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
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
|
/* This file is part of the KDE project.
Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
Copyright (C) 2008 Matthias Kretz <kretz@kde.org>
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 "common.h"
#include "audiooutput.h"
#include "backend.h"
#include "mediaobject.h"
#include "gsthelper.h"
#include <phonon/audiooutput.h>
QT_BEGIN_NAMESPACE
namespace Phonon
{
namespace Gstreamer
{
AudioOutput::AudioOutput(Backend *backend, QObject *parent)
: QObject(parent)
, MediaNode(backend, AudioSink)
, m_volumeLevel(1.0)
, m_device(0) // ### get from backend
, m_volumeElement(0)
, m_audioBin(0)
, m_audioSink(0)
, m_conv(0)
{
static int count = 0;
m_name = "AudioOutput" + QString::number(count++);
if (m_backend->isValid()) {
m_audioBin = gst_bin_new (NULL);
gst_object_ref (GST_OBJECT (m_audioBin));
gst_object_sink (GST_OBJECT (m_audioBin));
m_conv = gst_element_factory_make ("audioconvert", NULL);
// Get category from parent
Phonon::Category category = Phonon::NoCategory;
if (Phonon::AudioOutput *audioOutput = qobject_cast<Phonon::AudioOutput *>(parent))
category = audioOutput->category();
m_audioSink = m_backend->deviceManager()->createAudioSink(category);
m_volumeElement = gst_element_factory_make ("volume", NULL);
GstElement *queue = gst_element_factory_make ("queue", NULL);
GstElement *audioresample = gst_element_factory_make ("audioresample", NULL);
if (queue && m_audioBin && m_conv && audioresample && m_audioSink && m_volumeElement) {
gst_bin_add_many (GST_BIN (m_audioBin), queue, m_conv, audioresample, m_volumeElement, m_audioSink, (const char*)NULL);
if (gst_element_link_many (queue, m_conv, audioresample, m_volumeElement, m_audioSink, (const char*)NULL)) {
// Add ghost sink for audiobin
GstPad *audiopad = gst_element_get_pad (queue, "sink");
gst_element_add_pad (m_audioBin, gst_ghost_pad_new ("sink", audiopad));
gst_object_unref (audiopad);
m_isValid = true; // Initialization ok, accept input
}
}
}
}
void AudioOutput::mediaNodeEvent(const MediaNodeEvent *event)
{
if (!m_audioBin)
return;
switch (event->type()) {
default:
break;
}
}
AudioOutput::~AudioOutput()
{
if (m_audioBin) {
gst_element_set_state (m_audioBin, GST_STATE_NULL);
gst_object_unref (m_audioBin);
}
}
qreal AudioOutput::volume() const
{
return m_volumeLevel;
}
int AudioOutput::outputDevice() const
{
return m_device;
}
void AudioOutput::setVolume(qreal newVolume)
{
if (newVolume > 2.0 )
newVolume = 2.0;
else if (newVolume < 0.0)
newVolume = 0.0;
if (newVolume == m_volumeLevel)
return;
m_volumeLevel = newVolume;
if (m_volumeElement) {
g_object_set(G_OBJECT(m_volumeElement), "volume", newVolume, (const char*)NULL);
}
emit volumeChanged(newVolume);
}
bool AudioOutput::setOutputDevice(int newDevice)
{
m_backend->logMessage(Q_FUNC_INFO + QString::number(newDevice), Backend::Info, this);
if (newDevice == m_device)
return true;
if (root()) {
root()->saveState();
if (gst_element_set_state(root()->pipeline(), GST_STATE_READY) == GST_STATE_CHANGE_FAILURE)
return false;
}
bool success = false;
const QList<AudioDevice> deviceList = m_backend->deviceManager()->audioOutputDevices();
if (m_audioSink && newDevice >= 0 && newDevice < deviceList.size()) {
// Save previous state
GstState oldState = GST_STATE(m_audioSink);
const QByteArray oldDeviceValue = GstHelper::property(m_audioSink, "device");
const QByteArray deviceId = deviceList.at(newDevice).gstId;
m_device = newDevice;
// We test if the device can be opened by checking if it can go from NULL to READY state
