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123 lines
4.1 KiB
C
Executable File
123 lines
4.1 KiB
C
Executable File
/*---------------------------------------------------------------------------*\
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FILE........: codec2.h
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AUTHOR......: David Rowe
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DATE CREATED: 21 August 2010
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Codec 2 fully quantised encoder and decoder functions. If you want use
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Codec 2, these are the functions you need to call.
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\*---------------------------------------------------------------------------*/
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/*
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Copyright (C) 2010 David Rowe
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All rights reserved.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License version 2.1, as
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published by the Free Software Foundation. This program is
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distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
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License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef __CODEC2__
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#define __CODEC2__
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#include "version.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define CODEC2_MODE_3200 0
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#define CODEC2_MODE_2400 1
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#define CODEC2_MODE_1600 2
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#define CODEC2_MODE_1400 3
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#define CODEC2_MODE_1300 4
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#define CODEC2_MODE_1200 5
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#define CODEC2_MODE_700C 8
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#define CODEC2_MODE_450 10
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#define CODEC2_MODE_450PWB 11
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#ifndef CODEC2_MODE_EN_DEFAULT
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#define CODEC2_MODE_EN_DEFAULT 1
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#endif
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// by default we enable all modes
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// disable during compile time with -DCODEC2_MODE_1600_EN=0
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// all but CODEC2 1600 are enabled then
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//or the other way round
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// -DCODEC2_MODE_EN_DEFAULT=0 -DCODEC2_MODE_1600_EN=1
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// only CODEC2 Mode 1600
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#if !defined(CODEC2_MODE_3200_EN)
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#define CODEC2_MODE_3200_EN CODEC2_MODE_EN_DEFAULT
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#endif
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#if !defined(CODEC2_MODE_2400_EN)
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#define CODEC2_MODE_2400_EN CODEC2_MODE_EN_DEFAULT
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#endif
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#if !defined(CODEC2_MODE_1600_EN)
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#define CODEC2_MODE_1600_EN CODEC2_MODE_EN_DEFAULT
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#endif
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#if !defined(CODEC2_MODE_1400_EN)
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#define CODEC2_MODE_1400_EN CODEC2_MODE_EN_DEFAULT
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#endif
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#if !defined(CODEC2_MODE_1300_EN)
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#define CODEC2_MODE_1300_EN CODEC2_MODE_EN_DEFAULT
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#endif
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#if !defined(CODEC2_MODE_1200_EN)
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#define CODEC2_MODE_1200_EN CODEC2_MODE_EN_DEFAULT
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#endif
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#if !defined(CODEC2_MODE_700C_EN)
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#define CODEC2_MODE_700C_EN CODEC2_MODE_EN_DEFAULT
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#endif
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#if !defined(CODEC2_MODE_450_EN)
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#define CODEC2_MODE_450_EN CODEC2_MODE_EN_DEFAULT
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#endif
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#if !defined(CODEC2_MODE_450PWB_EN)
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#define CODEC2_MODE_450PWB_EN CODEC2_MODE_EN_DEFAULT
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#endif
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#define CODEC2_MODE_ACTIVE(mode_name, var) ((mode_name##_EN) == 0 ? 0: (var) == mode_name)
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struct CODEC2;
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struct CODEC2 * codec2_create(int mode);
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void codec2_destroy(struct CODEC2 *codec2_state);
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void codec2_encode(struct CODEC2 *codec2_state, unsigned char * bits, short speech_in[]);
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void codec2_decode(struct CODEC2 *codec2_state, short speech_out[], const unsigned char *bits);
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void codec2_decode_ber(struct CODEC2 *codec2_state, short speech_out[], const unsigned char *bits, float ber_est);
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int codec2_samples_per_frame(struct CODEC2 *codec2_state);
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int codec2_bits_per_frame(struct CODEC2 *codec2_state);
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void codec2_set_lpc_post_filter(struct CODEC2 *codec2_state, int enable, int bass_boost, float beta, float gamma);
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int codec2_get_spare_bit_index(struct CODEC2 *codec2_state);
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int codec2_rebuild_spare_bit(struct CODEC2 *codec2_state, char unpacked_bits[]);
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void codec2_set_natural_or_gray(struct CODEC2 *codec2_state, int gray);
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void codec2_set_softdec(struct CODEC2 *c2, float *softdec);
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float codec2_get_energy(struct CODEC2 *codec2_state, const unsigned char *bits);
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// support for ML and VQ experiments
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void codec2_open_mlfeat(struct CODEC2 *codec2_state, char *feat_filename, char *model_filename);
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void codec2_load_codebook(struct CODEC2 *codec2_state, int num, char *filename);
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float codec2_get_var(struct CODEC2 *codec2_state);
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float *codec2_enable_user_ratek(struct CODEC2 *codec2_state, int *K);
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// 700C post filter and equaliser
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void codec2_700c_post_filter(struct CODEC2 *codec2_state, int en);
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void codec2_700c_eq(struct CODEC2 *codec2_state, int en);
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#ifdef __cplusplus
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}
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#endif
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#endif
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