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DuerOS-Light-SDK-v1.1.0/duer-os-light/external/speex/libspeex/quant_lsp.h@47:9e361da97763, 2017-07-18 (annotated)

Committer:
TMBOY
Date:
Tue Jul 18 16:54:45 2017 +0800
Revision:
47:9e361da97763
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TMBOY 47:9e361da97763 1 /* Copyright (C) 2002 Jean-Marc Valin */
TMBOY 47:9e361da97763 2 /**
TMBOY 47:9e361da97763 3 @file quant_lsp.h
TMBOY 47:9e361da97763 4 @brief LSP vector quantization
TMBOY 47:9e361da97763 5 */
TMBOY 47:9e361da97763 6 /*
TMBOY 47:9e361da97763 7 Redistribution and use in source and binary forms, with or without
TMBOY 47:9e361da97763 8 modification, are permitted provided that the following conditions
TMBOY 47:9e361da97763 9 are met:
TMBOY 47:9e361da97763 10
TMBOY 47:9e361da97763 11 - Redistributions of source code must retain the above copyright
TMBOY 47:9e361da97763 12 notice, this list of conditions and the following disclaimer.
TMBOY 47:9e361da97763 13
TMBOY 47:9e361da97763 14 - Redistributions in binary form must reproduce the above copyright
TMBOY 47:9e361da97763 15 notice, this list of conditions and the following disclaimer in the
TMBOY 47:9e361da97763 16 documentation and/or other materials provided with the distribution.
TMBOY 47:9e361da97763 17
TMBOY 47:9e361da97763 18 - Neither the name of the Xiph.org Foundation nor the names of its
TMBOY 47:9e361da97763 19 contributors may be used to endorse or promote products derived from
TMBOY 47:9e361da97763 20 this software without specific prior written permission.
TMBOY 47:9e361da97763 21
TMBOY 47:9e361da97763 22 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
TMBOY 47:9e361da97763 23 ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
TMBOY 47:9e361da97763 24 LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
TMBOY 47:9e361da97763 25 A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR
TMBOY 47:9e361da97763 26 CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
TMBOY 47:9e361da97763 27 EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
TMBOY 47:9e361da97763 28 PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
TMBOY 47:9e361da97763 29 PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
TMBOY 47:9e361da97763 30 LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
TMBOY 47:9e361da97763 31 NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
TMBOY 47:9e361da97763 32 SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
TMBOY 47:9e361da97763 33 */
TMBOY 47:9e361da97763 34
TMBOY 47:9e361da97763 35 #ifndef QUANT_LSP_H
TMBOY 47:9e361da97763 36 #define QUANT_LSP_H
TMBOY 47:9e361da97763 37
TMBOY 47:9e361da97763 38 #include <speex/speex_bits.h>
TMBOY 47:9e361da97763 39 #include "misc.h"
TMBOY 47:9e361da97763 40
TMBOY 47:9e361da97763 41 #define MAX_LSP_SIZE 20
TMBOY 47:9e361da97763 42
TMBOY 47:9e361da97763 43 #define NB_CDBK_SIZE 64
TMBOY 47:9e361da97763 44 #define NB_CDBK_SIZE_LOW1 64
TMBOY 47:9e361da97763 45 #define NB_CDBK_SIZE_LOW2 64
TMBOY 47:9e361da97763 46 #define NB_CDBK_SIZE_HIGH1 64
TMBOY 47:9e361da97763 47 #define NB_CDBK_SIZE_HIGH2 64
TMBOY 47:9e361da97763 48
TMBOY 47:9e361da97763 49 /*Narrowband codebooks*/
TMBOY 47:9e361da97763 50 extern const signed char cdbk_nb[];
TMBOY 47:9e361da97763 51 extern const signed char cdbk_nb_low1[];
TMBOY 47:9e361da97763 52 extern const signed char cdbk_nb_low2[];
TMBOY 47:9e361da97763 53 extern const signed char cdbk_nb_high1[];
TMBOY 47:9e361da97763 54 extern const signed char cdbk_nb_high2[];
TMBOY 47:9e361da97763 55
TMBOY 47:9e361da97763 56 /* Quantizes narrowband LSPs with 30 bits */
TMBOY 47:9e361da97763 57 void lsp_quant_nb(spx_lsp_t *lsp, spx_lsp_t *qlsp, int order, SpeexBits *bits);
TMBOY 47:9e361da97763 58
TMBOY 47:9e361da97763 59 /* Decodes quantized narrowband LSPs */
TMBOY 47:9e361da97763 60 void lsp_unquant_nb(spx_lsp_t *lsp, int order, SpeexBits *bits);
TMBOY 47:9e361da97763 61
TMBOY 47:9e361da97763 62 /* Quantizes low bit-rate narrowband LSPs with 18 bits */
TMBOY 47:9e361da97763 63 void lsp_quant_lbr(spx_lsp_t *lsp, spx_lsp_t *qlsp, int order, SpeexBits *bits);
TMBOY 47:9e361da97763 64
TMBOY 47:9e361da97763 65 /* Decodes quantized low bit-rate narrowband LSPs */
TMBOY 47:9e361da97763 66 void lsp_unquant_lbr(spx_lsp_t *lsp, int order, SpeexBits *bits);
TMBOY 47:9e361da97763 67
TMBOY 47:9e361da97763 68 /* Quantizes high-band LSPs with 12 bits */
TMBOY 47:9e361da97763 69 void lsp_quant_high(spx_lsp_t *lsp, spx_lsp_t *qlsp, int order, SpeexBits *bits);
TMBOY 47:9e361da97763 70
TMBOY 47:9e361da97763 71 /* Decodes high-band LSPs */
TMBOY 47:9e361da97763 72 void lsp_unquant_high(spx_lsp_t *lsp, int order, SpeexBits *bits);
TMBOY 47:9e361da97763 73
TMBOY 47:9e361da97763 74 #ifdef EPIC_48K
TMBOY 47:9e361da97763 75 /* Quantizes narrowband LSPs with 14 bits */
TMBOY 47:9e361da97763 76 void lsp_quant_48k(spx_lsp_t *lsp, spx_lsp_t *qlsp, int order, SpeexBits *bits);
TMBOY 47:9e361da97763 77
TMBOY 47:9e361da97763 78 /* Decodes quantized narrowband LSPs (14 bits) */
TMBOY 47:9e361da97763 79 void lsp_unquant_48k(spx_lsp_t *lsp, int order, SpeexBits *bits);
TMBOY 47:9e361da97763 80 #endif
TMBOY 47:9e361da97763 81
TMBOY 47:9e361da97763 82
TMBOY 47:9e361da97763 83 #endif