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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_SINK_H
#define INCLUDED_IIO_DEVICE_SINK_H
#include <gnuradio/iio/api.h>
#include <gnuradio/sync_block.h>
#include <string>
#define DEFAULT_BUFFER_SIZE 0x8000
extern "C" {
struct iio_context;
};
namespace gr {
namespace iio {
/*!
* \brief Generic sink for IIO drivers with buffered input channels
* \ingroup iio
*
* \details
* This block allows for streaming data to any IIO driver which has input
* scan elements or buffered channels.
*/
class IIO_API device_sink : virtual public gr::sync_block
{
public:
typedef std::shared_ptr<device_sink> sptr;
/*!
* \brief Return a shared_ptr to a new instance of iio::device.
*
* \param uri String of the context uri
* \param device String of device name
* \param channels Vector of strings of channels names
* \param device_phy String of phy device name where attribute updates are
* applied
* \param params Vector of strings of attributes to set in form:
* "<attribute name>=<value to set>,<attribute name>=<value to set>"
* \param buffer_size Integer number of samples to be put into each IIO
* buffered passed to hardware.
* \param interpolation Integer number of zeros to insert into transmit
* transmit buffers between samples
* \param cyclic Boolean when True sends first buffer_size number of samples
* to hardware which is repeated in the hardware itself. Future
* samples are ignored.
*/
static sptr make(const std::string& uri,
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 interpolation = 0,
bool cyclic = false);
static sptr make_from(iio_context* 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 interpolation = 0,
bool cyclic = false);
/*!
* The key of the tag that indicates packet length.
* When not empty, samples are expected as "packets" and
* must be tagged as such, i.e. the first sample of a packet needs to be
* tagged with the corresponding length of that packet.
* Note, packet size MUST be equal to buffer_size / (1+interpolation),
* otherwise a runtime_error will be thrown. This is a deliberate design
* choice, because all other options would result in potentially unexpected
* behavior.
*/
virtual void set_len_tag_key(const std::string& len_tag_key) = 0;
};
} // namespace iio
} // namespace gr
#endif /* INCLUDED_IIO_DEVICE_SINK_H */
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