[libcamera-devel] [PATCH v2 08/13] py: cam_kms: support multiplanar formats

[Kieran Bingham]

Quoting Tomi Valkeinen (2022-05-17 15:33:20)
> Support multiplanar formats in the kms renderer. Tested with RPi and
> NV12.
> 
> Signed-off-by: Tomi Valkeinen <tomi.valkeinen at ideasonboard.com>
> Reviewed-by: Laurent Pinchart <laurent.pinchart at ideasonboard.com>


Reviewed-by: Kieran Bingham <kieran.bingham at ideasonboard.com>

> ---
>  src/py/cam/cam_kms.py | 13 ++++++++++---
>  1 file changed, 10 insertions(+), 3 deletions(-)
> 
> diff --git a/src/py/cam/cam_kms.py b/src/py/cam/cam_kms.py
> index ae6be277..f1844717 100644
> --- a/src/py/cam/cam_kms.py
> +++ b/src/py/cam/cam_kms.py
> @@ -10,6 +10,7 @@ FMT_MAP = {
>      'YUYV': pykms.PixelFormat.YUYV,
>      'ARGB8888': pykms.PixelFormat.ARGB8888,
>      'XRGB8888': pykms.PixelFormat.XRGB8888,
> +    'NV12': pykms.PixelFormat.NV12,
>  }
>  
>  
> @@ -133,10 +134,16 @@ class KMSRenderer:
>  
>                  for fb in ctx['allocator'].buffers(stream):
>                      w, h = cfg.size
> -                    stride = cfg.stride
> -                    fd = fb.fd(0)
> +                    fds = []
> +                    strides = []
> +                    offsets = []
> +                    for i in range(fb.num_planes):
> +                        fds.append(fb.fd(i))
> +                        strides.append(cfg.stride)
> +                        offsets.append(fb.offset(i))
> +
>                      drmfb = pykms.DmabufFramebuffer(self.card, w, h, fmt,
> -                                                    [fd], [stride], [0])
> +                                                    fds, strides, offsets)
>                      self.cam_2_drm[fb] = drmfb
>  
>                  idx += 1
> -- 
> 2.34.1
>