Alexandre Lision | 8af73cb | 2013-12-10 14:11:20 -0500 | [diff] [blame] | 1 | /* Copyright (C) 2002-2006 Jean-Marc Valin |
| 2 | File: sb_celp.c |
| 3 | |
| 4 | Redistribution and use in source and binary forms, with or without |
| 5 | modification, are permitted provided that the following conditions |
| 6 | are met: |
| 7 | |
| 8 | - Redistributions of source code must retain the above copyright |
| 9 | notice, this list of conditions and the following disclaimer. |
| 10 | |
| 11 | - Redistributions in binary form must reproduce the above copyright |
| 12 | notice, this list of conditions and the following disclaimer in the |
| 13 | documentation and/or other materials provided with the distribution. |
| 14 | |
| 15 | - Neither the name of the Xiph.org Foundation nor the names of its |
| 16 | contributors may be used to endorse or promote products derived from |
| 17 | this software without specific prior written permission. |
| 18 | |
| 19 | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 20 | ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 21 | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| 22 | A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR |
| 23 | CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| 24 | EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| 25 | PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
| 26 | PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF |
| 27 | LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING |
| 28 | NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
| 29 | SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 30 | */ |
| 31 | |
| 32 | #ifdef HAVE_CONFIG_H |
| 33 | #include "config.h" |
| 34 | #endif |
| 35 | |
| 36 | #include <math.h> |
| 37 | #include "sb_celp.h" |
| 38 | #include "filters.h" |
| 39 | #include "lpc.h" |
| 40 | #include "lsp.h" |
| 41 | #include "stack_alloc.h" |
| 42 | #include "cb_search.h" |
| 43 | #include "quant_lsp.h" |
| 44 | #include "vq.h" |
| 45 | #include "ltp.h" |
| 46 | #include "arch.h" |
| 47 | #include "math_approx.h" |
| 48 | #include "os_support.h" |
| 49 | |
| 50 | #ifndef NULL |
| 51 | #define NULL 0 |
| 52 | #endif |
| 53 | |
| 54 | /* Default size for the encoder and decoder stack (can be changed at compile time). |
| 55 | This does not apply when using variable-size arrays or alloca. */ |
| 56 | #ifndef SB_ENC_STACK |
| 57 | #define SB_ENC_STACK (10000*sizeof(spx_sig_t)) |
| 58 | #endif |
| 59 | |
| 60 | #ifndef SB_DEC_STACK |
| 61 | #define SB_DEC_STACK (6000*sizeof(spx_sig_t)) |
| 62 | #endif |
| 63 | |
| 64 | |
| 65 | #ifdef DISABLE_WIDEBAND |
| 66 | void *sb_encoder_init(const SpeexMode *m) |
| 67 | { |
| 68 | speex_fatal("Wideband and Ultra-wideband are disabled"); |
| 69 | return NULL; |
| 70 | } |
| 71 | void sb_encoder_destroy(void *state) |
| 72 | { |
| 73 | speex_fatal("Wideband and Ultra-wideband are disabled"); |
| 74 | } |
| 75 | int sb_encode(void *state, void *vin, SpeexBits *bits) |
| 76 | { |
| 77 | speex_fatal("Wideband and Ultra-wideband are disabled"); |
| 78 | return -2; |
| 79 | } |
| 80 | void *sb_decoder_init(const SpeexMode *m) |
| 81 | { |
| 82 | speex_fatal("Wideband and Ultra-wideband are disabled"); |
| 83 | return NULL; |
| 84 | } |
| 85 | void sb_decoder_destroy(void *state) |
| 86 | { |
| 87 | speex_fatal("Wideband and Ultra-wideband are disabled"); |
| 88 | } |
| 89 | int sb_decode(void *state, SpeexBits *bits, void *vout) |
| 90 | { |
| 91 | speex_fatal("Wideband and Ultra-wideband are disabled"); |
| 92 | return -2; |
| 93 | } |
| 94 | int sb_encoder_ctl(void *state, int request, void *ptr) |
| 95 | { |
| 96 | speex_fatal("Wideband and Ultra-wideband are disabled"); |
| 97 | return -2; |
| 98 | } |
| 99 | int sb_decoder_ctl(void *state, int request, void *ptr) |
| 100 | { |
| 101 | speex_fatal("Wideband and Ultra-wideband are disabled"); |
| 102 | return -2; |
| 103 | } |
| 104 | #else |
| 105 | |
| 106 | |
| 107 | #ifndef M_PI |
| 108 | #define M_PI 3.14159265358979323846 /* pi */ |
| 109 | #endif |
| 110 | |
| 111 | #define sqr(x) ((x)*(x)) |
| 112 | |
| 113 | #define SUBMODE(x) st->submodes[st->submodeID]->x |
| 114 | |
| 115 | #ifdef FIXED_POINT |
| 116 | static const spx_word16_t gc_quant_bound[16] = {125, 164, 215, 282, 370, 484, 635, 832, 1090, 1428, 1871, 2452, 3213, 4210, 5516, 7228}; |
| 117 | static const spx_word16_t fold_quant_bound[32] = { |
| 118 | 39, 44, 50, 57, 64, 73, 83, 94, |
| 119 | 106, 120, 136, 154, 175, 198, 225, 255, |
| 120 | 288, 327, 370, 420, 476, 539, 611, 692, |
| 121 | 784, 889, 1007, 1141, 1293, 1465, 1660, 1881}; |
| 122 | #define LSP_MARGIN 410 |
| 123 | #define LSP_DELTA1 6553 |
| 124 | #define LSP_DELTA2 1638 |
| 125 | |
| 126 | #else |
| 127 | |
| 128 | static const spx_word16_t gc_quant_bound[16] = { |
| 129 | 0.97979, 1.28384, 1.68223, 2.20426, 2.88829, 3.78458, 4.95900, 6.49787, |
| 130 | 8.51428, 11.15642, 14.61846, 19.15484, 25.09895, 32.88761, 43.09325, 56.46588}; |
| 131 | static const spx_word16_t fold_quant_bound[32] = { |
| 132 | 0.30498, 0.34559, 0.39161, 0.44375, 0.50283, 0.56979, 0.64565, 0.73162, |
| 133 | 0.82903, 0.93942, 1.06450, 1.20624, 1.36685, 1.54884, 1.75506, 1.98875, |
| 134 | 2.25355, 2.55360, 2.89361, 3.27889, 3.71547, 4.21018, 4.77076, 5.40598, |
| 135 | 6.12577, 6.94141, 7.86565, 8.91295, 10.09969, 11.44445, 12.96826, 14.69497}; |
| 136 | |
| 137 | #define LSP_MARGIN .05 |
| 138 | #define LSP_DELTA1 .2 |
| 139 | #define LSP_DELTA2 .05 |
| 140 | |
| 141 | #endif |
| 142 | |
| 143 | #define QMF_ORDER 64 |
| 144 | |
| 145 | #ifdef FIXED_POINT |
| 146 | static const spx_word16_t h0[64] = {2, -7, -7, 18, 15, -39, -25, 75, 35, -130, -41, 212, 38, -327, -17, 483, -32, -689, 124, 956, -283, -1307, 543, 1780, -973, -2467, 1733, 3633, -3339, -6409, 9059, 30153, 30153, 9059, -6409, -3339, 3633, 1733, -2467, -973, 1780, 543, -1307, -283, 956, 124, -689, -32, 483, -17, -327, 38, 212, -41, -130, 35, 75, -25, -39, 15, 18, -7, -7, 2}; |
| 147 | |
| 148 | #else |
| 149 | static const float h0[64] = { |
| 150 | 3.596189e-05f, -0.0001123515f, |
| 151 | -0.0001104587f, 0.0002790277f, |
| 152 | 0.0002298438f, -0.0005953563f, |
| 153 | -0.0003823631f, 0.00113826f, |
| 154 | 0.0005308539f, -0.001986177f, |
| 155 | -0.0006243724f, 0.003235877f, |
| 156 | 0.0005743159f, -0.004989147f, |
| 157 | -0.0002584767f, 0.007367171f, |
| 158 | -0.0004857935f, -0.01050689f, |
| 159 | 0.001894714f, 0.01459396f, |
| 160 | -0.004313674f, -0.01994365f, |
| 161 | 0.00828756f, 0.02716055f, |
| 162 | -0.01485397f, -0.03764973f, |
| 163 | 0.026447f, 0.05543245f, |
| 164 | -0.05095487f, -0.09779096f, |
| 165 | 0.1382363f, 0.4600981f, |
| 166 | 0.4600981f, 0.1382363f, |
| 167 | -0.09779096f, -0.05095487f, |
| 168 | 0.05543245f, 0.026447f, |
| 169 | -0.03764973f, -0.01485397f, |
