2 * 11/19/04 1.0 moved to LGPL.
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4 * 18/06/01 Michael Scheerer, Fixed bugs which causes
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5 * negative indexes in method huffmann_decode and in method
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6 * dequanisize_sample.
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8 * 16/07/01 Michael Scheerer, Catched a bug in method
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9 * huffmann_decode, which causes an outOfIndexException.
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10 * Cause : Indexnumber of 24 at SfBandIndex,
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11 * which has only a length of 22. I have simply and dirty
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12 * fixed the index to <= 22, because I'm not really be able
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13 * to fix the bug. The Indexnumber is taken from the MP3
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14 * file and the origin Ma-Player with the same code works
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17 * 02/19/99 Java Conversion by E.B, javalayer@javazoom.net
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18 *-----------------------------------------------------------------------
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19 * This program is free software; you can redistribute it and/or modify
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20 * it under the terms of the GNU Library General Public License as published
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21 * by the Free Software Foundation; either version 2 of the License, or
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22 * (at your option) any later version.
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24 * This program is distributed in the hope that it will be useful,
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25 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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26 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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27 * GNU Library General Public License for more details.
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29 * You should have received a copy of the GNU Library General Public
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30 * License along with this program; if not, write to the Free Software
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31 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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32 *----------------------------------------------------------------------
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37 * Class Implementing Layer 3 Decoder.
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41 final class LayerIIIDecoder implements FrameDecoder {
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42 final double d43 = (4.0 / 3.0);
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44 public int[] scalefac_buffer;
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46 // MDM: removed, as this wasn't being used.
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47 // private float CheckSumOut1d = 0.0f;
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48 private int CheckSumHuff = 0;
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49 private int[] is_1d;
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50 private float[][][] ro;
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51 private float[][][] lr;
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52 private float[] out_1d; // 576 samples
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53 private float[][] prevblck;
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54 private float[][] k;
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55 private int[] nonzero;
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56 private Bitstream stream;
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57 private Header header;
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58 private SynthesisFilter filter1, filter2;
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59 private Obuffer buffer; // output buffer
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60 private int which_channels;
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61 private BitReserve br;
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62 private III_side_info_t si;
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64 private temporaire2[] III_scalefac_t;
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65 private temporaire2[] scalefac;
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66 // private III_scalefac_t scalefac;
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69 private int frame_start;
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70 private int part2_start;
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71 private int channels;
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72 private int first_channel;
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73 private int last_channel;
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79 // REVIEW: these constructor arguments should be moved to the
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80 // decodeFrame() method, where possible, so that one
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81 public LayerIIIDecoder(Bitstream stream0, Header header0, SynthesisFilter filtera,
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82 SynthesisFilter filterb, Obuffer buffer0, int which_ch0) {
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83 huffcodetab.inithuff();
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84 is_1d = new int[SBLIMIT * SSLIMIT + 4];
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85 ro = new float[2][SBLIMIT][SSLIMIT];
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86 lr = new float[2][SBLIMIT][SSLIMIT];
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87 out_1d = new float[SBLIMIT * SSLIMIT];
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88 prevblck = new float[2][SBLIMIT * SSLIMIT];
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89 k = new float[2][SBLIMIT * SSLIMIT];
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90 nonzero = new int[2];
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93 III_scalefac_t = new temporaire2[2];
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94 III_scalefac_t[0] = new temporaire2();
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95 III_scalefac_t[1] = new temporaire2();
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96 scalefac = III_scalefac_t;
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99 sfBandIndex = new SBI[9]; // SZD: MPEG2.5 +3 indices
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101 { 0, 6, 12, 18, 24, 30, 36, 44, 54, 66, 80, 96, 116, 140, 168, 200, 238, 284, 336, 396,
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103 int[] s0 = { 0, 4, 8, 12, 18, 24, 32, 42, 56, 74, 100, 132, 174, 192 };
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105 { 0, 6, 12, 18, 24, 30, 36, 44, 54, 66, 80, 96, 114, 136, 162, 194, 232, 278, 330, 394,
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107 int[] s1 = { 0, 4, 8, 12, 18, 26, 36, 48, 62, 80, 104, 136, 180, 192 };
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109 { 0, 6, 12, 18, 24, 30, 36, 44, 54, 66, 80, 96, 116, 140, 168, 200, 238, 284, 336, 396,
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111 int[] s2 = { 0, 4, 8, 12, 18, 26, 36, 48, 62, 80, 104, 134, 174, 192 };
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114 { 0, 4, 8, 12, 16, 20, 24, 30, 36, 44, 52, 62, 74, 90, 110, 134, 162, 196, 238, 288, 342,
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116 int[] s3 = { 0, 4, 8, 12, 16, 22, 30, 40, 52, 66, 84, 106, 136, 192 };
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118 { 0, 4, 8, 12, 16, 20, 24, 30, 36, 42, 50, 60, 72, 88, 106, 128, 156, 190, 230, 276, 330,
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120 int[] s4 = { 0, 4, 8, 12, 16, 22, 28, 38, 50, 64, 80, 100, 126, 192 };
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122 { 0, 4, 8, 12, 16, 20, 24, 30, 36, 44, 54, 66, 82, 102, 126, 156, 194, 240, 296, 364, 448,
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124 int[] s5 = { 0, 4, 8, 12, 16, 22, 30, 42, 58, 78, 104, 138, 180, 192 };
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127 { 0, 6, 12, 18, 24, 30, 36, 44, 54, 66, 80, 96, 116, 140, 168, 200, 238, 284, 336, 396,
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129 int[] s6 = { 0, 4, 8, 12, 18, 26, 36, 48, 62, 80, 104, 134, 174, 192 };
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131 { 0, 6, 12, 18, 24, 30, 36, 44, 54, 66, 80, 96, 116, 140, 168, 200, 238, 284, 336, 396,
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133 int[] s7 = { 0, 4, 8, 12, 18, 26, 36, 48, 62, 80, 104, 134, 174, 192 };
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135 { 0, 12, 24, 36, 48, 60, 72, 88, 108, 132, 160, 192, 232, 280, 336, 400, 476, 566, 568,
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136 570, 572, 574, 576 };
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137 int[] s8 = { 0, 8, 16, 24, 36, 52, 72, 96, 124, 160, 162, 164, 166, 192 };
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139 sfBandIndex[0] = new SBI(l0, s0);
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140 sfBandIndex[1] = new SBI(l1, s1);
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141 sfBandIndex[2] = new SBI(l2, s2);
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143 sfBandIndex[3] = new SBI(l3, s3);
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144 sfBandIndex[4] = new SBI(l4, s4);
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145 sfBandIndex[5] = new SBI(l5, s5);
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147 sfBandIndex[6] = new SBI(l6, s6);
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148 sfBandIndex[7] = new SBI(l7, s7);
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149 sfBandIndex[8] = new SBI(l8, s8);
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150 // END OF L3TABLE INIT
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152 if (reorder_table == null) { // SZD: generate LUT
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153 reorder_table = new int[9][];
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154 for (int i = 0; i < 9; i++)
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155 reorder_table[i] = reorder(sfBandIndex[i].s);
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159 int[] ll0 = { 0, 6, 11, 16, 21 };
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160 int[] ss0 = { 0, 6, 12 };
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161 sftable = new Sftable(ll0, ss0);
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165 scalefac_buffer = new int[54];
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166 // END OF scalefac_buffer
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173 which_channels = which_ch0;
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176 channels = (header.mode() == Header.SINGLE_CHANNEL) ? 1 : 2;
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177 max_gr = (header.version() == Header.MPEG1) ? 2 : 1;
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180 header.sample_frequency()
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181 + ((header.version() == Header.MPEG1) ? 3 : (header.version() == Header.MPEG25_LSF) ? 6
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184 if (channels == 2) {
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185 switch (which_channels) {
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186 case OutputChannels.LEFT_CHANNEL:
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187 case OutputChannels.DOWNMIX_CHANNELS:
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188 first_channel = last_channel = 0;
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191 case OutputChannels.RIGHT_CHANNEL:
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192 first_channel = last_channel = 1;
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195 case OutputChannels.BOTH_CHANNELS:
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202 first_channel = last_channel = 0;
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205 for (int ch = 0; ch < 2; ch++)
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206 for (int j = 0; j < 576; j++)
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207 prevblck[ch][j] = 0.0f;
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209 nonzero[0] = nonzero[1] = 576;
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211 br = new BitReserve();
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212 si = new III_side_info_t();
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216 * Notify decoder that a seek is being made.
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218 public void seek_notify() {
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220 for (int ch = 0; ch < 2; ch++)
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221 for (int j = 0; j < 576; j++)
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222 prevblck[ch][j] = 0.0f;
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223 br = new BitReserve();
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226 public void decodeFrame() {
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231 * Decode one frame, filling the buffer with the output samples.
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234 // subband samples are buffered and passed to the
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235 // SynthesisFilter in one go.
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236 private float[] samples1 = new float[32];
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237 private float[] samples2 = new float[32];
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239 /* location hierarchy of decode()
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240 {header} {stream} {si}
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241 {br, flush_main, main_data_end,frame_start,nSlots,bytes_to_discard}*
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242 {gr,max_gr} // granule
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243 {ch,channels,first_channel, last_channel, which_channels} // channel
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248 {samples1,sample2} {filter1,filter2}
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250 public void decode() {
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251 int nSlots = header.slots();
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253 int gr, ch, ss, sb, sb18;
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255 int bytes_to_discard;
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260 for (i = 0; i < nSlots; i++)
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261 br.hputbuf(stream.get_bits(8)); // br < stream
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263 // br < main_data_end
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264 main_data_end = br.hsstell() >>> 3; // of previous frame
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267 if ((flush_main = (br.hsstell() & 7)) != 0) { // flush_main < br
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268 br.hgetbits(8 - flush_main); // br < flush_main
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269 main_data_end++; // main_data_end*
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272 // bytes_to_discard < GLB(frame_start,main_data_end,si)
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273 // TODO does bytes_to_discard need to go back to si???
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274 bytes_to_discard = frame_start - main_data_end - si.main_data_begin;
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276 // frame_start should be *
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277 frame_start += nSlots;
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279 if (bytes_to_discard < 0)
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282 if (main_data_end > 4096) { // main_data_end should be > than 'frame_start' and 'br'
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283 frame_start -= 4096;
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284 br.rewindNbytes(4096);
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287 for (; bytes_to_discard > 0; bytes_to_discard--) // bytes_to_discard > br
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290 // doing something from here
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292 // here 'gr' and 'max_gr' should be higher than 'ch','channels', and more
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293 for (gr = 0; gr < max_gr; gr++) { // two granules per channel
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294 // in the loop body, access set={part2_start}
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296 // 'ch', 'channels' should be higher than all locs in the below body
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297 for (ch = 0; ch < channels; ch++) {
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298 part2_start = br.hsstell(); // part2_start < br
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300 // grab scale factors from the main data.
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301 // following the scale factors is the actual compressed data
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302 if (header.version() == Header.MPEG1)
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303 get_scale_factors(ch, gr); // no need to care from this side
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304 // here move scale factor data from 'br' buffer to 'scalefac' field
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306 // MPEG-2 LSF, SZD: MPEG-2.5 LSF
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307 get_LSF_scale_factors(ch, gr); // no need to care from this side
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309 // here, decoding the compressed audio data
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310 huffman_decode(ch, gr); // no need to care from this side
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311 // System.out.println("CheckSum HuffMan = " + CheckSumHuff);
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312 dequantize_sample(ro[ch], ch, gr); // no need to care from this side
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315 stereo(gr); // no need to care from this side
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317 if ((which_channels == OutputChannels.DOWNMIX_CHANNELS) && (channels > 1))
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320 for (ch = first_channel; ch <= last_channel; ch++) { // 'ch' and 'first_channel' > the body
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323 // read set= lr,ch,gr,out_1d, sb18, ss, SSLIMIT, out_1d
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324 // write set= out_1d
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326 reorder(lr[ch], ch, gr);
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328 // for (int hb = 0;hb<576;hb++) CheckSumOut1d = CheckSumOut1d +
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330 // System.out.println("CheckSumOut1d = "+CheckSumOut1d);
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334 // for (int hb = 0;hb<576;hb++) CheckSumOut1d = CheckSumOut1d +
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336 // System.out.println("CheckSumOut1d = "+CheckSumOut1d);
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338 for (sb18 = 18; sb18 < 576; sb18 += 36) // sb18 > ss, SSLIMIT, out1d
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339 // Frequency inversion
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340 for (ss = 1; ss < SSLIMIT; ss += 2) // 'ss','SSLIMIT' > out_1d
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341 out_1d[sb18 + ss] = -out_1d[sb18 + ss]; // out1d*
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343 // 'ch', 'which_channels' should be higher than if/else body!
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344 // location set written by if/else body
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345 // = {samples1, samples2, filter1, filter2}
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346 if ((ch == 0) || (which_channels == OutputChannels.RIGHT_CHANNEL)) {
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347 for (ss = 0; ss < SSLIMIT; ss++) { // Polyphase synthesis
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349 for (sb18 = 0; sb18 < 576; sb18 += 18) {
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350 samples1[sb] = out_1d[sb18 + ss]; // out_1d > samples1
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351 // filter1.input_sample(out_1d[sb18+ss], sb);
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352 sb++; // sb should be loc*
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354 filter1.input_samples(samples1);
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355 filter1.calculate_pcm_samples(buffer);
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358 for (ss = 0; ss < SSLIMIT; ss++) { // Polyphase synthesis
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360 for (sb18 = 0; sb18 < 576; sb18 += 18) {
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361 samples2[sb] = out_1d[sb18 + ss]; // out_1d > samples2
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362 // filter2.input_sample(out_1d[sb18+ss], sb);
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365 filter2.input_samples(samples2);
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366 filter2.calculate_pcm_samples(buffer);
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373 // System.out.println("Counter = ................................."+counter);
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374 // if (counter < 609)
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376 counter++; // count should be loc*
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377 buffer.write_buffer(1); // buffer!!!
