usbusx2y.h

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#ifndef USBUSX2Y_H
#define USBUSX2Y_H
#include "../usbaudio.h"
#include "../midi.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 usb_device   *dev;
    int         card_index;
    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 list_head    midi_list;
    struct list_head    pcm_list;
    int         pcm_devs;
};


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