Re: [PATCH] media: venus: add support for selection rectangles

mgottam
2018-11-01T13:10:39Z

On 2018-10-16 15:11, Stanimir Varbanov wrote:
> Hi Malathi,
>
> On 10/09/2018 10:53 AM, Malathi Gottam wrote:
>> Handles target type crop by setting the new active rectangle
>> to hardware. The new rectangle should be within YUV size.
>>
>> Signed-off-by: Malathi Gottam <mgottam@codeaurora.org>
>> ---
>> drivers/media/platform/qcom/venus/venc.c | 19 +++++++++++++++++--
>> 1 file changed, 17 insertions(+), 2 deletions(-)
>>
>> diff --git a/drivers/media/platform/qcom/venus/venc.c
>> b/drivers/media/platform/qcom/venus/venc.c
>> index 3f50cd0..754c19a 100644
>> --- a/drivers/media/platform/qcom/venus/venc.c
>> +++ b/drivers/media/platform/qcom/venus/venc.c
>> @@ -478,16 +478,31 @@ static int venc_g_fmt(struct file *file, void
>> *fh, struct v4l2_format *f)
>> venc_s_selection(struct file *file, void *fh, struct v4l2_selection
>> *s)
>> {
>> struct venus_inst *inst = to_inst(file);
>> + int ret;
>> + u32 buftype;
>>
>> if (s->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
>> return -EINVAL;
>>
>> switch (s->target) {
>> case V4L2_SEL_TGT_CROP:
>> - if (s->r.width != inst->out_width ||
>> - s->r.height != inst->out_height ||
>> + if (s->r.width > inst->out_width ||
>> + s->r.height > inst->out_height ||
>> s->r.top != 0 || s->r.left != 0)
>> return -EINVAL;
>> + if (s->r.width != inst->width ||
>> + s->r.height != inst->height) {
>> + buftype = HFI_BUFFER_OUTPUT;
>> + ret = venus_helper_set_output_resolution(inst,
>> + s->r.width,
>> + s->r.height,
>> + buftype);
>
> I'm afraid that set_output_resolution cannot be called at any time. Do
> you think we can set it after start_session?

Yes Stan, we can set output_resolution after the session has been
initialization.
As per the spec, this call s_selection is an optional step under
Initialization
procedure of encoder even before we request buffers.

So I think setting output resolution in this api shouldn't cause any
issue once
we are confident on the instance state.