#include <uhd/rfnoc/replay_block_control.hpp>
Public Member Functions | |
virtual void | record (const uint64_t offset, const uint64_t size, const size_t port=0)=0 |
virtual void | record_restart (const size_t port=0)=0 |
virtual void | play (const uint64_t offset, const uint64_t size, const size_t port=0, const uhd::time_spec_t time_spec=uhd::time_spec_t(0.0), const bool repeat=false)=0 |
virtual void | stop (const size_t port=0)=0 |
virtual uint64_t | get_mem_size () const =0 |
virtual uint64_t | get_word_size () const =0 |
virtual uint64_t | get_record_offset (const size_t port=0) const =0 |
virtual uint64_t | get_record_size (const size_t port=0) const =0 |
virtual uint64_t | get_record_fullness (const size_t port=0)=0 |
virtual uint64_t | get_record_position (const size_t port=0)=0 |
virtual io_type_t | get_record_type (const size_t port=0) const =0 |
virtual size_t | get_record_item_size (const size_t port=0) const =0 |
virtual bool | get_record_async_metadata (uhd::rx_metadata_t &metadata, const double timeout=0.1)=0 |
virtual uint64_t | get_play_offset (const size_t port=0) const =0 |
virtual uint64_t | get_play_size (const size_t port=0) const =0 |
virtual uint64_t | get_play_position (const size_t port=0)=0 |
virtual uint32_t | get_max_items_per_packet (const size_t port=0) const =0 |
virtual uint32_t | get_max_packet_size (const size_t port=0) const =0 |
virtual io_type_t | get_play_type (const size_t port=0) const =0 |
virtual size_t | get_play_item_size (const size_t port=0) const =0 |
virtual bool | get_play_async_metadata (uhd::async_metadata_t &metadata, const double timeout=0.1)=0 |
virtual void | set_record_type (const io_type_t type, const size_t port=0)=0 |
virtual void | config_play (const uint64_t offset, const uint64_t size, const size_t port=0)=0 |
virtual void | set_play_type (const io_type_t type, const size_t port=0)=0 |
virtual void | set_max_items_per_packet (const uint32_t ipp, const size_t port=0)=0 |
virtual void | set_max_packet_size (const uint32_t size, const size_t port=0)=0 |
virtual void | issue_stream_cmd (const uhd::stream_cmd_t &stream_cmd, const size_t port=0)=0 |
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 |
size_t | get_num_output_ports () const override |
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) |
size_t | get_chdr_hdr_len (const bool account_for_ts=true) const |
size_t | get_max_payload_size (const res_source_info &edge, const bool account_for_ts=true) |
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... | |
std::shared_ptr< mb_controller > | get_mb_controller () |
Public Member Functions inherited from uhd::rfnoc::node_t | |
node_t () | |
virtual | ~node_t () |
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 | |
static const uint16_t | MINOR_COMPAT |
static const uint16_t | MAJOR_COMPAT |
static const uint32_t | REPLAY_ADDR_W |
static const uint32_t | REPLAY_BLOCK_OFFSET |
static const uint32_t | REG_COMPAT_ADDR |
static const uint32_t | REG_MEM_SIZE_ADDR |
static const uint32_t | REG_REC_RESTART_ADDR |
static const uint32_t | REG_REC_BASE_ADDR_LO_ADDR |
static const uint32_t | REG_REC_BASE_ADDR_HI_ADDR |
static const uint32_t | REG_REC_BUFFER_SIZE_LO_ADDR |
static const uint32_t | REG_REC_BUFFER_SIZE_HI_ADDR |
static const uint32_t | REG_REC_FULLNESS_LO_ADDR |
static const uint32_t | REG_REC_FULLNESS_HI_ADDR |
static const uint32_t | REG_PLAY_BASE_ADDR_LO_ADDR |
static const uint32_t | REG_PLAY_BASE_ADDR_HI_ADDR |
static const uint32_t | REG_PLAY_BUFFER_SIZE_LO_ADDR |
static const uint32_t | REG_PLAY_BUFFER_SIZE_HI_ADDR |
static const uint32_t | REG_PLAY_CMD_NUM_WORDS_LO_ADDR |
static const uint32_t | REG_PLAY_CMD_NUM_WORDS_HI_ADDR |
static const uint32_t | REG_PLAY_CMD_TIME_LO_ADDR |
static const uint32_t | REG_PLAY_CMD_TIME_HI_ADDR |
static const uint32_t | REG_PLAY_CMD_ADDR |
static const uint32_t | REG_PLAY_WORDS_PER_PKT_ADDR |
static const uint32_t | REG_PLAY_ITEM_SIZE_ADDR |
static const uint32_t | REG_REC_POS_LO_ADDR |
static const uint32_t | REG_REC_POS_HI_ADDR |
static const uint32_t | REG_PLAY_POS_LO_ADDR |
static const uint32_t | REG_PLAY_POS_HI_ADDR |
static const uint32_t | REG_PLAY_CMD_FIFO_SPACE_ADDR |
