//
// Written by Curtis Olson, started March 2001.
//
-// Copyright (C) 2001 Curtis L. Olson - curt@flightgear.org
+// Copyright (C) 2001 Curtis L. Olson - http://www.flightgear.org/~curt
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License as
//
// 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.
+// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
//
-// $Id$
#ifndef _MORSE_HXX
#define _MORSE_HXX
-#ifdef HAVE_CONFIG_H
-# include <config.h>
-#endif
-
+#include "soundgenerator.hxx"
#include <simgear/compiler.h>
-
-#include <plib/sl.h>
-#include <plib/sm.h>
-
-#include "soundmgr.hxx"
+#include <simgear/sound/soundmgr_openal.hxx>
// Quoting from http://www.kluft.com/~ikluft/ham/morse-intro.html by
// Hz for the VOR ident.
-static const char DI = '1';
-static const char DIT = '1';
-static const char DA = '2';
-static const char DAH = '2';
-static const char end = '0';
-
-static const int BYTES_PER_SECOND = 8000;
-// static const int BEAT_LENGTH = 240; // milleseconds (5 wpm)
-static const int BEAT_LENGTH = 92; // milleseconds (13 wpm)
-static const int TRANSITION_BYTES = (int)(0.005 * BYTES_PER_SECOND);
-static const int COUNT_SIZE = BYTES_PER_SECOND * BEAT_LENGTH / 1000;
-static const int DIT_SIZE = 2 * COUNT_SIZE; // 2 counts
-static const int DAH_SIZE = 4 * COUNT_SIZE; // 4 counts
-static const int SPACE_SIZE = 3 * COUNT_SIZE; // 3 counts
-static const int LO_FREQUENCY = 1020; // AIM 1-1-7 (f) specified in Hz
-static const int HI_FREQUENCY = 1350; // AIM 1-1-7 (f) specified in Hz
-
// manages everything we need to know for an individual sound sample
-class FGMorse {
+class FGMorse : public FGSoundGenerator {
private:
unsigned char cust_dit[ DIT_SIZE ] ;
unsigned char cust_dah[ DAH_SIZE ] ;
+ static FGMorse * _instance;
+
bool cust_init( const int freq );
+ // allocate and initialize sound samples
+ bool init();
public:
+ static const int BYTES_PER_SECOND = 22050;
+ // static const int BEAT_LENGTH = 240; // milleseconds (5 wpm)
+ static const int BEAT_LENGTH = 92; // milleseconds (13 wpm)
+ static const int TRANSITION_BYTES = (int)(0.005 * BYTES_PER_SECOND);
+ static const int COUNT_SIZE = BYTES_PER_SECOND * BEAT_LENGTH / 1000;
+ static const int DIT_SIZE = 2 * COUNT_SIZE; // 2 counts
+ static const int DAH_SIZE = 4 * COUNT_SIZE; // 4 counts
+ static const int SPACE_SIZE = 3 * COUNT_SIZE; // 3 counts
+ static const int LO_FREQUENCY = 1020; // AIM 1-1-7 (f) specified in Hz
+ static const int HI_FREQUENCY = 1350; // AIM 1-1-7 (f) specified in Hz
+
FGMorse();
~FGMorse();
- // allocate and initialize sound samples
- bool init();
+ static FGMorse * instance();
- // make a FGSimpleSound morse code transmission for the specified string
- FGSimpleSound *make_ident( const string& id,
- const int freq = LO_FREQUENCY );
+ // make a SimpleSound morse code transmission for the specified string
+ SGSoundSample *make_ident( const string& id,
+ const int freq = LO_FREQUENCY );
};
-/**
- * \relates FGMorse
- * Make a tone of specified freq and total_len with trans_len ramp in
- * and out and only the first len bytes with sound, the rest with
- * silence.
- * @param buf unsigned char pointer to sound buffer
- * @param freq desired frequency of tone
- * @param len length of tone within sound
- * @param total_len total length of sound (anything more than len is padded
- * with silence.
- * @param trans_len length of ramp up and ramp down to avoid audio "pop"
- */
-void make_tone( unsigned char *buf, int freq,
- int len, int total_len, int trans_len );
#endif // _MORSE_HXX