| 170 | 0.02716055f, 0.00828756f, |
| 171 | -0.01994365f, -0.004313674f, |
| 172 | 0.01459396f, 0.001894714f, |
| 173 | -0.01050689f, -0.0004857935f, |
| 174 | 0.007367171f, -0.0002584767f, |
| 175 | -0.004989147f, 0.0005743159f, |
| 176 | 0.003235877f, -0.0006243724f, |
| 177 | -0.001986177f, 0.0005308539f, |
| 178 | 0.00113826f, -0.0003823631f, |
| 179 | -0.0005953563f, 0.0002298438f, |
| 180 | 0.0002790277f, -0.0001104587f, |
| 181 | -0.0001123515f, 3.596189e-05f |
| 182 | }; |
| 183 | |
| 184 | #endif |
| 185 | |
| 186 | extern const spx_word16_t lag_window[]; |
| 187 | extern const spx_word16_t lpc_window[]; |
| 188 | |
| 189 | |
| 190 | void *sb_encoder_init(const SpeexMode *m) |
| 191 | { |
| 192 | int i; |
| 193 | spx_int32_t tmp; |
| 194 | SBEncState *st; |
| 195 | const SpeexSBMode *mode; |
| 196 | |
| 197 | st = (SBEncState*)speex_alloc(sizeof(SBEncState)); |
| 198 | if (!st) |
| 199 | return NULL; |
| 200 | st->mode = m; |
| 201 | mode = (const SpeexSBMode*)m->mode; |
| 202 | |
| 203 | |
| 204 | st->st_low = speex_encoder_init(mode->nb_mode); |
| 205 | #if defined(VAR_ARRAYS) || defined (USE_ALLOCA) |
| 206 | st->stack = NULL; |
| 207 | #else |
| 208 | /*st->stack = (char*)speex_alloc_scratch(SB_ENC_STACK);*/ |
| 209 | speex_encoder_ctl(st->st_low, SPEEX_GET_STACK, &st->stack); |
| 210 | #endif |
| 211 | |
| 212 | st->full_frame_size = 2*mode->frameSize; |
| 213 | st->frame_size = mode->frameSize; |
| 214 | st->subframeSize = mode->subframeSize; |
| 215 | st->nbSubframes = mode->frameSize/mode->subframeSize; |
| 216 | st->windowSize = st->frame_size+st->subframeSize; |
| 217 | st->lpcSize=mode->lpcSize; |
| 218 | |
| 219 | st->encode_submode = 1; |
| 220 | st->submodes=mode->submodes; |
| 221 | st->submodeSelect = st->submodeID=mode->defaultSubmode; |
| 222 | |
| 223 | tmp=9; |
| 224 | speex_encoder_ctl(st->st_low, SPEEX_SET_QUALITY, &tmp); |
| 225 | tmp=1; |
| 226 | speex_encoder_ctl(st->st_low, SPEEX_SET_WIDEBAND, &tmp); |
| 227 | |
| 228 | st->lpc_floor = mode->lpc_floor; |
| 229 | st->gamma1=mode->gamma1; |
| 230 | st->gamma2=mode->gamma2; |
| 231 | st->first=1; |
| 232 | |
| 233 | st->high=(spx_word16_t*)speex_alloc((st->windowSize-st->frame_size)*sizeof(spx_word16_t)); |
| 234 | |
| 235 | st->h0_mem=(spx_word16_t*)speex_alloc((QMF_ORDER)*sizeof(spx_word16_t)); |
| 236 | st->h1_mem=(spx_word16_t*)speex_alloc((QMF_ORDER)*sizeof(spx_word16_t)); |
| 237 | |
| 238 | st->window= lpc_window; |
| 239 | |
| 240 | st->lagWindow = lag_window; |
| 241 | |
| 242 | st->old_lsp = (spx_lsp_t*)speex_alloc(st->lpcSize*sizeof(spx_lsp_t)); |
| 243 | st->old_qlsp = (spx_lsp_t*)speex_alloc(st->lpcSize*sizeof(spx_lsp_t)); |
| 244 | st->interp_qlpc = (spx_coef_t*)speex_alloc(st->lpcSize*sizeof(spx_coef_t)); |
| 245 | st->pi_gain = (spx_word32_t*)speex_alloc((st->nbSubframes)*sizeof(spx_word32_t)); |
| 246 | st->exc_rms = (spx_word16_t*)speex_alloc((st->nbSubframes)*sizeof(spx_word16_t)); |
| 247 | st->innov_rms_save = NULL; |
| 248 | |
| 249 | st->mem_sp = (spx_mem_t*)speex_alloc((st->lpcSize)*sizeof(spx_mem_t)); |
| 250 | st->mem_sp2 = (spx_mem_t*)speex_alloc((st->lpcSize)*sizeof(spx_mem_t)); |
| 251 | st->mem_sw = (spx_mem_t*)speex_alloc((st->lpcSize)*sizeof(spx_mem_t)); |
| 252 | |
| 253 | for (i=0;i<st->lpcSize;i++) |
| 254 | st->old_lsp[i]= DIV32(MULT16_16(QCONST16(3.1415927f, LSP_SHIFT), i+1), st->lpcSize+1); |
| 255 | |
| 256 | #ifndef DISABLE_VBR |
| 257 | st->vbr_quality = 8; |
| 258 | st->vbr_enabled = 0; |
| 259 | st->vbr_max = 0; |
| 260 | st->vbr_max_high = 20000; /* We just need a big value here */ |
| 261 | st->vad_enabled = 0; |
| 262 | st->abr_enabled = 0; |
| 263 | st->relative_quality=0; |
| 264 | #endif /* #ifndef DISABLE_VBR */ |
| 265 | |
| 266 | st->complexity=2; |
| 267 | speex_encoder_ctl(st->st_low, SPEEX_GET_SAMPLING_RATE, &st->sampling_rate); |
| 268 | st->sampling_rate*=2; |
| 269 | #ifdef ENABLE_VALGRIND |
| 270 | VALGRIND_MAKE_READABLE(st, (st->stack-(char*)st)); |
| 271 | #endif |
| 272 | return st; |
| 273 | } |
| 274 | |
| 275 | void sb_encoder_destroy(void *state) |
| 276 | { |
| 277 | SBEncState *st=(SBEncState*)state; |
| 278 | |
| 279 | speex_encoder_destroy(st->st_low); |
| 280 | #if !(defined(VAR_ARRAYS) || defined (USE_ALLOCA)) |
| 281 | /*speex_free_scratch(st->stack);*/ |
| 282 | #endif |
| 283 | |
| 284 | speex_free(st->high); |
| 285 | |
| 286 | speex_free(st->h0_mem); |
| 287 | speex_free(st->h1_mem); |
| 288 | |
| 289 | speex_free(st->old_lsp); |
| 290 | speex_free(st->old_qlsp); |
| 291 | speex_free(st->interp_qlpc); |
| 292 | speex_free(st->pi_gain); |
| 293 | speex_free(st->exc_rms); |
| 294 | |
| 295 | speex_free(st->mem_sp); |
| 296 | speex_free(st->mem_sp2); |
| 297 | speex_free(st->mem_sw); |
| 298 | |
| 299 | |
| 300 | speex_free(st); |
| 301 | } |
| 302 | |
| 303 | |
| 304 | int sb_encode(void *state, void *vin, SpeexBits *bits) |
| 305 | { |
| 306 | SBEncState *st; |
| 307 | int i, roots, sub; |
| 308 | char *stack; |
| 309 | VARDECL(spx_mem_t *mem); |
| 310 | VARDECL(spx_sig_t *innov); |
| 311 | VARDECL(spx_word16_t *target); |
| 312 | VARDECL(spx_word16_t *syn_resp); |
| 313 | VARDECL(spx_word32_t *low_pi_gain); |
| 314 | spx_word16_t *low; |
| 315 | spx_word16_t *high; |
| 316 | VARDECL(spx_word16_t *low_exc_rms); |
| 317 | VARDECL(spx_word16_t *low_innov_rms); |
| 318 | const SpeexSBMode *mode; |
| 319 | spx_int32_t dtx; |
| 320 | spx_word16_t *in = (spx_word16_t*)vin; |
| 321 | spx_word16_t e_low=0, e_high=0; |
| 322 | VARDECL(spx_coef_t *lpc); |
| 323 | VARDECL(spx_coef_t *interp_lpc); |
| 324 | VARDECL(spx_coef_t *bw_lpc1); |
| 325 | VARDECL(spx_coef_t *bw_lpc2); |
| 326 | VARDECL(spx_lsp_t *lsp); |
| 327 | VARDECL(spx_lsp_t *qlsp); |
| 328 | VARDECL(spx_lsp_t *interp_lsp); |
| 329 | VARDECL(spx_lsp_t *interp_qlsp); |
| 330 | |
| 331 | st = (SBEncState*)state; |
| 332 | stack=st->stack; |
| 333 | mode = (const SpeexSBMode*)(st->mode->mode); |
| 334 | low = in; |
| 335 | high = in+st->frame_size; |
| 336 | |
| 337 | /* High-band buffering / sync with low band */ |
| 338 | /* Compute the two sub-bands by filtering with QMF h0*/ |
| 339 | qmf_decomp(in, h0, low, high, st->full_frame_size, QMF_ORDER, st->h0_mem, stack); |
| 340 | |
| 341 | #ifndef DISABLE_VBR |
| 342 | if (st->vbr_enabled || st->vad_enabled) |
| 343 | { |
| 344 | /* Need to compute things here before the signal is trashed by the encoder */ |
| 345 | /*FIXME: Are the two signals (low, high) in sync? */ |
| 346 | e_low = compute_rms16(low, st->frame_size); |
| 347 | e_high = compute_rms16(high, st->frame_size); |
| 348 | } |
| 349 | #endif /* #ifndef DISABLE_VBR */ |
| 350 | |
| 351 | ALLOC(low_innov_rms, st->nbSubframes, spx_word16_t); |
| 352 | speex_encoder_ctl(st->st_low, SPEEX_SET_INNOVATION_SAVE, low_innov_rms); |
| 353 | /* Encode the narrowband part*/ |
