blob: b563dd992a48926bb8ea946deedb1218948dfc85 (
plain)
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
|
/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the plugins of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the Technology Preview License Agreement accompanying
** this package.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "S60mediarecognizer.h"
#include <e32def.h>
#include <e32cmn.h>
#include <QtCore/qurl.h>
#include <QtCore/qdir.h>
#include <QtCore/qdebug.h>
#include <apgcli.h>
QT_BEGIN_NAMESPACE
static const TInt KMimeTypePrefixLength = 6; // "audio/" or "video/"
_LIT(KMimeTypePrefixAudio, "audio/");
_LIT(KMimeTypePrefixVideo, "video/");
S60MediaRecognizer::S60MediaRecognizer(QObject *parent) : QObject(parent)
{
}
S60MediaRecognizer::~S60MediaRecognizer()
{
m_file.Close();
m_fileServer.Close();
m_recognizer.Close();
}
S60MediaRecognizer::MediaType S60MediaRecognizer::mediaType(const QUrl &url)
{
bool isStream = (url.scheme() == "file")?false:true;
if (isStream)
return Url;
else
return identifyMediaType(url.toLocalFile());
}
S60MediaRecognizer::MediaType S60MediaRecognizer::identifyMediaType(const QString& fileName)
{
S60MediaRecognizer::MediaType result = NotSupported;
bool recognizerOpened = false;
TInt err = m_recognizer.Connect();
if (err == KErrNone) {
recognizerOpened = true;
}
err = m_fileServer.Connect();
if (err == KErrNone) {
recognizerOpened = true;
}
// This is needed for sharing file handles for the recognizer
err = m_fileServer.ShareProtected();
if (err == KErrNone) {
recognizerOpened = true;
}
if (recognizerOpened) {
m_file.Close();
err = m_file.Open(m_fileServer, QString2TPtrC(QDir::toNativeSeparators(fileName)), EFileRead |
EFileShareReadersOnly);
if (err == KErrNone) {
TDataRecognitionResult recognizerResult;
err = m_recognizer.RecognizeData(m_file, recognizerResult);
if (err == KErrNone) {
const TPtrC mimeType = recognizerResult.iDataType.Des();
if (mimeType.Left(KMimeTypePrefixLength).Compare(KMimeTypePrefixAudio) == 0) {
result = Audio;
} else if (mimeType.Left(KMimeTypePrefixLength).Compare(KMimeTypePrefixVideo) == 0) {
result = Video;
}
}
}
}
return result;
}
TPtrC S60MediaRecognizer::QString2TPtrC( const QString& string )
{
// Returned TPtrC is valid as long as the given parameter is valid and unmodified
return TPtrC16(static_cast<const TUint16*>(string.utf16()), string.length());
}
QT_END_NAMESPACE
|