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379 // else if (counter == 609)
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391 * Reads the side info from the stream, assuming the entire. frame has been
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392 * read already. Mono : 136 bits (= 17 bytes) Stereo : 256 bits (= 32 bytes)
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394 private boolean get_side_info() {
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396 if (header.version() == Header.MPEG1) {
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398 si.main_data_begin = stream.get_bits(9);
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400 si.private_bits = stream.get_bits(5);
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402 si.private_bits = stream.get_bits(3);
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404 for (ch = 0; ch < channels; ch++) {
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405 si.ch[ch].scfsi[0] = stream.get_bits(1);
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406 si.ch[ch].scfsi[1] = stream.get_bits(1);
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407 si.ch[ch].scfsi[2] = stream.get_bits(1);
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408 si.ch[ch].scfsi[3] = stream.get_bits(1);
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411 for (gr = 0; gr < 2; gr++) {
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412 for (ch = 0; ch < channels; ch++) {
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413 si.ch[ch].gr[gr].part2_3_length = stream.get_bits(12);
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414 si.ch[ch].gr[gr].big_values = stream.get_bits(9);
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415 si.ch[ch].gr[gr].global_gain = stream.get_bits(8);
\r
416 si.ch[ch].gr[gr].scalefac_compress = stream.get_bits(4);
\r
417 si.ch[ch].gr[gr].window_switching_flag = stream.get_bits(1);
\r
418 if ((si.ch[ch].gr[gr].window_switching_flag) != 0) {
\r
419 si.ch[ch].gr[gr].block_type = stream.get_bits(2);
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420 si.ch[ch].gr[gr].mixed_block_flag = stream.get_bits(1);
\r
422 si.ch[ch].gr[gr].table_select[0] = stream.get_bits(5);
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423 si.ch[ch].gr[gr].table_select[1] = stream.get_bits(5);
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425 si.ch[ch].gr[gr].subblock_gain[0] = stream.get_bits(3);
\r
426 si.ch[ch].gr[gr].subblock_gain[1] = stream.get_bits(3);
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427 si.ch[ch].gr[gr].subblock_gain[2] = stream.get_bits(3);
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429 // Set region_count parameters since they are implicit in this case.
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431 if (si.ch[ch].gr[gr].block_type == 0) {
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432 // Side info bad: block_type == 0 in split block
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434 } else if (si.ch[ch].gr[gr].block_type == 2 && si.ch[ch].gr[gr].mixed_block_flag == 0) {
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435 si.ch[ch].gr[gr].region0_count = 8;
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437 si.ch[ch].gr[gr].region0_count = 7;
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439 si.ch[ch].gr[gr].region1_count = 20 - si.ch[ch].gr[gr].region0_count;
\r
441 si.ch[ch].gr[gr].table_select[0] = stream.get_bits(5);
\r
442 si.ch[ch].gr[gr].table_select[1] = stream.get_bits(5);
\r
443 si.ch[ch].gr[gr].table_select[2] = stream.get_bits(5);
\r
444 si.ch[ch].gr[gr].region0_count = stream.get_bits(4);
\r
445 si.ch[ch].gr[gr].region1_count = stream.get_bits(3);
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446 si.ch[ch].gr[gr].block_type = 0;
\r
448 si.ch[ch].gr[gr].preflag = stream.get_bits(1);
\r
449 si.ch[ch].gr[gr].scalefac_scale = stream.get_bits(1);
\r
450 si.ch[ch].gr[gr].count1table_select = stream.get_bits(1);
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454 } else { // MPEG-2 LSF, SZD: MPEG-2.5 LSF
\r
456 si.main_data_begin = stream.get_bits(8);
\r
458 si.private_bits = stream.get_bits(1);
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460 si.private_bits = stream.get_bits(2);
\r
462 for (ch = 0; ch < channels; ch++) {
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464 si.ch[ch].gr[0].part2_3_length = stream.get_bits(12);
\r
465 si.ch[ch].gr[0].big_values = stream.get_bits(9);
\r
466 si.ch[ch].gr[0].global_gain = stream.get_bits(8);
\r
467 si.ch[ch].gr[0].scalefac_compress = stream.get_bits(9);
\r
468 si.ch[ch].gr[0].window_switching_flag = stream.get_bits(1);
\r
470 if ((si.ch[ch].gr[0].window_switching_flag) != 0) {
\r
472 si.ch[ch].gr[0].block_type = stream.get_bits(2);
\r
473 si.ch[ch].gr[0].mixed_block_flag = stream.get_bits(1);
\r
474 si.ch[ch].gr[0].table_select[0] = stream.get_bits(5);
\r
475 si.ch[ch].gr[0].table_select[1] = stream.get_bits(5);
\r
477 si.ch[ch].gr[0].subblock_gain[0] = stream.get_bits(3);
\r
478 si.ch[ch].gr[0].subblock_gain[1] = stream.get_bits(3);
\r
479 si.ch[ch].gr[0].subblock_gain[2] = stream.get_bits(3);
\r
481 // Set region_count parameters since they are implicit in this case.
\r
483 if (si.ch[ch].gr[0].block_type == 0) {
\r
484 // Side info bad: block_type == 0 in split block
\r
486 } else if (si.ch[ch].gr[0].block_type == 2 && si.ch[ch].gr[0].mixed_block_flag == 0) {
\r
487 si.ch[ch].gr[0].region0_count = 8;
\r
489 si.ch[ch].gr[0].region0_count = 7;
\r
490 si.ch[ch].gr[0].region1_count = 20 - si.ch[ch].gr[0].region0_count;
\r
494 si.ch[ch].gr[0].table_select[0] = stream.get_bits(5);
\r
495 si.ch[ch].gr[0].table_select[1] = stream.get_bits(5);
\r
496 si.ch[ch].gr[0].table_select[2] = stream.get_bits(5);
\r
497 si.ch[ch].gr[0].region0_count = stream.get_bits(4);
\r
498 si.ch[ch].gr[0].region1_count = stream.get_bits(3);
\r
499 si.ch[ch].gr[0].block_type = 0;
\r
502 si.ch[ch].gr[0].scalefac_scale = stream.get_bits(1);
\r
503 si.ch[ch].gr[0].count1table_select = stream.get_bits(1);
\r
504 } // for(ch=0; ch<channels; ch++)
\r
505 } // if (header.version() == MPEG1)
\r
512 private void get_scale_factors(int ch, int gr) {
\r
514 gr_info_s gr_info = (si.ch[ch].gr[gr]);
\r
515 int scale_comp = gr_info.scalefac_compress;
\r
516 int length0 = slen[0][scale_comp];
\r
517 int length1 = slen[1][scale_comp];
\r
519 if ((gr_info.window_switching_flag != 0) && (gr_info.block_type == 2)) {
\r
520 if ((gr_info.mixed_block_flag) != 0) { // MIXED
\r
521 for (sfb = 0; sfb < 8; sfb++)
\r
522 scalefac[ch].l[sfb] = br.hgetbits(slen[0][gr_info.scalefac_compress]);
\r
523 for (sfb = 3; sfb < 6; sfb++)
\r
524 for (window = 0; window < 3; window++)
\r
525 scalefac[ch].s[window][sfb] = br.hgetbits(slen[0][gr_info.scalefac_compress]);
\r
526 for (sfb = 6; sfb < 12; sfb++)
\r
527 for (window = 0; window < 3; window++)
\r
528 scalefac[ch].s[window][sfb] = br.hgetbits(slen[1][gr_info.scalefac_compress]);
\r
529 for (sfb = 12, window = 0; window < 3; window++)
\r
530 scalefac[ch].s[window][sfb] = 0;
\r
534 scalefac[ch].s[0][0] = br.hgetbits(length0);
\r
535 scalefac[ch].s[1][0] = br.hgetbits(length0);
\r
536 scalefac[ch].s[2][0] = br.hgetbits(length0);
\r
537 scalefac[ch].s[0][1] = br.hgetbits(length0);
\r
538 scalefac[ch].s[1][1] = br.hgetbits(length0);
\r
539 scalefac[ch].s[2][1] = br.hgetbits(length0);
\r
540 scalefac[ch].s[0][2] = br.hgetbits(length0);
\r
541 scalefac[ch].s[1][2] = br.hgetbits(length0);
\r
542 scalefac[ch].s[2][2] = br.hgetbits(length0);
\r
543 scalefac[ch].s[0][3] = br.hgetbits(length0);
\r
544 scalefac[ch].s[1][3] = br.hgetbits(length0);
\r
545 scalefac[ch].s[2][3] = br.hgetbits(length0);
\r
546 scalefac[ch].s[0][4] = br.hgetbits(length0);
\r
547 scalefac[ch].s[1][4] = br.hgetbits(length0);
\r
548 scalefac[ch].s[2][4] = br.hgetbits(length0);
\r
549 scalefac[ch].s[0][5] = br.hgetbits(length0);
\r
550 scalefac[ch].s[1][5] = br.hgetbits(length0);
\r
551 scalefac[ch].s[2][5] = br.hgetbits(length0);
\r
552 scalefac[ch].s[0][6] = br.hgetbits(length1);
\r
553 scalefac[ch].s[1][6] = br.hgetbits(length1);
\r
554 scalefac[ch].s[2][6] = br.hgetbits(length1);
\r
555 scalefac[ch].s[0][7] = br.hgetbits(length1);
\r
556 scalefac[ch].s[1][7] = br.hgetbits(length1);
\r
557 scalefac[ch].s[2][7] = br.hgetbits(length1);
\r
558 scalefac[ch].s[0][8] = br.hgetbits(length1);
\r
559 scalefac[ch].s[1][8] = br.hgetbits(length1);
\r
560 scalefac[ch].s[2][8] = br.hgetbits(length1);
\r
561 scalefac[ch].s[0][9] = br.hgetbits(length1);
\r
562 scalefac[ch].s[1][9] = br.hgetbits(length1);
\r
563 scalefac[ch].s[2][9] = br.hgetbits(length1);
\r
564 scalefac[ch].s[0][10] = br.hgetbits(length1);
\r
565 scalefac[ch].s[1][10] = br.hgetbits(length1);
\r
566 scalefac[ch].s[2][10] = br.hgetbits(length1);
\r
567 scalefac[ch].s[0][11] = br.hgetbits(length1);
\r
568 scalefac[ch].s[1][11] = br.hgetbits(length1);
\r
569 scalefac[ch].s[2][11] = br.hgetbits(length1);
\r
570 scalefac[ch].s[0][12] = 0;
\r
571 scalefac[ch].s[1][12] = 0;
\r
572 scalefac[ch].s[2][12] = 0;
\r
575 } else { // LONG types 0,1,3
\r
577 if ((si.ch[ch].scfsi[0] == 0) || (gr == 0)) {
\r
578 scalefac[ch].l[0] = br.hgetbits(length0);
\r
579 scalefac[ch].l[1] = br.hgetbits(length0);
\r
580 scalefac[ch].l[2] = br.hgetbits(length0);
\r
581 scalefac[ch].l[3] = br.hgetbits(length0);
\r
582 scalefac[ch].l[4] = br.hgetbits(length0);
\r
583 scalefac[ch].l[5] = br.hgetbits(length0);
\r
585 if ((si.ch[ch].scfsi[1] == 0) || (gr == 0)) {
\r
586 scalefac[ch].l[6] = br.hgetbits(length0);
\r
587 scalefac[ch].l[7] = br.hgetbits(length0);
\r
588 scalefac[ch].l[8] = br.hgetbits(length0);
\r
589 scalefac[ch].l[9] = br.hgetbits(length0);
\r
590 scalefac[ch].l[10] = br.hgetbits(length0);
\r
592 if ((si.ch[ch].scfsi[2] == 0) || (gr == 0)) {
\r
593 scalefac[ch].l[11] = br.hgetbits(length1);
\r
594 scalefac[ch].l[12] = br.hgetbits(length1);
\r
595 scalefac[ch].l[13] = br.hgetbits(length1);
\r
596 scalefac[ch].l[14] = br.hgetbits(length1);
\r
597 scalefac[ch].l[15] = br.hgetbits(length1);
\r
599 if ((si.ch[ch].scfsi[3] == 0) || (gr == 0)) {
\r
600 scalefac[ch].l[16] = br.hgetbits(length1);
\r
601 scalefac[ch].l[17] = br.hgetbits(length1);
\r
602 scalefac[ch].l[18] = br.hgetbits(length1);
\r
603 scalefac[ch].l[19] = br.hgetbits(length1);
\r
604 scalefac[ch].l[20] = br.hgetbits(length1);
\r
607 scalefac[ch].l[21] = 0;
\r
608 scalefac[ch].l[22] = 0;
\r
615 // MDM: new_slen is fully initialized before use, no need
\r
616 // to reallocate array.
\r
617 private final int[] new_slen = new int[4];
\r
619 private void get_LSF_scale_data(int ch, int gr) {
\r
621 int scalefac_comp, int_scalefac_comp;
\r
622 int mode_ext = header.mode_extension();
\r
624 int blocktypenumber;
\r
625 int blocknumber = 0;
\r
627 gr_info_s gr_info = (si.ch[ch].gr[gr]);
\r
629 scalefac_comp = gr_info.scalefac_compress;
\r
631 if (gr_info.block_type == 2) {
\r
632 if (gr_info.mixed_block_flag == 0)
\r
633 blocktypenumber = 1;
\r
634 else if (gr_info.mixed_block_flag == 1)
\r
635 blocktypenumber = 2;
\r
637 blocktypenumber = 0;
\r
639 blocktypenumber = 0;
\r
642 if (!(((mode_ext == 1) || (mode_ext == 3)) && (ch == 1))) {
\r
644 if (scalefac_comp < 400) {
\r
646 new_slen[0] = (scalefac_comp >>> 4) / 5;
\r
647 new_slen[1] = (scalefac_comp >>> 4) % 5;
\r
648 new_slen[2] = (scalefac_comp & 0xF) >>> 2;
\r
649 new_slen[3] = (scalefac_comp & 3);
\r
650 si.ch[ch].gr[gr].preflag = 0;
\r
653 } else if (scalefac_comp < 500) {
\r
655 new_slen[0] = ((scalefac_comp - 400) >>> 2) / 5;
\r
656 new_slen[1] = ((scalefac_comp - 400) >>> 2) % 5;
\r
657 new_slen[2] = (scalefac_comp - 400) & 3;
\r
659 si.ch[ch].gr[gr].preflag = 0;
\r
662 } else if (scalefac_comp < 512) {
\r
664 new_slen[0] = (scalefac_comp - 500) / 3;
\r
665 new_slen[1] = (scalefac_comp - 500) % 3;
\r
668 si.ch[ch].gr[gr].preflag = 1;
\r
673 if ((((mode_ext == 1) || (mode_ext == 3)) && (ch == 1))) {
\r
674 int_scalefac_comp = scalefac_comp >>> 1;
\r
676 if (int_scalefac_comp < 180) {
\r
677 new_slen[0] = int_scalefac_comp / 36;
\r
678 new_slen[1] = (int_scalefac_comp % 36) / 6;
\r
679 new_slen[2] = (int_scalefac_comp % 36) % 6;
\r
681 si.ch[ch].gr[gr].preflag = 0;
\r
683 } else if (int_scalefac_comp < 244) {
\r
684 new_slen[0] = ((int_scalefac_comp - 180) & 0x3F) >>> 4;
\r
685 new_slen[1] = ((int_scalefac_comp - 180) & 0xF) >>> 2;
\r
686 new_slen[2] = (int_scalefac_comp - 180) & 3;
\r
688 si.ch[ch].gr[gr].preflag = 0;
\r
690 } else if (int_scalefac_comp < 255) {
\r
691 new_slen[0] = (int_scalefac_comp - 244) / 3;
\r
692 new_slen[1] = (int_scalefac_comp - 244) % 3;
\r
695 si.ch[ch].gr[gr].preflag = 0;
\r
700 for (int x = 0; x < 45; x++)
\r
702 scalefac_buffer[x] = 0;
\r
705 for (int i = 0; i < 4; i++) {
\r
706 for (int j = 0; j < nr_of_sfb_block[blocknumber][blocktypenumber][i]; j++) {
\r
707 scalefac_buffer[m] = (new_slen[i] == 0) ? 0 : br.hgetbits(new_slen[i]);
\r
710 } // for (unint32 j ...
