Re: [git:v4l-dvb/v2.6.37] V4L/DVB: V4L2: add a generic function to find the nearest discrete format to the required one

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Thursday, September 30, 2010 13:50:00 Mauro Carvalho Chehab wrote:
> This is an automatic generated email to let you know that the following patch were queued at the 
> http://git.linuxtv.org/media-tree.git tree:
> 
> Subject: V4L/DVB: V4L2: add a generic function to find the nearest discrete format to the required one
> Author:  Guennadi Liakhovetski <g.liakhovetski@xxxxxx>
> Date:    Fri Aug 27 13:41:44 2010 -0300
> 
> Many video drivers implement a fixed set of frame formats and thus face a task
> of finding the best match for a user-requested format. Implementing this in a
> generic function has also an advantage, that different drivers with similar
> supported format sets will select the same format for the user, which improves
> consistency across drivers.
> 
> Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@xxxxxx>
> Signed-off-by: Mauro Carvalho Chehab <mchehab@xxxxxxxxxx>
> 
>  drivers/media/video/v4l2-common.c |   24 ++++++++++++++++++++++++
>  include/linux/videodev2.h         |    8 ++++++++
>  2 files changed, 32 insertions(+), 0 deletions(-)

<snip>

> diff --git a/include/linux/videodev2.h b/include/linux/videodev2.h
> index b06479f..957d5b0 100644
> --- a/include/linux/videodev2.h
> +++ b/include/linux/videodev2.h
> @@ -397,6 +397,14 @@ struct v4l2_frmsize_discrete {
>  	__u32			height;		/* Frame height [pixel] */
>  };
>  
> +struct v4l2_discrete_probe {
> +	const struct v4l2_frmsize_discrete	*sizes;
> +	int					num_sizes;
> +};
> +
> +struct v4l2_frmsize_discrete *v4l2_find_nearest_format(struct v4l2_discrete_probe *probe,
> +						       s32 width, s32 height);
> +
>  struct v4l2_frmsize_stepwise {
>  	__u32			min_width;	/* Minimum frame width [pixel] */
>  	__u32			max_width;	/* Maximum frame width [pixel] */

??? What is this doing in videodev2.h? This belongs in v4l2-common.h!
Both the return pointer and the probe pointer can be const as well.

I'll make a patch for this since I've forgotten to adjust several videobuf_queue_*_init
functions as well in my bkl patch :-(

Regards,

	Hans

-- 
Hans Verkuil - video4linux developer - sponsored by TANDBERG, part of Cisco
--
To unsubscribe from this list: send the line "unsubscribe linux-media" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html


[Index of Archives]     [Linux Input]     [Video for Linux]     [Gstreamer Embedded]     [Mplayer Users]     [Linux USB Devel]     [Linux Audio Users]     [Linux Kernel]     [Linux SCSI]     [Yosemite Backpacking]
  Powered by Linux