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| 1 /* Copyright (C) 2002-2006 Jean-Marc Valin |
| 2 File: modes.c |
| 3 |
| 4 Describes the different modes of the codec |
| 5 |
| 6 Redistribution and use in source and binary forms, with or without |
| 7 modification, are permitted provided that the following conditions |
| 8 are met: |
| 9 |
| 10 - Redistributions of source code must retain the above copyright |
| 11 notice, this list of conditions and the following disclaimer. |
| 12 |
| 13 - Redistributions in binary form must reproduce the above copyright |
| 14 notice, this list of conditions and the following disclaimer in the |
| 15 documentation and/or other materials provided with the distribution. |
| 16 |
| 17 - Neither the name of the Xiph.org Foundation nor the names of its |
| 18 contributors may be used to endorse or promote products derived from |
| 19 this software without specific prior written permission. |
| 20 |
| 21 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 22 ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 23 LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| 24 A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR |
| 25 CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| 26 EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| 27 PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
| 28 PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF |
| 29 LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING |
| 30 NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
| 31 SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 32 |
| 33 */ |
| 34 |
| 35 #ifdef HAVE_CONFIG_H |
| 36 #include "config.h" |
| 37 #endif |
| 38 |
| 39 #include "modes.h" |
| 40 #include "ltp.h" |
| 41 #include "quant_lsp.h" |
| 42 #include "cb_search.h" |
| 43 #include "sb_celp.h" |
| 44 #include "nb_celp.h" |
| 45 #include "vbr.h" |
| 46 #include "arch.h" |
| 47 #include <math.h> |
| 48 |
| 49 #ifndef NULL |
| 50 #define NULL 0 |
| 51 #endif |
| 52 |
| 53 |
| 54 /* Extern declarations for all codebooks we use here */ |
| 55 extern const signed char gain_cdbk_nb[]; |
| 56 extern const signed char gain_cdbk_lbr[]; |
| 57 extern const signed char exc_5_256_table[]; |
| 58 extern const signed char exc_5_64_table[]; |
| 59 extern const signed char exc_8_128_table[]; |
| 60 extern const signed char exc_10_32_table[]; |
| 61 extern const signed char exc_10_16_table[]; |
| 62 extern const signed char exc_20_32_table[]; |
| 63 |
| 64 |
| 65 /* Parameters for Long-Term Prediction (LTP)*/ |
| 66 static const ltp_params ltp_params_nb = { |
| 67 gain_cdbk_nb, |
| 68 7, |
| 69 7 |
| 70 }; |
| 71 |
| 72 /* Parameters for Long-Term Prediction (LTP)*/ |
| 73 static const ltp_params ltp_params_vlbr = { |
| 74 gain_cdbk_lbr, |
| 75 5, |
| 76 0 |
| 77 }; |
| 78 |
| 79 /* Parameters for Long-Term Prediction (LTP)*/ |
| 80 static const ltp_params ltp_params_lbr = { |
| 81 gain_cdbk_lbr, |
| 82 5, |
| 83 7 |
| 84 }; |
| 85 |
| 86 /* Parameters for Long-Term Prediction (LTP)*/ |
| 87 static const ltp_params ltp_params_med = { |
| 88 gain_cdbk_lbr, |
| 89 5, |
| 90 7 |
| 91 }; |
| 92 |
| 93 /* Split-VQ innovation parameters for very low bit-rate narrowband */ |
| 94 static const split_cb_params split_cb_nb_vlbr = { |
| 95 10, /*subvect_size*/ |
| 96 4, /*nb_subvect*/ |
| 97 exc_10_16_table, /*shape_cb*/ |
| 98 4, /*shape_bits*/ |
| 99 0, |
| 100 }; |
