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  1. 23 Jan, 2020 1 commit
    • Frank Barchard's avatar
      RAWToJ400 and RGBToJ400 use 2 step row function for Intel. RAWToJ400 Was 3996… · 3db22ebc
      Frank Barchard authored 
      RAWToJ400 and RGBToJ400 use 2 step row function for Intel. RAWToJ400 Was 3996 ms, now 3309.  20.7% faster.

Call a row function for each row, based on ARGBToI400 code.
But implement row functions as 2 step conversion.  Adds the
row functions:
RAWToYJ, RGBToYJ, SSSE3 and AVX2 versions, and Any versions.
The smaller row buffer is more cache friendly on large images.

The max cache size can be configured, and is currently:
// Maximum temporary width for wrappers to process at a time, in pixels.
And the row buffer is
  SIMD_ALIGNED(uint8_t row[MAXTWIDTH * 4]);
So 8192 bytes are used for the row buffer, leaving the rest for source
and destination buffers.

blaze-bin/third_party/libyuv/libyuv_test '--gunit_filter=*R*To?400_Opt' --libyuv_width=3600 --libyuv_height=2500 --libyuv_repeat=1000 --libyuv_flags=-1 --libyuv_cpu_info=-1 | sortms

Was
RAWToJ400_Opt (3996 ms)
ARGBToI400_Opt (3964 ms)
RGB24ToJ400_Opt (3960 ms)
ARGBToJ400_Opt (3909 ms)
RGBAToJ400_Opt (3885 ms)

Now
ARGBToJ400_Opt (4091 ms)
ARGBToI400_Opt (3936 ms)
RGBAToJ400_Opt (3428 ms)
RGB24ToJ400_Opt (3324 ms)
RAWToJ400_Opt (3309 ms)

Bug: libyuv:854, b/147753855
Change-Id: Ieb65fbda94e812c737f4c3c74107354b73c4bcd2
Reviewed-on: https://chromium-review.googlesource.com/c/libyuv/libyuv/+/2016203Reviewed-by: 's avatarrichard winterton <rrwinterton@gmail.com>
Commit-Queue: Frank Barchard <fbarchard@chromium.org>
      3db22ebc
  3. 16 Jan, 2020 1 commit
    • Frank Barchard's avatar
      RAWToJ400 for big endian RGB to grey scale. · 1cea4235
      Frank Barchard authored 
      On Pixel 3
Was
BM_ConvertToGray/1280/720/3                        2360958 ns      2334984 ns         2999
BM_ConvertToGray/1279/721/3                        2360289 ns      2334329 ns         2994
BM_ConvertGrayTensorflowCoefficients/1280/720/3    2983296 ns      2947113 ns         2259
BM_ConvertGrayTensorflowCoefficients/1279/721/3    2871205 ns      2835359 ns         2170

Now
BM_ConvertToGray/1280/720/3                        2358469 ns      2334068 ns         2997
BM_ConvertToGray/1279/721/3                        2364584 ns      2336892 ns         2995
BM_ConvertGrayTensorflowCoefficients/1280/720/3     281312 ns       278244 ns        25170
BM_ConvertGrayTensorflowCoefficients/1279/721/3     351310 ns       347229 ns        20217

BUG=libyuv:854

Change-Id: If2192affc2d3219e0fb824737d75b9374a25d709
Reviewed-on: https://chromium-review.googlesource.com/c/libyuv/libyuv/+/2003236
Commit-Queue: Frank Barchard <fbarchard@chromium.org>
Reviewed-by: 's avatarrichard winterton <rrwinterton@gmail.com>
      1cea4235
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