| 354 | speex_encode_native(st->st_low, low, bits); |
| 355 | |
| 356 | high = high - (st->windowSize-st->frame_size); |
| 357 | SPEEX_COPY(high, st->high, st->windowSize-st->frame_size); |
| 358 | SPEEX_COPY(st->high, &high[st->frame_size], st->windowSize-st->frame_size); |
| 359 | |
| 360 | |
| 361 | ALLOC(low_pi_gain, st->nbSubframes, spx_word32_t); |
| 362 | ALLOC(low_exc_rms, st->nbSubframes, spx_word16_t); |
| 363 | speex_encoder_ctl(st->st_low, SPEEX_GET_PI_GAIN, low_pi_gain); |
| 364 | speex_encoder_ctl(st->st_low, SPEEX_GET_EXC, low_exc_rms); |
| 365 | |
| 366 | speex_encoder_ctl(st->st_low, SPEEX_GET_LOW_MODE, &dtx); |
| 367 | |
| 368 | if (dtx==0) |
| 369 | dtx=1; |
| 370 | else |
| 371 | dtx=0; |
| 372 | |
| 373 | ALLOC(lpc, st->lpcSize, spx_coef_t); |
| 374 | ALLOC(interp_lpc, st->lpcSize, spx_coef_t); |
| 375 | ALLOC(bw_lpc1, st->lpcSize, spx_coef_t); |
| 376 | ALLOC(bw_lpc2, st->lpcSize, spx_coef_t); |
| 377 | |
| 378 | ALLOC(lsp, st->lpcSize, spx_lsp_t); |
| 379 | ALLOC(qlsp, st->lpcSize, spx_lsp_t); |
| 380 | ALLOC(interp_lsp, st->lpcSize, spx_lsp_t); |
| 381 | ALLOC(interp_qlsp, st->lpcSize, spx_lsp_t); |
| 382 | |
| 383 | { |
| 384 | VARDECL(spx_word16_t *autocorr); |
| 385 | VARDECL(spx_word16_t *w_sig); |
| 386 | ALLOC(autocorr, st->lpcSize+1, spx_word16_t); |
| 387 | ALLOC(w_sig, st->windowSize, spx_word16_t); |
| 388 | /* Window for analysis */ |
| 389 | /* FIXME: This is a kludge */ |
| 390 | if (st->subframeSize==80) |
| 391 | { |
| 392 | for (i=0;i<st->windowSize;i++) |
| 393 | w_sig[i] = EXTRACT16(SHR32(MULT16_16(high[i],st->window[i>>1]),SIG_SHIFT)); |
| 394 | } else { |
| 395 | for (i=0;i<st->windowSize;i++) |
| 396 | w_sig[i] = EXTRACT16(SHR32(MULT16_16(high[i],st->window[i]),SIG_SHIFT)); |
| 397 | } |
| 398 | /* Compute auto-correlation */ |
| 399 | _spx_autocorr(w_sig, autocorr, st->lpcSize+1, st->windowSize); |
| 400 | autocorr[0] = ADD16(autocorr[0],MULT16_16_Q15(autocorr[0],st->lpc_floor)); /* Noise floor in auto-correlation domain */ |
| 401 | |
| 402 | /* Lag windowing: equivalent to filtering in the power-spectrum domain */ |
| 403 | for (i=0;i<st->lpcSize+1;i++) |
| 404 | autocorr[i] = MULT16_16_Q14(autocorr[i],st->lagWindow[i]); |
| 405 | |
| 406 | /* Levinson-Durbin */ |
| 407 | _spx_lpc(lpc, autocorr, st->lpcSize); |
| 408 | } |
| 409 | |
| 410 | /* LPC to LSPs (x-domain) transform */ |
| 411 | roots=lpc_to_lsp (lpc, st->lpcSize, lsp, 10, LSP_DELTA1, stack); |
| 412 | if (roots!=st->lpcSize) |
| 413 | { |
| 414 | roots = lpc_to_lsp (lpc, st->lpcSize, lsp, 10, LSP_DELTA2, stack); |
| 415 | if (roots!=st->lpcSize) { |
| 416 | /*If we can't find all LSP's, do some damage control and use a flat filter*/ |
| 417 | for (i=0;i<st->lpcSize;i++) |
| 418 | { |
| 419 | lsp[i]=st->old_lsp[i]; |
| 420 | } |
| 421 | } |
| 422 | } |
| 423 | |
| 424 | #ifndef DISABLE_VBR |
| 425 | /* VBR code */ |
| 426 | if ((st->vbr_enabled || st->vad_enabled) && !dtx) |
| 427 | { |
| 428 | float ratio; |
| 429 | if (st->abr_enabled) |
| 430 | { |
| 431 | float qual_change=0; |
| 432 | if (st->abr_drift2 * st->abr_drift > 0) |
| 433 | { |
| 434 | /* Only adapt if long-term and short-term drift are the same sign */ |
| 435 | qual_change = -.00001*st->abr_drift/(1+st->abr_count); |
| 436 | if (qual_change>.1) |
| 437 | qual_change=.1; |
| 438 | if (qual_change<-.1) |
| 439 | qual_change=-.1; |
| 440 | } |
| 441 | st->vbr_quality += qual_change; |
| 442 | if (st->vbr_quality>10) |
| 443 | st->vbr_quality=10; |
| 444 | if (st->vbr_quality<0) |
| 445 | st->vbr_quality=0; |
| 446 | } |
| 447 | |
| 448 | |
| 449 | ratio = 2*log((1.f+e_high)/(1.f+e_low)); |
| 450 | |
| 451 | speex_encoder_ctl(st->st_low, SPEEX_GET_RELATIVE_QUALITY, &st->relative_quality); |
| 452 | if (ratio<-4) |
| 453 | ratio=-4; |
| 454 | if (ratio>2) |
| 455 | ratio=2; |
| 456 | /*if (ratio>-2)*/ |
| 457 | if (st->vbr_enabled) |
| 458 | { |
| 459 | spx_int32_t modeid; |
| 460 | modeid = mode->nb_modes-1; |
| 461 | st->relative_quality+=1.0*(ratio+2); |
| 462 | if (st->relative_quality<-1) |
| 463 | st->relative_quality=-1; |
| 464 | while (modeid) |
| 465 | { |
| 466 | int v1; |
| 467 | float thresh; |
| 468 | v1=(int)floor(st->vbr_quality); |
| 469 | if (v1==10) |
| 470 | thresh = mode->vbr_thresh[modeid][v1]; |
| 471 | else |
| 472 | thresh = (st->vbr_quality-v1) * mode->vbr_thresh[modeid][v1+1] + |
| 473 | (1+v1-st->vbr_quality) * mode->vbr_thresh[modeid][v1]; |
| 474 | if (st->relative_quality >= thresh && st->sampling_rate*st->submodes[modeid]->bits_per_frame/st->full_frame_size <= st->vbr_max_high) |
| 475 | break; |
| 476 | modeid--; |
| 477 | } |
| 478 | speex_encoder_ctl(state, SPEEX_SET_HIGH_MODE, &modeid); |
| 479 | if (st->abr_enabled) |
| 480 | { |
| 481 | spx_int32_t bitrate; |
| 482 | speex_encoder_ctl(state, SPEEX_GET_BITRATE, &bitrate); |
| 483 | st->abr_drift+=(bitrate-st->abr_enabled); |
| 484 | st->abr_drift2 = .95*st->abr_drift2 + .05*(bitrate-st->abr_enabled); |
| 485 | st->abr_count += 1.0; |
| 486 | } |
| 487 | |
| 488 | } else { |
| 489 | /* VAD only */ |
| 490 | int modeid; |
| 491 | if (st->relative_quality<2.0) |
| 492 | modeid=1; |
| 493 | else |
| 494 | modeid=st->submodeSelect; |
| 495 | /*speex_encoder_ctl(state, SPEEX_SET_MODE, &mode);*/ |
| 496 | st->submodeID=modeid; |
| 497 | |
| 498 | } |
| 499 | /*fprintf (stderr, "%f %f\n", ratio, low_qual);*/ |
| 500 | } |
| 501 | #endif /* #ifndef DISABLE_VBR */ |
| 502 | |
| 503 | if (st->encode_submode) |
| 504 | { |
| 505 | speex_bits_pack(bits, 1, 1); |
| 506 | if (dtx) |
| 507 | speex_bits_pack(bits, 0, SB_SUBMODE_BITS); |
| 508 | else |
| 509 | speex_bits_pack(bits, st->submodeID, SB_SUBMODE_BITS); |
| 510 | } |
| 511 | |
| 512 | /* If null mode (no transmission), just set a couple things to zero*/ |
| 513 | if (dtx || st->submodes[st->submodeID] == NULL) |
| 514 | { |
| 515 | for (i=0;i<st->frame_size;i++) |
| 516 | high[i]=VERY_SMALL; |
| 517 | |
| 518 | for (i=0;i<st->lpcSize;i++) |
| 519 | st->mem_sw[i]=0; |
| 520 | st->first=1; |
| 521 | |
| 522 | /* Final signal synthesis from excitation */ |
| 523 | iir_mem16(high, st->interp_qlpc, high, st->frame_size, st->lpcSize, st->mem_sp, stack); |
| 524 | |
| 525 | if (dtx) |
| 526 | return 0; |
| 527 | else |
| 528 | return 1; |
| 529 | } |
| 530 | |
| 531 | |
| 532 | /* LSP quantization */ |
| 533 | SUBMODE(lsp_quant)(lsp, qlsp, st->lpcSize, bits); |
| 534 | |
| 535 | if (st->first) |
| 536 | { |
| 537 | for (i=0;i<st->lpcSize;i++) |
| 538 | st->old_lsp[i] = lsp[i]; |
| 539 | for (i=0;i<st->lpcSize;i++) |
| 540 | st->old_qlsp[i] = qlsp[i]; |
| 541 | } |
| 542 | |
| 543 | ALLOC(mem, st->lpcSize, spx_mem_t); |
| 544 | ALLOC(syn_resp, st->subframeSize, spx_word16_t); |
| 545 | ALLOC(innov, st->subframeSize, spx_sig_t); |
| 546 | ALLOC(target, st->subframeSize, spx_word16_t); |
| 547 | |
