/usr/include/clalsadrv.h is in libclalsadrv-dev 2.0.0-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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 | /*
Copyright (C) 2003-2008 Fons Adriaensen <fons@kokkinizita.net>
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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifndef __CLALSADRV_H
#define __CLALSADRV_H
#define ALSA_PCM_NEW_HW_PARAMS_API
#define ALSA_PCM_NEW_SW_PARAMS_API
#include <alsa/asoundlib.h>
class Alsa_driver
{
public:
Alsa_driver (const char *play_name,
const char *capt_name,
const char *ctrl_name,
unsigned int rate,
snd_pcm_uframes_t frsize,
unsigned int nfrags);
Alsa_driver (const char *name,
unsigned int rate,
snd_pcm_uframes_t frsize,
unsigned int nfrags,
bool play,
bool capt,
bool ctrl);
~Alsa_driver (void);
void printinfo (void);
int pcm_start (void);
int pcm_stop (void);
snd_pcm_sframes_t pcm_wait (void);
int pcm_idle (snd_pcm_uframes_t len);
int play_init (snd_pcm_uframes_t len);
void play_chan (int chan, const float *src, snd_pcm_uframes_t len)
{
_play_ptr [chan] = _play_func (src, _play_ptr [chan], _play_step, len);
}
void clear_chan (int chan, snd_pcm_uframes_t len)
{
_play_ptr [chan] = _clear_func (_play_ptr [chan], _play_step, len);
}
int play_done (snd_pcm_uframes_t len)
{
return snd_pcm_mmap_commit (_play_handle, _play_offs, len);
}
int capt_init (snd_pcm_uframes_t len);
void capt_chan (int chan, float *dst, snd_pcm_uframes_t len)
{
_capt_ptr [chan] = _capt_func (_capt_ptr [chan], dst, _capt_step, len);
}
int capt_done (snd_pcm_uframes_t len)
{
return snd_pcm_mmap_commit (_capt_handle, _capt_offs, len);
}
int stat (void) { return _stat; }
int nplay (void) { return _play_nchan; }
int ncapt (void) { return _capt_nchan; }
snd_pcm_t *play_handle (void) { return _play_handle; }
snd_pcm_t *capt_handle (void) { return _capt_handle; }
private:
typedef char *(*clear_function)(char *, int, int);
typedef char *(*play_function)(const float *, char *, int, int);
typedef const char *(*capt_function) (const char *, float *, int, int);
enum { MAXPFD = 16, MAXPLAY = 64, MAXCAPT = 64 };
void initialise (const char *play_name,
const char *capt_name,
const char *ctrl_name,
unsigned int rate,
snd_pcm_uframes_t frsize,
unsigned int nfrags);
int set_hwpar (snd_pcm_t *handle, snd_pcm_hw_params_t *hwpar, const char *sname, unsigned int *nchan);
int set_swpar (snd_pcm_t *handle, snd_pcm_sw_params_t *swpar, const char *sname);
int recover (void);
unsigned int _rate;
snd_pcm_uframes_t _frsize;
unsigned int _nfrags;
snd_pcm_t *_play_handle;
snd_pcm_t *_capt_handle;
snd_ctl_t *_ctrl_handle;
snd_pcm_hw_params_t *_play_hwpar;
snd_pcm_sw_params_t *_play_swpar;
snd_pcm_hw_params_t *_capt_hwpar;
snd_pcm_sw_params_t *_capt_swpar;
snd_pcm_format_t _play_format;
snd_pcm_format_t _capt_format;
snd_pcm_access_t _play_access;
snd_pcm_access_t _capt_access;
unsigned int _play_nchan;
unsigned int _capt_nchan;
int _play_npfd;
int _capt_npfd;
bool _synced;
struct pollfd _pfd [MAXPFD];
snd_pcm_uframes_t _capt_offs;
snd_pcm_uframes_t _play_offs;
int _play_step;
int _capt_step;
char *_play_ptr [MAXPLAY];
const char *_capt_ptr [MAXCAPT];
int _stat;
int _pcnt;
bool _xrun;
clear_function _clear_func;
play_function _play_func;
capt_function _capt_func;
static char *clear_32le (char *dst, int step, int nfrm);
static char *clear_24le (char *dst, int step, int nfrm);
static char *clear_16le (char *dst, int step, int nfrm);
static char *play_32le (const float *src, char *dst, int step, int nfrm);
static char *play_24le (const float *src, char *dst, int step, int nfrm);
static char *play_16le (const float *src, char *dst, int step, int nfrm);
static const char *capt_32le (const char *src, float *dst, int step, int nfrm);
static const char *capt_24le (const char *src, float *dst, int step, int nfrm);
static const char *capt_16le (const char *src, float *dst, int step, int nfrm);
};
#endif
|