/*
* 11/19/04 1.0 moved to LGPL.
*
* 18/06/01 Michael Scheerer, Fixed bugs which causes
* negative indexes in method huffmann_decode and in method
* dequanisize_sample.
*
* 16/07/01 Michael Scheerer, Catched a bug in method
* huffmann_decode, which causes an outOfIndexException.
* Cause : Indexnumber of 24 at SfBandIndex,
* which has only a length of 22. I have simply and dirty
* fixed the index to <= 22, because I'm not really be able
* to fix the bug. The Indexnumber is taken from the MP3
* file and the origin Ma-Player with the same code works
* well.
*
* 02/19/99 Java Conversion by E.B, javalayer@javazoom.net
*-----------------------------------------------------------------------
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Library General Public License as published
* by the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*----------------------------------------------------------------------
*/
package audio.javazoom.jl.decoder;
/**
* Class Implementing Layer 3 Decoder.
*
* @since 0.0
*/
final class LayerIIIDecoder implements FrameDecoder
{
final double d43 = (4.0/3.0);
public int[] scalefac_buffer;
// MDM: removed, as this wasn't being used.
//private float CheckSumOut1d = 0.0f;
private int CheckSumHuff = 0;
private int[] is_1d;
private float[][][] ro;
private float[][][] lr;
private float[] out_1d;
private float[][] prevblck;
private float[][] k;
private int[] nonzero;
private Bitstream stream;
private Header header;
private SynthesisFilter filter1, filter2;
private Obuffer buffer;
private int which_channels;
private BitReserve br;
private III_side_info_t si;
private temporaire2[] III_scalefac_t;
private temporaire2[] scalefac;
// private III_scalefac_t scalefac;
private int max_gr;
private int frame_start;
private int part2_start;
private int channels;
private int first_channel;
private int last_channel;
private int sfreq;
/**
* Constructor.
*/
// REVIEW: these constructor arguments should be moved to the
// decodeFrame() method, where possible, so that one
public LayerIIIDecoder(Bitstream stream0, Header header0,
SynthesisFilter filtera, SynthesisFilter filterb,
Obuffer buffer0, int which_ch0)
{
huffcodetab.inithuff();
is_1d = new int[SBLIMIT*SSLIMIT+4];
ro = new float[2][SBLIMIT][SSLIMIT];
lr = new float[2][SBLIMIT][SSLIMIT];
out_1d = new float[SBLIMIT*SSLIMIT];
prevblck = new float[2][SBLIMIT*SSLIMIT];
k = new float[2][SBLIMIT*SSLIMIT];
nonzero = new int[2];
//III_scalefact_t
III_scalefac_t = new temporaire2[2];
III_scalefac_t[0] = new temporaire2();
III_scalefac_t[1] = new temporaire2();
scalefac = III_scalefac_t;
// L3TABLE INIT
sfBandIndex = new SBI[9]; // SZD: MPEG2.5 +3 indices
int[] l0 = {0,6,12,18,24,30,36,44,54,66,80,96,116,140,168,200,238,284,336,396,464,522,576};
int[] s0 = {0,4,8,12,18,24,32,42,56,74,100,132,174,192};
int[] l1 = {0,6,12,18,24,30,36,44,54,66,80,96,114,136,162,194,232,278,330,394,464,540,576};
int[] s1 = {0,4,8,12,18,26,36,48,62,80,104,136,180,192};
int[] l2 = {0,6,12,18,24,30,36,44,54,66,80,96,116,140,168,200,238,284,336,396,464,522,576};
int[] s2 = {0,4,8,12,18,26,36,48,62,80,104,134,174,192};
int[] l3 = {0,4,8,12,16,20,24,30,36,44,52,62,74,90,110,134,162,196,238,288,342,418,576};
int[] s3 = {0,4,8,12,16,22,30,40,52,66,84,106,136,192};
int[] l4 = {0,4,8,12,16,20,24,30,36,42,50,60,72,88,106,128,156,190,230,276,330,384,576};
int[] s4 = {0,4,8,12,16,22,28,38,50,64,80,100,126,192};
int[] l5 = {0,4,8,12,16,20,24,30,36,44,54,66,82,102,126,156,194,240,296,364,448,550,576};
int[] s5 = {0,4,8,12,16,22,30,42,58,78,104,138,180,192};
// SZD: MPEG2.5
int[] l6 = {0,6,12,18,24,30,36,44,54,66,80,96,116,140,168,200,238,284,336,396,464,522,576};
int[] s6 = {0,4,8,12,18,26,36,48,62,80,104,134,174,192};
int[] l7 = {0,6,12,18,24,30,36,44,54,66,80,96,116,140,168,200,238,284,336,396,464,522,576};
int[] s7 = {0,4,8,12,18,26,36,48,62,80,104,134,174,192};
int[] l8 = {0,12,24,36,48,60,72,88,108,132,160,192,232,280,336,400,476,566,568,570,572,574,576};
int[] s8 = {0,8,16,24,36,52,72,96,124,160,162,164,166,192};
sfBandIndex[0]= new SBI(l0,s0);
sfBandIndex[1]= new SBI(l1,s1);
sfBandIndex[2]= new SBI(l2,s2);
sfBandIndex[3]= new SBI(l3,s3);
sfBandIndex[4]= new SBI(l4,s4);
sfBandIndex[5]= new SBI(l5,s5);
//SZD: MPEG2.5
sfBandIndex[6]= new SBI(l6,s6);
sfBandIndex[7]= new SBI(l7,s7);
sfBandIndex[8]= new SBI(l8,s8);
// END OF L3TABLE INIT
if(reorder_table == null) { // SZD: generate LUT
reorder_table = new int[9][];
for(int i = 0; i < 9; i++)
reorder_table[i] = reorder(sfBandIndex[i].s);
}
// Sftable
int[] ll0 = {0, 6, 11, 16, 21};
int[] ss0 = {0, 6, 12};
sftable = new Sftable(ll0,ss0);
// END OF Sftable
// scalefac_buffer
scalefac_buffer = new int[54];
// END OF scalefac_buffer
stream = stream0;
header = header0;
filter1 = filtera;
filter2 = filterb;
buffer = buffer0;
which_channels = which_ch0;
frame_start = 0;
channels = (header.mode() == Header.SINGLE_CHANNEL) ? 1 : 2;
max_gr = (header.version() == Header.MPEG1) ? 2 : 1;
sfreq = header.sample_frequency() +
((header.version() == Header.MPEG1) ? 3 :
(header.version() == Header.MPEG25_LSF) ? 6 : 0); // SZD
if (channels == 2)
{
switch (which_channels)
{
case OutputChannels.LEFT_CHANNEL:
case OutputChannels.DOWNMIX_CHANNELS:
first_channel = last_channel = 0;
break;
case OutputChannels.RIGHT_CHANNEL:
first_channel = last_channel = 1;
break;
case OutputChannels.BOTH_CHANNELS:
default:
first_channel = 0;
last_channel = 1;
break;
}
}
else
{
first_channel = last_channel = 0;
}
for(int ch=0;ch<2;ch++)
for (int j=0; j<576; j++)
prevblck[ch][j] = 0.0f;
nonzero[0] = nonzero[1] = 576;
br = new BitReserve();
si = new III_side_info_t();
}
/**
* Notify decoder that a seek is being made.
*/
public void seek_notify()
{
frame_start = 0;
for(int ch=0;ch<2;ch++)
for (int j=0; j<576; j++)
prevblck[ch][j] = 0.0f;
br = new BitReserve();
}
public void decodeFrame()
{
decode();
}
/**
* Decode one frame, filling the buffer with the output samples.
*/
// subband samples are buffered and passed to the
// SynthesisFilter in one go.
private float[] samples1 = new float[32];
private float[] samples2 = new float[32];
public void decode()
{
int nSlots = header.slots();
int flush_main;
int gr, ch, ss, sb, sb18;
int main_data_end;
int bytes_to_discard;
int i;
get_side_info();
for (i=0; i<nSlots; i++)
br.hputbuf(stream.get_bits(8));
main_data_end = br.hsstell() >>> 3; // of previous frame
if ((flush_main = (br.hsstell() & 7)) != 0) {
br.hgetbits(8 - flush_main);
main_data_end++;
}
bytes_to_discard = frame_start - main_data_end
- si.main_data_begin;
frame_start += nSlots;
if (bytes_to_discard < 0)
return;
if (main_data_end > 4096) {
frame_start -= 4096;
br.rewindNbytes(4096);
}
for (; bytes_to_discard > 0; bytes_to_discard--)
br.hgetbits(8);
for (gr=0;gr<max_gr;gr++) {
for (ch=0; ch<channels; ch++) {
part2_start = br.hsstell();
if (header.version() == Header.MPEG1)
get_scale_factors(ch, gr);
else // MPEG-2 LSF, SZD: MPEG-2.5 LSF
get_LSF_scale_factors(ch, gr);
huffman_decode(ch, gr);
// System.out.println("CheckSum HuffMan = " + CheckSumHuff);
dequantize_sample(ro[ch], ch, gr);
}
stereo(gr);
if ((which_channels == OutputChannels.DOWNMIX_CHANNELS) && (channels > 1))
do_downmix();
for (ch=first_channel; ch<=last_channel; ch++) {
reorder(lr[ch], ch, gr);
antialias(ch, gr);
//for (int hb = 0;hb<576;hb++) CheckSumOut1d = CheckSumOut1d + out_1d[hb];
//System.out.println("CheckSumOut1d = "+CheckSumOut1d);
hybrid(ch, gr);
//for (int hb = 0;hb<576;hb++) CheckSumOut1d = CheckSumOut1d + out_1d[hb];
//System.out.println("CheckSumOut1d = "+CheckSumOut1d);
for (sb18=18;sb18<576;sb18+=36) // Frequency inversion
for (ss=1;ss<SSLIMIT;ss+=2)
out_1d[sb18 + ss] = -out_1d[sb18 + ss];
if ((ch == 0) || (which_channels == OutputChannels.RIGHT_CHANNEL)) {
for (ss=0;ss<SSLIMIT;ss++) { // Polyphase synthesis
sb = 0;
for (sb18=0; sb18<576; sb18+=18) {
samples1[sb] = out_1d[sb18+ss];
//filter1.input_sample(out_1d[sb18+ss], sb);
sb++;
}
filter1.input_samples(samples1);
filter1.calculate_pcm_samples(buffer);
}
} else {
for (ss=0;ss<SSLIMIT;ss++) { // Polyphase synthesis
sb = 0;
for (sb18=0; sb18<576; sb18+=18) {
samples2[sb] = out_1d[sb18+ss];
//filter2.input_sample(out_1d[sb18+ss], sb);
sb++;
}
filter2.input_samples(samples2);
filter2.calculate_pcm_samples(buffer);
}
}
} // channels
} // granule
// System.out.println("Counter = ................................."+counter);
//if (counter < 609)
//{
counter++;
buffer.write_buffer(1);
//}
//else if (counter == 609)
//{
// buffer.close();
// counter++;
//}
//else
//{
//}
}
/**
* Reads the side info from the stream, assuming the entire.
* frame has been read already.
