patch-2.0.36 linux/drivers/isdn/isdn_audio.h

• Lines: 43
• Date: Sun Nov 15 10:32:59 1998
• Orig file: v2.0.35/linux/drivers/isdn/isdn_audio.h
• Orig date: Mon Aug 4 17:34:00 1997

diff -u --recursive --new-file v2.0.35/linux/drivers/isdn/isdn_audio.h linux/drivers/isdn/isdn_audio.h
@@ -1,8 +1,8 @@
-/* $Id: isdn_audio.h,v 1.5 1997/02/03 22:45:21 fritz Exp $
+/* $Id: isdn_audio.h,v 1.5.2.2 1998/11/05 22:11:39 fritz Exp $
 
  * Linux ISDN subsystem, audio conversion and compression (linklevel).
  *
- * Copyright 1994,95,96 by Fritz Elfert (fritz@wuemaus.franken.de)
+ * Copyright 1994-1998 by Fritz Elfert (fritz@isdn4linux.de)
  *
  * 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
@@ -19,6 +19,12 @@
  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  *
  * $Log: isdn_audio.h,v $
+ * Revision 1.5.2.2  1998/11/05 22:11:39  fritz
+ * Changed mail-address.
+ *
+ * Revision 1.5.2.1  1998/08/22 16:43:06  armin
+ * Added silence detection in audio receive mode (AT+VSD).
+ *
  * Revision 1.5  1997/02/03 22:45:21  fritz
  * Reformatted according CodingStyle
  *
@@ -51,6 +57,11 @@
 	int buf[DTMF_NPOINTS];
 } dtmf_state;
 
+typedef struct silence_state {
+        int state;
+        unsigned int idx;
+} silence_state;
+
 extern void isdn_audio_ulaw2alaw(unsigned char *, unsigned long);
 extern void isdn_audio_alaw2ulaw(unsigned char *, unsigned long);
 extern adpcm_state *isdn_audio_adpcm_init(adpcm_state *, int);
@@ -60,3 +71,6 @@
 extern void isdn_audio_calc_dtmf(modem_info *, unsigned char *, int, int);
 extern void isdn_audio_eval_dtmf(modem_info *);
 dtmf_state *isdn_audio_dtmf_init(dtmf_state *);
+extern void isdn_audio_calc_silence(modem_info *, unsigned char *, int, int);
+extern void isdn_audio_eval_silence(modem_info *);
+silence_state *isdn_audio_silence_init(silence_state *);