120 lines
2.8 KiB
C++
120 lines
2.8 KiB
C++
// ------------------------------------------------------------------------
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// midiio-raw.cpp: Input and output of raw MIDI streams using standard
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// UNIX file operations.
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// Copyright (C) 2000,2005 Kai Vehmanen
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//
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// Attributes:
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// eca-style-version: 3
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//
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// This program is free software; you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation; either version 2 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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// ------------------------------------------------------------------------
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#include <cstdio>
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#include <fcntl.h>
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#include <unistd.h>
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#include "midiio-raw.h"
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#include "eca-logger.h"
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MIDI_IO_RAW::MIDI_IO_RAW(const std::string& name) { label("rawmidi"); device_name_rep = name; }
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MIDI_IO_RAW::~MIDI_IO_RAW(void) { if (is_open()) close(); }
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void MIDI_IO_RAW::open(void)
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{
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int flags = 0;
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switch(io_mode()) {
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case io_read:
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{
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flags = O_RDONLY;
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break;
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}
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case io_write:
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{
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flags = O_WRONLY;
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break;
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}
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case io_readwrite:
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{
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flags = O_RDWR;
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break;
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}
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}
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if (nonblocking_mode() == true) flags |= O_NONBLOCK;
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ECA_LOG_MSG(ECA_LOGGER::system_objects, "Opening midi device \"" + device_name_rep + "\".");
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fd_rep = ::open(device_name_rep.c_str(), flags);
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if (fd_rep < 0) {
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toggle_open_state(false);
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}
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else {
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toggle_open_state(true);
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}
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finished_rep = false;
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}
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void MIDI_IO_RAW::close(void)
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{
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::close(fd_rep);
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toggle_open_state(false);
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}
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bool MIDI_IO_RAW::finished(void) const { return finished_rep; }
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long int MIDI_IO_RAW::read_bytes(void* target_buffer, long int bytes)
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{
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/* note: ignore bytes, already read one byte at a time */
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long int res = ::read(fd_rep, target_buffer, 1);
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if (res >= 0) return res;
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finished_rep = true;
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return 0;
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}
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long int MIDI_IO_RAW::write_bytes(void* target_buffer, long int bytes)
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{
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long int res = ::write(fd_rep, target_buffer, bytes);
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if (res >= 0) return res;
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finished_rep = true;
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return 0;
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}
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void MIDI_IO_RAW::set_parameter(int param,
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std::string value)
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{
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switch (param) {
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case 1:
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label(value);
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break;
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case 2:
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device_name_rep = value;
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break;
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}
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}
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std::string MIDI_IO_RAW::get_parameter(int param) const
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{
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switch (param) {
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case 1:
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return label();
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case 2:
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return device_name_rep;
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}
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return "";
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}
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