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362 lines
8.3 KiB
C
362 lines
8.3 KiB
C
/* Copyright (C) 2002-2006 Jean-Marc Valin
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File: modes.c
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Describes the different modes of the codec
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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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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include "modes.h"
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#include "ltp.h"
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#include "quant_lsp.h"
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#include "cb_search.h"
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#include "sb_celp.h"
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#include "nb_celp.h"
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#include "vbr.h"
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#include "arch.h"
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#include <math.h>
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#ifndef NULL
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#define NULL 0
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#endif
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/* Extern declarations for all codebooks we use here */
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extern const signed char gain_cdbk_nb[];
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extern const signed char gain_cdbk_lbr[];
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extern const signed char exc_5_256_table[];
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extern const signed char exc_5_64_table[];
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extern const signed char exc_8_128_table[];
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extern const signed char exc_10_32_table[];
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extern const signed char exc_10_16_table[];
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extern const signed char exc_20_32_table[];
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/* Parameters for Long-Term Prediction (LTP)*/
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static const ltp_params ltp_params_nb = {
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gain_cdbk_nb,
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7,
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7
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};
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/* Parameters for Long-Term Prediction (LTP)*/
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static const ltp_params ltp_params_vlbr = {
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gain_cdbk_lbr,
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5,
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0
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};
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/* Parameters for Long-Term Prediction (LTP)*/
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static const ltp_params ltp_params_lbr = {
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gain_cdbk_lbr,
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5,
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7
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};
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/* Parameters for Long-Term Prediction (LTP)*/
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static const ltp_params ltp_params_med = {
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gain_cdbk_lbr,
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5,
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7
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};
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/* Split-VQ innovation parameters for very low bit-rate narrowband */
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static const split_cb_params split_cb_nb_vlbr = {
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10, /*subvect_size*/
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4, /*nb_subvect*/
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exc_10_16_table, /*shape_cb*/
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4, /*shape_bits*/
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0,
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};
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/* Split-VQ innovation parameters for very low bit-rate narrowband */
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static const split_cb_params split_cb_nb_ulbr = {
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20, /*subvect_size*/
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2, /*nb_subvect*/
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exc_20_32_table, /*shape_cb*/
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5, /*shape_bits*/
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0,
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};
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/* Split-VQ innovation parameters for low bit-rate narrowband */
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static const split_cb_params split_cb_nb_lbr = {
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10, /*subvect_size*/
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4, /*nb_subvect*/
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exc_10_32_table, /*shape_cb*/
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5, /*shape_bits*/
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0,
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};
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/* Split-VQ innovation parameters narrowband */
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static const split_cb_params split_cb_nb = {
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5, /*subvect_size*/
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8, /*nb_subvect*/
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exc_5_64_table, /*shape_cb*/
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6, /*shape_bits*/
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0,
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};
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/* Split-VQ innovation parameters narrowband */
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static const split_cb_params split_cb_nb_med = {
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8, /*subvect_size*/
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5, /*nb_subvect*/
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exc_8_128_table, /*shape_cb*/
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7, /*shape_bits*/
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0,
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};
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/* Split-VQ innovation for low-band wideband */
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static const split_cb_params split_cb_sb = {
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5, /*subvect_size*/
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8, /*nb_subvect*/
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exc_5_256_table, /*shape_cb*/
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8, /*shape_bits*/
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0,
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};
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/* 2150 bps "vocoder-like" mode for comfort noise */
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static const SpeexSubmode nb_submode1 = {
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0,
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1,
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0,
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0,
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/* LSP quantization */
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lsp_quant_lbr,
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lsp_unquant_lbr,
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/* No pitch quantization */
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forced_pitch_quant,
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forced_pitch_unquant,
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NULL,
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/* No innovation quantization (noise only) */
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noise_codebook_quant,
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noise_codebook_unquant,
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NULL,
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-1,
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43
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};
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/* 3.95 kbps very low bit-rate mode */
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static const SpeexSubmode nb_submode8 = {
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0,
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1,
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0,
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0,
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/*LSP quantization*/
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lsp_quant_lbr,
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lsp_unquant_lbr,
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/*No pitch quantization*/
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forced_pitch_quant,
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forced_pitch_unquant,
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NULL,
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/*Innovation quantization*/
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split_cb_search_shape_sign,
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split_cb_shape_sign_unquant,
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&split_cb_nb_ulbr,
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QCONST16(.5,15),
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79
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};
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/* 5.95 kbps very low bit-rate mode */
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static const SpeexSubmode nb_submode2 = {
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0,
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0,
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0,
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0,
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/*LSP quantization*/
