/* g729a_lpc - Decompiled by JODE
* Visit http://jode.sourceforge.net/
*/
package javaforce.codec.g729a;
final class g729a_lpc implements g729a_constants {
static void g729a_lp_analysis(float[] fs, g729a_encode_speech var_g729a_encode_speech) {
float[] fs_0_ = new float[240];
float[] fs_1_ = new float[11];
float[] fs_2_ = new float[10];
float[] fs_3_ = new float[5];
float[] fs_4_ = new float[5];
g729a_window(fs_0_, 0, g729a_tables.g729a_wlp, 0,
var_g729a_encode_speech.past_subframe_3);
g729a_window(fs_0_, 40, g729a_tables.g729a_wlp, 40,
var_g729a_encode_speech.past_subframe_2);
g729a_window(fs_0_, 80, g729a_tables.g729a_wlp, 80,
var_g729a_encode_speech.past_subframe_1);
g729a_window(fs_0_, 120, g729a_tables.g729a_wlp, 120,
var_g729a_encode_speech.present_subframe_1);
g729a_window(fs_0_, 160, g729a_tables.g729a_wlp, 160,
var_g729a_encode_speech.present_subframe_2);
g729a_window(fs_0_, 200, g729a_tables.g729a_wlp, 200,
var_g729a_encode_speech.future_subframe);
g729a_utils.g729a_corel_11(fs_1_, fs_0_);
if (fs_1_[0] < 1.0F) {
fs_1_[0] = 1.0F;
}
for (int i = 0; i <= 10; i++) {
fs_1_[i] *= g729a_tables.g729a_wlag[i];
}
float f = -fs_1_[1] / fs_1_[0];
float f_5_ = f;
float f_6_ = fs_1_[0] * (1.0F - f * f);
if (!(f_6_ <= 0.0F)) {
f = -(fs_1_[2] + f_5_ * fs_1_[1]) / f_6_;
f_5_ += f * f_5_;
float f_7_ = f;
f_6_ *= 1.0F - f * f;
if (!(f_6_ <= 0.0F)) {
f = -(fs_1_[3] + f_5_ * fs_1_[2] + f_7_ * fs_1_[1]) / f_6_;
float f_8_ = f_5_;
f_5_ += f * f_7_;
f_7_ += f * f_8_;
float f_9_ = f;
f_6_ *= 1.0F - f * f;
if (!(f_6_ <= 0.0F)) {
f = -(fs_1_[4] + f_5_ * fs_1_[3] + f_7_ * fs_1_[2]
+ f_9_ * fs_1_[1]) / f_6_;
f_8_ = f_5_;
f_5_ += f * f_9_;
f_7_ += f * f_7_;
f_9_ += f * f_8_;
float f_10_ = f;
f_6_ *= 1.0F - f * f;
if (!(f_6_ <= 0.0F)) {
f = -(fs_1_[5] + f_5_ * fs_1_[4] + f_7_ * fs_1_[3]
+ f_9_ * fs_1_[2] + f_10_ * fs_1_[1]) / f_6_;
f_8_ = f_5_;
f_5_ += f * f_10_;
f_10_ += f * f_8_;
f_8_ = f_7_;
f_7_ += f * f_9_;
f_9_ += f * f_8_;
float f_11_ = f;
f_6_ *= 1.0F - f * f;
if (!(f_6_ <= 0.0F)) {
f = -(fs_1_[6] + f_5_ * fs_1_[5] + f_7_ * fs_1_[4]
+ f_9_ * fs_1_[3] + f_10_ * fs_1_[2]
+ f_11_ * fs_1_[1]) / f_6_;
f_8_ = f_5_;
f_5_ += f * f_11_;
f_11_ += f * f_8_;
f_8_ = f_7_;
f_7_ += f * f_10_;
f_10_ += f * f_8_;
f_9_ += f * f_9_;
float f_12_ = f;
f_6_ *= 1.0F - f * f;
if (!(f_6_ <= 0.0F)) {
f = -(fs_1_[7] + f_5_ * fs_1_[6]
+ f_7_ * fs_1_[5] + f_9_ * fs_1_[4]
+ f_10_ * fs_1_[3] + f_11_ * fs_1_[2]
+ f_12_ * fs_1_[1]) / f_6_;
f_8_ = f_5_;
f_5_ += f * f_12_;
f_12_ += f * f_8_;
f_8_ = f_7_;
f_7_ += f * f_11_;
f_11_ += f * f_8_;
f_8_ = f_9_;
f_9_ += f * f_10_;
f_10_ += f * f_8_;
float f_13_ = f;
f_6_ *= 1.0F - f * f;
if (!(f_6_ <= 0.0F)) {
f = -(fs_1_[8] + f_5_ * fs_1_[7]
+ f_7_ * fs_1_[6] + f_9_ * fs_1_[5]
+ f_10_ * fs_1_[4] + f_11_ * fs_1_[3]
+ f_12_ * fs_1_[2]
+ f_13_ * fs_1_[1]) / f_6_;
f_8_ = f_5_;
f_5_ += f * f_13_;
f_13_ += f * f_8_;
f_8_ = f_7_;
f_7_ += f * f_12_;
f_12_ += f * f_8_;
f_8_ = f_9_;
f_9_ += f * f_11_;
f_11_ += f * f_8_;
f_10_ += f * f_10_;
float f_14_ = f;
f_6_ *= 1.0F - f * f;
