diff --git a/libcelt/bands.c b/libcelt/bands.c index 165ab2a9da4c6d6bd6f69aa2151cfdb7317d4302..6b44bb31921b7d57a3b032f9b1f18503210467ea 100644 --- a/libcelt/bands.c +++ b/libcelt/bands.c @@ -126,7 +126,7 @@ void normalise_bands(const CELTMode *m, const celt_sig_t *freq, celt_norm_t *X, shift = celt_zlog2(bank[i*C+c])-13; E = VSHR32(bank[i*C+c], shift); if (E>0) - g = DIV32_16(QCONST32(1.f,28),MULT16_16_Q14(E,sqrtC_1[C-1])); + g = EXTRACT16(celt_div(QCONST32(1.f,28),MULT16_16_Q14(E,sqrtC_1[C-1]))); else g = 0; for (j=B*eBands[i];j<B*eBands[i+1];j++) @@ -257,7 +257,7 @@ void compute_pitch_gain(const CELTMode *m, const celt_norm_t *X, const celt_norm residual doesn't quantise well */ Sxy = MULT16_32_Q15(QCONST16(.9f, 15), Sxy); /* gain = Sxy/Sxx */ - gains[i] = DIV32_16(Sxy,ADD32(SHR32(Sxx, PGAIN_SHIFT),EPSILON)); + gains[i] = EXTRACT16(celt_div(Sxy,ADD32(SHR32(Sxx, PGAIN_SHIFT),EPSILON))); /*printf ("%f ", 1-sqrt(1-gain*gain));*/ } /*if(rand()%10==0) diff --git a/libcelt/mathops.h b/libcelt/mathops.h index 39cfb4a5e092cde01e41b3186db1676b3d9bec65..f6d455a433db20dc9426e95595e8108f66a512ff 100644 --- a/libcelt/mathops.h +++ b/libcelt/mathops.h @@ -45,6 +45,7 @@ #define celt_cos_norm(x) (cos((.5f*M_PI)*(x))) #define celt_atan atan #define celt_rcp(x) (1.f/(x)) +#define celt_div(a,b) ((a)/(b)) #endif @@ -202,6 +203,8 @@ static inline celt_word32_t celt_rcp(celt_word32_t x) return VSHR32(EXTEND32(frac),i-16); } +#define celt_div(a,b) MULT32_32_Q31(a,celt_rcp(b)) + #endif /* FIXED_POINT */ diff --git a/libcelt/quant_bands.c b/libcelt/quant_bands.c index 8ce22988913bfcd7115fb7926d7b55cb6bb0f179..29b84246b95567d15aa7a7804e451139f18f9bb9 100644 --- a/libcelt/quant_bands.c +++ b/libcelt/quant_bands.c @@ -106,7 +106,7 @@ static void quant_energy_mono(const CELTMode *m, celt_ener_t *eBands, celt_word1 celt_word16_t f; /* Q8 */ celt_word16_t mean = MULT16_16_Q15(Q15ONE-coef,eMeans[i]); x = amp2dB(eBands[i]); - f = DIV32_16(SHL32(EXTEND32(x-mean-MULT16_16_Q15(coef,oldEBands[i])-prev),8),base_resolution); + f = EXTRACT16(celt_div(SHL32(EXTEND32(x-mean-MULT16_16_Q15(coef,oldEBands[i])-prev),8),base_resolution)); #ifdef FIXED_POINT /* Rounding to nearest integer here is really important! */ qi = (f+128)>>8; @@ -149,7 +149,7 @@ static void quant_energy_mono(const CELTMode *m, celt_ener_t *eBands, celt_word1 if (q2 > frac[i]-1) q2 = frac[i]-1; ec_enc_uint(enc, q2, frac[i]); - offset = DIV32_16(SHL16(q2,8)+QCONST16(.5,8),frac[i])-QCONST16(.5f,8); + offset = EXTRACT16(celt_div(SHL16(q2,8)+QCONST16(.5,8),frac[i])-QCONST16(.5f,8)); oldEBands[i] += PSHR32(MULT16_16(DB_SCALING*6,offset),8); /*printf ("%f ", error[i] - offset);*/ } @@ -199,7 +199,7 @@ static void unquant_energy_mono(const CELTMode *m, celt_ener_t *eBands, celt_wor if (ec_dec_tell(dec, 0) - bits +EC_ILOG(frac[i])> budget) break; q2 = ec_dec_uint(dec, frac[i]); - offset = DIV32_16(SHL16(q2,8)+QCONST16(.5,8),frac[i])-QCONST16(.5f,8); + offset = EXTRACT16(celt_div(SHL16(q2,8)+QCONST16(.5,8),frac[i])-QCONST16(.5f,8)); oldEBands[i] += PSHR32(MULT16_16(DB_SCALING*6,offset),8); } for (i=0;i<m->nbEBands;i++) diff --git a/libcelt/vq.c b/libcelt/vq.c index 3da9d33cacec51b0b542f22b61243d91fb475dab..e9a53bad6e4462b3716f984f34c6c7fefdb62822 100644 --- a/libcelt/vq.c +++ b/libcelt/vq.c @@ -378,7 +378,7 @@ void intra_prediction(celt_norm_t *x, celt_mask_t *W, int N, int K, celt_norm_t xy = MAC16_16(xy, x[j], Y[i+N-j-1]); yy = MAC16_16(yy, Y[i+N-j-1], Y[i+N-j-1]); } - score = DIV32(MULT16_16(ROUND16(xy,14),ROUND16(xy,14)), ROUND16(yy,14)); + score = celt_div(MULT16_16(ROUND16(xy,14),ROUND16(xy,14)), ROUND16(yy,14)); if (score > best_score) { best_score = score;