diff options
Diffstat (limited to 'libs/midi++2/midi++/fd_midiport.h')
-rw-r--r-- | libs/midi++2/midi++/fd_midiport.h | 94 |
1 files changed, 94 insertions, 0 deletions
diff --git a/libs/midi++2/midi++/fd_midiport.h b/libs/midi++2/midi++/fd_midiport.h new file mode 100644 index 0000000000..853af9d7b4 --- /dev/null +++ b/libs/midi++2/midi++/fd_midiport.h @@ -0,0 +1,94 @@ +/* + Copyright (C) 1999 Paul Barton-Davis + + 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., 675 Mass Ave, Cambridge, MA 02139, USA. + + $Id$ +*/ + +#ifndef __fd_midiport_h__ +#define __fd_midiport_h__ + +#include <vector> +#include <string> +#include <cerrno> + +#include <cerrno> +#include <fcntl.h> +#include <unistd.h> + +#include <midi++/port.h> +#include <midi++/port_request.h> + +namespace MIDI { + +class FD_MidiPort : public Port + +{ + public: + FD_MidiPort (PortRequest &req, + const std::string &dirpath, + const std::string &pattern); + + virtual ~FD_MidiPort () { + ::close (_fd); + } + + virtual int selectable() const; + static std::vector<std::string *> *list_devices (); + + protected: + int _fd; + virtual void open (PortRequest &req); + + virtual int write (byte *msg, size_t msglen) { + int nwritten; + + if ((_mode & O_ACCMODE) == O_RDONLY) { + return -EACCES; + } + + if (slowdown) { + return do_slow_write (msg, msglen); + } + + if ((nwritten = ::write (_fd, msg, msglen)) > 0) { + bytes_written += nwritten; + + if (output_parser) { + output_parser->raw_preparse + (*output_parser, msg, nwritten); + for (int i = 0; i < nwritten; i++) { + output_parser->scanner (msg[i]); + } + output_parser->raw_postparse + (*output_parser, msg, nwritten); + } + } + return nwritten; + } + + virtual int read (byte *buf, size_t max); + + private: + static std::string *midi_dirpath; + static std::string *midi_filename_pattern; + + int do_slow_write (byte *msg, unsigned int msglen); +}; + +}; /*namespace MIDI */ + +#endif // __fd_midiport_h__ |