| 548 | for (sub=0;sub<st->nbSubframes;sub++) |
| 549 | { |
| 550 | VARDECL(spx_word16_t *exc); |
| 551 | VARDECL(spx_word16_t *res); |
| 552 | VARDECL(spx_word16_t *sw); |
| 553 | spx_word16_t *sp; |
| 554 | spx_word16_t filter_ratio; /*Q7*/ |
| 555 | int offset; |
| 556 | spx_word32_t rl, rh; /*Q13*/ |
| 557 | spx_word16_t eh=0; |
| 558 | |
| 559 | offset = st->subframeSize*sub; |
| 560 | sp=high+offset; |
| 561 | ALLOC(exc, st->subframeSize, spx_word16_t); |
| 562 | ALLOC(res, st->subframeSize, spx_word16_t); |
| 563 | ALLOC(sw, st->subframeSize, spx_word16_t); |
| 564 | |
| 565 | /* LSP interpolation (quantized and unquantized) */ |
| 566 | lsp_interpolate(st->old_lsp, lsp, interp_lsp, st->lpcSize, sub, st->nbSubframes); |
| 567 | lsp_interpolate(st->old_qlsp, qlsp, interp_qlsp, st->lpcSize, sub, st->nbSubframes); |
| 568 | |
| 569 | lsp_enforce_margin(interp_lsp, st->lpcSize, LSP_MARGIN); |
| 570 | lsp_enforce_margin(interp_qlsp, st->lpcSize, LSP_MARGIN); |
| 571 | |
| 572 | lsp_to_lpc(interp_lsp, interp_lpc, st->lpcSize,stack); |
| 573 | lsp_to_lpc(interp_qlsp, st->interp_qlpc, st->lpcSize, stack); |
| 574 | |
| 575 | bw_lpc(st->gamma1, interp_lpc, bw_lpc1, st->lpcSize); |
| 576 | bw_lpc(st->gamma2, interp_lpc, bw_lpc2, st->lpcSize); |
| 577 | |
| 578 | /* Compute mid-band (4000 Hz for wideband) response of low-band and high-band |
| 579 | filters */ |
| 580 | st->pi_gain[sub]=LPC_SCALING; |
| 581 | rh = LPC_SCALING; |
| 582 | for (i=0;i<st->lpcSize;i+=2) |
| 583 | { |
| 584 | rh += st->interp_qlpc[i+1] - st->interp_qlpc[i]; |
| 585 | st->pi_gain[sub] += st->interp_qlpc[i] + st->interp_qlpc[i+1]; |
| 586 | } |
| 587 | |
| 588 | rl = low_pi_gain[sub]; |
| 589 | #ifdef FIXED_POINT |
| 590 | filter_ratio=EXTRACT16(SATURATE(PDIV32(SHL32(ADD32(rl,82),7),ADD32(82,rh)),32767)); |
| 591 | #else |
| 592 | filter_ratio=(rl+.01)/(rh+.01); |
| 593 | #endif |
| 594 | |
| 595 | /* Compute "real excitation" */ |
| 596 | fir_mem16(sp, st->interp_qlpc, exc, st->subframeSize, st->lpcSize, st->mem_sp2, stack); |
| 597 | /* Compute energy of low-band and high-band excitation */ |
| 598 | |
| 599 | eh = compute_rms16(exc, st->subframeSize); |
| 600 | |
| 601 | if (!SUBMODE(innovation_quant)) {/* 1 for spectral folding excitation, 0 for stochastic */ |
| 602 | spx_word32_t g; /*Q7*/ |
| 603 | spx_word16_t el; /*Q0*/ |
| 604 | el = low_innov_rms[sub]; |
| 605 | |
| 606 | /* Gain to use if we want to use the low-band excitation for high-band */ |
| 607 | g=PDIV32(MULT16_16(filter_ratio,eh),EXTEND32(ADD16(1,el))); |
| 608 | |
| 609 | #if 0 |
| 610 | { |
| 611 | char *tmp_stack=stack; |
| 612 | float *tmp_sig; |
| 613 | float g2; |
| 614 | ALLOC(tmp_sig, st->subframeSize, spx_sig_t); |
| 615 | for (i=0;i<st->lpcSize;i++) |
| 616 | mem[i]=st->mem_sp[i]; |
| 617 | iir_mem2(st->low_innov+offset, st->interp_qlpc, tmp_sig, st->subframeSize, st->lpcSize, mem); |
| 618 | g2 = compute_rms(sp, st->subframeSize)/(.01+compute_rms(tmp_sig, st->subframeSize)); |
| 619 | /*fprintf (stderr, "gains: %f %f\n", g, g2);*/ |
| 620 | g = g2; |
| 621 | stack = tmp_stack; |
| 622 | } |
| 623 | #endif |
| 624 | |
| 625 | /*print_vec(&g, 1, "gain factor");*/ |
| 626 | /* Gain quantization */ |
| 627 | { |
| 628 | int quant = scal_quant(g, fold_quant_bound, 32); |
| 629 | /*speex_warning_int("tata", quant);*/ |
| 630 | if (quant<0) |
| 631 | quant=0; |
| 632 | if (quant>31) |
| 633 | quant=31; |
| 634 | speex_bits_pack(bits, quant, 5); |
| 635 | } |
| 636 | if (st->innov_rms_save) |
| 637 | { |
| 638 | st->innov_rms_save[sub] = eh; |
| 639 | } |
| 640 | st->exc_rms[sub] = eh; |
| 641 | } else { |
| 642 | spx_word16_t gc; /*Q7*/ |
| 643 | spx_word32_t scale; /*Q14*/ |
| 644 | spx_word16_t el; /*Q0*/ |
| 645 | el = low_exc_rms[sub]; /*Q0*/ |
| 646 | |
| 647 | gc = PDIV32_16(MULT16_16(filter_ratio,1+eh),1+el); |
| 648 | |
| 649 | /* This is a kludge that cleans up a historical bug */ |
| 650 | if (st->subframeSize==80) |
| 651 | gc = MULT16_16_P15(QCONST16(0.70711f,15),gc); |
| 652 | /*printf ("%f %f %f %f\n", el, eh, filter_ratio, gc);*/ |
| 653 | { |
| 654 | int qgc = scal_quant(gc, gc_quant_bound, 16); |
| 655 | speex_bits_pack(bits, qgc, 4); |
| 656 | gc = MULT16_16_Q15(QCONST16(0.87360,15),gc_quant_bound[qgc]); |
| 657 | } |
| 658 | if (st->subframeSize==80) |
| 659 | gc = MULT16_16_P14(QCONST16(1.4142f,14), gc); |
| 660 | |
| 661 | scale = SHL32(MULT16_16(PDIV32_16(SHL32(EXTEND32(gc),SIG_SHIFT-6),filter_ratio),(1+el)),6); |
| 662 | |
| 663 | compute_impulse_response(st->interp_qlpc, bw_lpc1, bw_lpc2, syn_resp, st->subframeSize, st->lpcSize, stack); |
| 664 | |
| 665 | |
| 666 | /* Reset excitation */ |
| 667 | for (i=0;i<st->subframeSize;i++) |
| 668 | res[i]=VERY_SMALL; |
| 669 | |
| 670 | /* Compute zero response (ringing) of A(z/g1) / ( A(z/g2) * Aq(z) ) */ |
| 671 | for (i=0;i<st->lpcSize;i++) |
| 672 | mem[i]=st->mem_sp[i]; |
| 673 | iir_mem16(res, st->interp_qlpc, res, st->subframeSize, st->lpcSize, mem, stack); |
| 674 | |
| 675 | for (i=0;i<st->lpcSize;i++) |
| 676 | mem[i]=st->mem_sw[i]; |
| 677 | filter_mem16(res, bw_lpc1, bw_lpc2, res, st->subframeSize, st->lpcSize, mem, stack); |
| 678 | |
| 679 | /* Compute weighted signal */ |
| 680 | for (i=0;i<st->lpcSize;i++) |
| 681 | mem[i]=st->mem_sw[i]; |
| 682 | filter_mem16(sp, bw_lpc1, bw_lpc2, sw, st->subframeSize, st->lpcSize, mem, stack); |
| 683 | |
| 684 | /* Compute target signal */ |
| 685 | for (i=0;i<st->subframeSize;i++) |
| 686 | target[i]=SUB16(sw[i],res[i]); |
| 687 | |
| 688 | signal_div(target, target, scale, st->subframeSize); |
| 689 | |
| 690 | /* Reset excitation */ |
| 691 | SPEEX_MEMSET(innov, 0, st->subframeSize); |
| 692 | |
| 693 | /*print_vec(target, st->subframeSize, "\ntarget");*/ |
| 694 | SUBMODE(innovation_quant)(target, st->interp_qlpc, bw_lpc1, bw_lpc2, |
| 695 | SUBMODE(innovation_params), st->lpcSize, st->subframeSize, |
| 696 | innov, syn_resp, bits, stack, st->complexity, SUBMODE(double_codebook)); |
| 697 | /*print_vec(target, st->subframeSize, "after");*/ |
| 698 | |
| 699 | signal_mul(innov, innov, scale, st->subframeSize); |
| 700 | |
| 701 | if (SUBMODE(double_codebook)) { |
| 702 | char *tmp_stack=stack; |
| 703 | VARDECL(spx_sig_t *innov2); |
| 704 | ALLOC(innov2, st->subframeSize, spx_sig_t); |
| 705 | SPEEX_MEMSET(innov2, 0, st->subframeSize); |
| 706 | for (i=0;i<st->subframeSize;i++) |
| 707 | target[i]=MULT16_16_P13(QCONST16(2.5f,13), target[i]); |
| 708 | |
| 709 | SUBMODE(innovation_quant)(target, st->interp_qlpc, bw_lpc1, bw_lpc2, |
| 710 | SUBMODE(innovation_params), st->lpcSize, st->subframeSize, |
| 711 | innov2, syn_resp, bits, stack, st->complexity, 0); |
| 712 | signal_mul(innov2, innov2, MULT16_32_P15(QCONST16(0.4f,15),scale), st->subframeSize); |
| 713 | |
| 714 | for (i=0;i<st->subframeSize;i++) |
