| /* Copyright (C) 2002-2007 Jean-Marc Valin |
| File: modes.c |
| |
| Describes the wideband modes of the codec |
| |
| Redistribution and use in source and binary forms, with or without |
| modification, are permitted provided that the following conditions |
| are met: |
| |
| - Redistributions of source code must retain the above copyright |
| notice, this list of conditions and the following disclaimer. |
| |
| - Redistributions in binary form must reproduce the above copyright |
| notice, this list of conditions and the following disclaimer in the |
| documentation and/or other materials provided with the distribution. |
| |
| - Neither the name of the Xiph.org Foundation nor the names of its |
| contributors may be used to endorse or promote products derived from |
| this software without specific prior written permission. |
| |
| THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR |
| CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
| PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF |
| LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING |
| NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
| SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| |
| */ |
| |
| #ifdef HAVE_CONFIG_H |
| #include "config.h" |
| #endif |
| |
| #include "modes.h" |
| #include "ltp.h" |
| #include "quant_lsp.h" |
| #include "cb_search.h" |
| #include "sb_celp.h" |
| #include "nb_celp.h" |
| #include "vbr.h" |
| #include "arch.h" |
| #include <math.h> |
| #include "os_support.h" |
| |
| |
| #ifndef NULL |
| #define NULL 0 |
| #endif |
| |
| EXPORT const SpeexMode * const speex_mode_list[SPEEX_NB_MODES] = {&speex_nb_mode, &speex_wb_mode, &speex_uwb_mode}; |
| |
| extern const signed char hexc_table[]; |
| extern const signed char hexc_10_32_table[]; |
| |
| #ifndef DISABLE_WIDEBAND |
| |
| /* Split-VQ innovation for high-band wideband */ |
| static const split_cb_params split_cb_high = { |
| 8, /*subvect_size*/ |
| 5, /*nb_subvect*/ |
| hexc_table, /*shape_cb*/ |
| 7, /*shape_bits*/ |
| 1, |
| }; |
| |
| |
| /* Split-VQ innovation for high-band wideband */ |
| static const split_cb_params split_cb_high_lbr = { |
| 10, /*subvect_size*/ |
| 4, /*nb_subvect*/ |
| hexc_10_32_table, /*shape_cb*/ |
| 5, /*shape_bits*/ |
| 0, |
| }; |
| |
| #endif |
| |
| |
| static const SpeexSubmode wb_submode1 = { |
| 0, |
| 0, |
| 1, |
| 0, |
| /*LSP quantization*/ |
| lsp_quant_high, |
| lsp_unquant_high, |
| /*Pitch quantization*/ |
| NULL, |
| NULL, |
| NULL, |
| /*No innovation quantization*/ |
| NULL, |
| NULL, |
| NULL, |
| -1, |
| 36 |
| }; |
| |
| |
| static const SpeexSubmode wb_submode2 = { |
| 0, |
| 0, |
| 1, |
| 0, |
| /*LSP quantization*/ |
| lsp_quant_high, |
| lsp_unquant_high, |
| /*Pitch quantization*/ |
| NULL, |
| NULL, |
| NULL, |
| /*Innovation quantization*/ |
| split_cb_search_shape_sign, |
| split_cb_shape_sign_unquant, |
| #ifdef DISABLE_WIDEBAND |
| NULL, |
| #else |
| &split_cb_high_lbr, |
| #endif |
| -1, |
| 112 |
| }; |
| |
| |
| static const SpeexSubmode wb_submode3 = { |
| 0, |
| 0, |
| 1, |
| 0, |
| /*LSP quantization*/ |
| lsp_quant_high, |
| lsp_unquant_high, |
| /*Pitch quantization*/ |
| NULL, |
| NULL, |
| NULL, |
| /*Innovation quantization*/ |
| split_cb_search_shape_sign, |
| split_cb_shape_sign_unquant, |
