av_cold void ff_fft_init_arm(FFTContext *s) { int cpu_flags = av_get_cpu_flags(); if (have_vfp(cpu_flags) && !have_vfpv3(cpu_flags)) { s->fft_calc = ff_fft_calc_vfp; #if CONFIG_MDCT s->imdct_half = ff_imdct_half_vfp; #endif } if (have_neon(cpu_flags)) { s->fft_permute = ff_fft_permute_neon; s->fft_calc = ff_fft_calc_neon; #if CONFIG_MDCT s->imdct_calc = ff_imdct_calc_neon; s->imdct_half = ff_imdct_half_neon; s->mdct_calc = ff_mdct_calc_neon; s->mdct_permutation = FF_MDCT_PERM_INTERLEAVE; #endif } }