KVIrc 5.2.0
Developer APIs
DccVoiceAdpcmCodec.h
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1#ifndef _ADPCMCODEC_H_
2#define _ADPCMCODEC_H_
3//=============================================================================
4//
5// File : DccVoiceAdpcmCodec.h
6// Creation date : Wed Aug 22 19:12:46 2001 GMT by Szymon Stefanek
7//
8// This file is part of the KVIrc IRC client distribution
9// Copyright (C) 2001-2010 Szymon Stefanek (pragma at kvirc dot net)
10//
11// This program is FREE software. You can redistribute it and/or
12// modify it under the terms of the GNU General Public License
13// as published by the Free Software Foundation; either version 2
14// of the License, or (at your option) any later version.
15//
16// This program is distributed in the HOPE that it will be USEFUL,
17// but WITHOUT ANY WARRANTY; without even the implied warranty of
18// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
19// See the GNU General Public License for more details.
20//
21// You should have received a copy of the GNU General Public License
22// along with this program. If not, write to the Free Software Foundation,
23// Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
24//
25//=============================================================================
26//
27// adpcm.h - include file for adpcm coder.
28//
29// Version 1.0, 7-Jul-92.
30//
31//
32// Average compression speed experiment: P166MMX 32MEG
33//
34// INPUT | OUTPUT | COMPRESSION TIME
35// ------------------------------------------------------------------------
36// shorts bytes | bytes | min msec. avrg. high peak (1 time)
37// ------------------------------------------------------------------------
38// 512 1024 | 256 | ~4 4 34
39// 1024 2048 | 512 | ~7 8 75
40// 2048 4096 | 1024 | ~13 15 175 (!!!)
41// 4096 8192 | 2048 | ~26 33 91
42// 8192 16384 | 4096 | ~57 80 220 (~1 sec of audio)
43// 16384 32768 | 8192 | ~110 250 290
44//
45
46#include <QString> // fix for qtextstream.h
47
48#include "DccVoiceCodec.h"
49
51{
52 short valprev; /* Previous output value */
53 char index; /* HelpIndex into stepsize table */
54};
55
57{
58public:
60 virtual ~DccVoiceAdpcmCodec();
61
62private:
65
66public:
67 virtual void encode(KviDataBuffer * signal, KviDataBuffer * stream);
68 virtual void decode(KviDataBuffer * stream, KviDataBuffer * signal);
69 virtual int encodedFrameSize();
70 virtual int decodedFrameSize();
71};
72
73#endif //_ADPCMCODEC_H_
Definition DccVoiceAdpcmCodec.h:57
virtual int decodedFrameSize()
Definition DccVoiceAdpcmCodec.cpp:328
ADPCM_state * m_pEncodeState
Definition DccVoiceAdpcmCodec.h:63
ADPCM_state * m_pDecodeState
Definition DccVoiceAdpcmCodec.h:64
virtual ~DccVoiceAdpcmCodec()
Definition DccVoiceAdpcmCodec.cpp:270
virtual void decode(KviDataBuffer *stream, KviDataBuffer *signal)
Definition DccVoiceAdpcmCodec.cpp:299
virtual void encode(KviDataBuffer *signal, KviDataBuffer *stream)
Definition DccVoiceAdpcmCodec.cpp:276
virtual int encodedFrameSize()
Definition DccVoiceAdpcmCodec.cpp:323
DccVoiceAdpcmCodec()
Definition DccVoiceAdpcmCodec.cpp:258
Definition DccVoiceCodec.h:36
Definition KviDataBuffer.h:31
Definition DccVoiceAdpcmCodec.h:51
short valprev
Definition DccVoiceAdpcmCodec.h:52
char index
Definition DccVoiceAdpcmCodec.h:53