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187 lines
9.0 KiB
C
187 lines
9.0 KiB
C
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///////////////////////////////////////////////////////////////////////////////////
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// Copyright (C) 2019 Edouard Griffiths, F4EXB //
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// //
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// freedv_api.h replacement //
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// //
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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 General Public License as published by //
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// the Free Software Foundation as version 3 of the License, or //
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// //
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// This program is distributed in the hope that it will be useful, //
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// but WITHOUT ANY WARRANTY; without even the implied warranty of //
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the //
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// GNU General Public License V3 for more details. //
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// //
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// You should have received a copy of the GNU 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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/*---------------------------------------------------------------------------*\
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FILE........: freedv_api.h
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AUTHOR......: David Rowe
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DATE CREATED: August 2014
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Library of API functions that implement FreeDV "modes", useful for
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embedding FreeDV in other programs. Please see the documentation
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for each function in freedv_api.c, and the sample freedv_tx.c and
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freedv_rx.c programs.
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\*---------------------------------------------------------------------------*/
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/*
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Copyright (C) 2014 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 LIBFREEDV_LIBFREEDV_H_
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#define LIBFREEDV_LIBFREEDV_H_
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// This declares a single-precision (float) complex number
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#include <cstddef>
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#include <sys/types.h>
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#include "codec2/comp.h"
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#include "codec2_ofdm.h"
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#define FREEDV_MODE_1600 0
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#define FREEDV_MODE_700 1
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#define FREEDV_MODE_700B 2
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#define FREEDV_MODE_2400A 3
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#define FREEDV_MODE_2400B 4
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#define FREEDV_MODE_800XA 5
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#define FREEDV_MODE_700C 6
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#define FREEDV_MODE_700D 7
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/* operator control of 700D state machine */
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#define FREEDV_SYNC_UNSYNC 0 /* force sync state machine to lose sync, and search for new sync */
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#define FREEDV_SYNC_AUTO 1 /* falls out of sync automatically */
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#define FREEDV_SYNC_MANUAL 2 /* fall out of sync only under operator control */
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namespace FreeDV
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{
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struct freedv;
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/* advanced freedv open options rqd by some modes */
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struct freedv_advanced {
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int interleave_frames;
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};
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/* Called when text message char is decoded */
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typedef void (*freedv_callback_rx)(void *, char);
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/* Called when new text message char is needed */
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typedef char (*freedv_callback_tx)(void *);
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typedef void (*freedv_calback_error_pattern)
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(void *error_pattern_callback_state, short error_pattern[], int sz_error_pattern);
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/* Protocol bits are packed MSB-first */
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/* Called when a frame containing protocol data is decoded */
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typedef void (*freedv_callback_protorx)(void *, char *);
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/* Called when a frame containing protocol data is to be sent */
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typedef void (*freedv_callback_prototx)(void *, char *);
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/* Data packet callbacks */
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/* Called when a packet has been received */
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typedef void (*freedv_callback_datarx)(void *, unsigned char *packet, std::size_t size);
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/* Called when a new packet can be send */
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typedef void (*freedv_callback_datatx)(void *, unsigned char *packet, std::size_t *size);
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/*---------------------------------------------------------------------------*\
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FreeDV API functions
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\*---------------------------------------------------------------------------*/
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// open, close ----------------------------------------------------------------
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struct freedv *freedv_open(int mode);
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struct freedv *freedv_open_advanced(int mode, struct freedv_advanced *adv);
