[PATCH 1/2] v4l2: add all printings to print_v4l2_format

Dmitry V. Levin ldv at altlinux.org
Wed Apr 12 01:15:28 UTC 2017


On Mon, Apr 10, 2017 at 01:45:01PM +0300, Edgar Kaziahmedov wrote:
> * v4l2.c (print_v4l2_format_fmt): Add decoding for the remaining
> V4L2_BUF_TYPEs, add 'struct tcb' arg as print_array using.
> (print_v4l2_clip): New function to print the clips field in case
> of the overlay type buf
> (print_v4l2_format): Add processing of the returned value of
> the print_v4l2_format_fmt.

* v4l2.c: Include "xlat/v4l2_vbi_flags.h" and "xlat/v4l2_sliced_flags.h".
(struct_v4l2_clip): New typedef.  Mpersify it.
(print_v4l2_clip): New function.
(print_v4l2_format_fmt): Use it.  Add struct tcb argument.  Implement
decoding of the remaining V4L2_BUF_TYPE_* types.

The last sentence would be a better alternative for the subject of this
commit.

> * xlat/v4l2_vbi_flags.in: Add V4L2_VBI_UNSYNC, V4L2_VBI_INTERLACED
> introduced by linux kernel commit v2.6.12-rc2^0.

grammar: add something and something else.

In fact, they were defined in the first commit that introduced v4l2
in the kernel, i.e. v2.5.46~39^2~23^2~4.

> Add V4L2_VBI_ITU_525_F1_START, V4L2_VBI_ITU_525_F2_START,
> V4L2_VBI_ITU_625_F1_START, V4L2_VBI_ITU_625_F2_START introduced by
> linux kernel commit v3.17-rc1~112^2~217.

grammar: add one, two, and three (note the comma before "and").

> * xlat/v4l2_sliced_flags.in: Add V4L2_SLICED_TELETEXT_B, V4L2_SLICED_VPS,
> V4L2_SLICED_CAPTION_525, V4L2_SLICED_WSS_625, V4L2_SLICED_VBI_525,
> V4L2_SLICED_VBI_625 introduced by linux kernel commit v2.6.14-rc2~64.

Likewise.

Actually, there is no need to list them all, the tradition of adding
new files is simple:

* xlat/v4l2_sliced_flags.in: New file.
* xlat/v4l2_vbi_flags.in: Likewise.

> * configure.ac: Check for availabilty of V4L2_BUF_TYPE_SDR_CAPTURE
> and V4L2_BUF_TYPE_SDR_OUTPUT constants.

* configure.ac (AC_CHECK_DECLS): Add V4L2_BUF_TYPE_SDR_CAPTURE
and V4L2_BUF_TYPE_SDR_OUTPUT.

[...]
> +	/* VIDEO_OVERLAY is earlier than Linux-2.6.12-rc2 */
> +	case V4L2_BUF_TYPE_VIDEO_OVERLAY: {

It was defined in the first commit that introduced v4l2 in the kernel.

[...]
> +	/* both are earlier than Linux-2.6.12-rc2 */
>  	case V4L2_BUF_TYPE_VBI_CAPTURE:
>  	case V4L2_BUF_TYPE_VBI_OUTPUT:

Likewise.


-- 
ldv
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