[FFmpeg-devel] [PATCH] libavfilter/af_ambisonic.c Added File for Ambisonic Filter

[Sanchit Sinha]

Patch details:
File added avfilter/af_ambisonic.c
Entries made in avfilter/Makefile and avfilter/allfilters.c
Entry made in Changelog




On Sat, Mar 11, 2017 at 4:29 PM, Sanchit Sinha <sanchit15083 at iiitd.ac.in>
wrote:

>
> Thanks Andy for the valuable info! It would be good to talk and learn from
> these guys, especially for an amateur like me. :)
>
> On Sat, Mar 11, 2017 at 4:23 PM, Andy Furniss <adf.lists at gmail.com> wrote:
>
>> Paul B Mahol wrote:
>>
>>> On 3/11/17, Andy Furniss <adf.lists at gmail.com> wrote:
>>>
>>>> Sanchit Sinha wrote:
>>>>
>>>>> libavfilter/af_ambisonic.c | 139
>>>>>
>>>>
>>>> +        w=(float *)(*(in->extended_data)+itr);
>>>>> +        x=(float *)(*(in->extended_data+1)+itr);
>>>>> +        y=(float *)(*(in->extended_data+2)+itr);
>>>>> +
>>>>> +        *lf = root8 * (2*(*w)+*x+*y);
>>>>> +        *lb = root8 * (2*(*w)-*x+*y);
>>>>> +        *rb = root8 * (2*(*w)-*x-*y);
>>>>> +        *rf = root8 * (2*(*w)+*x-*y);
>>>>>
>>>>
>>>> Seems a bit misleading to call something ambisonic if all it will
>>>> do is 2d, so partial b-format to (square?) 4 channel.
>>>>
>>>> Why not be more specific in the name so the limitation is clear.
>>>>
>>>
>>> This is just for qualification task. Later filter willl be extended.
>>>
>>> It will not be applied as is in tree.
>>>
>>
>> Ahh, OK.
>>
>> A complicated subject.
>>
>> Sanchit, in case you don't know, some of the people who were around at
>> the birth of ambisonics, plus ambdec author can be found on the list -
>>
>> https://mail.music.vt.edu/mailman/listinfo/sursound
>>
>>
>>
>>
>>
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>> http://ffmpeg.org/mailman/listinfo/ffmpeg-devel
>>
>
>
>
> --
> Sanchit Sinha
> B.Tech- CSE
> IIIT-Delhi
> Roll-2015083
>



-- 
Sanchit Sinha
B.Tech- CSE
IIIT-Delhi
Roll-2015083
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