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141 lines
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C

/*
* Copyright 2013-2019 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 SRSENB_PRACH_WORKER_H
#define SRSENB_PRACH_WORKER_H
#include "srslte/interfaces/enb_interfaces.h"
#include "srslte/common/log.h"
#include "srslte/common/threads.h"
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#include "srslte/common/block_queue.h"
#include "srslte/common/buffer_pool.h"
namespace srsenb {
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class prach_worker : thread
{
public:
prach_worker(uint32_t cc_idx_) : buffer_pool(8), thread("PRACH_WORKER") { cc_idx = cc_idx_; }
int init(const srslte_cell_t& cell_,
const srslte_prach_cfg_t& prach_cfg_,
stack_interface_phy_lte* mac,
srslte::log* log_h,
int priority);
int new_tti(uint32_t tti, cf_t *buffer);
void set_max_prach_offset_us(float delay_us);
void stop();
private:
uint32_t cc_idx = 0;
uint32_t prach_nof_det = 0;
uint32_t prach_indices[165] = {};
float prach_offsets[165] = {};
float prach_p2avg[165] = {};
srslte_cell_t cell = {};
srslte_prach_cfg_t prach_cfg = {};
srslte_prach_t prach = {};
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const static int sf_buffer_sz = 128*1024;
class sf_buffer {
public:
sf_buffer() = default;
void reset()
{
nof_samples = 0;
tti = 0;
}
cf_t samples[sf_buffer_sz] = {};
uint32_t nof_samples = 0;
uint32_t tti = 0;
#ifdef SRSLTE_BUFFER_POOL_LOG_ENABLED
char debug_name[SRSLTE_BUFFER_POOL_LOG_NAME_LEN];
#endif /* SRSLTE_BUFFER_POOL_LOG_ENABLED */
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};
srslte::buffer_pool<sf_buffer> buffer_pool;
srslte::block_queue<sf_buffer*> pending_buffers;
sf_buffer* current_buffer = nullptr;
srslte::log* log_h = nullptr;
stack_interface_phy_lte* stack = nullptr;
float max_prach_offset_us = 0.0f;
bool initiated = false;
bool running = false;
uint32_t nof_sf = 0;
uint32_t sf_cnt = 0;
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void run_thread() final;
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int run_tti(sf_buffer *b);
};
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class prach_worker_pool
{
private:
std::vector<std::unique_ptr<prach_worker> > prach_vec;
public:
prach_worker_pool() = default;
~prach_worker_pool() = default;
void init(uint32_t cc_idx,
const srslte_cell_t& cell_,
const srslte_prach_cfg_t& prach_cfg_,
stack_interface_phy_lte* mac,
srslte::log* log_h,
int priority)
{
// Create PRACH worker if required
while (cc_idx >= prach_vec.size()) {
prach_vec.push_back(std::unique_ptr<prach_worker>(new prach_worker(prach_vec.size())));
}
prach_vec[cc_idx]->init(cell_, prach_cfg_, mac, log_h, priority);
}
void set_max_prach_offset_us(float delay_us)
{
for (auto& prach : prach_vec) {
prach->set_max_prach_offset_us(delay_us);
}
}
void stop()
{
for (auto& prach : prach_vec) {
prach->stop();
}
}
int new_tti(uint32_t cc_idx, uint32_t tti, cf_t* buffer)
{
int ret = SRSLTE_ERROR;
if (cc_idx < prach_vec.size()) {
ret = prach_vec[cc_idx]->new_tti(tti, buffer);
}
return ret;
}
};
}
#endif // SRSENB_PRACH_WORKER_H