Tristan Matthews | 0a329cc | 2013-07-17 13:20:14 -0400 | [diff] [blame] | 1 | /* Copyright (C) 2002 Jean-Marc Valin */ |
| 2 | /** |
| 3 | @file quant_lsp.h |
| 4 | @brief LSP vector quantization |
| 5 | */ |
| 6 | /* |
| 7 | Redistribution and use in source and binary forms, with or without |
| 8 | modification, are permitted provided that the following conditions |
| 9 | are met: |
| 10 | |
| 11 | - Redistributions of source code must retain the above copyright |
| 12 | notice, this list of conditions and the following disclaimer. |
| 13 | |
| 14 | - Redistributions in binary form must reproduce the above copyright |
| 15 | notice, this list of conditions and the following disclaimer in the |
| 16 | documentation and/or other materials provided with the distribution. |
| 17 | |
| 18 | - Neither the name of the Xiph.org Foundation nor the names of its |
| 19 | contributors may be used to endorse or promote products derived from |
| 20 | this software without specific prior written permission. |
| 21 | |
| 22 | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 23 | ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 24 | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| 25 | A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR |
| 26 | CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| 27 | EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| 28 | PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
| 29 | PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF |
| 30 | LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING |
| 31 | NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
| 32 | SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 33 | */ |
| 34 | |
| 35 | #ifndef QUANT_LSP_H |
| 36 | #define QUANT_LSP_H |
| 37 | |
| 38 | #include <speex/speex_bits.h> |
| 39 | #include "arch.h" |
| 40 | |
| 41 | #define MAX_LSP_SIZE 20 |
| 42 | |
| 43 | #define NB_CDBK_SIZE 64 |
| 44 | #define NB_CDBK_SIZE_LOW1 64 |
| 45 | #define NB_CDBK_SIZE_LOW2 64 |
| 46 | #define NB_CDBK_SIZE_HIGH1 64 |
| 47 | #define NB_CDBK_SIZE_HIGH2 64 |
| 48 | |
| 49 | /*Narrowband codebooks*/ |
| 50 | extern const signed char cdbk_nb[]; |
| 51 | extern const signed char cdbk_nb_low1[]; |
| 52 | extern const signed char cdbk_nb_low2[]; |
| 53 | extern const signed char cdbk_nb_high1[]; |
| 54 | extern const signed char cdbk_nb_high2[]; |
| 55 | |
| 56 | /* Quantizes narrowband LSPs with 30 bits */ |
| 57 | void lsp_quant_nb(spx_lsp_t *lsp, spx_lsp_t *qlsp, int order, SpeexBits *bits); |
| 58 | |
| 59 | /* Decodes quantized narrowband LSPs */ |
| 60 | void lsp_unquant_nb(spx_lsp_t *lsp, int order, SpeexBits *bits); |
| 61 | |
| 62 | /* Quantizes low bit-rate narrowband LSPs with 18 bits */ |
| 63 | void lsp_quant_lbr(spx_lsp_t *lsp, spx_lsp_t *qlsp, int order, SpeexBits *bits); |
| 64 | |
| 65 | /* Decodes quantized low bit-rate narrowband LSPs */ |
| 66 | void lsp_unquant_lbr(spx_lsp_t *lsp, int order, SpeexBits *bits); |
| 67 | |
| 68 | /* Quantizes high-band LSPs with 12 bits */ |
| 69 | void lsp_quant_high(spx_lsp_t *lsp, spx_lsp_t *qlsp, int order, SpeexBits *bits); |
| 70 | |
| 71 | /* Decodes high-band LSPs */ |
| 72 | void lsp_unquant_high(spx_lsp_t *lsp, int order, SpeexBits *bits); |
| 73 | |
| 74 | #endif |