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• configure : Use correct libm linker flag during math function checks

  23 novembre 2016, par Diego Biurrun

  configure: Use correct libm linker flag during math function checks
  

  • [DBH] configure

• configure : Use correct variable name in libsnappy test

  23 novembre 2016, par Diego Biurrun

  configure: Use correct variable name in libsnappy test
  

  • [DBH] configure

• utils : Add av_stream_add_side_data()

  22 novembre 2016, par James Almer

  utils: Add av_stream_add_side_data()
  
  Functionally similar to av_packet_add_side_data(). Allows the use of an
  already allocated buffer as stream side data.
  
  Signed-off-by: James Almer <jamrial@gmail.com>
  Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>
  

  • [DBH] doc/APIchanges
  • [DBH] libavformat/avformat.h
  • [DBH] libavformat/utils.c
  • [DBH] libavformat/version.h

• aarch64 : vp9itxfm : Do separate functions for half/quarter idct16 and idct32

  22 novembre 2016, par Martin Storsjö

  aarch64: vp9itxfm: Do separate functions for half/quarter idct16 and idct32
  
  This work is sponsored by, and copyright, Google.
  
  This avoids loading and calculating coefficients that we know will
  be zero, and avoids filling the temp buffer with zeros in places
  where we know the second pass won't read.
  
  This gives a pretty substantial speedup for the smaller subpartitions.
  
  The code size increases from 14740 bytes to 24292 bytes.
  
  The idct16/32_end macros are moved above the individual functions; the
  instructions themselves are unchanged, but since new functions are added
  at the same place where the code is moved from, the diff looks rather
  messy.
  
  Before:
  vp9_inv_dct_dct_16x16_sub1_add_neon:     236.7
  vp9_inv_dct_dct_16x16_sub2_add_neon:    1051.0
  vp9_inv_dct_dct_16x16_sub4_add_neon:    1051.0
  vp9_inv_dct_dct_16x16_sub8_add_neon:    1051.0
  vp9_inv_dct_dct_16x16_sub12_add_neon:   1387.4
  vp9_inv_dct_dct_16x16_sub16_add_neon:   1387.6
  vp9_inv_dct_dct_32x32_sub1_add_neon:     554.1
  vp9_inv_dct_dct_32x32_sub2_add_neon:    5198.5
  vp9_inv_dct_dct_32x32_sub4_add_neon:    5198.6
  vp9_inv_dct_dct_32x32_sub8_add_neon:    5196.3
  vp9_inv_dct_dct_32x32_sub12_add_neon:   6183.4
  vp9_inv_dct_dct_32x32_sub16_add_neon:   6174.3
  vp9_inv_dct_dct_32x32_sub20_add_neon:   7151.4
  vp9_inv_dct_dct_32x32_sub24_add_neon:   7145.3
  vp9_inv_dct_dct_32x32_sub28_add_neon:   8119.3
  vp9_inv_dct_dct_32x32_sub32_add_neon:   8118.7
  
  After:
  vp9_inv_dct_dct_16x16_sub1_add_neon:     236.7
  vp9_inv_dct_dct_16x16_sub2_add_neon:     640.8
  vp9_inv_dct_dct_16x16_sub4_add_neon:     639.0
  vp9_inv_dct_dct_16x16_sub8_add_neon:     842.0
  vp9_inv_dct_dct_16x16_sub12_add_neon:   1388.3
  vp9_inv_dct_dct_16x16_sub16_add_neon:   1389.3
  vp9_inv_dct_dct_32x32_sub1_add_neon:     554.1
  vp9_inv_dct_dct_32x32_sub2_add_neon:    3685.5
  vp9_inv_dct_dct_32x32_sub4_add_neon:    3685.1
  vp9_inv_dct_dct_32x32_sub8_add_neon:    3684.4
  vp9_inv_dct_dct_32x32_sub12_add_neon:   5312.2
  vp9_inv_dct_dct_32x32_sub16_add_neon:   5315.4
  vp9_inv_dct_dct_32x32_sub20_add_neon:   7154.9
  vp9_inv_dct_dct_32x32_sub24_add_neon:   7154.5
  vp9_inv_dct_dct_32x32_sub28_add_neon:   8126.6
  vp9_inv_dct_dct_32x32_sub32_add_neon:   8127.2
  
  Signed-off-by: Martin Storsjö <martin@martin.st>
  

  • [DBH] libavcodec/aarch64/vp9itxfm_neon.S

• matroska : use av_stream_add_side_data() for stereo3d side data

  22 novembre 2016, par James Almer

  matroska: use av_stream_add_side_data() for stereo3d side data
  
  Signed-off-by: James Almer <jamrial@gmail.com>
  Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>
  

  • [DBH] libavformat/matroska.c