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 366 367
