Re: [PATCH 0/5] media: meson: vdec: Add VP9 decoding support

[Nicolas Dufresne <nicolas@ndufresne.ca>]

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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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