blob: 7bf337ef077404bb68edc8fcea5e6cc2181c4147 (
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
|
/****************************************************************************
**
** Copyright (C) 2013 Research In Motion
** Contact: http://www.qt.io/licensing/
**
** This file is part of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL21$
** 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 http://www.qt.io/terms-conditions. For further
** information use the contact form at http://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 2.1 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** LICENSE.LGPLv3 included in the packaging of this file. Please review the
** following information to ensure the GNU Lesser General Public License
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** As a special exception, The Qt Company gives you certain additional
** rights. These rights are described in The Qt Company LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "qnxaudioutils.h"
QT_BEGIN_NAMESPACE
snd_pcm_channel_params_t QnxAudioUtils::formatToChannelParams(const QAudioFormat &format, QAudio::Mode mode, int fragmentSize)
{
snd_pcm_channel_params_t params;
memset(¶ms, 0, sizeof(params));
params.channel = (mode == QAudio::AudioOutput) ? SND_PCM_CHANNEL_PLAYBACK : SND_PCM_CHANNEL_CAPTURE;
params.mode = SND_PCM_MODE_BLOCK;
params.start_mode = SND_PCM_START_DATA;
params.stop_mode = SND_PCM_STOP_ROLLOVER;
params.buf.block.frag_size = fragmentSize;
params.buf.block.frags_min = 1;
params.buf.block.frags_max = 1;
strcpy(params.sw_mixer_subchn_name, "QAudio Channel");
params.format.interleave = 1;
params.format.rate = format.sampleRate();
params.format.voices = format.channelCount();
switch (format.sampleSize()) {
case 8:
switch (format.sampleType()) {
case QAudioFormat::SignedInt:
params.format.format = SND_PCM_SFMT_S8;
break;
case QAudioFormat::UnSignedInt:
params.format.format = SND_PCM_SFMT_U8;
break;
default:
break;
}
break;
case 16:
switch (format.sampleType()) {
case QAudioFormat::SignedInt:
if (format.byteOrder() == QAudioFormat::LittleEndian) {
params.format.format = SND_PCM_SFMT_S16_LE;
} else {
params.format.format = SND_PCM_SFMT_S16_BE;
}
break;
case QAudioFormat::UnSignedInt:
if (format.byteOrder() == QAudioFormat::LittleEndian) {
params.format.format = SND_PCM_SFMT_U16_LE;
} else {
params.format.format = SND_PCM_SFMT_U16_BE;
}
break;
default:
break;
}
break;
case 32:
switch (format.sampleType()) {
case QAudioFormat::SignedInt:
if (format.byteOrder() == QAudioFormat::LittleEndian) {
params.format.format = SND_PCM_SFMT_S32_LE;
} else {
params.format.format = SND_PCM_SFMT_S32_BE;
}
break;
case QAudioFormat::UnSignedInt:
if (format.byteOrder() == QAudioFormat::LittleEndian) {
params.format.format = SND_PCM_SFMT_U32_LE;
} else {
params.format.format = SND_PCM_SFMT_U32_BE;
}
break;
case QAudioFormat::Float:
if (format.byteOrder() == QAudioFormat::LittleEndian) {
params.format.format = SND_PCM_SFMT_FLOAT_LE;
} else {
params.format.format = SND_PCM_SFMT_FLOAT_BE;
}
break;
default:
break;
}
break;
}
return params;
}
QT_END_NAMESPACE
|