* Mono : 136 bits (= 17 bytes)
* Stereo : 256 bits (= 32 bytes)
*/
private boolean get_side_info()
{
int ch, gr;
if (header.version() == Header.MPEG1)
{
si.main_data_begin = stream.get_bits(9);
if (channels == 1)
si.private_bits = stream.get_bits(5);
else si.private_bits = stream.get_bits(3);
for (ch=0; ch<channels; ch++) {
si.ch[ch].scfsi[0] = stream.get_bits(1);
si.ch[ch].scfsi[1] = stream.get_bits(1);
si.ch[ch].scfsi[2] = stream.get_bits(1);
si.ch[ch].scfsi[3] = stream.get_bits(1);
}
for (gr=0; gr<2; gr++) {
for (ch=0; ch<channels; ch++) {
si.ch[ch].gr[gr].part2_3_length = stream.get_bits(12);
si.ch[ch].gr[gr].big_values = stream.get_bits(9);
si.ch[ch].gr[gr].global_gain = stream.get_bits(8);
si.ch[ch].gr[gr].scalefac_compress = stream.get_bits(4);
si.ch[ch].gr[gr].window_switching_flag = stream.get_bits(1);
if ((si.ch[ch].gr[gr].window_switching_flag) != 0) {
si.ch[ch].gr[gr].block_type = stream.get_bits(2);
si.ch[ch].gr[gr].mixed_block_flag = stream.get_bits(1);
si.ch[ch].gr[gr].table_select[0] = stream.get_bits(5);
si.ch[ch].gr[gr].table_select[1] = stream.get_bits(5);
si.ch[ch].gr[gr].subblock_gain[0] = stream.get_bits(3);
si.ch[ch].gr[gr].subblock_gain[1] = stream.get_bits(3);
si.ch[ch].gr[gr].subblock_gain[2] = stream.get_bits(3);
// Set region_count parameters since they are implicit in this case.
if (si.ch[ch].gr[gr].block_type == 0) {
// Side info bad: block_type == 0 in split block
return false;
} else if (si.ch[ch].gr[gr].block_type == 2
&& si.ch[ch].gr[gr].mixed_block_flag == 0) {
si.ch[ch].gr[gr].region0_count = 8;
} else {
si.ch[ch].gr[gr].region0_count = 7;
}
si.ch[ch].gr[gr].region1_count = 20 -
si.ch[ch].gr[gr].region0_count;
} else {
si.ch[ch].gr[gr].table_select[0] = stream.get_bits(5);
si.ch[ch].gr[gr].table_select[1] = stream.get_bits(5);
si.ch[ch].gr[gr].table_select[2] = stream.get_bits(5);
si.ch[ch].gr[gr].region0_count = stream.get_bits(4);
si.ch[ch].gr[gr].region1_count = stream.get_bits(3);
si.ch[ch].gr[gr].block_type = 0;
}
si.ch[ch].gr[gr].preflag = stream.get_bits(1);
si.ch[ch].gr[gr].scalefac_scale = stream.get_bits(1);
si.ch[ch].gr[gr].count1table_select = stream.get_bits(1);
}
}
} else { // MPEG-2 LSF, SZD: MPEG-2.5 LSF
si.main_data_begin = stream.get_bits(8);
if (channels == 1)
si.private_bits = stream.get_bits(1);
else si.private_bits = stream.get_bits(2);
for (ch=0; ch<channels; ch++) {
si.ch[ch].gr[0].part2_3_length = stream.get_bits(12);
si.ch[ch].gr[0].big_values = stream.get_bits(9);
si.ch[ch].gr[0].global_gain = stream.get_bits(8);
si.ch[ch].gr[0].scalefac_compress = stream.get_bits(9);
si.ch[ch].gr[0].window_switching_flag = stream.get_bits(1);
if ((si.ch[ch].gr[0].window_switching_flag) != 0) {
si.ch[ch].gr[0].block_type = stream.get_bits(2);
si.ch[ch].gr[0].mixed_block_flag = stream.get_bits(1);
si.ch[ch].gr[0].table_select[0] = stream.get_bits(5);
si.ch[ch].gr[0].table_select[1] = stream.get_bits(5);
si.ch[ch].gr[0].subblock_gain[0] = stream.get_bits(3);
si.ch[ch].gr[0].subblock_gain[1] = stream.get_bits(3);
si.ch[ch].gr[0].subblock_gain[2] = stream.get_bits(3);
// Set region_count parameters since they are implicit in this case.
if (si.ch[ch].gr[0].block_type == 0) {
// Side info bad: block_type == 0 in split block
return false;
} else if (si.ch[ch].gr[0].block_type == 2
&& si.ch[ch].gr[0].mixed_block_flag == 0) {
si.ch[ch].gr[0].region0_count = 8;
} else {
si.ch[ch].gr[0].region0_count = 7;
si.ch[ch].gr[0].region1_count = 20 -
si.ch[ch].gr[0].region0_count;
}
} else {
si.ch[ch].gr[0].table_select[0] = stream.get_bits(5);
si.ch[ch].gr[0].table_select[1] = stream.get_bits(5);
si.ch[ch].gr[0].table_select[2] = stream.get_bits(5);
si.ch[ch].gr[0].region0_count = stream.get_bits(4);
si.ch[ch].gr[0].region1_count = stream.get_bits(3);
si.ch[ch].gr[0].block_type = 0;
}
si.ch[ch].gr[0].scalefac_scale = stream.get_bits(1);
si.ch[ch].gr[0].count1table_select = stream.get_bits(1);
} // for(ch=0; ch<channels; ch++)
} // if (header.version() == MPEG1)
return true;
}
/**
*
*/
private void get_scale_factors(int ch, int gr)
{
int sfb, window;
gr_info_s gr_info = (si.ch[ch].gr[gr]);
int scale_comp = gr_info.scalefac_compress;
int length0 = slen[0][scale_comp];
int length1 = slen[1][scale_comp];
if ((gr_info.window_switching_flag != 0) && (gr_info.block_type == 2)) {
if ((gr_info.mixed_block_flag) != 0) { // MIXED
for (sfb = 0; sfb < 8; sfb++)
scalefac[ch].l[sfb] = br.hgetbits(
slen[0][gr_info.scalefac_compress]);
for (sfb = 3; sfb < 6; sfb++)
for (window=0; window<3; window++)
scalefac[ch].s[window][sfb] = br.hgetbits(
slen[0][gr_info.scalefac_compress]);
for (sfb = 6; sfb < 12; sfb++)
for (window=0; window<3; window++)
scalefac[ch].s[window][sfb] = br.hgetbits(
slen[1][gr_info.scalefac_compress]);
for (sfb=12,window=0; window<3; window++)
scalefac[ch].s[window][sfb] = 0;
} else { // SHORT
scalefac[ch].s[0][0] = br.hgetbits(length0);
scalefac[ch].s[1][0] = br.hgetbits(length0);
scalefac[ch].s[2][0] = br.hgetbits(length0);
scalefac[ch].s[0][1] = br.hgetbits(length0);
scalefac[ch].s[1][1] = br.hgetbits(length0);
scalefac[ch].s[2][1] = br.hgetbits(length0);
scalefac[ch].s[0][2] = br.hgetbits(length0);
scalefac[ch].s[1][2] = br.hgetbits(length0);
scalefac[ch].s[2][2] = br.hgetbits(length0);
scalefac[ch].s[0][3] = br.hgetbits(length0);
scalefac[ch].s[1][3] = br.hgetbits(length0);
scalefac[ch].s[2][3] = br.hgetbits(length0);
scalefac[ch].s[0][4] = br.hgetbits(length0);
scalefac[ch].s[1][4] = br.hgetbits(length0);
scalefac[ch].s[2][4] = br.hgetbits(length0);
scalefac[ch].s[0][5] = br.hgetbits(length0);
scalefac[ch].s[1][5] = br.hgetbits(length0);
scalefac[ch].s[2][5] = br.hgetbits(length0);
scalefac[ch].s[0][6] = br.hgetbits(length1);
scalefac[ch].s[1][6] = br.hgetbits(length1);
scalefac[ch].s[2][6] = br.hgetbits(length1);
scalefac[ch].s[0][7] = br.hgetbits(length1);
scalefac[ch].s[1][7] = br.hgetbits(length1);
scalefac[ch].s[2][7] = br.hgetbits(length1);
scalefac[ch].s[0][8] = br.hgetbits(length1);
scalefac[ch].s[1][8] = br.hgetbits(length1);
scalefac[ch].s[2][8] = br.hgetbits(length1);
scalefac[ch].s[0][9] = br.hgetbits(length1);
scalefac[ch].s[1][9] = br.hgetbits(length1);
scalefac[ch].s[2][9] = br.hgetbits(length1);
scalefac[ch].s[0][10] = br.hgetbits(length1);
scalefac[ch].s[1][10] = br.hgetbits(length1);
scalefac[ch].s[2][10] = br.hgetbits(length1);
scalefac[ch].s[0][11] = br.hgetbits(length1);
scalefac[ch].s[1][11] = br.hgetbits(length1);
scalefac[ch].s[2][11] = br.hgetbits(length1);
scalefac[ch].s[0][12] = 0;
scalefac[ch].s[1][12] = 0;
scalefac[ch].s[2][12] = 0;
} // SHORT
} else { // LONG types 0,1,3
if ((si.ch[ch].scfsi[0] == 0) || (gr == 0)) {
scalefac[ch].l[0] = br.hgetbits(length0);
scalefac[ch].l[1] = br.hgetbits(length0);
scalefac[ch].l[2] = br.hgetbits(length0);
scalefac[ch].l[3] = br.hgetbits(length0);
scalefac[ch].l[4] = br.hgetbits(length0);
scalefac[ch].l[5] = br.hgetbits(length0);
}
if ((si.ch[ch].scfsi[1] == 0) || (gr == 0)) {
scalefac[ch].l[6] = br.hgetbits(length0);
scalefac[ch].l[7] = br.hgetbits(length0);
scalefac[ch].l[8] = br.hgetbits(length0);
scalefac[ch].l[9] = br.hgetbits(length0);
scalefac[ch].l[10] = br.hgetbits(length0);
}
if ((si.ch[ch].scfsi[2] == 0) || (gr == 0)) {
scalefac[ch].l[11] = br.hgetbits(length1);
scalefac[ch].l[12] = br.hgetbits(length1);
scalefac[ch].l[13] = br.hgetbits(length1);
scalefac[ch].l[14] = br.hgetbits(length1);
scalefac[ch].l[15] = br.hgetbits(length1);
}
if ((si.ch[ch].scfsi[3] == 0) || (gr == 0)) {
scalefac[ch].l[16] = br.hgetbits(length1);
scalefac[ch].l[17] = br.hgetbits(length1);
scalefac[ch].l[18] = br.hgetbits(length1);
scalefac[ch].l[19] = br.hgetbits(length1);
scalefac[ch].l[20] = br.hgetbits(length1);
}
scalefac[ch].l[21] = 0;
scalefac[ch].l[22] = 0;
}
}
/**
*
*/
// MDM: new_slen is fully initialized before use, no need
// to reallocate array.
private final int[] new_slen = new int[4];
private void get_LSF_scale_data(int ch, int gr)
{
int scalefac_comp, int_scalefac_comp;
int mode_ext = header.mode_extension();
int m;
int blocktypenumber;
int blocknumber = 0;
gr_info_s gr_info = (si.ch[ch].gr[gr]);
scalefac_comp = gr_info.scalefac_compress;
if (gr_info.block_type == 2) {
if (gr_info.mixed_block_flag == 0)
blocktypenumber = 1;
else if (gr_info.mixed_block_flag == 1)
blocktypenumber = 2;
else
blocktypenumber = 0;
} else {
blocktypenumber = 0;
}
if(!(((mode_ext == 1) || (mode_ext == 3)) && (ch == 1))) {
if(scalefac_comp < 400) {
new_slen[0] = (scalefac_comp >>> 4) / 5 ;
new_slen[1] = (scalefac_comp >>> 4) % 5 ;
new_slen[2] = (scalefac_comp & 0xF) >>> 2 ;
new_slen[3] = (scalefac_comp & 3);
si.ch[ch].gr[gr].preflag = 0;
blocknumber = 0;
} else if (scalefac_comp < 500) {
new_slen[0] = ((scalefac_comp - 400) >>> 2) / 5 ;
new_slen[1] = ((scalefac_comp - 400) >>> 2) % 5 ;
new_slen[2] = (scalefac_comp - 400 ) & 3 ;
new_slen[3] = 0;
si.ch[ch].gr[gr].preflag = 0;
blocknumber = 1;
} else if (scalefac_comp < 512) {
new_slen[0] = (scalefac_comp - 500 ) / 3 ;
new_slen[1] = (scalefac_comp - 500) % 3 ;
new_slen[2] = 0;
new_slen[3] = 0;
si.ch[ch].gr[gr].preflag = 1;
blocknumber = 2;
}
}
if((((mode_ext == 1) || (mode_ext == 3)) && (ch == 1)))
{
int_scalefac_comp = scalefac_comp >>> 1;
if (int_scalefac_comp < 180)
{
new_slen[0] = int_scalefac_comp / 36 ;
new_slen[1] = (int_scalefac_comp % 36 ) / 6 ;
new_slen[2] = (int_scalefac_comp % 36) % 6;
new_slen[3] = 0;
si.ch[ch].gr[gr].preflag = 0;
blocknumber = 3;
} else if (int_scalefac_comp < 244) {
new_slen[0] = ((int_scalefac_comp - 180 ) & 0x3F) >>> 4 ;
new_slen[1] = ((int_scalefac_comp - 180) & 0xF) >>> 2 ;
new_slen[2] = (int_scalefac_comp - 180 ) & 3 ;
new_slen[3] = 0;
si.ch[ch].gr[gr].preflag = 0;
blocknumber = 4;
} else if (int_scalefac_comp < 255) {
new_slen[0] = (int_scalefac_comp - 244 ) / 3 ;
new_slen[1] = (int_scalefac_comp - 244 ) % 3 ;
new_slen[2] = 0 ;
new_slen[3] = 0;
si.ch[ch].gr[gr].preflag = 0;
blocknumber = 5;
}
}
for (int x=0; x<45; x++) // why 45, not 54?
scalefac_buffer[x] = 0;
m = 0;
for (int i=0; i<4;i++) {
for (int j = 0; j < nr_of_sfb_block[blocknumber][blocktypenumber][i];
j++)
{
scalefac_buffer[m] = (new_slen[i] == 0) ? 0 :
br.hgetbits(new_slen[i]);
m++;
} // for (unint32 j ...
