diff options
Diffstat (limited to 'media/libstagefright/codecs/amrwbenc/src/c2t64fx.c')
| -rw-r--r-- | media/libstagefright/codecs/amrwbenc/src/c2t64fx.c | 110 |
1 files changed, 55 insertions, 55 deletions
diff --git a/media/libstagefright/codecs/amrwbenc/src/c2t64fx.c b/media/libstagefright/codecs/amrwbenc/src/c2t64fx.c index 80990d9..18698e2 100644 --- a/media/libstagefright/codecs/amrwbenc/src/c2t64fx.c +++ b/media/libstagefright/codecs/amrwbenc/src/c2t64fx.c @@ -79,7 +79,7 @@ void ACELP_2t64_fx( #endif Isqrt_n(&s, &exp); - s = L_shl(s, add1(exp, 5)); + s = L_shl(s, add1(exp, 5)); k_cn = vo_round(s); /* set k_dn = 32..512 (ener_dn = 2^30..2^22) */ @@ -107,22 +107,22 @@ void ACELP_2t64_fx( s = (k_cn* (*p0++))+(k_dn * (*p1++)); *p2++ = s >> 7; s = (k_cn* (*p0++))+(k_dn * (*p1++)); - *p2++ = s >> 7; + *p2++ = s >> 7; } /* set sign according to dn2[] = k_cn*cn[] + k_dn*dn[] */ for (i = 0; i < L_SUBFR; i ++) { - val = dn[i]; - ps = dn2[i]; + val = dn[i]; + ps = dn2[i]; if (ps >= 0) { sign[i] = 32767; /* sign = +1 (Q12) */ - vec[i] = -32768; + vec[i] = -32768; } else { sign[i] = -32768; /* sign = -1 (Q12) */ - vec[i] = 32767; + vec[i] = 32767; dn[i] = -val; } } @@ -130,13 +130,13 @@ void ACELP_2t64_fx( * Compute h_inv[i]. * *------------------------------------------------------------*/ /* impulse response buffer for fast computation */ - h = h_buf + L_SUBFR; - h_inv = h + (L_SUBFR<<1); + h = h_buf + L_SUBFR; + h_inv = h + (L_SUBFR<<1); for (i = 0; i < L_SUBFR; i++) { - h[i] = H[i]; - h_inv[i] = vo_negate(h[i]); + h[i] = H[i]; + h_inv[i] = vo_negate(h[i]); } /*------------------------------------------------------------* @@ -144,46 +144,46 @@ void ACELP_2t64_fx( * Result is multiplied by 0.5 * *------------------------------------------------------------*/ /* Init pointers to last position of rrixix[] */ - p0 = &rrixix[0][NB_POS - 1]; - p1 = &rrixix[1][NB_POS - 1]; + p0 = &rrixix[0][NB_POS - 1]; + p1 = &rrixix[1][NB_POS - 1]; - ptr_h1 = h; + ptr_h1 = h; cor = 0x00010000L; /* for rounding */ for (i = 0; i < NB_POS; i++) { cor += ((*ptr_h1) * (*ptr_h1) << 1); ptr_h1++; - *p1-- = (extract_h(cor) >> 1); + *p1-- = (extract_h(cor) >> 1); cor += ((*ptr_h1) * (*ptr_h1) << 1); ptr_h1++; - *p0-- = (extract_h(cor) >> 1); + *p0-- = (extract_h(cor) >> 1); } /*------------------------------------------------------------* * Compute rrixiy[][] needed for the codebook search. * *------------------------------------------------------------*/ - pos = MSIZE - 1; - pos2 = MSIZE - 2; - ptr_hf = h + 1; + pos = MSIZE - 1; + pos2 = MSIZE - 2; + ptr_hf = h + 1; for (k = 0; k < NB_POS; k++) { - p1 = &rrixiy[pos]; - p0 = &rrixiy[pos2]; + p1 = &rrixiy[pos]; + p0 = &rrixiy[pos2]; cor = 