Tristan Matthews | 0a329cc | 2013-07-17 13:20:14 -0400 | [diff] [blame] | 1 | /* Copyright (C) 2002-2007 Jean-Marc Valin |
| 2 | File: modes.c |
| 3 | |
| 4 | Describes the wideband 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 | #include "os_support.h" |
| 49 | |
| 50 | |
| 51 | #ifndef NULL |
| 52 | #define NULL 0 |
| 53 | #endif |
| 54 | |
| 55 | EXPORT const SpeexMode * const speex_mode_list[SPEEX_NB_MODES] = {&speex_nb_mode, &speex_wb_mode, &speex_uwb_mode}; |
| 56 | |
| 57 | extern const signed char hexc_table[]; |
| 58 | extern const signed char hexc_10_32_table[]; |
| 59 | |
| 60 | #ifndef DISABLE_WIDEBAND |
| 61 | |
| 62 | /* Split-VQ innovation for high-band wideband */ |
| 63 | static const split_cb_params split_cb_high = { |
| 64 | 8, /*subvect_size*/ |
| 65 | 5, /*nb_subvect*/ |
| 66 | hexc_table, /*shape_cb*/ |
| 67 | 7, /*shape_bits*/ |
| 68 | 1, |
| 69 | }; |
| 70 | |
| 71 | |
| 72 | /* Split-VQ innovation for high-band wideband */ |
| 73 | static const split_cb_params split_cb_high_lbr = { |
| 74 | 10, /*subvect_size*/ |
| 75 | 4, /*nb_subvect*/ |
| 76 | hexc_10_32_table, /*shape_cb*/ |
| 77 | 5, /*shape_bits*/ |
| 78 | 0, |
| 79 | }; |
| 80 | |
| 81 | #endif |
| 82 | |
| 83 | |
| 84 | static const SpeexSubmode wb_submode1 = { |
| 85 | 0, |
| 86 | 0, |
| 87 | 1, |
| 88 | 0, |
| 89 | /*LSP quantization*/ |
| 90 | lsp_quant_high, |
| 91 | lsp_unquant_high, |
| 92 | /*Pitch quantization*/ |
| 93 | NULL, |
| 94 | NULL, |
| 95 | NULL, |
| 96 | /*No innovation quantization*/ |
| 97 | NULL, |
| 98 | NULL, |
| 99 | NULL, |
| 100 | -1, |
| 101 | 36 |
| 102 | }; |
| 103 | |
| 104 | |
| 105 | static const SpeexSubmode wb_submode2 = { |
| 106 | 0, |
| 107 | 0, |
| 108 | 1, |
| 109 | 0, |
| 110 | /*LSP quantization*/ |
| 111 | lsp_quant_high, |
| 112 | lsp_unquant_high, |
| 113 | /*Pitch quantization*/ |
| 114 | NULL, |
| 115 | NULL, |
| 116 | NULL, |
| 117 | /*Innovation quantization*/ |
| 118 | split_cb_search_shape_sign, |
| 119 | split_cb_shape_sign_unquant, |
| 120 | #ifdef DISABLE_WIDEBAND |
| 121 | NULL, |
| 122 | #else |
| 123 | &split_cb_high_lbr, |
| 124 | #endif |
| 125 | -1, |
| 126 | 112 |
| 127 | }; |
| 128 | |
| 129 | |
| 130 | static const SpeexSubmode wb_submode3 = { |
| 131 | 0, |
| 132 | 0, |
| 133 | 1, |
| 134 | 0, |
| 135 | /*LSP quantization*/ |
| 136 | lsp_quant_high, |
| 137 | lsp_unquant_high, |
| 138 | /*Pitch quantization*/ |
| 139 | NULL, |
| 140 | NULL, |
| 141 | NULL, |
| 142 | /*Innovation quantization*/ |
| 143 | split_cb_search_shape_sign, |
| 144 | split_cb_shape_sign_unquant, |
| 145 | #ifdef DISABLE_WIDEBAND |
| 146 | NULL, |
| 147 | #else |
| 148 | &split_cb_high, |
| 149 | #endif |
| 150 | -1, |
| 151 | 192 |
| 152 | }; |
| 153 | |
| 154 | static const SpeexSubmode wb_submode4 = { |
| 155 | 0, |
| 156 | 0, |
| 157 | 1, |
| 158 | 1, |
| 159 | /*LSP quantization*/ |
| 160 | lsp_quant_high, |
| 161 | lsp_unquant_high, |
| 162 | /*Pitch quantization*/ |
| 163 | NULL, |
| 164 | NULL, |
| 165 | NULL, |
| 166 | /*Innovation quantization*/ |
| 167 | split_cb_search_shape_sign, |
| 168 | split_cb_shape_sign_unquant, |
| 169 | #ifdef DISABLE_WIDEBAND |
| 170 | NULL, |
| 171 | #else |
| 172 | &split_cb_high, |
| 173 | #endif |
| 174 | -1, |
| 175 | 352 |
| 176 | }; |
| 177 | |
| 178 | |
| 179 | /* Split-band wideband CELP mode*/ |
| 180 | static const SpeexSBMode sb_wb_mode = { |
| 181 | &speex_nb_mode, |
