0
|
1 |
/* This file is part of the KDE project.
|
|
2 |
|
|
3 |
Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
|
|
4 |
|
|
5 |
This library is free software: you can redistribute it and/or modify
|
|
6 |
it under the terms of the GNU Lesser General Public License as published by
|
|
7 |
the Free Software Foundation, either version 2.1 or 3 of the License.
|
|
8 |
|
|
9 |
This library is distributed in the hope that it will be useful,
|
|
10 |
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
11 |
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
12 |
GNU Lesser General Public License for more details.
|
|
13 |
|
|
14 |
You should have received a copy of the GNU Lesser General Public License
|
|
15 |
along with this library. If not, see <http://www.gnu.org/licenses/>.
|
|
16 |
|
|
17 |
*/
|
|
18 |
|
|
19 |
#include "audioequalizer.h"
|
|
20 |
|
|
21 |
QT_BEGIN_NAMESPACE
|
|
22 |
|
|
23 |
using namespace Phonon;
|
|
24 |
using namespace Phonon::MMF;
|
|
25 |
|
|
26 |
/*! \class MMF::AudioEqualizer
|
|
27 |
\internal
|
|
28 |
*/
|
|
29 |
|
|
30 |
AudioEqualizer::AudioEqualizer(QObject *parent) : AbstractAudioEffect::AbstractAudioEffect(parent, createParams())
|
|
31 |
{
|
|
32 |
}
|
|
33 |
|
|
34 |
void AudioEqualizer::parameterChanged(const int pid,
|
|
35 |
const QVariant &value)
|
|
36 |
{
|
|
37 |
// There is no way to return an error from this function, so we just
|
|
38 |
// have to trap and ignore exceptions.
|
|
39 |
TRAP_IGNORE(static_cast<CAudioEqualizer *>(m_effect.data())->SetBandLevelL(pid, value.toInt()));
|
|
40 |
}
|
|
41 |
|
|
42 |
bool AudioEqualizer::activateOn(CPlayerType *player)
|
|
43 |
{
|
|
44 |
CAudioEqualizer *ptr = 0;
|
|
45 |
QT_TRAP_THROWING(ptr = CAudioEqualizer::NewL(*player));
|
|
46 |
m_effect.reset(ptr);
|
|
47 |
|
|
48 |
return true;
|
|
49 |
}
|
|
50 |
|
|
51 |
QList<EffectParameter> AudioEqualizer::createParams()
|
|
52 |
{
|
|
53 |
QList<EffectParameter> retval;
|
|
54 |
|
|
55 |
// We temporarily create an AudioPlayer, and run the effect on it, so
|
|
56 |
// we can extract the readonly data we need.
|
|
57 |
AudioPlayer dummyPlayer;
|
|
58 |
|
|
59 |
CAudioEqualizer *eqPtr = 0;
|
|
60 |
QT_TRAP_THROWING(eqPtr = CAudioEqualizer::NewL(*dummyPlayer.player());)
|
|
61 |
QScopedPointer<CAudioEqualizer> e(eqPtr);
|
|
62 |
|
|
63 |
TInt32 dbMin;
|
|
64 |
TInt32 dbMax;
|
|
65 |
e->DbLevelLimits(dbMin, dbMax);
|
|
66 |
|
|
67 |
const int bandCount = e->NumberOfBands();
|
|
68 |
|
|
69 |
for (int i = 0; i < bandCount; ++i) {
|
|
70 |
const qint32 hz = e->CenterFrequency(i);
|
|
71 |
|
|
72 |
const qint32 defVol = e->BandLevel(i);
|
|
73 |
|
|
74 |
retval.append(EffectParameter(i,
|
|
75 |
tr("Frequency band, %1 Hz").arg(hz),
|
|
76 |
EffectParameter::LogarithmicHint,
|
|
77 |
QVariant(qint32(defVol)),
|
|
78 |
QVariant(qint32(dbMin)),
|
|
79 |
QVariant(qint32(dbMax)),
|
|
80 |
QVariantList(),
|
|
81 |
QString()));
|
|
82 |
}
|
|
83 |
|
|
84 |
return retval;
|
|
85 |
}
|
|
86 |
|
|
87 |
QT_END_NAMESPACE
|