[libcamera-devel] [PATCH v6 0/8] libcamera: Map multiple V4L2 formats to a single libcamera::format

[paul.elder at ideasonboard.com]

Hi Jacopo,

On Wed, Aug 03, 2022 at 01:26:32PM +0200, Jacopo Mondi via libcamera-devel wrote:
> This series addresses the requirement of mapping multiple V4L2 pixel formats
> to a single libcamera format. Specifically, it allows to map V4L2_PIX_FMT_JPEG
> and V4L2_PIX_FMT_MJPEG to libcamera::formats::MJPEG.
> 
> When testing on Pinephone I was able to capture JPEG (but not to inspect images)
> and YUYV. This time the sensor didn't fail me, and I was able to run a preview
> stream on the pinephone using the SDL backend.

This makes YVU422 work on rkisp1 \o/

Tested-by: Paul Elder <paul.elder at ideasonboard.com>

> 
> v5->v6:
> - Break-out Laurent's patch that introduces std::hash<V4L2PixelFormat>
> 
> v4->v5:
> - Use std::hash<V4L2PixelFormat> specialization
> - Address Laurent's comment on 5/6
> - Add a tiny patch for the developer guide
> 
> v3->v4:
> - Move 2/6 at the beginning and simplify it
> - Biggest change is in V4L2VideoDevice where formats are now collected in an
>   unordered_set<> requiring V4L2PixelFormat to be instrumented with an Hash
>   function object to allow it to be stored in an unordered STL container
> - Minor changes in comments/wording and Laurent's tags
> 
> v2->v3:
> - Resorted patches as suggested by Laurent
> - Remove 'multiplanar' argument in the call chain
> - Cache the V4L2VideoDevice formats at open() time
> 
> v1->v2:
> - Add a missing conversion using the video device in Simple converter
> - Map formats::MJPEG to V4L2_PIX_FMT_JPEG in v4l2 formats enumeration
> 
> Jacopo Mondi (7):
>   libcamera: formats: Reimplement V4L2 PixelFormatInfo::info()
>   libcamera: formats: Merge V4L2 single and multi formats
>   guides: pipeline handler: Remove rogue spaces
>   libcamera: v4l2_videodevice: Reintroduce toV4L2PixelFormat()
>   libcamera: v4l2_pixelformat: Return the list of V4L2 formats
>   libcamera: v4l2_videodevice: Match formats supported by the device
>   libcamera: formats: Map V4L2_PIX_FMT_JPEG to formats::MJPEG
> 
> Laurent Pinchart (1):
>   libcamera: v4l2_pixelformat: Implement std::hash specialization
> 
>  Documentation/guides/pipeline-handler.rst     |   9 +-
>  include/libcamera/internal/formats.h          |   5 +-
>  include/libcamera/internal/v4l2_pixelformat.h |  18 +-
>  include/libcamera/internal/v4l2_videodevice.h |   6 +
>  src/libcamera/formats.cpp                     | 318 ++++--------------
>  src/libcamera/pipeline/ipu3/cio2.cpp          |   2 +-
>  src/libcamera/pipeline/ipu3/imgu.cpp          |   2 +-
>  .../pipeline/raspberrypi/raspberrypi.cpp      |  34 +-
>  src/libcamera/pipeline/rkisp1/rkisp1_path.cpp |   6 +-
>  src/libcamera/pipeline/simple/converter.cpp   |  10 +-
>  src/libcamera/pipeline/simple/simple.cpp      |   4 +-
>  src/libcamera/pipeline/uvcvideo/uvcvideo.cpp  |   6 +-
>  src/libcamera/pipeline/vimc/vimc.cpp          |   8 +-
>  src/libcamera/v4l2_pixelformat.cpp            |  24 +-
>  src/libcamera/v4l2_videodevice.cpp            |  61 +++-
>  src/v4l2/v4l2_camera_proxy.cpp                |   6 +-
>  test/libtest/buffer_source.cpp                |   2 +-
>  17 files changed, 211 insertions(+), 310 deletions(-)
> 
> --
> 2.37.1
>