1 /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
2 
3 /*
4     QM DSP Library
5 
6     Centre for Digital Music, Queen Mary, University of London.
7     This file 2005-2006 Christian Landone.
8 
9     This program is free software; you can redistribute it and/or
10     modify it under the terms of the GNU General Public License as
11     published by the Free Software Foundation; either version 2 of the
12     License, or (at your option) any later version.  See the file
13     COPYING included with this distribution for more information.
14 */
15 
16 #ifndef QM_DSP_FRAMER_H
17 #define QM_DSP_FRAMER_H
18 
19 #include <stdint.h>
20 
21 class Framer
22 {
23 public:
24     Framer();
25     virtual ~Framer();
26 
27     void setSource(double* src, int64_t length);
28     void configure(int frameLength, int hop);
29 
30     int getMaxNoFrames();
31     void getFrame(double* dst);
32 
33     void resetCounters();
34 
35 private:
36     int64_t m_sampleLen;          // DataLength (samples)
37     int m_framesRead;             // Read Frames Index
38 
39     double* m_srcBuffer;
40     double* m_dataFrame;          // Analysis Frame Buffer
41     double* m_strideFrame;        // Stride Frame Buffer
42     int m_frameLength;            // Analysis Frame Length
43     int m_stepSize;               // Analysis Frame Stride
44 
45     int m_maxFrames;
46 
47     int64_t m_srcIndex;
48 };
49 
50 #endif
51