Macros
#define	EXPORT __declspec(dllexport)

#define	SOUND_MAX_DEVICE_NAME 1024

#define	SOUND_MAX_DEVICES 256

#define	WAVE_IN_DEVICE_NAME "\\Device\\WaveIn"

#define	WAVE_IN_DEVICE_NAME_U L"\\Device\\WaveIn"

#define	WAVE_OUT_DEVICE_NAME "\\Device\\WaveOut"

#define	WAVE_OUT_DEVICE_NAME_U L"\\Device\\WaveOut"

#define	MIDI_IN_DEVICE_NAME "\\Device\\MidiIn"

#define	MIDI_IN_DEVICE_NAME_U L"\\Device\\MidiIn"

#define	MIDI_OUT_DEVICE_NAME "\\Device\\MidiOut"

#define	MIDI_OUT_DEVICE_NAME_U L"\\Device\\MidiOut"

#define	AUX_DEVICE_NAME "\\Device\\MMAux"

#define	AUX_DEVICE_NAME_U L"\\Device\\MMAux"

#define	IOCTL_SOUND_BASE FILE_DEVICE_SOUND

#define	IOCTL_WAVE_BASE 0x0000

#define	IOCTL_MIDI_BASE 0x0080

#define	IOCTL_AUX_BASE 0x0100

#define	IOCTL_WAVE_QUERY_FORMAT CTL_CODE(IOCTL_SOUND_BASE, IOCTL_WAVE_BASE + 0x0001, METHOD_BUFFERED, FILE_READ_ACCESS)

#define	IOCTL_WAVE_SET_FORMAT CTL_CODE(IOCTL_SOUND_BASE, IOCTL_WAVE_BASE + 0x0002, METHOD_BUFFERED, FILE_WRITE_ACCESS)

#define	IOCTL_WAVE_GET_CAPABILITIES CTL_CODE(IOCTL_SOUND_BASE, IOCTL_WAVE_BASE + 0x0003, METHOD_BUFFERED, FILE_READ_ACCESS)

#define	IOCTL_WAVE_SET_STATE CTL_CODE(IOCTL_SOUND_BASE, IOCTL_WAVE_BASE + 0x0004, METHOD_BUFFERED, FILE_WRITE_ACCESS)

#define	IOCTL_WAVE_GET_STATE CTL_CODE(IOCTL_SOUND_BASE, IOCTL_WAVE_BASE + 0x0005, METHOD_BUFFERED, FILE_WRITE_ACCESS)

#define	IOCTL_WAVE_GET_POSITION CTL_CODE(IOCTL_SOUND_BASE, IOCTL_WAVE_BASE + 0x0006, METHOD_BUFFERED, FILE_WRITE_ACCESS)

#define	IOCTL_WAVE_SET_VOLUME CTL_CODE(IOCTL_SOUND_BASE, IOCTL_WAVE_BASE + 0x0007, METHOD_BUFFERED, FILE_READ_ACCESS)

#define	IOCTL_WAVE_GET_VOLUME CTL_CODE(IOCTL_SOUND_BASE, IOCTL_WAVE_BASE + 0x0008, METHOD_BUFFERED, FILE_READ_ACCESS)

#define	IOCTL_WAVE_SET_PITCH CTL_CODE(IOCTL_SOUND_BASE, IOCTL_WAVE_BASE + 0x0009, METHOD_BUFFERED, FILE_WRITE_ACCESS)

#define	IOCTL_WAVE_GET_PITCH CTL_CODE(IOCTL_SOUND_BASE, IOCTL_WAVE_BASE + 0x000A, METHOD_BUFFERED, FILE_WRITE_ACCESS)

#define	IOCTL_WAVE_SET_PLAYBACK_RATE CTL_CODE(IOCTL_SOUND_BASE, IOCTL_WAVE_BASE + 0x000B, METHOD_BUFFERED, FILE_WRITE_ACCESS)

#define	IOCTL_WAVE_GET_PLAYBACK_RATE CTL_CODE(IOCTL_SOUND_BASE, IOCTL_WAVE_BASE + 0x000C, METHOD_BUFFERED, FILE_WRITE_ACCESS)