gst_element_set_state(m_audioSink, GST_STATE_NULL);
success = GstHelper::setProperty(m_audioSink, "device", deviceId);
if (success) {
success = (gst_element_set_state(m_audioSink, oldState) == GST_STATE_CHANGE_SUCCESS);
}
if (!success) { // Revert state
m_backend->logMessage(Q_FUNC_INFO +
QLatin1String(" Failed to change device ") +
deviceId, Backend::Info, this);
GstHelper::setProperty(m_audioSink, "device", oldDeviceValue);
gst_element_set_state(m_audioSink, oldState);
} else {
m_backend->logMessage(Q_FUNC_INFO +
QLatin1String(" Successfully changed device ") +
deviceId, Backend::Info, this);
}
// Note the stopped state should not really be neccessary, but seems to be required to
// properly reset after changing the audio state
if (root()) {
QMetaObject::invokeMethod(root(), "setState", Qt::QueuedConnection, Q_ARG(State, StoppedState));
root()->resumeState();
}
}
return success;
}
#if (PHONON_VERSION >= PHONON_VERSION_CHECK(4, 2, 0))
bool AudioOutput::setOutputDevice(const AudioOutputDevice &newDevice)
{
m_backend->logMessage(Q_FUNC_INFO, Backend::Info, this);
if (!m_audioSink || !newDevice.isValid()) {
return false;
}
const QVariant driver = newDevice.property("driver");
if (!driver.isValid()) {
return setOutputDevice(newDevice.index());
}
if (newDevice.index() == m_device) {
return true;
}
if (root()) {
root()->saveState();
if (gst_element_set_state(root()->pipeline(), GST_STATE_READY) == GST_STATE_CHANGE_FAILURE)
return false;
}
// Save previous state
const GstState oldState = GST_STATE(m_audioSink);
const QByteArray oldDeviceValue = GstHelper::property(m_audioSink, "device");
const QByteArray sinkName = GstHelper::property(m_audioSink, "name");
if (sinkName == "alsasink" || sinkName == "alsasink2") {
if (driver.toByteArray() != "alsa") {
return false;
}
}
const QVariant deviceIdsProperty = newDevice.property("deviceIds");
QStringList deviceIds;
if (deviceIdsProperty.type() == QVariant::StringList) {
deviceIds = deviceIdsProperty.toStringList();
} else if (deviceIdsProperty.type() == QVariant::String) {
deviceIds += deviceIdsProperty.toString();
}
// We test if the device can be opened by checking if it can go from NULL to READY state
foreach (const QString &deviceId, deviceIds) {
gst_element_set_state(m_audioSink, GST_STATE_NULL);
if (GstHelper::setProperty(m_audioSink, "device", deviceId.toUtf8())) {
m_backend->logMessage(Q_FUNC_INFO + QLatin1String("setProperty(device,") +
deviceId + QLatin1String(") succeeded"), Backend::Info, this);
if (gst_element_set_state(m_audioSink, oldState) == GST_STATE_CHANGE_SUCCESS) {
m_backend->logMessage(Q_FUNC_INFO + QLatin1String("go to old state on device") +
deviceId + QLatin1String(" succeeded"), Backend::Info, this);
m_device = newDevice.index();
if (root()) {
QMetaObject::invokeMethod(root(), "setState", Qt::QueuedConnection, Q_ARG(State, StoppedState));
root()->resumeState();
}
return true;
} else {
m_backend->logMessage(Q_FUNC_INFO + QLatin1String("go to old state on device") +
deviceId + QLatin1String(" failed"), Backend::Info, this);
}
} else {
m_backend->logMessage(Q_FUNC_INFO + QLatin1String("setProperty(device,") +
deviceId + QLatin1String(") failed"), Backend::Info, this);
}
}
// Revert state
GstHelper::setProperty(m_audioSink, "device", oldDeviceValue);
gst_element_set_state(m_audioSink, oldState);
if (root()) {
QMetaObject::invokeMethod(root(), "setState", Qt::QueuedConnection, Q_ARG(State, StoppedState));
root()->resumeState();
}
return false;
}
#endif
}
} //namespace Phonon::Gstreamer
QT_END_NAMESPACE
#include "moc_audiooutput.cpp"
|
