--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/spandsp-0.0.6pre17/src/spandsp/private/super_tone_rx.h	Fri Jun 25 15:50:58 2010 +0200
@@ -0,0 +1,67 @@
+/*
+ * SpanDSP - a series of DSP components for telephony
+ *
+ * private/super_tone_rx.h - Flexible telephony supervisory tone detection.
+ *
+ * Written by Steve Underwood <steveu@coppice.org>
+ *
+ * Copyright (C) 2003 Steve Underwood
+ *
+ * All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License version 2.1,
+ * as published by the Free Software Foundation.
+ *
+ * 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 Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ * $Id: super_tone_rx.h,v 1.1 2008/11/30 10:17:31 steveu Exp $
+ */
+
+#if !defined(_SPANDSP_PRIVATE_SUPER_TONE_RX_H_)
+#define _SPANDSP_PRIVATE_SUPER_TONE_RX_H_
+
+#define BINS            128
+
+struct super_tone_rx_segment_s
+{
+    int f1;
+    int f2;
+    int recognition_duration;
+    int min_duration;
+    int max_duration;
+};
+
+struct super_tone_rx_descriptor_s
+{
+    int used_frequencies;
+    int monitored_frequencies;
+    int pitches[BINS/2][2];
+    int tones;
+    super_tone_rx_segment_t **tone_list;
+    int *tone_segs;
+    goertzel_descriptor_t *desc;
+};
+
+struct super_tone_rx_state_s
+{
+    super_tone_rx_descriptor_t *desc;
+    float energy;
+    int detected_tone;
+    int rotation;
+    tone_report_func_t tone_callback;
+    void (*segment_callback)(void *data, int f1, int f2, int duration);
+    void *callback_data;
+    super_tone_rx_segment_t segments[11];
+    goertzel_state_t state[];
+};
+
+#endif
+/*- End of file ------------------------------------------------------------*/