| 101 |
| 102 /* Split-VQ innovation parameters for very low bit-rate narrowband */ |
| 103 static const split_cb_params split_cb_nb_ulbr = { |
| 104 20, /*subvect_size*/ |
| 105 2, /*nb_subvect*/ |
| 106 exc_20_32_table, /*shape_cb*/ |
| 107 5, /*shape_bits*/ |
| 108 0, |
| 109 }; |
| 110 |
| 111 /* Split-VQ innovation parameters for low bit-rate narrowband */ |
| 112 static const split_cb_params split_cb_nb_lbr = { |
| 113 10, /*subvect_size*/ |
| 114 4, /*nb_subvect*/ |
| 115 exc_10_32_table, /*shape_cb*/ |
| 116 5, /*shape_bits*/ |
| 117 0, |
| 118 }; |
| 119 |
| 120 |
| 121 /* Split-VQ innovation parameters narrowband */ |
| 122 static const split_cb_params split_cb_nb = { |
| 123 5, /*subvect_size*/ |
| 124 8, /*nb_subvect*/ |
| 125 exc_5_64_table, /*shape_cb*/ |
| 126 6, /*shape_bits*/ |
| 127 0, |
| 128 }; |
| 129 |
| 130 /* Split-VQ innovation parameters narrowband */ |
| 131 static const split_cb_params split_cb_nb_med = { |
| 132 8, /*subvect_size*/ |
| 133 5, /*nb_subvect*/ |
| 134 exc_8_128_table, /*shape_cb*/ |
| 135 7, /*shape_bits*/ |
| 136 0, |
| 137 }; |
| 138 |
| 139 /* Split-VQ innovation for low-band wideband */ |
| 140 static const split_cb_params split_cb_sb = { |
| 141 5, /*subvect_size*/ |
| 142 8, /*nb_subvect*/ |
| 143 exc_5_256_table, /*shape_cb*/ |
| 144 8, /*shape_bits*/ |
| 145 0, |
| 146 }; |
| 147 |
| 148 |
| 149 |
| 150 /* 2150 bps "vocoder-like" mode for comfort noise */ |
| 151 static const SpeexSubmode nb_submode1 = { |
| 152 0, |
| 153 1, |
| 154 0, |
| 155 0, |
| 156 /* LSP quantization */ |
| 157 lsp_quant_lbr, |
| 158 lsp_unquant_lbr, |
| 159 /* No pitch quantization */ |
| 160 forced_pitch_quant, |
| 161 forced_pitch_unquant, |
| 162 NULL, |
| 163 /* No innovation quantization (noise only) */ |
| 164 noise_codebook_quant, |
| 165 noise_codebook_unquant, |
| 166 NULL, |
| 167 -1, |
| 168 43 |
| 169 }; |
| 170 |
| 171 /* 3.95 kbps very low bit-rate mode */ |
| 172 static const SpeexSubmode nb_submode8 = { |
| 173 0, |
| 174 1, |
| 175 0, |
| 176 0, |
| 177 /*LSP quantization*/ |
| 178 lsp_quant_lbr, |
| 179 lsp_unquant_lbr, |
| 180 /*No pitch quantization*/ |
| 181 forced_pitch_quant, |
| 182 forced_pitch_unquant, |
| 183 NULL, |
| 184 /*Innovation quantization*/ |
| 185 split_cb_search_shape_sign, |
| 186 split_cb_shape_sign_unquant, |
| 187 &split_cb_nb_ulbr, |
| 188 QCONST16(.5,15), |
| 189 79 |
| 190 }; |
| 191 |
| 192 /* 5.95 kbps very low bit-rate mode */ |
| 193 static const SpeexSubmode nb_submode2 = { |
| 194 0, |
| 195 0, |
| 196 0, |
| 197 0, |
| 198 /*LSP quantization*/ |
| 199 lsp_quant_lbr, |
| 200 lsp_unquant_lbr, |
| 201 /*No pitch quantization*/ |
| 202 pitch_search_3tap, |
| 203 pitch_unquant_3tap, |
| 204 <p_params_vlbr, |
| 205 /*Innovation quantization*/ |
| 206 split_cb_search_shape_sign, |
| 207 split_cb_shape_sign_unquant, |
| 208 &split_cb_nb_vlbr, |
| 209 QCONST16(.6,15), |
| 210 119 |
| 211 }; |
| 212 |
| 213 /* 8 kbps low bit-rate mode */ |
| 214 static const SpeexSubmode nb_submode3 = { |
| 215 -1, |
| 216 0, |
| 217 1, |
| 218 0, |
| 219 /*LSP quantization*/ |
| 220 lsp_quant_lbr, |
| 221 lsp_unquant_lbr, |
| 222 /*Pitch quantization*/ |
| 223 pitch_search_3tap, |
| 224 pitch_unquant_3tap, |
| 225 <p_params_lbr, |
| 226 /*Innovation quantization*/ |
| 227 split_cb_search_shape_sign, |
| 228 split_cb_shape_sign_unquant, |
| 229 &split_cb_nb_lbr, |
| 230 QCONST16(.55,15), |
| 231 160 |
