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// ------------------------------------------------------------------------
// midiio-raw.cpp: Input and output of raw MIDI streams using standard
// UNIX file operations.
// Copyright (C) 2000,2005 Kai Vehmanen
//
// Attributes:
// eca-style-version: 3
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2 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 General Public License for more details.
//
// You should have received a copy of the GNU 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 <cstdio>
#include <fcntl.h>
#include <unistd.h>
#include "midiio-raw.h"
#include "eca-logger.h"
MIDI_IO_RAW::MIDI_IO_RAW(const std::string& name) { label("rawmidi"); device_name_rep = name; }
MIDI_IO_RAW::~MIDI_IO_RAW(void) { if (is_open()) close(); }
void MIDI_IO_RAW::open(void)
{
int flags = 0;
switch(io_mode()) {
case io_read:
{
flags = O_RDONLY;
break;
}
case io_write:
{
flags = O_WRONLY;
break;
}
case io_readwrite:
{
flags = O_RDWR;
break;
}
}
if (nonblocking_mode() == true) flags |= O_NONBLOCK;
ECA_LOG_MSG(ECA_LOGGER::system_objects, "Opening midi device \"" + device_name_rep + "\".");
fd_rep = ::open(device_name_rep.c_str(), flags);
if (fd_rep < 0) {
toggle_open_state(false);
}
else {
toggle_open_state(true);
}
finished_rep = false;
}
void MIDI_IO_RAW::close(void)
{
::close(fd_rep);
toggle_open_state(false);
}
bool MIDI_IO_RAW::finished(void) const { return finished_rep; }
long int MIDI_IO_RAW::read_bytes(void* target_buffer, long int bytes)
{
/* note: ignore bytes, already read one byte at a time */
long int res = ::read(fd_rep, target_buffer, 1);
if (res >= 0) return res;
finished_rep = true;
return 0;
}
long int MIDI_IO_RAW::write_bytes(void* target_buffer, long int bytes)
{
long int res = ::write(fd_rep, target_buffer, bytes);
if (res >= 0) return res;
finished_rep = true;
return 0;
}
void MIDI_IO_RAW::set_parameter(int param,
std::string value)
{
switch (param) {
case 1:
label(value);
break;
case 2:
device_name_rep = value;
break;
}
}
std::string MIDI_IO_RAW::get_parameter(int param) const
{
switch (param) {
case 1:
return label();
case 2:
return device_name_rep;
}
return "";
}
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