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lsp_quant_lbr,
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lsp_unquant_lbr,
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/*No pitch quantization*/
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pitch_search_3tap,
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pitch_unquant_3tap,
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<p_params_vlbr,
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/*Innovation quantization*/
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split_cb_search_shape_sign,
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split_cb_shape_sign_unquant,
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&split_cb_nb_vlbr,
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QCONST16(.6,15),
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119
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};
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/* 8 kbps low bit-rate mode */
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static const SpeexSubmode nb_submode3 = {
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-1,
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0,
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1,
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0,
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/*LSP quantization*/
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lsp_quant_lbr,
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lsp_unquant_lbr,
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/*Pitch quantization*/
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pitch_search_3tap,
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pitch_unquant_3tap,
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<p_params_lbr,
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/*Innovation quantization*/
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split_cb_search_shape_sign,
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split_cb_shape_sign_unquant,
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&split_cb_nb_lbr,
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QCONST16(.55,15),
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160
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};
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/* 11 kbps medium bit-rate mode */
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static const SpeexSubmode nb_submode4 = {
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-1,
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0,
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1,
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0,
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/*LSP quantization*/
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lsp_quant_lbr,
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lsp_unquant_lbr,
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/*Pitch quantization*/
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pitch_search_3tap,
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pitch_unquant_3tap,
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<p_params_med,
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/*Innovation quantization*/
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split_cb_search_shape_sign,
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split_cb_shape_sign_unquant,
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&split_cb_nb_med,
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QCONST16(.45,15),
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220
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};
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/* 15 kbps high bit-rate mode */
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static const SpeexSubmode nb_submode5 = {
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-1,
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0,
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3,
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0,
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/*LSP quantization*/
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lsp_quant_nb,
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lsp_unquant_nb,
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/*Pitch quantization*/
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pitch_search_3tap,
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pitch_unquant_3tap,
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<p_params_nb,
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/*Innovation quantization*/
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split_cb_search_shape_sign,
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split_cb_shape_sign_unquant,
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&split_cb_nb,
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QCONST16(.3,15),
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300
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};
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/* 18.2 high bit-rate mode */
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static const SpeexSubmode nb_submode6 = {
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-1,
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0,
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3,
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0,
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/*LSP quantization*/
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lsp_quant_nb,
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lsp_unquant_nb,
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/*Pitch quantization*/
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pitch_search_3tap,
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pitch_unquant_3tap,
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<p_params_nb,
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/*Innovation quantization*/
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split_cb_search_shape_sign,
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split_cb_shape_sign_unquant,
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&split_cb_sb,
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QCONST16(.2,15),
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364
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};
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/* 24.6 kbps high bit-rate mode */
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static const SpeexSubmode nb_submode7 = {
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-1,
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0,
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3,
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1,
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/*LSP quantization*/
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lsp_quant_nb,
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lsp_unquant_nb,
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/*Pitch quantization*/
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pitch_search_3tap,
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pitch_unquant_3tap,
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<p_params_nb,
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/*Innovation quantization*/
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split_cb_search_shape_sign,
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split_cb_shape_sign_unquant,
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&split_cb_nb,
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QCONST16(.1,15),
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492
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};
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/* Default mode for narrowband */
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static const SpeexNBMode nb_mode = {
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160, /*frameSize*/
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40, /*subframeSize*/
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10, /*lpcSize*/
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17, /*pitchStart*/
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144, /*pitchEnd*/
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#ifdef FIXED_POINT
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29491, 19661, /* gamma1, gamma2 */
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#else
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0.9, 0.6, /* gamma1, gamma2 */
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#endif
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QCONST16(.0002,15), /*lpc_floor*/
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{NULL, &nb_submode1, &nb_submode2, &nb_submode3, &nb_submode4, &nb_submode5, &nb_submode6, &nb_submode7,
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&nb_submode8, NULL, NULL, NULL, NULL, NULL, NULL, NULL},
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5,
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{1, 8, 2, 3, 3, 4, 4, 5, 5, 6, 7}
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};
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/* Default mode for narrowband */
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const SpeexMode speex_nb_mode = {
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&nb_mode,
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nb_mode_query,
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"narrowband",
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0,
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4,
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&nb_encoder_init,
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&nb_encoder_destroy,
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&nb_encode,
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&nb_decoder_init,
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&nb_decoder_destroy,
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&nb_decode,
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&nb_encoder_ctl,
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&nb_decoder_ctl,
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};
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int speex_mode_query(const SpeexMode *mode, int request, void *ptr)
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{
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return mode->query(mode->mode, request, ptr);
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}
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