} // for (uint32 i ...
}
/**
*
*/
private void get_LSF_scale_factors(int ch, int gr)
{
int m = 0;
int sfb, window;
gr_info_s gr_info = (si.ch[ch].gr[gr]);
get_LSF_scale_data(ch, gr);
if ((gr_info.window_switching_flag != 0) && (gr_info.block_type == 2)) {
if (gr_info.mixed_block_flag != 0) { // MIXED
for (sfb = 0; sfb < 8; sfb++)
{
scalefac[ch].l[sfb] = scalefac_buffer[m];
m++;
}
for (sfb = 3; sfb < 12; sfb++) {
for (window=0; window<3; window++)
{
scalefac[ch].s[window][sfb] = scalefac_buffer[m];
m++;
}
}
for (window=0; window<3; window++)
scalefac[ch].s[window][12] = 0;
} else { // SHORT
for (sfb = 0; sfb < 12; sfb++) {
for (window=0; window<3; window++)
{
scalefac[ch].s[window][sfb] = scalefac_buffer[m];
m++;
}
}
for (window=0; window<3; window++)
scalefac[ch].s[window][12] = 0;
}
} else { // LONG types 0,1,3
for (sfb = 0; sfb < 21; sfb++) {
scalefac[ch].l[sfb] = scalefac_buffer[m];
m++;
}
scalefac[ch].l[21] = 0; // Jeff
scalefac[ch].l[22] = 0;
}
}
/**
*
*/
int[] x = {0};
int[] y = {0};
int[] v = {0};
int[] w = {0};
private void huffman_decode(int ch, int gr)
{
x[0] = 0;
y[0] = 0;
v[0] = 0;
w[0] = 0;
int part2_3_end = part2_start + si.ch[ch].gr[gr].part2_3_length;
int num_bits;
int region1Start;
int region2Start;
int index;
int buf, buf1;
huffcodetab h;
// Find region boundary for short block case
if ( ((si.ch[ch].gr[gr].window_switching_flag) != 0) &&
(si.ch[ch].gr[gr].block_type == 2) ) {
// Region2.
//MS: Extrahandling for 8KHZ
region1Start = (sfreq == 8) ? 72 : 36; // sfb[9/3]*3=36 or in case 8KHZ = 72
region2Start = 576; // No Region2 for short block case
} else { // Find region boundary for long block case
buf = si.ch[ch].gr[gr].region0_count + 1;
buf1 = buf + si.ch[ch].gr[gr].region1_count + 1;
if(buf1 > sfBandIndex[sfreq].l.length - 1) buf1 = sfBandIndex[sfreq].l.length - 1;
region1Start = sfBandIndex[sfreq].l[buf];
region2Start = sfBandIndex[sfreq].l[buf1]; /* MI */
}
index = 0;
// Read bigvalues area
for (int i=0; i<(si.ch[ch].gr[gr].big_values<<1); i+=2) {
if (i<region1Start) h = huffcodetab.ht[si.ch[ch].gr[gr].table_select[0]];
else if (i<region2Start) h = huffcodetab.ht[si.ch[ch].gr[gr].table_select[1]];
else h = huffcodetab.ht[si.ch[ch].gr[gr].table_select[2]];
huffcodetab.huffman_decoder(h, x, y, v, w, br);
//if (index >= is_1d.length) System.out.println("i0="+i+"/"+(si.ch[ch].gr[gr].big_values<<1)+" Index="+index+" is_1d="+is_1d.length);
is_1d[index++] = x[0];
is_1d[index++] = y[0];
CheckSumHuff = CheckSumHuff + x[0] + y[0];
// System.out.println("x = "+x[0]+" y = "+y[0]);
}
// Read count1 area
h = huffcodetab.ht[si.ch[ch].gr[gr].count1table_select+32];
num_bits = br.hsstell();
while ((num_bits < part2_3_end) && (index < 576)) {
huffcodetab.huffman_decoder(h, x, y, v, w, br);
is_1d[index++] = v[0];
is_1d[index++] = w[0];
is_1d[index++] = x[0];
is_1d[index++] = y[0];
CheckSumHuff = CheckSumHuff + v[0] + w[0] + x[0] + y[0];
// System.out.println("v = "+v[0]+" w = "+w[0]);
// System.out.println("x = "+x[0]+" y = "+y[0]);
num_bits = br.hsstell();
}
if (num_bits > part2_3_end) {
br.rewindNbits(num_bits - part2_3_end);
index-=4;
}
num_bits = br.hsstell();
// Dismiss stuffing bits
if (num_bits < part2_3_end)
br.hgetbits(part2_3_end - num_bits);
// Zero out rest
if (index < 576)
nonzero[ch] = index;
else
nonzero[ch] = 576;
if (index < 0) index = 0;
// may not be necessary
for (; index<576; index++)
is_1d[index] = 0;
}
/**
*
*/
private void i_stereo_k_values(int is_pos, int io_type, int i)
{
if (is_pos == 0) {
k[0][i] = 1.0f;
k[1][i] = 1.0f;
} else if ((is_pos & 1) != 0) {
k[0][i] = io[io_type][(is_pos + 1) >>> 1];
k[1][i] = 1.0f;
} else {
k[0][i] = 1.0f;
k[1][i] = io[io_type][is_pos >>> 1];
}
}
/**
*
*/
private void dequantize_sample(float xr[][], int ch, int gr)
{
gr_info_s gr_info = (si.ch[ch].gr[gr]);
int cb=0;
int next_cb_boundary;
int cb_begin = 0;
int cb_width = 0;
int index=0, t_index, j;
float g_gain;
float[][] xr_1d = xr;
// choose correct scalefactor band per block type, initalize boundary
if ((gr_info.window_switching_flag !=0 ) && (gr_info.block_type == 2) ) {
if (gr_info.mixed_block_flag != 0)
next_cb_boundary=sfBandIndex[sfreq].l[1]; // LONG blocks: 0,1,3
else {
cb_width = sfBandIndex[sfreq].s[1];
next_cb_boundary = (cb_width << 2) - cb_width;
cb_begin = 0;
}
} else {
next_cb_boundary=sfBandIndex[sfreq].l[1]; // LONG blocks: 0,1,3
}
// Compute overall (global) scaling.
g_gain = (float) Math.pow(2.0 , (0.25 * (gr_info.global_gain - 210.0)));
for (j=0; j<nonzero[ch]; j++)
{
// Modif E.B 02/22/99
int reste = j % SSLIMIT;
int quotien = (int) ((j-reste)/SSLIMIT);
if (is_1d[j] == 0) xr_1d[quotien][reste] = 0.0f;
else
{
int abv = is_1d[j];
// Pow Array fix (11/17/04)
if (abv < t_43.length)
{
if (is_1d[j] > 0) xr_1d[quotien][reste] = g_gain * t_43[abv];
else
{
if (-abv < t_43.length) xr_1d[quotien][reste] = -g_gain * t_43[-abv];
else xr_1d[quotien][reste] = -g_gain * (float)Math.pow(-abv, d43);
}
}
else
{
if (is_1d[j] > 0) xr_1d[quotien][reste] = g_gain * (float)Math.pow(abv, d43);
else xr_1d[quotien][reste] = -g_gain * (float)Math.pow(-abv, d43);
}
}
}
// apply formula per block type
for (j=0; j<nonzero[ch]; j++)
{
// Modif E.B 02/22/99
int reste = j % SSLIMIT;
int quotien = (int) ((j-reste)/SSLIMIT);
if (index == next_cb_boundary) { /* Adjust critical band boundary */
if ((gr_info.window_switching_flag != 0) && (gr_info.block_type == 2)) {
if (gr_info.mixed_block_flag != 0) {
if (index == sfBandIndex[sfreq].l[8]) {
next_cb_boundary = sfBandIndex[sfreq].s[4];
next_cb_boundary = (next_cb_boundary << 2) -
next_cb_boundary;
cb = 3;
cb_width = sfBandIndex[sfreq].s[4] -
sfBandIndex[sfreq].s[3];
cb_begin = sfBandIndex[sfreq].s[3];
cb_begin = (cb_begin << 2) - cb_begin;
} else if (index < sfBandIndex[sfreq].l[8]) {
next_cb_boundary = sfBandIndex[sfreq].l[(++cb)+1];
} else {
next_cb_boundary = sfBandIndex[sfreq].s[(++cb)+1];
next_cb_boundary = (next_cb_boundary << 2) -
next_cb_boundary;
cb_begin = sfBandIndex[sfreq].s[cb];
cb_width = sfBandIndex[sfreq].s[cb+1] -
cb_begin;
cb_begin = (cb_begin << 2) - cb_begin;
}
} else {
next_cb_boundary = sfBandIndex[sfreq].s[(++cb)+1];
next_cb_boundary = (next_cb_boundary << 2) -
next_cb_boundary;
cb_begin = sfBandIndex[sfreq].s[cb];
cb_width = sfBandIndex[sfreq].s[cb+1] -
cb_begin;
cb_begin = (cb_begin << 2) - cb_begin;
}
} else { // long blocks
next_cb_boundary = sfBandIndex[sfreq].l[(++cb)+1];
}
}
// Do long/short dependent scaling operations
if ((gr_info.window_switching_flag !=0)&&
(((gr_info.block_type == 2) && (gr_info.mixed_block_flag == 0)) ||
((gr_info.block_type == 2) && (gr_info.mixed_block_flag!=0) && (j >= 36)) ))
{
t_index = (index - cb_begin) / cb_width;
/* xr[sb][ss] *= pow(2.0, ((-2.0 * gr_info.subblock_gain[t_index])
-(0.5 * (1.0 + gr_info.scalefac_scale)
* scalefac[ch].s[t_index][cb]))); */
int idx = scalefac[ch].s[t_index][cb]
<< gr_info.scalefac_scale;
idx += (gr_info.subblock_gain[t_index] << 2);
xr_1d[quotien][reste] *= two_to_negative_half_pow[idx];
} else { // LONG block types 0,1,3 & 1st 2 subbands of switched blocks
/* xr[sb][ss] *= pow(2.0, -0.5 * (1.0+gr_info.scalefac_scale)
* (scalefac[ch].l[cb]
+ gr_info.preflag * pretab[cb])); */
int idx = scalefac[ch].l[cb];
if (gr_info.preflag != 0)
idx += pretab[cb];
idx = idx << gr_info.scalefac_scale;
xr_1d[quotien][reste] *= two_to_negative_half_pow[idx];
}
index++;
}
for (j=nonzero[ch]; j<576; j++)
{
// Modif E.B 02/22/99
int reste = j % SSLIMIT;
int quotien = (int) ((j-reste)/SSLIMIT);
if(reste < 0) reste = 0;
if(quotien < 0) quotien = 0;
xr_1d[quotien][reste] = 0.0f;
}
return;
}
/**
*
*/
private void reorder(float xr[][], int ch, int gr)
{
gr_info_s gr_info = (si.ch[ch].gr[gr]);
int freq, freq3;
int index;
int sfb, sfb_start, sfb_lines;
int src_line, des_line;
float[][] xr_1d = xr;
if ((gr_info.window_switching_flag !=0) && (gr_info.block_type == 2)) {
for(index=0; index<576; index++)
out_1d[index] = 0.0f;
if (gr_info.mixed_block_flag !=0 ) {
// NO REORDER FOR LOW 2 SUBBANDS
for (index = 0; index < 36; index++)
{
// Modif E.B 02/22/99
int reste = index % SSLIMIT;
int quotien = (int) ((index-reste)/SSLIMIT);
out_1d[index] = xr_1d[quotien][reste];
}
// REORDERING FOR REST SWITCHED SHORT
/*for( sfb=3,sfb_start=sfBandIndex[sfreq].s[3],
sfb_lines=sfBandIndex[sfreq].s[4] - sfb_start;
sfb < 13; sfb++,sfb_start = sfBandIndex[sfreq].s[sfb],
sfb_lines = sfBandIndex[sfreq].s[sfb+1] - sfb_start )
{*/
for( sfb=3; sfb < 13; sfb++)
{
//System.out.println("sfreq="+sfreq+" sfb="+sfb+" sfBandIndex="+sfBandIndex.length+" sfBandIndex[sfreq].s="+sfBandIndex[sfreq].s.length);
sfb_start = sfBandIndex[sfreq].s[sfb];
sfb_lines = sfBandIndex[sfreq].s[sfb+1] - sfb_start;
int sfb_start3 = (sfb_start << 2) - sfb_start;
for(freq=0, freq3=0; freq<sfb_lines;
freq++, freq3+=3) {
src_line = sfb_start3 + freq;
des_line = sfb_start3 + freq3;
// Modif E.B 02/22/99
int reste = src_line % SSLIMIT;
int quotien = (int) ((src_line-reste)/SSLIMIT);
out_1d[des_line] = xr_1d[quotien][reste];
src_line += sfb_lines;
des_line++;
reste = src_line % SSLIMIT;
quotien = (int) ((src_line-reste)/SSLIMIT);
out_1d[des_line] = xr_1d[quotien][reste];
src_line += sfb_lines;
des_line++;
reste = src_line % SSLIMIT;
quotien = (int) ((src_line-reste)/SSLIMIT);
out_1d[des_line] = xr_1d[quotien][reste];
}
}
} else { // pure short
for(index=0;index<576;index++)
{
int j = reorder_table[sfreq][index];
int reste = j % SSLIMIT;
int quotien = (int) ((j-reste)/SSLIMIT);
out_1d[index] = xr_1d[quotien][reste];
}
}
}
else { // long blocks
for(index=0; index<576; index++)
{
// Modif E.B 02/22/99
int reste = index % SSLIMIT;
int quotien = (int) ((index-reste)/SSLIMIT);
out_1d[index] = xr_1d[quotien][reste];
}
}
}
/**
*
*/
int[] is_pos = new int[576];
float[] is_ratio = new float[576];
private void stereo(int gr)
{
int sb, ss;
if (channels == 1) { // mono , bypass xr[0][][] to lr[0][][]
for(sb=0;sb<SBLIMIT;sb++)
for(ss=0;ss<SSLIMIT;ss+=3) {
lr[0][sb][ss] = ro[0][sb][ss];
lr[0][sb][ss+1] = ro[0][sb][ss+1];
lr[0][sb][ss+2] = ro[0][sb][ss+2];
}
} else {
gr_info_s gr_info = (si.ch[0].gr[gr]);
int mode_ext = header.mode_extension();
int sfb;
int i;
int lines, temp, temp2;
boolean ms_stereo = ((header.mode() == Header.JOINT_STEREO) && ((mode_ext & 0x2)!=0));
boolean i_stereo = ((header.mode() == Header.JOINT_STEREO) && ((mode_ext & 0x1)!=0));
boolean lsf = ((header.version() == Header.MPEG2_LSF || header.version() == Header.MPEG25_LSF )); // SZD
int io_type = (gr_info.scalefac_compress & 1);
// initialization
for (i=0; i<576; i++)
{
is_pos[i] = 7;
is_ratio[i] = 0.0f;
}
if (i_stereo) {
if ((gr_info.window_switching_flag !=0 )&& (gr_info.block_type == 2)) {
if (gr_info.mixed_block_flag != 0) {
int max_sfb = 0;
for (int j=0; j<3; j++) {
int sfbcnt;
sfbcnt = 2;
for( sfb=12; sfb >=3; sfb-- ) {
i = sfBandIndex[sfreq].s[sfb];
lines = sfBandIndex[sfreq].s[sfb+1] - i;
i = (i << 2) - i + (j+1) * lines - 1;
while (lines > 0) {
if (ro[1][i/18][i%18] != 0.0f) {
// MDM: in java, array access is very slow.
