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Copy pathSKP_Silk_noise_shape_analysis_FIX.go
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SKP_Silk_noise_shape_analysis_FIX.go
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package silk
import "unsafe"
func warped_gain(coefs_Q24 []int32, lambda_Q16 int32, order int32) int32 {
var (
i int32
gain_Q24 int32
)
lambda_Q16 = -lambda_Q16
gain_Q24 = coefs_Q24[order-1]
for i = order - 2; i >= 0; i-- {
gain_Q24 = SKP_SMLAWB(coefs_Q24[i], gain_Q24, lambda_Q16)
}
gain_Q24 = SKP_SMLAWB(SKP_FIX_CONST(1.0, 24), gain_Q24, -lambda_Q16)
return SKP_INVERSE32_varQ(gain_Q24, 40)
}
func limit_warped_coefs(coefs_syn_Q24 []int32, coefs_ana_Q24 []int32, lambda_Q16 int32, limit_Q24 int32, order int32) {
var (
i int32
iter int32
ind int32 = 0
tmp int32
maxabs_Q24 int32
chirp_Q16 int32
gain_syn_Q16 int32
gain_ana_Q16 int32
nom_Q16 int32
den_Q24 int32
)
lambda_Q16 = -lambda_Q16
for i = order - 1; i > 0; i-- {
coefs_syn_Q24[i-1] = SKP_SMLAWB(coefs_syn_Q24[i-1], coefs_syn_Q24[i], lambda_Q16)
coefs_ana_Q24[i-1] = SKP_SMLAWB(coefs_ana_Q24[i-1], coefs_ana_Q24[i], lambda_Q16)
}
lambda_Q16 = -lambda_Q16
nom_Q16 = SKP_SMLAWB(SKP_FIX_CONST(1.0, 16), -lambda_Q16, lambda_Q16)
den_Q24 = SKP_SMLAWB(SKP_FIX_CONST(1.0, 24), coefs_syn_Q24[0], lambda_Q16)
gain_syn_Q16 = SKP_DIV32_varQ(nom_Q16, den_Q24, 24)
den_Q24 = SKP_SMLAWB(SKP_FIX_CONST(1.0, 24), coefs_ana_Q24[0], lambda_Q16)
gain_ana_Q16 = SKP_DIV32_varQ(nom_Q16, den_Q24, 24)
for i = 0; i < order; i++ {
coefs_syn_Q24[i] = SKP_SMULWW(gain_syn_Q16, coefs_syn_Q24[i])
coefs_ana_Q24[i] = SKP_SMULWW(gain_ana_Q16, coefs_ana_Q24[i])
}
for iter = 0; iter < 10; iter++ {
maxabs_Q24 = -1
for i = 0; i < order; i++ {
if (((coefs_syn_Q24[i]) ^ (coefs_syn_Q24[i])>>31) - ((coefs_syn_Q24[i]) >> 31)) > (((coefs_ana_Q24[i]) ^ (coefs_ana_Q24[i])>>31) - ((coefs_ana_Q24[i]) >> 31)) {
tmp = ((coefs_syn_Q24[i]) ^ (coefs_syn_Q24[i])>>31) - ((coefs_syn_Q24[i]) >> 31)
} else {
tmp = ((coefs_ana_Q24[i]) ^ (coefs_ana_Q24[i])>>31) - ((coefs_ana_Q24[i]) >> 31)
}
if tmp > maxabs_Q24 {
maxabs_Q24 = tmp
ind = i
}
}
