linux-kernel - Re: [PATCH v1 0/9] AV1 stateless decoder for RK3588

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Date:   Mon, 19 Dec 2022 15:22:50 -0500
From:   Nicolas Dufresne <nicolas@...fresne.ca>
To:     Benjamin Gaignard <benjamin.gaignard@...labora.com>,
        ezequiel@...guardiasur.com.ar, p.zabel@...gutronix.de,
        mchehab@...nel.org, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, heiko@...ech.de,
        daniel.almeida@...labora.com, nicolas.dufresne@...labora.co.uk
Cc:     linux-media@...r.kernel.org, linux-rockchip@...ts.infradead.org,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org, kernel@...labora.com
Subject: Re: [PATCH v1 0/9] AV1 stateless decoder for RK3588

Le lundi 19 décembre 2022 à 16:56 +0100, Benjamin Gaignard a écrit :
> This series implement AV1 stateless decoder for RK3588 SoC.
> The harware support 8 and 10 bits bitstreams up to 7680x4320.
> AV1 feature like film grain or scaling are done by the postprocessor.
> The driver can produce NV12_4L4 and NV12 pixel formats.
> A native 10bits NV12_4L4 format is possible but need more investigation
> to be completly documented and enabled.
> 
> It is based on Daniel's "[RFC,v3] media: Add AV1 uAPI" [1] patches and
> Sebastian's device-tree patches for RK3588.
> 
> The full branch can be found here:
> https://gitlab.collabora.com/linux/for-upstream/-/commits/rk3588_av1_decoder_v1
> 
> Fluster score is: 151/239 while testing AV1-TEST-VECTORS with GStreamer-AV1-V4L2SL-Gst1.0.
> The failing tests are:
> - 10bits bitstream because 10bits output formats aren't yet implemented.
> - the 2 tests with 2 spatial layers: few errors in luma/chroma values
> - tests with resolution < hardware limit (64x64)

Its nice to note that we tested 10bit support by forcing P010 output from the
postprocessor, with all bitstream working except for filmgrain. Hopefully we'll
get 10bit properly sorted out, but we don't think the uAPI have any issues
specifically for 10bit (Mediatek driver does not support 10bit or filmgrain).

> 
> Benjamin
> 
> Benjamin Gaignard (9):
>   dt-bindings: media: rockchip-vpu: Add rk3588 vpu compatible
>   media: verisilicon: Add AV1 decoder mode and controls
>   media: verisilicon: Save bit depth for AV1 decoder
>   media: verisilicon: Check AV1 bitstreams bit depth
>   media: verisilicon: Compute motion vectors size for AV1 frames
>   media: verisilicon: Add AV1 entropy helpers
>   media: verisilicon: Add Rockchip AV1 decoder
>   media: verisilicon: Add film grain feature to AV1 driver
>   media: verisilicon: Enable AV1 decoder on rk3588
> 
>  .../bindings/media/rockchip-vpu.yaml          |    1 +
>  drivers/media/platform/verisilicon/Makefile   |    3 +
>  drivers/media/platform/verisilicon/hantro.h   |    5 +
>  .../media/platform/verisilicon/hantro_drv.c   |   54 +
>  .../media/platform/verisilicon/hantro_hw.h    |  102 +
>  .../platform/verisilicon/hantro_postproc.c    |    3 +
>  .../media/platform/verisilicon/hantro_v4l2.c  |    5 +
>  .../verisilicon/rockchip_av1_entropymode.c    | 4536 +++++++++++++++++
>  .../verisilicon/rockchip_av1_entropymode.h    |  272 +
>  .../verisilicon/rockchip_av1_filmgrain.c      |  401 ++
>  .../verisilicon/rockchip_av1_filmgrain.h      |   36 +
>  .../verisilicon/rockchip_vpu981_hw_av1_dec.c  | 2280 +++++++++
>  .../verisilicon/rockchip_vpu981_regs.h        |  477 ++
>  .../platform/verisilicon/rockchip_vpu_hw.c    |  116 +
>  14 files changed, 8291 insertions(+)
>  create mode 100644 drivers/media/platform/verisilicon/rockchip_av1_entropymode.c
>  create mode 100644 drivers/media/platform/verisilicon/rockchip_av1_entropymode.h
>  create mode 100644 drivers/media/platform/verisilicon/rockchip_av1_filmgrain.c
>  create mode 100644 drivers/media/platform/verisilicon/rockchip_av1_filmgrain.h
>  create mode 100644 drivers/media/platform/verisilicon/rockchip_vpu981_hw_av1_dec.c
>  create mode 100644 drivers/media/platform/verisilicon/rockchip_vpu981_regs.h
>