From a6d58bb6052ac8cb01805a48c4ad2f129126116f Mon Sep 17 00:00:00 2001
From: tpearson <tpearson@283d02a7-25f6-0310-bc7c-ecb5cbfe19da>
Date: Wed, 24 Feb 2010 02:13:59 +0000
Subject: Added KDE3 version of kvirc

git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/applications/kvirc@1095341 283d02a7-25f6-0310-bc7c-ecb5cbfe19da
---
 src/modules/dcc/adpcmcodec.h | 59 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 59 insertions(+)
 create mode 100644 src/modules/dcc/adpcmcodec.h

(limited to 'src/modules/dcc/adpcmcodec.h')

diff --git a/src/modules/dcc/adpcmcodec.h b/src/modules/dcc/adpcmcodec.h
new file mode 100644
index 00000000..63343df0
--- /dev/null
+++ b/src/modules/dcc/adpcmcodec.h
@@ -0,0 +1,59 @@
+#ifndef _ADPCMCODEC_H_
+#define _ADPCMCODEC_H_
+//
+//   File : adpcmcodec.h
+//   Creation date : Wed Aug 22 19:12:46 2001 GMT by Szymon Stefanek
+//
+//   This file is part of the KVirc irc client distribution
+//   Code derived from adpcm.c : Intel ADPCM coder/decoder
+//   Adapted for the KVirc distribution by Szymon Stefanek (pragma at kvirc dot net)
+//   Last revision : 22 Aug 2001
+//   See kvi_adpcm.cpp for the complete copyright notice.
+//
+//
+// adpcm.h - include file for adpcm coder.
+//
+// Version 1.0, 7-Jul-92.
+//
+//
+// Average compression speed experiment: P166MMX 32MEG
+//
+// INPUT         | OUTPUT    | COMPRESSION TIME
+// ------------------------------------------------------------------------
+// shorts bytes  | bytes     | min msec.   avrg.    high peak (1 time)
+// ------------------------------------------------------------------------
+// 512    1024   | 256       | ~4          4          34
+// 1024   2048   | 512       | ~7          8          75
+// 2048   4096   | 1024      | ~13         15         175 (!!!)
+// 4096   8192   | 2048      | ~26         33         91
+// 8192   16384  | 4096      | ~57         80         220 (~1 sec of audio)
+// 16384  32768  | 8192      | ~110        250        290
+//
+
+#include <qstring.h> // fix for qtextstream.h
+#include "codec.h"
+
+typedef struct adpcm_state
+{
+    short valprev; /* Previous output value */
+    char  index;   /* Index into stepsize table */
+} ADPCM_state;
+
+
+class KviDccVoiceAdpcmCodec : public KviDccVoiceCodec
+{
+public:
+	KviDccVoiceAdpcmCodec();
+	virtual ~KviDccVoiceAdpcmCodec();
+private:
+	ADPCM_state * m_pEncodeState;
+	ADPCM_state * m_pDecodeState;
+public:
+	virtual void encode(KviDataBuffer * signal,KviDataBuffer * stream);
+	virtual void decode(KviDataBuffer * stream,KviDataBuffer * signal);
+	virtual int encodedFrameSize();
+	virtual int decodedFrameSize();
+};
+
+
+#endif //_ADPCMCODEC_H_
-- 
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