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/* -*- c++ -*- */
/*
* Copyright 2014 Analog Devices Inc.
* Author: Paul Cercueil <paul.cercueil@analog.com>
*
* SPDX-License-Identifier: GPL-3.0-or-later
*
*/
#ifndef INCLUDED_IIO_DEVICE_SOURCE_IMPL_H
#define INCLUDED_IIO_DEVICE_SOURCE_IMPL_H
#include <gnuradio/iio/device_source.h>
#include <iio.h>
#include <condition_variable>
#include <mutex>
#include <string>
#include <thread>
#include <vector>
namespace gr {
namespace iio {
struct ctxInfo {
std::string uri;
struct iio_context* ctx;
int count;
};
static std::mutex ctx_mutex;
static std::vector<ctxInfo> contexts;
typedef std::vector<ctxInfo>::iterator ctx_it;
class device_source_impl : public device_source
{
private:
void channel_read(const struct iio_channel* chn, void* dst, size_t len);
/*std::condition_variable iio_cond, iio_cond2;*/
std::mutex iio_mutex;
std::thread refill_thd;
unsigned long items_in_buffer;
off_t byte_offset;
volatile bool please_refill_buffer;
pmt::pmt_t port_id;
unsigned long timeout;
pmt::pmt_t d_len_tag_key;
void refill_thread();
protected:
struct iio_context* ctx;
struct iio_device *dev, *phy;
struct iio_buffer* buf;
std::vector<struct iio_channel*> channel_list;
unsigned int buffer_size;
unsigned int decimation;
bool destroy_ctx;
volatile bool thread_stopped;
public:
device_source_impl(struct iio_context* ctx,
bool destroy_ctx,
const std::string& device,
const std::vector<std::string>& channels,
const std::string& device_phy,
const std::vector<std::string>& params,
unsigned int buffer_size = DEFAULT_BUFFER_SIZE,
unsigned int decimation = 0);
~device_source_impl();
static void set_params(struct iio_device* phy,
const std::vector<std::string>& params);
void set_len_tag_key(const std::string& len_tag_key) override;
void set_params(const std::vector<std::string>& params);
void set_buffer_size(unsigned int buffer_size);
void set_timeout_ms(unsigned long timeout);
// Where all the action really happens
int work(int noutput_items,
gr_vector_const_void_star& input_items,
gr_vector_void_star& output_items);
bool start();
bool stop();
static void remove_ctx_history(struct iio_context* ctx, bool destroy_ctx);
static struct iio_context* get_context(const std::string& uri);
static bool load_fir_filter(std::string& filter, struct iio_device* phy);
static int handle_decimation_interpolation(unsigned long samplerate,
const char* channel_name,
const char* attr_name,
struct iio_device* dev,
bool disable_dec,
bool output_chan);
};
} // namespace iio
} // namespace gr
#endif /* INCLUDED_IIO_DEVICE_SOURCE_IMPL_H */
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