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Message-ID: <1468946654.30095.4.camel@mtksdaap41>
Date: Wed, 20 Jul 2016 00:44:14 +0800
From: tiffany lin <tiffany.lin@...iatek.com>
To: Hans Verkuil <hverkuil@...all.nl>
CC: Hans Verkuil <hans.verkuil@...co.com>,
Mauro Carvalho Chehab <mchehab@....samsung.com>,
Matthias Brugger <matthias.bgg@...il.com>,
Daniel Kurtz <djkurtz@...omium.org>,
Pawel Osciak <posciak@...omium.org>,
Eddie Huang <eddie.huang@...iatek.com>,
Yingjoe Chen <yingjoe.chen@...iatek.com>,
<linux-kernel@...r.kernel.org>, <linux-media@...r.kernel.org>,
<linux-mediatek@...ts.infradead.org>
Subject: Re: [PATCH] vcodec: mediatek: Add g/s_selection support for V4L2
Encoder
Hi Hans,
On Mon, 2016-07-18 at 14:44 +0200, Hans Verkuil wrote:
> On 07/18/2016 02:28 PM, tiffany lin wrote:
> > Understood now.
> >
> > Now I am trying to figure out how to make this function right.
> > Our encoder only support crop range from (0, 0) to (width, height), so
> > if s->r.top and s->r.left not 0, I will return -EINVAL.
> >
> >
> > Another thing is that in v4l2-compliance test, it has testLegacyCrop.
> > It looks like we still need to support
> > V4L2_SEL_TGT_COMPOSE_DEFAULT:
> > V4L2_SEL_TGT_COMPOSE_BOUNDS:
> > V4L2_SEL_TGT_COMPOSE:
> > to pass v4l2 compliance test, Or it will fail in
> > fail: v4l2-test-formats.cpp(1318): !doioctl(node, VIDIOC_G_SELECTION,
> > &sel)
> > fail: v4l2-test-formats.cpp(1336): testLegacyCrop(node)
> > test Cropping: FAIL
>
> Against which kernel are you testing? In the current media_tree master
> there is a bug in drivers/media/v4l2-core/v4l2-ioctl.c, v4l_cropcap():
>
> This code:
>
> if (WARN_ON(!ops->vidioc_cropcap && !ops->vidioc_cropcap))
>
> should be:
>
> if (WARN_ON(!ops->vidioc_cropcap && !ops->vidioc_g_selection))
>
> The fix is waiting for a pull from Linus.
>
> Also update to the latest v4l2-compliance: I've made some changes that
> might affect this. And I added additional checks to verify if all the
> colorspace-related format fields are properly propagated from the
> output format to the capture format.
>
Sorry, I miss this part.
After update to latest version include this fix, it can pass crop test
without supporting COMPOSE in output queue.
Appreciated for your help
best regards,
Tiffany
> Regards,
>
> Hans
>
> >
> > I don't understand the following testing code.
> >
> > /*
> > * If either CROPCAP or G_CROP works, then G_SELECTION should
> > * work as well.
> > * If neither CROPCAP nor G_CROP work, then G_SELECTION
> > shouldn't
> > * work either.
> > */
> > if (!doioctl(node, VIDIOC_CROPCAP, &cap)) {
> > fail_on_test(doioctl(node, VIDIOC_G_SELECTION, &sel));
> >
> > // Checks for invalid types
> > if (cap.type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
> > cap.type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
> > else
> > cap.type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE;
> > fail_on_test(doioctl(node, VIDIOC_CROPCAP, &cap) !=
> > EINVAL);
> > cap.type = 0xff;
> > fail_on_test(doioctl(node, VIDIOC_CROPCAP, &cap) !=
> > EINVAL);
> > } else {
> > fail_on_test(!doioctl(node, VIDIOC_G_SELECTION, &sel));
> > -> fail here
> > }
> >
> > When test OUTPUT queue, it fail because v4l_cropcap will fail when
> > s.target = V4L2_SEL_TGT_COMPOSE_BOUNDS.