static const uint32_t | PLAY_CMD_STOP |
static const uint32_t | PLAY_CMD_FINITE |
static const uint32_t | PLAY_CMD_CONTINUOUS |
Static Public Attributes inherited from uhd::rfnoc::node_t | |
static const size_t | ANY_PORT = size_t(~0) |
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 | forwarding_policy_t { forwarding_policy_t::ONE_TO_ONE, forwarding_policy_t::ONE_TO_FAN, forwarding_policy_t::ONE_TO_ALL_IN, forwarding_policy_t::ONE_TO_ALL_OUT, forwarding_policy_t::ONE_TO_ALL, forwarding_policy_t::DROP, forwarding_policy_t::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 | graph_mutex_callback_t = std::function< std::recursive_mutex &(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 > > |
Protected Types inherited from uhd::rfnoc::node_t | |
using | prop_ptrs_t = std::vector< 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) |
void | set_num_output_ports (const size_t num_ports) |
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) |
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) |
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... | |
Replay Block Control CLass
The Replay block records data to memory and plays back data from memory.
It is the responsibility of the user to manage the memory. Care must be taken to avoid unintentional overlaps in the memory across blocks and ports. Each port of the Replay block has access to the full memory space. This allows recording data on any input port of any Replay block and playback on any output port of any Replay block. The section of memory used by a record or play operation is controlled by setting the offset and size.
For both record and playback, the offset and the size must be aligned to the memory's word size. For playback, the size must also be aligned to the size of an item. An item is a single unit of data as defined by the data type of a port. For record, the data type is automatically determined by the connection to the upstream block by using the "type" edge property for the corresponding input port. For playback, this is automatically determined by the connection to the downstream block by using the "type" edge property for the corresponding output port. These can be explicitly set by the user, if necessary. It is the user's responsibility to manage the types of the individual record and the playback ports. Methods to get the word size and item sizes are provided to help calculate proper alignment.
One key configuration of playback is the packet size. Larger packet sizes provide for better throughput while smaller packet sizes provide for lower latency. By default, the "mtu" edge property of the output port is used to define the maximum packet size to achieve the best throughput to the downstream block without exceeding the supported packet size. The maximum packet size can be explicitly set in terms of bytes or number of items to allow users to tune the performance to suit their application.
User Properties:
Key | Description |
---|---|
record_offset | The base address for recordings (data will be written here). Will be set by record(). |
record_size | Size of the record buffer. Will be set by record(). |
play_offset | Base address for playback (streaming will start from here). Set by play() or config_play(). |
play_size | Size of the playback buffer. Set by play() or config_play(). |
payload_size | Size of outgoing packet payload (in bytes). Gets set by set_max_items_per_packet(). |
Edge properties:
Key | Description |
---|---|
type | Data type. On the input, it set by the upstream block (see get_record_type()). For output, it should be provided by set_play_type(). |
Before streaming data to the replay block, it must be configured to record by calling record(), which will also configure the size of the record buffer for the indicated input port. After calling this method, the block will accept incoming data until its record buffer is full (use the get_record_fullness() method to query the fullness). Unlike the radio, the replay block does not care about end-of-burst flags, and will not report underruns if subsequent packets are not streamed to this block back-to-back.
