jack2/linux/alsarawmidi/JackALSARawMidiPort.h

/*
Copyright (C) 2011 Devin Anderson

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.

*/

#ifndef __JackALSARawMidiPort__
#define __JackALSARawMidiPort__

#include <alsa/asoundlib.h>
#include <poll.h>

#include "JackConstants.h"

namespace Jack {

    class JackALSARawMidiPort {

    private:

        char alias[REAL_JACK_PORT_NAME_SIZE];
        struct pollfd *alsa_poll_fds;
        int alsa_poll_fd_count;
        int fds[2];
        unsigned short io_mask;
        char name[REAL_JACK_PORT_NAME_SIZE];
        struct pollfd *queue_poll_fd;

    protected:

        snd_rawmidi_t *rawmidi;

        int
        GetIOPollEvent();

        int
        GetQueuePollEvent();

        void
        SetIOEventsEnabled(bool enabled);

        void
        SetQueueEventsEnabled(bool enabled);

        bool
        TriggerQueueEvent();

    public:

        JackALSARawMidiPort(snd_rawmidi_info_t *info, size_t index,
                            unsigned short io_mask);

        virtual
        ~JackALSARawMidiPort();

        const char *
        GetAlias();

        const char *
        GetName();

        int
        GetPollDescriptorCount();

        void
        PopulatePollDescriptors(struct pollfd *poll_fd);

    };

}

#endif