MayaFlux 0.4.0
Digital-First Multimedia Processing Framework
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MayaFlux::Nodes::ChainNode Class Reference

Connects an ordered sequence of nodes in series. More...

#include <NodeChain.hpp>

+ Inheritance diagram for MayaFlux::Nodes::ChainNode:
+ Collaboration diagram for MayaFlux::Nodes::ChainNode:

Public Member Functions

void append (const std::shared_ptr< Node > &node)
 Appends a node to the end of the chain.
 
void append_chain (const std::shared_ptr< ChainNode > &other)
 Appends all nodes from another chain.
 
 ChainNode (const std::shared_ptr< Node > &source, const std::shared_ptr< Node > &target)
 Creates a chain from two nodes (unmanaged)
 
 ChainNode (const std::shared_ptr< Node > &source, const std::shared_ptr< Node > &target, NodeGraphManager &manager, ProcessingToken token=ProcessingToken::AUDIO_RATE)
 Creates a chain from two nodes (managed)
 
 ChainNode (std::vector< std::shared_ptr< Node > > nodes)
 Creates a chain from an ordered sequence of nodes.
 
 ChainNode (std::vector< std::shared_ptr< Node > > nodes, NodeGraphManager &manager, ProcessingToken token=ProcessingToken::AUDIO_RATE)
 Creates a chain from an ordered sequence of nodes (managed)
 
NodeContextget_last_context () override
 Retrieves the last created context object.
 
void initialize ()
 Initializes the chain node.
 
bool is_initialized () const
 
const std::vector< std::shared_ptr< Node > > & nodes () const
 Returns a const reference to the internal node sequence.
 
void on_tick (const NodeHook &callback) override
 Registers a callback to be called on each tick.
 
void on_tick_if (const NodeCondition &condition, const NodeHook &callback) override
 Registers a conditional callback.
 
std::vector< double > process_batch (unsigned int num_samples) override
 Processes multiple samples at once.
 
double process_sample (double input=0.) override
 Processes a single data sample.
 
void remove_all_hooks () override
 Removes all registered callbacks.
 
void reset_processed_state () override
 Resets the processed state of the node and any attached input nodes.
 
void restore_state () override
 Restores the node's state from the last save Recursively cascades through all connected modulator nodes Protected - only NodeSourceProcessor and NodeBuffer can call.
 
void save_state () override
 Saves the node's current state for later restoration Recursively cascades through all connected modulator nodes Protected - only NodeSourceProcessor and NodeBuffer can call.
 
size_t size () const
 Returns the number of nodes in the chain.
 
- Public Member Functions inherited from MayaFlux::Nodes::Node
void add_buffer_reference ()
 Increments the buffer reference count This method is called when a new buffer starts using this node to ensure proper lifecycle management.
 
uint64_t get_active_snapshot_context () const
 Get the active snapshot context ID.
 
const std::atomic< uint32_t > & get_channel_mask () const
 Retrieves the current bitmask of active channels using this node.
 
uint32_t get_frame_rate () const
 
std::span< const float > get_gpu_data_buffer () const
 Provides access to the GPU data buffer.
 
virtual double get_last_output ()
 Retrieves the most recent output value produced by the node.
 
RoutingStateget_routing_state ()
 Retrieves the current routing state of the network (non-const)
 
const RoutingStateget_routing_state () const
 Retrieves the current routing state of the network.
 
uint32_t get_sample_rate () const
 
bool has_active_snapshot () const
 Check if node is currently being snapshotted by any context.
 
bool has_capability (NodeCapability cap) const
 Query a single capability.
 
bool is_buffer_processed () const
 Checks if the buffer has been processed.
 
bool is_gpu_compatible () const
 Checks if the node supports GPU processing.
 
bool is_in_network () const
 Sets whether the node is part of a NodeNetwork.
 
bool is_in_snapshot_context (uint64_t context_id) const
 Check if currently in a snapshot context.
 
bool is_used_by_channel (uint32_t channel_id) const
 Checks if the node is currently used by a specific channel.
 
bool mark_buffer_processed ()
 Marks the node as having been processed by a buffer.
 
bool needs_channel_routing () const
 Checks if the network is currently in a routing transition phase.
 
virtual uint8_t node_capabilities () const
 Declare which data shapes this node's context can produce.
 