if (!(f_6_ <= 0.0F)) {
f = -(fs_1_[9] + f_5_ * fs_1_[8]
+ f_7_ * fs_1_[7]
+ f_9_ * fs_1_[6]
+ f_10_ * fs_1_[5]
+ f_11_ * fs_1_[4]
+ f_12_ * fs_1_[3]
+ f_13_ * fs_1_[2]
+ f_14_ * fs_1_[1]) / f_6_;
f_8_ = f_5_;
f_5_ += f * f_14_;
f_14_ += f * f_8_;
f_8_ = f_7_;
f_7_ += f * f_13_;
f_13_ += f * f_8_;
f_8_ = f_9_;
f_9_ += f * f_12_;
f_12_ += f * f_8_;
f_8_ = f_10_;
f_10_ += f * f_11_;
f_11_ += f * f_8_;
float f_15_ = f;
f_6_ *= 1.0F - f * f;
if (!(f_6_ <= 0.0F)) {
f = -(fs_1_[10] + f_5_ * fs_1_[9]
+ f_7_ * fs_1_[8]
+ f_9_ * fs_1_[7]
+ f_10_ * fs_1_[6]
+ f_11_ * fs_1_[5]
+ f_12_ * fs_1_[4]
+ f_13_ * fs_1_[3]
+ f_14_ * fs_1_[2]
+ f_15_ * fs_1_[1]) / f_6_;
f_8_ = f_5_;
f_5_ += f * f_15_;
f_15_ += f * f_8_;
f_8_ = f_7_;
f_7_ += f * f_14_;
f_14_ += f * f_8_;
f_8_ = f_9_;
f_9_ += f * f_13_;
f_13_ += f * f_8_;
f_8_ = f_10_;
f_10_ += f * f_12_;
f_12_ += f * f_8_;
f_11_ += f * f_11_;
float f_16_ = f;
f_6_ *= 1.0F - f * f;
if (!(f_6_ <= 0.0F)) {
float f_17_ = f_5_ + f_16_ - 1.0F;
float f_18_ = f_7_ + f_15_ - f_17_;
float f_19_ = f_9_ + f_14_ - f_18_;
float f_20_ = f_10_ + f_13_ - f_19_;
float f_21_ = f_11_ + f_12_ - f_20_;
float f_22_ = 0.5F * f_21_;
fs_3_[0] = f_17_;
fs_3_[1] = f_18_;
fs_3_[2] = f_19_;
fs_3_[3] = f_20_;
fs_3_[4] = f_22_;
float f_23_ = f_5_ - f_16_ + 1.0F;
float f_24_ = f_7_ - f_15_ + f_23_;
float f_25_ = f_9_ - f_14_ + f_24_;
float f_26_ = f_10_ - f_13_ + f_25_;
float f_27_ = f_11_ - f_12_ + f_26_;
float f_28_ = 0.5F * f_27_;
fs_4_[0] = f_23_;
fs_4_[1] = f_24_;
fs_4_[2] = f_25_;
fs_4_[3] = f_26_;
fs_4_[4] = f_28_;
boolean bool = false;
float[] fs_29_ = fs_3_;
int i = 0;
float f_30_ = 1.0F;
f_30_ = (g729a_tables.g729a_tab[0]);
float f_31_ = g729a_chebps(f_30_,
fs_29_);
for (int i_32_ = 1; i_32_ < 51;
i_32_++) {
float f_33_ = f_30_;
float f_34_ = f_31_;
f_30_ = (g729a_tables.g729a_tab[i_32_]);
f_31_ = g729a_chebps(f_30_,
fs_29_);
if (f_34_ * f_31_
<= 0.0F) {
for (int i_35_ = 0;
i_35_ < 2;
i_35_++) {
float f_36_ = ((f_33_
+ f_30_)
/ 2.0F);
float f_37_ = (g729a_chebps(f_36_,
fs_29_));
if (f_31_ * f_37_
<= 0.0F) {
f_34_ = f_37_;
f_33_ = f_36_;
} else {
f_31_ = f_37_;
f_30_ = f_36_;
}
}
float f_38_;
if (f_34_ == f_31_) {
f_38_ = f_30_;
} else {
f_38_ = (f_30_
- (f_31_
* (f_33_
- f_30_)
/ (f_34_
- f_31_)));
}
fs_2_[i] = f_38_;
if (++i >= 10) {
break;
}
f_30_ = f_38_;
if (!bool) {
bool = true;
fs_29_ = fs_4_;
} else {
bool = false;
fs_29_ = fs_3_;
}
f_31_ = (g729a_chebps(f_30_,
fs_29_));
}
}
if (i >= 10) {
for (int i_39_ = 0;
i_39_ < 10; i_39_++) {
fs[i_39_] = fs_2_[i_39_];
}
}
}
}
}
}
}
}
}
}
}
}
}
static void g729a_window(float[] fs, int i, float[] fs_40_, int i_41_,
float[] fs_42_) {
for (int i_43_ = 0; i_43_ < 40; i_43_++) {
fs[i_43_ + i] = fs_42_[i_43_] * fs_40_[i_43_ + i_41_];
}
}
static float g729a_chebps(float f, float[] fs) {
float f_44_ = 2.0F * f;
float f_45_ = f_44_ + fs[0];
float f_46_ = f_44_ * f_45_ - 1.0F + fs[1];
float f_47_ = f_44_ * f_46_ - f_45_ + fs[2];
float f_48_ = f_44_ * f_47_ - f_46_ + fs[3];
float f_49_ = f * f_48_ - f_47_ + fs[4];
return f_49_;
}
}