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
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
|
/*
SPDX-FileCopyrightText: 2004 Matthieu Bedouet <mbedouet@no-log.org>
SPDX-FileCopyrightText: 1998-2008 Sebastian Trueg <trueg@k3b.org>
SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "k3blibsndfiledecoder.h"
#include "k3bplugin_i18n.h"
#include <config-k3b.h>
#include <QDebug>
#include <QFile>
#include <QStringList>
#include <math.h>
#include <stdio.h>
#include <sndfile.h>
K_PLUGIN_CLASS_WITH_JSON(K3bLibsndfileDecoderFactory, "k3blibsndfiledecoder.json")
class K3bLibsndfileDecoder::Private
{
public:
Private():
isOpen(false),
buffer(0),
bufferSize(0) {
format_info.name = 0;
}
SNDFILE *sndfile;
SF_INFO sndinfo;
SF_FORMAT_INFO format_info;
bool isOpen;
float* buffer;
int bufferSize;
};
K3bLibsndfileDecoder::K3bLibsndfileDecoder( QObject* parent )
: K3b::AudioDecoder( parent )
{
d = new Private();
}
K3bLibsndfileDecoder::~K3bLibsndfileDecoder()
{
delete d;
}
QString K3bLibsndfileDecoder::fileType() const
{
if( d->format_info.name )
return QString::fromLocal8Bit(d->format_info.name);
else
return "-";
}
bool K3bLibsndfileDecoder::openFile()
{
if( !d->isOpen ) {
cleanup();
d->sndinfo.format = 0;
d->sndfile = sf_open (QFile::encodeName(filename()), SFM_READ, &d->sndinfo);
if ( !d->sndfile ) {
qDebug() << "(K3bLibsndfileDecoder::openLibsndfileFile) : " << sf_strerror(d->sndfile);
return false;
}
else {
//retrieve infos (name, extension) about the format:
d->format_info.format = d->sndinfo.format & SF_FORMAT_TYPEMASK ;
sf_command (d->sndfile, SFC_GET_FORMAT_INFO, &d->format_info, sizeof (SF_FORMAT_INFO)) ;
d->isOpen = true;
qDebug() << "(K3bLibsndfileDecoder::openLibsndfileFile) " << d->format_info.name << " file opened ";
return true;
}
}
return d->isOpen;
}
bool K3bLibsndfileDecoder::analyseFileInternal( K3b::Msf& frames, int& samplerate, int& ch )
{
cleanup();
if( openFile() ) {
// check length of track
if ( d->sndinfo.frames <= 0 ) {
qDebug() << "(K3bLibsndfileDecoder::analyseFileInternal) Could not determine length of file "
<< filename() << Qt::endl;
cleanup();
return false;
}
else {
addMetaInfo( META_TITLE, sf_get_string(d->sndfile, SF_STR_TITLE) );
addMetaInfo( META_ARTIST, sf_get_string(d->sndfile, SF_STR_ARTIST) );
addMetaInfo( META_COMMENT, sf_get_string(d->sndfile, SF_STR_COMMENT) );
addTechnicalInfo( i18n("Channels"), QString::number(d->sndinfo.channels) );
addTechnicalInfo( i18n("Sampling Rate"), i18n("%1 Hz",d->sndinfo.samplerate) );
frames = (unsigned long)ceil(75.0 * d->sndinfo.frames / d->sndinfo.samplerate);
samplerate = d->sndinfo.samplerate;
ch = d->sndinfo.channels;
qDebug() << "(K3bLibsndfileDecoder) successfully analysed file: " << frames << " frames.";
cleanup();
return true;
}
}
else
return false;
}
bool K3bLibsndfileDecoder::initDecoderInternal()
{
cleanup();
return openFile();
}
int K3bLibsndfileDecoder::decodeInternal( char* data, int maxLen )
{
if( !d->buffer ) {
d->buffer = new float[maxLen];
d->bufferSize = maxLen/2;
}
int read = (int) sf_read_float(d->sndfile, d->buffer,d->bufferSize) ;
fromFloatTo16BitBeSigned( d->buffer, data, read );
read = read * 2;
if( read < 0 ) {
qDebug() << "(K3bLibsndfileDecoder::decodeInternal) Error: " << read;
return -1;
}
else if( read == 0 ) {
qDebug() << "(K3bLibsndfileDecoder::decodeInternal) successfully finished decoding.";
return 0;
}
else
return read;
}
bool K3bLibsndfileDecoder::seekInternal( const K3b::Msf& pos)
{
return ( sf_seek( d->sndfile, pos.pcmSamples(), SEEK_SET ) == 0 );
}
void K3bLibsndfileDecoder::cleanup()
{
if( d->isOpen ) {
qDebug() << "(K3bLibsndfileDecoder) cleaning up.";
sf_close( d->sndfile );
d->isOpen = false;
}
}
/********************************************************/
K3bLibsndfileDecoderFactory::K3bLibsndfileDecoderFactory( QObject* parent, const QVariantList& )
: K3b::AudioDecoderFactory( parent)
{
}
K3bLibsndfileDecoderFactory::~K3bLibsndfileDecoderFactory()
{
}
K3b::AudioDecoder* K3bLibsndfileDecoderFactory::createDecoder( QObject* parent ) const
{
return new K3bLibsndfileDecoder( parent );
}
bool K3bLibsndfileDecoderFactory::canDecode( const QUrl& url )
{
SF_INFO infos;
infos.format = 0;
SNDFILE* sndfile = sf_open (QFile::encodeName(url.toLocalFile()), SFM_READ, &infos);
//is it supported by libsndfile?
if ( !sndfile ) {
qDebug() << "(K3bLibsndfileDecoder) " << sf_strerror(sndfile);
return false;
}
else if ( infos.format ) {
//retrieve infos (name) about the format:
SF_FORMAT_INFO format_info;
format_info.format = infos.format & SF_FORMAT_TYPEMASK ;
sf_command (sndfile, SFC_GET_FORMAT_INFO, &format_info, sizeof (format_info)) ;
qDebug() << "(K3bLibsndfileDecoder) " << format_info.name << " file === OK === ";
sf_close( sndfile );
return true;
}
else {
qDebug() << "(K3bLibsndfileDecoder) " << url.toLocalFile() << "not supported";
sf_close( sndfile );
return false;
}
return false;
}
#include "k3blibsndfiledecoder.moc"
#include "moc_k3blibsndfiledecoder.cpp"
|
