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
86
87
88
89
90
91
92
|
/***************************************************************************
TrackWriter.cpp - stream for inserting samples into a track
-------------------
begin : Feb 11 2001
copyright : (C) 2001 by Thomas Eschenbacher
email : Thomas Eschenbacher <thomas.eschenbacher@gmx.de>
***************************************************************************/
/***************************************************************************
* *
* 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. *
* *
***************************************************************************/
#include "config.h"
#include <QApplication>
#include "libkwave/InsertMode.h"
#include "libkwave/Track.h"
#include "libkwave/TrackWriter.h"
#include "libkwave/Utils.h"
/** minimum time between emitting the "progress()" signal [ms] */
#define MIN_PROGRESS_INTERVAL 100
//***************************************************************************
Kwave::TrackWriter::TrackWriter(Kwave::Track &track, Kwave::InsertMode mode,
sample_index_t left, sample_index_t right)
:Kwave::Writer(mode, left, right),
m_track(track), m_progress_time()
{
m_track.use();
m_progress_time.start();
}
//***************************************************************************
Kwave::TrackWriter::~TrackWriter()
{
flush();
m_track.release();
}
//***************************************************************************
bool Kwave::TrackWriter::write(const Kwave::SampleArray &buffer,
unsigned int &count)
{
if (count == 0) return true; // nothing to write
if ((m_mode == Kwave::Overwrite) && (m_position + count > m_last + 1)) {
// need clipping
count = Kwave::toUint(m_last + 1 - m_position);
// qDebug("TrackWriter::write() clipped to count=%u", count);
}
Q_ASSERT(count <= buffer.size());
// qDebug("TrackWriter[%p,%llu...%llu]::write(%llu ... %llu) (total=%llu)",
// static_cast<void *>(this),
// m_first, m_last,
// m_position, m_position + count - 1,
// m_position + count - m_first);
if (!m_track.writeSamples(m_mode, m_position, buffer, 0, count)) {
count = 0;
return false; /* out of memory */
}
m_position += count;
// fix m_last, this might be needed in Append and Insert mode
Q_ASSERT(m_position >= 1);
if ((m_mode == Kwave::Append) || (m_mode == Kwave::Insert)) {
if ((m_position - 1) > m_last) m_last = (m_position - 1);
}
count = 0;
// inform others that we proceeded
if (m_progress_time.elapsed() > MIN_PROGRESS_INTERVAL) {
m_progress_time.restart();
emit proceeded();
}
return true;
}
//***************************************************************************
//***************************************************************************
#include "moc_TrackWriter.cpp"
|
