[FFmpeg-devel] [PATCH] libavutil: add an FFT & MDCT implementation

[Lynne]

May 4, 2019, 8:10 PM by michael at niedermayer.cc:

> On Fri, May 03, 2019 at 09:08:57PM +0200, Lynne wrote:
>
>> This commit adds a new API to libavutil to allow for arbitrary transformations
>> on various types of data.
>>
> breaks build on mips
>
> CC	libavutil/fft.o
> src/libavutil/fft.c:47: error: redefinition of typedef ‘AVFFTContext’
> src/libavutil/fft.h:25: note: previous declaration of ‘AVFFTContext’ was here
> make: *** [libavutil/fft.o] Error 1
>
> [...]
>

Fixed, v2 attached. Changes:
-Stride really is in bytes now.
-Corrected some comments (stride supported by all (i)mdcts, not just compound
 ones, some clarifications regarding the scale).

Also that 28-point FFT comparison was a typo, its 128.
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