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/third_party/ffmpeg/libavcodec/
Dmdct15.c64 const int l_ptwo = 1 << b_ptwo; /* Total length for the power of two FFTs */ in init_pfa_reindex_tabs() local
65 const int inv_1 = l_ptwo << ((4 - b_ptwo) & 3); /* (2^b_ptwo)^-1 mod 15 */ in init_pfa_reindex_tabs()
68 s->pfa_prereindex = av_malloc_array(15 * l_ptwo, sizeof(*s->pfa_prereindex)); in init_pfa_reindex_tabs()
72 s->pfa_postreindex = av_malloc_array(15 * l_ptwo, sizeof(*s->pfa_postreindex)); in init_pfa_reindex_tabs()
77 for (i = 0; i < l_ptwo; i++) { in init_pfa_reindex_tabs()
79 const int q_pre = ((l_ptwo * j)/15 + i) >> b_ptwo; in init_pfa_reindex_tabs()
82 const int k_post = i*inv_2*15 + j*inv_1 - 15*q_post*l_ptwo; in init_pfa_reindex_tabs()
84 s->pfa_postreindex[k_post] = l_ptwo*j + i; in init_pfa_reindex_tabs()
170 const int l_ptwo = 1 << s->ptwo_fft.nbits; in mdct15() local
174 for (i = 0; i < l_ptwo; i++) { in mdct15()
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