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Message-ID: <1a570c6e07fcd0d0ddc401a3640dfca07f22304d.camel@ndufresne.ca>
Date: Thu, 05 Dec 2019 13:46:24 -0500
From: Nicolas Dufresne <nicolas@...fresne.ca>
To: Neil Armstrong <narmstrong@...libre.com>, mchehab@...nel.org,
hans.verkuil@...co.com
Cc: linux-media@...r.kernel.org, linux-amlogic@...ts.infradead.org,
linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
Stanimir Varbanov <stanimir.varbanov@...aro.org>
Subject: Re: [PATCH 0/5] media: meson: vdec: Add VP9 decoding support
Le jeudi 05 décembre 2019 à 16:49 +0100, Neil Armstrong a écrit :
> On 05/12/2019 16:42, Nicolas Dufresne wrote:
> > Hi Neil,
> >
> > Le jeudi 05 décembre 2019 à 10:24 +0100, Neil Armstrong a écrit :
> > > Hello,
> > >
> > > This patchset aims to bring VP9 decoding support to Amlogic GXL, G12A & SM1
> > > platforms for the amlogic stateful video decoder driver.
> > >
> > > With this, it passes v4l2-compliance with streaming on Amlogic G12A and
> > > Amlogic SM1 SoCs successfully using the stream at [1] with a fixed
> > > pyv4l2compliance script for VP9 at [2].
> > >
> > > The original script kept the IVF headers in the stream, confusing the
> > > decoder. The fixed script only extracts the payload from the IVF container.
> > >
> > > The decoder has been tested using the Google CTS TestVectorsIttiam VP9 yuv420
> > > samples, passing 82 resolutions test streams, with 13 fails by pixel
> > > differences and 3 timeouts.
> >
> > How do you handle resolution changes on delta frames ? It's a bit of a
> > challenge since the reference frames are not at the same resolution as
> > the frames to be decoded. This breaks the assumption for the resolution
> > changes mechanism as described in the spec.
>
> I don't have a lot of experience on the subject, but in the vendor implementation,
> they store the resolution along the reference frames and when loading all the
> reference frames to the HW, the original resolution is also loaded.
> But we don't handle it.
>
> > On stateless side, Boris is introducing DESTROY_BUFS, so we can free
> > the references when they are not used anymore. But the reference are
> > managed by userspace and are not queued. While on stateful side so far,
> > it was assumed that references are queued, and the semantic of S_FMT is
> > that it must apply to the entire set of queued buffer.
>
> yes
>
> > I think most streams will work and won't use this feature, but I'm
> > worried that writing a compliant VP9 decoder is currently not possible.
>
> Indeed, but I don't have a clear enough view on the subject, and it doesn't seem
> I have any test stream with such feature.
https://www.webmproject.org/vp9/levels/
I believe in the performance suite, the FRM_RESIZE sample is what
should exercise this.
>
> Neil
>
> > > This patchset depends on :
> > > - G12A enablement at [3]
> > > - SM1 enablement at [4]
> > > - H.264 and compliance at [5]
> > >
> > > [1] https://github.com/superna9999/pyv4l2compliance/raw/tests/output/Jellyfish_1080_10s_5MB.vp9.hdr
> > > [2] https://github.com/superna9999/pyv4l2compliance
> > > [3] https://lore.kernel.org/linux-media/20191120111430.29552-1-narmstrong@baylibre.com
> > > [4] https://lore.kernel.org/linux-media/20191121101429.23831-1-narmstrong@baylibre.com
> > > [5] https://lore.kernel.org/linux-media/20191126093733.32404-1-narmstrong@baylibre.com
> > >
> > > The compliance log is:
> > > # v4l2-compliance --stream-from-hdr Jellyfish_1080_10s_5MB.vp9.hdr -s 200
> > > v4l2-compliance SHA: 7ead0e1856b89f2e19369af452bb03fd0cd16793, 64 bits
> > >
> > > Compliance test for meson-vdec device /dev/video0:
> > >
> > > Driver Info:
> > > Driver name : meson-vdec
> > > Card type : Amlogic Video Decoder
> > > Bus info : platform:meson-vdec
> > > Driver version : 5.4.0
> > > Capabilities : 0x84204000
> > > Video Memory-to-Memory Multiplanar
> > > Streaming
> > > Extended Pix Format
> > > Device Capabilities
> > > Device Caps : 0x04204000
> > > Video Memory-to-Memory Multiplanar
> > > Streaming
> > > Extended Pix Format
> > > Detected Stateful Decoder
> > >
> > > Required ioctls:
> > > test VIDIOC_QUERYCAP: OK
> > >
> > > Allow for multiple opens:
> > > test second /dev/video0 open: OK
> > > test VIDIOC_QUERYCAP: OK
> > > test VIDIOC_G/S_PRIORITY: OK
> > > test for unlimited opens: OK
> > >
> > > Debug ioctls:
> > > test VIDIOC_DBG_G/S_REGISTER: OK (Not Supported)
