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Date:   Tue, 3 Mar 2020 15:35:49 +0100
From:   Neil Armstrong <narmstrong@...libre.com>
To:     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
Subject: Re: [PATCH v7 0/4] media: meson: vdec: Add compliant H264 support

On 03/03/2020 15:33, Neil Armstrong wrote:
> Hello,
> 
> This patch series aims to bring H.264 support as well as compliance update
> to the amlogic stateful video decoder driver.
> 
> The issue in the V1 patchset at [1] is solved by patch #1 following comments
> and requirements from hans. It moves the full draining & stopped state tracking
> and handling from vicodec to core v4l2-mem2mem.
> 
> The vicodec changes still passes the v4l2-utils "media-test" tests, log at [5]:
> [...]
> vicodec media controller compliance tests
> 
> Thu Jan 16 13:00:56 UTC 2020
> v4l2-compliance SHA: 7ead0e1856b89f2e19369af452bb03fd0cd16793, 64 bits
> [...]
> Summary:
> 
> Total for vicodec device /dev/media3: 7, Succeeded: 7, Failed: 0, Warnings: 0
> Total for vicodec device /dev/video13: 51, Succeeded: 51, Failed: 0, Warnings: 0
> Total for vicodec device /dev/video14: 51, Succeeded: 51, Failed: 0, Warnings: 0
> Total for vicodec device /dev/video14: 51, Succeeded: 51, Failed: 0, Warnings: 0
> Total for vicodec device /dev/video14: 51, Succeeded: 51, Failed: 0, Warnings: 0
> Total for vicodec device /dev/video14: 51, Succeeded: 51, Failed: 0, Warnings: 0
> Total for vicodec device /dev/video14: 51, Succeeded: 51, Failed: 0, Warnings: 0
> Total for vicodec device /dev/video14: 51, Succeeded: 51, Failed: 0, Warnings: 0
> 
> Final Summary: 364, Succeeded: 364, Failed: 0, Warnings: 0
> Thu Jan 16 13:02:59 UTC 2020
> 
> With this, it also passes vdec v4l2-compliance with H264 streaming on Amlogic G12A
> and Amlogic SM1 SoCs successfully.
> 
> The compliance log is:
> # v4l2-compliance --stream-from-hdr test-25fps.h264.hdr -s
> 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   : 5.5.0
> 	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/video19 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 60 buffers    
> 	test MMAP (select): OK
> 	Video Capture Multiplanar: Captured 60 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
> 
> Changes since v6 at [7]:
> - Fixed sparse warning in codec_h264.c
> - No smatch issues reported
> 
> Changes since v5 at [6]:
> - Changed name of v4l2_m2m_start/stop_streaming to v4l2_m2m_update_start/stop_streaming_state
> - Changed name of v4l2_mark_last_buf to v4l2_update_last_buf_state
> - Added comment in code to describe usage and use-case
> - Added comment in header for helpers
> - Updated vicodec with v4l2_m2m_start/stop_streaming renaming in patch 2
> - Fixes htmldoc warnings in patch 4
> 
> Changes since v4 at [5]:
> - Squashed "don't resume instantly if not streaming capture" and "fix OUTPUT buffer size configuration" fixes from maxime
> 
> Changes since v3 at [3]:
> - Fixed vicodec compliance
> - Fixed vdec compliance with v4l2 state management
> - fixed doc errors for v4l2-mem2mem.h
> 
> Changes since v2 at [2]:
> - Move full draining & stopped state tracking into core v4l2-mem2mem
> - Adapt vicodec to use the core v4l2-mem2mem draining & stopped state tracking
> 
> Changes since v1 at [1]:
> - fixed output_size is never used reported by hans
> - rebased on G12A and SM1 patches
> - added handling of qbuf after STREAMON and STOP before enought buffer queued
> 
> [1] https://lore.kernel.org/linux-media/20191007145909.29979-1-mjourdan@baylibre.com
> [2] https://lore.kernel.org/linux-media/20191126093733.32404-1-narmstrong@baylibre.com
> [3] https://lore.kernel.org/linux-media/20191209122028.13714-1-narmstrong@baylibre.com
> [4] https://people.freedesktop.org/~narmstrong/vicodec-compliance-7ead0e1856b89f2e19369af452bb03fd0cd16793-20200116.log
> [5] https://lore.kernel.org/linux-media/20200116133025.1903-1-narmstrong@baylibre.com
> [6] https://lore.kernel.org/linux-media/20200206082648.25184-1-narmstrong@baylibre.com
> [7] https://lore.kernel.org/linux-media/20200219140156.22893-1-narmstrong@baylibre.com
> 
> Maxime Jourdan (2):
>   media: meson: vdec: bring up to compliance
>   media: meson: vdec: add H.264 decoding support
> 
> Neil Armstrong (2):
>   media: v4l2-mem2mem: handle draining, stopped and next-buf-is-last
>     states
>   media: vicodec: use v4l2-mem2mem draining, stopped and
>     next-buf-is-last states handling
> 
>  drivers/media/platform/vicodec/vicodec-core.c | 162 ++----
>  drivers/media/v4l2-core/v4l2-mem2mem.c        | 221 +++++++-
>  drivers/staging/media/meson/vdec/Makefile     |   2 +-
>  drivers/staging/media/meson/vdec/codec_h264.c | 485 ++++++++++++++++++
>  drivers/staging/media/meson/vdec/codec_h264.h |  14 +
>  drivers/staging/media/meson/vdec/esparser.c   |  58 +--
>  drivers/staging/media/meson/vdec/vdec.c       |  90 ++--
>  drivers/staging/media/meson/vdec/vdec.h       |  14 +-
>  .../staging/media/meson/vdec/vdec_helpers.c   |  88 ++--
>  .../staging/media/meson/vdec/vdec_helpers.h   |   6 +-
>  .../staging/media/meson/vdec/vdec_platform.c  |  71 +++
>  include/media/v4l2-mem2mem.h                  | 133 +++++
>  12 files changed, 1114 insertions(+), 230 deletions(-)
>  create mode 100644 drivers/staging/media/meson/vdec/codec_h264.c
>  create mode 100644 drivers/staging/media/meson/vdec/codec_h264.h
> 

Forgot to keep:

Tested on meson-sm1-sei610.

Tested-by: Kevin Hilman <khilman@...libre.com>

from v6.

Neil

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