| Date | Thu, 9 Nov 2023 12:19:44 +0100 | Subject | Re: [PATCH v14 34/56] sample: v4l: Stop direct calls to queue num_buffers field | From | Andrzej Pietrasiewicz <> |
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W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze: > Use vb2_get_num_buffers() to avoid using queue num_buffers field directly. > This allows us to change how the number of buffers is computed in the > future. > > Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> --- > samples/v4l/v4l2-pci-skeleton.c | 5 +++-- > 1 file changed, 3 insertions(+), 2 deletions(-) > > diff --git a/samples/v4l/v4l2-pci-skeleton.c b/samples/v4l/v4l2-pci-skeleton.c > index a61f94db18d9..a65aa9d1e9da 100644 > --- a/samples/v4l/v4l2-pci-skeleton.c > +++ b/samples/v4l/v4l2-pci-skeleton.c > @@ -155,6 +155,7 @@ static int queue_setup(struct vb2_queue *vq, > unsigned int sizes[], struct device *alloc_devs[]) > { > struct skeleton *skel = vb2_get_drv_priv(vq); > + unsigned int q_num_bufs = vb2_get_num_buffers(vq); > > skel->field = skel->format.field; > if (skel->field == V4L2_FIELD_ALTERNATE) { > @@ -167,8 +168,8 @@ static int queue_setup(struct vb2_queue *vq, > skel->field = V4L2_FIELD_TOP; > } > > - if (vq->num_buffers + *nbuffers < 3) > - *nbuffers = 3 - vq->num_buffers; > + if (q_num_bufs + *nbuffers < 3) > + *nbuffers = 3 - q_num_bufs; > > if (*nplanes) > return sizes[0] < skel->format.sizeimage ? -EINVAL : 0;
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