0x00008000L; /* for rounding */ - ptr_h1 = h; - ptr_h2 = ptr_hf; + ptr_h1 = h; + ptr_h2 = ptr_hf; for (i = (k + 1); i < NB_POS; i++) { cor += ((*ptr_h1) * (*ptr_h2))<<1; ptr_h1++; ptr_h2++; - *p1 = extract_h(cor); + *p1 = extract_h(cor); cor += ((*ptr_h1) * (*ptr_h2))<<1; ptr_h1++; ptr_h2++; - *p0 = extract_h(cor); + *p0 = extract_h(cor); p1 -= (NB_POS + 1); p0 -= (NB_POS + 1); @@ -191,7 +191,7 @@ void ACELP_2t64_fx( cor += ((*ptr_h1) * (*ptr_h2))<<1; ptr_h1++; ptr_h2++; - *p1 = extract_h(cor); + *p1 = extract_h(cor); pos -= NB_POS; pos2--; @@ -201,17 +201,17 @@ void ACELP_2t64_fx( /*------------------------------------------------------------* * Modification of rrixiy[][] to take signs into account. * *------------------------------------------------------------*/ - p0 = rrixiy; + p0 = rrixiy; for (i = 0; i < L_SUBFR; i += STEP) { - psign = sign; + psign = sign; if (psign[i] < 0) { - psign = vec; + psign = vec; } for (j = 1; j < L_SUBFR; j += STEP) { - *p0 = vo_mult(*p0, psign[j]); + *p0 = vo_mult(*p0, psign[j]); p0++; } } @@ -220,20 +220,20 @@ void ACELP_2t64_fx( * ~@~~~~~~~~~~~~~~ * * 32 pos x 32 pos = 1024 tests (all combinaisons is tested) * *-------------------------------------------------------------------*/ - p0 = rrixix[0]; - p1 = rrixix[1]; - p2 = rrixiy; + p0 = rrixix[0]; + p1 = rrixix[1]; + p2 = rrixiy; - psk = -1; - alpk = 1; - ix = 0; - iy = 1; + psk = -1; + alpk = 1; + ix = 0; + iy = 1; for (i0 = 0; i0 < L_SUBFR; i0 += STEP) { - ps1 = dn[i0]; - alp1 = (*p0++); - pos = -1; + ps1 = dn[i0]; + alp1 = (*p0++); + pos = -1; for (i1 = 1; i1 < L_SUBFR; i1 += STEP) { ps2 = add1(ps1, dn[i1]); @@ -242,16 +242,16 @@ void ACELP_2t64_fx( s = vo_L_mult(alpk, sq) - ((psk * alp2)<<1); if (s > 0) { - psk = sq; - alpk = alp2; - pos = i1; + psk = sq; + alpk = alp2; + pos = i1; } } p1 -= NB_POS; if (pos >= 0) { - ix = i0; - iy = pos; + ix = i0; + iy = pos; } } /*-------------------------------------------------------------------* @@ -260,7 +260,7 @@ void ACELP_2t64_fx( for (i = 0; i < L_SUBFR; i++) { - code[i] = 0; + code[i] = 0; } i0 = (ix >> 1); /* pos of pulse 1 (0..31) */ @@ -268,24 +268,24 @@ void ACELP_2t64_fx( if (sign[ix] > 0) { code[ix] = 512; /* codeword in Q9 format */ - p0 = h - ix; + p0 = h - ix; } else { - code[ix] = -512; - i0 += NB_POS; - p0 = h_inv - ix; + code[ix] = -512; + i0 += NB_POS; + p0 = h_inv - ix; } if (sign[iy] > 0) { - code[iy] = 512; - p1 = h - iy; + code[iy] = 512; + p1 = h - iy; } else { - code[iy] = -512; - i1 += NB_POS; - p1 = h_inv - iy; + code[iy] = -512; + i1 += NB_POS; + p1 = h_inv - iy; } - *index = add1((i0 << 6), i1); + *index = add1((i0 << 6), i1); for (i = 0; i < L_SUBFR; i++) { y[i] = vo_shr_r(add1((*p0++), (*p1++)), 3); |