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
|
/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 3 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL3 included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or (at your option) the GNU General
** Public license version 3 or any later version approved by the KDE Free
** Qt Foundation. The licenses are as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-2.0.html and
** https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef IOSAUDIOOUTPUT_H
#define IOSAUDIOOUTPUT_H
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists purely as an
// implementation detail. This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//
#include <private/qaudiosystem_p.h>
#if defined(Q_OS_OSX)
# include <CoreAudio/CoreAudio.h>
#endif
#include <AudioUnit/AudioUnit.h>
#include <CoreAudio/CoreAudioTypes.h>
#include <QtCore/QIODevice>
#include <QtCore/QWaitCondition>
#include <QtCore/QMutex>
#include <qdarwinaudiodevice_p.h>
QT_BEGIN_NAMESPACE
class QDarwinAudioSinkBuffer;
class QTimer;
class QCoreAudioDeviceInfo;
class CoreAudioRingBuffer;
class QDarwinAudioSinkBuffer : public QObject
{
Q_OBJECT
public:
QDarwinAudioSinkBuffer(int bufferSize, int maxPeriodSize, QAudioFormat const& audioFormat);
~QDarwinAudioSinkBuffer();
qint64 readFrames(char *data, qint64 maxFrames);
qint64 writeBytes(const char *data, qint64 maxSize);
int available() const;
void reset();
void setPrefetchDevice(QIODevice *device);
void startFillTimer();
void stopFillTimer();
signals:
void readyRead();
private slots:
void fillBuffer();
private:
bool m_deviceError;
int m_maxPeriodSize;
int m_bytesPerFrame;
int m_periodTime;
QIODevice *m_device;
QTimer *m_fillTimer;
CoreAudioRingBuffer *m_buffer;
};
class QDarwinAudioSinkDevice : public QIODevice
{
public:
QDarwinAudioSinkDevice(QDarwinAudioSinkBuffer *audioBuffer, QObject *parent);
qint64 readData(char *data, qint64 len);
qint64 writeData(const char *data, qint64 len);
bool isSequential() const { return true; }
private:
QDarwinAudioSinkBuffer *m_audioBuffer;
};
class QDarwinAudioSink : public QPlatformAudioSink
{
Q_OBJECT
public:
QDarwinAudioSink(const QAudioDevice &device);
~QDarwinAudioSink();
void start(QIODevice *device);
QIODevice *start();
void stop();
void reset();
void suspend();
void resume();
qsizetype bytesFree() const;
void setBufferSize(qsizetype value);
qsizetype bufferSize() const;
qint64 processedUSecs() const;
QAudio::Error error() const;
QAudio::State state() const;
void setFormat(const QAudioFormat &format);
QAudioFormat format() const;
void setVolume(qreal volume);
qreal volume() const;
private slots:
void deviceStopped();
void inputReady();
private:
enum {
Running,
Draining,
Stopped
};
static OSStatus renderCallback(void *inRefCon,
AudioUnitRenderActionFlags *ioActionFlags,
const AudioTimeStamp *inTimeStamp,
UInt32 inBusNumber,
UInt32 inNumberFrames,
AudioBufferList *ioData);
bool open();
void close();
void audioThreadStart();
void audioThreadStop();
void audioThreadDrain();
void audioDeviceStop();
void audioDeviceIdle();
void audioDeviceError();
void startTimers();
void stopTimers();
QAudioDevice m_audioDeviceInfo;
QByteArray m_device;
static constexpr int DEFAULT_BUFFER_SIZE = 8 * 1024;
bool m_isOpen = false;
int m_internalBufferSize = DEFAULT_BUFFER_SIZE;
int m_periodSizeBytes = 0;
qint64 m_totalFrames = 0;
QAudioFormat m_audioFormat;
QIODevice *m_audioIO = nullptr;
#if defined(Q_OS_MACOS)
AudioDeviceID m_audioDeviceId;
#endif
AudioUnit m_audioUnit = 0;
Float64 m_clockFrequency = 0;
AudioStreamBasicDescription m_streamFormat;
QDarwinAudioSinkBuffer *m_audioBuffer = nullptr;
QAtomicInt m_audioThreadState;
QWaitCondition m_threadFinished;
QMutex m_mutex;
qreal m_cachedVolume = 1.;
#if defined(Q_OS_MACOS)
qreal m_volume = 1.;
#endif
bool m_pullMode = false;
QAudio::Error m_errorCode = QAudio::NoError;
QAudio::State m_stateCode = QAudio::StoppedState;
};
QT_END_NAMESPACE
#endif // IOSAUDIOOUTPUT_H
|