jehanne/sys/include/usb/audioctl.h

39 lines
1.0 KiB
C
Raw Normal View History

/*
* This file is part of the UCB release of Plan 9. It is subject to the license
* terms in the LICENSE file found in the top-level directory of this
* distribution and at http://akaros.cs.berkeley.edu/files/Plan9License. No
* part of the UCB release of Plan 9, including this file, may be copied,
* modified, propagated, or distributed except according to the terms contained
* in the LICENSE file.
*/
enum{
Undef = 0x80000000,
Play = 0,
Record = 1,
};
typedef struct Audiocontrol Audiocontrol;
struct Audiocontrol {
char *name;
uint8_t readable;
uint8_t settable;
uint8_t chans; /* 0 is master, non-zero is bitmap */
int32_t value[8]; /* 0 is master; value[0] == Undef -> all values Undef */
int32_t min, max, step;
};
extern Audiocontrol controls[2][Ncontrol];
extern int endpt[2];
extern int interface[2];
extern int featureid[2];
extern int selectorid[2];
extern int mixerid[2];
extern int buttonendpt;
int ctlparse(char *s, Audiocontrol *c, int32_t *v);
void ctlevent(void);
#pragma varargck type "A" Audiocontrol*