| 232 }; |
| 233 |
| 234 /* 11 kbps medium bit-rate mode */ |
| 235 static const SpeexSubmode nb_submode4 = { |
| 236 -1, |
| 237 0, |
| 238 1, |
| 239 0, |
| 240 /*LSP quantization*/ |
| 241 lsp_quant_lbr, |
| 242 lsp_unquant_lbr, |
| 243 /*Pitch quantization*/ |
| 244 pitch_search_3tap, |
| 245 pitch_unquant_3tap, |
| 246 <p_params_med, |
| 247 /*Innovation quantization*/ |
| 248 split_cb_search_shape_sign, |
| 249 split_cb_shape_sign_unquant, |
| 250 &split_cb_nb_med, |
| 251 QCONST16(.45,15), |
| 252 220 |
| 253 }; |
| 254 |
| 255 /* 15 kbps high bit-rate mode */ |
| 256 static const SpeexSubmode nb_submode5 = { |
| 257 -1, |
| 258 0, |
| 259 3, |
| 260 0, |
| 261 /*LSP quantization*/ |
| 262 lsp_quant_nb, |
| 263 lsp_unquant_nb, |
| 264 /*Pitch quantization*/ |
| 265 pitch_search_3tap, |
| 266 pitch_unquant_3tap, |
| 267 <p_params_nb, |
| 268 /*Innovation quantization*/ |
| 269 split_cb_search_shape_sign, |
| 270 split_cb_shape_sign_unquant, |
| 271 &split_cb_nb, |
| 272 QCONST16(.3,15), |
| 273 300 |
| 274 }; |
| 275 |
| 276 /* 18.2 high bit-rate mode */ |
| 277 static const SpeexSubmode nb_submode6 = { |
| 278 -1, |
| 279 0, |
| 280 3, |
| 281 0, |
| 282 /*LSP quantization*/ |
| 283 lsp_quant_nb, |
| 284 lsp_unquant_nb, |
| 285 /*Pitch quantization*/ |
| 286 pitch_search_3tap, |
| 287 pitch_unquant_3tap, |
| 288 <p_params_nb, |
| 289 /*Innovation quantization*/ |
| 290 split_cb_search_shape_sign, |
| 291 split_cb_shape_sign_unquant, |
| 292 &split_cb_sb, |
| 293 QCONST16(.2,15), |
| 294 364 |
| 295 }; |
| 296 |
| 297 /* 24.6 kbps high bit-rate mode */ |
| 298 static const SpeexSubmode nb_submode7 = { |
| 299 -1, |
| 300 0, |
| 301 3, |
| 302 1, |
| 303 /*LSP quantization*/ |
| 304 lsp_quant_nb, |
| 305 lsp_unquant_nb, |
| 306 /*Pitch quantization*/ |
| 307 pitch_search_3tap, |
| 308 pitch_unquant_3tap, |
| 309 <p_params_nb, |
| 310 /*Innovation quantization*/ |
| 311 split_cb_search_shape_sign, |
| 312 split_cb_shape_sign_unquant, |
| 313 &split_cb_nb, |
| 314 QCONST16(.1,15), |
| 315 492 |
| 316 }; |
| 317 |
| 318 |
| 319 /* Default mode for narrowband */ |
| 320 static const SpeexNBMode nb_mode = { |
| 321 160, /*frameSize*/ |
| 322 40, /*subframeSize*/ |
| 323 10, /*lpcSize*/ |
| 324 17, /*pitchStart*/ |
| 325 144, /*pitchEnd*/ |
| 326 #ifdef FIXED_POINT |
| 327 29491, 19661, /* gamma1, gamma2 */ |
| 328 #else |
| 329 0.9, 0.6, /* gamma1, gamma2 */ |
| 330 #endif |
| 331 QCONST16(.0002,15), /*lpc_floor*/ |
| 332 {NULL, &nb_submode1, &nb_submode2, &nb_submode3, &nb_submode4, &nb_submode5,
&nb_submode6, &nb_submode7, |
| 333 &nb_submode8, NULL, NULL, NULL, NULL, NULL, NULL, NULL}, |
| 334 5, |
| 335 {1, 8, 2, 3, 3, 4, 4, 5, 5, 6, 7} |
| 336 }; |
| 337 |
| 338 |
| 339 /* Default mode for narrowband */ |
| 340 EXPORT const SpeexMode speex_nb_mode = { |
| 341 &nb_mode, |
| 342 nb_mode_query, |
| 343 "narrowband", |
| 344 0, |
| 345 4, |
| 346 &nb_encoder_init, |
| 347 &nb_encoder_destroy, |
| 348 &nb_encode, |
| 349 &nb_decoder_init, |
| 350 &nb_decoder_destroy, |
| 351 &nb_decode, |
| 352 &nb_encoder_ctl, |
| 353 &nb_decoder_ctl, |
| 354 }; |
| 355 |
| 356 |
| 357 |
| 358 EXPORT int speex_mode_query(const SpeexMode *mode, int request, void *ptr) |
| 359 { |
| 360 return mode->query(mode->mode, request, ptr); |
| 361 } |
| 362 |
| 363 #ifdef FIXED_DEBUG |
| 364 long long spx_mips=0; |
| 365 #endif |
| 366 |
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