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node.h File Reference
SPA » Node

spa/node/node.h More...

Go to the source code of this file.

## Data Structures

struct | spa_node
struct | spa_node_info
| Node information structure. More...
struct | spa_port_info
| Port information structure. More...
struct | spa_result_node_error
| an error result More...
struct | spa_result_node_params
| the result of enum_params or port_enum_params. More...
struct | spa_node_events
| events from the spa_node. More...
struct | spa_node_callbacks
| Node callbacks. More...
struct | spa_node_methods
| Node methods. More...

## Macros

#define | SPA_API_NODE static inline
#define | SPA_TYPE_INTERFACE_Node SPA_TYPE_INFO_INTERFACE_BASE "Node"
#define | SPA_VERSION_NODE 0
#define | SPA_NODE_CHANGE_MASK_FLAGS (1u<<0)
#define | SPA_NODE_CHANGE_MASK_PROPS (1u<<1)
#define | SPA_NODE_CHANGE_MASK_PARAMS (1u<<2)
#define | SPA_NODE_FLAG_RT (1u<<0)
| node can do real-time processing
#define | SPA_NODE_FLAG_IN_DYNAMIC_PORTS (1u<<1)
| input ports can be added/removed
#define | SPA_NODE_FLAG_OUT_DYNAMIC_PORTS (1u<<2)
| output ports can be added/removed
#define | SPA_NODE_FLAG_IN_PORT_CONFIG (1u<<3)
| input ports can be reconfigured with PortConfig parameter
#define | SPA_NODE_FLAG_OUT_PORT_CONFIG (1u<<4)
| output ports can be reconfigured with PortConfig parameter
#define | SPA_NODE_FLAG_NEED_CONFIGURE (1u<<5)
| node needs configuration before it can be started.
#define | SPA_NODE_FLAG_ASYNC (1u<<6)
| the process function might not immediately produce or consume data but might offload the work to a worker thread.
#define | SPA_NODE_INFO_INIT()
#define | SPA_PORT_CHANGE_MASK_FLAGS (1u<<0)
#define | SPA_PORT_CHANGE_MASK_RATE (1u<<1)
#define | SPA_PORT_CHANGE_MASK_PROPS (1u<<2)
#define | SPA_PORT_CHANGE_MASK_PARAMS (1u<<3)
#define | SPA_PORT_FLAG_REMOVABLE (1u<<0)
| port can be removed
#define | SPA_PORT_FLAG_OPTIONAL (1u<<1)
| processing on port is optional
#define | SPA_PORT_FLAG_CAN_ALLOC_BUFFERS (1u<<2)
| the port can allocate buffer data
#define | SPA_PORT_FLAG_IN_PLACE (1u<<3)
| the port can process data in-place and will need a writable input buffer
#define | SPA_PORT_FLAG_NO_REF (1u<<4)
| the port does not keep a ref on the buffer.
#define | SPA_PORT_FLAG_LIVE (1u<<5)
| output buffers from this port are timestamped against a live clock.
#define | SPA_PORT_FLAG_PHYSICAL (1u<<6)
| connects to some device
#define | SPA_PORT_FLAG_TERMINAL (1u<<7)
| data was not created from this port or will not be made available on another port
#define | SPA_PORT_FLAG_DYNAMIC_DATA (1u<<8)
| data pointer on buffers can be changed.
#define | SPA_PORT_INFO_INIT()
#define | SPA_RESULT_TYPE_NODE_ERROR 1
#define | SPA_RESULT_TYPE_NODE_PARAMS 2
#define | SPA_NODE_EVENT_INFO 0
#define | SPA_NODE_EVENT_PORT_INFO 1
#define | SPA_NODE_EVENT_RESULT 2
#define | SPA_NODE_EVENT_EVENT 3
#define | SPA_NODE_EVENT_NUM 4
#define | SPA_VERSION_NODE_EVENTS 0
#define | SPA_NODE_CALLBACK_READY 0
#define | SPA_NODE_CALLBACK_REUSE_BUFFER 1
#define | SPA_NODE_CALLBACK_XRUN 2
#define | SPA_NODE_CALLBACK_NUM 3
#define | SPA_VERSION_NODE_CALLBACKS 0
#define | SPA_NODE_PARAM_FLAG_TEST_ONLY (1 << 0)
| flags that can be passed to set_param and port_set_param functions
#define | SPA_NODE_PARAM_FLAG_FIXATE (1 << 1)
| Fixate the non-optional unset fields.
#define | SPA_NODE_PARAM_FLAG_NEAREST (1 << 2)
| Allow set fields to be rounded to the nearest allowed field value.
#define | SPA_NODE_BUFFERS_FLAG_ALLOC (1 << 0)
| flags to pass to the use_buffers functions
#define | SPA_NODE_METHOD_ADD_LISTENER 0
#define | SPA_NODE_METHOD_SET_CALLBACKS 1
#define | SPA_NODE_METHOD_SYNC 2
#define | SPA_NODE_METHOD_ENUM_PARAMS 3
#define | SPA_NODE_METHOD_SET_PARAM 4
#define | SPA_NODE_METHOD_SET_IO 5
#define | SPA_NODE_METHOD_SEND_COMMAND 6
#define | SPA_NODE_METHOD_ADD_PORT 7
#define | SPA_NODE_METHOD_REMOVE_PORT 8
#define | SPA_NODE_METHOD_PORT_ENUM_PARAMS 9
#define | SPA_NODE_METHOD_PORT_SET_PARAM 10
#define | SPA_NODE_METHOD_PORT_USE_BUFFERS 11
#define | SPA_NODE_METHOD_PORT_SET_IO 12
#define | SPA_NODE_METHOD_PORT_REUSE_BUFFER 13
#define | SPA_NODE_METHOD_PROCESS 14
#define | SPA_NODE_METHOD_NUM 15
#define | SPA_VERSION_NODE_METHODS 0

