1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
|
/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */
/*
Sonic Visualiser
An audio file viewer and annotation editor.
Centre for Digital Music, Queen Mary, University of London.
This file copyright 2006 Chris Cannam.
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 the Free Software Foundation; either version 2 of the
License, or (at your option) any later version. See the file
COPYING included with this distribution for more information.
*/
#ifndef _DENSE_TIME_VALUE_MODEL_H_
#define _DENSE_TIME_VALUE_MODEL_H_
#include <QObject>
#include "Model.h"
/**
* Base class for models containing dense two-dimensional data (value
* against time). For example, audio waveform data. Other time-value
* plot data, especially if editable, will normally go into a
* SparseTimeValueModel instead even if regularly sampled.
*/
class DenseTimeValueModel : public Model
{
Q_OBJECT
public:
DenseTimeValueModel();
virtual ~DenseTimeValueModel();
/**
* Return the minimum possible value found in this model type.
* (That is, the minimum that would be valid, not the minimum
* actually found in a particular model).
*/
virtual float getValueMinimum() const = 0;
/**
* Return the minimum possible value found in this model type.
* (That is, the minimum that would be valid, not the minimum
* actually found in a particular model).
*/
virtual float getValueMaximum() const = 0;
/**
* Return the number of distinct channels for this model.
*/
virtual int getChannelCount() const = 0;
/**
* Get the specified set of samples from the given channel of the
* model in single-precision floating-point format. Return the
* number of samples actually retrieved.
* If the channel is given as -1, mix all available channels and
* return the result.
*/
virtual sv_frame_t getData(int channel, sv_frame_t start, sv_frame_t count,
float *buffer) const = 0;
/**
* Get the specified set of samples from given contiguous range
* of channels of the model in single-precision floating-point
* format. Return the number of sample frames actually retrieved.
*/
virtual sv_frame_t getMultiChannelData(int fromchannel, int tochannel,
sv_frame_t start, sv_frame_t count,
float **buffers) const = 0;
virtual bool canPlay() const { return true; }
virtual QString getDefaultPlayClipId() const { return ""; }
virtual QString toDelimitedDataStringSubset(QString delimiter, sv_frame_t f0, sv_frame_t f1) const;
QString getTypeName() const { return tr("Dense Time-Value"); }
};
#endif
|
