uhd::rfnoc::split_stream_block_control Class Reference

#include <uhd/rfnoc/split_stream_block_control.hpp>

Inheritance diagram for uhd::rfnoc::split_stream_block_control:

Additional Inherited Members
Public Types inherited from uhd::rfnoc::noc_block_base
using	sptr = std::shared_ptr< noc_block_base >
using	make_args_ptr = std::unique_ptr< make_args_t >
	Opaque pointer to the constructor arguments. More...
Public Types inherited from uhd::rfnoc::node_t
enum class	forwarding_policy_t {   ONE_TO_ONE , ONE_TO_FAN , ONE_TO_ALL_IN , ONE_TO_ALL_OUT ,   ONE_TO_ALL , DROP , USE_MAP }
	Types of property/action forwarding for those not defined by the block itself. More...
using	resolver_fn_t = std::function< void(void)>
using	resolve_callback_t = std::function< void(void)>
using	action_handler_t = std::function< void(const res_source_info &, action_info::sptr)>
using	forwarding_map_t = std::unordered_map< res_source_info, std::vector< res_source_info > >
Public Member Functions inherited from uhd::rfnoc::noc_block_base
	~noc_block_base () override
std::string	get_unique_id () const override
	Unique ID for an RFNoC block is its block ID. More...
size_t	get_num_input_ports () const override
	Number of input ports. Note: This gets passed into this block from the. More...
size_t	get_num_output_ports () const override
	Number of output ports. Note: This gets passed outto this block from the. More...
noc_id_t	get_noc_id () const
const block_id_t &	get_block_id () const
double	get_tick_rate () const
size_t	get_mtu (const res_source_info &edge)
uhd::device_addr_t	get_block_args () const
uhd::property_tree::sptr &	get_tree () const
	Return a reference to this block's subtree. More...
uhd::property_tree::sptr &	get_tree ()
	Return a reference to this block's subtree (non-const version) More...
Public Member Functions inherited from uhd::rfnoc::node_t
	node_t ()
virtual	~node_t ()
virtual std::string	get_unique_id () const
	Return a unique identifier string for this node. In every RFNoC graph,. More...
virtual size_t	get_num_input_ports () const =0
virtual size_t	get_num_output_ports () const =0
std::vector< std::string >	get_property_ids () const
template<typename prop_data_t >
void	set_property (const std::string &id, const prop_data_t &val, const size_t instance=0)
void	set_properties (const uhd::device_addr_t &props, const size_t instance=0)
template<typename prop_data_t >
const prop_data_t &	get_property (const std::string &id, const size_t instance=0)
virtual void	set_command_time (uhd::time_spec_t time, const size_t instance)
virtual uhd::time_spec_t	get_command_time (const size_t instance) const
virtual void	clear_command_time (const size_t instance)
Public Member Functions inherited from uhd::rfnoc::register_iface_holder
	register_iface_holder (register_iface::sptr reg)
virtual	~register_iface_holder ()=default
register_iface &	regs ()
Static Public Attributes inherited from uhd::rfnoc::node_t
static const size_t	ANY_PORT = size_t(~0)
Protected Types inherited from uhd::rfnoc::node_t
using	prop_ptrs_t = std::unordered_set< property_base_t * >
Protected Member Functions inherited from uhd::rfnoc::noc_block_base
	noc_block_base (make_args_ptr make_args)
void	set_num_input_ports (const size_t num_ports)
	Update number of input ports. More...
void	set_num_output_ports (const size_t num_ports)
	Update number of output ports. More...
void	set_tick_rate (const double tick_rate)
void	set_mtu_forwarding_policy (const forwarding_policy_t policy)
void	set_mtu (const res_source_info &edge, const size_t new_mtu)
property_base_t *	get_mtu_prop_ref (const res_source_info &edge)
std::shared_ptr< mb_controller >	get_mb_controller ()
virtual void	deinit ()
Protected Member Functions inherited from uhd::rfnoc::node_t
void	register_property (property_base_t *prop, resolve_callback_t &&clean_callback=nullptr)
void	add_property_resolver (prop_ptrs_t &&inputs, prop_ptrs_t &&outputs, resolver_fn_t &&resolver_fn)
void	set_prop_forwarding_policy (forwarding_policy_t policy, const std::string &prop_id="")
void	set_prop_forwarding_map (const forwarding_map_t &map)
template<typename prop_data_t >
void	set_property (const std::string &id, const prop_data_t &val, const res_source_info &src_info)
template<typename prop_data_t >
const prop_data_t &	get_property (const std::string &id, const res_source_info &src_info)
void	register_action_handler (const std::string &id, action_handler_t &&handler)
void	set_action_forwarding_policy (forwarding_policy_t policy, const std::string &action_key="")
void	set_action_forwarding_map (const forwarding_map_t &map)
void	post_action (const res_source_info &edge_info, action_info::sptr action)
virtual bool	check_topology (const std::vector< size_t > &connected_inputs, const std::vector< size_t > &connected_outputs)
virtual void	shutdown ()
Protected Member Functions inherited from uhd::rfnoc::register_iface_holder
void	update_reg_iface (register_iface::sptr new_iface=nullptr)
Static Protected Attributes inherited from uhd::rfnoc::node_t
static dirtifier_t	ALWAYS_DIRTY
	A dirtifyer object, useful for properties that always need updating. More...

Detailed Description

Split Stream Block Control Class

The Split Stream Block is an RFNoC block that takes in a single CHDR stream and duplicates it, creating a number of output streams for each input stream. The number of streams is defined by the NUM_PORTS parameter used to instantiate the RFNoC block in the image, while the number of output branches is defined by the NUM_BRANCH parameter. In software, this corresponds to an RFNoC block having NUM_PORTS input ports and NUM_PORTS * NUM_BRANCH output ports.

Given the following example of a split stream RFNoC block with NUM_PORTS = 2 and NUM_BRANCH = 3, the input streams map to output branches and streams as follows. The number located at each input and output indicates the port number corresponding to that stream and branch:

             +----------+
Stream A --->|0        0|---> Stream A } Branch 0
Stream B --->|1        1|---> Stream B
             |         2|---> Stream A } Branch 1
             |         3|---> Stream B
             |         4|---> Stream A } Branch 2
             |         5|---> Stream B
             +----------+

In other words, the port number corresponding to stream S of branch B is given by B * (num_input_ports) + S.

Property Propagation and Action Forwarding Behavior

The default behavior of the split stream block controller is to propagate properties received on a particular stream to all branches of that stream. For example, if a property is received at branch 0, stream B in the example above, that property will be propagated to stream B in branches 1 and 2 AND to stream B in the input. The property will not propagate across streams.

For actions, an action received on a particular stream is forwarded to that stream on all opposite branches. If in the example above, an action is received at branch 2, stream A, it will be forwarded to stream A on the input side. Similarly, if an action is received on stream B of the input, it will be forwarded to stream B on branches 0, 1, AND 2.

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The documentation for this class was generated from the following file:

• include/uhd/rfnoc/split_stream_block_control.hpp