\r
711 } // for (uint32 i ...
\r
717 private void get_LSF_scale_factors(int ch, int gr) {
\r
720 gr_info_s gr_info = (si.ch[ch].gr[gr]);
\r
722 get_LSF_scale_data(ch, gr);
\r
724 if ((gr_info.window_switching_flag != 0) && (gr_info.block_type == 2)) {
\r
725 if (gr_info.mixed_block_flag != 0) { // MIXED
\r
726 for (sfb = 0; sfb < 8; sfb++) {
\r
727 scalefac[ch].l[sfb] = scalefac_buffer[m];
\r
730 for (sfb = 3; sfb < 12; sfb++) {
\r
731 for (window = 0; window < 3; window++) {
\r
732 scalefac[ch].s[window][sfb] = scalefac_buffer[m];
\r
736 for (window = 0; window < 3; window++)
\r
737 scalefac[ch].s[window][12] = 0;
\r
741 for (sfb = 0; sfb < 12; sfb++) {
\r
742 for (window = 0; window < 3; window++) {
\r
743 scalefac[ch].s[window][sfb] = scalefac_buffer[m];
\r
748 for (window = 0; window < 3; window++)
\r
749 scalefac[ch].s[window][12] = 0;
\r
751 } else { // LONG types 0,1,3
\r
753 for (sfb = 0; sfb < 21; sfb++) {
\r
754 scalefac[ch].l[sfb] = scalefac_buffer[m];
\r
757 scalefac[ch].l[21] = 0; // Jeff
\r
758 scalefac[ch].l[22] = 0;
\r
770 private void huffman_decode(int ch, int gr) {
\r
776 int part2_3_end = part2_start + si.ch[ch].gr[gr].part2_3_length;
\r
786 // Find region boundary for short block case
\r
788 if (((si.ch[ch].gr[gr].window_switching_flag) != 0) && (si.ch[ch].gr[gr].block_type == 2)) {
\r
791 // MS: Extrahandling for 8KHZ
\r
792 region1Start = (sfreq == 8) ? 72 : 36; // sfb[9/3]*3=36 or in case 8KHZ =
\r
794 region2Start = 576; // No Region2 for short block case
\r
796 } else { // Find region boundary for long block case
\r
798 buf = si.ch[ch].gr[gr].region0_count + 1;
\r
799 buf1 = buf + si.ch[ch].gr[gr].region1_count + 1;
\r
801 if (buf1 > sfBandIndex[sfreq].l.length - 1)
\r
802 buf1 = sfBandIndex[sfreq].l.length - 1;
\r
804 region1Start = sfBandIndex[sfreq].l[buf];
\r
805 region2Start = sfBandIndex[sfreq].l[buf1]; /* MI */
\r
809 // Read bigvalues area
\r
810 for (int i = 0; i < (si.ch[ch].gr[gr].big_values << 1); i += 2) {
\r
811 if (i < region1Start)
\r
812 h = huffcodetab.ht[si.ch[ch].gr[gr].table_select[0]];
\r
813 else if (i < region2Start)
\r
814 h = huffcodetab.ht[si.ch[ch].gr[gr].table_select[1]];
\r
816 h = huffcodetab.ht[si.ch[ch].gr[gr].table_select[2]];
\r
818 huffcodetab.huffman_decoder(h, x, y, v, w, br);
\r
819 // if (index >= is_1d.length)
\r
820 // System.out.println("i0="+i+"/"+(si.ch[ch].gr[gr].big_values<<1)+" Index="+index+" is_1d="+is_1d.length);
\r
822 is_1d[index++] = x[0];
\r
823 is_1d[index++] = y[0];
\r
825 CheckSumHuff = CheckSumHuff + x[0] + y[0];
\r
826 // System.out.println("x = "+x[0]+" y = "+y[0]);
\r
829 // Read count1 area
\r
830 h = huffcodetab.ht[si.ch[ch].gr[gr].count1table_select + 32];
\r
831 num_bits = br.hsstell();
\r
833 while ((num_bits < part2_3_end) && (index < 576)) {
\r
835 huffcodetab.huffman_decoder(h, x, y, v, w, br);
\r
837 is_1d[index++] = v[0];
\r
838 is_1d[index++] = w[0];
\r
839 is_1d[index++] = x[0];
\r
840 is_1d[index++] = y[0];
\r
841 CheckSumHuff = CheckSumHuff + v[0] + w[0] + x[0] + y[0];
\r
842 // System.out.println("v = "+v[0]+" w = "+w[0]);
\r
843 // System.out.println("x = "+x[0]+" y = "+y[0]);
\r
844 num_bits = br.hsstell();
\r
847 if (num_bits > part2_3_end) {
\r
848 br.rewindNbits(num_bits - part2_3_end);
\r
852 num_bits = br.hsstell();
\r
854 // Dismiss stuffing bits
\r
855 if (num_bits < part2_3_end)
\r
856 br.hgetbits(part2_3_end - num_bits);
\r
861 nonzero[ch] = index;
\r
868 // may not be necessary
\r
869 for (; index < 576; index++)
\r
876 private void i_stereo_k_values(int is_pos, int io_type, int i) {
\r
880 } else if ((is_pos & 1) != 0) {
\r
881 k[0][i] = io[io_type][(is_pos + 1) >>> 1];
\r
885 k[1][i] = io[io_type][is_pos >>> 1];
\r
892 private void dequantize_sample(float xr[][], int ch, int gr) {
\r
893 gr_info_s gr_info = (si.ch[ch].gr[gr]);
\r
895 int next_cb_boundary;
\r
898 int index = 0, t_index, j;
\r
900 float[][] xr_1d = xr;
\r
902 // choose correct scalefactor band per block type, initalize boundary
\r
904 if ((gr_info.window_switching_flag != 0) && (gr_info.block_type == 2)) {
\r
905 if (gr_info.mixed_block_flag != 0)
\r
906 next_cb_boundary = sfBandIndex[sfreq].l[1]; // LONG blocks: 0,1,3
\r
908 cb_width = sfBandIndex[sfreq].s[1];
\r
909 next_cb_boundary = (cb_width << 2) - cb_width;
\r
913 next_cb_boundary = sfBandIndex[sfreq].l[1]; // LONG blocks: 0,1,3
\r
916 // Compute overall (global) scaling.
\r
918 g_gain = (float) Math.pow(2.0, (0.25 * (gr_info.global_gain - 210.0)));
\r
920 for (j = 0; j < nonzero[ch]; j++) {
\r
921 // Modif E.B 02/22/99
\r
922 int reste = j % SSLIMIT;
\r
923 int quotien = (int) ((j - reste) / SSLIMIT);
\r
925 xr_1d[quotien][reste] = 0.0f;
\r
927 int abv = is_1d[j];
\r
928 // Pow Array fix (11/17/04)
\r
929 if (abv < t_43.length) {
\r
931 xr_1d[quotien][reste] = g_gain * t_43[abv];
\r
933 if (-abv < t_43.length)
\r
934 xr_1d[quotien][reste] = -g_gain * t_43[-abv];
\r
936 xr_1d[quotien][reste] = -g_gain * (float) Math.pow(-abv, d43);
\r
940 xr_1d[quotien][reste] = g_gain * (float) Math.pow(abv, d43);
\r
942 xr_1d[quotien][reste] = -g_gain * (float) Math.pow(-abv, d43);
\r
947 // apply formula per block type
\r
948 for (j = 0; j < nonzero[ch]; j++) {
\r
949 // Modif E.B 02/22/99
\r
950 int reste = j % SSLIMIT;
\r
951 int quotien = (int) ((j - reste) / SSLIMIT);
\r
953 if (index == next_cb_boundary) { /* Adjust critical band boundary */
\r
954 if ((gr_info.window_switching_flag != 0) && (gr_info.block_type == 2)) {
\r
955 if (gr_info.mixed_block_flag != 0) {
\r
957 if (index == sfBandIndex[sfreq].l[8]) {
\r
958 next_cb_boundary = sfBandIndex[sfreq].s[4];
\r
959 next_cb_boundary = (next_cb_boundary << 2) - next_cb_boundary;
\r
961 cb_width = sfBandIndex[sfreq].s[4] - sfBandIndex[sfreq].s[3];
\r
963 cb_begin = sfBandIndex[sfreq].s[3];
\r
964 cb_begin = (cb_begin << 2) - cb_begin;
\r
966 } else if (index < sfBandIndex[sfreq].l[8]) {
\r
968 next_cb_boundary = sfBandIndex[sfreq].l[(++cb) + 1];
\r
972 next_cb_boundary = sfBandIndex[sfreq].s[(++cb) + 1];
\r
973 next_cb_boundary = (next_cb_boundary << 2) - next_cb_boundary;
\r
975 cb_begin = sfBandIndex[sfreq].s[cb];
\r
976 cb_width = sfBandIndex[sfreq].s[cb + 1] - cb_begin;
\r
977 cb_begin = (cb_begin << 2) - cb_begin;
\r
982 next_cb_boundary = sfBandIndex[sfreq].s[(++cb) + 1];
\r
983 next_cb_boundary = (next_cb_boundary << 2) - next_cb_boundary;
\r
985 cb_begin = sfBandIndex[sfreq].s[cb];
\r
986 cb_width = sfBandIndex[sfreq].s[cb + 1] - cb_begin;
\r
987 cb_begin = (cb_begin << 2) - cb_begin;
\r
990 } else { // long blocks
\r
992 next_cb_boundary = sfBandIndex[sfreq].l[(++cb) + 1];
\r
997 // Do long/short dependent scaling operations
\r
999 if ((gr_info.window_switching_flag != 0)
\r
1000 && (((gr_info.block_type == 2) && (gr_info.mixed_block_flag == 0)) || ((gr_info.block_type == 2)
\r
1001 && (gr_info.mixed_block_flag != 0) && (j >= 36)))) {
\r
1003 t_index = (index - cb_begin) / cb_width;
\r
1005 * xr[sb][ss] *= pow(2.0, ((-2.0 * gr_info.subblock_gain[t_index]) -(0.5
\r
1006 * * (1.0 + gr_info.scalefac_scale) scalefac[ch].s[t_index][cb])));
\r
1008 int idx = scalefac[ch].s[t_index][cb] << gr_info.scalefac_scale;
\r
1009 idx += (gr_info.subblock_gain[t_index] << 2);
\r
1011 xr_1d[quotien][reste] *= two_to_negative_half_pow[idx];
\r
1013 } else { // LONG block types 0,1,3 & 1st 2 subbands of switched blocks
\r
1015 * xr[sb][ss] *= pow(2.0, -0.5 * (1.0+gr_info.scalefac_scale)
\r
1016 * (scalefac[ch].l[cb] + gr_info.preflag * pretab[cb]));
\r
1018 int idx = scalefac[ch].l[cb];
\r
1020 if (gr_info.preflag != 0)
\r
1021 idx += pretab[cb];
\r
1023 idx = idx << gr_info.scalefac_scale;
\r
1024 xr_1d[quotien][reste] *= two_to_negative_half_pow[idx];
\r
1029 for (j = nonzero[ch]; j < 576; j++) {
\r
1030 // Modif E.B 02/22/99
\r
1031 int reste = j % SSLIMIT;
\r
1032 int quotien = (int) ((j - reste) / SSLIMIT);
\r
1037 xr_1d[quotien][reste] = 0.0f;
\r
1046 private void reorder(float xr[][], int ch, int gr) {
\r
1047 // the purpose of reordering: move 'short samples' back to their original position
\r
1048 // after reorder, the samples are no long ordered by frequency
\r
1050 // the format of input data to reorder:
\r
1051 // three small chunks of 192 samples each are combined to 576 samples ordered by frequency
\r
1053 gr_info_s gr_info = (si.ch[ch].gr[gr]);
\r
1056 int sfb, sfb_start, sfb_lines;
\r
1057 int src_line, des_line;
\r
1058 float[][] xr_1d = xr;
\r
1060 if ((gr_info.window_switching_flag != 0) && (gr_info.block_type == 2)) {
\r
1062 for (index = 0; index < 576; index++)
\r
1063 out_1d[index] = 0.0f;
\r
1065 if (gr_info.mixed_block_flag != 0) {
\r
1066 // NO REORDER FOR LOW 2 SUBBANDS
\r
1067 for (index = 0; index < 36; index++) {
\r
1068 // Modif E.B 02/22/99
\r
1069 int reste = index % SSLIMIT;
\r
1070 int quotien = (int) ((index - reste) / SSLIMIT);
\r
1071 out_1d[index] = xr_1d[quotien][reste];
\r
1073 // REORDERING FOR REST SWITCHED SHORT
\r
1075 * for( sfb=3,sfb_start=sfBandIndex[sfreq].s[3],
\r
1076 * sfb_lines=sfBandIndex[sfreq].s[4] - sfb_start; sfb < 13;
\r
1077 * sfb++,sfb_start = sfBandIndex[sfreq].s[sfb], sfb_lines =
\r
1078 * sfBandIndex[sfreq].s[sfb+1] - sfb_start ) {
\r
1080 for (sfb = 3; sfb < 13; sfb++) {
\r
1081 // System.out.println("sfreq="+sfreq+" sfb="+sfb+" sfBandIndex="+sfBandIndex.length+" sfBandIndex[sfreq].s="+sfBandIndex[sfreq].s.length);
\r
1082 sfb_start = sfBandIndex[sfreq].s[sfb];
\r
1083 sfb_lines = sfBandIndex[sfreq].s[sfb + 1] - sfb_start;
\r
1085 int sfb_start3 = (sfb_start << 2) - sfb_start;
\r
1087 for (freq = 0, freq3 = 0; freq < sfb_lines; freq++, freq3 += 3) {
\r
1089 src_line = sfb_start3 + freq;
\r
1090 des_line = sfb_start3 + freq3;
\r
1091 // Modif E.B 02/22/99
\r
1092 int reste = src_line % SSLIMIT;
\r
1093 int quotien = (int) ((src_line - reste) / SSLIMIT);
\r
1095 out_1d[des_line] = xr_1d[quotien][reste];
\r
1096 src_line += sfb_lines;
\r
1099 reste = src_line % SSLIMIT;
\r
1100 quotien = (int) ((src_line - reste) / SSLIMIT);
\r
1102 out_1d[des_line] = xr_1d[quotien][reste];
\r
1103 src_line += sfb_lines;
\r
1106 reste = src_line % SSLIMIT;
\r
1107 quotien = (int) ((src_line - reste) / SSLIMIT);
\r
1109 out_1d[des_line] = xr_1d[quotien][reste];
\r
1113 } else { // pure short
\r
1114 for (index = 0; index < 576; index++) {
\r
1115 int j = reorder_table[sfreq][index];
\r
1116 int reste = j % SSLIMIT;
\r
1117 int quotien = (int) ((j - reste) / SSLIMIT);
\r
1118 out_1d[index] = xr_1d[quotien][reste];
\r
1121 } else { // long blocks
\r
1122 for (index = 0; index < 576; index++) {
\r
1123 // Modif E.B 02/22/99
\r
1124 int reste = index % SSLIMIT;
\r
1125 int quotien = (int) ((index - reste) / SSLIMIT);
\r
1126 out_1d[index] = xr_1d[quotien][reste];
\r
1135 int[] is_pos = new int[576];
\r
1136 float[] is_ratio = new float[576];
\r
1138 private void stereo(int gr) {
\r
1141 if (channels == 1) { // mono , bypass xr[0][][] to lr[0][][]
\r
1143 for (sb = 0; sb < SBLIMIT; sb++)
\r
1144 for (ss = 0; ss < SSLIMIT; ss += 3) {
\r
1145 lr[0][sb][ss] = ro[0][sb][ss];
\r
1146 lr[0][sb][ss + 1] = ro[0][sb][ss + 1];
\r
1147 lr[0][sb][ss + 2] = ro[0][sb][ss + 2];
\r
1152 gr_info_s gr_info = (si.ch[0].gr[gr]);
\r
1153 int mode_ext = header.mode_extension();
\r
1156 int lines, temp, temp2;
\r
1158 boolean ms_stereo = ((header.mode() == Header.JOINT_STEREO) && ((mode_ext & 0x2) != 0));
\r
1159 boolean i_stereo = ((header.mode() == Header.JOINT_STEREO) && ((mode_ext & 0x1) != 0));
\r
1161 ((header.version() == Header.MPEG2_LSF || header.version() == Header.MPEG25_LSF)); // SZD
\r
1163 int io_type = (gr_info.scalefac_compress & 1);
\r
1167 for (i = 0; i < 576; i++) {
\r
1170 is_ratio[i] = 0.0f;
\r
1174 if ((gr_info.window_switching_flag != 0) && (gr_info.block_type == 2)) {
\r
1175 if (gr_info.mixed_block_flag != 0) {
\r
1179 for (int j = 0; j < 3; j++) {
\r
1182 for (sfb = 12; sfb >= 3; sfb--) {
\r
1183 i = sfBandIndex[sfreq].s[sfb];
\r
1184 lines = sfBandIndex[sfreq].s[sfb + 1] - i;
\r
1185 i = (i << 2) - i + (j + 1) * lines - 1;
\r
1187 while (lines > 0) {
\r
1188 if (ro[1][i / 18][i % 18] != 0.0f) {
\r
1189 // MDM: in java, array access is very slow.