// Is quicker to compute div and mod values.
//if (ro[1][ss_div[i]][ss_mod[i]] != 0.0f) {
sfbcnt = sfb;
sfb = -10;
lines = -10;
}
lines--;
i--;
} // while (lines > 0)
} // for (sfb=12 ...
sfb = sfbcnt + 1;
if (sfb > max_sfb)
max_sfb = sfb;
while(sfb < 12) {
temp = sfBandIndex[sfreq].s[sfb];
sb = sfBandIndex[sfreq].s[sfb+1] - temp;
i = (temp << 2) - temp + j * sb;
for ( ; sb > 0; sb--) {
is_pos[i] = scalefac[1].s[j][sfb];
if (is_pos[i] != 7)
if (lsf)
i_stereo_k_values(is_pos[i], io_type, i);
else
is_ratio[i] = TAN12[is_pos[i]];
i++;
} // for (; sb>0...
sfb++;
} // while (sfb < 12)
sfb = sfBandIndex[sfreq].s[10];
sb = sfBandIndex[sfreq].s[11] - sfb;
sfb = (sfb << 2) - sfb + j * sb;
temp = sfBandIndex[sfreq].s[11];
sb = sfBandIndex[sfreq].s[12] - temp;
i = (temp << 2) - temp + j * sb;
for (; sb > 0; sb--) {
is_pos[i] = is_pos[sfb];
if (lsf) {
k[0][i] = k[0][sfb];
k[1][i] = k[1][sfb];
} else {
is_ratio[i] = is_ratio[sfb];
}
i++;
} // for (; sb > 0 ...
}
if (max_sfb <= 3) {
i = 2;
ss = 17;
sb = -1;
while (i >= 0) {
if (ro[1][i][ss] != 0.0f) {
sb = (i<<4) + (i<<1) + ss;
i = -1;
} else {
ss--;
if (ss < 0) {
i--;
ss = 17;
}
} // if (ro ...
} // while (i>=0)
i = 0;
while (sfBandIndex[sfreq].l[i] <= sb)
i++;
sfb = i;
i = sfBandIndex[sfreq].l[i];
for (; sfb<8; sfb++) {
sb = sfBandIndex[sfreq].l[sfb+1]-sfBandIndex[sfreq].l[sfb];
for (; sb>0; sb--) {
is_pos[i] = scalefac[1].l[sfb];
if (is_pos[i] != 7)
if (lsf)
i_stereo_k_values(is_pos[i], io_type, i);
else
is_ratio[i] = TAN12[is_pos[i]];
i++;
} // for (; sb>0 ...
} // for (; sfb<8 ...
} // for (j=0 ...
} else { // if (gr_info.mixed_block_flag)
for (int j=0; j<3; j++) {
int sfbcnt;
sfbcnt = -1;
for( sfb=12; sfb >=0; sfb-- )
{
temp = sfBandIndex[sfreq].s[sfb];
lines = sfBandIndex[sfreq].s[sfb+1] - temp;
i = (temp << 2) - temp + (j+1) * lines - 1;
while (lines > 0) {
if (ro[1][i/18][i%18] != 0.0f) {
// MDM: in java, array access is very slow.
// Is quicker to compute div and mod values.
//if (ro[1][ss_div[i]][ss_mod[i]] != 0.0f) {
sfbcnt = sfb;
sfb = -10;
lines = -10;
}
lines--;
i--;
} // while (lines > 0) */
} // for (sfb=12 ...
sfb = sfbcnt + 1;
while(sfb<12) {
temp = sfBandIndex[sfreq].s[sfb];
sb = sfBandIndex[sfreq].s[sfb+1] - temp;
i = (temp << 2) - temp + j * sb;
for ( ; sb > 0; sb--) {
is_pos[i] = scalefac[1].s[j][sfb];
if (is_pos[i] != 7)
if (lsf)
i_stereo_k_values(is_pos[i], io_type, i);
else
is_ratio[i] = TAN12[is_pos[i]];
i++;
} // for (; sb>0 ...
sfb++;
} // while (sfb<12)
temp = sfBandIndex[sfreq].s[10];
temp2= sfBandIndex[sfreq].s[11];
sb = temp2 - temp;
sfb = (temp << 2) - temp + j * sb;
sb = sfBandIndex[sfreq].s[12] - temp2;
i = (temp2 << 2) - temp2 + j * sb;
for (; sb>0; sb--) {
is_pos[i] = is_pos[sfb];
if (lsf) {
k[0][i] = k[0][sfb];
k[1][i] = k[1][sfb];
} else {
is_ratio[i] = is_ratio[sfb];
}
i++;
} // for (; sb>0 ...
} // for (sfb=12
} // for (j=0 ...
} else { // if (gr_info.window_switching_flag ...
i = 31;
ss = 17;
sb = 0;
while (i >= 0) {
if (ro[1][i][ss] != 0.0f) {
sb = (i<<4) + (i<<1) + ss;
i = -1;
} else {
ss--;
if (ss < 0) {
i--;
ss = 17;
}
}
}
i = 0;
while (sfBandIndex[sfreq].l[i] <= sb)
i++;
sfb = i;
i = sfBandIndex[sfreq].l[i];
for (; sfb<21; sfb++) {
sb = sfBandIndex[sfreq].l[sfb+1] - sfBandIndex[sfreq].l[sfb];
for (; sb > 0; sb--) {
is_pos[i] = scalefac[1].l[sfb];
if (is_pos[i] != 7)
if (lsf)
i_stereo_k_values(is_pos[i], io_type, i);
else
is_ratio[i] = TAN12[is_pos[i]];
i++;
}
}
sfb = sfBandIndex[sfreq].l[20];
for (sb = 576 - sfBandIndex[sfreq].l[21]; (sb > 0) && (i<576); sb--)
{
is_pos[i] = is_pos[sfb]; // error here : i >=576
if (lsf) {
k[0][i] = k[0][sfb];
k[1][i] = k[1][sfb];
} else {
is_ratio[i] = is_ratio[sfb];
}
i++;
} // if (gr_info.mixed_block_flag)
} // if (gr_info.window_switching_flag ...
} // if (i_stereo)
i = 0;
for(sb=0;sb<SBLIMIT;sb++)
for(ss=0;ss<SSLIMIT;ss++) {
if (is_pos[i] == 7) {
if (ms_stereo) {
lr[0][sb][ss] = (ro[0][sb][ss]+ro[1][sb][ss]) * 0.707106781f;
lr[1][sb][ss] = (ro[0][sb][ss]-ro[1][sb][ss]) * 0.707106781f;
} else {
lr[0][sb][ss] = ro[0][sb][ss];
lr[1][sb][ss] = ro[1][sb][ss];
}
}
else if (i_stereo) {
if (lsf) {
lr[0][sb][ss] = ro[0][sb][ss] * k[0][i];
lr[1][sb][ss] = ro[0][sb][ss] * k[1][i];
} else {
lr[1][sb][ss] = ro[0][sb][ss] / (float) (1 + is_ratio[i]);
lr[0][sb][ss] = lr[1][sb][ss] * is_ratio[i];
}
}
/* else {
System.out.println("Error in stereo processing\n");
} */
i++;
}
} // channels == 2
}
/**
*
*/
private void antialias(int ch, int gr)
{
int sb18, ss, sb18lim;
gr_info_s gr_info = (si.ch[ch].gr[gr]);
// 31 alias-reduction operations between each pair of sub-bands
// with 8 butterflies between each pair
if ((gr_info.window_switching_flag !=0) && (gr_info.block_type == 2) &&
!(gr_info.mixed_block_flag != 0) )
return;
if ((gr_info.window_switching_flag !=0) && (gr_info.mixed_block_flag != 0)&&
(gr_info.block_type == 2)) {
sb18lim = 18;
} else {
sb18lim = 558;
}
for (sb18=0; sb18 < sb18lim; sb18+=18) {
for (ss=0;ss<8;ss++) {
int src_idx1 = sb18 + 17 - ss;
int src_idx2 = sb18 + 18 + ss;
float bu = out_1d[src_idx1];
float bd = out_1d[src_idx2];
out_1d[src_idx1] = (bu * cs[ss]) - (bd * ca[ss]);
out_1d[src_idx2] = (bd * cs[ss]) + (bu * ca[ss]);
}
}
}
/**
*
*/
// MDM: tsOutCopy and rawout do not need initializing, so the arrays
// can be reused.
