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
|
/***************************************************************************
* Copyright (C) 2006-2012 by Ilya Kotov *
* forkotov02@hotmail.ru *
* *
* 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. *
***************************************************************************/
#ifndef OUTPUTALSA_H
#define OUTPUTALSA_H
class OutputALSA;
#include <QObject>
extern "C"
{
#include <alsa/asoundlib.h>
}
#include <qmmp/output.h>
#include <qmmp/volumecontrol.h>
class OutputALSA : public Output
{
Q_OBJECT
public:
OutputALSA(QObject * parent = 0);
~OutputALSA();
bool initialize(quint32, int, Qmmp::AudioFormat format);
qint64 latency();
private:
//output api
qint64 writeAudio(unsigned char *data, qint64 maxSize);
void drain();
void reset();
void suspend();
void resume();
// helper functions
long alsa_write(unsigned char *data, long size);
void uninitialize();
bool m_inited;
bool m_use_mmap;
//alsa
snd_pcm_t *pcm_handle;
char *pcm_name;
snd_pcm_uframes_t m_chunk_size;
size_t m_bits_per_frame;
//prebuffer
uchar *m_prebuf;
qint64 m_prebuf_size;
qint64 m_prebuf_fill;
bool m_can_pause;
};
class VolumeControlALSA : public VolumeControl
{
Q_OBJECT
public:
VolumeControlALSA(QObject *parent = 0);
~VolumeControlALSA();
void setVolume(int left, int right) ;
protected:
void volume(int *left, int *right);
private:
//alsa mixer
int setupMixer(QString card, QString device);
void parseMixerName(char *str, char **name, int *index);
int getMixer(snd_mixer_t **mixer, QString card);
snd_mixer_elem_t* getMixerElem(snd_mixer_t *mixer, char *name, int index);
snd_mixer_t *mixer;
snd_mixer_elem_t *pcm_element;
bool m_use_mmap;
};
#endif // OUTPUTALSA_H
|