if maxabs_Q24 <= limit_Q24 {
return
}
for i = 1; i < order; i++ {
coefs_syn_Q24[i-1] = SKP_SMLAWB(coefs_syn_Q24[i-1], coefs_syn_Q24[i], lambda_Q16)
coefs_ana_Q24[i-1] = SKP_SMLAWB(coefs_ana_Q24[i-1], coefs_ana_Q24[i], lambda_Q16)
}
gain_syn_Q16 = SKP_INVERSE32_varQ(gain_syn_Q16, 32)
gain_ana_Q16 = SKP_INVERSE32_varQ(gain_ana_Q16, 32)
for i = 0; i < order; i++ {
coefs_syn_Q24[i] = SKP_SMULWW(gain_syn_Q16, coefs_syn_Q24[i])
coefs_ana_Q24[i] = SKP_SMULWW(gain_ana_Q16, coefs_ana_Q24[i])
}
chirp_Q16 = SKP_FIX_CONST(0.99, 16) - SKP_DIV32_varQ(SKP_SMULWB(maxabs_Q24-limit_Q24, SKP_SMLABB(SKP_FIX_CONST(0.8, 10), SKP_FIX_CONST(0.1, 10), iter)), maxabs_Q24*(ind+1), 22)
SKP_Silk_bwexpander_32(coefs_syn_Q24, order, chirp_Q16)
SKP_Silk_bwexpander_32(coefs_ana_Q24, order, chirp_Q16)
lambda_Q16 = -lambda_Q16
for i = order - 1; i > 0; i-- {
coefs_syn_Q24[i-1] = SKP_SMLAWB(coefs_syn_Q24[i-1], coefs_syn_Q24[i], lambda_Q16)
coefs_ana_Q24[i-1] = SKP_SMLAWB(coefs_ana_Q24[i-1], coefs_ana_Q24[i], lambda_Q16)
}
lambda_Q16 = -lambda_Q16
nom_Q16 = SKP_SMLAWB(SKP_FIX_CONST(1.0, 16), -lambda_Q16, lambda_Q16)
den_Q24 = SKP_SMLAWB(SKP_FIX_CONST(1.0, 24), coefs_syn_Q24[0], lambda_Q16)
gain_syn_Q16 = SKP_DIV32_varQ(nom_Q16, den_Q24, 24)
den_Q24 = SKP_SMLAWB(SKP_FIX_CONST(1.0, 24), coefs_ana_Q24[0], lambda_Q16)
gain_ana_Q16 = SKP_DIV32_varQ(nom_Q16, den_Q24, 24)
for i = 0; i < order; i++ {
coefs_syn_Q24[i] = SKP_SMULWW(gain_syn_Q16, coefs_syn_Q24[i])
coefs_ana_Q24[i] = SKP_SMULWW(gain_ana_Q16, coefs_ana_Q24[i])
}
}
SKP_assert(0)
}
func SKP_Silk_noise_shape_analysis_FIX(psEnc *SKP_Silk_encoder_state_FIX, psEncCtrl *SKP_Silk_encoder_control_FIX, pitch_res *int16, x []int16) {
var (
psShapeSt *SKP_Silk_shape_state_FIX = &psEnc.SShape
k int32
i int32
nSamples int32
Qnrg int32
b_Q14 int32
warping_Q16 int32
scale int32 = 0
SNR_adj_dB_Q7 int32
HarmBoost_Q16 int32
HarmShapeGain_Q16 int32
Tilt_Q16 int32
tmp32 int32
nrg int32
pre_nrg_Q30 int32
log_energy_Q7 int32
log_energy_prev_Q7 int32
energy_variation_Q7 int32
delta_Q16 int32
BWExp1_Q16 int32
BWExp2_Q16 int32
gain_mult_Q16 int32
gain_add_Q16 int32
strength_Q16 int32
