[FFmpeg-devel] [PATCH 2/3] libswscale: add output support for AV_PIX_FMT_GBRAPF32

[Mark Reid]

On Thu, Apr 30, 2020 at 7:59 AM Michael Niedermayer <michael at niedermayer.cc>
wrote:

> On Wed, Apr 29, 2020 at 02:49:35PM -0700, Mark Reid wrote:
> > On Wed, Apr 29, 2020 at 2:22 PM Michael Niedermayer
> <michael at niedermayer.cc>
> > wrote:
> >
> > > On Wed, Apr 29, 2020 at 11:19:56PM +0200, Michael Niedermayer wrote:
> > > > On Tue, Apr 28, 2020 at 08:02:34PM -0700, mindmark at gmail.com wrote:
> > > > > From: Mark Reid <mindmark at gmail.com>
> > > > >
> > > > > ---
> > > > >  libswscale/output.c                      | 82
> ++++++++++++++++++++++++
> > > > >  libswscale/slice.c                       | 28 ++++----
> > > > >  libswscale/swscale_unscaled.c            | 33 ++++++++++
> > > > >  libswscale/utils.c                       |  8 +--
> > > > >  tests/ref/fate/filter-pixdesc-gbrapf32be |  1 +
> > > > >  tests/ref/fate/filter-pixdesc-gbrapf32le |  1 +
> > > > >  tests/ref/fate/filter-pixdesc-gbrpf32be  |  1 +
> > > > >  tests/ref/fate/filter-pixdesc-gbrpf32le  |  1 +
> > > > >  tests/ref/fate/filter-pixfmts-copy       |  4 ++
> > > > >  tests/ref/fate/filter-pixfmts-crop       |  4 ++
> > > > >  tests/ref/fate/filter-pixfmts-field      |  4 ++
> > > > >  tests/ref/fate/filter-pixfmts-fieldorder |  4 ++
> > > > >  tests/ref/fate/filter-pixfmts-hflip      |  4 ++
> > > > >  tests/ref/fate/filter-pixfmts-il         |  4 ++
> > > > >  tests/ref/fate/filter-pixfmts-null       |  4 ++
> > > > >  tests/ref/fate/filter-pixfmts-scale      |  4 ++
> > > > >  tests/ref/fate/filter-pixfmts-transpose  |  4 ++
> > > > >  tests/ref/fate/filter-pixfmts-vflip      |  4 ++
> > > > >  18 files changed, 180 insertions(+), 15 deletions(-)
> > > > >  create mode 100644 tests/ref/fate/filter-pixdesc-gbrapf32be
> > > > >  create mode 100644 tests/ref/fate/filter-pixdesc-gbrapf32le
> > > > >  create mode 100644 tests/ref/fate/filter-pixdesc-gbrpf32be
> > > > >  create mode 100644 tests/ref/fate/filter-pixdesc-gbrpf32le
> > > >
> > > > Fails on qemu MIPS
> > > >
> > > > --- src/tests/ref/fate/filter-pixfmts-scale     2020-04-29
> > > 22:18:07.326122866 +0200
> > > > +++ tests/data/fate/filter-pixfmts-scale        2020-04-29
> > > 23:06:16.167950113 +0200
> > > > @@ -25,8 +25,8 @@
> > > >  gbrap12le           bb1ba1c157717db3dd612a76d38a018e
> > > >  gbrap16be           c72b935a6e57a8e1c37bff08c2db55b1
> > > >  gbrap16le           13eb0e62b1ac9c1c86c81521eaefab5f
> > > > -gbrapf32be          e6abe67df7fdd5f5dc5db7d852e50954
> > > > -gbrapf32le          4d3043b206f7053f7d8d5672f430d680
> > > > +gbrapf32be          982d646dc5b2dc718c65fa2a439828f5
> > > > +gbrapf32le          f1ffa56441e29aab5e1fd982337bb8ac
> > > >  gbrp                dc3387f925f972c61aae7eb23cdc19f0
> > > >  gbrp10be            0277d4c3a8498d75e2783fb81379e481
> > > >  gbrp10le            f3d70f8ab845c3c9b8f7452e4a6e285a
> > > > Test filter-pixfmts-scale failed. Look at
> > > tests/data/fate/filter-pixfmts-scale.err for details.
> > > > src/tests/Makefile:254: recipe for target 'fate-filter-pixfmts-scale'
> > > failed
> > > > make: *** [fate-filter-pixfmts-scale] Error 1
> > > > TEST    h264-conformance-frext-pph422i5_panasonic_a
> > > > TEST    h264-conformance-frext-pph422i6_panasonic_a
> > > > TEST    h264-conformance-frext-pph422i7_panasonic_a
> > > > TEST    h264-conformance-hcbp2_hhi_a
> > > > TEST    h264-conformance-hcmp1_hhi_a
> > > >
> > > > I also think for float, tests based on comparission instead of
> checksums
> > > > would allow more use of floats in the computations which would
> > > > differ rounding wise between platforms
> > >
> > > and the 2 sws patches would otherwise be ok if they didnt break any
> tests
> > >
> > >
> > I was worried about the test with float, and tried to limiting the number
> > of float operations, but guess it's not enough.
>
> > I haven't looked yet, but is there anywhere you could point me to doing
> > a comparison based test?
>
> anything float based needs a comparission or luck ...
> audio tests using "oneoff/stddev" in fate for example
> checkasm also checks some float code with comparissions
>
> not sure how to best integrate this here ...
>
> thx
>

Thanks! I'll check those out. I came up with some other ideas to try too
that I think might work. Its a tricky problem for sure!


>
> [...]
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