[FFmpeg-devel] [PATCH 0/6] [v2] sse2/avx functions for 8-bit simple idct

James Darnley jdarnley at obe.tv
Thu Jun 15 16:34:20 EEST 2017

After a lot of work by all involved this is the latest patch set.  This includes
the results of Ronald's work: rounding, minor coeff differences, "DC only hack".

I need a proper term for this "DC only hack" because it is not DC only.  It is
for the lowest frequency of each row.

I squashed all 3 functions together because it is not correct to use only some
of them due to the differences in permutation required by these and the C/MMX

I would appreciate it if people could run the new fate test
(fate-idct-simpleauto) on ARM neon and armv5te.  No other platforms use their
own functions for simpleauto.

I might follow this with a patch to cleanup idctdsp_init.c

James Darnley (6):
  fate: add test of -idct simpleauto
  avcodec/x86: cleanup simple_idct10
  avcodec/x86: modify simple_idct10 macros to add an action paramter
  avcodec/x86: allow future 8-bit simple idct to use slightly different
  avcodec/x86: allow future 8-bit simple idct to have "DC only hack"
  avcodec/x86: add an 8-bit simple IDCT function based on the x86-64
    high depth functions

 libavcodec/tests/x86/dct.c                |   2 +
 libavcodec/x86/idctdsp_init.c             |  23 ++++
 libavcodec/x86/proresdsp.asm              |  22 ++--
 libavcodec/x86/simple_idct.h              |   9 ++
 libavcodec/x86/simple_idct10.asm          | 139 +++++++++++++++++++++---
 libavcodec/x86/simple_idct10_template.asm | 174 +++++++++++++++++++-----------
 tests/fate/video.mak                      |   3 +
 tests/ref/fate/idct-simpleauto            |  27 +++++
 8 files changed, 312 insertions(+), 87 deletions(-)
 create mode 100644 tests/ref/fate/idct-simpleauto


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