Lines Matching refs:ac
39 const opus_val32 *ac, /* in: [0...p] autocorrelation values */ in _celt_lpc() argument
45 opus_val32 error = ac[0]; in _celt_lpc()
53 if (ac[0] != 0) in _celt_lpc()
59 rr += MULT32_32_Q31(lpc[j],ac[i - j]); in _celt_lpc()
60 rr += SHR32(ac[i + 1],3); in _celt_lpc()
76 if (error<SHR32(ac[0],10)) in _celt_lpc()
79 if (error<.001f*ac[0]) in _celt_lpc()
230 opus_val32 *ac, /* out: [0...lag-1] ac values */ in _celt_autocorr() argument
284 celt_pitch_xcorr(xptr, xptr, ac, fastN, lag+1, arch); in _celt_autocorr()
289 ac[k] += d; in _celt_autocorr()
294 ac[0] += SHL32((opus_int32)1, -shift); in _celt_autocorr()
295 if (ac[0] < 268435456) in _celt_autocorr()
297 int shift2 = 29 - EC_ILOG(ac[0]); in _celt_autocorr()
299 ac[i] = SHL32(ac[i], shift2); in _celt_autocorr()
301 } else if (ac[0] >= 536870912) in _celt_autocorr()
304 if (ac[0] >= 1073741824) in _celt_autocorr()
307 ac[i] = SHR32(ac[i], shift2); in _celt_autocorr()