diff options
Diffstat (limited to 'songdbj/javazoom/jl/decoder/LayerIIIDecoder.java')
| -rw-r--r-- | songdbj/javazoom/jl/decoder/LayerIIIDecoder.java | 2439 |
1 files changed, 2439 insertions, 0 deletions
diff --git a/songdbj/javazoom/jl/decoder/LayerIIIDecoder.java b/songdbj/javazoom/jl/decoder/LayerIIIDecoder.java new file mode 100644 index 0000000..602badf --- /dev/null +++ b/songdbj/javazoom/jl/decoder/LayerIIIDecoder.java @@ -0,0 +1,2439 @@ +/* + * 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 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}}}; + + +} |