[FFmpeg-devel] [PATCH] Fix rdiv always being set to 0 in vf_convolution.c

[Marton Balint]

On Sun, 18 Feb 2024, Stone Chen wrote:

> Hi Marton,
>
> Thanks for the feedback!
>
> I'm not sure what dynamic reconfiguration is, from some searching I think
> it might be related to commands?

Yeah, exactly. If you check the code, the process_command callback allows 
this, which eventually calls param_init() which does filter 
(re)configuration and recalculation of rdivs.

Regards,
Marton

PS: Please do not top post on this mailing list.

>
> On Sun, Feb 18, 2024 at 7:08 PM Marton Balint <cus at passwd.hu> wrote:
>
>>
>>
>> On Sun, 18 Feb 2024, Stone Chen wrote:
>>
>> > In commit 6c45d34, a line was added that always sets rdiv to 0,
>> overriding any user input. This removes that line allowing user set values
>> for 0rdiv, 1rdiv, 2rdiv, 3rdiv to apply as expected. This fixes ticket
>> #10294.
>>
>> This is likely not the correct fix, because resetting it to 0 was added to
>> support dynamic reconfigurations.
>>
>> The way I see it, the user option rdiv-s and internally used rdivs
>> should be separated, init_params should always recalculate the internal
>> rdivs based on the user option rdivs...
>>
>> Regards,
>> Marton
>>
>> >
>> > Signed-off-by: Stone Chen <chen.stonechen at gmail.com>
>> > ---
>> > libavfilter/vf_convolution.c | 1 -
>> > 1 file changed, 1 deletion(-)
>> >
>> > diff --git a/libavfilter/vf_convolution.c b/libavfilter/vf_convolution.c
>> > index bf67f392f6..a00bb2b3c4 100644
>> > --- a/libavfilter/vf_convolution.c
>> > +++ b/libavfilter/vf_convolution.c
>> > @@ -674,7 +674,6 @@ static int param_init(AVFilterContext *ctx)
>> >             p = orig = av_strdup(s->matrix_str[i]);
>> >             if (p) {
>> >                 s->matrix_length[i] = 0;
>> > -                s->rdiv[i] = 0.f;
>> >                 sum = 0.f;
>> >
>> >                 while (s->matrix_length[i] < 49) {
>> > --
>> > 2.43.2
>> >
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