> > If VIDIOC_CROPCAP ioctl fail, VIDIOC_G_SELECTION should fail.
> > But VIDIOC_G_SELECTION target on CROP not COMPOSE and it success.
> >
> >
> > best regards,
> > Tiffany
> >
> >
> >
> >> Regards,
> >>
> >> Hans
> >>
> >>>
> >>>
> >>> static int v4l_g_crop(const struct v4l2_ioctl_ops *ops,
> >>> struct file *file, void *fh, void *arg)
> >>> {
> >>> struct v4l2_crop *p = arg;
> >>> struct v4l2_selection s = {
> >>> .type = p->type,
> >>> };
> >>> int ret;
> >>>
> >>> if (ops->vidioc_g_crop)
> >>> return ops->vidioc_g_crop(file, fh, p);
> >>> /* simulate capture crop using selection api */
> >>>
> >>> /* crop means compose for output devices */
> >>> if (V4L2_TYPE_IS_OUTPUT(p->type))
> >>> s.target = V4L2_SEL_TGT_COMPOSE_ACTIVE;
> >>> else
> >>> s.target = V4L2_SEL_TGT_CROP_ACTIVE;
> >>>
> >>> ret = ops->vidioc_g_selection(file, fh, &s);
> >>>
> >>> /* copying results to old structure on success */
> >>> if (!ret)
> >>> p->c = s.r;
> >>> return ret;
> >>> }
> >>>
> >>> static int v4l_s_crop(const struct v4l2_ioctl_ops *ops,
> >>> struct file *file, void *fh, void *arg)
> >>> {
> >>> struct v4l2_crop *p = arg;
> >>> struct v4l2_selection s = {
> >>> .type = p->type,
> >>> .r = p->c,
> >>> };
> >>>
> >>> if (ops->vidioc_s_crop)
> >>> return ops->vidioc_s_crop(file, fh, p);
> >>> /* simulate capture crop using selection api */
> >>>
> >>> /* crop means compose for output devices */
> >>> if (V4L2_TYPE_IS_OUTPUT(p->type))
> >>> s.target = V4L2_SEL_TGT_COMPOSE_ACTIVE;
> >>> else
> >>> s.target = V4L2_SEL_TGT_CROP_ACTIVE;
> >>>
> >>> return ops->vidioc_s_selection(file, fh, &s);
> >>> }
> >>>
> >>>
> >>> best regards,
> >>> Tiffany
> >>>
> >>>
> >>>
> >>>
> >>>> Regards,
> >>>>
> >>>> Hans
> >>>>
> >>>>> +
> >>>>> + return 0;
> >>>>> +}
> >>>>> +
> >>>>> static int vidioc_venc_qbuf(struct file *file, void *priv,
> >>>>> struct v4l2_buffer *buf)
> >>>>> {
> >>>>> @@ -688,6 +759,9 @@ const struct v4l2_ioctl_ops mtk_venc_ioctl_ops = {
> >>>>>
> >>>>> .vidioc_create_bufs = v4l2_m2m_ioctl_create_bufs,
> >>>>> .vidioc_prepare_buf = v4l2_m2m_ioctl_prepare_buf,
> >>>>> +
> >>>>> + .vidioc_g_selection = vidioc_venc_g_selection,
> >>>>> + .vidioc_s_selection = vidioc_venc_s_selection,
> >>>>> };
> >>>>>
> >>>>> static int vb2ops_venc_queue_setup(struct vb2_queue *vq,
> >>>>>
> >>>
> >>>
> >>> --
> >>> To unsubscribe from this list: send the line "unsubscribe linux-media" in
> >>> the body of a message to majordomo@...r.kernel.org
> >>> More majordomo info at http://vger.kernel.org/majordomo-info.html
> >>>
> >
> >
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