linux/sound/usb/usx2y/usx2yhwdeppcm.h
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   1#define MAXPACK 50
   2#define MAXBUFFERMS 100
   3#define MAXSTRIDE 3
   4
   5#define SSS (((MAXPACK*MAXBUFFERMS*MAXSTRIDE + 4096) / 4096) * 4096)
   6struct snd_usX2Y_hwdep_pcm_shm {
   7        char playback[SSS];
   8        char capture0x8[SSS];
   9        char capture0xA[SSS];
  10        volatile int playback_iso_head;
  11        int playback_iso_start;
  12        struct {
  13                int     frame,
  14                        offset,
  15                        length;
  16        } captured_iso[128];
  17        volatile int captured_iso_head;
  18        volatile unsigned captured_iso_frames;
  19        int capture_iso_start;
  20};
  21