/*
 *  dolmetschctl
 *
 *
 *  Copyright (C) 2015 Christian Pointner <equinox@spreadspace.org>
 *
 *  This file is part of dolmetschctl.
 *
 *  dolmetschctl 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 3 of the License, or
 *  any later version.
 *
 *  dolmetschctl 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 dolmetschctl. If not, see <http://www.gnu.org/licenses/>.
 */

#ifndef DOLMETSCHCTL_mixer_h_INCLUDED
#define DOLMETSCHCTL_mixer_h_INCLUDED

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

#include "slist.h"

typedef u_int8_t midi_cmd_t[3];

typedef struct {
  char* name_;
  slist_t cmds_;
} lang_t;

typedef struct {
  u_int8_t* buf_;
  int len_;
  int write_idx_;
  void (*done_cb_)(void*);
  void* done_data_;
} task_t;

typedef struct {
  const char* name_;
  snd_rawmidi_t* output_;
  int pfd_count_;
  slist_t langs_;
  slist_t tasks_;
} mixer_t;

int mixer_init(mixer_t* x, const char* name, const char* device);
void mixer_print_langs(mixer_t* x);
int mixer_switch_lang(mixer_t* x, const char* lang, void (*done_cb)(void*), void* done_data);
void mixer_print_tasks(mixer_t* x);
int mixer_get_poll_fd_count(mixer_t* x);
int mixer_get_poll_fds(mixer_t* x, struct pollfd *pfds, int npfds);
int mixer_handle_revents(mixer_t* x, struct pollfd *pfds, int npfds);

#endif