Once the record buffer is full, the block will no longer accept incoming data and will back-pressure. If, for example, the radio block is connected to the replay block, the radio could overrun in this scenario. By calling record() again, the write-pointer of the block is reset, and it will accept new data. To reset the write-pointer and buffer size to the same values as before, it is sufficient to call record_restart().
To playback data from a given port, there are two options with basically the same functionality: Either call config_play() to configure the playback region on memory, and then call issue_stream_cmd() to start streaming.
A shorthand version of this is to call play(), which is equivalent to calling config_play() and issue_stream_cmd() together.
In either case, the replay block will start streaming the requested number of samples, or until it is stopped. If a specific number of samples is requested, then it will tag the last outgoing packet with an end-of-burst flag. If more samples were requested than stored in the playback buffer, it will wrap around.
To stop a continuous playback, either call stop(), or issue a stream command with uhd::stream_cmd_t::STREAM_MODE_STOP_CONTINUOUS.
If this block receives TX or RX actions (uhd::rfnoc::tx_event_action_info o uhd::rfnoc::rx_event_action_info), it will store them in a circular buffer. The API calls get_record_async_metadata() and get_play_async_metadata() can be used to read them back out asynchronously. To avoid the block controller continously expanding in memory, the total number of messages that will be stored is limited. If this block receives more event info objects than it can store before get_record_async_metadata() or get_play_async_metadata() is called, the oldest message will be dropped.
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pure virtual |
Configure the offsets and size of the playback buffer region
Specifies a buffer area in the memory for playback. In order to begin playback on this region, a stream command must be issued.
offset | Memory offset of the data to be played. This value must be aligned to the size of the word in memory. Use get_word_size() to get the memory word size. |
size | Size of data to play back. This value must be aligned to the size of the memory word and item size. Use get_word_size() to get the memory word size and get_output_item_size() to get the item size. |
port | Which output port of the replay block to use |
uhd::value_error | if offset+size exceeds the available memory. |
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Get the maximum number of items in a packet
port | Which output port of the replay block to use |
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Get the maximum size of a packet
Returns the maximum size of a packet, inclusive of headers and payload.
port | Which output port of the replay block to use |
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Get the size of the memory
Returns the size of the shared memory space. Any record or playback buffers must be configured in this memory space.
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Return TX- (output-/playback-) related metadata.
The typical use case for this is when connecting Replay -> Radio for playback, the radio may produce information like 'underrun occurred'. When transmitting from a host using a uhd::tx_streamer, this information is returned as part of the uhd::tx_streamer::recv_async_msg() call, but when the data is streamed into the replay block, these metadata are stored inside the replay block until queried by this method.
metadata | A metadata object to store the information in. |
timeout | A timeout (in seconds) to wait before returning. |
metadata
.
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Get the current play item size
port | Which output port of the replay block to use |
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Get the offset of the current playback buffer
port | Which output port of the replay block to use |
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Get the current playback position
port | Which output port of the replay block to use |
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Get the current size of the playback space
port | Which output port of the replay block to use |
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Get the current play data type
port | Which output port of the replay block to use |
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Return RX- (input-/record-) related metadata.
The typical use case for this is when connecting Radio -> Replay for recording, the radio may produce information like 'overrun occurred'. When receiving to a host using a uhd::rx_streamer, this information is returned as part of the uhd::rx_streamer::recv() call, but when the data is streamed into the replay block, these metadata are stored inside the replay block until queried by this method.
metadata | A metadata object to store the information in. |
timeout | A timeout (in seconds) to wait before returning. |
metadata
.