| 715 | innov[i] = ADD32(innov[i],innov2[i]); |
| 716 | stack = tmp_stack; |
| 717 | } |
| 718 | for (i=0;i<st->subframeSize;i++) |
| 719 | exc[i] = PSHR32(innov[i],SIG_SHIFT); |
| 720 | |
| 721 | if (st->innov_rms_save) |
| 722 | { |
| 723 | st->innov_rms_save[sub] = MULT16_16_Q15(QCONST16(.70711f, 15), compute_rms(innov, st->subframeSize)); |
| 724 | } |
| 725 | st->exc_rms[sub] = compute_rms16(exc, st->subframeSize); |
| 726 | |
| 727 | |
| 728 | } |
| 729 | |
| 730 | |
| 731 | /*Keep the previous memory*/ |
| 732 | for (i=0;i<st->lpcSize;i++) |
| 733 | mem[i]=st->mem_sp[i]; |
| 734 | /* Final signal synthesis from excitation */ |
| 735 | iir_mem16(exc, st->interp_qlpc, sp, st->subframeSize, st->lpcSize, st->mem_sp, stack); |
| 736 | |
| 737 | /* Compute weighted signal again, from synthesized speech (not sure it's the right thing) */ |
| 738 | filter_mem16(sp, bw_lpc1, bw_lpc2, sw, st->subframeSize, st->lpcSize, st->mem_sw, stack); |
| 739 | } |
| 740 | |
| 741 | for (i=0;i<st->lpcSize;i++) |
| 742 | st->old_lsp[i] = lsp[i]; |
| 743 | for (i=0;i<st->lpcSize;i++) |
| 744 | st->old_qlsp[i] = qlsp[i]; |
| 745 | |
| 746 | st->first=0; |
| 747 | |
| 748 | return 1; |
| 749 | } |
| 750 | |
| 751 | |
| 752 | |
| 753 | |
| 754 | |
| 755 | void *sb_decoder_init(const SpeexMode *m) |
| 756 | { |
| 757 | spx_int32_t tmp; |
| 758 | SBDecState *st; |
| 759 | const SpeexSBMode *mode; |
| 760 | st = (SBDecState*)speex_alloc(sizeof(SBDecState)); |
| 761 | if (!st) |
| 762 | return NULL; |
| 763 | st->mode = m; |
| 764 | mode=(const SpeexSBMode*)m->mode; |
| 765 | st->encode_submode = 1; |
| 766 | |
| 767 | st->st_low = speex_decoder_init(mode->nb_mode); |
| 768 | #if defined(VAR_ARRAYS) || defined (USE_ALLOCA) |
| 769 | st->stack = NULL; |
| 770 | #else |
| 771 | /*st->stack = (char*)speex_alloc_scratch(SB_DEC_STACK);*/ |
| 772 | speex_decoder_ctl(st->st_low, SPEEX_GET_STACK, &st->stack); |
| 773 | #endif |
| 774 | |
| 775 | st->full_frame_size = 2*mode->frameSize; |
| 776 | st->frame_size = mode->frameSize; |
| 777 | st->subframeSize = mode->subframeSize; |
| 778 | st->nbSubframes = mode->frameSize/mode->subframeSize; |
| 779 | st->lpcSize=mode->lpcSize; |
| 780 | speex_decoder_ctl(st->st_low, SPEEX_GET_SAMPLING_RATE, &st->sampling_rate); |
| 781 | st->sampling_rate*=2; |
| 782 | tmp=1; |
| 783 | speex_decoder_ctl(st->st_low, SPEEX_SET_WIDEBAND, &tmp); |
| 784 | |
| 785 | st->submodes=mode->submodes; |
| 786 | st->submodeID=mode->defaultSubmode; |
| 787 | |
| 788 | st->first=1; |
| 789 | |
| 790 | st->g0_mem = (spx_word16_t*)speex_alloc((QMF_ORDER)*sizeof(spx_word16_t)); |
| 791 | st->g1_mem = (spx_word16_t*)speex_alloc((QMF_ORDER)*sizeof(spx_word16_t)); |
| 792 | |
| 793 | st->excBuf = (spx_word16_t*)speex_alloc((st->subframeSize)*sizeof(spx_word16_t)); |
| 794 | |
| 795 | st->old_qlsp = (spx_lsp_t*)speex_alloc((st->lpcSize)*sizeof(spx_lsp_t)); |
| 796 | st->interp_qlpc = (spx_coef_t*)speex_alloc(st->lpcSize*sizeof(spx_coef_t)); |
| 797 | |
| 798 | st->pi_gain = (spx_word32_t*)speex_alloc((st->nbSubframes)*sizeof(spx_word32_t)); |
| 799 | st->exc_rms = (spx_word16_t*)speex_alloc((st->nbSubframes)*sizeof(spx_word16_t)); |
| 800 | st->mem_sp = (spx_mem_t*)speex_alloc((2*st->lpcSize)*sizeof(spx_mem_t)); |
| 801 | |
| 802 | st->innov_save = NULL; |
| 803 | |
| 804 | |
| 805 | st->lpc_enh_enabled=0; |
| 806 | st->seed = 1000; |
| 807 | |
| 808 | #ifdef ENABLE_VALGRIND |
| 809 | VALGRIND_MAKE_READABLE(st, (st->stack-(char*)st)); |
| 810 | #endif |
| 811 | return st; |
| 812 | } |
| 813 | |
| 814 | void sb_decoder_destroy(void *state) |
| 815 | { |
| 816 | SBDecState *st; |
| 817 | st = (SBDecState*)state; |
| 818 | speex_decoder_destroy(st->st_low); |
| 819 | #if !(defined(VAR_ARRAYS) || defined (USE_ALLOCA)) |
| 820 | /*speex_free_scratch(st->stack);*/ |
| 821 | #endif |
| 822 | |
| 823 | speex_free(st->g0_mem); |
| 824 | speex_free(st->g1_mem); |
| 825 | speex_free(st->excBuf); |
| 826 | speex_free(st->old_qlsp); |
| 827 | speex_free(st->interp_qlpc); |
| 828 | speex_free(st->pi_gain); |
| 829 | speex_free(st->exc_rms); |
| 830 | speex_free(st->mem_sp); |
| 831 | |
| 832 | speex_free(state); |
| 833 | } |
| 834 | |
| 835 | static void sb_decode_lost(SBDecState *st, spx_word16_t *out, int dtx, char *stack) |
| 836 | { |
| 837 | int i; |
| 838 | int saved_modeid=0; |
| 839 | |
| 840 | if (dtx) |
| 841 | { |
| 842 | saved_modeid=st->submodeID; |
| 843 | st->submodeID=1; |
| 844 | } else { |
| 845 | bw_lpc(QCONST16(0.99f,15), st->interp_qlpc, st->interp_qlpc, st->lpcSize); |
| 846 | } |
| 847 | |
| 848 | st->first=1; |
| 849 | |
| 850 | |
| 851 | /* Final signal synthesis from excitation */ |
| 852 | if (!dtx) |
| 853 | { |
| 854 | st->last_ener = MULT16_16_Q15(QCONST16(.9f,15),st->last_ener); |
| 855 | } |
| 856 | for (i=0;i<st->frame_size;i++) |
| 857 | out[i+st->frame_size] = speex_rand(st->last_ener, &st->seed); |
| 858 | |
| 859 | iir_mem16(out+st->frame_size, st->interp_qlpc, out+st->frame_size, st->frame_size, st->lpcSize, |
| 860 | st->mem_sp, stack); |
| 861 | |
| 862 | |
| 863 | /* Reconstruct the original */ |
| 864 | qmf_synth(out, out+st->frame_size, h0, out, st->full_frame_size, QMF_ORDER, st->g0_mem, st->g1_mem, stack); |
| 865 | if (dtx) |
| 866 | { |
| 867 | st->submodeID=saved_modeid; |
| 868 | } |
| 869 | |
| 870 | return; |
| 871 | } |
| 872 | |
| 873 | int sb_decode(void *state, SpeexBits *bits, void *vout) |
| 874 | { |
| 875 | int i, sub; |
| 876 | SBDecState *st; |
| 877 | int wideband; |
| 878 | int ret; |
| 879 | char *stack; |
| 880 | VARDECL(spx_word32_t *low_pi_gain); |
| 881 | VARDECL(spx_word16_t *low_exc_rms); |
| 882 | VARDECL(spx_coef_t *ak); |
| 883 | VARDECL(spx_lsp_t *qlsp); |
| 884 | VARDECL(spx_lsp_t *interp_qlsp); |
| 885 | spx_int32_t dtx; |
| 886 | const SpeexSBMode *mode; |
| 887 | spx_word16_t *out = (spx_word16_t*)vout; |
| 888 | spx_word16_t *low_innov_alias; |
| 889 | spx_word32_t exc_ener_sum = 0; |
| 890 | |
| 891 | st = (SBDecState*)state; |
| 892 | stack=st->stack; |
| 893 | mode = (const SpeexSBMode*)(st->mode->mode); |
| 894 | |
| 895 | low_innov_alias = out+st->frame_size; |
| 896 | speex_decoder_ctl(st->st_low, SPEEX_SET_INNOVATION_SAVE, low_innov_alias); |
| 897 | /* Decode the low-band */ |
| 898 | ret = speex_decode_native(st->st_low, bits, out); |
| 899 | |
| 900 | speex_decoder_ctl(st->st_low, SPEEX_GET_DTX_STATUS, &dtx); |
| 901 | |
| 902 | /* If error decoding the narrowband part, propagate error */ |
| 903 | if (ret!=0) |
| 904 | { |
| 905 | return ret; |
| 906 | } |
| 907 | |
| 908 | if (!bits) |
| 909 | { |
| 910 | sb_decode_lost(st, out, dtx, stack); |
| 911 | return 0; |
| 912 | } |
| 913 | |
| 914 | if (st->encode_submode) |
| 915 | { |
| 916 | |
| 917 | /*Check "wideband bit"*/ |
| 918 | if (speex_bits_remaining(bits)>0) |