float[] tsOutCopy = new float[18];
float[] rawout = new float[36];
private void hybrid(int ch, int gr)
{
int bt;
int sb18;
gr_info_s gr_info = (si.ch[ch].gr[gr]);
float[] tsOut;
float[][] prvblk;
for(sb18=0;sb18<576;sb18+=18)
{
bt = ((gr_info.window_switching_flag !=0 ) && (gr_info.mixed_block_flag !=0) &&
(sb18 < 36)) ? 0 : gr_info.block_type;
tsOut = out_1d;
// Modif E.B 02/22/99
for (int cc = 0;cc<18;cc++)
tsOutCopy[cc] = tsOut[cc+sb18];
inv_mdct(tsOutCopy, rawout, bt);
for (int cc = 0;cc<18;cc++)
tsOut[cc+sb18] = tsOutCopy[cc];
// Fin Modif
// overlap addition
prvblk = prevblck;
tsOut[0 + sb18] = rawout[0] + prvblk[ch][sb18 + 0];
prvblk[ch][sb18 + 0] = rawout[18];
tsOut[1 + sb18] = rawout[1] + prvblk[ch][sb18 + 1];
prvblk[ch][sb18 + 1] = rawout[19];
tsOut[2 + sb18] = rawout[2] + prvblk[ch][sb18 + 2];
prvblk[ch][sb18 + 2] = rawout[20];
tsOut[3 + sb18] = rawout[3] + prvblk[ch][sb18 + 3];
prvblk[ch][sb18 + 3] = rawout[21];
tsOut[4 + sb18] = rawout[4] + prvblk[ch][sb18 + 4];
prvblk[ch][sb18 + 4] = rawout[22];
tsOut[5 + sb18] = rawout[5] + prvblk[ch][sb18 + 5];
prvblk[ch][sb18 + 5] = rawout[23];
tsOut[6 + sb18] = rawout[6] + prvblk[ch][sb18 + 6];
prvblk[ch][sb18 + 6] = rawout[24];
tsOut[7 + sb18] = rawout[7] + prvblk[ch][sb18 + 7];
prvblk[ch][sb18 + 7] = rawout[25];
tsOut[8 + sb18] = rawout[8] + prvblk[ch][sb18 + 8];
prvblk[ch][sb18 + 8] = rawout[26];
tsOut[9 + sb18] = rawout[9] + prvblk[ch][sb18 + 9];
prvblk[ch][sb18 + 9] = rawout[27];
tsOut[10 + sb18] = rawout[10] + prvblk[ch][sb18 + 10];
prvblk[ch][sb18 + 10] = rawout[28];
tsOut[11 + sb18] = rawout[11] + prvblk[ch][sb18 + 11];
prvblk[ch][sb18 + 11] = rawout[29];
tsOut[12 + sb18] = rawout[12] + prvblk[ch][sb18 + 12];
prvblk[ch][sb18 + 12] = rawout[30];
tsOut[13 + sb18] = rawout[13] + prvblk[ch][sb18 + 13];
prvblk[ch][sb18 + 13] = rawout[31];
tsOut[14 + sb18] = rawout[14] + prvblk[ch][sb18 + 14];
prvblk[ch][sb18 + 14] = rawout[32];
tsOut[15 + sb18] = rawout[15] + prvblk[ch][sb18 + 15];
prvblk[ch][sb18 + 15] = rawout[33];
tsOut[16 + sb18] = rawout[16] + prvblk[ch][sb18 + 16];
prvblk[ch][sb18 + 16] = rawout[34];
tsOut[17 + sb18] = rawout[17] + prvblk[ch][sb18 + 17];
prvblk[ch][sb18 + 17] = rawout[35];
}
}
/**
*
*/
private void do_downmix()
{
for (int sb=0; sb<SSLIMIT; sb++) {
for (int ss=0; ss<SSLIMIT; ss+=3) {
lr[0][sb][ss] = (lr[0][sb][ss] + lr[1][sb][ss]) * 0.5f;
lr[0][sb][ss+1] = (lr[0][sb][ss+1] + lr[1][sb][ss+1]) * 0.5f;
lr[0][sb][ss+2] = (lr[0][sb][ss+2] + lr[1][sb][ss+2]) * 0.5f;
}
}
}
/**
* Fast INV_MDCT.
*/
public void inv_mdct(float[] in, float[] out, int block_type)
{
float[] win_bt;
int i;
float tmpf_0, tmpf_1, tmpf_2, tmpf_3, tmpf_4, tmpf_5, tmpf_6, tmpf_7, tmpf_8, tmpf_9;
float tmpf_10, tmpf_11, tmpf_12, tmpf_13, tmpf_14, tmpf_15, tmpf_16, tmpf_17;
tmpf_0 = tmpf_1 = tmpf_2 = tmpf_3 = tmpf_4 = tmpf_5 = tmpf_6 = tmpf_7 = tmpf_8 = tmpf_9 =
tmpf_10 = tmpf_11 = tmpf_12 = tmpf_13 = tmpf_14 = tmpf_15 = tmpf_16 = tmpf_17 = 0.0f;
if(block_type == 2)
{
/*
*
* Under MicrosoftVM 2922, This causes a GPF, or
* At best, an ArrayIndexOutOfBoundsExceptin.
for(int p=0;p<36;p+=9)
{
out[p] = out[p+1] = out[p+2] = out[p+3] =
out[p+4] = out[p+5] = out[p+6] = out[p+7] =
out[p+8] = 0.0f;
}
*/
out[0] = 0.0f;
out[1] = 0.0f;
out[2] = 0.0f;
out[3] = 0.0f;
out[4] = 0.0f;
out[5] = 0.0f;
out[6] = 0.0f;
out[7] = 0.0f;
out[8] = 0.0f;
out[9] = 0.0f;
out[10] = 0.0f;
out[11] = 0.0f;
out[12] = 0.0f;
out[13] = 0.0f;
out[14] = 0.0f;
out[15] = 0.0f;
out[16] = 0.0f;
out[17] = 0.0f;
out[18] = 0.0f;
out[19] = 0.0f;
out[20] = 0.0f;
out[21] = 0.0f;
out[22] = 0.0f;
out[23] = 0.0f;
out[24] = 0.0f;
out[25] = 0.0f;
out[26] = 0.0f;
out[27] = 0.0f;
out[28] = 0.0f;
out[29] = 0.0f;
out[30] = 0.0f;
out[31] = 0.0f;
out[32] = 0.0f;
out[33] = 0.0f;
out[34] = 0.0f;
out[35] = 0.0f;
int six_i = 0;
for(i=0;i<3;i++)
{
// 12 point IMDCT
// Begin 12 point IDCT
// Input aliasing for 12 pt IDCT
in[15+i] += in[12+i]; in[12+i] += in[9+i]; in[9+i] += in[6+i];
in[6+i] += in[3+i]; in[3+i] += in[0+i];
// Input aliasing on odd indices (for 6 point IDCT)
in[15+i] += in[9+i]; in[9+i] += in[3+i];
// 3 point IDCT on even indices
float pp1, pp2, sum;
pp2 = in[12+i] * 0.500000000f;
pp1 = in[ 6+i] * 0.866025403f;
sum = in[0+i] + pp2;
tmpf_1 = in[0+i] - in[12+i];
tmpf_0 = sum + pp1;
tmpf_2 = sum - pp1;
// End 3 point IDCT on even indices
// 3 point IDCT on odd indices (for 6 point IDCT)
pp2 = in[15+i] * 0.500000000f;
pp1 = in[ 9+i] * 0.866025403f;
sum = in[ 3+i] + pp2;
tmpf_4 = in[3+i] - in[15+i];
tmpf_5 = sum + pp1;
tmpf_3 = sum - pp1;
// End 3 point IDCT on odd indices
// Twiddle factors on odd indices (for 6 point IDCT)
tmpf_3 *= 1.931851653f;
tmpf_4 *= 0.707106781f;
tmpf_5 *= 0.517638090f;
// Output butterflies on 2 3 point IDCT's (for 6 point IDCT)
float save = tmpf_0;
tmpf_0 += tmpf_5;
tmpf_5 = save - tmpf_5;
save = tmpf_1;
tmpf_1 += tmpf_4;
tmpf_4 = save - tmpf_4;
save = tmpf_2;
tmpf_2 += tmpf_3;
tmpf_3 = save - tmpf_3;
// End 6 point IDCT
// Twiddle factors on indices (for 12 point IDCT)
tmpf_0 *= 0.504314480f;
tmpf_1 *= 0.541196100f;
tmpf_2 *= 0.630236207f;
tmpf_3 *= 0.821339815f;
tmpf_4 *= 1.306562965f;
tmpf_5 *= 3.830648788f;
// End 12 point IDCT
// Shift to 12 point modified IDCT, multiply by window type 2
tmpf_8 = -tmpf_0 * 0.793353340f;
tmpf_9 = -tmpf_0 * 0.608761429f;
tmpf_7 = -tmpf_1 * 0.923879532f;
tmpf_10 = -tmpf_1 * 0.382683432f;
tmpf_6 = -tmpf_2 * 0.991444861f;
tmpf_11 = -tmpf_2 * 0.130526192f;
tmpf_0 = tmpf_3;
tmpf_1 = tmpf_4 * 0.382683432f;
tmpf_2 = tmpf_5 * 0.608761429f;
tmpf_3 = -tmpf_5 * 0.793353340f;
tmpf_4 = -tmpf_4 * 0.923879532f;
tmpf_5 = -tmpf_0 * 0.991444861f;
tmpf_0 *= 0.130526192f;
out[six_i + 6] += tmpf_0;
out[six_i + 7] += tmpf_1;
out[six_i + 8] += tmpf_2;
out[six_i + 9] += tmpf_3;
out[six_i + 10] += tmpf_4;
out[six_i + 11] += tmpf_5;
out[six_i + 12] += tmpf_6;
out[six_i + 13] += tmpf_7;
out[six_i + 14] += tmpf_8;
out[six_i + 15] += tmpf_9;
out[six_i + 16] += tmpf_10;
out[six_i + 17] += tmpf_11;
six_i += 6;
}
}
else
{
// 36 point IDCT
// input aliasing for 36 point IDCT
in[17]+=in[16]; in[16]+=in[15]; in[15]+=in[14]; in[14]+=in[13];
in[13]+=in[12]; in[12]+=in[11]; in[11]+=in[10]; in[10]+=in[9];
in[9] +=in[8]; in[8] +=in[7]; in[7] +=in[6]; in[6] +=in[5];
in[5] +=in[4]; in[4] +=in[3]; in[3] +=in[2]; in[2] +=in[1];
in[1] +=in[0];
// 18 point IDCT for odd indices
// input aliasing for 18 point IDCT
in[17]+=in[15]; in[15]+=in[13]; in[13]+=in[11]; in[11]+=in[9];
in[9] +=in[7]; in[7] +=in[5]; in[5] +=in[3]; in[3] +=in[1];
float tmp0,tmp1,tmp2,tmp3,tmp4,tmp0_,tmp1_,tmp2_,tmp3_;
float tmp0o,tmp1o,tmp2o,tmp3o,tmp4o,tmp0_o,tmp1_o,tmp2_o,tmp3_o;
// Fast 9 Point Inverse Discrete Cosine Transform
//
// By Francois-Raymond Boyer
// mailto:boyerf@iro.umontreal.ca
// http://www.iro.umontreal.ca/~boyerf
//
// The code has been optimized for Intel processors
// (takes a lot of time to convert float to and from iternal FPU representation)
//
// It is a simple "factorization" of the IDCT matrix.
