private int reduce_bit_usage(final LameInternalFlags gfc, final int gr, final int ch) {
final GrInfo cod_info = gfc.l3_side.tt[gr][ch];
// try some better scalefac storage
tak.best_scalefac_store(gfc, gr, ch, gfc.l3_side);
// best huffman_divide may save some bits too
if (gfc.use_best_huffman == 1) tak.best_huffman_divide(gfc, cod_info);
return cod_info.part2_3_length + cod_info.part2_length;
}
private void bitcount(final algo_t that) {
boolean rc;
if (that.gfc.mode_gr == 2) {
rc = tak.scale_bitcount(that.cod_info);
} else {
rc = tak.scale_bitcount_lsf(that.gfc, that.cod_info);
}
if (!rc) {
return;
}
/* this should not happen due to the way the scalefactors are selected */
throw new RuntimeException("INTERNAL ERROR IN VBR NEW CODE (986), please send bug report");
}
private int quantizeAndCountBits(final algo_t that) {
quantize_x34(that);
that.cod_info.part2_3_length = tak.noquant_count_bits(that.gfc, that.cod_info, null);
return that.cod_info.part2_3_length;
}
/** initialization for iteration_loop */
public final void iteration_init(final LameGlobalFlags gfp) {
final LameInternalFlags gfc = gfp.internal_flags;
final IIISideInfo l3_side = gfc.l3_side;
int i;
if (gfc.iteration_init_init == 0) {
gfc.iteration_init_init = 1;
l3_side.main_data_begin = 0;
compute_ath(gfp);
pow43[0] = 0.0f;
for (i = 1; i < PRECALC_SIZE; i++) pow43[i] = (float) Math.pow((float) i, 4.0 / 3.0);
for (i = 0; i < PRECALC_SIZE - 1; i++)
adj43[i] = (float) ((i + 1) - Math.pow(0.5 * (pow43[i] + pow43[i + 1]), 0.75));
adj43[i] = 0.5f;
for (i = 0; i < Q_MAX; i++) ipow20[i] = (float) Math.pow(2.0, (i - 210) * -0.1875);
for (i = 0; i <= Q_MAX + Q_MAX2; i++)
pow20[i] = (float) Math.pow(2.0, (i - 210 - Q_MAX2) * 0.25);
tak.huffman_init(gfc);
{
float bass, alto, treble, sfb21;
i = (gfp.exp_nspsytune >> 2) & 63;
if (i >= 32) i -= 64;
bass = (float) Math.pow(10, i / 4.0 / 10.0);
i = (gfp.exp_nspsytune >> 8) & 63;
if (i >= 32) i -= 64;
alto = (float) Math.pow(10, i / 4.0 / 10.0);
i = (gfp.exp_nspsytune >> 14) & 63;
if (i >= 32) i -= 64;
treble = (float) Math.pow(10, i / 4.0 / 10.0);
/*
* to be compatible with Naoki's original code, the next 6 bits
* define only the amount of changing treble for sfb21
*/
i = (gfp.exp_nspsytune >> 20) & 63;
if (i >= 32) i -= 64;
sfb21 = treble * (float) Math.pow(10, i / 4.0 / 10.0);
for (i = 0; i < Encoder.SBMAX_l; i++) {
float f;
if (i <= 6) f = bass;
else if (i <= 13) f = alto;
else if (i <= 20) f = treble;
else f = sfb21;
gfc.nsPsy.longfact[i] = f;
}
for (i = 0; i < Encoder.SBMAX_s; i++) {
float f;
if (i <= 5) f = bass;
else if (i <= 10) f = alto;
else if (i <= 11) f = treble;
else f = sfb21;
gfc.nsPsy.shortfact[i] = f;
}
}
}
}