| 919 | wideband = speex_bits_peek(bits); |
| 920 | else |
| 921 | wideband = 0; |
| 922 | if (wideband) |
| 923 | { |
| 924 | /*Regular wideband frame, read the submode*/ |
| 925 | wideband = speex_bits_unpack_unsigned(bits, 1); |
| 926 | st->submodeID = speex_bits_unpack_unsigned(bits, SB_SUBMODE_BITS); |
| 927 | } else |
| 928 | { |
| 929 | /*Was a narrowband frame, set "null submode"*/ |
| 930 | st->submodeID = 0; |
| 931 | } |
| 932 | if (st->submodeID != 0 && st->submodes[st->submodeID] == NULL) |
| 933 | { |
| 934 | speex_notify("Invalid mode encountered. The stream is corrupted."); |
| 935 | return -2; |
| 936 | } |
| 937 | } |
| 938 | |
| 939 | /* If null mode (no transmission), just set a couple things to zero*/ |
| 940 | if (st->submodes[st->submodeID] == NULL) |
| 941 | { |
| 942 | if (dtx) |
| 943 | { |
| 944 | sb_decode_lost(st, out, 1, stack); |
| 945 | return 0; |
| 946 | } |
| 947 | |
| 948 | for (i=0;i<st->frame_size;i++) |
| 949 | out[st->frame_size+i]=VERY_SMALL; |
| 950 | |
| 951 | st->first=1; |
| 952 | |
| 953 | /* Final signal synthesis from excitation */ |
| 954 | iir_mem16(out+st->frame_size, st->interp_qlpc, out+st->frame_size, st->frame_size, st->lpcSize, st->mem_sp, stack); |
| 955 | |
| 956 | qmf_synth(out, out+st->frame_size, h0, out, st->full_frame_size, QMF_ORDER, st->g0_mem, st->g1_mem, stack); |
| 957 | |
| 958 | return 0; |
| 959 | |
| 960 | } |
| 961 | |
| 962 | ALLOC(low_pi_gain, st->nbSubframes, spx_word32_t); |
| 963 | ALLOC(low_exc_rms, st->nbSubframes, spx_word16_t); |
| 964 | speex_decoder_ctl(st->st_low, SPEEX_GET_PI_GAIN, low_pi_gain); |
| 965 | speex_decoder_ctl(st->st_low, SPEEX_GET_EXC, low_exc_rms); |
| 966 | |
| 967 | ALLOC(qlsp, st->lpcSize, spx_lsp_t); |
| 968 | ALLOC(interp_qlsp, st->lpcSize, spx_lsp_t); |
| 969 | SUBMODE(lsp_unquant)(qlsp, st->lpcSize, bits); |
| 970 | |
| 971 | if (st->first) |
| 972 | { |
| 973 | for (i=0;i<st->lpcSize;i++) |
| 974 | st->old_qlsp[i] = qlsp[i]; |
| 975 | } |
| 976 | |
| 977 | ALLOC(ak, st->lpcSize, spx_coef_t); |
| 978 | |
| 979 | for (sub=0;sub<st->nbSubframes;sub++) |
| 980 | { |
| 981 | VARDECL(spx_word32_t *exc); |
| 982 | spx_word16_t *innov_save=NULL; |
| 983 | spx_word16_t *sp; |
| 984 | spx_word16_t filter_ratio; |
| 985 | spx_word16_t el=0; |
| 986 | int offset; |
| 987 | spx_word32_t rl=0,rh=0; |
| 988 | |
| 989 | offset = st->subframeSize*sub; |
| 990 | sp=out+st->frame_size+offset; |
| 991 | ALLOC(exc, st->subframeSize, spx_word32_t); |
| 992 | /* Pointer for saving innovation */ |
| 993 | if (st->innov_save) |
| 994 | { |
| 995 | innov_save = st->innov_save+2*offset; |
| 996 | SPEEX_MEMSET(innov_save, 0, 2*st->subframeSize); |
| 997 | } |
| 998 | |
| 999 | /* LSP interpolation */ |
| 1000 | lsp_interpolate(st->old_qlsp, qlsp, interp_qlsp, st->lpcSize, sub, st->nbSubframes); |
| 1001 | |
| 1002 | lsp_enforce_margin(interp_qlsp, st->lpcSize, LSP_MARGIN); |
| 1003 | |
| 1004 | /* LSP to LPC */ |
| 1005 | lsp_to_lpc(interp_qlsp, ak, st->lpcSize, stack); |
| 1006 | |
| 1007 | /* Calculate reponse ratio between the low and high filter in the middle |
| 1008 | of the band (4000 Hz) */ |
| 1009 | |
| 1010 | st->pi_gain[sub]=LPC_SCALING; |
| 1011 | rh = LPC_SCALING; |
| 1012 | for (i=0;i<st->lpcSize;i+=2) |
| 1013 | { |
| 1014 | rh += ak[i+1] - ak[i]; |
| 1015 | st->pi_gain[sub] += ak[i] + ak[i+1]; |
| 1016 | } |
| 1017 | |
| 1018 | rl = low_pi_gain[sub]; |
| 1019 | #ifdef FIXED_POINT |
| 1020 | filter_ratio=EXTRACT16(SATURATE(PDIV32(SHL32(ADD32(rl,82),7),ADD32(82,rh)),32767)); |
| 1021 | #else |
| 1022 | filter_ratio=(rl+.01)/(rh+.01); |
| 1023 | #endif |
| 1024 | |
| 1025 | SPEEX_MEMSET(exc, 0, st->subframeSize); |
| 1026 | if (!SUBMODE(innovation_unquant)) |
| 1027 | { |
| 1028 | spx_word32_t g; |
| 1029 | int quant; |
| 1030 | |
| 1031 | quant = speex_bits_unpack_unsigned(bits, 5); |
| 1032 | g= spx_exp(MULT16_16(QCONST16(.125f,11),(quant-10))); |
| 1033 | |
| 1034 | g = PDIV32(g, filter_ratio); |
| 1035 | |
| 1036 | for (i=0;i<st->subframeSize;i+=2) |
| 1037 | { |
| 1038 | exc[i]=SHL32(MULT16_32_P15(MULT16_16_Q15(mode->folding_gain,low_innov_alias[offset+i]),SHL32(g,6)),SIG_SHIFT); |
| 1039 | exc[i+1]=NEG32(SHL32(MULT16_32_P15(MULT16_16_Q15(mode->folding_gain,low_innov_alias[offset+i+1]),SHL32(g,6)),SIG_SHIFT)); |
| 1040 | } |
| 1041 | |
| 1042 | } else { |
| 1043 | spx_word16_t gc; |
| 1044 | spx_word32_t scale; |
| 1045 | int qgc = speex_bits_unpack_unsigned(bits, 4); |
| 1046 | |
| 1047 | el = low_exc_rms[sub]; |
| 1048 | gc = MULT16_16_Q15(QCONST16(0.87360,15),gc_quant_bound[qgc]); |
| 1049 | |
| 1050 | if (st->subframeSize==80) |
| 1051 | gc = MULT16_16_P14(QCONST16(1.4142f,14),gc); |
| 1052 | |
| 1053 | scale = SHL32(PDIV32(SHL32(MULT16_16(gc, el),3), filter_ratio),SIG_SHIFT-3); |
| 1054 | SUBMODE(innovation_unquant)(exc, SUBMODE(innovation_params), st->subframeSize, |
| 1055 | bits, stack, &st->seed); |
| 1056 | |
| 1057 | signal_mul(exc,exc,scale,st->subframeSize); |
| 1058 | |
| 1059 | if (SUBMODE(double_codebook)) { |
| 1060 | char *tmp_stack=stack; |
| 1061 | VARDECL(spx_sig_t *innov2); |
| 1062 | ALLOC(innov2, st->subframeSize, spx_sig_t); |
| 1063 | SPEEX_MEMSET(innov2, 0, st->subframeSize); |
| 1064 | SUBMODE(innovation_unquant)(innov2, SUBMODE(innovation_params), st->subframeSize, |
| 1065 | bits, stack, &st->seed); |
| 1066 | signal_mul(innov2, innov2, MULT16_32_P15(QCONST16(0.4f,15),scale), st->subframeSize); |
| 1067 | for (i=0;i<st->subframeSize;i++) |
| 1068 | exc[i] = ADD32(exc[i],innov2[i]); |
| 1069 | stack = tmp_stack; |
| 1070 | } |
| 1071 | |
| 1072 | } |
| 1073 | |
| 1074 | if (st->innov_save) |
| 1075 | { |
| 1076 | for (i=0;i<st->subframeSize;i++) |
| 1077 | innov_save[2*i]=EXTRACT16(PSHR32(exc[i],SIG_SHIFT)); |
| 1078 | } |
| 1079 | |
| 1080 | iir_mem16(st->excBuf, st->interp_qlpc, sp, st->subframeSize, st->lpcSize, |
| 1081 | st->mem_sp, stack); |
| 1082 | for (i=0;i<st->subframeSize;i++) |
| 1083 | st->excBuf[i]=EXTRACT16(PSHR32(exc[i],SIG_SHIFT)); |
| 1084 | for (i=0;i<st->lpcSize;i++) |
| 1085 | st->interp_qlpc[i] = ak[i]; |
| 1086 | st->exc_rms[sub] = compute_rms16(st->excBuf, st->subframeSize); |
| 1087 | exc_ener_sum = ADD32(exc_ener_sum, DIV32(MULT16_16(st->exc_rms[sub],st->exc_rms[sub]), st->nbSubframes)); |
| 1088 | } |
| 1089 | st->last_ener = spx_sqrt(exc_ener_sum); |
| 1090 | |
| 1091 | qmf_synth(out, out+st->frame_size, h0, out, st->full_frame_size, QMF_ORDER, st->g0_mem, st->g1_mem, stack); |
| 1092 | for (i=0;i<st->lpcSize;i++) |
| 1093 | st->old_qlsp[i] = qlsp[i]; |
| 1094 | |
| 1095 | st->first=0; |
| 1096 | |
| 1097 | return 0; |
| 1098 | } |
| 1099 | |
| 1100 | |
| 1101 | int sb_encoder_ctl(void *state, int request, void *ptr) |
| 1102 | { |
| 1103 | SBEncState *st; |
| 1104 | st=(SBEncState*)state; |
| 1105 | switch(request) |
| 1106 | { |