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void freedv_close (struct freedv *freedv);
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// Transmit -------------------------------------------------------------------
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void freedv_tx (struct freedv *freedv, short mod_out[], short speech_in[]);
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void freedv_comptx (struct freedv *freedv, COMP mod_out[], short speech_in[]);
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void freedv_codectx (struct freedv *f, short mod_out[], unsigned char *packed_codec_bits);
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void freedv_datatx (struct freedv *f, short mod_out[]);
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int freedv_data_ntxframes (struct freedv *freedv);
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// Receive -------------------------------------------------------------------
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int freedv_nin (struct freedv *freedv);
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int freedv_rx (struct freedv *freedv, short speech_out[], short demod_in[]);
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int freedv_shortrx (struct freedv *freedv, short speech_out[], short demod_in[], float gain);
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int freedv_floatrx (struct freedv *freedv, short speech_out[], float demod_in[]);
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int freedv_comprx (struct freedv *freedv, short speech_out[], COMP demod_in[]);
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int freedv_codecrx (struct freedv *freedv, unsigned char *packed_codec_bits, short demod_in[]);
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// Set parameters ------------------------------------------------------------
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void freedv_set_callback_txt (struct freedv *freedv, freedv_callback_rx rx, freedv_callback_tx tx, void *callback_state);
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void freedv_set_callback_protocol (struct freedv *freedv, freedv_callback_protorx rx, freedv_callback_prototx tx, void *callback_state);
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void freedv_set_callback_data (struct freedv *freedv, freedv_callback_datarx datarx, freedv_callback_datatx datatx, void *callback_state);
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void freedv_set_test_frames (struct freedv *freedv, int test_frames);
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void freedv_set_test_frames_diversity (struct freedv *freedv, int test_frames_diversity);
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void freedv_set_smooth_symbols (struct freedv *freedv, int smooth_symbols);
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void freedv_set_squelch_en (struct freedv *freedv, int squelch_en);
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void freedv_set_snr_squelch_thresh (struct freedv *freedv, float snr_squelch_thresh);
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void freedv_set_clip (struct freedv *freedv, int val);
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void freedv_set_total_bit_errors (struct freedv *freedv, int val);
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void freedv_set_total_bits (struct freedv *freedv, int val);
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void freedv_set_callback_error_pattern (struct freedv *freedv, freedv_calback_error_pattern cb, void *state);
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void freedv_set_varicode_code_num (struct freedv *freedv, int val);
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void freedv_set_data_header (struct freedv *freedv, unsigned char *header);
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int freedv_set_alt_modem_samp_rate (struct freedv *freedv, int samp_rate);
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void freedv_set_carrier_ampl (struct freedv *freedv, int c, float ampl);
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void freedv_set_sync (struct freedv *freedv, Sync sync_cmd);
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void freedv_set_verbose (struct freedv *freedv, int verbosity);
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void freedv_set_tx_bpf (struct freedv *freedv, int val);
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void freedv_set_ext_vco (struct freedv *f, int val);
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// Get parameters -------------------------------------------------------------------------
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struct MODEM_STATS;
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int freedv_get_version(void);
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int freedv_get_mode (struct freedv *freedv);
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void freedv_get_modem_stats (struct freedv *freedv, int *sync, float *snr_est);
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void freedv_get_modem_extended_stats(struct freedv *freedv, struct MODEM_STATS *stats);
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int freedv_get_test_frames (struct freedv *freedv);
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int freedv_get_n_speech_samples (struct freedv *freedv);
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int freedv_get_modem_sample_rate (struct freedv *freedv);
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int freedv_get_modem_symbol_rate (struct freedv *freedv);
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int freedv_get_n_max_modem_samples (struct freedv *freedv);
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int freedv_get_n_nom_modem_samples (struct freedv *freedv);
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int freedv_get_total_bits (struct freedv *freedv);
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int freedv_get_total_bit_errors (struct freedv *freedv);
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int freedv_get_total_bits_coded (struct freedv *freedv);
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int freedv_get_total_bit_errors_coded(struct freedv *freedv);
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int freedv_get_sync (struct freedv *freedv);
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int freedv_get_sync_interleaver (struct freedv *freedv);
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struct FSK * freedv_get_fsk (struct freedv *f);
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struct CODEC2 *freedv_get_codec2 (struct freedv *freedv);
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int freedv_get_n_codec_bits (struct freedv *freedv);
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int freedv_get_sz_error_pattern (struct freedv *freedv);
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int freedv_get_protocol_bits (struct freedv *freedv);
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} // namespace FreeDV
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#endif /* LIBFREEDV_LIBFREEDV_H_ */
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