Thanks,
Adrian

On Wed, 18 Mar 2020, Philipp Zabel <p.zabel@pengutronix.de> wrote:
> Hi,
>
> the JPEG header parser is updated to accept up to four components,
> baseline and extended-sequential DCT encoded images, 8-bit and 12-bit
> precision, as well as 8-bit and 16-bit quantization tables. As a
> consequence, all drivers will have to check the number of components,
> precision, and quantization table lengths.
>
> I have not yet added support parsing the Adobe APP14 headers to
> determine the color encoding, as it is unclear to me how it could be
> used to signal RGBA components - for 4-component images it is defined
> to disambiguate between CMYK and YCCK encodings. This is implemented
> in libjpeg.
> Patching the header data in place to normalize the component identifiers
> is not part of the parser and will be added in a separate patch.
>
> For now the rcar_jpu, s5p-jpeg and mtk-jpeg conversions are dropped.
> Instead, a few CODA fixes were added that should avoid alignment issues
> with odd-sized JPEG images and that stop tricking GStreamer into
> negotiating NV12 and then switching to YUV420 instead in S_FMT.
>
> regards
> Philipp
>
> Philipp Zabel (6):
>   media: coda: round up decoded buffer size for all codecs
>   media: add v4l2 JPEG helpers
>   media: coda: jpeg: add CODA960 JPEG decoder support
>   media: coda: split marking last meta into helper function
>   media: coda: mark last capture buffer
>   media: coda: lock capture queue wakeup against decoder stop command
>
>  drivers/media/platform/Kconfig            |   1 +
>  drivers/media/platform/coda/coda-common.c | 188 ++++++-
>  drivers/media/platform/coda/coda-jpeg.c   | 572 ++++++++++++++++++++
>  drivers/media/platform/coda/coda.h        |  10 +-
>  drivers/media/v4l2-core/Kconfig           |   4 +
>  drivers/media/v4l2-core/Makefile          |   2 +
>  drivers/media/v4l2-core/v4l2-jpeg.c       | 632 ++++++++++++++++++++++
>  include/media/v4l2-jpeg.h                 | 135 +++++
>  8 files changed, 1519 insertions(+), 25 deletions(-)
>  create mode 100644 drivers/media/v4l2-core/v4l2-jpeg.c
>  create mode 100644 include/media/v4l2-jpeg.h
>
> -- 
> 2.20.1