/**
* Codebook Search Unquantification (Split Shape).
*
* @param exc - excitation array.
* @param es - position in excitation array.
* @param nsf - number of samples in subframe.
* @param bits - Speex bits buffer.
*/
public final void unquant(float[] exc, int es, int nsf, @NotNull Bits bits) {
int i, j;
/* Decode codewords and gains */
for (i = 0; i < nb_subvect; i++) {
if (have_sign != 0) signs[i] = bits.unpack(1);
else signs[i] = 0;
ind[i] = bits.unpack(shape_bits);
}
/* Compute decoded excitation */
for (i = 0; i < nb_subvect; i++) {
float s = 1.0f;
if (signs[i] != 0) s = -1.0f;
for (j = 0; j < subvect_size; j++) {
exc[es + subvect_size * i + j] +=
s * 0.03125f * (float) shape_cb[ind[i] * subvect_size + j];
}
}
}
