00001 /* Copyright (C) 2002 Jean-Marc Valin 00002 File: quant_lsp.h 00003 LSP vector quantization 00004 00005 Redistribution and use in source and binary forms, with or without 00006 modification, are permitted provided that the following conditions 00007 are met: 00008 00009 - Redistributions of source code must retain the above copyright 00010 notice, this list of conditions and the following disclaimer. 00011 00012 - Redistributions in binary form must reproduce the above copyright 00013 notice, this list of conditions and the following disclaimer in the 00014 documentation and/or other materials provided with the distribution. 00015 00016 - Neither the name of the Xiph.org Foundation nor the names of its 00017 contributors may be used to endorse or promote products derived from 00018 this software without specific prior written permission. 00019 00020 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 00021 ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 00022 LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 00023 A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR 00024 CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 00025 EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 00026 PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 00027 PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 00028 LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 00029 NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 00030 SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 00031 */ 00032 00033 #ifndef QUANT_LSP_H 00034 #define QUANT_LSP_H 00035 00036 #include "speex_bits.h" 00037 00038 #define MAX_LSP_SIZE 20 00039 00040 #define NB_CDBK_SIZE 64 00041 #define NB_CDBK_SIZE_LOW1 64 00042 #define NB_CDBK_SIZE_LOW2 64 00043 #define NB_CDBK_SIZE_HIGH1 64 00044 #define NB_CDBK_SIZE_HIGH2 64 00045 00046 /*Narrowband codebooks*/ 00047 extern signed char cdbk_nb[]; 00048 extern signed char cdbk_nb_low1[]; 00049 extern signed char cdbk_nb_low2[]; 00050 extern signed char cdbk_nb_high1[]; 00051 extern signed char cdbk_nb_high2[]; 00052 00053 /* Quantizes narrowband LSPs with 30 bits */ 00054 void lsp_quant_nb(float *lsp, float *qlsp, int order, SpeexBits *bits); 00055 00056 /* Decodes quantized narrowband LSPs */ 00057 void lsp_unquant_nb(float *lsp, int order, SpeexBits *bits); 00058 00059 /* Quantizes low bit-rate narrowband LSPs with 18 bits */ 00060 void lsp_quant_lbr(float *lsp, float *qlsp, int order, SpeexBits *bits); 00061 00062 /* Decodes quantized low bit-rate narrowband LSPs */ 00063 void lsp_unquant_lbr(float *lsp, int order, SpeexBits *bits); 00064 00065 /* Quantizes high-band LSPs with 12 bits */ 00066 void lsp_quant_high(float *lsp, float *qlsp, int order, SpeexBits *bits); 00067 00068 /* Decodes high-band LSPs */ 00069 void lsp_unquant_high(float *lsp, int order, SpeexBits *bits); 00070 00071 #endif