## Functions

SPA_API_NODE int | spa_node_add_listener (struct spa_node *object, struct spa_hook *listener, const struct spa_node_events *events, void *data)
SPA_API_NODE int | spa_node_set_callbacks (struct spa_node *object, const struct spa_node_callbacks *callbacks, void *data)
SPA_API_NODE int | spa_node_sync (struct spa_node *object, int seq)
SPA_API_NODE int | spa_node_enum_params (struct spa_node *object, int seq, uint32_t id, uint32_t start, uint32_t max, const struct spa_pod *filter)
SPA_API_NODE int | spa_node_set_param (struct spa_node *object, uint32_t id, uint32_t flags, const struct spa_pod *param)
SPA_API_NODE int | spa_node_set_io (struct spa_node *object, uint32_t id, void *data, size_t size)
SPA_API_NODE int | spa_node_send_command (struct spa_node *object, const struct spa_command *command)
SPA_API_NODE int | spa_node_add_port (struct spa_node *object, enum spa_direction direction, uint32_t port_id, const struct spa_dict *props)
SPA_API_NODE int | spa_node_remove_port (struct spa_node *object, enum spa_direction direction, uint32_t port_id)
SPA_API_NODE int | spa_node_port_enum_params (struct spa_node *object, int seq, enum spa_direction direction, uint32_t port_id, uint32_t id, uint32_t start, uint32_t max, const struct spa_pod *filter)
SPA_API_NODE int | spa_node_port_set_param (struct spa_node *object, enum spa_direction direction, uint32_t port_id, uint32_t id, uint32_t flags, const struct spa_pod *param)
SPA_API_NODE int | spa_node_port_use_buffers (struct spa_node *object, enum spa_direction direction, uint32_t port_id, uint32_t flags, struct spa_buffer **buffers, uint32_t n_buffers)
SPA_API_NODE int | spa_node_port_set_io (struct spa_node *object, enum spa_direction direction, uint32_t port_id, uint32_t id, void *data, size_t size)
SPA_API_NODE int | spa_node_port_reuse_buffer (struct spa_node *object, uint32_t port_id, uint32_t buffer_id)
SPA_API_NODE int | spa_node_port_reuse_buffer_fast (struct spa_node *object, uint32_t port_id, uint32_t buffer_id)
SPA_API_NODE int | spa_node_process (struct spa_node *object)
SPA_API_NODE int | spa_node_process_fast (struct spa_node *object)

## Detailed Description

spa/node/node.h