b_Q8 int32
auto_corr [17]int32
refl_coef_Q16 [16]int32
AR1_Q24 [16]int32
AR2_Q24 [16]int32
x_windowed [360]int16
x_ptr []int16
pitch_res_ptr []int16
)
x_ptr = ([]int16)((*int16)(unsafe.Add(unsafe.Pointer(&x[0]), -int(unsafe.Sizeof(int16(0))*uintptr(psEnc.SCmn.La_shape)))))
psEncCtrl.Current_SNR_dB_Q7 = psEnc.SNR_dB_Q7 - SKP_SMULWB(psEnc.BufferedInChannel_ms<<7, SKP_FIX_CONST(0.05, 16))
if psEnc.Speech_activity_Q8 > SKP_FIX_CONST(0.5, 8) {
psEncCtrl.Current_SNR_dB_Q7 -= psEnc.InBandFEC_SNR_comp_Q8 >> 1
}
psEncCtrl.Input_quality_Q14 = (psEncCtrl.Input_quality_bands_Q15[0] + psEncCtrl.Input_quality_bands_Q15[1]) >> 2
psEncCtrl.Coding_quality_Q14 = SKP_Silk_sigm_Q15(SKP_RSHIFT_ROUND(psEncCtrl.Current_SNR_dB_Q7-SKP_FIX_CONST(18.0, 7), 4)) >> 1
b_Q8 = SKP_FIX_CONST(1.0, 8) - psEnc.Speech_activity_Q8
b_Q8 = SKP_SMULWB(b_Q8<<8, b_Q8)
SNR_adj_dB_Q7 = SKP_SMLAWB(psEncCtrl.Current_SNR_dB_Q7, SKP_SMULBB(SKP_FIX_CONST(-4.0, 7)>>(4+1), b_Q8), SKP_SMULWB(SKP_FIX_CONST(1.0, 14)+psEncCtrl.Input_quality_Q14, psEncCtrl.Coding_quality_Q14))
if psEncCtrl.SCmn.Sigtype == SIG_TYPE_VOICED {
SNR_adj_dB_Q7 = SKP_SMLAWB(SNR_adj_dB_Q7, SKP_FIX_CONST(2.0, 8), psEnc.LTPCorr_Q15)
} else {
SNR_adj_dB_Q7 = SKP_SMLAWB(SNR_adj_dB_Q7, SKP_SMLAWB(SKP_FIX_CONST(6.0, 9), -SKP_FIX_CONST(0.4, 18), psEncCtrl.Current_SNR_dB_Q7), SKP_FIX_CONST(1.0, 14)-psEncCtrl.Input_quality_Q14)
}
if psEncCtrl.SCmn.Sigtype == SIG_TYPE_VOICED {
psEncCtrl.SCmn.QuantOffsetType = 0
psEncCtrl.Sparseness_Q8 = 0
} else {
nSamples = psEnc.SCmn.Fs_kHz << 1
energy_variation_Q7 = 0
log_energy_prev_Q7 = 0
pitch_res_ptr = ([]int16)(pitch_res)
for k = 0; k < FRAME_LENGTH_MS/2; k++ {
SKP_Silk_sum_sqr_shift(&nrg, &scale, pitch_res_ptr, nSamples)
nrg += nSamples >> scale
log_energy_Q7 = SKP_Silk_lin2log(nrg)
if k > 0 {
energy_variation_Q7 += int32(SKP_abs(int64(log_energy_Q7 - log_energy_prev_Q7)))
}
log_energy_prev_Q7 = log_energy_Q7
pitch_res_ptr += ([]int16)(nSamples)
}
psEncCtrl.Sparseness_Q8 = SKP_Silk_sigm_Q15(SKP_SMULWB(energy_variation_Q7-SKP_FIX_CONST(5.0, 7), SKP_FIX_CONST(0.1, 16))) >> 7
if psEncCtrl.Sparseness_Q8 > SKP_FIX_CONST(0.75, 8) {