\r
1190 // Is quicker to compute div and mod values.
\r
1191 // if (ro[1][ss_div[i]][ss_mod[i]] != 0.0f) {
\r
1200 } // while (lines > 0)
\r
1202 } // for (sfb=12 ...
\r
1205 if (sfb > max_sfb)
\r
1208 while (sfb < 12) {
\r
1209 temp = sfBandIndex[sfreq].s[sfb];
\r
1210 sb = sfBandIndex[sfreq].s[sfb + 1] - temp;
\r
1211 i = (temp << 2) - temp + j * sb;
\r
1213 for (; sb > 0; sb--) {
\r
1214 is_pos[i] = scalefac[1].s[j][sfb];
\r
1215 if (is_pos[i] != 7)
\r
1217 i_stereo_k_values(is_pos[i], io_type, i);
\r
1219 is_ratio[i] = TAN12[is_pos[i]];
\r
1222 } // for (; sb>0...
\r
1224 } // while (sfb < 12)
\r
1225 sfb = sfBandIndex[sfreq].s[10];
\r
1226 sb = sfBandIndex[sfreq].s[11] - sfb;
\r
1227 sfb = (sfb << 2) - sfb + j * sb;
\r
1228 temp = sfBandIndex[sfreq].s[11];
\r
1229 sb = sfBandIndex[sfreq].s[12] - temp;
\r
1230 i = (temp << 2) - temp + j * sb;
\r
1232 for (; sb > 0; sb--) {
\r
1233 is_pos[i] = is_pos[sfb];
\r
1236 k[0][i] = k[0][sfb];
\r
1237 k[1][i] = k[1][sfb];
\r
1239 is_ratio[i] = is_ratio[sfb];
\r
1242 } // for (; sb > 0 ...
\r
1244 if (max_sfb <= 3) {
\r
1249 if (ro[1][i][ss] != 0.0f) {
\r
1250 sb = (i << 4) + (i << 1) + ss;
\r
1261 while (sfBandIndex[sfreq].l[i] <= sb)
\r
1264 i = sfBandIndex[sfreq].l[i];
\r
1265 for (; sfb < 8; sfb++) {
\r
1266 sb = sfBandIndex[sfreq].l[sfb + 1] - sfBandIndex[sfreq].l[sfb];
\r
1267 for (; sb > 0; sb--) {
\r
1268 is_pos[i] = scalefac[1].l[sfb];
\r
1269 if (is_pos[i] != 7)
\r
1271 i_stereo_k_values(is_pos[i], io_type, i);
\r
1273 is_ratio[i] = TAN12[is_pos[i]];
\r
1275 } // for (; sb>0 ...
\r
1276 } // for (; sfb<8 ...
\r
1278 } else { // if (gr_info.mixed_block_flag)
\r
1279 for (int j = 0; j < 3; j++) {
\r
1282 for (sfb = 12; sfb >= 0; sfb--) {
\r
1283 temp = sfBandIndex[sfreq].s[sfb];
\r
1284 lines = sfBandIndex[sfreq].s[sfb + 1] - temp;
\r
1285 i = (temp << 2) - temp + (j + 1) * lines - 1;
\r
1287 while (lines > 0) {
\r
1288 if (ro[1][i / 18][i % 18] != 0.0f) {
\r
1289 // MDM: in java, array access is very slow.
\r
1290 // Is quicker to compute div and mod values.
\r
1291 // if (ro[1][ss_div[i]][ss_mod[i]] != 0.0f) {
\r
1298 } // while (lines > 0) */
\r
1300 } // for (sfb=12 ...
\r
1302 while (sfb < 12) {
\r
1303 temp = sfBandIndex[sfreq].s[sfb];
\r
1304 sb = sfBandIndex[sfreq].s[sfb + 1] - temp;
\r
1305 i = (temp << 2) - temp + j * sb;
\r
1306 for (; sb > 0; sb--) {
\r
1307 is_pos[i] = scalefac[1].s[j][sfb];
\r
1308 if (is_pos[i] != 7)
\r
1310 i_stereo_k_values(is_pos[i], io_type, i);
\r
1312 is_ratio[i] = TAN12[is_pos[i]];
\r
1314 } // for (; sb>0 ...
\r
1316 } // while (sfb<12)
\r
1318 temp = sfBandIndex[sfreq].s[10];
\r
1319 temp2 = sfBandIndex[sfreq].s[11];
\r
1320 sb = temp2 - temp;
\r
1321 sfb = (temp << 2) - temp + j * sb;
\r
1322 sb = sfBandIndex[sfreq].s[12] - temp2;
\r
1323 i = (temp2 << 2) - temp2 + j * sb;
\r
1325 for (; sb > 0; sb--) {
\r
1326 is_pos[i] = is_pos[sfb];
\r
1329 k[0][i] = k[0][sfb];
\r
1330 k[1][i] = k[1][sfb];
\r
1332 is_ratio[i] = is_ratio[sfb];
\r
1335 } // for (; sb>0 ...
\r
1338 } else { // if (gr_info.window_switching_flag ...
\r
1343 if (ro[1][i][ss] != 0.0f) {
\r
1344 sb = (i << 4) + (i << 1) + ss;
\r
1355 while (sfBandIndex[sfreq].l[i] <= sb)
\r
1359 i = sfBandIndex[sfreq].l[i];
\r
1360 for (; sfb < 21; sfb++) {
\r
1361 sb = sfBandIndex[sfreq].l[sfb + 1] - sfBandIndex[sfreq].l[sfb];
\r
1362 for (; sb > 0; sb--) {
\r
1363 is_pos[i] = scalefac[1].l[sfb];
\r
1364 if (is_pos[i] != 7)
\r
1366 i_stereo_k_values(is_pos[i], io_type, i);
\r
1368 is_ratio[i] = TAN12[is_pos[i]];
\r
1372 sfb = sfBandIndex[sfreq].l[20];
\r
1373 for (sb = 576 - sfBandIndex[sfreq].l[21]; (sb > 0) && (i < 576); sb--) {
\r
1374 is_pos[i] = is_pos[sfb]; // error here : i >=576
\r
1377 k[0][i] = k[0][sfb];
\r
1378 k[1][i] = k[1][sfb];
\r
1380 is_ratio[i] = is_ratio[sfb];
\r
1383 } // if (gr_info.mixed_block_flag)
\r
1384 } // if (gr_info.window_switching_flag ...
\r
1385 } // if (i_stereo)
\r
1388 for (sb = 0; sb < SBLIMIT; sb++)
\r
1389 for (ss = 0; ss < SSLIMIT; ss++) {
\r
1390 if (is_pos[i] == 7) {
\r
1392 lr[0][sb][ss] = (ro[0][sb][ss] + ro[1][sb][ss]) * 0.707106781f;
\r
1393 lr[1][sb][ss] = (ro[0][sb][ss] - ro[1][sb][ss]) * 0.707106781f;
\r
1395 lr[0][sb][ss] = ro[0][sb][ss];
\r
1396 lr[1][sb][ss] = ro[1][sb][ss];
\r
1398 } else if (i_stereo) {
\r
1401 lr[0][sb][ss] = ro[0][sb][ss] * k[0][i];
\r
1402 lr[1][sb][ss] = ro[0][sb][ss] * k[1][i];
\r
1404 lr[1][sb][ss] = ro[0][sb][ss] / (float) (1 + is_ratio[i]);
\r
1405 lr[0][sb][ss] = lr[1][sb][ss] * is_ratio[i];
\r
1409 * else { System.out.println("Error in stereo processing\n"); }
\r
1414 } // channels == 2
\r
1421 private void antialias(int ch, int gr) {
\r
1422 int sb18, ss, sb18lim;
\r
1423 gr_info_s gr_info = (si.ch[ch].gr[gr]);
\r
1424 // 31 alias-reduction operations between each pair of sub-bands
\r
1425 // with 8 butterflies between each pair
\r
1427 if ((gr_info.window_switching_flag != 0) && (gr_info.block_type == 2)
\r
1428 && !(gr_info.mixed_block_flag != 0))
\r
1431 if ((gr_info.window_switching_flag != 0) && (gr_info.mixed_block_flag != 0)
\r
1432 && (gr_info.block_type == 2)) {
\r
1438 for (sb18 = 0; sb18 < sb18lim; sb18 += 18) {
\r
1439 for (ss = 0; ss < 8; ss++) {
\r
1440 int src_idx1 = sb18 + 17 - ss;
\r
1441 int src_idx2 = sb18 + 18 + ss;
\r
1442 float bu = out_1d[src_idx1];
\r
1443 float bd = out_1d[src_idx2];
\r
1444 out_1d[src_idx1] = (bu * cs[ss]) - (bd * ca[ss]);
\r
1445 out_1d[src_idx2] = (bd * cs[ss]) + (bu * ca[ss]);
\r
1454 // MDM: tsOutCopy and rawout do not need initializing, so the arrays
\r
1456 float[] tsOutCopy = new float[18];
\r
1457 float[] rawout = new float[36];
\r
1459 private void hybrid(int ch, int gr) {
\r
1462 gr_info_s gr_info = (si.ch[ch].gr[gr]);
\r
1467 for (sb18 = 0; sb18 < 576; sb18 += 18) {
\r
1469 ((gr_info.window_switching_flag != 0) && (gr_info.mixed_block_flag != 0) && (sb18 < 36))
\r
1470 ? 0 : gr_info.block_type;
\r
1473 // Modif E.B 02/22/99
\r
1474 for (int cc = 0; cc < 18; cc++)
\r
1475 tsOutCopy[cc] = tsOut[cc + sb18];
\r
1477 inv_mdct(tsOutCopy, rawout, bt);
\r
1479 for (int cc = 0; cc < 18; cc++)
\r
1480 tsOut[cc + sb18] = tsOutCopy[cc];
\r
1483 // overlap addition
\r
1484 prvblk = prevblck;
\r
1486 tsOut[0 + sb18] = rawout[0] + prvblk[ch][sb18 + 0];
\r
1487 prvblk[ch][sb18 + 0] = rawout[18];
\r
1488 tsOut[1 + sb18] = rawout[1] + prvblk[ch][sb18 + 1];
\r
1489 prvblk[ch][sb18 + 1] = rawout[19];
\r
1490 tsOut[2 + sb18] = rawout[2] + prvblk[ch][sb18 + 2];
\r
1491 prvblk[ch][sb18 + 2] = rawout[20];
\r
1492 tsOut[3 + sb18] = rawout[3] + prvblk[ch][sb18 + 3];
\r
1493 prvblk[ch][sb18 + 3] = rawout[21];
\r
1494 tsOut[4 + sb18] = rawout[4] + prvblk[ch][sb18 + 4];
\r
1495 prvblk[ch][sb18 + 4] = rawout[22];
\r
1496 tsOut[5 + sb18] = rawout[5] + prvblk[ch][sb18 + 5];
\r
1497 prvblk[ch][sb18 + 5] = rawout[23];
\r
1498 tsOut[6 + sb18] = rawout[6] + prvblk[ch][sb18 + 6];
\r
1499 prvblk[ch][sb18 + 6] = rawout[24];
\r
1500 tsOut[7 + sb18] = rawout[7] + prvblk[ch][sb18 + 7];
\r
1501 prvblk[ch][sb18 + 7] = rawout[25];
\r
1502 tsOut[8 + sb18] = rawout[8] + prvblk[ch][sb18 + 8];
\r
1503 prvblk[ch][sb18 + 8] = rawout[26];
\r
1504 tsOut[9 + sb18] = rawout[9] + prvblk[ch][sb18 + 9];
\r
1505 prvblk[ch][sb18 + 9] = rawout[27];
\r
1506 tsOut[10 + sb18] = rawout[10] + prvblk[ch][sb18 + 10];
\r
1507 prvblk[ch][sb18 + 10] = rawout[28];
\r
1508 tsOut[11 + sb18] = rawout[11] + prvblk[ch][sb18 + 11];
\r
1509 prvblk[ch][sb18 + 11] = rawout[29];
\r
1510 tsOut[12 + sb18] = rawout[12] + prvblk[ch][sb18 + 12];
\r
1511 prvblk[ch][sb18 + 12] = rawout[30];
\r
1512 tsOut[13 + sb18] = rawout[13] + prvblk[ch][sb18 + 13];
\r
1513 prvblk[ch][sb18 + 13] = rawout[31];
\r
1514 tsOut[14 + sb18] = rawout[14] + prvblk[ch][sb18 + 14];
\r
1515 prvblk[ch][sb18 + 14] = rawout[32];
\r
1516 tsOut[15 + sb18] = rawout[15] + prvblk[ch][sb18 + 15];
\r
1517 prvblk[ch][sb18 + 15] = rawout[33];
\r
1518 tsOut[16 + sb18] = rawout[16] + prvblk[ch][sb18 + 16];
\r
1519 prvblk[ch][sb18 + 16] = rawout[34];
\r
1520 tsOut[17 + sb18] = rawout[17] + prvblk[ch][sb18 + 17];
\r
1521 prvblk[ch][sb18 + 17] = rawout[35];
\r
1528 private void do_downmix() {
\r
1529 for (int sb = 0; sb < SSLIMIT; sb++) {
\r
1530 for (int ss = 0; ss < SSLIMIT; ss += 3) {
\r
1531 lr[0][sb][ss] = (lr[0][sb][ss] + lr[1][sb][ss]) * 0.5f;
\r
1532 lr[0][sb][ss + 1] = (lr[0][sb][ss + 1] + lr[1][sb][ss + 1]) * 0.5f;
\r
1533 lr[0][sb][ss + 2] = (lr[0][sb][ss + 2] + lr[1][sb][ss + 2]) * 0.5f;
\r
