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#ifndef _DDKSAMPLE_H
#define _DDKSAMPLE_H
// Audio engine (port) control structure.
#define MAX_SUBDEVICE 4
typedef struct
{
int dev;
int open_mode; /* OPEN_READ | OPEN_WRITE */
int speed;
int channels;
int format, bits;
int prepare_flags;
int audio_active;
int timeout_value;
timeout_id_t timeout_id;
int left_volume, right_volume;
int mute;
#define DDKSAMPLE_MAX_VOL 100
int left_peak, right_peak;
} ddksample_portc;
// Device control structure
typedef struct
{
oss_device_t *osdev;
kmutex_t mutex;
int mixer_dev;
int mainvol_left, mainvol_right;
int num_portc;
ddksample_portc portc[MAX_SUBDEVICE];
int audio_open_count; /* Number of channels currently opened */
} ddksample_devc;
extern int ddksample_mixer_init (ddksample_devc * devc);
extern int ddksample_audio_init (ddksample_devc * devc);
extern void ddksample_do_math (ddksample_portc * portc, void *buf, int len);
#endif
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