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

[Adam Ford]

On Thu, Nov 21, 2024 at 7:22 AM Hugues Fruchet
<hugues.fruchet at foss.st.com> wrote:
>
> Add WebP image decoding support to stateless V4L2 VP8 decoder.
>
> This have been tested on STM32MP257-EV board using GStreamer.

I want to test this on an i.MX8M Mini.  Is there a certain gstreamer
version or branch I should use, or is 1.24 sufficient?

adam
>
> 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
>
>