1542 public void inv_mdct(float[] in, float[] out, int block_type) {
\r
1546 float tmpf_0, tmpf_1, tmpf_2, tmpf_3, tmpf_4, tmpf_5, tmpf_6, tmpf_7, tmpf_8, tmpf_9;
\r
1547 float tmpf_10, tmpf_11, tmpf_12, tmpf_13, tmpf_14, tmpf_15, tmpf_16, tmpf_17;
\r
1564 tmpf_15 = tmpf_16 = tmpf_17 = 0.0f;
\r
1566 if (block_type == 2) {
\r
1570 * Under MicrosoftVM 2922, This causes a GPF, or At best, an
\r
1571 * ArrayIndexOutOfBoundsExceptin. for(int p=0;p<36;p+=9) { out[p] =
\r
1572 * out[p+1] = out[p+2] = out[p+3] = out[p+4] = out[p+5] = out[p+6] =
\r
1573 * out[p+7] = out[p+8] = 0.0f; }
\r
1614 for (i = 0; i < 3; i++) {
\r
1616 // Begin 12 point IDCT
\r
1617 // Input aliasing for 12 pt IDCT
\r
1618 in[15 + i] += in[12 + i];
\r
1619 in[12 + i] += in[9 + i];
\r
1620 in[9 + i] += in[6 + i];
\r
1621 in[6 + i] += in[3 + i];
\r
1622 in[3 + i] += in[0 + i];
\r
1624 // Input aliasing on odd indices (for 6 point IDCT)
\r
1625 in[15 + i] += in[9 + i];
\r
1626 in[9 + i] += in[3 + i];
\r
1628 // 3 point IDCT on even indices
\r
1629 float pp1, pp2, sum;
\r
1630 pp2 = in[12 + i] * 0.500000000f;
\r
1631 pp1 = in[6 + i] * 0.866025403f;
\r
1632 sum = in[0 + i] + pp2;
\r
1633 tmpf_1 = in[0 + i] - in[12 + i];
\r
1634 tmpf_0 = sum + pp1;
\r
1635 tmpf_2 = sum - pp1;
\r
1637 // End 3 point IDCT on even indices
\r
1638 // 3 point IDCT on odd indices (for 6 point IDCT)
\r
1639 pp2 = in[15 + i] * 0.500000000f;
\r
1640 pp1 = in[9 + i] * 0.866025403f;
\r
1641 sum = in[3 + i] + pp2;
\r
1642 tmpf_4 = in[3 + i] - in[15 + i];
\r
1643 tmpf_5 = sum + pp1;
\r
1644 tmpf_3 = sum - pp1;
\r
1645 // End 3 point IDCT on odd indices
\r
1646 // Twiddle factors on odd indices (for 6 point IDCT)
\r
1648 tmpf_3 *= 1.931851653f;
\r
1649 tmpf_4 *= 0.707106781f;
\r
1650 tmpf_5 *= 0.517638090f;
\r
1652 // Output butterflies on 2 3 point IDCT's (for 6 point IDCT)
\r
1653 float save = tmpf_0;
\r
1655 tmpf_5 = save - tmpf_5;
\r
1658 tmpf_4 = save - tmpf_4;
\r
1661 tmpf_3 = save - tmpf_3;
\r
1663 // End 6 point IDCT
\r
1664 // Twiddle factors on indices (for 12 point IDCT)
\r
1666 tmpf_0 *= 0.504314480f;
\r
1667 tmpf_1 *= 0.541196100f;
\r
1668 tmpf_2 *= 0.630236207f;
\r
1669 tmpf_3 *= 0.821339815f;
\r
1670 tmpf_4 *= 1.306562965f;
\r
1671 tmpf_5 *= 3.830648788f;
\r
1673 // End 12 point IDCT
\r
1675 // Shift to 12 point modified IDCT, multiply by window type 2
\r
1676 tmpf_8 = -tmpf_0 * 0.793353340f;
\r
1677 tmpf_9 = -tmpf_0 * 0.608761429f;
\r
1678 tmpf_7 = -tmpf_1 * 0.923879532f;
\r
1679 tmpf_10 = -tmpf_1 * 0.382683432f;
\r
1680 tmpf_6 = -tmpf_2 * 0.991444861f;
\r
1681 tmpf_11 = -tmpf_2 * 0.130526192f;
\r
1684 tmpf_1 = tmpf_4 * 0.382683432f;
\r
1685 tmpf_2 = tmpf_5 * 0.608761429f;
\r
1687 tmpf_3 = -tmpf_5 * 0.793353340f;
\r
1688 tmpf_4 = -tmpf_4 * 0.923879532f;
\r
1689 tmpf_5 = -tmpf_0 * 0.991444861f;
\r
1691 tmpf_0 *= 0.130526192f;
\r
1693 out[six_i + 6] += tmpf_0;
\r
1694 out[six_i + 7] += tmpf_1;
\r
1695 out[six_i + 8] += tmpf_2;
\r
1696 out[six_i + 9] += tmpf_3;
\r
1697 out[six_i + 10] += tmpf_4;
\r
1698 out[six_i + 11] += tmpf_5;
\r
1699 out[six_i + 12] += tmpf_6;
\r
1700 out[six_i + 13] += tmpf_7;
\r
1701 out[six_i + 14] += tmpf_8;
\r
1702 out[six_i + 15] += tmpf_9;
\r
1703 out[six_i + 16] += tmpf_10;
\r
1704 out[six_i + 17] += tmpf_11;
\r
1710 // input aliasing for 36 point IDCT
\r
1729 // 18 point IDCT for odd indices
\r
1730 // input aliasing for 18 point IDCT
\r
1740 float tmp0, tmp1, tmp2, tmp3, tmp4, tmp0_, tmp1_, tmp2_, tmp3_;
\r
1741 float tmp0o, tmp1o, tmp2o, tmp3o, tmp4o, tmp0_o, tmp1_o, tmp2_o, tmp3_o;
\r
1743 // Fast 9 Point Inverse Discrete Cosine Transform
\r
1745 // By Francois-Raymond Boyer
\r
1746 // mailto:boyerf@iro.umontreal.ca
\r
1747 // http://www.iro.umontreal.ca/~boyerf
\r
1749 // The code has been optimized for Intel processors
\r
1750 // (takes a lot of time to convert float to and from iternal FPU
\r
1751 // representation)
\r
1753 // It is a simple "factorization" of the IDCT matrix.
\r
1755 // 9 point IDCT on even indices
\r
1757 // 5 points on odd indices (not realy an IDCT)
\r
1758 float i00 = in[0] + in[0];
\r
1759 float iip12 = i00 + in[12];
\r
1762 iip12 + in[4] * 1.8793852415718f + in[8] * 1.532088886238f + in[16] * 0.34729635533386f;
\r
1763 tmp1 = i00 + in[4] - in[8] - in[12] - in[12] - in[16];
\r
1765 iip12 - in[4] * 0.34729635533386f - in[8] * 1.8793852415718f + in[16] * 1.532088886238f;
\r
1767 iip12 - in[4] * 1.532088886238f + in[8] * 0.34729635533386f - in[16] * 1.8793852415718f;
\r
1768 tmp4 = in[0] - in[4] + in[8] - in[12] + in[16];
\r
1770 // 4 points on even indices
\r
1771 float i66_ = in[6] * 1.732050808f; // Sqrt[3]
\r
1774 in[2] * 1.9696155060244f + i66_ + in[10] * 1.2855752193731f + in[14] * 0.68404028665134f;
\r
1775 tmp1_ = (in[2] - in[10] - in[14]) * 1.732050808f;
\r
1777 in[2] * 1.2855752193731f - i66_ - in[10] * 0.68404028665134f + in[14] * 1.9696155060244f;
\r
1779 in[2] * 0.68404028665134f - i66_ + in[10] * 1.9696155060244f - in[14] * 1.2855752193731f;
\r
1781 // 9 point IDCT on odd indices
\r
1782 // 5 points on odd indices (not realy an IDCT)
\r
1783 float i0 = in[0 + 1] + in[0 + 1];
\r
1784 float i0p12 = i0 + in[12 + 1];
\r
1787 i0p12 + in[4 + 1] * 1.8793852415718f + in[8 + 1] * 1.532088886238f + in[16 + 1]
\r
1788 * 0.34729635533386f;
\r
1789 tmp1o = i0 + in[4 + 1] - in[8 + 1] - in[12 + 1] - in[12 + 1] - in[16 + 1];
\r
1791 i0p12 - in[4 + 1] * 0.34729635533386f - in[8 + 1] * 1.8793852415718f + in[16 + 1]
\r
1792 * 1.532088886238f;
\r
1794 i0p12 - in[4 + 1] * 1.532088886238f + in[8 + 1] * 0.34729635533386f - in[16 + 1]
\r
1795 * 1.8793852415718f;
\r
1796 tmp4o = (in[0 + 1] - in[4 + 1] + in[8 + 1] - in[12 + 1] + in[16 + 1]) * 0.707106781f; // Twiddled
\r
1798 // 4 points on even indices
\r
1799 float i6_ = in[6 + 1] * 1.732050808f; // Sqrt[3]
\r
1802 in[2 + 1] * 1.9696155060244f + i6_ + in[10 + 1] * 1.2855752193731f + in[14 + 1]
\r
1803 * 0.68404028665134f;
\r
1804 tmp1_o = (in[2 + 1] - in[10 + 1] - in[14 + 1]) * 1.732050808f;
\r
1806 in[2 + 1] * 1.2855752193731f - i6_ - in[10 + 1] * 0.68404028665134f + in[14 + 1]
\r
1807 * 1.9696155060244f;
\r
1809 in[2 + 1] * 0.68404028665134f - i6_ + in[10 + 1] * 1.9696155060244f - in[14 + 1]
\r
1810 * 1.2855752193731f;
\r
1812 // Twiddle factors on odd indices
\r
1814 // Butterflies on 9 point IDCT's
\r
1816 // twiddle factors for 36 point IDCT
\r
1820 o = (tmp0o + tmp0_o) * 0.501909918f;
\r
1824 o = (tmp1o + tmp1_o) * 0.517638090f;
\r
1828 o = (tmp2o + tmp2_o) * 0.551688959f;
\r
1832 o = (tmp3o + tmp3_o) * 0.610387294f;
\r
1835 tmpf_4 = tmp4 + tmp4o;
\r
1836 tmpf_13 = tmp4 - tmp4o;
\r
1838 o = (tmp3o - tmp3_o) * 0.871723397f;
\r
1842 o = (tmp2o - tmp2_o) * 1.183100792f;
\r
1846 o = (tmp1o - tmp1_o) * 1.931851653f;
\r
1850 o = (tmp0o - tmp0_o) * 5.736856623f;
\r
1854 // end 36 point IDCT */
\r
1855 // shift to modified IDCT
\r
1856 win_bt = win[block_type];
\r
1858 out[0] = -tmpf_9 * win_bt[0];
\r
1859 out[1] = -tmpf_10 * win_bt[1];
\r
1860 out[2] = -tmpf_11 * win_bt[2];
\r
1861 out[3] = -tmpf_12 * win_bt[3];
\r
1862 out[4] = -tmpf_13 * win_bt[4];
\r
1863 out[5] = -tmpf_14 * win_bt[5];
\r
1864 out[6] = -tmpf_15 * win_bt[6];
\r
1865 out[7] = -tmpf_16 * win_bt[7];
\r
1866 out[8] = -tmpf_17 * win_bt[8];
\r
1867 out[9] = tmpf_17 * win_bt[9];
\r
1868 out[10] = tmpf_16 * win_bt[10];
\r
1869 out[11] = tmpf_15 * win_bt[11];
\r
1870 out[12] = tmpf_14 * win_bt[12];
\r
1871 out[13] = tmpf_13 * win_bt[13];
\r
1872 out[14] = tmpf_12 * win_bt[14];
\r
1873 out[15] = tmpf_11 * win_bt[15];
\r
1874 out[16] = tmpf_10 * win_bt[16];
\r
1875 out[17] = tmpf_9 * win_bt[17];
\r
1876 out[18] = tmpf_8 * win_bt[18];
\r
1877 out[19] = tmpf_7 * win_bt[19];
\r
1878 out[20] = tmpf_6 * win_bt[20];
\r
1879 out[21] = tmpf_5 * win_bt[21];
\r
1880 out[22] = tmpf_4 * win_bt[22];
\r
1881 out[23] = tmpf_3 * win_bt[23];
\r
1882 out[24] = tmpf_2 * win_bt[24];
\r
1883 out[25] = tmpf_1 * win_bt[25];
\r
1884 out[26] = tmpf_0 * win_bt[26];
\r
1885 out[27] = tmpf_0 * win_bt[27];
\r
1886 out[28] = tmpf_1 * win_bt[28];
\r
1887 out[29] = tmpf_2 * win_bt[29];
\r
1888 out[30] = tmpf_3 * win_bt[30];
\r
1889 out[31] = tmpf_4 * win_bt[31];
\r
1890 out[32] = tmpf_5 * win_bt[32];
\r
1891 out[33] = tmpf_6 * win_bt[33];
\r
1892 out[34] = tmpf_7 * win_bt[34];
\r
1893 out[35] = tmpf_8 * win_bt[35];
\r
1897 private int counter = 0;
\r
1898 private static final int SSLIMIT = 18;
\r
1899 private static final int SBLIMIT = 32;
\r
1901 // Size of the table of whole numbers raised to 4/3 power.
