linux-kernel - [PATCH v3 0/3] Add WebP support to hantro decoder

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Message-ID: <20241121131904.261230-1-hugues.fruchet@foss.st.com>
Date: Thu, 21 Nov 2024 14:19:01 +0100
From: Hugues Fruchet <hugues.fruchet@...s.st.com>
To: Mauro Carvalho Chehab <mchehab@...nel.org>,
        Ezequiel Garcia
	<ezequiel@...guardiasur.com.ar>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        Alexandre Torgue <alexandre.torgue@...s.st.com>,
        Hugues Fruchet
	<hugues.fruchet@...s.st.com>,
        Sebastian Fricke
	<sebastian.fricke@...labora.com>,
        Ricardo Ribalda <ribalda@...omium.org>,
        Erling Ljunggren <hljunggr@...co.com>,
        Hans Verkuil <hverkuil@...all.nl>,
        Laurent Pinchart <laurent.pinchart@...asonboard.com>,
        Sakari Ailus
	<sakari.ailus@...ux.intel.com>,
        Jacopo Mondi <jacopo.mondi@...asonboard.com>,
        Jean-Michel Hautbois <jeanmichel.hautbois@...asonboard.com>,
        Benjamin
 Gaignard <benjamin.gaignard@...labora.com>,
        <linux-media@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-rockchip@...ts.infradead.org>,
        <linux-stm32@...md-mailman.stormreply.com>,
        <linux-arm-kernel@...ts.infradead.org>
Subject: [PATCH v3 0/3] Add WebP support to hantro decoder

Add WebP image decoding support to stateless V4L2 VP8 decoder.

This have been tested on STM32MP257-EV board using GStreamer.

Simple basic test:
$> wget https://www.gstatic.com/webp/gallery/1.webp
$> gst-launch-1.0 filesrc location= 1.webp ! typefind ! v4l2slwebpdec ! imagefreeze num-buffers=20 ! waylandsink fullscreen=true

Slideshow of a set of WebP pictures and WebM video files:
$> wget https://www.gstatic.com/webp/gallery/2.webp
$> wget https://www.gstatic.com/webp/gallery/3.webp
$> wget https://www.gstatic.com/webp/gallery/4.webp
$> wget https://www.gstatic.com/webp/gallery/5.webp
$> wget https://samplemedia.linaro.org/VP8/big_buck_bunny_480p_VP8_VORBIS_25fps_1900K_short.WebM
$> gst-play-1.0 *.webp *.webm *.WebM --wait-on-eos
<hit key ">" to display next file >

Large WebP image > 16777215 (size > 2^24)
$> gst-launch-1.0 fakesrc num-buffers=1 format=4 do-timestamp=true filltype=3 sizetype=2 sizemax=25165824 blocksize=25165824 ! video/x-raw, format=I420, width=4096, height=3072, framerate=1/1 ! webpenc quality=100 ! filesink location=4096x3072_HQ_random.webp
$> ls -l 4096x3072_HQ_random.webp
[...] 16877404 Nov 20 11:40 4096x3072_HQ_random.webp
$> gst-launch-1.0 filesrc location= 4096x3072_HQ_random.webp blocksize=16876610 ! image/webp, width=1, height=1, framerate=0/1 ! v4l2slwebpdec ! imagefreeze num-buffers=20 ! waylandsink fullscreen=true

Large WebP image decoding using post-processor is untested because of lack
of hardware support on this platform, nevertheless support is provided in
this serie for further testing on another platform having post-processor
support.

===========
= history =
===========
version 3:
   - Fix remarks from Nicolas Dufresne:
    - Document constraint about key frame only for WebP
    - Fix rebase issue
   - Fix typo detected by Diederik de Haas

version 2:
   - Fix remarks from Nicolas Dufresne:
    - Use bytesperline helper to compute chroma size
    - Introduce a new explicit WEBP frame compressed format
      instead of relying on VP8 + WebP flag
    - 4K support in both decoder and post-proc

version 1:
  - Initial submission

Hugues Fruchet (3):
  media: uapi: add WebP uAPI
  media: verisilicon: add WebP decoding support
  media: verisilicon: postproc: 4K support

 .../userspace-api/media/v4l/biblio.rst          |  9 +++++++++
 .../media/v4l/pixfmt-compressed.rst             | 17 +++++++++++++++++
 drivers/media/platform/verisilicon/hantro.h     |  2 ++
 .../media/platform/verisilicon/hantro_g1_regs.h |  3 ++-
 .../platform/verisilicon/hantro_g1_vp8_dec.c    | 14 ++++++++++++++
 .../platform/verisilicon/hantro_postproc.c      |  6 +++++-
 .../media/platform/verisilicon/hantro_v4l2.c    |  2 ++
 .../platform/verisilicon/stm32mp25_vpu_hw.c     | 17 +++++++++++++++--
 drivers/media/v4l2-core/v4l2-ioctl.c            |  1 +
 include/uapi/linux/videodev2.h                  |  1 +
 10 files changed, 68 insertions(+), 4 deletions(-)

-- 
2.25.1