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71 lines
2.7 KiB
71 lines
2.7 KiB
/* Copyright (C) 2002 Jean-Marc Valin |
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File: quant_lsp.h |
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LSP vector quantization |
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Redistribution and use in source and binary forms, with or without |
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modification, are permitted provided that the following conditions |
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are met: |
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- Redistributions of source code must retain the above copyright |
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notice, this list of conditions and the following disclaimer. |
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- Redistributions in binary form must reproduce the above copyright |
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notice, this list of conditions and the following disclaimer in the |
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documentation and/or other materials provided with the distribution. |
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- Neither the name of the Xiph.org Foundation nor the names of its |
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contributors may be used to endorse or promote products derived from |
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this software without specific prior written permission. |
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
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A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR |
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CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
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EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
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PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
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PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF |
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LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING |
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NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
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SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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*/ |
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#ifndef QUANT_LSP_H |
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#define QUANT_LSP_H |
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#include "speex_bits.h" |
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#define MAX_LSP_SIZE 20 |
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#define NB_CDBK_SIZE 64 |
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#define NB_CDBK_SIZE_LOW1 64 |
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#define NB_CDBK_SIZE_LOW2 64 |
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#define NB_CDBK_SIZE_HIGH1 64 |
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#define NB_CDBK_SIZE_HIGH2 64 |
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/*Narrowband codebooks*/ |
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extern signed char cdbk_nb[]; |
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extern signed char cdbk_nb_low1[]; |
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extern signed char cdbk_nb_low2[]; |
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extern signed char cdbk_nb_high1[]; |
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extern signed char cdbk_nb_high2[]; |
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/* Quantizes narrowband LSPs with 30 bits */ |
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void lsp_quant_nb(float *lsp, float *qlsp, int order, SpeexBits *bits); |
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/* Decodes quantized narrowband LSPs */ |
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void lsp_unquant_nb(float *lsp, int order, SpeexBits *bits); |
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/* Quantizes low bit-rate narrowband LSPs with 18 bits */ |
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void lsp_quant_lbr(float *lsp, float *qlsp, int order, SpeexBits *bits); |
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/* Decodes quantized low bit-rate narrowband LSPs */ |
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void lsp_unquant_lbr(float *lsp, int order, SpeexBits *bits); |
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/* Quantizes high-band LSPs with 12 bits */ |
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void lsp_quant_high(float *lsp, float *qlsp, int order, SpeexBits *bits); |
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/* Decodes high-band LSPs */ |
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void lsp_unquant_high(float *lsp, int order, SpeexBits *bits); |
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#endif
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