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Subject: Re: [FFmpeg-devel] [PATCH v7 1/3] avutil/log: Add log flag
 AV_LOG_PRINT_MEMADDRESSES
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softworkz .:
> 
> 
>> -----Original Message-----
>> From: ffmpeg-devel <ffmpeg-devel-bounces@ffmpeg.org> On Behalf Of
>> Andreas Rheinhardt
>> Sent: Mittwoch, 9. April 2025 09:28
>> To: ffmpeg-devel@ffmpeg.org
>> Subject: Re: [FFmpeg-devel] [PATCH v7 1/3] avutil/log: Add log flag
>> AV_LOG_PRINT_MEMADDRESSES
>>
>> softworkz:
>>> From: softworkz <softworkz@hotmail.com>
>>>
>>> which is controls prefix formatting. With this flag set, the prefix is
>>> printed including the memory address, otherwise it is omitted.
>>> In libavutil, the flag is set by default, retaining the previous
>>> behavior. fftools remove the flag as default.
>>
>> The implementation of this flag is counter to the usual one: It is
>> enabled by default, but every av_log_set_flags() that does not set
>> AV_LOG_PRINT_MEMADDRESSES implicitly disables printing memory addresses.
> 
> Hi Andreas,
> 
> thanks for looking at the patchset.
> 
> The intention is that memadress printing is enabled by default for library use of avutil (so that there's no change in behavior) but not for fftools (following the suggestion from Marton).
> 
> For fftools, the default is to _not_ print memory addresses _unless_ a user specifies something like:
> 
> ./ffmpeg -v +memaddresses .....
> 
> 
>> This means that it will affect users that do not opt into this. I don't
>> think this is intended
> 
> Yes, it is.

So this new behavior is intended? Because this clashes with your
statement above that there is no change in behavior for avutil users.

> 
> 
>> or that the new system makes sense.
> 
> Do you think it would make more sense to negate the flag semantic?

Yes.

- Andreas

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