// 9 point IDCT on even indices
// 5 points on odd indices (not realy an IDCT)
float i00 = in[0]+in[0];
float iip12 = i00 + in[12];
tmp0 = iip12 + in[4]*1.8793852415718f + in[8]*1.532088886238f + in[16]*0.34729635533386f;
tmp1 = i00 + in[4] - in[8] - in[12] - in[12] - in[16];
tmp2 = iip12 - in[4]*0.34729635533386f - in[8]*1.8793852415718f + in[16]*1.532088886238f;
tmp3 = iip12 - in[4]*1.532088886238f + in[8]*0.34729635533386f - in[16]*1.8793852415718f;
tmp4 = in[0] - in[4] + in[8] - in[12] + in[16];
// 4 points on even indices
float i66_ = in[6]*1.732050808f; // Sqrt[3]
tmp0_ = in[2]*1.9696155060244f + i66_ + in[10]*1.2855752193731f + in[14]*0.68404028665134f;
tmp1_ = (in[2] - in[10] - in[14])*1.732050808f;
tmp2_ = in[2]*1.2855752193731f - i66_ - in[10]*0.68404028665134f + in[14]*1.9696155060244f;
tmp3_ = in[2]*0.68404028665134f - i66_ + in[10]*1.9696155060244f - in[14]*1.2855752193731f;
// 9 point IDCT on odd indices
// 5 points on odd indices (not realy an IDCT)
float i0 = in[0+1]+in[0+1];
float i0p12 = i0 + in[12+1];
tmp0o = i0p12 + in[4+1]*1.8793852415718f + in[8+1]*1.532088886238f + in[16+1]*0.34729635533386f;
tmp1o = i0 + in[4+1] - in[8+1] - in[12+1] - in[12+1] - in[16+1];
tmp2o = i0p12 - in[4+1]*0.34729635533386f - in[8+1]*1.8793852415718f + in[16+1]*1.532088886238f;
tmp3o = i0p12 - in[4+1]*1.532088886238f + in[8+1]*0.34729635533386f - in[16+1]*1.8793852415718f;
tmp4o = (in[0+1] - in[4+1] + in[8+1] - in[12+1] + in[16+1])*0.707106781f; // Twiddled
// 4 points on even indices
float i6_ = in[6+1]*1.732050808f; // Sqrt[3]
tmp0_o = in[2+1]*1.9696155060244f + i6_ + in[10+1]*1.2855752193731f + in[14+1]*0.68404028665134f;
tmp1_o = (in[2+1] - in[10+1] - in[14+1])*1.732050808f;
tmp2_o = in[2+1]*1.2855752193731f - i6_ - in[10+1]*0.68404028665134f + in[14+1]*1.9696155060244f;
tmp3_o = in[2+1]*0.68404028665134f - i6_ + in[10+1]*1.9696155060244f - in[14+1]*1.2855752193731f;
// Twiddle factors on odd indices
// and
// Butterflies on 9 point IDCT's
// and
// twiddle factors for 36 point IDCT
float e, o;
e = tmp0 + tmp0_; o = (tmp0o + tmp0_o)*0.501909918f; tmpf_0 = e + o; tmpf_17 = e - o;
e = tmp1 + tmp1_; o = (tmp1o + tmp1_o)*0.517638090f; tmpf_1 = e + o; tmpf_16 = e - o;
e = tmp2 + tmp2_; o = (tmp2o + tmp2_o)*0.551688959f; tmpf_2 = e + o; tmpf_15 = e - o;
e = tmp3 + tmp3_; o = (tmp3o + tmp3_o)*0.610387294f; tmpf_3 = e + o; tmpf_14 = e - o;
tmpf_4 = tmp4 + tmp4o; tmpf_13 = tmp4 - tmp4o;
e = tmp3 - tmp3_; o = (tmp3o - tmp3_o)*0.871723397f; tmpf_5 = e + o; tmpf_12 = e - o;
e = tmp2 - tmp2_; o = (tmp2o - tmp2_o)*1.183100792f; tmpf_6 = e + o; tmpf_11 = e - o;
e = tmp1 - tmp1_; o = (tmp1o - tmp1_o)*1.931851653f; tmpf_7 = e + o; tmpf_10 = e - o;
e = tmp0 - tmp0_; o = (tmp0o - tmp0_o)*5.736856623f; tmpf_8 = e + o; tmpf_9 = e - o;
// end 36 point IDCT */
// shift to modified IDCT
win_bt = win[block_type];
out[0] =-tmpf_9 * win_bt[0];
out[1] =-tmpf_10 * win_bt[1];
out[2] =-tmpf_11 * win_bt[2];
out[3] =-tmpf_12 * win_bt[3];
out[4] =-tmpf_13 * win_bt[4];
out[5] =-tmpf_14 * win_bt[5];
out[6] =-tmpf_15 * win_bt[6];
out[7] =-tmpf_16 * win_bt[7];
out[8] =-tmpf_17 * win_bt[8];
out[9] = tmpf_17 * win_bt[9];
out[10]= tmpf_16 * win_bt[10];
out[11]= tmpf_15 * win_bt[11];
out[12]= tmpf_14 * win_bt[12];
out[13]= tmpf_13 * win_bt[13];
out[14]= tmpf_12 * win_bt[14];
out[15]= tmpf_11 * win_bt[15];
out[16]= tmpf_10 * win_bt[16];
out[17]= tmpf_9 * win_bt[17];
out[18]= tmpf_8 * win_bt[18];
out[19]= tmpf_7 * win_bt[19];
out[20]= tmpf_6 * win_bt[20];
out[21]= tmpf_5 * win_bt[21];
out[22]= tmpf_4 * win_bt[22];
out[23]= tmpf_3 * win_bt[23];
out[24]= tmpf_2 * win_bt[24];
out[25]= tmpf_1 * win_bt[25];
out[26]= tmpf_0 * win_bt[26];
out[27]= tmpf_0 * win_bt[27];
out[28]= tmpf_1 * win_bt[28];
out[29]= tmpf_2 * win_bt[29];
out[30]= tmpf_3 * win_bt[30];
out[31]= tmpf_4 * win_bt[31];
out[32]= tmpf_5 * win_bt[32];
out[33]= tmpf_6 * win_bt[33];
out[34]= tmpf_7 * win_bt[34];
out[35]= tmpf_8 * win_bt[35];
}
}
private int counter = 0;
private static final int SSLIMIT=18;
private static final int SBLIMIT=32;
// Size of the table of whole numbers raised to 4/3 power.
// This may be adjusted for performance without any problems.
//public static final int POW_TABLE_LIMIT=512;
/************************************************************/
/* L3TABLE */
/************************************************************/
static class SBI
{
public int[] l;
public int[] s;
public SBI()
{
l = new int[23];
s = new int[14];
}
public SBI(int[] thel, int[] thes)
{
l = thel;
s = thes;
}
}
static class gr_info_s
{
public int part2_3_length = 0;
public int big_values = 0;
public int global_gain = 0;
public int scalefac_compress = 0;
public int window_switching_flag = 0;
public int block_type = 0;
public int mixed_block_flag = 0;
public int[] table_select;
public int[] subblock_gain;
public int region0_count = 0;
public int region1_count = 0;
public int preflag = 0;
public int scalefac_scale = 0;
public int count1table_select = 0;
/**
* Dummy Constructor
*/
public gr_info_s()
{
table_select = new int[3];
subblock_gain = new int[3];
}
}
static class temporaire
{
public int[] scfsi;
public gr_info_s[] gr;
/**
* Dummy Constructor
*/
public temporaire()
{
scfsi = new int[4];
gr = new gr_info_s[2];
gr[0] = new gr_info_s();
gr[1] = new gr_info_s();
}
}
static class III_side_info_t
{
public int main_data_begin = 0;
public int private_bits = 0;
public temporaire[] ch;
/**
* Dummy Constructor
*/
public III_side_info_t()
{
ch = new temporaire[2];
ch[0] = new temporaire();
ch[1] = new temporaire();
}
}
static class temporaire2
{
public int[] l; /* [cb] */
public int[][] s; /* [window][cb] */
/**
* Dummy Constructor
*/
public temporaire2()
{
l = new int[23];
s = new int[3][13];
}
}
//class III_scalefac_t
//{
// public temporaire2[] tab;
// /**
// * Dummy Constructor
// */
// public III_scalefac_t()
// {
// tab = new temporaire2[2];
// }
//}
private static final int slen[][] =
{
{0, 0, 0, 0, 3, 1, 1, 1, 2, 2, 2, 3, 3, 3, 4, 4},
{0, 1, 2, 3, 0, 1, 2, 3, 1, 2, 3, 1, 2, 3, 2, 3}
};
public static final int pretab[] =
{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 2, 2, 3, 3, 3, 2, 0};
private SBI[] sfBandIndex; // Init in the constructor.
public static final float two_to_negative_half_pow[] =
{ 1.0000000000E+00f, 7.0710678119E-01f, 5.0000000000E-01f, 3.5355339059E-01f,
2.5000000000E-01f, 1.7677669530E-01f, 1.2500000000E-01f, 8.8388347648E-02f,
6.2500000000E-02f, 4.4194173824E-02f, 3.1250000000E-02f, 2.2097086912E-02f,
1.5625000000E-02f, 1.1048543456E-02f, 7.8125000000E-03f, 5.5242717280E-03f,
3.9062500000E-03f, 2.7621358640E-03f, 1.9531250000E-03f, 1.3810679320E-03f,
9.7656250000E-04f, 6.9053396600E-04f, 4.8828125000E-04f, 3.4526698300E-04f,
2.4414062500E-04f, 1.7263349150E-04f, 1.2207031250E-04f, 8.6316745750E-05f,
6.1035156250E-05f, 4.3158372875E-05f, 3.0517578125E-05f, 2.1579186438E-05f,
1.5258789062E-05f, 1.0789593219E-05f, 7.6293945312E-06f, 5.3947966094E-06f,
3.8146972656E-06f, 2.6973983047E-06f, 1.9073486328E-06f, 1.3486991523E-06f,
9.5367431641E-07f, 6.7434957617E-07f, 4.7683715820E-07f, 3.3717478809E-07f,
2.3841857910E-07f, 1.6858739404E-07f, 1.1920928955E-07f, 8.4293697022E-08f,
5.9604644775E-08f, 4.2146848511E-08f, 2.9802322388E-08f, 2.1073424255E-08f,
1.4901161194E-08f, 1.0536712128E-08f, 7.4505805969E-09f, 5.2683560639E-09f,
3.7252902985E-09f, 2.6341780319E-09f, 1.8626451492E-09f, 1.3170890160E-09f,
9.3132257462E-10f, 6.5854450798E-10f, 4.6566128731E-10f, 3.2927225399E-10f
};
public static final float t_43[] = create_t_43();
static private float[] create_t_43()
{
float[] t43 = new float[8192];
final double d43 = (4.0/3.0);
for (int i=0; i<8192; i++)
{
t43[i] = (float)Math.pow(i, d43);
}
return t43;
}
public static final float io[][] =
{
{ 1.0000000000E+00f, 8.4089641526E-01f, 7.0710678119E-01f, 5.9460355751E-01f,
5.0000000001E-01f, 4.2044820763E-01f, 3.5355339060E-01f, 2.9730177876E-01f,
2.5000000001E-01f, 2.1022410382E-01f, 1.7677669530E-01f, 1.4865088938E-01f,
1.2500000000E-01f, 1.0511205191E-01f, 8.8388347652E-02f, 7.4325444691E-02f,
6.2500000003E-02f, 5.2556025956E-02f, 4.4194173826E-02f, 3.7162722346E-02f,
3.1250000002E-02f, 2.6278012978E-02f, 2.2097086913E-02f, 1.8581361173E-02f,
1.5625000001E-02f, 1.3139006489E-02f, 1.1048543457E-02f, 9.2906805866E-03f,
7.8125000006E-03f, 6.5695032447E-03f, 5.5242717285E-03f, 4.6453402934E-03f },
{ 1.0000000000E+00f, 7.0710678119E-01f, 5.0000000000E-01f, 3.5355339060E-01f,
2.5000000000E-01f, 1.7677669530E-01f, 1.2500000000E-01f, 8.8388347650E-02f,
6.2500000001E-02f, 4.4194173825E-02f, 3.1250000001E-02f, 2.2097086913E-02f,
1.5625000000E-02f, 1.1048543456E-02f, 7.8125000002E-03f, 5.5242717282E-03f,
3.9062500001E-03f, 2.7621358641E-03f, 1.9531250001E-03f, 1.3810679321E-03f,
9.7656250004E-04f, 6.9053396603E-04f, 4.8828125002E-04f, 3.4526698302E-04f,
2.4414062501E-04f, 1.7263349151E-04f, 1.2207031251E-04f, 8.6316745755E-05f,
6.1035156254E-05f, 4.3158372878E-05f, 3.0517578127E-05f, 2.1579186439E-05f }
};
public static final float TAN12[] =
{
0.0f, 0.26794919f, 0.57735027f, 1.0f,
1.73205081f, 3.73205081f, 9.9999999e10f, -3.73205081f,
-1.73205081f, -1.0f, -0.57735027f, -0.26794919f,
0.0f, 0.26794919f, 0.57735027f, 1.0f
};
// REVIEW: in java, the array lookup may well be slower than
// the actual calculation
// 576 / 18
/*
private static final int ss_div[] =
{
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6,
7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10,
11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11,
12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12,
13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13,
14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14,
15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15,
16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16,
17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17,
18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18,
19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19,
20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20,
21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22,
23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23,
24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24,
25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25,
26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26,
27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27,
28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28,
29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29,
30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30,
31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31
};
// 576 % 18
