From f40bfc9267b13b54e6379dfe7539447662879d24 Mon Sep 17 00:00:00 2001 From: Sean Bartell Date: Sat, 25 Jun 2011 21:32:25 -0400 Subject: Add codecs to librbcodec. MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Change-Id: Id7f4717d51ed02d67cb9f9cb3c0ada4a81843f97 Reviewed-on: http://gerrit.rockbox.org/137 Reviewed-by: Nils Wallménius Tested-by: Nils Wallménius --- lib/rbcodec/codecs/libspeex/quant_lsp.h | 74 +++++++++++++++++++++++++++++++++ 1 file changed, 74 insertions(+) create mode 100644 lib/rbcodec/codecs/libspeex/quant_lsp.h (limited to 'lib/rbcodec/codecs/libspeex/quant_lsp.h') diff --git a/lib/rbcodec/codecs/libspeex/quant_lsp.h b/lib/rbcodec/codecs/libspeex/quant_lsp.h new file mode 100644 index 0000000000..0fc206be6f --- /dev/null +++ b/lib/rbcodec/codecs/libspeex/quant_lsp.h @@ -0,0 +1,74 @@ +/* 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 -- cgit v1.2.3