[FFmpeg-devel] [PATCH] avfilter/af_volumedetect.c: Add 32bit float audio support

[Yiğithan Yiğit]

Hi,

According to your advices, I made some changes of mine last patch. I feel like this one way more better. I removed trivial calculations but I want to say I am not proud of how I handled histogram in float despite 16 bit integer histogram. I am storing dB values instead of storing samples. I feel this one is more convenient. Still I am open to advices.

Thank you.
Yigithan




> On Mar 21, 2024, at 11:30 PM, Paul B Mahol <onemda at gmail.com> wrote:
> 
> On Wed, Mar 20, 2024 at 11:55 PM Yiğithan Yiğit <yigithanyigit35 at gmail.com <mailto:yigithanyigit35 at gmail.com>>
> wrote:
> 
>> 
>>> On Mar 21, 2024, at 12:10 AM, Paul B Mahol <onemda at gmail.com> wrote:
>>> 
>>> Why? This is pointless.
>>> 
>>> volumedetect have histogram output, float patch does not have it at all.
>>> Use astats filter.
>>> 
>>> On Wed, Mar 20, 2024 at 9:47 PM Yiğithan Yiğit <
>> yigithanyigit35 at gmail.com>
>>> wrote:
>>> 
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>> 
>> I am a beginner/student also new at open source but I love FFmpeg and
>> using in my daily life. From my perspective volumedetect way more user
>> friendly. I believe adding this patch would be useful to people such as
>> #9613. The reason lack of histogram output for float mostly for my
>> indecision about range of the histogram. I am open the suggestions and
>> after that I can make a new patch.
>> 
> 
> It is trivial (to some people) to add histogram per dB for float/double
> inputs.
> But this patch just does some extremely trivial math calculations so that
> float input have completely different output from integer ones.
> That is very odd and unfriendly from my perspective.
> 
> Besides if you only interested in discrete sample audio peak finder in
> audio input use astats and measure_overall=Peak_level options.
> Yes they are not default on. Because more statistics are more important
> than single number.
> 
> I'm not against adding proper and useful and correct float/double support
> to volumedetect, but it needs to have same/similar structure of output as
> integer sample format input audio, otherwise it just looks lazy and prone
> for users wondering what is going on when they use different sample formats
> in theirs graphs.
> 
> 
>> 
>> Best Regards
>> Yigithan
>> 
>> 
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