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

[Hugues FRUCHET]

Hi Adam,

On 11/24/24 04:09, Adam Ford wrote:
> 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?


The corresponding GStreamer code has been pushed here (v4l2slwebpdec):
https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/7939

BR,
Hugues.

> 
> 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
>>
>>