srsLTE/lib/include/srslte/phy/channel/delay.h

67 lines
2.2 KiB
C

/*
* Copyright 2013-2020 Software Radio Systems Limited
*
* This file is part of srsLTE.
*
* srsLTE is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of
* the License, or (at your option) any later version.
*
* srsLTE 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 Affero General Public License for more details.
*
* A copy of the GNU Affero General Public License can be found in
* the LICENSE file in the top-level directory of this distribution
* and at http://www.gnu.org/licenses/.
*
*/
#ifndef SRSLTE_DELAY_H
#define SRSLTE_DELAY_H
#include <srslte/srslte.h>
typedef struct {
float delay_min_us;
float delay_max_us;
float period_s;
float init_time_s;
uint32_t srate_max_hz;
uint32_t srate_hz;
float delay_us;
uint32_t delay_nsamples;
srslte_ringbuffer_t rb;
cf_t* zero_buffer;
} srslte_channel_delay_t;
#ifdef __cplusplus
extern "C" {
#endif
SRSLTE_API int srslte_channel_delay_init(srslte_channel_delay_t* q,
float delay_min_us,
float delay_max_us,
float period_s,
float init_time_s,
uint32_t srate_max_hz);
SRSLTE_API void srslte_channel_delay_update_srate(srslte_channel_delay_t* q, uint32_t srate_hz);
SRSLTE_API void srslte_channel_delay_free(srslte_channel_delay_t* q);
SRSLTE_API void srslte_channel_delay_execute(srslte_channel_delay_t* q,
const cf_t* in,
cf_t* out,
uint32_t len,
const srslte_timestamp_t* ts);
#ifdef __cplusplus
}
#endif
#endif // SRSLTE_DELAY_H