psEncCtrl.SCmn.QuantOffsetType = 0
} else {
psEncCtrl.SCmn.QuantOffsetType = 1
}
SNR_adj_dB_Q7 = SKP_SMLAWB(SNR_adj_dB_Q7, SKP_FIX_CONST(2.0, 15), psEncCtrl.Sparseness_Q8-SKP_FIX_CONST(0.5, 8))
}
strength_Q16 = SKP_SMULWB(psEncCtrl.PredGain_Q16, SKP_FIX_CONST(0.001, 16))
BWExp1_Q16 = func() int32 {
BWExp2_Q16 = SKP_DIV32_varQ(SKP_FIX_CONST(0.95, 16), SKP_SMLAWW(SKP_FIX_CONST(1.0, 16), strength_Q16, strength_Q16), 16)
return BWExp2_Q16
}()
delta_Q16 = SKP_SMULWB(SKP_FIX_CONST(1.0, 16)-SKP_SMULBB(3, psEncCtrl.Coding_quality_Q14), SKP_FIX_CONST(0.01, 16))
BWExp1_Q16 = BWExp1_Q16 - delta_Q16
BWExp2_Q16 = BWExp2_Q16 + delta_Q16
BWExp1_Q16 = (BWExp1_Q16 << 14) / (BWExp2_Q16 >> 2)
if psEnc.SCmn.Warping_Q16 > 0 {
warping_Q16 = SKP_SMLAWB(psEnc.SCmn.Warping_Q16, psEncCtrl.Coding_quality_Q14, SKP_FIX_CONST(0.01, 18))
} else {
warping_Q16 = 0
}
for k = 0; k < NB_SUBFR; k++ {
var (
shift int32
slope_part int32
flat_part int32
)
flat_part = psEnc.SCmn.Fs_kHz * 5
slope_part = (psEnc.SCmn.ShapeWinLength - flat_part) >> 1
SKP_Silk_apply_sine_window(x_windowed[:], x_ptr, 1, slope_part)
shift = slope_part
memcpy(unsafe.Pointer(&x_windowed[shift]), unsafe.Pointer(&x_ptr[shift]), size_t(uintptr(flat_part)*unsafe.Sizeof(int16(0))))
shift += flat_part
SKP_Silk_apply_sine_window(([]int16)(&x_windowed[shift]), ([]int16)(&x_ptr[shift]), 2, slope_part)
x_ptr += ([]int16)(psEnc.SCmn.Subfr_length)
if psEnc.SCmn.Warping_Q16 > 0 {
SKP_Silk_warped_autocorrelation_FIX(auto_corr[:], &scale, x_windowed[:], int16(warping_Q16), psEnc.SCmn.ShapeWinLength, psEnc.SCmn.ShapingLPCOrder)
} else {
SKP_Silk_autocorr(auto_corr[:], &scale, x_windowed[:], psEnc.SCmn.ShapeWinLength, psEnc.SCmn.ShapingLPCOrder+1)
}
auto_corr[0] = (auto_corr[0]) + SKP_max_32(SKP_SMULWB((auto_corr[0])>>4, SKP_FIX_CONST(1e-05, 20)), 1)
nrg = SKP_Silk_schur64(refl_coef_Q16[:], auto_corr[:], psEnc.SCmn.ShapingLPCOrder)
SKP_assert(nrg >= 0)
SKP_Silk_k2a_Q16(AR2_Q24[:], refl_coef_Q16[:], psEnc.SCmn.ShapingLPCOrder)
Qnrg = -scale
SKP_assert(int64(Qnrg) >= -12)
SKP_assert(Qnrg <= 30)
if Qnrg&1 != 0 {
Qnrg -= 1
nrg >>= 1
}
tmp32 = SKP_Silk_SQRT_APPROX(nrg)
