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.
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,
>>>>>
>>>
>>>
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>
>
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