Tristan Matthews | 0a329cc | 2013-07-17 13:20:14 -0400 | [diff] [blame] | 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 | |