| #ifdef DISABLE_WIDEBAND |
| NULL, |
| #else |
| &split_cb_high, |
| #endif |
| -1, |
| 192 |
| }; |
| |
| static const SpeexSubmode wb_submode4 = { |
| 0, |
| 0, |
| 1, |
| 1, |
| /*LSP quantization*/ |
| lsp_quant_high, |
| lsp_unquant_high, |
| /*Pitch quantization*/ |
| NULL, |
| NULL, |
| NULL, |
| /*Innovation quantization*/ |
| split_cb_search_shape_sign, |
| split_cb_shape_sign_unquant, |
| #ifdef DISABLE_WIDEBAND |
| NULL, |
| #else |
| &split_cb_high, |
| #endif |
| -1, |
| 352 |
| }; |
| |
| |
| /* Split-band wideband CELP mode*/ |
| static const SpeexSBMode sb_wb_mode = { |
| &speex_nb_mode, |
| 160, /*frameSize*/ |
| 40, /*subframeSize*/ |
| 8, /*lpcSize*/ |
| #ifdef FIXED_POINT |
| 29491, 19661, /* gamma1, gamma2 */ |
| #else |
| 0.9, 0.6, /* gamma1, gamma2 */ |
| #endif |
| QCONST16(.0002,15), /*lpc_floor*/ |
| QCONST16(0.9f,15), |
| {NULL, &wb_submode1, &wb_submode2, &wb_submode3, &wb_submode4, NULL, NULL, NULL}, |
| 3, |
| {1, 8, 2, 3, 4, 5, 5, 6, 6, 7, 7}, |
| {1, 1, 1, 1, 1, 1, 2, 2, 3, 3, 4}, |
| #ifndef DISABLE_VBR |
| vbr_hb_thresh, |
| #endif |
| 5 |
| }; |
| |
| |
| EXPORT const SpeexMode speex_wb_mode = { |
| &sb_wb_mode, |
| wb_mode_query, |
| "wideband (sub-band CELP)", |
| 1, |
| 4, |
| &sb_encoder_init, |
| &sb_encoder_destroy, |
| &sb_encode, |
| &sb_decoder_init, |
| &sb_decoder_destroy, |
| &sb_decode, |
| &sb_encoder_ctl, |
| &sb_decoder_ctl, |
| }; |
| |
| |
| |
| /* "Ultra-wideband" mode stuff */ |
| |
| |
| |
| /* Split-band "ultra-wideband" (32 kbps) CELP mode*/ |
| static const SpeexSBMode sb_uwb_mode = { |
| &speex_wb_mode, |
| 320, /*frameSize*/ |
| 80, /*subframeSize*/ |
| 8, /*lpcSize*/ |
| #ifdef FIXED_POINT |
| 29491, 19661, /* gamma1, gamma2 */ |
| #else |
| 0.9, 0.6, /* gamma1, gamma2 */ |
| #endif |
| QCONST16(.0002,15), /*lpc_floor*/ |
| QCONST16(0.7f,15), |
| {NULL, &wb_submode1, NULL, NULL, NULL, NULL, NULL, NULL}, |
| 1, |
| {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10}, |
| {0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1}, |
| #ifndef DISABLE_VBR |
| vbr_uhb_thresh, |
| #endif |
| 2 |
| }; |
| |
| int wb_mode_query(const void *mode, int request, void *ptr) |
| { |
| const SpeexSBMode *m = (const SpeexSBMode*)mode; |
| |
| switch (request) |
| { |
| case SPEEX_MODE_FRAME_SIZE: |
| *((int*)ptr)=2*m->frameSize; |
| break; |
| case SPEEX_SUBMODE_BITS_PER_FRAME: |
| if (*((int*)ptr)==0) |
| *((int*)ptr) = SB_SUBMODE_BITS+1; |
| else if (m->submodes[*((int*)ptr)]==NULL) |
| *((int*)ptr) = -1; |
| else |
| *((int*)ptr) = m->submodes[*((int*)ptr)]->bits_per_frame; |
| break; |
| default: |
| speex_warning_int("Unknown wb_mode_query request: ", request); |
| return -1; |
| } |
| return 0; |
| } |
| |
| |
| EXPORT const SpeexMode speex_uwb_mode = { |
| &sb_uwb_mode, |
| wb_mode_query, |
| "ultra-wideband (sub-band CELP)", |
| 2, |
| 4, |
| &sb_encoder_init, |
| &sb_encoder_destroy, |
| &sb_encode, |
| &sb_decoder_init, |
| &sb_decoder_destroy, |
| &sb_decode, |
| &sb_encoder_ctl, |
| &sb_decoder_ctl, |
| }; |
| |
| /* We have defined speex_lib_get_mode() as a macro in speex.h */ |
| #undef speex_lib_get_mode |
| |
| EXPORT const SpeexMode * speex_lib_get_mode (int mode) |
| { |
| if (mode < 0 || mode >= SPEEX_NB_MODES) return NULL; |
| |
| return speex_mode_list[mode]; |
| } |
| |
| |
| |