\r
1902 // This may be adjusted for performance without any problems.
\r
1903 // public static final int POW_TABLE_LIMIT=512;
\r
1905 /************************************************************/
\r
1907 /************************************************************/
\r
1909 static class SBI {
\r
1918 public SBI(int[] thel, int[] thes) {
\r
1924 static class gr_info_s {
\r
1925 public int part2_3_length = 0;
\r
1926 public int big_values = 0;
\r
1927 public int global_gain = 0;
\r
1928 public int scalefac_compress = 0;
\r
1929 public int window_switching_flag = 0;
\r
1930 public int block_type = 0;
\r
1931 public int mixed_block_flag = 0;
\r
1932 public int[] table_select;
\r
1933 public int[] subblock_gain;
\r
1934 public int region0_count = 0;
\r
1935 public int region1_count = 0;
\r
1936 public int preflag = 0;
\r
1937 public int scalefac_scale = 0;
\r
1938 public int count1table_select = 0;
\r
1941 * Dummy Constructor
\r
1943 public gr_info_s() {
\r
1944 table_select = new int[3];
\r
1945 subblock_gain = new int[3];
\r
1949 static class temporaire {
\r
1950 public int[] scfsi;
\r
1951 public gr_info_s[] gr;
\r
1954 * Dummy Constructor
\r
1956 public temporaire() {
\r
1957 scfsi = new int[4];
\r
1958 gr = new gr_info_s[2];
\r
1959 gr[0] = new gr_info_s();
\r
1960 gr[1] = new gr_info_s();
\r
1964 static class III_side_info_t {
\r
1966 public int main_data_begin = 0;
\r
1967 public int private_bits = 0;
\r
1968 public temporaire[] ch;
\r
1971 * Dummy Constructor
\r
1973 public III_side_info_t() {
\r
1974 ch = new temporaire[2];
\r
1975 ch[0] = new temporaire();
\r
1976 ch[1] = new temporaire();
\r
1980 static class temporaire2 {
\r
1981 public int[] l; /* [cb] */
\r
1982 public int[][] s; /* [window][cb] */
\r
1985 * Dummy Constructor
\r
1987 public temporaire2() {
\r
1989 s = new int[3][13];
\r
1993 // class III_scalefac_t
\r
1995 // public temporaire2[] tab;
\r
1997 // * Dummy Constructor
\r
1999 // public III_scalefac_t()
\r
2001 // tab = new temporaire2[2];
\r
2005 private static final int slen[][] = { { 0, 0, 0, 0, 3, 1, 1, 1, 2, 2, 2, 3, 3, 3, 4, 4 },
\r
2006 { 0, 1, 2, 3, 0, 1, 2, 3, 1, 2, 3, 1, 2, 3, 2, 3 } };
\r
2008 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,
\r
2011 private SBI[] sfBandIndex; // Init in the constructor.
\r
2013 public static final float two_to_negative_half_pow[] = { 1.0000000000E+00f, 7.0710678119E-01f,
\r
2014 5.0000000000E-01f, 3.5355339059E-01f, 2.5000000000E-01f, 1.7677669530E-01f,
\r
2015 1.2500000000E-01f, 8.8388347648E-02f, 6.2500000000E-02f, 4.4194173824E-02f,
\r
2016 3.1250000000E-02f, 2.2097086912E-02f, 1.5625000000E-02f, 1.1048543456E-02f,
\r
2017 7.8125000000E-03f, 5.5242717280E-03f, 3.9062500000E-03f, 2.7621358640E-03f,
\r
2018 1.9531250000E-03f, 1.3810679320E-03f, 9.7656250000E-04f, 6.9053396600E-04f,
\r
2019 4.8828125000E-04f, 3.4526698300E-04f, 2.4414062500E-04f, 1.7263349150E-04f,
\r
2020 1.2207031250E-04f, 8.6316745750E-05f, 6.1035156250E-05f, 4.3158372875E-05f,
\r
2021 3.0517578125E-05f, 2.1579186438E-05f, 1.5258789062E-05f, 1.0789593219E-05f,
\r
2022 7.6293945312E-06f, 5.3947966094E-06f, 3.8146972656E-06f, 2.6973983047E-06f,
\r
2023 1.9073486328E-06f, 1.3486991523E-06f, 9.5367431641E-07f, 6.7434957617E-07f,
\r
2024 4.7683715820E-07f, 3.3717478809E-07f, 2.3841857910E-07f, 1.6858739404E-07f,
\r
2025 1.1920928955E-07f, 8.4293697022E-08f, 5.9604644775E-08f, 4.2146848511E-08f,
\r
2026 2.9802322388E-08f, 2.1073424255E-08f, 1.4901161194E-08f, 1.0536712128E-08f,
\r
2027 7.4505805969E-09f, 5.2683560639E-09f, 3.7252902985E-09f, 2.6341780319E-09f,
\r
2028 1.8626451492E-09f, 1.3170890160E-09f, 9.3132257462E-10f, 6.5854450798E-10f,
\r
2029 4.6566128731E-10f, 3.2927225399E-10f };
\r
2031 public static final float t_43[] = create_t_43();
\r
2033 static private float[] create_t_43() {
\r
2034 float[] t43 = new float[8192];
\r
2035 final double d43 = (4.0 / 3.0);
\r
2037 for (int i = 0; i < 8192; i++) {
\r
2038 t43[i] = (float) Math.pow(i, d43);
\r
2043 public static final float io[][] = {
\r
2044 { 1.0000000000E+00f, 8.4089641526E-01f, 7.0710678119E-01f, 5.9460355751E-01f,
\r
2045 5.0000000001E-01f, 4.2044820763E-01f, 3.5355339060E-01f, 2.9730177876E-01f,
\r
2046 2.5000000001E-01f, 2.1022410382E-01f, 1.7677669530E-01f, 1.4865088938E-01f,
\r
2047 1.2500000000E-01f, 1.0511205191E-01f, 8.8388347652E-02f, 7.4325444691E-02f,
\r
2048 6.2500000003E-02f, 5.2556025956E-02f, 4.4194173826E-02f, 3.7162722346E-02f,
\r
2049 3.1250000002E-02f, 2.6278012978E-02f, 2.2097086913E-02f, 1.8581361173E-02f,
\r
2050 1.5625000001E-02f, 1.3139006489E-02f, 1.1048543457E-02f, 9.2906805866E-03f,
\r
2051 7.8125000006E-03f, 6.5695032447E-03f, 5.5242717285E-03f, 4.6453402934E-03f },
\r
2052 { 1.0000000000E+00f, 7.0710678119E-01f, 5.0000000000E-01f, 3.5355339060E-01f,
\r
2053 2.5000000000E-01f, 1.7677669530E-01f, 1.2500000000E-01f, 8.8388347650E-02f,
\r
2054 6.2500000001E-02f, 4.4194173825E-02f, 3.1250000001E-02f, 2.2097086913E-02f,
\r
2055 1.5625000000E-02f, 1.1048543456E-02f, 7.8125000002E-03f, 5.5242717282E-03f,
\r
2056 3.9062500001E-03f, 2.7621358641E-03f, 1.9531250001E-03f, 1.3810679321E-03f,
\r
2057 9.7656250004E-04f, 6.9053396603E-04f, 4.8828125002E-04f, 3.4526698302E-04f,
\r
2058 2.4414062501E-04f, 1.7263349151E-04f, 1.2207031251E-04f, 8.6316745755E-05f,
\r
2059 6.1035156254E-05f, 4.3158372878E-05f, 3.0517578127E-05f, 2.1579186439E-05f } };
\r
2061 public static final float TAN12[] = { 0.0f, 0.26794919f, 0.57735027f, 1.0f, 1.73205081f,
\r
2062 3.73205081f, 9.9999999e10f, -3.73205081f, -1.73205081f, -1.0f, -0.57735027f, -0.26794919f,
\r
2063 0.0f, 0.26794919f, 0.57735027f, 1.0f };
\r
2065 // REVIEW: in java, the array lookup may well be slower than
\r
2066 // the actual calculation
\r
2069 * private static final int ss_div[] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
\r
2070 * 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,
\r
2071 * 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,
\r
2072 * 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,
\r
2073 * 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,
\r
2074 * 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,
\r
2075 * 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,
\r
2076 * 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 10, 10, 10, 10, 10,
\r
2077 * 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 11, 11, 11, 11, 11, 11,
\r
2078 * 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 12, 12, 12, 12, 12, 12, 12,
\r
2079 * 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 13, 13, 13, 13, 13, 13, 13, 13,
\r
2080 * 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 14, 14, 14, 14, 14, 14, 14, 14, 14,
\r
2081 * 14, 14, 14, 14, 14, 14, 14, 14, 14, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15,
\r
2082 * 15, 15, 15, 15, 15, 15, 15, 15, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16,
\r
2083 * 16, 16, 16, 16, 16, 16, 16, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17,
\r
2084 * 17, 17, 17, 17, 17, 17, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18,
\r
2085 * 18, 18, 18, 18, 18, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19,
\r
2086 * 19, 19, 19, 19, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20,
\r
2087 * 20, 20, 20, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
\r
2088 * 21, 21, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22,
\r
2089 * 22, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23,
\r
2090 * 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 25,
\r
2091 * 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 26, 26,
\r
2092 * 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 27, 27, 27,
\r
2093 * 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 28, 28, 28, 28,
\r
2094 * 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 29, 29, 29, 29, 29,
\r
2095 * 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 30, 30, 30, 30, 30, 30,
\r
2096 * 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 31, 31, 31, 31, 31, 31, 31,
\r
2097 * 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31 };
\r
2099 * // 576 % 18 private static final int ss_mod[] = { 0, 1, 2, 3, 4, 5, 6, 7,
\r
2100 * 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11,
\r
2101 * 12, 13, 14, 15, 16, 17, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14,
\r
2102 * 15, 16, 17, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17,
\r
2103 * 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 0, 1, 2, 3,
\r
2104 * 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 0, 1, 2, 3, 4, 5, 6, 7,
\r
2105 * 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11,
\r
2106 * 12, 13, 14, 15, 16, 17, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14,
\r
2107 * 15, 16, 17, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17,
\r
2108 * 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 0, 1, 2, 3,
\r
2109 * 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 0, 1, 2, 3, 4, 5, 6, 7,
\r
2110 * 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11,
\r
2111 * 12, 13, 14, 15, 16, 17, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14,
\r
2112 * 15, 16, 17, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17,
\r
2113 * 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 0, 1, 2, 3,
\r
2114 * 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 0, 1, 2, 3, 4, 5, 6, 7,
\r
2115 * 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11,
\r
2116 * 12, 13, 14, 15, 16, 17, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14,
\r
2117 * 15, 16, 17, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17,
\r
2118 * 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 0, 1, 2, 3,
\r
2119 * 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 0, 1, 2, 3, 4, 5, 6, 7,
\r
2120 * 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11,
\r
2121 * 12, 13, 14, 15, 16, 17, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14,
\r
2122 * 15, 16, 17, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17,
\r
2123 * 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 0, 1, 2, 3,
\r
2124 * 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 0, 1, 2, 3, 4, 5, 6, 7,
\r
2125 * 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11,
\r
2126 * 12, 13, 14, 15, 16, 17 };
\r
2128 private static/* final */int reorder_table[][]/* = loadReorderTable() */; // SZD:
\r
2136 * Loads the data for the reorder
\r
2139 * private static int[][] loadReorderTable() // SZD: table will be generated {
\r
2140 * try { Class elemType = int[][].class.getComponentType(); Object o =
\r
2141 * JavaLayerUtils.deserializeArrayResource("l3reorder.ser", elemType, 6);
\r
2142 * return (int[][])o; } catch (IOException ex) { throw new
\r
2143 * ExceptionInInitializerError(ex); } }
