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//
// Copyright 2014 Ettus Research LLC
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program 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 General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
//
#ifndef INCLUDED_N230_STREAM_MANAGER_HPP
#define INCLUDED_N230_STREAM_MANAGER_HPP
#include "time_core_3000.hpp"
#include "rx_vita_core_3000.hpp"
#include <uhd/types/sid.hpp>
#include <uhd/types/device_addr.hpp>
#include <uhd/types/metadata.hpp>
#include <uhd/transport/zero_copy.hpp>
#include <uhd/transport/bounded_buffer.hpp>
#include <uhd/transport/vrt_if_packet.hpp>
#include <uhd/property_tree.hpp>
#include <uhd/utils/tasks.hpp>
#include <boost/smart_ptr.hpp>
#include "n230_device_args.hpp"
#include "n230_resource_manager.hpp"
namespace uhd { namespace usrp { namespace n230 {
class n230_stream_manager : public boost::noncopyable
{
public: //Methods
n230_stream_manager(
const n230_device_args_t& dev_args,
boost::shared_ptr<n230_resource_manager> resource_mgr,
boost::weak_ptr<property_tree> prop_tree);
virtual ~n230_stream_manager();
rx_streamer::sptr get_rx_stream(
const uhd::stream_args_t &args);
tx_streamer::sptr get_tx_stream(
const uhd::stream_args_t &args_);
bool recv_async_msg(
async_metadata_t &async_metadata,
double timeout);
void update_stream_states();
void update_rx_samp_rate(
const size_t dspno, const double rate);
void update_tx_samp_rate(
const size_t dspno, const double rate);
void update_tick_rate(
const double rate);
private:
typedef transport::bounded_buffer<async_metadata_t> async_md_queue_t;
struct rx_fc_cache_t
{
rx_fc_cache_t():
last_seq_in(0){}
size_t last_seq_in;
};
struct tx_fc_cache_t
{
tx_fc_cache_t():
stream_channel(0),
device_channel(0),
last_seq_out(0),
last_seq_ack(0),
seq_queue(1){}
size_t stream_channel;
size_t device_channel;
size_t last_seq_out;
size_t last_seq_ack;
transport::bounded_buffer<size_t> seq_queue;
boost::shared_ptr<async_md_queue_t> async_queue;
boost::shared_ptr<async_md_queue_t> old_async_queue;
};
typedef boost::function<double(void)> tick_rate_retriever_t;
void _handle_overflow(const size_t i);
double _get_tick_rate();
static size_t _get_rx_flow_control_window(
size_t frame_size, size_t sw_buff_size);
static void _handle_rx_flowctrl(
const sid_t& sid,
transport::zero_copy_if::sptr xport,
boost::shared_ptr<rx_fc_cache_t> fc_cache,
const size_t last_seq);
static void _handle_tx_async_msgs(
boost::shared_ptr<tx_fc_cache_t> guts,
transport::zero_copy_if::sptr xport,
tick_rate_retriever_t get_tick_rate);
static transport::managed_send_buffer::sptr _get_tx_buff_with_flowctrl(
task::sptr /*holds ref*/,
boost::shared_ptr<tx_fc_cache_t> guts,
transport::zero_copy_if::sptr xport,
size_t fc_pkt_window,
const double timeout);
static size_t _get_tx_flow_control_window(
size_t payload_size,
size_t hw_buff_size);
static void _cvita_hdr_unpack(
const boost::uint32_t *packet_buff,
transport::vrt::if_packet_info_t &if_packet_info);
static void _cvita_hdr_pack(
boost::uint32_t *packet_buff,
transport::vrt::if_packet_info_t &if_packet_info);
const n230_device_args_t _dev_args;
boost::shared_ptr<n230_resource_manager> _resource_mgr;
//TODO: Find a way to remove this dependency
boost::weak_ptr<property_tree> _tree;
boost::mutex _stream_setup_mutex;
uhd::msg_task::sptr _async_task;
boost::shared_ptr<async_md_queue_t> _async_md_queue;
boost::weak_ptr<uhd::tx_streamer> _tx_streamers[fpga::NUM_RADIOS];
boost::weak_ptr<uhd::rx_streamer> _rx_streamers[fpga::NUM_RADIOS];
stream_args_t _tx_stream_cached_args[fpga::NUM_RADIOS];
stream_args_t _rx_stream_cached_args[fpga::NUM_RADIOS];
static const boost::uint32_t HW_SEQ_NUM_MASK = 0xFFF;
};
}}} //namespace
#endif //INCLUDED_N230_STREAM_MANAGER_HPP
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