root/sound/usb/usx2y/usbusx2y.h

INCLUDED FROM

#ifndef USBUSX2Y_H
#define USBUSX2Y_H
#include "../usbaudio.h"
#include "usbus428ctldefs.h" 

#define NRURBS          2       


#define URBS_AsyncSeq 10
#define URB_DataLen_AsyncSeq 32
struct snd_usX2Y_AsyncSeq {
        struct urb      *urb[URBS_AsyncSeq];
        char            *buffer;
};

struct snd_usX2Y_urbSeq {
        int     submitted;
        int     len;
        struct urb      *urb[0];
};

#include "usx2yhwdeppcm.h"

struct usX2Ydev {
        struct snd_usb_audio    chip;
        int                     stride;
        struct urb              *In04urb;
        void                    *In04Buf;
        char                    In04Last[24];
        unsigned                In04IntCalls;
        struct snd_usX2Y_urbSeq *US04;
        wait_queue_head_t       In04WaitQueue;
        struct snd_usX2Y_AsyncSeq       AS04;
        unsigned int            rate,
                                format;
        int                     chip_status;
        struct mutex            prepare_mutex;
        struct us428ctls_sharedmem      *us428ctls_sharedmem;
        int                     wait_iso_frame;
        wait_queue_head_t       us428ctls_wait_queue_head;
        struct snd_usX2Y_hwdep_pcm_shm  *hwdep_pcm_shm;
        struct snd_usX2Y_substream      *subs[4];
        struct snd_usX2Y_substream      * volatile  prepare_subs;
        wait_queue_head_t       prepare_wait_queue;
};


struct snd_usX2Y_substream {
        struct usX2Ydev *usX2Y;
        struct snd_pcm_substream *pcm_substream;

        int                     endpoint;               
        unsigned int            maxpacksize;            /* max packet size in bytes */

        atomic_t                state;
#define state_STOPPED   0
#define state_STARTING1 1
#define state_STARTING2 2
#define state_STARTING3 3
#define state_PREPARED  4
#define state_PRERUNNING  6
#define state_RUNNING   8

        int                     hwptr;                  /* free frame position in the buffer (only for playback) */
        int                     hwptr_done;             /* processed frame position in the buffer */
        int                     transfer_done;          /* processed frames since last period update */

        struct urb              *urb[NRURBS];   /* data urb table */
        struct urb              *completed_urb;
        char                    *tmpbuf;                        /* temporary buffer for playback */
};


#define usX2Y(c) ((struct usX2Ydev *)(c)->private_data)

int usX2Y_audio_create(struct snd_card *card);

int usX2Y_AsyncSeq04_init(struct usX2Ydev *usX2Y);
int usX2Y_In04_init(struct usX2Ydev *usX2Y);

#define NAME_ALLCAPS "US-X2Y"

#endif