On 24/05/16 12:49, nablet developer wrote:
> 
>> On 24 May 2016, at 17:01, Mark Thompson <s...@jkqxz.net> wrote:
>>
>> On 13/04/16 09:18, nablet developer wrote:
>>> Signed-off-by: nablet developer <s...@nablet.com>
>>> ---
>>> libavcodec/qsv.c          | 35 +---------------------------
>>> libavcodec/qsv_internal.h |  5 ----
>>> libavcodec/qsvdec.c       |  1 +
>>> libavcodec/qsvenc.c       |  1 +
>>> libavutil/Makefile        |  1 +
>>> libavutil/qsv_internal.c  | 58 
>>> +++++++++++++++++++++++++++++++++++++++++++++++
>>> libavutil/qsv_internal.h  | 27 ++++++++++++++++++++++
>>> 7 files changed, 89 insertions(+), 39 deletions(-)
>>> create mode 100644 libavutil/qsv_internal.c
>>> create mode 100644 libavutil/qsv_internal.h
>>>
>>> diff --git a/libavutil/qsv_internal.h b/libavutil/qsv_internal.h
>>> new file mode 100644
>>> index 0000000..de00d09
>>> --- /dev/null
>>> +++ b/libavutil/qsv_internal.h
>>> ...
>>> +/**
>>> +  * Convert a libmfx error code into a ffmpeg error code.
>>> +  */
>>> +int ff_qsv_error(int mfx_err);
>>
>> This fails for non-static builds because of the namespace prefix (try 
>> building
>> the shared libraries).
> 
> oh, good catch, thanks. I think function then should be called 
> "avpriv_qsv_error" according to the 
> https://ffmpeg.org/developer.html#Naming-conventions 
> <https://ffmpeg.org/developer.html#Naming-conventions>, right?

Correct, assuming this form is accepted.

(For example, it could instead be a static inline function and avoid the
namespace issue by not appearing as a symbol in the binary.  Not sure whether
that is actually better, but it is a possibility to consider.)

> I will also test my further changes with shared builds starting from now (I 
> was using instructions from 
> https://trac.ffmpeg.org/wiki/CompilationGuide/Centos 
> <https://trac.ffmpeg.org/wiki/CompilationGuide/Centos> which were for static 
> build).
> 
>>
>> Does this function really need to be available everywhere?  I think you 
>> should
>> wait until you have other patches which actually require it to so that this
>> change can be assessed properly.  In isolation, it is not useful.
> 
> hm, if my other patches will depend on this patch, how can they be applied 
> before this change? I am actually following advice from 
> https://ffmpeg.org/developer.html#Submitting-patches-1 
> <https://ffmpeg.org/developer.html#Submitting-patches-1> to split patches 
> into small self-contained pieces. please advice how to proceed.

I was meaning sending this patch along with others together as a patch series.
They are still distinct changes, self-contained in each patch and possible to
apply separately in order, but submitted together in order to make the review
more meaningful.

- Mark

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