Hi,
On 4/6/20 8:56 AM, Dafna Hirschfeld wrote:
>
>
> On 4/5/20 8:16 PM, Laurent Pinchart wrote:
>> Hi Dafna,
>>
>> Thank you for the patch.
>>
>> On Thu, Apr 02, 2020 at 09:04:18PM +0200, Dafna Hirschfeld wrote:
>>> Plane formats with the u and v planes swapped can be
>>> supported by changing the address of the cb and cr in
>>> the buffer.
>>>
>>> Signed-off-by: Dafna Hirschfeld <dafna.hirschfeld@xxxxxxxxxxxxx>
>>> Acked-by: Helen Koike <helen.koike@xxxxxxxxxxxxx>
>>> ---
>>> drivers/staging/media/rkisp1/rkisp1-capture.c | 17 +++++++++++++++++
>>> 1 file changed, 17 insertions(+)
>>>
>>> diff --git a/drivers/staging/media/rkisp1/rkisp1-capture.c b/drivers/staging/media/rkisp1/rkisp1-capture.c
>>> index fa2849209433..2d274e8f565b 100644
>>> --- a/drivers/staging/media/rkisp1/rkisp1-capture.c
>>> +++ b/drivers/staging/media/rkisp1/rkisp1-capture.c
>>> @@ -41,6 +41,10 @@
>>> (((write_format) == RKISP1_MI_CTRL_MP_WRITE_YUV_SPLA) || \
>>> ((write_format) == RKISP1_MI_CTRL_SP_WRITE_SPLA))
>>> +#define RKISP1_IS_PLANAR(write_format) \
>>> + (((write_format) == RKISP1_MI_CTRL_SP_WRITE_PLA) || \
>>> + ((write_format) == RKISP1_MI_CTRL_MP_WRITE_YUV_PLA_OR_RAW8))
>>> +
>>> enum rkisp1_plane {
>>> RKISP1_PLANE_Y = 0,
>>> RKISP1_PLANE_CB = 1,
>>> @@ -788,6 +792,19 @@ static void rkisp1_vb2_buf_queue(struct vb2_buffer *vb)
>>> rkisp1_pixfmt_comp_size(pixm, RKISP1_PLANE_CB);
>>> }
>>> + /*
>>> + * uv swap can be supported for plane formats by switching
>>> + * the address of cb and cr
>>> + */
>>> + if (RKISP1_IS_PLANAR(cap->pix.cfg->write_format) &&
>>
>> As commented on patch 3/5, could this be checked from the data in
>> v4l2_format_info ?
> yes
>>
>>> + cap->pix.cfg->uv_swap) {
>>> + ispbuf->buff_addr[RKISP1_PLANE_CR] =
>>> + ispbuf->buff_addr[RKISP1_PLANE_CB];
>>> + ispbuf->buff_addr[RKISP1_PLANE_CB] =
>>> + ispbuf->buff_addr[RKISP1_PLANE_CR] +
>>> + rkisp1_pixfmt_comp_size(pixm, RKISP1_PLANE_CR);
Actually this is wrong if pixm->num_planes != 1, since they are different buffers.
>>
>> How about
>>
>> swap(ispbuf->buff_addr[RKISP1_PLANE_CR],
>> ispbuf->buff_addr[RKISP1_PLANE_CB]);
>>
>> ?
> This also works, theoretically if there was a format where the Cb, Cr planes
> are not equal size then a swap will not work.
If you check rkisp1_fill_pixfmt(), you'll see that they are equal size.
hdiv and vdiv applies to both.
Thank you Laurent for the review and thank you Dafna for working on this.
Regards,
Helen
>
> Thanks,
> Dafna
>>
>>> + }
>>> +
>>> spin_lock_irqsave(&cap->buf.lock, flags);
>>> /*
>>
>
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