/**

 * Flag which has the @c true value when QuickTime is available and

 * initialized.

 */

static bool _quicktime_started = false;

/**

 * Initialize QuickTime if needed. This function sets the

 * #_quicktime_started flag to @c true if QuickTime is present in the system

 * and it was initialized properly.

 */

static void InitQuickTimeIfNeeded(void)

{

	OSStatus dummy;

	if (_quicktime_started) return;

	DEBUG(driver, 2, "qtmidi: initializing Quicktime");

	/* Be polite: check wether QuickTime is available and initialize it. */

	_quicktime_started =

		(noErr == Gestalt(gestaltQuickTime, &dummy)) &&

		(noErr == EnterMovies());

}

/** Possible states of the QuickTime music driver. */

enum {

	QT_STATE_IDLE, /**< No file loaded. */

	QT_STATE_PLAY, /**< File loaded, playing. */

	QT_STATE_STOP, /**< File loaded, stopped. */

};

static Movie _quicktime_movie;                  /**< Current QuickTime @c Movie. */

static byte  _quicktime_volume = 127;           /**< Current volume. */

static int   _quicktime_state  = QT_STATE_IDLE; /**< Current player state. */

/**

 * Maps OpenTTD volume to QuickTime notion of volume.

 */

#define VOLUME  ((short)((0x00FF & _quicktime_volume) << 1))

static void StopSong(void);