internal void trancate_smallspectrums(LameInternalFlags gfc, GrInfo gi, float[] l3_xmin, float[] work)
{
var distort = new float[L3Side.SFBMAX];
if (0 == (gfc.substep_shaping & 4) && gi.block_type == Encoder.SHORT_TYPE ||
(gfc.substep_shaping & 0x80) != 0)
{
return;
}
qupvt.calc_noise(gi, l3_xmin, distort, new CalcNoiseResult(), null);
for (var jj = 0; jj < 576; jj++)
{
var xr = 0.0f;
if (gi.l3_enc[jj] != 0)
{
xr = Math.Abs(gi.xr[jj]);
}
work[jj] = xr;
}
var j = 0;
var sfb = 8;
if (gi.block_type == Encoder.SHORT_TYPE)
{
sfb = 6;
}
do
{
float allowedNoise, trancateThreshold;
int nsame, start;
var width = gi.width[sfb];
j += width;
if (distort[sfb] >= 1.0)
{
continue;
}
Arrays.Sort(work, j - width, width);
if (BitStream.EQ(work[j - 1], 0.0f))
{
continue;
}
allowedNoise = (1.0f - distort[sfb]) * l3_xmin[sfb];
trancateThreshold = 0.0f;
start = 0;
do
{
float noise;
for (nsame = 1; start + nsame < width; nsame++)
{
if (BitStream.NEQ(work[start + j - width], work[start + j + nsame - width]))
{
break;
}
}
noise = work[start + j - width] * work[start + j - width] * nsame;
if (allowedNoise < noise)
{
if (start != 0)
{
trancateThreshold = work[start + j - width - 1];
}
break;
}
allowedNoise -= noise;
start += nsame;
}while (start < width);
if (BitStream.EQ(trancateThreshold, 0.0f))
{
continue;
}
do
{
if (Math.Abs(gi.xr[j - width]) <= trancateThreshold)
{
gi.l3_enc[j - width] = 0;
}
}while (--width > 0);
}while (++sfb < gi.psymax);
gi.part2_3_length = tk.noquant_count_bits(gfc, gi, null);
}
private int quantizeAndCountBits(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);
}
