JackFFADOMidiOutputPort.cpp
/*
Copyright (C) 2010 Devin Anderson
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include <memory>
#include "JackFFADOMidiOutputPort.h"
#include "JackMidiUtil.h"
#include "JackError.h"
using Jack::JackFFADOMidiOutputPort;
JackFFADOMidiOutputPort::JackFFADOMidiOutputPort(size_t non_rt_size,
size_t max_non_rt_messages,
size_t max_rt_messages)
{
event = 0;
read_queue = new JackMidiBufferReadQueue();
std::auto_ptr<JackMidiBufferReadQueue> read_queue_ptr(read_queue);
send_queue = new JackFFADOMidiSendQueue();
std::auto_ptr<JackFFADOMidiSendQueue> send_queue_ptr(send_queue);
raw_queue = new JackMidiRawOutputWriteQueue(send_queue, non_rt_size,
max_non_rt_messages,
max_rt_messages);
send_queue_ptr.release();
read_queue_ptr.release();
}
JackFFADOMidiOutputPort::~JackFFADOMidiOutputPort()
{
delete raw_queue;
delete read_queue;
delete send_queue;
}
void
JackFFADOMidiOutputPort::Process(JackMidiBuffer *port_buffer,
uint32_t *output_buffer,
jack_nframes_t frames)
{
read_queue->ResetMidiBuffer(port_buffer);
send_queue->ResetOutputBuffer(output_buffer, frames);
jack_nframes_t boundary_frame = GetLastFrame() + frames;
if (! event) {
event = read_queue->DequeueEvent();
}
for (; event; event = read_queue->DequeueEvent()) {
switch (raw_queue->EnqueueEvent(event)) {
case JackMidiWriteQueue::BUFFER_FULL:
// Processing events early might free up some space in the raw
// output queue.
raw_queue->Process(boundary_frame);
switch (raw_queue->EnqueueEvent(event)) {
case JackMidiWriteQueue::BUFFER_TOO_SMALL:
// This shouldn't really happen. It indicates a bug if it
// does.
jack_error("JackFFADOMidiOutputPort::Process - **BUG** "
"JackMidiRawOutputWriteQueue::EnqueueEvent "
"returned `BUFFER_FULL`, and then returned "
"`BUFFER_TOO_SMALL` after a `Process()` call.");
// Fallthrough on purpose
case JackMidiWriteQueue::OK:
continue;
default:
return;
}
case JackMidiWriteQueue::BUFFER_TOO_SMALL:
jack_error("JackFFADOMidiOutputPort::Process - The write queue "
"couldn't enqueue a %d-byte event. Dropping event.",
event->size);
// Fallthrough on purpose
case JackMidiWriteQueue::OK:
continue;
default:
// This is here to stop compliers from warning us about not
// handling enumeration values.
;
}
break;
}
raw_queue->Process(boundary_frame);
}
Jack::JackMidiBufferReadQueue::DequeueEvent
jack_midi_event_t * DequeueEvent()
Definition: JackMidiBufferReadQueue.cpp:33
Jack::JackMidiBufferReadQueue::ResetMidiBuffer
void ResetMidiBuffer(JackMidiBuffer *buffer)
Definition: JackMidiBufferReadQueue.cpp:48
jack_error
SERVER_EXPORT void jack_error(const char *fmt,...)
Definition: JackError.cpp:92
jack_midi_event_t::size
size_t size
Definition: JackMidiPort.h:36
Jack::JackFFADOMidiOutputPort
Definition: JackFFADOMidiOutputPort.h:29
Jack::JackMidiRawOutputWriteQueue::EnqueueEvent
EnqueueResult EnqueueEvent(jack_nframes_t time, size_t size, jack_midi_data_t *buffer)
Definition: JackMidiRawOutputWriteQueue.cpp:73
Jack::JackMidiRawOutputWriteQueue::Process
jack_nframes_t Process(jack_nframes_t boundary_frame=0)
Definition: JackMidiRawOutputWriteQueue.cpp:92