windows_mme_device.h

// SPDX-FileCopyrightText: © 2020 Alexandros Theodotou <alex@zrythm.org>
// SPDX-License-Identifier: LicenseRef-ZrythmLicense
/*
 * This file incorporates work covered by the following copyright and
 * permission notice:
 *
 * ---
 *
 * Copyright (C) 2015 Tim Mayberry <mojofunk@gmail.com>
 *
 * 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, see <https://www.gnu.org/licenses/>.
 *
 * ---
 */
 
#include "zrythm-config.h"
 
#ifdef _WIN32
 
#  ifndef __AUDIO_WINDOWS_MME_DEVICE_H__
#    define __AUDIO_WINDOWS_MME_DEVICE_H__
 
#    include <windows.h>
 
#    include "zix/ring.h"
#    include <stdint.h>
 
typedef struct AudioEngine AudioEngine;
typedef struct MidiEvent   MidiEvent;
 
#    define MIDI_BUFFER_SIZE 32768
#    define SYSEX_BUFFER_SIZE 32768
 
enum WindowsMmeDeviceFlow
{
  WINDOWS_MME_DEVICE_FLOW_OUTPUT,
  WINDOWS_MME_DEVICE_FLOW_INPUT,
};
 
typedef struct WindowsMmeDevice
{
  int is_input;
 
  int id;
 
  unsigned int manufacturer_id;
  unsigned int product_id;
  unsigned int driver_ver_major;
  unsigned int driver_ver_minor;
 
  char * name;
 
  int opened;
 
  int started;
 
  /* ---- INPUT ---- */
  HMIDIIN in_handle;
  MIDIHDR sysex_header;
 
  /* ---- OUTPUT ---- */
  HMIDIOUT out_handle;
 
  ZixRing * midi_ring;
 
  uint8_t sysex_buffer[SYSEX_BUFFER_SIZE];
 
} WindowsMmeDevice;
 
WindowsMmeDevice *
windows_mme_device_new (int input, int index);
 
int
windows_mme_device_open (WindowsMmeDevice * dev, int start);
 
int
windows_mme_device_close (WindowsMmeDevice * self, int free);
 
int
windows_mme_device_start (WindowsMmeDevice * self);
 
int
windows_mme_device_stop (WindowsMmeDevice * self);
 
void
windows_mme_device_input_cb (
  HMIDIIN   hMidiIn,
  UINT      wMsg,
  DWORD_PTR dwInstance,
  DWORD_PTR dwParam1,
  DWORD_PTR dwParam2);
 
int
windows_mme_device_dequeue_midi_event_struct (
  WindowsMmeDevice * self,
  uint64_t           timestamp_start,
  uint64_t           timestamp_end,
  MidiEvent *        ev);
 
int
windows_mme_device_dequeue_midi_event (
  WindowsMmeDevice * self,
  uint64_t           timestamp_start,
  uint64_t           timestamp_end,
  uint64_t *         timestamp,
  uint8_t *          midi_data,
  size_t *           data_size);
 
void
windows_mme_device_print_info (WindowsMmeDevice * dev);
 
void
windows_mme_device_free (WindowsMmeDevice * dev);
 
#  endif
#endif // _WIN32