sound/usb/usx2y/usbusx2y.h

   1 #ifndef USBUSX2Y_H
   2 #define USBUSX2Y_H
   3 #include "../usbaudio.h"
   4 #include "usbus428ctldefs.h"
   5
   6 #define NRURBS          2       /* */
   7 #define NRPACKS         1       /* FIXME: Currently only 1 works.
   8                                    usb-frames/ms per urb: 1 and 2 are supported.
   9                                    setting to 2 will PERHAPS make it easier for slow machines.
  10                                    Jitter will be higher though.
  11                                    On my PIII 500Mhz Laptop setting to 1 is the only way to go
  12                                    for PLAYING synths. i.e. Jack & Aeolus sound quit nicely
  13                                    at 4 periods 64 frames.
  14                                 */
  15
  16 #define URBS_AsyncSeq 10
  17 #define URB_DataLen_AsyncSeq 32
  18 typedef struct {
  19         struct urb*     urb[URBS_AsyncSeq];
  20         char*   buffer;
  21 } snd_usX2Y_AsyncSeq_t;
  22
  23 typedef struct {
  24         int     submitted;
  25         int     len;
  26         struct urb*     urb[0];
  27 } snd_usX2Y_urbSeq_t;
  28
  29 typedef struct snd_usX2Y_substream snd_usX2Y_substream_t;
  30
  31 typedef struct {
  32         snd_usb_audio_t         chip;
  33         int                     stride;
  34         struct urb              *In04urb;
  35         void                    *In04Buf;
  36         char                    In04Last[24];
  37         unsigned                In04IntCalls;
  38         snd_usX2Y_urbSeq_t      *US04;
  39         wait_queue_head_t       In04WaitQueue;
  40         snd_usX2Y_AsyncSeq_t    AS04;
  41         unsigned int            rate,
  42                                 format;
  43         int                     refframes;
  44         int                     chip_status;
  45         struct semaphore        open_mutex;
  46         us428ctls_sharedmem_t   *us428ctls_sharedmem;
  47         wait_queue_head_t       us428ctls_wait_queue_head;
  48         snd_usX2Y_substream_t   *substream[4];
  49 } usX2Ydev_t;
  50
  51
  52 #define usX2Y(c) ((usX2Ydev_t*)(c)->private_data)
  53
  54 int usX2Y_audio_create(snd_card_t* card);
  55
  56 int usX2Y_AsyncSeq04_init(usX2Ydev_t* usX2Y);
  57 int usX2Y_In04_init(usX2Ydev_t* usX2Y);
  58
  59 #define NAME_ALLCAPS "US-X2Y"
  60
  61 #endif