Documentation

Wait until all events of the client are processed.

Get an event from the input buffer. If the input buffer is empty, then it is filled with data from the sequencer queue. If there is no data in the sequencer queue, then the process is either put to sleep (if the sequencer is operating in blocking mode), or we throw EAGAIN (if the sequence is operating in non-blocking mode).

We may also throw ENOSPC, which means that the sequencer queue over-run and some events were lost (this clears the input buffer).

Returns the number of events in the input buffer. If the input buffer is empty and the boolean argument is true, then try to fill the input buffer with data from the sequencer queue. See also: input.

Output an event and drain the buffer, if it became full. Throws exceptions. See also: outputDirect, outputBuffer, outputPending, drainOutput, dropOutput, extractOutput, removeEvents

Output an event without draining the buffer. Throws -EAGAIN if the buffer becomes full. See also output.

Output an event directly to the sequencer, NOT through the output buffer. If an error occurs, then we throw an exception. See also output.

Return the size (in bytes) of pending events on output buffer. See also output.

Extract the first event in output buffer. Throws an exception on error. See also output.

Remove the first event in output buffer. Throws an exception on error. See also output.

Drain output buffer to sequencer. This function drains all pending events on the output buffer. The function returns immediately after the events are sent to the queues regardless whether the events are processed or not. To get synchronization with the all event processes, use syncOutputQueue after calling this function. Throws an exception on error. See also: output, syncOutputQueue.

Remove events from both the user-space output buffer, and the kernel-space sequencer queue. See also: drainOutput, dropOutputBuffer, removeEvents.

Remove events from the user-space output buffer. See also: dropOutput.

Remove events from both the user-space input buffer, and the kernel-space sequencer queue. See also: dropInputBuffer, removeEvents.

Remove events from the user-space input buffer. See also: dropInput.

These are all 14 bit values.

Used for volume control: means do not change the volume.

Construct an ALSA sequencer event from very few information. Most fields are initialized with sensible defaults. You may use this as a start and alter its fields for your special needs.

 (Event.simple myAddr (Event.simpleNote 0 60 64)) {Event.dest = destAddr}

Make a note whose unspecified fields contain 0.