On 4/25/19 10:22 PM, André Almeida wrote:
> Since multiplanar is a superset of single planar formats, instead of
> having different implementations for them, treat all formats as
> multiplanar. If we need to work with single planar formats, convert them to
> multiplanar (with num_planes = 1), re-use the multiplanar code, and
> transform them back to single planar. This is implemented with
> v4l2_fmt_sp2mp_func().
>
> Signed-off-by: André Almeida <[email protected]>
Acked-by: Helen Koike <[email protected]>
> ---
> Changes in v4:
> - Add comment that was in wrong commit
> - Check the return of try_fmt function
>
> Changes in v3:
> - Commit title renamed
> - Get rid of `if (IS_MULTIPLANAR(vcap))` checks and functions to do this
> check
>
> Changes in v2:
> - Make more clear that the generic function _vimc_cap_try_fmt_vid_cap_mp
> expects a multiplanar format as input
> drivers/media/platform/vimc/vimc-capture.c | 57 ++++++++++++++--------
> 1 file changed, 36 insertions(+), 21 deletions(-)
>
> diff --git a/drivers/media/platform/vimc/vimc-capture.c
> b/drivers/media/platform/vimc/vimc-capture.c
> index ae703c52d3f8..fa0d75eb06e8 100644
> --- a/drivers/media/platform/vimc/vimc-capture.c
> +++ b/drivers/media/platform/vimc/vimc-capture.c
> @@ -118,6 +118,9 @@ static void vimc_cap_get_format(struct vimc_ent_device
> *ved,
> *fmt = vcap->format.fmt.pix;
> }
>
> +/*
> + * Functions to handle both single- and multi-planar VIDIOC FMT
> + */
> static int vimc_cap_g_fmt_vid_cap(struct file *file, void *priv,
> struct v4l2_format *f)
> {
> @@ -128,10 +131,10 @@ static int vimc_cap_g_fmt_vid_cap(struct file *file,
> void *priv,
> return 0;
> }
>
> -static int vimc_cap_try_fmt_vid_cap(struct file *file, void *priv,
> - struct v4l2_format *f)
> +static int vimc_cap_try_fmt_vid_cap_mp(struct file *file, void *priv,
> + struct v4l2_format *f)
> {
> - struct v4l2_pix_format *format = &f->fmt.pix;
> + struct v4l2_pix_format_mplane *format = &f->fmt.pix_mp;
>
> format->width = clamp_t(u32, format->width, VIMC_FRAME_MIN_WIDTH,
> VIMC_FRAME_MAX_WIDTH) & ~1;
> @@ -149,20 +152,43 @@ static int vimc_cap_try_fmt_vid_cap(struct file *file,
> void *priv,
> if (!v4l2_format_info(format->pixelformat))
> format->pixelformat = fmt_default.fmt.pix.pixelformat;
>
> - return v4l2_fill_pixfmt(format, format->pixelformat,
> - format->width, format->height);
> + return v4l2_fill_pixfmt_mp(format, format->pixelformat,
> + format->width, format->height);
> }
>
> -static int vimc_cap_s_fmt_vid_cap(struct file *file, void *priv,
> - struct v4l2_format *f)
> +static int vimc_cap_enum_fmt_vid_cap(struct file *file, void *priv,
> + struct v4l2_fmtdesc *f)
> +{
> + if (f->index >= ARRAY_SIZE(vimc_cap_supported_pixfmt))
> + return -EINVAL;
> +
> + f->pixelformat = vimc_cap_supported_pixfmt[f->index];
> +
> + return 0;
> +}
> +
> +/*
> + * VIDIOC FMT handlers for single-planar
> + */
> +static int vimc_cap_try_fmt_vid_cap_sp(struct file *file, void *priv,
> + struct v4l2_format *f)
> +{
> + return v4l2_fmt_sp2mp_func(file, priv, f, vimc_cap_try_fmt_vid_cap_mp);
> +}
> +
> +static int vimc_cap_s_fmt_vid_cap_sp(struct file *file, void *priv,
> + struct v4l2_format *f)
> {
> struct vimc_cap_device *vcap = video_drvdata(file);
> + int ret;
>
> /* Do not change the format while stream is on */
> if (vb2_is_busy(&vcap->queue))
> return -EBUSY;
>
> - vimc_cap_try_fmt_vid_cap(file, priv, f);
> + ret = v4l2_fmt_sp2mp_func(file, priv, f, vimc_cap_try_fmt_vid_cap_mp);
> + if (ret)
> + return ret;
>
> dev_dbg(vcap->dev, "%s: format update: "
> "old:%dx%d (0x%x, %d, %d, %d, %d) "
> @@ -185,17 +211,6 @@ static int vimc_cap_s_fmt_vid_cap(struct file *file,
> void *priv,
> return 0;
> }
>
> -static int vimc_cap_enum_fmt_vid_cap(struct file *file, void *priv,
> - struct v4l2_fmtdesc *f)
> -{
> - if (f->index >= ARRAY_SIZE(vimc_cap_supported_pixfmt))
> - return -EINVAL;
> -
> - f->pixelformat = vimc_cap_supported_pixfmt[f->index];
> -
> - return 0;
> -}
> -
> static bool vimc_cap_is_pixfmt_supported(u32 pixelformat)
> {
> unsigned int i;
> @@ -240,8 +255,8 @@ static const struct v4l2_ioctl_ops vimc_cap_ioctl_ops = {
> .vidioc_querycap = vimc_cap_querycap,
>
> .vidioc_g_fmt_vid_cap = vimc_cap_g_fmt_vid_cap,
> - .vidioc_s_fmt_vid_cap = vimc_cap_s_fmt_vid_cap,
> - .vidioc_try_fmt_vid_cap = vimc_cap_try_fmt_vid_cap,
> + .vidioc_s_fmt_vid_cap = vimc_cap_s_fmt_vid_cap_sp,
> + .vidioc_try_fmt_vid_cap = vimc_cap_try_fmt_vid_cap_sp,
> .vidioc_enum_fmt_vid_cap = vimc_cap_enum_fmt_vid_cap,
> .vidioc_enum_framesizes = vimc_cap_enum_framesizes,
>
>
