summaryrefslogtreecommitdiffstats
path: root/src/plugins/symbian/mmf/mediaplayer/s60mediarecognizer.cpp
blob: d517f0e9171ca39f887186a30e39b92d76937a7d (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
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
/****************************************************************************
**
** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the Qt Mobility Components.
**
** $QT_BEGIN_LICENSE:LGPL$
** GNU Lesser General Public License Usage
** 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.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU General
** Public License version 3.0 as published by the Free Software Foundation
** and appearing in the file LICENSE.GPL included in the packaging of this
** file. Please review the following information to ensure the GNU General
** Public License version 3.0 requirements will be met:
** http://www.gnu.org/copyleft/gpl.html.
**
** Other Usage
** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/

#include "DebugMacros.h"

#include "s60mediarecognizer.h"
#include <e32def.h>
#include <e32cmn.h>
#include <QtCore/qurl.h>
#include <QtCore/qdir.h>
#include <QtCore/qdebug.h>

#include <apgcli.h>

static const TInt KMimeTypePrefixLength = 6; // "audio/" or "video/"

_LIT(KMimeTypePrefixAudio, "audio/");
_LIT(KMimeTypePrefixVideo, "video/");
_LIT(KMimeTypeRingingTone, "application/vnd.nokia.ringing-tone");

/*!
    Construct a media Recognizer with the given \a parent.
*/

S60MediaRecognizer::S60MediaRecognizer(QObject *parent) : QObject(parent)
{
    DP0("S60MediaRecognizer::S60MediaRecognizer +++");
    DP0("S60MediaRecognizer::S60MediaRecognizer ---");
}

/*!
    Destroys a media Recognizer.
*/

S60MediaRecognizer::~S60MediaRecognizer()
{
    DP0("S60MediaRecognizer::~S60MediaRecognizer +++");

    m_file.Close();
    m_fileServer.Close();
    m_recognizer.Close();

    DP0("S60MediaRecognizer::~S60MediaRecognizer ---");
}

/*!
 * \return media type of \a url.
 * \a url may be a streaming link or a local file.
 * If \a url is local file then identifies the media type and returns it.
*/

S60MediaRecognizer::MediaType S60MediaRecognizer::mediaType(const QUrl &url)
{
    DP0("S60MediaRecognizer::mediaType");

    bool isStream = (url.scheme() == "file")?false:true;

    if (isStream)
        return Url;
    else
        return identifyMediaType(QDir::cleanPath(url.toLocalFile()));
}

/*!
 * \return Media type of \a file name by recognizing its mimetype whether its audio or video.
*/

S60MediaRecognizer::MediaType S60MediaRecognizer::identifyMediaType(const QString& fileName)
{
    DP0("S60MediaRecognizer::identifyMediaType +++");

    DP1("S60MediaRecognizer::identifyMediaType - ", fileName);

    S60MediaRecognizer::MediaType result = Video; // default to videoplayer
    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 ||
                        mimeType.Compare(KMimeTypeRingingTone) == 0) {
                    result = Audio;
                } else if (mimeType.Left(KMimeTypePrefixLength).Compare(KMimeTypePrefixVideo) == 0) {
                    result = Video;
                }
            }
        }
    }

    DP0("S60MediaRecognizer::identifyMediaType ---");

    return result;
}

/*!
 * \return Symbian modifiable pointer descriptor from a QString \a string.
 */

TPtrC S60MediaRecognizer::QString2TPtrC( const QString& string )
{
    DP1("S60MediaRecognizer::QString2TPtrC - ", 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());
}