(in text this time, sorry)
Le vendredi 25 mai 2018 à 16:53 -0700, Steve Longerbeam a écrit :
> Add a macro that returns true if the given field type is
> 'sequential',
> that is, the data is transmitted, or exists in memory, as all top
> field
> lines followed by all bottom field lines, or vice-versa.
>
> Signed-off-by: Steve Longerbeam <steve_longerbeam@xxxxxxxxxx>
> ---
> include/uapi/linux/videodev2.h | 4 ++++
> 1 file changed, 4 insertions(+)
>
> diff --git a/include/uapi/linux/videodev2.h
> b/include/uapi/linux/videodev2.h
> index 600877b..408ee96 100644
> --- a/include/uapi/linux/videodev2.h
> +++ b/include/uapi/linux/videodev2.h
> @@ -126,6 +126,10 @@ enum v4l2_field {
> (field) == V4L2_FIELD_INTERLACED_BT ||\
> (field) == V4L2_FIELD_SEQ_TB ||\
> (field) == V4L2_FIELD_SEQ_BT)
> +#define V4L2_FIELD_IS_SEQUENTIAL(field) \
> + ((field) == V4L2_FIELD_SEQ_TB ||\
> + (field) == V4L2_FIELD_SEQ_BT ||\
> + (field) == V4L2_FIELD_ALTERNATE)
No, alternate has no place here, in alternate mode each buffers have
only one field.
> #define V4L2_FIELD_HAS_T_OR_B(field) \
> ((field) == V4L2_FIELD_BOTTOM (||\
> (field) == V4L2_FIELD_TOP ||\