private static final int ss_mod[] =
{
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17,
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17,
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17,
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17,
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17,
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17,
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17,
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17,
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17,
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17,
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17,
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17,
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17,
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17,
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17,
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17,
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17,
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17,
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17,
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17,
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17,
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17,
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17,
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17,
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17,
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17,
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17,
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17,
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17,
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17,
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17,
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17
};
*/
private static /*final*/ int reorder_table[][]/* = loadReorderTable()*/; // SZD: will be generated on demand
/**
* Loads the data for the reorder
*/
/*private static int[][] loadReorderTable() // SZD: table will be generated
{
try
{
Class elemType = int[][].class.getComponentType();
Object o = JavaLayerUtils.deserializeArrayResource("l3reorder.ser", elemType, 6);
return (int[][])o;
}
catch (IOException ex)
{
throw new ExceptionInInitializerError(ex);
}
}*/
static int[] reorder(int scalefac_band[]) { // SZD: converted from LAME
int j = 0;
int ix[] = new int[576];
for(int sfb = 0; sfb < 13; sfb++) {
int start = scalefac_band[sfb];
int end = scalefac_band[sfb + 1];
for(int window = 0; window < 3; window++)
for(int i = start; i < end; i++)
ix[3 * i + window] = j++;
}
return ix;
}
/*static final int reorder_table_data[][]; =
{
{ 0, 4, 8, 1, 5, 9, 2, 6, 10, 3, 7, 11, 12, 16, 20, 13,
17, 21, 14, 18, 22, 15, 19, 23, 24, 28, 32, 25, 29, 33, 26, 30,
34, 27, 31, 35, 36, 42, 48, 37, 43, 49, 38, 44, 50, 39, 45, 51,
40, 46, 52, 41, 47, 53, 54, 60, 66, 55, 61, 67, 56, 62, 68, 57,
63, 69, 58, 64, 70, 59, 65, 71, 72, 80, 88, 73, 81, 89, 74, 82,
90, 75, 83, 91, 76, 84, 92, 77, 85, 93, 78, 86, 94, 79, 87, 95,
96,106,116, 97,107,117, 98,108,118, 99,109,119,100,110,120,101,
111,121,102,112,122,103,113,123,104,114,124,105,115,125,126,140,
154,127,141,155,128,142,156,129,143,157,130,144,158,131,145,159,
132,146,160,133,147,161,134,148,162,135,149,163,136,150,164,137,
151,165,138,152,166,139,153,167,168,186,204,169,187,205,170,188,
206,171,189,207,172,190,208,173,191,209,174,192,210,175,193,211,
176,194,212,177,195,213,178,196,214,179,197,215,180,198,216,181,
199,217,182,200,218,183,201,219,184,202,220,185,203,221,222,248,
274,223,249,275,224,250,276,225,251,277,226,252,278,227,253,279,
228,254,280,229,255,281,230,256,282,231,257,283,232,258,284,233,
259,285,234,260,286,235,261,287,236,262,288,237,263,289,238,264,
290,239,265,291,240,266,292,241,267,293,242,268,294,243,269,295,
244,270,296,245,271,297,246,272,298,247,273,299,300,332,364,301,
333,365,302,334,366,303,335,367,304,336,368,305,337,369,306,338,
370,307,339,371,308,340,372,309,341,373,310,342,374,311,343,375,
312,344,376,313,345,377,314,346,378,315,347,379,316,348,380,317,
349,381,318,350,382,319,351,383,320,352,384,321,353,385,322,354,
386,323,355,387,324,356,388,325,357,389,326,358,390,327,359,391,
328,360,392,329,361,393,330,362,394,331,363,395,396,438,480,397,
439,481,398,440,482,399,441,483,400,442,484,401,443,485,402,444,
486,403,445,487,404,446,488,405,447,489,406,448,490,407,449,491,
408,450,492,409,451,493,410,452,494,411,453,495,412,454,496,413,
455,497,414,456,498,415,457,499,416,458,500,417,459,501,418,460,
502,419,461,503,420,462,504,421,463,505,422,464,506,423,465,507,
424,466,508,425,467,509,426,468,510,427,469,511,428,470,512,429,
471,513,430,472,514,431,473,515,432,474,516,433,475,517,434,476,
518,435,477,519,436,478,520,437,479,521,522,540,558,523,541,559,
524,542,560,525,543,561,526,544,562,527,545,563,528,546,564,529,
547,565,530,548,566,531,549,567,532,550,568,533,551,569,534,552,
570,535,553,571,536,554,572,537,555,573,538,556,574,539,557,575},
{ 0, 4, 8, 1, 5, 9, 2, 6, 10, 3, 7, 11, 12, 16, 20, 13,
17, 21, 14, 18, 22, 15, 19, 23, 24, 28, 32, 25, 29, 33, 26, 30,
34, 27, 31, 35, 36, 42, 48, 37, 43, 49, 38, 44, 50, 39, 45, 51,
40, 46, 52, 41, 47, 53, 54, 62, 70, 55, 63, 71, 56, 64, 72, 57,
65, 73, 58, 66, 74, 59, 67, 75, 60, 68, 76, 61, 69, 77, 78, 88,
98, 79, 89, 99, 80, 90,100, 81, 91,101, 82, 92,102, 83, 93,103,
84, 94,104, 85, 95,105, 86, 96,106, 87, 97,107,108,120,132,109,
121,133,110,122,134,111,123,135,112,124,136,113,125,137,114,126,
138,115,127,139,116,128,140,117,129,141,118,130,142,119,131,143,
144,158,172,145,159,173,146,160,174,147,161,175,148,162,176,149,
163,177,150,164,178,151,165,179,152,166,180,153,167,181,154,168,
182,155,169,183,156,170,184,157,171,185,186,204,222,187,205,223,
188,206,224,189,207,225,190,208,226,191,209,227,192,210,228,193,
211,229,194,212,230,195,213,231,196,214,232,197,215,233,198,216,
234,199,217,235,200,218,236,201,219,237,202,220,238,203,221,239,
240,264,288,241,265,289,242,266,290,243,267,291,244,268,292,245,
269,293,246,270,294,247,271,295,248,272,296,249,273,297,250,274,
298,251,275,299,252,276,300,253,277,301,254,278,302,255,279,303,
256,280,304,257,281,305,258,282,306,259,283,307,260,284,308,261,
285,309,262,286,310,263,287,311,312,344,376,313,345,377,314,346,
378,315,347,379,316,348,380,317,349,381,318,350,382,319,351,383,
320,352,384,321,353,385,322,354,386,323,355,387,324,356,388,325,
357,389,326,358,390,327,359,391,328,360,392,329,361,393,330,362,
394,331,363,395,332,364,396,333,365,397,334,366,398,335,367,399,
336,368,400,337,369,401,338,370,402,339,371,403,340,372,404,341,
373,405,342,374,406,343,375,407,408,452,496,409,453,497,410,454,
498,411,455,499,412,456,500,413,457,501,414,458,502,415,459,503,
416,460,504,417,461,505,418,462,506,419,463,507,420,464,508,421,
465,509,422,466,510,423,467,511,424,468,512,425,469,513,426,470,
514,427,471,515,428,472,516,429,473,517,430,474,518,431,475,519,
432,476,520,433,477,521,434,478,522,435,479,523,436,480,524,437,
481,525,438,482,526,439,483,527,440,484,528,441,485,529,442,486,
530,443,487,531,444,488,532,445,489,533,446,490,534,447,491,535,
448,492,536,449,493,537,450,494,538,451,495,539,540,552,564,541,
553,565,542,554,566,543,555,567,544,556,568,545,557,569,546,558,
570,547,559,571,548,560,572,549,561,573,550,562,574,551,563,575},
{ 0, 4, 8, 1, 5, 9, 2, 6, 10, 3, 7, 11, 12, 16, 20, 13,
17, 21, 14, 18, 22, 15, 19, 23, 24, 28, 32, 25, 29, 33, 26, 30,
34, 27, 31, 35, 36, 42, 48, 37, 43, 49, 38, 44, 50, 39, 45, 51,
40, 46, 52, 41, 47, 53, 54, 62, 70, 55, 63, 71, 56, 64, 72, 57,
65, 73, 58, 66, 74, 59, 67, 75, 60, 68, 76, 61, 69, 77, 78, 88,
98, 79, 89, 99, 80, 90,100, 81, 91,101, 82, 92,102, 83, 93,103,
84, 94,104, 85, 95,105, 86, 96,106, 87, 97,107,108,120,132,109,
121,133,110,122,134,111,123,135,112,124,136,113,125,137,114,126,
138,115,127,139,116,128,140,117,129,141,118,130,142,119,131,143,
144,158,172,145,159,173,146,160,174,147,161,175,148,162,176,149,
163,177,150,164,178,151,165,179,152,166,180,153,167,181,154,168,
182,155,169,183,156,170,184,157,171,185,186,204,222,187,205,223,
188,206,224,189,207,225,190,208,226,191,209,227,192,210,228,193,
211,229,194,212,230,195,213,231,196,214,232,197,215,233,198,216,
234,199,217,235,200,218,236,201,219,237,202,220,238,203,221,239,
240,264,288,241,265,289,242,266,290,243,267,291,244,268,292,245,
269,293,246,270,294,247,271,295,248,272,296,249,273,297,250,274,
298,251,275,299,252,276,300,253,277,301,254,278,302,255,279,303,
256,280,304,257,281,305,258,282,306,259,283,307,260,284,308,261,
285,309,262,286,310,263,287,311,312,342,372,313,343,373,314,344,
374,315,345,375,316,346,376,317,347,377,318,348,378,319,349,379,
320,350,380,321,351,381,322,352,382,323,353,383,324,354,384,325,
355,385,326,356,386,327,357,387,328,358,388,329,359,389,330,360,
390,331,361,391,332,362,392,333,363,393,334,364,394,335,365,395,
336,366,396,337,367,397,338,368,398,339,369,399,340,370,400,341,
371,401,402,442,482,403,443,483,404,444,484,405,445,485,406,446,
486,407,447,487,408,448,488,409,449,489,410,450,490,411,451,491,
412,452,492,413,453,493,414,454,494,415,455,495,416,456,496,417,
457,497,418,458,498,419,459,499,420,460,500,421,461,501,422,462,
502,423,463,503,424,464,504,425,465,505,426,466,506,427,467,507,
428,468,508,429,469,509,430,470,510,431,471,511,432,472,512,433,
473,513,434,474,514,435,475,515,436,476,516,437,477,517,438,478,
518,439,479,519,440,480,520,441,481,521,522,540,558,523,541,559,
524,542,560,525,543,561,526,544,562,527,545,563,528,546,564,529,
547,565,530,548,566,531,549,567,532,550,568,533,551,569,534,552,
570,535,553,571,536,554,572,537,555,573,538,556,574,539,557,575},
{ 0, 4, 8, 1, 5, 9, 2, 6, 10, 3, 7, 11, 12, 16, 20, 13,
17, 21, 14, 18, 22, 15, 19, 23, 24, 28, 32, 25, 29, 33, 26, 30,
34, 27, 31, 35, 36, 40, 44, 37, 41, 45, 38, 42, 46, 39, 43, 47,
48, 54, 60, 49, 55, 61, 50, 56, 62, 51, 57, 63, 52, 58, 64, 53,
59, 65, 66, 74, 82, 67, 75, 83, 68, 76, 84, 69, 77, 85, 70, 78,
86, 71, 79, 87, 72, 80, 88, 73, 81, 89, 90,100,110, 91,101,111,
92,102,112, 93,103,113, 94,104,114, 95,105,115, 96,106,116, 97,
107,117, 98,108,118, 99,109,119,120,132,144,121,133,145,122,134,
146,123,135,147,124,136,148,125,137,149,126,138,150,127,139,151,
128,140,152,129,141,153,130,142,154,131,143,155,156,170,184,157,
171,185,158,172,186,159,173,187,160,174,188,161,175,189,162,176,
190,163,177,191,164,178,192,165,179,193,166,180,194,167,181,195,
168,182,196,169,183,197,198,216,234,199,217,235,200,218,236,201,
219,237,202,220,238,203,221,239,204,222,240,205,223,241,206,224,
