[FFmpeg-user] A question about fft kernel in FFmpeg

[Grace Ryan]

Hi, Everyone

I notice that the function imdct_half_altivec() in the file
libavcodec/ppc/fft_altivec.c uses ff_fft_calc_altivec(). I wonder what is
the data format (FFTComplex* z) of the input data and output data of the
function ff_fft_calc_altivec()? For example, for 32-point FFT, it is Re0,
Re1, Re2, Re3...Re31, Im0, Im1, Im2...Im31 or something else?

Best,
Rong Yan