Qnrg >>= 1
psEncCtrl.Gains_Q16[k] = SKP_LSHIFT_SAT32(tmp32, 16-Qnrg)
if psEnc.SCmn.Warping_Q16 > 0 {
gain_mult_Q16 = warped_gain(AR2_Q24[:], warping_Q16, psEnc.SCmn.ShapingLPCOrder)
SKP_assert(psEncCtrl.Gains_Q16[k] >= 0)
psEncCtrl.Gains_Q16[k] = SKP_SMULWW(psEncCtrl.Gains_Q16[k], gain_mult_Q16)
if psEncCtrl.Gains_Q16[k] < 0 {
psEncCtrl.Gains_Q16[k] = SKP_int32_MAX
}
}
SKP_Silk_bwexpander_32(AR2_Q24[:], psEnc.SCmn.ShapingLPCOrder, BWExp2_Q16)
memcpy(unsafe.Pointer(&AR1_Q24[0]), unsafe.Pointer(&AR2_Q24[0]), size_t(uintptr(psEnc.SCmn.ShapingLPCOrder)*unsafe.Sizeof(int32(0))))
SKP_assert(BWExp1_Q16 <= SKP_FIX_CONST(1.0, 16))
SKP_Silk_bwexpander_32(AR1_Q24[:], psEnc.SCmn.ShapingLPCOrder, BWExp1_Q16)
SKP_Silk_LPC_inverse_pred_gain_Q24(&pre_nrg_Q30, AR2_Q24[:], psEnc.SCmn.ShapingLPCOrder)
SKP_Silk_LPC_inverse_pred_gain_Q24(&nrg, AR1_Q24[:], psEnc.SCmn.ShapingLPCOrder)
pre_nrg_Q30 = SKP_SMULWB(pre_nrg_Q30, SKP_FIX_CONST(0.7, 15)) << 1
psEncCtrl.GainsPre_Q14[k] = SKP_FIX_CONST(0.3, 14) + SKP_DIV32_varQ(pre_nrg_Q30, nrg, 14)
limit_warped_coefs(AR2_Q24[:], AR1_Q24[:], warping_Q16, SKP_FIX_CONST(3.999, 24), psEnc.SCmn.ShapingLPCOrder)
for i = 0; i < psEnc.SCmn.ShapingLPCOrder; i++ {
psEncCtrl.AR1_Q13[k*MAX_SHAPE_LPC_ORDER+i] = SKP_SAT16(SKP_RSHIFT_ROUND(AR1_Q24[i], 11))
psEncCtrl.AR2_Q13[k*MAX_SHAPE_LPC_ORDER+i] = SKP_SAT16(SKP_RSHIFT_ROUND(AR2_Q24[i], 11))
}
}
gain_mult_Q16 = SKP_Silk_log2lin(-SKP_SMLAWB(-SKP_FIX_CONST(16.0, 7), SNR_adj_dB_Q7, SKP_FIX_CONST(0.16, 16)))
gain_add_Q16 = SKP_Silk_log2lin(SKP_SMLAWB(SKP_FIX_CONST(16.0, 7), SKP_FIX_CONST(NOISE_FLOOR_dB, 7), SKP_FIX_CONST(0.16, 16)))
tmp32 = SKP_Silk_log2lin(SKP_SMLAWB(SKP_FIX_CONST(16.0, 7), SKP_FIX_CONST(-50.0, 7), SKP_FIX_CONST(0.16, 16)))
tmp32 = SKP_SMULWW(psEnc.AvgGain_Q16, tmp32)
gain_add_Q16 = SKP_ADD_SAT32(gain_add_Q16, tmp32)
SKP_assert(gain_mult_Q16 >= 0)
for k = 0; k < NB_SUBFR; k++ {
psEncCtrl.Gains_Q16[k] = SKP_SMULWW(psEncCtrl.Gains_Q16[k], gain_mult_Q16)
if psEncCtrl.Gains_Q16[k] < 0 {
psEncCtrl.Gains_Q16[k] = SKP_int32_MAX
}
}
for k = 0; k < NB_SUBFR; k++ {