\r
2146 static int[] reorder(int scalefac_band[]) { // SZD: converted from LAME
\r
2148 int ix[] = new int[576];
\r
2149 for (int sfb = 0; sfb < 13; sfb++) {
\r
2150 int start = scalefac_band[sfb];
\r
2151 int end = scalefac_band[sfb + 1];
\r
2152 for (int window = 0; window < 3; window++)
\r
2153 for (int i = start; i < end; i++)
\r
2154 ix[3 * i + window] = j++;
\r
2160 * static final int reorder_table_data[][]; = { { 0, 4, 8, 1, 5, 9, 2, 6, 10,
\r
2161 * 3, 7, 11, 12, 16, 20, 13, 17, 21, 14, 18, 22, 15, 19, 23, 24, 28, 32, 25,
\r
2162 * 29, 33, 26, 30, 34, 27, 31, 35, 36, 42, 48, 37, 43, 49, 38, 44, 50, 39, 45,
\r
2163 * 51, 40, 46, 52, 41, 47, 53, 54, 60, 66, 55, 61, 67, 56, 62, 68, 57, 63, 69,
\r
2164 * 58, 64, 70, 59, 65, 71, 72, 80, 88, 73, 81, 89, 74, 82, 90, 75, 83, 91, 76,
\r
2165 * 84, 92, 77, 85, 93, 78, 86, 94, 79, 87, 95, 96,106,116, 97,107,117,
\r
2166 * 98,108,118, 99,109,119,100,110,120,101,
\r
2167 * 111,121,102,112,122,103,113,123,104,114,124,105,115,125,126,140,
\r
2168 * 154,127,141,155,128,142,156,129,143,157,130,144,158,131,145,159,
\r
2169 * 132,146,160,133,147,161,134,148,162,135,149,163,136,150,164,137,
\r
2170 * 151,165,138,152,166,139,153,167,168,186,204,169,187,205,170,188,
\r
2171 * 206,171,189,207,172,190,208,173,191,209,174,192,210,175,193,211,
\r
2172 * 176,194,212,177,195,213,178,196,214,179,197,215,180,198,216,181,
\r
2173 * 199,217,182,200,218,183,201,219,184,202,220,185,203,221,222,248,
\r
2174 * 274,223,249,275,224,250,276,225,251,277,226,252,278,227,253,279,
\r
2175 * 228,254,280,229,255,281,230,256,282,231,257,283,232,258,284,233,
\r
2176 * 259,285,234,260,286,235,261,287,236,262,288,237,263,289,238,264,
\r
2177 * 290,239,265,291,240,266,292,241,267,293,242,268,294,243,269,295,
\r
2178 * 244,270,296,245,271,297,246,272,298,247,273,299,300,332,364,301,
\r
2179 * 333,365,302,334,366,303,335,367,304,336,368,305,337,369,306,338,
\r
2180 * 370,307,339,371,308,340,372,309,341,373,310,342,374,311,343,375,
\r
2181 * 312,344,376,313,345,377,314,346,378,315,347,379,316,348,380,317,
\r
2182 * 349,381,318,350,382,319,351,383,320,352,384,321,353,385,322,354,
\r
2183 * 386,323,355,387,324,356,388,325,357,389,326,358,390,327,359,391,
\r
2184 * 328,360,392,329,361,393,330,362,394,331,363,395,396,438,480,397,
\r
2185 * 439,481,398,440,482,399,441,483,400,442,484,401,443,485,402,444,
\r
2186 * 486,403,445,487,404,446,488,405,447,489,406,448,490,407,449,491,
\r
2187 * 408,450,492,409,451,493,410,452,494,411,453,495,412,454,496,413,
\r
2188 * 455,497,414,456,498,415,457,499,416,458,500,417,459,501,418,460,
\r
2189 * 502,419,461,503,420,462,504,421,463,505,422,464,506,423,465,507,
\r
2190 * 424,466,508,425,467,509,426,468,510,427,469,511,428,470,512,429,
\r
2191 * 471,513,430,472,514,431,473,515,432,474,516,433,475,517,434,476,
\r
2192 * 518,435,477,519,436,478,520,437,479,521,522,540,558,523,541,559,
\r
2193 * 524,542,560,525,543,561,526,544,562,527,545,563,528,546,564,529,
\r
2194 * 547,565,530,548,566,531,549,567,532,550,568,533,551,569,534,552,
\r
2195 * 570,535,553,571,536,554,572,537,555,573,538,556,574,539,557,575}, { 0, 4,
\r
2196 * 8, 1, 5, 9, 2, 6, 10, 3, 7, 11, 12, 16, 20, 13, 17, 21, 14, 18, 22, 15, 19,
\r
2197 * 23, 24, 28, 32, 25, 29, 33, 26, 30, 34, 27, 31, 35, 36, 42, 48, 37, 43, 49,
\r
2198 * 38, 44, 50, 39, 45, 51, 40, 46, 52, 41, 47, 53, 54, 62, 70, 55, 63, 71, 56,
\r
2199 * 64, 72, 57, 65, 73, 58, 66, 74, 59, 67, 75, 60, 68, 76, 61, 69, 77, 78, 88,
\r
2200 * 98, 79, 89, 99, 80, 90,100, 81, 91,101, 82, 92,102, 83, 93,103, 84, 94,104,
\r
2201 * 85, 95,105, 86, 96,106, 87, 97,107,108,120,132,109,
\r
2202 * 121,133,110,122,134,111,123,135,112,124,136,113,125,137,114,126,
\r
2203 * 138,115,127,139,116,128,140,117,129,141,118,130,142,119,131,143,
\r
2204 * 144,158,172,145,159,173,146,160,174,147,161,175,148,162,176,149,
\r
2205 * 163,177,150,164,178,151,165,179,152,166,180,153,167,181,154,168,
\r
2206 * 182,155,169,183,156,170,184,157,171,185,186,204,222,187,205,223,
\r
2207 * 188,206,224,189,207,225,190,208,226,191,209,227,192,210,228,193,
\r
2208 * 211,229,194,212,230,195,213,231,196,214,232,197,215,233,198,216,
\r
2209 * 234,199,217,235,200,218,236,201,219,237,202,220,238,203,221,239,
\r
2210 * 240,264,288,241,265,289,242,266,290,243,267,291,244,268,292,245,
\r
2211 * 269,293,246,270,294,247,271,295,248,272,296,249,273,297,250,274,
\r
2212 * 298,251,275,299,252,276,300,253,277,301,254,278,302,255,279,303,
\r
2213 * 256,280,304,257,281,305,258,282,306,259,283,307,260,284,308,261,
\r
2214 * 285,309,262,286,310,263,287,311,312,344,376,313,345,377,314,346,
\r
2215 * 378,315,347,379,316,348,380,317,349,381,318,350,382,319,351,383,
\r
2216 * 320,352,384,321,353,385,322,354,386,323,355,387,324,356,388,325,
\r
2217 * 357,389,326,358,390,327,359,391,328,360,392,329,361,393,330,362,
\r
2218 * 394,331,363,395,332,364,396,333,365,397,334,366,398,335,367,399,
\r
2219 * 336,368,400,337,369,401,338,370,402,339,371,403,340,372,404,341,
\r
2220 * 373,405,342,374,406,343,375,407,408,452,496,409,453,497,410,454,
\r
2221 * 498,411,455,499,412,456,500,413,457,501,414,458,502,415,459,503,
\r
2222 * 416,460,504,417,461,505,418,462,506,419,463,507,420,464,508,421,
\r
2223 * 465,509,422,466,510,423,467,511,424,468,512,425,469,513,426,470,
\r
2224 * 514,427,471,515,428,472,516,429,473,517,430,474,518,431,475,519,
\r
2225 * 432,476,520,433,477,521,434,478,522,435,479,523,436,480,524,437,
\r
2226 * 481,525,438,482,526,439,483,527,440,484,528,441,485,529,442,486,
\r
2227 * 530,443,487,531,444,488,532,445,489,533,446,490,534,447,491,535,
\r
2228 * 448,492,536,449,493,537,450,494,538,451,495,539,540,552,564,541,
\r
2229 * 553,565,542,554,566,543,555,567,544,556,568,545,557,569,546,558,
\r
2230 * 570,547,559,571,548,560,572,549,561,573,550,562,574,551,563,575}, { 0, 4,
\r
2231 * 8, 1, 5, 9, 2, 6, 10, 3, 7, 11, 12, 16, 20, 13, 17, 21, 14, 18, 22, 15, 19,
\r
2232 * 23, 24, 28, 32, 25, 29, 33, 26, 30, 34, 27, 31, 35, 36, 42, 48, 37, 43, 49,
\r
2233 * 38, 44, 50, 39, 45, 51, 40, 46, 52, 41, 47, 53, 54, 62, 70, 55, 63, 71, 56,
\r
2234 * 64, 72, 57, 65, 73, 58, 66, 74, 59, 67, 75, 60, 68, 76, 61, 69, 77, 78, 88,
\r
2235 * 98, 79, 89, 99, 80, 90,100, 81, 91,101, 82, 92,102, 83, 93,103, 84, 94,104,
\r
2236 * 85, 95,105, 86, 96,106, 87, 97,107,108,120,132,109,
\r
2237 * 121,133,110,122,134,111,123,135,112,124,136,113,125,137,114,126,
\r
2238 * 138,115,127,139,116,128,140,117,129,141,118,130,142,119,131,143,
\r
2239 * 144,158,172,145,159,173,146,160,174,147,161,175,148,162,176,149,
\r
2240 * 163,177,150,164,178,151,165,179,152,166,180,153,167,181,154,168,
\r
2241 * 182,155,169,183,156,170,184,157,171,185,186,204,222,187,205,223,
\r
2242 * 188,206,224,189,207,225,190,208,226,191,209,227,192,210,228,193,
\r
2243 * 211,229,194,212,230,195,213,231,196,214,232,197,215,233,198,216,
\r
2244 * 234,199,217,235,200,218,236,201,219,237,202,220,238,203,221,239,
\r
2245 * 240,264,288,241,265,289,242,266,290,243,267,291,244,268,292,245,
\r
2246 * 269,293,246,270,294,247,271,295,248,272,296,249,273,297,250,274,
\r
2247 * 298,251,275,299,252,276,300,253,277,301,254,278,302,255,279,303,
\r
2248 * 256,280,304,257,281,305,258,282,306,259,283,307,260,284,308,261,
\r
2249 * 285,309,262,286,310,263,287,311,312,342,372,313,343,373,314,344,
\r
2250 * 374,315,345,375,316,346,376,317,347,377,318,348,378,319,349,379,
\r
2251 * 320,350,380,321,351,381,322,352,382,323,353,383,324,354,384,325,
\r
2252 * 355,385,326,356,386,327,357,387,328,358,388,329,359,389,330,360,
\r
2253 * 390,331,361,391,332,362,392,333,363,393,334,364,394,335,365,395,
\r
2254 * 336,366,396,337,367,397,338,368,398,339,369,399,340,370,400,341,
\r
2255 * 371,401,402,442,482,403,443,483,404,444,484,405,445,485,406,446,
\r
2256 * 486,407,447,487,408,448,488,409,449,489,410,450,490,411,451,491,
\r
2257 * 412,452,492,413,453,493,414,454,494,415,455,495,416,456,496,417,
\r
2258 * 457,497,418,458,498,419,459,499,420,460,500,421,461,501,422,462,
\r
2259 * 502,423,463,503,424,464,504,425,465,505,426,466,506,427,467,507,
\r
2260 * 428,468,508,429,469,509,430,470,510,431,471,511,432,472,512,433,
\r
2261 * 473,513,434,474,514,435,475,515,436,476,516,437,477,517,438,478,
\r
2262 * 518,439,479,519,440,480,520,441,481,521,522,540,558,523,541,559,
\r
2263 * 524,542,560,525,543,561,526,544,562,527,545,563,528,546,564,529,
\r
2264 * 547,565,530,548,566,531,549,567,532,550,568,533,551,569,534,552,
\r
2265 * 570,535,553,571,536,554,572,537,555,573,538,556,574,539,557,575}, { 0, 4,
\r
2266 * 8, 1, 5, 9, 2, 6, 10, 3, 7, 11, 12, 16, 20, 13, 17, 21, 14, 18, 22, 15, 19,
\r
2267 * 23, 24, 28, 32, 25, 29, 33, 26, 30, 34, 27, 31, 35, 36, 40, 44, 37, 41, 45,
\r
2268 * 38, 42, 46, 39, 43, 47, 48, 54, 60, 49, 55, 61, 50, 56, 62, 51, 57, 63, 52,
\r
2269 * 58, 64, 53, 59, 65, 66, 74, 82, 67, 75, 83, 68, 76, 84, 69, 77, 85, 70, 78,
\r
2270 * 86, 71, 79, 87, 72, 80, 88, 73, 81, 89, 90,100,110, 91,101,111, 92,102,112,
\r
2271 * 93,103,113, 94,104,114, 95,105,115, 96,106,116, 97, 107,117, 98,108,118,
\r
2272 * 99,109,119,120,132,144,121,133,145,122,134,
\r
2273 * 146,123,135,147,124,136,148,125,137,149,126,138,150,127,139,151,
\r
2274 * 128,140,152,129,141,153,130,142,154,131,143,155,156,170,184,157,
\r
2275 * 171,185,158,172,186,159,173,187,160,174,188,161,175,189,162,176,
\r
2276 * 190,163,177,191,164,178,192,165,179,193,166,180,194,167,181,195,
\r
2277 * 168,182,196,169,183,197,198,216,234,199,217,235,200,218,236,201,
\r
2278 * 219,237,202,220,238,203,221,239,204,222,240,205,223,241,206,224,
\r
2279 * 242,207,225,243,208,226,244,209,227,245,210,228,246,211,229,247,
\r
2280 * 212,230,248,213,231,249,214,232,250,215,233,251,252,274,296,253,
\r
2281 * 275,297,254,276,298,255,277,299,256,278,300,257,279,301,258,280,
\r
2282 * 302,259,281,303,260,282,304,261,283,305,262,284,306,263,285,307,
\r
2283 * 264,286,308,265,287,309,266,288,310,267,289,311,268,290,312,269,
\r
2284 * 291,313,270,292,314,271,293,315,272,294,316,273,295,317,318,348,
\r
2285 * 378,319,349,379,320,350,380,321,351,381,322,352,382,323,353,383,
\r
2286 * 324,354,384,325,355,385,326,356,386,327,357,387,328,358,388,329,
\r
2287 * 359,389,330,360,390,331,361,391,332,362,392,333,363,393,334,364,
\r
2288 * 394,335,365,395,336,366,396,337,367,397,338,368,398,339,369,399,
\r
2289 * 340,370,400,341,371,401,342,372,402,343,373,403,344,374,404,345,
\r
2290 * 375,405,346,376,406,347,377,407,408,464,520,409,465,521,410,466,
\r
2291 * 522,411,467,523,412,468,524,413,469,525,414,470,526,415,471,527,
\r
2292 * 416,472,528,417,473,529,418,474,530,419,475,531,420,476,532,421,
\r
2293 * 477,533,422,478,534,423,479,535,424,480,536,425,481,537,426,482,
\r
2294 * 538,427,483,539,428,484,540,429,485,541,430,486,542,431,487,543,
\r
2295 * 432,488,544,433,489,545,434,490,546,435,491,547,436,492,548,437,