| 1107 | case SPEEX_GET_FRAME_SIZE: |
| 1108 | (*(spx_int32_t*)ptr) = st->full_frame_size; |
| 1109 | break; |
| 1110 | case SPEEX_SET_HIGH_MODE: |
| 1111 | st->submodeSelect = st->submodeID = (*(spx_int32_t*)ptr); |
| 1112 | break; |
| 1113 | case SPEEX_SET_LOW_MODE: |
| 1114 | speex_encoder_ctl(st->st_low, SPEEX_SET_LOW_MODE, ptr); |
| 1115 | break; |
| 1116 | case SPEEX_SET_DTX: |
| 1117 | speex_encoder_ctl(st->st_low, SPEEX_SET_DTX, ptr); |
| 1118 | break; |
| 1119 | case SPEEX_GET_DTX: |
| 1120 | speex_encoder_ctl(st->st_low, SPEEX_GET_DTX, ptr); |
| 1121 | break; |
| 1122 | case SPEEX_GET_LOW_MODE: |
| 1123 | speex_encoder_ctl(st->st_low, SPEEX_GET_LOW_MODE, ptr); |
| 1124 | break; |
| 1125 | case SPEEX_SET_MODE: |
| 1126 | speex_encoder_ctl(st, SPEEX_SET_QUALITY, ptr); |
| 1127 | break; |
| 1128 | #ifndef DISABLE_VBR |
| 1129 | case SPEEX_SET_VBR: |
| 1130 | st->vbr_enabled = (*(spx_int32_t*)ptr); |
| 1131 | speex_encoder_ctl(st->st_low, SPEEX_SET_VBR, ptr); |
| 1132 | break; |
| 1133 | case SPEEX_GET_VBR: |
| 1134 | (*(spx_int32_t*)ptr) = st->vbr_enabled; |
| 1135 | break; |
| 1136 | case SPEEX_SET_VAD: |
| 1137 | st->vad_enabled = (*(spx_int32_t*)ptr); |
| 1138 | speex_encoder_ctl(st->st_low, SPEEX_SET_VAD, ptr); |
| 1139 | break; |
| 1140 | case SPEEX_GET_VAD: |
| 1141 | (*(spx_int32_t*)ptr) = st->vad_enabled; |
| 1142 | break; |
| 1143 | #endif /* #ifndef DISABLE_VBR */ |
| 1144 | #if !defined(DISABLE_VBR) && !defined(DISABLE_FLOAT_API) |
| 1145 | case SPEEX_SET_VBR_QUALITY: |
| 1146 | { |
| 1147 | spx_int32_t q; |
| 1148 | float qual = (*(float*)ptr)+.6; |
| 1149 | st->vbr_quality = (*(float*)ptr); |
| 1150 | if (qual>10) |
| 1151 | qual=10; |
| 1152 | q=(int)floor(.5+*(float*)ptr); |
| 1153 | if (q>10) |
| 1154 | q=10; |
| 1155 | speex_encoder_ctl(st->st_low, SPEEX_SET_VBR_QUALITY, &qual); |
| 1156 | speex_encoder_ctl(state, SPEEX_SET_QUALITY, &q); |
| 1157 | break; |
| 1158 | } |
| 1159 | case SPEEX_GET_VBR_QUALITY: |
| 1160 | (*(float*)ptr) = st->vbr_quality; |
| 1161 | break; |
| 1162 | #endif /* #if !defined(DISABLE_VBR) && !defined(DISABLE_FLOAT_API) */ |
| 1163 | #ifndef DISABLE_VBR |
| 1164 | case SPEEX_SET_ABR: |
| 1165 | st->abr_enabled = (*(spx_int32_t*)ptr); |
| 1166 | st->vbr_enabled = st->abr_enabled!=0; |
| 1167 | speex_encoder_ctl(st->st_low, SPEEX_SET_VBR, &st->vbr_enabled); |
| 1168 | if (st->vbr_enabled) |
| 1169 | { |
| 1170 | spx_int32_t i=10, rate, target; |
| 1171 | float vbr_qual; |
| 1172 | target = (*(spx_int32_t*)ptr); |
| 1173 | while (i>=0) |
| 1174 | { |
| 1175 | speex_encoder_ctl(st, SPEEX_SET_QUALITY, &i); |
| 1176 | speex_encoder_ctl(st, SPEEX_GET_BITRATE, &rate); |
| 1177 | if (rate <= target) |
| 1178 | break; |
| 1179 | i--; |
| 1180 | } |
| 1181 | vbr_qual=i; |
| 1182 | if (vbr_qual<0) |
| 1183 | vbr_qual=0; |
| 1184 | speex_encoder_ctl(st, SPEEX_SET_VBR_QUALITY, &vbr_qual); |
| 1185 | st->abr_count=0; |
| 1186 | st->abr_drift=0; |
| 1187 | st->abr_drift2=0; |
| 1188 | } |
| 1189 | |
| 1190 | break; |
| 1191 | case SPEEX_GET_ABR: |
| 1192 | (*(spx_int32_t*)ptr) = st->abr_enabled; |
| 1193 | break; |
| 1194 | #endif /* #ifndef DISABLE_VBR */ |
| 1195 | |
| 1196 | case SPEEX_SET_QUALITY: |
| 1197 | { |
| 1198 | spx_int32_t nb_qual; |
| 1199 | int quality = (*(spx_int32_t*)ptr); |
| 1200 | if (quality < 0) |
| 1201 | quality = 0; |
| 1202 | if (quality > 10) |
| 1203 | quality = 10; |
| 1204 | st->submodeSelect = st->submodeID = ((const SpeexSBMode*)(st->mode->mode))->quality_map[quality]; |
| 1205 | nb_qual = ((const SpeexSBMode*)(st->mode->mode))->low_quality_map[quality]; |
| 1206 | speex_encoder_ctl(st->st_low, SPEEX_SET_MODE, &nb_qual); |
| 1207 | } |
| 1208 | break; |
| 1209 | case SPEEX_SET_COMPLEXITY: |
| 1210 | speex_encoder_ctl(st->st_low, SPEEX_SET_COMPLEXITY, ptr); |
| 1211 | st->complexity = (*(spx_int32_t*)ptr); |
| 1212 | if (st->complexity<1) |
| 1213 | st->complexity=1; |
| 1214 | break; |
| 1215 | case SPEEX_GET_COMPLEXITY: |
| 1216 | (*(spx_int32_t*)ptr) = st->complexity; |
| 1217 | break; |
| 1218 | case SPEEX_SET_BITRATE: |
| 1219 | { |
| 1220 | spx_int32_t i=10; |
| 1221 | spx_int32_t rate, target; |
| 1222 | target = (*(spx_int32_t*)ptr); |
| 1223 | while (i>=0) |
| 1224 | { |
| 1225 | speex_encoder_ctl(st, SPEEX_SET_QUALITY, &i); |
| 1226 | speex_encoder_ctl(st, SPEEX_GET_BITRATE, &rate); |
| 1227 | if (rate <= target) |
| 1228 | break; |
| 1229 | i--; |
| 1230 | } |
| 1231 | } |
| 1232 | break; |
| 1233 | case SPEEX_GET_BITRATE: |
| 1234 | speex_encoder_ctl(st->st_low, request, ptr); |
| 1235 | /*fprintf (stderr, "before: %d\n", (*(int*)ptr));*/ |
| 1236 | if (st->submodes[st->submodeID]) |
| 1237 | (*(spx_int32_t*)ptr) += st->sampling_rate*SUBMODE(bits_per_frame)/st->full_frame_size; |
| 1238 | else |
| 1239 | (*(spx_int32_t*)ptr) += st->sampling_rate*(SB_SUBMODE_BITS+1)/st->full_frame_size; |
| 1240 | /*fprintf (stderr, "after: %d\n", (*(int*)ptr));*/ |
| 1241 | break; |
| 1242 | case SPEEX_SET_SAMPLING_RATE: |
| 1243 | { |
| 1244 | spx_int32_t tmp=(*(spx_int32_t*)ptr); |
| 1245 | st->sampling_rate = tmp; |
| 1246 | tmp>>=1; |
| 1247 | speex_encoder_ctl(st->st_low, SPEEX_SET_SAMPLING_RATE, &tmp); |
| 1248 | } |
| 1249 | break; |
| 1250 | case SPEEX_GET_SAMPLING_RATE: |
| 1251 | (*(spx_int32_t*)ptr)=st->sampling_rate; |
| 1252 | break; |
| 1253 | case SPEEX_RESET_STATE: |
| 1254 | { |
| 1255 | int i; |
| 1256 | st->first = 1; |
| 1257 | for (i=0;i<st->lpcSize;i++) |
| 1258 | st->old_lsp[i]= DIV32(MULT16_16(QCONST16(3.1415927f, LSP_SHIFT), i+1), st->lpcSize+1); |
| 1259 | for (i=0;i<st->lpcSize;i++) |
| 1260 | st->mem_sw[i]=st->mem_sp[i]=st->mem_sp2[i]=0; |
| 1261 | for (i=0;i<QMF_ORDER;i++) |
| 1262 | st->h0_mem[i]=st->h1_mem[i]=0; |
| 1263 | } |
| 1264 | break; |
| 1265 | case SPEEX_SET_SUBMODE_ENCODING: |
| 1266 | st->encode_submode = (*(spx_int32_t*)ptr); |
| 1267 | speex_encoder_ctl(st->st_low, SPEEX_SET_SUBMODE_ENCODING, ptr); |
| 1268 | break; |
| 1269 | case SPEEX_GET_SUBMODE_ENCODING: |
| 1270 | (*(spx_int32_t*)ptr) = st->encode_submode; |
| 1271 | break; |
| 1272 | case SPEEX_GET_LOOKAHEAD: |
| 1273 | speex_encoder_ctl(st->st_low, SPEEX_GET_LOOKAHEAD, ptr); |
| 1274 | (*(spx_int32_t*)ptr) = 2*(*(spx_int32_t*)ptr) + QMF_ORDER - 1; |
| 1275 | break; |
| 1276 | case SPEEX_SET_PLC_TUNING: |
| 1277 | speex_encoder_ctl(st->st_low, SPEEX_SET_PLC_TUNING, ptr); |
| 1278 | break; |
| 1279 | case SPEEX_GET_PLC_TUNING: |
| 1280 | speex_encoder_ctl(st->st_low, SPEEX_GET_PLC_TUNING, ptr); |
| 1281 | break; |
| 1282 | #ifndef DISABLE_VBR |
| 1283 | case SPEEX_SET_VBR_MAX_BITRATE: |
| 1284 | { |
| 1285 | st->vbr_max = (*(spx_int32_t*)ptr); |
| 1286 | if (SPEEX_SET_VBR_MAX_BITRATE<1) |
| 1287 | { |
| 1288 | speex_encoder_ctl(st->st_low, SPEEX_SET_VBR_MAX_BITRATE, &st->vbr_max); |
| 1289 | st->vbr_max_high = 17600; |