#define	IOCTL_WAVE_PLAY CTL_CODE(IOCTL_SOUND_BASE, IOCTL_WAVE_BASE + 0x000D, METHOD_IN_DIRECT, FILE_WRITE_ACCESS)

#define	IOCTL_WAVE_RECORD CTL_CODE(IOCTL_SOUND_BASE, IOCTL_WAVE_BASE + 0x000E, METHOD_OUT_DIRECT, FILE_WRITE_ACCESS)

#define	IOCTL_WAVE_BREAK_LOOP CTL_CODE(IOCTL_SOUND_BASE, IOCTL_WAVE_BASE + 0x000F, METHOD_BUFFERED, FILE_WRITE_ACCESS)

#define	IOCTL_WAVE_SET_LOW_PRIORITY CTL_CODE(IOCTL_SOUND_BASE, IOCTL_WAVE_BASE + 0x0010, METHOD_BUFFERED, FILE_WRITE_ACCESS)

#define	IOCTL_MIDI_GET_CAPABILITIES CTL_CODE(IOCTL_SOUND_BASE, IOCTL_MIDI_BASE + 0x0001, METHOD_BUFFERED, FILE_READ_ACCESS)

#define	IOCTL_MIDI_SET_STATE CTL_CODE(IOCTL_SOUND_BASE, IOCTL_MIDI_BASE + 0x0002, METHOD_BUFFERED, FILE_WRITE_ACCESS)

#define	IOCTL_MIDI_GET_STATE CTL_CODE(IOCTL_SOUND_BASE, IOCTL_MIDI_BASE + 0x0003, METHOD_BUFFERED, FILE_WRITE_ACCESS)

#define	IOCTL_MIDI_SET_VOLUME CTL_CODE(IOCTL_SOUND_BASE, IOCTL_MIDI_BASE + 0x0004, METHOD_BUFFERED, FILE_READ_ACCESS)

#define	IOCTL_MIDI_GET_VOLUME CTL_CODE(IOCTL_SOUND_BASE, IOCTL_MIDI_BASE + 0x0005, METHOD_BUFFERED, FILE_READ_ACCESS)

#define	IOCTL_MIDI_PLAY CTL_CODE(IOCTL_SOUND_BASE, IOCTL_MIDI_BASE + 0x0006, METHOD_BUFFERED, FILE_WRITE_ACCESS)

#define	IOCTL_MIDI_RECORD CTL_CODE(IOCTL_SOUND_BASE, IOCTL_MIDI_BASE + 0x0007, METHOD_BUFFERED, FILE_WRITE_ACCESS)

#define	IOCTL_MIDI_CACHE_PATCHES CTL_CODE(IOCTL_SOUND_BASE, IOCTL_MIDI_BASE + 0x0008, METHOD_BUFFERED, FILE_WRITE_ACCESS)

#define	IOCTL_MIDI_CACHE_DRUM_PATCHES CTL_CODE(IOCTL_SOUND_BASE, IOCTL_MIDI_BASE + 0x0009, METHOD_BUFFERED, FILE_WRITE_ACCESS)

#define	IOCTL_AUX_GET_CAPABILITIES CTL_CODE(IOCTL_SOUND_BASE, IOCTL_AUX_BASE + 0x0001, METHOD_BUFFERED, FILE_READ_ACCESS)

#define	IOCTL_AUX_SET_VOLUME CTL_CODE(IOCTL_SOUND_BASE, IOCTL_AUX_BASE + 0x0002, METHOD_BUFFERED, FILE_READ_ACCESS)

#define	IOCTL_AUX_GET_VOLUME CTL_CODE(IOCTL_SOUND_BASE, IOCTL_AUX_BASE + 0x0003, METHOD_BUFFERED, FILE_READ_ACCESS)

#define	IOCTL_SOUND_GET_CHANGED_VOLUME CTL_CODE(IOCTL_SOUND_BASE, IOCTL_AUX_BASE + 0x0004, METHOD_BUFFERED, FILE_READ_ACCESS)