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Diffstat (limited to 'src/codec2.h')
| -rw-r--r-- | src/codec2.h | 123 |
1 files changed, 123 insertions, 0 deletions
diff --git a/src/codec2.h b/src/codec2.h new file mode 100644 index 0000000..0aab21d --- /dev/null +++ b/src/codec2.h @@ -0,0 +1,123 @@ +/*---------------------------------------------------------------------------*\ + + FILE........: codec2.h + AUTHOR......: David Rowe + DATE CREATED: 21 August 2010 + + Codec 2 fully quantised encoder and decoder functions. If you want use + Codec 2, these are the functions you need to call. + +\*---------------------------------------------------------------------------*/ + +/* + Copyright (C) 2010 David Rowe + + All rights reserved. + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU Lesser General Public License version 2.1, as + published by the Free Software Foundation. This program is + distributed in the hope that it will be useful, but WITHOUT ANY + WARRANTY; without even the implied warranty of MERCHANTABILITY or + FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public + License for more details. + + You should have received a copy of the GNU Lesser General Public License + along with this program; if not, see <http://www.gnu.org/licenses/>. +*/ + +#ifndef __CODEC2__ +#define __CODEC2__ +#include <stdbool.h> +#include <codec2/version.h> + +#ifdef __cplusplus + extern "C" { +#endif + +#define CODEC2_MODE_3200 0 +#define CODEC2_MODE_2400 1 +#define CODEC2_MODE_1600 2 +#define CODEC2_MODE_1400 3 +#define CODEC2_MODE_1300 4 +#define CODEC2_MODE_1200 5 +#define CODEC2_MODE_700C 8 +#define CODEC2_MODE_450 10 +#define CODEC2_MODE_450PWB 11 + +#ifndef CODEC2_MODE_EN_DEFAULT +#define CODEC2_MODE_EN_DEFAULT 1 +#endif + +// by default we enable all modes +// disable during compile time with -DCODEC2_MODE_1600_EN=0 +// all but CODEC2 1600 are enabled then + +//or the other way round +// -DCODEC2_MODE_EN_DEFAULT=0 -DCODEC2_MODE_1600_EN=1 +// only CODEC2 Mode 1600 + +#if !defined(CODEC2_MODE_3200_EN) + #define CODEC2_MODE_3200_EN CODEC2_MODE_EN_DEFAULT +#endif +#if !defined(CODEC2_MODE_2400_EN) + #define CODEC2_MODE_2400_EN CODEC2_MODE_EN_DEFAULT +#endif +#if !defined(CODEC2_MODE_1600_EN) + #define CODEC2_MODE_1600_EN CODEC2_MODE_EN_DEFAULT +#endif +#if !defined(CODEC2_MODE_1400_EN) + #define CODEC2_MODE_1400_EN CODEC2_MODE_EN_DEFAULT +#endif +#if !defined(CODEC2_MODE_1300_EN) + #define CODEC2_MODE_1300_EN CODEC2_MODE_EN_DEFAULT +#endif +#if !defined(CODEC2_MODE_1200_EN) + #define CODEC2_MODE_1200_EN CODEC2_MODE_EN_DEFAULT +#endif +#if !defined(CODEC2_MODE_700C_EN) + #define CODEC2_MODE_700C_EN CODEC2_MODE_EN_DEFAULT +#endif +#if !defined(CODEC2_MODE_450_EN) + #define CODEC2_MODE_450_EN CODEC2_MODE_EN_DEFAULT +#endif +#if !defined(CODEC2_MODE_450PWB_EN) + #define CODEC2_MODE_450PWB_EN CODEC2_MODE_EN_DEFAULT +#endif + +#define CODEC2_MODE_ACTIVE(mode_name, var) ((mode_name##_EN) == 0 ? 0: (var) == mode_name) + +struct CODEC2; + +struct CODEC2 *codec2_create(int mode); +void codec2_destroy(struct CODEC2 *codec2_state); +void codec2_encode(struct CODEC2 *codec2_state, unsigned char bytes[], short speech_in[]); +void codec2_decode(struct CODEC2 *codec2_state, short speech_out[], const unsigned char bytes[]); +void codec2_decode_ber(struct CODEC2 *codec2_state, short speech_out[], const unsigned char *bytes, float ber_est); +int codec2_samples_per_frame(struct CODEC2 *codec2_state); +int codec2_bits_per_frame(struct CODEC2 *codec2_state); +int codec2_bytes_per_frame(struct CODEC2 *codec2_state); + +void codec2_set_lpc_post_filter(struct CODEC2 *codec2_state, int enable, int bass_boost, float beta, float gamma); +int codec2_get_spare_bit_index(struct CODEC2 *codec2_state); +int codec2_rebuild_spare_bit(struct CODEC2 *codec2_state, char unpacked_bits[]); +void codec2_set_natural_or_gray(struct CODEC2 *codec2_state, int gray); +void codec2_set_softdec(struct CODEC2 *c2, float *softdec); +float codec2_get_energy(struct CODEC2 *codec2_state, const unsigned char *bits); + +// support for ML and VQ experiments +void codec2_open_mlfeat(struct CODEC2 *codec2_state, char *feat_filename, char *model_filename); +void codec2_load_codebook(struct CODEC2 *codec2_state, int num, char *filename); +float codec2_get_var(struct CODEC2 *codec2_state); +float *codec2_enable_user_ratek(struct CODEC2 *codec2_state, int *K); + +// 700C post filter and equaliser +void codec2_700c_post_filter(struct CODEC2 *codec2_state, bool en); +void codec2_700c_eq(struct CODEC2 *codec2_state, bool en); + +#ifdef __cplusplus +} +#endif + +#endif + |