| 1290 | } else { |
| 1291 | spx_int32_t low_rate; |
| 1292 | if (st->vbr_max >= 42200) |
| 1293 | { |
| 1294 | st->vbr_max_high = 17600; |
| 1295 | } else if (st->vbr_max >= 27800) |
| 1296 | { |
| 1297 | st->vbr_max_high = 9600; |
| 1298 | } else if (st->vbr_max > 20600) |
| 1299 | { |
| 1300 | st->vbr_max_high = 5600; |
| 1301 | } else { |
| 1302 | st->vbr_max_high = 1800; |
| 1303 | } |
| 1304 | if (st->subframeSize==80) |
| 1305 | st->vbr_max_high = 1800; |
| 1306 | low_rate = st->vbr_max - st->vbr_max_high; |
| 1307 | speex_encoder_ctl(st->st_low, SPEEX_SET_VBR_MAX_BITRATE, &low_rate); |
| 1308 | } |
| 1309 | } |
| 1310 | break; |
| 1311 | case SPEEX_GET_VBR_MAX_BITRATE: |
| 1312 | (*(spx_int32_t*)ptr) = st->vbr_max; |
| 1313 | break; |
| 1314 | #endif /* #ifndef DISABLE_VBR */ |
| 1315 | case SPEEX_SET_HIGHPASS: |
| 1316 | speex_encoder_ctl(st->st_low, SPEEX_SET_HIGHPASS, ptr); |
| 1317 | break; |
| 1318 | case SPEEX_GET_HIGHPASS: |
| 1319 | speex_encoder_ctl(st->st_low, SPEEX_GET_HIGHPASS, ptr); |
| 1320 | break; |
| 1321 | |
| 1322 | |
| 1323 | /* This is all internal stuff past this point */ |
| 1324 | case SPEEX_GET_PI_GAIN: |
| 1325 | { |
| 1326 | int i; |
| 1327 | spx_word32_t *g = (spx_word32_t*)ptr; |
| 1328 | for (i=0;i<st->nbSubframes;i++) |
| 1329 | g[i]=st->pi_gain[i]; |
| 1330 | } |
| 1331 | break; |
| 1332 | case SPEEX_GET_EXC: |
| 1333 | { |
| 1334 | int i; |
| 1335 | for (i=0;i<st->nbSubframes;i++) |
| 1336 | ((spx_word16_t*)ptr)[i] = st->exc_rms[i]; |
| 1337 | } |
| 1338 | break; |
| 1339 | #ifndef DISABLE_VBR |
| 1340 | case SPEEX_GET_RELATIVE_QUALITY: |
| 1341 | (*(float*)ptr)=st->relative_quality; |
| 1342 | break; |
| 1343 | #endif /* #ifndef DISABLE_VBR */ |
| 1344 | case SPEEX_SET_INNOVATION_SAVE: |
| 1345 | st->innov_rms_save = (spx_word16_t*)ptr; |
| 1346 | break; |
| 1347 | case SPEEX_SET_WIDEBAND: |
| 1348 | speex_encoder_ctl(st->st_low, SPEEX_SET_WIDEBAND, ptr); |
| 1349 | break; |
| 1350 | case SPEEX_GET_STACK: |
| 1351 | *((char**)ptr) = st->stack; |
| 1352 | break; |
| 1353 | default: |
| 1354 | speex_warning_int("Unknown nb_ctl request: ", request); |
| 1355 | return -1; |
| 1356 | } |
| 1357 | return 0; |
| 1358 | } |
| 1359 | |
| 1360 | int sb_decoder_ctl(void *state, int request, void *ptr) |
| 1361 | { |
| 1362 | SBDecState *st; |
| 1363 | st=(SBDecState*)state; |
| 1364 | switch(request) |
| 1365 | { |
| 1366 | case SPEEX_SET_HIGH_MODE: |
| 1367 | st->submodeID = (*(spx_int32_t*)ptr); |
| 1368 | break; |
| 1369 | case SPEEX_SET_LOW_MODE: |
| 1370 | speex_decoder_ctl(st->st_low, SPEEX_SET_LOW_MODE, ptr); |
| 1371 | break; |
| 1372 | case SPEEX_GET_LOW_MODE: |
| 1373 | speex_decoder_ctl(st->st_low, SPEEX_GET_LOW_MODE, ptr); |
| 1374 | break; |
| 1375 | case SPEEX_GET_FRAME_SIZE: |
| 1376 | (*(spx_int32_t*)ptr) = st->full_frame_size; |
| 1377 | break; |
| 1378 | case SPEEX_SET_ENH: |
| 1379 | speex_decoder_ctl(st->st_low, request, ptr); |
| 1380 | st->lpc_enh_enabled = *((spx_int32_t*)ptr); |
| 1381 | break; |
| 1382 | case SPEEX_GET_ENH: |
| 1383 | *((spx_int32_t*)ptr) = st->lpc_enh_enabled; |
| 1384 | break; |
| 1385 | case SPEEX_SET_MODE: |
| 1386 | case SPEEX_SET_QUALITY: |
| 1387 | { |
| 1388 | spx_int32_t nb_qual; |
| 1389 | int quality = (*(spx_int32_t*)ptr); |
| 1390 | if (quality < 0) |
| 1391 | quality = 0; |
| 1392 | if (quality > 10) |
| 1393 | quality = 10; |
| 1394 | st->submodeID = ((const SpeexSBMode*)(st->mode->mode))->quality_map[quality]; |
| 1395 | nb_qual = ((const SpeexSBMode*)(st->mode->mode))->low_quality_map[quality]; |
| 1396 | speex_decoder_ctl(st->st_low, SPEEX_SET_MODE, &nb_qual); |
| 1397 | } |
| 1398 | break; |
| 1399 | case SPEEX_GET_BITRATE: |
| 1400 | speex_decoder_ctl(st->st_low, request, ptr); |
| 1401 | if (st->submodes[st->submodeID]) |
| 1402 | (*(spx_int32_t*)ptr) += st->sampling_rate*SUBMODE(bits_per_frame)/st->full_frame_size; |
| 1403 | else |
| 1404 | (*(spx_int32_t*)ptr) += st->sampling_rate*(SB_SUBMODE_BITS+1)/st->full_frame_size; |
| 1405 | break; |
| 1406 | case SPEEX_SET_SAMPLING_RATE: |
| 1407 | { |
| 1408 | spx_int32_t tmp=(*(spx_int32_t*)ptr); |
| 1409 | st->sampling_rate = tmp; |
| 1410 | tmp>>=1; |
| 1411 | speex_decoder_ctl(st->st_low, SPEEX_SET_SAMPLING_RATE, &tmp); |
| 1412 | } |
| 1413 | break; |
| 1414 | case SPEEX_GET_SAMPLING_RATE: |
| 1415 | (*(spx_int32_t*)ptr)=st->sampling_rate; |
| 1416 | break; |
| 1417 | case SPEEX_SET_HANDLER: |
| 1418 | speex_decoder_ctl(st->st_low, SPEEX_SET_HANDLER, ptr); |
| 1419 | break; |
| 1420 | case SPEEX_SET_USER_HANDLER: |
| 1421 | speex_decoder_ctl(st->st_low, SPEEX_SET_USER_HANDLER, ptr); |
| 1422 | break; |
| 1423 | case SPEEX_RESET_STATE: |
| 1424 | { |
| 1425 | int i; |
| 1426 | for (i=0;i<2*st->lpcSize;i++) |
| 1427 | st->mem_sp[i]=0; |
| 1428 | for (i=0;i<QMF_ORDER;i++) |
| 1429 | st->g0_mem[i]=st->g1_mem[i]=0; |
| 1430 | st->last_ener=0; |
| 1431 | } |
| 1432 | break; |
| 1433 | case SPEEX_SET_SUBMODE_ENCODING: |
| 1434 | st->encode_submode = (*(spx_int32_t*)ptr); |
| 1435 | speex_decoder_ctl(st->st_low, SPEEX_SET_SUBMODE_ENCODING, ptr); |
| 1436 | break; |
| 1437 | case SPEEX_GET_SUBMODE_ENCODING: |
| 1438 | (*(spx_int32_t*)ptr) = st->encode_submode; |
| 1439 | break; |
| 1440 | case SPEEX_GET_LOOKAHEAD: |
| 1441 | speex_decoder_ctl(st->st_low, SPEEX_GET_LOOKAHEAD, ptr); |
| 1442 | (*(spx_int32_t*)ptr) = 2*(*(spx_int32_t*)ptr); |
| 1443 | break; |
| 1444 | case SPEEX_SET_HIGHPASS: |
| 1445 | speex_decoder_ctl(st->st_low, SPEEX_SET_HIGHPASS, ptr); |
| 1446 | break; |
| 1447 | case SPEEX_GET_HIGHPASS: |
| 1448 | speex_decoder_ctl(st->st_low, SPEEX_GET_HIGHPASS, ptr); |
| 1449 | break; |
| 1450 | case SPEEX_GET_ACTIVITY: |
| 1451 | speex_decoder_ctl(st->st_low, SPEEX_GET_ACTIVITY, ptr); |
| 1452 | break; |
| 1453 | case SPEEX_GET_PI_GAIN: |
| 1454 | { |
| 1455 | int i; |
| 1456 | spx_word32_t *g = (spx_word32_t*)ptr; |
| 1457 | for (i=0;i<st->nbSubframes;i++) |
| 1458 | g[i]=st->pi_gain[i]; |
| 1459 | } |
| 1460 | break; |
| 1461 | case SPEEX_GET_EXC: |
| 1462 | { |
| 1463 | int i; |
| 1464 | for (i=0;i<st->nbSubframes;i++) |
| 1465 | ((spx_word16_t*)ptr)[i] = st->exc_rms[i]; |
| 1466 | } |
| 1467 | break; |
| 1468 | case SPEEX_GET_DTX_STATUS: |
| 1469 | speex_decoder_ctl(st->st_low, SPEEX_GET_DTX_STATUS, ptr); |
| 1470 | break; |
| 1471 | case SPEEX_SET_INNOVATION_SAVE: |
| 1472 | st->innov_save = (spx_word16_t*)ptr; |
| 1473 | break; |
| 1474 | case SPEEX_SET_WIDEBAND: |
| 1475 | speex_decoder_ctl(st->st_low, SPEEX_SET_WIDEBAND, ptr); |
| 1476 | break; |
| 1477 | case SPEEX_GET_STACK: |
| 1478 | *((char**)ptr) = st->stack; |
| 1479 | break; |
| 1480 | default: |
| 1481 | speex_warning_int("Unknown nb_ctl request: ", request); |
| 1482 | return -1; |
| 1483 | } |
| 1484 | return 0; |
| 1485 | } |
| 1486 | |
| 1487 | #endif |
| 1488 | |