1 files changed, 127 insertions, 0 deletions

diff --git a/codec2.h b/codec2.h
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+/*---------------------------------------------------------------------------*\
+
+  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/>.
+*/
+
+#ifdef __cplusplus
+  extern "C" {
+#endif
+
+#ifndef __CODEC2__
+#define  __CODEC2__
+
+#include <version.h>
+
+#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_700         6
+#define CODEC2_MODE_700B        7
+#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_700_EN)
+        #define CODEC2_MODE_700_EN CODEC2_MODE_EN_DEFAULT
+#endif
+#if !defined(CODEC2_MODE_700B_EN)
+        #define CODEC2_MODE_700B_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 * bits, short speech_in[]);
+void codec2_decode(struct CODEC2 *codec2_state, short speech_out[], const unsigned char *bits);
+void codec2_decode_ber(struct CODEC2 *codec2_state, short speech_out[], const unsigned char *bits, float ber_est);
+int  codec2_samples_per_frame(struct CODEC2 *codec2_state);
+int  codec2_bits_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, int 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 *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);
+void codec2_700c_post_filter(struct CODEC2 *codec2_state, int en);
+      
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+