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
|
/* audiodevs: Abstraction layer for audio hardware & samples
Copyright (C) 2003-2004 Nemosoft Unv.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
For questions, remarks, patches, etc. for this program, the author can be
reached at camstream@smcc.demon.nl.
*/
#ifndef AUDIODEVICELINUX_HPP
#define AUDIODEVICELINUX_HPP
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#define ALSA_PCM_NEW_HW_PARAMS_API
#define ALSA_PCM_NEW_SW_PARAMS_API
#include <alsa/asoundlib.h>
#include <qstring.h>
#include "AudioDevice.h"
class CAudioControlLinux;
class CAudioDeviceLinux: public CAudioDevice
{
Q_OBJECT
private:
int m_CardNumber;
bool m_StopCapture, m_StopPlayback;
//QWaitCondition m_CaptureFinished, m_PlaybackFinished;
QMutex m_ResetBusy;
snd_pcm_t *m_pSndPcm;
snd_pcm_hw_params_t *m_pHWParams;
snd_pcm_sw_params_t *m_pSWParams;
snd_pcm_channel_area_t m_ChannelArea[32];
snd_pcm_format_t m_Format;
snd_pcm_uframes_t m_SamplesWritten, m_SamplesRead;
snd_pcm_uframes_t m_MinBufferSize, m_MaxBufferSize, m_CurrentBufferSize;
CAudioControlLinux *m_pControl;
int GetHWParameters();
int SetHWParameters();
void DumpHWParameters();
int SetSWParamaters();
private slots:
void ResetStream();
protected:
void run();
virtual bool Init();
virtual void Exit();
virtual int StartCapture();
virtual void StopCapture();
virtual int StartPlayback();
virtual void StopPlayback();
public:
CAudioDeviceLinux(int card_number);
virtual ~CAudioDeviceLinux();
virtual unsigned long GetPlaybackPointer() const;
virtual void SetBufferLength(unsigned int len, unsigned int chunk_length = 0);
virtual void SetBufferTime(unsigned int ms, unsigned int chunk_length = 0);
//virtual int WriteDirectly(const void *, unsigned int len) = 0;
virtual void GetMixerSettings(QDomNode &) const;
virtual void SetMixerSettings(const QDomNode &) const;
public slots:
///void ShowSettingsDialog();
void ShowMixerControls();
};
#endif
|
