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
|
/* This file is part of the KDE project.
Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
This library is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation, either version 2.1 or 3 of the License.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
#include "mediaobject.h"
#include "abstractaudioeffect.h"
#include "audioplayer.h"
#include "mmf_videoplayer.h"
QT_BEGIN_NAMESPACE
using namespace Phonon;
using namespace Phonon::MMF;
/*! \class MMF::AbstractAudioEffect
\internal
*/
/*! \namespace Phonon::MMF
\internal
*/
AbstractAudioEffect::AbstractAudioEffect(QObject *parent,
const QList<EffectParameter> ¶ms)
: MediaNode(parent)
, m_params(params)
, m_player(0)
{
}
QList<Phonon::EffectParameter> AbstractAudioEffect::parameters() const
{
// Convert from QList<MMF::EffectParameter> to QList<Phonon::EffectParameter>
QList<Phonon::EffectParameter> result;
EffectParameter param;
foreach (param, m_params)
result += param;
return result;
}
QVariant AbstractAudioEffect::parameterValue(const Phonon::EffectParameter &queriedParam) const
{
const QVariant &val = m_values.value(queriedParam.id());
if (val.isNull())
return queriedParam.defaultValue();
else
return val;
}
void AbstractAudioEffect::setParameterValue(const Phonon::EffectParameter ¶m,
const QVariant &newValue)
{
m_values.insert(param.id(), newValue);
if (m_effect.data()) {
const EffectParameter& internalParam = internalParameter(param.id());
int err = parameterChanged(internalParam, newValue);
TRAP(err, m_effect->ApplyL());
// TODO: handle audio effect errors
Q_UNUSED(err);
}
}
void AbstractAudioEffect::abstractPlayerChanged(AbstractPlayer *player)
{
m_player = qobject_cast<AbstractMediaPlayer *>(player);
m_effect.reset();
}
void AbstractAudioEffect::stateChanged(Phonon::State newState,
Phonon::State oldState)
{
if (Phonon::LoadingState == oldState
&& Phonon::LoadingState != newState)
createEffect();
}
void AbstractAudioEffect::connectMediaObject(MediaObject *mediaObject)
{
Q_ASSERT_X(!m_player, Q_FUNC_INFO, "Player already connected");
Q_ASSERT_X(!m_effect.data(), Q_FUNC_INFO, "Effect already created");
abstractPlayerChanged(mediaObject->abstractPlayer());
connect(mediaObject, SIGNAL(stateChanged(Phonon::State, Phonon::State)),
SLOT(stateChanged(Phonon::State, Phonon::State)));
connect(mediaObject, SIGNAL(abstractPlayerChanged(AbstractPlayer *)),
SLOT(abstractPlayerChanged(AbstractPlayer *)));
if (mediaObject->state() != Phonon::LoadingState)
createEffect();
}
void AbstractAudioEffect::disconnectMediaObject(MediaObject *mediaObject)
{
mediaObject->disconnect(this);
abstractPlayerChanged(0);
}
void AbstractAudioEffect::setEnabled(bool enabled)
{
TInt err = KErrNone;
if (enabled)
// TODO: handle audio effect errors
TRAP(err, m_effect->EnableL())
else
// TODO: handle audio effect errors
TRAP(err, m_effect->DisableL())
Q_UNUSED(err);
}
void AbstractAudioEffect::createEffect()
{
Q_ASSERT_X(m_player, Q_FUNC_INFO, "Invalid media player pointer");
if (AudioPlayer *audioPlayer = qobject_cast<AudioPlayer *>(m_player)) {
createEffect(audioPlayer->nativePlayer());
}
if (m_effect.data()) {
EffectParameter param;
int err = 0;
foreach (param, m_params) {
const QVariant value = parameterValue(param);
err = parameterChanged(param, value);
}
Q_UNUSED(err)
}
}
const MMF::EffectParameter& AbstractAudioEffect::internalParameter(int id) const
{
const EffectParameter *result = 0;
for (int i=0; i<m_params.count() && !result; ++i) {
if (m_params[i].id() == id)
result = &m_params[i];
}
Q_ASSERT_X(result, Q_FUNC_INFO, "Parameter not found");
return *result;
}
QT_END_NAMESPACE
|
