| /* Copyright (C) 2002 Jean-Marc Valin */ |
| /** |
| @file quant_lsp.h |
| @brief LSP vector quantization |
| */ |
| /* |
| 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. |
| */ |
| |
| #ifndef QUANT_LSP_H |
| #define QUANT_LSP_H |
| |
| #include <speex/speex_bits.h> |
| #include "arch.h" |
| |
| #define MAX_LSP_SIZE 20 |
| |
| #define NB_CDBK_SIZE 64 |
| #define NB_CDBK_SIZE_LOW1 64 |
| #define NB_CDBK_SIZE_LOW2 64 |
| #define NB_CDBK_SIZE_HIGH1 64 |
| #define NB_CDBK_SIZE_HIGH2 64 |
| |
| /*Narrowband codebooks*/ |
| extern const signed char cdbk_nb[]; |
| extern const signed char cdbk_nb_low1[]; |
| extern const signed char cdbk_nb_low2[]; |
| extern const signed char cdbk_nb_high1[]; |
| extern const signed char cdbk_nb_high2[]; |
| |
| /* Quantizes narrowband LSPs with 30 bits */ |
| void lsp_quant_nb(spx_lsp_t *lsp, spx_lsp_t *qlsp, int order, SpeexBits *bits); |
| |
| /* Decodes quantized narrowband LSPs */ |
| void lsp_unquant_nb(spx_lsp_t *lsp, int order, SpeexBits *bits); |
| |
| /* Quantizes low bit-rate narrowband LSPs with 18 bits */ |
| void lsp_quant_lbr(spx_lsp_t *lsp, spx_lsp_t *qlsp, int order, SpeexBits *bits); |
| |
| /* Decodes quantized low bit-rate narrowband LSPs */ |
| void lsp_unquant_lbr(spx_lsp_t *lsp, int order, SpeexBits *bits); |
| |
| /* Quantizes high-band LSPs with 12 bits */ |
| void lsp_quant_high(spx_lsp_t *lsp, spx_lsp_t *qlsp, int order, SpeexBits *bits); |
| |
| /* Decodes high-band LSPs */ |
| void lsp_unquant_high(spx_lsp_t *lsp, int order, SpeexBits *bits); |
| |
| #endif |