ff_imdct_calc_3dn2  765 libavcodec/dsputil.h void ff_imdct_calc_3dn2(MDCTContext *s, FFTSample *output, const FFTSample *input);
ff_imdct_calc_3dn2  100 libavcodec/fft.c         s->imdct_calc = ff_imdct_calc_3dn2;