> > > test VIDIOC_LOG_STATUS: OK (Not Supported)
> > >
> > > Input ioctls:
> > > test VIDIOC_G/S_TUNER/ENUM_FREQ_BANDS: OK (Not Supported)
> > > test VIDIOC_G/S_FREQUENCY: OK (Not Supported)
> > > test VIDIOC_S_HW_FREQ_SEEK: OK (Not Supported)
> > > test VIDIOC_ENUMAUDIO: OK (Not Supported)
> > > test VIDIOC_G/S/ENUMINPUT: OK (Not Supported)
> > > test VIDIOC_G/S_AUDIO: OK (Not Supported)
> > > Inputs: 0 Audio Inputs: 0 Tuners: 0
> > >
> > > Output ioctls:
> > > test VIDIOC_G/S_MODULATOR: OK (Not Supported)
> > > test VIDIOC_G/S_FREQUENCY: OK (Not Supported)
> > > test VIDIOC_ENUMAUDOUT: OK (Not Supported)
> > > test VIDIOC_G/S/ENUMOUTPUT: OK (Not Supported)
> > > test VIDIOC_G/S_AUDOUT: OK (Not Supported)
> > > Outputs: 0 Audio Outputs: 0 Modulators: 0
> > >
> > > Input/Output configuration ioctls:
> > > test VIDIOC_ENUM/G/S/QUERY_STD: OK (Not Supported)
> > > test VIDIOC_ENUM/G/S/QUERY_DV_TIMINGS: OK (Not Supported)
> > > test VIDIOC_DV_TIMINGS_CAP: OK (Not Supported)
> > > test VIDIOC_G/S_EDID: OK (Not Supported)
> > >
> > > Control ioctls:
> > > test VIDIOC_QUERY_EXT_CTRL/QUERYMENU: OK
> > > test VIDIOC_QUERYCTRL: OK
> > > test VIDIOC_G/S_CTRL: OK
> > > test VIDIOC_G/S/TRY_EXT_CTRLS: OK
> > > test VIDIOC_(UN)SUBSCRIBE_EVENT/DQEVENT: OK
> > > test VIDIOC_G/S_JPEGCOMP: OK (Not Supported)
> > > Standard Controls: 2 Private Controls: 0
> > >
> > > Format ioctls:
> > > test VIDIOC_ENUM_FMT/FRAMESIZES/FRAMEINTERVALS: OK
> > > test VIDIOC_G/S_PARM: OK (Not Supported)
> > > test VIDIOC_G_FBUF: OK (Not Supported)
> > > test VIDIOC_G_FMT: OK
> > > test VIDIOC_TRY_FMT: OK
> > > test VIDIOC_S_FMT: OK
> > > test VIDIOC_G_SLICED_VBI_CAP: OK (Not Supported)
> > > test Cropping: OK (Not Supported)
> > > test Composing: OK (Not Supported)
> > > test Scaling: OK (Not Supported)
> > >
> > > Codec ioctls:
> > > test VIDIOC_(TRY_)ENCODER_CMD: OK (Not Supported)
> > > test VIDIOC_G_ENC_INDEX: OK (Not Supported)
> > > test VIDIOC_(TRY_)DECODER_CMD: OK
> > >
> > > Buffer ioctls:
> > > test VIDIOC_REQBUFS/CREATE_BUFS/QUERYBUF: OK
> > > test VIDIOC_EXPBUF: OK
> > > test Requests: OK (Not Supported)
> > >
> > > Test input 0:
> > >
> > > Streaming ioctls:
> > > test read/write: OK (Not Supported)
> > > test blocking wait: OK
> > > Video Capture Multiplanar: Captured 200 buffers
> > > test MMAP (select): OK
> > > Video Capture Multiplanar: Captured 200 buffers
> > > test MMAP (epoll): OK
> > > test USERPTR (select): OK (Not Supported)
> > > test DMABUF: Cannot test, specify --expbuf-device
> > >
> > > Total for meson-vdec device /dev/video0: 49, Succeeded: 49, Failed: 0, Warnings: 0
> > >
> > > Maxime Jourdan (4):
> > > media: meson: vdec: add helpers for lossless framebuffer compression
> > > buffers
> > > media: meson: vdec: add common HEVC decoder support
> > > media: meson: vdec: add VP9 input support
> > > media: meson: vdec: add VP9 decoder support
> > >
> > > Neil Armstrong (1):
> > > media: meson: vdec: align stride on 32 bytes
> > >
> > > drivers/staging/media/meson/vdec/Makefile | 4 +-
> > > .../media/meson/vdec/codec_hevc_common.c | 285 ++++
> > > .../media/meson/vdec/codec_hevc_common.h | 77 ++
> > > drivers/staging/media/meson/vdec/codec_vp9.c | 1192 +++++++++++++++++
> > > drivers/staging/media/meson/vdec/codec_vp9.h | 13 +
> > > drivers/staging/media/meson/vdec/esparser.c | 142 +-
> > > drivers/staging/media/meson/vdec/hevc_regs.h | 218 +++
> > > drivers/staging/media/meson/vdec/vdec.c | 10 +-
> > > .../staging/media/meson/vdec/vdec_helpers.c | 31 +-
> > > .../staging/media/meson/vdec/vdec_helpers.h | 4 +
> > > drivers/staging/media/meson/vdec/vdec_hevc.c | 231 ++++
> > > drivers/staging/media/meson/vdec/vdec_hevc.h | 13 +
> > > .../staging/media/meson/vdec/vdec_platform.c | 38 +
> > > 13 files changed, 2245 insertions(+), 13 deletions(-)
> > > create mode 100644 drivers/staging/media/meson/vdec/codec_hevc_common.c
> > > create mode 100644 drivers/staging/media/meson/vdec/codec_hevc_common.h
> > > create mode 100644 drivers/staging/media/meson/vdec/codec_vp9.c
> > > create mode 100644 drivers/staging/media/meson/vdec/codec_vp9.h
> > > create mode 100644 drivers/staging/media/meson/vdec/hevc_regs.h
> > > create mode 100644 drivers/staging/media/meson/vdec/vdec_hevc.c
> > > create mode 100644 drivers/staging/media/meson/vdec/vdec_hevc.h
> > >
>
>
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