DC
  VLCs have 12 elements and therefore a depth <= 11 whereas
  the run VLCs have only nine elements and therefore a depth <= 8.
  This allows to reduce the worst-case number of reloads for
  reading a VLC code.
  
  Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
  

  • [DH] libavcodec/vp6.c

• avcodec/vp6 : Don't initialize unused VLC tables

  17 avril, par Andreas Rheinhardt

  avcodec/vp6: Don't initialize unused VLC tables
  
  There are only 2*3*4 VLC trees for decoding Huffman encoded
  AC coefficients; see section 13.3.2 of the spec.
  
  Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
  

  • [DH] libavcodec/vp56.h
  • [DH] libavcodec/vp6.c

• avcodec/huffman : Switch to ff_vlc_init_from_lengths()

  17 avril, par Andreas Rheinhardt

  avcodec/huffman: Switch to ff_vlc_init_from_lengths()
  
  Avoids having to create the codes ourselves.
  
  Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
  

  • [DH] libavcodec/huffman.c

• avformat/mov : Reduce seek when interleaved_read is disabled

  17 avril, par Zhao Zhili

  avformat/mov: Reduce seek when interleaved_read is disabled
  
  Don't select sample with small dts when interleaved_read is disabled.
  
  Signed-off-by: Zhao Zhili <zhilizhao@tencent.com>
  

  • [DH] libavformat/mov.c

• avcodec/magicyuvenc : Hoist check out of loop

  17 avril, par Andreas Rheinhardt

  avcodec/magicyuvenc: Hoist check out of loop
  
  Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
  

  • [DH] libavcodec/magicyuvenc.c