Jack2  1.9.9
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Jack::JackMidiRawInputWriteQueue Class Reference

#include <JackMidiRawInputWriteQueue.h>

Inheritance diagram for Jack::JackMidiRawInputWriteQueue:
Jack::JackMidiWriteQueue

Public Member Functions

 JackMidiRawInputWriteQueue (JackMidiWriteQueue *write_queue, size_t max_packet_data=4096, size_t max_packets=1024)
 
EnqueueResult EnqueueEvent (jack_nframes_t time, size_t size, jack_midi_data_t *buffer)
 
size_t GetAvailableSpace ()
 
jack_nframes_t Process (jack_nframes_t boundary_frame=0)
 
- Public Member Functions inherited from Jack::JackMidiWriteQueue
EnqueueResult EnqueueEvent (jack_midi_event_t *event, jack_nframes_t frame_offset=0)
 

Protected Member Functions

virtual void HandleBufferFailure (size_t unbuffered_bytes, size_t total_bytes)
 
virtual void HandleEventLoss (jack_midi_event_t *event)
 
virtual void HandleIncompleteMessage (size_t total_bytes)
 
virtual void HandleInvalidStatusByte (jack_midi_data_t byte)
 
virtual void HandleUnexpectedSysexEnd (size_t total_bytes)
 

Additional Inherited Members

- Public Types inherited from Jack::JackMidiWriteQueue
enum  EnqueueResult {
  BUFFER_FULL, BUFFER_TOO_SMALL, EVENT_EARLY, EN_ERROR,
  OK
}
 

Detailed Description

This queue enqueues raw, unparsed MIDI packets, and outputs complete MIDI messages to a write queue.

Use this queue if the MIDI API you're interfacing with gives you raw MIDI bytes that must be parsed.

Definition at line 36 of file JackMidiRawInputWriteQueue.h.

Constructor & Destructor Documentation

JackMidiRawInputWriteQueue::JackMidiRawInputWriteQueue ( JackMidiWriteQueue write_queue,
size_t  max_packet_data = 4096,
size_t  max_packets = 1024 
)

Called to create a new raw input write queue. The write_queue argument is the queue to write parsed messages to. The optional max_packets argument specifies the number of packets that can be enqueued in the internal queue. The optional max_packet_data argument specifies the total number of MIDI bytes that can be put in the internal queue, AND the maximum size for an event that can be written to the write queue.

Definition at line 30 of file JackMidiRawInputWriteQueue.cpp.

Member Function Documentation

void JackMidiRawInputWriteQueue::HandleBufferFailure ( size_t  unbuffered_bytes,
size_t  total_bytes 
)
protectedvirtual

Override this method to specify what happens when there isn't enough room in the ringbuffer to contain a parsed event. The default method outputs an error message.

Definition at line 73 of file JackMidiRawInputWriteQueue.cpp.

void JackMidiRawInputWriteQueue::HandleEventLoss ( jack_midi_event_t event)
protectedvirtual

Override this method to specify what happens when a parsed event can't be written to the write queue because the event's size exceeds the total possible space in the write queue. The default method outputs an error message.

Definition at line 82 of file JackMidiRawInputWriteQueue.cpp.

void JackMidiRawInputWriteQueue::HandleIncompleteMessage ( size_t  total_bytes)
protectedvirtual

Override this method to specify what happens when an incomplete MIDI message is parsed. The default method outputs an error message.

Definition at line 91 of file JackMidiRawInputWriteQueue.cpp.

void JackMidiRawInputWriteQueue::HandleInvalidStatusByte ( jack_midi_data_t  byte)
protectedvirtual

Override this method to specify what happens when an invalid MIDI status byte is parsed. The default method outputs an error message.

Definition at line 99 of file JackMidiRawInputWriteQueue.cpp.

void JackMidiRawInputWriteQueue::HandleUnexpectedSysexEnd ( size_t  total_bytes)
protectedvirtual

Override this method to specify what happens when a sysex end byte is parsed without first parsing a sysex begin byte. The default method outputs an error message.

Definition at line 106 of file JackMidiRawInputWriteQueue.cpp.

Jack::JackMidiWriteQueue::EnqueueResult JackMidiRawInputWriteQueue::EnqueueEvent ( jack_nframes_t  time,
size_t  size,
jack_midi_data_t *  buffer 
)
virtual

Enqueues a data packet in the write queue of size bytes contained in buffer that will be sent the absolute time specified by time. This method should not block unless 1.) this write queue represents the actual outbound MIDI connection, 2.) the MIDI event is being sent now, meaning that time is less than or equal to now, and 3.) the method is not being called in the process thread. The method should return OK if the event was enqueued, BUFFER_FULL if the write queue isn't able to accept the event right now, BUFFER_TOO_SMALL if this write queue will never be able to accept the event because the event is too large, EVENT_EARLY if this queue cannot schedule events ahead of time, and EN_ERROR if an error occurs that cannot be specified by another return code.

Implements Jack::JackMidiWriteQueue.

Definition at line 60 of file JackMidiRawInputWriteQueue.cpp.

size_t JackMidiRawInputWriteQueue::GetAvailableSpace ( )

Returns the maximum size event that can be enqueued right now.

Definition at line 67 of file JackMidiRawInputWriteQueue.cpp.

jack_nframes_t JackMidiRawInputWriteQueue::Process ( jack_nframes_t  boundary_frame = 0)

The Process() method should be called each time the EnqueueEvent() method returns OK. The Process() method will return the next frame at which an event should be sent. The return value from Process() depends upon the result of writing bytes to the write queue:

-If the return value is '0', then all complete events have been sent successfully to the write queue. Don't call Process() again until another event has been enqueued.

-If the return value is a non-zero value, then it specifies the frame that a pending event is scheduled to sent at. If the frame is in the future, then Process() should be called again at that time; otherwise, Process() should be called as soon as the write queue will accept events again.

Definition at line 151 of file JackMidiRawInputWriteQueue.cpp.


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