psEncCtrl.Gains_Q16[k] = SKP_ADD_POS_SAT32(psEncCtrl.Gains_Q16[k], gain_add_Q16)
psEnc.AvgGain_Q16 = SKP_ADD_SAT32(psEnc.AvgGain_Q16, SKP_SMULWB(psEncCtrl.Gains_Q16[k]-psEnc.AvgGain_Q16, SKP_RSHIFT_ROUND(SKP_SMULBB(psEnc.Speech_activity_Q8, SKP_FIX_CONST(GAIN_SMOOTHING_COEF, 10)), 2)))
}
gain_mult_Q16 = SKP_FIX_CONST(1.0, 16) + SKP_RSHIFT_ROUND(SKP_FIX_CONST(INPUT_TILT, 26)+psEncCtrl.Coding_quality_Q14*SKP_FIX_CONST(HIGH_RATE_INPUT_TILT, 12), 10)
if psEncCtrl.Input_tilt_Q15 <= 0 && psEncCtrl.SCmn.Sigtype == SIG_TYPE_UNVOICED {
if psEnc.SCmn.Fs_kHz == 24 {
var essStrength_Q15 int32 = SKP_SMULWW(-psEncCtrl.Input_tilt_Q15, SKP_SMULBB(psEnc.Speech_activity_Q8, SKP_FIX_CONST(1.0, 8)-psEncCtrl.Sparseness_Q8))
tmp32 = SKP_Silk_log2lin(SKP_FIX_CONST(16.0, 7) - SKP_SMULWB(essStrength_Q15, SKP_SMULWB(SKP_FIX_CONST(DE_ESSER_COEF_SWB_dB, 7), SKP_FIX_CONST(0.16, 17))))
gain_mult_Q16 = SKP_SMULWW(gain_mult_Q16, tmp32)
} else if psEnc.SCmn.Fs_kHz == 16 {
var essStrength_Q15 int32 = SKP_SMULWW(-psEncCtrl.Input_tilt_Q15, SKP_SMULBB(psEnc.Speech_activity_Q8, SKP_FIX_CONST(1.0, 8)-psEncCtrl.Sparseness_Q8))
tmp32 = SKP_Silk_log2lin(SKP_FIX_CONST(16.0, 7) - SKP_SMULWB(essStrength_Q15, SKP_SMULWB(SKP_FIX_CONST(DE_ESSER_COEF_WB_dB, 7), SKP_FIX_CONST(0.16, 17))))
gain_mult_Q16 = SKP_SMULWW(gain_mult_Q16, tmp32)
} else {
SKP_assert(psEnc.SCmn.Fs_kHz == 12 || psEnc.SCmn.Fs_kHz == 8)
}
}
for k = 0; k < NB_SUBFR; k++ {
psEncCtrl.GainsPre_Q14[k] = SKP_SMULWB(gain_mult_Q16, psEncCtrl.GainsPre_Q14[k])
}
strength_Q16 = SKP_FIX_CONST(LOW_FREQ_SHAPING, 0) * (SKP_FIX_CONST(1.0, 16) + SKP_SMULBB(SKP_FIX_CONST(LOW_QUALITY_LOW_FREQ_SHAPING_DECR, 1), psEncCtrl.Input_quality_bands_Q15[0]-SKP_FIX_CONST(1.0, 15)))
if psEncCtrl.SCmn.Sigtype == SIG_TYPE_VOICED {
var fs_kHz_inv int32 = (SKP_FIX_CONST(0.2, 14) / psEnc.SCmn.Fs_kHz)
for k = 0; k < NB_SUBFR; k++ {
b_Q14 = fs_kHz_inv + SKP_FIX_CONST(3.0, 14)/(psEncCtrl.SCmn.PitchL[k])
psEncCtrl.LF_shp_Q14[k] = (SKP_FIX_CONST(1.0, 14) - b_Q14 - SKP_SMULWB(strength_Q16, b_Q14)) << 16
psEncCtrl.LF_shp_Q14[k] |= int32(uint16(int16(b_Q14 - SKP_FIX_CONST(1.0, 14))))
}
SKP_assert(SKP_FIX_CONST(HARM_HP_NOISE_COEF, 24) < SKP_FIX_CONST(0.5, 24))
