Re: [PATCH v1 03/24] media: h264: Avoid wrapping long_term_frame_idx

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Le mardi 29 mars 2022 à 10:35 +0200, Sebastian Fricke a écrit :
> On 28.03.2022 15:59, Nicolas Dufresne wrote:
> > For long term reference, frame_num is set to long_term_frame_idx which
> 
> s/reference/references/
> 
> > does not require wrapping. This if fixed by observation, no directly
> 
> s/This if/This is/
> 
> > related issue have been found yet.
> > 
> > Signed-off-by: Nicolas Dufresne <nicolas.dufresne@xxxxxxxxxxxxx>
> Reviewed-by: Sebastian Fricke <sebastian.fricke@xxxxxxxxxxxxx>
> 
> > ---
> > drivers/media/v4l2-core/v4l2-h264.c | 4 +++-
> > 1 file changed, 3 insertions(+), 1 deletion(-)
> > 
> > diff --git a/drivers/media/v4l2-core/v4l2-h264.c b/drivers/media/v4l2-core/v4l2-h264.c
> > index 8d750ee69e74..aebed1cbe05a 100644
> > --- a/drivers/media/v4l2-core/v4l2-h264.c
> > +++ b/drivers/media/v4l2-core/v4l2-h264.c
> > @@ -57,8 +57,10 @@ v4l2_h264_init_reflist_builder(struct v4l2_h264_reflist_builder *b,
> > 		 * '8.2.4.1 Decoding process for picture numbers' of the spec.
> > 		 * TODO: This logic will have to be adjusted when we start
> > 		 * supporting interlaced content.
> 
> As you change the logic can't you remove the TODO comment now?

Not yet, as I'm not fixing it here. Its removed in:

[PATCH v1 05/24] media: h264: Store all fields into the unordered list

> 
> > +		 * For long term reference, frame_num is set to
> 
> s/reference/references/
> 
> Greetings,
> Sebastian
> 
> > +		 * long_term_frame_idx which requires no wrapping.
> > 		 */
> > -		if (dpb[i].frame_num > cur_frame_num)
> > +		if (!b->refs[i].longterm && dpb[i].frame_num > cur_frame_num)
> > 			b->refs[i].frame_num = (int)dpb[i].frame_num -
> > 					       max_frame_num;
> > 		else
> > -- 
> > 2.34.1
> > 





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