\r
2296 * 493,549,438,494,550,439,495,551,440,496,552,441,497,553,442,498,
\r
2297 * 554,443,499,555,444,500,556,445,501,557,446,502,558,447,503,559,
\r
2298 * 448,504,560,449,505,561,450,506,562,451,507,563,452,508,564,453,
\r
2299 * 509,565,454,510,566,455,511,567,456,512,568,457,513,569,458,514,
\r
2300 * 570,459,515,571,460,516,572,461,517,573,462,518,574,463,519,575}, { 0, 4,
\r
2301 * 8, 1, 5, 9, 2, 6, 10, 3, 7, 11, 12, 16, 20, 13, 17, 21, 14, 18, 22, 15, 19,
\r
2302 * 23, 24, 28, 32, 25, 29, 33, 26, 30, 34, 27, 31, 35, 36, 40, 44, 37, 41, 45,
\r
2303 * 38, 42, 46, 39, 43, 47, 48, 54, 60, 49, 55, 61, 50, 56, 62, 51, 57, 63, 52,
\r
2304 * 58, 64, 53, 59, 65, 66, 72, 78, 67, 73, 79, 68, 74, 80, 69, 75, 81, 70, 76,
\r
2305 * 82, 71, 77, 83, 84, 94,104, 85, 95,105, 86, 96,106, 87, 97,107, 88, 98,108,
\r
2306 * 89, 99,109, 90,100,110, 91,101,111, 92,102,112, 93,
\r
2307 * 103,113,114,126,138,115,127,139,116,128,140,117,129,141,118,130,
\r
2308 * 142,119,131,143,120,132,144,121,133,145,122,134,146,123,135,147,
\r
2309 * 124,136,148,125,137,149,150,164,178,151,165,179,152,166,180,153,
\r
2310 * 167,181,154,168,182,155,169,183,156,170,184,157,171,185,158,172,
\r
2311 * 186,159,173,187,160,174,188,161,175,189,162,176,190,163,177,191,
\r
2312 * 192,208,224,193,209,225,194,210,226,195,211,227,196,212,228,197,
\r
2313 * 213,229,198,214,230,199,215,231,200,216,232,201,217,233,202,218,
\r
2314 * 234,203,219,235,204,220,236,205,221,237,206,222,238,207,223,239,
\r
2315 * 240,260,280,241,261,281,242,262,282,243,263,283,244,264,284,245,
\r
2316 * 265,285,246,266,286,247,267,287,248,268,288,249,269,289,250,270,
\r
2317 * 290,251,271,291,252,272,292,253,273,293,254,274,294,255,275,295,
\r
2318 * 256,276,296,257,277,297,258,278,298,259,279,299,300,326,352,301,
\r
2319 * 327,353,302,328,354,303,329,355,304,330,356,305,331,357,306,332,
\r
2320 * 358,307,333,359,308,334,360,309,335,361,310,336,362,311,337,363,
\r
2321 * 312,338,364,313,339,365,314,340,366,315,341,367,316,342,368,317,
\r
2322 * 343,369,318,344,370,319,345,371,320,346,372,321,347,373,322,348,
\r
2323 * 374,323,349,375,324,350,376,325,351,377,378,444,510,379,445,511,
\r
2324 * 380,446,512,381,447,513,382,448,514,383,449,515,384,450,516,385,
\r
2325 * 451,517,386,452,518,387,453,519,388,454,520,389,455,521,390,456,
\r
2326 * 522,391,457,523,392,458,524,393,459,525,394,460,526,395,461,527,
\r
2327 * 396,462,528,397,463,529,398,464,530,399,465,531,400,466,532,401,
\r
2328 * 467,533,402,468,534,403,469,535,404,470,536,405,471,537,406,472,
\r
2329 * 538,407,473,539,408,474,540,409,475,541,410,476,542,411,477,543,
\r
2330 * 412,478,544,413,479,545,414,480,546,415,481,547,416,482,548,417,
\r
2331 * 483,549,418,484,550,419,485,551,420,486,552,421,487,553,422,488,
\r
2332 * 554,423,489,555,424,490,556,425,491,557,426,492,558,427,493,559,
\r
2333 * 428,494,560,429,495,561,430,496,562,431,497,563,432,498,564,433,
\r
2334 * 499,565,434,500,566,435,501,567,436,502,568,437,503,569,438,504,
\r
2335 * 570,439,505,571,440,506,572,441,507,573,442,508,574,443,509,575}, { 0, 4,
\r
2336 * 8, 1, 5, 9, 2, 6, 10, 3, 7, 11, 12, 16, 20, 13, 17, 21, 14, 18, 22, 15, 19,
\r
2337 * 23, 24, 28, 32, 25, 29, 33, 26, 30, 34, 27, 31, 35, 36, 40, 44, 37, 41, 45,
\r
2338 * 38, 42, 46, 39, 43, 47, 48, 54, 60, 49, 55, 61, 50, 56, 62, 51, 57, 63, 52,
\r
2339 * 58, 64, 53, 59, 65, 66, 74, 82, 67, 75, 83, 68, 76, 84, 69, 77, 85, 70, 78,
\r
2340 * 86, 71, 79, 87, 72, 80, 88, 73, 81, 89, 90,102,114, 91,103,115, 92,104,116,
\r
2341 * 93,105,117, 94,106,118, 95,107,119, 96,108,120, 97, 109,121, 98,110,122,
\r
2342 * 99,111,123,100,112,124,101,113,125,126,142,
\r
2343 * 158,127,143,159,128,144,160,129,145,161,130,146,162,131,147,163,
\r
2344 * 132,148,164,133,149,165,134,150,166,135,151,167,136,152,168,137,
\r
2345 * 153,169,138,154,170,139,155,171,140,156,172,141,157,173,174,194,
\r
2346 * 214,175,195,215,176,196,216,177,197,217,178,198,218,179,199,219,
\r
2347 * 180,200,220,181,201,221,182,202,222,183,203,223,184,204,224,185,
\r
2348 * 205,225,186,206,226,187,207,227,188,208,228,189,209,229,190,210,
\r
2349 * 230,191,211,231,192,212,232,193,213,233,234,260,286,235,261,287,
\r
2350 * 236,262,288,237,263,289,238,264,290,239,265,291,240,266,292,241,
\r
2351 * 267,293,242,268,294,243,269,295,244,270,296,245,271,297,246,272,
\r
2352 * 298,247,273,299,248,274,300,249,275,301,250,276,302,251,277,303,
\r
2353 * 252,278,304,253,279,305,254,280,306,255,281,307,256,282,308,257,
\r
2354 * 283,309,258,284,310,259,285,311,312,346,380,313,347,381,314,348,
\r
2355 * 382,315,349,383,316,350,384,317,351,385,318,352,386,319,353,387,
\r
2356 * 320,354,388,321,355,389,322,356,390,323,357,391,324,358,392,325,
\r
2357 * 359,393,326,360,394,327,361,395,328,362,396,329,363,397,330,364,
\r
2358 * 398,331,365,399,332,366,400,333,367,401,334,368,402,335,369,403,
\r
2359 * 336,370,404,337,371,405,338,372,406,339,373,407,340,374,408,341,
\r
2360 * 375,409,342,376,410,343,377,411,344,378,412,345,379,413,414,456,
\r
2361 * 498,415,457,499,416,458,500,417,459,501,418,460,502,419,461,503,
\r
2362 * 420,462,504,421,463,505,422,464,506,423,465,507,424,466,508,425,
\r
2363 * 467,509,426,468,510,427,469,511,428,470,512,429,471,513,430,472,
\r
2364 * 514,431,473,515,432,474,516,433,475,517,434,476,518,435,477,519,
\r
2365 * 436,478,520,437,479,521,438,480,522,439,481,523,440,482,524,441,
\r
2366 * 483,525,442,484,526,443,485,527,444,486,528,445,487,529,446,488,
\r
2367 * 530,447,489,531,448,490,532,449,491,533,450,492,534,451,493,535,
\r
2368 * 452,494,536,453,495,537,454,496,538,455,497,539,540,552,564,541,
\r
2369 * 553,565,542,554,566,543,555,567,544,556,568,545,557,569,546,558,
\r
2370 * 570,547,559,571,548,560,572,549,561,573,550,562,574,551,563,575} };
\r
2373 private static final float cs[] = { 0.857492925712f, 0.881741997318f, 0.949628649103f,
\r
2374 0.983314592492f, 0.995517816065f, 0.999160558175f, 0.999899195243f, 0.999993155067f };
\r
2376 private static final float ca[] = { -0.5144957554270f, -0.4717319685650f, -0.3133774542040f,
\r
2377 -0.1819131996110f, -0.0945741925262f, -0.0409655828852f, -0.0141985685725f,
\r
2378 -0.00369997467375f };
\r
2380 /************************************************************/
\r
2381 /* END OF L3TABLE */
\r
2382 /************************************************************/
\r
2384 /************************************************************/
\r
2386 /************************************************************/
\r
2388 /***************************************************************/
\r
2389 /* END OF L3TYPE */
\r
2390 /***************************************************************/
\r
2392 /***************************************************************/
\r
2394 /***************************************************************/
\r
2395 public static final float win[][] = {
\r
2396 { -1.6141214951E-02f, -5.3603178919E-02f, -1.0070713296E-01f, -1.6280817573E-01f,
\r
2397 -4.9999999679E-01f, -3.8388735032E-01f, -6.2061144372E-01f, -1.1659756083E+00f,
\r
2398 -3.8720752656E+00f, -4.2256286556E+00f, -1.5195289984E+00f, -9.7416483388E-01f,
\r
2399 -7.3744074053E-01f, -1.2071067773E+00f, -5.1636156596E-01f, -4.5426052317E-01f,
\r
2400 -4.0715656898E-01f, -3.6969460527E-01f, -3.3876269197E-01f, -3.1242222492E-01f,
\r
2401 -2.8939587111E-01f, -2.6880081906E-01f, -5.0000000266E-01f, -2.3251417468E-01f,
\r
2402 -2.1596714708E-01f, -2.0004979098E-01f, -1.8449493497E-01f, -1.6905846094E-01f,
\r
2403 -1.5350360518E-01f, -1.3758624925E-01f, -1.2103922149E-01f, -2.0710679058E-01f,
\r
2404 -8.4752577594E-02f, -6.4157525656E-02f, -4.1131172614E-02f, -1.4790705759E-02f },
\r
2406 { -1.6141214951E-02f, -5.3603178919E-02f, -1.0070713296E-01f, -1.6280817573E-01f,
\r
2407 -4.9999999679E-01f, -3.8388735032E-01f, -6.2061144372E-01f, -1.1659756083E+00f,
\r
2408 -3.8720752656E+00f, -4.2256286556E+00f, -1.5195289984E+00f, -9.7416483388E-01f,
\r
2409 -7.3744074053E-01f, -1.2071067773E+00f, -5.1636156596E-01f, -4.5426052317E-01f,
\r
2410 -4.0715656898E-01f, -3.6969460527E-01f, -3.3908542600E-01f, -3.1511810350E-01f,
\r
2411 -2.9642226150E-01f, -2.8184548650E-01f, -5.4119610000E-01f, -2.6213228100E-01f,
\r
2412 -2.5387916537E-01f, -2.3296291359E-01f, -1.9852728987E-01f, -1.5233534808E-01f,
\r
2413 -9.6496400054E-02f, -3.3423828516E-02f, 0.0000000000E+00f, 0.0000000000E+00f,
\r
2414 0.0000000000E+00f, 0.0000000000E+00f, 0.0000000000E+00f, 0.0000000000E+00f },
\r
2416 { -4.8300800645E-02f, -1.5715656932E-01f, -2.8325045177E-01f, -4.2953747763E-01f,
\r
2417 -1.2071067795E+00f, -8.2426483178E-01f, -1.1451749106E+00f, -1.7695290101E+00f,
\r
2418 -4.5470225061E+00f, -3.4890531002E+00f, -7.3296292804E-01f, -1.5076514758E-01f,
\r
2419 0.0000000000E+00f, 0.0000000000E+00f, 0.0000000000E+00f, 0.0000000000E+00f,
\r
2420 0.0000000000E+00f, 0.0000000000E+00f, 0.0000000000E+00f, 0.0000000000E+00f,
\r
2421 0.0000000000E+00f, 0.0000000000E+00f, 0.0000000000E+00f, 0.0000000000E+00f,
\r
2422 0.0000000000E+00f, 0.0000000000E+00f, 0.0000000000E+00f, 0.0000000000E+00f,
\r
2423 0.0000000000E+00f, 0.0000000000E+00f, 0.0000000000E+00f, 0.0000000000E+00f,
\r
2424 0.0000000000E+00f, 0.0000000000E+00f, 0.0000000000E+00f, 0.0000000000E+00f },
\r
2426 { 0.0000000000E+00f, 0.0000000000E+00f, 0.0000000000E+00f, 0.0000000000E+00f,
\r
2427 0.0000000000E+00f, 0.0000000000E+00f, -1.5076513660E-01f, -7.3296291107E-01f,
\r
2428 -3.4890530566E+00f, -4.5470224727E+00f, -1.7695290031E+00f, -1.1451749092E+00f,
\r
2429 -8.3137738100E-01f, -1.3065629650E+00f, -5.4142014250E-01f, -4.6528974900E-01f,
\r
2430 -4.1066990750E-01f, -3.7004680800E-01f, -3.3876269197E-01f, -3.1242222492E-01f,
\r
2431 -2.8939587111E-01f, -2.6880081906E-01f, -5.0000000266E-01f, -2.3251417468E-01f,
\r
2432 -2.1596714708E-01f, -2.0004979098E-01f, -1.8449493497E-01f, -1.6905846094E-01f,
\r
2433 -1.5350360518E-01f, -1.3758624925E-01f, -1.2103922149E-01f, -2.0710679058E-01f,
\r
2434 -8.4752577594E-02f, -6.4157525656E-02f, -4.1131172614E-02f, -1.4790705759E-02f } };
\r
2436 /***************************************************************/
\r
2437 /* END OF INV_MDCT */
\r
2438 /***************************************************************/
\r
2444 public Sftable() {
\r
2449 public Sftable(int[] thel, int[] thes) {
\r
2455 public Sftable sftable;
\r
2457 public static final int nr_of_sfb_block[][][] = {
\r
2458 { { 6, 5, 5, 5 }, { 9, 9, 9, 9 }, { 6, 9, 9, 9 } },
\r
2459 { { 6, 5, 7, 3 }, { 9, 9, 12, 6 }, { 6, 9, 12, 6 } },
\r
2460 { { 11, 10, 0, 0 }, { 18, 18, 0, 0 }, { 15, 18, 0, 0 } },
\r
2461 { { 7, 7, 7, 0 }, { 12, 12, 12, 0 }, { 6, 15, 12, 0 } },
\r
2462 { { 6, 6, 6, 3 }, { 12, 9, 9, 6 }, { 6, 12, 9, 6 } },
\r
2463 { { 8, 8, 5, 0 }, { 15, 12, 9, 0 }, { 6, 18, 9, 0 } } };
\r