void register_channel_usage (uint32_t channel_id)
 Mark the specificed channel as a processor/user.
 
void release_snapshot_context (uint64_t context_id)
 Release snapshot context.
 
void remove_buffer_reference ()
 Decrements the buffer reference count This method is called when a buffer stops using this node to ensure proper lifecycle management.
 
virtual bool remove_conditional_hook (const NodeCondition &callback)
 Removes a previously registered conditional callback.
 
virtual bool remove_hook (const NodeHook &callback)
 Removes a previously registered callback.
 
void request_buffer_reset ()
 Requests a reset of the buffer state.
 
void request_reset_from_channel (uint32_t channel_id)
 Requests a reset of the processed state from a specific channel.
 
void set_frame_rate (uint32_t frame_rate)
 
virtual void set_gpu_compatible (bool compatible)
 Sets whether the node is compatible with GPU processing.
 
void set_in_network (bool networked)
 Marks the node as being part of a NodeNetwork.
 
void set_sample_rate (uint32_t sample_rate)
 
bool try_claim_snapshot_context (uint64_t context_id)
 Attempt to claim snapshot context for this processing cycle.
 
void unregister_channel_usage (uint32_t channel_id)
 Removes the specified channel from the usage tracking.
 
virtual ~Node ()=default
 Virtual destructor for proper cleanup of derived classes.
 

Protected Member Functions

void notify_tick (double) override
 Notifies all registered callbacks with the current context.
 
void update_context (double) override
 Updates the context object with the current node state.
 
- Protected Member Functions inherited from MayaFlux::Nodes::Node
virtual void reset_processed_state_internal ()
 Resets the processed state of the node directly.
 

Private Attributes

bool m_is_initialized {}
 
NodeGraphManagerm_manager {}
 
std::vector< std::shared_ptr< Node > > m_nodes
 
bool m_state_saved {}
 
ProcessingToken m_token { ProcessingToken::AUDIO_RATE }
 

Additional Inherited Members

- Public Attributes inherited from MayaFlux::Nodes::Node
bool m_fire_events_during_snapshot = false
 Internal flag controlling whether notify_tick fires during state snapshots Default: false (events don't fire during isolated buffer processing) Can be exposed in future if needed via concrete implementation in parent.
 
std::atomic< uint32_t > m_modulator_count { 0 }
 Counter tracking how many other nodes are using this node as a modulator.
 
std::atomic< NodeStatem_state { NodeState::INACTIVE }
 Atomic state flag tracking the node's processing status.
 
- Protected Attributes inherited from MayaFlux::Nodes::Node
std::vector< NodeHookm_callbacks
 Collection of standard callback functions.
 
std::vector< std::pair< NodeHook, NodeCondition > > m_conditional_callbacks
 Collection of conditional callback functions with their predicates.
 
uint32_t m_frame_rate { 60 }
 Frame rate for time-based processing, used for normalization.
 
bool m_gpu_compatible {}
 Flag indicating if the node supports GPU processing This flag is set by derived classes to indicate whether the node can be processed on the GPU.
 
std::vector< float > m_gpu_data_buffer
 GPU data buffer for context objects.
 
double m_last_output { 0 }
 The most recent sample value generated by this oscillator.
 
bool m_networked_node {}
 Flag indicating if the node is part of a NodeNetwork This flag is used to disable event firing when the node is managed within a NodeNetwork, preventing redundant or conflicting event notifications.
 
uint8_t m_node_capability { NodeCapability::SCALAR }
 Bitmask of capabilities declared by this node.
 
uint32_t m_sample_rate { 48000 }
 Sample rate for audio processing, used for normalization.
 
bool m_state_saved {}
 tracks if the node's state has been saved by a snapshot operation
 
uint32_t m_timing_rate { m_sample_rate }
 Current timing rate for the node, used for timing calculations (can be sample rate or frame rate)
 

Detailed Description

Connects an ordered sequence of nodes in series.

ChainNode represents a sequential processing chain of arbitrary length. The output of each node becomes the input to the next.

When a NodeGraphManager is provided at construction, initialize() handles registration and semantics application through the manager directly. Without a manager, initialize() only sets internal state, suitable for manual processing or Lila contexts that manage their own graph.

The >> operator (defined in API/Graph.hpp) detects existing ChainNodes and appends to the sequence rather than creating nested chains.

Definition at line 26 of file NodeChain.hpp.


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