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Get the fullness of the current record buffer
Returns the number of bytes that have been recorded in the record buffer. A record restart will reset this number back to 0.
port | Which input port of the replay block to use |
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Get the current record item size
port | Which input port of the replay block to use |
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Get the starting offset of the current record buffer
port | Which input port of the replay block to use |
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Get the current record position
port | Which output port of the replay block to use |
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Get the current size of the record space
port | Which input port of the replay block to use |
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Get the current record data type
port | Which input port of the replay block to use |
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Get the size of a memory word
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Issue a stream command to the replay block
Issue stream commands to start or stop playback from the configured playback buffer. Supports STREAM_MODE_START_CONTINUOUS to start continuous repeating playback, STREAM_MODE_NUM_SAMPS_AND_DONE to play the given number of samples once, and STREAM_MODE_STOP_CONTINUOUS to stop all playback immediately. If a time_spec is supplied, it is placed in the header of the first packet produced for that command. Commands are queued and executed in order. A STREAM_MODE_STOP_CONTINUOUS command will halt all playback and purge all commands in the queue for a given output port.
stream_cmd | The command to execute |
port | Which output port of the replay block to use |
uhd::op_failed | Too many commands are queued. |
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pure virtual |
Play back data.
The offset and size define what data is played back on an output port. It will stream out size
bytes of data, starting at memory offset offset
.
The data can be played once or repeated continuously until a stop command is issued. If a time_spec is supplied, it will be placed in the header of the first packet. Typically, this is used to tell a downstream Radio block when to start transmitting the data.
If the data type on the output port is not defined, this function will throw an error.
This is equivalent to calling config_play() with the same arguments for offset
, size
, and port
, and then calling issue_stream_cmd() with the same time spec, and either continuous streaming (if repeat
is true) or STREAM_MODE_START_NUM_SAMPS_AND_DONE if it is not.
offset | Memory offset of the data to be played. This value must be aligned to the size of the word in memory. Use get_word_size() to get the memory word size. |
size | Size of data to play back. This value must be aligned to the size of the memory word and item size. Use get_word_size() to get the memory word size and get_output_item_size() to get the item size. This value will be used for the num_samps component of the underlying stream command. |
port | Which output port of the replay block to use |
time_spec | Set the time for the first item. Any non-zero value is used to set the time in the header of the first packet. Most commonly, this is used to set the start time of a transmission. Note that this block will not wait for a time to occur, rather, it will tag the first outgoing packet with this time stamp. |
repeat | Determines whether the data should be played repeatedly or just once. If set to true, stop() must be called to stop the play back. |
uhd::value_error | if offset+size exceeds the available memory. |
uhd::op_failed | Too many play commands are queued. |
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pure virtual |
Record
Begin recording. The offset sets the starting location in memory and the size limits the length of the recording. The flow of data is controlled by upstream RFNoC blocks.
offset | Memory offset where to start recording the data. This value must be aligned to the memory word size. Use get_word_size() to get the size of the memory word. |
size | Size limit, in bytes. This value must be aligned to the memory word size and the item size. Use get_word_size() to get the size of the memory word and get_item_size() to get the item size. A value of 0 means to use all available space. |
port | Which input port of the replay block to use |
uhd::value_error | if offset+size exceeds the available memory. |
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Restarts recording from the record offset
This is a shortcut for calling record() again with the same arguments.
port | Which input port of the replay block to use |
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Set the maximum number of items in a packet
Sets the maximum number of items that can be in a packet's payload. An actual packet may be smaller in order to coerce to mtu values, or to align with memory word size.
ipp | Number of items per packet |
port | Which output port of the replay block to use |
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Set the maximum size of a packet
Sets the maximum packet size, inclusive of headers and payload. Cannot exceed the MTU for this block.
size | The size of the packet |
port | Which output port of the replay block to use |
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Explicitly set the current play data type
Sets the data type for items in the current play buffer for the given output port.
type | The data type |
port | Which output port of the replay block to use |
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Explicitly set the current record data type
Sets the data type for items in the current record buffer for the given input port.
type | The data type |
port | Which input port of the replay block to use |
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pure virtual |
Stops playback
Halts any currently executing play commands and cancels any other play commands that are waiting to be executed for that output port.
port | Which output port of the replay block to use |
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