| 182 | 160, /*frameSize*/ |
| 183 | 40, /*subframeSize*/ |
| 184 | 8, /*lpcSize*/ |
| 185 | #ifdef FIXED_POINT |
| 186 | 29491, 19661, /* gamma1, gamma2 */ |
| 187 | #else |
| 188 | 0.9, 0.6, /* gamma1, gamma2 */ |
| 189 | #endif |
| 190 | QCONST16(.0002,15), /*lpc_floor*/ |
| 191 | QCONST16(0.9f,15), |
| 192 | {NULL, &wb_submode1, &wb_submode2, &wb_submode3, &wb_submode4, NULL, NULL, NULL}, |
| 193 | 3, |
| 194 | {1, 8, 2, 3, 4, 5, 5, 6, 6, 7, 7}, |
| 195 | {1, 1, 1, 1, 1, 1, 2, 2, 3, 3, 4}, |
| 196 | #ifndef DISABLE_VBR |
| 197 | vbr_hb_thresh, |
| 198 | #endif |
| 199 | 5 |
| 200 | }; |
| 201 | |
| 202 | |
| 203 | EXPORT const SpeexMode speex_wb_mode = { |
| 204 | &sb_wb_mode, |
| 205 | wb_mode_query, |
| 206 | "wideband (sub-band CELP)", |
| 207 | 1, |
| 208 | 4, |
| 209 | &sb_encoder_init, |
| 210 | &sb_encoder_destroy, |
| 211 | &sb_encode, |
| 212 | &sb_decoder_init, |
| 213 | &sb_decoder_destroy, |
| 214 | &sb_decode, |
| 215 | &sb_encoder_ctl, |
| 216 | &sb_decoder_ctl, |
| 217 | }; |
| 218 | |
| 219 | |
| 220 | |
| 221 | /* "Ultra-wideband" mode stuff */ |
| 222 | |
| 223 | |
| 224 | |
| 225 | /* Split-band "ultra-wideband" (32 kbps) CELP mode*/ |
| 226 | static const SpeexSBMode sb_uwb_mode = { |
| 227 | &speex_wb_mode, |
| 228 | 320, /*frameSize*/ |
| 229 | 80, /*subframeSize*/ |
| 230 | 8, /*lpcSize*/ |
| 231 | #ifdef FIXED_POINT |
| 232 | 29491, 19661, /* gamma1, gamma2 */ |
| 233 | #else |
| 234 | 0.9, 0.6, /* gamma1, gamma2 */ |
| 235 | #endif |
| 236 | QCONST16(.0002,15), /*lpc_floor*/ |
| 237 | QCONST16(0.7f,15), |
| 238 | {NULL, &wb_submode1, NULL, NULL, NULL, NULL, NULL, NULL}, |
| 239 | 1, |
| 240 | {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10}, |
| 241 | {0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1}, |
| 242 | #ifndef DISABLE_VBR |
| 243 | vbr_uhb_thresh, |
| 244 | #endif |
| 245 | 2 |
| 246 | }; |
| 247 | |
| 248 | int wb_mode_query(const void *mode, int request, void *ptr) |
| 249 | { |
| 250 | const SpeexSBMode *m = (const SpeexSBMode*)mode; |
| 251 | |
| 252 | switch (request) |
| 253 | { |
| 254 | case SPEEX_MODE_FRAME_SIZE: |
| 255 | *((int*)ptr)=2*m->frameSize; |
| 256 | break; |
| 257 | case SPEEX_SUBMODE_BITS_PER_FRAME: |
| 258 | if (*((int*)ptr)==0) |
| 259 | *((int*)ptr) = SB_SUBMODE_BITS+1; |
| 260 | else if (m->submodes[*((int*)ptr)]==NULL) |
| 261 | *((int*)ptr) = -1; |
| 262 | else |
| 263 | *((int*)ptr) = m->submodes[*((int*)ptr)]->bits_per_frame; |
| 264 | break; |
| 265 | default: |
| 266 | speex_warning_int("Unknown wb_mode_query request: ", request); |
| 267 | return -1; |
| 268 | } |
| 269 | return 0; |
| 270 | } |
| 271 | |
| 272 | |
| 273 | EXPORT const SpeexMode speex_uwb_mode = { |
| 274 | &sb_uwb_mode, |
| 275 | wb_mode_query, |
| 276 | "ultra-wideband (sub-band CELP)", |
| 277 | 2, |
| 278 | 4, |
| 279 | &sb_encoder_init, |
| 280 | &sb_encoder_destroy, |
| 281 | &sb_encode, |
| 282 | &sb_decoder_init, |
| 283 | &sb_decoder_destroy, |
| 284 | &sb_decode, |
| 285 | &sb_encoder_ctl, |
| 286 | &sb_decoder_ctl, |
| 287 | }; |
| 288 | |
| 289 | /* We have defined speex_lib_get_mode() as a macro in speex.h */ |
| 290 | #undef speex_lib_get_mode |
| 291 | |
| 292 | EXPORT const SpeexMode * speex_lib_get_mode (int mode) |
| 293 | { |
| 294 | if (mode < 0 || mode >= SPEEX_NB_MODES) return NULL; |
| 295 | |
| 296 | return speex_mode_list[mode]; |
| 297 | } |
| 298 | |
| 299 | |
| 300 | |