242,207,225,243,208,226,244,209,227,245,210,228,246,211,229,247,
212,230,248,213,231,249,214,232,250,215,233,251,252,274,296,253,
275,297,254,276,298,255,277,299,256,278,300,257,279,301,258,280,
302,259,281,303,260,282,304,261,283,305,262,284,306,263,285,307,
264,286,308,265,287,309,266,288,310,267,289,311,268,290,312,269,
291,313,270,292,314,271,293,315,272,294,316,273,295,317,318,348,
378,319,349,379,320,350,380,321,351,381,322,352,382,323,353,383,
324,354,384,325,355,385,326,356,386,327,357,387,328,358,388,329,
359,389,330,360,390,331,361,391,332,362,392,333,363,393,334,364,
394,335,365,395,336,366,396,337,367,397,338,368,398,339,369,399,
340,370,400,341,371,401,342,372,402,343,373,403,344,374,404,345,
375,405,346,376,406,347,377,407,408,464,520,409,465,521,410,466,
522,411,467,523,412,468,524,413,469,525,414,470,526,415,471,527,
416,472,528,417,473,529,418,474,530,419,475,531,420,476,532,421,
477,533,422,478,534,423,479,535,424,480,536,425,481,537,426,482,
538,427,483,539,428,484,540,429,485,541,430,486,542,431,487,543,
432,488,544,433,489,545,434,490,546,435,491,547,436,492,548,437,
493,549,438,494,550,439,495,551,440,496,552,441,497,553,442,498,
554,443,499,555,444,500,556,445,501,557,446,502,558,447,503,559,
448,504,560,449,505,561,450,506,562,451,507,563,452,508,564,453,
509,565,454,510,566,455,511,567,456,512,568,457,513,569,458,514,
570,459,515,571,460,516,572,461,517,573,462,518,574,463,519,575},
{ 0, 4, 8, 1, 5, 9, 2, 6, 10, 3, 7, 11, 12, 16, 20, 13,
17, 21, 14, 18, 22, 15, 19, 23, 24, 28, 32, 25, 29, 33, 26, 30,
34, 27, 31, 35, 36, 40, 44, 37, 41, 45, 38, 42, 46, 39, 43, 47,
48, 54, 60, 49, 55, 61, 50, 56, 62, 51, 57, 63, 52, 58, 64, 53,
59, 65, 66, 72, 78, 67, 73, 79, 68, 74, 80, 69, 75, 81, 70, 76,
82, 71, 77, 83, 84, 94,104, 85, 95,105, 86, 96,106, 87, 97,107,
88, 98,108, 89, 99,109, 90,100,110, 91,101,111, 92,102,112, 93,
103,113,114,126,138,115,127,139,116,128,140,117,129,141,118,130,
142,119,131,143,120,132,144,121,133,145,122,134,146,123,135,147,
124,136,148,125,137,149,150,164,178,151,165,179,152,166,180,153,
167,181,154,168,182,155,169,183,156,170,184,157,171,185,158,172,
186,159,173,187,160,174,188,161,175,189,162,176,190,163,177,191,
192,208,224,193,209,225,194,210,226,195,211,227,196,212,228,197,
213,229,198,214,230,199,215,231,200,216,232,201,217,233,202,218,
234,203,219,235,204,220,236,205,221,237,206,222,238,207,223,239,
240,260,280,241,261,281,242,262,282,243,263,283,244,264,284,245,
265,285,246,266,286,247,267,287,248,268,288,249,269,289,250,270,
290,251,271,291,252,272,292,253,273,293,254,274,294,255,275,295,
256,276,296,257,277,297,258,278,298,259,279,299,300,326,352,301,
327,353,302,328,354,303,329,355,304,330,356,305,331,357,306,332,
358,307,333,359,308,334,360,309,335,361,310,336,362,311,337,363,
312,338,364,313,339,365,314,340,366,315,341,367,316,342,368,317,
343,369,318,344,370,319,345,371,320,346,372,321,347,373,322,348,
374,323,349,375,324,350,376,325,351,377,378,444,510,379,445,511,
380,446,512,381,447,513,382,448,514,383,449,515,384,450,516,385,
451,517,386,452,518,387,453,519,388,454,520,389,455,521,390,456,
522,391,457,523,392,458,524,393,459,525,394,460,526,395,461,527,
396,462,528,397,463,529,398,464,530,399,465,531,400,466,532,401,
467,533,402,468,534,403,469,535,404,470,536,405,471,537,406,472,
538,407,473,539,408,474,540,409,475,541,410,476,542,411,477,543,
412,478,544,413,479,545,414,480,546,415,481,547,416,482,548,417,
483,549,418,484,550,419,485,551,420,486,552,421,487,553,422,488,
554,423,489,555,424,490,556,425,491,557,426,492,558,427,493,559,
428,494,560,429,495,561,430,496,562,431,497,563,432,498,564,433,
499,565,434,500,566,435,501,567,436,502,568,437,503,569,438,504,
570,439,505,571,440,506,572,441,507,573,442,508,574,443,509,575},
{ 0, 4, 8, 1, 5, 9, 2, 6, 10, 3, 7, 11, 12, 16, 20, 13,
17, 21, 14, 18, 22, 15, 19, 23, 24, 28, 32, 25, 29, 33, 26, 30,
34, 27, 31, 35, 36, 40, 44, 37, 41, 45, 38, 42, 46, 39, 43, 47,
48, 54, 60, 49, 55, 61, 50, 56, 62, 51, 57, 63, 52, 58, 64, 53,
59, 65, 66, 74, 82, 67, 75, 83, 68, 76, 84, 69, 77, 85, 70, 78,
86, 71, 79, 87, 72, 80, 88, 73, 81, 89, 90,102,114, 91,103,115,
92,104,116, 93,105,117, 94,106,118, 95,107,119, 96,108,120, 97,
109,121, 98,110,122, 99,111,123,100,112,124,101,113,125,126,142,
158,127,143,159,128,144,160,129,145,161,130,146,162,131,147,163,
132,148,164,133,149,165,134,150,166,135,151,167,136,152,168,137,
153,169,138,154,170,139,155,171,140,156,172,141,157,173,174,194,
214,175,195,215,176,196,216,177,197,217,178,198,218,179,199,219,
180,200,220,181,201,221,182,202,222,183,203,223,184,204,224,185,
205,225,186,206,226,187,207,227,188,208,228,189,209,229,190,210,
230,191,211,231,192,212,232,193,213,233,234,260,286,235,261,287,
236,262,288,237,263,289,238,264,290,239,265,291,240,266,292,241,
267,293,242,268,294,243,269,295,244,270,296,245,271,297,246,272,
298,247,273,299,248,274,300,249,275,301,250,276,302,251,277,303,
252,278,304,253,279,305,254,280,306,255,281,307,256,282,308,257,
283,309,258,284,310,259,285,311,312,346,380,313,347,381,314,348,
382,315,349,383,316,350,384,317,351,385,318,352,386,319,353,387,
320,354,388,321,355,389,322,356,390,323,357,391,324,358,392,325,
359,393,326,360,394,327,361,395,328,362,396,329,363,397,330,364,
398,331,365,399,332,366,400,333,367,401,334,368,402,335,369,403,
336,370,404,337,371,405,338,372,406,339,373,407,340,374,408,341,
375,409,342,376,410,343,377,411,344,378,412,345,379,413,414,456,
498,415,457,499,416,458,500,417,459,501,418,460,502,419,461,503,
420,462,504,421,463,505,422,464,506,423,465,507,424,466,508,425,
467,509,426,468,510,427,469,511,428,470,512,429,471,513,430,472,
514,431,473,515,432,474,516,433,475,517,434,476,518,435,477,519,
436,478,520,437,479,521,438,480,522,439,481,523,440,482,524,441,
483,525,442,484,526,443,485,527,444,486,528,445,487,529,446,488,
530,447,489,531,448,490,532,449,491,533,450,492,534,451,493,535,
452,494,536,453,495,537,454,496,538,455,497,539,540,552,564,541,
553,565,542,554,566,543,555,567,544,556,568,545,557,569,546,558,
570,547,559,571,548,560,572,549,561,573,550,562,574,551,563,575}
};
*/
private static final float cs[] =
{
0.857492925712f, 0.881741997318f, 0.949628649103f, 0.983314592492f,
0.995517816065f, 0.999160558175f, 0.999899195243f, 0.999993155067f
};
private static final float ca[] =
{
-0.5144957554270f, -0.4717319685650f, -0.3133774542040f, -0.1819131996110f,
-0.0945741925262f, -0.0409655828852f, -0.0141985685725f, -0.00369997467375f
};
/************************************************************/
/* END OF L3TABLE */
/************************************************************/
/************************************************************/
/* L3TYPE */
/************************************************************/
/***************************************************************/
/* END OF L3TYPE */
/***************************************************************/
/***************************************************************/
/* INV_MDCT */
/***************************************************************/
public static final float win[][] =
{
{ -1.6141214951E-02f, -5.3603178919E-02f, -1.0070713296E-01f, -1.6280817573E-01f,
-4.9999999679E-01f, -3.8388735032E-01f, -6.2061144372E-01f, -1.1659756083E+00f,
-3.8720752656E+00f, -4.2256286556E+00f, -1.5195289984E+00f, -9.7416483388E-01f,
-7.3744074053E-01f, -1.2071067773E+00f, -5.1636156596E-01f, -4.5426052317E-01f,
-4.0715656898E-01f, -3.6969460527E-01f, -3.3876269197E-01f, -3.1242222492E-01f,
-2.8939587111E-01f, -2.6880081906E-01f, -5.0000000266E-01f, -2.3251417468E-01f,
-2.1596714708E-01f, -2.0004979098E-01f, -1.8449493497E-01f, -1.6905846094E-01f,
-1.5350360518E-01f, -1.3758624925E-01f, -1.2103922149E-01f, -2.0710679058E-01f,
-8.4752577594E-02f, -6.4157525656E-02f, -4.1131172614E-02f, -1.4790705759E-02f },
{ -1.6141214951E-02f, -5.3603178919E-02f, -1.0070713296E-01f, -1.6280817573E-01f,
-4.9999999679E-01f, -3.8388735032E-01f, -6.2061144372E-01f, -1.1659756083E+00f,
-3.8720752656E+00f, -4.2256286556E+00f, -1.5195289984E+00f, -9.7416483388E-01f,
-7.3744074053E-01f, -1.2071067773E+00f, -5.1636156596E-01f, -4.5426052317E-01f,
-4.0715656898E-01f, -3.6969460527E-01f, -3.3908542600E-01f, -3.1511810350E-01f,
-2.9642226150E-01f, -2.8184548650E-01f, -5.4119610000E-01f, -2.6213228100E-01f,
-2.5387916537E-01f, -2.3296291359E-01f, -1.9852728987E-01f, -1.5233534808E-01f,
-9.6496400054E-02f, -3.3423828516E-02f, 0.0000000000E+00f, 0.0000000000E+00f,
0.0000000000E+00f, 0.0000000000E+00f, 0.0000000000E+00f, 0.0000000000E+00f },
{ -4.8300800645E-02f, -1.5715656932E-01f, -2.8325045177E-01f, -4.2953747763E-01f,
-1.2071067795E+00f, -8.2426483178E-01f, -1.1451749106E+00f, -1.7695290101E+00f,
-4.5470225061E+00f, -3.4890531002E+00f, -7.3296292804E-01f, -1.5076514758E-01f,
0.0000000000E+00f, 0.0000000000E+00f, 0.0000000000E+00f, 0.0000000000E+00f,
0.0000000000E+00f, 0.0000000000E+00f, 0.0000000000E+00f, 0.0000000000E+00f,
0.0000000000E+00f, 0.0000000000E+00f, 0.0000000000E+00f, 0.0000000000E+00f,
0.0000000000E+00f, 0.0000000000E+00f, 0.0000000000E+00f, 0.0000000000E+00f,
0.0000000000E+00f, 0.0000000000E+00f, 0.0000000000E+00f, 0.0000000000E+00f,
0.0000000000E+00f, 0.0000000000E+00f, 0.0000000000E+00f, 0.0000000000E+00f },
{ 0.0000000000E+00f, 0.0000000000E+00f, 0.0000000000E+00f, 0.0000000000E+00f,
0.0000000000E+00f, 0.0000000000E+00f, -1.5076513660E-01f, -7.3296291107E-01f,
-3.4890530566E+00f, -4.5470224727E+00f, -1.7695290031E+00f, -1.1451749092E+00f,
-8.3137738100E-01f, -1.3065629650E+00f, -5.4142014250E-01f, -4.6528974900E-01f,
-4.1066990750E-01f, -3.7004680800E-01f, -3.3876269197E-01f, -3.1242222492E-01f,
-2.8939587111E-01f, -2.6880081906E-01f, -5.0000000266E-01f, -2.3251417468E-01f,
-2.1596714708E-01f, -2.0004979098E-01f, -1.8449493497E-01f, -1.6905846094E-01f,
-1.5350360518E-01f, -1.3758624925E-01f, -1.2103922149E-01f, -2.0710679058E-01f,
-8.4752577594E-02f, -6.4157525656E-02f, -4.1131172614E-02f, -1.4790705759E-02f }
};
/***************************************************************/
/* END OF INV_MDCT */
/***************************************************************/
class Sftable
{
public int[] l;
public int[] s;
public Sftable()
{
l = new int[5];
s = new int[3];
}
public Sftable(int[] thel, int[] thes)
{
l = thel;
s = thes;
}
}
public Sftable sftable;
public static final int nr_of_sfb_block[][][] =
{{{ 6, 5, 5, 5} , { 9, 9, 9, 9} , { 6, 9, 9, 9}},
{{ 6, 5, 7, 3} , { 9, 9,12, 6} , { 6, 9,12, 6}},
{{11,10, 0, 0} , {18,18, 0, 0} , {15,18, 0, 0}},
{{ 7, 7, 7, 0} , {12,12,12, 0} , { 6,15,12, 0}},
{{ 6, 6, 6, 3} , {12, 9, 9, 6} , { 6,12, 9, 6}},
{{ 8, 8, 5, 0} , {15,12, 9, 0} , { 6,18, 9, 0}}};
}