Tilt_Q16 = -SKP_FIX_CONST(HP_NOISE_COEF, 16) - SKP_SMULWB(SKP_FIX_CONST(1.0, 16)-SKP_FIX_CONST(HP_NOISE_COEF, 16), SKP_SMULWB(SKP_FIX_CONST(HARM_HP_NOISE_COEF, 24), psEnc.Speech_activity_Q8))
} else {
b_Q14 = 0x5333 / psEnc.SCmn.Fs_kHz
psEncCtrl.LF_shp_Q14[0] = (SKP_FIX_CONST(1.0, 14) - b_Q14 - SKP_SMULWB(strength_Q16, SKP_SMULWB(SKP_FIX_CONST(0.6, 16), b_Q14))) << 16
psEncCtrl.LF_shp_Q14[0] |= int32(uint16(int16(b_Q14 - SKP_FIX_CONST(1.0, 14))))
for k = 1; k < NB_SUBFR; k++ {
psEncCtrl.LF_shp_Q14[k] = psEncCtrl.LF_shp_Q14[0]
}
Tilt_Q16 = -SKP_FIX_CONST(HP_NOISE_COEF, 16)
}
HarmBoost_Q16 = SKP_SMULWB(SKP_SMULWB(SKP_FIX_CONST(1.0, 17)-(psEncCtrl.Coding_quality_Q14<<3), psEnc.LTPCorr_Q15), SKP_FIX_CONST(LOW_RATE_HARMONIC_BOOST, 16))
HarmBoost_Q16 = SKP_SMLAWB(HarmBoost_Q16, SKP_FIX_CONST(1.0, 16)-(psEncCtrl.Input_quality_Q14<<2), SKP_FIX_CONST(LOW_INPUT_QUALITY_HARMONIC_BOOST, 16))
if USE_HARM_SHAPING != 0 && psEncCtrl.SCmn.Sigtype == SIG_TYPE_VOICED {
HarmShapeGain_Q16 = SKP_SMLAWB(SKP_FIX_CONST(HARMONIC_SHAPING, 16), SKP_FIX_CONST(1.0, 16)-SKP_SMULWB(SKP_FIX_CONST(1.0, 18)-(psEncCtrl.Coding_quality_Q14<<4), psEncCtrl.Input_quality_Q14), SKP_FIX_CONST(HIGH_RATE_OR_LOW_QUALITY_HARMONIC_SHAPING, 16))
HarmShapeGain_Q16 = SKP_SMULWB(HarmShapeGain_Q16<<1, SKP_Silk_SQRT_APPROX(psEnc.LTPCorr_Q15<<15))
} else {
HarmShapeGain_Q16 = 0
}
for k = 0; k < NB_SUBFR; k++ {
psShapeSt.HarmBoost_smth_Q16 = SKP_SMLAWB(psShapeSt.HarmBoost_smth_Q16, HarmBoost_Q16-psShapeSt.HarmBoost_smth_Q16, SKP_FIX_CONST(SUBFR_SMTH_COEF, 16))
psShapeSt.HarmShapeGain_smth_Q16 = SKP_SMLAWB(psShapeSt.HarmShapeGain_smth_Q16, HarmShapeGain_Q16-psShapeSt.HarmShapeGain_smth_Q16, SKP_FIX_CONST(SUBFR_SMTH_COEF, 16))
psShapeSt.Tilt_smth_Q16 = SKP_SMLAWB(psShapeSt.Tilt_smth_Q16, Tilt_Q16-psShapeSt.Tilt_smth_Q16, SKP_FIX_CONST(SUBFR_SMTH_COEF, 16))
psEncCtrl.HarmBoost_Q14[k] = SKP_RSHIFT_ROUND(psShapeSt.HarmBoost_smth_Q16, 2)
psEncCtrl.HarmShapeGain_Q14[k] = SKP_RSHIFT_ROUND(psShapeSt.HarmShapeGain_smth_Q16, 2)
psEncCtrl.Tilt_Q14[k] = SKP_RSHIFT_ROUND(psShapeSt.Tilt_smth_Q16, 2)
}
}